Java Servlet-HTTP状态405-此URL不支持HTTP方法GET / POST

Question

I have created a form:

  <form method="post" action="new">
      <input type="text" name="title" />
      <input type="text" name="description" />
      <input type="text" name="released" />

      <input type="submit" value="Send" />
    </form>

When I send this form, I will get following error:

HTTP Status 405 - HTTP method POST is not supported by this URL

I changed in the form post to get , but I got a similar error:

Here's how look like the servlet:

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;

public class MyServlet extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");

    String title = request.getParameter("title");
    String description = request.getParameter("description");
    String released_string = request.getParameter("released");
    int released = Integer.parseInt(released_string);
    try {
        Class.forName("com.mysql.jdbc.Driver");
        Connection con=DriverManager.getConnection("jdbc:mysql://localhost:8889/app_name", "username", "password");
        PreparedStatement ps=con.prepareStatement("insert into movies values(?, ?, ?)");

        ps.setString(1, title);
        ps.setString(2, description);
        ps.setString(3, released_string);
        int i=ps.executeUpdate();    
    } catch(Exception se) {
        se.printStackTrace();
    }
  }
}  

I am newbie in Java, but what am I missing in this example? Changing the method how the form is sent out didn't work out...

Thank you in advance.

Answer 1

The entry point of any Servlet is the service(ServletRequest, ServletResponse) method. HttpServlet implements this method and delegates to one of its doGet , doPost , etc. method based on the HTTP method.

You need to override either service() or the approriate doXxx() methods. Your processRequest method serves no purpose right now.

Answer 2

you need to override the doPost() method and call your processRequest() inside it.

@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    processRequest(request, response);
}