/* efy65+~GG
**SiteFileFetch.java Ha@'%<gFe
*/ 4v33{sp
package NetFox; wxkCmrV
import java.io.*;
nk>
import java.net.*; 3DV';
.|JJyjRA+
v98=#k!F
public class SiteFileFetch extends Thread { Mhm3u
}\:3}'S.$
xKWqDt
SiteInfoBean siteInfoBean = null; //文件信息Bean 2xhwi.u
long[] nStartPos; //开始位置 Sf
B+;i'D
long[] nEndPos; //结束位置 Yewn
FileSplitterFetch[] fileSplitterFetch; //子线程对象 cNtGjLpx;
long nFileLength; //文件长度 [pUw(KV2m
boolean bFirst = true; //是否第一次取文件 wV+ W(
boolean bStop = false; //停止标志 D!h8NZ;El
File tmpFile; //文件下载的临时信息 B&Q\J>l9S
DataOutputStream output; //输出到文件的输出流 !lKO|Y
+J}
wYind
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) $\Bzp<SN`
public SiteFileFetch(SiteInfoBean bean) throws IOException K19/M1~
{ h8Q+fHDYv
siteInfoBean = bean; X]U,`oE)9
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Q g"hN
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); hF s:9
if(tmpFile.exists ()) 01g=Cg
{ >N@tInE
bFirst = false; {UX?z?0T
read_nPos(); /1F%w8Iqh
} %I9{)'+@x
else X|q&0W=
{ rIH/<@+
nStartPos = new long[bean.getNSplitter()]; upg?
nEndPos = new long[bean.getNSplitter()]; U":hJ*F)
} l~;H~h!h/
t
9&xk?%{
((Ak/ qz
;&q}G1
} I@+h|
n
j2c -01}
S_/9eI~X
public void run() <`i"5`J
{ 15+>W4v
//获得文件长度 |!E>I
//分割文件 dqnH7okZ
//实例FileSplitterFetch y >r7(qg
//启动FileSplitterFetch线程 n$
$^(-g@)
//等待子线程返回 lqn7$
try{ B8UtD
if(bFirst) veAg?N<c
p
{ C8rD54A'M
nFileLength = getFileSize(); I|9(*tq)
if(nFileLength == -1) HS XS%v/Y
{ f]`#BE)V
System.err.println("File Length is not known!"); n0F.Um
} FRd!UqMXY
else if(nFileLength == -2) (+68s9XS7
{ C93BK)$}
System.err.println("File is not access!"); Xf!@uS6<X
} NUbw]Y90~
else u~[HC)4(0
{ fuSfBtLPR#
for(int i=0;i<nStartPos.length;i++) ^e:C{]S=
{ +%Q:
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ,A`d!{]5
} 0{^vqh.La
for(int i=0;i<nEndPos.length-1;i++) 1rKKp h
{ 6E/>]3~!
nEndPos = nStartPos[i+1]; Se<]g$eK?5
} "[2CV!_
nEndPos[nEndPos.length-1] = nFileLength; l*>t@:2J
} $3<,"&;Ecs
} 6w(Mb~[n
+KgoL a
v,y nz'>)
//启动子线程 2+zE|I.
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^!^6 | [
for(int i=0;i<nStartPos.length;i++) BZq_om6
{ 0T7(c-
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !Ob
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), %a=K:" oU[
nStartPos,nEndPos,i); >}Qj|05G
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ec
IgX_\
fileSplitterFetch.start(); 9pUvw_9MY
} fZ1v|
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :f%FM&b
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); DX GClH
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", VN[C%C
nEndPos = " + nFileLength); 59mNb:<
// fileSplitterFetch[nPos.length-1].start(); <6QG7i
uMVM- (g%
%|E'cdvkX
//等待子线程结束 _Z?{&k
//int count = 0; @)PA9P |
//是否结束while循环 mAMi-9
boolean breakWhile = false; **_`AM~
D,q=?~
g?`g+:nug
while(!bStop) .w2QiJ
{ Go~bQ2*'(/
write_nPos(); BC*vG=a
Utility.sleep(500); _nu,ks+
breakWhile = true; Tlrr02>B{
IN=pki|.
^,u0kMG5l
for(int i=0;i<nStartPos.length;i++) |T?wM/
{ sq TBlP
if(!fileSplitterFetch.bDownOver) Ay)q %:qx
{ :K.%^ag=j
breakWhile = false; R}Pw#*B
break; io:g]g
} QK _1!t3
} 88}+.-3t$
if(breakWhile) 7'u<)V
break; dv=y,q@W
%pj6[x`@
PN9^ sLx=
//count++; r@N 0%JZZ
//if(count>4) j
!^Tw.Ty
// siteStop(); {Hncm
} :VwU2
xg=}MoX
2VmQ%y6e"
System.err.println("文件下载结束!"); =B4,H=7Spf
} HUqG)t*c1
catch(Exception e){e.printStackTrace ();} Oop5bg
} VD[x}8ei
jv$Y]nf
RtVy^~=G
//获得文件长度 ' =MaO@ @
public long getFileSize() fxfzi{}uj
{ r@C2zF7
int nFileLength = -1; P^m+SAAB
try{ z'@j9vT
URL url = new URL(siteInfoBean.getSSiteURL()); n8<o*f&&9>
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); dFY]~_P472
httpConnection.setRequestProperty("User-Agent","NetFox"); 3TUW+#[Gu
]jbQou@
GMmz`O
XN
int responseCode=httpConnection.getResponseCode(); 9$,x^Qx
if(responseCode>=400) $r`K4g
{ h(}$-' g
processErrorCode(responseCode); dWHl<BUm
return -2; //-2 represent access is error v|5:;,I
} is=sV:j:
+mRFHZG
/H#- \r&r
String sHeader; 2|'v[
a*LT <N
YnnpgR.
for(int i=1;;i++) gcYx-gA}
{ >!+.M9
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); xlPUum-o
//Utility.log(in.readLine()); TDI8L\rr
sHeader=httpConnection.getHeaderFieldKey(i); wMy$T<:
if(sHeader!=null) m"Y;GzqQl
{ ~3}Gu^@
if(sHeader.equals("Content-Length")) e$F]t*)Xa
{ z;1y7W!v
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); %bI(
break; |8I #`
} 8r
'
} .DSn
H6O
else (IXiwu
break; ^l1tQnj)7
} =H*}{'#
} shW$V93<
catch(IOException e){e.printStackTrace ();} U3r[ysf
catch(Exception e){e.printStackTrace ();} ( Lj{V}^
\)'nxFKqV
`|K,E
Utility.log(nFileLength); b?Wg|D
3L/qU^`
=ark?<E
return nFileLength; %M8Egr2|0
} "8K>Yu17
R'a%_sACj>
H
<CsB
//保存下载信息(文件指针位置) ,4y'(DA
private void write_nPos() N;,?k.vU
{ 97:1L4w.(
try{ .0]4@'
output = new DataOutputStream(new FileOutputStream(tmpFile)); wUzQ`h2
output.writeInt(nStartPos.length); Hj
]$
for(int i=0;i<nStartPos.length;i++) PoMkFG6
{ /x.TF'Z*
// output.writeLong(nPos); Q,Tet&in )
output.writeLong(fileSplitterFetch.nStartPos); ]2G5ng' @
output.writeLong(fileSplitterFetch.nEndPos); <%eY>E
} >}QRMn|@H
output.close(); w?CbATQ
} 0P`wh=")
catch(IOException e){e.printStackTrace ();} `mPmEV<
catch(Exception e){e.printStackTrace ();} f@l 6]z{.L
} ~ZU;0#
C("PCD
A7U'>r_.
//读取保存的下载信息(文件指针位置) CG'NC\x5
private void read_nPos() R`=3lY;
{ &SS"A*xg
try{ Lm+!/e
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); )
Kfk\
int nCount = input.readInt();
'$Jt}O
nStartPos = new long[nCount]; eydVWVN
nEndPos = new long[nCount]; ln.kEhQ3B
for(int i=0;i<nStartPos.length;i++) $mm =$.
{ r`u}n
nStartPos = input.readLong(); }_XW?^/8
nEndPos = input.readLong(); sh.xp8^)^>
} :1u>T3L.z
input.close(); khT&[!J{>
} ,CW]d#P|
catch(IOException e){e.printStackTrace ();} &_FNDJ>MCk
catch(Exception e){e.printStackTrace ();} `;fh<kv
} PK1j$&F
BmYU#h
8)/i\=N3;
private void processErrorCode(int nErrorCode) GkMNV7"m
{ gd<8RVA
System.err.println("Error Code : " + nErrorCode); oTZ?x}Z1
} "?,3O2t
SCeZt [
RAKQ+Y"nl
//停止文件下载 ANSv ZqKh
public void siteStop() aKs!*uo0H
{ FtN1ZZ"<*
bStop = true; []Cvma1\
for(int i=0;i<nStartPos.length;i++) bGRI^
[8#+
fileSplitterFetch.splitterStop(); TRz~rW
k
ezTu1-m
S-Va_t$
} /rp4m&