/* h8:5[;e
**SiteFileFetch.java /N=M9i\;
*/ MmD1@fW32#
package NetFox; rl:D>t(:.
import java.io.*; zj7?2
import java.net.*; (RI+4V1
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public class SiteFileFetch extends Thread { )KUEkslR:
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SiteInfoBean siteInfoBean = null; //文件信息Bean U_@Dn[/:
long[] nStartPos; //开始位置 7o$S6Y;c4
long[] nEndPos; //结束位置 Z6_fI
FileSplitterFetch[] fileSplitterFetch; //子线程对象 9lc{{)m2)
long nFileLength; //文件长度 z{A~d
boolean bFirst = true; //是否第一次取文件 @K}Bll.E
boolean bStop = false; //停止标志 mZ#h p}\.
File tmpFile; //文件下载的临时信息 !.[H!-V.
DataOutputStream output; //输出到文件的输出流 -02.n}u>
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) z;Dc#SZnO(
public SiteFileFetch(SiteInfoBean bean) throws IOException lBNB8c0e"{
{ .t$1B5
siteInfoBean = bean; i`7:^v;
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); UUqA^yJ
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }/M`G]wT#
if(tmpFile.exists ()) ?Y_!Fr3V
{ :KBy(}V
bFirst = false; (dAE
read_nPos(); <Eh_
} WU{9lL=
else mEq>{l:
{ ~o8x3`CoF
nStartPos = new long[bean.getNSplitter()]; [k
nEndPos = new long[bean.getNSplitter()]; h:{^&d
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} _TjRvILC
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} 0EBHRY_F
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public void run() zI.:1(,
{ =iE)vY,?"}
//获得文件长度 FUs57
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//分割文件 PQ(/1v
//实例FileSplitterFetch !X+}W[Ic^
//启动FileSplitterFetch线程 3'6by!N,d
//等待子线程返回 i#(+Kxr]>
try{ Y>I9o)KR
if(bFirst) 30Udba+{]p
{ cb%ML1c
nFileLength = getFileSize(); c<imqDf
if(nFileLength == -1) z?.XVk-
{ -e_B
System.err.println("File Length is not known!"); jYnP)xX;
} V( 3rTDg
else if(nFileLength == -2) G u#wH
{ =7Sw29u<
System.err.println("File is not access!"); k;pU8y6Y
} Hw%lT}[O
else Dj x[3['
{ #-K,,"
for(int i=0;i<nStartPos.length;i++) RKwuvVI
{ ?/^{sW'
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); m";?B1%x
} 'Jl3%axR
for(int i=0;i<nEndPos.length-1;i++) C &&33L
{ 2 D!$x+|
nEndPos = nStartPos[i+1]; Vl0Y'@{
} qHC/)M#L
nEndPos[nEndPos.length-1] = nFileLength; !&5B&w{u~!
} Jb]22]
} Wo<kKkx2
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//启动子线程 1'SpJL1u~
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )C%S`d<%,
for(int i=0;i<nStartPos.length;i++) g/`z.?
{ K#a_7/!v/
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), rwY{QBSf
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Z]=9=S|
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nStartPos,nEndPos,i); >(eR0.x
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [_zoJ
fileSplitterFetch.start(); RbJbVFz8C
}
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 8t1,_,2'
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); iS}~e{TP/
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", a\Dw*h?b~
nEndPos = " + nFileLength); 0m'tPFQ|
// fileSplitterFetch[nPos.length-1].start(); ^LAdN8Cbb
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//等待子线程结束 LGPg\g`
//int count = 0; HOlMj!.
//是否结束while循环 4nGr?%>
boolean breakWhile = false; 8|-064i>
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while(!bStop) #5mnSky+s
{ A?Gk8
write_nPos(); Mx=L lC)
Utility.sleep(500); :1e'22[=.
breakWhile = true; <R8!fc{`
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for(int i=0;i<nStartPos.length;i++) $jL+15^N0+
{ ~A-VgBbU>_
if(!fileSplitterFetch.bDownOver) 07A2@dx
{ l5,}yTUta
breakWhile = false; {y==8fCJ
break; _`q ei0
} Fn*)!,)
} PZSi}j/
if(breakWhile) &-4SA j
break; =\)qUs\z
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//count++; ?8R
//if(count>4) I)}T4OOc/
// siteStop(); Wup%.yT~Ds
} Nzel^~
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System.err.println("文件下载结束!"); I=o/1:[-
} L6"?p-:@'
catch(Exception e){e.printStackTrace ();} <"
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} Ol1P
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//获得文件长度 0}
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public long getFileSize() >d#Ks0\&
{ 6;hZHe 'W
int nFileLength = -1; +B-;.]L
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try{ zqAp7:
URL url = new URL(siteInfoBean.getSSiteURL()); ~Is-^k)y
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); S9@)4|3C|p
httpConnection.setRequestProperty("User-Agent","NetFox"); h,)UB1
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int responseCode=httpConnection.getResponseCode(); hYv;*]
if(responseCode>=400) 4z^5|$?_ta
{ xgv&M:%D-
processErrorCode(responseCode); h6C:`0o
return -2; //-2 represent access is error
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} !nyUAZ9 :
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String sHeader; !Zma\Ip
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for(int i=1;;i++) g)#.|d+
{ ~4[4"Pi>|
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); O5 ?3nYHa
//Utility.log(in.readLine());
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sHeader=httpConnection.getHeaderFieldKey(i); Fg-4u&Ik
if(sHeader!=null) T1c.ER}17
{ jq"iLgEMO
if(sHeader.equals("Content-Length")) |_`wC
{ _^cFdP)8|
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); aO>Nev
break; >KMTxHE`+
} 0I
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} TNK~ETE4
else S#l6=zI7^R
break; 0xe*\CAo
} lpHz*NZ0
} u&s>UkR
catch(IOException e){e.printStackTrace ();} /6a617?9J
catch(Exception e){e.printStackTrace ();} SYmiDR
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Utility.log(nFileLength); [^GXHE=
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return nFileLength; WnZn$N.
} :OvTZ ?\
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//保存下载信息(文件指针位置) @2Ca]2,4
private void write_nPos() 1>e%(k2w%
{ UO{3vry48
try{ ]@bu%_s"
output = new DataOutputStream(new FileOutputStream(tmpFile)); @-F[3`HeA
output.writeInt(nStartPos.length); lL{1wCsl
for(int i=0;i<nStartPos.length;i++) O9(6 ?n
{ #K_E/~
// output.writeLong(nPos); zM*PN|/%sH
output.writeLong(fileSplitterFetch.nStartPos); _|%l) KO
output.writeLong(fileSplitterFetch.nEndPos); " .:b43Z
} %V3xO%
output.close(); *{e?%!Q
} C.}Vm};M
catch(IOException e){e.printStackTrace ();} }|!9aojr
catch(Exception e){e.printStackTrace ();} ( [m[<
} ~*,e &I
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//读取保存的下载信息(文件指针位置) 4ZN&Yf`
private void read_nPos() ?3)
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{ TB
try{ MY `V0
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6}9`z8
int nCount = input.readInt(); Ko|p&-Z;
nStartPos = new long[nCount]; #3m7`}c
nEndPos = new long[nCount]; 't:s6
for(int i=0;i<nStartPos.length;i++) #>/stU-
{ m^rrbU+HM?
nStartPos = input.readLong(); iS%md
nEndPos = input.readLong(); b`Agb<x"
} /,cyp.
input.close(); AD/7k3:
} ~56F<=#,
catch(IOException e){e.printStackTrace ();} )@OKL0t
catch(Exception e){e.printStackTrace ();} 'z.:
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} =$t
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private void processErrorCode(int nErrorCode) G8E=E<Yg~
{ r=o\!sh[
System.err.println("Error Code : " + nErrorCode); +f- E8q
} Lj(y>{y
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//停止文件下载 ka$oUB)iQ
public void siteStop() "Yu';&
{ +zup+=0e
bStop = true; '7Aj0U(
for(int i=0;i<nStartPos.length;i++) 31@m36? X
fileSplitterFetch.splitterStop(); uY~xHV_-
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} F;,LY:s|Z
} V;}6C&aP.
//负责部分文件的抓取 KKLW-V\6K
**FileSplitterFetch.java Rw9 *!<Izt
*/ BDCFToSf|
package NetFox; 3+v+_I>%k
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import java.io.*; 9/nS?>11
import java.net.*; 6q!smM
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public class FileSplitterFetch extends Thread { ?{Gf'Y}y&
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String sURL; //File URL Gap\~Z@L
long nStartPos; //File Snippet Start Position #g6*s+Gm
long nEndPos; //File Snippet End Position VP<_~OLc
int nThreadID; //Thread's ID }N6r/
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boolean bDownOver = false; //Downing is over /EpsJb`kj
boolean bStop = false; //Stop identical 4}\Dr
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FileAccessI fileAccessI = null; //File Access interface (.DX</f/4
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException tbP
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{ [qEd`8V(
this.sURL = sURL; h5.>};"@'
this.nStartPos = nStart; lN-[2vT<
this.nEndPos = nEnd; !] -ET7
nThreadID = id; V u`O%[Q/
fileAccessI = new FileAccessI(sName,nStartPos);//定位 BVt)~HZ
} c!{]Z_d\
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public void run() < x==T4n/
{ CAPPOh
while(nStartPos < nEndPos && !bStop) @9wug!,
{ ;1&7v
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try{ 5ma*&Q8+
URL url = new URL(sURL); A]FjV~PB
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); '#fwNbD
httpConnection.setRequestProperty("User-Agent","NetFox"); 3~%wA(|A
String sProperty = "bytes="+nStartPos+"-"; ?l3PDorR
httpConnection.setRequestProperty("RANGE",sProperty); sBo|e]m#
Utility.log(sProperty); w53+k\.
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InputStream input = httpConnection.getInputStream(); F5#P{zk|
//logResponseHead(httpConnection); 9Fkzt=(E~
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byte[] b = new byte[1024]; y^SDt3Am
int nRead; V+M=@Pvp9
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) #!WD1a?L
{ pd[?TyVK;
nStartPos += fileAccessI.write(b,0,nRead); kdX]Afyj
//if(nThreadID == 1) X8Xw'
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5V^+;eO
} zoU-*Rs6
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Utility.log("Thread " + nThreadID + " is over!"); 7:h8b/9
bDownOver = true; Ba9le|c5
//nPos = fileAccessI.write (b,0,nRead); .-6B6IEI_"
} >$.lM~k
catch(Exception e){e.printStackTrace ();} b\U p(]
} f0^DsP
} iYyJq;S
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//打印回应的头信息 0PK*ULwSN
public void logResponseHead(HttpURLConnection con) 3r)<:4a
u&
{ ^_cR
for(int i=1;;i++) c%|18dV
{ jNIZ!/K
String header=con.getHeaderFieldKey(i); tyH*epanw
if(header!=null) {=Y.Z1E:
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Ny.s
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Utility.log(header+" : "+con.getHeaderField(header)); m 8Q[+_:$H
else YXR%{GUP[
break; j^g^=uau
} Vko1{$}t
} W* XG9
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public void splitterStop() f/r@9\x
{ (mOUbO8
bStop = true; >|Hd*pg))
} Gj.u/l
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} }538vFNi
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/* H^N@fG<*dh
**FileAccess.java Z.Sq5\d
*//文件访问(定位,写) kO]],Vy`
package NetFox; @y (9LSs
import java.io.*; )<D(Mb2p|
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public class FileAccessI implements Serializable{ CywQ
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 a-t}L{~
RandomAccessFile oSavedFile; :\+;5Se+l
long nPos; L
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public FileAccessI() throws IOException Z|FWQ8gZ4m
{ 8TK&i,
this("",0); u |hT1l
} ^_5Nh^
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}}";)}C`
public FileAccessI(String sName,long nPos) throws IOException PKT/U^2X]
{ ^<0azza/(
oSavedFile = new RandomAccessFile(sName,"rw"); Lh%>>
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this.nPos = nPos; }*2q7K2bj
oSavedFile.seek(nPos); piRP2Lbm*
} p&nIUx"
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public synchronized int write(byte[] b,int nStart,int nLen) u0;FQr2
{ xZ*.@Pkr
int n = -1; 7R 40t3
try{ tFvc~zz9
oSavedFile.write(b,nStart,nLen); Zhl}X!:c?\
n = nLen; \\F@_nB,b
} a'LM6A8~x
catch(IOException e) L6^Qn%:OTd
{ edt(Zzk@3-
e.printStackTrace (); ,cR=W|6cQm
} 4uW}.7R'
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return n; ~aK@M4
} Wx;`=9
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} ! 5rja-h
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/* -q9`Btz
**SiteInfoBean.java C F2*W).+
*/ nVqFCBB
package NetFox; k_rtsN
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public class SiteInfoBean { E\5cb[Y
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private String sSiteURL; //Site's URL $z-zscco
private String sFilePath; //Saved File's Path *5DOTWos
private String sFileName; //Saved File's Name f)xHSF"
private int nSplitter; //Count of Splited Downloading File gDP\u<2!
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