package com.wgtgt;

import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.net.HttpURLConnection;

import com.wgtgt.utils.MutilThreadUtil;

public class Main {

	/**
	 * 程序入口
	 * 请修改下载文件的地址与文件的保存地址
	 * 下载完需要手动合并文件，请启动com.wgtgt.join.Main
	 * @param args
	 * @author 冰水华川 QQ757225051
	 */
	public static void main(String[] args) {
		String path="http://127.0.0.1:8080/duoxiancheng/workspace.zip";
		//String fullName="C:/Users/Administrator/Desktop/temp";
		String tempFolder="C:/Users/Administrator/Desktop/temp";
		int countThread=5;
		download(path,countThread,tempFolder);

	}

	private static void download(String path,int countThread,
			String tempFolder) {
		File tempFolderDir=new File(tempFolder);
		if(!tempFolderDir.exists()){
			tempFolderDir.mkdirs();
		}
		try {
			URL url=new URL(path);
			HttpURLConnection conn=(HttpURLConnection)url.openConnection();
			conn.setConnectTimeout(5000);
			conn.setRequestMethod("POST");
			int code=conn.getResponseCode();
			//System.out.println(code);
			if(code==200){
				int fileLength=conn.getContentLength();
				int startIndex;
				int endIndex;
				int threadId;
				int[][]nums=MutilThreadUtil.split(fileLength, countThread);
				for (int i = 0; i < nums.length; i++) {
					threadId=i;
					startIndex=nums[i][0];
					endIndex=nums[i][1];
					new DownLoadThread(path,tempFolder,startIndex,endIndex,threadId).start();
					System.out.println(startIndex+","+endIndex);
				}			
			}
		} catch (MalformedURLException e) {
			e.printStackTrace();
		} catch (ProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		
	}

}