/* e,VF;Br
**SiteFileFetch.java <n 06(9BF
*/ Btm_S\1
package NetFox; DKu$u ]Z
import java.io.*; 'QxJU$
import java.net.*; 7U_ob"`JV
fn=A_
i
,LN^Zx*
public class SiteFileFetch extends Thread { VQ|{Q}
d+,!p8Q
;nP(S`'
SiteInfoBean siteInfoBean = null; //文件信息Bean "mQcc}8
long[] nStartPos; //开始位置 <<CWN(hQWO
long[] nEndPos; //结束位置 j&_>_*.y
FileSplitterFetch[] fileSplitterFetch; //子线程对象 } `Ya;
long nFileLength; //文件长度 rU&Y/
boolean bFirst = true; //是否第一次取文件 =CRptk6tS
boolean bStop = false; //停止标志 pR93T+X
File tmpFile; //文件下载的临时信息 Ao$k[#px
DataOutputStream output; //输出到文件的输出流 8K?}!$fz
ThgJ
'
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) G^#>HE|
public SiteFileFetch(SiteInfoBean bean) throws IOException ?z#*eoPr
{ ;"x+V gS'
siteInfoBean = bean; E
V)H>kM
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); l^nvwm`f#:
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); mV`R'*1UC
if(tmpFile.exists ()) H"8B4~*7H
{ tEvDAI} 5
bFirst = false; 7~XA92
read_nPos(); vm_]X{80;
} W/xPVmnV
else
-43>?m/a
{ B I)@n:p
nStartPos = new long[bean.getNSplitter()]; qvB{vU
nEndPos = new long[bean.getNSplitter()]; |cY,@X,X6
} 8| =C/k
(w)%2vZ^
1:](=%oM&k
t^"8M6BqC;
} n|&=6hiI
#eOHe4Vt
anbw\yh8
public void run() \f?
K74
{ `|?<KF164
//获得文件长度 <I34@;R c
//分割文件 U(y8nI]
//实例FileSplitterFetch W j^@Zq#
//启动FileSplitterFetch线程 /~w*)e)
//等待子线程返回 QrK%DN
try{ B
os`+Y
if(bFirst) CU\gx*=E
{ {%u^O/M
nFileLength = getFileSize(); j67ppt
if(nFileLength == -1) x>Q% hl
{ 'Xj^cX
System.err.println("File Length is not known!"); d=qVIpZ
} V&:x+swt
else if(nFileLength == -2) /qy6YF8;y
{ <i</pA
System.err.println("File is not access!"); !>> A@3
} %K|f,w=m
else $.4A?,d
{ L<@*6QH
for(int i=0;i<nStartPos.length;i++) e[u}Vf
{ bKM*4M=k
nStartPos = (long)(i*(nFileLength/nStartPos.length)); C0N}B1-MU
} iSezrN
for(int i=0;i<nEndPos.length-1;i++) d;Y Kw1
{ Slg*[r#
nEndPos = nStartPos[i+1]; \^"Vqx
} F<g&t|@
nEndPos[nEndPos.length-1] = nFileLength; 6c-3+,Y"#
} ,4t6Cq!
} s0;a j<J
?#
FYF\P
`i
cs2po
//启动子线程 $Bz};@
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; XH~(=^/_
for(int i=0;i<nStartPos.length;i++) 4bA^Gq
{ /7#e
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T^|k`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), w=;>
nStartPos,nEndPos,i); "NLuAB.P
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Hq::F?
fileSplitterFetch.start(); .(q'7Q Z/
} dV38-IfGkl
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), HP]5"ziA
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); OS@uGp=
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", iZy>V$Aq
nEndPos = " + nFileLength); y4h
=e~
// fileSplitterFetch[nPos.length-1].start(); $rcv@-l
"ymR8y'
5s3QN{h8
//等待子线程结束 4%~*}
//int count = 0; >4luZnWMI
//是否结束while循环 ;UTM9.o[
boolean breakWhile = false; Q&r.wV|
-fFtHw:kHh
C_Q3^mLx
while(!bStop) A_S7z*T
{ JH]S'5X8K
write_nPos(); 07:V[@'
Utility.sleep(500); ~M^[
breakWhile = true; L5x;#\#p
WyatHC
E8r6P:5d`
for(int i=0;i<nStartPos.length;i++) N
Nk
{ *Igb3xK%
if(!fileSplitterFetch.bDownOver) )m;*d7l~p
{ JK<[]>O
breakWhile = false; 4RVqfD
break; jdJTOT
} 2kVZlt'y
} 8b'@_s!_
if(breakWhile) !38KHq^|&
break; UU>+ b:
tNr'@ls
cdL]s^z
//count++; 5e,u*J]
//if(count>4) >eG<N@13p
// siteStop(); v2rO>NY4
} $aJ6i7C,j}
<{k{Coy
3f^Pr
System.err.println("文件下载结束!"); Vu.=,G
} vq(#Ih2
catch(Exception e){e.printStackTrace ();} L#K`F8Wi=
} vx($o9
&j1-Ouy
*
rlVE
//获得文件长度 ZtO$kK%q;
public long getFileSize() 4xg)e`
*U
{ pTq DPU
int nFileLength = -1; xAd@.^
try{ J/e]
URL url = new URL(siteInfoBean.getSSiteURL()); Wx]Xa]-
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "!zJQl@
httpConnection.setRequestProperty("User-Agent","NetFox"); [yN+(^i
./XX
0ex.~S_Oj4
int responseCode=httpConnection.getResponseCode(); 1!(lpp
if(responseCode>=400) YOLzCnI4
{ H@@ 4n%MK
processErrorCode(responseCode); <9X@\uvU.<
return -2; //-2 represent access is error yR|2><A
} uFSU|SDd.
M]6+s`?r
\78^ O
String sHeader; _x(hlHFk
082iEG
bC:sd2s
for(int i=1;;i++) RKzty=j4
{ [pTdeg;QE
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); k)7i^1U
//Utility.log(in.readLine()); 7oF3^K'S
sHeader=httpConnection.getHeaderFieldKey(i); rmA?Xlh\
if(sHeader!=null) d*{Cv2A.
{ l,h`YIy
if(sHeader.equals("Content-Length")) W>a}g[Ad
{ }~zDcj_
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); )/'WboL
break; n-8/CBEH(
} %z@ Z^Jv
} N,qo/At}R[
else }_KzF~
break;
}p6]az3
} o%~fJx:]y
} `.pEI q^
catch(IOException e){e.printStackTrace ();} a~jb%i_
catch(Exception e){e.printStackTrace ();} )M0(vog
Q/?`);
&v .S_Ym
Utility.log(nFileLength); L>IP!.J]?
w;ZT-Fti
G(wK(P0j
return nFileLength; BH {z]a
} I ==)a6^
'qT;Eht5
5&Yt=)c\
//保存下载信息(文件指针位置) zs]ubJC@
private void write_nPos() sc+%v1Y#}
{ J@/4CSCR]
try{ xwZ1Q,'C
output = new DataOutputStream(new FileOutputStream(tmpFile)); \0 h>!u
output.writeInt(nStartPos.length); 18NnXqe-m
for(int i=0;i<nStartPos.length;i++) ;6PU
{ VI4mEq,V
// output.writeLong(nPos); c>D~MCNxg
output.writeLong(fileSplitterFetch.nStartPos); u=InE|SH
output.writeLong(fileSplitterFetch.nEndPos); Jkj7ty.J
} kl:/PM^
output.close(); |
CFG<]
} y%%VJ}'X!
catch(IOException e){e.printStackTrace ();} >gzM-d
catch(Exception e){e.printStackTrace ();}
n(Nu
} :1 qLRr
sG#O s
?1\I/'E9
//读取保存的下载信息(文件指针位置) wicsf<]
private void read_nPos() #Q7:Mu+
{ L^t%p1R
try{ .B~yI3D`M
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); m]U
int nCount = input.readInt(); KdozB!\
nStartPos = new long[nCount]; aPxSC>p
nEndPos = new long[nCount]; xwsl$Rj
for(int i=0;i<nStartPos.length;i++) agwbjkU/
{ vaF1e:(
nStartPos = input.readLong(); fpQFNV
nEndPos = input.readLong(); wT!?.Y)aj
} (v?@evQ
input.close(); E va&/o?P|
} aB~k8]q.
catch(IOException e){e.printStackTrace ();} m,+PYq
catch(Exception e){e.printStackTrace ();} 0o$RvxJ
} Y<W9LF
ktqFgU#rT
JmCHwyUK?
private void processErrorCode(int nErrorCode) 16Ka>=G
{ Fu{VO~w
System.err.println("Error Code : " + nErrorCode); $rj:K)P
} 2i6=g<
-'miM ~kG[
{'zS8
//停止文件下载 19GF%+L
,
public void siteStop() r&R~a9+)
{ )R
`d x
bStop = true; UUWRC1EtI
for(int i=0;i<nStartPos.length;i++) >b\|%=(x!*
fileSplitterFetch.splitterStop(); v0)
%S
0);5cbV7i
-<x%
} ,?m@Ko7Y
} YC%xW*
//负责部分文件的抓取 YvG$2F |_)
**FileSplitterFetch.java &J/!D#
*/ Y~*p27@fR
package NetFox; oO[eer_S-
Hz,Gn9:p
GtmoFSZ
import java.io.*; Y{j~;G@Wl
import java.net.*; `/m]K~~
g5 *E\T%8
dY$nw
public class FileSplitterFetch extends Thread { V#,|#2otZ
, Zie2I?q
*j83E[(]
String sURL; //File URL :1f,%Z$,q
long nStartPos; //File Snippet Start Position 4IZAJqw(*
long nEndPos; //File Snippet End Position _s#J\!F
int nThreadID; //Thread's ID WVQHb3Pe0
boolean bDownOver = false; //Downing is over 7n .A QII
boolean bStop = false; //Stop identical C\"C12n{
FileAccessI fileAccessI = null; //File Access interface %6fnL~A
n,2 p)#?
:f Rta[
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException nl2Lqu1
{ t5l<Lm)
this.sURL = sURL; #"A`:bjG
this.nStartPos = nStart; 5);"()g32
this.nEndPos = nEnd; .mrv"k\<
nThreadID = id; 1H">Rb30@
fileAccessI = new FileAccessI(sName,nStartPos);//定位 P2ySjgd
} u=@zYA(
]2"UR_x
#QlxEs#%
public void run() 6E_~8oEl
{ am5;B`}q
while(nStartPos < nEndPos && !bStop) R7:u 8-dU1
{ i885T'
&0*l:uw
^0_ >
try{ p\~ a=
URL url = new URL(sURL); A#q.)8
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); lu>G=uCJ
httpConnection.setRequestProperty("User-Agent","NetFox"); s +S6'g--
String sProperty = "bytes="+nStartPos+"-"; W)Y-^i5
httpConnection.setRequestProperty("RANGE",sProperty); -+qg
Utility.log(sProperty); BuM#&]s
0*P-/)o x
FDiDHOR
InputStream input = httpConnection.getInputStream(); ,^
-%<
//logResponseHead(httpConnection); u$nmnd`g
pT+OPOSR
)qX.!&|I
byte[] b = new byte[1024]; lgt&kdc%o
int nRead; &9v8
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) !N\_D
{ yWc%z6dXC
nStartPos += fileAccessI.write(b,0,nRead); Pt-mLINvG
//if(nThreadID == 1) -k>k<bDAI
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); r.LO j6c
} CPsl/.$tC
nmL|v
-*&aE~Cs
Utility.log("Thread " + nThreadID + " is over!"); M4?>x[Pw
bDownOver = true; nRq[il0 `i
//nPos = fileAccessI.write (b,0,nRead); Xq"9TYf$
} V=1yg24B<
catch(Exception e){e.printStackTrace ();} Y -BZV |
} K vPLA{
} H^B,b!5i
xV`)?hEXFh
0:`YY8j1k
//打印回应的头信息 ~PpU'[
public void logResponseHead(HttpURLConnection con) !:vQg+S
{ b+AxTe("
for(int i=1;;i++) gi:M=
{ Eos;7$u[
String header=con.getHeaderFieldKey(i);
iH>JR[A
if(header!=null) 8PeVHpZ
//responseHeaders.put(header,httpConnection.getHeaderField(header)); g-x;a0MQx
Utility.log(header+" : "+con.getHeaderField(header)); 8j]QnH0&
else C2iOF /4
break; m=pH G
} RAEN
&M
} &QHmo*
TgRG6?#^l
Ak`?,*LM
public void splitterStop() \8{Tj54NA
{ 2l+'p[b0>
bStop = true; 02^\np
} Zia6m[ ^Q
ex|)3|J
a(JtGjTf&
} y
</i1qM
CpgaQG^
Ym]rG
4
/* ! "08TCc<
**FileAccess.java guy!/zQ>A
*//文件访问(定位,写) @[/!e`]+
package NetFox; %<q"&]e,
import java.io.*; )5<dmK@
Vz5<Gr
:w4 H$+j
public class FileAccessI implements Serializable{ ,:81DA
$Ixd;`l*
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 da8
R.1o
RandomAccessFile oSavedFile; ~Ty6]A
long nPos; 4g.S!-H@R
%z
@T /
"VsS-b^ P
public FileAccessI() throws IOException HqOnZ>D
{ Oh}@c~7;
this("",0); T(q Hi?Y
} (ke<^sv7!
Uzn
eLyIQo W
public FileAccessI(String sName,long nPos) throws IOException wDh&S{N
{ w6B`_Z'f
oSavedFile = new RandomAccessFile(sName,"rw"); iVqF]2>
this.nPos = nPos; Y k"yup@3
oSavedFile.seek(nPos); \\"CgH-
} .=
8Es#
!\&4,l(
H/G;hk
public synchronized int write(byte[] b,int nStart,int nLen) 3bugVJ93
{ )4+uM'2%
int n = -1; J2`OJsMwWe
try{ O_SM! !,
oSavedFile.write(b,nStart,nLen); SYOU&*
n = nLen; 8wS9%+
} f
K4M:_u
catch(IOException e) WN#dR~>
{ Hp
fTuydU
e.printStackTrace (); =0U"07%}
} |@ZyD$?
jm|zn
Rn whkb&&
return n; y+VRD
} k#@)gL
%bnjK#o"Q
;u%4K$
} 3'`X_C|d53
-g vS3`lX
NQvT4.*
/* 495(V(+5
**SiteInfoBean.java h"N#/zQ
*/ Qnp.Na[JV
package NetFox; piiO5fK|
_lk5\bu
|VoYFoiQ
public class SiteInfoBean { =u&NdMy
W!Rr_'yFe)
,H su;I~
private String sSiteURL; //Site's URL ~U4;YlQP
private String sFilePath; //Saved File's Path 0k|/]zfb
private String sFileName; //Saved File's Name *;(GL
private int nSplitter; //Count of Splited Downloading File v\COl*
xm<sH!,j
uFi[50
public SiteInfoBean() rg+3pX\{
{//nSplitter的缺省值为5 7o M]qLF
//default value of nSplitter is 5 :&D$Q
4
this("","","",5); o Bp.|8-
} 5 s2/YG=
>5]w\^QN9_
"[]J[!}x
public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) L2y{\<JC"
{ mZ
t:
sSiteURL= sURL; C;!h4l7L
sFilePath = sPath; P~*v}A
sFileName = sName; <Xj
,>2m;
this.nSplitter = nSpiltter; Aq P\g k
l_*:StyR+
X`n*M]
} g.O? 1bebe
cE]#23
GEf[k OQ
public String getSSiteURL() 04<T2)QgK
{ D61e
return sSiteURL; }=."X8zOI8
} jLf8 7
15~+Ga4
r;aP`MVO<
public void setSSiteURL(String value) &@xeWB
{ vui{["
sSiteURL = value; wZUR
} 3H47 vm(`
[ w1"
\8X8NCM
public String getSFilePath() (vf5qF^
{ 1]XIF?_Dm
return sFilePath; j2|!h%{nI
} -`ykVHgg
*C?x\.\C
V.274e
public void setSFilePath(String value) 5Bc)QKh`l|
{ =!Y{Mz
sFilePath = value; /%GMbO_
} N[,/VCW
pV))g
e\
4.mbW
public String getSFileName() C(*)7|
m
{ A,s .<TG
return sFileName; tlFc+3
} IsCJdgG
9^c"HyR
{VE$i2nC8
public void setSFileName(String value) 8m"5J-uIi
{ P%Ux-0&
sFileName = value; *8CE0;p'k
} Q,`Y
6.'+y1yS)
|]H2a;vUJR
public int getNSplitter() Wh>Y_ k
{ 9qQFIw~S
return nSplitter; @V-CG!
} &_E*]Sj\
#0 WO~wL
cBA2;5E
public void setNSplitter(int nCount) [}_ar
{ ZvO:!u0+"
nSplitter = nCount; uQ.VW/>
} BPd]L=,/
} MY["
zv
Fk,3th
#B)`dA0a
/* tgYIM`f
**Utility.java 93(
*/ O_PC/=m1@
package NetFox; $mOK|=tI_
g%<7Px[W
{:enoV"
public class Utility { 6A/|XwfE/v
K~WwV8c9;
Ja#idF[V
public Utility() Z
[5HI;
{ fwQ%mU+
)V}u1C-N
#UJ@P Dwil
} Ve8`5
[P{Xg:0
//线程睡眠 4"j5@bppJ
public static void sleep(int nSecond) 8`qw1dF
{ ()>\D
try{ EX&y
!
Thread.sleep(nSecond); rd1&?X
} o#wF/ I
catch(Exception e) I$wP`gQh
{ _bks*.9}3b
e.printStackTrace (); Gf'V68,l$
} xI~\15PhG
} =4MiV]
FM7N|]
m
//日志 "=f*Lk@[
public static void log(String sMsg) D_9/|:N:
{ M=N`&m