jsp_project_/store/src/RegisterSevrlet -优快云博客

本文链接：https://blog.youkuaiyun.com/goushaoping04/article/details/1643507

本文介绍了一个使用Servlet实现用户注册功能的Java程序。该程序通过doPost方法处理用户提交的数据，并将其插入到数据库中。同时，它还检查用户名是否已存在。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

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 conn.ConnectionDatabase;

public class RegisterSevrlet extends HttpServlet {

/**
*
*/
private static final long serialVersionUID = 1L;

/**
* Constructor of the object.
*/
public RegisterSevrlet() {
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 {

  response.setContentType("text/html");
  PrintWriter out = response.getWriter();
  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("    This is ");
  out.print(this.getClass());
  out.println(", using the GET method");
  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 {

  response.setContentType("text/html");
  PrintWriter out = response.getWriter();
  String name = new String(((String)request.getParameter("userName")).getBytes("ISO-8859-1"),"GBK");
  String sex = new String(((String)request.getParameter("usersex")).getBytes("ISO-8859-1"),"GBK");
  String pass = new String(((String)request.getParameter("userPass")).getBytes("ISO-8859-1"),"GBK");
  String indexT = new String(((String)request.getParameter("select")).getBytes("ISO-8859-1"),"GBK");
  String indexN = new String(((String)request.getParameter("indexNum")).getBytes("ISO-8859-1"),"GBK");
  String email = new String(((String)request.getParameter("userEmail")).getBytes("ISO-8859-1"),"GBK");
  String telePhone = new String(((String)request.getParameter("telephone")).getBytes("ISO-8859-1"),"GBK");
  String address = new String(((String)request.getParameter("userAdd")).getBytes("ISO-8859-1"),"GBK");
  ConnectionDatabase con = new ConnectionDatabase();
  if(con.isNull("select * from userInfo where UName='"+name+"'"))
  {
   response.sendRedirect("RegisterFail.jsp");
  }else
  {
   String sql = "insert userInfo values";

   sql+=" ('"+name+"','"+sex+"','"+pass+"','"+indexT+"','"+indexN+"','"+email+"','"+telePhone+"','"+address+"')";

   if(con.updateBase(sql)>0)
   {
    response.sendRedirect("ReLogin.jsp");
   }else
   {
    response.sendRedirect("RegisterFail.jsp");
   }
  }
  out.flush();
  out.close();
}

/**
* Initialization of the servlet. <br>
*
* @throws ServletException if an error occure
*/
public void init() throws ServletException {
// Put your code here
}

}