springboot-vue-前后端数据交互

前端项目:

pom文件:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion> <groupId>com.tangzhe</groupId>
<artifactId>springboot-vue-client</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>springboot-vue-client</name>
<description>this is my springboot vue client</description> <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
</parent> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties> <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
</dependencies> <build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

配置文件:


server:
port: 8888 spring:
application:
name: springboot-vue-client
profiles:
active: dev
  freemarker:
suffix: .html

controller:

@Controller
public class IndexController { @GetMapping("/test")
public String test() {
return "test";
} @GetMapping("/")
public String index() {
return "index";
} }

index.html:

<!DOCTYPE html>
<html lang="en" xmlns:v-bind="http://www.w3.org/1999/xhtml">
<head>
<meta charset="UTF-8">
<title>index</title>
<link href="https://cdn.bootcss.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet">
<!-- 生产环境版本,优化了尺寸和速度 -->
<script src="https://cdn.jsdelivr.net/npm/vue"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>
<body> <div id="app" class="table table-striped">
<table>
<tr>
<td>ID</td>
<td>用户名</td>
<td>密码</td>
<td>操作</td>
</tr>
<tr v-for="user in users">
<td>{{user.id}}</td>
<td>{{user.username}}</td>
<td>{{user.password}}</td>
<td><a href="#">删除</a></td>
</tr>
</table>
</div> <script type="text/javascript">
var app = new Vue({
el: '#app',
data: {
users: [
{"id":1, "username":"tangzhe", "password":"123456"},
{"id":2, "username":"张三", "password":"666666"}
]
},
methods: {
// 发送ajax请求,获取用户列表
loadData: function() {
var that = this;
axios.get('http://localhost:8889/user/list')
.then(function (response) {
var data = response.data;
that.users = data;
})
.catch(function (error) {
console.log(error);
});
}
},
mounted: function() {
// 页面加载执行方法
this.loadData();
}
});
</script>
</body>
</html>

后端项目:

pom.xml:

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion> <groupId>com.tangzhe</groupId>
<artifactId>springboot-vue-server</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>springboot-vue-server</name>
<description>this is my springboot vue server</description> <parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.10.RELEASE</version>
</parent> <properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties> <dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency> <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency> <dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency> <dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.47</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.10</version>
</dependency> <dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency> <dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.16.12</version>
</dependency>
</dependencies> <build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

配置文件:

server:
port: 8889 spring:
application:
name: springboot-vue-server
profiles:
active: dev datasource:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: com.mysql.jdbc.Driver
filters: stat
maxActive: 20
initialSize: 1
maxWait: 60000
minIdle: 1
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: select 'x'
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
poolPreparedStatements: true
maxOpenPreparedStatements: 20 spring:
datasource:
name: test
url: jdbc:mysql://localhost:3306/test
username: root
password: 123456
jpa:
show-sql: true

controller:

  @GetMapping("/list")
public List<User> list() {
return userService.findAll();
}

启动前端和后端项目:

localhost:8888

localhost:8889

请求页面:

springboot-vue-前后端数据交互

发现出现了跨域请求问题:

显示的是页面的静态数据,并没有显示后端接口返回的数据

springboot-vue-前后端数据交互

在后端项目中添加下面这个类解决跨域请求问题:

package com.tangzhe.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter; @Configuration
public class CorsConfig extends WebMvcConfigurerAdapter { @Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedOrigins("*")
.allowedHeaders("*")
.allowCredentials(true)
.allowedMethods("*")
.maxAge(3600);
} }

继续访问前端项目,跨域请求成功:

springboot-vue-前后端数据交互

前端

测试添加用户:

    <!-- 添加用户 -->
<p>姓名:<input v-model="name" /></p>
<p>密码:<input v-model="pass" /></p>
<p>年龄:<input v-model="age" /></p>
<p>手机:<input v-model="mobile" /></p>
<button @click="save">提交</button> ...
save: function() {
axios.post('http://localhost:8889/user/save', {
name: this.name,
pass: this.pass,
age: this.age,
mobile: this.mobile
})
.then(function (response) {
alert(response.data);
})
.catch(function (error) {
console.log(error);
});
}

springboot-vue-前后端数据交互

后端

@PostMapping("/save")
public String save(@RequestBody LoginInfo loginInfo) {
System.out.println(loginInfo);
return "success";
}
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