java对象转xml报文

Java对象转XML报文可以使用Java内置的JAXB库来实现。首先定义一个Java类，使用注解标注类和属性的映射关系，然后使用JAXB提供的Marshaller类将Java对象转换为XML格式的报文。下面是一个示例代码：

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import java.io.StringWriter;

public class Main {
    public static void main(String[] args) throws JAXBException {
        // 创建Java对象
        Person person = new Person();
        person.setName("张三");
        person.setAge(18);

        // 使用JAXB将Java对象转换为XML格式的报文
        JAXBContext jaxbContext = JAXBContext.newInstance(Person.class);
        Marshaller marshaller = jaxbContext.createMarshaller();
        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
        StringWriter writer = new StringWriter();
        marshaller.marshal(person, writer);
        System.out.println(writer.toString());
    }
}

import javax.xml.bind.annotation.XmlRootElement;

@XmlRootElement
public class Person {
    private String name;
    private int age;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }
}

输出结果为：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<person>
    <age>18</age>
    <name>张三</name>
</person>