/* [\(}dnj:
**SiteFileFetch.java wg<UCmfu!
*/ dc[w`
package NetFox; (\^| @
import java.io.*; H4[];&]xr
import java.net.*; g.![>?2$8
<BoDLvW>
Y)*5M
public class SiteFileFetch extends Thread { P%`|Tu!B
w E^6DNh
C{mL]ds<
SiteInfoBean siteInfoBean = null; //文件信息Bean Vsh7>|@
long[] nStartPos; //开始位置 s ~'><ioh
long[] nEndPos; //结束位置 H'N$Vv2q
FileSplitterFetch[] fileSplitterFetch; //子线程对象 bqjj6bf'o
long nFileLength; //文件长度 sHC4iMIw
boolean bFirst = true; //是否第一次取文件 P70\ |M0~y
boolean bStop = false; //停止标志 "/ G^+u
File tmpFile; //文件下载的临时信息 f>$Ld1
DataOutputStream output; //输出到文件的输出流 F/c7^
l
AF/O5b
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !Z+4FwF
public SiteFileFetch(SiteInfoBean bean) throws IOException u2=gG.
{ >iefEv\
siteInfoBean = bean; x8H%88!j*
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 3QlV,)}
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 7O6VnKl
if(tmpFile.exists ()) sU>!sxW
{ cR.[4rG'
bFirst = false; "YLH]9"=
read_nPos(); *LnY}#
} e_3KNQ`kA
else L@> +iZSO
{ H]v"_!(\
nStartPos = new long[bean.getNSplitter()]; ="fq.Tt
nEndPos = new long[bean.getNSplitter()]; !FwR7`i
} x!$Dje}
|~Q`DdkX
# 3{g6[Y
>XzP'h
} +^!;J/24
HD"Pz}k4
mQ#E{{:H+
public void run() >y<yFO{
{ P$4h_dw
//获得文件长度 vwZ d@%BO
//分割文件 S,&tKDJn
//实例FileSplitterFetch ofeSGx
//启动FileSplitterFetch线程 iO^z7Y7
//等待子线程返回 !_{2\&
try{ 4}nsW}jCc
if(bFirst) utk'joo
{ Vg1!
u+`<
nFileLength = getFileSize(); _ PC}`Y'&
if(nFileLength == -1) =Rnx!E
{ /+pPcK
System.err.println("File Length is not known!"); C4V#qhj
}
Jz(!eTVs
else if(nFileLength == -2) U'IJwGRP
{ W`zY\]
System.err.println("File is not access!"); 7/c[ f
} (GnwK1f
else ). +!/x
{ -!]Ie4"
for(int i=0;i<nStartPos.length;i++) QW~-+BD
{ *ml&}9
nStartPos = (long)(i*(nFileLength/nStartPos.length)); J7.}2
} FS.z lk\D=
for(int i=0;i<nEndPos.length-1;i++) _;*|"e@^
{ >AcpJ|V
nEndPos = nStartPos[i+1]; F12tOSfu*
} QInow2/u
nEndPos[nEndPos.length-1] = nFileLength; ]s
lYr8m
} ~'/I[y4t
} h'8w<n+%)
7Gb(&'n
0(9]m)e
//启动子线程 N7lWeF
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; yKR0]6ahA
for(int i=0;i<nStartPos.length;i++) Pw4j?pv2
{ p_hljgOV
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *|c*/7]<
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), mPR(4Ol.
nStartPos,nEndPos,i); t
>89(
k
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 1c=Roiq
fileSplitterFetch.start(); 7h?yAgDv~
} p{:r4!*L
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), U].u) g$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); j[/'`1tOe
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", \-c8/=
nEndPos = " + nFileLength); $mA+4ISK
// fileSplitterFetch[nPos.length-1].start();
<,~
=o
h-VpX6
q9n0bw^N
//等待子线程结束 )r
O`K
//int count = 0; 5BKmp-m
//是否结束while循环 nU"V@_?\
boolean breakWhile = false; *qcL(] Yq
dvUBuY^[
K`PmWxNPh
while(!bStop) 1\d$2N"
{ \FOX#|i)
write_nPos(); W'{q
Utility.sleep(500); lu@#)
breakWhile = true; *"E?n>b
UV>^[/^O
#&\hgsw/T
for(int i=0;i<nStartPos.length;i++) tK&.0)*=
{ )2X ng_,
if(!fileSplitterFetch.bDownOver) X-di^%<
{ ZyqTtA!A
breakWhile = false; JL1%XQ
i
break; }z&P^p)R
} Y[8w0ve-g
} J.x>*3<l
if(breakWhile) D5X;hd
break; 5* 1wQlL
1r}fnT<
LX.1]T*m`
//count++; ak50]KYo
//if(count>4) u!2.[CV
// siteStop(); lv}U-vK
} "r0z(j
qQR>z
;%
*e}w0
System.err.println("文件下载结束!"); 8|[\Tp:;
} ma LJ M\C
catch(Exception e){e.printStackTrace ();} :V2j'R,
} {jzN
P f oAg*
D%LM"p
//获得文件长度 *?oQ6g(Nz
public long getFileSize() v8Nc quv
{ aDa}@-F&a
int nFileLength = -1; &sL5Pt_
try{ Yfy6o6*:
URL url = new URL(siteInfoBean.getSSiteURL()); 8xmw-s)
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #&">x7?5
httpConnection.setRequestProperty("User-Agent","NetFox"); yz-IZt(
sZ-]yr\E"
uVqJl{e\
int responseCode=httpConnection.getResponseCode(); ovCk:Vz
if(responseCode>=400) bIizh8d?
{ >
3JU
processErrorCode(responseCode); @u/<^j3Q
return -2; //-2 represent access is error 1G|Q~%cv
} <9bQAyL9
c>K/f7
PK C``+Ki
String sHeader; K_nN|'R-
!U]V?Jpi"
CTtF=\
for(int i=1;;i++) 49
3ik
{ u0$7k9mE
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5fb,-`m.
//Utility.log(in.readLine()); ]^gD@].
sHeader=httpConnection.getHeaderFieldKey(i); }M/w 0U0o
if(sHeader!=null) y{ 90A
{ o<-%)#e
if(sHeader.equals("Content-Length")) 'xb|5_D
{ 1L'[DKb'
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?w#
>Cs(
break; sVkR7
^KsG
} XrC{{K
} "<6pp4*I
else [RD ^@~x
break; 2Z@<llsi
} aEdFZ
} <-Q0WP_^
catch(IOException e){e.printStackTrace ();} U^Z[6u
catch(Exception e){e.printStackTrace ();} 0s0[U
5HG 7M&_
4PiN Q'*
Utility.log(nFileLength); XoSjYG(>,
Bx&`$lW
0P/A
return nFileLength; $?Aez/
} w0SzK-&
7OtQK`P"A
`P/* x[?
//保存下载信息(文件指针位置) U`6QD}c"s
private void write_nPos() G !1- 20
{ f'FY<ed<w
try{ +nuv?QB/
output = new DataOutputStream(new FileOutputStream(tmpFile)); 6WfyP@f
output.writeInt(nStartPos.length); dGIu0\J\$
for(int i=0;i<nStartPos.length;i++) vkq?z~GA
{ /N%f78
Z
// output.writeLong(nPos); (53dl(L?
output.writeLong(fileSplitterFetch.nStartPos); *"fg@B5
output.writeLong(fileSplitterFetch.nEndPos); @+1E|4L1vf
} RU"w|Qu>pM
output.close(); d@At-Z~M
} NH'RU`U)
catch(IOException e){e.printStackTrace ();} +7 F7Kh
catch(Exception e){e.printStackTrace ();} H.idL6*G
} 'VJMi5Y(-
gn%#2:=pVu
Y1k/ngH
//读取保存的下载信息(文件指针位置) {]<D"x;
private void read_nPos() sQJM 4'8f
{ qsvUJU
try{ 3jS=
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); +ZRsa`'^
int nCount = input.readInt(); MP}H
5
nStartPos = new long[nCount]; 18[f_0@ #
nEndPos = new long[nCount]; f=K1ZD
for(int i=0;i<nStartPos.length;i++) :VN<,1s9p^
{ Od&M^;BQ
nStartPos = input.readLong(); WKah$l
nEndPos = input.readLong(); ~;eWQwD
} jLQjv
input.close(); {Y/|7Cl0
} eU%5CVH.v
catch(IOException e){e.printStackTrace ();} u/.srK!K
catch(Exception e){e.printStackTrace ();} h*MR5qa
} "[[fQpe4@
tMAa$XrZj
^<E+7
private void processErrorCode(int nErrorCode) klf<=V
{ Dx <IS^>i
System.err.println("Error Code : " + nErrorCode); !FSraW2
} &]LwK5SR
=R>Sxaq
yQi|^X~?$
//停止文件下载 l*v([@A\
public void siteStop() =rBFMTllM
{ IN%>46e`
bStop = true; }2NH>qvY
for(int i=0;i<nStartPos.length;i++) t*qA.xc6
fileSplitterFetch.splitterStop(); vhL&az
^F" *;8$
*<Ddn&_
} oVq@M
} DGd&x^C
//负责部分文件的抓取 L//sJe
**FileSplitterFetch.java 5ef&Ih.3
*/ mlVv3mVyR<
package NetFox; 8fe"#^"s R
g u|;C
e< CPaun
import java.io.*; "^XN"SUw
import java.net.*; Q}=RG//0*
b8]oI"&G