/* JfMJF[Mb
**SiteFileFetch.java XM$GQn]B
*/ u=%y
package NetFox; v{o? #Sk1
import java.io.*; g^jJ8k,7(
import java.net.*; ~]&B>q
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public class SiteFileFetch extends Thread { `aIG;@Z
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SiteInfoBean siteInfoBean = null; //文件信息Bean 6#E7!-u(-
long[] nStartPos; //开始位置 yr5NRs
long[] nEndPos; //结束位置 aVP5%
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ,(P %z.P@
long nFileLength; //文件长度 *%X.ym'
boolean bFirst = true; //是否第一次取文件 T8U[xu.>
boolean bStop = false; //停止标志
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File tmpFile; //文件下载的临时信息 S/VA~,KCe;
DataOutputStream output; //输出到文件的输出流 Q\|18wkW
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Lx%:t YZ
public SiteFileFetch(SiteInfoBean bean) throws IOException HcA[QBh
{ [<yz)<<
siteInfoBean = bean; PB+\jj
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 5C B%=iL{
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); mbyih+amCr
if(tmpFile.exists ()) ;Z*'D}
{ (-\]A|
bFirst = false; PcB{=L
read_nPos(); QWw"K$l
} ;u,rtEMy;
else ojoxXly`
{ p5-<P?B
nStartPos = new long[bean.getNSplitter()];
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nEndPos = new long[bean.getNSplitter()]; pw3(t
} S;8. yj-
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} t@)my[ !
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public void run() r{S=Z~J
{ 4:U0f;Fs
//获得文件长度 dKm`14f]@G
//分割文件 Jn*Nao_)
//实例FileSplitterFetch E67XPvo1+@
//启动FileSplitterFetch线程 i:d`{kJ|[
//等待子线程返回 ,Aj }]h\L
try{ wu 2:'y>n
if(bFirst) #EG?9T
{ E_3r[1l
nFileLength = getFileSize(); n'?4.tb
if(nFileLength == -1) "U{,U`@?
{ r1G8]a gO
System.err.println("File Length is not known!"); 4\ FP
} |'<vrn
else if(nFileLength == -2) xl8#=qmCD
{ y\#o2PVmY
System.err.println("File is not access!"); nhewDDu
} j&CZ=?K^c
else q`^3ov^</
{ WYLX?x
for(int i=0;i<nStartPos.length;i++) >)^NJ2Fd
{ <Y>3
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ,eXFN?CB
} (@q3^)I4
for(int i=0;i<nEndPos.length-1;i++) )[jy[[K(
{ g/#~N~&
nEndPos = nStartPos[i+1]; YBvd
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} o@3B(j;J`
nEndPos[nEndPos.length-1] = nFileLength; /UHp [yod
} vLDi ;
} 43L|QFo
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//启动子线程 TKOP;[1h
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 1Nj=B_T
for(int i=0;i<nStartPos.length;i++) f=m/
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{ o?wt$j-
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), l3p3tT3+
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), kOipH |.x
nStartPos,nEndPos,i); dE [Ol
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2.f|2:I
fileSplitterFetch.start(); 9"ugz^uKt
} AS|Rd+.
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), y]'CXCml)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); dIJGB==
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Gw{+xz KJ
nEndPos = " + nFileLength); C3}Aq8$6
// fileSplitterFetch[nPos.length-1].start(); yp+F<5o
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//等待子线程结束 dB3N%pB^
//int count = 0; %S`ik!K"I
//是否结束while循环 7Z0/(V.-
boolean breakWhile = false; }g{_AiP
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while(!bStop) JIxiklk
{ %[Zz0|A
write_nPos(); lzDdD3Ouc
Utility.sleep(500); ]"sRS`0+
breakWhile = true; v[&'k\
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for(int i=0;i<nStartPos.length;i++) _whF^g8
{ |<(t}}X
if(!fileSplitterFetch.bDownOver) XLb0
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{ tjxvN 4l
breakWhile = false; C:GvP>
break; fxtxu?A>
} o56kp3b)b
} Ae49n4J
if(breakWhile) I4ilR$jg
break; Y Pszk5hn
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//count++; O]qPmEj
//if(count>4) /9_#U#vhY
// siteStop(); 2B` 8eb
} +< KNY
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System.err.println("文件下载结束!"); hYb9`0G"2
} C`4gsqD;Z
catch(Exception e){e.printStackTrace ();} .pvxh|V
} <xlm
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//获得文件长度 [5Y<7DS
public long getFileSize() <&U!N'CE
{ O<GF>
int nFileLength = -1; O
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try{ Km*<Kfcz
URL url = new URL(siteInfoBean.getSSiteURL()); lIh[|]
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]yLhJ_^
httpConnection.setRequestProperty("User-Agent","NetFox"); 9=$!gC)
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int responseCode=httpConnection.getResponseCode(); 'msmXX@q
if(responseCode>=400) >IY,be6>P
{ `o
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processErrorCode(responseCode); / Z!i;@Wf
return -2; //-2 represent access is error D$nK`r
}
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String sHeader; <zfKC
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for(int i=1;;i++) Ro r2qDF
{ LC-)'Z9}5
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (vQ+e
//Utility.log(in.readLine()); <v$QM;Ff
sHeader=httpConnection.getHeaderFieldKey(i); s, XM9h>P4
if(sHeader!=null) Y8ehmz|g]J
{ H06Bj(Y!
if(sHeader.equals("Content-Length")) G$5m$\K
{ ]W)
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); \+Y!ILOI
break; GDPo`#~
} HFS+QwHW
} jvs[ /
else rAXX}"l6s
break; |Td5l?
} FC}oL"kk
} >n!ni(
catch(IOException e){e.printStackTrace ();} ~HDdO3
catch(Exception e){e.printStackTrace ();} Np)aS[9W
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Utility.log(nFileLength); i&K