【发布时间】：2019-03-14 16:21:22
【问题描述】：
我正在使用 netbeans 8.2 和 Apache Tomcat 服务器。每当我运行程序时，我都会进入注册页面。但是当我提交信息时，我应该得到一个输出。但我总是得到一个空白页。我使用的是 JAVA 中存在的数据库。请帮助我必须提交我的java项目;_;。我仍然需要创建一个登录页面。 提前致谢。
Jsp 程序
<%--
Document : registeration
Created on : Mar 12, 2019, 10:24:50 AM
Author : Pranav Sharma
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>JSP Page</title>
</head>
<body>
<div align="center">
<form action="Registeration" method="POST">
User Name:<input type="text" name="user" required="required"><br>
Password : <input type="password" name="password"
required="required"><br>
Age : <input type="text" name="age" required="required" /><br>
Gender : <select name="gender">
<option>Male</option>
<option>Female</option>
<option>Transgender</option>
</select><br>
Event : <select name="event" multiple="multiple">
<option>Mr.Tanwar Body Building</option>
<option>Fashion Show</option>
<option>Dance</option>
<option>Singing</option>
<option>Coding</option>
</select><br>
<input type="submit" value="REGISTER" />
<input type="reset" value="RESET" />
</form>
</div>
</body>
Servlet 程序
package jdbc;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
@WebServlet(name="Registeration", urlPatterns={"/Registeration"})
public class Registeration extends HttpServlet
{
private static final long serialVersionUID = 1L;
public Registeration(){
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
}
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException{
try {
String name = request.getParameter("user");
String password = request.getParameter("password");
String age = request.getParameter("age");
String gender = request.getParameter("gender");
String event = request.getParameter("event");
String sql = "insert into
registeration(name,password,age,gender,event) values(?,?,?,?,?)";
Class.forName("org.apache.derby.jdbc.ClientDriver");
Connection conn = DriverManager.getConnection("jdbc:derby://localhost:1527/RegForm","pranav","sharma");
PreparedStatement ps = conn.prepareStatement(sql);
ps.setString(1,name);
ps.setString(2,password);
ps.setString(3,age);
ps.setString(4,gender);
ps.setString(5,event);
ps.executeUpdate();
PrintWriter out = response.getWriter();
out.println("You have successfully registered!");
}
catch (ClassNotFoundException e) {
e.printStackTrace();
}
catch (SQLException e) {
e.printStackTrace();
}
}
}
Web-xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">
<servlet>
<servlet-name>Registeration</servlet-name>
<servlet-class>jdbc.Registeration</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Registeration</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
【问题讨论】：
-
你的数据有没有被插入到你的表中？
-
@Swati 不，桌子还是空的。
-
你有什么例外吗？
-
@Ros5292 我遇到了异常，但我以某种方式解决了它们（感谢堆栈溢出）。但我现在得到的只是空白屏幕。;_;
-
@AbdelghaniRoussi 在我的大学课程中。 ;_;