/* .7
j#F
**SiteFileFetch.java i;~.kgtq4
*/ &&$*MHJ
package NetFox; !lg_zAV
import java.io.*; l@w\
Vxr
import java.net.*; Tr>_R%b K
-}xK>
["
7>zUT0SS
public class SiteFileFetch extends Thread { j@nK6`d+1
$27OrXQ|
jXmY8||w
SiteInfoBean siteInfoBean = null; //文件信息Bean q}jh>`d
long[] nStartPos; //开始位置 Edc3YSg%;
long[] nEndPos; //结束位置 hyPS 6Y'1
FileSplitterFetch[] fileSplitterFetch; //子线程对象 H;a) `R3
long nFileLength; //文件长度 ;xh.95BP`
boolean bFirst = true; //是否第一次取文件 B:i$
boolean bStop = false; //停止标志 n=DmdQ}
File tmpFile; //文件下载的临时信息 Ot=nKdP}D
DataOutputStream output; //输出到文件的输出流 {gEz;:!):
Zd)LVc[
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Q>X1 :Zn3
public SiteFileFetch(SiteInfoBean bean) throws IOException AWFq5YMSI
{ I^LU*A=
siteInfoBean = bean; V`/c#y||
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); D)4#AI
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); n|.eL8lX.<
if(tmpFile.exists ()) :Id8N~g
{ [KGj70|~
bFirst = false; \{*`-Pv
read_nPos(); g|^U?|;p
} TRgj`FG
else lM#/F\
{ XpKeN2=p
nStartPos = new long[bean.getNSplitter()]; 3^H-,b0^
nEndPos = new long[bean.getNSplitter()];
qOD^P
} w=nS*Qy2
]GHw~s?
H_8PK$c;
WuWOC6^
} xG4 C 6s
2GigeN|1N
:Eg4^,QX
public void run() [70 _uq
{ 5<KBMCn
//获得文件长度 b
H5lLcdf
//分割文件 B|^=2 >8s
//实例FileSplitterFetch P"Q6 wdm
//启动FileSplitterFetch线程 dZkKAK:v
//等待子线程返回 1'&HmBfcb
try{ B&!>& Rbx
if(bFirst) ~t*_
{ _Nz?fJ:$@
nFileLength = getFileSize(); Z~w?Qm:/
if(nFileLength == -1) b,ZBol|X
{ %dd B$(
System.err.println("File Length is not known!"); 1,P2}mYv
} UBnHtsM
else if(nFileLength == -2) \,nhGh
{ iH)vLD
System.err.println("File is not access!"); >Wd=+$!I
} *g'%5i1ed
else (L1O;~$
{ /_(l:q^
for(int i=0;i<nStartPos.length;i++) =td(}3|D
Y
{ BG-nf1K(
nStartPos = (long)(i*(nFileLength/nStartPos.length)); !_>/ r
} }*P;kV
for(int i=0;i<nEndPos.length-1;i++) ucLh|}jJ5
{ h=au`o&CG
nEndPos = nStartPos[i+1]; SrdCLT8
} "5sUE!)f
nEndPos[nEndPos.length-1] = nFileLength; 44B9JA7u
} [--] ?Dr
}
@[$q1Nm
n#P?JyGm1g
TuwSJS7
//启动子线程 ZQ\O|
n8
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 5Yk|
for(int i=0;i<nStartPos.length;i++) GXTjK!
{ ,/p.!+
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )q{e L$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), v~!_DD
au
nStartPos,nEndPos,i); CfOhk
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <HW2W"Go\
fileSplitterFetch.start(); 8fWIZ
} uF*tlaV6
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :G<~x8]k0
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); TDR#'i
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", D0gz
((
nEndPos = " + nFileLength); do< N+iK
// fileSplitterFetch[nPos.length-1].start(); Jj1lAg0
S:
g 2V
&:C(,`~
//等待子线程结束 6se[>'5
//int count = 0; G>2: WQ/
//是否结束while循环 'Hq#9?<2M
boolean breakWhile = false; tF!C']
Oh=Kl3xs
c<)O#i@3/
while(!bStop) C !Lu`y
{ w^ 8^0i-
write_nPos(); f1Gyl
Utility.sleep(500); gEq";B%?
breakWhile = true; l2
#^}-
>lK:~~1
GtqA@&5&
for(int i=0;i<nStartPos.length;i++) c#[d7t8ONe
{ a&n}pnEn)
if(!fileSplitterFetch.bDownOver) hya
$Vp
{ `=W#owAF
breakWhile = false; [k,FJ5X
break; d6e]aO=g
} LaIH3!M3
} GmN~e*x>p
if(breakWhile) n#5 pd;!n
break; "4QD\k5
`uqsYY`V
HO8x:2m
//count++; kkV*#IZ
//if(count>4) K./L'Me
// siteStop(); J35[GZ';D
} ;MKfssG
YksJ$yH^
>56;M7b(K
System.err.println("文件下载结束!"); ]K>x:vMKH
} 4
eP-yi
catch(Exception e){e.printStackTrace ();} u*!/J R
} p( [FZ
LsV?b*^(p
R%%h=]
//获得文件长度 n0@ \x=9
public long getFileSize() + gP 4MP
{ @1peJJ{
int nFileLength = -1; [JX=<a)U
try{ mr#XN&e
URL url = new URL(siteInfoBean.getSSiteURL()); zJtB?<
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~VO?P fxZ
httpConnection.setRequestProperty("User-Agent","NetFox"); :e TzjW=
'ul~f$
V
(L8z<id<z
int responseCode=httpConnection.getResponseCode(); O(44Dy@2
if(responseCode>=400) JclG*/Wjg4
{ ]`n6H[6O
processErrorCode(responseCode); 8` f=Eh
return -2; //-2 represent access is error }?z_sNrDk
} 2/G`ej!*
\}})U#
vZ2/>}!Z=
String sHeader; A/U, |
Z^vcODeC$
iN@+,]Yjl
for(int i=1;;i++) L+$9 ,<'[
{ T! fF1cpF\
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); gJI(d6
//Utility.log(in.readLine()); CXiSin
sHeader=httpConnection.getHeaderFieldKey(i); 9^1.nE(R&
if(sHeader!=null) j.y8H
{ E6y ?DXWH
if(sHeader.equals("Content-Length")) }Dc?Emb
{ ;AK@Kb
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }c0EGoU}?
break; d+:pZ
} n42XqR
} "G
@(AE(
else ;b1*2-
break; !8i[.EAT
} Sg}]5Mn`
} aJ}Cqk
catch(IOException e){e.printStackTrace ();} h;8^vB y
catch(Exception e){e.printStackTrace ();} )o@-h85";
}CXL\,;
_^pg!j[Fy}
Utility.log(nFileLength); #i~2C@]
hA_Y@&=W
By-A1|4Cp`
return nFileLength; !9JK95;
} nd1%txIsr
Oe*+pReSD
2OJ=Xb1
//保存下载信息(文件指针位置) 8g CQ0w<
private void write_nPos() P~"`Og+
{ $s-HG[lX[
try{ \+B+M 7
output = new DataOutputStream(new FileOutputStream(tmpFile)); G_UxR9Qo
output.writeInt(nStartPos.length); C 9:5c@G
for(int i=0;i<nStartPos.length;i++) e^ygQ<6%
{ s9-aPcA
// output.writeLong(nPos); F)g.xQ
output.writeLong(fileSplitterFetch.nStartPos); 4TW>BA
output.writeLong(fileSplitterFetch.nEndPos); AmmUoS\
} g` QbJ61a
output.close(); K1K3s<y+
} OCVF+D :
catch(IOException e){e.printStackTrace ();} .U:D uyT
catch(Exception e){e.printStackTrace ();} [J.-gN$X@
} zS##YR
m;"i4!
=9ISsI\Y6
//读取保存的下载信息(文件指针位置) e+5]l>3)f
private void read_nPos() K 6Gri>Um
{ fhZD[m#D
try{ ;0f?-W?1
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 3Vj,O?(Z
int nCount = input.readInt(); On{p(|l
nStartPos = new long[nCount]; (X"WEp^Q{I
nEndPos = new long[nCount]; hVAP
) "5
for(int i=0;i<nStartPos.length;i++) O1_dA%m
{ Jj$N3UCg7
nStartPos = input.readLong(); ch%-Cg~%
nEndPos = input.readLong(); ~~_!&
} DxLN{g]B
input.close(); p kR+H|
} ?u9JRXj%
catch(IOException e){e.printStackTrace ();} >=_Z\ wA
catch(Exception e){e.printStackTrace ();} P|OjtI
} ,^UNQO*{GI
mzl %h[9iI
SH/KC
private void processErrorCode(int nErrorCode) 8[|RsM
{ )./%/
_*K
System.err.println("Error Code : " + nErrorCode); i2EXE0;
} 6(`Bl$M9
hKtc
~#b&UR
//停止文件下载 .WR+)^&zz
public void siteStop() 5)MVkJ=R
{ *y;(c)_w/%
bStop = true; 3d2|vQx,K
for(int i=0;i<nStartPos.length;i++) IwHYuOED]
fileSplitterFetch.splitterStop(); Gn*vVZ@`x
t(|\3$z
kR0d]"dr
} l 6;}nG
} 4ISZyO=
//负责部分文件的抓取 P%6-W5<
**FileSplitterFetch.java + W ?
/A]
*/ fr1/9E;
package NetFox; >~kSe=Hsb4
dX0"h5v1
X=<-rFW
import java.io.*; xYJ|G=h&A
import java.net.*; os]P6TFFX?
o1"MW>B,4
i$Q$y
hT{
public class FileSplitterFetch extends Thread { 2U-F}Z
{ L(Q|bB
Q_bF^4gt
String sURL; //File URL Dwq }O
long nStartPos; //File Snippet Start Position RQZ|:SvV
long nEndPos; //File Snippet End Position F;mK)Q-
int nThreadID; //Thread's ID }?pY~f
boolean bDownOver = false; //Downing is over HY,+;tf2r
boolean bStop = false; //Stop identical Z2]ySyt]
FileAccessI fileAccessI = null; //File Access interface S1<m O-
c8cV{}7Kb
]Hp o[IF
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException HrUQ X4
{ e7<//~W7W
this.sURL = sURL; =U6%Wdth
this.nStartPos = nStart; f*VBSg[`
this.nEndPos = nEnd; BTwLx-p9t
nThreadID = id; m8q3Pp
fileAccessI = new FileAccessI(sName,nStartPos);//定位 7[wHNJ7)r
} A d0dg2Gw
Cc?BJ
)19As8rL/o
public void run() B*+3A!{s
{ idLysxN
while(nStartPos < nEndPos && !bStop) ic}M)S FD;
{ K0#kW \4`
asDq(J`sQ
8#gS{
try{ lD;="b
URL url = new URL(sURL); S
aCa
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); BTXS+mvl
httpConnection.setRequestProperty("User-Agent","NetFox"); [/}y!;3iXM
String sProperty = "bytes="+nStartPos+"-"; qV%t[>
httpConnection.setRequestProperty("RANGE",sProperty); #OKzJ"g
Utility.log(sProperty); I<q=lK
s}]qlg
sbZ$h
<
InputStream input = httpConnection.getInputStream(); 7a@%^G @!
//logResponseHead(httpConnection); 17Q1Xa
:>U2yI
%z6.}4h
byte[] b = new byte[1024]; zDbjWd
int nRead; 1sL#XB$@N
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) L~yu
{ %-y%Q.;k?
nStartPos += fileAccessI.write(b,0,nRead); %ec9`0^4S
//if(nThreadID == 1) (o/HLmr@Y
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); gWo `i
} x~Egax
g0m6D:f
Th&*
d;
Utility.log("Thread " + nThreadID + " is over!"); '/^bO# G:
bDownOver = true; l[EnFbD6
//nPos = fileAccessI.write (b,0,nRead); =qY!<DB[L
} P=:mn>
catch(Exception e){e.printStackTrace ();} ?=:wIMV
} =#N;ZG
} VZ?"yUZ Id
oyGO!j
3"O)"/"Q.
//打印回应的头信息 CKShz]1
public void logResponseHead(HttpURLConnection con) |sN>/89=/
{ [E_eaez7#
for(int i=1;;i++) ~c>* 3*
{ -jc8ku3*
String header=con.getHeaderFieldKey(i); (3YI> /#
if(header!=null) ^`Tns6u>
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ~c~$2Xo
Utility.log(header+" : "+con.getHeaderField(header)); PiD%PBmUl
else HH>"J/;c,
break; cTO\Vhg
} rO]7g
} ;-=Q6Ms8
vc.:du
-2}-;|
public void splitterStop() lW^bn(_gQ
{ \Kph?l9Ww
bStop = true; gC81ICM
} W\s
]qsLS
j';V(ZY&BB
6#S}EaWf
} i5 x[1
`T H0*:aI
LRO'o{4$E
/* Y6T1_XG
**FileAccess.java fk%yi[
*//文件访问(定位,写) mX78Av.z!
package NetFox; FgIL Q"+
import java.io.*; yoKl.U"&
usb.cE3z
3[kY:5-
public class FileAccessI implements Serializable{ T:ye2yg
- aCtk$3
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 d'~sy>
RandomAccessFile oSavedFile; 8}m bfuo1
long nPos; :3k&[W*
o8+ZgXct
t?NB#/#%x
public FileAccessI() throws IOException 0GR\iw$[J
{ Mg
H,"G
this("",0); (?SK< 4!
} !r:X`~\a
o9)pOwk7;
Y>KRI2](<
public FileAccessI(String sName,long nPos) throws IOException ]C|Zs=5
{ ]:CU.M1
oSavedFile = new RandomAccessFile(sName,"rw"); 8(R%?>8
this.nPos = nPos; ueO&%
oSavedFile.seek(nPos); {C>.fg%t
} N&`VMEB)k
"4c
?hH:C
Ue:'55
public synchronized int write(byte[] b,int nStart,int nLen) 7^|oO~x6
{ <3dmY=
int n = -1; i6R2R8
try{ e0O2>w
oSavedFile.write(b,nStart,nLen); 2s, [DC
n = nLen; Bl5*sfjG
} J /3qJst
catch(IOException e) ZMmaM "9
{ l[=7<F
e.printStackTrace (); YQ}xr^VA
} t^0^He$Ot
e)dPv:oK3
l4+!H\2
return n; NET?Ep
} Mq-QWx"P
)ndcBwQc"
,}15Cse
} 0HUSN_3F
%c%0pGn8-
=[8EQdR
/* `Tt}:9/3
**SiteInfoBean.java :'aT4
*/ .Ap-<FB
package NetFox; 'P{0K?{H-4
Fw!wSzsk3
Qmxe*@{`
public class SiteInfoBean { 70,V>=aJ
Dm=t`_DL8
/0Q=}:d
private String sSiteURL; //Site's URL y,&UST
private String sFilePath; //Saved File's Path rQ|^HNj
private String sFileName; //Saved File's Name uP<w rlW
private int nSplitter; //Count of Splited Downloading File 5urM,1SQ@
wjk-$p
sS 5 ]d8
public SiteInfoBean() ugexkdgM
{//nSplitter的缺省值为5 Xg:w;#r,
//default value of nSplitter is 5 *<k8H5z8]
this("","","",5); ;K<e]RI;?
} F&US-ce:M
fUQuEh5_
q[4{Xh
public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) \F]X!#&+
{ )(~s-x^\z@
sSiteURL= sURL; oJC-?
sFilePath = sPath; OgJd^
sFileName = sName; su]CaHU
this.nSplitter = nSpiltter; ( zQ)EHRD
[:gPp)f,
v3|-eWet^
} ;-p1z%
u
SH>L3@Za
Az4+([
public String getSSiteURL() 7'wt/9
{ ~=h M y`Ml
return sSiteURL; )i8Hdtn
} ;AV[bjRE\
%bo0-lnp
3`PPTG
public void setSSiteURL(String value) $o
rN>M42
{ ^'EeJN
sSiteURL = value; ,"?h_NbF
} ?>b>LDpx?
L><# I
cIqk=_]
public String getSFilePath() aty"6~
{ 4Q2=\-KFj
return sFilePath; }7iWm XlI
} PI{;3X}9$,
;J|sH>i
JmDi{B?
public void setSFilePath(String value) j^ L"l;m
{ MhMY"bx8
sFilePath = value; )cA#2mlS'1
} Jy&O4g/'5
C/Vs+aW
n
Q 6djfEN>
public String getSFileName() gL%%2 }$
{ zjVBMqdD
return sFileName; *Ag</g@ h
} AR9D;YfR~
j)4:*R.Z]
+_Nr a
public void setSFileName(String value) ,ra!O=d~0
{ Sa5+_TW
sFileName = value; -dXlGOD+C
} ? b;_T,S[
(_S`9Z8=
x]
[/9e
public int getNSplitter() u6o:~=WwM
{ RlH|G
return nSplitter; *?|LE
C
} V1Yab#
:1h1+b@,
S~BBBD
public void setNSplitter(int nCount) $OI 6^
{ hdky:2^3
nSplitter = nCount; nulCk33x'=
} t)|*-=
} wQR>S>p
l ;"v&?
@<]sW*s
/* 9>gxJ7pY
**Utility.java r{y&}gA
*/ qYD$_a
package NetFox; }Ruj h4*
z~[:@mGl
4 .7YIM
public class Utility { npsDy&