xml 自动转 javabean

根据 xml 生成 xsd 文件

使用 idea 打开 xml 文件, 鼠标右键点击, 然后点击如下图位置生成 xsd 文件, 注意要选择 local elements/types

根据 xsd 生成带有 jaxb 注解的 javabean

jaxb 工具类

import javax.xml.bind.JAXBContext;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import java.io.StringReader;
import java.io.StringWriter;

public class JaxbUtil {
  /**
   * JavaBean转换成xml
   * 默认编码UTF-8
   * @param obj
   * @param writer
   * @return
   */
  public static String convertToXml(Object obj) {
    return convertToXml(obj, "UTF-8");
  }
  /**
   * JavaBean转换成xml
   * @param obj
   * @param encoding
   * @return
   */
  public static String convertToXml(Object obj, String encoding) {
    String result = null;
    try {
      JAXBContext context = JAXBContext.newInstance(obj.getClass());
      Marshaller marshaller = context.createMarshaller();
      marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
      marshaller.setProperty(Marshaller.JAXB_ENCODING, encoding);
      StringWriter writer = new StringWriter();
      marshaller.marshal(obj, writer);
      result = writer.toString();
    } catch (Exception e) {
      e.printStackTrace();
    }
    return result;
  }
  /**
   * xml转换成JavaBean
   * @param xml
   * @param c
   * @return
   */
  @SuppressWarnings("unchecked")
  public static <T> T converyToJavaBean(String xml, Class<T> c) {
    T t = null;
    try {
      JAXBContext context = JAXBContext.newInstance(c);
      Unmarshaller unmarshaller = context.createUnmarshaller();
      t = (T) unmarshaller.unmarshal(new StringReader(xml));
    } catch (Exception e) {
      e.printStackTrace();
    }
    return t;
  }
}

测试

import com.caac.imf.api.IMFClient;
import com.caac.imf.api.IMFClientFactory;
import com.chun.test.xml.JaxbUtil;
import com.chun.test.xml.MSG;

/**
 * @Author chun
 * @Date 2019/7/26 10:58
 */
public class test {
    public static void main(String[] args) {
        String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
                "<MSG>" +
                "    <META>" +
                "        <SNDR>FIMS</SNDR>" +
                "        <RCVR></RCVR>" +
                "        <SEQN>1</SEQN>" +
                "        <DDTM>2010010223000</DDTM>" +
                "        <TYPE>DFOE</TYPE>" +
                "        <STYP>DFDE</STYP>" +
                "    </META>" +
                "    <DFLT>" +
                "        <FLID>657423</FLID>" +
                "        <FFID>3U-8898-20100103081030-A</FFID>" +
                "        <FLTK>W/Z</FLTK>" +
                "    </DFLT>" +
                "</MSG>";
        MSG msg = JaxbUtil.converyToJavaBean(xml, MSG.class);
        System.out.println(msg.getDFLT().getFFID());

        String res = JaxbUtil.convertToXml(msg);
        System.out.println(res);
    }
}

输出结果

3U-8898-20100103081030-A
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<MSG>
    <META>
        <SNDR>FIMS</SNDR>
        <RCVR></RCVR>
        <SEQN>1</SEQN>
        <DDTM>2010010223000</DDTM>
        <TYPE>DFOE</TYPE>
        <STYP>DFDE</STYP>
    </META>
    <DFLT>
        <FLID>657423</FLID>
        <FFID>3U-8898-20100103081030-A</FFID>
        <FLTK>W/Z</FLTK>
    </DFLT>
</MSG>

参考链接：
https://blog.csdn.net/qq_36874292/article/details/88687945