/* RB@gSHOc?
**SiteFileFetch.java 2]KPW*V
*/ :D7!6}%
package NetFox; U/lra&P
import java.io.*; Y'":OW#oN
import java.net.*; DdW8~yI&
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public class SiteFileFetch extends Thread { ~DS9{Y
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SiteInfoBean siteInfoBean = null; //文件信息Bean !I
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long[] nStartPos; //开始位置 I!@`_Q9N
long[] nEndPos; //结束位置 (8/xSOZ[
FileSplitterFetch[] fileSplitterFetch; //子线程对象 |W[rywxx
long nFileLength; //文件长度 J@-9{<
boolean bFirst = true; //是否第一次取文件 e/%YruzS
boolean bStop = false; //停止标志 rx)Q]
File tmpFile; //文件下载的临时信息 -B! TA0=oJ
DataOutputStream output; //输出到文件的输出流 k18V4ATE]
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) WWzns[$f
public SiteFileFetch(SiteInfoBean bean) throws IOException oMf h|B
{ )^xmy6k
siteInfoBean = bean; 1a4 $.
{
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); !0_Y@>2
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); q&x#S_!
if(tmpFile.exists ()) p{GDW_
{ FV,SA3
bFirst = false; mjc:0hH
read_nPos(); 09i[2n;O
} 7guxkN#
else Unk+@$E&
{ &?pAt30K:
nStartPos = new long[bean.getNSplitter()]; bm|8Jbsb&
nEndPos = new long[bean.getNSplitter()]; NsK >UJ'
} *]u/,wCB
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} =,9'O/br
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public void run() o?\Pw9Y
{ l^Z~^.{y
//获得文件长度 $RO=r90o
//分割文件 gDIB'Y
//实例FileSplitterFetch fR{7780WZ
//启动FileSplitterFetch线程 < ,n4|z)
//等待子线程返回 WVFy Zp B
try{ }7^*%$
if(bFirst) jR:Fih-}
{ (CwaOm{g
nFileLength = getFileSize(); an@Ue7
if(nFileLength == -1) 4\iQ%fb
{ Wb$bCR#?<
System.err.println("File Length is not known!"); `UPmr50Wq
} ;#
else if(nFileLength == -2) eZo%q,L
{ ObnB6ShKi
System.err.println("File is not access!"); \`&fr+x
} b9jm=U
else wVX0!y6
{ ->UrWW^
for(int i=0;i<nStartPos.length;i++) s4*,ocyBP
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); NmXTk+,L#
} oyY,uB.|
for(int i=0;i<nEndPos.length-1;i++) cgAcAcmY
{ }P#gXG
nEndPos = nStartPos[i+1]; DO;
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} 0>Nq$/!
nEndPos[nEndPos.length-1] = nFileLength; iddT.
} $cedO']
} xR3A4m
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//启动子线程 HF:PF"|3
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Qw+">
for(int i=0;i<nStartPos.length;i++) J.(_c'
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{ 4)z](e$
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Q2uE_w`B
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), V2X(f6v
nStartPos,nEndPos,i); 7y3; F7V
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *!kg@ _0K
fileSplitterFetch.start(); sa($3`d
} *bK@ A2`
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,#6\:i
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); /zM7G?y
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 0v?,:]A0E
nEndPos = " + nFileLength); ,v+SD\7|
// fileSplitterFetch[nPos.length-1].start(); gf@Dy6<
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//等待子线程结束 <Lt$qV-#
//int count = 0; W\ckt]'
//是否结束while循环 iD~s,
boolean breakWhile = false; IYFA>*Es
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while(!bStop) n1|%xQBU@
{ kW9STN
write_nPos(); bYfcn]N
Utility.sleep(500); A
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breakWhile = true; qA42f83
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for(int i=0;i<nStartPos.length;i++) bhRpYP%x
{ [F$3mzx
if(!fileSplitterFetch.bDownOver) -JK+{<
{ rm7UFMCR6i
breakWhile = false; ORO~(%-(e
break; 4{_5z7ody
} RXDk8)^
} w,&RHQB
if(breakWhile) N'StT$(
break; TBzM~y
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//count++; R;%iu0
//if(count>4) sq%f%?(V
// siteStop(); f]EHDcC3X
} sQkP@Y
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System.err.println("文件下载结束!"); /i<g>*82
} [3s~Z8
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catch(Exception e){e.printStackTrace ();} &1&*(oi]X
} Wd7*sa3T
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//获得文件长度 Ez)Go6Q
public long getFileSize() .IqS}Rh
{ A U](pXK;
int nFileLength = -1; B?]^}r
try{ GZ1>]HB>r^
URL url = new URL(siteInfoBean.getSSiteURL()); n1QO/1}
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); b#b#r
httpConnection.setRequestProperty("User-Agent","NetFox"); fu`oDi
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int responseCode=httpConnection.getResponseCode(); sG3%~
if(responseCode>=400) ms?h/*E<H
{ ]k hY8it
processErrorCode(responseCode); }*%%GPJ
return -2; //-2 represent access is error 09Fr1PL
} 7-^d4P+|g
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String sHeader; xN5}y3
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for(int i=1;;i++) _jtBU
{ milU,!7J
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); z:w7e0
//Utility.log(in.readLine()); "Kqe4$
sHeader=httpConnection.getHeaderFieldKey(i); NTV0DkX
if(sHeader!=null) %bAv.'C
{ \t}!Dr+yN
if(sHeader.equals("Content-Length")) +iXA|L9=
{ <