前后端代码：GitHub地址
Vue-Cli创建前端项目
前端项目目录结构
我们需要Login.vue和Home.vue组件，一个用于登录，一个用于登录成功之后的跳转。
我们需要封装一些函数，这些函数用于在前后端交互时请求与响应的拦截。定义api.js
我们还需要删除原有的组件，清除App.vue的内容（不能删除）。
引入Element-ui
参考element-ui官网
在main.js文件中引入Element-ui
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| import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
Vue.use(ElementUI)
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在VScode终端输入npm i element-ui -S
在main.js中引入element-ui
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| import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
Vue.use(ElementUI);
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可以在package.json中查看是否引入成功
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| "dependencies": {
"element-ui": "^2.15.1",
"vue": "^2.5.2",
"vue-router": "^3.0.1"
},
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代码实现：
Login.vue
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| <template>
<div>
<el-form ref="loginform" :rules="rules" :model="loginForm" class="loginContainer">
<h3 class="loginTitle">系统登录</h3>
<el-form-item prop="username">
<!-- auto-complete="off" 禁止浏览器表单自动填充 -->
<!-- placeholder 输入框占位文本 -->
<el-input type="text" auto-complete="off" v-model="loginForm.username" placeholder="请输入用户名"></el-input>
</el-form-item>
<el-form-item prop="password">
<el-input type="password" v-model="loginForm.password" auto-complete="off" placeholder="请输入密码" ></el-input>
</el-form-item>
<el-form-item prop="code">
<el-input type="text" v-model="loginForm.code" size="normal" placeholder="点击图片更换验证码" auto-complete="off" style="width:250px;margin-right:5px"></el-input>
<img :src="captchaUrl" @click="updataCaptcha">
</el-form-item>
<el-button type="primary" style="width:100%" @click="submitLogin">登录</el-button>
</el-form>
</div>
</template>
<script>
import {postRequest} from "../utils/api";
export default {
name:"Login",
data(){
return{
captchaUrl:'captcha?time' + new Date(),
loginForm:{
username:'',
password:'',
code:''
},
// rules 表单的验证 required message：提示信息
rules:{
username:[{required:true,message:'请输入用户名',trigger:'blur'}],
password:[{required:true,message:'请输入密码',trigger:'blur'}],
code:[{required:true,message:'请输入验证码',trigger:'blur'}]
}
}
},
methods:{
//点击更新图片
updataCaptcha(){
this.captchaUrl = 'captcha?time=' + new Date();
},
//登录
submitLogin(){
this.$refs.loginForm.validate((valid) => {
if(valid){
postRequest('/login',this.loginForm).then(resp => {
console.log(resp);
if(resp){
const token = resp.object.tokenHead + resp.object.token;
window.sessionStorage.setItem('tokenStr',token)
this.$router.replace('/Home')
}
})
}else{
console.log('error submit');
return false;
}
})
}
}
}
</script>
<style>
.loginContainer{
border-radius: 15px;
background-clip: padding-box;
margin: 180px auto;
width: 350px;
padding: 15px 35px 15px 35px;
background:#fff;
border: 1px solid #eaeaea;
box-shadow: 0 0 25px #cac6c6;
}
.loginTitle{
margin: 0px auto 40px auto;
text-align: center;
}
</style>
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Api.js
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| import axios from 'axios'
import { Message } from 'element-ui'
import router from '../router'
axios.interceptors.request.use(config => {
if(window.sessionStorage.getItem('tokenStr')){
config.headers['Authorization'] = window.sessionStorage.getItem('tokenStr');
}
return config
},error => {
console.log(error);
})
axios.interceptors.response.use(success =>{
if(success.status && success.status == 200){
if(success.data.code == 500 || success.data.code == 401 || success.data.code == 403){
Message.error({message:success.data.message});
return;
}
if(success.data.message){
Message.success({message:success.data.message})
}
}
return success.data;
},error=>{
if(error.response.code == 504 || error.response.code == 404){
Message.error({message:'服务器崩了'});
}else if(error.response.code == 403){
Message.error({message:'权限不足'})
}else if(error.response.code == 401){
Message.error({message:'未登录'})
router.replace('/')
}else{
if(error.response.data.message){
Message.error({message:error.response.data.message})
}else{
Message.error({message:'未知错误'})
}
}
})
let base = '';
export const postRequest = (url,params) => {
return axios({
method:'post',
url:`${base}${url}`,
data:params
})
}
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跨域
在index.js中
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| proxyTable: {
'/ws':{
ws:true,
target: 'ws://localhost:8081'
},
'/':{
ws: false,
target: 'http://localhost:8081',
changeOrigin: true,
pathRewrite: {
'^/': '/'
}
}
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后端：
Config
CaptchaConfig： 验证码配置文件
JwtTokenFilter：JWT过滤器，判断受否拿到JWT，判断JWT是否有效
SecurityConfig：SpringSecurity 核心配置文件
Controller
CaptchaController：生成验证码
LoginController：登录
dao
AdminMapper：数据库查询
pojo
Admin：实现 UserDetails接口
LoginAdmin：用于接收前端传来的信息，属性有：用户名，密码，验证码
service
AdminServiceImpl：用于登录的主要逻辑
utils
JWTUtils：生成JWT
Respbean：向前端返回结果类
项目框架
引入依赖
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| <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
<version>0.9.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>com.github.axet</groupId>
<artifactId>kaptcha</artifactId>
<version>0.0.9</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
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配置文件
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| server.port=8081
spring.datasource.url=jdbc:mysql://localhost:3306/login
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.username=root
spring.datasource.password=root
mybatis.mapper-locations=classpath*:/Mappers/*.xml
jwt-tokenHeader=Authorization
jwt-secret=yeb-secret
jwt-expiration=604800
jwt-tokenHead=Bearer
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LoginController
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| @RestController
public class LoginController {
@Autowired
private AdminServiceImpl adminService;
@PostMapping("/login")
public RespBean login(@RequestBody LoginAdmin loginAdmin, HttpServletRequest request){
return adminService.login(loginAdmin.getUsername(),loginAdmin.getPassword(),loginAdmin.getCode(),request);
}
}
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LoginServiceImpl
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| @Service
public class AdminServiceImpl implements AdminService {
@Autowired
private AdminMapper adminMapper;
@Autowired
private UserDetailsService userDetailsService;
@Autowired
private PasswordEncoder passwordEncoder;
@Autowired
private JWTUtils jwtUtils;
@Value("${jwt-tokenHead}")
private String tokenHead;
@Override
public Admin selectAdminByName(String name) {
return adminMapper.selectOne(name);
}
@Override
public RespBean login(String username, String password, String code, HttpServletRequest request) {
String captcha = (String)request.getSession().getAttribute("captcha");
System.out.println(captcha);
if(StringUtils.isEmpty(code) || !captcha.equalsIgnoreCase(code)){
return RespBean.error("验证码错误，请重新输入");
}
UserDetails userDetails = userDetailsService.loadUserByUsername(username);
System.out.println(userDetails);
if(null == userDetails || !passwordEncoder.matches(password,userDetails.getPassword())){
return RespBean.error("用户名或密码错误");
}
if(!userDetails.isEnabled()){
return RespBean.error("账号被禁用,请联系管理员");
}
UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(userDetails, null, userDetails.getAuthorities());
SecurityContextHolder.getContext().setAuthentication(authenticationToken);
String token = jwtUtils.generateToken(userDetails);
Map<String, String> map = new HashMap<>();
map.put("token",token);
map.put("tokenHead",tokenHead);
return RespBean.success("登录成功",map);
}
}
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SecurityConfig
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@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Autowired
private AdminServiceImpl adminService;
@Override
@Bean
protected UserDetailsService userDetailsService() {
return username -> {
Admin admin = adminService.selectAdminByName(username);
if(null != admin){
return admin;
}
throw new UsernameNotFoundException("用户名或密码不正确");
};
}
@Bean
public PasswordEncoder passwordEncoder(){
return new BCryptPasswordEncoder();
}
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(userDetailsService()).passwordEncoder(passwordEncoder());
}
@Bean
public JwtTokenFilter jwtTokenFilter(){
return new JwtTokenFilter();
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http.csrf()
.disable()
.sessionManagement()
.sessionCreationPolicy(SessionCreationPolicy.STATELESS)
.and()
.authorizeRequests()
.antMatchers("/login","/logout")
.permitAll()
.anyRequest()
.authenticated()
.and()
.headers()
.cacheControl();
http.addFilterBefore(jwtTokenFilter(), UsernamePasswordAuthenticationFilter.class);
}
}
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