spring boot: 输出json

spring boot:  输出json

注意：关闭java的Terminate后，在重新启动，否则报错

app.java启动配置

package com.muyang.boot1;

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

@SpringBootApplication
public class App {

	
	public static void main(String[] args)
	{
		SpringApplication.run(App.class, args);
	}
	
}

　　

创建book.java类

package com.muyang.boot1;

public class Book {

	private int id;
	
	private String name;
	
	private String author;

	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 String getAuthor() {
		return author;
	}

	public void setAuthor(String author) {
		this.author = author;
	}
	
	
	
	
	
}

　　

控制器类HelloController.java

url映射

package com.muyang.boot1;

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

@RestController
@RequestMapping(value="/h3")
public class Hello3Controller {

	@RequestMapping(value="/hello")
	public String hello()
	{
		return "hello world";
	}
	
	@RequestMapping(value="/getBook", produces="application/json; charset=utf-8")
	public Book getBook()
	{
		Book book = new Book();
		book.setId(1);
		book.setName("中国近代史");
		book.setAuthor("李四");
		return book;
	}
	
}

　　

http://localhost:8080/h3/hello

结果：

"hello world"

　　

http://localhost:8080/h3/getBook

结果：

{
	"author":"李四",
	"id":1,
	"name":"中国近代史"
}

　　

pom.xml参考

<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.muyang</groupId>
  <artifactId>boot1</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>boot1</name>
  <url>http://maven.apache.org</url>
  
  
  <!-- Inherit defaults from Spring Boot -->
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
        <!--<version>2.0.1.RELEASE</version>-->
    </parent>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
  </properties>

  <dependencies>
  
  <dependency>
  	<groupId>org.springframework.boot</groupId>
  	<artifactId>spring-boot-starter-web</artifactId>
  	<!-- 
  		自动依赖parent里面的版本
  		<version></version>
  	 -->
  </dependency>
  
  <!--  dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency-->
  
  
    <!-- FastJson -->
    <dependency>
    	<groupId>com.alibaba</groupId>
    	<artifactId>fastjson</artifactId>
    	<version>1.2.15</version>
    </dependency>
  
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    
    
    
  </dependencies>
  
  
  <build>
  	<finalName>boot1</finalName>
  	<!-- 在这里添加springloader plugin 热部署-->
  	<plugins>
  		<plugin>
  			<groupId>org.springframework.boot</groupId>
  			<artifactId>spring-boot-maven-plugin</artifactId>
  			<dependencies>
  				<dependency>
  					<groupId>org.springframework</groupId>
  					<artifactId>springloaded</artifactId>
  					<version>1.2.4.RELEASE</version>
  				</dependency>
  			</dependencies>
  			<executions>
  				<execution>
  					<goals>
  					<goal>repackage</goal>  					
  					</goals>
  					<configuration>
  						<classifier>exec</classifier>
  					</configuration>
  				</execution>
  			</executions>
  			
  		</plugin>
  	</plugins>
  </build>
  
</project>