/* .')^4\
**SiteFileFetch.java 6X$nZM|g,
*/ 15%6;K?b
package NetFox; n#B}p*G
import java.io.*; wB+F/]]|N
import java.net.*; ^==Tv+T9U
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public class SiteFileFetch extends Thread { o@C|*TXN
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SiteInfoBean siteInfoBean = null; //文件信息Bean }iLi5Qkx
long[] nStartPos; //开始位置 fG{3S:TQq
long[] nEndPos; //结束位置
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 $>Ow<!c
long nFileLength; //文件长度 x@:98P
boolean bFirst = true; //是否第一次取文件 kV3LFPf>0
boolean bStop = false; //停止标志 ;Rm';IW$
File tmpFile; //文件下载的临时信息 n7zM;@{7
DataOutputStream output; //输出到文件的输出流 7nM<P4\
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ^;?w<9Y
public SiteFileFetch(SiteInfoBean bean) throws IOException $XKUw"%
{ VW^q|B yB
siteInfoBean = bean; T8x /&g''
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); y5VohVa`
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); y{XNB}E
if(tmpFile.exists ()) %{me<\(
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bFirst = false; gLx?0eBBA
read_nPos(); -W:@3\{
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else [~;wCW,1
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nStartPos = new long[bean.getNSplitter()]; L$ jii
nEndPos = new long[bean.getNSplitter()]; Upm#:i|"
} HD,6
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public void run() j}8^gz]
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//获得文件长度 =sS=
//分割文件 D^{jXNDNO
//实例FileSplitterFetch Gr3 q
//启动FileSplitterFetch线程 ]0{,P
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//等待子线程返回 h^J :k
try{ p%OVl[^jp
if(bFirst) J.0&gP V
{ &3*r-9BZ
nFileLength = getFileSize(); -{yG+1
if(nFileLength == -1) +ERuZc$3,
{ LI"N^K'z
System.err.println("File Length is not known!"); S:c
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} ![Vrbe P
else if(nFileLength == -2) ,yi@?lc
{ $% W.=a'5
System.err.println("File is not access!"); kioIyV\=
} -1R7 8(1
else m# ^).+
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for(int i=0;i<nStartPos.length;i++) d~b@F&mf
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); c>C!vAg
} ==bT0-M.~
for(int i=0;i<nEndPos.length-1;i++) E7]a#
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nEndPos = nStartPos[i+1]; eBe5H
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} vNU[ K%U
nEndPos[nEndPos.length-1] = nFileLength; #;'*W$Wk2
} 0LP>3"Sm
} g;y*F;0@
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//启动子线程 oMN
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length];
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for(int i=0;i<nStartPos.length;i++) "l6Ob
{ "04:1J`
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1sfs!b&E
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Ude)$PAe%
nStartPos,nEndPos,i); Uz7V2r%]
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); I4zm{ 1g
fileSplitterFetch.start(); c5{3
} +#g4Crb
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), g^:7mG6C
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Q!W+vh
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", &F +hh{
nEndPos = " + nFileLength); SwhArvS
// fileSplitterFetch[nPos.length-1].start(); f<@`{oP@
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//等待子线程结束 `I5So-^&z
//int count = 0; $60]RCu
//是否结束while循环 B{Lcx ~
boolean breakWhile = false; qTnk>g_oS&
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while(!bStop) IN!IjInaT@
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write_nPos(); 0S>U_#-
Utility.sleep(500); `~ R%}ID
breakWhile = true; :FI4GR*?
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for(int i=0;i<nStartPos.length;i++) 8_@#5
{ _PeBV<
if(!fileSplitterFetch.bDownOver) e$+?l~
{ F7zBm53
breakWhile = false; A!Ls<D.
break; H%:~&_D
} 8}kY^"*&X
} T};fy+iq
if(breakWhile) OK}+:Y
break; kK[m=rTx1$
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//count++; .?YLD+\A
//if(count>4) 45;{tS.z,B
// siteStop(); :3# t;
} Qr4c':8
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System.err.println("文件下载结束!"); g6kVHxh-
} <-:gaA`KM
catch(Exception e){e.printStackTrace ();} HV^*_
} eVZ/3o
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//获得文件长度 :b&O{>M]Y
public long getFileSize() ~97T0{E3
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int nFileLength = -1; j`Xe0U<
try{ n
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URL url = new URL(siteInfoBean.getSSiteURL()); (0Xgv3wd
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); (q!tI*}
httpConnection.setRequestProperty("User-Agent","NetFox"); c:Tw.WA
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int responseCode=httpConnection.getResponseCode(); UGNFWZ c
if(responseCode>=400) |5
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{ _
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processErrorCode(responseCode); gu[3L
return -2; //-2 represent access is error M4rOnIJ
} :_%
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String sHeader; jOppru5U
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for(int i=1;;i++) `k}
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); t0*JinKI
//Utility.log(in.readLine()); g|r:+%,M
sHeader=httpConnection.getHeaderFieldKey(i); )E<<