/* C)UU/4a;
**SiteFileFetch.java DbtkWq%
*/ 6\.LG4@LO
package NetFox; \'|t>|zhp
import java.io.*; Vi0D>4{+
import java.net.*; ikb77?.
\((5Sd
B@ msGb C
public class SiteFileFetch extends Thread { tCA0H\';
yf-2E_yB
(T&(PCw|
SiteInfoBean siteInfoBean = null; //文件信息Bean s0Z)BR #
long[] nStartPos; //开始位置 P:%b[7
long[] nEndPos; //结束位置 'MNCJ;A@V
FileSplitterFetch[] fileSplitterFetch; //子线程对象 g`tV^b")
long nFileLength; //文件长度 "D
KrQ,L
boolean bFirst = true; //是否第一次取文件 Md8<IFi9]Q
boolean bStop = false; //停止标志 @xBO[v
File tmpFile; //文件下载的临时信息 <Q`3;ca^
DataOutputStream output; //输出到文件的输出流 [$:L|V!{
]Zc\si3i&
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /s+S\
djk
public SiteFileFetch(SiteInfoBean bean) throws IOException @gM}&G08
{ xVN!w\0
siteInfoBean = bean; 3Wx\Liw,
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); C@<gCM j,"
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #7}YSfm^6
if(tmpFile.exists ()) FU.?n)P
{ F[W0gjUc
bFirst = false; 8!@}\6qM
read_nPos(); *O\lR-z!k
} SUW=-M
else A>HCX 4i
{ 7W5Cm\
nStartPos = new long[bean.getNSplitter()]; 3-kL0Q["
nEndPos = new long[bean.getNSplitter()]; sYvlf0
} vo2GFo
@2-;,VL3
m}S}fH(
W5~!)Ec
} ?{5}3abB`
PSX
o"
kg,\l9AM
public void run() u,N<U t
{ ]1W]
//获得文件长度 "<%J^Z9G
//分割文件 8#o2 qQ2+
//实例FileSplitterFetch \w(0k^<7
//启动FileSplitterFetch线程 ;qr?[{G
//等待子线程返回 */K]sQZa
try{ v"o@q2f_
if(bFirst) 3preBs#i
{ BMV\@Sg
nFileLength = getFileSize(); |sP0z !)b
if(nFileLength == -1) U;"J8
{
C?'s
System.err.println("File Length is not known!"); s<aG
} ]9JH.fF
else if(nFileLength == -2) !$!%era`
{
o)DO[
System.err.println("File is not access!"); V7O7"Q^q
}
:Gx5vo
else n[# **s
{ 7VWy1
for(int i=0;i<nStartPos.length;i++) ra_v+HR7
{ j'hWhLax
nStartPos = (long)(i*(nFileLength/nStartPos.length)); I:YgKs)[
} J8Vzf$t};
for(int i=0;i<nEndPos.length-1;i++) acQHqR
{ *Tr{a_{~C
nEndPos = nStartPos[i+1]; 8F's9c,
} } j;es(~D
nEndPos[nEndPos.length-1] = nFileLength; EQ|Wke
} L.}sN.
} "*(a2k3J
~ tN/
BglbQ'6p
//启动子线程 UISsiiG(
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; up0=Y
o@
for(int i=0;i<nStartPos.length;i++) v$g\]QS
p
{ )@y7 qb
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Fdq5:v?k
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !C^>tmqS
nStartPos,nEndPos,i); IR;3{o
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *&R|0I{>
fileSplitterFetch.start(); x-4d VKE*z
} v$5D&Tv
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), vz1I/IdTd
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); #TH(:I=[
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", .C ,dV7
nEndPos = " + nFileLength); Ae"|a_>fMI
// fileSplitterFetch[nPos.length-1].start(); #uICHt3
JeA_mtSQ|
K]|hkp&
//等待子线程结束 3*(><<ZC
//int count = 0; yx ;K&>
//是否结束while循环 +kD JZ
boolean breakWhile = false; S;%k?O7v
J Rj{Q 1J
:hR^?{9Z4>
while(!bStop) R|wS*xd ,
{ xj3{Ke`6
write_nPos(); FT J{
Utility.sleep(500); p1mAoVxR
breakWhile = true; k72NXagh
\$F#bIjC
`@vksjxu
for(int i=0;i<nStartPos.length;i++) [~`p~@\+
{ P4|A\|t
if(!fileSplitterFetch.bDownOver) RUVrX`u*(
{ <p2\;\?4z
breakWhile = false; l7IF9b$c
break; MIWc
@.i2
} >xsY"N&1i'
} A* Pz-z>z
if(breakWhile) NGO?K?
break; 8qxZ7|Y@
|Z+qaq{X
%P(2uesd
//count++; Py/~Q-8p
//if(count>4) 8=?U7aw
// siteStop(); "I{Lcn~!@
} j7NOYm5N
z92Xc
!:tr\L {
System.err.println("文件下载结束!"); <JvYCWX`
} cjd-B:l
catch(Exception e){e.printStackTrace ();} S?VKzVDB.S
} 7-\wr^ll3
y>d`cRy
U!JmSP
//获得文件长度 Vh]=sd<F
public long getFileSize() <yvo<R^30
{ B[+b%a3
int nFileLength = -1; u^WZsW
try{ _x,(576~
URL url = new URL(siteInfoBean.getSSiteURL()); /ZH* t \
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); C 20VSwd
httpConnection.setRequestProperty("User-Agent","NetFox"); 8E9k7
CoWT
JRAU|gr
int responseCode=httpConnection.getResponseCode(); 4E1j0ARQQ
if(responseCode>=400) F5M|QX@-
{ 9F~5Ht
processErrorCode(responseCode); dP]Z:
return -2; //-2 represent access is error !X-ThKEq
} eiRVw5g
%/hokyx
R$+"'N6p
String sHeader; SbsdunW+?
QXEZ?gx
|W&K@g$
for(int i=1;;i++) EZhk(LE
{ mGoC8t}iP
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); mD*!<<Sw
//Utility.log(in.readLine()); yD8Qy+6L
sHeader=httpConnection.getHeaderFieldKey(i); \{ C
~B;=
if(sHeader!=null) q^<;B Y
{ :R$v7{1
if(sHeader.equals("Content-Length")) MiF(
&#
{ 'A1y~x#2B
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); N4{g[[ T
break; -Y N(j\
} !vHCftKel
} Hd
gABIuX
else &?}h)U#:
break; wOrj-Smx
} %?8.UW\m
} fWDTP|DV
catch(IOException e){e.printStackTrace ();} zgn`@y2
catch(Exception e){e.printStackTrace ();} <7/7+_y
.t{uzDM
N%u4uLP5k
Utility.log(nFileLength); _eH@G(W(
GSH,;cY
BAT.>
return nFileLength; l}#d^S/
} pK/RkA1
yWr&G@>G
%L-{4Z!"sI
//保存下载信息(文件指针位置) fQ_tXY
private void write_nPos() -Q ];o~
{ T ~p>Ed 9
try{ NvpDi&i
output = new DataOutputStream(new FileOutputStream(tmpFile)); OGq=OW
output.writeInt(nStartPos.length); 1 7iw`@
for(int i=0;i<nStartPos.length;i++) Y'R/|:YL@
{ +j$nbU0U
// output.writeLong(nPos); k9VWyq__
output.writeLong(fileSplitterFetch.nStartPos); |>>^Mol
output.writeLong(fileSplitterFetch.nEndPos); ^nQJo"g\
} %0f*OC
output.close(); uF)^mT0D=
} ``kesz
catch(IOException e){e.printStackTrace ();} :cP u
catch(Exception e){e.printStackTrace ();} Dr}elR>~G=
} SLvo)`Nc3-
\fYPz }wt
X[?E{[@Z
//读取保存的下载信息(文件指针位置) [:A">eYI
private void read_nPos() 2%`8
{ 8Kn}o@Yd
try{ ICTjUQP
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); N2u4MI2
int nCount = input.readInt(); $ylxl"Y
nStartPos = new long[nCount]; NxFCVqGb
nEndPos = new long[nCount]; FE1En
for(int i=0;i<nStartPos.length;i++) v)*eLX$
{ a"k,x-EL(
nStartPos = input.readLong(); Ct3+ga$
nEndPos = input.readLong(); "#Q"gC.K
} u =(.}
input.close(); 4%<D\#
} nGTqW/k[+s
catch(IOException e){e.printStackTrace ();} Fg2/rC:_
catch(Exception e){e.printStackTrace ();} cn9=wm\\
} E6- ~
&G3$q,`H
GB6(WAmr
private void processErrorCode(int nErrorCode) +>%AG&Pc
{ 'sk M$jr
System.err.println("Error Code : " + nErrorCode); li}>xDSQ4
} ZalL}?E
?
W,nn,%
1X?q4D"
//停止文件下载 \PmM856=ms
public void siteStop() H;FzWcm
{ P1`YbLER5
bStop = true; QX.U:p5C
for(int i=0;i<nStartPos.length;i++) eN m
Wul
fileSplitterFetch.splitterStop(); KXu1%`x=%Z
XhOg>
mt-t8~A
} =]<X6!0mR
} u:^9ZQ+
//负责部分文件的抓取 ^)3=WD'!
**FileSplitterFetch.java ,^@/I:
*/ XKT[8o<L
package NetFox; \@_?mL@=
SMQC/t]HT
$@WA}\D
import java.io.*; :1#$p
import java.net.*; fs#9*<]m
Q:Y`^jP
}<