/* A&$!s)8z
**SiteFileFetch.java <^R\N#
*/ aC]~
package NetFox; ?P<&8eY
import java.io.*; )prpG !
import java.net.*; GK95=?f~8;
&BG^:4b
}O2hhh_
public class SiteFileFetch extends Thread { O~{Zs\u9
g.DgJX&i
GPP~*+n
SiteInfoBean siteInfoBean = null; //文件信息Bean QlJCdCSy
long[] nStartPos; //开始位置 "uGJ\
long[] nEndPos; //结束位置 J9/9k
FileSplitterFetch[] fileSplitterFetch; //子线程对象 s]L`&fY]O
long nFileLength; //文件长度 *X %`MN
boolean bFirst = true; //是否第一次取文件 }-zx4<4BH
boolean bStop = false; //停止标志 x 9Gm)~
File tmpFile; //文件下载的临时信息 Ip8 Ap$
DataOutputStream output; //输出到文件的输出流 *2MUG
h
Q;m
.m2
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x18ei@c
public SiteFileFetch(SiteInfoBean bean) throws IOException b44H2A.
{ >P\Tnb"Q\
siteInfoBean = bean; FX}<F0([?
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); %|SbZ)gcQ
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ,>{4*PM(
if(tmpFile.exists ()) X?>S24I"9
{ tjDVU7um
bFirst = false; ed{z^!w4
read_nPos(); }5Y.N7F
} b\=0[kBQw
else ;a{ Dr
{ C9gF2ii|?
nStartPos = new long[bean.getNSplitter()]; )KXLL;]
nEndPos = new long[bean.getNSplitter()]; +]uy
} !G\1$"T$
T%P0M*
{:6VJ0s\
px4Z
} K/MIDH
nn#A-x}~;b
jq.@<<j|$
public void run() ,e.y4
vnU
{ N:L<ySJ7
//获得文件长度 eDaVoc3
//分割文件 $23="Jcl
//实例FileSplitterFetch 2$\1v*:
//启动FileSplitterFetch线程 v#-%_V>ph
//等待子线程返回 y9W*/H{[`
try{ U?#6I-
if(bFirst) ,Oxdqx u7
{ @Z3b^G[
nFileLength = getFileSize(); 6K`frt
if(nFileLength == -1) "ajZ&{Z
{ 7t@jj%F
System.err.println("File Length is not known!"); mXhr: e
} E8%O+x}
else if(nFileLength == -2) +"'h?7'C
{ ,j&o H$mW
System.err.println("File is not access!"); z W+wtYV4
} ,0-
else 4RTEXoXs
{ "DRp4;
for(int i=0;i<nStartPos.length;i++) F<'g6f
{ :+E>UzT
nStartPos = (long)(i*(nFileLength/nStartPos.length)); lV]l`$XI
} 'J!P:.=a>
for(int i=0;i<nEndPos.length-1;i++) Onot<}K
{ *:YW@Gbm
nEndPos = nStartPos[i+1]; SvI
} /x$ jd)C
nEndPos[nEndPos.length-1] = nFileLength; o"[qPZd>
} OY[N%wr!
} 7F+f6(hB
xg3G
$#t&W&
//启动子线程 3l4k2
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ]j1BEO!Bg
for(int i=0;i<nStartPos.length;i++) $#KSvo{otI
{ y99G 3t
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7RdL/21K
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), N.&)22<m9
nStartPos,nEndPos,i); uX.Aq@j
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); {Ziq~{W_
fileSplitterFetch.start(); X^aujK^@
} yGS._;#R
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), T( ;BEyc?
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Oh8;YE-%
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |$1j;#h
nEndPos = " + nFileLength); g{<3*,
// fileSplitterFetch[nPos.length-1].start(); anl?4q3;9
!_x-aro3<
xss D2*l
//等待子线程结束 apw8wL2
//int count = 0; t`F%$q
//是否结束while循环 DK4V/>@8
boolean breakWhile = false; xhimRi
&3u*
zV$
Yt|{l
while(!bStop) i ;X'1TN(y
{ hKX-]+6"
write_nPos(); }r,k*I'K
Utility.sleep(500); u!g<y
breakWhile = true; VK$+Nm)
N:&^ql4
*a$z!Ma3h
for(int i=0;i<nStartPos.length;i++) rRsLl/d
{ u_:"
u
if(!fileSplitterFetch.bDownOver) 7&T1RB'>
{ u9VJ{F
breakWhile = false; Y9PG
break; 6'qs=Ql
} B&.XGo)
} B3I<
$
if(breakWhile) j\Q_NevV
break; 3!*J;Y
yq;gBIiZ
lIOLR-:4j
//count++; )9@Ftzg|
//if(count>4) T_B$
// siteStop(); noL<pkks~R
} Dk[[f<H_{
lT$A;7[
U)c,ZxE
System.err.println("文件下载结束!"); s q :ff
} pLk?<y
catch(Exception e){e.printStackTrace ();} t,=khZ
} u1>| 2D
N$_Rzh"9rr
eb+[=nmP
//获得文件长度 5ue{&z
@T
public long getFileSize() 81aY*\
{ ^Z}INUv]7
int nFileLength = -1; iL5+Uf)E3
try{ seq
S*^7
URL url = new URL(siteInfoBean.getSSiteURL()); Kb4u)~S:
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); NCl={O9<j
httpConnection.setRequestProperty("User-Agent","NetFox"); \UN7lDH
>gVR5o
KeXQ'.x5O
int responseCode=httpConnection.getResponseCode(); 0!!pNK%(
if(responseCode>=400) JO1c9NyKr
{ .\1XR
processErrorCode(responseCode); xT=|Uc0
return -2; //-2 represent access is error w3yI;P
} [g<6i.<I
BBy/bc!
8HTV"60hTs
String sHeader; oYqlN6n,=6
^#"!uCq]gM
oOJN?97!k
for(int i=1;;i++) E#_}y}7JY
{ rY($+O@a<
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); %iF<
px?Vc
//Utility.log(in.readLine()); qY0GeE>N
sHeader=httpConnection.getHeaderFieldKey(i); %]
if(sHeader!=null) 8tPq5i
{ Q=w\)qJ
if(sHeader.equals("Content-Length")) )e{~x
u
{ 6AzH'HF
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); uZW1
:cx
break; H\)on"
} Ym0Xl(Se
} (MbI8B>
else Oja)J-QXb
break; 2:2rwH }e
} ;XGG&M%3
} V&NOp
catch(IOException e){e.printStackTrace ();} ^$yr-p%-
catch(Exception e){e.printStackTrace ();} G?8,&jP~T
CXJ0N
Ku&0bXP
Utility.log(nFileLength); 6C) G
v>0xHQD*<M
TX8,+s+
return nFileLength; @\[&_DZ
} %.[GR
>dZ x+7
eGnc6)x@C
//保存下载信息(文件指针位置) 0} HKmEM
private void write_nPos() ks'25tv}F
{ SOeL@!_
try{ v#D9yttO{
output = new DataOutputStream(new FileOutputStream(tmpFile)); SAXjB;VH6
output.writeInt(nStartPos.length); f'R^MX2
for(int i=0;i<nStartPos.length;i++) ~@L$}Eu
{ PZH]9[H
// output.writeLong(nPos); W^al`lg+y
output.writeLong(fileSplitterFetch.nStartPos); 0nA17^W
output.writeLong(fileSplitterFetch.nEndPos); hC5ivJ
} GQ)h Zt0
output.close(); 8M:;9a8fh
} R-hqaEB
catch(IOException e){e.printStackTrace ();} Z/56JYt!~
catch(Exception e){e.printStackTrace ();} g4%x7#vz0
} &