引入依赖

<dependency>
    <groupId>com.fasterxml.jackson.dataformat</groupId>
    <artifactId>jackson-dataformat-xml</artifactId>
    <version>2.13.1</version>
</dependency>

数据模型类

package vo;

import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlElementWrapper;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
import lombok.Data;

import java.util.List;

@Data
@JacksonXmlRootElement(localName = "res")
public class ResponseData {
    /**
     * 响应码：200表示成功
     */
    @JacksonXmlProperty()
    private String resultCode;

    /**
     * 响应描述
     */
    @JacksonXmlProperty()
    private String resultDesc;

    /**
     * 支付记录列表
     */
    @JacksonXmlElementWrapper(localName = "payList")
    @JacksonXmlProperty()
    private List<PaymentRecord> paymentList;
}

package vo;

import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
import lombok.Data;

/**
 * 支付记录详情
 */
@Data
@JacksonXmlRootElement()
public class PaymentRecord {
    /**
     * 诊疗流水号
     */
    @JacksonXmlProperty()
    private String clinicSequence;

    /**
     * 医院编号
     */
    @JacksonXmlProperty()
    private String hospitalCode;

    /**
     * 科室编号
     */
    @JacksonXmlProperty()
    private String departmentCode;
}

转换工具类

package util;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import com.fasterxml.jackson.dataformat.xml.ser.ToXmlGenerator;

/**
 * XML与Java对象转换工具
 *
 * @author DaenMax
 * 2022-4-20 11:11:15
 */
public class XmlConverter {
    /**
     * XML字符串转Java对象
     *
     * @param xmlStr XML字符串
     * @param clazz 对象类型
     * @param <T> 泛型参数
     * @return 转换后的对象
     */
    public static <T> T xmlToObject(String xmlStr, Class<T> clazz) {
        if (xmlStr != null && !xmlStr.isEmpty()) {
            try {
                return new XmlMapper().readValue(xmlStr, clazz);
            } catch (JsonProcessingException e) {
                e.printStackTrace();
            }
        }
        return null;
    }

    /**
     * Java对象转XML字符串
     *
     * @param obj 待转换的对象
     * @return XML字符串
     */
    public static String objectToXml(Object obj) {
        if (obj != null) {
            try {
                XmlMapper mapper = new XmlMapper();
                // 添加XML声明信息
                mapper.enable(ToXmlGenerator.Feature.WRITE_XML_DECLARATION);
                // 忽略空值字段
                mapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
                return mapper.writeValueAsString(obj);
            } catch (JsonProcessingException e) {
                e.printStackTrace();
            }
        }
        return null;
    }
}

示例演示

import util.XmlConverter;
import vo.ResponseData;
import vo.PaymentRecord;

import java.util.ArrayList;
import java.util.List;

public class TestConversion {
    public static void main(String[] args) {
        generateXml();
        parseXml();
    }

    /**
     * 构造XML
     */
    public static void generateXml() {
        ResponseData response = new ResponseData();
        response.setResultCode("200");
        response.setResultDesc("操作成功");
        List<PaymentRecord> records = new ArrayList<>();

        PaymentRecord record1 = new PaymentRecord();
        record1.setClinicSequence("123456");
        record1.setHospitalCode("阿萨德");
        record1.setDepartmentCode("fff");
        records.add(record1);

        PaymentRecord record2 = new PaymentRecord();
        record2.setClinicSequence("98465");
        record2.setHospitalCode("设定图");
        record2.setDepartmentCode("bbb");
        records.add(record2);

        PaymentRecord record3 = new PaymentRecord();
        record3.setClinicSequence("4567854");
        record3.setHospitalCode("换接口");
        record3.setDepartmentCode("jjj");
        records.add(record3);
        
        response.setPaymentList(records);
        String xml = XmlConverter.objectToXml(response);
        System.out.println(xml);
    }

    /**
     * 解析XML
     */
    public static void parseXml() {
        String xml = "<?xml version='1.0' encoding='UTF-8'?><res><resultCode>200</resultCode><resultDesc>操作成功</resultDesc><payList><paymentRecord><clinicSequence>123456</clinicSequence><hospitalCode>阿萨德</hospitalCode><departmentCode>fff</departmentCode></paymentRecord><paymentRecord><clinicSequence>98465</clinicSequence><hospitalCode>设定图</hospitalCode><departmentCode>bbb</departmentCode></paymentRecord><paymentRecord><clinicSequence>4567854</clinicSequence><hospitalCode>换接口</hospitalCode><departmentCode>jjj</departmentCode></paymentRecord></payList></res>\n";
        ResponseData response = XmlConverter.xmlToObject(xml, ResponseData.class);
        System.out.println(response);
    }
}

效果展示

相关扩展

另有Java XML字符串和JSON字符串互转的实现，请参考：https://www.cnblogs.com/daen/p/16779870.html