savedata.bak.jsp

采用JSP + Ajax + 文本来演示多选、全选

<%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK" %>
<%@ page import="java.util.*"%>
<%@ page import="java.lang.*" %>
<%@ page import="javax.servlet.*" %>
<%@ page import="javax.servlet.jsp.*" %>
<%@ page import="javax.servlet.http.* "%>
<%@ page import="java.io.*" %>
<%@ page import="java.nio.*" %>

<% 
//set Chinese Char 
request.setCharacterEncoding("GBK");
response.setCharacterEncoding("GBK");
response.setContentType("text/html; charset=GBK");
%>

<%
 BufferedReader readfile; //BufferedReader对象，用于读取文件数据
 String filename ="";//文件完整路径名
 String inLine=null;
 String getContents = "";
 String content="";
 int rowCount= 0;
 String name="",value="",desc="";
 
 if(request.getParameter("name") != null) name = request.getParameter("name").trim();
 if(request.getParameter("value") != null)value = request.getParameter("value").trim();
 if(request.getParameter("desc") != null)desc = request.getParameter("desc").trim();
 
 if(name.equals("") || value.equals("") || desc.equals("")){
  out.print("参数不对:(");
  return;
 }
	try{
	    String realpath = getServletContext().getRealPath("/");
	    realpath = realpath.replaceAll("\\\\" , "/");
	    filename = realpath + "checkbox/data/checkbox_list.txt"; 
	    
		//创建新的BufferedReader对象
		readfile = new BufferedReader( new FileReader(filename) );
		inLine = readfile.readLine();
		while ( inLine != null) {
		    //content += inLine; 
			  content += (inLine + System.getProperty("line.separator"));
			  inLine = readfile.readLine();
		  	rowCount++;
			
			}
	  }catch (IOException e){
		    //out.print("读取数据错误.");
	}

  getContents = content;
 // out.print(getContents + "name:" + name +"\t value:"+ value +"\t desc:"+desc +"\t rowCount"+rowCount+"\r\n");
  

/*-----------------------------*/	
	//write data in;
/*-----------------------------*/	
	try{
	//getStr
	String checkboxlist = "";
	checkboxlist = getContents + rowCount + "\t" + name +"\t"+ value +"\t"+ desc +  "\r\n" ;	
	String Writestr =  checkboxlist ;
	PrintWriter pw = new PrintWriter( new FileOutputStream(filename) );
    pw.print(Writestr);    
    out.print("appendOK");//output ok status
    //清除PrintWriter对象
     pw.close();
     
    }catch(IOException e) {
      out.print(e.getMessage());
    }



%>