[英]JSP/JDBC: HTTP Status 404 - Not Found
我的HTTP狀態為404-找不到。
我正在使用Netbeans IDE和Glassfish服務器以及MySql作為數據庫。 我無法理解為什么出現錯誤。 這是我的代碼。我是初學者。
謝謝!
這是我的JSP文件:
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>User Application Registration</title>
</head>
<body>
<h1>Registration Page</h1>
<form action="ServletRegister" method="post">
Name: <input type="text" name="name"><br/>
Password: <input type="password" name="password"><br/>
Email: <input type="text" name="email"><br/>
Language: <select name="language">
<option>Hindi</option>
<option>English</option>
<option>Bengali</option>
</select><br/>
<input type="submit" value="Submit"/>
</form>
</body>
這是我的Servlet文件:
package RegisterPackage;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class ServletRegister extends HttpServlet {
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
String n = request.getParameter("name");
String p = request.getParameter("password");
String e = request.getParameter("email");
String l = request.getParameter("language");
try {
Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/demo", "root", "root");
PreparedStatement ps = con.prepareStatement("insert into userdetails values(?,?,?,?)");
ps.setString(1, n);
ps.setString(2, p);
ps.setString(3, e);
ps.setString(4, l);
int i = ps.executeUpdate();
if (i > 0)
out.print("You are successfully registered!");
}
catch (Exception e2) {
System.out.println(e2);
}
out.close();
}
}
這是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>ServletRegister</servlet-name>
<servlet-class>RegisterPackage.ServletRegister</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ServletRegister</servlet-name>
<url-pattern>/ServletRegister</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>
30
</session-timeout>
</session-config>
</web-app>
NetBeans中的目錄結構:
我的輸出:
您的Web應用程序中沒有任何內容可以處理對上下文根http://localhost:8080/UserApplication
的請求,因此servlet容器返回404 not found
錯誤:
http://localhost:8080/UserApplication/ServletRegister
WEB-INF
因此該頁面不可見 您可以將JSP頁面移動到目錄Web Pages
,更正名稱( register.jsp
),然后調用http://localhost:8080/UserApplication/register.jsp
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