SpringBoot入門——返回JSON數據

SpringBoot入門——返回JSON數據

新手看看，大牛醬油~

一、Maven設置pom引入JAR包

<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.aspirecn.exer</groupId>
	<artifactId>webfw</artifactId>
	<version>1.0.0</version>
    <!-- springboot通常引用jar就行 -->
	<packaging>jar</packaging>

    <!-- 設置父引用 -->
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.4.1.RELEASE</version>
	</parent>

	<!-- 配置須要的各個jar包版本、JAVA版本信息 -->
	<properties>
		<java.version>1.8</java.version>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>

	<!-- 所須要的依賴包 -->
	<dependencies>
		<!-- web SpringMvc、AOP等依賴的包 -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
	</dependencies>

</project>

二、建立實體類Demo

package com.springboot.entity

public class Demo {
    private int id;          //建立id
    private String name;     //建立名字
    //Springboot默認調用了jackson包,能夠用此註解格式化日期格式
    @JsonFormat(timezone = "GMT+8", pattern = "yyyy-MM-dd HH:mm:ss")
    private Date createTime; //建立時間
    private String remarks;  //備註信息

    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 getCreateTime() {
		return createTime;
	}
	public void setCreateTime(Date createTime) {
		this.createTime = createTime;
	}
	public String getRemarks() {
		return remarks;
	}
	public void setRemarks(String remarks) {
		this.remarks = remarks;
	}
}

三、建立Controller

package com.springboot.controller;

import java.util.Date;

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

//@RestController = @ResponseBody ＋ @Controller組合
@RestController
public class HelloController {
	
    //若是發生亂碼,能夠改爲
    //@RequestMapping(path="/getDemo",produces = "application/json;charset=UTF-8"   )
    @RequestMapping("/getDemo")
	public Demo getDemo(){
		Demo demo=new Demo();
		demo.setId(1);
		demo.setName("李四");
		demo.setCreateTime(new Date());
		demo.setRemarks("這是備註信息");
		return demo;
	}
}

四、Springboot啓動類

package com.springboot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

//加此註解說明此爲Springboot啓動類
@SpringBootApplication
public class Application {
	public static void main(String[] args) {
		SpringApplication.run(Appication.class, args);
		System.out.println("_____啓動完成______");
	}
}

直接啓動Application運行

輸入：

http://localhost:8080/getDemo

運行結果：