昨天下午和今天早上重新对程序进行了一下修改,增加了如下功能:
一、首次运行时会先暂停五秒,然后每24小时运行一次
二、每次运行程序的时候会先清空一次数据库,然后再执行抓取、解析、插入的工作
三、增加了程序30%的注释
四、部分类和主函数之间面向对象的实现得到了改善
五、发布了JSP的WEB页面,WEB页面有两个:Index和detail。Index主要显示数据库city_info中的数据项信息,detail主要通过页面传参的形式通过city_info及weather_info两张表的联合查询,显示出Index页面鼠标点击城市的对应天气信息。每个城市都有自己的id值,这个id值就是对外发布出去的HTTP接口,页面运行结果如以下几个页面的地址所示:
http://localhost:8080/WeatherWeb/ShowDetail.jsp?id=101050301
{"weatherinfo":{"city":"牡丹江","date":2011年12月1日","year":辛卯年","week":星期四","description":天气寒冷,建议着厚羽绒服、毛皮大衣加厚毛衣等隆冬服装。年老体弱者尤其要注意保暖防冻。","temp1":"-7℃~-18℃","winddricetion1":"西风3-4级转微风","windpower1":"3-4级转小于3级 ","temp2":"-6℃~-15℃","winddricetion2":"西北风3-4级转微风","windpower2":"3-4级转小于3级
","temp3":"-6℃~-15℃","winddricetion3":"西南风3-4级转微风","windpower3":"3-4级转小于3级 ","temp4":"-6℃~-16℃","winddricetion4":"西南风3-4级转微风","windpower4":"3-4级转小于3级 ","temp5":"-6℃~-17℃","winddricetion5":"西南风3-4级转微风","windpower5":"3-4级转小于3级"}}
http://localhost:8080/WeatherWeb/ShowDetail.jsp?id=101060301
{"weatherinfo":{"city":"延吉","date":2011年12月1日","year":辛卯年","week":星期四","description":天气寒冷,建议着厚羽绒服、毛皮大衣加厚毛衣等隆冬服装。年老体弱者尤其要注意保暖防冻。","temp1":"-6℃~-17℃","winddricetion1":"西风转东风小于3级","windpower1":"小于3级 ","temp2":"-4℃~-12℃","winddricetion2":"东风转西风小于3级","windpower2":"小于3级
","temp3":"-4℃~-12℃","winddricetion3":"西风3-4级转小于3级","windpower3":"3-4级转小于3级 ","temp4":"-2℃~-13℃","winddricetion4":"西风小于3级","windpower4":"小于3级 ","temp5":"-3℃~-11℃","winddricetion5":"西风小于3级","windpower5":"小于3级"}}
http://localhost:8080/WeatherWeb/ShowDetail.jsp?id=101081000
{"weatherinfo":{"city":"呼伦贝尔","date":2011年12月1日","year":辛卯年","week":星期四","description":天气寒冷,建议着厚羽绒服、毛皮大衣加厚毛衣等隆冬服装。年老体弱者尤其要注意保暖防冻。","temp1":"-17℃~-26℃","winddricetion1":"微风","windpower1":"小于3级 ","temp2":"-11℃~-20℃","winddricetion2":"微风","windpower2":"小于3级
","temp3":"-12℃~-25℃","winddricetion3":"微风","windpower3":"小于3级 ","temp4":"-7℃~-29℃","winddricetion4":"微风","windpower4":"小于3级 ","temp5":"-9℃~-28℃","winddricetion5":"微风","windpower5":"小于3级"}}
六、将数据库中解析出的字段通过拼字符串的方法重新转化为JSON格式对外提供接口
需要改善增加的地方有:
一、程序面向对象的体现不是很好
二、增加历史表,每天自动运行程序时不是使用truncate清空表,而是将历史记录转移至历史表中
三、定时器,改造为每天,比如零点或者六点自动运行
四、放弃JSP,改用SERVLET的方法重新制作WEB端,需要学习WEB开发!
最近的事情也要做个规划:
一、今天周四了,打算利用这周四、五、六、日的业余时间学习制作一下马士兵的BBS项目,然后自己动手改造做一个自己的项目。旨在熟悉WEB开发,前台后台管理员、登陆等等。毕竟以前从未做过WEB开发。
二、 下周利用时间学习制作下马士兵的网上商城项目,然后自己动手也跟着学习制作一个自己的网上商城。
三、SERVLET还是前提啊。。。。需要抓紧学习。
增加的部分代码如下:
主函数定时器实现:
public class TestWeather {
/**
* @param args
*/
public static void main(String[] args) {
Timer tt=new Timer();//设置定时器
TimerTaskMine tk=new TimerTaskMine();
tt.schedule(tk, 1000*5, 1000*3600*24);//程序不关,每次执行先暂停五秒,以后每隔24小时运行一次
}
}
class TimerTaskMine extends TimerTask{
private static GetInfo get;//调用静态方法从GetInfo类中获取网页信息
@Override
public void run() {
//private static ReadJson read;//调用静态方法从ReadJson类中读取文件信息
//private static InputStream inputStream;
/* 主函数 */
//int i = 0;
//Properties可保存在流中或从流中加载。属性列表中每个键及其对应值都是一个字符串
Properties prop = new Properties();
InputStream inputStream = new TestWeather().getClass().getResourceAsStream("/weather_code.properties");
try {
prop.load(inputStream);//从输入流中读取属性列表
// System.out.println(prop.getProperty("101020100"));
Enumeration<?> en = prop.propertyNames();//返回属性列表中所有键的枚举
String obj = "";
// get=new GetInfo();
// get.getInfo("101020100");
TruncateMysql.truncateMysql();//清空数据库数据表内容
System.out.println("truncate over!");
while (en.hasMoreElements()) {//测试此枚举是否包含更多的元素。
obj = (String) en.nextElement();//obj即为weather_code.properties中获得的城市代码
// System.out.println(obj);
// get.getInfo(Integer.parseInt(obj));
get = new GetInfo();
// System.out.println(obj.);
get.getInfo(obj);
// 抓取网页
// get=new GetInfo();
// get.getInfo(obj);
// get=new GetInfo();
// get.getInfo(Integer.parseInt(obj));
}
} catch (IOException e) {
e.printStackTrace();
} finally {
// 关闭IO资源
try {
if (null != inputStream)
{
inputStream.close();
inputStream = null;
}
} catch (IOException e) {
e.printStackTrace();
}
}
System.out.println("helloworld");
}
}
清空表的实现:
public class TruncateMysql {
public static void truncateMysql() {
//将连接和预编译的 SQL语句的对象初始化为0
Statement stmt=null;
Connection conn=null;
try {
Class.forName("com.mysql.jdbc.Driver");//Load the Driver
conn=DriverManager.getConnection("jdbc:mysql://10.1.101.223:3306/weather", "appuser", "opzoon123!");//Connect to the DataBase
stmt=conn.createStatement();
String sql="truncate table weather_info";
stmt.executeUpdate(sql);//Execute the SQL
}catch (ClassNotFoundException e) {
e.printStackTrace();
}catch (SQLException e) {
e.printStackTrace();
}finally {//close
try {//按照顺序先关闭stmt再关闭conn
if(stmt!=null) {
stmt.close();
stmt=null;
}
}catch (SQLException e) {
e.printStackTrace();
}
try {
if(conn!=null) {
conn.close();
conn=null;
}
}catch (SQLException e) {
e.printStackTrace();
}
}
}
JSP主页面实现:
<%@ page language="java" contentType="text/html; charset=gbk"
pageEncoding="gbk"%>
<%@ page import="java.sql.*" %>
<%
Class.forName("com.mysql.jdbc.Driver");
Connection conn=DriverManager.getConnection("jdbc:mysql://10.1.101.223:3306/weather", "appuser", "opzoon123!");
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("select * from city_info");
%>
<!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=gbk">
<title>天气预报发布页主页</title>
</head>
<body>
<table border="1">
<%
while(rs.next()) {
%>
<tr>
<td><%= rs.getInt("id") %></td>
<td><%= rs.getInt("city_id") %></td>
<td><a href="ShowDetail.jsp?id=<%= rs.getInt("city_id") %>"><%= rs.getString("city_name") %></a></td>
<%-- <td><%= rs.getString("weather_date") %></td>
<td><%= rs.getString("weather_year") %></td>
<td><%= rs.getString("weather_week") %></td>
<td><%= rs.getString("weather_temp") %></td>
<td><%= rs.getString("weather_winddriection") %></td>
<td><%= rs.getString("weather_windpower") %></td>
<td><%= rs.getString("weather_desprition") %></td> --%>
</tr>
<%
}
%>
</table>
</body>
<%
rs.close();
stmt.close();
conn.close();
%>
</html>
JSP detail页面的实现
将内容转化为JSON格式
<%@ page language="java" contentType="text/html; charset=gbk"
pageEncoding="gbk"%>
<%@ page import="java.sql.*" %>
<%
String city_id=request.getParameter("id");
Class.forName("com.mysql.jdbc.Driver");
Connection conn=DriverManager.getConnection("jdbc:mysql://10.1.101.223:3306/weather", "appuser", "opzoon123!");
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("select city_name,weather_date,weather_year,weather_week,weather_temp,weather_winddirection,weather_windpower,weather_description from city_info,weather_info where city_info.city_id=weather_info.city_id and city_info.city_id='"+city_id+"'");
%>
<%
boolean flag = true;
int i=0;
int j=0;
int k=0;
int m=0;
while(rs.next()) {
%>
<%if(flag){ %>{"weatherinfo":{"city":"<%= rs.getString("city_name") %>","date":<%= rs.getString("weather_date") %>","year":<%= rs.getString("weather_year") %>","week":<%= rs.getString("weather_week") %>","description":<%= rs.getString("weather_description") %><%
flag = false;
} %>","temp<%++i;out.print(i);%>":"<%= rs.getString("weather_temp")%>","winddricetion<%++j;out.print(j);%>":"<%= rs.getString("weather_winddirection")%>","windpower<%++k;out.print(k);%>":"<%= rs.getString("weather_windpower")%><%}%>"}}
<%
rs.close();
stmt.close();
conn.close();
%>