catalogue
1, SPA project login registration layout
3, Pointer variable pollution of This
5, The difference between get/post of Axious
1, SPA project login registration layout
Clear effect: login registration interface effect:
1. During project layout, first install the required configurations and import all dependencies. Write the following four lines of statements line by line in the cmd of the project
npm install element-ui -S
npm install axios -S
npm install qs -S
npm install vue-axios -S
2. After completing the above operations, you can use the element UI for layout. Add the following statement to src/main.js
import ElementUI from 'element-ui' // New addition one
import 'element-ui/lib/theme-chalk/index.css' // New addition two ， Avoid late packaging styles
3. In order to check whether your configuration is successful, install the components in Element to verify that if it works, the installation configuration is successful.
Helloword.Vue:
<template>
<div class="hello">
<h1>{{ msg }}</h1>
<h2>Essential Links</h2>
<ul>
<li>
<a
href="https://vuejs.org"
target="_blank"
>
Core Docs
</a>
</li>
<li>
<a
href="https://forum.vuejs.org"
target="_blank"
>
Forum
</a>
</li>
<li>
<a
href="https://chat.vuejs.org"
target="_blank"
>
Community Chat
</a>
</li>
<li>
<a
href="https://twitter.com/vuejs"
target="_blank"
>
Twitter
</a>
</li>
<br>
<li>
<a
href="http://vuejs-templates.github.io/webpack/"
target="_blank"
>
Docs for This Template
</a>
</li>
</ul>
<h2>Ecosystem</h2>
<ul>
<li>
<a
href="http://router.vuejs.org/"
target="_blank"
>
vue-router
</a>
</li>
<li>
<a
href="http://vuex.vuejs.org/"
target="_blank"
>
vuex
</a>
</li>
<li>
<a
href="http://vue-loader.vuejs.org/"
target="_blank"
>
vue-loader
</a>
</li>
<li>
<a
href="https://github.com/vuejs/awesome-vue"
target="_blank"
>
awesome-vue
</a>
</li>
</ul>
</div>
</template>
<script>
export default {
name: 'HelloWorld',
data () {
return {
msg: 'Welcome to Your Vue.js App'
}
}
}
</script>
<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
h1, h2 {
font-weight: normal;
}
ul {
list-style-type: none;
padding: 0;
}
li {
display: inline-block;
margin: 0 10px;
}
a {
color: #42b983;
}
</style>
The button effect indicates that the Element configuration is successfully installed.
4. Create a Vue with internal components, named Login.vue. Find the form code in Element, write it to Login.vue, and provide the components.
Login.Vue:
<template>
<div id="app" class="login-wrap">
<h3 style="text-align: center;">User login</h3>
<el-form :model="ruleForm" status-icon ref="ruleForm" class="demo-ruleForm login-container">
<el-form-item label="account number" prop="uname">
<el-input type="text" v-model="ruleForm.uname" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="password" prop="pwd">
<el-input type="password" v-model="ruleForm.pwd" autocomplete="off"></el-input>
</el-form-item>
<el-form-item>
<el-row>
<el-col :span="24">
<div class="grid-content bg-purple-dark">
<el-button style="width: 100%;" type="primary" @click="submitForm('ruleForm')">Submit</el-button>
</div>
</el-col>
</el-row>
<el-row>
<el-col :span="12">
<div class="grid-content bg-purple-dark">
<el-link type="success" @click="toReg">Registered user</el-link>
</div>
</el-col>
<el-col :span="12">
<div class="grid-content bg-purple-dark">
<el-link type="warning">Forget password</el-link>
</div>
</el-col>
</el-row>
</el-form-item>
</el-form>
</div>
</template>
<script>
export default {
name: 'Login',
data() {
return {
ruleForm: {}
}
},
methods: {
toReg() {
this.$router.push({ //Jump from one interface to another
path: '/Reg'
});
},
submitForm() {
let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
this.axios.post(url, this.ruleForm).then((resp) => { //Code for front-end and back-end interaction
console.log(resp);
if (resp.data.code == 1) {
this.$message({
message: resp.data.msg,
type: 'success'
});
} else {
this.$message({
message: resp.data.msg,
type: 'warning'
});
}
}).catch(function(error) {
console.log(error);
});
}
}
}
</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>
Note: in Login.Vue as like as two peas in the database, you should notice that the uname of prop should be exactly the same as the name in the database.
< El form item label = "account" prop = "uname" >
<el-input type="text" v-model="ruleForm.uname" autocomplete="off"></el-input>
</el-form-item>
< El form item label = "password" prop = "PWD" >
<el-input type="password" v-model="ruleForm.pwd" autocomplete="off"></el-input>
</el-form-item>
Operation effect:
5. When I click register user, I want to jump to the user registration interface. Create a Reg.vue component and copy the Login content. Change the component name.
The registered user in Login.Vue writes a click event and a method to jump to the Login interface in script:
<script>
export default {
name: 'Login',
data() {
return {
ruleForm: {}
}
},
methods: {
toReg() {
this.$router.push({ //Jump from one interface to another
path: '/Reg'
});
},
</script> this.$router.push({/ / jump from one interface to another
path: '/Reg'
})
The same is true for jumping to the Login.vue component in reg.vue.
2, SPA project login function
Premise: import the maven project into eclipse, change the version of mysql in pom.xml, and connect to the contents in the database db.properties file.
db.properties:
1. To realize the login function, it is necessary to realize the front and rear data interaction.
Requirements: when you click Submit, you need to interact the data from the front end to the back end, and then access the database from the back end to check whether the user name and password are correct.
Meet the requirements: in the submission method of Login.Vue, first realize the data interaction between the front and back ends, then obtain the path to access the corresponding action, and then judge that if the returned data is 1, the user's login is successful, and if the returned data is 2, the login fails.
Login.Vue:
submitForm() {
let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
This. Axios. Post (URL, this. Ruleform). Then ((RESP) = > {/ / code for front-end and back-end interaction
console.log(resp);
if (resp.data.code == 1) {
this.$message({
message: resp.data.msg,
type: 'success'
});
} else {
this.$message({
message: resp.data.msg,
type: 'warning'
});
}
}).catch(function(error) {
console.log(error);
});
How to write the url: you need to view it from action.js and http.js
let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
http.js
action.js:
2. Login action in eclipse:
package com.zking.vue.web;
import java.util.HashMap;
import java.util.Map;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.opensymphony.xwork2.ModelDriven;
import com.zking.base.web.BaseAction;
import com.zking.vue.biz.UserBiz;
import com.zking.vue.entity.User;
import com.zking.vue.util.JsonData;
import com.zking.vue.util.JwtUtils;
import com.zking.vue.util.PageBean;
import com.zking.vue.util.ResponseUtil;
import com.zking.vue.util.StringUtils;
public class UserAction extends BaseAction implements ModelDriven<User>{
private UserBiz userBiz;
private User user = new User();
public UserBiz getUserBiz() {
return userBiz;
}
public void setUserBiz(UserBiz userBiz) {
this.userBiz = userBiz;
}
public String login() {
ObjectMapper om = new ObjectMapper();
JsonData jsonData = null;
try {
if(StringUtils.isBlank(user.getUname()) || StringUtils.isBlank(user.getPwd())) {
jsonData = new JsonData(0, "User or password is empty", user);
}else {
User u = this.userBiz.login(user);
// Map<String, Object> claims = new HashMap<String, Object>();
// claims.put("uname",user.getUname());
// claims.put("pwd", user.getPwd());
// String jwt = JwtUtils.createJwt(claims, JwtUtils.JWT_WEB_TTL);
// response.setHeader(JwtUtils.JWT_HEADER_KEY, jwt);
jsonData = new JsonData(1, "Login succeeded", u);
}
} catch (Exception e) {
e.printStackTrace();
jsonData = new JsonData(0, "User or password error", user);
}finally {
try {
ResponseUtil.write(response, om.writeValueAsString(jsonData));
} catch (Exception e) {
e.printStackTrace();
}
}
return null;
}
public String getAsyncData() {
ObjectMapper om = new ObjectMapper();
try {
Thread.sleep(6000);
ResponseUtil.write(response, om.writeValueAsString("http://www.javaxl.com"));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
@Override
public User getModel() {
return user;
}
}
3, Data in database:
4, Login function effect display:
3, Pointer variable pollution of This
1. Why is This pointer variable polluted?
When a this is used in html, the value of this will not change, even if this is used later, because this scope is not available in axios.
2. Scenario reproduction:
code:
<script>
submitForm() {
let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
this.axios.post(url, this.ruleForm).then(function(resp) { //Code for front-end and back-end interaction
console.log(resp);
if (resp.data.code == 1) {
this.$message({
message: resp.data.msg,
type: 'success'
});
} else {
this.$message({
message: resp.data.msg,
type: 'warning'
});
}
}).catch(function(error) {
console.log(error);
});
</script>effect:
3. Solution:
1. Define a variable outside and put the this pointer into the
2. Use arrow function
1. Define a variable outside and put the this pointer into the
<script>
submitForm() {
let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
let obj=this;
this.axios.post(url, this.ruleForm).then((resp) => { //Code for front-end and back-end interaction
console.log(resp);
if (resp.data.code == 1) {
obj.$message({
message: resp.data.msg,
type: 'success'
});
} else {
this.$message({
message: resp.data.msg,
type: 'warning'
});
}
}).catch(function(error) {
console.log(error);
});
</script>2. Use arrow function
4, Ajax cross domain issues
1. There are four situations where ajax cross domain problems occur:
2. Solution:
In eclipse, there is a cors.filter file: any domain name can be placed in it. Four methods have been added, deleted, modified and checked
5, The difference between get/post of Axious
1. Explain the difference between get/post of Axious and the function of http.js:
Generally, there are two forms of data transfer to eclipse, the first is in the form of array and the other is in the form of string. However, the value accepted in eclipse is string.
No matter which dependency is used in src/main.js, it can be used
import axios from '@/api/http' //# Global configuration of Axios by vue project
// import axios from 'axios' //# Global configuration of Axios by vue project
You can use any value transfer method in Login.vue
// let url = this.axios.urls.SYSTEM_USER_DOLOGIN;
let url = 'http://localhost:8080/T216_SSH/vue/userAction_login.action';
character string:
Object:
However, when receiving the object, the value in eclipse is null, so the login will fail,
2. Solution:
2.1 the code for converting objects into strings has been written in http.js for a long time:
http.js:
//Organize data
// Only applicable to POST,PUT,PATCH, transformRequest ` allows you to modify the request data before sending it to the server
axios.defaults.transformRequest = function(data) {
data = qs.stringify(data);
return data;
};2.2 use qs's stringify() method in Login.vue to convert objects into strings:
The above two solutions are OK!
Today's knowledge is shared here. I hope it can help you!