/* k8}fKVU;
**SiteFileFetch.java h SS9mQ
*/ 9D\E0YG X/
package NetFox; 98 R/^\
import java.io.*; @JhkUGG]p
import java.net.*; )J @[8 x`
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public class SiteFileFetch extends Thread { =@4,szLO
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SiteInfoBean siteInfoBean = null; //文件信息Bean ]@z!r2[
long[] nStartPos; //开始位置 &77J,\C$:
long[] nEndPos; //结束位置 &2 Yo
FileSplitterFetch[] fileSplitterFetch; //子线程对象 n^;-&
long nFileLength; //文件长度 jbS@6 *_
boolean bFirst = true; //是否第一次取文件 h/\Zq
boolean bStop = false; //停止标志 q[qX O5
File tmpFile; //文件下载的临时信息 8BAe6-*S8
DataOutputStream output; //输出到文件的输出流 s-Gd{=%/q
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) oe^JDb#
public SiteFileFetch(SiteInfoBean bean) throws IOException <`SA>P
{ 83V\O_7j
siteInfoBean = bean; #pAN
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }|Q\@3&
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); kK}?NKqT
if(tmpFile.exists ()) B^TgEr
{ 2
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bFirst = false; C<a&]dN/
read_nPos(); sYXLVJ>b
} ]#shuZ##>0
else \kyoA
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{ 2<J2#}+\
nStartPos = new long[bean.getNSplitter()]; -:_3N2U=+
nEndPos = new long[bean.getNSplitter()]; b)Nd}6}<?
} aU.3
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} ]lGkZyUhI
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public void run() ] rqx><!
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//获得文件长度 6rE8P#
//分割文件 TW 1`{SM
//实例FileSplitterFetch s7}-j2riq
//启动FileSplitterFetch线程 \anOOn@
//等待子线程返回 #lMIs4i.
try{ 8v/,<eARJ
if(bFirst) .u&X:jOE
{ =[aiW|Y
nFileLength = getFileSize(); :##$-K*W"
if(nFileLength == -1) S3HyB
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{ )Dhx6xM[a
System.err.println("File Length is not known!"); :_HdOm
} /z!y[ri+J
else if(nFileLength == -2) W^HE1Dt]
{ 6X'0 T}
System.err.println("File is not access!"); k fY;
} Xajt][
else wU'+4N".
{ 0[YksNNl1
for(int i=0;i<nStartPos.length;i++) !}x-o`a5
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); XkUwO ]
} @||nd,i`n~
for(int i=0;i<nEndPos.length-1;i++) N@X6Z!EO
{ It2:2
nEndPos = nStartPos[i+1]; UnVa`@P^:G
} >u0XV "g$
nEndPos[nEndPos.length-1] = nFileLength; } @3q;u )
} \goiW;b
} t&JOASYC
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//启动子线程 O`_, _
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; y~OP9Tg
for(int i=0;i<nStartPos.length;i++) t}}Ti$$>
{ \O~/^ Y3U!
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 73u97oe>1
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3e-E/6zH6
nStartPos,nEndPos,i); }3WP:Et
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ht}?=ZzW
fileSplitterFetch.start(); v`Y{.>[H[
} ql5&&e=-
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,bM):
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <h+UC# .x
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", nRX'J5Q
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nEndPos = " + nFileLength); (u@X5O(a
// fileSplitterFetch[nPos.length-1].start(); k`' *niz
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//等待子线程结束 b$
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//int count = 0; 9RSviIi$
//是否结束while循环 t<}N>%ZO
boolean breakWhile = false; k=p[Mlic/
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while(!bStop) #_3ZF"[zq
{ /`#JM
write_nPos(); @Wm:Rz
Utility.sleep(500); 7z\#"~(.
breakWhile = true; h{\S '8
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for(int i=0;i<nStartPos.length;i++) )3|a_
{ LtUw
if(!fileSplitterFetch.bDownOver) |#xBC+
{ 805oV(-
breakWhile = false; 4kV$JV.l
break; w4Hq|N1-Y
} :T@} CJ
} )Xt#coagS
if(breakWhile) c%wztP;L
break; lc [)Ev
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//count++; S5H}
//if(count>4) FH%:NO
// siteStop(); }2c&ARQ.m>
} ZcHIk{|
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System.err.println("文件下载结束!"); @x[A^
} k%sxA
catch(Exception e){e.printStackTrace ();} P,G
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} T.%yeJiE
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//获得文件长度 aehB,l0
public long getFileSize() _T805<aUW\
{ K,PN:
int nFileLength = -1; oRg,oy
try{ Ut/%+r"s
URL url = new URL(siteInfoBean.getSSiteURL()); r1=j$G
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8y[Rwa
httpConnection.setRequestProperty("User-Agent","NetFox"); bl10kI:F
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int responseCode=httpConnection.getResponseCode(); -M T1q qi
if(responseCode>=400) |v#D}E
{ !N][W#:
processErrorCode(responseCode); +.rOqkxJ
return -2; //-2 represent access is error G%!i="/9
} {}RU'<D
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String sHeader; f?16%Rk<
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for(int i=1;;i++) Qk|+Gj
{ OP=-fX|*Q
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); f+)LVT8p
//Utility.log(in.readLine()); Q$k#q<+0
sHeader=httpConnection.getHeaderFieldKey(i); B
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if(sHeader!=null) 1TGE>HG
{ BT$Oh4y4
if(sHeader.equals("Content-Length")) KP>1%ap6
{ 2r+nr
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); mxpw4
break; AG;KXL[V
} Fs =)*6}&
} <{YzmN\Z
else 23'{{@30
break; /Ah'KN|EN
} NweGK
} #3RElI
catch(IOException e){e.printStackTrace ();} /9Qr1@&v
catch(Exception e){e.printStackTrace ();} )7#3n(_np
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Utility.log(nFileLength); hOFvM&$
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return nFileLength; {F\P3-ub
} */@I$*
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//保存下载信息(文件指针位置) MJH>rsTQ
private void write_nPos() tqp i{e
{ S<i.O
try{ T#I}w\XlhP
output = new DataOutputStream(new FileOutputStream(tmpFile)); }5$le]
output.writeInt(nStartPos.length); Yn?Xo_Y
for(int i=0;i<nStartPos.length;i++) TT#V'r\
{ J*:_3Wsy
// output.writeLong(nPos); 9q[[
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output.writeLong(fileSplitterFetch.nStartPos); Are0Nj&?
output.writeLong(fileSplitterFetch.nEndPos); \CS4aIp
} n!Y}D:6c6
output.close(); _~P&8
} k$DRX)e
catch(IOException e){e.printStackTrace ();} <QaUq`,
catch(Exception e){e.printStackTrace ();} w`M`F<_\:
} *1:kIi7_
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//读取保存的下载信息(文件指针位置) &
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private void read_nPos() W(-son~I
{ 0&\71txrzg
try{ DPmY_[OAE
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); C58B(Ndo
int nCount = input.readInt(); 9U )9u["DH
nStartPos = new long[nCount]; T@zp'6\H
nEndPos = new long[nCount]; g]BA/Dw
for(int i=0;i<nStartPos.length;i++) ~xws5n}F
{ )U]q{0`
nStartPos = input.readLong(); D)S_ p&
nEndPos = input.readLong(); ;/IXw>O(/
} VuK>lY&
input.close(); gt~u/Z%
} z-sq9Qp&x
catch(IOException e){e.printStackTrace ();} 9d=\BBNZ
catch(Exception e){e.printStackTrace ();} G_ ~qk/7mF
} MFWkJbZV
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private void processErrorCode(int nErrorCode) x>A[~s"|N
{ xnw' &E
System.err.println("Error Code : " + nErrorCode); 2<'ol65/c
} 28-z
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//停止文件下载
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public void siteStop() 0Xn,q]@Z
{ {CTJX2&
bStop = true; ^bdXzjf
for(int i=0;i<nStartPos.length;i++) N{M25ucAHl
fileSplitterFetch.splitterStop(); q,;wD1_wG
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} WK#%G
} 9gIim
//负责部分文件的抓取 SFFJyRCz
**FileSplitterFetch.java @2_E9{ T
*/ ,WW=,P
package NetFox; Z,~@_;F
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import java.io.*; _?I*::
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import java.net.*; 34_
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public class FileSplitterFetch extends Thread { EEx:Xk%5hX
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String sURL; //File URL 5HY0 *\
long nStartPos; //File Snippet Start Position $ma@z0%8}
long nEndPos; //File Snippet End Position %):pfM;b
int nThreadID; //Thread's ID D& &71X '
boolean bDownOver = false; //Downing is over Wk!<P"
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boolean bStop = false; //Stop identical ?@6Zv$vZ
FileAccessI fileAccessI = null; //File Access interface >5Y.
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException $uRi/%Q9
{ $}us+hGZ
this.sURL = sURL; l$R9c+L=
this.nStartPos = nStart; t"MrrK>T
this.nEndPos = nEnd; ;U y}(
nThreadID = id; Z:2%gU&W
fileAccessI = new FileAccessI(sName,nStartPos);//定位 )?6%d
} (W[]}k;
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public void run() gp'k(rGH
{ Qj|tD+<
while(nStartPos < nEndPos && !bStop) <