/* yG%<LP2p@f
**SiteFileFetch.java p#6V|5~8
*/ >~)IsQ*%
package NetFox; n>[" h2
import java.io.*; gyx4= 'Q
import java.net.*; FaVeP%v
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public class SiteFileFetch extends Thread { [tEHr
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SiteInfoBean siteInfoBean = null; //文件信息Bean [Dou%\
long[] nStartPos; //开始位置 #'?gMVSk
long[] nEndPos; //结束位置 NIasce e
FileSplitterFetch[] fileSplitterFetch; //子线程对象 7x ?2((
long nFileLength; //文件长度 JRT,%;*,
boolean bFirst = true; //是否第一次取文件 <z+b88D
boolean bStop = false; //停止标志 !?%'Fy6t
File tmpFile; //文件下载的临时信息 R]8^
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DataOutputStream output; //输出到文件的输出流 eKj'[2G@/
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) O"Ua|8
public SiteFileFetch(SiteInfoBean bean) throws IOException |DZ3=eWZ
{ ?5yj</W
siteInfoBean = bean; R:}u(N
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); {?zbrgQ<Z
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); sHwn,4|iY
if(tmpFile.exists ()) wWU5]v
{ N)rf/E0
bFirst = false; C"=^(HU
read_nPos(); acdWU"<
} /Wqx@#
else 5HAIKc
{ 83ajok4E
nStartPos = new long[bean.getNSplitter()]; lx vRF93a.
nEndPos = new long[bean.getNSplitter()]; _a e&@s1
} 6QC=:_M;
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public void run() hDf|9}/UQd
{ `Rc7*2I)l
//获得文件长度 uKBSv*AM
//分割文件 \f AL:mJ
//实例FileSplitterFetch uDZ$'a
//启动FileSplitterFetch线程 jW G=k#WN
//等待子线程返回 (DW[#2\.
try{ c T!L+zg
if(bFirst) DrTo")T
{ )E2^G)J$W
nFileLength = getFileSize(); Q.8)_w
if(nFileLength == -1) g+-=/Ge
{ t#0/_tD
System.err.println("File Length is not known!"); {0#p, l
} us^2Oplq<
else if(nFileLength == -2) >WsRCBA
{ DjX*2O
System.err.println("File is not access!"); TyCMZsvM,
} ;BR`}~m
else
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{ ':v@Pr|
for(int i=0;i<nStartPos.length;i++) z>f>B6
{ "F*'UfOwrZ
nStartPos = (long)(i*(nFileLength/nStartPos.length)); <u"h'e/oW_
} #h 4`f
for(int i=0;i<nEndPos.length-1;i++) qQ_o>+3VAy
{ vIoV(rc+
nEndPos = nStartPos[i+1]; $=?CW(
} ^r7-|
nEndPos[nEndPos.length-1] = nFileLength; l9J ]<gG
} 0wzq{~\{=_
} I#]$H#}Av
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//启动子线程 nr#DE?
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 88dq8T4
for(int i=0;i<nStartPos.length;i++) r2EIhaGF;
{ @+v;B:
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8%UI<I,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), rsp?N{e
nStartPos,nEndPos,i); P8JN
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ba$Ibq,r/
fileSplitterFetch.start(); dnby &-+T
} CaZ{UGokL
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fR>(b?C
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); EH'?wh|Yp
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 2Et7o/\<
nEndPos = " + nFileLength); ~ituPrH%<
// fileSplitterFetch[nPos.length-1].start(); GRanR'xG
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//等待子线程结束 QY<{S&k9
//int count = 0; sLV bFN`
//是否结束while循环 g+ik`q(ge
boolean breakWhile = false; zS*X9|p
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while(!bStop) Q?GmSeUi
{ .)W'{2J-
write_nPos(); aDx{Q&
Utility.sleep(500); Tc6H%itV
breakWhile = true; 0u4:=Z}W
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for(int i=0;i<nStartPos.length;i++) C:n55BE9
{ 1.]Py" @:
if(!fileSplitterFetch.bDownOver) DRLX0Ml]\
{ %@Nuzdp
breakWhile = false; kfo, PrW`A
break; VJM n5v[V
} Kc= &jCn
} sKhX0,s&
if(breakWhile) iHo2=Cz
break; f1;Pzr
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//count++; I
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//if(count>4) d%Zt]1$
// siteStop(); Qo{Ez^q@J
} M0<gea\ =
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System.err.println("文件下载结束!"); tL1"Dt>
} Ti
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catch(Exception e){e.printStackTrace ();} tY<D\T
} d-g&TSGd
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//获得文件长度 o'@VDGS`
public long getFileSize() <">tB"="b
{ \$ L2xd
int nFileLength = -1; w{3
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try{ le%_[/_I|
URL url = new URL(siteInfoBean.getSSiteURL()); s5>=!yX
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); az~4sx$+}
httpConnection.setRequestProperty("User-Agent","NetFox"); r{.DRbn
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int responseCode=httpConnection.getResponseCode(); [^B04x@
if(responseCode>=400) 0t<]Uf
{ !L"3Ot d
processErrorCode(responseCode); RQ#gn
return -2; //-2 represent access is error MNNPBE
} A/Kw"l>
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String sHeader; s8.O L_e
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for(int i=1;;i++) 6|3$43J,F
{ oop''6`C%
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); {~ ZSqd
//Utility.log(in.readLine()); A.m#wY8
sHeader=httpConnection.getHeaderFieldKey(i); g?!vRid@S
if(sHeader!=null) pc<")9U%/
{ 7f_4qb8
if(sHeader.equals("Content-Length")) w1EYXe
{ $;Lb|~
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9:CJl6~N)#
break; ?c0OrvM
} TLzg*
} P9vN5|"M
else 703=.xj
break; 7%L%dyN
} rxjMCMF
} utKtxLX"
catch(IOException e){e.printStackTrace ();} x F7C1g(
catch(Exception e){e.printStackTrace ();} qYc]Y9fi
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Utility.log(nFileLength); :Eq=wbAw
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return nFileLength; J:Uf}!D
} 48Y5ppcS
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//保存下载信息(文件指针位置) q}*"0r
private void write_nPos() LGZ5py=xb
{ |3W\^4>,
try{ ivsp):W
output = new DataOutputStream(new FileOutputStream(tmpFile)); ZvEcExA-
output.writeInt(nStartPos.length); -Czq[n=0(
for(int i=0;i<nStartPos.length;i++) aW]!$
{ 9B")/Hz_
// output.writeLong(nPos); ZYZQ?FN
output.writeLong(fileSplitterFetch.nStartPos); F;Ms6 "K
output.writeLong(fileSplitterFetch.nEndPos); G=a.Wff
} WJCEiH
output.close(); gBz$RfyF
} gE%{#&