/* }#;.b'`
**SiteFileFetch.java *>`6{0,9
*/ {;th~[
package NetFox; z,hBtq:-$
import java.io.*; ir>S\VT4
import java.net.*; Vugb;5Vl
Vr d16s
yyk@f%
public class SiteFileFetch extends Thread { fFoZ!H
LE)$_i8gX
)Z|G6H`c3
SiteInfoBean siteInfoBean = null; //文件信息Bean QN?EI:
q=
long[] nStartPos; //开始位置 ^16zZ*
long[] nEndPos; //结束位置 R# .H&#
FileSplitterFetch[] fileSplitterFetch; //子线程对象 S{v]B_N[M
long nFileLength; //文件长度 RnU7|p{
boolean bFirst = true; //是否第一次取文件 o2hk!#5[4
boolean bStop = false; //停止标志 [c lwmx
File tmpFile; //文件下载的临时信息 A|]#b?-
DataOutputStream output; //输出到文件的输出流 #_`qbIOAj
eMdf[eS
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类)
hSXJDT2
public SiteFileFetch(SiteInfoBean bean) throws IOException Jf0i$
{ |:Maa6(W
siteInfoBean = bean; 0*9xau{(
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); s[dIWYs#
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [k(b<'
if(tmpFile.exists ()) KF5r?|8M
{ @|sBnerE
bFirst = false; m2YsE
j7
read_nPos(); U* c'xoP
} -'L~Y~'.
else ,Vo[mB
{ ~)`\j
nStartPos = new long[bean.getNSplitter()]; n)Cr<^j
nEndPos = new long[bean.getNSplitter()]; aG]^8`~>'
} }%jpqip
1X`,7B@pz
bq8Wvlv04
>M!LC
} s$(%?,yf2
lhnGk'@d
bBXLW}W
public void run() `W" ;4A
{ O9o ]4;
//获得文件长度 S0gxVd(
//分割文件 h^qZi@L
//实例FileSplitterFetch %W2U$I5
//启动FileSplitterFetch线程 f[.'V1
//等待子线程返回 rlawH}1b
try{ A%7f;&x!
if(bFirst) hW/Ve'x[
{ diVg|Z3T
nFileLength = getFileSize(); H?a $o(
if(nFileLength == -1) 1E'PSq
{ ,!GoFu
System.err.println("File Length is not known!"); 2K
o]Q_,~
} r>i95u82'
else if(nFileLength == -2) 4zt:3bWU
{ HB$?}V
System.err.println("File is not access!"); 12hD*,A5j
} EY3F9h3xM|
else 4\p%|G^hU
{ CY{!BV'
for(int i=0;i<nStartPos.length;i++) 8O(L;&h
{ tLN^k;w
nStartPos = (long)(i*(nFileLength/nStartPos.length)); q86}'dFw{
} z$}9f*W}B
for(int i=0;i<nEndPos.length-1;i++) :ir3u
{ YTmHht{j#
nEndPos = nStartPos[i+1]; \%bJXTK&W
} @Tq-3Um
nEndPos[nEndPos.length-1] = nFileLength; Lj#xZ!mQS
} GvgTbCxnN
} r}^1dO
3A[<LnKR^E
N{&Lo}6F
//启动子线程 x4g/ok
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9wGsHf8]
for(int i=0;i<nStartPos.length;i++) X%&7-PO
{ S
w%6-
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V=th-o3[
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), FE^/us7r
nStartPos,nEndPos,i); GG<0k\RN
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); U{bv|vF
fileSplitterFetch.start(); &7>]# *
} *| W*Mu
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), G!=(^G@J;
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); s3y GL
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ",
Skr0WQ
nEndPos = " + nFileLength); }Y BuS3{
// fileSplitterFetch[nPos.length-1].start(); -sZ'<(3
Fw{#4
dT% eq7=
//等待子线程结束 BBGub?(dR
//int count = 0; +F60_O
`
//是否结束while循环 Hm!"%
boolean breakWhile = false; ;~djbo0,X
Uf]$I`T#
nTD%i~t~o
while(!bStop) 2p#d
{ &z5?]`ALu
write_nPos(); 1%R${Qhr
Utility.sleep(500); ebNRZJ?C,
breakWhile = true; m[Ihte->
0*tnJB
MN5}}@
for(int i=0;i<nStartPos.length;i++) k\;D;e{
{ mAGD qz>f
if(!fileSplitterFetch.bDownOver) lo'#dpt<
{ Mp!1xx
breakWhile = false; aXQAm$/
>
break; '0)`.
} 3)LS#=
} a9.255
if(breakWhile) [g<gu~
break; ;<''oY
rP2h9Cb
X[H .t$w5A
//count++; 7-n HPDp'
//if(count>4) V9}\0joM
// siteStop(); dY0W=,X$7T
} dmv0hof
?E
V^H-rr
@lWNSf
System.err.println("文件下载结束!"); x|Pz24yP9
} IemhHf ^l
catch(Exception e){e.printStackTrace ();} 4q7H
} 4|I;z
Ja4M@z
&v1E)/q{Z
//获得文件长度 }` H{;A
h
public long getFileSize() NS`hXf
{ Bw!J!cCj
int nFileLength = -1; &Ejhw3Nw
try{ bpU>(j
URL url = new URL(siteInfoBean.getSSiteURL()); cZF|oZ6<
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @4Bl&(3S
httpConnection.setRequestProperty("User-Agent","NetFox"); Xf#;`*5
:E|Jqi \
"nfi:A1
int responseCode=httpConnection.getResponseCode(); ,X:3w3nr^
if(responseCode>=400) x7^VU5w#
{ SSla^,MHef
processErrorCode(responseCode); 2dKt}o>
return -2; //-2 represent access is error ^z{Xd|{"
} l59
N0G
m-tn|m!J
btnD+O66<
String sHeader; \),f?f-m
u$zRm(!RB
:=+YZ|&j
for(int i=1;;i++) a3w6&e`
{ K;rgLj0m
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); yS4VgP'W
//Utility.log(in.readLine()); i M
MKA0JM
sHeader=httpConnection.getHeaderFieldKey(i); e1JHN
if(sHeader!=null) lg2I|Z6DH
{ [\<#iRcP
if(sHeader.equals("Content-Length")) 8au Gz
,"
{ [_3&
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Zos.WS#
break; 0QPY+6
}
`+vQ5l$;L
} *,:2O&P
else RFFbS{U*
break; g@s`PBF7`
} ,YBO}l
} )p;t
'*]
catch(IOException e){e.printStackTrace ();} 8EdaqF
catch(Exception e){e.printStackTrace ();} +e*C`uP!
J?dz>3Rhx9
3)o>sp)Ji$
Utility.log(nFileLength); [.xc`CF
3]lq#p:
RdyKd_0`Q
return nFileLength; }|) N5bGQe
} 4ME$Z>eN
<*^|Aj|#
kb"Fw:0
//保存下载信息(文件指针位置) s?S e]?i
private void write_nPos() F@Wi[K
{ ?q Q.Wj6Mj
try{ "[fPzIP9
output = new DataOutputStream(new FileOutputStream(tmpFile)); fr04nl
output.writeInt(nStartPos.length); ;vPFRiFK
for(int i=0;i<nStartPos.length;i++) K
re*~ "
{ eFf9T@
// output.writeLong(nPos); SEg{Gso9b
output.writeLong(fileSplitterFetch.nStartPos); we!w5./Xm
output.writeLong(fileSplitterFetch.nEndPos); T]1.":
} ujBm"p_|
output.close(); F !OD*]
} `^on`"\{u
catch(IOException e){e.printStackTrace ();} eY?OUS
catch(Exception e){e.printStackTrace ();} ZBx,'ph}4
} F 2zUz[
)G, S7A
kCz2uG)l
//读取保存的下载信息(文件指针位置) /y4A?*w 6
private void read_nPos() 6(htpT%J
{ CKe72OC
try{ HN/YuP03[
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); NYg&