/* G}l9 [lE
**SiteFileFetch.java (n>Gi;u(R
*/ 5RWqHPw+
package NetFox; '-N5F
import java.io.*; H? z~V-8
import java.net.*; 2BF455e
O>nMeU
*BM#fe
public class SiteFileFetch extends Thread { L;M@]
s1::\&`za
)i:*r8*~
SiteInfoBean siteInfoBean = null; //文件信息Bean O#[b NLV
long[] nStartPos; //开始位置 | Z7j
s"
long[] nEndPos; //结束位置
*JFkqbf
FileSplitterFetch[] fileSplitterFetch; //子线程对象 B-KMlHe
long nFileLength; //文件长度 n^|xp;] :
boolean bFirst = true; //是否第一次取文件 JCBX?rM/
boolean bStop = false; //停止标志 d6[' [dG
File tmpFile; //文件下载的临时信息 zvq}7,
DataOutputStream output; //输出到文件的输出流 OS<GAA0
6m]?*k1HC
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) w[3a^
public SiteFileFetch(SiteInfoBean bean) throws IOException t&w.Wc X)
{ m(9I+`
siteInfoBean = bean; D{\o*\TN
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (*6 .-Xn
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 2-Q5l*
if(tmpFile.exists ()) zd$?2y8
{ Hu6Qr
bFirst = false; .IY@Q
read_nPos(); ,66(*\xT
} b|Ge#o
else C_q2bI
{ oO3^9?Z
nStartPos = new long[bean.getNSplitter()]; svxjad@l/
nEndPos = new long[bean.getNSplitter()]; V*2*5hx
} {4/*2IRN9h
kjsj~jwvv
owA8hGF
C<9GdN
} +p jB/#4
J> ,w},`
VrfEa d
public void run() ?Q"<AL>Z
{ &XI9%h9|
//获得文件长度 -^`s#0( y^
//分割文件 _](y<O^9yO
//实例FileSplitterFetch b5]<!~Fv:`
//启动FileSplitterFetch线程
T;{}bc&I
//等待子线程返回 L.-qTh^P
try{ AsuugcN*
if(bFirst) $ `\qY ^.(
{ :a2[d1
nFileLength = getFileSize(); G~u$BV'
if(nFileLength == -1) nr&|
{ wexX|B^u
System.err.println("File Length is not known!"); [Rq|;p
} II _CT=
else if(nFileLength == -2) XA>uCJf
{ rB]2qk`/'
System.err.println("File is not access!"); ~rjK*_3/
} Yuf+d-%
else E'mT%@MOM
{ }Ptv[{q]GE
for(int i=0;i<nStartPos.length;i++) tzgaHN
{ %rlqq*
nStartPos = (long)(i*(nFileLength/nStartPos.length)); SQU@JKi;g
} ARnq~E@1
for(int i=0;i<nEndPos.length-1;i++) ^jS1g*nrN
{ u^^jt(j
nEndPos = nStartPos[i+1]; `.pd %\
} nwfu@h0G
nEndPos[nEndPos.length-1] = nFileLength; 0(u}z
} d
{ P$}b
} {0fQE@5@
iI'ib-d
:?z@T[-
//启动子线程 u-jc8W`Zd
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; B+R|fQ
for(int i=0;i<nStartPos.length;i++) Z]2z*XD
{ nB :i G
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Df2$2VU
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^e_uprZWm
nStartPos,nEndPos,i); QALr
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @J6r;4|&
fileSplitterFetch.start(); N|@tP:j
} @sZ' --Y
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T:K}mLSg
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); #fx"tx6
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", uuh._H}-
nEndPos = " + nFileLength); IS[q'Cv*
// fileSplitterFetch[nPos.length-1].start(); "B"ql-K
g%^/^<ei
NgsEEPu?
//等待子线程结束 ,SdxIhL
//int count = 0; 7iv g3*
//是否结束while循环 "9hD4R
boolean breakWhile = false; `e7vSp
fn7?g
#a|r
^%D
while(!bStop) o,J8n;"l
{ V^n=@CZT9C
write_nPos(); %)dp
a
Utility.sleep(500); x+'Ea.^
breakWhile = true; kDQE*o
l$HBYA\Qh
/']`}*d
for(int i=0;i<nStartPos.length;i++) &ns??:\+T
{ 9X#]Lg?b
if(!fileSplitterFetch.bDownOver) [;-;{
*{G
{ L9,GUtK{
breakWhile = false; ?/@XJcm+
break; 7rGp^
} =\i%,YY
} #1}%=nAsi
if(breakWhile) @'hkU$N)
break; 6Qz=g
t%I=
[?,+DY
#\xy,C'Y
//count++; 4v5qK
//if(count>4) SjA'<ZX>TM
// siteStop(); QiVKaBS8
} +yk 0ez
e&[~}f?
w_QWTD0
System.err.println("文件下载结束!"); ^K~=2^sh
} B'vIL '
catch(Exception e){e.printStackTrace ();} <+%y
} 1`Bhis9X8
}+u<w{-7/
,ag*
/
//获得文件长度 R Eo{E
public long getFileSize() { VM^K1
{ C\bJ_vl;'
int nFileLength = -1; mB
bGj3u;
try{ mL;oR4{
URL url = new URL(siteInfoBean.getSSiteURL()); ,]9p&xu
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4/S3hH
httpConnection.setRequestProperty("User-Agent","NetFox"); 7g o Rj
u-.nR}DM_
SD:Bw0gzrI
int responseCode=httpConnection.getResponseCode(); .K#'
Fec
if(responseCode>=400)
2Mw`
{ hHOx ]
processErrorCode(responseCode); *'{9(Oj
return -2; //-2 represent access is error aqi]5,
} G-vkkNj%e
+^rt48${ y
(Nf!E[}Z
String sHeader; wYv++<
z
%(\et%[]
K}whqe]j
for(int i=1;;i++) Rp_ }_hL0
{ 0Uk;&a0s
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 8f'r_,"
//Utility.log(in.readLine()); Z{F^qwne
sHeader=httpConnection.getHeaderFieldKey(i); CzDg?w b
if(sHeader!=null) 0NvicZ7VR
{ Z)u_2e
if(sHeader.equals("Content-Length")) +& M>J|
{ x;STt3M~
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); !0KNA1w,
break; =C)2DW J1
} e>uq/|.!
} Wh%@
else ojIGfQV
break; "%rU1/@#
} J~ z00p`E
} 69odE+-X.
catch(IOException e){e.printStackTrace ();} V4,\vgGu
catch(Exception e){e.printStackTrace ();}
3
}#rg
IFF1wfC
A5ckosYyNA
Utility.log(nFileLength); /|v
b)J
a72L%oJ
m'ZxmsFo
return nFileLength; ehMpo BL
} b0N7[M1Xl
h?->A#
G*zhy!P
//保存下载信息(文件指针位置) 2jP(D%n
private void write_nPos() IG:CWPU
{ qUQP.4Z9 5
try{ '|&?$g(\h
output = new DataOutputStream(new FileOutputStream(tmpFile)); r|953e
output.writeInt(nStartPos.length);
SmAF+d
for(int i=0;i<nStartPos.length;i++) _2}/rwVg
{ _znn `_N:v
// output.writeLong(nPos); i$!K{H1{9
output.writeLong(fileSplitterFetch.nStartPos); U[ogtfv`m
output.writeLong(fileSplitterFetch.nEndPos); qvJQbo[.9P
} Y)AHM0;g
output.close(); > IZ$ .-
} `n`HwDo;i
catch(IOException e){e.printStackTrace ();} ,!^;<UR:
catch(Exception e){e.printStackTrace ();} -e+im(2D=
} {]7lh#M
P@Pe5H"o
{^R"V ,)
//读取保存的下载信息(文件指针位置) Gs*X> D
private void read_nPos() Z/e[$xT <
{ `TDS4Y
try{ _G^ 4KwYp
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); -x>2Wb~%
int nCount = input.readInt(); lt0byn$vz
nStartPos = new long[nCount]; LdX'V]ITh
nEndPos = new long[nCount]; d}^hZ8k|
for(int i=0;i<nStartPos.length;i++) nc#} \
{ M&rbXi.
nStartPos = input.readLong(); lBG"COu
nEndPos = input.readLong(); CG!9{&F
} @@6c{r^P
input.close(); |q\Rvt$d
} yV)9KGV+:
catch(IOException e){e.printStackTrace ();} z)
"(&__
catch(Exception e){e.printStackTrace ();} [XNDYaF8
} #b;TjnC5{$
9_%??@^>
. H8 6f !=
private void processErrorCode(int nErrorCode) (+bt{Ma
{ hx}X=7w
System.err.println("Error Code : " + nErrorCode); ,#(k|Zztc
} Tnnj8I1v
Y0o{@)Y:
eqU y>
//停止文件下载 7<93n`byM
public void siteStop() o-<.8Z}>at
{ :CXm@yF~4=
bStop = true; f(c#1AJE53
for(int i=0;i<nStartPos.length;i++) mqQC`Aqx:
fileSplitterFetch.splitterStop(); @dhnpR:L
6J3<k(#:
'u:J
"
} 8+&Da
} D[K!xq
//负责部分文件的抓取 edfb7prfTl
**FileSplitterFetch.java mfgUf
*/ lnrs4s Km
package NetFox; =n_>7@9l
&^F'ME
-EWC3,3
import java.io.*; 4FJA+
import java.net.*; )H*BTfmt
G;^,T/q47
)p
8P\Rl
public class FileSplitterFetch extends Thread { ]l=iKl
F%:o6mT
6LzN#g
String sURL; //File URL g_(O7
long nStartPos; //File Snippet Start Position w+{ o^O
long nEndPos; //File Snippet End Position C ?aa)H
int nThreadID; //Thread's ID #>">fs]
boolean bDownOver = false; //Downing is over N/8B@}@n
boolean bStop = false; //Stop identical Oa'T$'
FileAccessI fileAccessI = null; //File Access interface f2i9UZ$=e!
eOUEhpE
PED5>90
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException X[1w(d U[
{ ##yH*{/&
this.sURL = sURL; zQsW*)L
this.nStartPos = nStart; RnUud\T/
this.nEndPos = nEnd; hJ*#t<.<P;
nThreadID = id; :eR\0cn
fileAccessI = new FileAccessI(sName,nStartPos);//定位 eY'RDQa
} 'F^"+Xi
#UqE%g`J
2;ac&j1
public void run() &MJ`rj[%
{ 1,pPLc(
while(nStartPos < nEndPos && !bStop) VJ-To}
{ cwI3ANV
bMN]co
:}ZY*ind
try{ ~Z$Ro/;l
URL url = new URL(sURL); _16r8r$V
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *XluVochrb
httpConnection.setRequestProperty("User-Agent","NetFox"); NV;T*I8O
String sProperty = "bytes="+nStartPos+"-"; L=kETJ:g
httpConnection.setRequestProperty("RANGE",sProperty); Q6%Pp_$k
Utility.log(sProperty); W,[iRmxn
uP2Wy3`V
wI#R\v8(`n
InputStream input = httpConnection.getInputStream(); !+3nlG4cw
//logResponseHead(httpConnection); *30T$_PiX|
?2Sm
f
7y=1\KW(
byte[] b = new byte[1024]; CjmF2[|
int nRead; :2AlvjvjZ
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Qsr+f~"W
{ (bGk=q=M
nStartPos += fileAccessI.write(b,0,nRead); #c`/ f6z
//if(nThreadID == 1) L?b;TjLe
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); x{,W<oXg
} FtybF
-}"nb-RR\
HXQ
}B$V
Utility.log("Thread " + nThreadID + " is over!"); ffem7eQ
bDownOver = true; [g$IN/o%
//nPos = fileAccessI.write (b,0,nRead); *4[P$k$7
} V_jGL<X|
catch(Exception e){e.printStackTrace ();} SnGXEQ
} 6MelN^\[7
} T&]IPOH9
E&> 2=$~
1cd3m
//打印回应的头信息 FdS'0#$
public void logResponseHead(HttpURLConnection con) jluv}*If
{ O2oF\E_6
for(int i=1;;i++) Twpk@2=l
{ '$q3 Ze
String header=con.getHeaderFieldKey(i); q
7hoI]
if(header!=null) u Uh6/=y
//responseHeaders.put(header,httpConnection.getHeaderField(header)); K,@} 'N
Utility.log(header+" : "+con.getHeaderField(header)); C@@PLsMg
else D1Q]Z63,
break; ]|B_3*A
} p}|<EL}Z9
} 9oj0X>| 1
nSq$,tk(
Bh()?{q
public void splitterStop() G Cp90
{ d"}lh:L9
bStop = true; gyOAvx
} <P-AlHYV-
a!;CY1>
ez[$;>
} mN'sJ1L-
zz-X5PFn
8n/[oDc]
/* mJME1#j$/|
**FileAccess.java 7}vx]p2
*//文件访问(定位,写) =T#?:J#a
package NetFox; \1#~]1~
s
import java.io.*; FES0lw{G#
r-&* `Jh
"QM2YJ55m`
public class FileAccessI implements Serializable{ lk4$c1ao2@
14p{V}f3
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Mqm9i
RandomAccessFile oSavedFile; Y$FhV~m
long nPos; L^L.;1
>,nK
N7Kkz
/
public FileAccessI() throws IOException E=qfI>2U&
{ /X?%K't2r
this("",0); ^*WO*f>y
} 5[H1nC
@C
py9`q7F
>&)|fV&4
public FileAccessI(String sName,long nPos) throws IOException K(_8oB784
{ k(_^Lq f-
oSavedFile = new RandomAccessFile(sName,"rw"); }XRRM:B|)(
this.nPos = nPos; &}FWpo!
oSavedFile.seek(nPos); 0B(Y{*QB
} CZ,2Rq
Dos';9Uq
~oeX0l>F
public synchronized int write(byte[] b,int nStart,int nLen) 6tup^Rlo;$
{ #x(3>}
int n = -1; ]9hhAT44
try{ /rv=mlpRL
oSavedFile.write(b,nStart,nLen); 6#kK
n = nLen; K]ds2Kp&
} Sh 7ob2
catch(IOException e) T,v5cc:nO
{ G[Jz(/yNH
e.printStackTrace (); TGI`}#
} j15t8du&O
36yIfC,
FK;2u$:
return n; !FeNx*31i
} q=+wQ[a<
HLl"=m1/>
=_`cY^ib+
} 8lF:70wia
^\3z$ntF
P(i
E"KH;
/* (+;%zh-
**SiteInfoBean.java EP8R[Q0_"
*/ >!#or- C
package NetFox; Ej'N!d.
6KKQ)DNu_
]?~[!&h
public class SiteInfoBean { "qw.{{:tf
#;<dtw
r[AqA
private String sSiteURL; //Site's URL u7bji>j
private String sFilePath; //Saved File's Path QE`u~
private String sFileName; //Saved File's Name 3 /LW6W|
private int nSplitter; //Count of Splited Downloading File 6?= ^8
tflUy\H>
4_o+gG%HaM
public SiteInfoBean() sKDL=c;?j
{//nSplitter的缺省值为5 JO\KTWtjO
//default value of nSplitter is 5 @;>Xy!G
this("","","",5); gdG#;T'
} 2yA+zJ
46B
8<Ex`
N-}|!pqb
public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) t&rr;W]
{ i&JI"Dd7
sSiteURL= sURL; z=DK(b;$z
sFilePath = sPath; /
2h6
sFileName = sName; L$= a,$
this.nSplitter = nSpiltter; bdvVPjGc&
OCI{)r<O2m
0Y/k/)Ul]
} ou[Wz{
NucLf6
O\^D
6\ v
public String getSSiteURL() x!A5j
$k0
{ ;`FR1KIg
return sSiteURL; n$3w=9EX*
} 8PvO_Gz5
u1/q8'RW
\D}$foHg
public void setSSiteURL(String value) 4
zipgw
{ n2&M?MGX
sSiteURL = value;
A}n7A
} ?f=7F
%
"IJcKoB
?)FY7[x.
public String getSFilePath() LH>h]OTQF
{ !24g_R[3"
return sFilePath; WFMQ;
} A]m_&A#
M[KYt"v
[I%'\CI;
public void setSFilePath(String value) HG[gJ7
{ $kn"S>jV
sFilePath = value; l6HT}x7OiH
} bk4G+wGw
~)]n67Or~
H]>7IhJ
public String getSFileName() e[t1V/ah
{ P!~B07y
return sFileName; jQ5FvuNOy
} #5_pE1
mJS-x-@
+(vL~
public void setSFileName(String value) KPI[{T\`ZM
{ >2;KPV0H
sFileName = value; G>W:3y
} `-<m#HF:)d
Bt"*a=t;
]`eJSk.
public int getNSplitter() N"/be
{ =N{-lyr)
return nSplitter; "gq_^&
} L&qY709
T2i\S9X
[`=:uUf3
public void setNSplitter(int nCount) $q$\
{ }3y Q*<
nSplitter = nCount; Ui;PmwQc&
} ,\E5et4
} ,4kipJ!,yK
v{TISgZ
o@:u:n+.
/* dF0:'y
**Utility.java Kw,ln<)2
*/ }#9 |au`
package NetFox; 3Tr}t.mt
? p^ ':@=
Y# ?M%I%j
public class Utility { v*EErQML8b
_@ @"'
Wx-rW
public Utility() ,ikn%l#cm
{ /BfCh(B
w0$l3^}z
`jH 0FJQ
} ({p@Ay
DwH=ln=
//线程睡眠 g;<_GL
public static void sleep(int nSecond) J|[`8 *8
{ Ov8{ny
try{ px.]m-
Thread.sleep(nSecond); aFwfF^\(|,
} fO$~jxR.
catch(Exception e) KiG/XnS
{ [[d@P%X&
e.printStackTrace (); qVmG"et'J
} iC\t@BVS
} 2[$` ]{U
<