/* :dt[ #
**SiteFileFetch.java K[y")ooE<j
*/ Y2DL%'K^
package NetFox; _BP%@o
import java.io.*; |E >h*Y
import java.net.*; $YX{gk>
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public class SiteFileFetch extends Thread { 6RbDc*
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SiteInfoBean siteInfoBean = null; //文件信息Bean NIQ}A-b
long[] nStartPos; //开始位置 q8$t4_pF
long[] nEndPos; //结束位置 "\@J0|ppb
FileSplitterFetch[] fileSplitterFetch; //子线程对象 @4;'>yr(
long nFileLength; //文件长度 Gt&yz"?D
boolean bFirst = true; //是否第一次取文件 z[f]mU
boolean bStop = false; //停止标志 CC=I|/mBM
File tmpFile; //文件下载的临时信息 X]y8-}Qf
DataOutputStream output; //输出到文件的输出流 -4x! #|]
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4+hNP'e
public SiteFileFetch(SiteInfoBean bean) throws IOException FXr^ 4B}
{ 9W=(D|,,
siteInfoBean = bean; 0HWSdf|w
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <Z-Pc?F&(k
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); QKP
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if(tmpFile.exists ()) 9YI@c_1 Q
{ $}(Z]z}O ;
bFirst = false; g}hUCx(
read_nPos(); }p?,J8=-
} @S3 L%lOH
else eI
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{ ]izHn; +
nStartPos = new long[bean.getNSplitter()]; fR[8O\U~
nEndPos = new long[bean.getNSplitter()]; LhAN( [
} .h
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public void run() DTC
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{ ky|k g@n{
//获得文件长度 cy@oAoBq
//分割文件 _kBmKE
//实例FileSplitterFetch e5AsX.kvB
//启动FileSplitterFetch线程 |\Gkhi>;
//等待子线程返回 <,DMD
try{ OF*E1BM
if(bFirst) EJ
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{ nP*DZC0kE&
nFileLength = getFileSize(); O_ r-(wE4
if(nFileLength == -1) YN)qMI_`A
{ `}t5` :#k
System.err.println("File Length is not known!"); 2.nT k
} \#biwX
else if(nFileLength == -2) w)<.v+u.Y
{ roZn{+f
System.err.println("File is not access!"); B[mZQ&Gz`a
} b6;MTz*k>
else j(I(0Yyh
{ +mG"m hF
for(int i=0;i<nStartPos.length;i++) MA{ZmPm)
{ %l%ad-V
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 1WaQWZ:=
} [GCaRk>b,
for(int i=0;i<nEndPos.length-1;i++) vZQraY nJ
{ I5j|\ /Ht
nEndPos = nStartPos[i+1]; jKcl{',
} .HTRvE`X
nEndPos[nEndPos.length-1] = nFileLength; iPCn-DoIS
} 0{d)f1
} fvta<
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//启动子线程 l^tRy_T:-
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ??Urm[Y.Z
for(int i=0;i<nStartPos.length;i++) i%i s<'
{ b$Ei>%'/";
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @(6P L^I
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), t0<RtIh9e
nStartPos,nEndPos,i); P7X3>5<;q
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?W dY{;&
fileSplitterFetch.start(); yz>S($u
} sc-+?i
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !F?j'[s8]
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); r0f&n;0U4
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", d8Cd4qIXX
nEndPos = " + nFileLength); >}Mw"
// fileSplitterFetch[nPos.length-1].start(); `o{_+Li9
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//等待子线程结束 8YPX8d8u
//int count = 0; mxH63$R
//是否结束while循环 LGtw4'yr
boolean breakWhile = false; ijcF[bmE
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while(!bStop) B)d 4]]4\\
{ "Qc4v@~)
write_nPos(); 4K~>
Utility.sleep(500); r^E(GmW
breakWhile = true; _iA oNT!
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for(int i=0;i<nStartPos.length;i++) wU/fGg*M2
{ .2|(!a9W
if(!fileSplitterFetch.bDownOver) 1TzwXX7
{ $PlMyLu7jc
breakWhile = false; ;xFB
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break; /A>nsN?:]
} 6c>:h)?
} <RbsQ^U
if(breakWhile) ^VnnYtCRz
break; 71IM`eL=ED
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//count++; 9%Vy,
//if(count>4) %<|<%~l&
// siteStop(); n%}#e!
} {QN 5QGvK
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System.err.println("文件下载结束!"); i}f" 'KW
} O#{`Fj`
catch(Exception e){e.printStackTrace ();} GAs.?JHd
} svt3gkR0
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//获得文件长度 ww+,GnV
public long getFileSize() A&ceuu
{ Rb^G~82d?
int nFileLength = -1; B<.ZW}#v
try{ EZp >Cf7
URL url = new URL(siteInfoBean.getSSiteURL()); ; Ob^@OM
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]W`M
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httpConnection.setRequestProperty("User-Agent","NetFox"); 8F$]@0v`%
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int responseCode=httpConnection.getResponseCode(); Gy6x.GX
if(responseCode>=400) YoK )fh$
{ 9B>P Qbs
processErrorCode(responseCode); }Q^*Zq9-
return -2; //-2 represent access is error 3:c6x kaw
} cUw$F{|W
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String sHeader; &tiJ=;R1
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for(int i=1;;i++) {g4w[F!77
{ !X[7m
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ());
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//Utility.log(in.readLine()); pz{ ]O_px
sHeader=httpConnection.getHeaderFieldKey(i); &:}WfY!hX
if(sHeader!=null) J9J/3O
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{ XrXW6s;Z
if(sHeader.equals("Content-Length")) |v#rSVx
{ ~?iQnQYI
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); o>]z~^c
break; m*lcIa
} yI-EF)A@;
} oykb8~u}}
else 5CfD/}{:#I
break; U{@2kg-
} (*T$:/zIS
} 2P=~6(
catch(IOException e){e.printStackTrace ();} fL-$wK<p<
catch(Exception e){e.printStackTrace ();} Vhe$vH
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Utility.log(nFileLength); /z}b1m+
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return nFileLength; g<$2#c}
} ?1LRR
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//保存下载信息(文件指针位置) v@J[qpX
private void write_nPos() ?jvuTS 2
{ #\K"FE0PGz
try{
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output = new DataOutputStream(new FileOutputStream(tmpFile)); mwZ)PySm)
output.writeInt(nStartPos.length); lPtML<a
for(int i=0;i<nStartPos.length;i++) Jm 0.\[J
{ <29K!
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// output.writeLong(nPos); \#N?
output.writeLong(fileSplitterFetch.nStartPos); r'o378]=
output.writeLong(fileSplitterFetch.nEndPos); i
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} H%}/O;C
output.close(); |tse"A5Z
}
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catch(IOException e){e.printStackTrace ();} QTN'yd?WE
catch(Exception e){e.printStackTrace ();} vbG&F.P
} 43O5|8o
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//读取保存的下载信息(文件指针位置) "-rqL
private void read_nPos() H_aG\
{ 5;HCNwX
try{ Zzb?Nbf
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); bUYjmb2g)
int nCount = input.readInt(); <:8Ew
nStartPos = new long[nCount]; YJ~mcaw
nEndPos = new long[nCount]; K7nyQGS
for(int i=0;i<nStartPos.length;i++) >
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{ _]eyt_
nStartPos = input.readLong(); qmvQd8|XR
nEndPos = input.readLong(); N\rL ~4/
} MGre_=Dm_
input.close(); G68@(<<Z
} ;=6EBP%
catch(IOException e){e.printStackTrace ();} ,^DP
catch(Exception e){e.printStackTrace ();} *O_^C
} 3Y&4yIx
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private void processErrorCode(int nErrorCode) _,d<9 Y)
{ &rl;+QS
System.err.println("Error Code : " + nErrorCode); roBb8M|q
} ~_g{P3
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//停止文件下载 | :id/
public void siteStop() )%lPKp4]
{ {2i8]Sp1d/
bStop = true; 33&\E- Q>
for(int i=0;i<nStartPos.length;i++) Hk(=_[S
fileSplitterFetch.splitterStop(); Mq'm
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} pUW7p
} RAuVRm=E
//负责部分文件的抓取 w8 `1'*HG
**FileSplitterFetch.java k_Y7<z0G
*/ es=OWJt^
package NetFox; Ki&a"Fu3
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import java.io.*; Htln <N
import java.net.*; &
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public class FileSplitterFetch extends Thread { 1uB$@a\
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String sURL; //File URL |{_>H'
long nStartPos; //File Snippet Start Position $J&c1
long nEndPos; //File Snippet End Position hhFO,
int nThreadID; //Thread's ID 7T t!hf
boolean bDownOver = false; //Downing is over ]]3rSXs2}J
boolean bStop = false; //Stop identical j]vEo~Bbh
FileAccessI fileAccessI = null; //File Access interface Nd{U|k3pL
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ,LxkdV
{ TY'61xWi
this.sURL = sURL; IOY7w"|LW
this.nStartPos = nStart; N]6t)Zv
this.nEndPos = nEnd; %qTIT?6'
nThreadID = id; #N'9
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 ZmNNR 1%/
} p(8 @
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public void run() 2A:h&t/|C
{ \xv(&94U
while(nStartPos < nEndPos && !bStop) G.v(2~QFd
{ {8`$~c
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try{ a(ITv roM/
URL url = new URL(sURL); sf# px|~9
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); RVLVY:h|F
httpConnection.setRequestProperty("User-Agent","NetFox"); 4RYH^9;>K
String sProperty = "bytes="+nStartPos+"-"; @qj]`}Gx'
httpConnection.setRequestProperty("RANGE",sProperty); |r36iUHZS
Utility.log(sProperty); Id>4fF:o
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InputStream input = httpConnection.getInputStream(); D}j`T
//logResponseHead(httpConnection); cC+2%q B
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byte[] b = new byte[1024]; 0Oc?:R'$
int nRead; $(]nl%<Q
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) X{OWDy
{ !2Z"Lm
nStartPos += fileAccessI.write(b,0,nRead); 85;bJfY
//if(nThreadID == 1) SgehOu
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); )|^8`f
} jlFlhj:/I
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Utility.log("Thread " + nThreadID + " is over!"); 0 yq
bDownOver = true; vv{+p(~**O
//nPos = fileAccessI.write (b,0,nRead); 4KnBb_w
} zB~< @
catch(Exception e){e.printStackTrace ();} Y:t?W
} :zLf~W
} T<?kH
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//打印回应的头信息 s&-MJ05y
public void logResponseHead(HttpURLConnection con) aekke//y
{ *kg->J
for(int i=1;;i++) |iUC\F=-
{ g$?^bu dxv
String header=con.getHeaderFieldKey(i); Q{L:pce-
if(header!=null) ]+W){W=ai
//responseHeaders.put(header,httpConnection.getHeaderField(header)); O=(F46 M
Utility.log(header+" : "+con.getHeaderField(header)); EwA*
else 4gsQ:3
break; 7bihP@I!
} ZDgT"53
} ^-[
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public void splitterStop() wCruj`$
{ Zis,%XY
bStop = true; ^jwzCo-
} t'@mUX:-A
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} fx[&"$X
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/* }6/M5zF3
**FileAccess.java H>+])~#
*//文件访问(定位,写) fe98Y-e
package NetFox; HbsNF~;
import java.io.*; Opc szq5n
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public class FileAccessI implements Serializable{ ['.])
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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 "g&f:[a/
RandomAccessFile oSavedFile; H~:oW~Ah
long nPos; -ZZJk-::
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public FileAccessI() throws IOException `cXLa=B)9
{ >RkaFcq
this("",0); 8X"4RyNSn
} 6{=U=
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public FileAccessI(String sName,long nPos) throws IOException u@ #%SX
{ $jE<n/8
oSavedFile = new RandomAccessFile(sName,"rw"); EOXkMr
this.nPos = nPos; otR7E+*3
oSavedFile.seek(nPos); IONo&~-l
} vjx'yh|
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public synchronized int write(byte[] b,int nStart,int nLen) K6p\ >J
{ _uMG?Sbx
int n = -1; aO&{.DO2
try{ 9U6$-]J
oSavedFile.write(b,nStart,nLen); K {v^Y,B
n = nLen; _Fa\y ZX
} Jj>Rzj!m
catch(IOException e) N wk
{ bXF8V
e.printStackTrace (); D!,5j_,j%
} y1%OH#:duD
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return n; I!*P' {lh
} B]G2P`sN
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} fGlvum
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/* B+Qf?1f
**SiteInfoBean.java EtN,
*/ %QEBY>|lI
package NetFox; N'ER!=l)
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public class SiteInfoBean { z.-yL,Rc`-
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private String sSiteURL; //Site's URL @e3+Gs
private String sFilePath; //Saved File's Path )y*&&q
private String sFileName; //Saved File's Name *mp:#'
private int nSplitter; //Count of Splited Downloading File D r(0w{5
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public SiteInfoBean() 5WHz_'c
{//nSplitter的缺省值为5 zU&Iy_Ke.
//default value of nSplitter is 5 { im?tZ,
this("","","",5); V_J0I*Qa4
} k37?NoT
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) g@>llve{
{ '=E;^'Rl
sSiteURL= sURL; 3oLF^^^g
sFilePath = sPath; kiM:(=5
sFileName = sName; IsI5c
this.nSplitter = nSpiltter; yHw @Z
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} EO)JMV?6
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public String getSSiteURL() vK)'3%
{ Zo&i0%S\E
return sSiteURL; vlkwWm
} $8eiifj
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public void setSSiteURL(String value) #9|&;C5',!
{ d9S/_iCI
sSiteURL = value; 0o>C,
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} {FvFah
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public String getSFilePath() b:F;6X0~Hl
{ iuY,E
return sFilePath; xS1n,gTA
} USyc D`
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public void setSFilePath(String value) ^>l <)$s
{ -8qCCV&1i
sFilePath = value; 7zw0g~+
} ?P0b/g
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public String getSFileName() 3F|p8zPS
{ h}SZ+G/L
return sFileName; A3/[9}(U
} \09A"fs{
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public void setSFileName(String value) HZ'rM5Kq
{ F@Sk=l(
sFileName = value; z<5 5[~3
} 2@tnOs(*
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public int getNSplitter() o C|oh
{ z9S
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