/* (VEpVn3{
**SiteFileFetch.java |\IN.W[EL
*/ K<Iv:5-2
package NetFox; n+q!l&&
import java.io.*; "x*egI
import java.net.*; PV\+P6aIb
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public class SiteFileFetch extends Thread { 0C
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SiteInfoBean siteInfoBean = null; //文件信息Bean S:oi<F
long[] nStartPos; //开始位置 :AF =<X*5
long[] nEndPos; //结束位置 ;=;
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 {rH@gz|@i
long nFileLength; //文件长度 6GSI"M6s
boolean bFirst = true; //是否第一次取文件 LzXmb 7A
boolean bStop = false; //停止标志 %9N7Ln|%
File tmpFile; //文件下载的临时信息 VE{3} S
DataOutputStream output; //输出到文件的输出流 'o+L41
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Vjp1RWb
public SiteFileFetch(SiteInfoBean bean) throws IOException %GA"GYL9'
{ 33ef/MElD$
siteInfoBean = bean; {kCw+eXn?
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); p~^D\jR.
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 'H&2HXw&2
if(tmpFile.exists ()) XJ` ]ga
{ Z/0fXn})
bFirst = false; %gyLCTw
read_nPos(); {/(D$"j(S
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else bg&zo;Ck8T
{ ;/fF,L{c
nStartPos = new long[bean.getNSplitter()]; sRx63{
nEndPos = new long[bean.getNSplitter()]; y7
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} %]DP#~7[|
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} o+QE8H43
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public void run() S=<}:#;u0
{ 1#*a:F&re
//获得文件长度 M/ni6%x
//分割文件 Jz.NHiLct1
//实例FileSplitterFetch v~V5`%
//启动FileSplitterFetch线程 Vq5k+3W+
//等待子线程返回 CBOi`bEf
try{ L,`Lggq-
if(bFirst) ;8*`{F[
{ q<[_T
nFileLength = getFileSize(); FsV'Cu@!U
if(nFileLength == -1) WD2]&g
{ pP?MWe
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System.err.println("File Length is not known!"); KJ=6 n%6
} ^xHTW g%9
else if(nFileLength == -2) v'qG26
{ Co9QW/'i
System.err.println("File is not access!"); hMUs"
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else E4W -hq~
{ 8a="/J
for(int i=0;i<nStartPos.length;i++) XKttZOiGT
{ i;jw\ed
nStartPos = (long)(i*(nFileLength/nStartPos.length)); u7[ykyV
} 9:,\gw>F
for(int i=0;i<nEndPos.length-1;i++) %Nhx;{
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nEndPos = nStartPos[i+1]; g[Ib,la_a
} ang~<
nEndPos[nEndPos.length-1] = nFileLength; Xr2ou5zAn
} /X(t1 +
} 8X`tU<Ab
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//启动子线程 TUDr\' @/f
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ? glSC$b
for(int i=0;i<nStartPos.length;i++) IOoz^/'
{ j!4et;
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), a1.Ptf eW|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), _$f9]bab
nStartPos,nEndPos,i); ]*FVz$>XM
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); vj\d A2!~
fileSplitterFetch.start(); Ph}|dGb
} %D8ZO0J7H
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7L@K _ZJ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); M^iU;vo
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ryCI>vJz
nEndPos = " + nFileLength); Y$Y_fjd_
// fileSplitterFetch[nPos.length-1].start(); &)vC;$vD`
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//等待子线程结束 ;SaX;!`39+
//int count = 0; C;`XlQG `
//是否结束while循环 {R61cD,n
boolean breakWhile = false; ?jt}*q>X]
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while(!bStop) '|*?*6q
{ Yd= a}T
write_nPos(); 8&~~j7p,
Utility.sleep(500); k^%B5
breakWhile = true; )m{Ye0!RD
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for(int i=0;i<nStartPos.length;i++) S_v'hlrrT
{ 9Xl5@%uz?z
if(!fileSplitterFetch.bDownOver) &jczO-R^
{ +|@rD/I6
breakWhile = false; l)w Hl%p
break; w'fT=v)
} DUe&r,(4O
} E)7F\ w
if(breakWhile) S:q3QgU=X
break; .G(llA}
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//count++;
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//if(count>4) I}t3
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// siteStop(); 0zCw>wBPW
} r"a5(Q;n
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System.err.println("文件下载结束!"); V$icWu
} Vc%R$E%
catch(Exception e){e.printStackTrace ();} qc!MG_{Y
} #8bsxx!s
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//获得文件长度 PN<C=gAe
public long getFileSize() bb`':3%
{ aKlUX
int nFileLength = -1; ;?~$h-9)
try{ 1q3(
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URL url = new URL(siteInfoBean.getSSiteURL()); R:AA,^Z
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *" 98L+
httpConnection.setRequestProperty("User-Agent","NetFox"); >,gvb5
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int responseCode=httpConnection.getResponseCode(); ym/fFm6h
if(responseCode>=400) Q33"u/-v
{ %#Z/2<_
processErrorCode(responseCode); TO*BH^5R
return -2; //-2 represent access is error ^o@,3__7Q
} Y<b-9ai<w
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String sHeader; 2Nm>5l
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for(int i=1;;i++) je4 w=]JV
{ tpEI(9>
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5P+t^\
//Utility.log(in.readLine()); ]cC[-F[
sHeader=httpConnection.getHeaderFieldKey(i); R@yyur~'_(
if(sHeader!=null) TtDg*kZ
{ 1w0OKaF5
if(sHeader.equals("Content-Length")) )wtaKF.-
{ ;.Ie#Vr1N
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); -MugnB6
break; u=NSsTP&
} 0\~Z5k`IT
} %|l8f>3[
else w[-Fm+A>
break; e{9jn>\,a
} j ! NO|&k
} -/dEsgO
catch(IOException e){e.printStackTrace ();} C4#rA.nF|
catch(Exception e){e.printStackTrace ();} oM1
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Utility.log(nFileLength); lhYn5d)DV
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return nFileLength; Y'3}G<'%
} asgF1?r
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//保存下载信息(文件指针位置) O:/yAc`
private void write_nPos() 0l#)fJo
{ qxJQPz
try{ 9H]Lpi^OH
output = new DataOutputStream(new FileOutputStream(tmpFile)); b2&