/* ,@Elw>^
**SiteFileFetch.java I3Ad+]v
*/ p
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package NetFox; B<,AI7
import java.io.*; Nxm '*
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import java.net.*; Wa%p+(\<uB
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public class SiteFileFetch extends Thread { i\RB KF
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SiteInfoBean siteInfoBean = null; //文件信息Bean #jw%0H;l]
long[] nStartPos; //开始位置 Vj[,o
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long[] nEndPos; //结束位置 i\{fM}~W$
FileSplitterFetch[] fileSplitterFetch; //子线程对象 SqoO"(1x
long nFileLength; //文件长度 T lB+
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boolean bFirst = true; //是否第一次取文件 0'R}'
boolean bStop = false; //停止标志 )N&95\u
File tmpFile; //文件下载的临时信息 ; VQ:\fG
DataOutputStream output; //输出到文件的输出流 L0ZAF2O
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ` )~CT
public SiteFileFetch(SiteInfoBean bean) throws IOException kO,vHg$
{ <ol?9tm
siteInfoBean = bean; O{=@c96rl
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); XZ|\|(6Cc
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); IZxr;\dq6
if(tmpFile.exists ()) \Pd>$Q
{ 7#9fcfL
bFirst = false; ~8[`(/hj
read_nPos(); }`uq:y
} RNX>I,2sh
else g<i>252>
{ [ _&z+
nStartPos = new long[bean.getNSplitter()]; qnw8#!%I
nEndPos = new long[bean.getNSplitter()]; (z%OK[
} Qs_]U
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} 44UN*_qG
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public void run() ;oRgg'k<
{ ABhQ7
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//获得文件长度 p1,.f&(f
//分割文件 ,h.hgyt
//实例FileSplitterFetch IVG77+O# }
//启动FileSplitterFetch线程 vH]2t.\
//等待子线程返回 [uu<aRAg3O
try{ zB+zw\ncN
if(bFirst) alZ83^YN'
{ YU1z\pK
nFileLength = getFileSize(); OF`:);
if(nFileLength == -1) aOW$H:b
{ 0JLQ.%_
System.err.println("File Length is not known!"); +kOXa^K
} /Fp@j/50
else if(nFileLength == -2) +<c(;Ucl?
{ u:\DqdlU`
System.err.println("File is not access!"); {uiL91j.
} v79\(BX
else <*djtO
{ wUmcA~3D
for(int i=0;i<nStartPos.length;i++) [S[@ Q[zP@
{ VqdR
nStartPos = (long)(i*(nFileLength/nStartPos.length)); +\MGlsMK@.
} ^+9i~PjL
for(int i=0;i<nEndPos.length-1;i++) 8' +I8J0l
{ AXpyia7nU
nEndPos = nStartPos[i+1]; P? LpI`f
} g<MCvC@
nEndPos[nEndPos.length-1] = nFileLength; 4% 2MY\
} ~"WN4
} k)S'@>n{u
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//启动子线程 @86I|cY
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; H`8}w{ft&
for(int i=0;i<nStartPos.length;i++) rh6m
{ Ert`
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), s C?-L
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \v([,tiW%
nStartPos,nEndPos,i); `HsI)RmX
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); o,=dm@j
fileSplitterFetch.start(); I>spJ5ls
} )dI `yf
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), e}W|wJ):j@
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); MrpT5|t
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 76EMS?e
nEndPos = " + nFileLength); x5W.
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// fileSplitterFetch[nPos.length-1].start(); !a9/8U_>XF
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//等待子线程结束 ykG^(.E
//int count = 0; YRJw,xl
//是否结束while循环 b`DPf@p^kc
boolean breakWhile = false; x=VLRh%Gvl
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while(!bStop) 9K_p4
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{ Xh"8uJD
write_nPos(); EB[B0e7}
Utility.sleep(500); 1WLaJ%Fv
breakWhile = true; :%"$8o*0W
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for(int i=0;i<nStartPos.length;i++) VAZ6;3@cd
{ k>7 2W/L^
if(!fileSplitterFetch.bDownOver) SFa~j)9'n
{ kV+O|9
breakWhile = false; ,$;pLjo6
break; :HDU\|{^
} 2< Q3-|/i
} >^%TY^7n
if(breakWhile) i@STo7=
break; %PxJnMb?
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//count++; bupDnTF
//if(count>4) MbjMO"}
// siteStop(); i?CXDuL
} ^`oyf{w@
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System.err.println("文件下载结束!"); Cw&U*H
} 0?8{q{ o+
catch(Exception e){e.printStackTrace ();} >TZyax<:
} =aE!y5
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//获得文件长度 5$L=l
public long getFileSize() cSs??i
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{ hQ}B?'>
int nFileLength = -1; A>W8^|l6+-
try{ p1(<F_Kta
URL url = new URL(siteInfoBean.getSSiteURL()); :I^I=A%Pe(
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); B]|"ePj-
httpConnection.setRequestProperty("User-Agent","NetFox"); UBvea(z-#
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int responseCode=httpConnection.getResponseCode(); khtYn.eaL
if(responseCode>=400) \t\ZyPxn
{ uGH>|V9'c
processErrorCode(responseCode); %,[p[`NRYR
return -2; //-2 represent access is error H8'_.2vwX
} D\i8WU
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String sHeader; e|jmOYWG
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for(int i=1;;i++) "] 0sR
{ BX=YS)
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^+zhzfJ
//Utility.log(in.readLine()); 6+Wkcrh
sHeader=httpConnection.getHeaderFieldKey(i); ]Sgc42hk
if(sHeader!=null) ;;g'C*_
{ j^'op|l
if(sHeader.equals("Content-Length")) f|X./J4Bl
{ ?oO<PR}y
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); n; fUwon
break; sX$EdIq
} fd}
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} N++jI(
else P(#by{s
break; `cBV+00YS
} Q]d3a+dK
} J}UG{RttI
catch(IOException e){e.printStackTrace ();} ,/>hWAx
catch(Exception e){e.printStackTrace ();} {(,[
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Utility.log(nFileLength); %d/Pc4gfc
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return nFileLength; 0kdPr:B Q0
} N?mTAF'M
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//保存下载信息(文件指针位置) 2po>%Cp
private void write_nPos() 1^4z/<ZWm
{ nR1QS_@{L
try{ ``p()^zT
output = new DataOutputStream(new FileOutputStream(tmpFile)); -$js5Gx1
output.writeInt(nStartPos.length); 0+P<1ui
for(int i=0;i<nStartPos.length;i++) 9OnH3
{ %8a886;2
// output.writeLong(nPos); ~@wM[}ThP$
output.writeLong(fileSplitterFetch.nStartPos); g:sn/Zug]
output.writeLong(fileSplitterFetch.nEndPos); O8drR4Pt
} SuU_psF
output.close(); `pzXh0}|
} rL/e
catch(IOException e){e.printStackTrace ();} 8I`t`C/4
catch(Exception e){e.printStackTrace ();} |3A/Og
} a*Oc:$
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//读取保存的下载信息(文件指针位置) Rr|&~%#z
private void read_nPos() <s7OY`(8
{ wtY*{m2
try{ D+ )R_
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); =
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int nCount = input.readInt(); (ugB3o
nStartPos = new long[nCount]; 4G4[IAu_
nEndPos = new long[nCount]; :7w^2/ZGo
for(int i=0;i<nStartPos.length;i++) }(/")i4h
{ "
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nStartPos = input.readLong(); 23AMrDF=N
nEndPos = input.readLong(); dMnJ)R
} ?Q]{P]
input.close(); Z`=[hu
} ,r-l^I3<
catch(IOException e){e.printStackTrace ();} $\
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catch(Exception e){e.printStackTrace ();} UtebSQ+h\
} 1j7sJ" *
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private void processErrorCode(int nErrorCode) ;QA`2$Ow
{ .%pbKi
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System.err.println("Error Code : " + nErrorCode); d }"Dp
} QKAo}1Pq
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//停止文件下载 q@}eYQ=P|e
public void siteStop() >+ZG{'!j
{ JToc("V
bStop = true; ;gC.fpu
for(int i=0;i<nStartPos.length;i++) #=G[~m\
fileSplitterFetch.splitterStop(); q-g3!
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} %ifq4'?Z
} '<A:`V9M}v
//负责部分文件的抓取 FOFZ/q
**FileSplitterFetch.java /NH9$u.g
*/ $&@L[[xl
package NetFox; 19u'{/Y"
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import java.io.*;
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import java.net.*; e*7nq~ B5
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public class FileSplitterFetch extends Thread { r
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String sURL; //File URL ~qG`~/7
long nStartPos; //File Snippet Start Position uK:?6>H
long nEndPos; //File Snippet End Position F3aOKV^
int nThreadID; //Thread's ID a5v}w7vL
boolean bDownOver = false; //Downing is over hpxqL%r
boolean bStop = false; //Stop identical aP%2CP~_ P
FileAccessI fileAccessI = null; //File Access interface H WOl79-
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException SxHj3,`#C
{ ~i4h.ZLj
this.sURL = sURL; _k0X)N+li
this.nStartPos = nStart; q"|,HpQ
this.nEndPos = nEnd; \a|FhhI
nThreadID = id; h@5mVTb}i
fileAccessI = new FileAccessI(sName,nStartPos);//定位 BrdHTk= Vy
} y&HfF~
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public void run() GWNLET
{ { *"I4
while(nStartPos < nEndPos && !bStop) jIq@@8 @o
{ Rn(vG-xQ
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try{ X*'tJN$
URL url = new URL(sURL); HAHv^
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Oie0cz:>:
httpConnection.setRequestProperty("User-Agent","NetFox"); Mpfdl65
String sProperty = "bytes="+nStartPos+"-"; T ~9)0A"]
httpConnection.setRequestProperty("RANGE",sProperty); S1iF1X(+?X
Utility.log(sProperty); pZS0;T]W,
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InputStream input = httpConnection.getInputStream(); woctnT%"Q/
//logResponseHead(httpConnection); nN=o/z d
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byte[] b = new byte[1024]; ?R
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int nRead; =*VKp{5=
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) p[Pa(a,B7
{ N3D{t\hg
nStartPos += fileAccessI.write(b,0,nRead); )jM'
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//if(nThreadID == 1) X=i^[?C
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); e/pZLj]M
} tevB2'3^
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Utility.log("Thread " + nThreadID + " is over!"); OJ (ho&((
bDownOver = true; Ow0-}Im~
//nPos = fileAccessI.write (b,0,nRead); p;[">["
} xWw Qm'I2}
catch(Exception e){e.printStackTrace ();} Hm>M}MF3
} G:W4<w
} u&q RK>wLa
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//打印回应的头信息 d|^cKLu
public void logResponseHead(HttpURLConnection con) uSeRn@
{ h]wahExYP
for(int i=1;;i++) 5pF4{Jd1
{ ze+_iQ5
String header=con.getHeaderFieldKey(i); 6qW/Td|g
if(header!=null) q5jLK)
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 0y>]68D
Utility.log(header+" : "+con.getHeaderField(header)); YVzcV`4w(
else
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break; [0M2`x4`
} k<1BE^[V
} c-|~ABtEpX
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