As a way of web development, the separation of front and back ends is now more and more widely used. The front-end is generally more popular with Vue.js framework, and there are many back-end frameworks. There are many Vue+SpringMVC front-end and back-end separated demos on the Internet, but the Vue+JFinal framework does not seem to be found. This article is based on the Vue.js and JFinal frameworks. A simple example of front-end and back-end separation projects.
The first step: maven builds the back-end JFinal part
1. Create a new web project with maven, the project name is vue-jfinal
2. Add dependencies such as JFinal framework and jetty container
<dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>4.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>com.jfinal</groupId> <artifactId>jfinal</artifactId> <version>3.3</version> </dependency> <dependency> <groupId>com.jfinal</groupId> <artifactId>jetty-server</artifactId> <version>8.1.8</version> <scope>provided</scope> </dependency>
3. Modify web.xml
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app> <display-name>Archetype Created Web Application</display-name> <filter> <filter-name>jfinal</filter-name> <filter-class>com.jfinal.core.JFinalFilter</filter-class> <init-param> <param-name>configClass</param-name> <param-value>common.demoConfig</param-value> </init-param> </filter> <filter-mapping> <filter-name>jfinal</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
4. Add demoController.java to the Package of the new controller in src/main/java
package controller; import com.jfinal.core.Controller; public class demoController extends Controller { public void index() { //跨域请求设置 getResponse().addHeader("Access-Control-Allow-Origin", "*"); renderJson("{\"age\":25,\"name\":\"huiliuyi\"}"); } }
5. Create a new common Package in src/main/java and add demoConfig.java
package common; import com.jfinal.config.Constants; import com.jfinal.config.Handlers; import com.jfinal.config.Interceptors; import com.jfinal.config.JFinalConfig; import com.jfinal.config.Plugins; import com.jfinal.config.Routes; import com.jfinal.core.JFinal; import com.jfinal.template.Engine; import controller.demoController; public class demoConfig extends JFinalConfig { @Override public void configConstant(Constants arg0) { arg0.setDevMode(true); } @Override public void configEngine(Engine arg0) { // TODO Auto-generated method stub } @Override public void configHandler(Handlers arg0) { // TODO Auto-generated method stub } @Override public void configInterceptor(Interceptors arg0) { // TODO Auto-generated method stub } @Override public void configPlugin(Plugins arg0) { // TODO Auto-generated method stub } @Override public void configRoute(Routes arg0) { arg0.add("/demo", demoController.class); } public static void main(String[] args) { JFinal.start("src/main/webapp", 8081, "/", 5); } }
6. Run the demoConfig.java file, run as Java Applicaiton, as shown in the figure below, the backend is completed
In Eclipse Version: Oxygen.1 Release (4.7.1) the project directory is as follows:
Step 2: Use vue-cli to build the vue.js front-end part
1. Install vue-cli
npm install --global vue-cli
2. Create a project based on the webpack template
vue init webpack vue-jfinal
Next, there will be some yes/no options, set as shown below
3. Enter the project directory and install the vue-resource plugin
cd vue- jfinal
npm install vue-resource
4. Use webstorm to open vue-jfinal, the project directory is as shown below, and set the Run/Debug Configuration
4. Add a reference to vue-resource in main.js
Original file
// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
Vue.config.productionTip = false
/* eslint-disable no-new */
new Vue({
el: '#app',
router,
components: { App },
template: '<App/>'
})
After adding:
// The Vue build version to load with the `import` command // (runtime-only or standalone) has been set in webpack.base.conf with an alias. import Vue from 'vue' import App from './App' import router from './router' import VueResource from 'vue-resource' Vue.use(VueResource) Vue.config.productionTip = false /* eslint-disable no-new */ new Vue({ el: '#app' , router, components: { App }, template: '<App/>' })
5. Modify the App.vue file in the vue-jfinal project
Original file
<template>
<div id="app">
<img src="./assets/logo.png">
<router-view/>
</div>
</template>
<script>
export default {
name: 'App'
}
</script>
<style>
#app {
font-family: 'Avenir', Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
text-align: center;
color: #2c3e50;
margin-top: 60px;
}
</style>
After modification:
<template>
<div id="app">
<img src="./assets/logo.png">
<h1>The server data is: {{serverData}}</h1>
<button v-on:click="getdata()">Get server-side data</button>
<router-view/>
</div>
</template>
<script>
export default {
name: 'App',
data(){
return {
serverData: "page data"
}
},
methods:{
getdata(){
this.$http.get('http://localhost:8081/demo').then(function(response){
this.serverData=response.data
})
}
}
}
</script>
<style>
#app {
font-family: 'Avenir', Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
text-align: center;
color: #2c3e50;
margin-top: 60px;
}
</style>
Step 3: Test front-end and back-end separation
1. Click the run button in webstorm, enter http://localhost:8080 in the browser to access, the following interface appears, the front end is successfully built
2. Click the Get back-end data button, and the following figure appears, indicating that the back-end data is obtained successfully
Step 4: Put the jfinal project and the vue project in the same project directory, screenshot of the directory
git connection: https://github.com/Feynman61/vue-jfinal.git
Summarize:
The development mode of front-end and back-end separation is very common now, and the advantages are very clear. It separates the work of front-end and back-end developers, so that front-end and back-end developers can focus on their own work and improve development efficiency.
If you have any questions in the actual operation, please leave a comment and I will reply to you as soon as possible.