/* v?%vB#A^
**SiteFileFetch.java -YrMVoZl
*/ =4V SbOlZ
package NetFox; *D9H3M[o#
import java.io.*; Imq-5To#
import java.net.*; T{yJL<
VC%.u.< F
$3%+N|L
public class SiteFileFetch extends Thread { o-;/x)
+F2X2e)g"
|y+_BZ5
SiteInfoBean siteInfoBean = null; //文件信息Bean 6}|h
long[] nStartPos; //开始位置 ~-R2mAUK
long[] nEndPos; //结束位置 "{Y6.)x
FileSplitterFetch[] fileSplitterFetch; //子线程对象 8N3y(y0
long nFileLength; //文件长度 rI6+St
boolean bFirst = true; //是否第一次取文件 O}}rosA
boolean bStop = false; //停止标志 qL[SwEc
File tmpFile; //文件下载的临时信息 YhC|hDC
DataOutputStream output; //输出到文件的输出流 l@-h.tS
(=EDqAZg
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) f/iMI)J
public SiteFileFetch(SiteInfoBean bean) throws IOException ibG>|hV
{ 1xh7KBr,
siteInfoBean = bean; t%<y^Wa=
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); >[~7fxjK-
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); t`>Z#=cl\
if(tmpFile.exists ()) 8.+
yZTg
{ :fq4oHA#
bFirst = false; Ps[#z@5{x
read_nPos(); 25@@-2h @
} -~X[j2
else }Gy M<!:
{ XP?)xDr8
nStartPos = new long[bean.getNSplitter()]; )OVa7[-T
nEndPos = new long[bean.getNSplitter()]; (XY`1|])`
} gFTlP
PrA(==FX/
Xkg
Gzg3{fXl
} !ab ef.%:
i$<")q
ou<,c?nNM
public void run() >mG64N
{ a;M{-G
//获得文件长度 Fop +xR,Z
//分割文件 yf4L0.
//实例FileSplitterFetch TY'61xWi
//启动FileSplitterFetch线程 @2*Q*
//等待子线程返回 =)gdxywoC
try{ ;oDr8a<A
if(bFirst) %qTIT?6'
{ EbVva{;#$;
nFileLength = getFileSize(); i"
)_Xb_1
if(nFileLength == -1) D{[{ &1\)r
{ l=((>^i
System.err.println("File Length is not known!"); XrWWV2[
}
5C^@w
else if(nFileLength == -2) I3d}DpPx%
{ $$"G1<EZ
System.err.println("File is not access!"); +%u3% }
} =9,^Tu|
else >}W[>WReI
{ HXztEEK6
for(int i=0;i<nStartPos.length;i++) =
{ J_-fs#[x
nStartPos = (long)(i*(nFileLength/nStartPos.length)); vLyazVj..
} B&0W P5OF
for(int i=0;i<nEndPos.length-1;i++) 5Z5x\CcC3
{ <V Rb
nEndPos = nStartPos[i+1]; .>P:{''
} QG2 Zh9R
nEndPos[nEndPos.length-1] = nFileLength; HEIg_6sb
} cC+2%q B
} `|nCnT'
Pd(_
tMp!MQ
//启动子线程 7')W+`o8eL
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ,]W|"NUI
for(int i=0;i<nStartPos.length;i++) G -+!h4p
{ =WBfaxL}
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), TsG x2[
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), x\f~Gtt7Y
nStartPos,nEndPos,i); u*rP8GuS
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); '[%#70*
fileSplitterFetch.start(); js@L%1r#L
} 6Io}3}3
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L/`1K_\l
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); w D r/T3
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", :zLf~W
nEndPos = " + nFileLength); T<?kH
// fileSplitterFetch[nPos.length-1].start(); FO:L+&hr?>
^\?Rh(pu
.g\Oj0Cbxh
//等待子线程结束 K,,) FM
//int count = 0; w}zmcO:x
//是否结束while循环 k0K$OX*:e
boolean breakWhile = false; p'1/J:EnV
M*kE |q/K
0doJF@H
while(!bStop) UeLO `Ug0;
{ q!@!eC[b
write_nPos(); ZH9Fs'c=
Utility.sleep(500); J{Kw@_ypP
breakWhile = true; ZDgT"53
^-[
I;P
=CZRX'
+yN
for(int i=0;i<nStartPos.length;i++) UU MB"3e
{ j-W$)c3X
if(!fileSplitterFetch.bDownOver) `Hlf.>b1
{ dnU-v7k,{
breakWhile = false; J:Qx5;b;
break; /Xb4'Qj
} }&e HU
} C49\'1\6
if(breakWhile) X.k8w\~
break; ce}A!v
}6/M5zF3
H>+])~#
//count++; /pPH D]
//if(count>4) PQ[?zNrSV
// siteStop(); F}ATY!
} )`f-qTe
hRu}P"
6AG]7d<
System.err.println("文件下载结束!"); UGy3B)
} to</
catch(Exception e){e.printStackTrace ();} 0#!}s&j/
}
Y6VJr+Ap(
x]x 3iFD
L'?aoRj
//获得文件长度 4oiE@y&{4
public long getFileSize() `cXLa=B)9
{ >RkaFcq
int nFileLength = -1; t~/:St
try{ ": M]3.
URL url = new URL(siteInfoBean.getSSiteURL()); -oyA5Yx0
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); rSJ!vQo
Cb
httpConnection.setRequestProperty("User-Agent","NetFox"); t:fz%IOe
fI<LxU_n:
O8A1200
int responseCode=httpConnection.getResponseCode(); f(D'qV T{
if(responseCode>=400) $) "\N
{ RBn/7
processErrorCode(responseCode); e,_Sj(R8
return -2; //-2 represent access is error 0lg'QG>
} 4J_HcatOB
`y.4FA4"8
*u"%hXR
String sHeader; K6p\ >J
nsU7cLf"^V
B?=R= p
for(int i=1;;i++) F{E@snc
{ 1bCE~,tD
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); !6=;dX
//Utility.log(in.readLine()); t8EI"|
sHeader=httpConnection.getHeaderFieldKey(i); DX>LB$dy?
if(sHeader!=null)
S
W%>8
{ -@"3`uv"
if(sHeader.equals("Content-Length")) [+dCA
{ O@a OKk
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ~Dq-q6-@t
break; q| 1%G Nb
} Q!@M/@-Ky
} E2>{se Z
else K?'m#}]
break; )2?]c
} zMbFh_dcq
} sPvs}}Z]P
catch(IOException e){e.printStackTrace ();} MLHCBRi
catch(Exception e){e.printStackTrace ();} Cy$~H
bTimJp[b
C`i#7zsH
Utility.log(nFileLength); =|1_6.tz
O|8@cO
@u9L+*F
return nFileLength; ?5nEmG|kO
} ?DUim1KG
HZRFE[ 9nb
L?N&kzA
//保存下载信息(文件指针位置) aj;x:UqpJ
private void write_nPos() oLKliA=q
{ ?YL JXq
try{ B.5+!z&7
output = new DataOutputStream(new FileOutputStream(tmpFile)); e3SnC:OWf
output.writeInt(nStartPos.length); Az:~|P
for(int i=0;i<nStartPos.length;i++)
%lnkD5
{ yM@sGz6c!
// output.writeLong(nPos); { im?tZ,
output.writeLong(fileSplitterFetch.nStartPos); giNXXjl
output.writeLong(fileSplitterFetch.nEndPos); &!X<F,
} HAK,z0/
output.close(); ^t4^gcoZ4Z
} f)T\
catch(IOException e){e.printStackTrace ();} >o1dc*
catch(Exception e){e.printStackTrace ();} @`L;_S+
} V*\hGNV
S}JOS}\^j
l}L81t7f
//读取保存的下载信息(文件指针位置) aH1CX<3)~
private void read_nPos() z)C/U
{ md+pS"8o;
try{ yor'"6)i
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); <jV,VKL#
int nCount = input.readInt(); QNx]8r
nStartPos = new long[nCount]; }qECpKa0
nEndPos = new long[nCount]; '9f0UtT|[
for(int i=0;i<nStartPos.length;i++) n<8WjrK
{ K{DC{yLu
nStartPos = input.readLong(); !lNyoX/
nEndPos = input.readLong(); qK.(wFx
} 0QZT<Zs
input.close(); X|{T ljn
} )]C]K B
catch(IOException e){e.printStackTrace ();} rk1,LsZVS
catch(Exception e){e.printStackTrace ();} #E!^oZm<Z
} #b[bgxm
R*:$^v@4
VNWB$mM.2
private void processErrorCode(int nErrorCode) JGHj(0j
{ S3%2T
System.err.println("Error Code : " + nErrorCode); gd0)s1{9
} 9$HKP9G
h<%$?h+}
4u}Cki,vOK
//停止文件下载 =_-u;w1D
public void siteStop() 2QaE&8vW
{ ~_EDJp1J
bStop = true; y`n?f|nf
for(int i=0;i<nStartPos.length;i++) o:QL%J{[
fileSplitterFetch.splitterStop(); vz4(
k/
B.G6vx4yp
L&kCI`Tb
} D^@@ P
} D{B?2}X
//负责部分文件的抓取 ]4H)GWHKg
**FileSplitterFetch.java _|M8xI
*/ \o[][R#D
package NetFox; c_vGr55
,A` |jF
EF
:g0$
import java.io.*; !j'LZ7
import java.net.*; 5T#v&
9DA|;|
P'8RaO&d
public class FileSplitterFetch extends Thread { A^z{n/DiL
Py
v>
v>`Fo[c
String sURL; //File URL 4O-LLH
long nStartPos; //File Snippet Start Position [Kc ?<3W
long nEndPos; //File Snippet End Position j<kW+Iio
int nThreadID; //Thread's ID Am*IC?@tq
boolean bDownOver = false; //Downing is over B%\&Q@X
boolean bStop = false; //Stop identical _\\Al v.
FileAccessI fileAccessI = null; //File Access interface ]\^O(BzB
ir}z^+
Y_[7q<L
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException %mmV#vwp
{ .hx(9
this.sURL = sURL; E\/[hT
this.nStartPos = nStart; ^o5;><S]
this.nEndPos = nEnd; rB".!b
nThreadID = id; 1+*sEIC "
fileAccessI = new FileAccessI(sName,nStartPos);//定位 i+O7," (@
} 'l5
HU>>\t?d
1@OpvO5
public void run() ^(:~8 h
{ [voZ=+/
while(nStartPos < nEndPos && !bStop) Q$5t~*$`
{ q~> +x?30
eAW)|=2
a9e0lW:=c
try{ :8@)W<>%
URL url = new URL(sURL); [Ep'm
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); v Z]j%c@
httpConnection.setRequestProperty("User-Agent","NetFox"); [mv? \HDa~
String sProperty = "bytes="+nStartPos+"-"; ;av!fK
httpConnection.setRequestProperty("RANGE",sProperty); CqEbQ>?
Utility.log(sProperty); H]tD~KM<
D'!JV1Q
t >"`rcg
InputStream input = httpConnection.getInputStream(); $CMye; yL
//logResponseHead(httpConnection); PMTrG78p*
Mbxl{M
>
hiVa\s
byte[] b = new byte[1024]; T9$~tv,5F
int nRead; [w<_Wj
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) f@;pN=PS
{ lUjZ=3"'
nStartPos += fileAccessI.write(b,0,nRead); 2g O@
//if(nThreadID == 1) IoOOS5a
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); )]q Qgc&
} ]8%E'd
1_{ e*=/y
6Tmz!E0
Utility.log("Thread " + nThreadID + " is over!"); 3?j:M]fR
bDownOver = true; ,Gv}N&
//nPos = fileAccessI.write (b,0,nRead); ?n{m2.H
} 2
)o2d^^
catch(Exception e){e.printStackTrace ();} h^rG5Q
} {,5.svO
} KH#z =_
U<&=pv
_5S0A0
//打印回应的头信息 KC}G_"f.$
public void logResponseHead(HttpURLConnection con) gnZ#86sO
{ J=Kv-@I>E
for(int i=1;;i++) 6rbR0dSgx
{ %pjY ^tM/
String header=con.getHeaderFieldKey(i); @,oc%m
if(header!=null) 3q`f|r
//responseHeaders.put(header,httpConnection.getHeaderField(header)); MD$W;rk(Hn
Utility.log(header+" : "+con.getHeaderField(header)); Pteti
else sT1k]duT
break; ;R0LJApey
} B ZU@W%E
} +)yoQRekX
[nHN@p|
B~}BDnu 6
public void splitterStop() M{orw;1Isy
{ O-7)"
bStop = true; TI8\qIW
} 5yt= ~
i
Ehc<
j7E;\AZ^
} vKW!;U9~P
k(Xs&f
`
^|oI^"IQ=
/* rr,A Vw
**FileAccess.java .s4vJKK0
*//文件访问(定位,写) ;/V])4=
package NetFox; FWeUZI+
import java.io.*; ~m<K5K6 V
(t3gNin
*PlKl_nP6
public class FileAccessI implements Serializable{ :j~4mb?$
JcYY*p
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 #QsJr_=
RandomAccessFile oSavedFile; Hc8^w6S1@
long nPos; u= dj3q
&b