/* >~})O&t
**SiteFileFetch.java Tb!jIe
*/ Rg 5kFeS
package NetFox; #pk
import java.io.*; @k\npFKQm
import java.net.*; rVB\\
dg4q+
1B~[L 5p9
public class SiteFileFetch extends Thread { 5?|yYQM0tK
hx8.
!CR#Fyt+9
SiteInfoBean siteInfoBean = null; //文件信息Bean d*l2x[8}g-
long[] nStartPos; //开始位置 )^m"fQ+
long[] nEndPos; //结束位置 R+tQvxp#
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Rl n% Y
long nFileLength; //文件长度 eDsc_5I
boolean bFirst = true; //是否第一次取文件 0+Q;a
boolean bStop = false; //停止标志 URj2 evYW
File tmpFile; //文件下载的临时信息 abg`:E
DataOutputStream output; //输出到文件的输出流 *@g>~q{`
Gq{ );fq
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) om8`^P/b
public SiteFileFetch(SiteInfoBean bean) throws IOException 5?8jj
{ H.&"~eH
siteInfoBean = bean; 6)_h'v<|M
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); NB3ar&.$S
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); W('V2Z-q
if(tmpFile.exists ()) #^xj"}o@
{ ~$m:j];
bFirst = false; l{hO"fzy
read_nPos(); VCa`|S?2
} 'LC0hoV
else ?%Gzd(YEY
{ "-g5$v$de
nStartPos = new long[bean.getNSplitter()]; \ `|
nEndPos = new long[bean.getNSplitter()]; 6`Diz_(
} QUWx\hqE
{gI% -
$j/#IzD1D
]:~z#k|2@6
} oVY_|UujG
~{l @
[I78<IJc
public void run() $.3J1DU
{ x57O.WdN
//获得文件长度 S+GW}?!
//分割文件 /hAy1V6
//实例FileSplitterFetch 3 V$
\s8
//启动FileSplitterFetch线程 ,e;_
Vb
//等待子线程返回 afd.v$63
try{ synueg
if(bFirst) qq>Qi (>
{ p']{WLDj2
nFileLength = getFileSize(); .@@&q4=&
if(nFileLength == -1) ),5A&qT*
{ a|Wrc)UR
System.err.println("File Length is not known!"); ^tI4 FQ>Y
} x]vyt}oCmk
else if(nFileLength == -2) Q$A;Fk}-
{ .7> g8
System.err.println("File is not access!"); bZu2.?{
} tkW7wP;
else =1zRm >m
{ |l:,EA_v|
for(int i=0;i<nStartPos.length;i++) fHXz{,?/w
{ U_~r0
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 8}?w%FsN#
} !&pk^VFl+
for(int i=0;i<nEndPos.length-1;i++) W$:D#;jz`h
{ p/KG{-f,
nEndPos = nStartPos[i+1]; ]*<!|;q
} ! l"*DR
nEndPos[nEndPos.length-1] = nFileLength; 76b2 3|
} bpdluWS+ )
} rN`-ak
e5m]mzF@
Dw.Pv)'$
//启动子线程 kg^5D3!2{Q
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ]P)2Q!X
for(int i=0;i<nStartPos.length;i++) QG5)mIJ
{ JY$+<`XM
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Vs(D(d,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), lVgin54Q
nStartPos,nEndPos,i); UH#S |o4
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); n_4BNOZ~
fileSplitterFetch.start(); F **/T
} P7*?E*
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), c!] yT0v&s
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 6k;>:[p
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", '%*/iH6<U{
nEndPos = " + nFileLength); /~P4<1
// fileSplitterFetch[nPos.length-1].start(); =Q4Wr0y><]
f!J?n]
CQ'4 ".7
//等待子线程结束 wc?YzXP+
//int count = 0; 0xUn#&A~
//是否结束while循环 I?CfdI
boolean breakWhile = false; !}=#h8fv
;upYam"
)zu m.6pT
while(!bStop) \:E=B1
{ OhTd>~R`<
write_nPos(); GP_%.fO\M
Utility.sleep(500); ;9hS_%ldX4
breakWhile = true; *ch7z|wo.
G@rV9
fT5vO.a
for(int i=0;i<nStartPos.length;i++) .cs4AWml<
{ O[z-K K<
if(!fileSplitterFetch.bDownOver) LcGG~P|ML
{ G1ED=N_#
breakWhile = false; lSBu,UQP
break; ?y,z
} K.42 VM)F
} +7j7zpw
if(breakWhile) oFp4*<\
break; AhQsv.t
v[<;z(7Qk
E<77Tj
//count++; ^-%O
//if(count>4) N9=?IFEe]
// siteStop(); pW-aX)\DR
} ||'A9
X"S")BQ
q
#%.fsJNA$
System.err.println("文件下载结束!"); _"lW
} jB3Rue:+g
catch(Exception e){e.printStackTrace ();} "T~A*a^
} "2hs=^&8
Y
>U_l:_^
/v7o!D1G
//获得文件长度 CB>*(Mu
public long getFileSize()
P5`BrY,hZ
{ 2I0Zr;\f
int nFileLength = -1; =S|dzgS/
try{ oe{,-<yck
URL url = new URL(siteInfoBean.getSSiteURL()); u9G
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); (XQ:f|(
httpConnection.setRequestProperty("User-Agent","NetFox"); {3K`yDF
/N=M9i\;
SD]rYIu+
int responseCode=httpConnection.getResponseCode(); zS! +2/(
if(responseCode>=400) zj7?2
{ (RI+4V1
processErrorCode(responseCode); A (ZtA[G
return -2; //-2 represent access is error ;oVFcZSA
} ;f9a0V s
)\QPUdOvx
5k`Df/
String sHeader; tWITr
5.F/>?<
#NQx(C
for(int i=1;;i++) -~&T0dt~
{ KdLj1T
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); UI74RP
//Utility.log(in.readLine()); U9x6\Iy
sHeader=httpConnection.getHeaderFieldKey(i); ;#ElJXS
if(sHeader!=null) R;H>#caJ
{ ApqNV
if(sHeader.equals("Content-Length")) vec4R )S
{ $DhW=(YM_a
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); {@
Z%6%'9
break; *&$2us0%%
} b2UqN]{
} JjnWv7W3$
else k:*vD"
break; gi<%: [jT
} <Eh_
} WU{9lL=
catch(IOException e){e.printStackTrace ();} |/~ISB
catch(Exception e){e.printStackTrace ();} pU[5f5_
oU)3du
l'kVi
Utility.log(nFileLength); YguY5z
T!QAcO
{i/7Nx
return nFileLength; h[r)HX0hA
} / e]R0NI
:p.f zL6X
.pPtBqp
//保存下载信息(文件指针位置) 0 1:(QJ
private void write_nPos() D@`"99z
{ .*nr3dY
try{ {lN G:o
output = new DataOutputStream(new FileOutputStream(tmpFile)); i#(+Kxr]>
output.writeInt(nStartPos.length); Y(h(Z
for(int i=0;i<nStartPos.length;i++) 30Udba+{]p
{ cb%ML1c
// output.writeLong(nPos); :?H1h8wbCt
output.writeLong(fileSplitterFetch.nStartPos); gCv[AIE_m
output.writeLong(fileSplitterFetch.nEndPos); \x=!'
} >W^)1E,Qh
output.close(); .'=-@W*
} \Vl)q>K_h
catch(IOException e){e.printStackTrace ();} 17yg ~
catch(Exception e){e.printStackTrace ();} ew*;mQd
} 5~=wia
gwN
y]!
T,5(JP(h3
//读取保存的下载信息(文件指针位置) NU.YL1
private void read_nPos() /|,:'W%U
{ Y!3i3D
try{ oE$zOS&2
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); :}[D;cx
int nCount = input.readInt(); 9 N9Q#o$!.
nStartPos = new long[nCount]; F{F SmUxzK
nEndPos = new long[nCount]; JwcC9
O
for(int i=0;i<nStartPos.length;i++) RgLk AHA
{ JeU1r-i
nStartPos = input.readLong(); apv"s+
nEndPos = input.readLong(); E
rnGX#@v
} 4|xQQv
input.close(); f(.t0{Etq
} ,Zb_Pu
catch(IOException e){e.printStackTrace ();} .5+5ca
catch(Exception e){e.printStackTrace ();} #E@X'jwu
} 1-?TjR
0{sYD*gK]
G[\3)@I
private void processErrorCode(int nErrorCode) GFgh{'|
{ q.v_?X<_
System.err.println("Error Code : " + nErrorCode); ?tf<AZ=+^L
} |eH*Q%M
tz_WxOQ0
9~yp=JOV@
//停止文件下载 a\Dw*h?b~
public void siteStop() 0m'tPFQ|
{ ^LAdN8Cbb
bStop = true; 4/E>k <MA
for(int i=0;i<nStartPos.length;i++) -k}&{v
fileSplitterFetch.splitterStop(); -SKcS#IF
-|`E'b81
vff`Xh>k(
} m,#Us
} Y$N D
//负责部分文件的抓取
nIv/B/>pZ
**FileSplitterFetch.java F/0x`l
*/ 5c-'m?k
package NetFox; *","u;&
Mx=L lC)
lv\^@9r
import java.io.*; ]M/*Beh
import java.net.*; J3AS"+]
cT3 s{k
b"&1l2\ A
public class FileSplitterFetch extends Thread { U$T
(R2@
BH^8!7dkT
e7JZk6GP#9
String sURL; //File URL s78V \Vw3
long nStartPos; //File Snippet Start Position y<n<uZ;
long nEndPos; //File Snippet End Position ej{7)#
int nThreadID; //Thread's ID Nj;G%KAP
boolean bDownOver = false; //Downing is over 7"$9js 2
boolean bStop = false; //Stop identical 21.N+H'
FileAccessI fileAccessI = null; //File Access interface za[;d4<}k
Rb_+C
?8R
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException G,A;`:/
{ LJmRa
this.sURL = sURL; IC@-`S#F
this.nStartPos = nStart; >y^zagC*
this.nEndPos = nEnd; ,v>|Ub,
nThreadID = id; mKhlYVn
fileAccessI = new FileAccessI(sName,nStartPos);//定位 h!~u^Z.7<
} &*!) d"
5=9gH
vm`\0VGSW
public void run() E>w|i
{ eVujur$P
while(nStartPos < nEndPos && !bStop) t7b\ #o
{ +B-;.]L
T
jGKas I`
]6TX)1
try{ J)a^3>
URL url = new URL(sURL); /_CSRi&
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7s.vJdA]6
httpConnection.setRequestProperty("User-Agent","NetFox"); A_<1}8{L
String sProperty = "bytes="+nStartPos+"-"; Q^\f,E\S
httpConnection.setRequestProperty("RANGE",sProperty); :H`Z.>K
Utility.log(sProperty); h6C:`0o
Kgu#Mi~
-
]Mp<Y
InputStream input = httpConnection.getInputStream(); IL N0/eH
//logResponseHead(httpConnection); 7P7d[KP<
%eLf6|1x
.T }q"
byte[] b = new byte[1024]; ,?Nc\Q<:
int nRead; 5sK1rDN
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) :} 9Lb)Yp
{ TrC :CL
nStartPos += fileAccessI.write(b,0,nRead); 7T-}oNaJA\
//if(nThreadID == 1) Wf!<Qot|R#
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); d@,3P)?
} &P3ep[]j
Y"Y+U`Qt
Pg/$N5->
Utility.log("Thread " + nThreadID + " is over!"); zoI0oA
bDownOver = true; 9Z;"9$+M
//nPos = fileAccessI.write (b,0,nRead); M8iI e:{ c
} Aq"<#:
catch(Exception e){e.printStackTrace ();} 30nR2mB
Kt
} wf=M|
#}_
} 3rQ;}<*M
g7nqe~`{
H`X>
//打印回应的头信息 TWAt)Q"J
public void logResponseHead(HttpURLConnection con) n8vteGQ
{ p:q?8+W-r
for(int i=1;;i++) 3tIno!|
{ b~<Tgo_/jf
String header=con.getHeaderFieldKey(i); 2%zJI"Ic
if(header!=null) 2v9T&xo=
//responseHeaders.put(header,httpConnection.getHeaderField(header)); cpg+-Zf%
Utility.log(header+" : "+con.getHeaderField(header)); @E@5/N6M
else j,i>
1|J
break;
{]=oOy1
} #{oGmzG!
} p:9^46N@
dqo&3^px
A%dI8Z,
public void splitterStop() %K|+4ZY3
{ vaOCH*}h
bStop = true; Ci?A4q$.
} bP8O&