/* jjJc1 p0
**SiteFileFetch.java p>2||
*/ <f7?PAd
package NetFox; <9Lv4`]GU5
import java.io.*; bRx2
c
import java.net.*; ?| D$#{^
}wvwZ`5t
hu bfK~
public class SiteFileFetch extends Thread { b=6MFPbg
SZCF3m&pz
LEYWH%y
SiteInfoBean siteInfoBean = null; //文件信息Bean %1Vu=zCAW
long[] nStartPos; //开始位置 v[0DE*p
long[] nEndPos; //结束位置 _<Hb(z
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Xjs21-t%
long nFileLength; //文件长度 +AE&GU
boolean bFirst = true; //是否第一次取文件 )2iM<-uB
boolean bStop = false; //停止标志 ygmv_YLjm
File tmpFile; //文件下载的临时信息 ^n\9AE3
DataOutputStream output; //输出到文件的输出流 $sU5=,
_fczE~O/
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1{SrHdD=
public SiteFileFetch(SiteInfoBean bean) throws IOException B'WCN&N
{ Ha46U6_'h
siteInfoBean = bean; tQNk=}VR7r
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Tns?mQ
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [W^6u7~
if(tmpFile.exists ()) o0,UXBx
{ C><<0VhU
bFirst = false; $=e&q
read_nPos(); u=p ;A1oy
} ]_^"|RJ
else aukk|/3Ih
{ w.4u=e >Z4
nStartPos = new long[bean.getNSplitter()]; />dB%*
nEndPos = new long[bean.getNSplitter()]; r1[E{Tpz
} RB S[*D
GM)\)\kNF
3::3r}g
-/(DPx
} !Iw{Y'
{]t\`fjrg
)GiFkG
public void run() p)?qJ2c|
{ C m,*bgX
//获得文件长度 ltCwns
//分割文件 %8}WX@SB
//实例FileSplitterFetch ua]\xBWx
//启动FileSplitterFetch线程 (SgEt
//等待子线程返回 \Dvl%:8
try{ /0B07B
if(bFirst) no~O R Q
{ 4kW30Ma
nFileLength = getFileSize(); wx]+*Lzz
if(nFileLength == -1) c,#~L7
{ J~_L4*Jw
System.err.println("File Length is not known!"); }m=tzHB*
} p56KS5duI.
else if(nFileLength == -2) )bB"12Z|8
{ g|&.v2 '
System.err.println("File is not access!"); J8sJ~FnUj
} l _kg3e4
else u4b3bH9U
{ LY@1@O2@
for(int i=0;i<nStartPos.length;i++) |'V<>v.v
{ IqvqvHxLX
nStartPos = (long)(i*(nFileLength/nStartPos.length)); LVR;&Z>j
} l>3M|js@/
for(int i=0;i<nEndPos.length-1;i++) E%wV
{ n9<roH
nEndPos = nStartPos[i+1]; lKh2LY=j
} VTy,43<
nEndPos[nEndPos.length-1] = nFileLength; _ 6+,R
} ?V&Ld$db
} F]K$u<U
ZYwBw:y}y
%5Q7 #xU
//启动子线程 f"5lOzj`C
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &y#\1K
for(int i=0;i<nStartPos.length;i++) >5Q^9 9V
{ (uuEjM$3%
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "VT{1(]t
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), OCbQB5k3
nStartPos,nEndPos,i); Vze!/ED
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); TnvHO_P,
fileSplitterFetch.start(); kbIY%\QSO
} JEK%yMj
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >\6jb&,%O
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); I,],?DQX2)
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 6i9Q,4~
nEndPos = " + nFileLength); j:rs+1bc
// fileSplitterFetch[nPos.length-1].start(); "W?l R4
x*,q
Rew
vxbH^b
//等待子线程结束 }<5\O*kX4
//int count = 0; b:}wR*Adc
//是否结束while循环 /I`cS%U
boolean breakWhile = false; ?YkO+?}+
sx)$=~o
KRnB[$3F1
while(!bStop) E>l#0Zw
{ 2R_opbw
write_nPos(); ^G'yaaLXR
Utility.sleep(500); haEZp6Z
breakWhile = true; ~,1-$#R
CO:m]oj
bBeFL~
for(int i=0;i<nStartPos.length;i++) I&'S2=s
{ K^]?@oHO
if(!fileSplitterFetch.bDownOver) ^-e3=&
{ ~WYE"(
breakWhile = false; 75hFyh;u
break; F?RCaj
} YobC'c\~9
} 0]:*v?
if(breakWhile) ;*>QG6Fh
break; 9:CVN@E
~
X]"P4 u
?vht~5'
//count++; ?j&~vy= T
//if(count>4) 1eE]4Z4Q
// siteStop(); JhMrm%
} 9AVK_
$.r}g\43P
7N} \1Di5
System.err.println("文件下载结束!"); q^jqLT&w
} 6S! lD=
catch(Exception e){e.printStackTrace ();} m5'__<
} 2kp|zX(
:uT
fhr
%4r!7X|O<
//获得文件长度 =XRgT1>e
public long getFileSize() .^9/ 0.g8t
{ XDrlJvrPL
int nFileLength = -1; )'K!)?&d
try{ d 40'3]/{
URL url = new URL(siteInfoBean.getSSiteURL()); vZ_DG}n11
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); W)$|Hm:H
httpConnection.setRequestProperty("User-Agent","NetFox"); 5x1%oC
cOZajC<G
9|G=KN)P:
int responseCode=httpConnection.getResponseCode(); U47k5s(J
if(responseCode>=400) %T ,\xZ
{ %`s9yRk9>E
processErrorCode(responseCode); ,h wf
return -2; //-2 represent access is error pxCGE[@`
} wEo-a< (
)K\k6HC.
6&OonYsP
String sHeader; +NzD/.gq
My6]k?;}(
x%:>Ol
for(int i=1;;i++) !cFE^VM_;
{ 0o"<^]
_|
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); @WDqP/4
//Utility.log(in.readLine()); vU\w3
sHeader=httpConnection.getHeaderFieldKey(i); AP?{N:+
if(sHeader!=null) F"@'(b
{ 0\_R|i_`>
if(sHeader.equals("Content-Length")) ~qLhZR\g^
{ VtPoc(o4]
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); kGBl)0pr`x
break; zOu$H[
} i*cE
} 0| DG\&?
else D)/XP
break; ]uj.uWD
} Tm~#wL
+r
} v-r[~
catch(IOException e){e.printStackTrace ();} ("P mB?20
catch(Exception e){e.printStackTrace ();} "'H7F,k'
k>z-Zg
"]\":T
Utility.log(nFileLength); whg4o|p
~RR_[t2Z
EH!EyNNb
return nFileLength; Med"dHo7
} ss*2TE7
*V@MAt
g9lg
//保存下载信息(文件指针位置) H{tOCYyD
private void write_nPos() T=f;n;/>
{ DRmh(T
try{ 7q{v9xKy
output = new DataOutputStream(new FileOutputStream(tmpFile)); @SQ*/sw (c
output.writeInt(nStartPos.length); ~cg+BAfu
for(int i=0;i<nStartPos.length;i++) W*/s4 N
{ _I70qz8
// output.writeLong(nPos); KxTYc
output.writeLong(fileSplitterFetch.nStartPos); _^2[(<Gmv
output.writeLong(fileSplitterFetch.nEndPos); $85o%siS'
} 3xCA\*
output.close(); 9jzLXym
} CyBM4qyH
catch(IOException e){e.printStackTrace ();} 23n8,} H,
catch(Exception e){e.printStackTrace ();} WCfe!P?g
} 9:Z~}yX
[Ey%uh
6*
%Ty
{1'o
//读取保存的下载信息(文件指针位置) /jL{JF>I
private void read_nPos() RVKaqJ0e<
{ ^%OH}Z `ly
try{ %Pvb>U(Xs
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); !\k#{
1[!
int nCount = input.readInt(); m{yNnJ3O
nStartPos = new long[nCount]; "y
,(9_#
nEndPos = new long[nCount]; vM3|Ti>a'
for(int i=0;i<nStartPos.length;i++) Ef*.}gcU
{ sFz4^Kn
nStartPos = input.readLong(); N n-6/]d#
nEndPos = input.readLong(); mBgx17K/-_
} Y X{
input.close(); [Oy2&C
} AFhG{G'W
catch(IOException e){e.printStackTrace ();} <n~g+ps
catch(Exception e){e.printStackTrace ();} 2mp>Mn~K^
} E~O>m8hF
7R`ZTfD
9kg>)ty@
private void processErrorCode(int nErrorCode) +5}T!r
{ @/2wmza%2
System.err.println("Error Code : " + nErrorCode); E#V-F-@2
} fD}]Mi:V
<.%8j\j(
j8A R#
//停止文件下载 68br
public void siteStop() {|wTZ
{ 9M~$W-5
bStop = true; \,#4+&4b
for(int i=0;i<nStartPos.length;i++) 7Hlh
(k
fileSplitterFetch.splitterStop(); .Fz6+m;Z
*M!YQ<7G^d
|/Q. "d
} 3LnyQ
} AA%g^PWpR
//负责部分文件的抓取 S@2Jj>3D?
**FileSplitterFetch.java xcRrI|?eC
*/ Jz8#88cY
package NetFox; tZBE& :l
UHl/AM>!
t:@A)ip
import java.io.*; 8uD%]k=#!
import java.net.*; <^c0bY1
`TR9GWU+B
"uERa(i
public class FileSplitterFetch extends Thread { (>lqp%G~
ej53O/hP
.0;k|&eBD
String sURL; //File URL cZF;f{t
long nStartPos; //File Snippet Start Position v&,VC~RN-J
long nEndPos; //File Snippet End Position 0$h$7'a
int nThreadID; //Thread's ID 6]A\8Ty
boolean bDownOver = false; //Downing is over l fhKZX
boolean bStop = false; //Stop identical ,ui'^8{gK
FileAccessI fileAccessI = null; //File Access interface WG=r? xE
Jj!tRZT
5:3$VWLa
<
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException krY.Cc]
{ WjxBNk'f
this.sURL = sURL; 8r|
this.nStartPos = nStart; :H:}t>X6Vo
this.nEndPos = nEnd; (=B7_jrl
nThreadID = id; ^
/eSby
fileAccessI = new FileAccessI(sName,nStartPos);//定位 5*'N Q010
} 6 FxndR;
KFG^vmrn
UdgI<a~`k6
public void run() Uy'ZL(2
{ n/Z =q?_
while(nStartPos < nEndPos && !bStop) 0~5}F^8[L
{ 1,D
^,
aL6 5t\2
%31K*i/]
try{ ebwoMG,B-
URL url = new URL(sURL); hUvH
t+d
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %pKs- n`
httpConnection.setRequestProperty("User-Agent","NetFox"); (&x\,19U$
String sProperty = "bytes="+nStartPos+"-"; J3E:r_+
httpConnection.setRequestProperty("RANGE",sProperty); u+FftgA
Utility.log(sProperty); J-?(sjIX
j'b4Sbs-f
-+Ji~;b
InputStream input = httpConnection.getInputStream(); 5.UgJ/
//logResponseHead(httpConnection); GB Un" _J
?Og ;W9i
NGGd6V%'-
byte[] b = new byte[1024]; !Bbwl-e`
int nRead; :iiTz$yk
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) bvvx(?!
{ 2;7GgO~
nStartPos += fileAccessI.write(b,0,nRead); S(s~4(o>8
//if(nThreadID == 1) wWswuhq<
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); KAEpFobYo
} 9:5NX3"p
UZ0O
j5B.
@D{[Hj`<
Utility.log("Thread " + nThreadID + " is over!"); !-Q!/?
bDownOver = true; {D.0_=y~2
//nPos = fileAccessI.write (b,0,nRead); 45JLx?rN_
} +@v} (
catch(Exception e){e.printStackTrace ();} QCnVZ" !(
} Y0'^S<ox
} #Jb$AA!z
: |(B[
+& Qqu`)?F
//打印回应的头信息 @2O\M ,g5
public void logResponseHead(HttpURLConnection con) (Gsg+c
{ K?eo)|4)DB
for(int i=1;;i++) g
0=t9J
{ v65r@)\`
String header=con.getHeaderFieldKey(i); ;:1mv
if(header!=null) OPh@H.)^
//responseHeaders.put(header,httpConnection.getHeaderField(header)); $$>,2^qr&L
Utility.log(header+" : "+con.getHeaderField(header)); 5<
nK.i,
else 2Vr'AEIQ
break; 2M`Ni&v
} ^ZBkt7
} "FD~XSRL
Ctx K{:
j
KK48S
public void splitterStop() ^jC0S[csw2
{ x&p=vUuukP
bStop = true; Jrl
xa3 [
} >r Glj
y['icGU6
3".W
} +fmZ&9hFNJ
'1*MiFxKq
Dne&YVF9V
/* rbWFq|(_
**FileAccess.java !qq@F%tv
*//文件访问(定位,写) H[oi? {L
package NetFox; ?RyvM_(N6
import java.io.*; U:(t9NX
b
/iy/2x28>
]t<%>Z$
public class FileAccessI implements Serializable{ IRY2H#:$
'?4[w]0J<
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 O#k+.LU
RandomAccessFile oSavedFile; :oQaN[3>_
long nPos; G_RK3E[FK
{QJ`.6Kt
%J'_c|EQM
public FileAccessI() throws IOException 3e:y?hpeL
{ -z94>}Z=
this("",0); O%{>Zo_<