/* M MAAHo
**SiteFileFetch.java PM~bM3Ei
*/ $Hp.{jw
package NetFox; j';n8|Y9
import java.io.*; $42Au2Jg
import java.net.*; E7rX1YdR
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public class SiteFileFetch extends Thread { H9%l?r5
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SiteInfoBean siteInfoBean = null; //文件信息Bean 13ipaz
long[] nStartPos; //开始位置 4dW3'"R"L
long[] nEndPos; //结束位置 yDd=&
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 4JGE2ArR
long nFileLength; //文件长度 xJvLuzUD
boolean bFirst = true; //是否第一次取文件 u=vh
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boolean bStop = false; //停止标志 8W-]t1O%!
File tmpFile; //文件下载的临时信息 }US7Nw
DataOutputStream output; //输出到文件的输出流 uyL72($
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =MMCf0
public SiteFileFetch(SiteInfoBean bean) throws IOException HS{P?~:=U
{ M'^(3#ZU
siteInfoBean = bean; 54=}GnZN
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); -"F0eV+y
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 8dc538:q}
if(tmpFile.exists ()) _kh>Z
{ BiA>QQ
bFirst = false; Ru)(dvk}S
read_nPos(); e@[9C(5E"
} >RM
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else [/?c@N,
{ v-ThdE$G#
nStartPos = new long[bean.getNSplitter()];
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nEndPos = new long[bean.getNSplitter()]; 6/|U
} Y.E?;iS
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} bKYY{V55
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public void run() KZECo1
{ 5QR}IxQ
//获得文件长度 GXO4x|08F
//分割文件 *0O<bm
//实例FileSplitterFetch B9wp*:.
//启动FileSplitterFetch线程 'w}p[(
//等待子线程返回 JdtPY~k0
try{ <R>Q4&we(
if(bFirst) NvcHv7,
{ 9KXym }
nFileLength = getFileSize(); QS\Uq(Ja\
if(nFileLength == -1) H]BAW *}
{ SAP;9*f1\
System.err.println("File Length is not known!"); 8AryIgy>@
} D^nxtuT*
else if(nFileLength == -2) >Z}@7$(7!~
{ ja?s@Y}-9s
System.err.println("File is not access!"); VW {,:Ya
} }bp.OV-+
else 3a%xn4P
{ 5|CzX X#U
for(int i=0;i<nStartPos.length;i++) U>oW~Z
{ 0k%hY{
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 'X54dXS?l
} }0Y`|H\v
for(int i=0;i<nEndPos.length-1;i++) NJ<N %hcjK
{ `y'aH
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nEndPos = nStartPos[i+1]; ?<E0zM+
} :aH%bk
nEndPos[nEndPos.length-1] = nFileLength; MZ)T0|S_
} AhR0zg
} ~,T+JX
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//启动子线程 goB;EWz
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; gd
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for(int i=0;i<nStartPos.length;i++)
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{ _1P`]+K\D$
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), PzLJ/QER
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), YN/u9[=`
nStartPos,nEndPos,i); C*a,<`
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `T=1<Tw c
fileSplitterFetch.start(); $}db /hY*
} 9T$u+GX'
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V#NtBreN
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ER_ 3'
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", b )Tl*
nEndPos = " + nFileLength); >zFD$
// fileSplitterFetch[nPos.length-1].start(); B_cgWJ*4
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//等待子线程结束 4Ppop
//int count = 0; &;s<dDQK
//是否结束while循环 SAy{YOLtl
boolean breakWhile = false; s047"Q
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while(!bStop) i$["aP~G
{ D!S8oKW
write_nPos(); ^@K
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Utility.sleep(500); rEmwKZF'
breakWhile = true; Si]X
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for(int i=0;i<nStartPos.length;i++) p=vV4 C:
{ 'aZASPn[
if(!fileSplitterFetch.bDownOver) S_$nCyaH2
{ eKyqU9
breakWhile = false; SetX#e?q~
break; p.5e:
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} 2Y$
} :kt/$S^-
if(breakWhile) a>w~FUm*
break; 94y9W#
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//count++; j$mz3Yk
//if(count>4) 0X#+#[W
// siteStop(); !UVk9
} \OT6L'l],
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System.err.println("文件下载结束!"); k/@Tr
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} NZP7r;u
catch(Exception e){e.printStackTrace ();} =-5[Hn%
} @i{]4rk lv
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//获得文件长度 &Q~)]|t
public long getFileSize() UhdqY]
{ :T5A84/C
int nFileLength = -1; Fo(y7$33*
try{ uRpBeH]Z"
URL url = new URL(siteInfoBean.getSSiteURL()); S2Vx e@b)
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F)7j@h^
httpConnection.setRequestProperty("User-Agent","NetFox"); 9$wAm89
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int responseCode=httpConnection.getResponseCode(); c})wD+1
if(responseCode>=400) u-:MVEm
{ LZa%
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processErrorCode(responseCode); xj7vI&u.
return -2; //-2 represent access is error n$xszuNJ`
} MOeoU1Hn
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String sHeader; 5VZjDg?
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for(int i=1;;i++) ntZ~m
{ "[.ne)/MC
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +KP_yUq[
//Utility.log(in.readLine()); fK"iF@=Z`
sHeader=httpConnection.getHeaderFieldKey(i); qX?[mdCHZ
if(sHeader!=null)
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{ >4c` UW
if(sHeader.equals("Content-Length")) &oEyixe
{ fbV@= (y?
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); .`+yo0O:
break; OJ>iq@>
} WN\PX!K9
} 6+e4<sy[E
else {Zl4C;c
break; h7*O.Opm=
} zofx+g\(W
} UKj`_a6
catch(IOException e){e.printStackTrace ();} =Epq%,4nG
catch(Exception e){e.printStackTrace ();} hkF^?AJ
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Utility.log(nFileLength); QF&6?e06p0
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return nFileLength; _#vGs:-x&
} ^)<