通过类反射生成xml文件

来源：互联网发布：知彼而知己打不开编辑：程序博客网时间：2024/05/01 14:07

解析xml地址：http://blog.csdn.net/without0815/article/details/45461395

入口测试类：

注：class 有很多方法需看java的api

package priv.yingmm.main;import java.io.ByteArrayInputStream;import java.io.FileOutputStream;import java.lang.reflect.Field;import java.util.ArrayList;import java.util.List;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.transform.Transformer;import javax.xml.transform.TransformerFactory;import javax.xml.transform.dom.DOMSource;import javax.xml.transform.stream.StreamResult;import org.w3c.dom.Document;import priv.yingmm.entity.Area;/** * @Description: xml生成测试类 * @ClassName: ReflexTest * @author yingmm * @date 2015-5-2 下午08:53:21 *  */public class ReflexTest {public static void main(String[] args) throws Exception {/**S 测试数据*/List<Area> areaList = new ArrayList<Area>();for (int i = 0; i < 10; i++) {areaList.add(new Area("33022" + i, "宁波市", 3000));}/**E 测试数据*//**S 生成xml和写入数据*/DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();DocumentBuilder db = dbf.newDocumentBuilder();String parseStr = ReflexTest.parseStr(areaList);Document document = db.parse(new ByteArrayInputStream(parseStr.getBytes()));TransformerFactory tf = TransformerFactory.newInstance();Transformer t = tf.newTransformer();t.setOutputProperty("encoding", "utf-8");DOMSource doms = new DOMSource(document.getDocumentElement());StreamResult sr = new StreamResult(new FileOutputStream("area.xml"));t.transform(doms, sr);/**E 生成xml和写入数据*/}/** * @param 集合拼接转换成字符串 * @author yingmm * @throws Exception */private static String parseStr(List list) throws Exception {// TODO Auto-generated method stubStringBuffer sb = new StringBuffer();sb.append("<areas>");for (int i = 0; i < list.size(); i++) {@SuppressWarnings("rawtypes")Class cl = list.get(i).getClass();Field[] f = cl.getDeclaredFields();sb.append("<area");sb.append(" id=\""+ cl.getMethod("getAreaCode", new Class[] {}).invoke(list.get(i), new Class[] {}) + "\">");for (int j = 0; j < f.length; j++) {if ("areaCode".equals(f[j].getName())) {continue;}f[j].setAccessible(true);sb.append("<" + f[j].getName() + ">");sb.append(f[j].get(list.get(i)));sb.append("</" + f[j].getName() + ">");f[j].setAccessible(false);}sb.append("</area>");}sb.append("</areas>");return sb.toString();}}

Area.java 类

package priv.yingmm.entity;/** * @Description: 区域类 * @ClassName: Area * @author yingmm * @date 2015-5-2 下午08:05:53 *  */public class Area {private String areaCode;private String areaName;private int personNum;// private String city;public Area() {super();}public Area(String areaCode, String areaName, int personNum) {super();this.areaCode = areaCode;this.areaName = areaName;this.personNum = personNum;}public String getAreaCode() {return areaCode;}public void setAreaCode(String areaCode) {this.areaCode = areaCode;}public String getAreaName() {return areaName;}public void setAreaName(String areaName) {this.areaName = areaName;}public int getPersonNum() {return personNum;}public void setPersonNum(int personNum) {this.personNum = personNum;}}

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