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**SiteFileFetch.java P^)q=A8Z#
*/ X`JVR"=4
package NetFox; ?*u*de[,
import java.io.*; S6D^3n
import java.net.*; gl7|H&&xV
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public class SiteFileFetch extends Thread { z|N3G E(.@
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SiteInfoBean siteInfoBean = null; //文件信息Bean yI3kvh
long[] nStartPos; //开始位置 BRv x[u
long[] nEndPos; //结束位置 T
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 |E3X
long nFileLength; //文件长度 ynwG\V
boolean bFirst = true; //是否第一次取文件 /*rhtrS)
boolean bStop = false; //停止标志 QHlU|dR)Ry
File tmpFile; //文件下载的临时信息 bC6oqF'#
DataOutputStream output; //输出到文件的输出流 bt/ =Kq#
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) p $`92Be/
public SiteFileFetch(SiteInfoBean bean) throws IOException rcN 9.1
{ (u1m]WYL
siteInfoBean = bean; `{Tk@A_yd
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); p/GVTf
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ZH 6\><My
if(tmpFile.exists ()) l.+yn91%>
{ 3V<&|
bFirst = false; DN] v_u+}
read_nPos(); )>a B
} kg97S
else :iF%cy.
{ ,,4
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nStartPos = new long[bean.getNSplitter()]; |`/TBQz:r
nEndPos = new long[bean.getNSplitter()]; .qv'6G
} +&=?BC}L9^
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} (eWPis[
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public void run() &qM[g9
{ gABr@>Vv
//获得文件长度 >SbK.Q@ei
//分割文件 )Kd%\PP
//实例FileSplitterFetch "sUyHt -&
//启动FileSplitterFetch线程 h*i9m o
//等待子线程返回 /~p+j{0L3W
try{ =/0=$\Ws
if(bFirst) K }$&:nao
{ 3L5r*fa
nFileLength = getFileSize(); !ZXUPH
if(nFileLength == -1) pv)`%<
{ cmwPuK$
System.err.println("File Length is not known!"); TFQ!7'xk)
} /8'S1!zc
else if(nFileLength == -2) 1fU,5+PH
{ dtt ~ Bd
System.err.println("File is not access!"); cC{"<fYF
} 0%`4px4J
else RO(TvZ0pE
{ RW'nUL?_\
for(int i=0;i<nStartPos.length;i++) 07v!Zj
{ 5*g]qJF
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 9LC&6Q5O&
} xg@NQI@7
for(int i=0;i<nEndPos.length-1;i++) ),}AI/j;zY
{ ?/hZb"6W
nEndPos = nStartPos[i+1]; yR5XJ;Tct
} SkQswH
nEndPos[nEndPos.length-1] = nFileLength; EbNd=Z'J
} pc]J[ S?P
} XRN+`J
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//启动子线程 @C_KV0i
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )FN;+"IJ
for(int i=0;i<nStartPos.length;i++) KJn!Ap
{ e.d
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bpAv1udX-W
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), $tqJ/:I
nStartPos,nEndPos,i); \c,pEXG
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); I{'f|+1
fileSplitterFetch.start(); qy1F*kY
} &<TzGB*
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Hy:V`>
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); YIhm$A"z0"
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 2-*V=El
nEndPos = " + nFileLength); J5Z%ImiT^O
// fileSplitterFetch[nPos.length-1].start(); ^ <`(lyph
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//等待子线程结束 Uh
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//int count = 0; PXoz*)tk
//是否结束while循环 :(|'S4z
boolean breakWhile = false; E_z;s3AXQ
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while(!bStop) {@Yb%{+
{ B_`y|sn
write_nPos(); IA zZ1#/3
Utility.sleep(500); +gd2|`#
breakWhile = true; ^ >x|z.
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for(int i=0;i<nStartPos.length;i++) -/C)l)V}
{ O43YY2
if(!fileSplitterFetch.bDownOver) ^[E'1$D
{ Ox!U8g8c
breakWhile = false; LWoG4s?w
break; h5_G4J{1
} 0-Y:v(|.
} +yob)%
if(breakWhile) O=cxNy-I
break; ,fDEz9-,
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//count++; EI>6Nh
//if(count>4) %=we`&
// siteStop();
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} Cb t{H}I3
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System.err.println("文件下载结束!"); 7M_U2cd|TD
} gbeghLP[?
catch(Exception e){e.printStackTrace ();} YpAg
} |'ln?D:&
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//获得文件长度 ?<&O0'Q
public long getFileSize() kqYa*| l
{ fA%z*\
int nFileLength = -1; yq-=],h
try{ 5RH2"*8T
URL url = new URL(siteInfoBean.getSSiteURL()); >Iewx
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,Y?sfp
httpConnection.setRequestProperty("User-Agent","NetFox"); =\#%j|9N9
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int responseCode=httpConnection.getResponseCode(); }eQRN<}P
if(responseCode>=400) iB0WEj[?
{ ,r^M?>
processErrorCode(responseCode); r"2V
return -2; //-2 represent access is error \I-#1M
} TC~Q
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String sHeader; /){KOCBl;
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for(int i=1;;i++) #*$P'r
{ (iJ1
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5J)=} e
//Utility.log(in.readLine()); q+KzIde|%
sHeader=httpConnection.getHeaderFieldKey(i); "LYh7:0s!k
if(sHeader!=null) R3)57OyV
{ Q-Ux<#
if(sHeader.equals("Content-Length")) \l"&A
{ ?&LZB}1R
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); s](aNe2j
break; _zt19%Wg
} fJ\sguZ
} C3hv*
else x^|V af
break; IEjP<pLe
} O1 .w,U
} <^b7cOFQ
catch(IOException e){e.printStackTrace ();} G2LK]
catch(Exception e){e.printStackTrace ();} KfBTL!0#
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Utility.log(nFileLength); o-xDh7v
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return nFileLength; pME{jD
} O%1v)AT&\
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//保存下载信息(文件指针位置) tx"sH]n
private void write_nPos() -U<Upn)2
{ 6{[pou&
try{ "G-1>:
output = new DataOutputStream(new FileOutputStream(tmpFile)); fP3_d
output.writeInt(nStartPos.length); B63pgPX
for(int i=0;i<nStartPos.length;i++) lPLz@Up~
{ ze_{=Cv&Y
// output.writeLong(nPos); OA:%lC!
output.writeLong(fileSplitterFetch.nStartPos); VIP7OHJh
output.writeLong(fileSplitterFetch.nEndPos); KZ!3j_pKy
} DjU9
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output.close(); J};z85B
} +(xeT+J
catch(IOException e){e.printStackTrace ();} -p-B2?)A
catch(Exception e){e.printStackTrace ();} `X,yM-(
} +\li*G]:J
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//读取保存的下载信息(文件指针位置) Q^p|Ldj
private void read_nPos() h/x0]@M&
{ @i^~0A#q*
try{ p^(&qk?ut
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ut>4U'.H
int nCount = input.readInt(); v7%X@j]ji
nStartPos = new long[nCount]; 5L:1A2Z?c
nEndPos = new long[nCount]; |AlR^N
for(int i=0;i<nStartPos.length;i++) e*+FpW@
{ [4fU+D2\d
nStartPos = input.readLong(); iK?b~Q
nEndPos = input.readLong(); i,13b
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} [1 Ydo`
input.close(); &V|>dLT>A
} 3nY1[,
catch(IOException e){e.printStackTrace ();} tbnH,*
catch(Exception e){e.printStackTrace ();} ~gz^Cdh
} JFgoN,xn
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private void processErrorCode(int nErrorCode) {pb>$G:gfx
{ =AVgIv
System.err.println("Error Code : " + nErrorCode); :V2bS
} a[lY S{
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//停止文件下载 &V>fYgui
public void siteStop() !v]b(z`Y
{ %{6LUn
bStop = true; OMwsbp&
for(int i=0;i<nStartPos.length;i++) 7Cjd.0T=(
fileSplitterFetch.splitterStop(); lTU$0CG
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} IrMl:+t\
} RE.r4uOJg
//负责部分文件的抓取 uxg9yp@|
**FileSplitterFetch.java X0-IRJ[
*/ v(OBXa9
package NetFox; FgL,k
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import java.io.*; Rl|4S[
import java.net.*; [i0Hm)Bd3
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public class FileSplitterFetch extends Thread { _LwOOZj
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String sURL; //File URL kY]W
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long nStartPos; //File Snippet Start Position jlFk@:y4
long nEndPos; //File Snippet End Position !ZDzEP*
int nThreadID; //Thread's ID m\/ Tj0e
boolean bDownOver = false; //Downing is over O4<g%.HC6
boolean bStop = false; //Stop identical Ev!{n
FileAccessI fileAccessI = null; //File Access interface @|a>&~xX
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException K^r)CCO
{ 7u\*_mrv
this.sURL = sURL; x\2?ym@
this.nStartPos = nStart; GRy-+#,b"
this.nEndPos = nEnd; Ifk#/d
nThreadID = id; s] /tYJYl
fileAccessI = new FileAccessI(sName,nStartPos);//定位 7VK}Dy/Vvn
} .oEmU+
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public void run() nN$Y(2ZN
{ uS&|"*pR
while(nStartPos < nEndPos && !bStop) Ax oD8|
{ 6 \B0^
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try{ HE<1v@jW
URL url = new URL(sURL); ,:+dg(\r
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +.RKi!
httpConnection.setRequestProperty("User-Agent","NetFox"); ]4+s$rG
String sProperty = "bytes="+nStartPos+"-"; PL{Q!QJK'
httpConnection.setRequestProperty("RANGE",sProperty); 74<!&t
Utility.log(sProperty); PNW \*;j
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InputStream input = httpConnection.getInputStream(); EL3|u64GO
//logResponseHead(httpConnection); @v\*AYr'M
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byte[] b = new byte[1024]; * y^OV_n-8
int nRead; ,2oF:H
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) R~bC,`Bh
{ c62=* ] ,
nStartPos += fileAccessI.write(b,0,nRead); HaA1z}?n
//if(nThreadID == 1) = sAn,ri
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p8wyEHB
} D+lzFn$3
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Utility.log("Thread " + nThreadID + " is over!"); {;2i.m1
bDownOver = true; $-+/$!
//nPos = fileAccessI.write (b,0,nRead); \b}~2oX
} MH|]\
catch(Exception e){e.printStackTrace ();} MJj4Hd
} {F&-7u0
} >-E<