/* 6tOi^+qN
**SiteFileFetch.java X9'xn 0n;
*/ s!h5hwBY
package NetFox; 1<uwU(
import java.io.*; tE!'dpG5)
import java.net.*; 0&`}EXe<f
#t5juX9Ho9
b*9e1/]
public class SiteFileFetch extends Thread {
3t
;]h.m)~|
hU,$|_WDy
SiteInfoBean siteInfoBean = null; //文件信息Bean 4]UT+'RubX
long[] nStartPos; //开始位置 *5wv%-
long[] nEndPos; //结束位置 v7@H\x*
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Qp&?L"U)2
long nFileLength; //文件长度 !b%,'f y)
boolean bFirst = true; //是否第一次取文件 F7uhuqA]N
boolean bStop = false; //停止标志 +)-d_K.(k
File tmpFile; //文件下载的临时信息 N^@
\tg=
DataOutputStream output; //输出到文件的输出流 II#
Y}/jR6hK
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Q=.g1$LP
public SiteFileFetch(SiteInfoBean bean) throws IOException * NMQ
{ aBCOGtf
siteInfoBean = bean; q<}PM
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); d5, FM
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 7l}~4dm2J
if(tmpFile.exists ()) #v qz{R~nM
{ uAb 03Q
bFirst = false; A;%kl`~iyz
read_nPos(); ry,}F@P&
} sM9-0A
else /s-d?
{ luF#OP C
nStartPos = new long[bean.getNSplitter()]; $f(agG]
nEndPos = new long[bean.getNSplitter()]; G4yUC<TqBP
} 5TET<f6R
&V;x 4
ew"m!F#
B_@7IbB
} 6ZHv,e`?
nE<J`Wo$f
RQ5P}A
3H
public void run() K|~AA"I;
{ jmPp-}tS7
//获得文件长度 S%V%!803!
//分割文件 IuWX*b`v
//实例FileSplitterFetch ~mcZUiP9
//启动FileSplitterFetch线程
H8"tbU
//等待子线程返回 cX"G7Bh
try{ iJ*%dio
if(bFirst) q+J0}y{#8)
{ _U=S]2QW
nFileLength = getFileSize(); q/J3cXa{K
if(nFileLength == -1) (v|`LmV
{ g!5#,kJM
System.err.println("File Length is not known!"); o?=fhc
} >;.*
else if(nFileLength == -2) [5pn@o
{ W["HDR
System.err.println("File is not access!");
jrdtd6b}
} -~]^5aa5n
else M[vCpa
{ _pW'n=}R
for(int i=0;i<nStartPos.length;i++)
G%`cJdM
{ V"U~Q=`K
nStartPos = (long)(i*(nFileLength/nStartPos.length)); `NoCH[$!+
} I9:%@g]uYw
for(int i=0;i<nEndPos.length-1;i++) j>g9\i0O1
{ +9}' s{
nEndPos = nStartPos[i+1]; 0, "ZV}
} wJr/FE7c
nEndPos[nEndPos.length-1] = nFileLength; 2?pM5n
} R''Sfz>8
} X?_v+'G
P ]_Vz
L`JY4JM"
//启动子线程 ;lk f+,;
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; h?3f5G*&H
for(int i=0;i<nStartPos.length;i++) t.u{.P\Md\
{ x6~Fb~aP
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9Iy[E,j
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), X~#@rg!"
nStartPos,nEndPos,i);
`;T?9n
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); td`wNy\
fileSplitterFetch.start(); *ig5Q(b*N
} ur`V{9g
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9cbB[c_.
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); hAYQ6g$A
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", &,Uc>L%m
nEndPos = " + nFileLength); RDJ82{
// fileSplitterFetch[nPos.length-1].start(); IBF.&[[S
$&NbLjeS
>0ssza
//等待子线程结束 =1_j aDp
//int count = 0; gFgcxe6
//是否结束while循环 H.f9d.<W%
boolean breakWhile = false; bv_AJ4gS
1w6.
mURX I'JkX
while(!bStop) :hi$}xHa
{ 'fXer!L}
write_nPos(); F}\[eFf[
Utility.sleep(500); CVi<~7Am\
breakWhile = true; 79y'Ja+`j
I *1#
!fif8kf
for(int i=0;i<nStartPos.length;i++) Yr Preuh
{ R2 'C s
if(!fileSplitterFetch.bDownOver) s@R3#"I
{ F'fM?!(
breakWhile = false; yFa&GxSq
break; %Ud.SJ3
} jWz|K
} &<m
WA]cAL
if(breakWhile) RNsJ!or
break; Q9SPb6O2
pZW}^kg=
; \Y-
//count++; $K;_Wf
//if(count>4) xXl$Mp7
// siteStop(); eDvXU_yA
} {_+>"esc
T9,lblUQ
G`&'Bt{Z*
System.err.println("文件下载结束!"); NN?Bi=&9
} `,<>){c|
catch(Exception e){e.printStackTrace ();} !<JG&9ODP
} ^$3w&$K*
HP1X\h!Ke
h%4~0
//获得文件长度 =r=^bNO
public long getFileSize() hnlU,p&y3
{ #IcT
@(
int nFileLength = -1; s#4))yUR6Z
try{ )3d:S*ly
URL url = new URL(siteInfoBean.getSSiteURL()); mvxc[
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %@)U/G6s}
httpConnection.setRequestProperty("User-Agent","NetFox"); u9da]*\7y
k0Oc,P`'*
Va&KIHw
int responseCode=httpConnection.getResponseCode(); JT}dor
if(responseCode>=400) OqUE4.vIP
{ :z}~U3,JE
processErrorCode(responseCode); K.c6Rg
return -2; //-2 represent access is error Fvcq^uZ
} o%QhV6(F
,5%aP%
M}{n6T6B
String sHeader; !dYX2!lvT
P<g|y4h
_~(MA-l
for(int i=1;;i++) kY0g}o'<
{ AF07KA#
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Qt)7mf
//Utility.log(in.readLine()); t~udfOvY
sHeader=httpConnection.getHeaderFieldKey(i); ~%::r_hQ
if(sHeader!=null) :5n"N5Go
{ +$Ddd`J'
if(sHeader.equals("Content-Length")) 4l#T_y
{ SvCK;$:
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); w2RESpi
break;
$Adp
} M?:f^
} ?Ix'2v
else (>kBmK1Aj
break; +;4AG::GN
} 'bQs_
} ;nHo%`Zt
catch(IOException e){e.printStackTrace ();} -6*OF.Ag`
catch(Exception e){e.printStackTrace ();} 8M5!5Jzv
$rV:&A
{&Gk.ODI7
Utility.log(nFileLength); +"fM &F]
*U5>j#,
p3'mJ3MA
return nFileLength; *]DJAF]
} XJV3oj
2Q;Y@%G
HtS1N}@
//保存下载信息(文件指针位置) rVIb'sa
private void write_nPos() /s-jR]#VA
{ 5O4&BxQ~}
try{ t8wz'[z
output = new DataOutputStream(new FileOutputStream(tmpFile)); -;DE&~p
output.writeInt(nStartPos.length); oVxV,oH(
for(int i=0;i<nStartPos.length;i++) tkUW)ScJ
{ y}H*p
// output.writeLong(nPos); ?geWR_Z
output.writeLong(fileSplitterFetch.nStartPos); ~,3v<A[5Vi
output.writeLong(fileSplitterFetch.nEndPos); a#~Z5>{
} y("0Xve
output.close(); <aQ; "O~
} M<|~MR
catch(IOException e){e.printStackTrace ();} 1\7"I-
catch(Exception e){e.printStackTrace ();} \!4ghev3
} J.+?*hcw
|4 d{X@`&
:[ZC-hc\
//读取保存的下载信息(文件指针位置) bC,M&<N
private void read_nPos() >?uH#%C5
{ uk>/Il
try{ K:Xrfn{s
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); x4 A TK
int nCount = input.readInt(); yz&q2
nStartPos = new long[nCount]; Qe=Q8cT
nEndPos = new long[nCount]; O( sFs1
for(int i=0;i<nStartPos.length;i++) (B~V:Yt
{ VHY<(4@
nStartPos = input.readLong(); vGMOXbq4&
nEndPos = input.readLong(); 8b#Yd
} vN6]6nUOiT
input.close(); ~Hs]} Xo
} w[$Wpae
catch(IOException e){e.printStackTrace ();} m6ZbYF-7W
catch(Exception e){e.printStackTrace ();} ZJJl944
} ,uD*FSp>
G5e Ls
v!v0,?b*
private void processErrorCode(int nErrorCode) B}xo|:f!zj
{ @_weMz8}
System.err.println("Error Code : " + nErrorCode); yK2*~T,6@
} 7{/:,
:e9jK[)h0
8T1DcA*
//停止文件下载 A?Hjz%EcW
public void siteStop() U"R.!=v
{ RAkFgC~
bStop = true; p2_Zsq
for(int i=0;i<nStartPos.length;i++) 4~D>oNx4
fileSplitterFetch.splitterStop(); ?jM7C}
t>=y7n&q
1V9X(uP
} 2b&;Y /z
} (NWN&
//负责部分文件的抓取 e4_aKuA
**FileSplitterFetch.java `8b6
/
*/ SJuf`
package NetFox; Q24:G
(Vv[
}4ghT(C}$
import java.io.*; rp[oH=&
import java.net.*; UDi3dH=
rM?Dp2
m$UT4,Ol
public class FileSplitterFetch extends Thread { aFm]?75
d4eC Bqx
es(LE/`e
String sURL; //File URL n^(yW
long nStartPos; //File Snippet Start Position Vv"wf;#
long nEndPos; //File Snippet End Position I4p= ?Ds
int nThreadID; //Thread's ID _e@qv;*
boolean bDownOver = false; //Downing is over F'_8pD7
boolean bStop = false; //Stop identical DlkKQ
FileAccessI fileAccessI = null; //File Access interface pvdZ>D-IU
HG6{`i
[/,6O
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException fvAV[9/-
{ )mO;l/,0
this.sURL = sURL; 21EUP6}8j
this.nStartPos = nStart; pnw4QQ9
this.nEndPos = nEnd; S^"e5n2
nThreadID = id; z00:59M4
fileAccessI = new FileAccessI(sName,nStartPos);//定位 GSb)|mj
} =FJ9wiL
>-o:>
5
cz~FWk
public void run() !?M_%fNE
{ M&T/vByTn_
while(nStartPos < nEndPos && !bStop) d/zX%
{ 8BH)jna`Qo
Leick6
Wn#JYp
try{ v})Ti190
URL url = new URL(sURL); a7d-
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); R;,HtN
httpConnection.setRequestProperty("User-Agent","NetFox"); K?m:.ZM
String sProperty = "bytes="+nStartPos+"-"; kb\v}gfiD/
httpConnection.setRequestProperty("RANGE",sProperty); |.8=gS5
Utility.log(sProperty); dw}3B8]
|]3);^0
Ln%_8yth
InputStream input = httpConnection.getInputStream(); 10a*7 L
//logResponseHead(httpConnection); @Lv_\^2/}
}$c( $
S_;:iC]B
byte[] b = new byte[1024]; pXlBKJmW
int nRead; `i^1U O
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) "J:NW_U
{ \$|UFx
nStartPos += fileAccessI.write(b,0,nRead); ~:b~f]lO
//if(nThreadID == 1) nt`l6b
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); RSeezP6#
} H 6<@
uvM88#
`B0*/ml
Utility.log("Thread " + nThreadID + " is over!"); DL!s)5!M
bDownOver = true; &-Y:4.BX Z
//nPos = fileAccessI.write (b,0,nRead); 07Cuoqt2
} z ate%y
catch(Exception e){e.printStackTrace ();} zO]dQ$r\Z
} x=+I8Q4:
} K'/x9.'%
F5q1VEe
OHvzK8
//打印回应的头信息 ?0&>?-?
public void logResponseHead(HttpURLConnection con) rzj'!~>U
{ kYa'
] m
for(int i=1;;i++) HliY
{ =gyK*F(RK
String header=con.getHeaderFieldKey(i); 5h7DVr!
if(header!=null) bu5)~|?{t
//responseHeaders.put(header,httpConnection.getHeaderField(header)); #7"5Y_0-
Utility.log(header+" : "+con.getHeaderField(header)); ] CE2/6Ph
else sgsMlZ3/
break; <W^~Y31:0
} KePHn:c
} 0].5[Jo
'Em($A(
UzwIV{
public void splitterStop() )U`kU`+'
{ Tj+WO6#V
bStop = true; 5X-{|r3q
} n_2LkW<?
4rdrl
#!@
]%4
} ]qRz!D%@^
9:~^KQ{?
o>%W7@Pr
/* 86Vu PV-
**FileAccess.java k_`S[
*//文件访问(定位,写) o#b9M4O
package NetFox; y
+vcBuX
import java.io.*; \bE~iz3b9
svgi!=
Wd<}|?R
public class FileAccessI implements Serializable{ 9V!K._Cb
,%<77LE
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 M#|xj <p
RandomAccessFile oSavedFile; _<