使用Vue+JFinal框架搭建前后端分离系统

Posted 2020-11-01 别闹了费曼sir

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前后端分离作为Web开发的一种方式，现在应用越来越广泛。前端一般比较流行Vue.js框架，后端框架比较多，网上有很多Vue+SpringMVC前后端分离的demo，但是Vue+JFinal框架貌似没有搜到，本文基于Vue.js和JFinal框架，给出了搭建了一个前后端分离项目的简单例子。

第一步：maven搭建后端JFinal部分

1、用maven新建web项目，项目名vue-jfinal

2、添加JFinal框架和jetty容器等依赖

        <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、修改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、在src/main/java中新建controller的Package添加demoController.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、在src/main/java中新建common的Package添加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、运行demoConfig.java文件，run as Java Applicaiton，如下图，则后端搭建完毕

在Eclipse Version: Oxygen.1 Release (4.7.1)中项目目录如下：

第二步：使用vue-cli搭建vue.js前端部分

1、安装vue-cli

npm install --global vue-cli

2、创建一个基于webpack模板的项目

vue init webpack vue-jfinal

接下来会有一些yes/no的选项，按下图设置

3、进入项目目录，安装vue-resource插件

cd vue-jfinal
npm install vue-resource

4、使用webstorm打开vue-jfinal，项目目录如下图，并设置Run/Debug Configuration

4、在main.js中添加vue-resource的引用

原文件

// 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/>\'
})

添加后：

// 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、修改vue-jfinal项目中App.vue文件

原文件

<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>

修改后：

<template>
  <div id="app">
    <img src="./assets/logo.png">
    <h1>服务端数据为：{{serverData}}</h1>
    <button v-on:click="getdata()">获得服务器端数据</button>
    <router-view/>
  </div>
</template>

<script>
export default {
  name: \'App\',
  data(){
    return {
      serverData:"页面数据"
    }
  },
  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>