Question

作为Jsp的初学者，我正在构建一个注册/登录用户的简单Web应用程序。当我运行以下代码时，我收到以下错误HTTP状态500 - 内部服务器错误在eclipse和web服务器中构建Web应用程序是tomcat。我还下载并添加了jar文件。不知道出了什么问题，在谷歌上找不到任何有用的答案。我的项目中的JSP（一个用于登录，另一个用于注册）文件也出现了相同的错误。

register.jsp文件：

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>

<%@ page import ="java.sql.*" %>
<%@ page import ="javax.sql.*" %>
<%
    String user=request.getParameter("userid");
    session.putValue("userid",user);
    String pass=request.getParameter("pass");
    String fname=request.getParameter("fname");
    String lname=request.getParameter("lname");
    String email=request.getParameter("email");
    Class.forName("com.mysql.jdbc.Driver");
    java.sql.Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/pms","root","root");
    Statement st=con.createStatement();
    ResultSet rs;
    int i= st.executeUpdate("insert into users values("+user+","+pass+","+fname+","+lname+","+email+")");

    out.println("Registered");

%>

<a href="Login.html">Login</a></br>
<a href="Comp.html">Home</a></br>

</body>
</html>

错误：

HTTP Status 500 – Internal Server Error


Type Exception Report

Message An exception occurred processing [/register.jsp] at line [19]

Description The server encountered an unexpected condition that prevented it from fulfilling the request.

Exception
org.apache.jasper.JasperException: An exception occurred processing [/register.jsp] at line [19]

16:     String fname=request.getParameter("fname");
17:     String lname=request.getParameter("lname");
18:     String email=request.getParameter("email");
19:     Class.forName("com.mysql.jdbc.Driver");
20:     java.sql.Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/pms","root","root");
21:     Statement st=con.createStatement();
22:     ResultSet rs;

Answer 1

确保在tomcat bin文件夹中有数据库驱动程序（MySql jar文件）。重启tomcat，然后重试。

Answer 2

我将mysqljavaconnector.jar放在D：\ tomcat9 \ lib中，并且可以正常工作。

HTTP状态500 - 内部服务器错误-JSP-Tomcat服务器

2 个答案: