/* {-MjsBR
**SiteFileFetch.java _"OE}$C
*/ DajN1}]
package NetFox; -/0aGqY
import java.io.*; n(|n=P:o
import java.net.*; ZR-64G=L,
UCkV;//.
\{!,a
public class SiteFileFetch extends Thread { KK5_;<
-"{g kjuv
,%BDBZ
SiteInfoBean siteInfoBean = null; //文件信息Bean ]T&d_~l
long[] nStartPos; //开始位置 R/Z7}Q W
long[] nEndPos; //结束位置 -j2y#aP
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ml;` *;
long nFileLength; //文件长度 ?=^\kXc[
boolean bFirst = true; //是否第一次取文件 q9PjQ%
boolean bStop = false; //停止标志 l!KPgRw
File tmpFile; //文件下载的临时信息 kj.9\
DataOutputStream output; //输出到文件的输出流 NZ0 ?0*
_<DOA:'v
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 6`G8 UDK>F
public SiteFileFetch(SiteInfoBean bean) throws IOException XN>bv|*q
{ BjsTHS&
siteInfoBean = bean; fLd2{jI,
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &cJ?mSI
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); LXsZk|IhM
if(tmpFile.exists ()) AaoS &q
{ NQ;$V:s)
bFirst = false; )''V}Zn.X
read_nPos(); EaHJl
} KZ%us 6
else (;^>G[
{ GQJ4d-w
nStartPos = new long[bean.getNSplitter()]; hQ!59
nEndPos = new long[bean.getNSplitter()]; j_~mP>el)
} L,
#|W
'*&dP"
{o 5^nd
I} 5e{jBB
} ](8F]J ,
1|!)*!hu
: vx<m_
public void run() T9!NuKfur
{ om9'A=ZU
//获得文件长度 e=s85!
//分割文件 &zJ\D`\,O
//实例FileSplitterFetch S-ZN}N{,6
//启动FileSplitterFetch线程 w)RedJnf
//等待子线程返回 _Y/*e<bU
try{ HZ}Igw.Z
if(bFirst) 5XzsqeG|
{ A+frKoi
nFileLength = getFileSize(); ZZHzC+O#^
if(nFileLength == -1) Iz'Et'w8!
{ sKsMF:|OT
System.err.println("File Length is not known!"); @iXBy:@
} }
XhL`%
else if(nFileLength == -2) ?*yB&(a:8
{ aI;$N|]u
System.err.println("File is not access!"); QtXiUx^ k<
} vD:J!|hs(
else YTmHht{j#
{ *RVCz|0%w
for(int i=0;i<nStartPos.length;i++) 5GgH6
{ ]4V1]
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ,bIJW]h0
} 3A[<LnKR^E
for(int i=0;i<nEndPos.length-1;i++) N{&Lo}6F
{ x4g/ok
nEndPos = nStartPos[i+1]; 9wGsHf8]
} X%&7-PO
nEndPos[nEndPos.length-1] = nFileLength; S
w%6-
} V=th-o3[
} FE^/us7r
GG<0k\RN
>;Vfs{Z(q
//启动子线程 &7>]# *
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; *| W*Mu
for(int i=0;i<nStartPos.length;i++) +F8K%.Q_
{ s3y GL
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(),
Skr0WQ
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Yt,MXm\
nStartPos,nEndPos,i); ^Go,HiB
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); W2fcY;HZ
fileSplitterFetch.start(); XqUQ{^;aI
} XksI .]tfj
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), v_pe=LC{-e
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); n}e%c B
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Im!b-1
nEndPos = " + nFileLength); @>.aQE
// fileSplitterFetch[nPos.length-1].start(); 8 l)K3;q_
JhwHsx/
V_D wHq2
//等待子线程结束 DTM(SN8R+n
//int count = 0; Lk@+iHf
//是否结束while循环 a#% *H
boolean breakWhile = false; ts@Z5Yw*!
83
R_8
~<O.Gu&"R
while(!bStop) m.`I}
{ y6-P6T
write_nPos(); )\VuN-d
Utility.sleep(500); sJ^Ff
breakWhile = true; -64;P9:A>
/wJ4hHY
$BgaLJs/O
for(int i=0;i<nStartPos.length;i++) j6~`C
?(
{ #a~BigZ[G
if(!fileSplitterFetch.bDownOver) }cGILH%
{ z;2& d<h
breakWhile = false; ';8 ,RTe
break; 5S!j$_(
} :p@jslD
} V9}\0joM
if(breakWhile) eq8faC5
break; e!L5v?
#3LZX!
+l/kH9m
//count++; -!qjBK,`X
//if(count>4) NIQ}+xpC
// siteStop(); ZsXw]Wa
} ("j;VqYUL
u,`3_I^
GHn0(o &K
System.err.println("文件下载结束!"); 1!;~Y#
} ((#BU=0iK
catch(Exception e){e.printStackTrace ();} D_$N2>I-
} DbB<8$
nvLdgu4P>
<pa-C2Ky
//获得文件长度 d}Guj/cx,
public long getFileSize() -AD`(b7q
{ '%ZKvZ-
int nFileLength = -1; _Li.}g@Bd
try{ He4HIZ
URL url = new URL(siteInfoBean.getSSiteURL()); 0-{E% k
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $kHXt]fU
httpConnection.setRequestProperty("User-Agent","NetFox"); 7t#Q8u?
SSla^,MHef
r#1W$~?>
int responseCode=httpConnection.getResponseCode(); X(Mpg[,N"
if(responseCode>=400) w/*#TDR
{ }a,ycFt
processErrorCode(responseCode); cC/32SmY4
return -2; //-2 represent access is error sq(5k+y*J
} rr\u)D#)
$M0l
(htR
y4|<+9<7
String sHeader; ^'tT_
gT
>@cBDS<6R
8%YyxoCH
for(int i=1;;i++) fK]%*i_"
{ Yy]TU} PY
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); yi~]}M
//Utility.log(in.readLine()); A&B|n!;b
sHeader=httpConnection.getHeaderFieldKey(i); 3X;>cv#B
if(sHeader!=null) _%Xp2`m
{ -zJV(`
if(sHeader.equals("Content-Length")) {{_v.d~1
{ [*(1~PrlO,
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 1BW 9,Xr
break; jVOq/o
} ?f3R+4
} B=%%3V)2
else C{nk,j
L
break; J1cz
D |(
} u*5}c7)uId
} 4|5;nxkGm8
catch(IOException e){e.printStackTrace ();} \4j_K*V
catch(Exception e){e.printStackTrace ();} 1i.3P$F
??P\v0E
0m.`$nlV-
Utility.log(nFileLength); <*^|Aj|#
kb"Fw:0
q27q/q8
return nFileLength; F@Wi[K
} <o3I<ci6
FJ!`[.t1AU
M;3q.0MU
//保存下载信息(文件指针位置) {:_*P
TVk
private void write_nPos() =?+w5oI0
{ T95FoA
try{ _7';1 D
output = new DataOutputStream(new FileOutputStream(tmpFile)); lqh:c
output.writeInt(nStartPos.length); B=^M& {
for(int i=0;i<nStartPos.length;i++) n{~&^Nby*I
{ {jR3D!hK
// output.writeLong(nPos); jr.{M
output.writeLong(fileSplitterFetch.nStartPos); d_&pxy?
>
output.writeLong(fileSplitterFetch.nEndPos); o+{i26%
} '~f*O0_
output.close(); zd-
*UFi
} qBK68B)
catch(IOException e){e.printStackTrace ();} 6(htpT%J
catch(Exception e){e.printStackTrace ();} KVEc:<|x
} TC'SDDX
e];IQ|
XVfUr\=,T
//读取保存的下载信息(文件指针位置) *sB'D+-/
private void read_nPos() +lFBH(o]X
{ cp~6\F;c
try{ HA}q.L]#
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ?z-nY,'^uq
int nCount = input.readInt(); W=+AU!%
nStartPos = new long[nCount]; XUR#|
nEndPos = new long[nCount]; NM),2% <
for(int i=0;i<nStartPos.length;i++) ;*FY+jM
{ <6hs<qXqi
nStartPos = input.readLong(); aL;zN%Tw
nEndPos = input.readLong(); UA6
C/
} XH*(zTd(?
input.close(); 3d1xL+
} nZL!}3@<
catch(IOException e){e.printStackTrace ();} +Lc+"0*gV*
catch(Exception e){e.printStackTrace ();} 'Pn:10;
} fy$CtQM
GyxLzrp
z52F-<
private void processErrorCode(int nErrorCode) (;9fkqm%m
{ K%t&aRjS
System.err.println("Error Code : " + nErrorCode); +"WNG
} A(BjU:D(Oj
?aBAmyxm
[5-IkT0
//停止文件下载 g26_#4 P
public void siteStop() vmfFR
{ [4B(rra
bStop = true; vfhoN]v
for(int i=0;i<nStartPos.length;i++) $/JXI?K
fileSplitterFetch.splitterStop(); P@5-3]m=
r]QeP{
F/j ; q
} 0v1~#KCm
} +9t{ovF?L
//负责部分文件的抓取 ;"9Ks.
**FileSplitterFetch.java aYpc\jJ
*/ XS^du{ai
package NetFox; V8o,
e
{IBbN05 ;
5RO6YxQ
import java.io.*; ).u>%4=6
import java.net.*; D?*du#6
sH1ucZ>9Y
VTDnh*\5
public class FileSplitterFetch extends Thread { 3?h!nVI+2J
g3%x"SlIU
TI"Ki$jC
String sURL; //File URL {LqYb:/C5U
long nStartPos; //File Snippet Start Position tId,Q>zH
long nEndPos; //File Snippet End Position lq`7$7-4
int nThreadID; //Thread's ID @V Tw>=94
boolean bDownOver = false; //Downing is over Vz!{nL0Q(
boolean bStop = false; //Stop identical "~6&rt
FileAccessI fileAccessI = null; //File Access interface I7|a,Q^f
ev/)#i#s{
Dq!YB[Z$:
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException UN;U+5,t
{ TOSk+2P
this.sURL = sURL; o2]Np~`g,
this.nStartPos = nStart; 94*MRn1E
this.nEndPos = nEnd; ) 54cG
nThreadID = id; 69uDc
fileAccessI = new FileAccessI(sName,nStartPos);//定位 /Q#eP m
} l 8GAZ*+
7+[L6q/K
YLSDJ$K6
public void run() /9P7;1?
{ _wW"Tn]
while(nStartPos < nEndPos && !bStop) YxU->Wi]G
{ \sW>Y#9]
!@ AnwV]
F<2gM#jLB
try{ O0pXHXSAL
URL url = new URL(sURL); *8%uXkM m
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); iQCs8hIR
httpConnection.setRequestProperty("User-Agent","NetFox"); 7s:cg
String sProperty = "bytes="+nStartPos+"-"; 2AxKB+c1`
httpConnection.setRequestProperty("RANGE",sProperty); a~-k} G5
Utility.log(sProperty); %^"i\-*|S
4m~p(r
kqC7^x
InputStream input = httpConnection.getInputStream(); S|yDGT1
//logResponseHead(httpConnection); dOgc%(kz
mwz!7Q
0.(7R,-
byte[] b = new byte[1024]; _R
;$tG,
int nRead; '=K~M
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) "Nq5FcS9
{ vsI|HxpyC,
nStartPos += fileAccessI.write(b,0,nRead); 4Xn-L&0z
//if(nThreadID == 1) oVfRp.a
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); EWVn*xl?
} iy_3#x5>
<<YH4}wZ
4Xv."L
Utility.log("Thread " + nThreadID + " is over!"); |oR{c%z05
bDownOver = true; brF) %x`
//nPos = fileAccessI.write (b,0,nRead); nnd-d+$
} y,<\d/YY@
catch(Exception e){e.printStackTrace ();} "*d%el\63
} AX )dZdd
} BBl9<ne$
Fj<a;oV
9Z3Y, `R,
//打印回应的头信息 =}SC .E\
public void logResponseHead(HttpURLConnection con) "!Hm.^1
{ Q 9JT6
for(int i=1;;i++)
/zir$
{ ( M3-S5
String header=con.getHeaderFieldKey(i); 5* ~EdT
if(header!=null) +6<g N[
//responseHeaders.put(header,httpConnection.getHeaderField(header)); reoCyP\!!
Utility.log(header+" : "+con.getHeaderField(header)); 7V~
gqum
else
?U~`'^@
break; UX?S#:h
} 09Z\F^*$F
} vFgnbWxG
bGp3V. H
7zXX&