/* Mky8qVQ2
**SiteFileFetch.java #TSLgV'U
*/ W(tXq
package NetFox; aw:0R=S,>
import java.io.*; {*CLWs4
import java.net.*; p^``hP:J
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public class SiteFileFetch extends Thread { MXhRnVz"W
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SiteInfoBean siteInfoBean = null; //文件信息Bean way-Q7
long[] nStartPos; //开始位置 Mhw\i&*U
long[] nEndPos; //结束位置 8Lpy`He
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Zb#
long nFileLength; //文件长度 {#y HL
boolean bFirst = true; //是否第一次取文件 ]H|1quT
boolean bStop = false; //停止标志 .*g;2.-qv&
File tmpFile; //文件下载的临时信息 |Y1<P^
DataOutputStream output; //输出到文件的输出流 ;3_Q7;y
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) G:rM_q9\u
public SiteFileFetch(SiteInfoBean bean) throws IOException 6l $o^R^D
{ '17u
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siteInfoBean = bean; n1W}h@>8
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); :r/rByd'
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *lG$B@;rc|
if(tmpFile.exists ()) HnqZ7%jeN
{ U-s6h;^O
bFirst = false; M$gy J!Pb
read_nPos(); f i!wrvO
} n{Mj<\kL
else (Qq$ql27
{ Q\:'gx8`
nStartPos = new long[bean.getNSplitter()]; tI C_/
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nEndPos = new long[bean.getNSplitter()]; q&
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public void run() O'-lBf+<
{ 1|cmmUM-'v
//获得文件长度 <STjB,_s
//分割文件 CsR~qQ
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//实例FileSplitterFetch uYMW5k_,>
//启动FileSplitterFetch线程 ^J~}KOH
//等待子线程返回 7F'61}qL
try{ *<#&ne8
if(bFirst) a}c(#ZLs
{ 1
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nFileLength = getFileSize(); r% '2a+}D
if(nFileLength == -1) 5#f&WL*U@
{ D#m+w
System.err.println("File Length is not known!"); oaBfq8,;
} 8a)EL*LH`
else if(nFileLength == -2) ESASsRzk
{ $@&bK2@.(
System.err.println("File is not access!"); ,_lwT}*w
} @3S2Xb{ra1
else |$b 4{
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for(int i=0;i<nStartPos.length;i++) ` ?6m0|\@
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); v @N8v
} KQ9:lJKr
for(int i=0;i<nEndPos.length-1;i++) G:e} >'
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nEndPos = nStartPos[i+1]; IB*%PMTF
} U0N[~yW(t1
nEndPos[nEndPos.length-1] = nFileLength;
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} d=4MqX r
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//启动子线程 ) L{Tn8
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; {U(h]'
for(int i=0;i<nStartPos.length;i++) S5Px9&N8(
{ tc,7yo\".
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 329xo03-[
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), )sS<%Xf
nStartPos,nEndPos,i); @e0Q+ t
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $0W0+A$
fileSplitterFetch.start(); 'b^:"\t'Rh
} t=e0z^2i+
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2iG(v._x
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $z,bA*j9
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", -owfuS?i=
nEndPos = " + nFileLength); #i]@"R
// fileSplitterFetch[nPos.length-1].start(); }>
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//等待子线程结束 eO9nn9lql
//int count = 0; g*tLqV
//是否结束while循环 1VZ>*Tl
boolean breakWhile = false; <?J7Z|
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while(!bStop) OVh/t#On
{ ``E;!r="v
write_nPos(); fVN}7PH7+
Utility.sleep(500); i ('EBO
breakWhile = true; =4%C?(\
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for(int i=0;i<nStartPos.length;i++) {oJa8~P
{ V[bc-m
if(!fileSplitterFetch.bDownOver) \S@A
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{ k?8W2fC
breakWhile = false; )
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break; JZnWzqFw
} 0Its;|
} mcX akWmi
if(breakWhile) 'OihA^e
break; 7S7!
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//count++; i-=ff
//if(count>4) y;>I'e
// siteStop(); !fV6KkV
} :hr@>Y~r
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System.err.println("文件下载结束!"); B*AMo5
} R`?^%1^N
catch(Exception e){e.printStackTrace ();} 6;b 'j\jG
} [;2:lbPx
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//获得文件长度 jlP7'xt1%
public long getFileSize() ,qHG1#^
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int nFileLength = -1;
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try{ A-u5
URL url = new URL(siteInfoBean.getSSiteURL()); =iQm_g
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); W.R'2R#
httpConnection.setRequestProperty("User-Agent","NetFox"); Rp|&1nS
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int responseCode=httpConnection.getResponseCode(); ^0
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if(responseCode>=400) k$ M4NF~$
{ @~XlI1g$i
processErrorCode(responseCode); ,+BgY4OY
return -2; //-2 represent access is error &}$D[ 4N
} eEh0T%9K
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