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**SiteFileFetch.java 'kh%^_FH7
*/ ahV_4;yF
package NetFox; (b{
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import java.io.*; {.!:T+'Xi\
import java.net.*; mDM]RAub)
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public class SiteFileFetch extends Thread { 5n9F\T5
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SiteInfoBean siteInfoBean = null; //文件信息Bean ;^rZ"2U
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long[] nStartPos; //开始位置 CiMy_`H
long[] nEndPos; //结束位置 3i s.c)
FileSplitterFetch[] fileSplitterFetch; //子线程对象 cA/2,i
long nFileLength; //文件长度 dUe"qH29s
boolean bFirst = true; //是否第一次取文件 {Ua5bSbh
boolean bStop = false; //停止标志 {X"X.`p
File tmpFile; //文件下载的临时信息 8"<!8Img
DataOutputStream output; //输出到文件的输出流 W
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) N`zHe*=[~
public SiteFileFetch(SiteInfoBean bean) throws IOException g:2/!tujL
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siteInfoBean = bean; rBny*! n
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); BR0bf5T/
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 9s7B1Pf
if(tmpFile.exists ()) Pu9.Uwx
{ XkK16aLE
bFirst = false; &[Sw:{&*jv
read_nPos(); KX9ZwsC0
} /4T%s
else ?v")Z0 ~
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nStartPos = new long[bean.getNSplitter()]; ,]cd%w9
nEndPos = new long[bean.getNSplitter()]; D:F!;n9
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public void run() lhjPS!A~
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//获得文件长度 nB:Bw8U"Q
//分割文件 de`6%%|
//实例FileSplitterFetch ZO;]Zt]
//启动FileSplitterFetch线程 Awr]@%I
//等待子线程返回 5S7Z]DXiT8
try{ CY7REF
if(bFirst) v(t&8)Uu
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nFileLength = getFileSize(); I+<; Dsp
if(nFileLength == -1) =k8A7P
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System.err.println("File Length is not known!"); @eMyq1ZU
} ,2cw9?<
else if(nFileLength == -2) +Rh'VZJs
{ ZU@V]+ww
System.err.println("File is not access!"); |aVv Lz
} z[k2&=c
else DMf9wB
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for(int i=0;i<nStartPos.length;i++) xp&I~YPH
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); q OXL(
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for(int i=0;i<nEndPos.length-1;i++) u(o @_6
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nEndPos = nStartPos[i+1]; C9nNziws
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nEndPos[nEndPos.length-1] = nFileLength; x``!t>)O
} 1";~"p2(
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//启动子线程 @%TQ/L^|
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ECSC,oJ
for(int i=0;i<nStartPos.length;i++) K:Ap|F
{ [Ytia#Vv
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), YW'Y=*
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), _9-Ajv
nStartPos,nEndPos,i); ]I]dwi_g)
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _<~05Eh
fileSplitterFetch.start(); '0=U+Egp
} 4 '+)9&g
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~W#f,mf
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $K iMu
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", kQb0pfYs
nEndPos = " + nFileLength); *\`C!r
// fileSplitterFetch[nPos.length-1].start(); jsG9{/Ov3
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//等待子线程结束 zZRqb/20
//int count = 0; ysa"f+/
//是否结束while循环 6RF01z|~_
boolean breakWhile = false; ENmo^O#,u
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while(!bStop) y#MLxm
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write_nPos(); CVUDN2
Utility.sleep(500); A1@-;/H3
breakWhile = true; sDF J
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for(int i=0;i<nStartPos.length;i++) a}
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if(!fileSplitterFetch.bDownOver) ]@f6O*&=
{ M&K@><6k,k
breakWhile = false; c`>\R<Z ]
break; :X!(^a;]
} Q?>#sN,
} i~.[iZf|
if(breakWhile) W@G[ gS\T
break; XX F9oy8
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//count++; -Z Z$
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//if(count>4)
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// siteStop(); w(yU\
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} Ao\Vh\rQkq
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System.err.println("文件下载结束!"); -r2cK{Hhp&
} 5bw]cv$i
catch(Exception e){e.printStackTrace ();} 9t[278B6
} Z^|C~lp;n
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//获得文件长度 MT5A%|H e
public long getFileSize() h<M7[p=
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int nFileLength = -1; HB}gn2.1&
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URL url = new URL(siteInfoBean.getSSiteURL()); =LI:S|[4
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); v8m`jxII64
httpConnection.setRequestProperty("User-Agent","NetFox"); :'}@Al9=>
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int responseCode=httpConnection.getResponseCode(); GKZN}bOm\
if(responseCode>=400) )MSZ2)(
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processErrorCode(responseCode); n*<v]1
return -2; //-2 represent access is error L&kr