/* ld|5TN1
**SiteFileFetch.java (^8Y|:Tz
*/ ~ drS} V
package NetFox; zH?!
import java.io.*; jH5
k
import java.net.*; }l(&}#dY
Gv!2f
~NrG`
D}
public class SiteFileFetch extends Thread { EnKR%Ctw
~9a<0Mc?
j\[dx^\=
SiteInfoBean siteInfoBean = null; //文件信息Bean )0.kv2o.
long[] nStartPos; //开始位置 [64:4/<}
long[] nEndPos; //结束位置 Sxt"B
FileSplitterFetch[] fileSplitterFetch; //子线程对象 7{e
4c
long nFileLength; //文件长度 r_)' Ps
boolean bFirst = true; //是否第一次取文件 P%V'4p c
boolean bStop = false; //停止标志 GfxZ'VIn
File tmpFile; //文件下载的临时信息 fa
jGZyd0:
DataOutputStream output; //输出到文件的输出流 :KSV4>X[%a
rKe2/4>0X
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Z,
zWuE3
public SiteFileFetch(SiteInfoBean bean) throws IOException aD<A.Lhy
{ QUwd [
siteInfoBean = bean; y|C(X
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); qTRsZz@
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ,8S/t+H
if(tmpFile.exists ()) -/wtI
{ tVYF{3BhA
bFirst = false; n$MO4s8)
read_nPos(); YFLZ %(
} XO>KZV7)
else 6y-@iJ*ld;
{ 4M=]wR;
nStartPos = new long[bean.getNSplitter()]; rT=rrvV3g
nEndPos = new long[bean.getNSplitter()]; ?qv
!w~m<
} m4[ ;(1
|{z:IQLv
FZ{h?#2?
: Xda1S
} uanhr)Ys
gDQ^)1k
G)AqbY
public void run() J|W<;
{ 1jmjg~W
//获得文件长度 JK7G/]j+Ez
//分割文件 EKYY6S2
//实例FileSplitterFetch P>y@kPi
//启动FileSplitterFetch线程 QGMV}y
//等待子线程返回 <O(4TO
try{ |%BOZT
if(bFirst) N~nziY*C,*
{ $g^@AdE%
nFileLength = getFileSize(); ]}>2D,;
if(nFileLength == -1) Z\(q@3 C
{ z 4e7PW|
System.err.println("File Length is not known!"); AmUr.ofu
} rX U
else if(nFileLength == -2) [$ubNk;!z
{ lB8-Z ow
System.err.println("File is not access!"); :tc@2/>!O
} I
}a`0Y&{
else ")1:F>
{ DHg:8%3x
for(int i=0;i<nStartPos.length;i++) y B81f
{ *[Imn\hu
nStartPos = (long)(i*(nFileLength/nStartPos.length)); H9Gh>u]}
} R)?*N@.s
for(int i=0;i<nEndPos.length-1;i++) 0gu_yg! R
{ [CTnXb
nEndPos = nStartPos[i+1]; /m!BY}4W
} B5,N7z34F
nEndPos[nEndPos.length-1] = nFileLength; <X#C)-.
} ^7`BP%6
} OW&!at
~V:\ _{mE
dUD[e,?
//启动子线程 WSPI|#Xr%
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; "syI#U{
for(int i=0;i<nStartPos.length;i++) n.}Zk G0`
{ xf'V{9*
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "-E\[@/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "6("9"
nStartPos,nEndPos,i); `{gHA+B
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); nd`1m[7MNu
fileSplitterFetch.start(); FBG4pb9=~
} B5`EoZ
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), av(6wht8
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 3RUy,s
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", fQ7V/x!
nEndPos = " + nFileLength); +Z,;,5'5G
// fileSplitterFetch[nPos.length-1].start(); 2/U.|*mH
#QZe,"C9`
5f rX
//等待子线程结束 9v#CE!
//int count = 0; k<z)WNBf
//是否结束while循环 xPdG*OcX!
boolean breakWhile = false; \wmN
wC"FDr+
M+oHtX$
while(!bStop) XjB W9a
{ 05|=`eJ
write_nPos();
)| ccX
Utility.sleep(500); MnmVl"(/
breakWhile = true; hy9\57_#
1l9G[o
*
Oz.HH
for(int i=0;i<nStartPos.length;i++) EX*HiZU>
{ 4a&RYx
if(!fileSplitterFetch.bDownOver) 2bz2KB5>
{ //B&k`u
breakWhile = false; ;2G*wR
break; &.3"Uo\#
} &*o=I|pQ
} }ZYd4h|g\z
if(breakWhile) 3s*mbk[J
break; `4r 3l S
_9ao?:
@?ebuj5{e
//count++; ]IaMp788
//if(count>4) ~"gA,e-)
// siteStop(); "2!&5s,1p
} C-xr"]#]
@b\$ yB@z
1> ?M>vK
System.err.println("文件下载结束!"); n>z9K')
} 5; C|
catch(Exception e){e.printStackTrace ();} VCYwzB
} ,};&tR
'I|v[G$l
j\yjc/m
//获得文件长度 XoK:N$\}t
public long getFileSize() $L`d&$Vh
{ 'JtBZFq
int nFileLength = -1; #Bze,?@
try{ UhF-K#Z9
URL url = new URL(siteInfoBean.getSSiteURL()); 5{TsiZh4
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3l]lwV
httpConnection.setRequestProperty("User-Agent","NetFox"); 'B$yo]
SZ7:u895E
?9vuuIE
int responseCode=httpConnection.getResponseCode(); a"1t-x
if(responseCode>=400) ?Rb9|`6
{ yNBQGSH
processErrorCode(responseCode); S
E<FL/x1#
return -2; //-2 represent access is error ]Ee?6]bN
}
y`iBFC;_
^^u5*n+5
y
G~?MEh{
String sHeader; _{ue8kGt
,O5NLg-
~i= _J3'
for(int i=1;;i++) \0gis#
{ B^=-Z8
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); t3WiomNCc
//Utility.log(in.readLine()); .N;=\C*
sHeader=httpConnection.getHeaderFieldKey(i); ;._
l0Jw
if(sHeader!=null) cdH>n)
{ E,Z$pKL?
if(sHeader.equals("Content-Length")) Xfc-UP|}
{ q_lKKzA
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
Q>qUk@
break; ux-/>enc
} umBICC]CU
} W ~<^L\Lu
else u~N?NW Q
break; iO$8:mxm0?
} Y;eZ9|Ht9
} [|wZ77\
catch(IOException e){e.printStackTrace ();} Z{.8^u1I
catch(Exception e){e.printStackTrace ();} NSMyliM1Y
ZmqKQO
wVXS%4|v
Utility.log(nFileLength); W-f=]eWg
>gQ>1Bwvi
uh_RGM&
return nFileLength; *tFHM &a
} C.:<-xo
u]wZQl#-
.8g)av+
//保存下载信息(文件指针位置) ~%F9%=
private void write_nPos() 8$cLG*=h4
{ CZe ]kXNv
try{ )CYGQMK
output = new DataOutputStream(new FileOutputStream(tmpFile)); w_c"@CjkE
output.writeInt(nStartPos.length); <V'@ks%
for(int i=0;i<nStartPos.length;i++) L- iy
{ qx(xvU9
// output.writeLong(nPos); %QH$ipM
output.writeLong(fileSplitterFetch.nStartPos); h
f)?1z4
output.writeLong(fileSplitterFetch.nEndPos); 3Aip}<1
} *"2+B&Y
output.close(); iozt&~o
} X #dmo/L8
catch(IOException e){e.printStackTrace ();} :k]1Lm||
catch(Exception e){e.printStackTrace ();} h^45,E C
} g'f@H-KCD
tIi&;tw]
BR_1MG'{)$
//读取保存的下载信息(文件指针位置) Z#jZRNU%ox
private void read_nPos() 68|E9^`l
{ S\EyCi+
try{ f%JIp#B
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); PQt")[
int nCount = input.readInt(); w(Ovr`o?9t
nStartPos = new long[nCount]; SGRp3,1\4%
nEndPos = new long[nCount]; Jrf=@m\dk
for(int i=0;i<nStartPos.length;i++) KkyVSoD\
{ }Bh8=F3O
Q
nStartPos = input.readLong(); YaqR[F
nEndPos = input.readLong(); k}CVQ@nd
} @IKYh{j4
input.close(); V-P#1Kkh
} ssA`I<p #
catch(IOException e){e.printStackTrace ();} ,,.QfUj/&
catch(Exception e){e.printStackTrace ();} FXCMR\BsQ
} ZoqZap6e
P[-E@0h)-t
Kn{4;Xk\
private void processErrorCode(int nErrorCode) _ye |Y
{ \\ij(>CI
System.err.println("Error Code : " + nErrorCode); :G=fl)!fE
} Ny7 S
y7 cl_ rK
l4YbK np]
//停止文件下载 c]<5zyl"j1
public void siteStop() 0o4XUW
{ k'Hs}z eNn
bStop = true; s)t@ol
for(int i=0;i<nStartPos.length;i++) M?49TOQA
fileSplitterFetch.splitterStop(); ;d$rdFA_
q q`4<0 I>
2s8a
$3
} bj^5yX;2
} ]cvwIc">
//负责部分文件的抓取 0auYG><=
**FileSplitterFetch.java aK~8B_5k8
*/ 8`{:MkXP
package NetFox; aKDKmHd
;1=1:S8
<=&`ZH
import java.io.*; e"cXun4nS=
import java.net.*; R^fPIv`q
uMv,zO5
bWS&Yk(
public class FileSplitterFetch extends Thread { FxY}m
lFj]4
T<>,lQs(a
String sURL; //File URL E=Bf1/c\
long nStartPos; //File Snippet Start Position Y-z(zS^1
long nEndPos; //File Snippet End Position \l0[rcEf
int nThreadID; //Thread's ID =%O6:YM
boolean bDownOver = false; //Downing is over fbvL7*
(
boolean bStop = false; //Stop identical /s?`&1v|r
FileAccessI fileAccessI = null; //File Access interface n&/
`
DfD&)tsMQ
N>1em!AS
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Oo~;
L,
{ W*:.Gxv]
this.sURL = sURL; 6_;icpN]
this.nStartPos = nStart; MchA{p&Ol
this.nEndPos = nEnd; hZ,_6mNg
nThreadID = id; I
34>X`[o
fileAccessI = new FileAccessI(sName,nStartPos);//定位 a-tmq]]E
} @1j
}>|s=uGW
/maJtX'
public void run() 2tO,dx
{ Rp7mh]kZ
while(nStartPos < nEndPos && !bStop) DCa^
u'f
{ 9=tIz
d-ko
^Y0
3=[mP,pLh
try{ `}\
"Aw c
URL url = new URL(sURL); 8Fh)eha9f
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); U/M>?G~
httpConnection.setRequestProperty("User-Agent","NetFox"); >Tx?%nQ
String sProperty = "bytes="+nStartPos+"-"; TX/Xt7#R:
httpConnection.setRequestProperty("RANGE",sProperty); |e&\<LwsP
Utility.log(sProperty); 'Is kWgc
y^*~B(T{
T!{w~'=F
InputStream input = httpConnection.getInputStream(); .{^5X)
//logResponseHead(httpConnection); kZ:ZtE
="H%6S4'
|Ez>J+uye(
byte[] b = new byte[1024]; B[Scr5|
int nRead; P+sW[:
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 3?yg\
{ i]4I [!
nStartPos += fileAccessI.write(b,0,nRead); n@i HFBb
//if(nThreadID == 1) WwFm*4{[o
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); r6qj7}\
} >=>2m2z=
v?$:@9pAk
:cECRm*
Utility.log("Thread " + nThreadID + " is over!"); JbbzV>
bDownOver = true; "sCRdx]_
//nPos = fileAccessI.write (b,0,nRead); xo&_bMO
} ^
@5QP$.
catch(Exception e){e.printStackTrace ();} V!=,0zy~Z
} 3d]S!=4H"
} J8(lIk:e
&z3o7rif$
0d&6lqTo
//打印回应的头信息 NI]N4[8(
public void logResponseHead(HttpURLConnection con) 6gE7e|+
{ 'H!Uh]!
for(int i=1;;i++) R n[cW5Y<
{ am'7uy!ka~
String header=con.getHeaderFieldKey(i); kzLsoZ!I
if(header!=null) X_h}J=33Q
//responseHeaders.put(header,httpConnection.getHeaderField(header)); cT,sh~-x,
Utility.log(header+" : "+con.getHeaderField(header)); 8<.Oq4ku
else Il'fL'3
break; t*u:hex
} eym4=k ~
} /3T1U
Gd=RyoJl
KpGhQdR#
public void splitterStop() niyV8v
{ CTa57R
bStop = true; oc`H}Wvn
} F41=b4/
3 0H?KAV
NLqzi%s
} da(<K}
PZ9I`P!C
tsjrRMR
/* cwg"c4V
**FileAccess.java z:*|a+cy
*//文件访问(定位,写) D,feF9
package NetFox; ,qxu|9L
import java.io.*; bn5 Su=]
25?6gu*Z
Xv^qVn4
public class FileAccessI implements Serializable{ i/4>2y9/F4
vs4>T^8e
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 '=pU^Oz<}
RandomAccessFile oSavedFile; y)@wjH{6
long nPos; K0>zxqY
o+'6`g'8
0l6.<-f{
public FileAccessI() throws IOException (<9u-HF#
{
8A#;WG
this("",0); mzgfFNm^G)
} 77Dn97l)&
7@Qcc t4A
ZECfR>`x
public FileAccessI(String sName,long nPos) throws IOException e^voW"?%
{ <5051UEu
oSavedFile = new RandomAccessFile(sName,"rw"); 2+XAX:YD
this.nPos = nPos; ;V!D:5U
oSavedFile.seek(nPos); @VEb{ w[H
} |6-nbj
9*M,R,y
@yYkti;4-
public synchronized int write(byte[] b,int nStart,int nLen) z b3tIRH
{ =s6 opL)
int n = -1; 59u}W 0
try{ l/5
hp.
oSavedFile.write(b,nStart,nLen); [/r(__.
n = nLen; `a/`,N
} ^2rN>k,?
catch(IOException e) yG{TH0tq
{ E1
2uZ$X
e.printStackTrace (); FS O).=#
} F== p<lrs
XiWmV ?
K&-"d/QuLg
return n; !N^@4*
} m&3xJuKih
"{t$nVJ
P%n>Tg80M
} a<e[e>
SpBy3wd
~xTt204S
/* -9?]IIVb
**SiteInfoBean.java ;_=&-mz
*/ o mx=
package NetFox; Mtx 4'WZ
;'1d1\wiDQ
V7/Rby Q
public class SiteInfoBean { [}m[ )L\
gX@aG9
DlJo^|5
private String sSiteURL; //Site's URL *T1_;4i
private String sFilePath; //Saved File's Path {!`6zBsP
private String sFileName; //Saved File's Name #vlgwA
private int nSplitter; //Count of Splited Downloading File lOp`m8_=
8@R|Km5h
Fr-SvsNFB
public SiteInfoBean() 7tp36 TE
{//nSplitter的缺省值为5 l[J8!u2Xp
//default value of nSplitter is 5 P+}h$_x
this("","","",5); j~MI<I+l[
} WIGi51yC.x
ALHIGJW:6$
6]wIG$j
public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ,esmV-
{ ar,7S&s