/* Wcc4/:`Hu
**SiteFileFetch.java CR23$<FC
*/ L3HC-
package NetFox; y+k^CT/u
import java.io.*; P<Bx1H-z-
import java.net.*; O>+=cg
UFT JobU
7'esJ)2
public class SiteFileFetch extends Thread { k
L6s49
"[P3b"=gW
`1P|<VbZ
SiteInfoBean siteInfoBean = null; //文件信息Bean (_4DZMf
long[] nStartPos; //开始位置 C{m%]jKH
long[] nEndPos; //结束位置 [u!n=ev
FileSplitterFetch[] fileSplitterFetch; //子线程对象 {|>Wwa2e
long nFileLength; //文件长度 XQn1B3k+
boolean bFirst = true; //是否第一次取文件 N,K/Ya)1
boolean bStop = false; //停止标志 \8$~ i
File tmpFile; //文件下载的临时信息 ;PC!
DataOutputStream output; //输出到文件的输出流 "P#1=
Dfzj/spFV
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) J)n_u) ,
public SiteFileFetch(SiteInfoBean bean) throws IOException UJh;Hp:
{ BVeMV4
siteInfoBean = bean; `dcz9 *
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }R16WY_'
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;6``t+]q
if(tmpFile.exists ()) /;(ji?wN
{ Ur]$@N
bFirst = false; #0T/^ #
read_nPos(); FHU6o910
} L~t<
0\r
else [5~mP`He
{ ";=!PL
nStartPos = new long[bean.getNSplitter()]; DqQp47kp
nEndPos = new long[bean.getNSplitter()]; _rB,N#{2R=
} -->0e{y
;<Z6Y3>I8
H}kSXKO8!8
MuOKauYa
} 3%?tUt
tXtNK2-1
8O]`3oa>
public void run() z
mip
{ 4zS0kk;+
//获得文件长度 ^K"BQ~-w
//分割文件 $O*@Jg=
//实例FileSplitterFetch cg3}33Z;6
//启动FileSplitterFetch线程 $2h%IK>#G
//等待子线程返回 }ww/e\|Nt=
try{ Bz_'>6w
if(bFirst) zsJ# CDm
{ p"
>*WQ
nFileLength = getFileSize(); "."(<c/3
if(nFileLength == -1) 0)Ephsw
{ !Nx1I
System.err.println("File Length is not known!"); SC~k4&xy
} HQ-++;Q
else if(nFileLength == -2) ecs 0iW-,
{ +`GtZnt#
System.err.println("File is not access!"); ,9bnR;f\
} %\<b{x# G
else kd^H}k
{ B ktRA
for(int i=0;i<nStartPos.length;i++) SdYf^@%}F
{ ]7Vg9&1`
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ;9OhK71}
} TC/c5:)]
for(int i=0;i<nEndPos.length-1;i++) A_9^S!
{ ]S&ki}i&
nEndPos = nStartPos[i+1]; Su,:f_If,
} -sQ[f18
nEndPos[nEndPos.length-1] = nFileLength; *"w hup[
} 4l
ZK@3
} 0i_:J
klJ21j0Bb2
;B=aK"\
//启动子线程 ia'z9
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Q"qI'*Kgt
for(int i=0;i<nStartPos.length;i++) viAAb
{ yV8J-YdsG
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L_!ShE
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), oVy{~D=
nStartPos,nEndPos,i); FoK2h!_
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); '3672wF/
fileSplitterFetch.start(); V+Tv:a
} j-ej7
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), NV4g5)D&L
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); tsc`u>
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", >l&]Ho
nEndPos = " + nFileLength); Y'|,vG
// fileSplitterFetch[nPos.length-1].start(); y+ze`pL?
EpAgKzVpJ
Z71m(//*}
//等待子线程结束 e7U\gtZ.
//int count = 0; {zAI-?#*u
//是否结束while循环 u)0I$Tc"
boolean breakWhile = false; _h!.gZB3
7l69SQo]?
sWYnoRxu
while(!bStop) TsTc3
{ b4_0XmL
write_nPos(); |[>@Kk4
Utility.sleep(500); \2s`mCY
breakWhile = true; [Iks8ZWr_
"OjAhKfG
*XTd9E^tXq
for(int i=0;i<nStartPos.length;i++) tVn?cS
{ |EE1S{!24m
if(!fileSplitterFetch.bDownOver) 6^Wep- $
{ &|>~7(
breakWhile = false; GF ux?8A:%
break; |HK:\)L%
} ZUQ
_u
} 4 ThFC
if(breakWhile) ~w>h#{RB
break; 1Nt
&+o
K29/7A/
EG>?>K_D
//count++; !?>V^#c
//if(count>4) }S/i3$F0~
// siteStop(); "Q.*
} |ri)-Bk
,
@oA z
]1!" q40)]
System.err.println("文件下载结束!"); 3%Y:+%VE
} >7>I1
catch(Exception e){e.printStackTrace ();} y+(\:;y$7
} k]@]a
A;TP~xq\
Nwi|>'\C
//获得文件长度 yn62NyK
public long getFileSize()
lgOAc,
{
_>-
D*l
int nFileLength = -1; (9'^T.J
try{ 7{|QkTg C
URL url = new URL(siteInfoBean.getSSiteURL()); -* ,CMw
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); nYyhQX~]B
httpConnection.setRequestProperty("User-Agent","NetFox"); @RoZd?
^LMgOA(7
/5ZX6YkeH
int responseCode=httpConnection.getResponseCode(); USBQEt
if(responseCode>=400) TLdlPBnr8
{ ote,`h
processErrorCode(responseCode); Wgwd?@uK
return -2; //-2 represent access is error =01X
} kU<t~+
c$g@3gL
tq3_az ~1
String sHeader; W7>2&$
+<7Oj s>o
>d/H4;8
for(int i=1;;i++) Gnkar[oa&
{ .Nn11F< d
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 3z+l-QO8
//Utility.log(in.readLine()); 6CY&pbR
sHeader=httpConnection.getHeaderFieldKey(i); %=aKW[uq]
if(sHeader!=null) XIW0Z C
{ {D+mr[ %
if(sHeader.equals("Content-Length")) oh9
;_~
{ ?E([Nc0T
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); P\jGySj
break; JVE\{ e)
} _wq?Pa<)e
} " 9Gn/-V>
else <S@jf4
break; :?t~|7O:
} 2c9?,Le/;
} Gt`7i(
catch(IOException e){e.printStackTrace ();} }s}g}t8v-
catch(Exception e){e.printStackTrace ();} <)VgGjZ-H
/at7H!
tb3VqFx
Utility.log(nFileLength); y0 * rY
d!,t_jM0
PMzPj,
return nFileLength; (`tRJWbdz
} :L[>!~YG_n
L44m!%q
I.<c{4K5
//保存下载信息(文件指针位置) 2{OR#v~
private void write_nPos() P6:C/B
{ /).{h'^Hq\
try{ )kD/ 8
output = new DataOutputStream(new FileOutputStream(tmpFile)); CKsVs.:u
output.writeInt(nStartPos.length); -pC8 L<
for(int i=0;i<nStartPos.length;i++) h@:K=ggK
{ Zj`WRH4
// output.writeLong(nPos); :KLXrr
output.writeLong(fileSplitterFetch.nStartPos); xA] L0h]
output.writeLong(fileSplitterFetch.nEndPos); ]?Ef0?44
} &gXh:.
output.close(); 4QL>LK
} f[ ^f/jGm
catch(IOException e){e.printStackTrace ();} K+B978XD
catch(Exception e){e.printStackTrace ();} %Sr+D{B
} 7},A.q
=CX1jrLZ
)BP*|URc
//读取保存的下载信息(文件指针位置) K@D\5s|1|
private void read_nPos() zsFzg.$3&
{ \/a6h
try{ 6
63o
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); T{YZ`[
int nCount = input.readInt(); J$dwy$n
nStartPos = new long[nCount]; D Ez,u^
nEndPos = new long[nCount]; 25^?|9o 7
for(int i=0;i<nStartPos.length;i++) bF'rK'',
{ -fR:W{u
nStartPos = input.readLong(); >| R'dF}
nEndPos = input.readLong(); Wa_qD
} YGp+[|'
input.close(); tK#R`AQ
} K5""%O+
catch(IOException e){e.printStackTrace ();} :{lwz#9V
catch(Exception e){e.printStackTrace ();} JfY*#({y
} ZCiCZ)oc
\8`?ir
q"
<xOv8IQ|
private void processErrorCode(int nErrorCode) wQkM:=t5
{ vvoxK 0
System.err.println("Error Code : " + nErrorCode); GD
W@/oQr
} N##`
_73q,3`24
,"(L2+Yp
//停止文件下载 MK$u}G
public void siteStop() 'M90Yia
{ sp9gz~Kq
bStop = true; J=4>zQLW
for(int i=0;i<nStartPos.length;i++) PNU(;&2<
fileSplitterFetch.splitterStop(); E-e(K8R
U84W(X
=YO ]m<
} 5j%G7.S\
} 6 SSDc/
//负责部分文件的抓取 \l%xuT
**FileSplitterFetch.java ny={OhP-
*/ 6*OL.~WE
package NetFox; NkE0S`Xf
wT1s;2 %
2G8pDvBr
import java.io.*; e~'`x38
import java.net.*; `?Rq44=
U$rMZk
Yo-}uTkw
public class FileSplitterFetch extends Thread { H=t"qEp
]S|FK>U[
Xlo7enzY
String sURL; //File URL wb-yAQ8
long nStartPos; //File Snippet Start Position 7*/{m K)
long nEndPos; //File Snippet End Position 5=dL`
int nThreadID; //Thread's ID B5e9'X^
[
boolean bDownOver = false; //Downing is over K|& f5w
boolean bStop = false; //Stop identical zmMc*|
FileAccessI fileAccessI = null; //File Access interface ?GhyVXS y.
8~sP{V%
)8Va%{j
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 9
_d2u#
{ }x8!{Y#cF
this.sURL = sURL; +Y\:Q<eMFg
this.nStartPos = nStart; md!6@)S-p
this.nEndPos = nEnd; _GOSqu!3Y
nThreadID = id; J
3!~e+wn
fileAccessI = new FileAccessI(sName,nStartPos);//定位 H'+7z-%G
} {4"V)9o-1>
:5d>^6eoB?
S{YzHK
public void run() u8e_Lqx?
{ jm_-f
while(nStartPos < nEndPos && !bStop) )P$(]{
{ *bkb-nKw
N<EVs.7
+)]YvZ6%[,
try{ $YYWpeW
'
URL url = new URL(sURL); <hT\xBb:
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^;C&
httpConnection.setRequestProperty("User-Agent","NetFox"); g 7oY 1;
String sProperty = "bytes="+nStartPos+"-"; WJ7|0qb
httpConnection.setRequestProperty("RANGE",sProperty); '<Z[e`/
Utility.log(sProperty); ^0VL](bD>
?KT{H(rU
R1jl <=
InputStream input = httpConnection.getInputStream(); pYO =pL^Q
//logResponseHead(httpConnection); 'CLZ7pV
qnm_#!&uHT
(8 nv&|
byte[] b = new byte[1024]; ]@q%dsz
int nRead; xNz(LZ.c
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) #-hO\
QdC
{ *kr/,_K
nStartPos += fileAccessI.write(b,0,nRead); >rG>Bz^Pu
//if(nThreadID == 1) LQ0/oYmNc
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); yNu_>!Cp5
} {.Tx70kn
^l &lwSRVt
6(
HF)z
Utility.log("Thread " + nThreadID + " is over!"); UD I{4+z
bDownOver = true; n:j'0WW
//nPos = fileAccessI.write (b,0,nRead); %>_[b,
} GAGS-G#
catch(Exception e){e.printStackTrace ();} tDByOml8Ix
} -[>de!
T3$
} {C1crp>q
A~ya{^}
sXKkZ+2q
//打印回应的头信息 lU
WXXuO]
public void logResponseHead(HttpURLConnection con) -@TY8#O#-
{ -@To<