/* &5?G-mn
**SiteFileFetch.java XAe\s`
*/ MDJc[am
package NetFox; (8.{+8o
import java.io.*; j~bAbOX12
import java.net.*; ((XE\V\}Z
m`z7fi7u
/
s,tY74'5
public class SiteFileFetch extends Thread { -."kq.m*
#ZJMlJ:q`"
(
#*"c
SiteInfoBean siteInfoBean = null; //文件信息Bean ~.J,A\F
long[] nStartPos; //开始位置 tJNIr5o
long[] nEndPos; //结束位置 av-#)E
FileSplitterFetch[] fileSplitterFetch; //子线程对象 bNGCOj
long nFileLength; //文件长度 [)^mBVht
boolean bFirst = true; //是否第一次取文件 GF8 -_X
boolean bStop = false; //停止标志 sYJL-2JX
File tmpFile; //文件下载的临时信息 hq=,Z1J
DataOutputStream output; //输出到文件的输出流 # ly@;!M
zJ+3g!
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) mzWP8Hlw
public SiteFileFetch(SiteInfoBean bean) throws IOException \<~}o I
{ N2BI_,hI1
siteInfoBean = bean; Z|G/^DK!
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Us,)]W.S
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); t2-
^-g6
if(tmpFile.exists ()) FZF @
{ Oe51PEqn
bFirst = false; RT^v:paNT2
read_nPos(); 9Hd;353Q
} !;S"&mcPDJ
else `1Zhq+s
{ OR:[J5M)
nStartPos = new long[bean.getNSplitter()]; y`yZR
_
nEndPos = new long[bean.getNSplitter()]; _T5)n=|
} rEdY>\'
/.Fj.6U5
_%~$'Hy
pj0fM{E
} S,''>`w
5{d\uE%'p
Tkw;pb
public void run() LH2PTW\b!6
{ 5{K}?*3hJ
//获得文件长度 *FK`&(B+}
//分割文件 :]PM_V|
//实例FileSplitterFetch KVkMU?6
//启动FileSplitterFetch线程 Kc #|Z
//等待子线程返回 + H_MV=A^
try{ TW7:q83{l
if(bFirst) nPN?kO=]
{ 9XLFHV("
nFileLength = getFileSize(); <@G8ni
if(nFileLength == -1) #]E(N~
{ \L # INP4~
System.err.println("File Length is not known!"); t9^A(Vh"-
} 8 TiG3
else if(nFileLength == -2) "B{ECM;
{ \,&9
System.err.println("File is not access!"); x[Im%k
} LOvHkk@+
else }7s>B24J
{ ;
A,#;%j
for(int i=0;i<nStartPos.length;i++) CSTI?A"P
{ g5Z#xszj+
nStartPos = (long)(i*(nFileLength/nStartPos.length)); !TKkec8$
} p`F9Amb
for(int i=0;i<nEndPos.length-1;i++) *|% ^0#$c
{ B=Ym x2A9]
nEndPos = nStartPos[i+1]; . ]@=es
} 2HD]?:Fk7
nEndPos[nEndPos.length-1] = nFileLength; WG7k(Sp]
} pZ(Fx&fy
} +nL+N
D)@XoM(
k5`OH8G
//启动子线程 $HJTj29/
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; {Qv>q$Q
for(int i=0;i<nStartPos.length;i++) e:w&(is
{ F_;DN:
{
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), C&~1M}I
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =1p8i
nStartPos,nEndPos,i); Rp9fO?ZjHt
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !#2=\LUC
fileSplitterFetch.start(); ?GA&f2]a
} L<V3KS2y
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +7V{ABfGl
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); zYY$D.
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ziE*'p
nEndPos = " + nFileLength); L';MP^
// fileSplitterFetch[nPos.length-1].start(); CZ<~3bEF
&HW1mNF9
uI~S=;o
//等待子线程结束 3+Qxg+<
//int count = 0; U]|agz>
//是否结束while循环 E.`U`L
boolean breakWhile = false; n5-)/R[z
9BEFr/.
*?ITns W<
while(!bStop) Ih}1%Jq
{ p d[ncL
write_nPos(); +pm[f["C.
Utility.sleep(500); I6!5Yj]O"
breakWhile = true; mmXm\]r>4
V/d/L3p
Ys+OB*8AE
for(int i=0;i<nStartPos.length;i++) H5CR'Rp
{ $?G"GQ!.
if(!fileSplitterFetch.bDownOver) g>rp@M
{ m([(:.X/IX
breakWhile = false; oX@ya3!Pz
break; )tHaB,
} ]uj=:@
} vbx6I>\Y
if(breakWhile) J_;N:7'p
break; 9^"b*&>P
KlV:L 4a~
C?ib_K*
//count++; 1"7Sy3
//if(count>4) xkNyvqcw
// siteStop(); Rlnbdb;!k
} :A
%^^F%
5!YA o\S
%J:SO_6
System.err.println("文件下载结束!"); bzDIhnw
} 8P7"&VYc8
catch(Exception e){e.printStackTrace ();} ml0.$z
} uwf
5!Z:>
Hs?e0Z=N
h&.wo !
//获得文件长度 {>LIMG-f
public long getFileSize() D4eTTfQ
{ .:p2Tbo
int nFileLength = -1; /+*#pDx/zW
try{ Z=B_Ty
URL url = new URL(siteInfoBean.getSSiteURL()); FGO[
|]7IN
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); b`yZ|j'ikd
httpConnection.setRequestProperty("User-Agent","NetFox"); SK1!thQy
b*a2,MiM
LE5.b]tv2
int responseCode=httpConnection.getResponseCode(); ~R$~&x