处理xml数据

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这是一个用于处理XML数据的Java工具类，包含将List对象转换为XML、单个对象转换为XML、XML转换为对象以及XML转换为List对象的方法。类中使用了XStream库，支持注解转换并提供了自定义的编码器。

工具类:处理xml
依赖：

    <dependency>
        <groupId>org.dom4j</groupId>
        <artifactId>dom4j</artifactId>
        <version>2.1.1</version>
    </dependency>

package com.cosmosource.core.utils;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.core.util.QuickWriter;
import com.thoughtworks.xstream.io.HierarchicalStreamWriter;
import com.thoughtworks.xstream.io.naming.NameCoder;
import com.thoughtworks.xstream.io.naming.NoNameCoder;
import com.thoughtworks.xstream.io.xml.CompactWriter;
import com.thoughtworks.xstream.io.xml.DomDriver;
import com.thoughtworks.xstream.io.xml.XmlFriendlyNameCoder;
import com.thoughtworks.xstream.io.xml.XppDomDriver;

import java.io.Writer;
import java.util.List;

/**

类名称：XmlUtil
类描述：XML工具类
创建人：Hsiao Lin
修改人：
修改时间：2018年10月25日14:42:46
修改备注：
@version 1.0.0

*/
public class XmlUtil {

public static XStream xstream = new XStream(new DomDriver(“UTF-8”, new XmlFriendlyNameCoder("-", "")));

/**
- 将ListObjTank转换为xml
- @param listObj 转换的bean
- @param objClass List的泛型的对象
- @return bean转换为xml
  */
  public static String listObjTankToXml(List<?> listObj, Class<?> objClass) {
  XStream xStream = getXStream();
  //xstream使用注解转换
  xStream.processAnnotations(objClass);
  xStream.alias(“NewDataSet”, List.class);
  xStream.alias(“Table”, objClass);
  return xStream.toXML(listObj);
  }
/**
- 将bean转换为xml
- @param obj 转换的bean
- @return bean转换为xml
  */
  public static String objectToXml(Object obj) {
  XStream xStream = getXStream();
  //xstream使用注解转换
  xStream.processAnnotations(obj.getClass());
  return xStream.toXML(obj);
  }
/**
- 将xml转换为bean
- @param 泛型
- @param xml 要转换为bean的xml
- @param cls bean对应的Class
- @return xml转换为bean
  */
  public static T xmlToObject(String xml, Class cls) {
  XStream xstream = new XStream(new DomDriver());
  //xstream使用注解转换
  xstream.processAnnotations(cls);
  return (T) xstream.fromXML(xml);
  }
/**
- 将xml转换为ListObjTank
- @param xml 要转换为bean的xml
- @return xml转换为bean
  */
  public static List xmlToListObjTank(String xml, Class<?> obj) {
  XStream xstream = new XStream(new DomDriver());
  //xstream使用注解转换
  xstream.processAnnotations(obj);
  xstream.processAnnotations(List.class);
  xstream.alias(“NewDataSet”, List.class);
  xstream.alias(“Table”, obj);
  return (List) xstream.fromXML(xml);
  }
public static XStream getXStream() {
final NameCoder nameCoder = new NoNameCoder();
XStream xStream = new XStream(new XppDomDriver(nameCoder) {
```
     @Override public HierarchicalStreamWriter createWriter(Writer out) {
         //输出格式化的xml字符串
         //return new PrettyPrintWriter(out, nameCoder) {
         //输出压缩的xml字符串，删除多余的空白符
         return new CompactWriter(out, nameCoder) {

             boolean cdata = false;

             @Override public void startNode(String name, Class clazz) {
                 super.startNode(name, clazz);
                 // 所有的字符串都加上CDATA标识
                 cdata = "String".equals(clazz.getSimpleName());
             }

             @Override protected void writeText(QuickWriter writer, String text) {
                 if (cdata) {
                     writer.write("<![CDATA[");
                     writer.write(text);
                     writer.write("]]>");
                 } else {
                     writer.write(text);
                 }
             }
         };
     }
 });
 return xStream;
```
}
}