/* rges`&0
**SiteFileFetch.java _ME?o
*/ rh T!8dTk
package NetFox; 74a k|(!
import java.io.*; *
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import java.net.*; WnhH]WY
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public class SiteFileFetch extends Thread { 7-mo\jw<
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SiteInfoBean siteInfoBean = null; //文件信息Bean vy5I#q(k
long[] nStartPos; //开始位置 g{JH5IZ~
long[] nEndPos; //结束位置 [6)vD@
FileSplitterFetch[] fileSplitterFetch; //子线程对象 V o%GO9b;
long nFileLength; //文件长度 = Q"(9[Az
boolean bFirst = true; //是否第一次取文件 O^IS:\JX&
boolean bStop = false; //停止标志 3
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File tmpFile; //文件下载的临时信息 -Fc 9mv(H
DataOutputStream output; //输出到文件的输出流 kfq<M7y
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) USH>`3
public SiteFileFetch(SiteInfoBean bean) throws IOException *_"lXcG.
{ orhzeOi\
siteInfoBean = bean; 0oo_m6ie&
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); m}+_z^@j9
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); lM.k*`$
if(tmpFile.exists ()) hA+;eXy/
{ :@S=0|:j
bFirst = false; 02C;
read_nPos(); A+VzpJ~
} ^+Njz{rpG
else z5W;-sCz
{ J7k=5Fqej;
nStartPos = new long[bean.getNSplitter()]; zwK$ q=-:
nEndPos = new long[bean.getNSplitter()]; Tx(=4ALY
} 7eG@)5Uy
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public void run() 5K00z?kD2V
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//获得文件长度 hroRDD
//分割文件 F8B:P7I
//实例FileSplitterFetch 8},fu3Z
//启动FileSplitterFetch线程 JB HnJm
//等待子线程返回 r6L
try{ !%QbE[Kl>
if(bFirst) Tx/KL%X
{ s"l ^v5
nFileLength = getFileSize(); F>at^6^
if(nFileLength == -1) ]CgZt'h{
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System.err.println("File Length is not known!"); uN6xOq/
} uR82},r$m
else if(nFileLength == -2) to)Pl}9QkK
{ &sGLm~m#
System.err.println("File is not access!"); Zk0? =f?j
} ?{>5IjL)en
else \?AA:U*
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for(int i=0;i<nStartPos.length;i++) HK<oNr.d52
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); 6H:EBj54?
} {=_xze)
for(int i=0;i<nEndPos.length-1;i++) Y4*?QBYA
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nEndPos = nStartPos[i+1]; ? \NT'CG
} E9j(%kQ2
nEndPos[nEndPos.length-1] = nFileLength; j{P3o<l&`
} 0vM,2:kf*
} ;+Mr|vweTC
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//启动子线程 IE&G7\>(yO
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; [q!)Y:|u_>
for(int i=0;i<nStartPos.length;i++) IF3 V5Q
{ _x?S0R1
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m\ /V 0V\
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \>4x7mF!
nStartPos,nEndPos,i); WI54xu1M
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *JVJKqed
fileSplitterFetch.start(); :#UN^ "(m}
} q|e<b
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), qFjnuQ,w
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 92L{be;SY
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8C2!Wwz`J8
nEndPos = " + nFileLength); VB{G%!}
// fileSplitterFetch[nPos.length-1].start(); Fr9_!f
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//等待子线程结束 6}PoBhgSg-
//int count = 0; )>a^%V9
//是否结束while循环 9wv 7HD|
boolean breakWhile = false; ; J8 25CE
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while(!bStop) P87qUC
{ 6Q9S~YYq
write_nPos(); Q |^c5
Utility.sleep(500); b=Y3O
breakWhile = true; )nUTux0K\
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for(int i=0;i<nStartPos.length;i++) )"<:Md$7
{ p\M\mK
if(!fileSplitterFetch.bDownOver) c (0Ez@
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breakWhile = false; 5[$jrG\!
break; >]WQ1E[=
} 5K?%Eo72!=
} +)TOcxF%
if(breakWhile) yy|F6Pq3`
break; AN-;*n<'
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//count++; pJ]i)$M
//if(count>4) 3UQ~U 8
// siteStop(); Fv9n>%W&
} xGymQ|y84
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System.err.println("文件下载结束!"); Hf$LWPL)lM
} KmRxbf
catch(Exception e){e.printStackTrace ();} STgYXA(
} QsH Fk5)
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//获得文件长度 QOY M/1U
public long getFileSize() 8&9'1X5)8_
{ ;yg9{"O
int nFileLength = -1; 2:& [r*
try{ UI.>BZ6}
URL url = new URL(siteInfoBean.getSSiteURL()); uSK<{UT~3
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $WK~|+"{>
httpConnection.setRequestProperty("User-Agent","NetFox"); ~gvw6e*[
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int responseCode=httpConnection.getResponseCode(); m;KD@E!
if(responseCode>=400) 8?&u5
{ .m\' |%
processErrorCode(responseCode); ^{Y9!R*9U*
return -2; //-2 represent access is error 0|_d{/VK4
} >R}p*=J
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String sHeader; ]QAMCu(>
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for(int i=1;;i++) ?_7^MP>
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); seo.1.Da2
//Utility.log(in.readLine()); }~`l!ApD
sHeader=httpConnection.getHeaderFieldKey(i); j-j,0!T~b
if(sHeader!=null) )YP9
{ "kT?9&