经过之前的文章 spring-boot(一) web应用 发布后,有网友反馈说只返回对象,是如何达到让api返回json结果的,故在写一篇文章介绍下多种格式的响应输出配置.

本文介绍如何返回json和xml , 案例代码在 "spring-boot(二)数据库操作" 基础上改造

项目结构图:

1. pom增加xml的响应支持

   	<dependency>
   		<groupId>com.fasterxml.jackson.dataformat</groupId>
   		<artifactId>jackson-dataformat-xml</artifactId>
   	</dependency>
   

2. HelloBean类增加xml注解支持

   	package hello.model;
   
   	import java.util.Date;
   
   	import javax.xml.bind.annotation.XmlElement;
   	import javax.xml.bind.annotation.XmlRootElement;
   
   	/**
   	 * @author majinding888@foxmail.com
   	 * @date 2016-12-21 下午12:22:18
   	 */
   	@XmlRootElement
   	public class HelloBean {
   
   		private Integer id;
   		private String msg;
   		private Date date;
   
   		public HelloBean() {
   		}
   
   		public HelloBean(Integer id, String msg, Date date) {
   			super();
   			this.id = id;
   			this.msg = msg;
   			this.date = date;
   		}
   
   		@XmlElement
   		public Integer getId() {
   			return id;
   		}
   
   		public void setId(Integer id) {
   			this.id = id;
   		}
   
   		@XmlElement
   		public String getMsg() {
   			return msg;
   		}
   
   		public void setMsg(String msg) {
   			this.msg = msg;
   		}
   
   		@XmlElement
   		public Date getDate() {
   			return date;
   		}
   
   		public void setDate(Date date) {
   			this.date = date;
   		}
   
   	}
   
   

3. 在controller中配置xml和json的导航支持

   		@RequestMapping(value = "/hello/json", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
   		@ResponseBody
   		public Object helloBean() {
   			return new HelloBean(123,"你好",new Date());
   		}
   
   		@RequestMapping(value = "/hello/xml", method = RequestMethod.GET, produces = MediaType.APPLICATION_XML_VALUE)
   		@ResponseBody
   		public Object xml() {
   			return new HelloBean(123,"你好",new Date());
   		}
   

---

到此为止已经配置完成, 启动主启动类, 浏览器访问

---

源代码参见附件: my-springboot-3.zip