/* *K=me/
3
**SiteFileFetch.java rIH+X2x
*/ &gm/@_
package NetFox; 1;MUemnx`
import java.io.*;
bqR0./V
import java.net.*; y=}a55:qE
mO\=#Q>
jin?;v
public class SiteFileFetch extends Thread { r3Ih]|FK#
D4GXZX8K
D2#.qoP #
SiteInfoBean siteInfoBean = null; //文件信息Bean :4238J8
long[] nStartPos; //开始位置 ."v&?o
Ck]
long[] nEndPos; //结束位置 ou&7v<)x4
FileSplitterFetch[] fileSplitterFetch; //子线程对象 kca Y
long nFileLength; //文件长度 gi\UNT9x
boolean bFirst = true; //是否第一次取文件 K9'AYFse
boolean bStop = false; //停止标志 $4TawFf"nc
File tmpFile; //文件下载的临时信息 2 BwpxV8
DataOutputStream output; //输出到文件的输出流 X@B,w_b
@ j4~`~8
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) eJ$ {`&J
public SiteFileFetch(SiteInfoBean bean) throws IOException /lvH p
{ UC9w T
siteInfoBean = bean; W}oAgUd
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); VoUAFEcs
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); X_I.f6v{
if(tmpFile.exists ()) #+P)X_i`
{ *:,7
A9LY
bFirst = false; s|8_R;
read_nPos(); x "PMi[4
} &nF7CCF
else C
F<
{ 7Rom#Kl:
nStartPos = new long[bean.getNSplitter()]; _$4vk
nEndPos = new long[bean.getNSplitter()]; /E6Tt
} DfP
vi1
+f?xVW<h
3gmu-tv
ps?B;P
} #EU x1II
,b8B)VZ?
Ucok&)7-
public void run() 1hgmlY`
{ W?auY_+P
//获得文件长度 -zLxT
//分割文件 (z<&PP
//实例FileSplitterFetch \LW
'6
pQ_
//启动FileSplitterFetch线程 )c<5:c
//等待子线程返回 <?iwi[S
try{ *YY:JLe
if(bFirst) $f<R j/`&
{ s"]LQM1|
nFileLength = getFileSize(); ;-65~i0Iu
if(nFileLength == -1) 7":0CU%%
{ 7J2i /m
System.err.println("File Length is not known!"); g8w5X!Z
} b$ )XS
else if(nFileLength == -2) ?en%m|}0
{ <:BhV82l
System.err.println("File is not access!"); +#y[sKa
} Lpdp'9>I
else m)?cXM
{ }mw31=2bD
for(int i=0;i<nStartPos.length;i++) 3AD^B\<gB
{ tpi63<N
nStartPos = (long)(i*(nFileLength/nStartPos.length)); i'9
} jW+L0RkX
for(int i=0;i<nEndPos.length-1;i++) mYzq[p_|j
{ j^~WAWbFh
nEndPos = nStartPos[i+1]; %@jv\J
} SQbnn"
nEndPos[nEndPos.length-1] = nFileLength; yN~: 3
} Lw.N3!e[
} vg1p{^N!
E8Wgm
8
KArnNmJ9
//启动子线程 eESJk14
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; }3!.e
for(int i=0;i<nStartPos.length;i++) PV%7m7=x
{ z|SLH<~
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), n2H2G_-L[
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), %8+'L4
nStartPos,nEndPos,i); e&u HU8k*
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %+9Mr ami
fileSplitterFetch.start(); 2FS,B\d
} G}\E{VvWh
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), l$Y7CIH
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %-:6#bz
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", l>M&S^/s j
nEndPos = " + nFileLength); @Tr8.4
// fileSplitterFetch[nPos.length-1].start(); ZUMzWK5Th
T{j&w% (z
@4b"0ne}h
//等待子线程结束 #sEbu^
//int count = 0; #.%;U' #O
//是否结束while循环 P Z;O
pp
boolean breakWhile = false; MqI!i>
7Q.?]k&
T;}pMRd%
while(!bStop) *Ta*0Fr=9|
{ 0BIH.ZV#
write_nPos(); kf$0}T`
Utility.sleep(500); @$;"nVZ4v
breakWhile = true; M(S:&GOU
8\t~*@"
mY3x
(#I
for(int i=0;i<nStartPos.length;i++) fN>o465I6
{ j4Cad
if(!fileSplitterFetch.bDownOver) H6*d#!
{ $3%EKi
breakWhile = false; I/MYS5}
break; K$\]\qG6
} VHB5
} A=|&N%lP'
if(breakWhile) [3rvRJ.
break; V5RfxWtm:
0*8[m+j1
y:Qo:Z~
//count++; !K1[o'o#
//if(count>4) #G^?4Za
// siteStop(); 1<
;<?
} :NO'[iE
dGcG7*EX
}}l04kN_
System.err.println("文件下载结束!"); -pc*$oe
} O6;7'
catch(Exception e){e.printStackTrace ();} 7WW@%4(
} #IyxH$
K9gfS V>]
4RNB\D
//获得文件长度 Hc4]2pf
public long getFileSize() HkEfBQmh
{ Qg9 N?e{z
int nFileLength = -1; Q5/".x^@
try{ 5B@+$D[0?3
URL url = new URL(siteInfoBean.getSSiteURL()); 4 ?,N;Q
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); +=^10D
httpConnection.setRequestProperty("User-Agent","NetFox"); a4L8MgF&$-
3ePG=^K^
L*1C2EL/q
int responseCode=httpConnection.getResponseCode(); S!k cC-7
if(responseCode>=400) d?*=<w!A
{ \:\rkc9LI
processErrorCode(responseCode); sUcx;<|BC
return -2; //-2 represent access is error -D0kp~AO4N
} z'MOuz~Y
u:3~Ius
ZPY#<^WOzr
String sHeader; _CBG?
p0UR5A>p
Edc< 8-
for(int i=1;;i++) J O`S
{ : }v&TQ
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ">*PH}b
//Utility.log(in.readLine()); ub6=^`>h
sHeader=httpConnection.getHeaderFieldKey(i); &hEtVkK
if(sHeader!=null) 7g cr$&+e
{ JVFn=Mw
if(sHeader.equals("Content-Length")) _1f!9ghT\
{ \SS1-UbL
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <|~X,g;f
break; <l(LQmM;
} lh&Q{t(+8
} G@ XKE17
else (u+3{Eb
break; ^i2W=A'P
} |[;9$Vn
} +HQX]t:Y
catch(IOException e){e.printStackTrace ();} Ua)ARi %
catch(Exception e){e.printStackTrace ();} B)O{+avu
(hS
j4Cp
ds,NNN<HW
Utility.log(nFileLength); 9sifc<za
0{j]p^'<
u1xCn\
return nFileLength; hMh8)S
} <T+)~&g$
YN#i^(
/mX/
"~
//保存下载信息(文件指针位置) _$ ]3&P
private void write_nPos() >fJY
{ Lqb9gUJ:U
try{ Fx*iAH\e
output = new DataOutputStream(new FileOutputStream(tmpFile)); d:.S]OI0
output.writeInt(nStartPos.length); -uXf?sTV
for(int i=0;i<nStartPos.length;i++) (;;%B =
{ W~z
2Q
so
// output.writeLong(nPos); +hI:5(_
output.writeLong(fileSplitterFetch.nStartPos); @r^a/]5D
output.writeLong(fileSplitterFetch.nEndPos); 9aFu51
} $DeHo"mg7m
output.close(); 8e:J{EG~
} $014/IB
catch(IOException e){e.printStackTrace ();} lM~ 3yBy
catch(Exception e){e.printStackTrace ();} OaY.T
} \C $LjSS-
oOlqlv
>
L_kSC?
//读取保存的下载信息(文件指针位置) sa$CCQ
private void read_nPos() lk]q\yO_%
{ eW,{E)x:
try{ (pN:ET B
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); O%L]*vIr
int nCount = input.readInt(); j\iE3:94$
nStartPos = new long[nCount]; bfcQ(m5
nEndPos = new long[nCount]; jT>G8}h
for(int i=0;i<nStartPos.length;i++) byoP1F%
{ n]^zIe^6
nStartPos = input.readLong(); ul$k xc=N
nEndPos = input.readLong();
_GS_R%b
} +e}v)N
input.close(); 7ESSx"^B
} F_.rLgGY
catch(IOException e){e.printStackTrace ();} >zFk}/
catch(Exception e){e.printStackTrace ();} GdHFgxI
} r#r L~Rsd}
A[:0?Ez=
Ut.%=o;&[
private void processErrorCode(int nErrorCode) m/@ ;N,K
{ 9.u}<m
System.err.println("Error Code : " + nErrorCode); 4zyN>f|
} _ p%=RIR
uF,F<%d
X5@+M!`
//停止文件下载
|Hx#Uk#
public void siteStop() V>D8l @
{ 4eH:eCZze
bStop = true; T% 74JRQ
for(int i=0;i<nStartPos.length;i++) {\zTE1X9
fileSplitterFetch.splitterStop(); LtIp,2GP&_
*-uA\
uH*moVw@5
} gySCK-(y
} :%G_<VAo!
//负责部分文件的抓取 o;#:%
**FileSplitterFetch.java lTb4quf8I
*/ dRj2%Q f
package NetFox; ?='2@@8;
4z<nJOEh[
FQY{[QvF~
import java.io.*; 4JQd/;
import java.net.*; )oqNQ'yZ
eXKp um~
FZL"[3
public class FileSplitterFetch extends Thread { Gak@Z!|
M3q%(!2
kU:ge
String sURL; //File URL R!&9RvNw
long nStartPos; //File Snippet Start Position 8XfhXm>~
long nEndPos; //File Snippet End Position atr0hmQ
int nThreadID; //Thread's ID u@&e{w~0
boolean bDownOver = false; //Downing is over +;r1AR1)x
boolean bStop = false; //Stop identical Qe,jK{Y<
-
FileAccessI fileAccessI = null; //File Access interface rhff8C//'
1 S<E=7
5@QJ+@j|
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException {Kh^)oYdd
{ Fnqj^5
this.sURL = sURL; TAL,(&[s
this.nStartPos = nStart; ;|qbz]t2(
this.nEndPos = nEnd; "w7{,HP
nThreadID = id; 5Z;iK(>IX
fileAccessI = new FileAccessI(sName,nStartPos);//定位 3Z0ez?p+5
}
4,g_$)
\
-n&z;`
U:r^4,Mz*
public void run() r+TvC{
{ aH/8&.JLi
while(nStartPos < nEndPos && !bStop) \/XU v(
{ %f)%FN.S
?)NgODU
[0bp1S~
try{ ^8.s"4{
URL url = new URL(sURL); h`i*~${yg
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @LSfP
httpConnection.setRequestProperty("User-Agent","NetFox"); B:)PUBb
String sProperty = "bytes="+nStartPos+"-"; P5Bva
httpConnection.setRequestProperty("RANGE",sProperty); g)dKXsy(F
Utility.log(sProperty); rX(Ol,&oP
`.i #3P
@\U;?N~k
InputStream input = httpConnection.getInputStream(); vzX%x ul
//logResponseHead(httpConnection); 5J-slNNCQ
J,G/L!Bp
>//yvkZ9,
byte[] b = new byte[1024]; M{z&h>
int nRead; u+lNcyp"MW
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) @[LM8 @:
{ G^ShN45
nStartPos += fileAccessI.write(b,0,nRead); :3N6Ej
//if(nThreadID == 1) VwN=AFk
Oj
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Tuz~T
_M
} f_|pl^
ajCe&+
Z-j?N{3&
Utility.log("Thread " + nThreadID + " is over!"); 8B?*?,n5
bDownOver = true; %45*DT
//nPos = fileAccessI.write (b,0,nRead); %E8HLTEvl
} <=~*`eWV
catch(Exception e){e.printStackTrace ();} GX+Gqj.
} %)ri:Q q
} XqLR2d
,UYe OM2Ao
63`5A3rii
//打印回应的头信息 G>edJPfQ
public void logResponseHead(HttpURLConnection con) QsX`IYk
{ M1z ?E@kz
for(int i=1;;i++) <<DPer2
{ r}:Dg
fn
String header=con.getHeaderFieldKey(i); %0p9\I
if(header!=null) `*o ko[\3
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Ip<