📄 select.java
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package server;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import Bo.UserBo;
import Mod.UserMod;
public class select extends HttpServlet {
/**
* Constructor of the object.
*/
public select() {
super();
}
/**
* Destruction of the servlet. <br>
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}
/**
* The doGet method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
List <UserMod>list=null;
UserMod user=new UserMod();
UserBo use=new UserBo();
String error="";
String error1="";
response.setContentType("text/html;charset=gb2312");
PrintWriter out = response.getWriter();
request.setCharacterEncoding("gb2312");
if(request.getParameter("Name").length()<=16){if(request.getParameter("Name").length()>=1){
user.setName(request.getParameter("Name"));}else{error=error+"Name is null";}
}else{error=error+"Name > 16";}
try{
use.setUser(user);
list=use.useselect();
}catch(NullPointerException e){}
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.print("<table border=2>");
out.print("<tr align=center>");
out.print("<td>Name</td>");
out.print("<td>Password</td>");
out.print("</tr>");
try{
for(int i=0;i<list.size();i++){
out.print("<tr align=center>");
out.print("<td>"+((UserMod)list.get(i)).getName()+"</td>");
out.print("<td>"+((UserMod)list.get(i)).getPassword()+"</td>");
out.print("</tr>");
}
}catch(NullPointerException
e){}
out.print("<form action=../index.jsp>");
out.print("<input type=submit value=返回>");
out.print("</form>");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
/**
* The doPost method of the servlet. <br>
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request,response);
}
/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}
}
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