/* L\V`ou
**SiteFileFetch.java N|3#pHm@
*/ ^]Z@H/]H
package NetFox; KLG29G
import java.io.*; @uanej0q7
import java.net.*; |*Oi:)qt
p7HLSB2Rp
U+C^"[B
public class SiteFileFetch extends Thread { DO( 3hIj
:6/$/`I0W
!Uv>>MCr
SiteInfoBean siteInfoBean = null; //文件信息Bean l]gW_wUQd
long[] nStartPos; //开始位置 q([{WZ:6Oq
long[] nEndPos; //结束位置 =^ \?{oV
FileSplitterFetch[] fileSplitterFetch; //子线程对象 %jHe_8=o
long nFileLength; //文件长度 B{p74
>
boolean bFirst = true; //是否第一次取文件 zg$ag4%Qgg
boolean bStop = false; //停止标志 #Tt*NU
File tmpFile; //文件下载的临时信息 ) TRUx
DataOutputStream output; //输出到文件的输出流 O%haaL\
&gUa^5'#
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) mkrVeBp
public SiteFileFetch(SiteInfoBean bean) throws IOException 7p1B"%
{ z 7+>G/o
siteInfoBean = bean; 4YR{
*
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Uv652DC
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); IW-|"5?9'
if(tmpFile.exists ()) A;dD'Kgl
{ 2+Oz$9`.
bFirst = false; 9hh~u
-8L
read_nPos(); n{&;@mgI
} tU *`X(;
else b=U3&CV9
{ p#_5w
nStartPos = new long[bean.getNSplitter()]; *2rc Y
nEndPos = new long[bean.getNSplitter()]; tGzp=PyA
} ayQeT
_O;4>
CGkx_E]
B^/k`h6J
} o\; hF3
\9uK^oS
uPjp5;V
public void run() `uZMln @
{ f1;@a>X
//获得文件长度 FCWk8/
//分割文件 pjs4FZ`Pd;
//实例FileSplitterFetch ?%Ww3cU+J
//启动FileSplitterFetch线程 e8#83|h
//等待子线程返回 <XtE|LG
try{ (E,Ibz2G:e
if(bFirst) rs( e
{ 7[UD;&\k
nFileLength = getFileSize(); 7(a1@V H
if(nFileLength == -1) WW>m`RU`
{ Tj{3#?]Ho
System.err.println("File Length is not known!"); h+A+>kC5
} t\TxK7i
else if(nFileLength == -2) El: @l%
{ &Yc'X+'4
System.err.println("File is not access!"); EU04U
} #TC}paIpj
else y)a)VvU":
{ =8%*Rrj^
for(int i=0;i<nStartPos.length;i++) 1N:~5S}s>
{ i]L=M
5^C
nStartPos = (long)(i*(nFileLength/nStartPos.length)); rHk,OC
} WiZTE(NM`
for(int i=0;i<nEndPos.length-1;i++) E@n~ @|10
{ lI+^}-<
nEndPos = nStartPos[i+1]; 8n-Xt7z
} IV1Y+Z )
nEndPos[nEndPos.length-1] = nFileLength; 8S8UV(K0
} TbN{ex*
} ,D]g]#Lq
ezCJq`b
\=]`X2Ld
//启动子线程 ~8"oH5
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; #NYHwO<0-
for(int i=0;i<nStartPos.length;i++) ';c 6
{ ?Zsh\^k.g
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9q
2 vT^
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), *Ms"{+C
nStartPos,nEndPos,i); IkjJqz
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6x=w-32+ y
fileSplitterFetch.start(); zSU,le
} }6<5mq)%
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [u37Hy_Gi
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); I%GQ3D"=
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", j"aY\cLr t
nEndPos = " + nFileLength); T93st<F=R
// fileSplitterFetch[nPos.length-1].start(); 4y?n62N8$
C/#pK2xY
'Cz*p,
//等待子线程结束 jD}h`(bE
//int count = 0; S' kgpF"bm
//是否结束while循环 O`"~AY&
boolean breakWhile = false; +!E9$U>6%
]!@=2kG4
0a^bAEP
while(!bStop) |WEl5 bNc3
{ LME&qKe5
write_nPos(); 'bz&m( !
Utility.sleep(500); 5]upfC6
breakWhile = true; ~zG)<S"q
nE*S3
p<#aXs jy
for(int i=0;i<nStartPos.length;i++) LExm#T`
{ !{+.)%d'g
if(!fileSplitterFetch.bDownOver) \AH5zdK
{ _cj=}!I
breakWhile = false; hliO/3g
break; ,+4T7 U R
} U]_WX(4 @
} eEP{?F^I[
if(breakWhile) "bF52lLu
break; QKB+mjMH#x
K/ &`
,(zV~-:9
//count++; Tsj/alC[
//if(count>4) ~cfXEjE6
// siteStop(); 1K<}
} wy#>Aq
&Tj7qlP\
jZPGUoRLg
System.err.println("文件下载结束!"); 5pe)CjE:
} WZPj?ou`G
catch(Exception e){e.printStackTrace ();} cs.t#C
} O-K*->5S
g,!.`[e'ex
0Xw>_#Y/xS
//获得文件长度 r@qLG"[\c
public long getFileSize() H!u8+
{ ge.>#1f}
int nFileLength = -1; KK2YT/K$SG
try{ {*TB }Xsr,
URL url = new URL(siteInfoBean.getSSiteURL()); -m=A1~|7
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); yiI
oqvP
httpConnection.setRequestProperty("User-Agent","NetFox"); {wj%WSQj/y
=_z o
3Il._]#
int responseCode=httpConnection.getResponseCode(); W;2J~V!c
if(responseCode>=400) qlYi:uygY
{ {FKr^)g
processErrorCode(responseCode); *fIn<Cc
return -2; //-2 represent access is error 6w;`A9G[YI
} zow8 Q6f
V|kN 1
A
&]RE 5!
String sHeader; 5 QuRwu_
`[(XZhN
*pSnEWwE
for(int i=1;;i++) 3*2~#dh=
{ R6oD
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); \G>C{v;
//Utility.log(in.readLine()); 5[jS(1a`c
sHeader=httpConnection.getHeaderFieldKey(i); 5X+`aB
if(sHeader!=null) }F!Uu
KR
{ 2w8cJadT'p
if(sHeader.equals("Content-Length")) w43b=7
{ 4:NMZ `~
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ^Cp2#d*
break; N\B&|;-V
} h
~yTkN]
} H1B%}G*Ir-
else fuv{2[NV
break; d;0]xG?%=
} `N.:3]B
t
} x[0hY0 ?[M
catch(IOException e){e.printStackTrace ();} #&?ER]|3
catch(Exception e){e.printStackTrace ();} KB|mtsi
%A'mXatk
Xm>zT'B_tJ
Utility.log(nFileLength); YW&K,)L@
_.V5-iN
~5%3]
return nFileLength; JZ`h+fAt
} g=Xy{Vm
}EkL[H!
J( XDwt
//保存下载信息(文件指针位置) jQ3dLctn
private void write_nPos() G"J
nQ
{ .\ fpjQW
try{ ?{aJ#w
output = new DataOutputStream(new FileOutputStream(tmpFile)); rC_1f3A
output.writeInt(nStartPos.length); pgh(~[
for(int i=0;i<nStartPos.length;i++) K;sC#9m
{ S sW<,T
// output.writeLong(nPos); @9_mk@
output.writeLong(fileSplitterFetch.nStartPos); {G x=QNd
output.writeLong(fileSplitterFetch.nEndPos); IAwS39B
} a`%`9GD
output.close(); d/OP+yzgZ
} e3TKQ(
catch(IOException e){e.printStackTrace ();} saiXFM7J
catch(Exception e){e.printStackTrace ();} 3w"JzC@
} vu^mLc
!(? 7V
)AkBo
//读取保存的下载信息(文件指针位置) n:/!{.
private void read_nPos() N WF h<
{ =KOi#;1
try{ hIV]ZYbH
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6JZ>&HA
int nCount = input.readInt(); E9j<+Ik
nStartPos = new long[nCount]; -_5Dk'R#`
nEndPos = new long[nCount]; ZM -P
for(int i=0;i<nStartPos.length;i++) 5Ex[}y9L`
{ JFX}))7
nStartPos = input.readLong(); ~^a>C
nEndPos = input.readLong(); T[1iZ
} (:OMt2{r
input.close(); _xePh
} 1q-;+Pd;
catch(IOException e){e.printStackTrace ();} *6AV^^
catch(Exception e){e.printStackTrace ();} *`u|1}h|
} }vU/]0@,E
oJQS&3;/r
/"D,gn1S*
private void processErrorCode(int nErrorCode) lkTA"8d
{ iv +a5
System.err.println("Error Code : " + nErrorCode); g_c@Kyf
} sYDav)L.
c:0n/DC
*izCXfW7
//停止文件下载 Xzg >/w
8J
public void siteStop() vkhPE(f
{ Ly8=SIZ
bStop = true; ^SG>VfgC
for(int i=0;i<nStartPos.length;i++) 0~RD@>]
fileSplitterFetch.splitterStop(); "%D"h
\&kj#)JYA
M KW~rrR
} WFahb3kx
} yXDjM2oR/2
//负责部分文件的抓取 *|W](id7e
**FileSplitterFetch.java wMR,r@}
*/ \h#aPG<yo
package NetFox; ddKP3}
o"BED!/
NO[A00m|OL
import java.io.*; +&VY6(Zj+*
import java.net.*; m0ra
H%Vf$1/TF
vA_,TS#Bo
public class FileSplitterFetch extends Thread { mm+V*L{x
vi^YtA
_";w*lg}
String sURL; //File URL rrRv 7J&Q
long nStartPos; //File Snippet Start Position o5&b'WUJ=
long nEndPos; //File Snippet End Position :
pUu_
int nThreadID; //Thread's ID .tG3g:
boolean bDownOver = false; //Downing is over _xh)]R
boolean bStop = false; //Stop identical [q!]Ds"
_
FileAccessI fileAccessI = null; //File Access interface Gn^lF7yE
@br)m](@
*w*K&$g
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ,
p}:?uR
{ W+Mw:,>*s
this.sURL = sURL; xS12$ib ~G
this.nStartPos = nStart; /}E2Rr?{
this.nEndPos = nEnd; su=MMr>
nThreadID = id; [06m{QJ)1
fileAccessI = new FileAccessI(sName,nStartPos);//定位 lmHQ"z 3G
} iy]L"7&Z2
0~BaQ,
A@
7O*Sg2B
public void run() Cn5"zDK$
{ ;E
9o%f:o
while(nStartPos < nEndPos && !bStop) HoAg8siQ
{ RRS)7fFm
D`^wj FF
M&/4SVBF
try{ 9yTdbpY
URL url = new URL(sURL); JW0\y+o~
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); q7KHx b
httpConnection.setRequestProperty("User-Agent","NetFox"); c]x-mj =
String sProperty = "bytes="+nStartPos+"-"; "1Hn?4nz5
httpConnection.setRequestProperty("RANGE",sProperty); 9HFEp-"
Utility.log(sProperty); PZ6R+n8
Q`8-|(ngw
98u@X:3
InputStream input = httpConnection.getInputStream(); e.MyJ:eL
//logResponseHead(httpConnection); eC<RM Q4
V1M|p!
`=hCS0F
byte[] b = new byte[1024]; !c)F;
int nRead; 9F3,
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) x1g-@{8]j
{ -j<E_!t
nStartPos += fileAccessI.write(b,0,nRead); &_