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**SiteFileFetch.java tJG (*
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package NetFox; "#J}A0
import java.io.*; Vg) ^|
import java.net.*; 6<Be#Y]b
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public class SiteFileFetch extends Thread { x6~Fb~aP
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SiteInfoBean siteInfoBean = null; //文件信息Bean KD9Ca $-
long[] nStartPos; //开始位置 B4 <_"0
long[] nEndPos; //结束位置 OT"lP(,
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ~CJYQFt
long nFileLength; //文件长度 cxk=|
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boolean bFirst = true; //是否第一次取文件 "vvFq ,c
boolean bStop = false; //停止标志 s~#?9vW
File tmpFile; //文件下载的临时信息 >d)|r
DataOutputStream output; //输出到文件的输出流 _qk9o
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /.f!
public SiteFileFetch(SiteInfoBean bean) throws IOException ?~]>H A:
{ }"g@E-]N
siteInfoBean = bean; dfXV1B5
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 2voNgY
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); G+;g:_E=
if(tmpFile.exists ()) @D2`*C9
{ <,#rtVO$
bFirst = false; *Y^5M"AB_
read_nPos(); d?E4[7<t$1
} EywZIw?mjX
else rHR5,N:
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nStartPos = new long[bean.getNSplitter()]; !/[AQ{**T!
nEndPos = new long[bean.getNSplitter()]; .Pqj6Ko9
} Iy-u`S
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} >l6XZQ
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public void run() Q9SPb6O2
{ ]eORw$f
//获得文件长度 s 0 =@ &/
//分割文件 Ynv 9v\n|
//实例FileSplitterFetch ,[+ZjAyG}#
//启动FileSplitterFetch线程 9?v)
//等待子线程返回 \q|e8k4p
try{ p3i
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if(bFirst) ;o&_:]S
{ I]s:Ev[~
nFileLength = getFileSize(); cC*zj\O
if(nFileLength == -1) \0xzBs1!
{ %Td+J`|U+
System.err.println("File Length is not known!"); oo"JMD)
} us(sZG
else if(nFileLength == -2) u~j'NOv
{ FC|y'j 0
System.err.println("File is not access!"); !NQf< ch
} c|8KT
else P1vF{e
{ ~0:$G?fz
for(int i=0;i<nStartPos.length;i++) WllCcD1
{ Y>c5:F;
nStartPos = (long)(i*(nFileLength/nStartPos.length)); .f [\G*
} h?M'7Lti
for(int i=0;i<nEndPos.length-1;i++) GhaAvyN
{ j>0SE
nEndPos = nStartPos[i+1]; DRS;lJ2
} KHiYV
nEndPos[nEndPos.length-1] = nFileLength; L8%=k%H(1
} ant-\w>}
} D<$j`r
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//启动子线程 u^;sx/
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; %6vMpB`g
for(int i=0;i<nStartPos.length;i++) EC:x,i
{ sP=2NqU3Q
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), BUboP?#%)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), KG7X8AaK#
nStartPos,nEndPos,i); 70I4-[/z[d
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); A_8`YN"Xk
fileSplitterFetch.start(); `RL(N4H
} `-E.n'+
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _j|n}7a
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); GNj/jU<o!
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 'ocwXyP,
nEndPos = " + nFileLength); ,L8I7O}A;
// fileSplitterFetch[nPos.length-1].start(); cftn`:(&8
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//等待子线程结束 Ynt&cdK9
//int count = 0; +$an*k9
//是否结束while循环 5Od(J5`
boolean breakWhile = false; '8((;N|I^
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while(!bStop) gs<qi'B
{ #z1ch,*3;
write_nPos(); jn#N7%{Mk
Utility.sleep(500); G> 5=`
breakWhile = true; z.\[Va$@l
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for(int i=0;i<nStartPos.length;i++) Jh/M}%@|
{ 9#.NPfMF
if(!fileSplitterFetch.bDownOver) e`gGzyM
{ /ltP@*bo
breakWhile = false; }rb ]d'|
break; 8Y;zs7Y
} %`<`z yf
} Y+Q,4s
if(breakWhile) d5Eee^Qu/
break; `)xU;-
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//count++; M<|~MR
//if(count>4) 1\7"I-
// siteStop(); \!4ghev3
} ?yd(er<_f
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System.err.println("文件下载结束!"); LMhY"/hAXa
} j#.-MfB
catch(Exception e){e.printStackTrace ();} Duo#WtC
} SS<+fWXE
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//获得文件长度 P*qNRP%
public long getFileSize() BIB>U W
{ o^"d2=
int nFileLength = -1; 7l|>
try{ ~QQ23k&
URL url = new URL(siteInfoBean.getSSiteURL()); 1rzq$, O
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \t~u
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httpConnection.setRequestProperty("User-Agent","NetFox"); S0o,)`ZB
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int responseCode=httpConnection.getResponseCode(); G5e Ls
if(responseCode>=400) v!v0,?b*
{ B}xo|:f!zj
processErrorCode(responseCode); {Z{NH:^
return -2; //-2 represent access is error qh'f,#dI}
} H ]N/Y{
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String sHeader;
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for(int i=1;;i++) do?n /<@o
{ R?e7#HsJ
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); cB"F1~z
//Utility.log(in.readLine()); o3[sF
sHeader=httpConnection.getHeaderFieldKey(i); cX]{RVZo-/
if(sHeader!=null) Q)|LiCR,
{ Wg;TXs/
if(sHeader.equals("Content-Length")) $vicHuX!
{ PQI,vr'R
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +cOI`4`$
break; eVK<%r=
} Q24:G
} (Vv[
else }4ghT(C}$
break; qYrGe
} g!|E!\p
} !JQ~r@j
catch(IOException e){e.printStackTrace ();} ;<GTtt#D
catch(Exception e){e.printStackTrace ();} _"t.1+-K
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Utility.log(nFileLength); ";Xbr;N
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return nFileLength; RxeRO2
} zinl.8Uk
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//保存下载信息(文件指针位置) D]`B;aE>A*
private void write_nPos()
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{ *B~:L"N
try{ v{*X@)$
output = new DataOutputStream(new FileOutputStream(tmpFile)); _ G*x:<
output.writeInt(nStartPos.length); 3g
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for(int i=0;i<nStartPos.length;i++) - 5Wt9
{ i&G`ah>
// output.writeLong(nPos); EG8R*Cm,}
output.writeLong(fileSplitterFetch.nStartPos); GSb)|mj
output.writeLong(fileSplitterFetch.nEndPos); =FJ9wiL
} >-o:>
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output.close(); cz~FWk
} !?M_%fNE
catch(IOException e){e.printStackTrace ();} *R6eykp
catch(Exception e){e.printStackTrace ();} X@4d~6k?
} F`}w0=-*(
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//读取保存的下载信息(文件指针位置) A;nmua-Fv
private void read_nPos() =5_F9nk-
{ P FFw$\j
try{ l6U'
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); T S8E9#1a
int nCount = input.readInt(); (_5+`YsV
nStartPos = new long[nCount]; D&d:>.~u
nEndPos = new long[nCount]; snNg:rTL
for(int i=0;i<nStartPos.length;i++) 4<>:]
{ '>3RZ&O
nStartPos = input.readLong(); zLK
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nEndPos = input.readLong(); ~\IDg/9Cj
} aC]l({-0
input.close(); Sqt"G6<
} 3E@&wpj
catch(IOException e){e.printStackTrace ();} 3Qr!?=nf
catch(Exception e){e.printStackTrace ();} &rWJg6/
} EUS]Se2
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private void processErrorCode(int nErrorCode) Kd1\D!#!6
{ %,q#f#
System.err.println("Error Code : " + nErrorCode); Cx'=2Y 7
} ur[bh
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//停止文件下载 bUB6B
public void siteStop() >
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{ pr89zkYw
bStop = true; '^Np<
for(int i=0;i<nStartPos.length;i++) a~EEow;A
fileSplitterFetch.splitterStop(); VQ3&
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} rz7b%WY
} 1T?%i
//负责部分文件的抓取 Wf w9cxGkf
**FileSplitterFetch.java }X:r:{r
*/ phSP+/w
package NetFox; _)"
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import java.io.*; xT>V;aa\
import java.net.*; 1vd+p!n
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public class FileSplitterFetch extends Thread { NVPYv#uK
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String sURL; //File URL =S +:qk
long nStartPos; //File Snippet Start Position .}>[Kr
long nEndPos; //File Snippet End Position R:<AR.)K
int nThreadID; //Thread's ID M<7*\1
boolean bDownOver = false; //Downing is over lV="IP^7
boolean bStop = false; //Stop identical e]fC!>w(\
FileAccessI fileAccessI = null; //File Access interface 7si.]
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Q{kuB+s
{ Y[,C1,
this.sURL = sURL; *~X\c Z
this.nStartPos = nStart; Ms3/P| {"p
this.nEndPos = nEnd; ]F#kM21 1
nThreadID = id; xB[#
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 q=(wK&
}
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public void run() 5G[^ah<Tg
{ %"V,V3kw4
while(nStartPos < nEndPos && !bStop) (U<