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**SiteFileFetch.java t&}6;z 3
*/ y LM"+.?pL
package NetFox; rMp9jG@3
import java.io.*; /;oqf4MF
import java.net.*; u
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public class SiteFileFetch extends Thread { h{_*oBa
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SiteInfoBean siteInfoBean = null; //文件信息Bean AIZBo@xg
long[] nStartPos; //开始位置 !p[`IWZ
long[] nEndPos; //结束位置 d8OL!Rk
FileSplitterFetch[] fileSplitterFetch; //子线程对象 LM"y\q ]
long nFileLength; //文件长度 ,}J_:\j
boolean bFirst = true; //是否第一次取文件 euQ.ArF
boolean bStop = false; //停止标志 z-,VnhLx
File tmpFile; //文件下载的临时信息 d,9`<1{9
DataOutputStream output; //输出到文件的输出流 8l>CR#%@C
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) s'u(B]E
public SiteFileFetch(SiteInfoBean bean) throws IOException &`Ck
{ X?o(
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siteInfoBean = bean; o2uj =Gnx
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); z$[C#5+2
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >oJkJ$|wU
if(tmpFile.exists ()) TH?9< C-C
{ +sZUJ
bFirst = false; = yXs?y"
read_nPos(); ;t(f1rPyE
} qf8[!5GM
else S$[k Q|Am
{ {{!Y]\2S
nStartPos = new long[bean.getNSplitter()]; rU2iy"L
nEndPos = new long[bean.getNSplitter()]; kWW w<cA
} F
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public void run() .}`hCt08
{ ig_2={Q@
//获得文件长度 :i*JnlvZ
//分割文件 )=^w3y
//实例FileSplitterFetch `<fh+*
//启动FileSplitterFetch线程 9|WV~
//等待子线程返回 ga0'zo9K
try{ Ph,-sR
if(bFirst) PQ U]l"A
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nFileLength = getFileSize(); \2kPq>hu
if(nFileLength == -1) ^g>1U5c
{ ~?Omy8#
System.err.println("File Length is not known!"); <J{'o`{
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else if(nFileLength == -2) vqNsZ 8|`
{ 5#2F1NX
System.err.println("File is not access!"); jC, FG'P
} G|u3UhyB
else BNucc']
{ %NARyz
for(int i=0;i<nStartPos.length;i++) Qt+:4{He
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); 0$P/jt
} buMqF-j
for(int i=0;i<nEndPos.length-1;i++) Q^_/By@
{ C"w
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nEndPos = nStartPos[i+1]; Ru\_dr2yI}
} kQv*eZ~
nEndPos[nEndPos.length-1] = nFileLength; U4,2 br>
} TMVryb
} lmCZ8 j(FF
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//启动子线程 !<\Br
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; my.`k'
for(int i=0;i<nStartPos.length;i++) W WG /k17
{ pW?&J>\6
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }_OM$nzj
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), fI|[Z+"
nStartPos,nEndPos,i); f4('gl9
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^U q
fileSplitterFetch.start(); oFC)
} \5><3*\
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8v92Ng7
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); &tI#T)SSs
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", k|E]YvnfG
nEndPos = " + nFileLength); 0ZI(/r
// fileSplitterFetch[nPos.length-1].start(); !~iGu\y
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//等待子线程结束 -X1X)0v$
//int count = 0; n!ok?=(kQ
//是否结束while循环 9w4sSj`
boolean breakWhile = false; I9y.e++/
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while(!bStop) XhW %,/<
{ Ob<W/-%5tH
write_nPos(); W{"XJt_
Utility.sleep(500); ) g1a'G
breakWhile = true; _}Ps(_5D
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for(int i=0;i<nStartPos.length;i++) -w6
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{ mDMt5(.
if(!fileSplitterFetch.bDownOver) h{iEZ#
{ g /+oZU
breakWhile = false; WE!vSZ3R
break; 'c`jyn
} vK'?:}~
} LXfCmc9|Z
if(breakWhile) 5\4g>5PD
break; =hH.zrI6e
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//count++; ~6[*q~B
//if(count>4) DPDe>3Mi[
// siteStop(); u\e\'\
} zA+@FR?
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System.err.println("文件下载结束!"); tpf7_YP_!-
} 6vy7l(%
catch(Exception e){e.printStackTrace ();} z01>'
} x5si70BKC/
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//获得文件长度 m6n!rRQ^U
public long getFileSize() K\.5h4k
{ ?pGkk=,KB
int nFileLength = -1; 3`V1XE.;
try{ #;tT8[Ewuw
URL url = new URL(siteInfoBean.getSSiteURL()); woOy*)@
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); U bz"rCjq
httpConnection.setRequestProperty("User-Agent","NetFox"); viaJblYj(f
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int responseCode=httpConnection.getResponseCode(); Q=cQLf;/'
if(responseCode>=400) fQLax
{ C;B}3g&
processErrorCode(responseCode); Xa9TS"
return -2; //-2 represent access is error d+L#t
} x;E2~&E
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String sHeader; ?/#}ZZK^
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for(int i=1;;i++) .m4;^S2cO
{ [w\?j,
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); f|7u_f
//Utility.log(in.readLine()); `iShJz96
sHeader=httpConnection.getHeaderFieldKey(i); JC;^--0(z
if(sHeader!=null) u' Qd,
{ #
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if(sHeader.equals("Content-Length")) B5am1y{P#
{ .V'V:;BE%
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); C'mL&
break; H}0dd"
} Oxx^[ju~
} ,w)p"[^b
else ,d,\-x-+/
break; $a;]_ Y
} 'Pltn{iq[
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catch(IOException e){e.printStackTrace ();} HL{$ ^l#v
catch(Exception e){e.printStackTrace ();} r4 dOK] 0
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Utility.log(nFileLength); k!XhFWb
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return nFileLength; &