案例:根据url 获取网络资源A,B,C 将资源A,B,C放在一起生成一个xxx.zip
直接看代码
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream; public class DownUrl {
public static String downloadUrl="http://www.baidu.com/img/baidu_sylogo1.gif";
public static String downloadUrl2="http://www.baidu.com/img/baidu_sylogo1.gif";
public static String downloadUrl3="http://www.baidu.com/img/baidu_sylogo1.gif"; /**
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
downloadZip();
}public static void downloadZip() throws Exception{
long start=System.currentTimeMillis();
String [] urls={downloadUrl,downloadUrl2,downloadUrl3};
ZipOutputStream outStream = new ZipOutputStream(new FileOutputStream("D:/1.zip")); for(String u:urls){
String ext=u.substring(u.lastIndexOf("."), u.length());
String fileName=""+System.currentTimeMillis()+ext;
URL url = new URL(u);
URLConnection c = url.openConnection();
c.connect();
int fileLength=c.getContentLength();
System.out.println("file size:"+fileLength); InputStream is = c.getInputStream(); outStream.putNextEntry(new ZipEntry(fileName)); byte[] buffer=new byte[2048];
int len;
while((len=is.read(buffer))!=-1){
outStream.write(buffer,0,len);
}
//关闭流,省略
}
//关闭流,省略
long end=System.currentTimeMillis();
System.out.println("zip ok ,use time:"+(end-start)+"hao miao "); } }