使用springboot实现jsonp|jsonp的实现|JSONP的实现使用springboot

1、服务端：

1.1、项目目录：

1.2、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 https://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0modelVersion>

    <parent>

        <groupId>org.springframework.bootgroupId>

        <artifactId>spring-boot-starter-parentartifactId>

        <version>2.7.5version>

        <relativePath/> 

    parent>

    <groupId>com.xdy.springboot4vuegroupId>

    <artifactId>springboot4vueartifactId>

    <version>0.0.1-SNAPSHOTversion>

    <name>springboot4vuename>

    <description>Demo project for Spring Bootdescription>

    <properties>

        <java.version>1.8java.version>

    properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework.bootgroupId>

            <artifactId>spring-boot-starter-webartifactId>

        dependency>



        <dependency>

            <groupId>org.springframework.bootgroupId>

            <artifactId>spring-boot-starter-testartifactId>

            <scope>testscope>

        dependency>

        <dependency>

            <groupId>net.minidevgroupId>

            <artifactId>json-smartartifactId>

            <version>2.3.1version>

            <scope>compilescope>

        dependency>

        <dependency>

            <groupId>com.alibabagroupId>

            <artifactId>fastjsonartifactId>

            <version>1.2.40version>

        dependency>

    dependencies>



    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.bootgroupId>

                <artifactId>spring-boot-maven-pluginartifactId>

            plugin>

        plugins>

    build>



project>

1.3、application.properties

server.port=3000

1.4、配置文件：WebConfig

指定请求地址：

package com.xdy.springboot4vue.config;



import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.web.servlet.config.annotation.CorsRegistry;

import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;



@Configuration

public class WebConfig {

    @Bean

    public WebMvcConfigurer corsConfigurer(){

        return new WebMvcConfigurer() {

            @Override

            public void addCorsMappings(CorsRegistry registry){

//                registry.addMapping("/**").allowedOrigins("http://localhost:80");

//                registry.addMapping("/**").allowedOrigins("http://localhost");

                registry.addMapping("/**").allowedOrigins("http://localhost:3000");

            }

        };

    }

}

1.5、控制器

package com.xdy.springboot4vue.controller;



import com.xdy.springboot4vue.entity.Car;

import net.minidev.json.JSONObject;

import org.springframework.web.bind.annotation.CrossOrigin;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.PostMapping;

import org.springframework.web.bind.annotation.RestController;



import java.util.ArrayList;

import java.util.Date;

import java.util.List;



@RestController

//@CrossOrigin

public class HelloWorldController {

    @GetMapping("/hello")

    public String SayHello(){

        return "HelloWorld";

    }

    @GetMapping("/cars")

    public List<Car> getCars(){

        List<Car> lst=new ArrayList<Car>();

        Car car=new Car(1,"奔驰", new Date());

        lst.add(car);

        car=new Car(2,"宝马", new Date());

        lst.add(car);

        return lst;

    }

    @PostMapping("/cars/post")

    public Car postCar(Integer id, String name){

        Car c=new Car(id,name,new Date());

        return c;

    }

//    @GetMapping("/getscript")

//    public String getScript(){

//        return "show()";

//    }

    @GetMapping("/getscript")

    public String getScript(String callback){

        JSONObject result = new JSONObject();

        result.put("msg","ok");

        result.put("mehtod","request");

        result.put("age",18);

        String resultStr=result.toJSONString();



//        String methodName= callback+"()";

        String methodName= callback+"("+resultStr+")";

        System.out.println(methodName);

//        return methodName+"()";

        return methodName;

    }

}

1.6、业务类

package com.xdy.springboot4vue.entity;

import java.util.Date;

public class Car {
    private int id;
    private String name;
    private Date ctime;

    public Car(int id, String name, Date ctime) {
        this.id = id;
        this.name = name;
        this.ctime = ctime;
    }

    public int getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

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

    public Date getCtime() {
        return ctime;
    }

    public void setCtime(Date ctime) {
        this.ctime = ctime;
    }
}

2、客户端

DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <meta http-equiv="X-UA-Compatible" content="IE=edge">

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <title>Documenttitle>

head>

<body>

    <script>

        // function show(){

        //     console.log('ok')

        // }

        // function showInfo123(){

        //     console.log('Info is ok')

        // }

        function showInfo123(data){

            console.log(data)

        }

    script>

    <script src="http://127.0.0.1:3000/getscript?callback=showInfo123">script>

body>

html>

3、效果图

http://localhost/06.%E5%AE%A2%E6%88%B7%E7%AB%AFJSONP%E9%A1%B5%E9%9D%A2.html