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());
        }

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到此为止已经配置完成, 启动主启动类, 浏览器访问

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源代码参见附件: my-springboot-3.zip