/*
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**SiteFileFetch.java FZ6.<wN
*/ OziG|o@I
package NetFox; MGCwT@P
import java.io.*; l[.*X
import java.net.*; ?<YtlqL
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public class SiteFileFetch extends Thread { #r `hK)
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SiteInfoBean siteInfoBean = null; //文件信息Bean a.v$+}+.[,
long[] nStartPos; //开始位置 xAMj 16ZF
long[] nEndPos; //结束位置 wO@b=1j
FileSplitterFetch[] fileSplitterFetch; //子线程对象 @#c(4}^ <w
long nFileLength; //文件长度 H'-Fv!l?
boolean bFirst = true; //是否第一次取文件 =iC5um:
boolean bStop = false; //停止标志 g2l|NI#c^
File tmpFile; //文件下载的临时信息 pv+FPB
DataOutputStream output; //输出到文件的输出流 L01R.3Z+
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) .^N+'g
public SiteFileFetch(SiteInfoBean bean) throws IOException ,-ZAI b*
{ wh
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siteInfoBean = bean; g><u(3
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); wb2N$Ew=
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); o^wj_#ai$
if(tmpFile.exists ()) ez%RWck
{ 'D#}ce)s#
bFirst = false; c5>&~^~>Tx
read_nPos(); _|D8~\y
} 9aD6mp
else +?zyFb]Km
{ j9XY%4.
nStartPos = new long[bean.getNSplitter()]; P1]ucu_y,
nEndPos = new long[bean.getNSplitter()]; ~O?Gi 4^Yg
} i)Vqvb0Q
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public void run() PA5ET@mD
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//获得文件长度 SE)_5|k*
//分割文件 Wz nz
//实例FileSplitterFetch S,fMGKcq
//启动FileSplitterFetch线程 8kXbyKX[b
//等待子线程返回 *E+2E^B
try{ qEX2K^y'4"
if(bFirst) @4^5C-
{ Y}7'OM
nFileLength = getFileSize(); Ij(S"P@
if(nFileLength == -1) m <IPi <
{ d%Jl9!u
System.err.println("File Length is not known!"); #R4Mv(BG
} A3*ti!X<6
else if(nFileLength == -2) /p~"?9b[ i
{ okoD26tK
System.err.println("File is not access!"); J5)e 7
} 8[Cp
else eJ+;!0
{ %P0dY:L~
for(int i=0;i<nStartPos.length;i++) OYzt>hdH
{ %eGxQDIXg
nStartPos = (long)(i*(nFileLength/nStartPos.length)); !;{@O`j?b
}
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for(int i=0;i<nEndPos.length-1;i++) *_`T*$
{ hhlQ!WV2
nEndPos = nStartPos[i+1]; pRx^O
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} *yKsgH
nEndPos[nEndPos.length-1] = nFileLength; >aW|W!.
} %eT4Q~}5"
} Dx$74~2e
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//启动子线程 M$ep.<Z1|
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; `~UCWK
for(int i=0;i<nStartPos.length;i++) a3?Dtoy'
{ N[^%|
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %}%D8-d}G
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), J_}&Btb)e
nStartPos,nEndPos,i); QtJe){(z+
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); auAST;"Z8
fileSplitterFetch.start(); Ictc '#y
} )wP0U{7?v
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _DMj)enH"
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); s#`%c({U|
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 0! 9vGs
nEndPos = " + nFileLength); 5
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// fileSplitterFetch[nPos.length-1].start(); 4U<'3~RN
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//等待子线程结束 +'>N]|Z
//int count = 0; 8V_
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//是否结束while循环 ?*u)T%S
boolean breakWhile = false; daWmF
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while(!bStop) L'6_~I
{ z~4L=tA(
write_nPos(); CWE
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Utility.sleep(500); _S8]W
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breakWhile = true; -4,qAnuMx
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for(int i=0;i<nStartPos.length;i++) bVtboHlY
{ ^%M!!wlUH
if(!fileSplitterFetch.bDownOver) ?XsL4HIx
{ ZgtW
breakWhile = false; \4K8*`$
break; wC!(STu
} cy)L%`(7
} 9V zk:zOT
if(breakWhile) AbZ:AJ(
break; g0rdF
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//count++; PHDKx+$
//if(count>4) lADi
// siteStop(); uP|AP
} oVoTnGNM6
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System.err.println("文件下载结束!"); UbC)XiO
} RK'3b/T
catch(Exception e){e.printStackTrace ();}
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} =_%:9FnQ0
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//获得文件长度 +;Cq>1x,
public long getFileSize() QV{Nq=%]
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int nFileLength = -1; 7X|&:V.s|
try{ '(2G qX!
URL url = new URL(siteInfoBean.getSSiteURL());
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); K W04
httpConnection.setRequestProperty("User-Agent","NetFox"); e6sL N
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int responseCode=httpConnection.getResponseCode(); `~@BU
if(responseCode>=400) htM5Nm[g
{ 9!2KpuWji
processErrorCode(responseCode); {:6VJ0s\
return -2; //-2 represent access is error WgE~H)_%
} 4yRT!k}o
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String sHeader; H@G7oK
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for(int i=1;;i++) IFG`
{ {y<_S]0
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); CXUNdB
//Utility.log(in.readLine()); pNQd\nY|0
sHeader=httpConnection.getHeaderFieldKey(i); Fi7pq2
if(sHeader!=null) +"'h?7'C
{ qmxkmO+Qur
if(sHeader.equals("Content-Length")) ]t(g7lc}U
{
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); B Am{Gb
break; W!IK>IW"
} i]Kq
} .YS[Md{
else 3kKXzIh
break; _BR>- :Jr
} m{b(^K9}
} $#t&W&
catch(IOException e){e.printStackTrace ();} w'L;`k;Q
catch(Exception e){e.printStackTrace ();} $Q47>/CUc^
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Utility.log(nFileLength); g@nE7H1V
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return nFileLength; #wC4$y<>
} g1&GX(4[
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//保存下载信息(文件指针位置) DK4V/>@8
private void write_nPos() {{2ZWK 6|
{ 61gZZM
try{ #}k^g:l1
output = new DataOutputStream(new FileOutputStream(tmpFile)); 4AP<mo
output.writeInt(nStartPos.length); C
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for(int i=0;i<nStartPos.length;i++) 56TUh_
{ (F_#LeJ|
// output.writeLong(nPos); mg#+%v
output.writeLong(fileSplitterFetch.nStartPos); u_:"
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output.writeLong(fileSplitterFetch.nEndPos); A>d*<#x
} C/]0jAAE7
output.close(); @Vb-BC,
} u 4)i7
catch(IOException e){e.printStackTrace ();} 3!*J;Y
catch(Exception e){e.printStackTrace ();} (a)d7y.oo
} CZbp}:|
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//读取保存的下载信息(文件指针位置) E-!`6
private void read_nPos() 2abWIw4
{ M+nz~,![
try{ N %0F[sY6
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); *!.'1J:YJ(
int nCount = input.readInt(); a2p<HW;)m
nStartPos = new long[nCount]; (( t8
nEndPos = new long[nCount]; [>6:xGSe9X
for(int i=0;i<nStartPos.length;i++) z?E:s.4F
{ W%Ky#!\-
nStartPos = input.readLong(); %} \@Wk~
nEndPos = input.readLong(); uWMAXGL
} r0S"}<8O
input.close(); =\_MJ?A$
} 2;6p2GNSh
catch(IOException e){e.printStackTrace ();} NFc<%#H
catch(Exception e){e.printStackTrace ();} 4pA(.<#A
} 8HTV"60hTs
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private void processErrorCode(int nErrorCode) *4+;Ey
{ `Jz"rh-M
System.err.println("Error Code : " + nErrorCode); h4.ZR={E
} 4$vya+mAk5
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//停止文件下载 wRU pQ~=B2
public void siteStop() \.Q"fd?a_D
{ ,=z8aiUu
bStop = true; &a-:ZA@
for(int i=0;i<nStartPos.length;i++) yjN|PqtSV
fileSplitterFetch.splitterStop(); &.Yh_
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} :^?ZVi59j
} kqv>rA3
//负责部分文件的抓取 ~@L$}Eu
**FileSplitterFetch.java H
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*/ 1kTJMtZG~
package NetFox; b6oPnP_3P
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import java.io.*; -zMXc"'C^k
import java.net.*; t</Kel|D
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