/* '<>pz<c
**SiteFileFetch.java UR1U; k
*/ 7AV !v`
package NetFox; RA>xol~xy
import java.io.*; T1M4@j
import java.net.*; opte)=]J
}j+ZF'#
7$Bq.Lc#z
public class SiteFileFetch extends Thread { <3O>
mJ#u] tiL
_;v4]MU
SiteInfoBean siteInfoBean = null; //文件信息Bean k/j]*~"
long[] nStartPos; //开始位置 UXDd8OJL
long[] nEndPos; //结束位置 zK k;&y|{
FileSplitterFetch[] fileSplitterFetch; //子线程对象 T.`E DluG
long nFileLength; //文件长度 DFVaZN?~
boolean bFirst = true; //是否第一次取文件 u~bk~3.I
boolean bStop = false; //停止标志 $ze%!C
File tmpFile; //文件下载的临时信息 f lR6^6E
DataOutputStream output; //输出到文件的输出流 B r`Xw^S
XcR2]\
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) A%k@75V@
public SiteFileFetch(SiteInfoBean bean) throws IOException zy
{ $FNj>1
siteInfoBean = bean; 8}XtVF;
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Z8z.Xn
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Wf-i)oc4I
if(tmpFile.exists ()) 9K@`n:Rw
{ ;&s`g
bFirst = false; ?E^~z-
read_nPos(); pzg|?U
} ,gUSW
else i`z1if6O
{ ;v^tUyhCb
nStartPos = new long[bean.getNSplitter()]; i!*w'[G->Y
nEndPos = new long[bean.getNSplitter()]; q}*(rR9/Br
} jdK~]eld=
CJz2.yd
=!GUQLS{
K;k_MA310
} /$|C s
AT<K>&)
M`q >i B
public void run() z4HIDb
{ eY-W5TgU
//获得文件长度 Xjw>Qws
//分割文件 d/v{I
//实例FileSplitterFetch SGXXv
//启动FileSplitterFetch线程 f<=<:+
//等待子线程返回 S*Qip,u
try{ A0m
if(bFirst) :"5i/Cx
{ n!2"pRIi
nFileLength = getFileSize(); 3%bCv_6B
if(nFileLength == -1) )M<"YI)g
{ -+Axa[,5=
System.err.println("File Length is not known!"); g
j8rrd|
} ({v$!AAv
else if(nFileLength == -2) E/v.+m
{ ai)S:2
System.err.println("File is not access!"); "9'~6b
} uUB,OmLN
else B8F.}M-!
{ )a
AKO`
for(int i=0;i<nStartPos.length;i++) ~Z9Eb|B
{ \T`InBbf
nStartPos = (long)(i*(nFileLength/nStartPos.length)); cfBq/2I
} ^I4'7]n-
for(int i=0;i<nEndPos.length-1;i++) A'vQtlvKA
{ Jz&a9
nEndPos = nStartPos[i+1]; Cc/h|4
} ,m;S-Im_Xr
nEndPos[nEndPos.length-1] = nFileLength; Jr$,w7tQn@
} PIR#M('
} VG0Ty;bV
O-J;iX }
GvSSi'q~B
//启动子线程 <o@&I "
o
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ajC'C!"^Ty
for(int i=0;i<nStartPos.length;i++) D99g}
{ YT'G#U1x~
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gqV66xmJ3
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), H=Scrvfx
nStartPos,nEndPos,i); UF0W%Z
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6_]-&&Nr
fileSplitterFetch.start(); 4Vl_vTz{i
} eG&\b-%
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), d3-F?i
5d
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); *`2.WF@E)
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", =lT~
nEndPos = " + nFileLength); HK&Ul=^VN|
// fileSplitterFetch[nPos.length-1].start(); .B?6
l/1u>'
GKT2x '(e
//等待子线程结束 Fa<>2KkOr
//int count = 0; W!vN(1:(
//是否结束while循环 wNo2$>*
boolean breakWhile = false; uu ahR
jr[(g:L
5&?[Vt
while(!bStop) [Jv0^"]
{ "yaz!?O>
write_nPos(); OAJGwm
Utility.sleep(500); rQmDpoy =
breakWhile = true; Y-!~x0-H
KYE)#<V}@
1 aWzd[i
for(int i=0;i<nStartPos.length;i++) $J6 Pv
{ PD #9Z=Hj
if(!fileSplitterFetch.bDownOver) Dl=9<:6FW
{ =og>& K
breakWhile = false; KaVNRS
break; DJ_[{WAV
} 9
5bi
W
} b-?wJSf|
if(breakWhile) eS#kDa/ %
break; $HgBzZ7A2
x}\x3U
O[}{$NXw
//count++; {1?94rz
//if(count>4) U*sjv6*T
// siteStop(); w`BY>Xft0
} K[wny0 (
eTg8I/)%B
MWdev.m:Z
System.err.println("文件下载结束!"); L& = a(
} }9:(l
catch(Exception e){e.printStackTrace ();} o;'E("!<Z
} S]!s)q-- z
(=A61]yB
grD[7;1~:)
//获得文件长度 ga?:k,xv
public long getFileSize() f(M$m,d
{ l5h+:^#M5c
int nFileLength = -1; X,5}i5'!
try{ Z2n
Jw
URL url = new URL(siteInfoBean.getSSiteURL()); k+9*7y8w
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /q|r!+
httpConnection.setRequestProperty("User-Agent","NetFox"); ` wI$
MzEeDN
F}1h
int responseCode=httpConnection.getResponseCode(); k1lo{jw`
if(responseCode>=400) 5Zf^co u
{ :1*q}R
processErrorCode(responseCode); 5D]3I=kj
return -2; //-2 represent access is error ak,KHA6u
} ( p(/
yMG(FAyu
z*V 8l*
String sHeader; gB
_/(
1JQ5bB"
uzoI*aqk-s
for(int i=1;;i++) J.EBt3
{ 4nsc`Hu
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ]ilQq~X
//Utility.log(in.readLine()); ^fiJxU
sHeader=httpConnection.getHeaderFieldKey(i); (rmOv\hG9V
if(sHeader!=null) V0)bPcS/
{ "Jahc.I
if(sHeader.equals("Content-Length")) ,NO2{Ha$
{ qt(+X
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Hs:0j$
break; 1d$qr`
} ?"F9~vx&G
} !dQmg'_V
else
=oE(ur
break; N#``(a
} noNJ+0S
} reQr=OAez
catch(IOException e){e.printStackTrace ();} sYEh>%mo^C
catch(Exception e){e.printStackTrace ();} 8Y]% S9.
eA{nwtN
^4b;rLfk@
Utility.log(nFileLength); Iuyq!R4:7
ZUyS+60
m?<^b_a}
return nFileLength; d*YVk{s7V
} ')Q
<ni_78
c;?J
//保存下载信息(文件指针位置) v9\U2j
private void write_nPos() Ucx"\/"
{ 9 NGKh3V
try{ U{\9mt7b!
output = new DataOutputStream(new FileOutputStream(tmpFile)); r>e1IG
output.writeInt(nStartPos.length); $7QGi|W*k
for(int i=0;i<nStartPos.length;i++) q+znb'i-x
{ 8(Cs<C!
// output.writeLong(nPos); /[=Yv!
output.writeLong(fileSplitterFetch.nStartPos); .@Lktc
output.writeLong(fileSplitterFetch.nEndPos); uTdx`>M,O
} yhkKakg,)
output.close(); o;9 G{Xj3@
} _/czH<
catch(IOException e){e.printStackTrace ();} sYq:2Wn>8Q
catch(Exception e){e.printStackTrace ();} yV~TfTJ
} A`--*$ 8\
+CVB[r#hu
Dm@h'*
//读取保存的下载信息(文件指针位置) Z0/$XS9|h;
private void read_nPos() CnpQdI
{ fsl
ZJE
try{ PNo9.-@G
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ^e]O-,UBk
int nCount = input.readInt(); qeW.~B!B
nStartPos = new long[nCount]; EI9;J-c
nEndPos = new long[nCount]; Pn,>eD*g
for(int i=0;i<nStartPos.length;i++) hj=qWGRgI
{ f\rE{%
nStartPos = input.readLong(); ;reBJk
nEndPos = input.readLong(); k:&vW21E
} soRYM
input.close(); n$lVmQ6
} z~-(nyaBS
catch(IOException e){e.printStackTrace ();} cL<,]%SkE
catch(Exception e){e.printStackTrace ();} X
}`o9]y
} xnC:?d
sf0\#Q
VKtlAfXy~
private void processErrorCode(int nErrorCode) b^STegz
{ YQ@2p?4m
System.err.println("Error Code : " + nErrorCode); h<Ct[46,S
} ? 'qyI^m@
v, CWE
3RX9LJGX
//停止文件下载 S0Ur{!9\#^
public void siteStop() B^!-%_q
{ -e_|^T"
bStop = true; QH,Fw$1
for(int i=0;i<nStartPos.length;i++) x=Aq5*A0
fileSplitterFetch.splitterStop(); Kx?.g#>U;
,1g_{dMx
2z.~K&+x
} k*u6'IKi.4
} \#PZZH%
//负责部分文件的抓取 YV _ 7 .+A
**FileSplitterFetch.java &"?99E>
*/ =it @U/
package NetFox; l1#.rg
qqJghV$Oj
M}j[{wW3
import java.io.*; JljCI@
import java.net.*; 2">de/jS
`rXb:P7m{j
t 9t
'9
public class FileSplitterFetch extends Thread { :.tL~%
q
Qcks:|5
Y]_$+Si:NK
String sURL; //File URL |g>Q3E
long nStartPos; //File Snippet Start Position )+"5($~
long nEndPos; //File Snippet End Position n=PfV3B
int nThreadID; //Thread's ID u(fZ^
boolean bDownOver = false; //Downing is over u|Oc+qA(
boolean bStop = false; //Stop identical C(9"59>{]y
FileAccessI fileAccessI = null; //File Access interface P^# 4m
qcouZO
%Oo
f/q
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException D)bL;h
{ xFekSH7[F
this.sURL = sURL; 6O/c%1VHA3
this.nStartPos = nStart; )Fp$
*]|
this.nEndPos = nEnd; S8B?uU
nThreadID = id; ?E_;[(Mcr
fileAccessI = new FileAccessI(sName,nStartPos);//定位 nbB*d@"
} "G-h8IN^O
kxN
O9w
7AS_Aw1L
public void run() 98)C
7N'
{ MRw4?HqB
while(nStartPos < nEndPos && !bStop) ?:M4GY"gV
{ :h |]j[2p
|V4<eF-0S
$.t>* Bq
try{ p!~1~q6
URL url = new URL(sURL); ZDAW>H<
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ).IyjHY
httpConnection.setRequestProperty("User-Agent","NetFox"); vBJxhK-
String sProperty = "bytes="+nStartPos+"-"; 8MI8~
httpConnection.setRequestProperty("RANGE",sProperty); uO-|?{29
Utility.log(sProperty); c_CVZR?
g~b$WV%
Bu&9J(J1
InputStream input = httpConnection.getInputStream(); $=Ns7Sbup
//logResponseHead(httpConnection); @tPr\F
c{dabzLy
;BqCjS%`N
byte[] b = new byte[1024]; =E>P,"D
int nRead; zfE8=d8U
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >MKj~Ud
{ k0O5c[j
nStartPos += fileAccessI.write(b,0,nRead); ^-Ygh[x
//if(nThreadID == 1) _yUYEq<`
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); S 6_:\Q
} *Ti"8^`6
]j>`BK>FE
XXhN;-p
Utility.log("Thread " + nThreadID + " is over!"); W8$0y2
bDownOver = true; 122s7A
//nPos = fileAccessI.write (b,0,nRead); JBLUX,
} <&3aP}
catch(Exception e){e.printStackTrace ();} ez ! W0
} ^H7xFd|>
} -|^)8
GA$fueiQNs
a;^lOU|L{
//打印回应的头信息 i\l}M]Z#
public void logResponseHead(HttpURLConnection con) <G|i5/|7
{ HzKY2F(,
for(int i=1;;i++) :fwt PvLo
{ zeuj
String header=con.getHeaderFieldKey(i); K6
>\4'q
if(header!=null) 0}qlZFB
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 09anQHa
Utility.log(header+" : "+con.getHeaderField(header)); \lm]G7h
else @tY]=pqn_
break; 'fGKRd|)
} UOf\pG
} 7n.Oem
)gSqO{Z
!`RMXUV
public void splitterStop() V" 8 G-dK
{ Eyjsbj8
bStop = true; nD XEm6|e
} qbeUc5`1
W+63B8)4
p%&$%yz$
} {+7FBdxVB
}.&;NgZS
(AtyM?*
/* M-@X&bm,S
**FileAccess.java N)
_24
*//文件访问(定位,写) |%F,n2
package NetFox; ]uypi#[
import java.io.*; pvUV5^B(M
.,p=e$x]
;s{'cN[.
public class FileAccessI implements Serializable{ ZK'46lh
prN+{N8YC
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Ikf[K%NKn
RandomAccessFile oSavedFile; w-#
f^#
long nPos; L;$>SLl,
.kg 3>*
*j&)=8Y|
public FileAccessI() throws IOException ^}p##7t[
{ Z:7eroZP
this("",0); B+U:=591
} WEe7\bWF
4F
G0'J&hw
o.A:29KoU
public FileAccessI(String sName,long nPos) throws IOException [bP^RY:
{ eBnx$
oSavedFile = new RandomAccessFile(sName,"rw"); tx>7?e8E
this.nPos = nPos; E5)0YYjHZ
oSavedFile.seek(nPos); >FwK_Zd'
} |r Aot2
zA>X+JH>iw
!|xB>d
q?
public synchronized int write(byte[] b,int nStart,int nLen) t~j6w sx;
{ \q1tT!]
int n = -1; {~ F|"v
try{ HrvyI)4{
oSavedFile.write(b,nStart,nLen); }URdoTOvb
n = nLen; EG3,TuDH8
} Rh|9F yN
catch(IOException e) -Q@f),
{ %eg +.
e.printStackTrace (); S\8v)|Pr
} O8$~dzf,2
|*NZ^6`@
.6C/,rQ?c
return n; vJ65F6=G
} }-Mg&~e`
{+WY,%e
Mww ^
} M@.S Q@E
-9t"$)&
]5f;Kz)
/* :,JaOn'
**SiteInfoBean.java r9_ ON|
*/ H
u;"TG
package NetFox; 5U475&
Deh3Dtg/k
kPs?
public class SiteInfoBean { B~KxUp
z.cDbkf}
Yn~fnI{
private String sSiteURL; //Site's URL gA(npsUHI
private String sFilePath; //Saved File's Path 3E|||3rf
private String sFileName; //Saved File's Name
]LC4rS
private int nSplitter; //Count of Splited Downloading File 9BtGzI\
2 L4[~>
DPzW,aIgv
public SiteInfoBean() 7_1 Iadb
{//nSplitter的缺省值为5 ZxnPSA@%
//default value of nSplitter is 5 7y|U!r"Y
this("","","",5); .A< HM}
} ['}|#3*w
2O=$[b3
dA hcA.
public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) VAL?
Z
{ L[2qCxB'^
sSiteURL= sURL; CqnHh@]nu
sFilePath = sPath; / 3N2?zS{
sFileName = sName; k={D!4kKz
this.nSplitter = nSpiltter; U7x
7p.8{zQ*
#,#_"
} 'r!!W0-K
e` 4mrBtz|
=T[P
public String getSSiteURL() XS&Pc
{ {A0F/#M]
return sSiteURL; fxcE1=a
} _;PQt" ]
$Lstq_x+
1Gr^,Ry
public void setSSiteURL(String value) ompr})c
{ m-O*t$6
sSiteURL = value; F7=9> ,
} D=a*Xu2zq
)W\)kDh!
O<s7VHj
public String getSFilePath() nr]=O`Mvh
{ Hj
>fg2/
return sFilePath; i<Ms2^
} [s^pP2
gaXo)o S
|2^mCL.r
public void setSFilePath(String value) a^&"gGg
{ OG<*&V
sFilePath = value; aZ~e;}w.Zq
} c_qox
X{#^O/
ph6/+[:
public String getSFileName() l^R:W#*+U
{ my sXgS&