网络拓扑图.

package com.visec.systemConfig; import java.io.BufferedReader; import java.io.File; import java.io.FileReader; import java.io.IOException; import java.io.PrintWriter; import java.io.RandomAccessFile; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * <p>Title: 网络拓扑图保存</p> * <p>Description: 将网络拓扑图保存至对应的xml文件中 以及 读取网络拓扑图对应的xml文件</p> * <p>Copyright: Copyright (c) 2015</p> * <p>Company: xxx科技</p> * @author 李尚志 * @version 3.0 */ public class SaveToXmlServlet extends HttpServlet { private static final long serialVersionUID = 1L; public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doPost(request,response); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=utf-8"); response.setCharacterEncoding("utf-8"); request.setCharacterEncoding("utf-8"); String type = request.getParameter("type"); String tp = request.getParameter("tp"); StringBuffer result = new StringBuffer(""); String xmlPath=new String(""); String strPath = this.getClass().getResource("/").toString(); xmlPath = ("qsy".equals(tp))?"network_map/network_qsy.xml":("dzj".equals(tp))?"network_map/network_dzj.xml":("zdw".equals(tp))?"network_map/network_zdw.xml":"network_map/network_sp.xml"; String osName = System.getProperties().getProperty("os.name"); if(osName.toLowerCase().indexOf("windows")>-1){ strPath=strPath.substring(6)+xmlPath; }else{ strPath=strPath.substring(5)+xmlPath; } File file = new File(strPath); if(file.isFile()){//判断该路径是否为一个文件 if("set".equals(type.toLowerCase())){//文件保存 String xml = request.getParameter("xml"); if(xml==null||"".equals(xml)){ result.append("0"); }else{ RandomAccessFile randomAccessFile = new RandomAccessFile(strPath, "rw"); randomAccessFile.seek(0); randomAccessFile.setLength(0); randomAccessFile.write(xml.getBytes()); randomAccessFile.close(); result.append("1"); } }else if("get".equals(type.toLowerCase())){//获取文件信息 //开始读取 BufferedReader reader = new BufferedReader(new FileReader(new File(strPath))); String tempString = null; // 一次读入一行，直到读入null为文件结束 while ((tempString = reader.readLine()) != null){ result.append(tempString); } reader.close(); } }else{ System.out.println(strPath+" 找不到！"); result.append("0"); } PrintWriter out = response.getWriter(); out.write(result.toString()); out.flush(); out.close(); } }