1 如果是使用jdk9以上的，pom文件需要引入依赖

<dependency>
	<groupId>javax.xml.bind</groupId>
	<artifactId>jaxb-api</artifactId>
</dependency>
<dependency>
	<groupId>com.sun.xml.bind</groupId>
	<artifactId>jaxb-impl</artifactId>
</dependency>
<dependency>
	<groupId>com.sun.xml.bind</groupId>
	<artifactId>jaxb-core</artifactId>
</dependency>
<dependency>
	<groupId>javax.activation</groupId>
	<artifactId>activation</artifactId>
</dependency>

2 将xml字符串转成对象

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Unmarshaller;
import java.io.StringReader;
import javax.xml.bind.JAXBException;

/**
* 将String类型的xml转换成对象
*/
private static <T> T convertXmlStrToObject(String xmlStr, Class<T> clazz) {
    T message = null;
    try {
        JAXBContext jaxbContext = JAXBContext.newInstance(clazz);
        Unmarshaller unmarshaller = jaxbContext.createUnmarshaller();
        StringReader reader = new StringReader(xmlStr);
        message = (T) unmarshaller.unmarshal(reader);
    } catch (JAXBException e) {
        e.printStackTrace();
    }
    return message;
}

3 调用该方法

Recharge recharge = convertXmlStrToObject(resXml, Recharge.class);

4 Recharge类文件的定义

@Getter
@Setter
@JsonIgnoreProperties(ignoreUnknown = true)
@XmlRootElement(name="root")
// 该注解的属性name的值, 对应xml字符串的第一个字段名，详解看底下
public class Recharge {
    // 以下字段要和xml字符串的字段一样，否则不能接受到字段值
    private String oid_goodsorder;
    private String jno_cli;
    private String name_goods;
    private String retcode;
    private String retmsg;
    private String leftmoney;
}

5 @XmlRootElement的详解