下载http://2048.malash.net的图片

gameurl.txt

http://2048.malash.net/jiaoutiancheng

ImageDownloader.groovy

import org.codehaus.groovy.runtime.StringBufferWriter;

def downloadSingleImage(String imageUrl, String savePath) {
	try {
		URL url = new URL(imageUrl);
		HttpURLConnection connection = (HttpURLConnection) url.openConnection();
		DataInputStream is = new DataInputStream(connection.getInputStream());
		FileOutputStream fos=new FileOutputStream(savePath)
		DataOutputStream os = new DataOutputStream(fos);
		byte[] buffer = new byte[4096];
		int count = 0;
		while ((count = is.read(buffer)) > 0) {
			os.write(buffer, 0, count);
		}
		os.close();
		is.close();
		connection.disconnect();
		return true;
	} catch (Exception e) {
		e.printStackTrace();
		return false;
	}
}
def getRemoteText(String remoteUrl)  {
	try {
		URL url = new URL(remoteUrl);
		HttpURLConnection connection = (HttpURLConnection) url.openConnection();
		BufferedReader is = new BufferedReader(new InputStreamReader(connection.getInputStream()));
		StringBuffer buffer = new StringBuffer();
		String line = "";
		while ((line = is.readLine()) != null){
			buffer.append(line+"\n");
		}
		is.close();
		connection.disconnect();
		return buffer.toString();
	} catch (Exception e) {
		e.printStackTrace();
		return null;
	}
}
def downloadImages(styleCssUrl,saveFolderPath){
	//	def styleCssUrl="http://2048.malash.net/custom/style.css?jiaoutiancheng"
	def text=getRemoteText(styleCssUrl)
	def pattern= /\/upload\/.*png/
	def matcher= text=~pattern
	def host="http://2048.malash.net"
	matcher.eachWithIndex { element, i ->
		def fileNamePreffix="cell_rectangle_"
		def number=Math.pow(2, i+1) as int
		def fileName= "${fileNamePreffix}${number}.png"
		def imageUrl="${host}${element}"
		def savePath="${saveFolderPath}${File.separator}${fileName}"
		new File(saveFolderPath).mkdirs()
		downloadSingleImage(imageUrl,savePath)
		println savePath
	}
}

def parseStyleCssUrl(String gameUrl){
	def gameName= gameUrl.substring(1+gameUrl.lastIndexOf("/"))
	def styleCssUrl="http://2048.malash.net/custom/style.css?${gameName}"
}

// command line interface builder
def cli = new CliBuilder()
cli.h( longOpt: 'help', required: false, 'Show usage information' )
cli.u( longOpt: 'url', argName: 'url', required: true, args: 1, '2048 game url (e.g. http://2048.malash.net/jiaoutiancheng)' )
cli.o( longOpt: 'outdir', argName: 'outdir', required: true, args: 1, 'Image saved directory path (e.g. D:\\\\drawable-mdpi)' )

def opt = cli.parse(args)
if (!opt) { return }
if (opt.h) {
	cli.usage();
	return
}

def styleCssUrl
def saveDir
if(opt.u) {
	println 'you use option -u, value:'+opt.u
	styleCssUrl=parseStyleCssUrl(opt.u)
}
if(opt.o) {
	println 'you use option -o, value:'+opt.o
	saveDir=opt.o
}
downloadImages(styleCssUrl,saveDir)

下载2048图片.bat

@echo off
set appInfoFile=%~dp0gameurl.txt
set url=
set saveDir=%~dp0drawable-mdpi
for /f "tokens=1 delims==" %%i in (%appInfoFile%) do (
	set url=%%i
)
groovy ImageDownloader -u %url% -o %saveDir%
pause