/* Pw61_ZZ4B\
**SiteFileFetch.java ixT:)|'i
*/ B,=H@[Fj
package NetFox; /x1![$oC0
import java.io.*; ={xE!"
import java.net.*; 7!JQB
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public class SiteFileFetch extends Thread { qCnZhJ
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SiteInfoBean siteInfoBean = null; //文件信息Bean k>g_Z`%<
long[] nStartPos; //开始位置 !GNBDRr
long[] nEndPos; //结束位置 t8+X%-r
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ]@Uq=?%
long nFileLength; //文件长度 |VNnOM
boolean bFirst = true; //是否第一次取文件 AQ[GO6$,%H
boolean bStop = false; //停止标志 @("a.;1#o
File tmpFile; //文件下载的临时信息 ?TKRjgW`@_
DataOutputStream output; //输出到文件的输出流 E`uY1B[c
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Cy=Hy@C
public SiteFileFetch(SiteInfoBean bean) throws IOException dKxyA"@
{ _`:1M2=
siteInfoBean = bean; PU1Qsb5
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); trp0V4b8
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ]n~ilS.rkl
if(tmpFile.exists ()) ~"kb7Fxp
{ n*{sTT
bFirst = false; <t
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read_nPos(); :1bWVM)
} aD$v2)RR
else S_IUV)
{ TmV,&['mg
nStartPos = new long[bean.getNSplitter()]; 4QIX19{"
nEndPos = new long[bean.getNSplitter()]; Us0EG\Y
} Z
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} B2'i7Ps
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public void run() #T=LR@y
{ +w{*Xk)4
//获得文件长度 \S!e![L/
//分割文件 wlqpn(XR
//实例FileSplitterFetch k@3Q|na
//启动FileSplitterFetch线程 283F)T\Rv
//等待子线程返回 s pp f
try{ ~2QR{; XQ
if(bFirst) O4V.11FnW
{ \}"$ ?d'f
nFileLength = getFileSize(); 9|gr0~j
if(nFileLength == -1) 2h1vVF3
{ t_$2CRG#
System.err.println("File Length is not known!"); Pn>Xbe
} 'DL`Ee\
else if(nFileLength == -2) t? yz
{ iCHOv {p.
System.err.println("File is not access!"); e3nYbWBy]
} P>NF.BCq
else g9Xu@N;bL
{ K+3IWZ&+dG
for(int i=0;i<nStartPos.length;i++) IV\'e}
{ %~2YE
nStartPos = (long)(i*(nFileLength/nStartPos.length)); g|vNhq0|i
} zU
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for(int i=0;i<nEndPos.length-1;i++) F|e1"PkeoA
{ #\ X#w<\?
nEndPos = nStartPos[i+1]; rp!oO>F
} 4hTMbS_;
nEndPos[nEndPos.length-1] = nFileLength; C,ARXW1
} \1fN0e
} hM6PP7XH
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//启动子线程 rLI8pA|.
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; opy("qH
for(int i=0;i<nStartPos.length;i++) Y6zbo
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8{^WY7.'
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), %)/P^9I6
nStartPos,nEndPos,i); ;kS&A(
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~&7MkkftM
fileSplitterFetch.start(); "J[K 3
} a!"$~y$*
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3W3ZjdV+
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ?"i}^B`*
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", g" .are'7
nEndPos = " + nFileLength); o4K ~
// fileSplitterFetch[nPos.length-1].start(); ;U.hxh;+
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//等待子线程结束 Kgi<UkFP
//int count = 0; X[&Wkr8x '
//是否结束while循环 ymx>i~>7J
boolean breakWhile = false; ,^w?6?,&l}
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while(!bStop) zxbpEJzpn
{ 8&?s#5zA
write_nPos(); }%'?p<^M
Utility.sleep(500); hRrn$BdLX
breakWhile = true; XINu=N(g
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for(int i=0;i<nStartPos.length;i++) JGsx_V1t
{ :UF%K>k2
if(!fileSplitterFetch.bDownOver) 2.l Z:VLN
{ ^Eb.:}!D6
breakWhile = false; O4cr*MCb5
break; d4>Z8FF|1B
} Ay5i+)MD
}
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if(breakWhile) ER5gmmVP@p
break; QLEKsX7p>
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//count++; qln3 k`
//if(count>4) |"/8XA
// siteStop(); %_RQx2
} lOuHVa*}
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System.err.println("文件下载结束!"); ]*
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} j.w@(<=x
catch(Exception e){e.printStackTrace ();} 5q;GIw^L
}
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//获得文件长度 v/68*,z[
public long getFileSize() H%UL%l$
{ zr+zhpp
int nFileLength = -1; LcB]Xdsa(
try{ ^S UPi
URL url = new URL(siteInfoBean.getSSiteURL()); b&~4t/Vq
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]b7zJUz
httpConnection.setRequestProperty("User-Agent","NetFox"); w)kNkD
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int responseCode=httpConnection.getResponseCode(); 2Ga7$q
if(responseCode>=400) hb zC#@q
{ wKZ$iGMbz
processErrorCode(responseCode); `\T]ej}zvI
return -2; //-2 represent access is error \>:CvTzF
} x(etb<!jd
#{?PbBE}
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String sHeader; trPAYa}W
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for(int i=1;;i++) _=Z,E.EN
{ Xjo5v*P u
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Rzbj
//Utility.log(in.readLine()); s>;v!^N?u
sHeader=httpConnection.getHeaderFieldKey(i); 4zev^FR
if(sHeader!=null) bJRN;g
{ 66/3|83Z
if(sHeader.equals("Content-Length")) 5][Ztx
{ 5R@
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); \`oT#|0
break; 0B@SN)<kH
} /y _O4
} %{AO+u2i
else 01r 8$+
break; 8$85^Of
} zVXC1u9B
} Ir`eL
catch(IOException e){e.printStackTrace ();} /<@SFF.
catch(Exception e){e.printStackTrace ();} *c~T@m~DR
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Utility.log(nFileLength); WN{ 9
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return nFileLength; x(hE3S#+
} q qpgy7
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//保存下载信息(文件指针位置) OMWbZ>jB
private void write_nPos() U1DXeh~V
{ lD^]\;?
try{ =yr0bGy`-
output = new DataOutputStream(new FileOutputStream(tmpFile)); y4*U6+ #.
output.writeInt(nStartPos.length); u.d).da
for(int i=0;i<nStartPos.length;i++) C8[&S&<_<
{ &Q;sSIc
// output.writeLong(nPos); Ss~;m']68
output.writeLong(fileSplitterFetch.nStartPos); "x=f=;
output.writeLong(fileSplitterFetch.nEndPos); !/}O>v~o
} =Z P%mW&;}
output.close(); WM| dKF
} |uqf:V`z:
catch(IOException e){e.printStackTrace ();} #w,Dwy
catch(Exception e){e.printStackTrace ();} 7ePqmB<.
}
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//读取保存的下载信息(文件指针位置) ?]Pmxp
H}
private void read_nPos() CN#+U,NZV
{ lsNrAA%m
try{ {;N,t]>8M
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ]l1\? I
int nCount = input.readInt(); a:"Uh**
nStartPos = new long[nCount]; ^* J2'X38I
nEndPos = new long[nCount]; UUzYbuS>&l
for(int i=0;i<nStartPos.length;i++) =NnNN'}
{ m@"QDMHk.
nStartPos = input.readLong(); #JgH}|&a$
nEndPos = input.readLong(); W%T>SpFl
} 73V|6tmgY
input.close(); tSVc|j
} qQA}Z*(m
catch(IOException e){e.printStackTrace ();} q*F{/N**
catch(Exception e){e.printStackTrace ();} dRj| g
} LV\DBDM
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private void processErrorCode(int nErrorCode) Qr^|:U!;[z
{ O\E /. B
System.err.println("Error Code : " + nErrorCode); tE@;X=
} &j4 xgh 9
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//停止文件下载 S{;sUGcu
public void siteStop() Pl=ZRKn
{ R%Q@
bStop = true; b~'"^ Bts*
for(int i=0;i<nStartPos.length;i++) PV9pa/`@
fileSplitterFetch.splitterStop(); `S6x<J&T\/
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} pQshUm"_
} S`#w+C#EW
//负责部分文件的抓取 -j73Wz
**FileSplitterFetch.java G]+&!4
*/ k`0>36
package NetFox; )3~{L;q
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import java.io.*; G'6@+$ppS
import java.net.*; ptDY3n~'
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public class FileSplitterFetch extends Thread { 9?0^ap,T
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String sURL; //File URL _9=Yvc=
long nStartPos; //File Snippet Start Position =bHD#o|R
long nEndPos; //File Snippet End Position `glBV`?^
int nThreadID; //Thread's ID lrv3fPIW
boolean bDownOver = false; //Downing is over @xbQ Ye%J
boolean bStop = false; //Stop identical A9wh(P0\
FileAccessI fileAccessI = null; //File Access interface !q9+9 *6
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException zx-81fx+k
{ \De{9v
this.sURL = sURL; Zy o[(`y
this.nStartPos = nStart; ~xD={9BL
this.nEndPos = nEnd; VO$
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nThreadID = id; 8ELCs<xI
fileAccessI = new FileAccessI(sName,nStartPos);//定位 sC='_h
} TMig-y*[
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public void run() w,h`s.AN
{ Cq'KoN%nQ
while(nStartPos < nEndPos && !bStop) !{^PO<9
{ S4G^z}{_
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try{ #7MUJY+
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URL url = new URL(sURL); KTP8?Q"n0
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "J4WzA%i
httpConnection.setRequestProperty("User-Agent","NetFox"); Cq%IE^g<
String sProperty = "bytes="+nStartPos+"-"; ||;hciO
httpConnection.setRequestProperty("RANGE",sProperty); <$X3Hye
Utility.log(sProperty); BZR:OtR^
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InputStream input = httpConnection.getInputStream(); }[4r4 1[
//logResponseHead(httpConnection); ~g5[$r-u-u
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byte[] b = new byte[1024]; @ Wd9I;hWv
int nRead; ~},=OF-b
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) w]]8dz
{ UPG9)aF
nStartPos += fileAccessI.write(b,0,nRead); DP3PYJ%+B
//if(nThreadID == 1) BDR.AZ
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
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} 3?1`D/
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Utility.log("Thread " + nThreadID + " is over!"); eD*A)
bDownOver = true; P;Ga4Q.
//nPos = fileAccessI.write (b,0,nRead); `QyO`y=?[Y
} {&\jW!&n
catch(Exception e){e.printStackTrace ();} =5kY6%E7c
} Mz~M3$$9n
} OoA|8!CFa
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//打印回应的头信息 hM{{\yZS
public void logResponseHead(HttpURLConnection con) Uc@Ao:
{ 4`!Z$kt
for(int i=1;;i++) Jo@|"cE=
{ no<
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String header=con.getHeaderFieldKey(i); @>W(1mRi
if(header!=null) Z@]e{zO
//responseHeaders.put(header,httpConnection.getHeaderField(header)); .
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Utility.log(header+" : "+con.getHeaderField(header)); +f@U6Vv
else rEv$+pP
break; *a #rM"6P
} 4cl\^yD
} 0@H|n^Md#
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public void splitterStop() F.w5S!5Q
{ .HkL2m
bStop = true; ?TU }~}
} t.`@{R$hoA
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