/* '_)NI
**SiteFileFetch.java ub^v,S8O
*/ fNz*E|]8&
package NetFox; iwb]mJUA
import java.io.*; .{6?%lt
import java.net.*; @o&.]FZs
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public class SiteFileFetch extends Thread { 4h:R+o ^H^
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SiteInfoBean siteInfoBean = null; //文件信息Bean nv WTx4oy
long[] nStartPos; //开始位置 yxfV|ox
long[] nEndPos; //结束位置 qucw%hJ r
FileSplitterFetch[] fileSplitterFetch; //子线程对象 [5&zyIi
long nFileLength; //文件长度 s^nPSY!
boolean bFirst = true; //是否第一次取文件 ,>-Q#
boolean bStop = false; //停止标志 Zkn$D:
File tmpFile; //文件下载的临时信息 ]KX _a1e
DataOutputStream output; //输出到文件的输出流 <a>\.d9#)7
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) A/kRw'6
public SiteFileFetch(SiteInfoBean bean) throws IOException w3j51v` 0'
{ ![O@{/
siteInfoBean = bean; IEb"tsel
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); K*&?+_v
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); F^iv1b
if(tmpFile.exists ()) gemjLuf
{ RfPRCIo
bFirst = false; I"*;fdm
read_nPos(); \<ohe w
} (`0dO8
else @d5G\1(%
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nStartPos = new long[bean.getNSplitter()]; Iq&S6l <0
nEndPos = new long[bean.getNSplitter()]; lLuAZoH
} =6#tJgg8
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} Rg*zUfu5%o
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public void run() ;0}8vs
{ 'TPRGX~&
//获得文件长度 ?L|Jc_E
//分割文件 +cAN4
//实例FileSplitterFetch T7W*S-IW
//启动FileSplitterFetch线程 \Fhk>
//等待子线程返回 hv xvwV1
try{ q9n0bw^N
if(bFirst) 51oZw%os=
{ &dSw[C#f
nFileLength = getFileSize(); -la~p~8
if(nFileLength == -1) &lYKi3}x
{ 7#Qa/[? D
System.err.println("File Length is not known!"); *b"(r|Ko
} Y=3:Q%X
else if(nFileLength == -2) ^&t(O1.-
{ qL^}t_>
System.err.println("File is not access!"); XezO_V
}
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else sV7dgvVd
{ pk'@!|g%=
for(int i=0;i<nStartPos.length;i++) ?V_Qa0k
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); 3mn0
} "r0z(j
for(int i=0;i<nEndPos.length-1;i++) $ 1(u.Ud
{ JbYv <
nEndPos = nStartPos[i+1]; l;>#O
} Yt*M|0bL
nEndPos[nEndPos.length-1] = nFileLength; "fLGXbNQ
} GK}?*Lfs
} 4 'rWy~`
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//启动子线程 e4NT
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; |bDN~c:/
for(int i=0;i<nStartPos.length;i++) bl\44VK2'
{ 8aGZ% UI
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >c7/E
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #RJy
nStartPos,nEndPos,i); .]Z M2
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); mU_?}}aK,
fileSplitterFetch.start(); c}mJ6Pt
} VO(Ck\i}
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), sVkR7
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %R;cXs4r
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", #`a-b<uz
nEndPos = " + nFileLength); !N,Z3p>Q
// fileSplitterFetch[nPos.length-1].start(); s~/]nz]"J
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//等待子线程结束 ,-CDF)~G=3
//int count = 0; vyV n5s
//是否结束while循环 RYE::[O7
boolean breakWhile = false; &X+V}
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while(!bStop) Z/wh?K3y
{ Dr`\
write_nPos(); &t%CuU]/@
Utility.sleep(500); B<1*p,z
breakWhile = true; `1EBnL_1
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for(int i=0;i<nStartPos.length;i++) 'n:Ft
{ %~p_bKd~
if(!fileSplitterFetch.bDownOver) N/{A'
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{ . F#mT h
breakWhile = false; Q77qrx3
break; 8kJ k5
} '0
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} v/+ dx/
if(breakWhile) #j-,#P@
break; ,zXL8T
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//count++; X""'}X|O
//if(count>4) oTI*mGR1Z
// siteStop(); TP{a*ke^5,
} sxThz7#i)
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System.err.println("文件下载结束!"); tEN]0`
} mApn(&
catch(Exception e){e.printStackTrace ();} x(]s#D!)
} a+{g~/z;,Q
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//获得文件长度 {Y/|7Cl0
public long getFileSize() eU%5CVH.v
{ u/.srK!K
int nFileLength = -1; qh7o;x~,
try{ "[[fQpe4@
URL url = new URL(siteInfoBean.getSSiteURL()); e982IP
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); nrt0[E-&~
httpConnection.setRequestProperty("User-Agent","NetFox"); l42m81x"
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int responseCode=httpConnection.getResponseCode(); /#:RYM'Tu
if(responseCode>=400) ?G?=,tV
{ |Y'$+[TE
processErrorCode(responseCode); K6Gc)jp:b
return -2; //-2 represent access is error ,6M-xSDs
} A^K,[8VX
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String sHeader; SAH\'v0
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for(int i=1;;i++) awkVjyq X
{ izC>-
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Y43#];
//Utility.log(in.readLine()); LV]\{'
sHeader=httpConnection.getHeaderFieldKey(i); mSj[t
if(sHeader!=null) mr('zpkRq
{ (|[3/_!;v
if(sHeader.equals("Content-Length")) nZ bg
{ h[Iu_#HMa
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); :.35pp,0
break; ("lcL2Bq
} Vbj?:29A
} PzV(e)~7
else '^/E2+
break; Bw_Ih|y,w
} &)X<yd0
} <rC#1wR4
catch(IOException e){e.printStackTrace ();} 4X\*kF%
catch(Exception e){e.printStackTrace ();} ]Ea7b
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Utility.log(nFileLength); vlPE8U=
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