Spring和Ajax

时间：2019-04-11 10:39:29 阅读：182 评论：0 收藏：0 [点我收藏+]

标签：文件 mod 转化成功 jquery func 后台 parent control

Maven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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.wuyilong</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <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-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

控制层：

package com.demo.controller;

import com.demo.entity.User;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;

/**
 * @Auther: wuyilong
 * @Date: 2019/4/11 09:20
 * @Description:
 */
@Controller
@RequestMapping("/test")
public class TestController {

    @GetMapping(value = "/index")
    public String index() {
        return "index";
    }

    @RequestMapping(value = "/ajax", method = RequestMethod.POST)
    @ResponseBody
    //@RequestBody是作用于参数的，它实现了把客户端传过来的json数据解析为对象，作为参数传进来，不过客户端传过来的数据类型必须是application/json,不然会出错
    private User ajax(@RequestBody User user) {
        System.out.println("收到ajax请求");
        System.out.println(user.getName());

        User u = new User();
        u.setId("1");
        u.setName("user");
        u.setPassword("1234");

        return u;
    }


}

User类

package com.demo.entity;

/**
 * @Auther: wuyilong
 * @Date: 2019/4/11 09:19
 * @Description:
 */
public class User {
    private String id;
    private String name;
    private String password;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }
}

前端页面：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script>
    <script>
        function myfun() {

            alert("message");

            $.ajax({
                type:"post",
                url:"/test/ajax",
                contentType:"application/json;charset=utf-8",
                data:‘{"id":"1","name":"asd","password":"abc"}‘,
                dataType:"json", // 这里声明收到的服务器的响应数据类型，如果是json的话，不声明也可以正常使用
                success:function (data) {
                    //响应成功后回调函数
                    alert("收到响应");
                    $("#r").html(JSON.stringify(data)); //这里将json转为字符串显示(data其实是个object,不转换的话会显示为一片空白)
                },
                error:function () {
                    alert("error");
                }

            });
        }

    </script>

</head>
<body>


<button id="btn" type="button" onclick="myfun()">Click Me!</button>
<p id="r"></p>

</body>
</html>

前端页面测试2

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script>
    <script>
        function myfun() {

            alert("message");


            var param = {}
            param.id = $("#id").val();
            param.name = $("#name").val();
            param.password = $("#password").val();

            $.ajax({
                type:"post",
                url:"/test/ajax",
                contentType:"application/json;charset=utf-8",
                data: JSON.stringify(param), // JSON.stringify() 将JS对象转化为JSON格式
                dataType:"json", // 这里声明收到的服务器的响应数据类型，如果是json的话，不声明也可以正常使用
                success:function (data) {
                    //响应成功后回调函数
                    alert("收到响应");
                    $("#r").html(JSON.stringify(data)); //这里将json转为字符串显示(data其实是个object,不转换的话会显示为一片空白)
                },
                error:function () {
                    alert("error");
                }

            });
        }

    </script>

</head>
<body>

<p>id: <input type="text" name="id" /></p>
<p>name: <input type="text" name="name" /></p>
<p>password: <input type="text" name="password" /></p>


<button id="btn" type="button" onclick="myfun()">Click Me!</button>
<p id="r"></p>

</body>
</html>

测试2运行：

技术图片