SpringBoot项目使用xml格式的出入参

1. 新建一个SpringBoot web项目
2. 启用jackson的xml依赖（SpringBoot已经做好了版本适配，故不需要声明版本号）

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

3. 编写一个Controller

package com.example.mono;

import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
import lombok.Data;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
public class MonoApplication {

    public static void main(String[] args) {
        SpringApplication.run(MonoApplication.class, args);
    }

}

@RestController
@RequestMapping("/my")
class MyController {

    /**
     * 1：consumes = MediaType.APPLICATION_XML_VALUE 表示接受xml格式的入参，框架会将xml格式的入参转换为bean。
     * 2：produces = MediaType.APPLICATION_XML_VALUE 表示返回xml格式的结果，框架会将返回值bean转换为xml。
     *
     * @param me
     * @return
     */
    @PostMapping(value = "/getMe", consumes = MediaType.APPLICATION_XML_VALUE, produces = MediaType.APPLICATION_XML_VALUE)
    public Me geMe(@RequestBody Me me) {
        return me;
    }

}

@Data
@JacksonXmlRootElement(localName = "YyghInterface")  //本类对应的xml的根节点名称
class Me {

    @JacksonXmlProperty(localName = "yyjsls")  //声明字段在xml中的节点名称
    private String hospitalSettleSerialNo;

    @JacksonXmlProperty(localName = "pay")
    private String amount;

    @JacksonXmlProperty(localName = "zffs")
    private String payChannel;

}

5. postman请求localhost:8080/my/getMe（注意post方法，body为raw-xml）

接口输入：
<interface>
    <yyjsls>111111</yyjsls>
    <pay>11.11</pay>
    <zffs>1</zffs>
</interface>

接口返回值：
<interface>
    <yyjsls>111111</yyjsls>
    <pay>11.11</pay>
    <zffs>1</zffs>
</interface>

6. 使用原生SpringBoot按上述步骤，完全可以秒支持xml的。由于公司项目框架基于SpringBoot做了改造，故死活以json格式处理出入参，问问技术组如何解决吧。

7. 补充一个有嵌套层次的数据对象

package com.dto.response;

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 io.swagger.annotations.ApiModelProperty;
import lombok.Data;

import java.io.Serializable;
import java.util.List;

@Data
@JacksonXmlRootElement(localName = "YyghInterface")
public class InventoryDetailResponseXmlDTO implements Serializable {

    private static final long serialVersionUID = -697190814864891722L;

    @ApiModelProperty(value = "判断是否返回成功1表示成功，其余失败")
    @JacksonXmlProperty(localName = "RtnValue")
    private Integer RtnValue;

    @ApiModelProperty(value = "表示返回信息，一般用于失败信息跟踪反馈")
    private String bzxx;

    @ApiModelProperty(value = "interface节点")
    @JacksonXmlProperty(localName = "interface")
    private InterFaceDTO interFaceDTO;

    @Data
    public static class InterFaceDTO implements Serializable {

        private static final long serialVersionUID = 8864874279293665726L;

        @JacksonXmlProperty(localName = "row")
        @JacksonXmlElementWrapper(useWrapping = false)
        private List<RowDTO> row;
    }

    @Data
    public static class RowDTO implements Serializable {

        private static final long serialVersionUID = 2554639268967759723L;

        @ApiModelProperty(value = "就诊序号")
        private String jzxh;

        @ApiModelProperty(value = "就诊时间 精确到HH:MM")
        private String jzsj;

        private String jzsj2;

        /**
         * 号源类别，默认1
         * 1.普通号源，默认 4.家庭医生专用号源 5.OA专用号源 6.医养护平台专用号源（06共享号源--杭州健康通） 7.医养护平台专用号
         */
        private String yylb;
    }

}

8. 手动转换示例

package com.dto;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty;
import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
import lombok.Data;

/**
 * @description:
 * @author: Yang
 * @since: 2022/11/6
 */
@Data
@JacksonXmlRootElement(localName = "output")
public class DownloadFileResultDTO {

    @JacksonXmlProperty(localName = "rowcount")
    public Integer rowCount;

    public static void main(String[] args) throws JsonProcessingException {
        // 0.实例化一个转换器
        ObjectMapper objectMapper = new XmlMapper();

        // 1.将对象序列化为xml
        DownloadFileResultDTO xmlObject = new DownloadFileResultDTO();
        xmlObject.setRowCount(1000);
        System.out.println(objectMapper.writeValueAsString(xmlObject));

        // 2.将xml反序列化为对象
        String xmlString = "<?xml version=\"1.0\" encoding=\"GBK\" standalone=\"yes\" ?><output><rowcount>1000</rowcount></output>";
        DownloadFileResultDTO resultDTO = objectMapper.readValue(xmlString, DownloadFileResultDTO.class);
        System.err.println(resultDTO.getRowCount());
    }

}