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**SiteFileFetch.java C>:,\=y%
*/ o#Viz:
package NetFox; u]z87#4
import java.io.*; PY@BgL=/
import java.net.*; 5Ic'6AIz
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public class SiteFileFetch extends Thread { ~Fe$/*v
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SiteInfoBean siteInfoBean = null; //文件信息Bean 0'ge}2^
long[] nStartPos; //开始位置 KSYHG
long[] nEndPos; //结束位置 W%wc@.P
FileSplitterFetch[] fileSplitterFetch; //子线程对象 U^;|as
long nFileLength; //文件长度 )z_5I (?&
boolean bFirst = true; //是否第一次取文件 <\'aUfF v
boolean bStop = false; //停止标志 Y6E0-bL@Fe
File tmpFile; //文件下载的临时信息 *'n L[]
DataOutputStream output; //输出到文件的输出流 .WVIdVO7
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) wVmQE
public SiteFileFetch(SiteInfoBean bean) throws IOException ?Q[b1: ;Lm
{ xG1(vn83gq
siteInfoBean = bean; ri1;i= W
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 3+/^
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;)ku SH
if(tmpFile.exists ()) Bfu/w
{ VvUP;o&/
bFirst = false; eyzXHS*s;L
read_nPos(); W,5_i7vr
} X@Bg_9\i
else m7|S'{+!
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nStartPos = new long[bean.getNSplitter()]; [$D%]]/,
nEndPos = new long[bean.getNSplitter()]; IcA]B?+
} 7NMy1'-q
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} _oE 7<
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public void run() {rzvZ0-j}
{ `$Y%c1;
//获得文件长度
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//分割文件 _&RGhA
//实例FileSplitterFetch fP/;t61Z
//启动FileSplitterFetch线程 ;3\'}2^|l
//等待子线程返回 8xt8kf*k
try{ 4jw q$G
if(bFirst) f%/6kz
{ @;X#/dZe
nFileLength = getFileSize(); !q1XyQX
if(nFileLength == -1) E^B3MyS^^
{ \HL66%b[
System.err.println("File Length is not known!"); RN2z/FUf
} Fu>;hx]s
else if(nFileLength == -2) G2dPm}s ZG
{ nH}V:C
System.err.println("File is not access!"); (7C$'T-ZK
} i
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else p+;;01Z+_
{ 6~O;t'd
for(int i=0;i<nStartPos.length;i++) f{-,"6Y1
{ z
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); #G\Ae:O
} a/n~#5-
for(int i=0;i<nEndPos.length-1;i++) ETm:KbS
{ ~g}blv0q+B
nEndPos = nStartPos[i+1]; v)aV(Oa
} r-_-/O"l
nEndPos[nEndPos.length-1] = nFileLength;
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} $+ORq3
} XPLm`Q|1#t
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//启动子线程 /jSb^1\
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ~m4LL[
for(int i=0;i<nStartPos.length;i++) n]8*yoge
{ {S`Rr/E|%
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5`QfysR5
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), kyf(V)APPu
nStartPos,nEndPos,i); x@*?~1ai
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); y*E{X
fileSplitterFetch.start(); G_}oI|B
} Ckhwd
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), AZ
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ,xutI
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", L7"<a2J
nEndPos = " + nFileLength); C'PHbo:
// fileSplitterFetch[nPos.length-1].start(); ab[V->>%
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//等待子线程结束 65GC7 >[
//int count = 0; g&\;62lV%
//是否结束while循环 (!a\23
boolean breakWhile = false; _ucixM#
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while(!bStop) ,=2)1I]
{ dKmPKeJM
write_nPos(); rIX 40,`
Utility.sleep(500); !Pu7%nV.
breakWhile = true; x[R?hS,0t
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for(int i=0;i<nStartPos.length;i++) <bJ~Ol
{ ]UrlFiR
if(!fileSplitterFetch.bDownOver) GS*_m4.Ry6
{ G+WCE*
breakWhile = false; /U>8vV+C
break; t&-c?&FO\;
} fO837
} D=)qd@,K
if(breakWhile) ie/QSte
break; '.e5Ku
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//count++; )O\l3h"
//if(count>4) n65fT+;
// siteStop(); JEfhr
} 7o-}86x#
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System.err.println("文件下载结束!"); #+^l3hMK
} qz 29f
catch(Exception e){e.printStackTrace ();} hDbZ62DDN
} 1?r$Rx<R
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//获得文件长度 `Mo%)I<`=
public long getFileSize() zu1gP/
{ Xg;q\GS/<i
int nFileLength = -1; II.Wa&w}
try{ tAb3ejCo?
URL url = new URL(siteInfoBean.getSSiteURL()); O>ZJOKe
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &<hk&B
httpConnection.setRequestProperty("User-Agent","NetFox"); hG3RZN#ejq
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int responseCode=httpConnection.getResponseCode(); ]xhH:kW4
if(responseCode>=400) %Jn5M(myC
{ d_98%U+u
processErrorCode(responseCode); 5hB2:$C
return -2; //-2 represent access is error DE?@8k
} =OR&,xt
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String sHeader; }80n5X<9
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for(int i=1;;i++) Z8pZm`g)T
{ Kw>gg
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); E}]SGU"
//Utility.log(in.readLine()); _xdttO^N
sHeader=httpConnection.getHeaderFieldKey(i); ;~s@_}&
if(sHeader!=null) 73M;-qnU
{ *kDV ^RBfq
if(sHeader.equals("Content-Length")) <pUc(
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{ j MA%`*r
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); _[
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break; s_,&"->
} <zu)=W'R]
} qj?I*peK)
else wJF$<f7P
break; 9a.[>4}
} td+[Na0d
} 5gPAX $j H
catch(IOException e){e.printStackTrace ();} >2)!w
catch(Exception e){e.printStackTrace ();} zyI4E\
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Utility.log(nFileLength); 3*b!]^d:D
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return nFileLength; }Z\+Qc<<
} g/,O51f'
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//保存下载信息(文件指针位置) v aaZ
private void write_nPos() upH%-)%'
{ H
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try{ vGPaW YV
output = new DataOutputStream(new FileOutputStream(tmpFile)); )5bdWJ>l
output.writeInt(nStartPos.length); ,#-^
for(int i=0;i<nStartPos.length;i++) 9a_(_g>S
{ /t?(IcP5
// output.writeLong(nPos); iAWoKW
output.writeLong(fileSplitterFetch.nStartPos); sfNAGez
output.writeLong(fileSplitterFetch.nEndPos); BcoE&I?[m|
} <kor;exeJ
output.close(); %u|qAF2uS
} O~&l.>??
catch(IOException e){e.printStackTrace ();} k)USLA
catch(Exception e){e.printStackTrace ();} oDas~0<oh
} 8%#uZG\}
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//读取保存的下载信息(文件指针位置) 3'2}F%!Mv
private void read_nPos() 1')/ BM2
{ s/'gl
try{ _'oy
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); <`m.Vbvm"
int nCount = input.readInt(); -.WVuc`
nStartPos = new long[nCount]; `+/[0B=.
nEndPos = new long[nCount]; h Tn^:%(
for(int i=0;i<nStartPos.length;i++) B[MZPv)
{ @.iOFY
nStartPos = input.readLong(); >heih%Ar0J
nEndPos = input.readLong(); z*>CP
} JGD{cr[S
input.close(); !ZV#~t:)
} XsHl%o8,z
catch(IOException e){e.printStackTrace ();} HIeMV,.QN
catch(Exception e){e.printStackTrace ();} (;h]'I@
} 5cQBqH]
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private void processErrorCode(int nErrorCode) ;3sT>UB
{ $Y0bjS2J
System.err.println("Error Code : " + nErrorCode); o6KBJx
} *id|za|:k
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//停止文件下载 0QIocha
public void siteStop() Bv@m)$9\+3
{ y$V{yh[:
bStop = true; aLXA9?
for(int i=0;i<nStartPos.length;i++) e@,,;YO#4
fileSplitterFetch.splitterStop(); cmN0ya
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} Da-(D<[0
} Ef `LBAfOO
//负责部分文件的抓取 $'FPst8Q<
**FileSplitterFetch.java :g9z^ $g
*/ v
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package NetFox; c[y=K)<Z
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import java.io.*; Sc~kO4
import java.net.*; ?s"v0cg+
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public class FileSplitterFetch extends Thread { ^]R0d3?>\
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String sURL; //File URL C${TC+z
long nStartPos; //File Snippet Start Position r&3fSx9
long nEndPos; //File Snippet End Position t2Y~MyT/
int nThreadID; //Thread's ID |b3/63Ri-0
boolean bDownOver = false; //Downing is over usTCn3u
boolean bStop = false; //Stop identical V!<#E)-?<
FileAccessI fileAccessI = null; //File Access interface l*:p==
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException eu:_V+
{ ;W*$<~_
this.sURL = sURL; (
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this.nStartPos = nStart; #*]=
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this.nEndPos = nEnd; `A^} X
nThreadID = id; TQ2Tt"
fileAccessI = new FileAccessI(sName,nStartPos);//定位 8c|IGC
} \4p<;$'
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public void run() anwn!Eqk"
{ 4 z`5W,
while(nStartPos < nEndPos && !bStop) YWZF*,4
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