/* F[Dhj,C"
**SiteFileFetch.java pPUv8, %
*/ P"`OuN
package NetFox; `ySmzp
import java.io.*; F d:A^]
import java.net.*; 69U[kW&
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public class SiteFileFetch extends Thread { DwXzmp[qWH
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SiteInfoBean siteInfoBean = null; //文件信息Bean 3,@I`
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long[] nStartPos; //开始位置 U*G9 fpVy
long[] nEndPos; //结束位置 `!?SA<a:
FileSplitterFetch[] fileSplitterFetch; //子线程对象 o|\0IG(\
long nFileLength; //文件长度 FF:Y7wXW
boolean bFirst = true; //是否第一次取文件 hjB G`S#
boolean bStop = false; //停止标志 fL9R{=I%
File tmpFile; //文件下载的临时信息 >gAq/'.Q
DataOutputStream output; //输出到文件的输出流 ;~Eb Q
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) g{&a|NU^
public SiteFileFetch(SiteInfoBean bean) throws IOException ,nqG*
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{ &j}\ZD
siteInfoBean = bean; Las4ux[_
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ;m{*iKL6{
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 2| u 'J
if(tmpFile.exists ()) X4emhB
{ >|jSd2_p
bFirst = false; ?MevPy`H
read_nPos(); g:/l5~b
} z= pb<Y@X
else ' bio:1
{ Fx']kn9
nStartPos = new long[bean.getNSplitter()]; e-;$Iv
nEndPos = new long[bean.getNSplitter()]; ,fQc0gM=[
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}
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public void run() hv
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{ o0Qy?14T-
//获得文件长度 ~ g$Pb[V
//分割文件 ;L.@4b[lP
//实例FileSplitterFetch YC\~PVG
//启动FileSplitterFetch线程 :&Xy#.un
//等待子线程返回 is`Eqcj`dr
try{ '|n-w\
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if(bFirst) gCAWRNp
{ b'`8$;MII
nFileLength = getFileSize(); w~>V2u_-
if(nFileLength == -1) ~JY<DW7
{ 9,y*kC
System.err.println("File Length is not known!"); E!J;bX5
} /C29^ P
else if(nFileLength == -2) ^ +cf
{ T'2(sHk
System.err.println("File is not access!"); s
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} UX=JWb_uGm
else 9|O#+_=+v
{ X"<t3l(+
for(int i=0;i<nStartPos.length;i++) c,;-[sn
{ DWDL|4
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); .Rxz;-VA
} <N^2|*3
for(int i=0;i<nEndPos.length-1;i++) E7^r3#s
{ Kxb_9y0`r
nEndPos = nStartPos[i+1]; +~Ri CZt
} {4tJT25
nEndPos[nEndPos.length-1] = nFileLength; G@b|{!
} 2w93 ~j
} jLc4D'
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//启动子线程 h_L-M}{OG
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; t>><|~wp
for(int i=0;i<nStartPos.length;i++) ZZp6@@zyq'
{ \"i2E!
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !q!.OQ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), e>1z1Q;_uv
nStartPos,nEndPos,i); %{s<h6{R
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); rWEJCFa
fileSplitterFetch.start(); BKe~y
} Kf
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), d4F3!*@(
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1);
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// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8@ck" LUzD
nEndPos = " + nFileLength); *j RNpB{)z
// fileSplitterFetch[nPos.length-1].start(); GL'zs8AKf
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//等待子线程结束 5O<7<OB
//int count = 0; GZQy~Uk~
//是否结束while循环 /<)A!Nn+F
boolean breakWhile = false; Fu:VRul=5$
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while(!bStop) &wr0HrE\
{ ]Sg4>tp
write_nPos(); ZW
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Utility.sleep(500); -Zd0[& ']
breakWhile = true; }stc]L{79
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for(int i=0;i<nStartPos.length;i++) #x!h
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{ Kf#9-.}?
if(!fileSplitterFetch.bDownOver) HM ;9%rtO
{ AdDlS~\?
breakWhile = false; !=M[u+-
break; FjD`bhw-
} 5SKj% %B2,
} Hy~kHBIL
if(breakWhile) raRb
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break; %_N-~zZ1E
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//count++; 6jT+kq)
//if(count>4) &|'k)6Rx
// siteStop(); R@Ch3l@
} n5h4]u
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System.err.println("文件下载结束!"); udYk
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} :^7/+|}9p
catch(Exception e){e.printStackTrace ();} [;yEG$)K
} 60?/Z2w5
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//获得文件长度 f/Cf2
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public long getFileSize() :s|" ZR
{ \UZlFE
int nFileLength = -1; iQs7Ly"
try{ #1c%3KaZI
URL url = new URL(siteInfoBean.getSSiteURL()); H]2cw{2
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I\eM8`Y$
httpConnection.setRequestProperty("User-Agent","NetFox"); T;jy2|mLo
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int responseCode=httpConnection.getResponseCode(); i!5zHn
if(responseCode>=400) znm3b8ns
{ \D
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processErrorCode(responseCode); {akS K
return -2; //-2 represent access is error VnqgN
} LDilrG)
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String sHeader; );-?~
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for(int i=1;;i++) };{V]f 0
{ t2V|moG
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); XNODDH
//Utility.log(in.readLine()); OEMYS I%
sHeader=httpConnection.getHeaderFieldKey(i); 'vbrzI5m
if(sHeader!=null) `r?xo7
{ Y|%s =0M
if(sHeader.equals("Content-Length")) -.XICKz
{ [1Cs
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); pGS!Nn;K2
break; 2/[J<c\G
} fGK=lT$
} T;?=,'u
else c)L1@ qdZ
break; W>^WNo3YQ$
} JI"&3H")g%
} uNXKUJ V0
catch(IOException e){e.printStackTrace ();} m6iQB\ \
catch(Exception e){e.printStackTrace ();} {OGv1\ol&
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Utility.log(nFileLength); Kq4b`cn{_
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return nFileLength; 1_V',0|`>
} 8D5v'[j-
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//保存下载信息(文件指针位置) 'A)r)z{X
private void write_nPos() riz[AAB
{ ]s<}'&
try{ EN/e`S$)
output = new DataOutputStream(new FileOutputStream(tmpFile)); #24eogo~
output.writeInt(nStartPos.length); 9n!IdqKN
for(int i=0;i<nStartPos.length;i++) *r|)@K|
{ pj/w9j G6
// output.writeLong(nPos); ^!yJ;'H\
output.writeLong(fileSplitterFetch.nStartPos); jp|1S^b
output.writeLong(fileSplitterFetch.nEndPos); 8AQ@?\Rc"2
} ZGZ+BOFL
output.close(); p0Ra`*f
} |xX>AMZc)D
catch(IOException e){e.printStackTrace ();} VY]L<4BfGL
catch(Exception e){e.printStackTrace ();} zM+eb| >cr
} H){lXR/#u
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//读取保存的下载信息(文件指针位置) qG?svt
private void read_nPos() H(,D5y`k1
{ ;[R#:Rk
try{ f\]splL
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); HLsG<#
int nCount = input.readInt(); =&YhA}l\O
nStartPos = new long[nCount]; sBV})8]KM
nEndPos = new long[nCount]; Lj#K^c Ee
for(int i=0;i<nStartPos.length;i++) V9cKl[
{ Pt^SlX^MM
nStartPos = input.readLong(); 3qNLosm#M
nEndPos = input.readLong(); ^j>w<ljzz
} uE%$<o*#
input.close(); 5*P+c(=
} zc#$hIi
catch(IOException e){e.printStackTrace ();} ~]LkQQ'
catch(Exception e){e.printStackTrace ();} xG"*w@fs7
} 4Ow0g-{
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private void processErrorCode(int nErrorCode) N:nhS3N<L
{ 0<'Q;'2* L
System.err.println("Error Code : " + nErrorCode); EnD}|9
} SG@-b(
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//停止文件下载 >uR0Xs;V
public void siteStop() 6xq/
{ Fh0cOp(
bStop = true; & Y Y^Bd#
for(int i=0;i<nStartPos.length;i++) BfUM+RC%5
fileSplitterFetch.splitterStop(); Al-;-t#Dc
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} +$y%H
} HmQ.'
//负责部分文件的抓取 bpp{Z1/4
**FileSplitterFetch.java r=74'g
*/ NcMohpkq
package NetFox; CaE1h9
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import java.io.*; ~dz,eB
import java.net.*; K~6,xZlDWM
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public class FileSplitterFetch extends Thread { 734f&2
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String sURL; //File URL d.3cd40Q
long nStartPos; //File Snippet Start Position ,*MAteD
long nEndPos; //File Snippet End Position ;vuqI5k
int nThreadID; //Thread's ID xmXuBp:M(R
boolean bDownOver = false; //Downing is over <reALC
boolean bStop = false; //Stop identical -g\ ;B
FileAccessI fileAccessI = null; //File Access interface :}*
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException oT0TbZu%
{ 7U647G(Sg
this.sURL = sURL; [L ?^+p>
this.nStartPos = nStart; -~] q?k?
this.nEndPos = nEnd; X 7R&>Pf
nThreadID = id; N(Sc!rX
fileAccessI = new FileAccessI(sName,nStartPos);//定位 ^gSZzJ5
} <{P`A%g@
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public void run() G0~6A@>
{ 9_-6Lwj6t
while(nStartPos < nEndPos && !bStop) Ygq;jX
{ Lvd es.0|
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try{ 4&kC8
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URL url = new URL(sURL); CuT50N;tk
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); NH'Dz6K5
httpConnection.setRequestProperty("User-Agent","NetFox"); 572{DC&T
String sProperty = "bytes="+nStartPos+"-"; _)kTlX:,
httpConnection.setRequestProperty("RANGE",sProperty); b[KZJLZ)
Utility.log(sProperty); dt|| nF
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InputStream input = httpConnection.getInputStream(); Bwl@Muw
//logResponseHead(httpConnection); {/}%[cY=
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byte[] b = new byte[1024]; < Dt/JA(p
int nRead; ;-AC}jG
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) WZM
{ FrC)2wX
nStartPos += fileAccessI.write(b,0,nRead); Ozg,6&3ji
//if(nThreadID == 1) J9-n3o
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,@kLH"a0
} gA}?X
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Utility.log("Thread " + nThreadID + " is over!"); yV*jc`1
bDownOver = true; I(H9-!&
//nPos = fileAccessI.write (b,0,nRead); uJ`:@Z^J
} " GY3sam
catch(Exception e){e.printStackTrace ();} o3$dl`'
} H<3:1*E
} Re+oCJ
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//打印回应的头信息 iJH?Z,Tjf
public void logResponseHead(HttpURLConnection con) RzU9]e
{ zZ,"HY=jN
for(int i=1;;i++) xR8y"CpE
{ +%H=+fJ2}
String header=con.getHeaderFieldKey(i); orOq5?3
if(header!=null) }@"v7X $
//responseHeaders.put(header,httpConnection.getHeaderField(header)); `=S%!akj
Utility.log(header+" : "+con.getHeaderField(header)); WcQkeh3n
else r
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break; +IMt$}7[
} -24ccN;
} @Ko#nDEq
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public void splitterStop() 3-oKY*jO
{ $&!|G-0'
bStop = true; I:w+lchAMe
} 6VS_L@
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} EI)2c.A
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/* sgnc$x"
**FileAccess.java /EJy?TON*
*//文件访问(定位,写) scTt53v^
package NetFox; %%#bTyF
import java.io.*; Ms5R7<O.7
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public class FileAccessI implements Serializable{ 4'tY1d
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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 of
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RandomAccessFile oSavedFile; ?*[35XUd
long nPos; .;S1HOHz4
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public FileAccessI() throws IOException kem(U{m
{ :6Tv4ZUvcG
this("",0); d'H gek{T
} mi7~(V>
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public FileAccessI(String sName,long nPos) throws IOException uRYq.`v,
{ K r<UPr
oSavedFile = new RandomAccessFile(sName,"rw"); lgD%
this.nPos = nPos; AX'-}5T=
oSavedFile.seek(nPos); /{/mwS"W
} d(@ ov^e-
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public synchronized int write(byte[] b,int nStart,int nLen) [Q\(kd*4
{ /d/]#T[Z9
int n = -1; bE@Eiac
try{ kY6_n4
oSavedFile.write(b,nStart,nLen); ,rF!o_7
n = nLen; )>^ Ge9d]
} ):nC%0V
catch(IOException e) JoZzX{eu"
{ :XoR~syT
e.printStackTrace (); )O$S3ojZ
} ,7DyTeMpN
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return n; \PFj w9s
} ${}9/(x/^
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} *J
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/* }_mMQg2>=
**SiteInfoBean.java SQ]M"&\{y
*/ 84i0h$ZZo
package NetFox; ?YDMl
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public class SiteInfoBean { x9 n(3Oa
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private String sSiteURL; //Site's URL gS`Z>+V5!c
private String sFilePath; //Saved File's Path %da-/[
private String sFileName; //Saved File's Name "Vp:Sq9y
private int nSplitter; //Count of Splited Downloading File rSm#/)4A
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public SiteInfoBean() *P5/ S8c
{//nSplitter的缺省值为5 Goy[P2m
//default value of nSplitter is 5 )KkV<