/* %l7[eZ{Y
**SiteFileFetch.java tY"eoPme
*/ 8zx]/>
package NetFox; %y6Q3@
import java.io.*; ?),b902C
import java.net.*; |Vpp'ipr
~qghw@Q~
7_\sx7h{3
public class SiteFileFetch extends Thread { -%`~3*L
<VxA&bb7c
aRMlE*yW
SiteInfoBean siteInfoBean = null; //文件信息Bean ^+m`mc sE
long[] nStartPos; //开始位置 *?X&Y8Kf
long[] nEndPos; //结束位置 XKjrS
9:
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ljy797{f
long nFileLength; //文件长度 *E/Bfp1LIe
boolean bFirst = true; //是否第一次取文件 [9">}l
boolean bStop = false; //停止标志 LIID(s!bX
File tmpFile; //文件下载的临时信息
~71U s
DataOutputStream output; //输出到文件的输出流 ;JkSZs3
Ce}`z
L
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =d{6=2Pt
public SiteFileFetch(SiteInfoBean bean) throws IOException 4zMvHe
{ [bh?p+V
siteInfoBean = bean; 40kAGs>_
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ?6:qAFw
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); sq'm)g
if(tmpFile.exists ()) kOQ)QX
{ I0}.!
bFirst = false; ukR0E4p
read_nPos(); XJ<"S
p
} \L*%?~
else _w\9
\<%
{ 6 eSo.@*l
nStartPos = new long[bean.getNSplitter()]; SxRJ{m~
nEndPos = new long[bean.getNSplitter()]; j[r}!;O
} -$Fj-pO\
J8:s=#5
C7%R2>}?f
HgQjw!
} !eyLh&]5
;73S;IPR
2)=whnFS
public void run() W> pe-
{ JqzoF}WH
//获得文件长度 rRe5Q
//分割文件 f-F=!^.
//实例FileSplitterFetch +fVv H
//启动FileSplitterFetch线程 {lds?AuK
//等待子线程返回 2w.FC
try{ #kW=|8X
if(bFirst) +M=h+3hw](
{ {>ba7-Cy+y
nFileLength = getFileSize(); }QI \K
if(nFileLength == -1) R{@saa5I(>
{ UdO8KD#r3
System.err.println("File Length is not known!"); SP%X@~d
} AIHH@z
else if(nFileLength == -2) [PIMG2"G
{ i<ES/U\
System.err.println("File is not access!"); UPfE\KN+p#
} `LkrG9KV{
else Dmh$@Uu#F
{ 1mmL`M1
for(int i=0;i<nStartPos.length;i++) eHgr"f*7
{ CF;Gy L1M
nStartPos = (long)(i*(nFileLength/nStartPos.length)); {I{ 0rV
} wiN0|h>,
for(int i=0;i<nEndPos.length-1;i++) >j?5?J"
{ )U\i7[k>
nEndPos = nStartPos[i+1]; ]ae(t`\l^
} !`{?qQ[=
nEndPos[nEndPos.length-1] = nFileLength; XVs]Y'*x
} &[d'g0pF
} p cLKE
ZK
31G:[;g
\lK?f] qJq
//启动子线程 L~&S<5?
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ,Q"'q0hM=
for(int i=0;i<nStartPos.length;i++) k[x-O?$O@
{ K&[0`sH!
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `:C1Wo^<
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), n5QO'Jr%[
nStartPos,nEndPos,i); Z|qI[ui O
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); li*S^uSF
fileSplitterFetch.start(); .B`$hxl*0c
} S|=)^$:
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?nc:bC
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =CQfs6np:N
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", =i)%AnZ^9
nEndPos = " + nFileLength); \92M\S
// fileSplitterFetch[nPos.length-1].start(); %B@NW2ZQ[
P`Zon
/g u
VA
//等待子线程结束 "(mJupI
//int count = 0; ;2kQ)Bq"
//是否结束while循环 2VV>?s
boolean breakWhile = false; (XOz_K6c%K
+C`!4v\n
1EV bGe%b
while(!bStop) v/ry" W
{ 7@{%S~TN
write_nPos(); phDIUhL$z
Utility.sleep(500); 1sXCu|\q
breakWhile = true; "==c
Xq1#rK(
IgbuMEfL
for(int i=0;i<nStartPos.length;i++) 'fn}I0Vc
{ t]&.'n,
if(!fileSplitterFetch.bDownOver) j)@W1I]2#
{ Ny"9!3V
breakWhile = false; l4RqQ+[KA;
break; X0j\nXk
} 8ve-g\C8 H
} v
o:KL%)
if(breakWhile) >"/TiQt
break; v J0v6\
s$(%]~P
S\Z*7j3;M
//count++; S[L@8z.Sj
//if(count>4) 4<s;xSCL
// siteStop(); \gP?uJ
} l
i<9nMZ<
0@_8JB ?E
$l,U)
System.err.println("文件下载结束!"); GIlaJ!/
} z"6o|]9I
catch(Exception e){e.printStackTrace ();} \0|x<~#j'
} HP*)^`6X
w(HVC
54z`KX
73
//获得文件长度 i<S\x
public long getFileSize() -(57C*#ap
{ g;Fdm5Q
int nFileLength = -1; /,:cbpHsu
try{ /%m?D o
URL url = new URL(siteInfoBean.getSSiteURL()); H'S~GP4D
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); m&A bH&;
httpConnection.setRequestProperty("User-Agent","NetFox"); Cnpl0rV~5
{ZUk!o>m@
-F`gRAr-
int responseCode=httpConnection.getResponseCode(); .x$V~t
if(responseCode>=400) E`N`
{ yMW3mx301j
processErrorCode(responseCode); -}@C9Ja[?
return -2; //-2 represent access is error O4-#)#-)S~
} xpa+R^D5G
q!&:y7O8
N_D=j6B
String sHeader; j &[lDlI_
kX V
e[k\VYj[
for(int i=1;;i++) u9;3Xn8
{ e|A=sCN-
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); a/E(GQ,,
//Utility.log(in.readLine()); CV|Ae [
sHeader=httpConnection.getHeaderFieldKey(i); ~a=]w#-KD
if(sHeader!=null) +
o< 7*
{ p!DdX
if(sHeader.equals("Content-Length")) o< b
{ djf8FNnn
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); fwtsr>SV
break; wOUCe#P|r
} ++2a xRl
} qw4wg9w5p
else UHY)+6qt]
break; 2;:]Q.g
} (QFZM"G
} i_L u
catch(IOException e){e.printStackTrace ();} Iv7BIK^0
catch(Exception e){e.printStackTrace ();} V13^SVM
(O ;R~Io
lN.&46
e
Utility.log(nFileLength); f:q2JgX
QdZHIgh`i
H{P*d=9v
return nFileLength; /L,iF?7
} %_]O|(
7OZ0;fK
TbMlYf]It
//保存下载信息(文件指针位置) +SV!QMIg
private void write_nPos() "`K73M,c?9
{ ;|rFP
try{ cmf*BkS
output = new DataOutputStream(new FileOutputStream(tmpFile)); O,@QGUoA
output.writeInt(nStartPos.length); F[ ^ p~u{
for(int i=0;i<nStartPos.length;i++) ,vi6<C\
{ (4l M3clF
// output.writeLong(nPos); bN*zx)f
output.writeLong(fileSplitterFetch.nStartPos); }2y"F@{T
output.writeLong(fileSplitterFetch.nEndPos); '&/Y}]
} 8QFRX'i
output.close(); 5;{*mJ:F
} Wi)N/^;n
catch(IOException e){e.printStackTrace ();} @)ozgs@e
catch(Exception e){e.printStackTrace ();} Wbmqf
s
} vO{[P#L}
1iY?t
k:s86q
//读取保存的下载信息(文件指针位置) -% B)+yq>
private void read_nPos() MoC/xF&
{ NnZ_x>R
try{ t I+]x]m+
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ^YPw'cZZ&
int nCount = input.readInt(); #$t93EI
nStartPos = new long[nCount]; ZCuh^
nEndPos = new long[nCount]; ng2yZ @$
for(int i=0;i<nStartPos.length;i++) 78z/D|{"
{ Se/]J<]
nStartPos = input.readLong(); M>Ws}Y
nEndPos = input.readLong(); BGB.SN#q+
} 9&c *%mm
input.close(); P>6wr\9i[
} >m9ge`!9
catch(IOException e){e.printStackTrace ();} %]DJ-7 xE
catch(Exception e){e.printStackTrace ();} UJX5}36
} tIX|oWC$q
Wm58[;%LTw
vP<8,XG
private void processErrorCode(int nErrorCode) \]/6>yT
{ $_Lcw"xO
System.err.println("Error Code : " + nErrorCode); \4q1<j
} fwyz|>H_Y(
j"+R*H(#
Yi"jj;!^S
//停止文件下载 9T;l*
public void siteStop() QEL3b4Vm
{ !P:~oo=
bStop = true; YKj PE
for(int i=0;i<nStartPos.length;i++) vn5]+-I
fileSplitterFetch.splitterStop(); ! F&{I
Q5v_^O<!
bF3}L=z
} o2(*5*b!@e
} o@\q 6xl.
//负责部分文件的抓取 mK7egAo
**FileSplitterFetch.java !Ys.KDL
*/ x: Tm4V{
package NetFox; u-Ip *1/wp
Qgv-QcI{
8J7<7Sx
import java.io.*; d 'wWj
import java.net.*; /?8rj3
|
\JB/x
UD r@
public class FileSplitterFetch extends Thread { Jqi^Z*PuX
Q,f5r%A.
r`'n3#O*
String sURL; //File URL 2:S
4M.j
long nStartPos; //File Snippet Start Position z+@Jx~<i
long nEndPos; //File Snippet End Position ~|)'vK8W
int nThreadID; //Thread's ID mm<rdo(`
boolean bDownOver = false; //Downing is over ?To r)>A'
boolean bStop = false; //Stop identical <N;HB&mr
FileAccessI fileAccessI = null; //File Access interface B1gBvss
RIl+QA
Y_&