JAVA将数据转json和XML

import java.util.ArrayList;import java.util.List;import net.sf.json.JSONObject;import com.thoughtworks.xstream.XStream;import com.thoughtworks.xstream.io.xml.DomDriver;/** * Title: Ext JS 辅助类 * Description: 该类用于转换java对象为XML文件格式或JSON文件格式 */public class ExtHelper {/** * 通过List生成XML数据 * @param recordTotal 记录总数，不一定与beanList中的记录数相等 * @param beanList 包含bean对象的集合 * @return 生成的XML数据 */@SuppressWarnings("unchecked")public static String getXmlFromList(long recordTotal , List beanList) {Total total = new Total();total.setResults(recordTotal);List results = new ArrayList();results.add(total);results.addAll(beanList);XStream sm = new XStream(new DomDriver());for (int i = 0; i < results.size(); i++) {Class c = results.get(i).getClass();String b = c.getName();String[] temp = b.split("\\.");sm.alias(temp[temp.length - 1], c);}String xml = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"+ sm.toXML(results);return xml;}/** * 通过List生成XML数据 * @param beanList 包含bean对象的集合 * @return 生成的XML数据 */@SuppressWarnings("unchecked")public static String getXmlFromList(List beanList){return getXmlFromList(beanList.size(),beanList);}/** * 通过List生成XML数据 * @param beanList 包含bean对象的集合 * @return 生成的XML数据 */@SuppressWarnings("unchecked")public static String getJsonFromList(long recordTotal , List beanList){TotalJson total = new TotalJson();total.setResults(recordTotal);total.setItems(beanList);JSONObject JsonObject = JSONObject.fromObject(total);return JsonObject.toString();}/** * 通过List生成JSON数据 * @param beanList 包含bean对象的集合 * @return 生成的JSON数据 */@SuppressWarnings("unchecked")public static String getJsonFromList(List beanList){return getJsonFromList(beanList.size(),beanList);}/** * 通过bean生成JSON数据 * @param bean bean对象 * @return 生成的JSON数据 */public static String getJsonFromBean(Object bean){JSONObject JsonObject = JSONObject.fromObject(bean);return JsonObject.toString();}}