/* 84L!r
**SiteFileFetch.java UT[nzbG
*/ @v_E'
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package NetFox; w8:F^{
import java.io.*; 5~k-c Ua
import java.net.*; :}x\&]uC#k
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public class SiteFileFetch extends Thread { udtsq"U_%
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SiteInfoBean siteInfoBean = null; //文件信息Bean l|O^yNS
long[] nStartPos; //开始位置 I9*o[Jp5
long[] nEndPos; //结束位置 z:9
FileSplitterFetch[] fileSplitterFetch; //子线程对象 xou7j
long nFileLength; //文件长度 Dntcv|%u
boolean bFirst = true; //是否第一次取文件 $D5[12X
boolean bStop = false; //停止标志 Na: M1Uhb
File tmpFile; //文件下载的临时信息 -cyJjLL*
DataOutputStream output; //输出到文件的输出流 A>+5~u
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 8B;`9?CI
public SiteFileFetch(SiteInfoBean bean) throws IOException 7p3 ;b"'
{ =bs4*[zq
siteInfoBean = bean; F3jrJ+nJ
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); XOa<R
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &=fBqod
if(tmpFile.exists ()) /eDah3%d
{ R<LW*8
bFirst = false; %_u*5,w
read_nPos(); :i0xer
} a8M.EFa:
else DamLkkoA
{ 0K>rc1dy
nStartPos = new long[bean.getNSplitter()]; 9F0B-aZ
nEndPos = new long[bean.getNSplitter()]; n4YEu\*
} ^T'+dGU`
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} 9;dP7o
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public void run() lnbw-IE!
{ :d/Z&LXD
//获得文件长度 Fdd$Bl.&XS
//分割文件 8"wA8l.
//实例FileSplitterFetch "A__z|sQ
//启动FileSplitterFetch线程 SAs'u"EB
//等待子线程返回 +;#hED;8
try{ .
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if(bFirst)
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{ C JiMg'K
nFileLength = getFileSize(); @^Mn
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if(nFileLength == -1) ",E6)r
{ #:T5_9p
System.err.println("File Length is not known!"); yHQ.EZ~%
} T7m rOp
else if(nFileLength == -2) ^]'p927
{ *-Lnsi^7v
System.err.println("File is not access!"); E1 *\)q
} &gF{<$$
else S)VuT0
{ 5gF}7D@
for(int i=0;i<nStartPos.length;i++) JC{}iG6r+
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); h1fJ`WT6,
} {0QD-b o
for(int i=0;i<nEndPos.length-1;i++) aEXV^5;,pJ
{ \#tr4g~u
nEndPos = nStartPos[i+1]; qfC9 {gu
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nEndPos[nEndPos.length-1] = nFileLength; Y+upZ@Ga
} )%X\5]w`
} wVE"nN#
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//启动子线程 W$gSpZ_7
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; a6WE,4T9
for(int i=0;i<nStartPos.length;i++) 6e |
{ Aplqxvth
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =eac,]31
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Uw61X>y=
nStartPos,nEndPos,i); sf\;|`}
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); P_-zkw
fileSplitterFetch.start(); +hjc~|RK
} Zu%_kpW
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2_r}4)z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); >ID 3oi
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", b%$S6.
nEndPos = " + nFileLength); 4
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// fileSplitterFetch[nPos.length-1].start(); A
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//等待子线程结束 ]Wd{4(b
//int count = 0; 42z9N\ f
//是否结束while循环 ]qV J>
boolean breakWhile = false; y
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while(!bStop) CdZ;ZR
{ &~E=T3
write_nPos(); DT 9i<kl
Utility.sleep(500); C
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breakWhile = true; ^D.B^BR
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for(int i=0;i<nStartPos.length;i++) ~PlwPvWo
{ 5I&^n0h|&
if(!fileSplitterFetch.bDownOver) Iu1P}R>C
{ 9s*Lzi[}
breakWhile = false; E\V>3rse
break; ni%^w(J3Q
} ;"Ot\:0
} @
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if(breakWhile) pY8+;w
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break; ?erDP8
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//count++; ;quGy3
//if(count>4) "9WP^[
// siteStop(); IZ2#jSDn
} U_VD* F4Bv
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System.err.println("文件下载结束!"); Ok:@F/ v
} DJn>. Gd
catch(Exception e){e.printStackTrace ();} V 9<[v?.\
} 7#g C(&\A
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//获得文件长度 Oi7=z?+j
public long getFileSize() ;<&s_C3
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int nFileLength = -1; p!Gf^
try{ ?` `+OH
URL url = new URL(siteInfoBean.getSSiteURL()); OOk53~2id
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 1:>RQPXcWv
httpConnection.setRequestProperty("User-Agent","NetFox"); Q'|cOQX
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int responseCode=httpConnection.getResponseCode(); {M%"z,GL7J
if(responseCode>=400) )>[(HxvfJU
{ d>AVUf<o~
processErrorCode(responseCode); T8Khm O
return -2; //-2 represent access is error a"&Z!A:Z=
} sztnRX_
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String sHeader; t]@Zd*
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for(int i=1;;i++) !^m5by
{ _nRshTt`V&
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); K^w9@&