package com.kidgrow.common.utils;
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import com.alibaba.fastjson.JSON;
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import com.alibaba.fastjson.JSONObject;
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import com.google.common.net.HttpHeaders;
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import org.apache.commons.lang.StringUtils;
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import org.springframework.http.MediaType;
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import org.springframework.util.Assert;
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import org.springframework.web.context.request.RequestContextHolder;
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import org.springframework.web.context.request.ServletRequestAttributes;
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import org.springframework.web.multipart.MultipartHttpServletRequest;
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import org.springframework.web.multipart.MultipartResolver;
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import javax.servlet.ServletInputStream;
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import javax.servlet.ServletRequest;
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import javax.servlet.http.Cookie;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import java.io.*;
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import java.net.URLDecoder;
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import java.net.URLEncoder;
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import java.nio.charset.Charset;
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import java.util.*;
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/**
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* 石家庄喜高科技有限责任公司 版权所有 © Copyright 2020<br>
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*
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* @Description: Http与Servlet工具类<br>
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* @Project: <br>
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* @CreateDate: Created in 2020/2/4 13:54 <br>
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* @Author: <a href="4345453@kidgrow.com">liuke</a>
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*/
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public class WebUtils {
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private final static String staticSuffix = ".css,.js,.png,.jpg,.gif,.jpeg,.bmp,.ico,.swf,.psd,.htc,.htm,.html,.crx,.xpi,.exe,.ipa,.apk,.woff2,.ico,.swf,.ttf,.otf,.svg,.woff";
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/**
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* 静态文件后缀
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*/
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private final static String[] staticFiles = StringUtils.split(staticSuffix, ",");
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/**
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* 动态映射URL后缀
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*/
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private final static String urlSuffix = ".html";
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public static String[] getStaticFiles() {
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return staticFiles;
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}
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/**
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* 设置 Cookie（生成时间为1天）
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*
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* @param name 名称
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* @param value 值
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*/
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public static void setCookie(HttpServletResponse response, String name, String value) {
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setCookie(response, name, value, 60 * 60 * 24);
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}
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/**
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* 设置 Cookie
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*
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* @param name 名称
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* @param value 值
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*/
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public static void setCookie(HttpServletResponse response, String name, String value, String path) {
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setCookie(response, name, value, path, 60 * 60 * 24);
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}
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/**
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* 设置 Cookie
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*
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* @param name 名称
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* @param value 值
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* @param maxAge 生存时间（单位秒）
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*/
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public static void setCookie(HttpServletResponse response, String name, String value, int maxAge) {
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setCookie(response, name, value, "/", maxAge);
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}
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/**
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* 设置 Cookie
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*
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* @param name 名称
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* @param value 值
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* @param maxAge 生存时间（单位秒）
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* @param path 路径
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*/
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public static void setCookie(HttpServletResponse response, String name, String value, String path, int maxAge) {
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Cookie cookie = new Cookie(name, null);
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cookie.setPath(path);
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cookie.setMaxAge(maxAge);
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try {
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cookie.setValue(URLEncoder.encode(value, "utf-8"));
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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}
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response.addCookie(cookie);
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}
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/**
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* 移除cookie
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*
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* @param response
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* @param name
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*/
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public static void removeCookie(HttpServletResponse response, String name) {
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Cookie cookie = new Cookie(name, null);
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cookie.setPath("/");
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cookie.setMaxAge(0);
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cookie.setValue(null);
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response.addCookie(cookie);
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}
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/**
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* 获得指定Cookie的值
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*
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* @param name 名称
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* @return 值
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*/
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public static String getCookie(HttpServletRequest request, String name) {
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return getCookie(request, null, name, false);
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}
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/**
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* 获得指定Cookie的值，并删除。
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*
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* @param name 名称
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* @return 值
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*/
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public static String getCookie(HttpServletRequest request, HttpServletResponse response, String name) {
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return getCookie(request, response, name, true);
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}
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/**
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* 获得指定Cookie的值
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*
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* @param request 请求对象
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* @param response 响应对象
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* @param name 名字
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* @param isRemove 是否移除
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* @return 值
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*/
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public static String getCookie(HttpServletRequest request, HttpServletResponse response, String name, boolean isRemove) {
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String value = null;
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Cookie[] cookies = request.getCookies();
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if (cookies != null) {
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for (Cookie cookie : cookies) {
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if (cookie.getName().equals(name)) {
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try {
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value = URLDecoder.decode(cookie.getValue(), "utf-8");
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} catch (UnsupportedEncodingException e) {
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e.printStackTrace();
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}
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if (isRemove) {
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cookie.setMaxAge(0);
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response.addCookie(cookie);
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}
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}
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}
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}
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return value;
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}
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/**
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* 设置客户端缓存过期时间 的Header.
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*/
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public static void setExpiresHeader(HttpServletResponse response, long expiresSeconds) {
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// Http 1.0 header, set model fix expires date.
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response.setDateHeader(HttpHeaders.EXPIRES, System.currentTimeMillis() + expiresSeconds * 1000);
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// Http 1.1 header, set model time after now.
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response.setHeader(HttpHeaders.CACHE_CONTROL, "private, max-age=" + expiresSeconds);
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}
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/**
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* 设置禁止客户端缓存的Header.
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*/
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public static void setNoCacheHeader(HttpServletResponse response) {
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// Http 1.0 header
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response.setDateHeader(HttpHeaders.EXPIRES, 1L);
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response.addHeader(HttpHeaders.PRAGMA, "no-cache");
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// Http 1.1 header
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response.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache, no-store, max-age=0");
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}
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/**
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* 设置LastModified Header.
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*/
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public static void setLastModifiedHeader(HttpServletResponse response, long lastModifiedDate) {
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response.setDateHeader(HttpHeaders.LAST_MODIFIED, lastModifiedDate);
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}
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/**
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* 设置Etag Header.
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*/
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public static void setEtag(HttpServletResponse response, String etag) {
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response.setHeader(HttpHeaders.ETAG, etag);
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}
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/**
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* 根据浏览器If-Modified-Since Header, 计算文件是否已被修改.
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* <p>
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* 如果无修改, checkIfModify返回false ,设置304 not modify status.
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*
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* @param lastModified 内容的最后修改时间.
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*/
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public static boolean checkIfModifiedSince(HttpServletRequest request, HttpServletResponse response,
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long lastModified) {
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long ifModifiedSince = request.getDateHeader(HttpHeaders.IF_MODIFIED_SINCE);
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if ((ifModifiedSince != -1) && (lastModified < ifModifiedSince + 1000)) {
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response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
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return false;
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}
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return true;
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}
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/**
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* 根据浏览器 If-None-Match Header, 计算Etag是否已无效.
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* <p>
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* 如果Etag有效, checkIfNoneMatch返回false, 设置304 not modify status.
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*
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* @param etag 内容的ETag.
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*/
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public static boolean checkIfNoneMatchEtag(HttpServletRequest request, HttpServletResponse response, String etag) {
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String headerValue = request.getHeader(HttpHeaders.IF_NONE_MATCH);
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if (headerValue != null) {
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boolean conditionSatisfied = false;
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if (!"*".equals(headerValue)) {
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StringTokenizer commaTokenizer = new StringTokenizer(headerValue, ",");
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while (!conditionSatisfied && commaTokenizer.hasMoreTokens()) {
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String currentToken = commaTokenizer.nextToken();
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if (currentToken.trim().equals(etag)) {
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conditionSatisfied = true;
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}
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}
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} else {
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conditionSatisfied = true;
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}
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if (conditionSatisfied) {
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response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
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response.setHeader(HttpHeaders.ETAG, etag);
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return false;
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}
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}
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return true;
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}
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/**
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* 设置让浏览器弹出下载对话框的Header.
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*
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* @param fileName 下载后的文件名.
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*/
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public static void setFileDownloadHeader(HttpServletResponse response, String fileName) {
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try {
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// 中文文件名支持
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String encodedfileName = new String(fileName.getBytes(), "ISO8859-1");
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response.setHeader(HttpHeaders.CONTENT_DISPOSITION, "attachment; filename=\"" + encodedfileName + "\"");
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} catch (UnsupportedEncodingException e) {
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e.getMessage();
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}
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}
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/**
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* 取得带相同前缀的Request Parameters, copy from spring WebUtils.
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* <p>
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* 返回的结果的Parameter名已去除前缀.
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*/
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@SuppressWarnings("rawtypes")
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public static Map<String, Object> getParametersWith(ServletRequest request, String prefix) {
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Assert.notNull(request, "Request must not be null");
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Enumeration paramNames = request.getParameterNames();
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Map<String, Object> params = new TreeMap<String, Object>();
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String pre = prefix;
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if (pre == null) {
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pre = "";
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}
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while (paramNames != null && paramNames.hasMoreElements()) {
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String paramName = (String) paramNames.nextElement();
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if ("".equals(pre) || paramName.startsWith(pre)) {
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String unprefixed = paramName.substring(pre.length());
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String[] values = request.getParameterValues(paramName);
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if (values == null || values.length == 0) {
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values = new String[]{};
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// Do nothing, no values found at all.
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} else if (values.length > 1) {
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params.put(unprefixed, values);
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} else {
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params.put(unprefixed, values[0]);
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}
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}
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}
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return params;
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}
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/**
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* 获取请求Body
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*
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* @param request
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* @return
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*/
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public static String getBodyString(final ServletRequest request) {
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StringBuilder sb = new StringBuilder();
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InputStream inputStream = null;
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BufferedReader reader = null;
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try {
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inputStream = cloneInputStream(request.getInputStream());
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reader = new BufferedReader(new InputStreamReader(inputStream, Charset.forName("UTF-8")));
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String line = "";
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while ((line = reader.readLine()) != null) {
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sb.append(line);
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}
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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if (inputStream != null) {
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try {
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inputStream.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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if (reader != null) {
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try {
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reader.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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return sb.toString();
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}
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/**
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* 复制输入流
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*
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* @param inputStream
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* @return</br>
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*/
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public static InputStream cloneInputStream(ServletInputStream inputStream) {
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ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
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byte[] buffer = new byte[1024];
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int len;
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try {
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while ((len = inputStream.read(buffer)) > -1) {
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byteArrayOutputStream.write(buffer, 0, len);
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}
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byteArrayOutputStream.flush();
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} catch (IOException e) {
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e.printStackTrace();
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}
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InputStream byteArrayInputStream = new ByteArrayInputStream(byteArrayOutputStream.toByteArray());
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return byteArrayInputStream;
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}
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/**
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* 从request中获得参数，并返回可读的Map
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* application/x-www-form-urlencode
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* application/json
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* application/json;charset=UTF-8
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* multipart/form-data
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*
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* @param request
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* @return
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*/
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public static Map<String, String> getParameterMap(HttpServletRequest request) {
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String contentType = request.getHeader(org.springframework.http.HttpHeaders.CONTENT_TYPE);
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Map<String, String> returnMap = new HashMap();
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if (contentType != null && contentType.contains(MediaType.MULTIPART_FORM_DATA_VALUE)) {
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// form-data表单
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MultipartResolver multipartResolver = SpringContextHolder.getBean(MultipartResolver.class);
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MultipartHttpServletRequest multiReq = multipartResolver.resolveMultipart(request);
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returnMap = conventMap(multiReq.getParameterMap());
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} else if (MediaType.APPLICATION_JSON_VALUE.equals(contentType) || MediaType.APPLICATION_JSON_UTF8_VALUE.equals(contentType)) {
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// json表单
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String body = getBodyString(request);
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if (StringUtils.isNotBlank(body)) {
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try {
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returnMap = JSONObject.parseObject(body, Map.class);
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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} else {
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// 普通表单
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returnMap = conventMap(request.getParameterMap());
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}
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// 参数Map
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return returnMap;
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}
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private static Map conventMap(Map map) {
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Map<String, String> returnMap = new HashMap();
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// 返回值Map
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Iterator entries = map.entrySet().iterator();
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Map.Entry entry;
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String name = "";
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String value = "";
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while (entries.hasNext()) {
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entry = (Map.Entry) entries.next();
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name = (String) entry.getKey();
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Object valueObj = entry.getValue();
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if (null == valueObj) {
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value = "";
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} else if (valueObj instanceof String[]) {
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String[] values = (String[]) valueObj;
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if (values != null && values.length > 0) {
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for (int i = 0; i < values.length; i++) {
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value = values[i] + ",";
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}
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value = value.substring(0, value.length() - 1);
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}
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} else {
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value = valueObj.toString();
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}
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returnMap.put(name, value);
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}
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return returnMap;
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}
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/**
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* 组合Parameters生成Query String的Parameter部分,并在paramter name上加上prefix.
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*/
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public static String encodeParameterWithPrefix(Map<String, Object> params, String prefix) {
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StringBuilder queryStringBuilder = new StringBuilder();
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String pre = prefix;
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if (pre == null) {
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pre = "";
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}
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Iterator<Map.Entry<String, Object>> it = params.entrySet().iterator();
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while (it.hasNext()) {
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Map.Entry<String, Object> entry = it.next();
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queryStringBuilder.append(pre).append(entry.getKey()).append("=").append(entry.getValue());
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if (it.hasNext()) {
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queryStringBuilder.append("&");
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}
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}
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return queryStringBuilder.toString();
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}
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/**
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* 客户端对Http Basic验证的 Header进行编码.
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*/
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public static String encodeHttpBasic(String userName, String password) {
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String encode = userName + ":" + password;
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return "Basic " + EncodeUtils.encodeBase64(encode.getBytes());
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}
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/**
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* 是否是Ajax异步请求
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*
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* @param request
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*/
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public static boolean isAjaxRequest(HttpServletRequest request) {
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return (request.getHeader("X-Requested-With") != null && "XMLHttpRequest".equals(request.getHeader("X-Requested-With").toString())) || (request.getHeader("Content-Type") != null && request.getHeader("Content-Type").startsWith("application/json"));
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}
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/**
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* 获取IP地址
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*
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* @param request
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* @return
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*/
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public static String getRemoteAddress(HttpServletRequest request) {
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String unknown = "unknown";
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String ip = request.getHeader("X-Forwarded-For");
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if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
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ip = request.getHeader("Proxy-Client-IP");
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}
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if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
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ip = request.getHeader("WL-Proxy-Client-IP");
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}
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if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
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ip = request.getHeader("HTTP_CLIENT_IP");
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}
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if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
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ip = request.getHeader("HTTP_X_FORWARDED_FOR");
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}
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if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
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ip = request.getHeader("X-Real-IP");
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}
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if (ip == null || ip.length() == 0 || unknown.equalsIgnoreCase(ip)) {
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ip = request.getRemoteAddr();
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}
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//对于通过多个代理的情况，第一个IP为客户端真实IP,多个IP按照','分割
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if (ip != null && ip.length() > 0) {
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String[] ips = ip.split(",");
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if (ips.length > 0) {
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ip = ips[0];
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}
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}
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return ip;
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}
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/**
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* 判断访问URI是否是静态文件请求
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*
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* @throws Exception
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*/
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public static boolean isStaticFile(String uri) {
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return StringUtils.endsWithAny(uri, staticFiles) && !StringUtils.endsWithAny(uri, new String[]{urlSuffix})
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&& !StringUtils.endsWithAny(uri, new String[]{".jsp"}) && !StringUtils.endsWithAny(uri, new String[]{".java"});
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}
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/**
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* 客户端返回JSON字符串
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*
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* @param response
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* @param object
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* @return
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*/
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public static void writeJson(HttpServletResponse response, Object object) {
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writeJson(response, JSON.toJSONString(object), MediaType.APPLICATION_JSON_UTF8_VALUE);
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}
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/**
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* 客户端返回字符串
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*
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* @param response
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* @param string
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* @return
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*/
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public static void writeJson(HttpServletResponse response, String string, String type) {
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try {
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response.setContentType(type);
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response.setCharacterEncoding("utf-8");
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response.getWriter().print(string);
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response.getWriter().flush();
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response.getWriter().close();
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} catch (IOException e) {
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}
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}
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public static String getServerUrl(HttpServletRequest request) {
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String url = request.getScheme() + "://" + request.getServerName()
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+ ":" + request.getServerPort() + request.getContextPath();
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return url;
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}
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public static String getContextPath(HttpServletRequest request) {
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return request.getContextPath();
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}
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public static HttpServletRequest getHttpServletRequest() {
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try {
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return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
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} catch (Exception e) {
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return null;
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}
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}
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public static Map<String, String> getHttpHeaders(HttpServletRequest request) {
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Map<String, String> map = new LinkedHashMap<>();
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if (request != null) {
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Enumeration<String> enumeration = request.getHeaderNames();
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if (enumeration != null) {
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while (enumeration.hasMoreElements()) {
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String key = enumeration.nextElement();
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String value = request.getHeader(key);
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map.put(key, value);
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}
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}
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}
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return map;
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}
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}
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