Pre Merge pull request !427 from WrV/master

This commit is contained in:
WrV 2022-02-20 08:08:04 +00:00 committed by Gitee
commit d5a43531c2
11 changed files with 560 additions and 375 deletions

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@ -1,7 +1,15 @@
package com.ruoyi.web.controller.system;
import java.security.*;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import com.ruoyi.common.annotation.DecryptLogin;
import com.ruoyi.common.annotation.RateLimiter;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.enums.LimitType;
import org.apache.commons.codec.binary.Base64;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
@ -34,12 +42,33 @@ public class SysLoginController
@Autowired
private SysPermissionService permissionService;
/**
* 登录前先生成一个RSA密钥LoginBody中的账号密码进行加密
* 公钥返回给前端加密使用
* 私钥存入redis等待登陆时解密使用
*
* 这个接口需要加入白名单所以使用限流器 RateLimiter 对IP限制每秒请求次数
* @return public key
*/
@RateLimiter(time = 1, count = 5, limitType = LimitType.IP)
@GetMapping("/preLogin")
public AjaxResult preLogin() {
String publicKey;
try {
publicKey = loginService.generateRSA();
} catch (NoSuchAlgorithmException | NoSuchProviderException e) {
return AjaxResult.error("生成RSA密钥对失败");
}
return AjaxResult.success("", publicKey);
}
/**
* 登录方法
*
* @param loginBody 登录信息
* @return 结果
*/
@DecryptLogin
@PostMapping("/login")
public AjaxResult login(@RequestBody LoginBody loginBody)
{

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@ -0,0 +1,16 @@
package com.ruoyi.common.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* RSA解密注解
* 使用该注解可以对已经加密的参数进行解密
* @author wrw
*/
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface DecryptLogin {
}

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@ -39,6 +39,11 @@ public class Constants
*/
public static final String FAIL = "1";
/**
* 预登录 redis key
*/
public static final String PRE_LOGIN_KEY = "pre_login_key:";
/**
* 登录成功
*/

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@ -27,6 +27,11 @@ public class LoginBody
*/
private String uuid;
/**
* RSA公钥
*/
private String publicKey;
public String getUsername()
{
return username;
@ -66,4 +71,8 @@ public class LoginBody
{
this.uuid = uuid;
}
public String getPublicKey() {
return publicKey;
}
}

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@ -0,0 +1,61 @@
package com.ruoyi.framework.aspectj;
import com.ruoyi.common.annotation.DecryptLogin;
import com.ruoyi.common.constant.Constants;
import com.ruoyi.common.core.domain.model.LoginBody;
import com.ruoyi.common.core.redis.RedisCache;
import com.ruoyi.common.exception.user.UserException;
import com.ruoyi.common.utils.StringUtils;
import org.apache.commons.codec.binary.Base64;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import javax.crypto.BadPaddingException;
import javax.crypto.Cipher;
import javax.crypto.IllegalBlockSizeException;
import javax.crypto.NoSuchPaddingException;
import java.security.InvalidKeyException;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
/**
* RSA解密
*
* @author wrw
*/
@Aspect
@Component
public class DecryptParameters {
@Autowired
private RedisCache redisCache;
@Before("@annotation(decrypt)")
public void doBefore(JoinPoint point, DecryptLogin decrypt) throws IllegalBlockSizeException, BadPaddingException, NoSuchAlgorithmException, InvalidKeySpecException, InvalidKeyException, NoSuchPaddingException {
LoginBody pointArg = (LoginBody) point.getArgs()[0];
//从缓存里获取私钥
String loginPrivateKey = redisCache.getCacheObject(Constants.PRE_LOGIN_KEY + pointArg.getPublicKey());
if (StringUtils.isEmpty(loginPrivateKey)) {
throw new UserException("RSA密钥对已过期", point.getArgs());
}
//初始化解密密钥
PKCS8EncodedKeySpec pkcs8EncodedKeySpec5 = new PKCS8EncodedKeySpec(Base64.decodeBase64(loginPrivateKey));
//创建密钥工厂
KeyFactory keyFactory = KeyFactory.getInstance("RSA");
//解析密钥
PrivateKey privateKey = keyFactory.generatePrivate(pkcs8EncodedKeySpec5);
Cipher cipher = Cipher.getInstance("RSA");
cipher.init(Cipher.DECRYPT_MODE, privateKey);
//解密
byte[] username = cipher.doFinal(Base64.decodeBase64(pointArg.getUsername()));
byte[] password = cipher.doFinal(Base64.decodeBase64(pointArg.getPassword()));
pointArg.setUsername(new String(username));
pointArg.setPassword(new String(password));
}
}

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@ -97,7 +97,7 @@ public class SecurityConfig extends WebSecurityConfigurerAdapter
// 过滤请求
.authorizeRequests()
// 对于登录login 注册register 验证码captchaImage 允许匿名访问
.antMatchers("/login", "/register", "/captchaImage").anonymous()
.antMatchers("/preLogin", "/login", "/register", "/captchaImage").anonymous()
.antMatchers(
HttpMethod.GET,
"/",

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@ -1,6 +1,8 @@
package com.ruoyi.framework.web.service;
import javax.annotation.Resource;
import org.apache.commons.codec.binary.Base64;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
@ -25,6 +27,9 @@ import com.ruoyi.framework.manager.factory.AsyncFactory;
import com.ruoyi.system.service.ISysConfigService;
import com.ruoyi.system.service.ISysUserService;
import java.security.*;
import java.util.concurrent.TimeUnit;
/**
* 登录校验方法
*
@ -131,4 +136,25 @@ public class SysLoginService
sysUser.setLoginDate(DateUtils.getNowDate());
userService.updateUserProfile(sysUser);
}
/**
* 生成RSA密钥对
* @return 公钥
*/
public String generateRSA() throws NoSuchAlgorithmException, NoSuchProviderException {
KeyPairGenerator gen = KeyPairGenerator.getInstance("RSA", "SunRsaSign");
gen.initialize(512, new SecureRandom());
KeyPair pair = gen.generateKeyPair();
byte[] privateKey = pair.getPrivate().getEncoded();
byte[] publicKey = pair.getPublic().getEncoded();
privateKey = Base64.encodeBase64(privateKey);
publicKey = Base64.encodeBase64(publicKey);
//私钥存入缓存
redisCache.setCacheObject(Constants.PRE_LOGIN_KEY + new String(publicKey), new String(privateKey), 30, TimeUnit.SECONDS);
//返回公钥
return new String(publicKey);
}
}

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@ -1,59 +1,75 @@
import request from '@/utils/request'
// 登录方法
export function login(username, password, code, uuid) {
const data = {
username,
password,
code,
uuid
}
return request({
url: '/login',
headers: {
isToken: false
},
method: 'post',
data: data
})
}
// 注册方法
export function register(data) {
return request({
url: '/register',
headers: {
isToken: false
},
method: 'post',
data: data
})
}
// 获取用户详细信息
export function getInfo() {
return request({
url: '/getInfo',
method: 'get'
})
}
// 退出方法
export function logout() {
return request({
url: '/logout',
method: 'post'
})
}
// 获取验证码
export function getCodeImg() {
return request({
url: '/captchaImage',
headers: {
isToken: false
},
method: 'get',
timeout: 20000
})
}
import request from '@/utils/request'
// 预登陆获取RSA密钥
export function preLogin() {
return new Promise(resolve => {
request({
url: '/preLogin',
headers: {
isToken: false
},
method: 'get'
}).then(res =>{
resolve(res.data)
})
})
}
// 登录方法
export function login(username, password, code, uuid, publicKey) {
const data = {
username,
password,
code,
uuid,
publicKey
}
return request({
url: '/login',
headers: {
isToken: false
},
method: 'post',
data: data
})
}
// 注册方法
export function register(data) {
return request({
url: '/register',
headers: {
isToken: false
},
method: 'post',
data: data
})
}
// 获取用户详细信息
export function getInfo() {
return request({
url: '/getInfo',
method: 'get'
})
}
// 退出方法
export function logout() {
return request({
url: '/logout',
method: 'post'
})
}
// 获取验证码
export function getCodeImg() {
return request({
url: '/captchaImage',
headers: {
isToken: false
},
method: 'get',
timeout: 20000
})
}

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@ -1,96 +1,97 @@
import { login, logout, getInfo } from '@/api/login'
import { getToken, setToken, removeToken } from '@/utils/auth'
const user = {
state: {
token: getToken(),
name: '',
avatar: '',
roles: [],
permissions: []
},
mutations: {
SET_TOKEN: (state, token) => {
state.token = token
},
SET_NAME: (state, name) => {
state.name = name
},
SET_AVATAR: (state, avatar) => {
state.avatar = avatar
},
SET_ROLES: (state, roles) => {
state.roles = roles
},
SET_PERMISSIONS: (state, permissions) => {
state.permissions = permissions
}
},
actions: {
// 登录
Login({ commit }, userInfo) {
const username = userInfo.username.trim()
const password = userInfo.password
const code = userInfo.code
const uuid = userInfo.uuid
return new Promise((resolve, reject) => {
login(username, password, code, uuid).then(res => {
setToken(res.token)
commit('SET_TOKEN', res.token)
resolve()
}).catch(error => {
reject(error)
})
})
},
// 获取用户信息
GetInfo({ commit, state }) {
return new Promise((resolve, reject) => {
getInfo().then(res => {
const user = res.user
const avatar = user.avatar == "" ? require("@/assets/images/profile.jpg") : process.env.VUE_APP_BASE_API + user.avatar;
if (res.roles && res.roles.length > 0) { // 验证返回的roles是否是一个非空数组
commit('SET_ROLES', res.roles)
commit('SET_PERMISSIONS', res.permissions)
} else {
commit('SET_ROLES', ['ROLE_DEFAULT'])
}
commit('SET_NAME', user.userName)
commit('SET_AVATAR', avatar)
resolve(res)
}).catch(error => {
reject(error)
})
})
},
// 退出系统
LogOut({ commit, state }) {
return new Promise((resolve, reject) => {
logout(state.token).then(() => {
commit('SET_TOKEN', '')
commit('SET_ROLES', [])
commit('SET_PERMISSIONS', [])
removeToken()
resolve()
}).catch(error => {
reject(error)
})
})
},
// 前端 登出
FedLogOut({ commit }) {
return new Promise(resolve => {
commit('SET_TOKEN', '')
removeToken()
resolve()
})
}
}
}
export default user
import { login, logout, getInfo } from '@/api/login'
import { getToken, setToken, removeToken } from '@/utils/auth'
const user = {
state: {
token: getToken(),
name: '',
avatar: '',
roles: [],
permissions: []
},
mutations: {
SET_TOKEN: (state, token) => {
state.token = token
},
SET_NAME: (state, name) => {
state.name = name
},
SET_AVATAR: (state, avatar) => {
state.avatar = avatar
},
SET_ROLES: (state, roles) => {
state.roles = roles
},
SET_PERMISSIONS: (state, permissions) => {
state.permissions = permissions
}
},
actions: {
// 登录
Login({ commit }, userInfo) {
const username = userInfo.username.trim()
const password = userInfo.password
const code = userInfo.code
const uuid = userInfo.uuid
const publicKey = userInfo.publicKey
return new Promise((resolve, reject) => {
login(username, password, code, uuid, publicKey).then(res => {
setToken(res.token)
commit('SET_TOKEN', res.token)
resolve()
}).catch(error => {
reject(error)
})
})
},
// 获取用户信息
GetInfo({ commit, state }) {
return new Promise((resolve, reject) => {
getInfo().then(res => {
const user = res.user
const avatar = user.avatar == "" ? require("@/assets/images/profile.jpg") : process.env.VUE_APP_BASE_API + user.avatar;
if (res.roles && res.roles.length > 0) { // 验证返回的roles是否是一个非空数组
commit('SET_ROLES', res.roles)
commit('SET_PERMISSIONS', res.permissions)
} else {
commit('SET_ROLES', ['ROLE_DEFAULT'])
}
commit('SET_NAME', user.userName)
commit('SET_AVATAR', avatar)
resolve(res)
}).catch(error => {
reject(error)
})
})
},
// 退出系统
LogOut({ commit, state }) {
return new Promise((resolve, reject) => {
logout(state.token).then(() => {
commit('SET_TOKEN', '')
commit('SET_ROLES', [])
commit('SET_PERMISSIONS', [])
removeToken()
resolve()
}).catch(error => {
reject(error)
})
})
},
// 前端 登出
FedLogOut({ commit }) {
return new Promise(resolve => {
commit('SET_TOKEN', '')
removeToken()
resolve()
})
}
}
}
export default user

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@ -28,3 +28,15 @@ export function decrypt(txt) {
return encryptor.decrypt(txt) // 对数据进行解密
}
/**
* 对登录的用户名密码加密
* @param loginPublicKey
* @param txt 待加密文本
* @returns {Promise<ArrayBuffer>}
*/
export function encryptLogin(loginPublicKey, txt) {
const encrypt = new JSEncrypt();
encrypt.setPublicKey(loginPublicKey);
return encrypt.encrypt(txt);
}

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@ -1,219 +1,229 @@
<template>
<div class="login">
<el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
<h3 class="title">若依后台管理系统</h3>
<el-form-item prop="username">
<el-input
v-model="loginForm.username"
type="text"
auto-complete="off"
placeholder="账号"
>
<svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
</el-input>
</el-form-item>
<el-form-item prop="password">
<el-input
v-model="loginForm.password"
type="password"
auto-complete="off"
placeholder="密码"
@keyup.enter.native="handleLogin"
>
<svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
</el-input>
</el-form-item>
<el-form-item prop="code" v-if="captchaOnOff">
<el-input
v-model="loginForm.code"
auto-complete="off"
placeholder="验证码"
style="width: 63%"
@keyup.enter.native="handleLogin"
>
<svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
</el-input>
<div class="login-code">
<img :src="codeUrl" @click="getCode" class="login-code-img"/>
</div>
</el-form-item>
<el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
<el-form-item style="width:100%;">
<el-button
:loading="loading"
size="medium"
type="primary"
style="width:100%;"
@click.native.prevent="handleLogin"
>
<span v-if="!loading"> </span>
<span v-else> 中...</span>
</el-button>
<div style="float: right;" v-if="register">
<router-link class="link-type" :to="'/register'">立即注册</router-link>
</div>
</el-form-item>
</el-form>
<!-- 底部 -->
<div class="el-login-footer">
<span>Copyright © 2018-2022 ruoyi.vip All Rights Reserved.</span>
</div>
</div>
</template>
<script>
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt } from '@/utils/jsencrypt'
export default {
name: "Login",
data() {
return {
codeUrl: "",
loginForm: {
username: "admin",
password: "admin123",
rememberMe: false,
code: "",
uuid: ""
},
loginRules: {
username: [
{ required: true, trigger: "blur", message: "请输入您的账号" }
],
password: [
{ required: true, trigger: "blur", message: "请输入您的密码" }
],
code: [{ required: true, trigger: "change", message: "请输入验证码" }]
},
loading: false,
//
captchaOnOff: true,
//
register: false,
redirect: undefined
};
},
watch: {
$route: {
handler: function(route) {
this.redirect = route.query && route.query.redirect;
},
immediate: true
}
},
created() {
this.getCode();
this.getCookie();
},
methods: {
getCode() {
getCodeImg().then(res => {
this.captchaOnOff = res.captchaOnOff === undefined ? true : res.captchaOnOff;
if (this.captchaOnOff) {
this.codeUrl = "data:image/gif;base64," + res.img;
this.loginForm.uuid = res.uuid;
}
});
},
getCookie() {
const username = Cookies.get("username");
const password = Cookies.get("password");
const rememberMe = Cookies.get('rememberMe')
this.loginForm = {
username: username === undefined ? this.loginForm.username : username,
password: password === undefined ? this.loginForm.password : decrypt(password),
rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
};
},
handleLogin() {
this.$refs.loginForm.validate(valid => {
if (valid) {
this.loading = true;
if (this.loginForm.rememberMe) {
Cookies.set("username", this.loginForm.username, { expires: 30 });
Cookies.set("password", encrypt(this.loginForm.password), { expires: 30 });
Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 });
} else {
Cookies.remove("username");
Cookies.remove("password");
Cookies.remove('rememberMe');
}
this.$store.dispatch("Login", this.loginForm).then(() => {
this.$router.push({ path: this.redirect || "/" }).catch(()=>{});
}).catch(() => {
this.loading = false;
if (this.captchaOnOff) {
this.getCode();
}
});
}
});
}
}
};
</script>
<style rel="stylesheet/scss" lang="scss">
.login {
display: flex;
justify-content: center;
align-items: center;
height: 100%;
background-image: url("../assets/images/login-background.jpg");
background-size: cover;
}
.title {
margin: 0px auto 30px auto;
text-align: center;
color: #707070;
}
.login-form {
border-radius: 6px;
background: #ffffff;
width: 400px;
padding: 25px 25px 5px 25px;
.el-input {
height: 38px;
input {
height: 38px;
}
}
.input-icon {
height: 39px;
width: 14px;
margin-left: 2px;
}
}
.login-tip {
font-size: 13px;
text-align: center;
color: #bfbfbf;
}
.login-code {
width: 33%;
height: 38px;
float: right;
img {
cursor: pointer;
vertical-align: middle;
}
}
.el-login-footer {
height: 40px;
line-height: 40px;
position: fixed;
bottom: 0;
width: 100%;
text-align: center;
color: #fff;
font-family: Arial;
font-size: 12px;
letter-spacing: 1px;
}
.login-code-img {
height: 38px;
}
</style>
<template>
<div class="login">
<el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
<h3 class="title">若依后台管理系统</h3>
<el-form-item prop="username">
<el-input
v-model="loginForm.username"
type="text"
auto-complete="off"
placeholder="账号"
>
<svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon" />
</el-input>
</el-form-item>
<el-form-item prop="password">
<el-input
v-model="loginForm.password"
type="password"
auto-complete="off"
placeholder="密码"
@keyup.enter.native="handleLogin"
>
<svg-icon slot="prefix" icon-class="password" class="el-input__icon input-icon" />
</el-input>
</el-form-item>
<el-form-item prop="code" v-if="captchaOnOff">
<el-input
v-model="loginForm.code"
auto-complete="off"
placeholder="验证码"
style="width: 63%"
@keyup.enter.native="handleLogin"
>
<svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon" />
</el-input>
<div class="login-code">
<img :src="codeUrl" @click="getCode" class="login-code-img"/>
</div>
</el-form-item>
<el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>
<el-form-item style="width:100%;">
<el-button
:loading="loading"
size="medium"
type="primary"
style="width:100%;"
@click.native.prevent="handleLogin"
>
<span v-if="!loading"> </span>
<span v-else> 中...</span>
</el-button>
<div style="float: right;" v-if="register">
<router-link class="link-type" :to="'/register'">立即注册</router-link>
</div>
</el-form-item>
</el-form>
<!-- 底部 -->
<div class="el-login-footer">
<span>Copyright © 2018-2022 ruoyi.vip All Rights Reserved.</span>
</div>
</div>
</template>
<script>
import { preLogin } from "@/api/login";
import { getCodeImg } from "@/api/login";
import Cookies from "js-cookie";
import { encrypt, decrypt, encryptLogin } from '@/utils/jsencrypt'
export default {
name: "Login",
data() {
return {
codeUrl: "",
loginForm: {
username: "admin",
password: "admin123",
rememberMe: false,
code: "",
uuid: ""
},
loginRules: {
username: [
{ required: true, trigger: "blur", message: "请输入您的账号" }
],
password: [
{ required: true, trigger: "blur", message: "请输入您的密码" }
],
code: [{ required: true, trigger: "change", message: "请输入验证码" }]
},
loading: false,
//
captchaOnOff: true,
//
register: false,
redirect: undefined
};
},
watch: {
$route: {
handler: function(route) {
this.redirect = route.query && route.query.redirect;
},
immediate: true
}
},
created() {
this.getCode();
this.getCookie();
},
methods: {
getCode() {
getCodeImg().then(res => {
this.captchaOnOff = res.captchaOnOff === undefined ? true : res.captchaOnOff;
if (this.captchaOnOff) {
this.codeUrl = "data:image/gif;base64," + res.img;
this.loginForm.uuid = res.uuid;
}
});
},
getCookie() {
const username = Cookies.get("username");
const password = Cookies.get("password");
const rememberMe = Cookies.get('rememberMe')
this.loginForm = {
username: username === undefined ? this.loginForm.username : username,
password: password === undefined ? this.loginForm.password : decrypt(password),
rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
};
},
async handleLogin() {
const login_public_key = await preLogin();
this.$refs.loginForm.validate(valid => {
if (valid) {
this.loading = true;
if (this.loginForm.rememberMe) {
Cookies.set("username", this.loginForm.username, { expires: 30 });
Cookies.set("password", encrypt(this.loginForm.password), { expires: 30 });
Cookies.set('rememberMe', this.loginForm.rememberMe, { expires: 30 });
} else {
Cookies.remove("username");
Cookies.remove("password");
Cookies.remove('rememberMe');
}
let authLoginForm = {};
// encrypt
authLoginForm.username = encryptLogin(login_public_key, this.loginForm.username);
authLoginForm.password = encryptLogin(login_public_key, this.loginForm.password);
authLoginForm.code = this.loginForm.code;
authLoginForm.uuid = this.loginForm.uuid;
authLoginForm.publicKey = login_public_key;
console.log(authLoginForm);
this.$store.dispatch("Login", authLoginForm).then(() => {
this.$router.push({ path: this.redirect || "/" }).catch(()=>{});
}).catch(() => {
this.loading = false;
if (this.captchaOnOff) {
this.getCode();
}
});
}
});
}
}
};
</script>
<style rel="stylesheet/scss" lang="scss">
.login {
display: flex;
justify-content: center;
align-items: center;
height: 100%;
background-image: url("../assets/images/login-background.jpg");
background-size: cover;
}
.title {
margin: 0px auto 30px auto;
text-align: center;
color: #707070;
}
.login-form {
border-radius: 6px;
background: #ffffff;
width: 400px;
padding: 25px 25px 5px 25px;
.el-input {
height: 38px;
input {
height: 38px;
}
}
.input-icon {
height: 39px;
width: 14px;
margin-left: 2px;
}
}
.login-tip {
font-size: 13px;
text-align: center;
color: #bfbfbf;
}
.login-code {
width: 33%;
height: 38px;
float: right;
img {
cursor: pointer;
vertical-align: middle;
}
}
.el-login-footer {
height: 40px;
line-height: 40px;
position: fixed;
bottom: 0;
width: 100%;
text-align: center;
color: #fff;
font-family: Arial;
font-size: 12px;
letter-spacing: 1px;
}
.login-code-img {
height: 38px;
}
</style>