SPA项目开发之登录注册

CMD安装所需要的pom依赖

npm install element-ui -S  

npm install axios -S

npm install qs -S  

npm install vue-axios -S

package.json中查看安装的依赖

引入main.js配置

在项目中src目录下找到main.js,并在指定位置添加三行代码(main.js是入口文件,所以在这里引入就行,页面就不用引入了)
import Vue from 'vue'
import ElementUI from 'element-ui' //新添加1
import 'element-ui/lib/theme-chalk/index.css' //新添加2,避免后期打包样式不同,要放在import App from './App';之前
import App from './App'
import router from './router'

Vue.use(ElementUI) //新添加3
Vue.config.productionTip = false

main.js

 1 // The Vue build version to load with the `import` command
 2 // (runtime-only or standalone) has been set in webpack.base.conf with an alias.
 3 import Vue from 'vue'
 4 import 'element-ui/lib/theme-chalk/index.css'
 5 import App from './App'
 6 import router from './router'
 7 import ElementUI from 'element-ui'
 8 import axios from '@/api/http'      
 9 import VueAxios from 'vue-axios'
10 
11 Vue.use(VueAxios,axios)
12 Vue.use(ElementUI)
13 Vue.config.productionTip = false
14 
15 /* eslint-disable no-new */
16 new Vue({
17   el: '#app',
18   router,
19   components: { App },
20   template: '<App/>'
21 })

修改HelloWorld.vue添加elementUI组件查看效果

ElementUI官网https://element.eleme.cn/#/zh-CN

Vue+ElementUI设计登陆页面

在vue组件中,在style标签上添加scoped属性,以表示它的样式作用于当下的模块,很好的实现了样式私有化的目的

auto-complete="off"
autocomplete 属性是 HTML5 中的新属性,off-----禁用自动完成

App.vue

 1 <style> 
 2 html,
 3 body {
 4      100%;
 5     height: 100%;
 6     box-sizing: border-box;
 7     padding: 0px;
 8     margin: 0px;
 9 }
10 #app {
11     font-family: "Avenir", Helvetica, Arial, sans-serif;
12     -webkit-font-smoothing: antialiased;
13     -moz-osx-font-smoothing: grayscale;
14     color: #2c3e50;
15     widows: 100%;
16     height: 100%;
17 }
18 </style>

login.vue

 1 <style scoped>
 2   .login-wrap {
 3     box-sizing: border-box;
 4      100%;
 5     height: 100%;
 6     padding-top: 10%;
 7     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>
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                </g>
                <g id="Group-14" transform="translate(216.294700, 123.725600) rotate(-5.000000) translate(-216.294700, -123.725600) translate(106.294700, 35.225600)">
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                    <circle id="Oval-5-Copy-6" fill="#CFDAE6" cx="201.833333" cy="87.5" r="5.83333333"></circle>
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                    <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>
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                </g>
            </g>
        </g>
    </g>
</svg>);
 8     /* background-color: #112346; */
 9     background-repeat: no-repeat;
10     background-position: center right;
11     background-size: 100%;
12   }
13   .login-container {
14     border-radius: 10px;
15     margin: 0px auto;
16      350px;
17     padding: 30px 35px 15px 35px;
18     background: #fff;
19     border: 1px solid #eaeaea;
20     text-align: left;
21     box-shadow: 0 0 20px 2px rgba(0, 0, 0, 0.1);
22   }
23   .title {
24     margin: 0px auto 40px auto;
25     text-align: center;
26     color: #505458;
27   }
28 </style>

大概界面

跳转

login.vue

 1 <template>
 2   <div class=".login-wrap">
 3     <el-form :model="ruleForm" label-width="100px" class="demo-ruleForm login-container">
 4       <h3 style="text-align: center;">用户登陆</h3>
 5       <el-form-item label="用户名" prop="uname">
 6         <el-input type="uname" v-model="ruleForm.pass" autocomplete="off"></el-input>
 7       </el-form-item>
 8       <el-form-item label="密码" prop="pwd">
 9         <el-input type="pwd" v-model="ruleForm.checkPass" autocomplete="off"></el-input>
10       </el-form-item>
11       <el-form-item>
12         <el-row>
13           <el-col :span="24">
14             <div class="grid-content bg-purple-dark"></div>
15           </el-col>
16           <el-button style=" 100%;" type="primary" @click='doSub'>提交</el-button>
17         </el-row>
18         <el-row>
19           <el-col :span="12">
20             <div class="grid-content bg-purple-dark"></div>
21             <el-link type="success" @click='toLogin'>用户注册</el-link>
22           </el-col>
23           <el-col :span="12">
24             <div class="grid-content bg-purple-dark"></div>
25             <el-link type="success">找回密码</el-link>
26           </el-col>
27         </el-row>
28 
29       </el-form-item>
30     </el-form>
31   </div>
32 </template>
33 
34 <script>
35   export default {
36     data() {
37       return {
38         ruleForm: {
39           uname: ',',
40           pwd: ''
41         }
42       };
43     },
44     methods:{
45       doSub(){
46 
47       },
48       toReg(){
49       this.$router.push({
50         path:'/Reg'
51       })
52       }
53     }
54   }
55 </script>

index.js

 1 import Vue from 'vue'
 2 import Router from 'vue-router'
 3 import HelloWorld from '@/components/HelloWorld'
 4 import Login from '@/views/Login'
 5 import Reg from '@/views/Reg'
 6 
 7 Vue.use(Router)
 8 
 9 export default new Router({
10   routes: [
11     {
12       path: '/',
13       name: 'Login',
14       component: Login
15     },
16     {
17       path: '/Login',
18       name: 'Login',
19       component: Login
20     },
21     {
22       path: '/Reg',
23       name: 'Reg',
24       component: Reg
25     }
26   ]
27 })

后台交互(axios/qs/vue-axios)

axios
axios是vue2提倡使用的轻量版的ajax。它是基于promise的HTTP库。

vue.js有著名的全家桶系列:vue-router,vuex, vue-resource,再加上构建工具vue-cli,就是一个完整的vue项目的核心构成。
其中vue-resource是Vue.js的一款插件,它可以通过XMLHttpRequest或JSONP发起请求并处理响应,但在vue更新到2.0之后,

作者就宣告不再对vue-resource更新,而是推荐的axios

axios跨域问题

会一直报错:“http://127.0.0.1:8848' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header”
因为使用了前后端分离开发,跨域访问了,解决方案:需要配置tomcat允许跨域访问,
tomcat跨域配置方法很多,但最简单的方式是自己写一个过滤器CorsFilter实现,添加一个响应头

CorsFilter

 1 package com.zking.vue.util;
 2 
 3 import java.io.IOException;
 4 
 5 import javax.servlet.Filter;
 6 import javax.servlet.FilterChain;
 7 import javax.servlet.FilterConfig;
 8 import javax.servlet.ServletException;
 9 import javax.servlet.ServletRequest;
10 import javax.servlet.ServletResponse;
11 import javax.servlet.http.HttpServletRequest;
12 import javax.servlet.http.HttpServletResponse;
13 
14 /**
15  * 配置tomcat允许跨域访问
16  * 
17  * @author Administrator
18  *
19  */
20 public class CorsFilter implements Filter {
21 
22     @Override
23     public void init(FilterConfig filterConfig) throws ServletException {
24     }
25 
26     // @Override
27     // public void doFilter(ServletRequest servletRequest, ServletResponse
28     // servletResponse, FilterChain filterChain)
29     // throws IOException, ServletException {
30     // HttpServletResponse httpResponse = (HttpServletResponse) servletResponse;
31     //
32     // // Access-Control-Allow-Origin就是我们需要设置的域名
33     // // Access-Control-Allow-Headers跨域允许包含的头。
34     // // Access-Control-Allow-Methods是允许的请求方式
35     // httpResponse.addHeader("Access-Control-Allow-Origin", "*");// *,任何域名
36     // httpResponse.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT,
37     // DELETE");
38     // // httpResponse.setHeader("Access-Control-Allow-Headers", "Origin,
39     // // X-Requested-With, Content-Type, Accept");
40     //
41     // // 允许请求头Token
42     // httpResponse.setHeader("Access-Control-Allow-Headers",
43     // "Origin,X-Requested-With, Content-Type, Accept, Token");
44     // HttpServletRequest req = (HttpServletRequest) servletRequest;
45     // System.out.println("Token=" + req.getHeader("Token"));
46     // if("OPTIONS".equals(req.getMethod())) {
47     // return;
48     // }
49     //
50     //
51     // filterChain.doFilter(servletRequest, servletResponse);
52     // }
53 
54     @Override
55     public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
56             throws IOException, ServletException {
57         HttpServletResponse resp = (HttpServletResponse) servletResponse;
58         HttpServletRequest req = (HttpServletRequest) servletRequest;
59 
60         // Access-Control-Allow-Origin就是我们需要设置的域名
61         // Access-Control-Allow-Headers跨域允许包含的头。
62         // Access-Control-Allow-Methods是允许的请求方式
63         resp.setHeader("Access-Control-Allow-Origin", "*");// *,任何域名
64         resp.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, DELETE");
65         // resp.setHeader("Access-Control-Allow-Headers", "Origin,X-Requested-With,
66         // Content-Type, Accept");
67         // 允许客户端,发一个新的请求头jwt
68         resp.setHeader("Access-Control-Allow-Headers", "Origin,X-Requested-With, Content-Type, Accept, jwt");
69 
70         // 允许客户端,处理一个新的响应头jwt
71         resp.setHeader("Access-Control-Expose-Headers", "jwt");
72         // String sss = resp.getHeader("Access-Control-Expose-Headers");
73         // System.out.println("sss=" + sss);
74 
75         // 允许请求头Token
76         // httpResponse.setHeader("Access-Control-Allow-Headers","Origin,X-Requested-With,
77         // Content-Type, Accept, Token");
78         // System.out.println("Token=" + req.getHeader("Token"));
79 
80         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
81             return;
82         }
83         filterChain.doFilter(servletRequest, servletResponse);
84     }
85 
86     @Override
87     public void destroy() {
88 
89     }
90 }

axios 的 get/post 的区别( qs )

GET提交

1 let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
2 
3                 this.axios.get(url, { //注意数据是保存到json对象的params属性
4                     params: this.ruleForm
5                 }).then(function(response) {
6                     console.log(response);
7                 }).catch(function(error) {
8                     console.log(error);
9                 });

POST提交

1 let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
2                 
3                 this.axios.post(url, this.ruleForm).then(function(response) {
4                     console.log(response);
5                 }).catch(function(error) {
6                     console.log(error);
7                 });

axios.get提交没有问题,axios.post提交后台接收不到数据
因为POST提交的参数的格式是Request Payload,这样后台取不到数据的
解决方案:使用qs.js库

1 let url = 'http://localhost:8080/T216_SSH/vue/userAction_login.action';
2 
3                 this.axios.post(url, qs.stringify(this.ruleForm)).then(function(response) {
4                     console.log(response);
5                 }).catch(function(error) {
6                     console.log(error);
7                 });

qs.js它是一个url参数转化的js库

用法就两个:
var obj = qs.parse('a=b&c=d'); //将URL解析成对象的形式:{a:'b',c:'d'}
var str = qs.stringify(obj); //将对象 序列化成URL的形式,以&进行拼接:a=b&c=d'

T his 指针带来的变量污染

解决方案

 this.axios.post(url, this.ruleForm).then((response) =>
 1 methods:{
 2       doSub(){
 3       let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
 4       this.axios.post(url, this.ruleForm).then((response) => {
 5                           console.log(response);
 6                 if (response.data.code == 1) {
 7                   this.$message({
 8                             showClose: true,
 9                             message: response.data.msg,
10                             type: 'success'
11                           });
12                 }else{
13                    this.$message({
14                             showClose: true,
15                             message: response.data.msg,
16                             type: 'error'
17                           });
18                 }
19                       }).catch(function(error) {
20                           console.log(error);
21                       });
22       },

为简化axios使用,还可以使用axios全局配置及拦截器。

http.js

 1 /**
 2  * vue项目对axios的全局配置
 3  */
 4 import axios from 'axios'
 5 import qs from 'qs'
 6 
 7 //引入action模块,并添加至axios的类属性urls上
 8 import action from '@/api/action'
 9 axios.urls = action
10 
11 // axios默认配置
12 axios.defaults.timeout = 10000; // 超时时间
13 // axios.defaults.baseURL = 'http://localhost:8080/j2ee15'; // 默认地址
14 axios.defaults.baseURL = action.SERVER;
15 
16 //整理数据
17 // 只适用于 POST,PUT,PATCH,transformRequest` 允许在向服务器发送前,修改请求数据
18 axios.defaults.transformRequest = function(data) {
19     data = qs.stringify(data);
20     return data;
21 };
22 
23 
24 // 请求拦截器
25 axios.interceptors.request.use(function(config) {
26     // var jwt = window.vm.$store.getters.getJwt;
27     // config.headers['jwt'] = jwt;
28     return config;
29 }, function(error) {
30     return Promise.reject(error);
31 });
32 
33 // 响应拦截器
34 axios.interceptors.response.use(function(response) {
35     // debugger;
36     // var jwt = response.headers['jwt'];
37     // if(jwt){
38     //     window.vm.$store.commit('setJwt',{jwt:jwt});
39     // }
40     return response;
41 }, function(error) {
42     return Promise.reject(error);
43 });
44 
45 // // 路由请求拦截
46 // // http request 拦截器
47 // axios.interceptors.request.use(
48 //     config => {
49 //         //config.data = JSON.stringify(config.data);  
50 //         //config.headers['Content-Type'] = 'application/json;charset=UTF-8';
51 //         //config.headers['Token'] = 'abcxyz';
52 //         //判断是否存在ticket,如果存在的话,则每个http header都加上ticket
53 //         // if (cookie.get("token")) {
54 //         //     //用户每次操作,都将cookie设置成2小时
55 //         //     cookie.set("token", cookie.get("token"), 1 / 12)
56 //         //     cookie.set("name", cookie.get("name"), 1 / 12)
57 //         //     config.headers.token = cookie.get("token");
58 //         //     config.headers.name = cookie.get("name");
59 //         // }
60 //         return config;
61 //     },
62 //     error => {
63 //         return Promise.reject(error.response);
64 //     });
65 
66 // // 路由响应拦截
67 // // http response 拦截器
68 // axios.interceptors.response.use(
69 //     response => {
70 //         if (response.data.resultCode == "404") {
71 //             console.log("response.data.resultCode是404")
72 //             // 返回 错误代码-1 清除ticket信息并跳转到登录页面
73 //             //      cookie.del("ticket")
74 //             //      window.location.href='http://login.com'
75 //             return
76 //         } else {
77 //             return response;
78 //         }
79 //     },
80 //     error => {
81 //         return Promise.reject(error.response) // 返回接口返回的错误信息
82 //     });
83 
84 
85 
86 export default axios;

建议对请求地址进行封装

/**
 * 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
    '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];
    }
}

Login.vue

  1 <template>
  2   <div class=".login-wrap">
  3     <el-form :model="ruleForm" label-width="100px" class="demo-ruleForm login-container">
  4       <h3 style="text-align: center;">用户登录</h3>
  5       <el-form-item label="用户名" prop="uname">
  6         <el-input type="uname" v-model="ruleForm.uname" autocomplete="off"></el-input>
  7       </el-form-item>
  8       <el-form-item label="密码" prop="pwd">
  9         <el-input type="pwd" v-model="ruleForm.pwd" autocomplete="off"></el-input>
 10       </el-form-item>
 11       <el-form-item>
 12         <el-row>
 13           <el-col :span="24">
 14             <div class="grid-content bg-purple-dark"></div>
 15           </el-col>
 16           <el-button style=" 100%;" type="primary" @click='doSub'>提交</el-button>
 17         </el-row>
 18         <el-row>
 19           <el-col :span="12">
 20             <div class="grid-content bg-purple-dark"></div>
 21             <el-link type="success" @click='toReg'>用户注册</el-link>
 22           </el-col>
 23           <el-col :span="12">
 24             <div class="grid-content bg-purple-dark"></div>
 25             <el-link type="success">找回密码</el-link>
 26           </el-col>
 27         </el-row>
 28 
 29       </el-form-item>
 30     </el-form>
 31   </div>
 32 </template>
 33 <script>
 34   export default {
 35     data() {
 36       return {
 37         ruleForm: {
 38           uname: '',
 39           pwd: ''
 40         }
 41       };
 42     },
 43     methods:{
 44       doSub(){
 45       let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
 46       this.axios.post(url, this.ruleForm).then((response) => {
 47                           console.log(response);
 48                 if (response.data.code == 1) {
 49                   this.$message({
 50                             showClose: true,
 51                             message: response.data.msg,
 52                             type: 'success'
 53                           });
 54                 }else{
 55                    this.$message({
 56                             showClose: true,
 57                             message: response.data.msg,
 58                             type: 'error'
 59                           });
 60                 }
 61                       }).catch(function(error) {
 62                           console.log(error);
 63                       });
 64       },
 65       toReg(){
 66       this.$router.push({
 67         path:'/Reg'
 68       })
 69       }
 70     }
 71   }
 72 </script>
 73 <style scoped>
 74   .login-wrap {
 75     box-sizing: border-box;
 76      100%;
 77     height: 100%;
 78     padding-top: 10%;
 79     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">
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</svg>);
 80     /* background-color: #112346; */
 81     background-repeat: no-repeat;
 82     background-position: center right;
 83     background-size: 100%;
 84   }
 85   .login-container {
 86     border-radius: 10px;
 87     margin: 0px auto;
 88      350px;
 89     padding: 30px 35px 15px 35px;
 90     background: #fff;
 91     border: 1px solid #eaeaea;
 92     text-align: left;
 93     box-shadow: 0 0 20px 2px rgba(0, 0, 0, 0.1);
 94   }
 95   .title {
 96     margin: 0px auto 40px auto;
 97     text-align: center;
 98     color: #505458;
 99   }
100 </style>

 

原文地址:https://www.cnblogs.com/xcn123/p/11426922.html