/* y$K!g&lGA
**SiteFileFetch.java d,+d8X
*/ h-Ffs
package NetFox; VmV/~- <Z
import java.io.*; !W .ooy5(
import java.net.*; m~#98ZJ^
NR^z!+oSR
T+N%KRl
public class SiteFileFetch extends Thread { V 7%rKK
97'*Xq
V= !!;KR0
SiteInfoBean siteInfoBean = null; //文件信息Bean |u7vY/
long[] nStartPos; //开始位置 `NyvJt^<
long[] nEndPos; //结束位置 _z{:Q
FileSplitterFetch[] fileSplitterFetch; //子线程对象 +hV7o!WxC
long nFileLength; //文件长度 56d,Sk)
boolean bFirst = true; //是否第一次取文件 MXSPD#gN
boolean bStop = false; //停止标志 bC)diC
File tmpFile; //文件下载的临时信息 "*XR'9~7
DataOutputStream output; //输出到文件的输出流 L%U-MOS=
qL
UbRp
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =<n+AqJ%
public SiteFileFetch(SiteInfoBean bean) throws IOException *siS4RX2
{ |*i0h`a
siteInfoBean = bean; GC~Tf rf=r
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); T>.*c6I
b
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Abd&p N
if(tmpFile.exists ()) !1w=_
{ YPFjAQ
bFirst = false; ^)D[ W(*
read_nPos(); _l{GHz
} .E"hsGH9h
else shjS^CP
{ gGH<%nHW1
nStartPos = new long[bean.getNSplitter()]; 7b \Hbg Z
nEndPos = new long[bean.getNSplitter()]; aXhgzI5]
} W6
f *>
?b:l.0m
egK,e?~
aOA;"jR1
} d^!)',`
89k9#i X
RU>T?2
public void run() WENPS*0oS]
{ ZGH2
//获得文件长度 7rbl+:y2
//分割文件 ^<.mUaP
//实例FileSplitterFetch ?8)_,
//启动FileSplitterFetch线程 0!eZ&.h?4
//等待子线程返回 oV&AJ=|\
try{ vp{jh-&
if(bFirst) jDqe)uVvtV
{ Vf`1'GY
nFileLength = getFileSize(); "U4Sn'&h@
if(nFileLength == -1)
4b,N"w{v
{ {%)bxk6
System.err.println("File Length is not known!"); fnN"a Z
} gp$oQh#37;
else if(nFileLength == -2) )lTkqz8v
{ Z455g/=ye
System.err.println("File is not access!"); $NWXn,Y'
} p.SEW5
else wm%9>mA%
{ OjCTTz
for(int i=0;i<nStartPos.length;i++) >RG
}u
{ 4ac2^`
nStartPos = (long)(i*(nFileLength/nStartPos.length)); FI`][&]V
} J/:9;{R
for(int i=0;i<nEndPos.length-1;i++) Pa'g=-
{ Rs$k3
nEndPos = nStartPos[i+1]; *&Np;^~
} U^-:qT;CX
nEndPos[nEndPos.length-1] = nFileLength; BlF>TI%2
} N2 wBH+3w
} "M3R}<Vt
uosFpa
\25Rq/&w
//启动子线程 vSb$gl5H
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; !iN=py
for(int i=0;i<nStartPos.length;i++) d OQU#5
{ U7bbJ>U_|
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m}54yo
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "7(2m
nStartPos,nEndPos,i); iSCv/Gb:,
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }te\)
Yk.N
fileSplitterFetch.start(); Uf}s6#
} U3}r.9/
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), u]lf~EE
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Ghs{B8
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", C!6?.\U/:c
nEndPos = " + nFileLength); P:eY>~m<;
// fileSplitterFetch[nPos.length-1].start(); q"7rd?r52
D(yU:^L
PHU#$LG
//等待子线程结束 O8%+5l`T!
//int count = 0; =;#+8w=^
//是否结束while循环 3xj
?}o
boolean breakWhile = false; JL5
)
C_mPw
a/A$
MXZ_
while(!bStop) v9QR,b`n
{ pTT7#b(t
write_nPos(); 9 +k7x,
Utility.sleep(500); Km7HB!=<
breakWhile = true; 1:h{(
%`&
se(ZiyHp
+Wrj%}+
for(int i=0;i<nStartPos.length;i++) ~xZFm
{ vPz$jeA
if(!fileSplitterFetch.bDownOver) K;^$n>Y
{ "#anL8
breakWhile = false; q1Gc0{+)
break; \ bNN]=
} L 1iA
^x
} R >f$*T
if(breakWhile) 9.:r;H G
break; 1Tz5tU9kR
p_pI=_:
?WyL|;b*
//count++; wQ]!Y?I
//if(count>4) yxP(|
// siteStop(); n]c6nX:'
} wQ-pIi{G
^NwXvp>7-
pB*8D
System.err.println("文件下载结束!"); 2Hl0besm
} I-<U u2
catch(Exception e){e.printStackTrace ();} TJjcX?:(
} xXkP(^ Y
VUAW/
8@y@}
//获得文件长度 ]Y@Db5S$T
public long getFileSize() Z3X/SQ'0
{ y;aZMT.YI
int nFileLength = -1; ^oaFnzJdf
try{ B7HNNX
URL url = new URL(siteInfoBean.getSSiteURL()); H*s_A/$
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Zt;3HY=y
httpConnection.setRequestProperty("User-Agent","NetFox"); B'<k*9=Nv8
[\+"<;m$
GIG\bQSv2
int responseCode=httpConnection.getResponseCode(); i8 t% v
if(responseCode>=400) mNhVLB
{ .H;[s
processErrorCode(responseCode); 9+><:(,
return -2; //-2 represent access is error r:.3P
} b'F#Y9
D&0y0lxI@
TrA&yXXL
String sHeader; [l"|x75-
otaB$Bb
a^wGc+
for(int i=1;;i++) A9qbE
{ 5A^$!q P
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 3jH-!M5
//Utility.log(in.readLine()); )*6]m1
sHeader=httpConnection.getHeaderFieldKey(i); od\-o:bS
if(sHeader!=null) a;@G
{ O.OPIQ=?:w
if(sHeader.equals("Content-Length")) ]rk8Jsg
{ N1dv}!/*.+
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); B'sgCU
break; R)}ab{A
} b/^i
} oZVq}}R
else _OR@S%$
break; l@:|OGD;8
} (|Zah1k&]
} !Miw.UmPm
catch(IOException e){e.printStackTrace ();} Y'n+,g
catch(Exception e){e.printStackTrace ();} ICq
vq(ElXTO
/XEt2,sI9
Utility.log(nFileLength); qRk<1.
+q*Cw>t /
/O@TqH
return nFileLength; _p<]jt
} z''ITX)oG
$"#2hVO
<<#j?%
//保存下载信息(文件指针位置) ~%.<rc0
private void write_nPos() 04npY+1
8%
{ J9buf}C[
try{ Q:rQ;/b0/
output = new DataOutputStream(new FileOutputStream(tmpFile)); M^C|svm
output.writeInt(nStartPos.length); 4o|-v
for(int i=0;i<nStartPos.length;i++) .lbo\v}2W
{ y+jOk6)W75
// output.writeLong(nPos); i"4&UJu1;
output.writeLong(fileSplitterFetch.nStartPos); CSu}_$wC#
output.writeLong(fileSplitterFetch.nEndPos); Obj?, O
} SLGo/I*
output.close(); mEh([ZnY
} CGYZEPRR
catch(IOException e){e.printStackTrace ();} jEaU;
catch(Exception e){e.printStackTrace ();} /^Ckk
} Jw-?7O
MTyBGrs(
xMOq/")
//读取保存的下载信息(文件指针位置) yDl{18~zv
private void read_nPos() 3n ~n-Jo
{ 3Ql77?&k
try{ aFfd!a"n
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); coG_bX?e
int nCount = input.readInt(); w6cW7}ZD,
nStartPos = new long[nCount]; 0-VC$)S
nEndPos = new long[nCount]; Y:;]qoF
for(int i=0;i<nStartPos.length;i++) ]?1n-w.}r
{ IXA3G7$)
nStartPos = input.readLong(); V$OZC;4
nEndPos = input.readLong(); cUB+fH<B2
} NA`qC.K
input.close(); 3$TU2-x;g
} 0UbY0sYo
catch(IOException e){e.printStackTrace ();} Pjvzefp
catch(Exception e){e.printStackTrace ();} !=/wpsH
} ;kE|Vx
Y<vHL<G
cM|!jnKm
private void processErrorCode(int nErrorCode) OQ=0>;>
{ 8k.<