/* lA>\Ko
**SiteFileFetch.java t?;T3k[RM
*/ %Qn(rA@9
package NetFox; "a1O01n
import java.io.*; Fb2%!0i
import java.net.*; _RMQy~&b
~
aZedQc
{TXOQ>gY
public class SiteFileFetch extends Thread { $#o1MX
mxrG)n6Y
vUQFQ
SiteInfoBean siteInfoBean = null; //文件信息Bean 7J >Gd
long[] nStartPos; //开始位置 (7lBID4
long[] nEndPos; //结束位置 l#3($QV,
FileSplitterFetch[] fileSplitterFetch; //子线程对象 s(ROgCO
long nFileLength; //文件长度 ETv9k g
boolean bFirst = true; //是否第一次取文件 oFg5aey4
boolean bStop = false; //停止标志 8U~.\`H-PT
File tmpFile; //文件下载的临时信息 yI:#
|w|
DataOutputStream output; //输出到文件的输出流 Q/_[--0
dAx96Og:X"
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ]pTvMom$6
public SiteFileFetch(SiteInfoBean bean) throws IOException #i QX6WF
{ crA:I"I
siteInfoBean = bean; QhGXBM
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); `ia %)@
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Bt^K]F\
if(tmpFile.exists ()) ~>ME'D~
{ %@&a7JOL
bFirst = false; OQ_stE2i
read_nPos(); jigs6#
} Iyk6=&?j
else { }e^eJ
{ !7H6i#g*
nStartPos = new long[bean.getNSplitter()]; zLjgCS<7
nEndPos = new long[bean.getNSplitter()]; g+q@i{Yn
} E|Bd>G
r$)$n&j
;##]G=%
lXrD!1F
} g: %9jf
"#^MUQ!a
Dxx;v .$
public void run() 7r{qJ7$%
{ kL{;.WsB
//获得文件长度 T)u4S[
&
//分割文件 s(@h 2:j
//实例FileSplitterFetch wV<7pi
//启动FileSplitterFetch线程 &R$Q\,
//等待子线程返回 _ P ,@
try{ ESQ!@G/n
if(bFirst) O?K./So&
{ sn\;bq
nFileLength = getFileSize(); o sdOw8
if(nFileLength == -1) tR`S#rk
{ = (U/CI
System.err.println("File Length is not known!"); K\=8eg93Z
} "|LQK0q3
else if(nFileLength == -2) Q49BU@xX
{ }*;EFR 6'
System.err.println("File is not access!"); :Am-8
} a4GWuozl
else [$:,-Q @
{ "h$R ]~eG
for(int i=0;i<nStartPos.length;i++) :=g.o;(/N
{ ?#[)C=p]z
nStartPos = (long)(i*(nFileLength/nStartPos.length)); c;!g
} W04av_u 5
for(int i=0;i<nEndPos.length-1;i++) P;foK)AM
{ i&ts YnP2
nEndPos = nStartPos[i+1]; NXoK@Y
} VK
.^v<Yo
nEndPos[nEndPos.length-1] = nFileLength; w-FnE}"l
} z4Oo@3$\R
} IlZu~B9c
IvU{Xm"qB
L4974E?S
//启动子线程 UOI^c
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; [STje8+V
for(int i=0;i<nStartPos.length;i++) L=A\ J^%
{ =3+L#P=i9
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), l:e9y $_)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \XH@b6{
nStartPos,nEndPos,i); VyZV(k
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); +t\^(SJ6
fileSplitterFetch.start(); XI}I.M
} mY2:m(9"5
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b :\D\X
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); v4<j
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Zw=G@4xoU
nEndPos = " + nFileLength); mx tgb$*
// fileSplitterFetch[nPos.length-1].start(); Lt<oi8'N
-{x(`9H;
3ut_Bt\
//等待子线程结束 WM< \e
//int count = 0; G.jQX'%4QG
//是否结束while循环 t[O+B6
boolean breakWhile = false; {g=b]yg\o
,?=KgG1i
z-Hkz
while(!bStop) (&Q)EBdm
{ H1UL.g%d=
write_nPos(); HWtPLlNt
Utility.sleep(500); !LSs9_w
breakWhile = true; Q_lu`F|
?[SVqj2-
./iXyta
for(int i=0;i<nStartPos.length;i++) BR3mAF
{ wixD\t59X
if(!fileSplitterFetch.bDownOver) rgR?wXW]jE
{ #eEvF
breakWhile = false; g~R/3cm4
break; [t}):}~F|
} 2]Fu
1
} GVp
if(breakWhile) hmzair3X
break; q!*MH/R
c,BAa*]K
j;0ih_Z@4W
//count++; i+U51t<
//if(count>4) !$E~\uT
// siteStop(); |0w~P
s
} mVrK z
cju@W] !
32KR--mn%
System.err.println("文件下载结束!"); PJwEA
} .HD ebi
catch(Exception e){e.printStackTrace ();} a(Sv,@/
} d<Dn9,G
Lw*1 .~
.HOY q
//获得文件长度 BD4"pcr
public long getFileSize() /$*; >4=>f
{ 0~i q G
int nFileLength = -1; TQ~&Y)".
try{ ,lP7 ri
URL url = new URL(siteInfoBean.getSSiteURL()); #Y: ~UVV
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Ph"iX'J
httpConnection.setRequestProperty("User-Agent","NetFox"); 3:O+GQ*
vK'9{q|g
;_bq9x
int responseCode=httpConnection.getResponseCode(); yTj p-
if(responseCode>=400) C zpsqTQ
{ B%(K0`G#X
processErrorCode(responseCode); }!knU3J
return -2; //-2 represent access is error 0$?qoS
} V%o#AfMI_
{6Y xN&
-_w~JCx
String sHeader; <tU
:U<ea]
yHtGp%j
A ')(SGSc
for(int i=1;;i++) [BE:+ ID3
{ =_pmy>_z
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); K9}jR@jy$
//Utility.log(in.readLine()); 2}|vWKej{
sHeader=httpConnection.getHeaderFieldKey(i); B~BUWWMfp
if(sHeader!=null) W=M<
c@
{ <EOg,"F
if(sHeader.equals("Content-Length")) M +\rX1T
{ iPNd!_
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); zo87^y5?G
break; WY3_7k8u
} UzN8G$92qF
} DZF[dxH
else e ^-3etx
break; u`nt\OF
} W3aXW,P. V
} a?l_-Fi
catch(IOException e){e.printStackTrace ();} ;q'DGzh
catch(Exception e){e.printStackTrace ();} y K=S!7p\
C!`>cUhE{
c;nx59w]q
Utility.log(nFileLength); EGr|BLl
i<0D
Z_rub
o<~-k,{5P
return nFileLength; m*OLoZVy
} "@aq@mY@
,WzG.3^m
`s#sE.=o
//保存下载信息(文件指针位置) ]9dx3<2_I
private void write_nPos() t4C<#nfo
{ vRq=m8
try{ [`cdlx?Eh
output = new DataOutputStream(new FileOutputStream(tmpFile)); fc["
output.writeInt(nStartPos.length); #R5we3&p
for(int i=0;i<nStartPos.length;i++) ttTI#Fr2
{ `\nON
// output.writeLong(nPos); 6zELe.tq
output.writeLong(fileSplitterFetch.nStartPos); b"`ru~]
output.writeLong(fileSplitterFetch.nEndPos); \=$EmHF
} zK[
7:<
output.close(); 5/zf
x
} Cca~Cq[%*(
catch(IOException e){e.printStackTrace ();} ;*n_N!v
catch(Exception e){e.printStackTrace ();} pE~9o 9
} [BJ$|[11
rDK;6H:u{
$:T<IU[E
//读取保存的下载信息(文件指针位置) *vRNG 3D/
private void read_nPos() XPGL3[w\V
{ 0EcC
try{ t$ACQ*O
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); tCd{G
c
int nCount = input.readInt(); 5@GD} oAn6
nStartPos = new long[nCount]; 3w[<cq.!
nEndPos = new long[nCount]; wpAw/-/
for(int i=0;i<nStartPos.length;i++) LuQ"E4;nY%
{ Xp<A@2wt?
nStartPos = input.readLong(); ~R"]LbeY
nEndPos = input.readLong(); :|*Gnu
} /8 e2dw:
\
input.close(); f)p>nW?Z
} Aqx3!
catch(IOException e){e.printStackTrace ();} }wa}hIqx
catch(Exception e){e.printStackTrace ();} fho=<|-
} tjBh$)
-lJx%9>
rTWh(8T
private void processErrorCode(int nErrorCode) YlZYS'_
{ !:]s M-cCt
System.err.println("Error Code : " + nErrorCode); >!:$@!6L
} 0BbiQXU
!$%/
rQ9
vB&F_"/X2
//停止文件下载 >C*?17\
public void siteStop() _"R3N
{ )x_W&