我引用了 ->
https://www.quora.com/How-can-I-make-my-first-JSP-page-using-MySQL-database
一开始jsp文件是打开的，我可以输入数据，但是点击提交后，它给出了提供的图像中的错误。
我正在使用 tomcat v7.0，它适用于所有其他项目!
代码->
登录.jsp文件
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Register form</title>
</head>
<body>
<form method="post" action="register">
Name:<input type="text" name="name" /><br/>
Email ID:<input type="text" name="email" /><br/>
Password:<input type="text" name="pass" /><br/>
<input type="submit" value="register" />
</form>
</body>
</html>
注册.java文件
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;
public class Register extends HttpServlet {
protected void doPost(HttpServletRequest request,
HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
String name = request.getParameter("name");
String email = request.getParameter("email");
String pass = request.getParameter("pass");
try{
//loading drivers for mysql
Class.forName("com.mysql.jdbc.Driver");
//creating connection with the database
Connection con=DriverManager.getConnection
("jdbc:mysql:/
/localhost:3306/test","username","password");
PreparedStatement ps=con.prepareStatement
("insert into Student values(?,?,?)");
ps.setString(1, name);
ps.setString(2, email);
ps.setString(3, pass);
int i=ps.executeUpdate();
if(i>0)
{
out.println("You are sucessfully registered");
}else{
out.println("Invalid User");
}
}
catch(Exception se)
{
se.printStackTrace();
}
}
}
最佳答案
你忘记在教程中添加 web.xml 了 servlet
<servlet>
<servlet-name>register</servlet-name>
<servlet-class>Register</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>register</servlet-name>
<url-pattern>/register</url-pattern>
</servlet-mapping>
关于mysql - 当我在 jsp 中单击提交按钮时出现错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44851092/