/* l?3vNa FeR
**SiteFileFetch.java r+imn&FK8
*/ RpHpMtvNo/
package NetFox; jo 7Hyw!g
import java.io.*; fp.!VOy
import java.net.*; R(M}0JRm
d4jVdOq2
kVV\*"9y
public class SiteFileFetch extends Thread { k-{yu8*';
;V|M3
7MKD_`g
SiteInfoBean siteInfoBean = null; //文件信息Bean [NQmL=l
long[] nStartPos; //开始位置 0L!er%GM
long[] nEndPos; //结束位置 ?cqicN.+6
FileSplitterFetch[] fileSplitterFetch; //子线程对象 !a' K &
long nFileLength; //文件长度 J)-T:.i|0
boolean bFirst = true; //是否第一次取文件 X}3P1.n:
boolean bStop = false; //停止标志 gsW=3m&`
File tmpFile; //文件下载的临时信息 ~Y\QGuT
DataOutputStream output; //输出到文件的输出流 $-m@KB
Jb(DJ-&
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !nec 7
public SiteFileFetch(SiteInfoBean bean) throws IOException CkRyzF
{
W;^Rx.W
siteInfoBean = bean; X7e>Z)l
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); u8|@|t
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &J\B\`
if(tmpFile.exists ()) %p<$|'
{ lo"j )Zt
bFirst = false; 0LS-i% 0
read_nPos(); \s,Iz[0Vfz
} BTOA &Ag
else AnRlH
{ 66/Z\H^d
nStartPos = new long[bean.getNSplitter()]; | @uq()
nEndPos = new long[bean.getNSplitter()]; ):/,w!1
} :aHcPc:
`+oV/:Q3
q5%2WM]6
])eOa%
} *U
M!(
f(!E!\&n^
pQqbZ3]
public void run() =D{B}=D\IM
{ 8Bj4_!g
//获得文件长度 l`DtiJ?$$0
//分割文件 j+$M?Z^
//实例FileSplitterFetch %Nl`~Kz9U
//启动FileSplitterFetch线程 vuXS/ d
//等待子线程返回 ooY\t +
try{ J`W-]3S#
if(bFirst) ~xw5\Y^
{ n|6?J_{<b>
nFileLength = getFileSize(); JfbKf~g
if(nFileLength == -1) sA3UeTf
{ .xEJaID\N
System.err.println("File Length is not known!"); Vz'HM$
} Mxo6fn6-46
else if(nFileLength == -2) 8[oYZrg
{ ZBF1rx?
System.err.println("File is not access!"); TiQ^}5~M
} W,DZ ;).%
else +GYS26
{ 3B;}j/h2
for(int i=0;i<nStartPos.length;i++) 8`*`nQhWa
{ 0potz]}
nStartPos = (long)(i*(nFileLength/nStartPos.length)); t=Jm|wJnUA
} V'j@K!)~xR
for(int i=0;i<nEndPos.length-1;i++) alc]
{ vu<#wW*9
nEndPos = nStartPos[i+1]; a&C.=
} zFywC-my@
nEndPos[nEndPos.length-1] = nFileLength; .9OFryo
} 3?@?-q2g
} IO"hF
Y87XLvig}
0vn[a,W<A
//启动子线程 0aogBg_@K
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &L%Jy #=
for(int i=0;i<nStartPos.length;i++) Ib6(Bp9.L
{ Pxqiv9D<R
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -TTs.O8P|<
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), {OCJ(^8i
nStartPos,nEndPos,i); Yy hny[fa9
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =T4u":#N;
fileSplitterFetch.start(); 'B`#:tX^N
} g8l5.Mpx
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), v,jhE9_O0
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); x,\!DLq:p
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", !R6ApB4ZI
nEndPos = " + nFileLength); 3$_*N(e
// fileSplitterFetch[nPos.length-1].start(); *T1~)z}j<
jgq{pZ#E
Bc<n2 C0
//等待子线程结束 @VK6JjIq
//int count = 0; ('4wXD]C
//是否结束while循环 .,M;huRg
boolean breakWhile = false; TBnvV 5_
Za%LAyT_s
7Cy<mS
while(!bStop) ,{8v4b-
{ Kt6>L5:94
write_nPos(); Ly>OLI0x_
Utility.sleep(500); `Mk4sKU\a
breakWhile = true; 1
i3k
="'- &
NXI[q'y
for(int i=0;i<nStartPos.length;i++) k>5 O`Y:
{ 8+&JQ"UaB
if(!fileSplitterFetch.bDownOver) kjE*9bUc
{ L/i(KF{
breakWhile = false; 6 P*O&1hv
break; J(s;$PG
} %K1")s
} ]JMl|e
if(breakWhile) FN?3XNp.
break; HnU Et/
au$"B/
OCK>%o$[
//count++; P^i.La,
//if(count>4) H;S%Y`V
// siteStop(); Cj^{9'0
} hO( RZ'{
X+l'bp]Ry
;`UecLb#
System.err.println("文件下载结束!"); SaO3zz@L
} x_!ZycEa
catch(Exception e){e.printStackTrace ();} kg>>D
} ^E,1V5
CDdkoajBa
f$F*3
//获得文件长度 M_|> kp
public long getFileSize() \#6Fm_b]u
{ +iA=y=;blH
int nFileLength = -1; RiR:69xwR*
try{ \ZH&LPAY
URL url = new URL(siteInfoBean.getSSiteURL()); b{5K2k&,
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =SBBvnPLI
httpConnection.setRequestProperty("User-Agent","NetFox"); yI)~]K
r
>NM\TLET~
LFu%v7L`
int responseCode=httpConnection.getResponseCode(); ax|1b`XUr"
if(responseCode>=400) UtJ a3ya
{ #YK5WTn5
processErrorCode(responseCode); rU2iy"L
return -2; //-2 represent access is error SEd5)0X^
} yL1CZ_
I%lE;'x
z`U Ukl}T
String sHeader; R_kQPP
thW<
^b-18 ~s
for(int i=1;;i++) `<fh+*
{ }!s!;BOx
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); glUo7^ay7
//Utility.log(in.readLine()); n(vDytrj;
sHeader=httpConnection.getHeaderFieldKey(i); ]axh*J3`i
if(sHeader!=null) JPx7EEkZR4
{ 80B>L
if(sHeader.equals("Content-Length")) Fn|gVR
{ ?mYYt]R
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 'Kbl3fUF
break; - u3e5gW
} 0l\y.
} 3,eIB(
else AuiFbRFi
break; pa<qZZ
} -J0WUN$2*
} 7;}l\VXHm
catch(IOException e){e.printStackTrace ();} oC|WB S
catch(Exception e){e.printStackTrace ();} `a]44es9q
l!~
mxUb
Ufid%T'
Utility.log(nFileLength); :@3Wg3N
my.`k'
e}{U7xQm1
return nFileLength; }_OM$nzj
} 6][1<}8
^U q
wts:65~
//保存下载信息(文件指针位置) O8u3y
private void write_nPos() k|E]YvnfG
{ `,>wC+}
try{ PX,rWkOce
output = new DataOutputStream(new FileOutputStream(tmpFile)); -X1X)0v$
output.writeInt(nStartPos.length); %{5n1w
for(int i=0;i<nStartPos.length;i++) 2 WBq
{ 3I=kr
// output.writeLong(nPos); -uR72f
output.writeLong(fileSplitterFetch.nStartPos); "^CXY3v
output.writeLong(fileSplitterFetch.nEndPos); )Hw:E71h2
} {rH9grb
output.close(); u5E]t9~Pq
} JBX[bx52<r
catch(IOException e){e.printStackTrace ();} m7|RD]q&
catch(Exception e){e.printStackTrace ();} w!3>N"em
} ]<w:V`(
pa]" iZz
=tdSq"jh
//读取保存的下载信息(文件指针位置) `$RA< 3
private void read_nPos() 3{Q,hpZN
{ Y:QD
try{ +5p{5 q(o
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6vy7l(%
int nCount = input.readInt(); 1(dj[3Mt
nStartPos = new long[nCount]; %@J1]E;
nEndPos = new long[nCount]; m6n!rRQ^U
for(int i=0;i<nStartPos.length;i++) X]*QUV]i
{ &*,:1=p
nStartPos = input.readLong(); woOy*)@
nEndPos = input.readLong(); x^= M6;:
} 9}tG\0tL*
input.close(); Q=cQLf;/'
} $&P?l=UG
catch(IOException e){e.printStackTrace ();} MBr:?PE7
catch(Exception e){e.printStackTrace ();} {bNXedZ\
} 4&^9Wklj
QBJ3iQs1
7S^""*Q^
private void processErrorCode(int nErrorCode) =!MY4&YX
{ t!;/Z6\Pb
System.err.println("Error Code : " + nErrorCode); [w\?j,
} dKhA$f~
YE+$H%Jl!
Xh+ia#K
//停止文件下载 deX5yrvOie
public void siteStop() ?(zoTxD
{ 3TuC+'`G
bStop = true; /\d$/~BFi
for(int i=0;i<nStartPos.length;i++) f^Bc
fileSplitterFetch.splitterStop(); LJzH"K[Gg6
Q[ieaL6&
I*[tMzE
} H^%.=kf
} mryN}
//负责部分文件的抓取 &