/* Ga"t4[=I
**SiteFileFetch.java iphe0QE[#}
*/ x,pzX(
package NetFox; !h4L_D0
import java.io.*; mJl|dk_c
import java.net.*; qlO(z5Ak
Z8Qmj5'[
Ry8@U9B6,t
public class SiteFileFetch extends Thread { l:%4@t`
4$C:r&K
__OD^?qa
SiteInfoBean siteInfoBean = null; //文件信息Bean WOiw 0
long[] nStartPos; //开始位置 1jpcoJ@s
long[] nEndPos; //结束位置 lUbQ@7a<'
FileSplitterFetch[] fileSplitterFetch; //子线程对象 a~=$9+?w
long nFileLength; //文件长度 4 @ )|N'
boolean bFirst = true; //是否第一次取文件 4gzrxV
boolean bStop = false; //停止标志 VU 9w2/cM
File tmpFile; //文件下载的临时信息 =otJf~
DataOutputStream output; //输出到文件的输出流 Nw*
>$v
ND77(I$3s
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) se2ay_<F+
public SiteFileFetch(SiteInfoBean bean) throws IOException X2v|O3>/N
{ @#xh)"}
siteInfoBean = bean; blEs!/A`
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); {dTtYL$'"
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); @|sDb?J
if(tmpFile.exists ()) [kaj8
{ r$<[`L+6
bFirst = false; %i:Sf
read_nPos(); rjHL06qE
} eKsc ["
else PQDWY
{ l.Iov?e1S
nStartPos = new long[bean.getNSplitter()]; |hk?'WGc`0
nEndPos = new long[bean.getNSplitter()]; gq\ulLyOeZ
} $n.oY5=\
XDRw![H,~
M:YtW5{
Z(k7&^d
} )OpB\k
d ]R&mp|'
wGr5V!
public void run() E]/` JI'%
{ &==X.2XW
//获得文件长度 hE@s~~JYd
//分割文件 $)8b)Tb
//实例FileSplitterFetch gTa6%GM>
//启动FileSplitterFetch线程 Y%m^V?k
//等待子线程返回 F l@%?
try{ {@ ygq-TZ
if(bFirst) b\&|030+
{ D',[M)
nFileLength = getFileSize(); {]ie|>'=C
if(nFileLength == -1) h2<Y*j
{ JL.noV3q$
System.err.println("File Length is not known!"); =wE1j
} '[V}]Z>-
else if(nFileLength == -2) x=s=~cu4,
{ 5F&xU$$a-
System.err.println("File is not access!"); 8$4@U;Vh;
} ?(rJ
else tn>z%6;&Z
{ !(QDhnx}9c
for(int i=0;i<nStartPos.length;i++) av~dH=&=
{ csABfxib
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ay4E\=k
} %\<SSp^n
for(int i=0;i<nEndPos.length-1;i++) a$-:F$z
{ ;c};N(2
nEndPos = nStartPos[i+1]; zI1-l9 o
} Qv4g#jX{
nEndPos[nEndPos.length-1] = nFileLength; D_VAtz
} Twl>Pn>
} *PEk+e
0@ccXFE
" b?1Yc-
//启动子线程 ` 9iB`<
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; gK7bP'S8H
for(int i=0;i<nStartPos.length;i++) St 4YNS.|
{ O{@m ,uY
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >AFX}N#
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), :56f
nStartPos,nEndPos,i); Ut|G.%1Vd%
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); -SO`wL NV
fileSplitterFetch.start(); ]m&cVy&
} :70n% 3a
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bUJ5jkZ)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 5^:N]Mp"
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", fZ8at
nEndPos = " + nFileLength); z;fi
// fileSplitterFetch[nPos.length-1].start(); /8](M5X]f
5BWO7F0v"
vuP.V#
//等待子线程结束 \l$gcFXb
//int count = 0; x.J%
c[Q8
//是否结束while循环 'a1%`rzm
boolean breakWhile = false; VkKq<`t<
LNm{}VJ%
U TT 7a"
while(!bStop) q4Z9;^S
{ e;_ cC7
write_nPos(); CB&$tDi
Utility.sleep(500); '(N -jk
breakWhile = true; ^
hoz<Ns
P01o: /}
{-FS+D`
for(int i=0;i<nStartPos.length;i++) ^dc~hD
{ !w+A3Z>V
if(!fileSplitterFetch.bDownOver) Pi^5LI6JW
{ >'\cNM~nf
breakWhile = false; mI;#Zq_j
break; X0IXj%\N
} *p&c}2'
} WrzyBG_
if(breakWhile) \:`'!X1*U
break; 7-*QF>w<a
Y bX3_N&
G?`x$U U
//count++; ]gxt+'iAFS
//if(count>4) 8V]oR3'
// siteStop(); ?$:;hGO.<~
} 7F=Xn@ _
^&nC)T<w
:
5=E>!
System.err.println("文件下载结束!"); X}!r4<;(
} !sbKJ+V7
catch(Exception e){e.printStackTrace ();} 4d\"gk
} >=<qAkk
'%k<? *
c_oI?D9
//获得文件长度 [;IW'cXNq
public long getFileSize() <M//zXa
{ EqY e.dF,
int nFileLength = -1; +}MV$X
try{ auzrM4<tz
URL url = new URL(siteInfoBean.getSSiteURL()); }PdHR00^
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _'g'M=E
httpConnection.setRequestProperty("User-Agent","NetFox"); =e<;B_~.
iymOq9
JjH#,@'.
int responseCode=httpConnection.getResponseCode(); {u/G!{N$
if(responseCode>=400) Z @:5vo
{ u!iBAr5
processErrorCode(responseCode); ,}9 G|$
return -2; //-2 represent access is error *)PCPYB^
} (6Ssk4
*Ey5F/N}$H
,(%?j]_P2
String sHeader; <4caG2~q
#1>DV@^F
q(N2#di
for(int i=1;;i++) |sa{!tKJ
{ NS^(5g
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); caK<;bmu-
//Utility.log(in.readLine()); @O~
sHeader=httpConnection.getHeaderFieldKey(i); o_!=-AWV
if(sHeader!=null) m-{t%[Y
{ s`:>"1\|
if(sHeader.equals("Content-Length")) j\,HquTR
{ 37#|X*L
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); KK}?x6wV0,
break; 7N@4c
} P|rsq|',
} Afpj*o
else i&|fGX?-I
break; gH{X?
} +3@d]JfMh
} yQ^k%hHa
catch(IOException e){e.printStackTrace ();} 6mFH>T*jzH
catch(Exception e){e.printStackTrace ();} D)yCuw{M:
@y{i.G
pHW
Qk z(
Utility.log(nFileLength); :'\4%D=w
w&A&BE^O/
3$]SP1Mc(
return nFileLength; 1x\Vz\
} 3ug|H
W%/lBkP
!11x&Db
//保存下载信息(文件指针位置) y:FxX8S$'e
private void write_nPos() ^H0`UKE
{ fB\+.eN
try{ AnB]f~Yjl
output = new DataOutputStream(new FileOutputStream(tmpFile)); Qv3g
4iJ
output.writeInt(nStartPos.length); R.(cGZS
for(int i=0;i<nStartPos.length;i++) 8 *Fr=+KN
{ @,b:s+]rp
// output.writeLong(nPos); b zz{ p1e
output.writeLong(fileSplitterFetch.nStartPos); ^8_`IT
output.writeLong(fileSplitterFetch.nEndPos); ) h*)_7
} (6 jr}kP
output.close(); =1rq?M eX
} a$Lry?pb
catch(IOException e){e.printStackTrace ();} @<GVY))R8
catch(Exception e){e.printStackTrace ();} ?q}XDc
} 9u3~s<
.JR"|;M}
1QfOD-lv
//读取保存的下载信息(文件指针位置) >JNK06T
private void read_nPos() qr5ME/)z
{ hq5=>p
try{ pq
\M;&
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); /0w?"2-
int nCount = input.readInt(); f z)i9D@
nStartPos = new long[nCount]; Bld%d:i
nEndPos = new long[nCount]; b4_"dg~gK
for(int i=0;i<nStartPos.length;i++) =:fFu,+{
{
T?!&a0
nStartPos = input.readLong(); O2W EA
nEndPos = input.readLong(); ?[[K6v}q{
} 4JF8S#8B
input.close(); {gSR49!Q
} IIN"'7Z^R
catch(IOException e){e.printStackTrace ();} M6ol/.G[
catch(Exception e){e.printStackTrace ();} *`}4]OGv.
} {{FA"NW
-:O~J#D
VrV* -J'
private void processErrorCode(int nErrorCode) ^':Az6Z
{ \M]w I
System.err.println("Error Code : " + nErrorCode); 7l-`k
} PI"&-lXI-m
?0Xt |
<lk_]+ XJ3
//停止文件下载 "@xF(fyg
public void siteStop() l:!4^>SC
{ .Yxx
bStop = true; ObDcNq/b!
for(int i=0;i<nStartPos.length;i++) jGB2`^&d
fileSplitterFetch.splitterStop(); 9]Q\Pr\Ub$
QOG
S`
fh
B3
mD0
} IN? A`A
} 97H2hYw9l
//负责部分文件的抓取 -j%!p^2j9
**FileSplitterFetch.java ]jWe']T
*/ !}sYPz]7!
package NetFox; OL{U^uOhY
m6qmZ2<
48.2_H<
import java.io.*; 8T5s6EmIOW
import java.net.*; {FR#je
>$gWeFu
x\ :x`k@
public class FileSplitterFetch extends Thread { bSW!2#~
8G?{S.%.
u~X]W3
String sURL; //File URL {u BpM9KT
long nStartPos; //File Snippet Start Position 7)S;VG k
long nEndPos; //File Snippet End Position :#!m(s`
int nThreadID; //Thread's ID Ga\E`J$c
boolean bDownOver = false; //Downing is over /jI>=:z
boolean bStop = false; //Stop identical %eoO3"//
FileAccessI fileAccessI = null; //File Access interface 4m%RD&ZN
_
?f~UvK
U!@3['
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _7SOl.5ZE
{ M) 9Ss
this.sURL = sURL; 8-cB0F=j_
this.nStartPos = nStart; a#X[V5|6Q
this.nEndPos = nEnd; s[:e '#^
nThreadID = id; ArBgg[i
fileAccessI = new FileAccessI(sName,nStartPos);//定位 \h6_m)*H4
} e_6@oh2s-
U8?%Dq%i
W,zlR5+Jk
public void run() cdL$T6y
{ EP#3+BsH
while(nStartPos < nEndPos && !bStop) mw<LNnT{8
{ 5S'89 r3m
XUUl*5^
89F^I"Im(
try{ UzVnC:
URL url = new URL(sURL); P,Fs7
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Aa*UV6(v
httpConnection.setRequestProperty("User-Agent","NetFox"); 3@e#E4+ff
String sProperty = "bytes="+nStartPos+"-"; !+T9NqDv[
httpConnection.setRequestProperty("RANGE",sProperty); WU-.lg'c'
Utility.log(sProperty); kV7c\|N9
<C\snB
/H+j6*}r
InputStream input = httpConnection.getInputStream(); a;AvY O
//logResponseHead(httpConnection); MD ~03
gIS<"smOo
}q-_|(b;
byte[] b = new byte[1024];
WpX)[au
int nRead; tP2hU[7Z
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >Pv#)qtm
{ #RoGyrLo
nStartPos += fileAccessI.write(b,0,nRead); rlYAy5&
//if(nThreadID == 1) V7u;"vD
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); T78`~-D4<
} l]whL1N3
TD+V.}
ysA~Nq@
Utility.log("Thread " + nThreadID + " is over!"); )*N]Q
bDownOver = true; oB8u[!
//nPos = fileAccessI.write (b,0,nRead); iXtar;%
} B 8z3W9
catch(Exception e){e.printStackTrace ();} ,u|vpN
} U/E M(y
} S?nXpYr
uzL)qH$b
#_{3W-35*
//打印回应的头信息 HK>!%t0S
public void logResponseHead(HttpURLConnection con) w">XI)*z
{ <5MnF
for(int i=1;;i++) `,ZsKxI
{ M xUj7ae
String header=con.getHeaderFieldKey(i); %-?HCjT
if(header!=null) ppIMaP
//responseHeaders.put(header,httpConnection.getHeaderField(header)); I9Af\ k|^
Utility.log(header+" : "+con.getHeaderField(header)); 7g3vh%G.
else msS5"Qr
break; @giipF2$
} aG QC
} uArs[e|f
zYfn;s%A
[gFpFz|b<
public void splitterStop() W0eb9g`s
{ -Cv:lJj
bStop = true; g*Nc+W](P>
} t {tcy$bw
9mkt.>$
,EW-21
} HjKj.fV
zC6,m6Dv
MIasCH>r
/* {ScilT
**FileAccess.java 1HxE0>
*//文件访问(定位,写) j}Lt"r2F
package NetFox; |xyN#wi
import java.io.*; JnH>L|G{;%
B*E:?4(<P
s%"3F<\
public class FileAccessI implements Serializable{ #\1;d8h
oqOv"yLJ:
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 |lAu6d
!
RandomAccessFile oSavedFile; r>4.{\C
long nPos; A 1x?_S"a
<*0^X%Vf\
,tv
P"@d
public FileAccessI() throws IOException fk,[`n+
{
.BJ;}
this("",0); ac6Lv}w_
} =ZjF5,@
x3O$eKy\|5
8r(S=dA
public FileAccessI(String sName,long nPos) throws IOException DSad[>Uj],
{ K.G}*uy
oSavedFile = new RandomAccessFile(sName,"rw"); F`-|@k
this.nPos = nPos; w;}pebL:
oSavedFile.seek(nPos); Q~<$'j
} eZR{M\Q
wQJY,|.
UN[rW0*
public synchronized int write(byte[] b,int nStart,int nLen) "jly[M}C
{ 5$0@f`sj
int n = -1; |=2E?&%?
try{ MHmaut#
oSavedFile.write(b,nStart,nLen); vs;T}'O
n = nLen; |H 0+.f;
} Bh?K_{e
catch(IOException e) i6M_Gk}
{ Au,xIe!t
e.printStackTrace (); j@$p(P$
} cx M=#Go
dQLR%i#P8
XzGPBi
return n; |k3ZdM
} ;=>4
'$8
wND0KiwH
T:IKyb
} !Vl>?U?AN
5xL%HX[S
5CH9m[S
/* #jn6DL@[{
**SiteInfoBean.java Lw<?e;
*/ ]}H;`H
package NetFox; 4.2qt
<<