/* &, a3@i
**SiteFileFetch.java ~qP[eWe
*/ >{zk
qvsQ&
package NetFox; x!<yT?A
import java.io.*; |V,<+BEi
import java.net.*; *f+: <=i
/bRg?Q
@x&P9M0g
public class SiteFileFetch extends Thread { E,[xUz"
J$ut_N):N
Lxl_"kG
SiteInfoBean siteInfoBean = null; //文件信息Bean X[$++p
.
long[] nStartPos; //开始位置 fxQN+6;
long[] nEndPos; //结束位置 ssQ BSbx
FileSplitterFetch[] fileSplitterFetch; //子线程对象
%yS3&Ju
long nFileLength; //文件长度 3251Vq %
boolean bFirst = true; //是否第一次取文件 1R%1h9I4'
boolean bStop = false; //停止标志 ro~+j}*
File tmpFile; //文件下载的临时信息 y'C-[nk
DataOutputStream output; //输出到文件的输出流 Tny>D0Z#
Z}6^ve
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =6nD sibf
public SiteFileFetch(SiteInfoBean bean) throws IOException 5jcte<
5I_
{ S=|@L<O
siteInfoBean = bean; Q /x8 #X
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ~aK?cP
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); qt e>r
if(tmpFile.exists ()) pW\'ZRj
{ )X+mV
bFirst = false; 6QQfQ,
read_nPos(); qCQ./"8
} 15\Ph[6g
else !
NV#U
{ *?p|F&J
nStartPos = new long[bean.getNSplitter()]; j Ch=@<9
nEndPos = new long[bean.getNSplitter()]; Q4]4@96Aj
} kLSrj\6I[
6=GZLpv
W&Y"K)`
VyLH"cCv
} eDKxn8+(H
D@ek9ARAq
I27,mS+]
public void run() F=a+z/xKT
{ &dB-r&4;+
//获得文件长度 %q3$|>
//分割文件 !RvRGRSyF
//实例FileSplitterFetch lEjwgk {
//启动FileSplitterFetch线程 /! ajsn
//等待子线程返回 F'RUel_%
try{ =3xE:
if(bFirst) 7E$&2U^Js
{ iP@6hG`:
nFileLength = getFileSize(); iPG0o
%
if(nFileLength == -1) *~XA'Vw!
{ Kb;dKQ
System.err.println("File Length is not known!"); $D1w5o-
} RBKOM$7
else if(nFileLength == -2) :*514N
{ ]jMKC8uz
System.err.println("File is not access!"); dtStTT
} S^I,Iz+`S'
else 7j<e)"
{ Dr3n+Q
for(int i=0;i<nStartPos.length;i++) m|tC24
{ DbI!l`Vn4
nStartPos = (long)(i*(nFileLength/nStartPos.length)); v5}X+'
} 6]cryf&b
for(int i=0;i<nEndPos.length-1;i++) U%<rn(xWXD
{ }j 5 a[L
nEndPos = nStartPos[i+1]; alMYk
} l~s7Ae
nEndPos[nEndPos.length-1] = nFileLength; Yf_6PGNzX
} ;r\(p|e
} Z4TL6]^R
R6;Phdh<>
b,H[I!. %
//启动子线程 I5ss0JSl/
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ={2!c0s
for(int i=0;i<nStartPos.length;i++) nwI3| &
{ B:TR2G9UT
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), e0,'+;*=g
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), h+~P"i}&\
nStartPos,nEndPos,i); Nil}js27
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); d;[u8t
fileSplitterFetch.start(); M5L{*>4|6
} |H}sYp
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 66&EBX}
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); >zvY\{WY
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", IV16d
nEndPos = " + nFileLength); Oft arD
// fileSplitterFetch[nPos.length-1].start(); Y&bMCI6U
Ue:z1p;g
.\Fss(Zn
//等待子线程结束 U%B(5cC
//int count = 0; b}!3;: iD
//是否结束while循环 Z [Xa%~5>5
boolean breakWhile = false; `NRH9l>B7
R@Y=o].2
MZv]s
while(!bStop) P@}P k
{ Et2JxbD
write_nPos(); shC;hR&;
Utility.sleep(500); :t$aN|>y
breakWhile = true; ihe(F7\U
8kL4~(hY
R,2=&+ e
for(int i=0;i<nStartPos.length;i++) 0>Z ;Ni
{ ]
f>]n
if(!fileSplitterFetch.bDownOver) \{\MxXW
{ $& ~;@*[
breakWhile = false; D87|q4
break; &-yGVx
} &a)eJF]:!
} q0mOG^
if(breakWhile) NW9n
break; ?8@>6IXn
u0)7i.!M
p0p4Xh1e
//count++; yoe}$f4
//if(count>4) imL_lw^?
// siteStop(); b;mSQ4+
} \uOdALZ
h[tix:
-<_$m6x"A
System.err.println("文件下载结束!"); a~LC+8|JW
} @DAF 6ygs
catch(Exception e){e.printStackTrace ();} <G8w[hs
} %GEJnJ
&NZfJs
t/o N>mQG
//获得文件长度 "VxWj}+]
public long getFileSize() ,{eUP0]
{ h&@R| N
int nFileLength = -1; |aToUi.Q%
try{ x<i}_@Sn_+
URL url = new URL(siteInfoBean.getSSiteURL()); {U!St@
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Z{NC9
httpConnection.setRequestProperty("User-Agent","NetFox"); VObrlOkp
j5$BK[p.
bF}V4"d,B3
int responseCode=httpConnection.getResponseCode(); `<" m%>
if(responseCode>=400) 9Mm!%Hu
{ yR~-k?7b
processErrorCode(responseCode); i7[uLdQ
return -2; //-2 represent access is error `BFIC7a
} ~:Uwg+]j
hPhZUL%
6&U+6gb
String sHeader; l7[7_iB&E
.3 pbuU
+?D6T!)
for(int i=1;;i++) qf)$$ qi
{ C&\5'[*
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); >XW*T5aUA
//Utility.log(in.readLine()); $K~LM8_CKy
sHeader=httpConnection.getHeaderFieldKey(i); oT95^y\9
if(sHeader!=null) E N^Uki`
{ RuW!*LI
if(sHeader.equals("Content-Length")) |dE
-^"_
{ >cmE
t
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9?T{}| ?
break; ^D67y%
} BfTcI)
} /nx'Z0&+X
else :7N3N
break; 8
(jUe
} wRNroQ
} =dP{ Gh
catch(IOException e){e.printStackTrace ();} c>bq%}
catch(Exception e){e.printStackTrace ();} 4IdT'
vm23U^VJ
O!1TthI
Utility.log(nFileLength); <msxHw
s$h]
G[x
PG5- ;i/
return nFileLength; 0pe3L
} +0z 7KO%^^
d?,M/$h
0\{BWNK
//保存下载信息(文件指针位置) OU DcY@x~
private void write_nPos() ^
?hA@{T/1
{ %%%fL;-y
try{ uv{P,]lK
output = new DataOutputStream(new FileOutputStream(tmpFile)); Pj#'}ru!
output.writeInt(nStartPos.length); {y
kYW%3s
for(int i=0;i<nStartPos.length;i++) XV>JD/K2
{ Y OyX[&oi
// output.writeLong(nPos); rPzQ8<
output.writeLong(fileSplitterFetch.nStartPos); |w}w.%
output.writeLong(fileSplitterFetch.nEndPos); +m\|e{G
} }peBR80tQ
output.close(); [BbutGvj
} 1MkI0OZE
catch(IOException e){e.printStackTrace ();} XhU@W}}
catch(Exception e){e.printStackTrace ();} T".]m7!
} Mc sTe|X
?0*8RK
9|'B9C
//读取保存的下载信息(文件指针位置) }71LLzG`/
private void read_nPos() /Poet%XvRx
{ (3vHY`9
try{ &7?R+ZGo
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); DsD zkwJE
int nCount = input.readInt(); y k161\
nStartPos = new long[nCount]; )(Iy<Y?#
nEndPos = new long[nCount]; Tm]nEl)_
for(int i=0;i<nStartPos.length;i++) ,0$)yZ3*3,
{ R/b4NGW@
nStartPos = input.readLong(); J a,d3K
nEndPos = input.readLong(); r~[vaQQ6L
} m,LG=s
input.close(); lEL78l.
} 01a-{&
catch(IOException e){e.printStackTrace ();} u8b2$D
catch(Exception e){e.printStackTrace ();} !,$i6gm
} 1nj(hg
`<\}FS`'
beY=g7|
private void processErrorCode(int nErrorCode) Ru!He,k7
{ @pV5}N[]
System.err.println("Error Code : " + nErrorCode); z(RL<N%
} ~K_Uq*dCE
<{(/E0~V/<
^o?S M^
//停止文件下载 X##1!
ad
public void siteStop() !SOrCMHx
{ eZhPu'id\s
bStop = true; k ^'f[|}
for(int i=0;i<nStartPos.length;i++) ?q2j3e[>
fileSplitterFetch.splitterStop(); oj.A,Fh
x90*yaw>h
:)f7A7 :;
} pfuW
} Lr;(xw\['
//负责部分文件的抓取 z~6y+
**FileSplitterFetch.java Lju7,/UD
*/ UQCo}vM
package NetFox; k?nQ?B
W
w-B^
[<
R
import java.io.*; u?ek|%Ok
import java.net.*; I&c ~8Dw
!4@G3Ae22
#4LFG\s
public class FileSplitterFetch extends Thread { ~Z/
^c,[:
}Y(]6$uS
$V>98M>j
String sURL; //File URL !H][LXB~H
long nStartPos; //File Snippet Start Position ^^` Jcd/
long nEndPos; //File Snippet End Position wJb#g0
int nThreadID; //Thread's ID 2Tav;LKX
boolean bDownOver = false; //Downing is over pVp:@0h
boolean bStop = false; //Stop identical `i~ Y Fr
FileAccessI fileAccessI = null; //File Access interface x LBQ
UUo;`rkT
Cm$1$?J
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException +#@"*yj3
{ .k{ j]{k
this.sURL = sURL; u#7+U\
this.nStartPos = nStart; Q~D`cc|]
this.nEndPos = nEnd; IHfzZHy
nThreadID = id; S&C1 TC
fileAccessI = new FileAccessI(sName,nStartPos);//定位 xZ5M/YSyG
} Z[!d*O%R_
Gnm4gF!BI
iL{M+Ic
public void run() o;"OSp
{ >Y 1{rSk
while(nStartPos < nEndPos && !bStop) K[\'"HyQ,X
{ -u!qrJ*Z
stl 1QO(h
c47")2/yO
try{ T Zir>5
URL url = new URL(sURL); %wV>0gQTf
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); }H4=HDO
httpConnection.setRequestProperty("User-Agent","NetFox"); 5y2?
f
String sProperty = "bytes="+nStartPos+"-"; aFiCZHohw
httpConnection.setRequestProperty("RANGE",sProperty); r9 y.i(j
Utility.log(sProperty); _zxLwU1(x
TfxwVPX
,''cNV
InputStream input = httpConnection.getInputStream(); jg
2qGC
//logResponseHead(httpConnection); ^ OJyN,A
t-u|U(n
=bh*[,-
byte[] b = new byte[1024]; ~H)4)r^
int nRead; $v.C0 x
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 9_ICNG%
{ M/PFPJ >`
nStartPos += fileAccessI.write(b,0,nRead); $DFv30 f
//if(nThreadID == 1) QlFZO4 P3|
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?8dVH2W.
} y<R=
PeX1wK%f
+eQe%U
Utility.log("Thread " + nThreadID + " is over!"); $m1<i?'m
bDownOver = true; YIt9M,5/Q
//nPos = fileAccessI.write (b,0,nRead); M
x5`yT7
} %HQ.|
catch(Exception e){e.printStackTrace ();} FFhtj(hVgc
} 1
"TVRb
} =6FUNvP#8
z><5R|Gf
o{v&.z
//打印回应的头信息
+1C3`0(
public void logResponseHead(HttpURLConnection con) wyx(FinIH
{ $VG*q
for(int i=1;;i++) <[aDo%,A
{ qpoV]#iW
String header=con.getHeaderFieldKey(i); %x;x_
if(header!=null) =M 6[URZ
//responseHeaders.put(header,httpConnection.getHeaderField(header));
r#PMy$7L
Utility.log(header+" : "+con.getHeaderField(header)); _eSdnHWx
else LVIAF0kX
break; "}WJd$
} o 6 {\Zzp
} Bsf7mcXz7z
F+UG'4%
W^,S6!
public void splitterStop() }*]B-\>
{ v1U?&C
bStop = true; )/ Ud^wi
} rr`;W}3
d|9b~_::V
PW(\4Q\
} 0oA{Jix
qM4c]YIaSl
S|V4[ssB
/* [./6At&|
**FileAccess.java }/dRU${!
*//文件访问(定位,写) ubsSa}$q
package NetFox; #BVtL :x@
import java.io.*; $aCd/&
3H\w2V
aIy*pmpD=
public class FileAccessI implements Serializable{ U=Y)V%
1[F3 Z
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 sRVIH A,
RandomAccessFile oSavedFile; C-eA8pYY/
long nPos; # M, 7
)"(] Lf's
ql{(Lf$
public FileAccessI() throws IOException Jo(`zuLJ
{ 0X8t>#uF
this("",0); Eh</? Qv\
} s>_V
A$0H
.F>
Kr'f- {
public FileAccessI(String sName,long nPos) throws IOException c'6g*%2k
{ 'XQ`g CF=
oSavedFile = new RandomAccessFile(sName,"rw"); 0Q,g7K<d
this.nPos = nPos; }uHrto3M
oSavedFile.seek(nPos); iF5'ygR-Z
} c:S] R"
W+wA_s2&D
qL6c`(0
public synchronized int write(byte[] b,int nStart,int nLen) "@@I!RwA
{ [97:4.
int n = -1; +[@z(N-h
try{ j| Wv7
oSavedFile.write(b,nStart,nLen); \?>Hu
v
n = nLen; @53k8
} 'X).y1'
catch(IOException e) 0<"k8
k@J
{ <tpmUA[]
e.printStackTrace (); Q'l^9Bz
} zepop19
vzzE-(\\e
~I/@i
return n; M}:=zcZ l
} +;BAV
exh/CK4;
|Z\R*b"
} #1c]PX
vr#+0:|
-&