/* mnH1-}oL
**SiteFileFetch.java KvEZbf3f
*/ wQU-r|
package NetFox; ,]=Qgn
import java.io.*; ;{rl
Y>
import java.net.*; 9-?kamA
u"zQh|
e0<L^|S
public class SiteFileFetch extends Thread { 9R|B 5.
"HbrYYRb'
Mp^U)S+
SiteInfoBean siteInfoBean = null; //文件信息Bean "Oy&6rrr
long[] nStartPos; //开始位置 [mQ*];GA
long[] nEndPos; //结束位置 _ 3>|1RB
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Jm}zit:o
long nFileLength; //文件长度 :6frx=<
boolean bFirst = true; //是否第一次取文件 kN$L8U8f
boolean bStop = false; //停止标志 sJYs{Wm
File tmpFile; //文件下载的临时信息 1H,hw
DataOutputStream output; //输出到文件的输出流 3WF6bJN
E%>){Y)
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) +yu^Z*_
public SiteFileFetch(SiteInfoBean bean) throws IOException ;AgXl%Q
{ wB W]w
siteInfoBean = bean; UjQi9ELoJ
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 5P
< F
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); tL@m5M%:N2
if(tmpFile.exists ()) atWAhN
{ '^.}5be&
bFirst = false; Z= P=oldH
read_nPos(); [KjL`
} D`uOBEX
else ;/-#oW@gQ
{ `=f1rXhI+1
nStartPos = new long[bean.getNSplitter()]; iG;GAw|E
nEndPos = new long[bean.getNSplitter()]; o*WI*Fb'
} ^aO\WKkA
jP|(y]!
O}_Z"y
(s.S
n(E
} h|Uy!?l
=2[U4<d!R
6~v|pA jY
public void run() .EUOKPK4W
{ y|@=j~}Zq
//获得文件长度 y:8*!}fR
//分割文件 Zcn,_b7
//实例FileSplitterFetch Px))O&w{
//启动FileSplitterFetch线程 P9D'L{yS/x
//等待子线程返回 nY<hfqof
try{ _*Z2</5
if(bFirst)
!(<Yc5
{ S?_ ;$Cn
nFileLength = getFileSize(); ]gQ4qu5
if(nFileLength == -1) Tfl4MDZb
{ *xOrt)D=
System.err.println("File Length is not known!"); GlVD!0
} -*EK-j
else if(nFileLength == -2) KwiTnP!Dca
{ KD7RI3'?
System.err.println("File is not access!"); cTeEND)
} It@ak6u?
else O2Mo ~}
{ bu#}`/\_
for(int i=0;i<nStartPos.length;i++) ZrFC#wJb
{ 8?r
,ylUj
nStartPos = (long)(i*(nFileLength/nStartPos.length)); 81|Xg5g)b
} BZE~k?*
for(int i=0;i<nEndPos.length-1;i++) /IC7q?avQN
{ l&4TfzkY
nEndPos = nStartPos[i+1]; rE
bC_<
} @M-+-6+
nEndPos[nEndPos.length-1] = nFileLength; 4yH=dl4=44
} FPu"/4v&
} =,~h]_\_
:,=no>mMx
v&B*InR?+
//启动子线程 /0mbG!Ac
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )vK
%LmP
for(int i=0;i<nStartPos.length;i++) B&`hvR
{ PQRh5km
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ( {H5k''
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \gL
H_$}
nStartPos,nEndPos,i); 3~4e\xL
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); & ;+u.X
fileSplitterFetch.start(); 5B?>.4R
} wvm`JOP:A
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |Y!#`
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); "S43:VH
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", KFd"JtPg
nEndPos = " + nFileLength); h&Ehp
// fileSplitterFetch[nPos.length-1].start(); Q-%Q7n'c
^Q]*CU+C
s45Y8!c
//等待子线程结束 Yo
c N@s
//int count = 0; #s1O(rLRl
//是否结束while循环 vvLm9Tw
boolean breakWhile = false; "|<\\HR
_gB`;zo
lu(<(t,Lbs
while(!bStop) V,($I'&/
{ +xwz.:::
write_nPos(); p
IXBJk
Utility.sleep(500); 5yO6szg
breakWhile = true; j3rBEQ,R
o)7gKWjujP
OedL?4
for(int i=0;i<nStartPos.length;i++) tH<v1LEZN
{ ZgLO[Bj
if(!fileSplitterFetch.bDownOver) E{d Mdz
{ oQ 5g0(J~
breakWhile = false; iZQwo3"8r
break; ](vshgp2
} l/_3H\iM
} !=#E/il,
if(breakWhile) 3C8'0DB
break; rO/mK$
>'/G:\M>A
y5.Z <Y
//count++; G|yX9C]R
//if(count>4) Mu18s}
// siteStop(); 3mgFouX2x,
} vt[4"eU
8h~v%aZ1
uRKCvsi sX
System.err.println("文件下载结束!"); A8hj"V47
} sf]y\_zU
catch(Exception e){e.printStackTrace ();} #"6(Q2|
l
} EW1L!3K
&3>ki0L
-3X#$k8
//获得文件长度 )]!Ps` ,u
public long getFileSize() rB}UFS)
{ [syuoJ
int nFileLength = -1; I~MBR2$9
try{ yE-&TW_q:>
URL url = new URL(siteInfoBean.getSSiteURL()); @dcT8 YC
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 9tXLC|yl?
httpConnection.setRequestProperty("User-Agent","NetFox"); *"0Yr`)S
,qpn4`zE~
,-t3gc1~X
int responseCode=httpConnection.getResponseCode(); '!Vn
if(responseCode>=400) *~M=2Fj;i
{ <FMW%4
processErrorCode(responseCode); B} gi /
return -2; //-2 represent access is error nbw&+dcJ8
} x$AF0xFO
qJFBdJU (1
"tUXYY
String sHeader; 1^R @X
tsU.c"^n
//:.k#}~B
for(int i=1;;i++) h/`OG>./
{ Oe^3YOR#j{
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,>2ijk#
//Utility.log(in.readLine()); ?b:J6(-
sHeader=httpConnection.getHeaderFieldKey(i); {Zjnf6d]
if(sHeader!=null) |v}"UW(y
{ tz&=v,_jc
if(sHeader.equals("Content-Length")) \^?BC;s^C
{ }?#<)|_5
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); \rcbt6H
break; 6J6MR<5'
} {LY$
} :HRJ49a
else XY1NTo.=
break; on(F8%]zE
} z}s0D]$+x
} ?.IT!M}DR
catch(IOException e){e.printStackTrace ();} y)|Q~8r
catch(Exception e){e.printStackTrace ();} E*7B5
4CS9vv)9R
`l1{BU
Utility.log(nFileLength); ]}8<h5h)
._-^58[
2<yi8O\
return nFileLength; _C&2-tnp
} -f z
|
[sTr#9Z
5P
-IZ8~$
//保存下载信息(文件指针位置) U{RW=sYB~9
private void write_nPos() S,lJ&Rsu
{ 3otia;&B
try{ #DwTm~V0"
output = new DataOutputStream(new FileOutputStream(tmpFile)); >yg mE`g
output.writeInt(nStartPos.length); 9cWl/7;zXO
for(int i=0;i<nStartPos.length;i++) WcPDPu~/
{ ,JN2q]QPP
// output.writeLong(nPos); fg%I?ou
output.writeLong(fileSplitterFetch.nStartPos); kG
&.|
output.writeLong(fileSplitterFetch.nEndPos); kW4/0PD
} U'UV=:/-
output.close(); }/[tB
} G7pj.rQ
catch(IOException e){e.printStackTrace ();} 8}\VlH]
catch(Exception e){e.printStackTrace ();} .Frc:Y{
} R?Ki~'k=
B+iVK(j'[v
26yv w
//读取保存的下载信息(文件指针位置) '73dsOTIT
private void read_nPos() MJV)|
2C
{ Iu jly f
try{ ?a7PxD.
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); jB:$+k|~.
int nCount = input.readInt(); *&+e2itmp
nStartPos = new long[nCount]; X7?p$!M6;B
nEndPos = new long[nCount]; 9loWh5_1Z
for(int i=0;i<nStartPos.length;i++) |zKe*H/
{ kUmrJBh$
nStartPos = input.readLong(); \^iJv~d
nEndPos = input.readLong(); rm;'/l8Y-E
} VThcG(
NF
input.close(); cTHS Pr?<
} xpx=t71Hq
catch(IOException e){e.printStackTrace ();} y!6B Gz
catch(Exception e){e.printStackTrace ();} ANc)igo
} x:88E78
7;#9\a:R?
{xW?v;
private void processErrorCode(int nErrorCode) $}jp=?,t
{ 7$<.I#x
System.err.println("Error Code : " + nErrorCode); CuR\JKdRo
} F.HD;C-;(
v98=#k!F
5:Pp62
//停止文件下载 xKWqDt
public void siteStop() /WRS6n
{ Yewn
bStop = true; Al09R,I;
for(int i=0;i<nStartPos.length;i++) wV+ W(
fileSplitterFetch.splitterStop(); }tF/ca:XPQ
@ H=
d8$
]iRE^o6
} h=.|!u
} wdS^`nz|
//负责部分文件的抓取 NKvBNf|D
**FileSplitterFetch.java K}tl,MMU
*/ a*$to/^r
package NetFox; MIo<sJuv
P,k~! F^L
K]Q#B|_T
import java.io.*; 8i!AJF9IQ}
import java.net.*; :'91qA%Wr
J0*hJ-/u
S_/9eI~X
public class FileSplitterFetch extends Thread { .+MJ' bW
_Db=I3.HJ
y >r7(qg
String sURL; //File URL K*&M:u6E
long nStartPos; //File Snippet Start Position S<rdPS*P
long nEndPos; //File Snippet End Position au@ LQxKQ
int nThreadID; //Thread's ID ,;)Y1q}Q
boolean bDownOver = false; //Downing is over }l~|c{WH`
boolean bStop = false; //Stop identical L^i=RGx
FileAccessI fileAccessI = null; //File Access interface Nz_c]3_j
M$~3`n*^
$m,gQV~4
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException cjAKc|N J
{ <`k\kZM
this.sURL = sURL; Ni#!C:q
this.nStartPos = nStart; {e\Pd!D?|
this.nEndPos = nEnd; lPx4=O
nThreadID = id; /ts=DxCC;
fileAccessI = new FileAccessI(sName,nStartPos);//定位 11[[H kX@
} 7zXFQ|TP
v#0F1a?]D
8^\}\@
public void run() {STOWuY
{ 4e~^G
while(nStartPos < nEndPos && !bStop) u.sF/T=6f
{ R*a5bKr
d9>*a$x;/
#"-?+F=rk
try{ 5Ds/^fA
URL url = new URL(sURL); 0D/u`-
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); (|)`~z
httpConnection.setRequestProperty("User-Agent","NetFox"); c[\ :^w^I6
String sProperty = "bytes="+nStartPos+"-"; 4YDK`:4I~
httpConnection.setRequestProperty("RANGE",sProperty); ~XN--4%Q
Utility.log(sProperty); =}>wxO
uPKq<hBI
<_$]!Z6UR
InputStream input = httpConnection.getInputStream(); ?j;e/r.
//logResponseHead(httpConnection); (MhC83|?
&IsQgS7R
=M'M/vKD
byte[] b = new byte[1024]; PLU8:H@X
int nRead; +^ a9i5
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) bP\0S@1YL
{ QA>(}u\+
nStartPos += fileAccessI.write(b,0,nRead); DX GClH
//if(nThreadID == 1) VN[C%C
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 59mNb:<
} 5OeTOI()&5
)]WWx-Uf'
`Fa49B|`D
Utility.log("Thread " + nThreadID + " is over!"); gwhd) .*
bDownOver = true; 1{l18B`
//nPos = fileAccessI.write (b,0,nRead); cKuU#&FaV
} kR$>G2$!
catch(Exception e){e.printStackTrace ();} Wt5x*p-!C
} OLh`R]Sd
} |$"2R3
nX4R
]T|9>o!
//打印回应的头信息 Xou1X$$z
public void logResponseHead(HttpURLConnection con) [p[nK=&r
{ j(^ot001%v
for(int i=1;;i++) (Cjnf
a 2
{ ^7MhnA
String header=con.getHeaderFieldKey(i); &7Frg`B&:
if(header!=null) AzAD76iNv
//responseHeaders.put(header,httpConnection.getHeaderField(header)); \$:KfN>WY
Utility.log(header+" : "+con.getHeaderField(header)); F x,08
else ^2f'I iE
break; HDQhXw!!hc
} I@Zd<