/* F2oY_mA
**SiteFileFetch.java ,O3"r;
*/ mN3%;$ND7
package NetFox; $L:g7?)k
import java.io.*; :r^i0g|5P
import java.net.*; u33+ ikYv
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public class SiteFileFetch extends Thread { #1u4Hi(x5
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SiteInfoBean siteInfoBean = null; //文件信息Bean =kZPd>&L
long[] nStartPos; //开始位置 U G^6I5
long[] nEndPos; //结束位置 a/_sL(F{
FileSplitterFetch[] fileSplitterFetch; //子线程对象 wvT!NN
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long nFileLength; //文件长度 4w]u: eU
boolean bFirst = true; //是否第一次取文件 +Z)||MR"
boolean bStop = false; //停止标志 W1r- uR
File tmpFile; //文件下载的临时信息 @U5+1Hjc
DataOutputStream output; //输出到文件的输出流 (M.Sl
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) zMtK_ccQ
public SiteFileFetch(SiteInfoBean bean) throws IOException jh\q2E~,`
{ X?4tOsd
siteInfoBean = bean; % OiSuw
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); QE<63|
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); RG:ct{i
if(tmpFile.exists ()) !ybEv| =
{ h5Qxa$Oq
bFirst = false; HOykmx6$
read_nPos(); lP9a*>=a
} :Nc~rOC_
else ",&}vfD4M
{ 1/a*8vuGh
nStartPos = new long[bean.getNSplitter()]; YDjQ&EH
nEndPos = new long[bean.getNSplitter()]; m>zUwGYEu
} us`hR!_
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} l4R:_Z<
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public void run() #ye++.7WK
{ uO7Ti]H
//获得文件长度 -k$rkKHZ(
//分割文件 H[]j6D
//实例FileSplitterFetch ]C)PZZI='
//启动FileSplitterFetch线程 ru'Xet
//等待子线程返回 B S b!{|]
try{ O_F<VV*MFQ
if(bFirst) `Ph4!-6#
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nFileLength = getFileSize(); {r'#(\
if(nFileLength == -1) /Pg66H#RUf
{ 2{+\\.4Evk
System.err.println("File Length is not known!"); J&8l1{gd
} zq{L:.#ha
else if(nFileLength == -2) p+9vSM #
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System.err.println("File is not access!"); 8{Zgvqbb
} Q*mPU=<
else [R
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{ !i)?j@D
for(int i=0;i<nStartPos.length;i++) %0:
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); Z"e|DP`
} >-y'N.l^
for(int i=0;i<nEndPos.length-1;i++) )
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{ .]v8W51Y
nEndPos = nStartPos[i+1]; lpSM p
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nEndPos[nEndPos.length-1] = nFileLength; J]N-^ld\\
} ^BNg^V.
} .f(x9|K^
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//启动子线程 3ufUB^@4v
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 5zfaqt`
for(int i=0;i<nStartPos.length;i++) KS(s<ip|
{ {CQA@p:Y}
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lQ!6n
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Rfa1v*(
nStartPos,nEndPos,i); n~K_|
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Q4c>gds`
fileSplitterFetch.start(); YEVH?`G
} )5&w
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), l)XzU&Sc~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); oWx!
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Y#?Sqm(
nEndPos = " + nFileLength); x8zUGvtQ
// fileSplitterFetch[nPos.length-1].start(); 5<ery~q
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//等待子线程结束 W J^r~*r
//int count = 0; 4\Q ?4ZX
//是否结束while循环 i'`Z$3EF)
boolean breakWhile = false; A5?[j
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while(!bStop) 3(AgUq
{ bX5>qqB]
write_nPos(); 1{nXmtvr
Utility.sleep(500); Y}nE/bmx&9
breakWhile = true; eCk}B$ 2
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for(int i=0;i<nStartPos.length;i++) g%RL9-z
{ e-{k;V7b
if(!fileSplitterFetch.bDownOver) Xv=n+uo
{ HRPTP+
breakWhile = false; +s1mm c
break; Z$HYXm
} w(.k6:e
} 10}\7p8
if(breakWhile) XQlK}AK
break; aSKI%<?xN
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//count++; uN6TV*]:
//if(count>4) Wl::tgU
// siteStop(); P) GBuW
} \t^q@}~0Wz
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System.err.println("文件下载结束!"); mv<z%y?Oj
} gt'0B-;W
catch(Exception e){e.printStackTrace ();} i(L;1 `
} obaJT"1
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//获得文件长度 X`^9a5<"
public long getFileSize() XP6R$0yN
{ ]}KmT"vA
int nFileLength = -1; l_+s$c
try{ [y=k}W}z
URL url = new URL(siteInfoBean.getSSiteURL()); .w[]Q;K_[)
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4wBMBCJ;P
httpConnection.setRequestProperty("User-Agent","NetFox"); )Q6R6xW
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int responseCode=httpConnection.getResponseCode(); 5XA6IL|/l
if(responseCode>=400) )}n`MRDB
{ J%3S3C2*m
processErrorCode(responseCode); tC-(GDGy5
return -2; //-2 represent access is error u -CY-
} . (Q;EF`_U
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String sHeader; m{gt(n
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for(int i=1;;i++) ]W-:-.prh
{ Zpl?zI
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); & UL(r
//Utility.log(in.readLine()); [
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sHeader=httpConnection.getHeaderFieldKey(i); ZZzf+F)T
if(sHeader!=null) }c%QF
{ :6N{~ [:4
if(sHeader.equals("Content-Length")) H:y.7
{ ?<xGO@b
.
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); L;E9"7Jo
break; QZt/Rm>W0
} 2/qfK+a
} ]}~*uT}>
else i nF&Pv