/* z
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**SiteFileFetch.java etPb^$
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package NetFox; k7 0o=}
import java.io.*; OjUZ-_J
import java.net.*; c5 ($*tTT
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public class SiteFileFetch extends Thread { G/w&yd4
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SiteInfoBean siteInfoBean = null; //文件信息Bean W6d[v/+K+
long[] nStartPos; //开始位置 \}:&Hl+
long[] nEndPos; //结束位置 ?0U.1N
FileSplitterFetch[] fileSplitterFetch; //子线程对象 3%g\)Cs
long nFileLength; //文件长度 bm &$wf
boolean bFirst = true; //是否第一次取文件 L~,x~sLd
boolean bStop = false; //停止标志 P{'T9U|O-
File tmpFile; //文件下载的临时信息 p\7(`0?8VN
DataOutputStream output; //输出到文件的输出流 N<e=!LV
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) zB8 @Wl
public SiteFileFetch(SiteInfoBean bean) throws IOException " ^t3VjN
{ aBH!K
siteInfoBean = bean; &at^~o
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); jlf.~vt
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); xUiSAKrcM
if(tmpFile.exists ()) 4490l"
{ &Ow[
bFirst = false; z/B[quSio
read_nPos(); KKPQ[3g
} Y6>@zznk
else #LGAvFA*_F
{ fO;#;p.
nStartPos = new long[bean.getNSplitter()]; q13bV
nEndPos = new long[bean.getNSplitter()]; fG+/p 0sJ?
} Q*W`mFul
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} ?gp:uxq,.
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public void run() pCE,l'Xa
{ K>"]*#aBv
//获得文件长度 'Mfn:n+
//分割文件 7)2Co[t
//实例FileSplitterFetch u9TiEEof3
//启动FileSplitterFetch线程 r34q9NFT5
//等待子线程返回 o@&Hc bN^
try{ Rh[%UNl
if(bFirst) w:|BQ,
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nFileLength = getFileSize(); dB{VY+!
if(nFileLength == -1) :y>$N(.8f
{ 1Qc>A8SU
System.err.println("File Length is not known!"); -3z$~
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else if(nFileLength == -2) ?89K
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{ yX-h|Cr"
System.err.println("File is not access!"); bJ~@
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} p\"WX
else BIBBp=+
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for(int i=0;i<nStartPos.length;i++) B
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); sX8?U,u
} 4
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for(int i=0;i<nEndPos.length-1;i++) #@i1jZ
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nEndPos = nStartPos[i+1]; STr&"9c
} Id<3'ky<N
nEndPos[nEndPos.length-1] = nFileLength; {JJq/[j
} VGHy|5K$
} +d$l1j
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//启动子线程 e=8z,.Xk
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; _&U5 u
for(int i=0;i<nStartPos.length;i++) BEm~o#D
{ ;;*'<\lP.j
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @CxXkR
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 2l8TX #K
nStartPos,nEndPos,i); Ykt{]#
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ",qcqG(
fileSplitterFetch.start(); b8>2Y'X
} JfrPK/Vn
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !6yyX}%o
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 'ot,6@~x>
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", OYj4G?c
nEndPos = " + nFileLength); viLK\>>
// fileSplitterFetch[nPos.length-1].start(); Ot^<:\<`G
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//等待子线程结束 4!I;U>b b
//int count = 0; F+lsza
//是否结束while循环 S~Z`?qHWh
boolean breakWhile = false; pE^j Uxk6
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while(!bStop) !,I530eh7
{ aDae0$lc.S
write_nPos(); 2E*k@
Utility.sleep(500); Wg V'T#*
breakWhile = true; ftw@ nQNU
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for(int i=0;i<nStartPos.length;i++) SU {U+
{ B(omD3jzN
if(!fileSplitterFetch.bDownOver) ;'|Mt)\
{ 3hPj;-u
breakWhile = false; }gfs
break; ~@v<B
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} ?)60JWOJ1
} MgP6ki1z
if(breakWhile) nVK`H@5fw
break; Gx$rk<;ZW
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//count++; '(qVA>S
//if(count>4) :kaHvf
// siteStop(); Py3Y*YP
} 0VA$
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System.err.println("文件下载结束!"); S>'S4MJE`
} EE^
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catch(Exception e){e.printStackTrace ();} ckZZ)lW`*
} .ZB/!WiF
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//获得文件长度 }EW@/; kC
public long getFileSize() 9qqzCMrI0e
{ X53TFRxnT
int nFileLength = -1; }`SXUM_sD`
try{ +yh-HYo`
URL url = new URL(siteInfoBean.getSSiteURL()); 9 aE.jpN
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection ();
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httpConnection.setRequestProperty("User-Agent","NetFox"); S!u`V3-s
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int responseCode=httpConnection.getResponseCode(); bhIyq4N
if(responseCode>=400) ^J([w~&
{ Tt0:rQ.
processErrorCode(responseCode); vE9M2[TJA
return -2; //-2 represent access is error jMT];%$[
} *@C4~Zo
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String sHeader; ^w+jPT-n
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for(int i=1;;i++) E
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +hz^( I7
//Utility.log(in.readLine()); )<6zbG
sHeader=httpConnection.getHeaderFieldKey(i); Rv
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if(sHeader!=null) xTnd9'Pk`:
{ f[@M
if(sHeader.equals("Content-Length")) :\0q\2e[<
{ Se
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); i>Cxi ZT
break; ")q{>tV
} ~/@5&