/* ilK*Xo
**SiteFileFetch.java N>*+Wg$Ne
*/ u;t~
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package NetFox; -8FUR~WJ
import java.io.*; Nb9GrYIS
import java.net.*; Bf#cBI
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public class SiteFileFetch extends Thread { *{+{h;p
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SiteInfoBean siteInfoBean = null; //文件信息Bean F xm:m
long[] nStartPos; //开始位置 1,;zX^
long[] nEndPos; //结束位置 _iq62[i3^
FileSplitterFetch[] fileSplitterFetch; //子线程对象 |BZrV3;H
long nFileLength; //文件长度 =+wd"Bu
boolean bFirst = true; //是否第一次取文件 !dGu0wE
boolean bStop = false; //停止标志 i@5Fne
File tmpFile; //文件下载的临时信息 ihwJBN>(
DataOutputStream output; //输出到文件的输出流 of_y<dd[G
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 2yg6hR
public SiteFileFetch(SiteInfoBean bean) throws IOException j:'g*IxM_
{ YK6'/2!
siteInfoBean = bean; $qYP|W
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); M$Z2"F;
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); B1!xr-kC
if(tmpFile.exists ()) >O24#!9XW
{ 0'Ho'wDb
bFirst = false; , p~1fB-/
read_nPos(); `ROHB@-
} }]mxKz
else Kd^.>T-
{ yCN_vrH>
nStartPos = new long[bean.getNSplitter()]; :zKMw=
nEndPos = new long[bean.getNSplitter()]; VSDua.
} R^/SBrWve
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} h,m 90Hd+
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public void run() 9>9EZ?4m
{ fM"*;LN!N
//获得文件长度 ]"{8"+x
//分割文件 W +ER'lX
//实例FileSplitterFetch jmkOu5@
//启动FileSplitterFetch线程 dV'EiNpf
//等待子线程返回 *QiQ,~Ep
try{ rfEWh
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if(bFirst) f!#!
{ / 'qoKof
nFileLength = getFileSize(); ;mk[!
if(nFileLength == -1) ,n8\y9{G
{ ZzupK^5Z
System.err.println("File Length is not known!"); ySmbX
} .nrllVG%`
else if(nFileLength == -2) v}Ju2 }IK
{ rjK`t_(=
System.err.println("File is not access!"); @0@ZlHwM
} sg^|dS{3D
else w(6n
{ <8^x
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for(int i=0;i<nStartPos.length;i++) k[ro[E
{ ,.W7Z~z
nStartPos = (long)(i*(nFileLength/nStartPos.length)); .M^[/!
} tWIJ,_8l
for(int i=0;i<nEndPos.length-1;i++) yzhNl'Rz
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nEndPos = nStartPos[i+1]; _{cCo:
} R03 Te gwA
nEndPos[nEndPos.length-1] = nFileLength; DaQl ip
} R);Hd1G
} I}
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//启动子线程 rR#Ditn^
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; U;MXiE3D
for(int i=0;i<nStartPos.length;i++) erUYR"
{ |R0f--;
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lQ;BI~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q-
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nStartPos,nEndPos,i); s;Gd`-S>d
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ">oySo.B?
fileSplitterFetch.start(); 3O/#^~\'hW
} l&qnqmW<
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), y'K2#Y~1e
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Z]]Ur
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CP~ZIIip"
nEndPos = " + nFileLength); IA@>'O
// fileSplitterFetch[nPos.length-1].start(); sF{aG6u
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//等待子线程结束 g|>LT_
//int count = 0; sCFxn
//是否结束while循环 H&)}Z6C"
boolean breakWhile = false; +P2oQ_Fk`9
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while(!bStop) gA!@oiq@
{ Wb-C0^dTn
write_nPos(); pd|KIs%jl
Utility.sleep(500); J ay"
breakWhile = true;
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for(int i=0;i<nStartPos.length;i++) ?;ok9Y
{ G.rz6o;
if(!fileSplitterFetch.bDownOver) <e2l@@#oy
{ lvO6&sF1
breakWhile = false; e7RgA1
break; ITn%
} K oJ=0jM#
} ec&/a2M
if(breakWhile) $a M5jH<
break; f4"UI-8;n
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//count++; <q'l7S
//if(count>4) {%R^8
// siteStop(); *q=T1JY
} f+h\RE=BGt
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System.err.println("文件下载结束!"); 0[MYQl`
} Jb QK$[z"
catch(Exception e){e.printStackTrace ();} ZZY# .
} K~TwyB-h
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//获得文件长度 Lx0nLJ\
public long getFileSize() cS;3,#$
{ SVe]2ONd
int nFileLength = -1; 9TW[;P2> )
try{ D=0YLQ*rP
URL url = new URL(siteInfoBean.getSSiteURL()); SMEl'y
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]`/>hH>+~9
httpConnection.setRequestProperty("User-Agent","NetFox"); %QezC+n
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int responseCode=httpConnection.getResponseCode(); vMT f^V
if(responseCode>=400) Q(bOar5
{ {R}F4k
processErrorCode(responseCode); DB/~Z
return -2; //-2 represent access is error mmTpF]t
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} 4q}+8F`0F
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String sHeader; gP2zDI
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for(int i=1;;i++) uX_H;,n
{ w% %q/![uy
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ~g{j)"1
//Utility.log(in.readLine()); *~vB6V|1
sHeader=httpConnection.getHeaderFieldKey(i); Er;/zxg9p
if(sHeader!=null) l0qaTpn
{ 1Bj.MQ^
if(sHeader.equals("Content-Length")) |oY{TQ<<d
{ $1yO Zp5
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); lsz3'!%Y)
break; Rx-\B$G
} fN&,.UB^p
} e^y9Kmd
else 'ygKP6M
break; uo#1^`P
} J(7#yg%5
} !oWB5x~:P
catch(IOException e){e.printStackTrace ();} daE.y_9y
catch(Exception e){e.printStackTrace ();} ;b<w'A_1
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Utility.log(nFileLength); ~gDYb#p
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return nFileLength; Gv-VDRS
} Q:-T'xk@
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//保存下载信息(文件指针位置) W/Dd7G#IC
private void write_nPos() L@N%S Sf
{ D=e*rrL7a
try{ 4V@%Y,:ee
output = new DataOutputStream(new FileOutputStream(tmpFile)); Q:A#4Z
output.writeInt(nStartPos.length); nLN0zfhE#
for(int i=0;i<nStartPos.length;i++) 9\Ii$Mp
{ [LYO'-g^F#
// output.writeLong(nPos); F%w!I 9
output.writeLong(fileSplitterFetch.nStartPos); ,lZ19B?WP
output.writeLong(fileSplitterFetch.nEndPos); eh86-tQI~(
} CMj =4e
output.close(); ,'8%'xit
} roADC?@r
catch(IOException e){e.printStackTrace ();} %U\,IO `g
catch(Exception e){e.printStackTrace ();} [l}H:%O,
} Hjm> I'9
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//读取保存的下载信息(文件指针位置) \<7Bx[/D4
private void read_nPos() /Hr|u
{ Y2`sL,'h
try{ I dK*IA4
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); \Zj%eW!m
int nCount = input.readInt(); H*=cw<
nStartPos = new long[nCount]; }z`x-(V
nEndPos = new long[nCount]; hb`9Vn\-E
for(int i=0;i<nStartPos.length;i++) \|PiQy*_?
{ Z@bgJL83
nStartPos = input.readLong(); -CvmZ:n
nEndPos = input.readLong(); dbf<k%i6
} c8uaZvfW
input.close(); wWl?c
} ;s+/'(*
catch(IOException e){e.printStackTrace ();} OSBR2Z;=
catch(Exception e){e.printStackTrace ();} M':-f3aT%
} F9%_@n
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private void processErrorCode(int nErrorCode) F2N"aQ&
{ "n%j2"TYJj
System.err.println("Error Code : " + nErrorCode); u
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} s)-An(Uw
{ DYY9MG8
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//停止文件下载 5CI{&E
public void siteStop() h FU8iB`Q
{ }-3 VK%
bStop = true; X=QX9Ux?^
for(int i=0;i<nStartPos.length;i++) #Vk?
fileSplitterFetch.splitterStop(); "laf:Ty1
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} t&?jJ7 (&8
} |`T7}U
//负责部分文件的抓取 -.D?Z8e
**FileSplitterFetch.java v=k+MvX
*/ i}m'#b
package NetFox; d{fd5jv;
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import java.io.*; &y?
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import java.net.*; :8yebOs
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public class FileSplitterFetch extends Thread { @76}d
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String sURL; //File URL zyPb\/
long nStartPos; //File Snippet Start Position Wl| i$L)7
long nEndPos; //File Snippet End Position w%L4O;E]*{
int nThreadID; //Thread's ID fI1CT)0<e
boolean bDownOver = false; //Downing is over A7L; ims7
boolean bStop = false; //Stop identical [4"(\r\f
FileAccessI fileAccessI = null; //File Access interface \uZpAV)5
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException RP~nLh3=\
{ t|U5]$5
this.sURL = sURL; tA1?8`bQ
this.nStartPos = nStart; bB<S4@jF8z
this.nEndPos = nEnd; 6,q0F*q
nThreadID = id; \&F4Wl>`
fileAccessI = new FileAccessI(sName,nStartPos);//定位 +$C9@CZM9
} %R GZu\p
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public void run() DuC#tDP
{ K~:SLCv
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while(nStartPos < nEndPos && !bStop) qJG;`Ugl:
{ AZ.QQ*GZ#y
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try{ ';R]`vWFe
URL url = new URL(sURL); NfDS6i.Fqp
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &4OOW;,?<
httpConnection.setRequestProperty("User-Agent","NetFox"); lJ3VMYVrUP
String sProperty = "bytes="+nStartPos+"-"; eg;r38
httpConnection.setRequestProperty("RANGE",sProperty); Q0xGd(\
Utility.log(sProperty); 6%V:Z
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InputStream input = httpConnection.getInputStream(); k<*v6
sNs;
//logResponseHead(httpConnection); j&