/* 9LFg":
**SiteFileFetch.java U{;i 864:}
*/ E:i3
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package NetFox; 2D-*Z=5^
import java.io.*; [A3hrSw
import java.net.*; $<yb~z7J
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public class SiteFileFetch extends Thread { /yI~(8bO
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SiteInfoBean siteInfoBean = null; //文件信息Bean UdY9*k
long[] nStartPos; //开始位置 jR48.W
long[] nEndPos; //结束位置 _2TIan}
FileSplitterFetch[] fileSplitterFetch; //子线程对象 eF2<L [9
long nFileLength; //文件长度 TX*P*-'
boolean bFirst = true; //是否第一次取文件 8n'C@#{WV
boolean bStop = false; //停止标志 @z2RMEC~
File tmpFile; //文件下载的临时信息 +/Z:L$C6
DataOutputStream output; //输出到文件的输出流 X&McNO6"
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Ohjqdv@
public SiteFileFetch(SiteInfoBean bean) throws IOException Z|~<B4#c
{ EatpORq
siteInfoBean = bean; *m|]c4
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ad"&c*m[
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *+J&ebSTN
if(tmpFile.exists ()) ,+q5e^P
{ v&?Bqj
bFirst = false; plp).Gq
read_nPos(); }q~A( u
} Z|j8:Ohz
else \V&ly/\
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{ 7{b|+0W
nStartPos = new long[bean.getNSplitter()]; :Z/ig%
nEndPos = new long[bean.getNSplitter()]; a|fyo#L
} ;`xu)08a
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} ` "9Y.KU
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public void run() \F<]l6E
{ *D\nsJ*g
//获得文件长度 Nl(Aa5:!
//分割文件 V^f'4*~'
//实例FileSplitterFetch 4BCZ~_
//启动FileSplitterFetch线程 ,2]6cP(6qQ
//等待子线程返回 HL_MuyE
try{ L
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if(bFirst) #7g~Um%p
{ %i^%D
nFileLength = getFileSize(); $x 2t0@
if(nFileLength == -1) t%=ylEPW
{ "r|O /
System.err.println("File Length is not known!"); Et7AAV*8g
}
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else if(nFileLength == -2) .Oim7JQ8
{ lk+)-J-lj'
System.err.println("File is not access!"); AU
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} gsAcn
else , X|oCD
{ 3"<{YEj8U
for(int i=0;i<nStartPos.length;i++) K J~f ~2;
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); m2 OP=z@)
} Ot/Y?=j~
for(int i=0;i<nEndPos.length-1;i++) ]zD/W%c
{ <;acWT?(
nEndPos = nStartPos[i+1]; 2Gx&ECa,
} #$#{QEh0}
nEndPos[nEndPos.length-1] = nFileLength; mDo]5 i<
} ?B[Z9Ef"8l
} / P{f#rV5
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//启动子线程 MEo+S
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Ib!`ChZ
for(int i=0;i<nStartPos.length;i++) } #$Y^ +UN
{ (D))?jnC
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^%C.S :
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), []u!piW
nStartPos,nEndPos,i); ,. E:mm
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3J@#V '
fileSplitterFetch.start(); :k JSu{p
} ) I@gy
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), AU)Qk$c
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); y/Nvts2!C
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Z|3l2ucl
nEndPos = " + nFileLength); bluC P|
// fileSplitterFetch[nPos.length-1].start(); kR'!;}s
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//等待子线程结束 lKe aI
//int count = 0; o6svSS
//是否结束while循环 U-|gtND
boolean breakWhile = false; Yr[1-Oy/k
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while(!bStop) D?9=q
{ %1e`R*I
write_nPos(); K34y3i_
Utility.sleep(500); bu\,2t}B
breakWhile = true; )0/DY
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for(int i=0;i<nStartPos.length;i++) ,A_itRHH
{ G;,2cu
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if(!fileSplitterFetch.bDownOver) kigc+R
{ qk<tLvD_'
breakWhile = false; ZLBfQ+pM)
break; _:=w6jCk
} [7L1y) I(
} ?EKYKLwr
if(breakWhile) ynDa4HB
break; '0w'||#1
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//count++; ,TP^i 0
//if(count>4) @{~x:P5g
// siteStop(); ~D
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} _RhCVoeB
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System.err.println("文件下载结束!"); Lv#DIQ8y
} 44wY5nYNt
catch(Exception e){e.printStackTrace ();} :0#!=
} eF:6k qg
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//获得文件长度 |1;0q<Ka
public long getFileSize() dZv-lMYBE
{ 6rdm=8WFA
int nFileLength = -1; }LQ&AIRN
try{ .rax`@\8
URL url = new URL(siteInfoBean.getSSiteURL()); \'j%q\Bl;
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); llQDZ}T
httpConnection.setRequestProperty("User-Agent","NetFox"); kg+"Ta[9
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int responseCode=httpConnection.getResponseCode(); ;J2=6np
if(responseCode>=400) }1epn#O_4
{ v-&^G3
processErrorCode(responseCode); Zj!S('hSY
return -2; //-2 represent access is error &eyFApM[Z
} Rl<~:,D
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String sHeader; /.Gx
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for(int i=1;;i++) ${mHbqN
{ $wC]S4C
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); wGAN"K:e
//Utility.log(in.readLine()); / ijj;9EB
sHeader=httpConnection.getHeaderFieldKey(i); oP_'0h0X
if(sHeader!=null) e)>Z&e,3
{ 0Tg/R4dI
if(sHeader.equals("Content-Length")) sd.:PE <
{ +-`Q}~s+
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); rVFAwbR
break; e2 Ba@e-
} swe6AQ-
}
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else W<v?D6dFq
break; JrS/"QSA
} M
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} q<.^DO~$L
catch(IOException e){e.printStackTrace ();} (9@6M8A
catch(Exception e){e.printStackTrace ();} 1% EIP-z
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Utility.log(nFileLength); Ku 56TH!Py
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return nFileLength; 0.bmVN<
} B1J+`R3OX
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//保存下载信息(文件指针位置) w,9$*=k
private void write_nPos() X62z>mM
{ +
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try{ qEX59v
output = new DataOutputStream(new FileOutputStream(tmpFile)); }=;N3Q" #y
output.writeInt(nStartPos.length); s%;18V:pi
for(int i=0;i<nStartPos.length;i++) x>p=1(L
{ jHTaG%oh
// output.writeLong(nPos); s
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output.writeLong(fileSplitterFetch.nStartPos); C`7HC2Is
output.writeLong(fileSplitterFetch.nEndPos); 6HFA2~A
} bG;vl;C
output.close(); l*xA5ObV
} $Y)|&,
catch(IOException e){e.printStackTrace ();} Xq+7l5LP
catch(Exception e){e.printStackTrace ();} ,k+jx53XV
} _N0x&9S$
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//读取保存的下载信息(文件指针位置) ^FF{71;
private void read_nPos() jZe]zdml
{ p"JITH:G
try{ QWxCNt:^?
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); cSoZq4
int nCount = input.readInt(); k;l^wM
nStartPos = new long[nCount]; &3S;5{7_e
nEndPos = new long[nCount]; <o^mQq&
for(int i=0;i<nStartPos.length;i++) OA&N WAm4
{ ?^5W.`Y2i
nStartPos = input.readLong(); 9O~1o?ni
nEndPos = input.readLong(); D?8t'3no
} 5"]PwC
input.close(); ~+V]MT
} y/4 4((O
catch(IOException e){e.printStackTrace ();} >c8zMd
catch(Exception e){e.printStackTrace ();} VBBqoyP
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} ;x|4Tm
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private void processErrorCode(int nErrorCode) "JbFbcj
{ :G$NQ*(z
System.err.println("Error Code : " + nErrorCode); l{_>?]S5
} Pg|q{fc
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//停止文件下载 O/iew3YF
public void siteStop() Xj?j1R>GB
{ 0ot=BlMu
bStop = true; 6(<AuhFu
for(int i=0;i<nStartPos.length;i++) C
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fileSplitterFetch.splitterStop(); s[8<@I*u
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} h&;\
} fb&K.6"
//负责部分文件的抓取 +SZ#s:#SE
**FileSplitterFetch.java OKxPf]~4E
*/ ?Ju=L|
package NetFox; xBR2tDi%
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import java.io.*; w9H%u0V?
import java.net.*; 3Akb|r
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public class FileSplitterFetch extends Thread { >c;qIP)Z
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String sURL; //File URL oRmN|d ~4
long nStartPos; //File Snippet Start Position F~)xZN3=
long nEndPos; //File Snippet End Position qf(!3
int nThreadID; //Thread's ID G{YJ(6etZ
boolean bDownOver = false; //Downing is over Bn-%).-ED
boolean bStop = false; //Stop identical Zb<DgJ=3
FileAccessI fileAccessI = null; //File Access interface SN\;&(?G
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException )I$_wB!UV
{ JG0TbM1(Bt
this.sURL = sURL; 9Z6O{
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this.nStartPos = nStart; GriL< =?t
this.nEndPos = nEnd; ^mkplp
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nThreadID = id; !
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 HVh+Zk
} mY
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public void run() Z\4l+.R`
{ s{Ryh.IyI
while(nStartPos < nEndPos && !bStop) Y]^[|e8
{ 57%:0loW
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try{ Q~ te`
URL url = new URL(sURL); [1G4he%
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DLJu%5F
httpConnection.setRequestProperty("User-Agent","NetFox"); rP^2MH"
String sProperty = "bytes="+nStartPos+"-"; k%VV(P]sT
httpConnection.setRequestProperty("RANGE",sProperty); 0 \&4?
Utility.log(sProperty); vb\ UP&Ip
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InputStream input = httpConnection.getInputStream(); <