xstream 解析xml报文

一、xml一种格式的数据转换为对象

pom.xml引入

<!--javaBean和XML的双向转换-->

<dependency>

    <groupId>com.thoughtworks.xstream</groupId>

    <artifactId>xstream</artifactId>

    <version>1.4.</version>

</dependency>

xml文件模板

<?xml version="1.0" encoding="GBK"?>

<MESSAGE>

    <MESSAGEHEAD>

        <MESSAGEID/>

        <SRC/>

    </MESSAGEHEAD>

    <MESSAGEBODY>

        <TRANLIST>

            <TRAN_DATE/>

            <TRAN_TIME/>

        </TRANLIST>

    </MESSAGEBODY>

</MESSAGE>

后台需要创建

1、总类Total

class Total

    private static final String headInfo = "<?xml version=\"1.0\" encoding=\"GBK\"?>";

    @XStreamAlias("MESSAGEHEAD")

    private Head head;

    @XStreamAlias("MESSAGEBODY")

    private Body body;
　　// getter setter

2、头部信息Head

class Head

    @XStreamAlias("MESSAGEID")

    private String messageId;

    @XStreamAlias("SRC")

    private String src;

    // getter settter

3、Body，明细类集合

class Body

    @XStreamImplicit(itemFieldName = "TRANLIST")

    private List<Detail> detail;

4、Detail明细类

class Detail

    @XStreamConverter(value = XStreamDateConverter.class)

    @XStreamAsAttribute

    @XStreamAlias("TRAN_DATE")

    private Date tranDate;

    @XStreamAlias("TRAN_TIME")

    private String tranTime;
　　// getter setter

需要强调的是： String类型不需要转换，其他的类型都可以通过实现接口SingleValueConverter来实现转换格式，编写一个转换日期Date格式的转换，其他类似

public class XStreamDateConverter implements SingleValueConverter {

    private final String YMD = "yyyyMMdd";

    SimpleDateFormat dateFormat = new SimpleDateFormat(YMD);

    @Override

    public String toString(Object o) {

        String result = null;

        if (o instanceof Date) {

            Date date = (Date) o;

            result = dateFormat.format(date);

        }

        return result;

    }

    @Override

    public Object fromString(String s) {

        Date date = null;

        if (s != null && !"".equals(s)) {

            try {

                date = dateFormat.parse(s);

            } catch (ParseException e) {

                e.printStackTrace();

            }

        }

        return date;

    }

    @Override

    public boolean canConvert(Class aClass) {

        return Date.class == aClass;

    }

}

基础工作已经完成，接下来就是将xml转换为对象实体

public static Total transXmlToObject(String xmlBody) {

        XStream xStream = new XStream();

        xStream.alias("MESSAGE", Total.class);

        xStream.alias("MESSAGEHEAD", Head.class);

        xStream.alias("MESSAGEBODY", Body.class);

        xStream.alias("TRANLIST", Detail.class);

        xStream.processAnnotations(new Class[]{Total.class, Head.class, Body.class, Detail.class});

        Object object = xStream.fromXML(xmlBody);

        Total data = (Total) object;

        return data;

    }

巴特西

xstream 解析xml报文

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