/* cs6I
K6wo
**SiteFileFetch.java p5PTuJ>q
*/ PS3%V_2
package NetFox; ^s[OvJb
import java.io.*; .GH#`j
import java.net.*; R<FW?z*
+Oa+G.;)o4
NP< {WL#
public class SiteFileFetch extends Thread { l7M![Ur
4!^flKZQ
QH.zsqf(
SiteInfoBean siteInfoBean = null; //文件信息Bean T3#KuiwU9
long[] nStartPos; //开始位置 "{Jq6):mp
long[] nEndPos; //结束位置 ZXL
FileSplitterFetch[] fileSplitterFetch; //子线程对象 pR*)\@ma
long nFileLength; //文件长度 "? t@Y
boolean bFirst = true; //是否第一次取文件 <oP"kh<D4
boolean bStop = false; //停止标志 "2a&G3}t"
File tmpFile; //文件下载的临时信息 p:@JC sH=
DataOutputStream output; //输出到文件的输出流 #V:28[
QXg9ah~
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) >;M?f!
public SiteFileFetch(SiteInfoBean bean) throws IOException 9Vh> ty1|_
{ whdoG{/
siteInfoBean = bean; E,g5[s@
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); @h$4M t7N
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); F4`5z)<*
if(tmpFile.exists ()) ]f<H?
{ %tC3@S
bFirst = false; ;;;{<GEQ
read_nPos(); -D-]tL6w
} UxS@]YC
else 5^ +QTQ
{ (iO8[
nStartPos = new long[bean.getNSplitter()]; 9u2Mra
nEndPos = new long[bean.getNSplitter()]; c[RkiV3
} _(.,<R5
oM4Q_A n
>L {s[pLJ
_}RzJKl@
} =i:6&Y~VGq
J0Ik@
tP;^;nw
public void run() UI}df<Ge
{ ~|t7
//获得文件长度 ^N`bA8
//分割文件 ZlxJY%oeu
//实例FileSplitterFetch s1| +LT,D
//启动FileSplitterFetch线程 r"uOf;m
//等待子线程返回 X5`#da
try{ 9u&q{I
if(bFirst) <!qv$3/7
{ 4_'($FC1
nFileLength = getFileSize(); 2&Hn%q)
if(nFileLength == -1) +o7Np|Ou
{ 7UzbS,$x
System.err.println("File Length is not known!"); X'W8 mqk
} eO?.8OM-a
else if(nFileLength == -2) 5C&]YT3)
{ A0>u9Bn"Qw
System.err.println("File is not access!"); eYD|`)-f<^
} `3KXWN`.s
else 2A^>>Q/,u
{ '.8E_Jd0E
for(int i=0;i<nStartPos.length;i++) }q~M$
{ vn0}l6n3s
nStartPos = (long)(i*(nFileLength/nStartPos.length)); *#n?6KqZ
}
4gRt^T-?
for(int i=0;i<nEndPos.length-1;i++) RO10$1IW.2
{ sVjM^y24
nEndPos = nStartPos[i+1]; ("
,(@nS
} Oi~]~+2
nEndPos[nEndPos.length-1] = nFileLength; z%cpV{Nu
} RV2s@<0p
} [EX@I
=?
/v^1/i
Aa#WhF
//启动子线程 9Nkr=/I"P
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^Cm9[1p
for(int i=0;i<nStartPos.length;i++) Vs0T*4C=n
{ 5u=(zg
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?%Pd:~4D
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), lNw8eT~2
nStartPos,nEndPos,i); D:yj#&I
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (E.,kcAJ
fileSplitterFetch.start(); OE4hGxG
} SK@%r
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Cb5Rr+K=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); C~&~Ano,
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", )`sEdVxbr
nEndPos = " + nFileLength); L9Gxqw
// fileSplitterFetch[nPos.length-1].start(); i{9_C/
snW=9b)m
,%zU5 hh
//等待子线程结束 nn0`A3
//int count = 0; :"pA0oB
//是否结束while循环 ,iQRf@#W_b
boolean breakWhile = false; p[zKc2 TPk
?k*%r;e>
=d{B.BP(
while(!bStop) 9
Z5!3
{ $%3"@$
write_nPos(); ? !dy
Utility.sleep(500); DnZkZ;E/
breakWhile = true; [1\k'5rp
!M&Qca2
PDEeb.(.
for(int i=0;i<nStartPos.length;i++) !&n'1gJ)kd
{ oJLpFL
if(!fileSplitterFetch.bDownOver) wM"PJG
{ /4}B}"`Sl=
breakWhile = false; R2 I
7d'|v
break;
<Xsy{7
} 1JFCYJy
} U^n71m>]%T
if(breakWhile) XIAHUT5~J
break; _8f?
H#&
VT;Vm3\
d*e0/#s
//count++; +@ FM~q
//if(count>4) ]hPu
// siteStop(); IgsK7wn
} ^bZ'z
%)|pUa&
ey~5DY7
System.err.println("文件下载结束!"); Lcx)wof
} j<HBzqP%6
catch(Exception e){e.printStackTrace ();} oVK3=m@{
} S{q c1qj
1j9R^
tLz,t&h
//获得文件长度 i Sm
.E
public long getFileSize() ID#p5`3n
{ m!qbQMXn
int nFileLength = -1; yFYFFv\?
try{ z;dFS
URL url = new URL(siteInfoBean.getSSiteURL()); 3Dd"qON!
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ZJ$nHS?ra
httpConnection.setRequestProperty("User-Agent","NetFox"); R8*z}xy{
"
aEk#W
G=.vo3
int responseCode=httpConnection.getResponseCode(); ^{IF2_h"
if(responseCode>=400) 3($ cBC
{ $E j;CN59
processErrorCode(responseCode); $mV1K)ege
return -2; //-2 represent access is error 907N;r
} q$|Wxnz
vSOO[.=
NM`5hd{
String sHeader; :oYz=c
h2b,(
zXop@"(e
for(int i=1;;i++) 8R) 0|v&;
{ j>{Dbl:#2
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); cILI%W1
//Utility.log(in.readLine()); A*$JF>`7
sHeader=httpConnection.getHeaderFieldKey(i); j;GH|22
if(sHeader!=null) JBYmy_Su
{ %z0;77[1 I
if(sHeader.equals("Content-Length")) )\qA[rTG
{ C
V{kP8#
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); . paA0j
break; -&Cb^$.-x
} ","O8'$OC
} Hd/|f;
else YT*_
vmJV
break; bc?\lD$$
} {Tps3{|wt
} >o]!-46
catch(IOException e){e.printStackTrace ();} R 2{ kS
catch(Exception e){e.printStackTrace ();} al<;*n{/
>{seaihK
OzVCqq"]
Utility.log(nFileLength); O3YD
jas
VP7g::Ab
}f~:>N#
return nFileLength; + Z7 L&BI
} MsaD@JY.y
R;G"LT
%M=Ob k
//保存下载信息(文件指针位置) P?#I9y7iP
private void write_nPos() /#lqv)s'
{ StuQ}
try{ r@O5{V
output = new DataOutputStream(new FileOutputStream(tmpFile)); m#i5}uHHg
output.writeInt(nStartPos.length); DFk0"+Ky
for(int i=0;i<nStartPos.length;i++) m=qEQy6#2u
{ B$Z%_j&
// output.writeLong(nPos); z154lY}K
output.writeLong(fileSplitterFetch.nStartPos); u{6b>c|,X
output.writeLong(fileSplitterFetch.nEndPos); .+@;gVZx1
} XtJIaD|:3
output.close(); ^5MPK@)c,/
} !a.|URa7
catch(IOException e){e.printStackTrace ();} yGxAur=dE
catch(Exception e){e.printStackTrace ();} (R9{wGV [
} kK,Ne%}a2K
V!{}%;f
+2KYtyI
//读取保存的下载信息(文件指针位置) Ao0p=@Y
private void read_nPos() ~$WBc qo
{ cbton<r~
try{ Z8Jrt3l{2
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); )wt mc4'
int nCount = input.readInt(); R7nT,7k.
nStartPos = new long[nCount]; '4"9f]:
nEndPos = new long[nCount]; `X:o]t@
for(int i=0;i<nStartPos.length;i++) DL t "cAW
{ FQ3{~05T
nStartPos = input.readLong(); RZ6[+Ygn
nEndPos = input.readLong(); b-`=^ny)K
} /O^aFIxk
input.close(); '[Ue0r<jn
} [f1'Qb
catch(IOException e){e.printStackTrace ();} Fv<^\q
catch(Exception e){e.printStackTrace ();} Fx3CY W
} F3%8E<QZd;
-lb,0
5}+&Em":
private void processErrorCode(int nErrorCode) YLx4qE
{ lWR".
System.err.println("Error Code : " + nErrorCode); d
:a*;F
} RCL}bE
-](NMRqfN
C'wRF90
//停止文件下载 0E<