/* bkRLC_/d
**SiteFileFetch.java +20G>y=+
*/ QemyCCP+
package NetFox; j*d
yp
import java.io.*; :{{F *FM;
import java.net.*; 97Lte5c6r
rr/B=O7
XWnVgY s
public class SiteFileFetch extends Thread { 5CuuG<0
X3(tuqmi
a,Sw4yJ!Q
SiteInfoBean siteInfoBean = null; //文件信息Bean =NpYFKmMhV
long[] nStartPos; //开始位置 FW.7'7G@n
long[] nEndPos; //结束位置 z Eq GD2"
FileSplitterFetch[] fileSplitterFetch; //子线程对象 57aXQ8u{
long nFileLength; //文件长度 K)6rY(x
>
boolean bFirst = true; //是否第一次取文件 :X"?kK0 V
boolean bStop = false; //停止标志 v0ujdp,B
File tmpFile; //文件下载的临时信息 vx\r!]
DataOutputStream output; //输出到文件的输出流 ih)zG
$Y;U[_l#
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) v/@^Q1G/:
public SiteFileFetch(SiteInfoBean bean) throws IOException y>:N{|
{ 1}S S+>`
siteInfoBean = bean; rUwZMli
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); bw(a6qKK
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 'QJ:`)z
if(tmpFile.exists ()) 90Pl$#cb2
{ dMPc:tJT
bFirst = false; c>,KZ!
read_nPos(); 9 *xR6
} H-WJp<_
else !]42^?GH
{ &\#sI9
nStartPos = new long[bean.getNSplitter()]; 1Rq,a
nEndPos = new long[bean.getNSplitter()]; B|Du@^$
} fJ5iS
i3dkYevs?
<qtr
Wfu(*
} ^pxX]G]
7X`l&7IXP
bW$,?8(
public void run() )}g(b=
{ *RDn0d[
//获得文件长度 2SD`OABf#
//分割文件 Ut*`:]la
//实例FileSplitterFetch tankR9(o
//启动FileSplitterFetch线程 [O$Wa:< 0x
//等待子线程返回 VdPtPq1
try{ ?OId\'q
if(bFirst) \?w2a$?6w
{ !6n_}I-W
nFileLength = getFileSize(); l#m#c6;=
if(nFileLength == -1) vV6<^W:9F
{ Sw:7pByjI
System.err.println("File Length is not known!"); &[_g6OL
} Jk&3%^P{m
else if(nFileLength == -2) neB\q[k
{ 6q*9[<8
System.err.println("File is not access!"); ;i8g41qjF
} . kQkC:~9
else M*y)6H k~
{ ^({})T0wu
for(int i=0;i<nStartPos.length;i++) %u? >#
{ 3e
#p@sB
nStartPos = (long)(i*(nFileLength/nStartPos.length)); +:8fC$vVfC
} -mAUo;O
for(int i=0;i<nEndPos.length-1;i++) Q8C_9r/:N>
{ WM
Fb4SUR
nEndPos = nStartPos[i+1]; C`K?7v3$m
} nv GF2(;l
nEndPos[nEndPos.length-1] = nFileLength; 4<9=5 q]
} BYpG
} _?<|{O
7zA'ri3w
jDKO}
bQ
//启动子线程 5BWH-2HsB
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; >5_2_Y$"
for(int i=0;i<nStartPos.length;i++) "/)#O~
{ Diy8gt
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2!0c4a^z
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ;ZH3{
nStartPos,nEndPos,i); yaD~1"GA'O
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,C
K{F
fileSplitterFetch.start(); Ed"h16j?z
} e63uLWDT
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4h~iPn'Wl
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); +$u$<z3Q
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", g@rb
nEndPos = " + nFileLength); VkvB<3
// fileSplitterFetch[nPos.length-1].start(); E4xj?m^(y=
|P[w==AAf
4F)-"ck
//等待子线程结束 .)RzT9sg
//int count = 0; vo`2\R.
//是否结束while循环
05z,b]>l
boolean breakWhile = false; kr+D,h01
6tB+J F
E;,u2[3
while(!bStop) Ci?Ss+|
{ t|a2;aq_
write_nPos(); 8u"!dq
Utility.sleep(500); Vc_'hz]Z
breakWhile = true; T~--92[
R(('/J C
1s%#$ 7
for(int i=0;i<nStartPos.length;i++) {K <iih
{ jB`,u|FG
if(!fileSplitterFetch.bDownOver) `rgn<I"
{ RzBF~2 >i
breakWhile = false; _XG/Pp)
break; XDsx3Ws
} esHg'8?U
} U@g4w!$r
if(breakWhile) )+l\w3^6
break; nKS7Q1+
B{|8#jqY
o1Ph~|s*8
//count++; l H#u
//if(count>4) |L-]fjBbF
// siteStop(); K17j$o^6KK
} h^?\xm|
{ WIJC',Y
g>Y|9Y
System.err.println("文件下载结束!"); UADFnwR[R
} IT(lF
catch(Exception e){e.printStackTrace ();} Rd2qe /
} #,,d>e
[ad@*KFxy3
U[SaY0Z
//获得文件长度 I`p+Qt
public long getFileSize() C3eR)Yh
{ Inn@2$m~
int nFileLength = -1; txW{7[w+,
try{ Q?e*4ba
URL url = new URL(siteInfoBean.getSSiteURL()); QOjqQfmM;
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); qLw{?sH}J/
httpConnection.setRequestProperty("User-Agent","NetFox"); #i@;J]x(
gGr^@=;YC
|k+8<\
int responseCode=httpConnection.getResponseCode(); ?,p;O
if(responseCode>=400) +,2:g}5
{ plUZ"Tr
processErrorCode(responseCode); RMK"o?
return -2; //-2 represent access is error eb.O#Y
} 3x5JFM
[baiH|5>
!+1<E*NQ S
String sHeader; uZc`jNc\
.l>77zM6
#z&&M"*a|
for(int i=1;;i++) '>&^zgr
{ } ~h3c|
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); M*z~gOZ
//Utility.log(in.readLine()); U@gn;@\
sHeader=httpConnection.getHeaderFieldKey(i); d\p,2
if(sHeader!=null) #N#'5w-G
{ FuVnk~gq
if(sHeader.equals("Content-Length")) .$Ik`[+Z
{ (&}i`}v_
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ,a gc
break; qDv93
} 9F4Dm*_<
} <\Eh1[F
else 'ixwD^x
break; {XNREjhm
} )f}YW/'
} R<[qGt|L
catch(IOException e){e.printStackTrace ();} :A1{ d?B
catch(Exception e){e.printStackTrace ();} Qy.w=80kf
"5-^l.CKH
V^JV4 `o
Utility.log(nFileLength); N
F2/B#q
S'A>2>
(5R?#vj
return nFileLength; 1y-y6q
} /4c\K-Z;
Jd%H2`
Fz1_w$^
//保存下载信息(文件指针位置)
f#?fxUH~
private void write_nPos() h!&prYx
{ 94+KdHAo^M
try{ wT `a3Ymm
output = new DataOutputStream(new FileOutputStream(tmpFile)); Q7R~{5r>W
output.writeInt(nStartPos.length); ZT,B(#m
for(int i=0;i<nStartPos.length;i++) T?
tG~
{ j:k[90
// output.writeLong(nPos); '`eO\huf
output.writeLong(fileSplitterFetch.nStartPos); KMU4n-s"o
output.writeLong(fileSplitterFetch.nEndPos); I2 j}Am
} 4G$|Rx[{,
output.close();
l7W 6qNB
} <1FC%f/
catch(IOException e){e.printStackTrace ();} E0u~i59Z
catch(Exception e){e.printStackTrace ();} D[^m{ 9_
} 5!l0zLQPo
_{r=.W+w
@c<3b2
//读取保存的下载信息(文件指针位置) LUuZ9$t0J"
private void read_nPos() J13>i7]L%
{ hJDi7P
try{ :Qumb
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); >iD )eB
int nCount = input.readInt(); pV20oSJNt
nStartPos = new long[nCount]; T'4z=Z]w
nEndPos = new long[nCount]; zY,r9<I8_x
for(int i=0;i<nStartPos.length;i++) )6+eNsxMlC
{ _C(m<n
nStartPos = input.readLong(); c}y [[EX
nEndPos = input.readLong(); !X"K=zt"
} <(-3_s6-
input.close(); !OA]s%u
} Q.]}]QE
catch(IOException e){e.printStackTrace ();} c8L~S/t
catch(Exception e){e.printStackTrace ();} %7"X(Ts7B
} cJ1#ge%4
31rx-D8o
wm)#[x #
private void processErrorCode(int nErrorCode) bKrhIU[
{ D+]a.& {p
System.err.println("Error Code : " + nErrorCode); cgm81+[%r
} Fb7#<h
TQx.KM>y
IG|X!l
//停止文件下载 Au4yBm
u
public void siteStop() r41\r,`Dj
{ pcT:]d[1)
bStop = true; `t_W2y
for(int i=0;i<nStartPos.length;i++) ,!dh2xNH^
fileSplitterFetch.splitterStop(); j:E<p_T
KnsT\>[K
J(c{y]` J
} YN`H
BFH
} A-4h
//负责部分文件的抓取 J.ck~;3
**FileSplitterFetch.java _Y8hb!#(
*/ ^@qvl%j
package NetFox; Y}uCP1v
\|E^v6E%0
TiYnc3Bz}J
import java.io.*; 7b<je=G6PA
import java.net.*; ai
nG6Y<O`
=|I>G?g-
|lJX 3
public class FileSplitterFetch extends Thread { \>CYC|
@6mBqcE'?
'Y56+P\u
String sURL; //File URL xZ4~Oo@@_'
long nStartPos; //File Snippet Start Position Z00+!Tnd
long nEndPos; //File Snippet End Position P?t"jKp'
int nThreadID; //Thread's ID qIY~dQ|
boolean bDownOver = false; //Downing is over =!`j7#:
boolean bStop = false; //Stop identical h\nI!{A0
FileAccessI fileAccessI = null; //File Access interface NGOqy+Ty{f
\hhmVt@@
]3g?hM6
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException E I:w
aIr
{ PB#fP_0C
this.sURL = sURL; mml<9fbH
this.nStartPos = nStart; 6(G?MW.
this.nEndPos = nEnd; Gi "941zVl
nThreadID = id; <