html调用jsp文件代码,Java动态web--jsp页面调用servlet(doPost)

环境：eclipse Mars

1、新建Dynamic web

2、新建jsp页面，编码：

pageEncoding="UTF-8"%>

hive查询语句

查询语句:

3、新建servlet

package com.kuaiya.query.process;

import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

/**

* Servlet implementation class QueryProcess

*/

@WebServlet("/QueryProcess")

public class QueryProcess extends HttpServlet {

private static final long serialVersionUID = 1L;

/**

* @see HttpServlet#HttpServlet()

*/

public QueryProcess() {

super();

// TODO Auto-generated constructor stub

}

/**

* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)

*/

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

// TODO Auto-generated method stub

doPost(request, response);

}

/**

* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)

*/

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

// TODO Auto-generated method stub

String query = request.getParameter("sql");

String btn = request.getParameter("Query");

if(btn!=null && btn.equals("Query")){

Query.lstSubmit.add(query);

try {

Query.process();

} catch (InterruptedException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

}

}

注意：在jsp需要添加

否则运行的界面按钮点击无法触发servlet中的doPost函数。