/* 6BbGA*%{
**SiteFileFetch.java ;=;
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*/ yt=3sq
package NetFox; 7gvnl~C(
import java.io.*; SVs_dG$
import java.net.*; 6NM:DI\%
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public class SiteFileFetch extends Thread { 2Mvrey)
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SiteInfoBean siteInfoBean = null; //文件信息Bean n;+LH9
long[] nStartPos; //开始位置 Hmd]
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long[] nEndPos; //结束位置 =Og)q$AL
FileSplitterFetch[] fileSplitterFetch; //子线程对象 B43HNs
long nFileLength; //文件长度 _%!c+f7
boolean bFirst = true; //是否第一次取文件 -Rd/Gx
boolean bStop = false; //停止标志 W;L7SF g)
File tmpFile; //文件下载的临时信息 >
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DataOutputStream output; //输出到文件的输出流 wq(7|!Eix
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ],FMwCI
public SiteFileFetch(SiteInfoBean bean) throws IOException 9~mh@Kgv
{ JedmaY06=
siteInfoBean = bean; L>9V&\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 8WbgSY`
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); f'-i o<.
if(tmpFile.exists ()) aM2l2
{ ;q:zT\A
bFirst = false; $M lW4&a|
read_nPos(); dWUm\t'#
} "UGY2skf;
else _w/EP
{ D!NQ~'.a=2
nStartPos = new long[bean.getNSplitter()]; mdmvT~`
nEndPos = new long[bean.getNSplitter()]; I^UC&5dC
} ^~@U]
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public void run() Hl/
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{ BuWHX>H
//获得文件长度 C8e
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//分割文件 V=qwwYz~
//实例FileSplitterFetch K[Kh&`T
//启动FileSplitterFetch线程 &7b|4a8B%
//等待子线程返回 Xg
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try{ !\i\}feb
if(bFirst) {7;8#.S72
{ UXugRk%d
nFileLength = getFileSize(); GCX G/k?w:
if(nFileLength == -1) E4W -hq~
{ 2FF4W54I
System.err.println("File Length is not known!"); 8:>1F,
} ,^;)<[
else if(nFileLength == -2) V9(@Y
{ e2ilB),
System.err.println("File is not access!"); feNdMR7eM
} zj`v?#ET
else 7_Z#m (
{ F\AX:
for(int i=0;i<nStartPos.length;i++) &nkW1Ner9
{ LbG_ z =A
nStartPos = (long)(i*(nFileLength/nStartPos.length)); qg!|l7e
} ~j5x+yC
for(int i=0;i<nEndPos.length-1;i++) #iWSDy
{ }L3 oR
nEndPos = nStartPos[i+1]; ]Nl=wZ#`
} f3{MvAy[
nEndPos[nEndPos.length-1] = nFileLength; :Jy'#c
} C] 9p5Hs
} U{z9>
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//启动子线程 M^iU;vo
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ryCI>vJz
for(int i=0;i<nStartPos.length;i++) Y$Y_fjd_
{ &)vC;$vD`
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), I1\a[Xe8E
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), T ;vF(
nStartPos,nEndPos,i); GXjfQ~<]
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); C;`XlQG `
fileSplitterFetch.start(); Bj}^\Pc;}
} {>,V\J0p
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !V\Q<So<
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); T
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", t{FlB!jv
nEndPos = " + nFileLength); 92d6U2T4&
// fileSplitterFetch[nPos.length-1].start(); 4Hn`'+b
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//等待子线程结束
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//int count = 0; YoLx>8
//是否结束while循环 D3^7y.u<)
boolean breakWhile = false; :l&V]}:7*
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while(!bStop) tBT<EV{ G
{ C,NxE5?h
write_nPos(); w'fT=v)
Utility.sleep(500); DUe&r,(4O
breakWhile = true; E)7F\ w
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for(int i=0;i<nStartPos.length;i++) $w0lrh[+
{ YJ/zU52JK~
if(!fileSplitterFetch.bDownOver) oY|,GvCnK
{ f7~9|w&
breakWhile = false; I,VH=Yn5,
break; 3a 1 u
} 3g~^[&|i
} wTGbd
if(breakWhile) +1!qs,
break; V$icWu
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//count++; o fMY,~w
//if(count>4) PN<C=gAe
// siteStop(); bb`':3%
} aKlUX
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System.err.println("文件下载结束!"); R:AA,^Z
} *" 98L+
catch(Exception e){e.printStackTrace ();} >,gvb5
} b}wC|\s
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//获得文件长度 8kt5KnD2
public long getFileSize() Q33"u/-v
{ %#Z/2<_
int nFileLength = -1; TO*BH^5R
try{ ^o@,3__7Q
URL url = new URL(siteInfoBean.getSSiteURL()); $DC*i-}qFg
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); iy\nio`
httpConnection.setRequestProperty("User-Agent","NetFox"); st&
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int responseCode=httpConnection.getResponseCode(); ^(f4*m6`
if(responseCode>=400) L0]_hxE?
{ tpEI(9>
processErrorCode(responseCode); 5P+t^\
return -2; //-2 represent access is error M9f?q.Bv
} !k(_PM
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String sHeader; J5[~LZKW
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for(int i=1;;i++) qXW})(
{ J.+BD\pa
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); =GBI0&U
//Utility.log(in.readLine()); z6~
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sHeader=httpConnection.getHeaderFieldKey(i); *P!e:Tm)
if(sHeader!=null) 3!o4)yJWx
{ $RwB_F
if(sHeader.equals("Content-Length")) C4#rA.nF|
{ oM1
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Ei3zBS?J)
break; ia{c
} NLe}Jqp
} %=<IGce
else q*AQq=
break; MfBdNdox7
} Y'3}G<'%
} asgF1?r
catch(IOException e){e.printStackTrace ();} ]G}B 0u3
catch(Exception e){e.printStackTrace ();} 's!-80sd
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Utility.log(nFileLength); qxJQPz
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