/* aU +uPP
**SiteFileFetch.java D3 +|Os)
*/ e+Mm!\;`
package NetFox; SN[yC
import java.io.*; $hJ 4=F
import java.net.*; ]nV_K}!w
jMWTNZ
6;Izw$X
public class SiteFileFetch extends Thread { !U5Cwq
svo%NQ
k!qOE\%B
SiteInfoBean siteInfoBean = null; //文件信息Bean 1\-lAk!
long[] nStartPos; //开始位置 !b K;/)
long[] nEndPos; //结束位置 #/(L.5d[
FileSplitterFetch[] fileSplitterFetch; //子线程对象 .}R'(gN\6
long nFileLength; //文件长度 mFpj@=^_G
boolean bFirst = true; //是否第一次取文件 -[=@'NP
boolean bStop = false; //停止标志 /;TD n>lq
File tmpFile; //文件下载的临时信息 %LdBO1D0
DataOutputStream output; //输出到文件的输出流 VKXB)-'L
"
d~M\Az
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) r+]a
public SiteFileFetch(SiteInfoBean bean) throws IOException Qc9[/4R>
{ z,qNuv"W
siteInfoBean = bean; :'H}b*VWx
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); -K^(L#G
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); |Qpo[E}a
if(tmpFile.exists ()) ;(g"=9e
{ D_f:D^
bFirst = false; K=sk1<>)m
read_nPos(); ciHTnC
} Exi#@-
else >hnhV6ss
{ O> wGJ.
nStartPos = new long[bean.getNSplitter()]; 5*"WS $
nEndPos = new long[bean.getNSplitter()]; ) \cnz
} R8% u9o
y(Pv1=e
1{xkAy0
odeO(zuU
} 0,LUi*10
8r.MODZG/
U$ZbBVa`~
public void run() @bFl8-
{ 9mv6
//获得文件长度 TTxSl p2=;
//分割文件 j,_{f =3;
//实例FileSplitterFetch f`J[u!Ja
//启动FileSplitterFetch线程 s;[64ca]Q
//等待子线程返回 7z&^i-l.
try{ \Zk<|T61$
if(bFirst) ^^Q>AfTR.
{ 9Xh<vh8&
nFileLength = getFileSize(); ,(yaWd6
if(nFileLength == -1) n<[H!4
{ -fz( ]d
System.err.println("File Length is not known!"); {>&M:_`k
} KC\W6|NtGj
else if(nFileLength == -2) T6,6lll
{
2IDn4<`
System.err.println("File is not access!"); 6`'K M/
} \cAifU
else ,+g0#8?p^x
{ sMw"C~XL
for(int i=0;i<nStartPos.length;i++) }Oy/F
{ .O4=[wE!U
nStartPos = (long)(i*(nFileLength/nStartPos.length)); `O,"mm^@U
} 0c#|LF_
for(int i=0;i<nEndPos.length-1;i++) w4&-9[@Y
{ ,S3uY6,
nEndPos = nStartPos[i+1]; wlX
K2D
} `\-mqe
nEndPos[nEndPos.length-1] = nFileLength; 28,HZaXhc
} 6;\Tps;A
} hcD.-(-;)
}Tk*?tYt
+Kg3qS"
//启动子线程 "8yDqm
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; k*T&>$k}^
for(int i=0;i<nStartPos.length;i++) hniTMO
{ qQ<7+z<4KP
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]n|lHZR
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), LTio^uH
nStartPos,nEndPos,i); y{qKb:~wv
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); qB=%8$J
fileSplitterFetch.start(); 7!,
p,|K
} $5yH8JU
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), D|5Fo'O^AV
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); k$K>ml/h
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", YcuHYf5
nEndPos = " + nFileLength); Ils^t
// fileSplitterFetch[nPos.length-1].start(); )0@&pEObm
w3oe.hWP3N
{[FJkP2l
//等待子线程结束 8F`799[p
//int count = 0; R 9Yk9v
//是否结束while循环 yCye3z.
boolean breakWhile = false; \E:l
E/y
2W`<P2IA
Ds%~J
while(!bStop) Q%RI;;YyA
{ WG*S:_?
write_nPos(); Q92hI"
Utility.sleep(500); Z|Xv_Xo|4
breakWhile = true; /T/7O
<3aW3i/jTc
!p"Ijz5
for(int i=0;i<nStartPos.length;i++) {nmBIk2v
{ [U?a %$G>
if(!fileSplitterFetch.bDownOver) lF1ieg"i M
{ 0f|nI8,z
breakWhile = false; ig,v6lqhM
break; $t$YdleIH
} bG9$ &,
} E./Gt.Na
if(breakWhile) )SFyQ
break; \rf2Os
Dmv@ljwO
0_-NE4SM/
//count++; Q" an6ht|
//if(count>4) qw%wyj7
// siteStop(); 5oIgxy
}
HvVS<Ke
@8GW?R
z}m)u
System.err.println("文件下载结束!"); Ni 5Su
} L%O(
I
catch(Exception e){e.printStackTrace ();} oT27BK26?h
} p=U5qM.O
S~LTLv:>
o5 eFLJ6
//获得文件长度 s;-%Dfn
public long getFileSize() \?.Tq24
{ /WKp\r(Hp
int nFileLength = -1; ~,.}@XlgT.
try{ #>\+6W17U
URL url = new URL(siteInfoBean.getSSiteURL()); v5o@ls
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); VjVL/SO/
httpConnection.setRequestProperty("User-Agent","NetFox"); %7bZnK`C
LK[%}2me
<oWoJP`G
int responseCode=httpConnection.getResponseCode(); x?B 8b-*
if(responseCode>=400) ?rgk
{ ^aG=vXK`b
processErrorCode(responseCode); gkyv[
return -2; //-2 represent access is error &-0eWwMW
} {$mj9?n=v
i.`RQZ$,/
#<|q4a{8
String sHeader; D#,P-0+%
^d2bl,1
T&`H )o
for(int i=1;;i++) C6C7*ks
{ "ewB4F[
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); q9&d24|
//Utility.log(in.readLine()); kdrya
sHeader=httpConnection.getHeaderFieldKey(i); M%8:
if(sHeader!=null) 5#U*vGVT
{ UF00K1dbz
if(sHeader.equals("Content-Length")) ,HQaS9vBQ
{ 0vRug|}k#%
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); aBLE:v
break; qrmJJSJ
} {r!X W
} <ZM8*bqi
else yr
/p3ys
break; D 4\T`j:
} hD:$Sv/H
} G6b\4}E
catch(IOException e){e.printStackTrace ();} n3kYVAgF
catch(Exception e){e.printStackTrace ();} M6J/S
_ADK8a6%)
pPdOwK#
Utility.log(nFileLength); ~\z\f}w
LAwl9YnG:
"3i=kvdz
return nFileLength; L@{5:#-
} g2<xr;<t^
$iA`_H`W
v&EHp{8Qd
//保存下载信息(文件指针位置) *?`:=
private void write_nPos() G*|2qX"o
{ yU(k;A-
try{ YrR}55V,
output = new DataOutputStream(new FileOutputStream(tmpFile)); 3' WS6B+
output.writeInt(nStartPos.length); e_BOzN~c
for(int i=0;i<nStartPos.length;i++) X192Lar
{ F_$ K+6
// output.writeLong(nPos); v?7.)2XcX
output.writeLong(fileSplitterFetch.nStartPos); (Js'(tBhiU
output.writeLong(fileSplitterFetch.nEndPos); >_y>["u6J#
} %HJ_0qg
output.close(); N*Owfr1N
} WJ+<&6W8
catch(IOException e){e.printStackTrace ();} EK^ld!g(
catch(Exception e){e.printStackTrace ();} Q
b5AQf30
} oh5fNx
=B(zW.Gf
l#,WMu&
//读取保存的下载信息(文件指针位置) uL!{xuN
private void read_nPos() hNV"{V3`{
{ GJA3
try{ ,OLN%2Sq
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ^AUmIyf_
int nCount = input.readInt(); [Uezi1I
nStartPos = new long[nCount]; pt;kN&A^
nEndPos = new long[nCount]; {}ZQK
for(int i=0;i<nStartPos.length;i++) m.MOn3n]
{ otXB:a
nStartPos = input.readLong(); (s,*soAN
nEndPos = input.readLong(); nJYcC"f
} ipEsR/O
input.close(); *fq=["O
} Ywf.,V
catch(IOException e){e.printStackTrace ();} |/g\N,]
catch(Exception e){e.printStackTrace ();} h!f7/)|[o
} j+n1k^jC
~<pGiW'w5
1X/
q7lR
private void processErrorCode(int nErrorCode) e/WR\B'1
{ J*8fGR%
System.err.println("Error Code : " + nErrorCode); i8nCTW
} $+sNjwv^F
N"b>]Ab] ;
M[0@3"}}
//停止文件下载 EM*YN=S o
public void siteStop() Ftm%@S ?
{ GCx]VN3&
bStop = true; ()vxTTa
for(int i=0;i<nStartPos.length;i++) v!ULErs
fileSplitterFetch.splitterStop(); v.+-)RLQg
74%,v|
~_SV`io
} Z8Fbx+~"
} LD WFc_
//负责部分文件的抓取 Da)[mxJ
**FileSplitterFetch.java C CX\"-C
*/ [t
/hjm"$
package NetFox; g[j"]~
:JSOj@s
m5sgcxt/
import java.io.*; 16 o3ER
import java.net.*; z@cL<.0CE
2-u>=r0L
QhK]>d.
public class FileSplitterFetch extends Thread { `,&h!h((
gydPy*
L&