/* l]cFqLp
**SiteFileFetch.java .KC++\{HE
*/ |M_UQQAB|
package NetFox; .G^YqJ 4
import java.io.*; J=L5=G7(
import java.net.*; 5?L<N:;J_
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public class SiteFileFetch extends Thread { v@Ox:wl>
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SiteInfoBean siteInfoBean = null; //文件信息Bean &/b~k3{M_
long[] nStartPos; //开始位置 2JFpZU"1
long[] nEndPos; //结束位置 }`"6aM
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Kg$Mx
long nFileLength; //文件长度 ZB&6<uw
boolean bFirst = true; //是否第一次取文件
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boolean bStop = false; //停止标志 # [a*rD%m
File tmpFile; //文件下载的临时信息 :L;a:xSpn=
DataOutputStream output; //输出到文件的输出流 }75e:w[
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) d[35d J7F
public SiteFileFetch(SiteInfoBean bean) throws IOException 05k0n E
{ n(|^SH4$b
siteInfoBean = bean; frQ{iUx
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); E P+J
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); :yjFQ9^?&
if(tmpFile.exists ()) K@#L)VT!
{ *,m;
bFirst = false; Q&V;(L62!
read_nPos(); A9JdU&
} '7@R7w!E4H
else AK#1]i~
{ %[yJ4WL
nStartPos = new long[bean.getNSplitter()]; rD>f|kA?L
nEndPos = new long[bean.getNSplitter()]; X$pJ
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} BSMwdr
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} g4@ lM"|S
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public void run() uH-)y,2&
{ hG:|9Sol,
//获得文件长度 6 _ow%Rx~F
//分割文件 ,u
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//实例FileSplitterFetch 6(e>P)
//启动FileSplitterFetch线程 .%OR3"9@
//等待子线程返回 QVE6We
try{ BX^tR1
if(bFirst) r)6M!_]AW
{ M|[o aanY'
nFileLength = getFileSize(); y|q3Wa
if(nFileLength == -1)
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{ W"3ph6[eW
System.err.println("File Length is not known!"); i2^>vYCsl
} [66!bM&
else if(nFileLength == -2) 0<B$#8
{ C{bgkzr
System.err.println("File is not access!"); F*K_+
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} ^<-+@v*
else {GcO3G#FZ
{ A_#DJJMm
for(int i=0;i<nStartPos.length;i++) >6pf$0
{ I,'k>@w{s
nStartPos = (long)(i*(nFileLength/nStartPos.length)); O<;3M'y\
} tlt*fH$.
for(int i=0;i<nEndPos.length-1;i++) 14'45
{ 9
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nEndPos = nStartPos[i+1]; bD8Gwi=iiu
} 1~QPG\cdIX
nEndPos[nEndPos.length-1] = nFileLength; CC^'@~)?
} ^Js9 s8?$
} [R7Y}k:9U
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//启动子线程 ApXy=?fc
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; XNu^`Ha
for(int i=0;i<nStartPos.length;i++) H1(Uw:V8
{ `%Al>u5
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), e01epVR;
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), r_;Nt
nStartPos,nEndPos,i); m<qJcZk
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); w~?~g<q
fileSplitterFetch.start(); M_w<m
} VEw"
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3J438M.ka
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); f &wb
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Y,e B|
nEndPos = " + nFileLength); fn6J*[`
// fileSplitterFetch[nPos.length-1].start(); A^EE32kbm
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//等待子线程结束 yU}qOgXx
//int count = 0; qXtC^n@x
//是否结束while循环 p >t#@Eu|
boolean breakWhile = false; 7y@Pa&^8
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while(!bStop) 6,9>g0y'NG
{ xDoC(
write_nPos(); _v=SH$O+
Utility.sleep(500); LRG6:&
breakWhile = true;
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for(int i=0;i<nStartPos.length;i++) B[-v[K2
{ |:<f-j7t~
if(!fileSplitterFetch.bDownOver) !|S43i&p
{ tX %5BTv
breakWhile = false; spPNr
break; J@Q7p}
} //<nr\oP
} vv+z'(l
if(breakWhile) 0h\smqm
break; dl@%`E48w
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//count++; D"?fn<2
//if(count>4) }m;,Q9:+m^
// siteStop(); 5VAK:eB
} \(Y\|zC'0$
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System.err.println("文件下载结束!"); $$5aUI:$~$
} aV|hCN~
catch(Exception e){e.printStackTrace ();} {Um)15K
} a (b#
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//获得文件长度 A.F738Zp{Z
public long getFileSize() ?D*/*Gk{
{ DBD%6o>]K
int nFileLength = -1; QYjsDL><
try{ 9:1Q1,-i!-
URL url = new URL(siteInfoBean.getSSiteURL()); K&70{r
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); {~sDYRX
httpConnection.setRequestProperty("User-Agent","NetFox"); ^o1*a&~J@
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int responseCode=httpConnection.getResponseCode(); Dq5j1m.
if(responseCode>=400) $?<Z!*x
{ u TK,&
processErrorCode(responseCode); /1Q(b
return -2; //-2 represent access is error ,\ k(x>oy
} ,5,!es@`b
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String sHeader; G) 7;;
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for(int i=1;;i++) <55g3>X
{ 27"%"P.1
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (Cd\G=PK
//Utility.log(in.readLine()); ?$^2Umt0
sHeader=httpConnection.getHeaderFieldKey(i); -~ Mb
if(sHeader!=null)
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{ cmg^J
if(sHeader.equals("Content-Length")) 6qaQ[XTxf
{ $lIz{ySJv
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); tj4VWJK
break; V=V:SlS9|
} PGBQn#c<