/* #`K {vj
**SiteFileFetch.java >Bdh`Ot-!
*/ o`7 Z<HF
package NetFox; ZH>i2|W<
import java.io.*; T\=#y
import java.net.*; Zs-lN*u7.
(\r^0>H
/0fHkj/J=B
public class SiteFileFetch extends Thread { 9vwm
RVN
[F;\NJp6?^
mE>{K
SiteInfoBean siteInfoBean = null; //文件信息Bean E`hR(UL
?
long[] nStartPos; //开始位置 euRKYGW
long[] nEndPos; //结束位置 GRVF/hPn
FileSplitterFetch[] fileSplitterFetch; //子线程对象 W\5 -Yg(@
long nFileLength; //文件长度 mpVD;)?JmM
boolean bFirst = true; //是否第一次取文件 %;= ?r*]
boolean bStop = false; //停止标志 3;wiwN'
File tmpFile; //文件下载的临时信息 N`3^:EJL8
DataOutputStream output; //输出到文件的输出流 fR+{gazk
n
Doq}UWp
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) KhX)maQ
public SiteFileFetch(SiteInfoBean bean) throws IOException fE&s 6w&
{ nt-_)4Fm
siteInfoBean = bean; r:E4Wi{\
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }[drR(]`dO
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); _8F;-7Sz
if(tmpFile.exists ()) R$A%Zh6
{ W=LJhCpRHj
bFirst = false; nm]lPK U+Y
read_nPos(); sDTw</@
} aJF/y3
else ~ qaT
jSP
{ v6[VdWOx5
nStartPos = new long[bean.getNSplitter()]; 3/uvw>$
nEndPos = new long[bean.getNSplitter()]; LHu
} +Wy `X5v
|:4?K*w",
],~[ ^0
8faT@J'e;
} $<C",&
iQT0%WaHl
}~ N\A
public void run() Ea'jAIFPpO
{ \/gf_R_GN
//获得文件长度 bb\XZ~)F
//分割文件 3 |LRb/|
//实例FileSplitterFetch :D;pD l
//启动FileSplitterFetch线程 .3XiL=^~Qp
//等待子线程返回 rnp; R
try{ /0Qo(
if(bFirst) *O @Zn
{ !b4AeiL>w
nFileLength = getFileSize(); @,;h!vB*=
if(nFileLength == -1) m|x_++3
{ |`Yn'Mj8rm
System.err.println("File Length is not known!"); {Oq8A.daJ
} Ruq>+ }4
else if(nFileLength == -2) 8t, &dq
{ RW1+y/#%P
System.err.println("File is not access!"); v6Y[_1
} R^sgafGl=
else Z(tO]tQE
{ ZNk[Jn
[.
for(int i=0;i<nStartPos.length;i++) ,/TmTX--d
{ NZADHO@0
nStartPos = (long)(i*(nFileLength/nStartPos.length)); I|K!hQ"m
} :oC;.u<*8
for(int i=0;i<nEndPos.length-1;i++) *8;<w~
{ <1m`
nEndPos = nStartPos[i+1]; o"L8n(\
} *n#
=3D
nEndPos[nEndPos.length-1] = nFileLength; %6^nb'l'C
} Qb%;
|li
} hNkv lk'Ui
Vm8dX?
"oFi+']*
//启动子线程 y;4g>ma0
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 3
Fy CD4#
for(int i=0;i<nStartPos.length;i++) HINk&)FC
{ ]q[(z
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gW4fwE^
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), l,(:~KH|
nStartPos,nEndPos,i); 4}cxSl]jf!
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); E4Ez)IaKyi
fileSplitterFetch.start(); |;t{L^
} t0v>J9
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7r)]9_[(
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); !O}e)t
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", _h,_HW)G
nEndPos = " + nFileLength); 3fXrwmBT8
// fileSplitterFetch[nPos.length-1].start(); ].aFdy
0kls/^ 0,
$)PS#ND&
//等待子线程结束 n_ ?+QF
//int count = 0; ,O-_Pv
//是否结束while循环 Rbr:Q]zGN
boolean breakWhile = false; gi5X,:[
m^m=/'<+
*icaKy3
while(!bStop) n+Conp/
{ QJiH^KY6
write_nPos(); x5pu+-h
Utility.sleep(500); `'3 De(
breakWhile = true; c(FGW7L<
-r_\=<(
jOGiT|A
for(int i=0;i<nStartPos.length;i++) 1=sL[I 7<
{ @|">j#0
if(!fileSplitterFetch.bDownOver) C"0
VOb
{ )D'#>!Y
breakWhile = false; vfx{:3fO
break; |wQ3+WN|
} sKR%YK
"A
} ;V?(j3b[
if(breakWhile) 0.nkh6?
break; {%^4%Eco
$?gKIv>g
kRb JK
//count++; ;pOV; q3j
//if(count>4) n&|N=zh
// siteStop(); B^zg#x#8
} 1uG)U)y/Q
\pTC[Ry1
^4Xsd h5
System.err.println("文件下载结束!"); {YrA[9
} i!3*)-a\~`
catch(Exception e){e.printStackTrace ();} oAB:H\
} `nEqw/I
r)Zk- !1
./0wt+
//获得文件长度 AS~!YR
public long getFileSize() .H qJ)OH
{ <ME>#,
int nFileLength = -1; BzWkZAX
try{ ?2,D-3 {
URL url = new URL(siteInfoBean.getSSiteURL()); 0o6o<ggi
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /dvronG
httpConnection.setRequestProperty("User-Agent","NetFox"); ,g*3u
=-GxJPL
~Jsu"kr
int responseCode=httpConnection.getResponseCode(); y\-iGKz{0
if(responseCode>=400) /Ix5`Q)
{ ~dLbhjden
processErrorCode(responseCode); '|5o(6u'
return -2; //-2 represent access is error @.}Y'`9L
} /%p
~
QOrMz`OA
$""kZ
String sHeader; /iQh'rp
J>;r(j
`r3 klL,W'
for(int i=1;;i++) bXXX-Xc
{ gYk5}E-
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 6o9&FU
//Utility.log(in.readLine()); R ;A8y
sHeader=httpConnection.getHeaderFieldKey(i); \{~CO{II
if(sHeader!=null) dvZlkMm
{ ]F>#0Rdc
if(sHeader.equals("Content-Length")) eK*oV}U-k
{ K4]ZVMm/*
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); `D=`xSEYl
break; UhkL=+PD
} ?YV#
K
} `T7TWv"M
else `l.bU3C
break; I2SH
j6-
} o&z [d
} hDZyFRg
catch(IOException e){e.printStackTrace ();} v.>K
)%`#
catch(Exception e){e.printStackTrace ();} lVd-{m)
;
2V$`k
!hS)W7!ik
Utility.log(nFileLength); OU#p^5K
94t`&jZ&|u
6d/v%-3
return nFileLength; +s;Vfc$b]H
} xWK/uE (
kz6fU\U
B3?rR-2mEE
//保存下载信息(文件指针位置) {^uiu^RAc
private void write_nPos() jAy2C&aP
{ AcXVfk z
try{ *vIP\NL?H
output = new DataOutputStream(new FileOutputStream(tmpFile)); 2*#i/SE_
output.writeInt(nStartPos.length); :?FHqfN?_
for(int i=0;i<nStartPos.length;i++) W ;+()vC
{ /]-yZ0hX0O
// output.writeLong(nPos); :Mh\;e
output.writeLong(fileSplitterFetch.nStartPos); /cUu]#h
output.writeLong(fileSplitterFetch.nEndPos); _FcTY5."S
} UHU ,zgM
output.close(); ZUS5z+o
} xaoR\H
catch(IOException e){e.printStackTrace ();} (&r`
l&0
catch(Exception e){e.printStackTrace ();} c|aX4 =Z
} W(4$.uZ)
Zby3.=.e
pYr+n9)^
//读取保存的下载信息(文件指针位置) zks7wt]A
private void read_nPos() LYd:S
{ Y`4 LMK[]
try{ ) )FLM^dj
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); &y