/* hp%|n:.G
**SiteFileFetch.java nDkyo>t.
*/ %QVX1\>]
package NetFox; bb$1RLyRL
import java.io.*; oS/<)>\Gv
import java.net.*; V Z}^1e
T#|Qexz6 @
1G=1FGvP
public class SiteFileFetch extends Thread { sn+i[
H-nk\ K<|
<)uUAh
SiteInfoBean siteInfoBean = null; //文件信息Bean hc"+6xc
long[] nStartPos; //开始位置 H"WkyvqXb
long[] nEndPos; //结束位置 82YTd(yB
FileSplitterFetch[] fileSplitterFetch; //子线程对象 $s/N;E!t
long nFileLength; //文件长度 9-Ikd>9
boolean bFirst = true; //是否第一次取文件 0J7[n*~
boolean bStop = false; //停止标志 4G;+ETp
File tmpFile; //文件下载的临时信息 f%an<>j^w
DataOutputStream output; //输出到文件的输出流 G=jdb@V/?
WT;=K0W6&
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) u!k\W{
public SiteFileFetch(SiteInfoBean bean) throws IOException S3MMyS8
{ G{knO?BK
siteInfoBean = bean; KY!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); sI@m"A
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info");
ZQD_w#0j
if(tmpFile.exists ()) }wC
pr.@
{ T3@wNAAU
bFirst = false; $`i$/FE
read_nPos(); b~Y$!fc
} fk5!/>X
else R KFz6t
{ % rRYT8
nStartPos = new long[bean.getNSplitter()]; m_W\jz??k
nEndPos = new long[bean.getNSplitter()]; ;? '`XB!
} %q;3bfq@N
8%_XJyg
[kt!\-
9Y&n$svB
} z~L4BY @z
M+gQN}BAr
;'`T
public void run() [`Ol&R4k
{ d8C?m*3J
//获得文件长度 !?DPI)
//分割文件 4+:Q"
//实例FileSplitterFetch );kO27dg
//启动FileSplitterFetch线程 aG%KiJ7KEN
//等待子线程返回 ~x)Awdlu
try{ QjWv?tm
if(bFirst) 'aBX>M
{ z[M LMf[c
nFileLength = getFileSize(); .6z#o{n
if(nFileLength == -1) U-QK
{ %ErLL@e
System.err.println("File Length is not known!"); L
Bb&av
} Cl7IP<.
else if(nFileLength == -2) 1tDd4r?Y
{ m>x.4aO1
System.err.println("File is not access!"); \;&j;"c,W
} :2^%^3+V
else =W.b7 6_
{ fZ`b~ZBwIj
for(int i=0;i<nStartPos.length;i++) JX7_/P
{ |qH -^b.F
nStartPos = (long)(i*(nFileLength/nStartPos.length)); Sqed*
} Lp5LRw
for(int i=0;i<nEndPos.length-1;i++) |P$tLOrG
{ lE78Yl]
nEndPos = nStartPos[i+1]; UA!-YTh
} AY5%<CWj8
nEndPos[nEndPos.length-1] = nFileLength; .5 p"o-:D
} }N]|zCEj
} R3TdQ6j
7Y&W^]UZ0t
r,(rWptf4
//启动子线程 T\:Vu{|
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; rZLTai}`>
for(int i=0;i<nStartPos.length;i++) |_&vW\
{ v,bes[Ik
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), w,SOvbAxX2
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ` {c %d
nStartPos,nEndPos,i); =5l7{i*`
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); EoD;'+d
fileSplitterFetch.start(); #~ ^#%G
} y#F( xm+L
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -8-
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); x~j>Lvw L
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 'H`aQt+
nEndPos = " + nFileLength); e[$=5U~c
// fileSplitterFetch[nPos.length-1].start(); 8)s}>:}
Rb
Jl;
oS 7 q#`
//等待子线程结束 0j %s
H
//int count = 0; -|\V'
//是否结束while循环 ;+'x_'a
boolean breakWhile = false; c~3OK_k
V2Q2(yvdJ
sWX iY
while(!bStop) ]R32dI8N
{ "-C.gqoB
write_nPos(); \L>3E#R-Q
Utility.sleep(500); RZ#b)l
breakWhile = true; 5<wIJ5t
1//d68*"
F.i*'x0u
for(int i=0;i<nStartPos.length;i++) ~2@+#1[g8z
{ LX[<Wh_X(
if(!fileSplitterFetch.bDownOver) @;_xFL;{g
{ K'kWL[Ut!
breakWhile = false; .:A9*,
break; 8C7$8x]mM
} -`sK?*[{J
} :V*c9,>ZO
if(breakWhile) wa-#C,R\_#
break; sgu#`@o
HJ?p,V q5_
9gVu:o 1/
//count++; v^1_'PAXu
//if(count>4) k%YvJ XL
// siteStop(); ShbW[*5
} V]dzKNFi
lK;|ciq"c7
?9'Ukw`
g
System.err.println("文件下载结束!"); Xb6X'rY
} }K1v=k
catch(Exception e){e.printStackTrace ();} ad+@2-Y
} P /|2s
J5e
hg[ob+"
//获得文件长度 %"B+;{y(5
public long getFileSize() L9ECF;)
{ MKzIY:ug
int nFileLength = -1; O
W`yv
try{ M6l S2
URL url = new URL(siteInfoBean.getSSiteURL()); J:LwO
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); d|#sgGM<8
httpConnection.setRequestProperty("User-Agent","NetFox"); 6yH(u}!.
04g=bJ
+AkAMZ"Mg
int responseCode=httpConnection.getResponseCode(); q;a"M7
if(responseCode>=400) YaU)66=u
{ Ox9WH4E
processErrorCode(responseCode); l&}3M
return -2; //-2 represent access is error +LFh}-X{_
} NrA?^F
zV {_dO
'qel3Fs"
String sHeader; t M?3oO
<*k]Aa3y
uU_lC5A|
for(int i=1;;i++) ;%wQnhg
{ *%'nlAX6%
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); KYBoGCS >
//Utility.log(in.readLine()); 3"afrA
sHeader=httpConnection.getHeaderFieldKey(i); d h5%
if(sHeader!=null) /`$9H|
{ q$IgkL
if(sHeader.equals("Content-Length")) Jd#g"a>zZ
{ "g}m xPe
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); x[L/d"Wf
break; >F7v'-*{
} vU|=" #
} ]$7dkP
else 4:m/w!q$
break; d0ZbusHHb
} 4'EC(NR7N
} kq+`.
catch(IOException e){e.printStackTrace ();} 2smQD8t
catch(Exception e){e.printStackTrace ();} k6.<