/* vQ$ FMKz7
**SiteFileFetch.java C&D!TR!K
*/ L6O*aZ|
package NetFox; 5fjmr
import java.io.*; /V^Gn;
import java.net.*; >XM-xK-=
}PUQvIGZZ&
m6bAvy]3<t
public class SiteFileFetch extends Thread { twq!@C
\IQf|
%[l5){:05
SiteInfoBean siteInfoBean = null; //文件信息Bean b[%sKl
long[] nStartPos; //开始位置 =LC:1zn4
long[] nEndPos; //结束位置 q",n:=PL
FileSplitterFetch[] fileSplitterFetch; //子线程对象 lo5,E(7~h
long nFileLength; //文件长度 ?Bno?\
boolean bFirst = true; //是否第一次取文件 D<$,v(-
boolean bStop = false; //停止标志 g/)mbL>=
File tmpFile; //文件下载的临时信息 fq48>"g*
DataOutputStream output; //输出到文件的输出流 <}&n}|!
IXDj;~GF
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) AQw1,tGV
public SiteFileFetch(SiteInfoBean bean) throws IOException (Z fY/
{ YAYPof~A$l
siteInfoBean = bean; z1{kZk
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); c_"]AhV~Mg
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 9LI#&\lba
if(tmpFile.exists ()) |7LhE+E
{ s3Pr$h
bFirst = false; ?Id3#+-O
read_nPos(); HZX(kYV
} Kc$j<MRtv
else SxI='z_S.f
{ -W38#_y/\
nStartPos = new long[bean.getNSplitter()]; omevF>b;
nEndPos = new long[bean.getNSplitter()]; -~n^?0
} *<c, x8\s9
&`Oj<UyJY
0JN>w^
["TUSf]
} W<_9*{|E;
W$>srdG0$
aAhXHsZ|26
public void run() t6(LO9 Qc
{ .jA'BF.
//获得文件长度 WhQK3hnm
//分割文件 >\6Tm
//实例FileSplitterFetch P/6$T2k_
//启动FileSplitterFetch线程 j")#"& m
//等待子线程返回 I]+xerVd
try{ ^yL6A1
if(bFirst) '#LbIv4
{ c5C 2xE}T
nFileLength = getFileSize(); 094~ s
if(nFileLength == -1) @TBcVHy
{ a~ sU
System.err.println("File Length is not known!"); iI\bD
} pBl'SQccp
else if(nFileLength == -2) ]/g&y5RG
{ wFI2(cQ
System.err.println("File is not access!"); JcV'O)&
} 5tfD*j n
else oM\b>*
{ -!V+>.Oh
for(int i=0;i<nStartPos.length;i++) Hz~?"ts@;
{ V{4=,Ax
nStartPos = (long)(i*(nFileLength/nStartPos.length)); I8~ .Vu2
} cetHpU,
for(int i=0;i<nEndPos.length-1;i++) UVa:~c$U4
{ H2[VZ&Pg
nEndPos = nStartPos[i+1]; utOATjB.z
} *9Ta0e*
nEndPos[nEndPos.length-1] = nFileLength; `s1>7XWf
} @pq2Z^SQ H
} $1lI6 =
,
mWEaUi)Zz
l ld,&N8
//启动子线程 +5~5BZP
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; J,q6
for(int i=0;i<nStartPos.length;i++) Uao8#<CkvJ
{ 0i/!by{@
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ),cozN=NM
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Xf
0)i
nStartPos,nEndPos,i); u*}[fQ`aF
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); tV.qdy/]}
fileSplitterFetch.start(); ]rC2jB\,M
} 7 6 nrDE
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), \EI<1B
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); J34/rL/s
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 3QSA|
nEndPos = " + nFileLength); }OZut!_
// fileSplitterFetch[nPos.length-1].start(); l/*NscYtQ
l$_q#Kd
OeMI
//等待子线程结束 vX?MB
//int count = 0; Lsu_f'p0
//是否结束while循环 #dO8) t
boolean breakWhile = false; qe^d6
k|uW~I)
80m<OW1
while(!bStop) fhwJ
{ D@W[Nd5MJ
write_nPos(); k65V5lb
Utility.sleep(500); _"0,
breakWhile = true; 7 +]+S`p
~t=73fwB
iEx
sGn]2
for(int i=0;i<nStartPos.length;i++)
]F'o
{ vC#_PI
if(!fileSplitterFetch.bDownOver) |NMf'$
{ 3g79pw2w=
breakWhile = false; b6(LoN.
break;
-ElK=q
} {4]sJT
} vD-m FC)
if(breakWhile) K x4_`;>
break; YzA6*2
yV.E+~y
#!.26RM:P
//count++; wqnrN6$jf
//if(count>4)
eeMeV>
// siteStop(); sh#hDU/</
} \:mZ)f3K=
TKH!,Ow9A
%>io$ o
System.err.println("文件下载结束!"); npCiqO
} ,vcg%~-
catch(Exception e){e.printStackTrace ();} Q$bi:EyJXc
} 1`& Yg(
JX)%iJq#
wjzR 8g0bQ
//获得文件长度 Qr.SPNUFK
public long getFileSize() n=F|bW
{ OK] _.v}
int nFileLength = -1; 9B)<7JJX!J
try{ 0 k(su
URL url = new URL(siteInfoBean.getSSiteURL()); e'l@M$^
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); q 3nF\Me0
httpConnection.setRequestProperty("User-Agent","NetFox"); l/i7<