SpringBoot 返回XML

前言

springboot返回的数据默认为json，但是有时间我们想返回xml的时候，就需要做少许修改。

1、pom.xml文件

引入web和xml依赖。

<?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>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.7.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <groupId>com.huzh</groupId>
    <artifactId>springboot-xml</artifactId>
    <version>1.0-SNAPSHOT</version>

    <name>springboot-xml</name>
    <description>springboot-xml</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <!--web-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

2、实体类

• @XmlRootElement的作用
  便于对象与xml文件之间的转换
• @XmlRootElement的使用
  在java bean上打一个标签@XmlRootElement，也可以使用@XmlRootElement(name = "user") 。

@XmlRootElement
public 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;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getUserAge() {
        return userAge;
    }

    public void setUserAge(String userAge) {
        this.userAge = userAge;
    }

    public String getUserAddress() {
        return userAddress;
    }

    public void setUserAddress(String userAddress) {
        this.userAddress = userAddress;
    }
}

3、controller类

启动类默认即可，没有做任何调整。修改@GetMapping属性produces即可。

@RestController
public class UserController {

    @GetMapping(value = "/json", produces = MediaType.APPLICATION_JSON_VALUE)
    public User index() {
        User user = new User("xiaoming", "18", "beijing");
        return user;
    }

    @GetMapping(value = "/xml", produces = MediaType.APPLICATION_XML_VALUE)
    public User XML(){
        User user = new User("xiaoming", "18", "beijing");
        return user;
    }
}

4、测试

• 访问http://localhost:8080/json
  json.png
• 访问http://localhost:8080/xml
  xml.png