使用XStream进行XML与对象的互相转换
近来遇到的编程过程中需要对XML进行大量的处理,java是面向对象的,所以要把XML的处理转化为面向对象的处理.下面记录下我用XStream进行XML与对象的转换过程.
public class XmlUtils {
?private static XStream xstream;
?static {
??xstream = new XStream(new DomDriver("UTF-8", new XmlFriendlyNameCoder("-_", "_")));
?}
?/**
? * XML to object.
? *
? * @param inputXml
? *??????????? XML string.
? * @param types
? *??????????? annotation classes.
? * @return
? * @throws Exception
? */
?public static Object xml2Object(String inputXml, Class<?>[] types) throws Exception {
??if (null == inputXml || "".equals(inputXml)) {
???return null;
??}
??xstream.processAnnotations(types);
??return xstream.fromXML(inputXml);
?}
?/**
? * object to XML.
? *
? * @param ro
? *??????????? Object.
? * @param types
? *??????????? annotation classes.
? * @return
? * @throws Exception
? */
?public static String object2Xml(Object ro, Class<?>[] types) throws Exception {
??if (null == ro) {
???return null;
??}
??xstream.processAnnotations(types);
??return xstream.toXML(ro);
?}
}
对生成xml中__替换_的最新写法是:xstream = new XStream(new DomDriver("UTF-8", new XmlFriendlyNameCoder("-_", "_")));
网上很多用这种XStream xstream = new XStream(new XppDriver(new XmlFriendlyReplacer("-_", "_")));
帮助文档上明确写明
?/**
???? * @since 1.2
???? * @deprecated As of 1.4, use {@link #DomDriver(String, NameCoder)} instead.
???? */
说明1.4已经废弃了这种做法.
处理过程中都用了annotations来处理对象,下面是其中一个对象的例子
import com.thoughtworks.xstream.annotations.XStreamAlias;
@XStreamAlias("RESULT")
public class ResultObject {
?@XStreamAlias("RTNCODE")
?private String rtncode;
?@XStreamAlias("MESSAGE")
?private String message;
?@XStreamAlias("CONTENT")
?private Content content;
...省略了get, set方法
?
下面是使用XmlUtils 的测试例子
try {
???Class<?>[] types = new Class[] { ResultObject.class, Content.class};
???resultXml = XmlUtils.object2Xml(ro, types);//其中ro是要转换的对象
???System.out.println(resultXml);
??} catch (Exception e) {
???System.out.println(e.getMessage());
???e.printStackTrace();
??}
?
//下面是转换xml成对象的测试代码
???InputObject io = (InputObject) XmlUtils.xml2Object(str, new Class[] { InputObject.class });
?
其中str是xml格式字符串.
?
经过测试,转换效率还挺高.
如有问题,请联系我.谢谢,如转载请注明出处.
