環境：eclipse Mars
1、建立Dynamic web
2、建立jsp頁面，編碼：
<%@page import="com.kuaiya.query.process.QueryProcess"%><%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="UTF-8"%><!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=utf-8" ><title>hive查詢語句</title></head><body><form action="QueryProcess" ><lable>查詢語句:</lable><p><textarea name="sql" cols="50" rows="7" style="width:1000px; height:300px;"></textarea><p><input type="submit" name="query" value="提交"></p></form></body></html>
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 stubdoPost(request, response);}/** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {// TODO Auto-generated method stubString 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 blocke.printStackTrace();}}}}
注意：在jsp需要添加
<form action="QueryProcess" >
</form>否則啟動並執行介面按鈕點擊無法觸發servlet中的doPost函數。
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