/* ioW&0?,Ym
**SiteFileFetch.java I@/s&$H`l
*/ JX)%iJq#
package NetFox; wjzR 8g0bQ
import java.io.*; C}'Tmi
import java.net.*; <Jc
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public class SiteFileFetch extends Thread { 6lAHB*`
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SiteInfoBean siteInfoBean = null; //文件信息Bean *`]#ntz9
long[] nStartPos; //开始位置 x*#9\*@EI
long[] nEndPos; //结束位置 N\{{:<Cp\
FileSplitterFetch[] fileSplitterFetch; //子线程对象 <sncW>?!~
long nFileLength; //文件长度 ?y/LMja
boolean bFirst = true; //是否第一次取文件 L#|6Lnp^
boolean bStop = false; //停止标志 ^{}$o#iof
File tmpFile; //文件下载的临时信息 XM#xxf* Y
DataOutputStream output; //输出到文件的输出流 fW3awR{
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) L,\wB7t
public SiteFileFetch(SiteInfoBean bean) throws IOException E+"m@63
{ -\|S=<
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siteInfoBean = bean; dbsD\\,2%N
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <|=^[' vi
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Y=5}u&\
if(tmpFile.exists ()) WU+OS(
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bFirst = false; $S'~UbmYU
read_nPos(); ~PZIYG"D
} 7[I%UP
else '$0~PH&
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nStartPos = new long[bean.getNSplitter()]; 8!XK[zL
nEndPos = new long[bean.getNSplitter()]; 5jey%)=
} 0!tw)HR%
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public void run() 1yd}F`{8UF
{ "CTK%be{q/
//获得文件长度 ym*oCfu=
//分割文件 xH4Qv[k
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//实例FileSplitterFetch aovw'O\Q
//启动FileSplitterFetch线程 L ]Y6/Q
//等待子线程返回 Z=.$mFE\
try{ yt[vd8O'c
if(bFirst) e.'6q
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{ !mIr_d2"
nFileLength = getFileSize(); 7^FJ+gN8b
if(nFileLength == -1) MO-7yp:K
{ }UzRFIcv
System.err.println("File Length is not known!"); w!--K9
} :406Oa
else if(nFileLength == -2) SCL8.%z D
{ /v-:ca)7mI
System.err.println("File is not access!"); IBm"VCg{Ew
} |kc#=b@l
else ]
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{ ]t)#,'$^[W
for(int i=0;i<nStartPos.length;i++) xe@11/F
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); 8Cef ]@x
} rE?Fp
for(int i=0;i<nEndPos.length-1;i++) ,LodP%%UV
{ U9(p ^
nEndPos = nStartPos[i+1]; ! _p(H
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nEndPos[nEndPos.length-1] = nFileLength; k];NTALOG
} )cV*cDL1j
} sLze/D_M*
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//启动子线程 yOswqhz
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Yaix\*II
for(int i=0;i<nStartPos.length;i++) LK:J kjp^
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %DhM }f
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), srQ]TYH ,
nStartPos,nEndPos,i); M37GQvo
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Nv5)A=6#AA
fileSplitterFetch.start(); ZwOX ,D
} bnZ~jOHl
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bmQ-5SE
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ~-2Gx
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 9$*O ^
nEndPos = " + nFileLength); bw8[L;~%_
// fileSplitterFetch[nPos.length-1].start(); 8;v/b3
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//等待子线程结束 ]$&N"&q
//int count = 0; `M[o.t
//是否结束while循环 6-Id{m x
boolean breakWhile = false; k9m9IE"9=$
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while(!bStop) n5+Z|<3)
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write_nPos(); brEA-xNWQ
Utility.sleep(500); u"gtv
breakWhile = true; A-f,&TO
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for(int i=0;i<nStartPos.length;i++) -gB9476-
{ :r4o:@N'
if(!fileSplitterFetch.bDownOver) @@V{W)rl
{ p6X-P%s
breakWhile = false; XiO~^=J
break; +SNjU"x
} g\]~H%2 ,
} Vrn+"2pdJ
if(breakWhile) ib- H
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break; @! {Y9k2
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//count++; 7q(A&
//if(count>4) a.2Xl}2o5
// siteStop(); =/Ph]f9
} IXv9mr?H}
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System.err.println("文件下载结束!"); _=_<cgy1u
} txik{' :
catch(Exception e){e.printStackTrace ();} i:60|ngK
} 7 T
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//获得文件长度 +Ze;BKZ3
public long getFileSize() mtmTlGp6Lc
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int nFileLength = -1; 4 '5|YGQj
try{ ha?M[Vyw4Q
URL url = new URL(siteInfoBean.getSSiteURL()); dJ{q}U
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); iAo/Dnp2J
httpConnection.setRequestProperty("User-Agent","NetFox"); ]j0/.pG
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int responseCode=httpConnection.getResponseCode(); k~*%Z!V}C
if(responseCode>=400) uN4e n,
{ ]d~2WX Y
processErrorCode(responseCode); 89x;~D1
return -2; //-2 represent access is error ?$#P
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} UM<!bNz`
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String sHeader; =&F~GCZ>
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for(int i=1;;i++) ZeqsXz
{ e2yCWolmTS
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :gn&wi
//Utility.log(in.readLine()); {H*
sHeader=httpConnection.getHeaderFieldKey(i); :$*@S=8 O
if(sHeader!=null) NfWL3"&X
{ bTt1y O
if(sHeader.equals("Content-Length")) F*T$n"^
{ ]\y]8v5(
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (H8JV1J
break; !/e*v>3u&
} NFyKTA6
} GOOm] ]I
else {y'4&vt<~
break; ey6ujV7!
} Zs4NN2~
} ?a-5^{{
catch(IOException e){e.printStackTrace ();} OT0IGsJ"'
catch(Exception e){e.printStackTrace ();} }T-'""*
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Utility.log(nFileLength); )-X/"d
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return nFileLength; Sm{> 8e}UE
} 2 w6iqLr?
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