/* s?fO)7ly
**SiteFileFetch.java V<:)bG4;d
*/ 3 #8bG(
package NetFox; 5^,"Ve|
import java.io.*; >@g+%K]
import java.net.*; I@$cw3
'7oWN,-
yHXQCWY{8;
public class SiteFileFetch extends Thread { n=z=%T6
Ft<6`C
cYC@@?
SiteInfoBean siteInfoBean = null; //文件信息Bean qG]G0|f
long[] nStartPos; //开始位置 \aEarIX#*
long[] nEndPos; //结束位置 AHo4%
5
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ?M}W;Z
long nFileLength; //文件长度 jkVX>*.|oy
boolean bFirst = true; //是否第一次取文件 K&Sz8# +
boolean bStop = false; //停止标志 Q7!";ol2
File tmpFile; //文件下载的临时信息 1}7Q2Ad w
DataOutputStream output; //输出到文件的输出流 8_d>=*(
dR9[K4`p/
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) m]7oTmS
public SiteFileFetch(SiteInfoBean bean) throws IOException n$*e(
{ L@|xpq
siteInfoBean = bean; #OQT@uF!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); fEWXC|"
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); j3Sz+kOf,
if(tmpFile.exists ()) 0SHF 8kek
{ z]twh&^1L
bFirst = false; j>}<FW-N
read_nPos(); 6h5,XcO4
} 0b)q,]l]
else {:63% j
{ iI]E%H}
nStartPos = new long[bean.getNSplitter()]; I+!?~]AUuq
nEndPos = new long[bean.getNSplitter()]; @VzD>?)
} N!{waPbPi
,\DSi&T
!,(6uO%
8mmHefZ}2!
} yUyx&Y/
WZ A8D0[
[X\<C '<
public void run() ~+~^c|
{ )B!64'|M
//获得文件长度 F?!X<N{
//分割文件 1.U9EuI
//实例FileSplitterFetch 1v?|n8
//启动FileSplitterFetch线程 @ptE&m
//等待子线程返回 S^,q{x*T
try{ &gr)U3w
if(bFirst) O>M4%p
{ #~I.F4
nFileLength = getFileSize(); 'QP~uK
if(nFileLength == -1) aANzL
{ !&f>,?wlP
System.err.println("File Length is not known!"); (2l?~CaK
} @hG]Gs[,o
else if(nFileLength == -2) OsGKlWM/
{ `{B<|W$=
System.err.println("File is not access!"); W]-c`32~S
} vJ a?5Jr
else *#| lhf'
{ VGVb3@
for(int i=0;i<nStartPos.length;i++) ImG7E
w
{ jgyXb5GY
nStartPos = (long)(i*(nFileLength/nStartPos.length)); skeXsls
} H!81Pq~
for(int i=0;i<nEndPos.length-1;i++) V49[XX
{ c+bOp
05o-
nEndPos = nStartPos[i+1]; 6a%dq"5 +
} FRR`<do5$,
nEndPos[nEndPos.length-1] = nFileLength; {
ML)F ]]
} }u
`~lw(Z
} ;+Mee^E>!
%
k}+t3aF
'ZXd|WI
//启动子线程 )_H>d<di
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -Z<V?SFOK
for(int i=0;i<nStartPos.length;i++) q
qFN4AO
{ Q$B\)9`v[
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ? JliKFD%
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), T:G8xI1
P
nStartPos,nEndPos,i); 3yXSv1
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); sq;nUA=
fileSplitterFetch.start(); 4r-CF#o
} .1@8rVp7
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), TEEt]R-y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ndE" v"_H
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", LV6BSQyQ
nEndPos = " + nFileLength); #FwTV@
// fileSplitterFetch[nPos.length-1].start(); h)o5j-M>4
G,,7.%eib=
a?NoNv)&
//等待子线程结束 =kiDW6
JJU
//int count = 0; ./r#\X)dc
//是否结束while循环 _]"uq/UWp
boolean breakWhile = false; ?Dn
6
k "Qr
j3$\+<m]
while(!bStop) Ae3=o8p
{ Pg%k>~i
write_nPos(); 3$#=*Zp
Utility.sleep(500); +j!$88%Z{
breakWhile = true; $Ao
iH{f
yM`QVO!;
e'MLLC[
for(int i=0;i<nStartPos.length;i++) OY'6 ~w9
{ tg#d.(
if(!fileSplitterFetch.bDownOver) Y3M"a8 e'
{ 9'I$8Su
breakWhile = false; RkTO5XO
break; MWHzrqCA
} ZhnRsn9
} FrL
;1zt
if(breakWhile) F*{1, gb
break; mO0a: i!
%;-r->
L`@)*x)~R
//count++; !IAd.<,
//if(count>4) yGZsPQIaV
// siteStop(); p/4}SU
} Q?WgGE4>
ELa:yIl0
'ngx\Lr
System.err.println("文件下载结束!"); 7a5G,C#QQ
} _fmOTz G
catch(Exception e){e.printStackTrace ();} b8~7C4
} \ x>#bql+
{+@M!
/`H{n$
//获得文件长度 G}NT[
public long getFileSize() bQBYzvd
{ yh{Wuz=T
int nFileLength = -1; 3+tr_psH
try{ m`B.3
URL url = new URL(siteInfoBean.getSSiteURL()); US2Tdmy@05
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &?(472<f**
httpConnection.setRequestProperty("User-Agent","NetFox"); daN#6e4Z+;
nX\Q{R2
biy[h3b
int responseCode=httpConnection.getResponseCode(); N3SB-E+
if(responseCode>=400) F2WMts
{ i8 fUzg)
processErrorCode(responseCode); +~l`rJ
return -2; //-2 represent access is error @(I)]Ca%O
} snti*e4"V
Ua\<oD79]
yIG*
String sHeader; 0OF ]|hH
nA 5-P}
LAcK%
for(int i=1;;i++) OdHl)"#
{ MB3 0.V/\
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,?(IRiq%
//Utility.log(in.readLine()); Wt $q{g{C
sHeader=httpConnection.getHeaderFieldKey(i); %o4HCzId<
if(sHeader!=null) \L4+Dv<z
{ /aX#j`PrH
if(sHeader.equals("Content-Length")) |\] _u 3
{ vm4q1!!(
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /Zm5fw9
break; `@#,5S$ E
} q+ )csgN
} UukHz}(E
else ~RIn7/A
break; 1EcXvT=
} C$#X6Q!,
} [>xGynU0
catch(IOException e){e.printStackTrace ();} M%@=BT
catch(Exception e){e.printStackTrace ();} ]YqeI*BX
[bZASeh
:^*9Eb
Utility.log(nFileLength); M-+pYv#&P
~vv\A5O[|
QJKVNOo
return nFileLength; mvrg!/0w
} -Ka0B={Z
dd|/I1
T*ir Ce
//保存下载信息(文件指针位置) w$)E#|i
private void write_nPos() 6z>Zm1h
{ ?~fuMy B
try{ hY^-kdQ>M
output = new DataOutputStream(new FileOutputStream(tmpFile)); {nyVC%@Y
output.writeInt(nStartPos.length); E])X$:P?
for(int i=0;i<nStartPos.length;i++) dX>l"))yR
{ tW7*(D
// output.writeLong(nPos); {nl4(2$
output.writeLong(fileSplitterFetch.nStartPos); =`y.L5
output.writeLong(fileSplitterFetch.nEndPos); RBM(>lU:
} G>H',iOI
output.close(); Kl)PF),
} "J(7fL$!
catch(IOException e){e.printStackTrace ();} T.R(
catch(Exception e){e.printStackTrace ();} hp6%zUR
} wU =@,K
2 bQC2
{S;/+X,
//读取保存的下载信息(文件指针位置) }iF"&b0n"
private void read_nPos() \/
8
V|E
{ Gkq<?q({t
try{ d}e/f)(
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |e#ea~/b
int nCount = input.readInt(); a}]zwV&
nStartPos = new long[nCount]; \JX.)&>
-
nEndPos = new long[nCount]; I_/kJ#7vj
for(int i=0;i<nStartPos.length;i++) #6 yi
{ {2,OK=XM|
nStartPos = input.readLong(); a|\ZC\(xI
nEndPos = input.readLong(); p"XQJUuD
} .Lc<1s
input.close(); i'}Z>g5D
} ?a]uyw,
catch(IOException e){e.printStackTrace ();} !`-/E']/
catch(Exception e){e.printStackTrace ();} MX.=k>
} !Qd4Y=
lY_&P.B
V$7SVq
private void processErrorCode(int nErrorCode) TtaVvaz~>
{ {V)Z!D
System.err.println("Error Code : " + nErrorCode); ctg[C$<q|
} pdQ6/vh
.sk$ @Q
5I(gP
//停止文件下载 TXlxnB
public void siteStop() Uhz<B #tj
{ P{!r<N
bStop = true; 7k>sE
for(int i=0;i<nStartPos.length;i++) ou[_ y
fileSplitterFetch.splitterStop(); <r%QaQRbm
b-x,`s
+R_w- NI
} ^KsiTVY
} fy`e)?46
//负责部分文件的抓取 ,.ln
**FileSplitterFetch.java (|PxR#{l<
*/ qq+fUfB2:
package NetFox; 3B<$6
#sq$i
_=.f+1W
import java.io.*; 3Hli^9&OX_
import java.net.*; >|[74#}7
MOIH%lpe
`<C/-Au
public class FileSplitterFetch extends Thread { Y M_\ ZK:
i-b++R/WN
7xOrG],E
String sURL; //File URL 'RlPj0Cg
long nStartPos; //File Snippet Start Position JKkR963 O
long nEndPos; //File Snippet End Position P*#H]Pv
int nThreadID; //Thread's ID yBPaGZ{f
boolean bDownOver = false; //Downing is over `.FvuwP
boolean bStop = false; //Stop identical P"<