/* X}]A_G
**SiteFileFetch.java 8JQ\eF$ma
*/ B1FJAKI);
package NetFox; fUCjC*#1
import java.io.*; S8kzAT
import java.net.*; Wj!+
E{y<r
0=U|7%dOL
A4rMJ+!5
public class SiteFileFetch extends Thread { %A3m%&(m&%
w2s06`g
x8C\&ivn
SiteInfoBean siteInfoBean = null; //文件信息Bean LibQlNW\
long[] nStartPos; //开始位置 IS!OO<
long[] nEndPos; //结束位置 (x\VGo
FileSplitterFetch[] fileSplitterFetch; //子线程对象 I0H]s/*C%9
long nFileLength; //文件长度 qAd=i0{N
boolean bFirst = true; //是否第一次取文件 6&;GC<].(y
boolean bStop = false; //停止标志 KX;JX*)J
File tmpFile; //文件下载的临时信息 J,?F+Qji&=
DataOutputStream output; //输出到文件的输出流 U8N X%*oW
LauGT* z!
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1MO-60
public SiteFileFetch(SiteInfoBean bean) throws IOException 2<!IYEyT
{ DOGGQ$0
siteInfoBean = bean; |qj"p
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); V'>P lb.A
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); -
7T`/6
if(tmpFile.exists ()) a6;[Z
{ -l_B;Sb:e
bFirst = false; PW5)") z
read_nPos(); :
qK-Rku
} e
T;@pc
else EqtL&UHe
{ R{Zd ]HT
nStartPos = new long[bean.getNSplitter()]; s I\-0og
nEndPos = new long[bean.getNSplitter()]; <%d!Sk4
} xk/-TXB
0
{irc~||4
&b^~0Z
l"+8>Mm
} QnP3U
%x{kd8>u!
{PxFG<^U
public void run() *U%3[6hm
{ OE0G*`m
//获得文件长度 G{4s~Pco[Q
//分割文件 ilK*Xo
//实例FileSplitterFetch FP=27=
//启动FileSplitterFetch线程 +'5I8FE-
//等待子线程返回 rOE:
ap|KL
try{ zdU46|!u
if(bFirst) "9c=kqkX
{ b+:J?MR;}
nFileLength = getFileSize(); &wY$G! P
if(nFileLength == -1) z7AWWr=H
{ flC%<V%'-
System.err.println("File Length is not known!"); <B0f
} Xj{fM\,"9
else if(nFileLength == -2) M!i|,S
{ l"}_+5
System.err.println("File is not access!"); F xm:m
} ?$)5NQB%
else _iq62[i3^
{ YI7M%B9Lj
for(int i=0;i<nStartPos.length;i++) >l AtfN='
{ "|1iz2L
nStartPos = (long)(i*(nFileLength/nStartPos.length)); [(3s5)O
} *@PM,tS;
for(int i=0;i<nEndPos.length-1;i++) {]}94T~/k
{ 7mdd}L^h
Z
nEndPos = nStartPos[i+1]; # >bj6<
} M$Z2"F;
nEndPos[nEndPos.length-1] = nFileLength; t>?tWSNf
} *n EkbI/
} 4LB8p7$|a3
^5Lk}<utw
UsFn! !+
//启动子线程 .S-)
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; m Rw0R{
for(int i=0;i<nStartPos.length;i++) EV{Ys}3M
{ (oX!D(OI
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 54z.@BJhE
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), J@$~q}iG
nStartPos,nEndPos,i); OHpV%8`
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :yD>Tn;1
fileSplitterFetch.start(); HLwMo&*rA
} 'n,V*9
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bz#]>RD
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =iKl<CqI$E
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 1VM2CgR a
nEndPos = " + nFileLength); 9!uiQ
// fileSplitterFetch[nPos.length-1].start(); fM"*;LN!N
=s4(Y
Lm2!<<<
//等待子线程结束 3rKJ<(-2/
//int count = 0; ]'(D*4
//是否结束while循环 %2zmc%]r
boolean breakWhile = false; =gQ9>An
~o%igJ
}.C
xH*X5?
while(!bStop) HVHv,:bPo
{ }/vW"&h-
write_nPos(); Yjjh}R#
Utility.sleep(500); I6f/+;E
breakWhile = true; m]AT-]*f
edq,:
eyyME c!
for(int i=0;i<nStartPos.length;i++) esnq/
{ mvZ#FF1,J
if(!fileSplitterFetch.bDownOver) *$vH]>)p
{ *|dr-e_j
breakWhile = false; }Rw ,4
break; .M^[/!
} tWIJ,_8l
} ciS,
if(breakWhile) =zyA~}M2
break; <R /\nY Xz
GcdJf/k
2Ckx.m &
//count++; HTOr
//if(count>4) m<-ShRr*b
// siteStop(); , [|aWT%9
} z6ObX
-U=Ci
@9B*V~ <
System.err.println("文件下载结束!"); dg24h7|]
} erUYR"
catch(Exception e){e.printStackTrace ();} aE`d[dSG
} +GI906K
Q<
:RLKVT
R{H[< s+n
//获得文件长度 R2Fjv@Egk
public long getFileSize() D=#RQ-
{ $0 olqt:
int nFileLength = -1; 4D0jt$==
try{ uX6yhaOp|
URL url = new URL(siteInfoBean.getSSiteURL()); LTTMa-]Yy
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); {p84fR1P
httpConnection.setRequestProperty("User-Agent","NetFox"); tR|dnC4U
a]T:wUYG'
h)HEexyRg
int responseCode=httpConnection.getResponseCode(); Kgu8E:nL
if(responseCode>=400) sCFxn
{ i3,IEN
processErrorCode(responseCode); Mqr_w!8d
return -2; //-2 represent access is error !5o j~H
} e|\xFV=4
IW0S*mO$
i7Up AHd/
String sHeader; }uZs)UQ|$
/kbU<
S<"Fp1#"l
for(int i=1;;i++) aj1]ZT\
{ V 95o(c.p
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); cKt=?
//Utility.log(in.readLine()); B{nwQC b
sHeader=httpConnection.getHeaderFieldKey(i); >qmCjY1
if(sHeader!=null) ;miif
{ Q\N*)&Sd<M
if(sHeader.equals("Content-Length")) +i&<`ov
{ Q 7_5
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 3f[Yk#"
break; .S/5kLul
} o.{W_k/n
} 6Wu*zY_+
else e73=*~kfR
break; 8W\yM;'
} _}R[mr/
} 4dX{an]Cz
catch(IOException e){e.printStackTrace ();} X7},|cmD_
catch(Exception e){e.printStackTrace ();} mM,HMrgLqK
).SJ*Re*^I
k
QuEG5n.-
Utility.log(nFileLength); R~\R>\
Jb QK$[z"
ZZY# .
return nFileLength; ]M7FIDg
} (~GQncqa
F8f}PV]b
h'y%TOob
//保存下载信息(文件指针位置) X-c|jn7
private void write_nPos() Y![Q1D!
{ X Q#K1Z
try{ v>8C}d^
output = new DataOutputStream(new FileOutputStream(tmpFile)); OETo?Wg1Z
output.writeInt(nStartPos.length); J}#gTG( '
for(int i=0;i<nStartPos.length;i++) ?=? _32O
{ >'*%wf[{
// output.writeLong(nPos); 6 c_#"4
output.writeLong(fileSplitterFetch.nStartPos); -s3`mc}*
output.writeLong(fileSplitterFetch.nEndPos); xZ'fer`&
} 'C1lP)S5
output.close(); Q^(CqQo!<
} P.Z:`P)
catch(IOException e){e.printStackTrace ();} \}Jznzx;
catch(Exception e){e.printStackTrace ();} !dLu($P
} 2J7|y\N,
?jmP]MM
DrK]U}3fh"
//读取保存的下载信息(文件指针位置) 1q6)R/P
private void read_nPos() jn<?,UABD
{ uX_H;,n
try{ o(*\MTt?
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ~g{j)"1
int nCount = input.readInt(); *~vB6V|1
nStartPos = new long[nCount]; v:t;Uk^Y
nEndPos = new long[nCount]; M3tl4%j
for(int i=0;i<nStartPos.length;i++) a:BW*Hy{\
{ IO\l8G
nStartPos = input.readLong(); ^A$=6=CX
nEndPos = input.readLong(); DrJ?bG;[
} m$T5lKn}U?
input.close(); }"D;?$R!
} ?I}RX~Tgg
catch(IOException e){e.printStackTrace ();} G:AA>t
catch(Exception e){e.printStackTrace ();} 5\Q Tm;
} p*;!5;OUR
?qgQ)#6
3s6obw$ki
private void processErrorCode(int nErrorCode) }`uyOgGg*
{ Q5,zs_j
System.err.println("Error Code : " + nErrorCode); cOV j @z
} yHeL&H
J p'^!
{L-^J`> G
//停止文件下载 O^L]2BVC
public void siteStop() ;wn9
21r
{ pY31qhoZ.
bStop = true; `YNzcn0x
for(int i=0;i<nStartPos.length;i++) Sdu\4;(
fileSplitterFetch.splitterStop(); #])"1fk
bb6x} jR
(GJtTp~2C4
} gv*b`cl
} OoB|Eh|),
//负责部分文件的抓取 }y(t')= 9
**FileSplitterFetch.java IW~R{ ]6
*/ TM)INo^
package NetFox; j4$nr=d.6
PLCm\Oh$l
Na0^csPm
import java.io.*; +kL7"
import java.net.*; r w?wi}}gn
6jq*lnA%
q0.!T0i
public class FileSplitterFetch extends Thread { IZZAR
(i~UH04r>s
c4H6I~2Na
String sURL; //File URL /Hr|u
long nStartPos; //File Snippet Start Position B2;P%B
long nEndPos; //File Snippet End Position `16'qc
int nThreadID; //Thread's ID 1j?P$%p
boolean bDownOver = false; //Downing is over Y~"tL(WfJl
boolean bStop = false; //Stop identical _*mn4n=
FileAccessI fileAccessI = null; //File Access interface P5Xp #pa
AyE*1 FD
.S
k+"iH5
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException "Z.6@
c7
{ p{Lrv%-j
this.sURL = sURL; ynIe4b
this.nStartPos = nStart; ]A5F}wV4
this.nEndPos = nEnd; ha
:l-<a
nThreadID = id; 7HPwlS
fileAccessI = new FileAccessI(sName,nStartPos);//定位 jSI1tW8
} fn}E1w
~+Wx\:TT
vjEDd`jYZ
public void run() Mu3G/|t(
{ , $ 7-SN
while(nStartPos < nEndPos && !bStop) WVP?Ie8
{ "N+4TfXy
25X|N=}
7-744wV}Z
try{ Kb; *"@LX
URL url = new URL(sURL); WtOjPW
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o,7|=.-b
httpConnection.setRequestProperty("User-Agent","NetFox"); T?8BAxC?K
String sProperty = "bytes="+nStartPos+"-"; _XZ
Gj:V
httpConnection.setRequestProperty("RANGE",sProperty); f"Sp.'@
Utility.log(sProperty); 0#V"
Y@FYo>0O
\BHZRytQF
InputStream input = httpConnection.getInputStream(); ,rB(WKU
//logResponseHead(httpConnection); [ V.67_~
OyO<A3
/~,*DH$)
byte[] b = new byte[1024]; }B0[S_mw
int nRead; <"3q5ic/Z
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) .j4y0dh33
{ 72nZ`u
nStartPos += fileAccessI.write(b,0,nRead); )tlj{ 7p
//if(nThreadID == 1) iv*RE9?^
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); pwo$qs(p
} ex>7f%\
9\8ektq}Z
R27'00(Z0
Utility.log("Thread " + nThreadID + " is over!"); `l|Oj$
bDownOver = true; oCT,v 0+4O
//nPos = fileAccessI.write (b,0,nRead); zyPb\/
} Wl| i$L)7
catch(Exception e){e.printStackTrace ();} $ }/tlA&e
} 7Z>vQ f B
} >CvhTrPI
ka_m
Q<{9
#9GfMxH
//打印回应的头信息 ?`RlYu
public void logResponseHead(HttpURLConnection con) /pF8S!,z
{ rN1]UaT
for(int i=1;;i++) ;hQ[-
{ By1Tum+I1
String header=con.getHeaderFieldKey(i); ilL%
if(header!=null) ^Gk)aX
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Cu@q*:'
Utility.log(header+" : "+con.getHeaderField(header)); , Q0Y} )
else ?`+VWa[,e
break; \GEz.Vb
} :!Ci#[g
} (wu'FFJp#
Kw-<