SpringBoot返回json和xml的示例代码

2019-11-26 10:05:33

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有些情况接口需要返回的是xml数据，在springboot中并不需要每次都转换一下数据格式，只需做一些微调整即可。

新建一个springboot项目，加入依赖jackson-dataformat-xml，pom文件代码如下：

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">  <modelVersion>4.0.0</modelVersion>  <groupId>com.dalaoyang</groupId>  <artifactId>springboot_xml</artifactId>  <version>0.0.1-SNAPSHOT</version>  <packaging>jar</packaging>  <name>springboot_xml</name>  <description>springboot_xml</description>  <parent>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-parent</artifactId>    <version>1.5.9.RELEASE</version>    <relativePath/> <!-- lookup parent from repository -->  </parent>  <properties>    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>    <java.version>1.8</java.version>  </properties>  <dependencies>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-web</artifactId>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-devtools</artifactId>      <scope>runtime</scope>    </dependency>    <dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-test</artifactId>      <scope>test</scope>    </dependency>    <dependency>      <groupId>com.fasterxml.jackson.dataformat</groupId>      <artifactId>jackson-dataformat-xml</artifactId>    </dependency>  </dependencies>  <build>    <plugins>      <plugin>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-maven-plugin</artifactId>      </plugin>    </plugins>  </build></project>

启动类默认即可，没有做任何调整。

新建一个user类，代码如下：

package com.dalaoyang.entity;import javax.xml.bind.annotation.XmlElement;import javax.xml.bind.annotation.XmlRootElement;/** * @author dalaoyang * @Description * @project springboot_learn * @package com.dalaoyang.entity * @email yangyang@dalaoyang.cn * @date 2018/4/8 */@XmlRootElementpublic class User {  String userName;  String userAge;  String userAddress;  public User(String userName, String userAge, String userAddress) {    this.userName = userName;    this.userAge = userAge;    this.userAddress = userAddress;  }  @XmlElement  public String getUserName() {    return userName;  }  public void setUserName(String userName) {    this.userName = userName;  }  @XmlElement  public String getUserAge() {    return userAge;  }  public void setUserAge(String userAge) {    this.userAge = userAge;  }  @XmlElement  public String getUserAddress() {    return userAddress;  }  public void setUserAddress(String userAddress) {    this.userAddress = userAddress;  }}

最后是controller，代码如下：

package com.dalaoyang.controller;import com.dalaoyang.entity.User;import org.springframework.http.MediaType;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;/** * @author dalaoyang * @Description * @project springboot_learn * @package com.dalaoyang.controller * @email yangyang@dalaoyang.cn * @date 2018/4/8 */@RestControllerpublic class UserController {  //http://localhost:8080/json  @GetMapping(value = "/json",produces = MediaType.APPLICATION_JSON_VALUE)  public User index(){    User user = new User("dalaoyang", "26", "北京");    return user;  }  //http://localhost:8080/xml  @GetMapping(value = "/xml",produces = MediaType.APPLICATION_XML_VALUE)  public User XML(){    User user = new User("dalaoyang", "26", "北京");    return user;  }}

到这里就可以启动项目了，访问http://localhost:8080/json,可以看到如下图