/* Y'{}L@"t
**SiteFileFetch.java jG~-V<&
*/ :i4AkBNK
package NetFox; 0K'{w]Q
import java.io.*; 5vFM0
import java.net.*; $l2`@ia"
9a[1s|>w-
/qKA1-R}4
public class SiteFileFetch extends Thread { cLEd-{x
-4[eZ>$A|
4E2#krE%
SiteInfoBean siteInfoBean = null; //文件信息Bean (gnN</%
long[] nStartPos; //开始位置 Atb`Q'Yrw
long[] nEndPos; //结束位置 K@<*m!%<2
FileSplitterFetch[] fileSplitterFetch; //子线程对象 _TLspqi
long nFileLength; //文件长度 Nw9@E R
boolean bFirst = true; //是否第一次取文件 E[WU
boolean bStop = false; //停止标志 #.rkvoB0N
File tmpFile; //文件下载的临时信息 kebk f,`p
DataOutputStream output; //输出到文件的输出流
W[I$([
eL>wKu:r
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) p5jR;nOZ%l
public SiteFileFetch(SiteInfoBean bean) throws IOException !E&l=*lM.
{ F?$Vx)HI
siteInfoBean = bean; vf zC2
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); [[HCP8Wk
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); fF(AvMsO
if(tmpFile.exists ()) O=t~.]))
{ t{>#)5Pqv
bFirst = false; \6 1H(,
read_nPos(); 0$ON`Vsu|
} &@,lF{KTL
else X~UL$S;
{ pV(k6h
nStartPos = new long[bean.getNSplitter()]; Z^]jy>dj
nEndPos = new long[bean.getNSplitter()]; c(uDkX
} }W@refS
(kVY\!UAt
]isq}Qv~
>|, <9z`D
} P4HoKoj2`
)H @<A93
*v%gNq
public void run() -.r"|\1X
{ GMg!2CIU
//获得文件长度 3$xpZm60
//分割文件 TE;f*!
//实例FileSplitterFetch KTt+}-vP^
//启动FileSplitterFetch线程 Zr1"'+-
//等待子线程返回 (u^8=#
try{ etT9}RbQ
if(bFirst) \?oT.z5VG&
{ z Ohv>a
nFileLength = getFileSize(); 71@kIJI
if(nFileLength == -1) w>8HS+
{ c0Bqm
System.err.println("File Length is not known!"); wm^1Fn--
} }-sh
else if(nFileLength == -2) w,X)g{^T
{ SHs [te[
System.err.println("File is not access!");
T*mR9 8i
} m_Pk$Vwx
else !yT=*Cj4
{ qtdkK LT
for(int i=0;i<nStartPos.length;i++) _h4]gZ
{ q6N{N>-D
nStartPos = (long)(i*(nFileLength/nStartPos.length)); akk*f+TD`
} FAL#p$y}
for(int i=0;i<nEndPos.length-1;i++) ZB|s/
{ B8eZ}9X
nEndPos = nStartPos[i+1]; qE3Ud:j
} ]zVQL_%,
nEndPos[nEndPos.length-1] = nFileLength; C[<{>fl)
} 'zav%}b]L
} p+<qI~
p2Gd6v.t
V dvj*I
//启动子线程 ]Tb?z&
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; k~so+k&=b
for(int i=0;i<nStartPos.length;i++) ,t QNL\t
{ Y@:l!4DI
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _f8H%Kgk;
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5=8v\q?)c
nStartPos,nEndPos,i); t\LE\[XM>
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 50dN~(;p
fileSplitterFetch.start(); IP$eJL[&D"
} JBA{i45x
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), xv Xci W
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 8\9W:D@"x
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ks sRwe%>;
nEndPos = " + nFileLength); ?*$uj(
// fileSplitterFetch[nPos.length-1].start(); {ZSAPq4)L
n|? sNM<J3
zRmVV}b
//等待子线程结束
E.;Hm;
//int count = 0; n:B){'S
//是否结束while循环 <m^a
?q^
boolean breakWhile = false; *1!'ZfT;
w)* H&8h@
0FE_><e
while(!bStop) +zbCYA
{ :R
+BC2x
write_nPos(); n 7B2rRJH
Utility.sleep(500); lK/4"&
breakWhile = true; ,aD~7QX1:
@=Pc{xp
v FQ]>nX
for(int i=0;i<nStartPos.length;i++) .SmG) 5U]
{ 88<d<)7t
if(!fileSplitterFetch.bDownOver) yPT o,,ca=
{ 5D=U.UdR
breakWhile = false; ]@cI _n
break; ZvQZD=,F
} r_ +!3
} uH?4d!G
if(breakWhile) Xjxa
2D
break; !]}C!dXd
j@#RfVx
y{<js!au
//count++; 8@+<W%+th
//if(count>4) N-b'O`C
// siteStop(); suIYfjh
} %scIZCrI~
mXhC-8P
A@?-"=h}
System.err.println("文件下载结束!"); ns~bz-n
} -6WSYpHV
catch(Exception e){e.printStackTrace ();} AxH`4=3<
} BMQ4i&kF|
~N}Zr$D
6Ad UlPM
//获得文件长度 Drf Au
public long getFileSize() #@w/S:KbJt
{ pYm#iz
int nFileLength = -1; 7O%^4D
try{ _a9oHg
URL url = new URL(siteInfoBean.getSSiteURL()); _g9j_
x:=
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ZU0*iA
httpConnection.setRequestProperty("User-Agent","NetFox"); 4`9ROC
As5l36
M6quPj
int responseCode=httpConnection.getResponseCode(); I(kEvfxc"
if(responseCode>=400) 6C"zBJcGc
{ Y1>OhHuN
processErrorCode(responseCode); RTbV!I
return -2; //-2 represent access is error _*g.U=u
} ~iiDy;"
i9rv8"0>
Gg
GjBt
String sHeader; -R1;(n)
w(Tr,BFF
uVhzJu.
for(int i=1;;i++) B 5qy4MFWs
{ tI^[|@,
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); pRxVsOb
//Utility.log(in.readLine()); FIAmAZH}_
sHeader=httpConnection.getHeaderFieldKey(i); %jf|efxo
if(sHeader!=null) 7rbw_m`12-
{ T*Ge67
if(sHeader.equals("Content-Length")) =
=Q*|L-g
{ 9 `bLQd
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); P0_Ymn=&