/* t1w5U+z
**SiteFileFetch.java *9\j1Nd
*/ xMjhC;i{
package NetFox; ]Dq6XR
import java.io.*; 1/M^7Vb.
import java.net.*; A6z,6v6
\CjJa(vV
%1i:*~g
public class SiteFileFetch extends Thread { oco,sxT
t2dsYU/
h4`8C]
SiteInfoBean siteInfoBean = null; //文件信息Bean OJ&'Z}LB
long[] nStartPos; //开始位置 [G}dPXD
long[] nEndPos; //结束位置 cGV%=N^BE<
FileSplitterFetch[] fileSplitterFetch; //子线程对象 05wkUo:9
long nFileLength; //文件长度 t\Vng0
boolean bFirst = true; //是否第一次取文件 ",/6bs#$
boolean bStop = false; //停止标志 H$I~Vz[\yb
File tmpFile; //文件下载的临时信息 )g@+
MR
DataOutputStream output; //输出到文件的输出流 rI$NNk'A
*u+DAg'&
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) :
@|Rj_S;
public SiteFileFetch(SiteInfoBean bean) throws IOException v2;E W p
{ B?j t?
siteInfoBean = bean; /b,>fK^
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); IW\^-LI.
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 0|AgmW_7
.
if(tmpFile.exists ()) rj=as>6B
{ !ZTghX}D
bFirst = false; Biv)s@"f-Q
read_nPos(); Q:P)g#suc
} (.#nl}fA
else irlFB#..
{ &PC6C<<f
nStartPos = new long[bean.getNSplitter()]; _^_3>}y5op
nEndPos = new long[bean.getNSplitter()]; A+l(ew5Lw$
} 'Ix@<$~i3F
if&bp ,
.)/."V
B{/og*xd*1
} `4K|L6
gKb,Vrt
f#ZM2!^!
public void run() T";evM66
{ kP`#zwp'Ci
//获得文件长度 |^1g*fy?
//分割文件 7^i7U-A<A
//实例FileSplitterFetch 1hw.gn*JK>
//启动FileSplitterFetch线程 y`oj\
//等待子线程返回 >az~0PeEL
try{ ~\am%r>
if(bFirst) `t/j6e]
{ [!)HWgx
nFileLength = getFileSize(); O[d#-0s
if(nFileLength == -1) nXn@|J&z~U
{ eWFkUjz
System.err.println("File Length is not known!"); M-t9M~
} d92Z;FWb
else if(nFileLength == -2) #ZJ 1\Ov
{ T+L=GnYl
System.err.println("File is not access!"); 8y27O
} [7}3k?42X
else i+14!LlI
{ iZG-ca
for(int i=0;i<nStartPos.length;i++) tU?BR<q
{ P;.roD9
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 4~Qnhv7
} FO/cEu
for(int i=0;i<nEndPos.length-1;i++) Tw';;euw
{ t{c:<nN
nEndPos = nStartPos[i+1]; :;_}Gxx
} I/w;4!+)
nEndPos[nEndPos.length-1] = nFileLength; X{ x(p
} ,a&,R*r@&
} :,l16{^
sgOau\E
>c_fUX={
//启动子线程 lW5Lwyt8
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; E0I/]0
for(int i=0;i<nStartPos.length;i++) /wEl\Kx
{ oz=V|7,
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 'ge$}L}4
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), +\ftSm>
nStartPos,nEndPos,i); IoLP*D
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); H<|}pZ
fileSplitterFetch.start(); sg=G<50i
} dDA8IW![S
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), I=dn]}b#P
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); pfZ[YC-
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;.AMP$o`(Y
nEndPos = " + nFileLength); cO]w*Hti
// fileSplitterFetch[nPos.length-1].start(); lD0a<L3
@U!&XZ]h
Xps
\+l%i
//等待子线程结束 MhA4C 8
//int count = 0; gbYM1guiD
//是否结束while循环 ~D@ YLW1z(
boolean breakWhile = false; U%pB
C)c*s C5N
DTH}=r-
while(!bStop) 5wW5
n5YS
{ lv?`+tU2_
write_nPos(); c/ImK`:)4a
Utility.sleep(500); I(AlRh
breakWhile = true; }j2;B 8j
}' tJc $!
QGI@5
for(int i=0;i<nStartPos.length;i++) OD7^*j(p`
{ w0;4O)H$O
if(!fileSplitterFetch.bDownOver)
ilQ}{p6I
{ <[n:Ij
breakWhile = false; tl /i
break; QxG^oxU}
} eI"pRH*f
} @5wc 3y
if(breakWhile) ,,G"EF0A
break; E oixw8hz
7b08Lo7b
%y9sC1T
//count++; 6)0.q|Q
//if(count>4) n%29WF6Zf
// siteStop(); sgP{A}4 W
} "`cN k26JZ
#<==7X#
~b*]jZwT
System.err.println("文件下载结束!"); (/<Nh7C1c
} 9tv,,I;iU
catch(Exception e){e.printStackTrace ();} 2DPv7\fW
} q/zU'7%@
al}J^MJ
s&pnB
//获得文件长度 9vyf9QE;
public long getFileSize() 2?
yo
{ xE;O =mI
int nFileLength = -1; G3:!]}
try{ g/f6N
z
URL url = new URL(siteInfoBean.getSSiteURL()); 17?YN<
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]i(/T$?~
httpConnection.setRequestProperty("User-Agent","NetFox"); X-nC2[tu'W
yIn$ApSGY
d2Q*1Q@u
int responseCode=httpConnection.getResponseCode(); hT 1JEu
if(responseCode>=400) So!=uYX
{ h_#=f(.'j
processErrorCode(responseCode); V6P-?Nd
return -2; //-2 represent access is error CnL=s6XD'
} -O\i^?lD;
"g5{NjimY
l90"1I A
String sHeader; B2j1GJEO
I4jRz*Ufe?
:Q"|%#P
for(int i=1;;i++) 1}a4AGAp
{ KWY_eY_|
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); V>T?'GbS
//Utility.log(in.readLine()); y8s!sO
sHeader=httpConnection.getHeaderFieldKey(i); an"~n`g
if(sHeader!=null) )L:e0u
{ ?Q-Tyf$3
if(sHeader.equals("Content-Length")) HQm_ K0$
{ #{|cSaX<
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); o p9dYjG7
break; x']'ODs
} ?'P}ZC8P
} {7goYzQsi%
else To>,8E+GAb
break; klJ21j0Bb2
} Q"qI'*Kgt
} l{Df{1b.
catch(IOException e){e.printStackTrace ();} h[]9F.[
catch(Exception e){e.printStackTrace ();} pc*)^S
uTR^K=Ve
\_1a#|97e
Utility.log(nFileLength); tsc`u>
vv
,4n&D
A0)^I:&
return nFileLength; Vbl-Ff
} {zAI-?#*u
hU#e\L 7
#; ?3kuq(
//保存下载信息(文件指针位置) w95M
B*N
private void write_nPos() !CYC7HeF
{ =D/zC'l
try{ )JS6W
output = new DataOutputStream(new FileOutputStream(tmpFile)); 0y9 b0G
output.writeInt(nStartPos.length); U7s$';y"%
for(int i=0;i<nStartPos.length;i++) GF ux?8A:%
{ yc](
// output.writeLong(nPos); nzflUR{`-
output.writeLong(fileSplitterFetch.nStartPos); 2 kDsIEA
output.writeLong(fileSplitterFetch.nEndPos); Z0Z6aZeb
} EraGG"+
output.close(); h+[6i{
} `t U
catch(IOException e){e.printStackTrace ();} 3gi)QCsk
catch(Exception e){e.printStackTrace ();} *1dDs^D#|
} AYbO~_a\N
KMRPleF
)Z/"P\qo
//读取保存的下载信息(文件指针位置) @gI1:-chB
private void read_nPos() |H5.2P&9-5
{ Tz]R}DKB&
try{ !ZBtXt#P
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); \Rny*px
int nCount = input.readInt(); K!-OUm5A
nStartPos = new long[nCount]; n"(!v7YNp
nEndPos = new long[nCount]; "}]$ag!`q$
for(int i=0;i<nStartPos.length;i++) jo`ZuN{
{ Jxe+LG
nStartPos = input.readLong(); T D_@0Rd
nEndPos = input.readLong(); BN_h3|)
} 3'4+3Xo
input.close(); ywa*?3?c
} 3z+l-QO8
catch(IOException e){e.printStackTrace ();} YFO{i-*q
catch(Exception e){e.printStackTrace ();} {a7~P0$
} bNea5u##
UnhVppnex
ZwmucY%3
private void processErrorCode(int nErrorCode) %**f`L%jN
{ [^5\Ww
System.err.println("Error Code : " + nErrorCode); g*Y,.
} ";K w?
q-F
K=r 5
EApKN@<"
//停止文件下载 )[Y B&
public void siteStop() &k}f"TX2
{ *%j$i_
bStop = true; P6:C/B
for(int i=0;i<nStartPos.length;i++) l:85 _E
fileSplitterFetch.splitterStop(); %$!3Pbui
/ ;]5X
:KLXrr
} z|l*5@p
} .Mt3ec<
//负责部分文件的抓取 G.W !
**FileSplitterFetch.java Yd^@Ei9
*/ ;a:H-iC
package NetFox; YDt+1Kw}D
$<}c[Nm
{MUB4-@?F$
import java.io.*; W'lqNOX[v
import java.net.*; Swi#^i
UtZ,q!sg
sibYJK Oy
public class FileSplitterFetch extends Thread { }cKB)N
BJb
._mep\#.:
Rj8%% G-pt
String sURL; //File URL
#&Sr;hAJ
long nStartPos; //File Snippet Start Position 1yy?1&88S
long nEndPos; //File Snippet End Position )Fw/Cu
int nThreadID; //Thread's ID V~J5x >O
boolean bDownOver = false; //Downing is over vF$i"^;tJ;
boolean bStop = false; //Stop identical 'rQ"Dc1D
FileAccessI fileAccessI = null; //File Access interface bDI%}k9#
@f!X%)\;x
IK~&`n](>
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException QLA.;`HIE
{ .n-#A
this.sURL = sURL; y_]+;% w:
this.nStartPos = nStart; 5j%G7.S\
this.nEndPos = nEnd; C0rf
nThreadID = id; ; *
[:~5Wc
fileAccessI = new FileAccessI(sName,nStartPos);//定位 4w4B\Na>l
} *{o7G a
>@ t
(~T*yH ~
public void run() H=t"qEp
{ 7*/{m K)
while(nStartPos < nEndPos && !bStop) &4#Zi.]
{ s0kp(t!fiu
Ic&h8vSU
8~sP{V%
try{ vDy&sgS$<
URL url = new URL(sURL); +2tQFV;
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); >4 OXG7.&f
httpConnection.setRequestProperty("User-Agent","NetFox"); jvT'N@
String sProperty = "bytes="+nStartPos+"-"; dWqn7+:
httpConnection.setRequestProperty("RANGE",sProperty); {4"V)9o-1>
Utility.log(sProperty); K%^n.
?b7\m":'
3} A$+PX
InputStream input = httpConnection.getInputStream(); Bq0 \T
0,
//logResponseHead(httpConnection); 0p.bmQSH
n ]ikc|
WJ7|0qb
byte[] b = new byte[1024]; 4s\spvJ
int nRead; >r.]a `
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) pYO =pL^Q
{ 0=d2_YzSf
nStartPos += fileAccessI.write(b,0,nRead); rIb+c=|F
//if(nThreadID == 1) VYyija:
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *kr/,_K
} eH&F gmU
T U%@_vYR
+A9~h/"kt
Utility.log("Thread " + nThreadID + " is over!"); Cu"Cpt[
bDownOver = true; }r}*=;Ea
//nPos = fileAccessI.write (b,0,nRead); :1v,QEb\
} qsj{0 Go
catch(Exception e){e.printStackTrace ();} Obdn#Wm=
} W{p}N
} ul{x|R
9tiZIm93]
*4,Q9K_
//打印回应的头信息 J0G@]H
public void logResponseHead(HttpURLConnection con) t0)1;aBZ
{ )0{`}7X
for(int i=1;;i++) +X?ErQm
{ _0/unJl`
String header=con.getHeaderFieldKey(i); dBWny&
if(header!=null) )m%uSSx#
//responseHeaders.put(header,httpConnection.getHeaderField(header)); _0H oJ
Utility.log(header+" : "+con.getHeaderField(header)); ;m/e|_4;y
else pP<8zTLn
break; 8f@}-
} CK* *RZ
} F!z0N
f@*69a8
5Rqdo\vE
public void splitterStop() 'Waazk[@O
{ &OR(]Wt0
bStop = true; 0b&