/* O1z3(
**SiteFileFetch.java ,h9N,bIQg
*/ )O6_9f_
package NetFox; eBlB0P
import java.io.*; LyT[
import java.net.*; O&PrO+&
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public class SiteFileFetch extends Thread { m@c\<-P
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SiteInfoBean siteInfoBean = null; //文件信息Bean >f~y2YAr
long[] nStartPos; //开始位置 c ^+{YH;k
long[] nEndPos; //结束位置 }C{wGK+o[
FileSplitterFetch[] fileSplitterFetch; //子线程对象 |("zW7g
long nFileLength; //文件长度 :8Ql(I
boolean bFirst = true; //是否第一次取文件 I#:4H2H6
boolean bStop = false; //停止标志 Z'\{hL S
File tmpFile; //文件下载的临时信息 `< cn
DataOutputStream output; //输出到文件的输出流 iFB {a?BE
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) v?#W/].C+
public SiteFileFetch(SiteInfoBean bean) throws IOException tq8rG@-C
{ 2)R*d
siteInfoBean = bean; a*UxRi8
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); !L55S03
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ty)~]!tA
if(tmpFile.exists ()) sy+tLDMd
{ %1PNP<3r0
bFirst = false; Ub*O*nre
read_nPos(); CW;=q[+w
} MN. $a9m
else r|0wIpi6Q
{ :"~n`
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nStartPos = new long[bean.getNSplitter()]; C1SCV^#
nEndPos = new long[bean.getNSplitter()]; eQ eucmQd{
} 5>"X?U}He
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} 0X4%Ccs
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public void run() 4A~1Z,"%v(
{ DH{^9HK
//获得文件长度 ycSC'R
//分割文件 g/e2t=qP
//实例FileSplitterFetch |$.`4h?
//启动FileSplitterFetch线程 tFYod#
//等待子线程返回 Kv>P+I'|r
try{ v?qU/
if(bFirst) =S}SZYwl
{ "~ eF%}.
nFileLength = getFileSize(); `\#J&N
if(nFileLength == -1) !6:X]
{ yM*f}S/
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System.err.println("File Length is not known!"); rIZ^ix-N
} ).9m6.%Uk
else if(nFileLength == -2) ^|ln q.j
{ 4 .d~u@=
System.err.println("File is not access!"); EnnE@BJ"
} u40<>A
else f"g-Hbl5
{ t7qY!S (
for(int i=0;i<nStartPos.length;i++) 8UN7(J
{ HmZ*
nStartPos = (long)(i*(nFileLength/nStartPos.length)); QcG-/_,'}
} }2~$"L,_
for(int i=0;i<nEndPos.length-1;i++) 7C@%1kL
{ 0GP\*Y8
nEndPos = nStartPos[i+1]; "jMSF@lr
} qA5PIEvdq
nEndPos[nEndPos.length-1] = nFileLength; Ij9ezNZT=
} %[H|3
} a\?-uJ+
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//启动子线程 qD<\U
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; wj#A#[e
for(int i=0;i<nStartPos.length;i++) S[5e,Ew
{ `hE@S |4
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), tunjV1 ,]
nStartPos,nEndPos,i); Z@{e\sZ)
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); P\2UIAPa\b
fileSplitterFetch.start(); IIIP<nyc
} =E10j.r
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :B"Y3~I
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); "`&1"*
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 9s@$P7N5B
nEndPos = " + nFileLength); .sR=Mf7 T
// fileSplitterFetch[nPos.length-1].start(); Tkf
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//等待子线程结束
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//int count = 0; *wD| eK7
//是否结束while循环 xY94v
boolean breakWhile = false; OX[pK_:`l
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}hyl)?*~
while(!bStop) 0s'H(qE,_
{ vo JmNH
write_nPos(); mx;1'!'fr
Utility.sleep(500); 5T- N\)@
breakWhile = true; P{gy/'PH,
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for(int i=0;i<nStartPos.length;i++) ~s4o1^6L
{ :#&Y
if(!fileSplitterFetch.bDownOver) ;>Q.r{P
{ 8-cCWoc
breakWhile = false; ZI/Ia$O
break; 0\2#(^
} T5b*Ia
} #<EMG|&(
if(breakWhile) >0Gdxj]\
break; =!{
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//count++; m6
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//if(count>4) z6>Rv9f
// siteStop(); _m2p>(N|
} QdtGFY4f,
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System.err.println("文件下载结束!"); " }oH3L
} (f `zd.
catch(Exception e){e.printStackTrace ();} {]V+C=`
} k2Y *
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//获得文件长度 FvVR \a
public long getFileSize() 7;x}W-`iF
{ %MH!L2|
int nFileLength = -1; KKJ)BG?qZ
try{ CE;J`;
URL url = new URL(siteInfoBean.getSSiteURL()); CP"
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); vS'l@`Eg]
httpConnection.setRequestProperty("User-Agent","NetFox"); t`oH7)nut
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int responseCode=httpConnection.getResponseCode(); !bg2(2z
if(responseCode>=400) |fhYft
{ .qAlPe L:
processErrorCode(responseCode); $G}!eV
6
return -2; //-2 represent access is error d:SLyFD$q
} D,sb{N
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String sHeader; (HD8Mm
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for(int i=1;;i++) 3tu:Vc.:M
{ V~!lY\
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 6<qVeO&uZ
//Utility.log(in.readLine()); 9XEP:}5,
sHeader=httpConnection.getHeaderFieldKey(i); Oi-=
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if(sHeader!=null) A4
{ $-ICTp
if(sHeader.equals("Content-Length")) S2,tv
{ [oS4WP
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); v|
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break; {Ne5*HFV
} L2<IG)oXU
} <2,NWn.
else 8LH\a.>
break; )Lb?ZXT3
} 2vh@KnNU
} "f |xIK`c
catch(IOException e){e.printStackTrace ();} wpI_yp
catch(Exception e){e.printStackTrace ();} D8*tzu-
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Utility.log(nFileLength); On*pI37(\
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return nFileLength; +]dh`8*8>1
} H&_drxUq;L
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//保存下载信息(文件指针位置) Z;M th#
private void write_nPos() c]]e(
{ Yx3ivjX.>
try{ -.!+i8d>
output = new DataOutputStream(new FileOutputStream(tmpFile)); :pXY/Pa
output.writeInt(nStartPos.length); _-c1" Kl
for(int i=0;i<nStartPos.length;i++) 6haw\ *
{ Ygs:Ox"[-G
// output.writeLong(nPos); a4E{7c
output.writeLong(fileSplitterFetch.nStartPos); iRK&-wn
output.writeLong(fileSplitterFetch.nEndPos); Xt9vTCox
} &@ [pJ2
output.close(); I3,0vnE@
} rm?C_
catch(IOException e){e.printStackTrace ();} r<9G}9
catch(Exception e){e.printStackTrace ();} 8_:j.(n
} Jk>!I\
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//读取保存的下载信息(文件指针位置) 6tZ ak1=V
private void read_nPos() GJ Takhj3
{ `W9~u: F
try{ f[fH1cu&`
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); !))!!{
int nCount = input.readInt(); HnsPXF'8g
nStartPos = new long[nCount]; K=N8O8R$y
nEndPos = new long[nCount]; %Kzu&*9Hb
for(int i=0;i<nStartPos.length;i++) Vf#g~IOI
{ ;}KT 3Q<^
nStartPos = input.readLong(); G(;R+%pu
nEndPos = input.readLong(); I#UL nSJ3
} F_.1^XM
input.close(); des.TSZ
} 9!?Ywc>0#
catch(IOException e){e.printStackTrace ();} q{CD:I:-
catch(Exception e){e.printStackTrace ();} iBh.&K{j
} AkAQ%)6qV
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private void processErrorCode(int nErrorCode) 7Q0vwKC8>
{ ~+S,`8-P
System.err.println("Error Code : " + nErrorCode); A{%LL r:
} a&Z;$
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//停止文件下载 \5P 5N]]
public void siteStop() x T1MW
{ ]O&\P n0q
bStop = true; 3Pgld*i7
for(int i=0;i<nStartPos.length;i++) ^y.|KA3[
fileSplitterFetch.splitterStop(); ac%x\e$
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} szUJh9-
} * -X`^R
//负责部分文件的抓取 ;pt.)5
**FileSplitterFetch.java hV}C.- 6h
*/ C8KV<k
package NetFox; {HbSty
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import java.io.*; ib%'{?Q.
import java.net.*; k2/t~|5
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public class FileSplitterFetch extends Thread { PwnfXsR
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String sURL; //File URL !CUM*<iV
long nStartPos; //File Snippet Start Position
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long nEndPos; //File Snippet End Position 8lFYk`|g
int nThreadID; //Thread's ID s1bb2R
boolean bDownOver = false; //Downing is over uaqV)H
boolean bStop = false; //Stop identical i
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FileAccessI fileAccessI = null; //File Access interface nm,(Wdr
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException @k9n 0Qe|F
{ z:oi@q
this.sURL = sURL; GG
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this.nStartPos = nStart; ^G14Z5.
this.nEndPos = nEnd; <9]J/w+
nThreadID = id; [&pMU)
fileAccessI = new FileAccessI(sName,nStartPos);//定位 1EWskmp
} #xh
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cb }OjM F
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public void run() xg;vQKS6
{ ; sAe#b
while(nStartPos < nEndPos && !bStop) ?OFfU 4
{ Y^b}~t
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try{ Y-+JDrK
URL url = new URL(sURL); Z5eM
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); qNWSDZQ
httpConnection.setRequestProperty("User-Agent","NetFox"); 5a|{ytP
String sProperty = "bytes="+nStartPos+"-"; =klfCFwP
httpConnection.setRequestProperty("RANGE",sProperty); DD}YbuO7
Utility.log(sProperty); #xw3a<z ?u
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InputStream input = httpConnection.getInputStream(); <07]w$m/
//logResponseHead(httpConnection); Mtc -
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byte[] b = new byte[1024]; vr4{|5M
int nRead; CYYo+5x
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) yCwe:58
{ QBd4ok:R
nStartPos += fileAccessI.write(b,0,nRead); jB,VlL
//if(nThreadID == 1) _k#!^AJ}x
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); K"zRj L+
} ;Kh?iqn^
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Utility.log("Thread " + nThreadID + " is over!"); j!"5,~
bDownOver = true; ~9#'s'
//nPos = fileAccessI.write (b,0,nRead); q4g)/x%nc
} K%UjPzPWw
catch(Exception e){e.printStackTrace ();}
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} Q]<6voyy
} .:O($9^Ho
vXg^K}a#
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//打印回应的头信息 T1%}H3
public void logResponseHead(HttpURLConnection con) xT-`dS0u
{ OHt^e7\
for(int i=1;;i++) 'n}]
{ 6?a z
String header=con.getHeaderFieldKey(i); .yHi"ss3
if(header!=null) =t
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); gHFQs](G.
Utility.log(header+" : "+con.getHeaderField(header)); 3R%yKa#
else i:Gyi([C
break; ~=9S AJr]
} Qe_C^(P
} Rm`P.;%
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public void splitterStop() IY|`$sHb
{ `VF_rC[?
bStop = true; yb,$UT"]
} :KqSMuKR
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} FiSx"o
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/* +No` 89Y
**FileAccess.java {^k7}`7,
*//文件访问(定位,写) o#>Mf464I
package NetFox; l| y.6v
import java.io.*; WJk3*$=
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public class FileAccessI implements Serializable{ E{}J-_oS45
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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 r;p@T8k
RandomAccessFile oSavedFile; o#WECs>
long nPos; M(I%QD
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public FileAccessI() throws IOException Y#+Ws0wN
{ S(/^_Y
this("",0); +VL:O]`DJ
} )l.AsfW%
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public FileAccessI(String sName,long nPos) throws IOException ^=8/I w
{ wd3OuDrU
oSavedFile = new RandomAccessFile(sName,"rw"); FjMKb
this.nPos = nPos; %Y,Ru)5}
oSavedFile.seek(nPos); E!uQ>'iq.
} D&i,`j
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public synchronized int write(byte[] b,int nStart,int nLen) <[w5M?n8
{ hj{)6dBX%
int n = -1; bYqv)_8
try{ ;+bF4r@:+
oSavedFile.write(b,nStart,nLen); #m;o)KkH$r
n = nLen; XN{WxcZ
} u6%\ZK._
\
catch(IOException e) )&Z`SaoP|J
{ I8c:U2D
e.printStackTrace (); `\'V]9wS
} PHJHW#sv
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return n; Xk1uCVUe5
} \<dg
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} r4<As` &
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/* H@9QEj!Y
**SiteInfoBean.java u,{R,hTDS
*/ o+)y!
package NetFox; L=fy!R
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public class SiteInfoBean { bZ:xH48MY
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private String sSiteURL; //Site's URL %nG>3.%
private String sFilePath; //Saved File's Path g4YlG"O[~
private String sFileName; //Saved File's Name HF"TS*
private int nSplitter; //Count of Splited Downloading File mSvSdKKKlI
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public SiteInfoBean() wLb:FB2
{//nSplitter的缺省值为5 4jGN:*kZ
//default value of nSplitter is 5 t0r0{:
this("","","",5); +@yU `
} oI'& &Bt
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) l)~U8
{ 2`j{n\/
sSiteURL= sURL; A{M7
sFilePath = sPath; (y~%6o6
sFileName = sName; :U=3*f.{
this.nSplitter = nSpiltter; )WW*X6[k
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} %d*0"<v
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public String getSSiteURL() ,>za|y<n
{ }0Uh<v@
return sSiteURL; d{t@+}0.u
} 1P'A*`!K
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public void setSSiteURL(String value) wa{!%qu5.R
{ m#i4_F=^b
sSiteURL = value; e|5@7~Vi
} I/!AjB8W4
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public String getSFilePath() q @O
{ s6Dkh}:d
return sFilePath; (5,x5l]-N
} (6NDY5h~=n
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public void setSFilePath(String value) IR$d?\O3
{ N)Q.P'`N
sFilePath = value; g5"I{ol5T~
} TJZ/lJU
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public String getSFileName() *OdmKVw6G
{ J\w4N",
return sFileName; 8F[ ;ma>Z8
} 4nP4F+
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public void setSFileName(String value) C.":2F;-e
{ jDTG15_=
sFileName = value; 2+DK:T[
} <|.]$QSi
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public int getNSplitter() CTKw2`5u
{ esE!i0%
return nSplitter; kX`m(
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} N*6~$zl&
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public void setNSplitter(int nCount) q
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{ S.B?l_d^
nSplitter = nCount; nM:<l}~v{
} U`8Er48X
} WagL8BpLx
XP0;Q;WF}
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/* KK1?!7
**Utility.java q
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*/ je2"D7D
package NetFox; K]Vp! G
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public class Utility { s]6;*mI2
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public Utility() vnVT0)Lel
{ MzgP@tB
"S6";G^I
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} +se OoTKR
zv0sz])
//线程睡眠 Ii5U)"
public static void sleep(int nSecond)
!sEhjJV^7
{ dlCiqY:}
try{ D29Lu(f
Thread.sleep(nSecond); `''y,{Fs
} _?cum~A@
catch(Exception e) )g^qgxnnV
{ oqysfLJ
e.printStackTrace (); q+oc^FD?@
} 8!!h6dQgI
} 6__!M
*QWOWg4w
//日志 rC!"<