/* @XC97kGWp
**SiteFileFetch.java mC`!
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package NetFox; TzGm562o%
import java.io.*; hm>*eJNp]
import java.net.*; JB@VP{
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public class SiteFileFetch extends Thread { JxJ ntsn
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SiteInfoBean siteInfoBean = null; //文件信息Bean oE1]vX
long[] nStartPos; //开始位置 _#mqg]W '
long[] nEndPos; //结束位置 vWs c{9
FileSplitterFetch[] fileSplitterFetch; //子线程对象 B}+9U
long nFileLength; //文件长度 "|`9{/]
boolean bFirst = true; //是否第一次取文件 g/p9"eBpq
boolean bStop = false; //停止标志 lVtn$frp
File tmpFile; //文件下载的临时信息 C}_:K)5q
DataOutputStream output; //输出到文件的输出流 *J5RueUG
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) J5_Y\@
public SiteFileFetch(SiteInfoBean bean) throws IOException a<TL&
{ \/'n[3x
siteInfoBean = bean; QYXx7h r=$
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Eu.qA9,@U
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); `e>F<{
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if(tmpFile.exists ()) 2 _n*u^X:_
{ ID# qKFFW
bFirst = false; ?3,tG z)
read_nPos(); ?0<INS~
} 3}{5
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else A>%UYA
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nStartPos = new long[bean.getNSplitter()]; Pl&`&N;
nEndPos = new long[bean.getNSplitter()]; <<5 :zlb
} \Rqh|T<D
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} c_$&Uii
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public void run() 9$V_=Bo
{ ivz?-X4]
//获得文件长度 }_(^/pnk
//分割文件 >ydb?
//实例FileSplitterFetch <` j[;>O
//启动FileSplitterFetch线程 [2 w<F[
//等待子线程返回 -s%-*K+,W
try{ 0$ 9;pzr
if(bFirst) m2q;^o:J
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nFileLength = getFileSize(); 6Y_O^f
if(nFileLength == -1) roj04|
{ ,x"yZ
System.err.println("File Length is not known!"); >l< ~Z;
} ?Ga2K
else if(nFileLength == -2) <ivqe"m
{ q\'P1~
System.err.println("File is not access!"); +bc#GzVF
} ]VG84bFm
else l&??2VO/t
{ N!Wq}#&l
for(int i=0;i<nStartPos.length;i++) j)tCr Py
{ ?I2k6%a
nStartPos = (long)(i*(nFileLength/nStartPos.length)); {_toh/8)r
} +V);'"L
for(int i=0;i<nEndPos.length-1;i++) A6UdWK
{ 5Jhbf2-
nEndPos = nStartPos[i+1]; opcR~tg@r
} 56=K@$L {F
nEndPos[nEndPos.length-1] = nFileLength; akvwApn5
} SeNF!k% Y
} ;Ma/b= Y
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//启动子线程 g"!#]LLe
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; @>#{WI:"~
for(int i=0;i<nStartPos.length;i++) "gbnLKs
{ T7lj39pJq
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), j*H;a ?Y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), XAU_SPAjiw
nStartPos,nEndPos,i); 7Z`Mt9:Ht
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); V3 _b!
fileSplitterFetch.start(); <5ft6a2fQ
} [Zt#
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gN, k/U8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); TvWU[=4Yk
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", pqH(
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nEndPos = " + nFileLength); Q k;Kn
// fileSplitterFetch[nPos.length-1].start(); cbh#E)['
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//等待子线程结束 }c35FM,
//int count = 0; a81!~1A
//是否结束while循环 cZaF
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boolean breakWhile = false; 3b|7[7}&
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while(!bStop) ?z5ne??
{ rw5#e.~V
write_nPos(); `i t+D
Utility.sleep(500); SaR}\Up
breakWhile = true; waXDGdl0
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for(int i=0;i<nStartPos.length;i++) .K|P&
{ dysX
if(!fileSplitterFetch.bDownOver) H5AK n*'7
{ $ DDSN
breakWhile = false; 6K4`;
break; x1m8~F
} Kf05<J!
} uQ:ut(
if(breakWhile) ub`z7gL
break; j*;*Ka w
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//count++; j<l#qho{h
//if(count>4) ->&BcPLn
// siteStop(); }.fL$,7a
} _l#3]#
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System.err.println("文件下载结束!"); q4sl=`L5Sp
} ",~ b2]ym
catch(Exception e){e.printStackTrace ();} U;';"9C2>
} 457fT |
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//获得文件长度 eZ!yPdgy|
public long getFileSize() uIYcmF\?
{ 5wzQ?07T_
int nFileLength = -1; q?;N7P
try{ 8`:M\*
URL url = new URL(siteInfoBean.getSSiteURL()); "t5
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]{K5zSK
httpConnection.setRequestProperty("User-Agent","NetFox"); wD<vg3e[H
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int responseCode=httpConnection.getResponseCode(); 'fS?xDs-v
if(responseCode>=400) ,(j>)g2Ob
{ J*}VV9H
processErrorCode(responseCode); v$t{o{3
return -2; //-2 represent access is error m3U+ du
} o{9?:*?7
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String sHeader; CHPL>'NJzc
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for(int i=1;;i++) D8k*0ei&
{ (3AYy0J%
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); jZa25Z00
//Utility.log(in.readLine()); @ L\-ZWq
sHeader=httpConnection.getHeaderFieldKey(i); sk#9x`Rw
if(sHeader!=null) BD hLz
{ k|^vCZ<(x
if(sHeader.equals("Content-Length")) ;JAK[o8i
{ J=@hk@Nq#
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); JR/W9i
break; 2y^Uk,g
} Er`TryN|}
} *]FgfttES
else O-i4_YdVt
break; F\;2i:(
} U%Dit
} h{\t*U54'
catch(IOException e){e.printStackTrace ();} d
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catch(Exception e){e.printStackTrace ();} et@">D%;]
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Utility.log(nFileLength); -y%QRO(
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return nFileLength; yU *u
} U> W|(Y
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//保存下载信息(文件指针位置) 2>g^4(
private void write_nPos() xne]Q(B>
{ miwf&b
try{ w_\nB}_
output = new DataOutputStream(new FileOutputStream(tmpFile)); gRHtgR)T3
output.writeInt(nStartPos.length); 5;}2[3}[
for(int i=0;i<nStartPos.length;i++) Bu&So|@TL
{ Umij!=GPG^
// output.writeLong(nPos); 1bd$XnU
output.writeLong(fileSplitterFetch.nStartPos); 2v4W6R
output.writeLong(fileSplitterFetch.nEndPos); wXz\NGW
} TFo}\B7
output.close(); 'gYg~=
} L"4]Tm>zq
catch(IOException e){e.printStackTrace ();} s}s|~
catch(Exception e){e.printStackTrace ();} Is
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} ~H7!MC~K
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//读取保存的下载信息(文件指针位置) Cc2MYm8
private void read_nPos() kj-=xhJ{=
{ DjY8nePyE
try{ ,}KwP*:Z
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 5lGQ#r
int nCount = input.readInt(); p:Oz<P
nStartPos = new long[nCount]; a%v>eXc
nEndPos = new long[nCount]; v_.HGGS
for(int i=0;i<nStartPos.length;i++) e#1.T
{ ^}hJL7O'
nStartPos = input.readLong(); t-x[:i
nEndPos = input.readLong(); v G2.]?
} wE?CvL
input.close(); ~JLYhA^'+<
} @cPflb
catch(IOException e){e.printStackTrace ();} 7 I@";d8~
catch(Exception e){e.printStackTrace ();} x7HA722w
} 5\xr?`VZ
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private void processErrorCode(int nErrorCode) >otJF3zw
{ PYu$1o9+N
System.err.println("Error Code : " + nErrorCode); f}2;N
} 9)Ly}Kzx
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//停止文件下载 GB=bG%Tb
public void siteStop() 2$tQ @r
{ Y[@0qc3UO
bStop = true; #jm@N7OZ
for(int i=0;i<nStartPos.length;i++) O5M2`6|As
fileSplitterFetch.splitterStop(); []gRfM]$&
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} t3a#%'Dv
} x9&p!&*&IT
//负责部分文件的抓取 )b9_C
O}
**FileSplitterFetch.java `c9'0*-
*/ <aXoB*Y
package NetFox; W~yLl%
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import java.io.*; p?kvW42/
import java.net.*; `7\H41%\pp
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