/* "n`z`{<n
**SiteFileFetch.java aEvbGo
*/ )LIn1o_,
package NetFox; &
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import java.io.*; /\# f@Sg
import java.net.*; 1 =C12
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public class SiteFileFetch extends Thread { h!K"
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SiteInfoBean siteInfoBean = null; //文件信息Bean |[Fb&x
long[] nStartPos; //开始位置 SFd_k9
long[] nEndPos; //结束位置 ){w{#
FileSplitterFetch[] fileSplitterFetch; //子线程对象 gqy>;A:kO
long nFileLength; //文件长度 -5+Yz9pv[
boolean bFirst = true; //是否第一次取文件 1' U
boolean bStop = false; //停止标志 *2->>"kh
File tmpFile; //文件下载的临时信息 ?L7DVwVa,I
DataOutputStream output; //输出到文件的输出流 2=n`z)R
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) T+@i;M
public SiteFileFetch(SiteInfoBean bean) throws IOException <
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{ 69)"T{7
siteInfoBean = bean; &Wcz~Gx3Q
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); qb=2J5su
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &BrFcXF
if(tmpFile.exists ()) Lr"cO|F
{ h7q{i|5
bFirst = false; 5rB>)p05[
read_nPos(); 5l1R")0`t_
} 7<!x:G?C
else K+!e1
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{ 4Ii5V
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nStartPos = new long[bean.getNSplitter()]; jaodcT0
nEndPos = new long[bean.getNSplitter()]; IRx%L?
} "WQ6[;&V
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} r^}0qO,XM
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public void run() xm1di@
{ j67ppt
//获得文件长度 ah,f~.X_|
//分割文件 'Xj^cX
//实例FileSplitterFetch d=qVIpZ
//启动FileSplitterFetch线程 V&:x+swt
//等待子线程返回 /qy6YF8;y
try{ <i</pA
if(bFirst) !>> A@3
{ qzbW0AM[M
nFileLength = getFileSize(); $.4A?,d
if(nFileLength == -1) L<@*6QH
{ e[u}Vf
System.err.println("File Length is not known!"); bKM*4M=k
} >"bW'
else if(nFileLength == -2) iSezrN
{ <ytzGDx
System.err.println("File is not access!"); zhs@YMY
} 5H
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else vRC >=y*=
{ 5["3[h
for(int i=0;i<nStartPos.length;i++) 5uQ+'*xN%
{ f;BY%$
nStartPos = (long)(i*(nFileLength/nStartPos.length)); D1Zy Js#
} 4h|*r !
for(int i=0;i<nEndPos.length-1;i++) g]: [^p
{ 0j(U &
nEndPos = nStartPos[i+1]; cWx`y><
} >dJuk6J&c&
nEndPos[nEndPos.length-1] = nFileLength; VqW5VLa
} ?SFQx\/
} j
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//启动子线程 ; >H1A
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; CYy=f-
for(int i=0;i<nStartPos.length;i++) NT5=%X]
{ I*.nwV<
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :Q("
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), F*@2 )
nStartPos,nEndPos,i); iKrk?B<
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); we`BqZV
fileSplitterFetch.start(); #W)m({}
} ?g4Rk9<!i
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V /2NIh
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); '[liZCg
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CdRJ@Lf
nEndPos = " + nFileLength); ?s$d("~
// fileSplitterFetch[nPos.length-1].start(); GxD`M2
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//等待子线程结束 EQ~<NzRp=
//int count = 0; %50)?J=zB
//是否结束while循环 y@~ VE5N
boolean breakWhile = false; }8tF.QjR|
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while(!bStop) <A Hzs
{ R;Dj70g
write_nPos(); ;LP3
Utility.sleep(500); "JSIn"/
breakWhile = true; C @<T(`o
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for(int i=0;i<nStartPos.length;i++) xA7~"q&u
{ tcXXo&ZS
if(!fileSplitterFetch.bDownOver) yZNG>1N
{ BZQ}c<Nl
breakWhile = false; oFP8s[B
break; ugTsI~aE
} (+(@P*c1
} ?ld&}|W~
if(breakWhile) 6ScB:8M
break; GB Yy^wjU
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//count++; 1!.-/
//if(count>4) dX/7n=
// siteStop(); zJy=1r
} YdO*5Gb6
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System.err.println("文件下载结束!"); P#V!hfM
} G1jj:]1
catch(Exception e){e.printStackTrace ();} e&ysj:W5
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} 46NuT]6/4
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//获得文件长度 #&kj>
public long getFileSize() MwRLv,&"
{ *h0D,O"0
int nFileLength = -1; m_0y ]RfG
try{ .8s-)I
URL url = new URL(siteInfoBean.getSSiteURL()); wX}p6yyN
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \:{K",2
httpConnection.setRequestProperty("User-Agent","NetFox"); xgcJEox!
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int responseCode=httpConnection.getResponseCode(); ,V!"4T,Z
if(responseCode>=400) 7u&l]NC?y
{ f:+/=MW
processErrorCode(responseCode); q&z'S
return -2; //-2 represent access is error oB5\^V$
} F|>
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String sHeader; FulFEnSV
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for(int i=1;;i++) o]&q'>Rf
{ /jJD
{
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 6 :|;O
//Utility.log(in.readLine()); `$JvWN,kB
sHeader=httpConnection.getHeaderFieldKey(i); ?&wrz
if(sHeader!=null) R&(OWF;~,
{ WcqR; Nm
if(sHeader.equals("Content-Length")) EQlb:;j
{ :lo5,B;k
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); lFt!
break; xk~gGT&
} *nU5PSs
} 0yC~"u[N Y
else n',X,P0
break; !1I# L!9
} GalSqtbmDt
} {Ia1H
catch(IOException e){e.printStackTrace ();} QnOgF 3t
catch(Exception e){e.printStackTrace ();} k"cMAu.
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Utility.log(nFileLength); }nPt[77U_7
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return nFileLength; $,by!w'e:l
} ?:9y
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//保存下载信息(文件指针位置) 2o<*rH
private void write_nPos() gq+0t
{ >I4BysR
try{ T2Z$*;,>T
output = new DataOutputStream(new FileOutputStream(tmpFile)); HI|egf@
output.writeInt(nStartPos.length); =nCA=-Jv
for(int i=0;i<nStartPos.length;i++) dj(&"P
{ -(TC'
// output.writeLong(nPos); *Lrrl
output.writeLong(fileSplitterFetch.nStartPos); 4dFr~ {
output.writeLong(fileSplitterFetch.nEndPos); {2:baoG-
} ?aTH<
output.close(); QEqYqAGzu|
} Mu`_^gG
catch(IOException e){e.printStackTrace ();} eG(YORkR
catch(Exception e){e.printStackTrace ();} /~'C!so[v
} Wo&22,EB
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//读取保存的下载信息(文件指针位置) QDY uJ&!h
private void read_nPos() ]>)shH=Yx
{ l[[`-f8j
try{ H][TH2H1
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile));
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int nCount = input.readInt(); `uPO+2
nStartPos = new long[nCount]; xL_QTj
nEndPos = new long[nCount]; wry`2_c
for(int i=0;i<nStartPos.length;i++) ."dT6u E
{ 9J7yR}2-F
nStartPos = input.readLong(); 5(CInl
nEndPos = input.readLong(); Td|,3
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} BEb?jRMjLg
input.close(); i5le0lM
} Awfd0L;9
catch(IOException e){e.printStackTrace ();} ?0X$ox
catch(Exception e){e.printStackTrace ();} @Un/,-ck
} ;/+< N
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private void processErrorCode(int nErrorCode) Ld_u Me?Z
{ LI}e_=E
System.err.println("Error Code : " + nErrorCode); 19GF%+L
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} <$?#P#A
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//停止文件下载 >b\|%=(x!*
public void siteStop() v0)
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{ 0);5cbV7i
bStop = true; -<x%
for(int i=0;i<nStartPos.length;i++) ,?m@Ko7Y
fileSplitterFetch.splitterStop(); YC%xW*
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} Y~*p27@fR
} oO[eer_S-
//负责部分文件的抓取 Hz,Gn9:p
**FileSplitterFetch.java GtmoFSZ
*/ Y{j~;G@Wl
package NetFox; `/m]K~~
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import java.io.*; FYik}wH]
import java.net.*; >yn?@ve@
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public class FileSplitterFetch extends Thread { a+z>pV|
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String sURL; //File URL AUF[hzA
long nStartPos; //File Snippet Start Position n+=7u[AZi
long nEndPos; //File Snippet End Position ).,twf58
int nThreadID; //Thread's ID Nz{qu}dt
boolean bDownOver = false; //Downing is over &0T7Uv-`
boolean bStop = false; //Stop identical ZJbaioc\
FileAccessI fileAccessI = null; //File Access interface -{*3<2rFK
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException pR0!bgC
{ > Q=e9L=
this.sURL = sURL; u=@zYA(
this.nStartPos = nStart; hH>a{7V
this.nEndPos = nEnd; #QlxEs#%
nThreadID = id; B7C<;`5TiD
fileAccessI = new FileAccessI(sName,nStartPos);//定位 0K"+u9D^
} i885T'
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public void run() cyd_xB5K
{ A#q.)8
while(nStartPos < nEndPos && !bStop) lu>G=uCJ
{ s +S6'g--
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try{ &Pv$nMB$I
URL url = new URL(sURL); |a[ "
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); A-vYy1,'
httpConnection.setRequestProperty("User-Agent","NetFox"); a>#$&&oQ0
String sProperty = "bytes="+nStartPos+"-"; aTHf+;
httpConnection.setRequestProperty("RANGE",sProperty); .yTo)t
Utility.log(sProperty); 3k6Dbz
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InputStream input = httpConnection.getInputStream(); F_@`
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//logResponseHead(httpConnection); %eHr^j~w$
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byte[] b = new byte[1024]; }<2|6 {
int nRead; #Z]Cq0=
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) CPsl/.$tC
{ {1UU `d
nStartPos += fileAccessI.write(b,0,nRead); [xfg6
//if(nThreadID == 1) p `oB._
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,lCFe0>k!=
} Xq"9TYf$
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Utility.log("Thread " + nThreadID + " is over!"); K vPLA{
bDownOver = true; H^B,b!5i
//nPos = fileAccessI.write (b,0,nRead); xV`)?hEXFh
} -{?xl*D
catch(Exception e){e.printStackTrace ();} "{S4YA
} *.$ov<E.
} &j'k9C2p
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//打印回应的头信息 ):+^893)
public void logResponseHead(HttpURLConnection con) k|]l2zlT
{ "j&p3
for(int i=1;;i++) =RWY0| f
{ DKlHXEt>
String header=con.getHeaderFieldKey(i); 01aw+o
if(header!=null) RM%Z"pc Y6
//responseHeaders.put(header,httpConnection.getHeaderField(header)); mT j
Utility.log(header+" : "+con.getHeaderField(header)); qncZpXw^
else us8ce+
break; H-WNu+
} l) KN5V
} SzG
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public void splitterStop() ][OkydE
{ +K=RM qM-8
bStop = true; geM`O|Np
} sSiZG
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} \"yR[.Q?
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/* &