/*
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**SiteFileFetch.java E2~&GkU.UN
*/ (W4H?u@X0
package NetFox; CDU$Gi
import java.io.*; Tweku}D7
import java.net.*; w5uOkz #
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public class SiteFileFetch extends Thread { (Ld,<!eN0
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SiteInfoBean siteInfoBean = null; //文件信息Bean ~dc~<hK
long[] nStartPos; //开始位置 W2F *+M
long[] nEndPos; //结束位置 #XPY\n^k
FileSplitterFetch[] fileSplitterFetch; //子线程对象 )D"E]
long nFileLength; //文件长度 <UC_QPA\
boolean bFirst = true; //是否第一次取文件 {WoS&eL
boolean bStop = false; //停止标志 NP^j5|A*"
File tmpFile; //文件下载的临时信息 ,`O.0e4pn
DataOutputStream output; //输出到文件的输出流 78fFAN`
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) i~0x/wSl_
public SiteFileFetch(SiteInfoBean bean) throws IOException 3"HW{=
{ $\A=J
siteInfoBean = bean; LaCVI
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); EAPjQA-B?
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ]n9gnE
if(tmpFile.exists ()) e;G}T%W
{ >`(]&o6<$
bFirst = false; VW/ICX~"d
read_nPos(); &K.js
} yrVk$k#6}
else vQ",rP%
{ 7U,[Ruu
nStartPos = new long[bean.getNSplitter()]; \]=''C=J
nEndPos = new long[bean.getNSplitter()]; Z& W*@(dX
} p.|NZXk%%a
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} &kp`1kv":
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public void run() @&xWd{8'
{ [ qx[ 0
//获得文件长度 wXKg^%t\
//分割文件 &=S<StH
//实例FileSplitterFetch [.j&~\AG
//启动FileSplitterFetch线程 NwbX]pDT
//等待子线程返回 !/RL.`!>
try{ T1[B*RwC
if(bFirst) +Cg[!6[#
{ o@47WD'm
nFileLength = getFileSize(); G~nQR
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if(nFileLength == -1) 3s
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{ VSLi{=#
System.err.println("File Length is not known!"); k|D =Q
} %("WoBPH`
else if(nFileLength == -2) }u?DK,R
{ wMvAm%}+
System.err.println("File is not access!"); Lh
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} @h)Z8so
else ;@$v_i
{ }$X/HK
for(int i=0;i<nStartPos.length;i++) 'S#D+oF(1~
{ w6&p4Jw/H?
nStartPos = (long)(i*(nFileLength/nStartPos.length)); C=,O'U(ep
} m[8?d~
for(int i=0;i<nEndPos.length-1;i++) oj%(@6L
{
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nEndPos = nStartPos[i+1]; X(M|T]`b:
} mGP&NOR0^y
nEndPos[nEndPos.length-1] = nFileLength; /k^!hI"4c
} ZBsV
} PSREQK@}E
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//启动子线程 9gQ
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; VbfTdRD-
for(int i=0;i<nStartPos.length;i++) wzf%~ats
{ "rU
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }=$>w@mJ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), v4Mn@e_#c
nStartPos,nEndPos,i); >eM>Y@8=
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 0f9*=c
fileSplitterFetch.start(); 1WUlBr/k
} -F`uz,wZ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), P={8qln,X
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ul^VGW>i
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |] cFsB#G
nEndPos = " + nFileLength); :878q TB
// fileSplitterFetch[nPos.length-1].start(); K'U8ft*_
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//等待子线程结束 B2T=O %
//int count = 0; [DD#YL\P
//是否结束while循环 lcfX(~/m^
boolean breakWhile = false; sg%Ptp
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while(!bStop) `"h[Xb#A`b
{ we&D"V
write_nPos(); cH6<'W{*
Utility.sleep(500); +<rWYF(ii/
breakWhile = true; Gc,6;!+(
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for(int i=0;i<nStartPos.length;i++) Ye]-RN/W
{
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if(!fileSplitterFetch.bDownOver) %_.
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{ @FaK/lKK
breakWhile = false; |3P dlIbO
break; 0P l>k'9
} 7p_B?r
} ^,{ r[}
if(breakWhile) 3A!Qu$r9
break; )MeeF-Ad6
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//count++; ;5&=I|xqe
//if(count>4) S+7u,%n/
// siteStop(); Z3 O_K
} Lq]t6o]
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System.err.println("文件下载结束!"); fb?YDM
} 2bAH)=
catch(Exception e){e.printStackTrace ();} M$Ow*!DfP
} wo5fGQJ
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//获得文件长度 j^m x ,
public long getFileSize() N?v}\ PU
{ MnTqWC90
int nFileLength = -1; !0X/^Xv@=
try{ #b>D^=NV>)
URL url = new URL(siteInfoBean.getSSiteURL()); p-kug]qX
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); e/R$Sfj]
httpConnection.setRequestProperty("User-Agent","NetFox"); UTVqoCHA
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int responseCode=httpConnection.getResponseCode(); @ +yjt'B
if(responseCode>=400) 85vyt/.,k
{ P~h0Ul
processErrorCode(responseCode); gB])@O%/
return -2; //-2 represent access is error u9j1>QU
} `{H!V~42
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String sHeader; qlC4&82=Q
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for(int i=1;;i++) PQXCT|iJ
{ q0KGI/5s4+
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); bKQ_{cR
//Utility.log(in.readLine()); BHpj_LB-P
sHeader=httpConnection.getHeaderFieldKey(i); r#B{j$Rw
if(sHeader!=null) juEH$7N!
{ C}]143a/Q
if(sHeader.equals("Content-Length")) IgEVz^W?h
{ I[KAW"
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); eE" *c>I
break; 2`A\'SM'4
} AA5UOg\jI
} Bpp(5
else WDF6.i ?
break; ]F
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} Q*8efzgs|
} Ws:+P~8
catch(IOException e){e.printStackTrace ();} 7T?T0x3>
catch(Exception e){e.printStackTrace ();} MCTTm^8O
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Utility.log(nFileLength); a0PClbf2.
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return nFileLength; K~A@>~vFb
} %<\tN^rP
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//保存下载信息(文件指针位置) yAQ)/u[|
private void write_nPos() G$t:#2
{ R<Ct{f!
try{
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output = new DataOutputStream(new FileOutputStream(tmpFile)); 6\RZ[gA?
output.writeInt(nStartPos.length); w_*$wVl
for(int i=0;i<nStartPos.length;i++) &{S@v9~IT
{ b
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// output.writeLong(nPos); ,"Nb;Yhg
output.writeLong(fileSplitterFetch.nStartPos); wLKC6@
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output.writeLong(fileSplitterFetch.nEndPos); 3 +8{Y
} ?'U@oz8 B
output.close(); y6&o+;I$[
} gM&4Ur
catch(IOException e){e.printStackTrace ();} ?3do-tTp
catch(Exception e){e.printStackTrace ();} h%&2M58:
} K<p)-q
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//读取保存的下载信息(文件指针位置) !BR@"%hx
private void read_nPos() &"=<w
{ %Vhj<gN
try{ Thuwme
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 9G)fJr[c
int nCount = input.readInt(); xpWY4Q
nStartPos = new long[nCount]; &G_XgQsg{
nEndPos = new long[nCount]; e|4U2\&3y
for(int i=0;i<nStartPos.length;i++) i}~U/.P
{ \N.Bx
nStartPos = input.readLong(); 'h>CgR^NM1
nEndPos = input.readLong(); 41c4Xj?'
} cD9.L
input.close(); qjH/E6GGg
} C:RA(
catch(IOException e){e.printStackTrace ();} \iAs
catch(Exception e){e.printStackTrace ();} C,,S<=L:
} 8[x{]l[
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private void processErrorCode(int nErrorCode) CPJ%<+4%b
{ jR"ACup(
System.err.println("Error Code : " + nErrorCode); <1E5[9
q
} _@O.EksY3r
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//停止文件下载 r[3 2'E
public void siteStop() Iy@6cd,)S
{ )@6iQ
bStop = true; w5q'M
for(int i=0;i<nStartPos.length;i++) FLQ>,=O
fileSplitterFetch.splitterStop(); 4^k+wQU
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} :</KgR0I
} K5 Z'kkOk
//负责部分文件的抓取 AX6l=jFZx
**FileSplitterFetch.java BCt>P?,UO
*/ -fD W>]_
package NetFox; RH"EO4
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import java.io.*; +[Q`I*C
import java.net.*; ML7qrc;Rx
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public class FileSplitterFetch extends Thread { ~/;shs<9EM
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String sURL; //File URL }M &hcw<
long nStartPos; //File Snippet Start Position 1
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long nEndPos; //File Snippet End Position Y"E*#1/
int nThreadID; //Thread's ID ,ZvlKN
boolean bDownOver = false; //Downing is over _nec6=S6(
boolean bStop = false; //Stop identical
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FileAccessI fileAccessI = null; //File Access interface wcW}Sv[r
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException tTPjCl
{ I~25}(IDZ"
this.sURL = sURL; ]_2<uK}fg
this.nStartPos = nStart; r-5xo.J'
this.nEndPos = nEnd; _Q}vPSJviC
nThreadID = id; sLW e \o
fileAccessI = new FileAccessI(sName,nStartPos);//定位 _q`f5*Z[
} >H,PST
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public void run() *zWf8X
{ j4E`O%@^
while(nStartPos < nEndPos && !bStop) #XeabcOQ
{ LR
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#w;%{C[D
try{ fU'[lZ
URL url = new URL(sURL); B)s%B'
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :{~TG]4M
httpConnection.setRequestProperty("User-Agent","NetFox"); <ugy-vSv
String sProperty = "bytes="+nStartPos+"-"; tFX!s;N[
httpConnection.setRequestProperty("RANGE",sProperty); WP4"$W
Utility.log(sProperty); ,pa=OF
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InputStream input = httpConnection.getInputStream(); )0{ZZ-beG
//logResponseHead(httpConnection); y@\J7 h:
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byte[] b = new byte[1024]; [\.@,Y0j
int nRead; 7z3YzQ=Kg
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) C^ Oy.s
{ N@R?<a
nStartPos += fileAccessI.write(b,0,nRead); +EM^
//if(nThreadID == 1) UKf0cU
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?xtP\~
} xU'% 6/G
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Utility.log("Thread " + nThreadID + " is over!"); U46Z~B
bDownOver = true; -qJO6OM
//nPos = fileAccessI.write (b,0,nRead); Il$Jj-)
} 8Oo16LPD
catch(Exception e){e.printStackTrace ();} ^q/_D%]C
} N6!$V7oT
} }RZN3U=
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//打印回应的头信息 -Ps kUl'
public void logResponseHead(HttpURLConnection con) Cm#[$T@C
{ rIJd(=
for(int i=1;;i++) }N
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{ BS+=*3J
String header=con.getHeaderFieldKey(i); "ac$S9@~
if(header!=null) @fI2ZWN|
//responseHeaders.put(header,httpConnection.getHeaderField(header)); cGS7s 8U
Utility.log(header+" : "+con.getHeaderField(header)); >jpkR
else 3Hkb)Wu
break; AR7]~+X
} 9v(k<('_
} 01vKx)f
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public void splitterStop() u51Lp
{ 'SnB7Y
bStop = true; }vt>}%%
} 4i(?5p>f
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}Z8DVTpX}
} GA2kg7
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/* %lS jC%Z'd
**FileAccess.java f}VIkx]X"
*//文件访问(定位,写) Mt%=z9OLq9
package NetFox; lAo S 9w
import java.io.*; ++Fk8R/$U[
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public class FileAccessI implements Serializable{ @Jr@
fF}
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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 #]lK! :
RandomAccessFile oSavedFile; ]%I|C++0
long nPos; Bngvm9k3
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public FileAccessI() throws IOException TV*@h2C"i
{ E{}Vi>@V?
this("",0); 287)\FU;3
} jQ9i<-zc
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public FileAccessI(String sName,long nPos) throws IOException lW3wmSWn%
{ d @>1m:p
oSavedFile = new RandomAccessFile(sName,"rw");
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this.nPos = nPos; zOA2chy4
oSavedFile.seek(nPos); m$B)_WW
} L~e{Vv8UR
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public synchronized int write(byte[] b,int nStart,int nLen) C^nTLw;K
{ SX@zDuM
int n = -1; <F-W fR
try{ $gysy!2}.
oSavedFile.write(b,nStart,nLen); ]%Z7wF</
n = nLen; pX]"^f1?O
} ~oE@y6Q
catch(IOException e) ^4[|&E:
{ v7G&`4~
e.printStackTrace (); c<]~q1
} S)vNWBO
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return n; G~KYFNHr
} f/{*v4!
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} ioJr2wq6
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/* (?lKedA>2
**SiteInfoBean.java zb& 3{,
*/ .Fm@OQr
package NetFox; L2\NTNY
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public class SiteInfoBean { ~dlpoT
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private String sSiteURL; //Site's URL c@/K}
private String sFilePath; //Saved File's Path FgTWym_
private String sFileName; //Saved File's Name ~(K{D
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private int nSplitter; //Count of Splited Downloading File #D|n6[Y'.t
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public SiteInfoBean() 'rDai[
{//nSplitter的缺省值为5 p-JGDjR0G
//default value of nSplitter is 5 8KHT"uc'*J
this("","","",5); -8m3L
} 9q_c`
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) QI*<MF,1
{ 1AAOg+Y@U"
sSiteURL= sURL; Sgq?r-Q.
sFilePath = sPath; sglH=0MP
sFileName = sName; i:\|G^h
this.nSplitter = nSpiltter; aDZ] {;
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} l" +q&3Zx
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public String getSSiteURL() R/Z
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{ d34BJ<
return sSiteURL; <#~n5W{l
} *^[j6
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public void setSSiteURL(String value) &AP`k
{ *I9O+/,
sSiteURL = value; dq^vK
} +a0` ,Jc
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public String getSFilePath() njckPpyb@
{ M$U Zn
return sFilePath; aDda&RM
} uS7kkzt-x
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public void setSFilePath(String value) ]8CgHT[^7
{ y7|
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sFilePath = value; S pk8u4
} xq<X:\O
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public String getSFileName() 2B"&WKk
{ frT<9$QUL
return sFileName; &gsBbQ+qA
} p> g[: ~
v W4n>h}]
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public void setSFileName(String value) %uDH_J|^
{ "NtY[sT{V
sFileName = value; }56WAP}Z 4
} >)+N$EN
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public int getNSplitter() a!B"WNb+
{ CN:z
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return nSplitter; ;@xlrj+
} '8=/v*j>?
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public void setNSplitter(int nCount) kxmc2RH>nB
{ "/Pq/\,R|
nSplitter = nCount; "{[\VsX|c
} gUY~
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} u6SQq-)d
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/* LB`{35b-
**Utility.java yt<h!k$ _P
*/ V.Tn1i-v
package NetFox; =YY 7V!
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public class Utility { es<8"CcP
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public Utility() 0+e
{ e,
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} ~*x 2IPiH
et?FX K"y
//线程睡眠 wf`A&P5tF
public static void sleep(int nSecond) d,toU I
{ <Xw\:5
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try{ EjMVlZC>
Thread.sleep(nSecond); :C2
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} 5XV|*O;
catch(Exception e) p6!5}dD(
{ t&