xstream解析xml报文

jar包

<dependency>
    <groupId>com.thoughtworks.xstream</groupId>
    <artifactId>xstream</artifactId>
    <version>1.4.9</version>
</dependency>

工具类

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
import com.thoughtworks.xstream.io.xml.XmlFriendlyNameCoder;
import com.thoughtworks.xstream.mapper.MapperWrapper;


import java.io.InputStream;

/**
 * xml解析工具类
 * azj
 * 2021-12-31
 */
public class XmlUtils {
　　//xml转java对象
    public static Object xml2Object(String inputXml, Class<?> type) throws Exception {
        if (null == inputXml || "".equals(inputXml)) {
            return null;
        }
　　　　　//解决单下划线转双下划线
        XStream xstream = new XStream(new DomDriver("UTF-8", new XmlFriendlyNameCoder("-_", "_"))){
　　　　　　　//xml只映射对象中有的属性
            @Override
            protected MapperWrapper wrapMapper(MapperWrapper next) {
                return new MapperWrapper(next) {
                    @Override
                    public boolean shouldSerializeMember(Class definedIn, String fieldName) {
                        if(definedIn == Object.class){
                            return false;
                        }
                        return super.shouldSerializeMember(definedIn, fieldName);
                    }
                };
            }
        };
        xstream.processAnnotations(type);
        return xstream.fromXML(inputXml);
    }

    /**
     * 对象转xml
     */
    public static String object2Xml(Object ro, Class<?> types) throws Exception {
        if (null == ro) {
            return null;
        }
        XStream xstream = new XStream(new DomDriver("UTF-8", new XmlFriendlyNameCoder("-_", "_")));
        xstream.alias("xml", types);
        return xstream.toXML(ro);
    }
}

实体

@XStreamAlias("FFMFLT")//根节点
public class Students {
    @XStreamAlias("ppw")//对象或属性
    private Ppw ppw;
    @XStreamImplicit(itemFieldName = "ten")//多节点
    private List<Ten> list;
}

@XStreamAlias("ppw")
public class Ppw {
    @XStreamAlias("AIRLINEID")
    private String firstname;
    @XStreamAlias("FLIGHTNO")
    private String lastname;
    @XStreamAlias("FLIGHT_DATE")
    private String aa;
    @XStreamAlias("SAIRPORT")
    private String qq;
    @XStreamAlias("EAIRPORT")
    private String bb;
    @XStreamAlias("REG")
    private String cc;
}

@XStreamAlias("ten")
public class Ten {
    @XStreamAlias("oo")
    private String oo;
}

xml报文 --不映射<yyy>

<FFMFLT>
　　<ppw>
　　　　<AIRLINEID>ZH</AIRLINEID>
　　　　<FLIGHTNO>9674</FLIGHTNO>
　　　　<FLIGHT_DATE>2021-12-21</FLIGHT_DATE>
　　　　<SAIRPORT>HRB</SAIRPORT>
　　　　<EAIRPORT>CAN</EAIRPORT>
　　　　<REG>1685</REG>
　　</ppw>
　　<yyy>
　　　　<ii>qqq</ii>
　　</yyy>
　　<yyy>
　　　　<ii>rrr</ii>
　　</yyy>
　　<yyy>
　　　　<ii>www</ii>
　　</yyy>
　　<ten>
　　　　<oo>1</oo>
　　</ten>
　　<ten>
　　　　<oo>2</oo>
　　</ten>
　　<ten>
　　　　<oo>3</oo>
　　</ten>
　　<ten>
　　　　<oo>4</oo>
　　</ten>
</FFMFLT>

参考文献:https://www.cnblogs.com/javallh/p/10477185.html