对xml格式的字符串的一些操作

/**
   *  Dom解析XML格式的字符串
   */
package com.kotei.lbs.TaskSchedule;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class TaskLoadXMLFile {
    String flag ;
    String msg;
    String id;
    String sendtime;
    String sendcontent;
    String coordinate;
    String sender;
    String status;
    String tasktype;
    String remark;
    String username;
    String graphicld;
    public boolean LoadFromFile(String path){
        boolean successful = true;
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        try {
            InputStream inStream = new  FileInputStream(new File(path));
            DocumentBuilder builder = factory.newDocumentBuilder();
            Document dom = builder.parse(inStream);
            Element root = dom.getDocumentElement();
            
            // read
            NodeList items = root.getElementsByTagName("ReplyMsg");
            // if get the item
            if (items.getLength()>0) {
                Element personNode = (Element) items.item(0);
                NodeList childsNodes = personNode.getChildNodes();
                for (int j = 0; j < childsNodes.getLength(); j++) {
                    Node node = (Node) childsNodes.item(j);
                    if(node.getNodeType() == Node.ELEMENT_NODE){ 
                        Element childNode = (Element) node;
                        String nodeName = childNode.getNodeName();
                        String nodeValue = childNode.getTextContent();
                        //判断是否name元素
                        if (nodeName.equalsIgnoreCase("ServerReplyMessage")) {
                            // if(nodeValue.length()>0)
                            // redfileFileName = nodeValue;
                            NodeList childsNodes1 = childNode.getChildNodes();
                            for (int i = 0; i < childsNodes1.getLength(); i++) {
                                Node node1 = (Node) childsNodes1.item(i);
                                if(node1.getNodeType() == Node.ELEMENT_NODE){
                                    Element childNode1 = (Element) node1;
                                    String nodeName1 = childNode1.getNodeName();
                                    String nodeValue1 = childNode1.getTextContent();
                                    if(nodeName1.equalsIgnoreCase("Flag")){
                                        if(nodeValue1.length() > 0){
                                            flag = nodeValue1;
                                        }
                                    }else if(nodeName1.equalsIgnoreCase("Msg")){
                                        if(nodeValue1.length() > 0){
                                            msg = nodeValue1;
                                        }
                                    }else if(nodeName1.equalsIgnoreCase("ShortMsgs")){
                                        NodeList childsNodes2 = childNode1.getChildNodes();
                                        for (int k = 0; k < childsNodes2.getLength(); k++) {
                                            Node node2 = (Node) childsNodes2.item(k);
                                            if(node2.getNodeType() == Node.ELEMENT_NODE){
                                                Element childNode2 = (Element) node2;
                                                String nodeName2 = childNode2.getNodeName();
                                                String nodeValue2 = childNode2.getTextContent();
                                                if(nodeName2.equalsIgnoreCase("ShortMsg")){
                                                    NodeList childsNodes3 = childNode2.getChildNodes();
                                                    for (int l = 0; l < childsNodes3.getLength(); l++) {
                                                        Node node3 = childsNodes3.item(l);
                                                        if(node3.getNodeType() == Node.ELEMENT_NODE){
                                                            Element childNode3 = (Element) node3;
                                                            String nodeName3 = childNode3.getNodeName();
                                                            String nodeValue3 = childNode3.getTextContent();
                                                            if(nodeName3.equalsIgnoreCase("ID")){
                                                                if(nodeValue3.length() > 0){
                                                                    id = nodeValue3;
                                                                }
                                                            }else if(nodeName3.equalsIgnoreCase("SendTime")){
                                                                if(nodeValue3.length() > 0){
                                                                    sendtime = nodeValue3;
                                                                }
                                                            }else if(nodeName3.equalsIgnoreCase("SendContent")){
                                                                if(nodeValue3.length() > 0){
                                                                    sendcontent = nodeValue3;
                                                                }
                                                            }else if(nodeName3.equalsIgnoreCase("Coordinate")){
                                                                if(nodeValue3.length() > 0){
                                                                    coordinate = nodeValue3;
                                                                }
                                                            }else if(nodeName3.equalsIgnoreCase("Sender")){
                                                                if(nodeValue3.length() > 0){
                                                                    sender = nodeValue3;
                                                                }
                                                            }else if(nodeName3.equalsIgnoreCase("Status")){
                                                                if(nodeValue3.length() > 0){
                                                                    status = nodeValue3;
                                                                }
                                                            }else if(nodeName3.equalsIgnoreCase("TaskType")){
                                                                if(nodeValue3.length() > 0){
                                                                    tasktype = nodeValue3;
                                                                }
                                                            }else if(nodeName3.equalsIgnoreCase("REMARK")){
                                                                if(nodeValue3.length() > 0){
                                                                    remark = nodeValue3;
                                                                }
                                                            }else if(nodeName3.equalsIgnoreCase("UserName")){
                                                                if(nodeValue3.length() > 0){
                                                                    username = nodeValue3;
                                                                }
                                                            }else if(nodeName3.equalsIgnoreCase("GraphicId")){
                                                                if(nodeValue3.length() > 0){
                                                                    graphicld = nodeValue3;
                                                                }
                                                            }
                                                        }
                                                    }
                                                }
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            }
            inStream.close();
        }catch(IOException e){
            successful = false;
            e.printStackTrace();
        }catch (Exception e) {
            successful = false;
            e.printStackTrace();
        }
        return successful;
    }
}