/* AgSAjBP
**SiteFileFetch.java s>L.V2!$0
*/ 7t<MHdw
package NetFox; h| wdx(4
import java.io.*; eh]syeKBj
import java.net.*; .lP',hn
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public class SiteFileFetch extends Thread { M")/6 PH8
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SiteInfoBean siteInfoBean = null; //文件信息Bean (g X8iKl
long[] nStartPos; //开始位置 WR"1d\m:
long[] nEndPos; //结束位置 7[qL~BT+
FileSplitterFetch[] fileSplitterFetch; //子线程对象 qA`@~\qh"
long nFileLength; //文件长度 \6?a
boolean bFirst = true; //是否第一次取文件 zixG}'
boolean bStop = false; //停止标志 KT<$E!@
File tmpFile; //文件下载的临时信息 Q/0gd? U?
DataOutputStream output; //输出到文件的输出流 nC%qdzT
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) },JJ!3
public SiteFileFetch(SiteInfoBean bean) throws IOException 7/QK"0
{ sHk>ek]2I
siteInfoBean = bean; "H`Be
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Z10}xqi!X
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Is}kCf
if(tmpFile.exists ()) a%b E}
{ Rb:<?&7ZzN
bFirst = false; 76<mP*5
read_nPos(); ;e5PoLc
} T~Bj],k_
else u4SL:IH{D
{ EUcD[Rv
nStartPos = new long[bean.getNSplitter()]; {b4`\I@<
nEndPos = new long[bean.getNSplitter()]; wDW%v@
} *w*>\ZhOm
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} XJ3sqcS
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public void run() bK~Toz<k
{ *OFG3 uM
//获得文件长度 1a{r1([)
//分割文件 B^P&+,\[}
//实例FileSplitterFetch &*+$38XE^
//启动FileSplitterFetch线程 0`c{9gY.
//等待子线程返回 2y^:T'p
try{ -2J37
if(bFirst) 0g|5s
{ -#;xfJE
nFileLength = getFileSize(); a0sz$u
if(nFileLength == -1) 4l%W]'
{ V27RK-.N!
System.err.println("File Length is not known!"); S}%z0g<
} Wmcd{MOS
else if(nFileLength == -2) d:K\W[$Bz
{ F.$z7ee@
System.err.println("File is not access!"); }p2iF2g9`
} Gg9MAK\ C9
else =cjO]
{ ]Rxo}A
for(int i=0;i<nStartPos.length;i++) vFR*3$R
{ 9N9&y^SmD
nStartPos = (long)(i*(nFileLength/nStartPos.length)); fuUtM_11
} .4WJk>g
for(int i=0;i<nEndPos.length-1;i++) T*C25l;w
{ 4y7_P0}:B
nEndPos = nStartPos[i+1]; -]zb3P
} nD*iSb*
nEndPos[nEndPos.length-1] = nFileLength; uWdF7|PN7
} 04|ZwX$>+
} <.4(#Ebd
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//启动子线程 >;c);|'}q
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; [q[37;ZEQ
for(int i=0;i<nStartPos.length;i++) H"AL@=
{ ")uKDq
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9!Mh(KtQ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), (=7"zECq#
nStartPos,nEndPos,i); -\?-
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); xWzybuLp
fileSplitterFetch.start(); m-
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} 66eJp-5e8
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), K}@rte
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); r]p3DQ
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", !9/`PcNIpy
nEndPos = " + nFileLength); QNMZR
// fileSplitterFetch[nPos.length-1].start(); <>\|hno}
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//等待子线程结束 tpcB}HUv
//int count = 0; J Ah!#S(
//是否结束while循环 Zc~7R`v7}
boolean breakWhile = false; OU,FU@6,7w
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while(!bStop)
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{ ?{f6su@rW
write_nPos(); o1(;"5MM
Utility.sleep(500); '1b 1N5~
breakWhile = true; jC>ZMy8U)4
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for(int i=0;i<nStartPos.length;i++) $"/l*H\h
{ >EJ{ *
if(!fileSplitterFetch.bDownOver) KUZi3\p9W>
{ wCLniCt
breakWhile = false; I8J>>H'#A
break; H;nzo3x
} (t@)`N{
} *Sj)9mp
if(breakWhile) u$%C`v>
break; :;eOhZ=_
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//count++; ^vd$j-kjTP
//if(count>4) u9S*2'
// siteStop(); }=bzUA`C
} jD S\
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System.err.println("文件下载结束!"); a^J(TW/
} ]C,j80+pK
catch(Exception e){e.printStackTrace ();} }VJ>}i*
} ,g7O
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//获得文件长度 z]8Mv(eL
public long getFileSize() JE9v+a{7
{ ZNw|5u^N
int nFileLength = -1; )m7%cyfC
try{ D|ze0A@
URL url = new URL(siteInfoBean.getSSiteURL()); o!UB x<4
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !I?C8)
httpConnection.setRequestProperty("User-Agent","NetFox"); 2: gh q
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int responseCode=httpConnection.getResponseCode(); c.]QIIdK
if(responseCode>=400) A2ye
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{ BGibBF^
processErrorCode(responseCode); H I|a88
return -2; //-2 represent access is error aYa`ex
} F!#)l*OX;
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String sHeader; E6~VHQa2?
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for(int i=1;;i++) ~Re4zU
{ Fc`IRPW<
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 'Jf
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//Utility.log(in.readLine()); n+=qT$w)
sHeader=httpConnection.getHeaderFieldKey(i); $;Fx Zkp
if(sHeader!=null) Xf&YcHo
{ X:Z3R0
if(sHeader.equals("Content-Length")) eWv:wNouk
{ QoxYzln
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ,HDhP
break; x] wi&
} `e'wWV
}
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else FA-cTF[,(
break; K]$PRg1|3
} ||X3g"2W9
} V6dq8Z"h
catch(IOException e){e.printStackTrace ();} y$7Ys:R~
catch(Exception e){e.printStackTrace ();} %_s)Gw&sq
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Utility.log(nFileLength); ^?Xs!kJP
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return nFileLength; A-4;$
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} 9RlJf=Z#H
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//保存下载信息(文件指针位置) )=GPhC/sw
private void write_nPos() u=nd7:bv
{ K.QSt
try{ QD%xmP
output = new DataOutputStream(new FileOutputStream(tmpFile)); 4$VDJ
output.writeInt(nStartPos.length); 5OWyxO3{
for(int i=0;i<nStartPos.length;i++) )e0kr46
{ BmpAH}%T
// output.writeLong(nPos); "v?F4&\ 8
output.writeLong(fileSplitterFetch.nStartPos); o7E|wS
output.writeLong(fileSplitterFetch.nEndPos); P,pC Z+H
} Rnwm6nu
output.close(); '-A;B.GV%
} 5XX)8gAo
catch(IOException e){e.printStackTrace ();} >6Uc|D
catch(Exception e){e.printStackTrace ();} L,A+"
} JqO1 a?H
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//读取保存的下载信息(文件指针位置) A^).i_
private void read_nPos() '8)kFR^9
{ 8'@5X-nD
try{ =M-=94
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); vzs4tkG
int nCount = input.readInt(); fWJpy#/^*K
nStartPos = new long[nCount]; OcV,pJ
nEndPos = new long[nCount]; KS(H_&j
for(int i=0;i<nStartPos.length;i++) AjEy@/
{ (
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nStartPos = input.readLong(); TsT5BC63
nEndPos = input.readLong(); 1LS1 ZY
} G8vDy1`q6
input.close(); G 3U[)("
} w.58=Pr
catch(IOException e){e.printStackTrace ();} 'MW%\W;
catch(Exception e){e.printStackTrace ();} M *w{PjU
} ( gg )?
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private void processErrorCode(int nErrorCode) ,&@GxiU
{ *_I`{9~'
System.err.println("Error Code : " + nErrorCode); %`k [xz
} AR( gI]1
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//停止文件下载 |HT7m5tu4
public void siteStop() &C