/* #Z\O}<
**SiteFileFetch.java FXV`9uq}Z
*/ $J.T$0pFa
package NetFox; k@V#HC{t
import java.io.*; ,_D"?o
import java.net.*; w1r$='*I
'CXRG$D
r[s!F=^
public class SiteFileFetch extends Thread { 'Hw4j:pS
nBN&.+3t
q@n^ZzTx
SiteInfoBean siteInfoBean = null; //文件信息Bean AVG>_$<
long[] nStartPos; //开始位置 `2`fiKm
long[] nEndPos; //结束位置 +Ng0WS_0
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ahJ1n<
long nFileLength; //文件长度 B<7/,d'
boolean bFirst = true; //是否第一次取文件 2| B[tt1Z
boolean bStop = false; //停止标志 >E:<E'L
File tmpFile; //文件下载的临时信息 eWvo,4
DataOutputStream output; //输出到文件的输出流 @m~RtC-Q
?7jg(`Yh
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !"Q}R p
public SiteFileFetch(SiteInfoBean bean) throws IOException _n"Ae?TP
{ &.Q8Mi
aT
siteInfoBean = bean; ymWgf6r<
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Ri#H.T<'
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); B@O@1?c[
if(tmpFile.exists ()) <*|?x86~
{ #`;/KNp 9
bFirst = false; WZZ4]cC
read_nPos(); iWE)<h
} -Xz&}QA
else K=?VDN
{ RKZ6}q1n
nStartPos = new long[bean.getNSplitter()]; `TtXZ[gP}
nEndPos = new long[bean.getNSplitter()]; mM/i^zT
} |.P/:e9
[u
M-0t
}CDk9Xk
4 o(bxs"
}
4f^C\i+q
pI;NL
[
TeQNFo^_8
public void run() 6Pn8f
{ >u0w.3r#
//获得文件长度 j>Ag\@2ME
//分割文件 T*~H m
//实例FileSplitterFetch %UZVb V
//启动FileSplitterFetch线程 C+{l7QT$t
//等待子线程返回 '9?;"=6(
try{ tNIlzR-
if(bFirst) s%pfkoOY%
{ %."@Q$lA
nFileLength = getFileSize(); N^w'Hw0
if(nFileLength == -1) ~D[?$`x:
{ re &E{
System.err.println("File Length is not known!"); DJ@|QQ
} wmU0E/{9]
else if(nFileLength == -2) AoaN22
{ [xb]Wf
System.err.println("File is not access!"); fP HLXg5s
} 7=XL!:P
else %7hB&[ 5
{ c+dg_*^
for(int i=0;i<nStartPos.length;i++) <#+44>h
{ WO</Mw
nStartPos = (long)(i*(nFileLength/nStartPos.length)); LN2D
} <3okiV=ox
for(int i=0;i<nEndPos.length-1;i++) 17.x0gW,
{ zsXoBD\h
nEndPos = nStartPos[i+1]; J#2!ZQE
3
} ? 1*m,;Z
nEndPos[nEndPos.length-1] = nFileLength; N#C1-*[C
} Q@@v1G\
} KvPX=/&Zu
up'
BV`- =wRC
//启动子线程 wJ<Oo@snm
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; h*B|fy4K9U
for(int i=0;i<nStartPos.length;i++) !ZRs;UZ>o
{ sZ<9A Xk-E
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), CjIu[S1%
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), mTNVU@TY=
nStartPos,nEndPos,i); `Y=WMNy
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); &w8)* T
fileSplitterFetch.start(); cLY c6
} 1xE]6he4{T
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Mg,:UC:
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); dq1:s1
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", #-% A[7Cdp
nEndPos = " + nFileLength); JPn$FQD
// fileSplitterFetch[nPos.length-1].start(); (b,[C\RBF
W5L iXM
$_H`
//等待子线程结束 I zbU)ud
//int count = 0; eM7Bc4V
//是否结束while循环 BvrB:%_:
boolean breakWhile = false; fFvF\
Zk8|K'oHx
OS|> t./U
while(!bStop) C[!MS5
{ E m
6Qe
write_nPos(); bI)u/
Utility.sleep(500); Wo~vhv$E
breakWhile = true; ig LMv+{
"1`Oh<={b
ph>7?3;t
for(int i=0;i<nStartPos.length;i++) JO<wK
{ "P-lSF?T
if(!fileSplitterFetch.bDownOver) 9+s.w25R
{ ml|W~-6l
breakWhile = false; Cv
ejb+
break; ?Iyo9&1&
} W!!S!JF
} obrl#(\P
if(breakWhile) 54-#QIx|
break; Uo12gIX
dz
[!-M
r0d35
//count++; m'\ 2:mDu0
//if(count>4) `LAR@a5i
// siteStop(); l
{jmlT
} [.hyZ}B
h_1T,f(
8}X5o]Mv
System.err.println("文件下载结束!"); ae"]\a\&1o
} Ghl'nqPlm
catch(Exception e){e.printStackTrace ();} 6
5y+Z
} Y{v(p7pl
:l7U>~ o
~c)~015`
//获得文件长度 ^<e@uNGg
public long getFileSize() ~_s?k3cd
{ 'TH15r@
int nFileLength = -1; OouPj@r
try{ [gy*`@w
URL url = new URL(siteInfoBean.getSSiteURL()); P`s
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -/{4Jf Wf
httpConnection.setRequestProperty("User-Agent","NetFox"); kr$b^"Ku
#P]#9Ty:
D`J6h,=2l/
int responseCode=httpConnection.getResponseCode(); g;$Xq)Dd
if(responseCode>=400) ?Kvl!F!`
{ ae:zWk'!
processErrorCode(responseCode); uZfnzd)c
return -2; //-2 represent access is error +dA ,P\
} L-B<nl
M?&h~V1OI~
|#1(Z-}
String sHeader; pwwH<0[
Y6,Rj:8
(x^BKnZ
for(int i=1;;i++) FO q1>>a0
{ OpM(j&
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); I;Vu W
//Utility.log(in.readLine()); yaq'Lt`
sHeader=httpConnection.getHeaderFieldKey(i); ) ri}nL.
if(sHeader!=null) p.+ho~sC,.
{ |#6QThK
if(sHeader.equals("Content-Length")) 3^s/bm$g
{ .h0b~nI>>
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); &>e-(4Xu
break; [mEql,x3
} U=hlu
} %IC73?
else =+t^ f
break; E0`Lg
c
} WTImRXK4
} K'K2X-E
catch(IOException e){e.printStackTrace ();} TuW %zF/
catch(Exception e){e.printStackTrace ();} rx(2yf
~QvqG{bFB
h?bb/T+'
Utility.log(nFileLength); p-1 3H0Kt
o9cM{ya/>
h3dsd
return nFileLength; &WNf
M+
} /dv<qp
U|g:`v7
/-#I_>:8'
//保存下载信息(文件指针位置) Sz H"
private void write_nPos() &\apwD
{ F(t=!k,4\
try{ ?c0xRO%y
output = new DataOutputStream(new FileOutputStream(tmpFile)); _`64gS}^
output.writeInt(nStartPos.length); JK.ZdY%
for(int i=0;i<nStartPos.length;i++) 3;%5Yu
{ ^bEc6`eE
// output.writeLong(nPos); L%>n>w
output.writeLong(fileSplitterFetch.nStartPos); \GHiLs,!
output.writeLong(fileSplitterFetch.nEndPos); =gcM%=*'
} lFTF ,G
output.close(); >yY'7Ey
} 2h[85\4
catch(IOException e){e.printStackTrace ();} 0P\$2lk
catch(Exception e){e.printStackTrace ();}
Z*-g[8FO
} S[7WW$lF
TDd{.8qf
6xD#?
//读取保存的下载信息(文件指针位置) hEh}PX:
private void read_nPos() *
S=\l@EW
{ Ur*6Gi6
try{ =0;^(/1Mc
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); F<!)4>2@
int nCount = input.readInt(); /4xki_}
nStartPos = new long[nCount]; 'uq#ai[5I
nEndPos = new long[nCount]; 4.IU!.Uo
for(int i=0;i<nStartPos.length;i++) Bdj%hyW
{ Y(44pA&oN
nStartPos = input.readLong(); #!)n
{h+
nEndPos = input.readLong(); >@"Oe
}
ss5m/i7
input.close(); da (km+
} ?JL:CBvCp
catch(IOException e){e.printStackTrace ();} C-iK$/U
catch(Exception e){e.printStackTrace ();} yRo-EP
} e^ v.)
jg?x&'u\)
{J^lX/D
private void processErrorCode(int nErrorCode) byv[yGa`
{ !"eIV@7
System.err.println("Error Code : " + nErrorCode); WJ_IuX51'
} :]J Ye*
vap,y $C
`X3^fg
//停止文件下载 I_A@BnM{I
public void siteStop() .l@xsJn
{ =+AS/Jq
bStop = true; Vb9',a?#n
for(int i=0;i<nStartPos.length;i++) .nyfYa+
fileSplitterFetch.splitterStop(); 1&e} ms
h[PYP5{L
}fKSqB]T-
}
=|9H
} D}vmwg@3
//负责部分文件的抓取 gB<3-J1R
**FileSplitterFetch.java 9Lr'YRl[W
*/ `3:.??7N
package NetFox; y
K"kEA[;
%Qj;, #z
8stwg'
import java.io.*; =9j8cC5y
import java.net.*; F+@5C:<?
t*?0D\b
2
e[8LmuIZ
public class FileSplitterFetch extends Thread { u?9" jX
!%c'$f/
clk[ /'1
String sURL; //File URL ,mj@sC>
long nStartPos; //File Snippet Start Position ~q~MoN<R
long nEndPos; //File Snippet End Position w+N> h;j
int nThreadID; //Thread's ID Uf, 4
boolean bDownOver = false; //Downing is over c
9jGq
boolean bStop = false; //Stop identical $ibuWb"a
FileAccessI fileAccessI = null; //File Access interface Q9Q|lO
$]8h $
*cEob b
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException DZ_lW
{ |_yYLYH'
this.sURL = sURL; O9r>E3-q
this.nStartPos = nStart; SCz(5[MZJ
this.nEndPos = nEnd; 2Y7)WPn
nThreadID = id; D&S26jrZ
fileAccessI = new FileAccessI(sName,nStartPos);//定位 #
0Lf<NZ
} ;s52{>&F]
9k 6r_G"
^.>jGI%rB
public void run() i@4~.iZ8
{ ?2oHZ%G
while(nStartPos < nEndPos && !bStop) E<c9#I=
{ v;0|U:`]
5Lf{8UxI
AhNq/?Q Q~
try{ xe*aC
URL url = new URL(sURL); ak;*W
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); A]DTUdL
httpConnection.setRequestProperty("User-Agent","NetFox"); 4)("v-p
String sProperty = "bytes="+nStartPos+"-"; !=N"vD*
httpConnection.setRequestProperty("RANGE",sProperty); *guoWPA|Ij
Utility.log(sProperty); d20gf:@BM
ZfB"
E
Yboiwy,n
InputStream input = httpConnection.getInputStream(); PP!SK2u"L
//logResponseHead(httpConnection); A$w4PVS
!U5Wr+83
}oNhl^JC
byte[] b = new byte[1024]; [h,Q Bz
int nRead; 0D&t!$Ibf
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) DS)RX.k_#
{ 3Oi
nK['
nStartPos += fileAccessI.write(b,0,nRead); VhNz8)
//if(nThreadID == 1) ]GRWnif
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3.qTLga|}
} d,=r9.
q5#J~n8Wr
ma((2My'H
Utility.log("Thread " + nThreadID + " is over!"); B:+6~&,-
bDownOver = true; xQ@^$_
//nPos = fileAccessI.write (b,0,nRead); |JVk&8
?8
} _~T!9
catch(Exception e){e.printStackTrace ();} 'CN|'W)g7
} *;fw%PW
} =|YxDas
QPfc(Z
^6_Cc
//打印回应的头信息 dX)GPC-D7
public void logResponseHead(HttpURLConnection con) sx`O8t
{ QV&D l_
for(int i=1;;i++) 67VT\f
{ uxzze~_+C
String header=con.getHeaderFieldKey(i); qk;{cfzHA
if(header!=null) xa
pq*oj
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 1Tm^
Utility.log(header+" : "+con.getHeaderField(header)); dx+hhg \L
else $]/Zxd
break; jb^N|zb
} oDU ;E
} ruazOmnn~
mzf+Cu:`v
FG)$y[*
public void splitterStop() !H}vu]R
{ iV eC=^1
bStop = true; .3MIcj=p
} ,Y>Bex_v
<0PT"ij
,.qMEMm
} r9ww.PpNk#
"1HRLci
k+DR]icv
/* $O dCL
**FileAccess.java gR}35:$Z-
*//文件访问(定位,写) 1)[]x9]^q'
package NetFox; PgRDKygE
import java.io.*; &