/* }|h# \$w
**SiteFileFetch.java `V}q-Zdy
*/ X-bcQ@Oj
package NetFox; r8`ffH
import java.io.*; |mZxfI
import java.net.*; 0"jY.*_EW
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public class SiteFileFetch extends Thread { .]8ZwAs=&
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SiteInfoBean siteInfoBean = null; //文件信息Bean %z=le7
long[] nStartPos; //开始位置 /CrSu
long[] nEndPos; //结束位置 uy>q7C
FileSplitterFetch[] fileSplitterFetch; //子线程对象 5%Y3 Kwyy
long nFileLength; //文件长度 {&&z-^
boolean bFirst = true; //是否第一次取文件 ?g_3 [Fk
boolean bStop = false; //停止标志 =Qy<GeY
File tmpFile; //文件下载的临时信息 \j$&DCv
DataOutputStream output; //输出到文件的输出流 G<L;4nA)
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) S\CCrje
public SiteFileFetch(SiteInfoBean bean) throws IOException ?qb}?&1
{ (d(CT;
siteInfoBean = bean; /2&c$9=1
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); LQ@"Xe]5
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;YaQB#GK%
if(tmpFile.exists ()) 6fkRrD
{ 0CHH)Bku
bFirst = false; 5?f ^Rz
read_nPos(); Akq2 d;
} Z%gh3
else 6_(&6]}66
{ d-oMQGOklb
nStartPos = new long[bean.getNSplitter()]; !Jo_"#5
nEndPos = new long[bean.getNSplitter()]; ]vAz
} z<MsKD0Q
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public void run() " s,1%Ltt
{ GV1pn) 4
//获得文件长度 esJ~;~[@(r
//分割文件 v&6-a* <Z
//实例FileSplitterFetch
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//启动FileSplitterFetch线程 CT&|QH{
//等待子线程返回 b!+hH Hv:
try{ ` ./$&'
if(bFirst) =7?4eYHC
{ l5~os>
nFileLength = getFileSize(); d9k0F
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if(nFileLength == -1) N:^n('U&j
{ kXViWOXU^
System.err.println("File Length is not known!"); EfqX
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} [CY9^N
else if(nFileLength == -2) &eJfGt5
{ t$` r4Lb9/
System.err.println("File is not access!"); &j;wCvE4+
} ez7A4>/
else Mc) }\{J
{ aEB_#1
for(int i=0;i<nStartPos.length;i++) <;lkUU(WT2
{ b]e"1Y)D-
nStartPos = (long)(i*(nFileLength/nStartPos.length)); &1Ok`_plO
} L7l
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for(int i=0;i<nEndPos.length-1;i++) ]>!K3kB
{ Z*F3G#A
nEndPos = nStartPos[i+1]; 11 NQR[
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nEndPos[nEndPos.length-1] = nFileLength; HVRZ[Y<^
} wH*-(*N"
} 7 W5@TWM
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//启动子线程 1Yq!~8
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; X;$+,&M"
for(int i=0;i<nStartPos.length;i++) \$K20)
{ 5%"V[lDx@
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;[ZEDF5H
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),
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nStartPos,nEndPos,i); ibcRU y0%
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *;W+>W
fileSplitterFetch.start(); fuW\bo3
} 3<Lx&p~%T
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6bg
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); y
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", RbB.q p
nEndPos = " + nFileLength); _;"il%l=1
// fileSplitterFetch[nPos.length-1].start(); Lj({[H7D!
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//等待子线程结束 H_7/%noS5
//int count = 0; 4Z3su^XR
//是否结束while循环 1C+13LE$U
boolean breakWhile = false; "Bkfoi
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while(!bStop) `bq<$e
{ }RF(CwZr(
write_nPos(); g&L!1<,
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Utility.sleep(500); 70?\ugxA
breakWhile = true; Z-%\
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for(int i=0;i<nStartPos.length;i++) M/f<A$xx_
{ #~]zhHI
if(!fileSplitterFetch.bDownOver) H*n-_{h"t
{ [jQp~&nY
breakWhile = false; &u."A3(
break; CO/]wS
} `v!urE/gg%
} 9cbd~mM{
if(breakWhile) h,:m~0gmj
break; gjyYCjF
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//count++; [>I<#_^~
//if(count>4) +fB5w?Rg
// siteStop(); ),%%$G\
} K8|r&`X0
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System.err.println("文件下载结束!"); 6_o*y8s.
} $S6`}3
catch(Exception e){e.printStackTrace ();} s[>,X#7 y
} 7~h<$8Y(T
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//获得文件长度 u{cW:
public long getFileSize() l'rja.\
{ P= BZ+6DS
int nFileLength = -1; ?>:g?.+
try{ U+jOTq8 M
URL url = new URL(siteInfoBean.getSSiteURL()); e*kpdS~U&
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &J]K3w1p
httpConnection.setRequestProperty("User-Agent","NetFox"); Pbn*_/H
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int responseCode=httpConnection.getResponseCode(); z|J_b"u4
if(responseCode>=400) HVCe;eI
{ eb\K "ec"
processErrorCode(responseCode); tKuwpT1Qc
return -2; //-2 represent access is error "S]0
} X,%
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String sHeader; 9rX&uP)j^#
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for(int i=1;;i++) D/gw .XYL
{ .hb:s,0mP
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5V~oIL
//Utility.log(in.readLine()); C
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sHeader=httpConnection.getHeaderFieldKey(i); xIW3={b 3
if(sHeader!=null) wU36sCo
{ Vm(y7}Aq{
if(sHeader.equals("Content-Length")) Ml{,
{ p`dU2gV
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 2 a)xTA#
break; FX&~\kmV'j
} 6Pnjmw.HV
} 1-uxC^u?|#
else m9WDT
break; &ywPuTt
} ~Ffo-Nd-
} s c,Hq\$&
catch(IOException e){e.printStackTrace ();} 4Z=_,#h4.
catch(Exception e){e.printStackTrace ();} (,\+tr8r8
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Utility.log(nFileLength); bH9kj/q\b
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return nFileLength; &{hL&BLr
} 49c:V,
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//保存下载信息(文件指针位置) SM#]H-3
private void write_nPos() ^mDe08.
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{ VcYrK4
try{ ek\ xx
output = new DataOutputStream(new FileOutputStream(tmpFile)); rU:`*b<
output.writeInt(nStartPos.length); 8W(*~}ydYY
for(int i=0;i<nStartPos.length;i++) Vb;*m5,?:
{ 2;`1h[,-^
// output.writeLong(nPos); #Y`~(K47
output.writeLong(fileSplitterFetch.nStartPos); ?
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output.writeLong(fileSplitterFetch.nEndPos); N)| yu1S
} 6<SAa#@ey
output.close(); %lhEM}Sm
} c|y(2K)o[=
catch(IOException e){e.printStackTrace ();} /{l$sBUL
catch(Exception e){e.printStackTrace ();} }OR@~V{Gj
} G6P?2@
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//读取保存的下载信息(文件指针位置) ^ogt+6c
private void read_nPos() GW@;}m(
{ sqwGsO$#
try{ jXx<`I+]
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Yui3+}Ms
int nCount = input.readInt(); F#Ryu~,"
nStartPos = new long[nCount]; 3{64 @s
nEndPos = new long[nCount]; {X+3;&