springmvc文件上传AND jwt身份验证

提示：扫一扫查出行
【扫一扫了解最新限行尾号】
复制提示

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）

添加pom依赖

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

配置springservlet-mvc.xml

文件上传的方法

/**
* 文件上传的方法
* @param req
* @return
*/
@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:/xxx/"+fileName));
} catch (IOException e) {
e.printStackTrace();
}
return "redirect:/book/list";
}

upload.jsp

<%--
Created by IntelliJ IDEA.
User: 源
Date: 2019/10/30
Time: 18:12
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>讲解springmvc文件上传</title>
</head>
<body>
<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>
</body>
</html>

上传结果

通过浏览器进行访问

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

导入pom依赖

<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>

vue前端代码

State.js

export default {
resturantName: '天天餐馆',
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：nopass
verificationJwt: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

/**
* 对后台请求的地址的封装，URL格式如下：
* 模块名_实体名_操作
*/
export default {
// 'SERVER': 'http://localhost:8080/T216_SSH', //服务器
'SERVER': 'http://localhost:8080', // /webDemo/ssm 服务器
'SYSTEM_USER_DOLOGIN': '/vue/user/login', //用户登陆
'VERIFICATION': '/vue/user/verificationCode', //用户登陆
// 'SYSTEM_USER_DOLOGIN': '/vue/userAction_login.action', //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);
});

登录界面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> 
<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>

后端代码

Util类

CorsFilter

package com.yuan.util; import java.io.IOException; import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; /**
* 配置tomcat允许跨域访问
*
* @author Administrator
*
*/
public class CorsFilter implements Filter { @Override
public void init(FilterConfig filterConfig) throws ServletException {
} @Override
public 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jwt
resp.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);
} @Override
public void destroy() { }
}

ImageUtil

package com.yuan.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\n
return 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.yuan.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.yuan.util; import java.util.Date;
import java.util.Map;
import java.util.UUID; import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec; import org.apache.commons.codec.binary.Base64; import io.jsonwebtoken.Claims;
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm; /**
* 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key static {
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body
JwtBuilder 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body
JwtBuilder 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.yuan.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;
}
}

实体类User

package com.yuan.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

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yuan.mapper.UserMapper"> <select id="login" parameterType="java.lang.String" >
select
*
from t_vue_user
where uname = #{uname,jdbcType=VARCHAR}
</select> </mapper>

UserMapper

package com.yuan.mapper; import com.yuan.model.User;
import org.springframework.stereotype.Repository; @Repository
public interface UserMapper {
User login(User user);
}

UserService

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

UserServiceImpl

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

UserController

package com.yuan.controller; import com.yuan.model.User;
import com.yuan.service.UserService;
import com.yuan.util.ImageUtil;
import com.yuan.util.JSONResult;
import com.yuan.util.JwtUtils;
import com.yuan.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_"; @Autowired
private UserService userService; @Autowired
private RedisTemplate redisTemplate; @RequestMapping("/login")
@ResponseBody
public 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")
@ResponseBody
public 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> <welcome-file-list>
<welcome-file>login.jsp</welcome-file>
</welcome-file-list> <context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
 
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener> 
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

<async-supported>true</async-supported>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<filter>
<filter-name>corsFilter</filter-name>
<filter-class>com.yuan.util.CorsFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>corsFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping> 
<servlet>
<servlet-name>SpringMVC</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<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>

<async-supported>true</async-supported>
</servlet>
<servlet-mapping>
<servlet-name>SpringMVC</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping> </web-app>