/* v!?bEM3D
**SiteFileFetch.java 'M185wDdAl
*/ Ar4E $\W
package NetFox; LAeJz_9U
import java.io.*; g1VdP[Y#
import java.net.*; LY2oBX@fC
|;_NCy8i3X
%se4aeOrX
public class SiteFileFetch extends Thread { B7(~m8:eH7
Q[_{:DJA
OiNzN.}d
SiteInfoBean siteInfoBean = null; //文件信息Bean _x 'R8/
long[] nStartPos; //开始位置 pkpD1c^
long[] nEndPos; //结束位置 IRNL(9H
FileSplitterFetch[] fileSplitterFetch; //子线程对象 |WH'aGG
long nFileLength; //文件长度 QlJ
cj+_h
boolean bFirst = true; //是否第一次取文件 h`dtcJ0
boolean bStop = false; //停止标志 ,<F =\G_f
File tmpFile; //文件下载的临时信息 m8eyAvi6
DataOutputStream output; //输出到文件的输出流 w*<XPBi
NR-d|`P;
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ?>5[~rMn
public SiteFileFetch(SiteInfoBean bean) throws IOException jW*|Mu>2
{ TjxZ-qw<
siteInfoBean = bean; <uUQ-]QOIh
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); yjUZ40Dq
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Ov"]&e(I[
if(tmpFile.exists ()) PE3FuJGz
{ QU^*(HGip
bFirst = false; r#iZ FL3q
read_nPos(); Jm$.$B&I
} }]_/:KUt
else aAZS^S4v
{ K,e"@G
nStartPos = new long[bean.getNSplitter()]; 0UZ>y/
C)=
nEndPos = new long[bean.getNSplitter()]; fyPpzA0
} ^I03PIy0l
9Z]~c^UB
o&P}GcEIw
$&/JY
} n/#zx:d?
3ny>5A!;2
}S51yDV G_
public void run() tFt56/4
{ zY~
//获得文件长度 5vs~8|aRo
//分割文件 nf&PDv1
//实例FileSplitterFetch ;q]Jm
//启动FileSplitterFetch线程 dfY(5Wc+f
//等待子线程返回 GL$!JKWp
try{ 0X@!i3eu
if(bFirst) b/'{6zn
{ 3~Od2nk(x
nFileLength = getFileSize(); uc!j`G*]
if(nFileLength == -1) S9R(;
{ fe
PH=C
System.err.println("File Length is not known!"); .?R~!K{`
} iSu7K&X9q
else if(nFileLength == -2) w>Iw&US
{ ,?k[<C
System.err.println("File is not access!"); IvGQ7
VLr
} "s!!\/^9C
else \MBbZB9@
{ 2g5i3C.q$
for(int i=0;i<nStartPos.length;i++) HA&7
ybl
{ Jb~$Vrdy
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Z-|.j^n
} |S.G#za
for(int i=0;i<nEndPos.length-1;i++) I^"ouM9}Q
{ /aS= vjs
nEndPos = nStartPos[i+1]; D\|$!i}
} m=D2|WA8
nEndPos[nEndPos.length-1] = nFileLength; yO*~)ALb+
} -4ry)isYx
} mM&Sq;JJ;
[8|Y2Z\N
@_s`@,=
//启动子线程 Ie{98
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Qt` hUyL
for(int i=0;i<nStartPos.length;i++) /jl{~R#1
{ ]&6# {I-
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), HS> (y2}'
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), xIu#
nStartPos,nEndPos,i); Py*( %
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); M)S(:Il6Xx
fileSplitterFetch.start(); z~&uLu
} -^sW{s0Rc
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m(CW3:|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); j1{|3#5V
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", d 90
nEndPos = " + nFileLength); gGF]Dq
// fileSplitterFetch[nPos.length-1].start(); p3>(ZWPNV
)_bc:6Q
TNe,'S,%
//等待子线程结束 ZrY#B8
//int count = 0; p}q27<O*/
//是否结束while循环 $ N`V%<W
boolean breakWhile = false; 9U[Gh97Sf
|dIP &9
zVN/|[KP4
while(!bStop) GL;@heP
{ 3ARvSz@5
write_nPos(); Gk_%WY*
Utility.sleep(500); Z]?Tx2|7
breakWhile = true; N(i%Oxp1
q#LB 2M
>[t0a"
for(int i=0;i<nStartPos.length;i++) ^u'hl$`^
{ "XPBNv\>_
if(!fileSplitterFetch.bDownOver) $VEG1]/svp
{ _|<kKfd?
breakWhile = false; l-s%3E3
break; cs[_TJo
} EWOS6Yg7
} p7 s#j
if(breakWhile) >tF3|:\
break; 'Cv,:Q
]0N'Wtbn
aD)$aK
//count++; !ieMhJ5r
//if(count>4) oh*Hzb
// siteStop(); n>Cl;cN=
} wq yw#)S
@ig'CF%(
x_za
R}WI
System.err.println("文件下载结束!"); rJLn=|uR
} 3V=(P.A Tm
catch(Exception e){e.printStackTrace ();} aq~>$CHa
} -s~6FrKy
y?=W
$ti*I;)h4
//获得文件长度 '{]1!yMh
public long getFileSize() E/bIq}R6
{ vW6
a=j8
int nFileLength = -1; 5cc;8i
try{
lMkDLobos
URL url = new URL(siteInfoBean.getSSiteURL()); .CJQ]ECl7p
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Xae0xs
httpConnection.setRequestProperty("User-Agent","NetFox"); d)@Hx8
'ec G:B`S
(!b_o A8V
int responseCode=httpConnection.getResponseCode(); E :gS*tsY
if(responseCode>=400) w+A:]SU
{ Skb,cKU
processErrorCode(responseCode); 0e./yPTT
return -2; //-2 represent access is error 'XW[uK]w)
}
>?Y)evW
lT.Q)(
&d,chb(
String sHeader; \9;SOA v
_N`'R.va
zk6al$3R
for(int i=1;;i++) RYhaQ&1i
{ )"( ojh
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 8aDSRfv*
//Utility.log(in.readLine()); ,m4M39MWJ
sHeader=httpConnection.getHeaderFieldKey(i); JA]TO(x
if(sHeader!=null) 0!4;."S
{ G.j R
if(sHeader.equals("Content-Length")) '5^$v{
{ g/*x;d=
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); m(2(Caz{
break; "n<rP 3y
} 7JC^+rk
} c}XuzgSY
else )q.Z}_,)@
break; ^O>G?a
} Th!.=S{Y5
} T6/d[SH>
catch(IOException e){e.printStackTrace ();} ! z!lQ~
catch(Exception e){e.printStackTrace ();} Y!3Mm*
3k%fY
Qu 7#^%=
Utility.log(nFileLength); )gX7qQ
z@70{*
4}i2j
return nFileLength; 3K{XT),
} A%Ov.~&\G
=J@M,mbHg
r'TxYM-R
//保存下载信息(文件指针位置) [_$r- FA
private void write_nPos() :eK(9o
{ Vgh;w-a
try{ Z)JJ-V!
output = new DataOutputStream(new FileOutputStream(tmpFile)); |AosZeO_
output.writeInt(nStartPos.length); ~Onj|w7
for(int i=0;i<nStartPos.length;i++) N3M:|D
{ N+)gYb6h
// output.writeLong(nPos); ]YQ!i@Y
output.writeLong(fileSplitterFetch.nStartPos); f+}Rj0A
output.writeLong(fileSplitterFetch.nEndPos); /5x~3~
} } kNbqwVP
output.close(); ]mfI$p%
} <V> [H7
catch(IOException e){e.printStackTrace ();} rwZI;t$hf
catch(Exception e){e.printStackTrace ();} tQ:g#EqL9B
} KBUClx?
C(=$0FIR
h;q=<[h\
//读取保存的下载信息(文件指针位置) m=saUhI*9
private void read_nPos() ">{Ruv}$
{ 4jWzYuI&J
try{ s=[Tm}[
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); B #[URZ9S
int nCount = input.readInt(); ~ RdD6V
nStartPos = new long[nCount]; '7'*+sgi$
nEndPos = new long[nCount]; Mz?xvP?z
for(int i=0;i<nStartPos.length;i++) fG *1A\t]
{ \vH /bL
nStartPos = input.readLong(); G<F+/Oi&DX
nEndPos = input.readLong(); Gky
e
} EnM }H9A
input.close(); 9S<87sO
} FJ/>=2^B
catch(IOException e){e.printStackTrace ();} 9+z5$
catch(Exception e){e.printStackTrace ();} RFsd/K; Zp
} [RAzKzC\M
%VV\biO]
rNi]|)-ET
private void processErrorCode(int nErrorCode) $ 8"we
{ t:NYsL
System.err.println("Error Code : " + nErrorCode); tQ,,krw~
} (31ia"i%
c
`[,>
V6c>1nZ
//停止文件下载 a{4Wg:
public void siteStop() 1v<,nABuJ6
{ @yGK$<R
bStop = true; AZj`o
for(int i=0;i<nStartPos.length;i++) d9j+==S
<
fileSplitterFetch.splitterStop(); /w!!jj^
8fG$><@
bqo+b{i\
} O#}d!}SIp
} b]-~{' +
//负责部分文件的抓取 F!>92H~3G
**FileSplitterFetch.java gI~4A,
*/ G}2DZ=&>'
package NetFox; 5B|&+7dCw
(0wQ [(
?{)s dJe
import java.io.*; i 4}4U
import java.net.*; WxLmzSz{xD
RJYB=y8l
>5O#_?
public class FileSplitterFetch extends Thread { zeC@!,lH
Z(|@C(IL0\
\Zn%r&(
String sURL; //File URL a/4!zT
long nStartPos; //File Snippet Start Position uVSc1MS1
long nEndPos; //File Snippet End Position Bql5=p
int nThreadID; //Thread's ID ]j4Nl?5*x
boolean bDownOver = false; //Downing is over K)D5%?D
boolean bStop = false; //Stop identical _mEW]9Sp
FileAccessI fileAccessI = null; //File Access interface 6~oo.6bA
z1K}] z%
a>05Yxw
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException :
\{>+!`w
{ =7e|e6
this.sURL = sURL; q7z;b A
this.nStartPos = nStart; .wdWs tQ
this.nEndPos = nEnd; !nm[ZrSP
nThreadID = id; 5W Z9z-6
fileAccessI = new FileAccessI(sName,nStartPos);//定位 !,SGKLs.m
} Q;V*M
p{V_}:|=Q
71RG1,
public void run() Y:x,pPyl
{ x)]_]_vX
while(nStartPos < nEndPos && !bStop) ytmFe !
{ ym]12PAU5
5PcN$r"P
MV(Sb:RZ
try{ fwN'5ep
URL url = new URL(sURL); 6Mh;ld@
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F2N)|C<
httpConnection.setRequestProperty("User-Agent","NetFox"); F0D7+-9[
String sProperty = "bytes="+nStartPos+"-"; J{69iQ
httpConnection.setRequestProperty("RANGE",sProperty); Yn~N;VUA
Utility.log(sProperty); [|vE*&:uO
y^ij u(
LH@xr\^
InputStream input = httpConnection.getInputStream(); Z$X[x7e.
//logResponseHead(httpConnection); x;w^&<hQ\
G*`H2-,
K> rZJ[a
byte[] b = new byte[1024]; P3W<a4 ==
int nRead; ^zfO=XN
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) l%f&vOcd
{ ].!^BYNht
nStartPos += fileAccessI.write(b,0,nRead); ytDp
4x<W)
//if(nThreadID == 1) 76} a
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `R\nw)xq
} Miw*L;u@W
+=N!37+G
ask76
e
Utility.log("Thread " + nThreadID + " is over!"); 5PRS|R7
bDownOver = true; NCXr$ES{
//nPos = fileAccessI.write (b,0,nRead); 2w7PwNb*32
} DHnO ,"
catch(Exception e){e.printStackTrace ();} ^&Exa6=*FT
} 6-+q3#e
} N Dqvt$
C4].egVg
"44A#0)B'l
//打印回应的头信息 NI%&Xhn!*>
public void logResponseHead(HttpURLConnection con) hoOT]Bsn
{ M'gL_Xsei
for(int i=1;;i++) T,
z80m}
{ 5gg
Yg$
String header=con.getHeaderFieldKey(i); b@>MA
if(header!=null) 'G#T 6B!
//responseHeaders.put(header,httpConnection.getHeaderField(header)); drM@6$k
Utility.log(header+" : "+con.getHeaderField(header)); {\P`-'C
else k0/S&e,*
break; \-h%z%{R
} MT3TWWtZ:
} f6*6 *=
HtN!Hgpwg
-aV!ZODt
public void splitterStop() A><q-`bw
{ l$\OSG
bStop = true; P{gGvC,
} c97?+Y^
T`7HQf ;
U?[_ d
} p_g#iH!*
[#3*R_#8R
Rt6(y #dF
/* \I[f@D-J
**FileAccess.java Osk'zFiL<
*//文件访问(定位,写) WxrGoo^
package NetFox; g2|qGfl{C
import java.io.*; kgl7l?|O
&|
guPZ
Pc:5*H
public class FileAccessI implements Serializable{ )<+t#5"
d OYEl<!J
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ->rr4xaK C
RandomAccessFile oSavedFile; t!285J8tn
long nPos; kgZiyPcw
YPU*T&~
N+3]C9 2o
public FileAccessI() throws IOException 4owM;y
{ #86=[*Dr
this("",0); >Hd0l L
} >%?kp[
dU"ca|u
iu$:_W_
public FileAccessI(String sName,long nPos) throws IOException |ler\"Eu
{ !Y95e'f.x
oSavedFile = new RandomAccessFile(sName,"rw"); @L/p
this.nPos = nPos; b rpsZU
oSavedFile.seek(nPos); ;&2f {
} &$V&gAN
;J&p17~T9
#=81`u
public synchronized int write(byte[] b,int nStart,int nLen) ]aDU* tk
{ ?\.DG`Zxc
int n = -1; D00v"yp%%
try{ K
K_
oSavedFile.write(b,nStart,nLen); %0MvCm
n = nLen; G oHdhne3
} +k<0:Fi
catch(IOException e) ^fq^s T.$
{ v{44`tR
e.printStackTrace (); AW')*{/(Ii
} Ui43 &B
{S6:LsFfm
*]#(?W.$w
return n; }Tz<fd/
} ^8q(_#w`K
qPvWb1H:
2vLV1v$,q
} L8WYxJ
k
4F=cER6l
/qwl;_Jcf
/* 9[@K4&