addrule_let.java

一个基于JSP的在线动物识别系统

package main;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import function.*;
public class addrule_let extends HttpServlet{
	public void doPost(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{
		HttpSession session=request.getSession();
		request.setCharacterEncoding("UTF-8");
		String loginFlag=(String)(session.getAttribute("login"));
		response.setContentType("text/html;charset=UTF-8");
		PrintWriter outPrintWriter=response.getWriter();
		//已经登陆的用户
		if(loginFlag!=null&&loginFlag.equals("true")){
			//这个时候千万要注意先用ISO8859_1解码，再用UTF-8编码
			//接收数据最好都用try catch 保证
			String IFString=new String(request.getParameter("IF").getBytes("ISO8859_1"),"UTF-8");
			String THENString=new String(request.getParameter("THEN").getBytes("ISO8859_1"),"UTF-8");
			String IS_FINALString=request.getParameter("FINAL");
			if(IS_FINALString!=null&&IS_FINALString.equals("on")){
				THENString+="?";
			}
			String [] tempStrings=IFString.trim().split(";");
			int length=tempStrings.length;
			String[] ruleStrings=new String[length+1];
			for(int i=0;i<length;i++){
				ruleStrings[i]=tempStrings[i];
			}
			ruleStrings[length]=THENString;
			AddRule(ruleStrings);
			response.sendRedirect("manage_let");
		}
		else{
			CommonHTML commonHTML=new CommonHTML();
			outPrintWriter.println(commonHTML.GetErrorPageHTML("Invalid Session!"));
		}
	}
	private void AddRule(String [] rule){
		String filename=getServletContext().getRealPath("/")+"/WEB-INF/classes/main/Rule.xml";
		DataBaseCenter db=new DataBaseCenter(filename);
		db.AddRule(rule);
	}
	public void doGet(HttpServletRequest request,HttpServletResponse response)throws ServletException,IOException{
		doPost(request, response);
	}
}