/* Blzvn19'h
**SiteFileFetch.java G$i)ELs
*/ 950N\Y@u
package NetFox; %|(c?`2|
import java.io.*; WsV"`ij#
import java.net.*; p
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public class SiteFileFetch extends Thread { {s0%XG1$
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SiteInfoBean siteInfoBean = null; //文件信息Bean H\ejW@<;h
long[] nStartPos; //开始位置 TSP%5v;Dh
long[] nEndPos; //结束位置 0Xh_.PF
FileSplitterFetch[] fileSplitterFetch; //子线程对象 edp
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long nFileLength; //文件长度 VjM3M<!g>M
boolean bFirst = true; //是否第一次取文件 hHE~/U
boolean bStop = false; //停止标志 h.>SVQzU
File tmpFile; //文件下载的临时信息 ,\\ba_*z
DataOutputStream output; //输出到文件的输出流 ~Xxmj!nOf
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) <(lA
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public SiteFileFetch(SiteInfoBean bean) throws IOException tf~B,?
{ Kk8}m;
siteInfoBean = bean; ~U&NY7.@
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); AYA{_^#+3
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); C.92FiC
if(tmpFile.exists ()) !lgL=Ys(
{ H>EM3cFU
bFirst = false; TBBnsj6e
read_nPos(); {'O><4
} SO0\d0?u
else $~G,T
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nStartPos = new long[bean.getNSplitter()]; j HHWq>=d
nEndPos = new long[bean.getNSplitter()]; R#d~a;j
} Zok{ndO@|f
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public void run() Q4"\k.
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{ n(F!t,S1i
//获得文件长度 q`<:CfCt
//分割文件 P9cx&Hk9
//实例FileSplitterFetch 2^WJ1: A
//启动FileSplitterFetch线程 l/X_CM8y~
//等待子线程返回 l'+3
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try{ S:_Ms{S
if(bFirst) C$y6^/7)
{ YvU%OO-+,
nFileLength = getFileSize(); 15g!Q
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if(nFileLength == -1) ,&t+D-s<f
{ te+} j7SU
System.err.println("File Length is not known!"); V,&%[H [
} l$;"yVdks
else if(nFileLength == -2) 9* )&hhBs,
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System.err.println("File is not access!"); \Z]+j@9
} X8|H5Y:
else RPz[3y
{ ~`OX}h/Z
for(int i=0;i<nStartPos.length;i++)
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); p&<Ssc
} U6]#RxH
for(int i=0;i<nEndPos.length-1;i++) buGBqx[
{ Ia&*JYM[
nEndPos = nStartPos[i+1]; OpUfK4U)
} bWswF<y-
nEndPos[nEndPos.length-1] = nFileLength; 7AqgX0)
} Tru{8]uMH
} 7Q .Su
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//启动子线程 kt6x"'"1
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; _\WR3Q!V
for(int i=0;i<nStartPos.length;i++) Dh
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8MJJ w;
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), AjVC{\Ik
nStartPos,nEndPos,i); m!V,W*RNr
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hLO)-ueb
fileSplitterFetch.start(); yE$PLM
} %6m/ve
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), uwNJM
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); |#TU"$;
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @?,x3\N-
nEndPos = " + nFileLength); )(}[S:`
// fileSplitterFetch[nPos.length-1].start(); -H-U8/W C
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//等待子线程结束 D#g-mqar:
//int count = 0; E'QAsU8pP
//是否结束while循环 ;vH2r~
boolean breakWhile = false; 0]DOiA
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while(!bStop) Q"QRF5Ue
{ E2e"A
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write_nPos(); F]$ Nu
Utility.sleep(500); mrTf["K
breakWhile = true; Ni_H1G
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for(int i=0;i<nStartPos.length;i++) y~9wxK
{ ~MG6evm &
if(!fileSplitterFetch.bDownOver) 42Z:J 0
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breakWhile = false; !dqC6a
break; r&u1-%%9[
} Za|7gt];l
} _H+]G"k/r
if(breakWhile) +b|F_
break; P3oYk_oW
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//count++; pzF_g-B
//if(count>4) [OC(~b
// siteStop(); y1V}c,
} W{,fpm
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System.err.println("文件下载结束!"); A4j,]hOD
} 4 9qa
catch(Exception e){e.printStackTrace ();} TegdB|y7O
} ]cRvdUGv
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//获得文件长度 3D|Lb]=
public long getFileSize() Gs:g
{ [L%Ltmx
int nFileLength = -1;
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URL url = new URL(siteInfoBean.getSSiteURL()); a"( Ws]K
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); WIWo4[(
httpConnection.setRequestProperty("User-Agent","NetFox"); b_+o1Zy`
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int responseCode=httpConnection.getResponseCode(); [@K'}\U^+
if(responseCode>=400) hb[ThQ
{ ?$pNd uE
processErrorCode(responseCode); rz|T2K
return -2; //-2 represent access is error &8VH m?h
} !)M}(I}
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String sHeader; Q& [!+s:2J
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for(int i=1;;i++) c)EYXo
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); o$@/@r
//Utility.log(in.readLine()); `I7s|9-=
sHeader=httpConnection.getHeaderFieldKey(i); XT^=v6^H
if(sHeader!=null) ]}`t~#Irz
{ `xM*cJTZ
if(sHeader.equals("Content-Length")) MTYV~S4/
{ w,1N ;R&
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9SC1A -nF
break; ^gVQ6=z%
} XfcYcN
} < F5VJ
else _a&gbSQv
break; wBt7S!>G
} rfDGS%!O%
} |q4=*X q
catch(IOException e){e.printStackTrace ();} g$Tsht(rHD
catch(Exception e){e.printStackTrace ();} TOiLv.Dor
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Utility.log(nFileLength); b^R:q7ea
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return nFileLength; p5]W2i.,
} ;adZ*'6u
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//保存下载信息(文件指针位置) 3]S*p ErY
private void write_nPos() :$I"n\
{ 0\i\G|5
try{ 6jpzyf=~
output = new DataOutputStream(new FileOutputStream(tmpFile)); &>-'|(m+2
output.writeInt(nStartPos.length); u^Cls!C
for(int i=0;i<nStartPos.length;i++) 8wWp+Hk
{ f@sC~A. 9\
// output.writeLong(nPos); mxqZj8VuH
output.writeLong(fileSplitterFetch.nStartPos); '@t,G,FJ
output.writeLong(fileSplitterFetch.nEndPos); w/NT 5
} \BBs;z[/
output.close(); kQI'kL8>
} :V(C+bm *
catch(IOException e){e.printStackTrace ();} X
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catch(Exception e){e.printStackTrace ();} LR&MhG7
} 2IJniS=[>
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//读取保存的下载信息(文件指针位置) Q`i@['?p
private void read_nPos() $2FU<w$5
{ U*nB=
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); "1|geO|
int nCount = input.readInt(); h.-L_!1B7
nStartPos = new long[nCount]; &. _"rhz
nEndPos = new long[nCount]; `K VSYC
for(int i=0;i<nStartPos.length;i++) 39^+;Mev
{ )EMlGM'2q
nStartPos = input.readLong(); $`OyGeq"T
nEndPos = input.readLong(); d/GSG%zB
} @o[ZJ4>*
input.close(); m
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} Q'U!
catch(IOException e){e.printStackTrace ();} gZHgL7@
catch(Exception e){e.printStackTrace ();} N5 sR
} AXcmN
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private void processErrorCode(int nErrorCode) Xf ^_y(?
{ ttr`
System.err.println("Error Code : " + nErrorCode); &SIf