/* _e?(Gs0BM
**SiteFileFetch.java naAZR*(A
*/ 2j_L
jY'7
package NetFox; {cG&l:-r
import java.io.*; 5qFqH
import java.net.*; ]p$fEW g
_/PjeEm
$p
`|]juc
public class SiteFileFetch extends Thread { M\T6cN@m
W;hI[9
KWd]?e)
SiteInfoBean siteInfoBean = null; //文件信息Bean :KW
long[] nStartPos; //开始位置 7ZJYT#>b
long[] nEndPos; //结束位置 b)`<J @&{
FileSplitterFetch[] fileSplitterFetch; //子线程对象 $osDw1C
long nFileLength; //文件长度 7DT9\BT
boolean bFirst = true; //是否第一次取文件 o{ U=
f6
boolean bStop = false; //停止标志 LdRLKE<'e
File tmpFile; //文件下载的临时信息 ="XxS|Mq3
DataOutputStream output; //输出到文件的输出流 Q+#, VuM
*DU86JL`
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) O*c+TiTb
public SiteFileFetch(SiteInfoBean bean) throws IOException G`TO[p]q
{ 3lLO.
siteInfoBean = bean; ! WQEv_G@
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); B?Pu0
_|s
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); EpPKo
if(tmpFile.exists ()) M(5l Su
{ Z}XA(;ck
bFirst = false; R|5w :+=z
read_nPos(); +VzR9ksJj
} A2htD!3
else /pV^w
{ O~igwFe
nStartPos = new long[bean.getNSplitter()]; ;[%AeN5W
nEndPos = new long[bean.getNSplitter()]; E?%rmdyhL!
} C~kw{g+|
!v$hqNt7
EXo"F*gW
\GBv@
} G;`+MgJ)
|nv8&L8
_jP]ifu`
public void run() ](3=7!!J
{ ve'h z{W
//获得文件长度 6$`8y,TMSt
//分割文件 OCF=)#}qd
//实例FileSplitterFetch a^|mF#
z
//启动FileSplitterFetch线程 d)9=hp;,V
//等待子线程返回 o2&mhT
try{ 'Kc;~a
if(bFirst) ~kF^0-JZY
{ (AV j_Cw
nFileLength = getFileSize();
rfoLg
if(nFileLength == -1) na>UFw7>*
{ 0riTav8
System.err.println("File Length is not known!"); wR\%tumk
} /2WGo-
else if(nFileLength == -2) U%m,:b6V
{ w8$8P
System.err.println("File is not access!"); 5_0Eh!sx
} 7'CdDB6&.
else "}(*Km5Po
{ r
",..{
for(int i=0;i<nStartPos.length;i++) g2BE-0, R
{ (jtrQob
nStartPos = (long)(i*(nFileLength/nStartPos.length)); M;-PrJdyt
} <V>]-bl/
for(int i=0;i<nEndPos.length-1;i++) /Rf:Z.L
{ =YOq0
nEndPos = nStartPos[i+1]; Y2W|b5
} xo
a1='
nEndPos[nEndPos.length-1] = nFileLength; b<n*wH
} mA@FJK_
} xG/B$DLn
_h6SW2:z!E
d)1 d0ES
//启动子线程 .J"QW~g^
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; =;ClOy9
for(int i=0;i<nStartPos.length;i++) s'b 4Me
{ u%!/-&?wF
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), qHaH=g%
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^CO{86V
nStartPos,nEndPos,i); 0Ta&o-e
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9sG]Q[:.]
fileSplitterFetch.start(); G5vp(%j
} d<K2
\:P{}
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), #9zpJ\E
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); :y'EIf
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Xdh2
nEndPos = " + nFileLength); `Y O(C<r-
// fileSplitterFetch[nPos.length-1].start(); g&z8t;@
l0 =[MXM4
/9ctmW1!<
//等待子线程结束 6~c#G{kc
//int count = 0; h?[|1.lJx(
//是否结束while循环 2Pow-o*r
boolean breakWhile = false; }D># AFs6#
7-:R{&3Lm:
)Zf1%h~0r
while(!bStop) I+=+ ,iXhB
{ V'hb 4}@
write_nPos(); &S,_Z/BS;
Utility.sleep(500); <Pzy'9
breakWhile = true; `AYq,3V
vd?Bk_d9k,
DA1?M' N
for(int i=0;i<nStartPos.length;i++) .7]P-]uOZ
{ o?Aj6fNY?
if(!fileSplitterFetch.bDownOver) H2H`7 +I,
{ *Nm$b+
breakWhile = false; Mg#yl\v
break; 4-~Z{#-
} SQ_Je+X
} Q$uv
\h;
if(breakWhile) Kci. ,I
break; G54J'*Z
gg>QXui
(+c1 .h
//count++; ],_+J*
//if(count>4) dvZH ~mF
// siteStop(); (:aU"5M
} AtewC
Yo
D|)a7_
~wa6S?
System.err.println("文件下载结束!"); QF)\\D[
} P #O2MiG
catch(Exception e){e.printStackTrace ();} f(Y_<%
} /a'1W/^2
N0H=;CIQ
M?!@L:b[
//获得文件长度 ^|H={pd'c0
public long getFileSize() y~fKLIoz"
{ w9{C"K?u=
int nFileLength = -1; As< B8e]
try{ +x(#e'6p
URL url = new URL(siteInfoBean.getSSiteURL()); R*:>h8
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); V:$+$"|
httpConnection.setRequestProperty("User-Agent","NetFox"); RN[I%^$"
SRwD`FF
|~r-VV(=
int responseCode=httpConnection.getResponseCode(); T5
(|{-
if(responseCode>=400) tLBtE!J$[
{ #obRr#8
processErrorCode(responseCode); z%OKv[/N
return -2; //-2 represent access is error @^xtxtjzux
} 4);_f
!bP%\)5
" !~o
String sHeader; ,;_+o]
)P$|9<_q7x
T1]?E]m{
for(int i=1;;i++) 7Ml4u%?
{ h:nybLw?
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ikW[lefTq
//Utility.log(in.readLine()); t
N{S;)q#X
sHeader=httpConnection.getHeaderFieldKey(i); `&M,B=E
if(sHeader!=null) sU"%,Q5
{ vd{QFJ
if(sHeader.equals("Content-Length")) 9<6q(]U
{ ovdJ[bO
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); >>
zd
break; Y3Fj3NwS
} O2?C *
} 1@DC#2hPr
else 9@lWI
break; ZEAUoC1E1
} JVYH b 60Z
} v1TFzcHl<
catch(IOException e){e.printStackTrace ();} Ho>Np&
catch(Exception e){e.printStackTrace ();} xWxc1tT`
9 3>4n\
Qc; kj
Utility.log(nFileLength); D5TDg\E
gcU*rml
r3W3;L
return nFileLength; 4f([EV[6dK
} lH}KFFbp
c-sjYJXKM*
Q?#I{l)V(
//保存下载信息(文件指针位置) 2;8m0+tl
private void write_nPos() `gX@b^
{ 1^!SuAA@
try{ c+ oi8G
output = new DataOutputStream(new FileOutputStream(tmpFile)); TmsIyDcD~
output.writeInt(nStartPos.length); ~SnUnNDm `
for(int i=0;i<nStartPos.length;i++) j*jUcD*
{ *.DC(2:o!
// output.writeLong(nPos); ilA45@
output.writeLong(fileSplitterFetch.nStartPos); 0NXH449I=
output.writeLong(fileSplitterFetch.nEndPos); mQj=-\p
} }yz>(Pq
output.close(); V
~C$| +>e
} *\sPHz.
catch(IOException e){e.printStackTrace ();} ;2p+i/sVj
catch(Exception e){e.printStackTrace ();} D|N4X`T`
}
.Q{RTp
Bq q=2lj
an"&'D}U
//读取保存的下载信息(文件指针位置) *MP.YI:h
private void read_nPos() 2
T!Tiu
{ ^"WVE["
try{ M|WBJ'#x0
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Y%pab/Y
int nCount = input.readInt(); -8Jw_
nStartPos = new long[nCount]; CM;b_E)9)f
nEndPos = new long[nCount]; o~Se[p
for(int i=0;i<nStartPos.length;i++) 6l#x1o;
{ ,NSf
nStartPos = input.readLong(); .Pb-{!$Ni
nEndPos = input.readLong(); U1[)e D`
} M:S-%aQ_<y
input.close(); 3Q=^&o