SpringMVC文件上传和Jwt身份验证

SpringMVC文件上传

思路:

1、首先定义页面，定义多功能表单（enctype=“multipart/form-data”）
2、在Controller里面定义一个方法，用参数（MultipartFile）来接收前台传递过来的文件对象
3、然后文件上传就是把文件从一个地方（本地）复制到另外一个地方（服务器）

首先添加pom依赖


<dependency><groupId>commons-fileupload</groupId><artifactId>commons-fileupload</artifactId><version>1.3.3</version>
</dependency>

springmvc.xml

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"><!-- 必须和用户JSP 的pageEncoding属性一致，以便正确解析表单的内容 --><property name="defaultEncoding" value="UTF-8"></property><!-- 文件最大大小(字节) 1024*1024*50=50M--><property name="maxUploadSize" value="52428800"></property><!--resolveLazily属性启用是为了推迟文件解析，以便捕获文件大小异常--><property name="resolveLazily" value="true"/>
</bean>

upload.jsp

<form action="/book/upload" method="post" enctype="multipart/form-data">请选择文件:<input type="file" name="xxx"><input type="submit" value="ok"></form>


@RequestMapping("/upload")public String upload(HttpServletRequest req, MultipartFile xxx){String fileName=xxx.getOriginalFilename();String contentType=xxx.getContentType();try {FileUtils.copyInputStreamToFile(xxx.getInputStream(),new File("D:\liuxia"+fileName));} catch (IOException e) {e.printStackTrace();}return "redirect:/book/list";}

Jwt身份验证

什么是Jwt

JSON Web Token (JWT)，它是目前最流行的跨域身份验证解决方案
JWT的精髓在于：“去中心化”，数据是保存在客户端的。

JWT的工作原理

是在服务器身份验证之后，将生成一个JSON对象并将其发送回用户，示例如下：
{“UserName”: “Chongchong”,“Role”: “Admin”,“Expire”: “2018-08-08 20:15:56”}
之后，当用户与服务器通信时，客户在请求中发回JSON对象
为了防止用户篡改数据，服务器将在生成对象时添加签名，并对发回的数据进行验证

Jwt组成：一个JWT实际上就是一个字符串，它由三部分组成：头部(Header)、载荷(Payload)与签名(signature)

Jwt实现登录验证

思路：

登录界面向后台请求验证码，后台就先调用随机函数生成验证码，并且根据验证码生成一张图片，以 base64 字符串的形式传到前台，这时我们还要生成verificationJwt令牌做为请求验证码客户端的区分。我们先将验证码信息存入redis。key是 verificationJwt令牌的值，value就是验证码了。并且将令牌放入到响应头。传给客户端。当客户端提交的时候将保持的verificationJwt令牌放入请求头带过来。后端根据前端传过来的 jwt令牌去redis中获取数据，将验证码拿到后和现有的验证码进行比较。看看是否相等

细节：

访问一次登录页面，生成一个verificationJwt令牌，这个令牌的有效时间是5min，验证码在redis中的有效时间是1min，无论是verificationJwt令牌超时失效，还是验证码生成后超时失效，都会造成登录失败；
简单来说就是跳转到登陆界面，需要在5min中之内完成登录，新的验证码出来后，需要在1min中之内完成登录

逻辑图如下

效果图：

Pom依赖

<!--引入JWT依赖,由于是基于Java，所以需要的是java-jwt --><dependency><groupId>io.jsonwebtoken</groupId><artifactId>jjwt</artifactId><version>0.9.1</version></dependency><dependency><groupId>com.auth0</groupId><artifactId>java-jwt</artifactId><version>3.4.0</version></dependency>

前端：

State.js

export default {resturantName: '飞歌餐馆',jwt:'',options: [],//存放tab页的容器activeIndex: '',//激活的tab页路由路径showName:'show',//tab页的标题role:"",//用来区分是否是因为左侧菜单被点击造成的路由路径发生改变，是：pass；不是：nopassverificationJwt:null, //这是用来保存用户等登录验证码jwt身份识别的
}

Mutations.js


setVerificationJwt: (state, payload) => {state.verificationJwt = payload.verificationJwt;}

Getters.js

getVerificationJwt:(state) =>{return state.verificationJwt;}

action.js

export default {// 'SERVER': 'http://localhost:8080/T216_SSH', //服务器'SERVER': 'http://localhost:8080', //服务器// 'SYSTEM_USER_DOLOGIN': '/vue/userAction_login.action', //用户登陆'SYSTEM_USER_DOLOGIN': '/vue/user/login', //用户登陆'VERIFICATION': '/vue/user/verificationCode', //用户登陆'SYSTEM_USER_DOREG': '/vue/userAction_reg.action', //用户注册'SYSTEM_MENU_TREE': '/vue/treeNodeAction.action', //左侧树形菜单加载'SYSTEM_ARTICLE_LIST': '/vue/articleAction_list.action', //文章列表'SYSTEM_ARTICLE_ADD': '/vue/articleAction_add.action', //文章新增'SYSTEM_ARTICLE_EDIT': '/vue/articleAction_edit.action', //文章修改'SYSTEM_ARTICLE_DEL': '/vue/articleAction_del.action', //文章删除'SYSTEM_USER_GETASYNCDATA': '/vue/userAction_getAsyncData.action', //vuex中的异步加载数据'getFullPath': k => { //获得请求的完整地址，用于mockjs测试时使用return this.SERVER + this[k];}
}

http.js


// 请求拦截器
axios.interceptors.request.use(function(config) {//设置验证码jwt令牌let verificationJwt = window.vm.$store.getters.getVerificationJwt;if (verificationJwt) {config.headers['verificationJwt'] = verificationJwt;}var jwt = window.vm.$store.getters.getJwt;config.headers['jwt'] = jwt;return config;
}, function(error) {return Promise.reject(error);
});// 响应拦截器
axios.interceptors.response.use(function(response) {// debugger;//保存验证码jwt令牌let verificationjwt = response.headers['verificationjwt'];if (verificationjwt) {window.vm.$store.commit('setVerificationJwt', {verificationJwt: verificationjwt});}var jwt = response.headers['jwt'];if (jwt) {window.vm.$store.commit('setJwt', {jwt: jwt});}return response;
}, function(error) {return Promise.reject(error);
});

Login.vue


<template><div class="login-wrap"><el-form class="login-container"><h1 class="title">用户登录</h1><el-form-item label=""><el-input type="text" v-model="userName" placeholder="请输入登录账号" autocomplete="off"></el-input></el-form-item><el-form-item label=""><el-input type="password" v-model="userPwd" placeholder="请输入登录密码" autocomplete="off"></el-input></el-form-item><el-form-item label=""><el-row><el-col :span="16"><el-input type="text" v-model="verificationCode" placeholder="请输入验证码" autocomplete="off"></el-input></el-col><el-col :span="8"><img id="img" :src="verificationCodeSrc" width="116px" height="40px" @click="changeVerificationCode" ></el-col></el-row></el-form-item><el-form-item><el-button type="primary" style="width: 100%;" @click="doSubmit">登  录</el-button></el-form-item><el-row style="text-align: center; margin-top: -15;"><el-link type="primary">忘记密码</el-link><el-link type="primary" @click="gotoRegister">用户注册</el-link></el-row></el-form></div>
</template><script>export default {name: 'Login',data: function() {return {userName: null,userPwd: null,verificationCode:null,verificationCodeSrc:null}},methods: {gotoRegister:function(){this.$router.push('/Register');},doSubmit: function() {let params = {uname: this.userName,pwd: this.userPwd,verificationCode: this.verificationCode};let url = this.axios.urls.SYSTEM_USER_DOLOGIN;this.axios.post(url, params).then(resp => {if(resp.data.status==200) {//提示登录成功this.$message({message: resp.data.msg,type: 'success'});//跳转路由this.$router.push({path:'/Main'})//这是将用户信息保持下来
//                         let user=resp.data.data
//                         this.$store.dispatch('setUserAsync',{
//                             user:user
//                         });}else{this.$message({message: resp.data.msg,type: 'error'});}}).catch(resp => {this.$message({message: "请求异常",type: 'error'});});},//更新验证码changeVerificationCode(){let url = this.axios.urls.VERIFICATION;this.axios.post(url, {}).then(resp => {this.verificationCodeSrc = resp.data;}).catch(resp => {console.log(resp);});}},created() {let url = this.axios.urls.VERIFICATION;this.axios.post(url, {}).then(resp => {this.verificationCodeSrc = resp.data;}).catch(resp => {console.log(resp);});}}
</script><!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>.login-wrap {box-sizing: border-box;width: 100%;height: 100%;padding-top: 10%;background-image: url(data:image/svg+xml;base64,<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg width="1361px" height="609px" viewBox="0 0 1361 609" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <!-- Generator: Sketch 46.2 (44496) - http://www.bohemiancoding.com/sketch -->
    <title>Group 21</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="Ant-Design-Pro-3.0" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
        <g id="账户密码登录-校验" transform="translate(-79.000000, -82.000000)">
            <g id="Group-21" transform="translate(77.000000, 73.000000)">
                <g id="Group-18" opacity="0.8" transform="translate(74.901416, 569.699158) rotate(-7.000000) translate(-74.901416, -569.699158) translate(4.901416, 525.199158)">
                    <ellipse id="Oval-11" fill="#CFDAE6" opacity="0.25" cx="63.5748792" cy="32.468367" rx="21.7830479" ry="21.766008"></ellipse>
                    <ellipse id="Oval-3" fill="#CFDAE6" opacity="0.599999964" cx="5.98746479" cy="13.8668601" rx="5.2173913" ry="5.21330997"></ellipse>
                    <path d="M38.1354514,88.3520215 C43.8984227,88.3520215 48.570234,83.6838647 48.570234,77.9254015 C48.570234,72.1669383 43.8984227,67.4987816 38.1354514,67.4987816 C32.3724801,67.4987816 27.7006688,72.1669383 27.7006688,77.9254015 C27.7006688,83.6838647 32.3724801,88.3520215 38.1354514,88.3520215 Z" id="Oval-3-Copy" fill="#CFDAE6" opacity="0.45"></path>
                    <path d="M64.2775582,33.1704963 L119.185836,16.5654915" id="Path-12" stroke="#CFDAE6" stroke-width="1.73913043" stroke-linecap="round" stroke-linejoin="round"></path>
                    <path d="M42.1431708,26.5002681 L7.71190162,14.5640702" id="Path-16" stroke="#E0B4B7" stroke-width="0.702678964" opacity="0.7" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="1.405357899873153,2.108036953469981"></path>
                    <path d="M63.9262187,33.521561 L43.6721326,69.3250951" id="Path-15" stroke="#BACAD9" stroke-width="0.702678964" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="1.405357899873153,2.108036953469981"></path>
                    <g id="Group-17" transform="translate(126.850922, 13.543654) rotate(30.000000) translate(-126.850922, -13.543654) translate(117.285705, 4.381889)" fill="#CFDAE6">
                        <ellipse id="Oval-4" opacity="0.45" cx="9.13482653" cy="9.12768076" rx="9.13482653" ry="9.12768076"></ellipse>
                        <path d="M18.2696531,18.2553615 C18.2696531,13.2142826 14.1798519,9.12768076 9.13482653,9.12768076 C4.08980114,9.12768076 0,13.2142826 0,18.2553615 L18.2696531,18.2553615 Z" id="Oval-4" transform="translate(9.134827, 13.691521) scale(-1, -1) translate(-9.134827, -13.691521) "></path>
                    </g>
                </g>
                <g id="Group-14" transform="translate(216.294700, 123.725600) rotate(-5.000000) translate(-216.294700, -123.725600) translate(106.294700, 35.225600)">
                    <ellipse id="Oval-2" fill="#CFDAE6" opacity="0.25" cx="29.1176471" cy="29.1402439" rx="29.1176471" ry="29.1402439"></ellipse>
                    <ellipse id="Oval-2" fill="#CFDAE6" opacity="0.3" cx="29.1176471" cy="29.1402439" rx="21.5686275" ry="21.5853659"></ellipse>
                    <ellipse id="Oval-2-Copy" stroke="#CFDAE6" opacity="0.4" cx="179.019608" cy="138.146341" rx="23.7254902" ry="23.7439024"></ellipse>
                    <ellipse id="Oval-2" fill="#BACAD9" opacity="0.5" cx="29.1176471" cy="29.1402439" rx="10.7843137" ry="10.7926829"></ellipse>
                    <path d="M29.1176471,39.9329268 L29.1176471,18.347561 C23.1616351,18.347561 18.3333333,23.1796097 18.3333333,29.1402439 C18.3333333,35.1008781 23.1616351,39.9329268 29.1176471,39.9329268 Z" id="Oval-2" fill="#BACAD9"></path>
                    <g id="Group-9" opacity="0.45" transform="translate(172.000000, 131.000000)" fill="#E6A1A6">
                        <ellipse id="Oval-2-Copy-2" cx="7.01960784" cy="7.14634146" rx="6.47058824" ry="6.47560976"></ellipse>
                        <path d="M0.549019608,13.6219512 C4.12262681,13.6219512 7.01960784,10.722722 7.01960784,7.14634146 C7.01960784,3.56996095 4.12262681,0.670731707 0.549019608,0.670731707 L0.549019608,13.6219512 Z" id="Oval-2-Copy-2" transform="translate(3.784314, 7.146341) scale(-1, 1) translate(-3.784314, -7.146341) "></path>
                    </g>
                    <ellipse id="Oval-10" fill="#CFDAE6" cx="218.382353" cy="138.685976" rx="1.61764706" ry="1.61890244"></ellipse>
                    <ellipse id="Oval-10-Copy-2" fill="#E0B4B7" opacity="0.35" cx="179.558824" cy="175.381098" rx="1.61764706" ry="1.61890244"></ellipse>
                    <ellipse id="Oval-10-Copy" fill="#E0B4B7" opacity="0.35" cx="180.098039" cy="102.530488" rx="2.15686275" ry="2.15853659"></ellipse>
                    <path d="M28.9985381,29.9671598 L171.151018,132.876024" id="Path-11" stroke="#CFDAE6" opacity="0.8"></path>
                </g>
                <g id="Group-10" opacity="0.799999952" transform="translate(1054.100635, 36.659317) rotate(-11.000000) translate(-1054.100635, -36.659317) translate(1026.600635, 4.659317)">
                    <ellipse id="Oval-7" stroke="#CFDAE6" stroke-width="0.941176471" cx="43.8135593" cy="32" rx="11.1864407" ry="11.2941176"></ellipse>
                    <g id="Group-12" transform="translate(34.596774, 23.111111)" fill="#BACAD9">
                        <ellipse id="Oval-7" opacity="0.45" cx="9.18534718" cy="8.88888889" rx="8.47457627" ry="8.55614973"></ellipse>
                        <path d="M9.18534718,17.4450386 C13.8657264,17.4450386 17.6599235,13.6143199 17.6599235,8.88888889 C17.6599235,4.16345787 13.8657264,0.332739156 9.18534718,0.332739156 L9.18534718,17.4450386 Z" id="Oval-7"></path>
                    </g>
                    <path d="M34.6597385,24.809694 L5.71666084,4.76878945" id="Path-2" stroke="#CFDAE6" stroke-width="0.941176471"></path>
                    <ellipse id="Oval" stroke="#CFDAE6" stroke-width="0.941176471" cx="3.26271186" cy="3.29411765" rx="3.26271186" ry="3.29411765"></ellipse>
                    <ellipse id="Oval-Copy" fill="#F7E1AD" cx="2.79661017" cy="61.1764706" rx="2.79661017" ry="2.82352941"></ellipse>
                    <path d="M34.6312443,39.2922712 L5.06366663,59.785082" id="Path-10" stroke="#CFDAE6" stroke-width="0.941176471"></path>
                </g>
                <g id="Group-19" opacity="0.33" transform="translate(1282.537219, 446.502867) rotate(-10.000000) translate(-1282.537219, -446.502867) translate(1142.537219, 327.502867)">
                    <g id="Group-17" transform="translate(141.333539, 104.502742) rotate(275.000000) translate(-141.333539, -104.502742) translate(129.333539, 92.502742)" fill="#BACAD9">
                        <circle id="Oval-4" opacity="0.45" cx="11.6666667" cy="11.6666667" r="11.6666667"></circle>
                        <path d="M23.3333333,23.3333333 C23.3333333,16.8900113 18.1099887,11.6666667 11.6666667,11.6666667 C5.22334459,11.6666667 0,16.8900113 0,23.3333333 L23.3333333,23.3333333 Z" id="Oval-4" transform="translate(11.666667, 17.500000) scale(-1, -1) translate(-11.666667, -17.500000) "></path>
                    </g>
                    <circle id="Oval-5-Copy-6" fill="#CFDAE6" cx="201.833333" cy="87.5" r="5.83333333"></circle>
                    <path d="M143.5,88.8126685 L155.070501,17.6038544" id="Path-17" stroke="#BACAD9" stroke-width="1.16666667"></path>
                    <path d="M17.5,37.3333333 L127.466252,97.6449735" id="Path-18" stroke="#BACAD9" stroke-width="1.16666667"></path>
                    <polyline id="Path-19" stroke="#CFDAE6" stroke-width="1.16666667" points="143.902597 120.302281 174.935455 231.571342 38.5 147.510847 126.366941 110.833333"></polyline>
                    <path d="M159.833333,99.7453842 L195.416667,89.25" id="Path-20" stroke="#E0B4B7" stroke-width="1.16666667" opacity="0.6"></path>
                    <path d="M205.333333,82.1372105 L238.719406,36.1666667" id="Path-24" stroke="#BACAD9" stroke-width="1.16666667"></path>
                    <path d="M266.723424,132.231988 L207.083333,90.4166667" id="Path-25" stroke="#CFDAE6" stroke-width="1.16666667"></path>
                    <circle id="Oval-5" fill="#C1D1E0" cx="156.916667" cy="8.75" r="8.75"></circle>
                    <circle id="Oval-5-Copy-3" fill="#C1D1E0" cx="39.0833333" cy="148.75" r="5.25"></circle>
                    <circle id="Oval-5-Copy-2" fill-opacity="0.6" fill="#D1DEED" cx="8.75" cy="33.25" r="8.75"></circle>
                    <circle id="Oval-5-Copy-4" fill-opacity="0.6" fill="#D1DEED" cx="243.833333" cy="30.3333333" r="5.83333333"></circle>
                    <circle id="Oval-5-Copy-5" fill="#E0B4B7" cx="175.583333" cy="232.75" r="5.25"></circle>
                </g>
            </g>
        </g>
    </g>
</svg>);/* background-color: #112346; */background-repeat: no-repeat;background-position: center right;background-size: 100%;}.login-container {border-radius: 10px;margin: 0px auto;width: 350px;padding: 30px 35px 15px 35px;background: #fff;border: 1px solid #eaeaea;text-align: left;box-shadow: 0 0 20px 2px rgba(0, 0, 0, 0.1);}.title {margin: 0px auto 40px auto;text-align: center;color: #505458;}
</style>

后端

工具类

CorsFilter

package com.liuxia.jwt.util;import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;/*** 配置tomcat允许跨域访问* * @author Administrator**/
public class CorsFilter implements Filter {@Overridepublic void init(FilterConfig filterConfig) throws ServletException {}@Overridepublic void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)throws IOException, ServletException {HttpServletResponse resp = (HttpServletResponse) servletResponse;HttpServletRequest req = (HttpServletRequest) servletRequest;// Access-Control-Allow-Origin就是我们需要设置的域名// Access-Control-Allow-Headers跨域允许包含的头。// Access-Control-Allow-Methods是允许的请求方式resp.setHeader("Access-Control-Allow-Origin", "*");// *,任何域名resp.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, DELETE");// resp.setHeader("Access-Control-Allow-Headers", "Origin,X-Requested-With,// Content-Type, Accept");// 允许客户端，发一个新的请求头jwt//允许客户端发送一个新的请求头resp.setHeader("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept, jwt, verificationJwt");//允许客户端处理一个新的响应头jwtresp.setHeader("Access-Control-Expose-Headers", "jwt");resp.setHeader("Access-Control-Expose-Headers", "verificationJwt");// String sss = resp.getHeader("Access-Control-Expose-Headers");// System.out.println("sss=" + sss);// 允许请求头Token// httpResponse.setHeader("Access-Control-Allow-Headers","Origin,X-Requested-With,// Content-Type, Accept, Token");// System.out.println("Token=" + req.getHeader("Token"));if ("OPTIONS".equals(req.getMethod())) {// axios的ajax会发两次请求，第一次提交方式为：option，直接返回即可return;}filterChain.doFilter(servletRequest, servletResponse);}@Overridepublic void destroy() {}
}

ImageUtil

package com.liuxia.jwt.util;import sun.misc.BASE64Encoder;import javax.imageio.ImageIO;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Random;public class ImageUtil {/*** 根据指定的随机数 生成验证码图片 转 base64* @param word 要生存的验证码随机字符串* @param width 图片宽度* @param height 图片高度* @return base64 格式生成的验证码图片* @throws IOException*/public static String createImageWithVerifyCode(String word, int width, int height) throws IOException {String png_base64="";//绘制内存中的图片BufferedImage bufferedImage = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);//得到画图对象Graphics graphics = bufferedImage.getGraphics();//绘制图片前指定一个颜色graphics.setColor(getRandColor(160,200));graphics.fillRect(0,0,width,height);//绘制边框graphics.setColor(Color.white);graphics.drawRect(0, 0, width - 1, height - 1);// 步骤四 四个随机数字Graphics2D graphics2d = (Graphics2D) graphics;graphics2d.setFont(new Font("宋体", Font.BOLD, 18));Random random = new Random();// 定义x坐标int x = 10;for (int i = 0; i < word.length(); i++) {// 随机颜色graphics2d.setColor(new Color(20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));// 旋转 -30 --- 30度int jiaodu = random.nextInt(60) - 30;// 换算弧度double theta = jiaodu * Math.PI / 180;// 获得字母数字char c = word.charAt(i);//将c 输出到图片graphics2d.rotate(theta, x, 20);graphics2d.drawString(String.valueOf(c), x, 20);graphics2d.rotate(-theta, x, 20);x += 30;}// 绘制干扰线graphics.setColor(getRandColor(160, 200));int x1;int x2;int y1;int y2;for (int i = 0; i < 30; i++) {x1 = random.nextInt(width);x2 = random.nextInt(12);y1 = random.nextInt(height);y2 = random.nextInt(12);graphics.drawLine(x1, y1, x1 + x2, x2 + y2);}graphics.dispose();// 释放资源ByteArrayOutputStream baos = new ByteArrayOutputStream();//io流ImageIO.write(bufferedImage, "png", baos);//写入流中byte[] bytes = baos.toByteArray();//转换成字节BASE64Encoder encoder = new BASE64Encoder();png_base64 = encoder.encodeBuffer(bytes).trim();png_base64 = png_base64.replaceAll("\n", "").replaceAll("\r", "");//删除 \r\nreturn png_base64;}/**设置随机颜色*/private static Color getRandColor(int fc, int bc) {// 取其随机颜色Random random = new Random();if (fc > 255) {fc = 255;}if (bc > 255) {bc = 255;}int r = fc + random.nextInt(bc - fc);int g = fc + random.nextInt(bc - fc);int b = fc + random.nextInt(bc - fc);return new Color(r, g, b);}}

JSONResult

package com.liuxia.jwt.util;public class JSONResult {// 响应业务状态private Integer status;// 响应消息private String msg;// 响应中的数据private Object data;private String ok; // 不使用public static JSONResult build(Integer status, String msg, Object data) {return new JSONResult(status, msg, data);}public static JSONResult ok(Object data) {return new JSONResult(data);}public static JSONResult ok() {return new JSONResult(null);}public static JSONResult errorMsg(String msg) {return new JSONResult(500, msg, null);}public static JSONResult errorMap(Object data) {return new JSONResult(501, "error", data);}public static JSONResult errorTokenMsg(String msg) {return new JSONResult(502, msg, null);}public static JSONResult errorException(String msg) {return new JSONResult(555, msg, null);}public JSONResult() {}public JSONResult(Integer status, String msg, Object data) {this.status = status;this.msg = msg;this.data = data;}public JSONResult(Object data) {this.status = 200;this.msg = "OK";this.data = data;}public Boolean isOK() {return this.status == 200;}public Integer getStatus() {return status;}public void setStatus(Integer status) {this.status = status;}public String getMsg() {return msg;}public void setMsg(String msg) {this.msg = msg;}public Object getData() {return data;}public void setData(Object data) {this.data = data;}public String getOk() {return ok;}public void setOk(String ok) {this.ok = ok;}}

JwtUtils

package com.liuxia.jwt.util;import io.jsonwebtoken.Claims;
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.apache.commons.codec.binary.Base64;import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.util.Date;
import java.util.Map;
import java.util.UUID;/*** JWT验证过滤器：配置顺序 CorsFilte->JwtUtilsr-->StrutsPrepareAndExecuteFilter**/
public class JwtUtils {/*** JWT_WEB_TTL：WEBAPP应用中token的有效时间,默认30分钟*/public static final long JWT_WEB_TTL = 5 * 60 * 1000;/*** 将jwt令牌保存到header中的key*/public static final String JWT_HEADER_KEY = "jwt";public static final String JWT_VERIFICATION_KEY = "verificationJwt";// 指定签名的时候使用的签名算法，也就是header那部分，jjwt已经将这部分内容封装好了。private static final SignatureAlgorithm SIGNATURE_ALGORITHM = SignatureAlgorithm.HS256;private static final String JWT_SECRET = "f356cdce935c42328ad2001d7e9552a3";// JWT密匙private static final SecretKey JWT_KEY;// 使用JWT密匙生成的加密key
// private static final SecretKey JWT_VERIFICATION_KEY;// 使用JWT密匙生成的加密keystatic {byte[] encodedKey = Base64.decodeBase64(JWT_SECRET);JWT_KEY = new SecretKeySpec(encodedKey, 0, encodedKey.length, "AES");
//    这里我偷个懒，用户登录jwt密钥，与图形验证码jwt密钥搞成同一个
//    JWT_VERIFICATION_KEY = new SecretKeySpec(encodedKey, 0, encodedKey.length, "AES");}private JwtUtils() {}/*** 解密jwt，获得所有声明(包括标准和私有声明)* * @param jwt* @return* @throws Exception*/public static Claims parseJwt(String jwt) {Claims claims = Jwts.parser().setSigningKey(JWT_KEY).parseClaimsJws(jwt).getBody();return claims;}/*** 创建JWT令牌，签发时间为当前时间* * @param claims*            创建payload的私有声明（根据特定的业务需要添加，如果要拿这个做验证，一般是需要和jwt的接收方提前沟通好验证方式的）* @param ttlMillis*            JWT的有效时间(单位毫秒)，当前时间+有效时间=过期时间* @return jwt令牌*/public static String createJwt(Map<String, Object> claims, long ttlMillis) {// 生成JWT的时间，即签发时间long nowMillis = System.currentTimeMillis();// 下面就是在为payload添加各种标准声明和私有声明了// 这里其实就是new一个JwtBuilder，设置jwt的bodyJwtBuilder builder = Jwts.builder()// 如果有私有声明，一定要先设置这个自己创建的私有的声明，这个是给builder的claim赋值，一旦写在标准的声明赋值之后，就是覆盖了那些标准的声明的.setClaims(claims)// 设置jti(JWT ID)：是JWT的唯一标识，根据业务需要，这个可以设置为一个不重复的值，主要用来作为一次性token,从而回避重放攻击。// 可以在未登陆前作为身份标识使用.setId(UUID.randomUUID().toString().replace("-", ""))// iss(Issuser)签发者，写死// .setIssuer("zking")// iat: jwt的签发时间.setIssuedAt(new Date(nowMillis))// 代表这个JWT的主体，即它的所有人，这个是一个json格式的字符串，可放数据{"uid":"zs"}。此处没放// .setSubject("{}")// 设置签名使用的签名算法和签名使用的秘钥.signWith(SIGNATURE_ALGORITHM, JWT_KEY)// 设置JWT的过期时间.setExpiration(new Date(nowMillis + ttlMillis));return builder.compact();}/*** 复制jwt，并重新设置签发时间(为当前时间)和失效时间* * @param jwt*            被复制的jwt令牌* @param ttlMillis*            jwt的有效时间(单位毫秒)，当前时间+有效时间=过期时间* @return*/public static String copyJwt(String jwt, Long ttlMillis) {Claims claims = parseJwt(jwt);// 生成JWT的时间，即签发时间long nowMillis = System.currentTimeMillis();// 下面就是在为payload添加各种标准声明和私有声明了// 这里其实就是new一个JwtBuilder，设置jwt的bodyJwtBuilder builder = Jwts.builder()// 如果有私有声明，一定要先设置这个自己创建的私有的声明，这个是给builder的claim赋值，一旦写在标准的声明赋值之后，就是覆盖了那些标准的声明的.setClaims(claims)// 设置jti(JWT ID)：是JWT的唯一标识，根据业务需要，这个可以设置为一个不重复的值，主要用来作为一次性token,从而回避重放攻击。// 可以在未登陆前作为身份标识使用//.setId(UUID.randomUUID().toString().replace("-", ""))// iss(Issuser)签发者，写死// .setIssuer("zking")// iat: jwt的签发时间.setIssuedAt(new Date(nowMillis))// 代表这个JWT的主体，即它的所有人，这个是一个json格式的字符串，可放数据{"uid":"zs"}。此处没放// .setSubject("{}")// 设置签名使用的签名算法和签名使用的秘钥.signWith(SIGNATURE_ALGORITHM, JWT_KEY)// 设置JWT的过期时间.setExpiration(new Date(nowMillis + ttlMillis));return builder.compact();}public static Claims validateJwtToken(String jwt) {Claims claims = null;try {if (null != jwt) {claims = JwtUtils.parseJwt(jwt);}} catch (Exception e) {e.printStackTrace();}return claims;}
}

VerifyCodeUtil

package com.liuxia.jwt.util;import java.util.Random;public class VerifyCodeUtil {/**生成N位数字和字母混合的验证码* @param  num 验证码位数* @return code 生成的验证码字符串*/public static String produceNumAndChar(int num){Random random = new Random();String code = "";String ch = "ABCDEFGHIJKLMNPQRSTUVWXYZ";String n = "123456789";for(int i=0;i<num;i++){int flag = random.nextInt(2);if(flag==0){//数字code+=n.charAt(random.nextInt(n.length()));}else{//字母code+=ch.charAt(random.nextInt(ch.length()));}}return code;}
}

User

package com.liuxia.jwt.model;public class User {private String uname;private String pwd;public User(String uname, String pwd) {this.uname = uname;this.pwd = pwd;}public User() {super();}public String getUname() {return uname;}public void setUname(String uname) {this.uname = uname;}public String getPwd() {return pwd;}public void setPwd(String pwd) {this.pwd = pwd;}
}

UserMapper.xml

<select id="login" resultType="com.liuxia.jwt.model.User" parameterType="com.liuxia.jwt.model.User">select<include refid="Base_Column_List" />from t_vue_userwhere uname = #{uname} and pwd = #{pwd}</select>

UserMapper


package com.liuxia.jwt.mapper;import com.liuxia.jwt.model.User;
import org.springframework.stereotype.Repository;@Repository
public interface UserMapper {int deleteByPrimaryKey(String uname);int insert(User record);int insertSelective(User record);User selectByPrimaryKey(String uname);int updateByPrimaryKeySelective(User record);int updateByPrimaryKey(User record);User login(User user);}

Service层

package com.liuxia.jwt.service;import com.liuxia.jwt.model.User;public interface UserService {public User login(User user);
}

UserServiceImpl

package com.liuxia.jwt.service.impl;import com.liuxia.jwt.mapper.UserMapper;
import com.liuxia.jwt.model.User;
import com.liuxia.jwt.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;@Service
public class UserServiceImpl implements UserService {@Autowiredprivate UserMapper userMapper; ;@Overridepublic User login(User user) {return userMapper.login(user);}
}

UserController

package com.liuxia.jwt.controller;import com.liuxia.jwt.model.User;
import com.liuxia.jwt.service.UserService;
import com.liuxia.jwt.util.ImageUtil;
import com.liuxia.jwt.util.JSONResult;
import com.liuxia.jwt.util.JwtUtils;
import com.liuxia.jwt.util.VerifyCodeUtil;
import io.jsonwebtoken.Claims;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;@Controller
@RequestMapping("/vue/user")
public class UserController {private static final String VERIFICATION_CODE = "verificationCode_";@Autowiredprivate UserService userService;@Autowiredprivate RedisTemplate redisTemplate;@RequestMapping("/login")@ResponseBodypublic JSONResult login(User u, HttpServletRequest request, HttpServletResponse response){//获取用户输入的验证码String userVerificationCode = request.getParameter("verificationCode");//获取验证码jwt令牌String userJwt = request.getHeader(JwtUtils.JWT_VERIFICATION_KEY);//获取到保存在redis中的验证码Object redisVerificationCode =  redisTemplate.opsForValue().get(VERIFICATION_CODE + userJwt) ;//        这里存在两种情况：1、令牌超时   2、验证码超时if(StringUtils.isEmpty(redisVerificationCode)){return JSONResult.errorMsg("你的验证码已超时");}if(!redisVerificationCode.toString().equalsIgnoreCase(userVerificationCode)){return JSONResult.errorMsg("验证码错误");}User user = userService.login(u);//判断是否登录成功if(user != null){Map<String,Object> map=new HashMap<String, Object>();map.put("User", user);//这是颁发用户登录成功的jwt令牌String jwt= JwtUtils.createJwt(map, JwtUtils.JWT_WEB_TTL);response.setHeader(JwtUtils.JWT_HEADER_KEY, jwt);return JSONResult.ok(user);}else {return JSONResult.errorMsg("密码或账户错误");}}/**生成图片验证码*/@RequestMapping("/verificationCode")@ResponseBodypublic String verificationCode(HttpServletRequest req, HttpServletResponse resp) throws IOException {//生成验证码随机数String word = VerifyCodeUtil.produceNumAndChar(4);
//        获取用户的jwt令牌String userVerificationJwt = req.getHeader(JwtUtils.JWT_VERIFICATION_KEY);//验证码令牌Claims claims = JwtUtils.validateJwtToken(userVerificationJwt);if(claims == null){//如果用户令牌过期那么对应存放在redis中的数据也要清空if(!StringUtils.isEmpty(userVerificationJwt)){redisTemplate.expire(VERIFICATION_CODE + userVerificationJwt, 1, TimeUnit.DAYS);}userVerificationJwt =  JwtUtils.createJwt(new HashMap<String, Object>() ,JwtUtils.JWT_WEB_TTL);//将jwt令牌放入 response head中resp.setHeader(JwtUtils.JWT_VERIFICATION_KEY, userVerificationJwt);}//刷新缓存，更新验证码redisTemplate.opsForValue().set(VERIFICATION_CODE + userVerificationJwt , word,60, TimeUnit.SECONDS);//生成图片String code = "data:image/png;base64," + ImageUtil.createImageWithVerifyCode(word, 116,40);;return code;}
}

Web.xml

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"version="3.1"><display-name>Archetype Created Web Application</display-name><context-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext.xml</param-value></context-param><!-- 读取Spring上下文的监听器 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 解决cors跨域问题过滤器 --><filter><filter-name>corsFilter</filter-name><filter-class>com.liuxia.jwt.util.CorsFilter</filter-class></filter><filter-mapping><filter-name>corsFilter</filter-name><url-pattern>/*</url-pattern></filter-mapping><!-- 解决jwt问题的过滤器 --><!--<filter>--><!--<filter-name>jwtFilter</filter-name>--><!--<filter-class>com.javaxl.ssm.util.JwtFilter</filter-class>--><!--</filter>--><!--<filter-mapping>--><!--<filter-name>jwtFilter</filter-name>--><!--<url-pattern>/*</url-pattern>--><!--</filter-mapping>--><!-- Spring MVC servlet --><servlet><servlet-name>SpringMVC</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><!--此参数可以不配置，默认值为：/WEB-INF/springmvc-servlet.xml--><init-param><param-name>contextConfigLocation</param-name><param-value>WEB-INF/springmvc-servlet.xml</param-value></init-param><load-on-startup>1</load-on-startup><!--web.xml 3.0的新特性，是否支持异步--><async-supported>true</async-supported></servlet><servlet-mapping><servlet-name>SpringMVC</servlet-name><url-pattern>/</url-pattern></servlet-mapping>
</web-app>