/* 2^aTW`>L
**SiteFileFetch.java BSY#xe V
*/ -iHhpD9"X
package NetFox; .%A2
import java.io.*; YovY0nO
import java.net.*; K/-D 5U
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public class SiteFileFetch extends Thread { 96avgyc
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SiteInfoBean siteInfoBean = null; //文件信息Bean 0)!zhO_}
long[] nStartPos; //开始位置
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long[] nEndPos; //结束位置 [B`P]}gL:
FileSplitterFetch[] fileSplitterFetch; //子线程对象 . $YF|v[=
long nFileLength; //文件长度 5nAF =Bj
boolean bFirst = true; //是否第一次取文件 17oxD
boolean bStop = false; //停止标志 #7h fEAk
File tmpFile; //文件下载的临时信息 Ui!|!V-
DataOutputStream output; //输出到文件的输出流 nh)R
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) I >Q,]S1h
public SiteFileFetch(SiteInfoBean bean) throws IOException dy?|Q33Y"
{ :j<JZs>`R
siteInfoBean = bean; Q0\5j<'e
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (t$/G3E
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Po.BcytM
if(tmpFile.exists ()) oH0F9*+W
{ Y26l,XIV
bFirst = false; z,YUguc|
read_nPos();
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} z %E!tB2o
else }yDq\5s
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nStartPos = new long[bean.getNSplitter()]; ^!_7L4&y
nEndPos = new long[bean.getNSplitter()]; arVf"3a
} .MARF
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} 6RQCKN)
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public void run() n4T2'e
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//获得文件长度 DeQ'U!?+N
//分割文件 VQjFEJ
//实例FileSplitterFetch 6v O)s!b
//启动FileSplitterFetch线程 6@;L$QYY-V
//等待子线程返回 N%|Vzc
try{ lv_%
if(bFirst) }.V0SM6
{ ,h.Jfo54,
nFileLength = getFileSize(); 8!Mzr1:
if(nFileLength == -1) `yXx[deY
{ {&u7kWD|
System.err.println("File Length is not known!"); !_H8Q}a
} =k<4mlok^
else if(nFileLength == -2) 3nC#$L-
{ '#
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System.err.println("File is not access!"); AYu'ptDNr
} AnE_<sPA
else ^
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{ -L3
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for(int i=0;i<nStartPos.length;i++) Z6([/n
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); To{G#QEgG
} 4\SBf\ c
for(int i=0;i<nEndPos.length-1;i++) 5J\|gZQF
{ !^bB/e
nEndPos = nStartPos[i+1]; )bXx9,VL
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nEndPos[nEndPos.length-1] = nFileLength; 5QFXj)hR+4
} E(3+o\w
} \R>5F\ 0
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//启动子线程 !0csNg!
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Q'Kik5I
for(int i=0;i<nStartPos.length;i++) &J/4J
{ H^PqYLjN
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L8w76|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), iraRB~
nStartPos,nEndPos,i); ~eV!!38
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); )\D40,p
fileSplitterFetch.start(); &;h~JS=
} BXK::M+
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !k= 0X\5L
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); V3A>Ag+^~
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", JGO$4DK-1
nEndPos = " + nFileLength); @FdCbPl$
// fileSplitterFetch[nPos.length-1].start(); q>|[JJ*6_N
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//等待子线程结束 Gz[ymj)5
//int count = 0; q4.dLU,1
//是否结束while循环 FH`'1iVH
boolean breakWhile = false; o&XMgY~
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while(!bStop) D"x$^6`c}
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write_nPos(); 0nD=|W\@{
Utility.sleep(500); X#kjt)W
breakWhile = true; oLqbR?
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for(int i=0;i<nStartPos.length;i++) Z?~d']XD
{ R0hctT1j
if(!fileSplitterFetch.bDownOver) 3b?OW7H
{ |DFvZ6}
breakWhile = false; ]Ic?:lKN
break; -wfRR>)d
} 3?*M{Y|
} d(DX(xg
if(breakWhile) >: W-C{%
break; Vh#Mp!
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//count++; NO+
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//if(count>4) N7~)qqb
// siteStop(); .W@(nQ-<
} "'F;lzq
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System.err.println("文件下载结束!"); X@yr$3vC
} da00p-U
catch(Exception e){e.printStackTrace ();} 1~R$$P11[9
} @Ge>i5q
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//获得文件长度 ;Y@!:p-H
public long getFileSize() $/, BJ/9
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int nFileLength = -1; %su}Ru
try{ O/DAf|X|
URL url = new URL(siteInfoBean.getSSiteURL()); Y3P.|
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `\/toddUh[
httpConnection.setRequestProperty("User-Agent","NetFox"); %K%^ ]{
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int responseCode=httpConnection.getResponseCode(); [:nx);\
if(responseCode>=400) %_b^!FR
{ UK"}}nO@e
processErrorCode(responseCode); 2<[eD`u
return -2; //-2 represent access is error d`9W
} aJ5H3X}Y
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String sHeader; CYPazOfj
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