/* VN!^m]0
**SiteFileFetch.java q
w"e0q% )
*/ 1gL8$.B?
package NetFox; )8\Z=uC
import java.io.*; EywZIw?mjX
import java.net.*; I *1#
&AN%QhI
6pSRum
public class SiteFileFetch extends Thread { oF`-cyj"
pq@$&G
s'_$j$1
SiteInfoBean siteInfoBean = null; //文件信息Bean V}p*HB@:
long[] nStartPos; //开始位置 RNsJ!or
long[] nEndPos; //结束位置 5,g$|,Shv
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Y'\3ux0]4'
long nFileLength; //文件长度 ?m`R%>X"
boolean bFirst = true; //是否第一次取文件 A/r;;S)%2
boolean bStop = false; //停止标志 CA'hvXb.
File tmpFile; //文件下载的临时信息 3Ro7M=]
DataOutputStream output; //输出到文件的输出流 \0xzBs1!
8'>.#vyMGv
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) hnlU,p&y3
public SiteFileFetch(SiteInfoBean bean) throws IOException >0[qi1
{ GIJV;7~
siteInfoBean = bean; axt6u)4%7:
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Au%Wrk3j
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); .f [\G*
if(tmpFile.exists ()) KX&Od@cQ$
{ fte!Ll'
bFirst = false; >V77X+!
read_nPos(); zcbA)
} #<^/yoH7C6
else +K @J*W 1
{ Vz+=ZK r5
nStartPos = new long[bean.getNSplitter()]; -#:Y+"'
nEndPos = new long[bean.getNSplitter()]; ?3e!A9x
} 9e|{z9z[l
AF07KA#
9'1;-^U1
H>Iet}/c
} $/-wgyP3m+
Fb$5&~d
SvCK;$:
public void run() ,L8I7O}A;
{ ;FIMCJS
//获得文件长度 GHJQ d&G8G
//分割文件 -+Awm{X_@
//实例FileSplitterFetch \^^hG5f
//启动FileSplitterFetch线程 P,LXZ
//等待子线程返回 lu9Ir>c
try{ 8#d99dOe
if(bFirst) C'xU=OnA8
{ $e^ :d
nFileLength = getFileSize(); (h8hg+l
o
if(nFileLength == -1) 5Rt0h$_J
{ K{7S
System.err.println("File Length is not known!"); '44nk(hM69
} @O*ev|o@x
else if(nFileLength == -2) EIVQu~,H
{ LU 5
`!0m
System.err.println("File is not access!"); u"CIPc{Sr
} %`<`z yf
else U3dR[*
{ 8u~\]1(
for(int i=0;i<nStartPos.length;i++) Dk.9&9mz
{ It,n +A
nStartPos = (long)(i*(nFileLength/nStartPos.length)); PxCl]~v
} oW\7q{l2)
for(int i=0;i<nEndPos.length-1;i++) bC,M&<N
{ McMK|_H
nEndPos = nStartPos[i+1]; *j|Tm7C
} PY3Vu]zD
nEndPos[nEndPos.length-1] = nFileLength; D;#Yn M3
} QP-<$P;~
} {D_4~heF
7;#dX~>@{
t&?v9n"X
//启动子线程 PtVNG
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; |jCE9Ve#
for(int i=0;i<nStartPos.length;i++) U*Q5ff7M6"
{ wx?{|
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), h"Yqm"U/
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), }'M1(W
nStartPos,nEndPos,i); e|+;j}^C
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); DF&jZ[##
fileSplitterFetch.start(); rF
j)5~
} )9sr,3w
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), U"R.!=v
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); E0?\DvA
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", h ?qY y$
nEndPos = " + nFileLength); <t|9`l_XW
// fileSplitterFetch[nPos.length-1].start(); 7g<`wLAH
)PZ}^Fa
N55=&-p
//等待子线程结束 +cOI`4`$
//int count = 0; :DF4g=
//是否结束while循环 ^OcfM_4pN
boolean breakWhile = false; $@f3=NJ4k
X52jqXjg
o>,z %+
while(!bStop) TD=/C|
{ 71m-W#zyA
write_nPos(); es(LE/`e
Utility.sleep(500); JFk|Uqs(
breakWhile = true; h.+&=s!Nsy
_e@qv;*
7JwWM2N?V
for(int i=0;i<nStartPos.length;i++) vi.AzO
{ ~ M>zO#U6
if(!fileSplitterFetch.bDownOver) Xm[r#IA
{ =y(YMWGS
breakWhile = false; Jn[ K0GV
break; 5pyvs ;As
} 5J#gJFA
} =FJ9wiL
if(breakWhile) *A9{H>Vq
break; %v)'`|i
O]LuL&=s y
!P^$g
R
//count++; MifgRUe
//if(count>4) s!!t
// siteStop(); =5_F9nk-
} PC7.+;1
B148wh#r
`.-k%2?/
System.err.println("文件下载结束!"); Ln%_8yth
} F"TI9ib
catch(Exception e){e.printStackTrace ();} }$c( $
} D>^ix[:J
qtwmTT)
Kj|F
//获得文件长度 #]HjP\C
public long getFileSize() ? bg pUv
{ SF=|++b1f
int nFileLength = -1; >-+X;0&
try{ Cx'=2Y 7
URL url = new URL(siteInfoBean.getSSiteURL()); kx(:Z8DX
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); VQx-gm8}!
httpConnection.setRequestProperty("User-Agent","NetFox"); P(+ar#,G
Ym2m1
54j
$A
int responseCode=httpConnection.getResponseCode(); :Lzj'Ij
if(responseCode>=400) s'=]a-l~
{ XdVC>6
processErrorCode(responseCode); Y }d>%i+
return -2; //-2 represent access is error 5h7DVr!
} }X:r:{r
S60`'!y
P.J}\;S T
String sHeader; RIc<
yiA\$mtO
41D[[Gh
for(int i=1;;i++) O]!DNN
{ >n\Q[W
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); n_2LkW<?
//Utility.log(in.readLine()); <v^.FxId
sHeader=httpConnection.getHeaderFieldKey(i); `<Nc
Y*
if(sHeader!=null) &bx,6dX
{ 1S#bV} !
if(sHeader.equals("Content-Length")) ]`m5!V_Y
{ |(g2fByDf
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 3=I Q
break; Q+N @j]'
} Ob+c*@KiW
} <[~M|OL9q,
else <O&s 'A[
break; C`K/ai{4
} _<