java ÏÂÔØÎļþµÄ·½·¨(2)
×òÌìÔÚдÍêjavaÏÂÔØµÄÎÄÕºó¾ÍÔÚ½ñÌì·¢ÏÖÁËÒ»¸öÎÊÌ⡣ͨ¹ýÕâ¸öÎÊÌâÒ²·´Ó¦³ö¶ÔHttpURLConnectionÕâ¸öÀ໹²»Á˽⡣³Ã´Ë»ú»áÔÙÌí¼ÓһЩ¶ÔÕâ¸öÀàµÄÁ˽â°É¡£Ê×ÏÈ¿´¿´Ç°ÃæÄǶϴúÂëÔÚÎҵijÌÐòÖгöÏÖÁËʲôÎÊÌ⣺
ÔÚÎҵijÌÐòÖÐÓÐÕâôһ¸öÄ£¿é£¬Í¨¹ý¸ø¶¨µÄurlÏÂÔØµ½Îļþ£¬±£´æµ½±¾µØ¡£¶øÎļþÊÇbinaryÐÎʽµÄ¡£ÀýÈ磺http://abc/li.exe,
ÓÃÏÂÃæ´úÂë»á³öÏÖÒ»¸öÎÊÌ⣬¾ÍÊǵ±Õâ¸öurl±»Öض¨Ïòµ½Ò»¸öÍøÒ³Ê±£¬ÏÂÔØÏÂÀ´µÄ¾ÍÊÇÍøÒ³µÄÄÚÈÝ£º
public static File saveToFiles(String destUrl,String path) throws IOException {
final int BUFFER_SIZE = 4096;
System.out.println("file download url is "+destUrl+" path is"+path+"--------------");
FileOutputStream fos = null;
BufferedInputStream bis = null;
HttpURLConnection httpconn = null;
URL url = null;
byte[] buf = new byte[BUFFER_SIZE];
int size = 0;
if(rc.isUseProxy()){ // ´Ë´¦Îª¶ÁÈ¡ÅäÖÃÎļþµÄÄÚÈÝ£¬È·¶¨ÊÇ·ñʹÓôúÀí
Properties prop = System.getProperties();
//set http proxy addr
prop.setProperty("http.proxyHost", rc.getHttpProxyHost()); &nbs
Ïà¹ØÎĵµ£º
Ãô½Ý¿ª·¢µÄÀíÄîÒѾÁ÷ÐÐÁ˺ܳ¤µÄʱ¼ä£¬ÔÚÃô½Ý¿ª·¢ÖеĿª·¢µü´ú½×¶ÎÖУ¬ÎÒÃÇ¿ÉÒÔͨ¹ýÎå¸ö²½Ö裬À´ÓÐЧµÄÌá¸ßÕû¸öÏîÄ¿µÄ´úÂëÖÊÁ¿¡£
JavaÏîÄ¿¿ª·¢¹ý³ÌÖУ¬ÓÉÓÚ¿ª·¢ÈËÔ±µÄ¾Ñé¡¢Java´úÂë±àдϰ¹ß£¬ÒÔ¼°È±·¦Í³Ò»µÄ±ê×¼ºÍ¹ÜÀíÁ÷³Ì£¬ÍùÍùµ¼ÖÂÕû¸öÏîÄ¿µÄ´úÂëÖÊÁ¿½Ï²î£¬ÄÑÓÚά »¤£¬ÐèÒª½Ï´óµÄ²âÊÔͶÈëºÍÖÜÆÚµÈÎÊÌâ¡£ÕâЩÎÊÌâÔÚÒ»¸öÏ ......
import java.io.File;
import java.io.FileInputStream;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5Util
{
private static char md5Chars[] =
{ '0', '1', '2' ......
JavaÓïÑÔµÄÊäÈëÊä³ö¹¦ÄÜÊÇÊ®·ÖÇ¿´ó¶øÁé»îµÄ£¬ÃÀÖв»×ãµÄÊÇ¿´ÉÏÈ¥ÊäÈëÊä³öµÄ´úÂë²¢²»ÊǺܼò½à£¬ÒòΪÄãÍùÍùÐèÒª°ü×°Ðí¶à²»Í¬µÄ¶ÔÏó¡£ÔÚJavaÀà¿âÖУ¬IO²¿·ÖµÄÄÚÈÝÊǺÜÅÓ´óµÄ£¬ÒòΪËüÉæ¼°µÄÁìÓòºÜ¹ã·º:±ê×¼ÊäÈëÊä³ö£¬ÎļþµÄ²Ù×÷£¬ÍøÂçÉϵÄÊý¾ÝÁ÷£¬×Ö·û´®Á÷£¬¶ÔÏóÁ÷£¬zipÎļþÁ÷....±¾ÎĵÄÄ¿µÄÊÇΪ´ó¼Ò×öÒ»¸ö¼òÒªµÄ½éÉÜ¡£ Á÷ÊÇÒ»¸ ......
µÚÒ»ÖÖ·½Ê½²ÉÓÃjni£º
Java²»ÊÇÍêÃÀµÄ£¬JavaµÄ²»×ã³ýÁËÌåÏÖÔÚÔËÐÐËÙ¶ÈÉÏÒª±È´«Í³µÄC++ÂýÐí¶àÖ®Í⣬JavaÎÞ·¨Ö±½Ó·ÃÎʵ½²Ù×÷ϵͳµ×²ã£¨ÈçϵͳӲ¼þµÈ)£¬Îª´ËJavaʹÓÃnative·½·¨À´À©Õ¹Java³ÌÐòµÄ¹¦ÄÜ¡£
¡¡¡¡¿ÉÒÔ½«native·½·¨±È×÷Java³ÌÐòͬ£Ã³ÌÐòµÄ½Ó¿Ú£¬ÆäʵÏÖ²½Ö裺
1.ÔÚJavaÖÐÉùÃ÷native()·½·¨£¬È»ºó±àÒ룻ÀýÈ磺¡¡public ......
ÎÊÌâÒ»£ºÎÒÉùÃ÷ÁËʲô£¡
String s = "Hello world!";
Ðí¶àÈ˶¼×ö¹ýÕâÑùµÄÊÂÇ飬µ«ÊÇ£¬ÎÒÃǵ½µ×ÉùÃ÷ÁËʲô£¿»Ø´ðͨ³£ÊÇ£ºÒ»¸öString£¬ÄÚÈÝÊÇ“Hello world!”¡£ÕâÑùÄ£ºýµÄ»Ø´ðͨ³£ÊǸÅÄî²»ÇåµÄ¸ùÔ´¡£Èç¹ûҪ׼ȷµÄ»Ø´ð£¬Ò»°ëµÄÈË´ó¸Å»á»Ø´ð´íÎó¡£
Õâ
¸öÓï¾äÉùÃ÷µÄÊÇÒ»¸öÖ¸Ïò¶ÔÏóµÄÒýÓã¬ÃûΪ“s ......