/* EqV]/0-\
**SiteFileFetch.java ,a&&y0,
*/ dF?:&oP]
package NetFox; CSC
sJE#4
import java.io.*; <ETR6r
import java.net.*; E
mUA38
g=T
!fF=
f;[\'_.*
public class SiteFileFetch extends Thread {
9z9EK'g
yJj$ir i
># {,(8\
SiteInfoBean siteInfoBean = null; //文件信息Bean |V 3AA
long[] nStartPos; //开始位置 l20fA-T
_I
long[] nEndPos; //结束位置 nsRZy0@$t
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ]W-7 U_
long nFileLength; //文件长度 X~`<ik{q
boolean bFirst = true; //是否第一次取文件 iL%Q@!ka
boolean bStop = false; //停止标志 K|n$-WDG}
File tmpFile; //文件下载的临时信息 vUX(h.}8
DataOutputStream output; //输出到文件的输出流 [HV>4,,3"
uEK9
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) k|Hxd^^I
public SiteFileFetch(SiteInfoBean bean) throws IOException o
IUjd
{ Zr&~gXmVS
siteInfoBean = bean; :KJG3j?
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); @213KmB.
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *5\k1-$
if(tmpFile.exists ()) UJqDZIvC
{ &s +DK`
bFirst = false; 7nzNBtk
read_nPos(); C
Rd1zDB
} Y55Yo5<j/+
else (#dwIBBFt
{ .3{PgrZ
nStartPos = new long[bean.getNSplitter()]; /GzA89N(
nEndPos = new long[bean.getNSplitter()]; "1<>c/h
} AjTkQ)
^*
xhbM;
AE_7sM
|
JmEI9n2
} [@l:C\2
Tn$/9<Q
5pOb;ry")`
public void run() )9^0Qk' ]
{ 7rc6
//获得文件长度 peA}/Jc
//分割文件 J?yNZK$WqN
//实例FileSplitterFetch @_gCGI>Q
//启动FileSplitterFetch线程 KRY%B[k
//等待子线程返回 e~Oge
try{ #B;~i6h]
if(bFirst) q`l&G%
{ q'07
nFileLength = getFileSize(); Ya#,\;dTT
if(nFileLength == -1) -QUr|:SK:
{ ?,_$;g
System.err.println("File Length is not known!"); ewo1^>
} ?0v(_ v
else if(nFileLength == -2) $.a4Og2
{ qjK'sge/
System.err.println("File is not access!"); 52*9q!
} $ BEIG@qG
else m&GxLT6
{ GI&XL'K&
for(int i=0;i<nStartPos.length;i++) XHX\+&6
{ b(hnou S
nStartPos = (long)(i*(nFileLength/nStartPos.length)); [d(@lbV0
} `zr%+
for(int i=0;i<nEndPos.length-1;i++) Ig9gGI,
{ UDJ{iZ
nEndPos = nStartPos[i+1];
aOS:rC
} (*.t~6c?5
nEndPos[nEndPos.length-1] = nFileLength; P/BWFN1
} j@JhxCe1+R
} 3GH@|id
a3&&7n
]et4B+=i
//启动子线程 <<43'N+
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 4LO U[D
for(int i=0;i<nStartPos.length;i++) dQ4VpR9|;
{ NWuJ&+gcO5
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V3<baxdE
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 0!WF,)/T7i
nStartPos,nEndPos,i); 54TW8y `h
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); NVEjUt/
fileSplitterFetch.start(); EhEUkZE3)
} #WBlEVx;Z
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9y BENvq
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); MXSN
<
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", /Iwnl
nEndPos = " + nFileLength); gW{<:6}!*
// fileSplitterFetch[nPos.length-1].start(); OYw~I.Rq
d(.e%[`
L* k[Vc
//等待子线程结束 (!-gX"<b
//int count = 0; m).S0
//是否结束while循环 7
Jxhn!
boolean breakWhile = false; 8p4J7 -
7Ao9MF-
. ZuRH_pI
while(!bStop) l(-We.:(
{ `Yk~2t"V
write_nPos(); k
lLhi<*
Utility.sleep(500); uFseO9F.2
breakWhile = true; E kb9=/
m `"^d #
.Dn.|A
for(int i=0;i<nStartPos.length;i++) /.Yf&2X\
{ hlY]s
&0
if(!fileSplitterFetch.bDownOver) P5u
Y1(
{ \8Mn[G9TL
breakWhile = false; ~U] "dbQ
break; 2TH13k$
} Tr}z&efY
} z >EO Qe
if(breakWhile) (G:A^z
break; ^/nj2"
.hBq1p
RrFq"
//count++; \!!qzrq
//if(count>4)
Bw;gl^:UG
// siteStop(); 9g*O;0 uz
} cT2&nZ
(mO{W
)?5027^
System.err.println("文件下载结束!"); nz{
;]U1
} LAe>XF-5
catch(Exception e){e.printStackTrace ();} )7$1Da|.
} `Aa}q(}k
}tq
`pMI@"m
//获得文件长度 B3x 4sKs
public long getFileSize() gYeKeW3)
{ #'poDX?
int nFileLength = -1; -^1}J
try{ /_WAF90R?
URL url = new URL(siteInfoBean.getSSiteURL()); 3.i$lp`t
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 'eyzH[l,(
httpConnection.setRequestProperty("User-Agent","NetFox"); 2TFb!?/RQ
-L4fp
I5nxY)v
int responseCode=httpConnection.getResponseCode(); ^Rr!YnEN
if(responseCode>=400) RIhu9W
{ mLEJt,X
processErrorCode(responseCode); / //
return -2; //-2 represent access is error a0wSXd
} sj9j47y
;jgk53lo
KT5amct
String sHeader; M~rN17S
ZmLA4<
jHPkfwfAF
for(int i=1;;i++) YC!IIE_
{ .Us)YVbk
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); {yo{@pdX>
//Utility.log(in.readLine()); Ow#a|@
sHeader=httpConnection.getHeaderFieldKey(i); :EGvI
if(sHeader!=null) *F<Ar\f5
{ ZVelKI8>
if(sHeader.equals("Content-Length")) JXx[e
{ ;[qA?<GJ
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); &i(\g7%U
break; *VUD!`F
} Vn=K5nm
} e/7rr~"|
else w"Q/ 6#!K
break; x?"+Or.h
} T`zUgZ]
} [Qw BSq8)
catch(IOException e){e.printStackTrace ();} \CU-a`n
catch(Exception e){e.printStackTrace ();} >Ut4INV
&Z3u(Eb
;i'mma_!
Utility.log(nFileLength); HZawB25{
^)nIf)9}7
g[c_rty
return nFileLength; kC_Kb&Q0
} YHp]O+c
Al
MMN"j
DqJzsk'd3
//保存下载信息(文件指针位置) ,q K'!
private void write_nPos() eqY8;/
{ (rieg F
try{ uFUVcWt
output = new DataOutputStream(new FileOutputStream(tmpFile)); r}\m%(i
output.writeInt(nStartPos.length); W9rmAQjn
for(int i=0;i<nStartPos.length;i++) C JYpgSr
{ T;M4NGmvd
// output.writeLong(nPos); u|+Dqe`
output.writeLong(fileSplitterFetch.nStartPos); :!QT ,
output.writeLong(fileSplitterFetch.nEndPos); PL|ea~/
} 0woLB#v9
output.close(); h( DmSW
} Ln$= 8x^T
catch(IOException e){e.printStackTrace ();} [9C{\t
catch(Exception e){e.printStackTrace ();} Vv&GyqoO]
} e9;5.m
MP|$+yuR~
mhgvN-? "h
//读取保存的下载信息(文件指针位置) XY,!vLjL
private void read_nPos() s$Vz1B
{ sh/4ui{
try{ Y`*h#{|
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); C <d]0)
int nCount = input.readInt(); _Wtwh0[r*
nStartPos = new long[nCount]; 0TqIRUz "C
nEndPos = new long[nCount]; FL[,?RU?2
for(int i=0;i<nStartPos.length;i++) pS~=T}o
{ 9>6?tb"f*H
nStartPos = input.readLong(); Xd@ d$
nEndPos = input.readLong(); 7n[0)XR>
} J(5#fo{Q.g
input.close(); HP,{/ $i:
} XC!Y {lp
catch(IOException e){e.printStackTrace ();} !8I80:e_~
catch(Exception e){e.printStackTrace ();} W+i&!'
} 4vi[hiV
y[';@t7CC
eyuQ}R
private void processErrorCode(int nErrorCode) ! JauMR
{ 1oI2
System.err.println("Error Code : " + nErrorCode); ?h:xO\h8
} 6lm<>#_
w7~cY=
!>:]k?$b
//停止文件下载 !
Q8y]9O
public void siteStop() %-L
T56T
{ m>f8RBp]'
bStop = true; o|APsQE
for(int i=0;i<nStartPos.length;i++) ,rX|_4n*
fileSplitterFetch.splitterStop(); n^Q-K}!T/
c#Qlr{ES
K?Jo"oy7
} L=gG23U&
} 'yR\%#s6
//负责部分文件的抓取 ?>NX}~2cf
**FileSplitterFetch.java _FkH;MG WS
*/ Y o\%53w/
package NetFox; 47)\\n_\z
$ncP#6
_QneaPm%
import java.io.*; a28`)17z
import java.net.*; NbK67p:
8{ )N%r
p:
u@?
k
public class FileSplitterFetch extends Thread { ]f6,4[
y
m?uj4I{
'26
,.1
String sURL; //File URL /k KVIlO
long nStartPos; //File Snippet Start Position |=[._VH1
long nEndPos; //File Snippet End Position P:UR:y([
int nThreadID; //Thread's ID G[]h1f!
boolean bDownOver = false; //Downing is over bUe6f,8,
boolean bStop = false; //Stop identical 7
b{y
FileAccessI fileAccessI = null; //File Access interface 7 iQa)8,
s14ot80)
D2f~*!vEnA
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException u179!
{ 'M
fVZho{
this.sURL = sURL; %?J-0
this.nStartPos = nStart; /d>Jkv
this.nEndPos = nEnd; 6%MM)Vj+u
nThreadID = id; #e[igxwi
fileAccessI = new FileAccessI(sName,nStartPos);//定位 m,Mg
} w$aejz`[
^xq)Q?[{
"Mh}n-oju
public void run() |N|[E5Cn
{ !T.yv5ge'
while(nStartPos < nEndPos && !bStop) db.~^][k
{ V]/$ dJ
=cI> {
R#Z
m[S
try{ WL;2&S/{@
URL url = new URL(sURL); vb$i00?
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4+Y9":<
httpConnection.setRequestProperty("User-Agent","NetFox"); W{t-UK
String sProperty = "bytes="+nStartPos+"-"; B %
httpConnection.setRequestProperty("RANGE",sProperty); H<
Utility.log(sProperty); <W/YC2b
7|<-rjz^
;oOv~YB7H
InputStream input = httpConnection.getInputStream(); 1%7zCM0s
//logResponseHead(httpConnection); k;HI-v
Q@rlqWgU
~
>[g.8'hI
byte[] b = new byte[1024]; 7e H j"_;
int nRead; \F<C$cys\
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) R.rE+gxO1
{ y27MG
nStartPos += fileAccessI.write(b,0,nRead); Zig3WiD&
//if(nThreadID == 1) @1V?94T1
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !X1
KOG
} B
\.05<
\j0016;
/brHB @$
Utility.log("Thread " + nThreadID + " is over!"); aL/7xa
bDownOver = true; d V3R)
//nPos = fileAccessI.write (b,0,nRead); P?zL`czWd
} X`7O%HiX/`
catch(Exception e){e.printStackTrace ();} 6\m'MV`R!
} 4TcW%
} )SfM `W)Y
UbP$WIrq
o'ZW
//打印回应的头信息 DK<}q1xi
public void logResponseHead(HttpURLConnection con)
QLZ%m $Z
{ G.qjw]Llf
for(int i=1;;i++) 6}:(m#+
{ '3B7F5uLx"
String header=con.getHeaderFieldKey(i); P]4@|u;=6[
if(header!=null) U)SQ3*j2D
//responseHeaders.put(header,httpConnection.getHeaderField(header)); KXcE@q9
Utility.log(header+" : "+con.getHeaderField(header)); muKjeg'b
else 7qg. :h
break; Jg@eGs\*
} )Nl xW5
} uC"Gm;0
.WlZT-
h[gKyxZ/t
public void splitterStop() wArzMt}[
{ bJL ,pe+u
bStop = true; OmaG|2u
} "O%xQ N
8-)@q|
KvlLcE~`o
} *4g:V;L
=]-D_$S~
m[A$Sp_"-h
/* 0;" >.
**FileAccess.java I_na^sh*
*//文件访问(定位,写) =]0AZ
package NetFox; nb(Od,L
import java.io.*; YF13&E2`\
6{2 9cX.
9j$ J}=y
public class FileAccessI implements Serializable{ e;&f