Question

package mypackage;


import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Register extends HttpServlet {


    static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
    static final String DB_URL = "jdbc:mysql://localhost:3306/test";
    static final String USER = "root";
    static final String PASS = "";
    Connection conn = null;
    Statement stmt = null;
    public void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {


        response.setContentType("text/html");
        PrintWriter out = response.getWriter();

        String n=request.getParameter("userName");
        String p=request.getParameter("userPass");
        String e=request.getParameter("userEmail");
        String c=request.getParameter("userCountry");

        try {
            Class.forName("com.mysql.jdbc.Driver");
        conn = DriverManager.getConnection(DB_URL, USER, PASS);

        stmt=conn.createStatement();
        String sql="insert into test values(?,?,?,?)";


        } catch (ClassNotFoundException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        } catch (SQLException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }



    }
}

这是我创建index.html文件的代码，当我在web.xml中编写这样的代码时..

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <servlet>
    <servlet-name>RegisterServlet</servlet-name>
    <servlet-class>mypackage.Register</servlet-class>
  </servlet>
  <servlet-mapping>
    <servlet-name>RegisterServlet</servlet-name>
    <url-pattern>/Register</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
  </welcome-file-list>
</web-app>

但是我运行应用程序时无法加载html文件请告诉我如何在web.xml文件中设置servlet-name，servlet-classes all。请帮助我在Jsp servlet中新建。

Answer 1

根据您的web.xml

您的index.html应该直接位于项目文件夹

中

结构应该是这样的

project/index.html

并且您的servlet类应该位于类文件夹

中

project/WEB-INF/classes/servlet.class

如何在web.xml文件中设置servletname和class

1 个答案: