Question

我正在尝试创建一个servlet，它使用类GetTicketInfo从HTML表单中读取数据，并使用WriteToDatabase类将数据插入到MySQL数据库中。问题是当我填写HTML表单并按下Register Ticket按钮时，它应该开始将数据插入数据库的过程中我在浏览器中收到此错误“HTTP状态405 - HTTP此网址“不支持GET方法。我的index.html的URL（包含表单）是http://localhost/IssueHandler/index.html我使用Apache Tomcat 7.0.34服务器

控制台不会打印任何错误，而是两个警告：

WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:CDM' did not find a matching property.
jan 12, 2015 5:42:06 EM org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:IssueHandler' did not find a matching property.
jan 12, 2015 5:42:07 EM org.apache.catalina.core.AprLifecycleListener initializeSSL

我猜它与无法找到servlet的表单有关，但我老实说不知道。我已经尝试将servlet-mapping标签等添加到web.xml文件中，但它没有帮助。

GetTicketInfo

package com.issue.handler;

import java.io.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;

import javax.servlet.*;
import javax.servlet.annotation.*;
import javax.servlet.http.*;

@WebServlet("/issueHandler")
public class GetTicketInfo extends HttpServlet {


    String ticketID1, ticketOwner1, ticketTitle1, ticketHandler1, ticketCategory1, ticketDescription1, ticketDate1;

    public void doGet(HttpServletRequest request,
            HttpServletResponse response, String tID) {
        tID=request.getParameter("ticketID");
        ticketID1=tID;

    }

    public String getTicketID(){

        return ticketID1;

    }


    public void setTicketOwner(HttpServletRequest request,
            HttpServletResponse response, String tOW) {
        tOW=request.getParameter("ticketOwner");
        ticketOwner1 = tOW;

    }

    public String getTicketOwner(){

        return ticketOwner1;

    }

    public void setTicketTitle(HttpServletRequest request,
            HttpServletResponse response, String tTI) {
        tTI=request.getParameter("ticketTitle");
        ticketTitle1 = tTI;

    }

    public String getTicketTitle(){

        return ticketTitle1;

    }

    public void setTicketHandler(HttpServletRequest request,
            HttpServletResponse response, String tHA) {
        tHA=request.getParameter("ticketHandler");

        ticketHandler1 = tHA;

    }

    public String getTicketHandler(){

        return ticketHandler1;

    }

    public void setTicketCategory(HttpServletRequest request,
            HttpServletResponse response, String tCA) {
        tCA=request.getParameter("ticketCategory");

        ticketCategory1 = tCA;

    }

    public String getTicketCategory(){

        return ticketCategory1;

    }

    public void setTicketDescription(HttpServletRequest request,
            HttpServletResponse response, String tDE) {
        tDE=request.getParameter("ticketDescription");

        ticketDescription1 = tDE;

    }

    public String getTicketDescription(){

        return ticketDescription1;

    }

    public void setTicketDate(HttpServletRequest request,
            HttpServletResponse response, String tDA) {
        tDA=request.getParameter("ticketDate");

        ticketDate1 = tDA;

    }

    public String getTicketDate(){

        return ticketDate1;

    }



}//GetTicketInfo

WriteToDatabase

package com.issue.handler;

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

public class WriteToDatabase {



    public void doPost(HttpServletRequest request,
            HttpServletResponse response)
                    throws ServletException, IOException {


        GetTicketInfo myGetTicketInfo = new GetTicketInfo();






        try(    PrintWriter out = response.getWriter()) {
            String host = "jdbc:derby://localhost:1527/school_server";
            String uName = "testuser";
            String uPass = "testuser";
            Connection con = DriverManager.getConnection(host, uName, uPass);



            String query = "INSERT INTO issues (ticketID, ticketOwner, ticketTitle, ticketHandler, ticketCategory, ticketDescription, ticketDate)"+ "VALUES(?,?,?,?,?,?,?)";

            PreparedStatement preparedStmt = con.prepareStatement (query);


            preparedStmt.setString(1,myGetTicketInfo.getTicketID());
            preparedStmt.setString(2,myGetTicketInfo.getTicketOwner());
            preparedStmt.setString(3,myGetTicketInfo.getTicketTitle());
            preparedStmt.setString(4,myGetTicketInfo.getTicketHandler());
            preparedStmt.setString(5,myGetTicketInfo.getTicketCategory());  
            preparedStmt.setString(6,myGetTicketInfo.getTicketDescription());
            preparedStmt.setString(7,myGetTicketInfo.getTicketDescription());

            preparedStmt.execute();

        }catch (Exception e) {
            System.err.println("Got an exception!");
            System.err.println(e.getMessage());}



    } 


}

索引

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Issue Handler</title>
</head>
<body>
<h1>Issue Handler</h1>

<FORM ACTION="issueHandler" method="get">
  Ticket ID:
  <INPUT TYPE="TEXT" NAME="ticketID" VALUE=""><BR>

  Ticket Owner:
  <INPUT TYPE="TEXT" NAME="ticketOwner" VALUE=""><BR>

  Ticket Title:
  <INPUT TYPE="TEXT" NAME="ticketTitle" VALUE=""><BR>

  Ticket Handler:
  <INPUT TYPE="TEXT" NAME="ticketHandler" VALUE=""><BR>

  Ticket Category:
  <INPUT TYPE="TEXT" NAME="ticketCategory" VALUE=""><BR>

  Ticket Description:
  <INPUT TYPE="TEXT" NAME="ticketDescription" VALUE=""><BR>

  Ticket Date:
  <INPUT TYPE="TEXT" NAME="ticketDate" VALUE=""><BR>



    <INPUT TYPE="SUBMIT" VALUE="Register Ticket">
</FORM>

</body>
</html>

的web.xml

<web-app 
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">
  <display-name>Issue Handler</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>  
  </welcome-file-list>


</web-app>

Answer 1

您尚未提供HttpServlet#doGet(HttpServletRequest, HttpServletResponse)的覆盖。这是Servlet容器使用的方法。

您已提供

public void doGet(HttpServletRequest request,
        HttpServletResponse response, String tID) {
    tID=request.getParameter("ticketID");
    ticketID1=tID;

}

这是一种完全不相关的方法。

提示：使用@Override注释您认为自己覆盖的方法。

此URL，状态405不支持HTTP方法GET

1 个答案: