/* ]oeuIRyQ
**SiteFileFetch.java !/6\m!e|1R
*/ K6v
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package NetFox; $xA J9_2P
import java.io.*; n^AP"1l8?0
import java.net.*; xY2}Wr
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public class SiteFileFetch extends Thread { 3WCqKXJ7
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SiteInfoBean siteInfoBean = null; //文件信息Bean W(2+z5 z
long[] nStartPos; //开始位置 @A2/@]H Bm
long[] nEndPos; //结束位置 M'umoZmW0
FileSplitterFetch[] fileSplitterFetch; //子线程对象 z1f^p7$M?
long nFileLength; //文件长度 .]j#y9>&w%
boolean bFirst = true; //是否第一次取文件 _{e&@d
boolean bStop = false; //停止标志 }dX/Y/
File tmpFile; //文件下载的临时信息 [,<\RviI
DataOutputStream output; //输出到文件的输出流 g\o{}Q%X
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 'Aj(i/CM
public SiteFileFetch(SiteInfoBean bean) throws IOException l:Dn3Q
{ -DP8NTl"
siteInfoBean = bean; b/sOfQ
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <i}q=%W!1
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Ap]4QqU
if(tmpFile.exists ()) 4,2(nYF
{ |*:tyP%m^
bFirst = false; i90}Xyt
read_nPos(); tXt:HVN
} >;)2NrJV
else %yp5DD}|
{ 9#uIC7M
nStartPos = new long[bean.getNSplitter()]; wW-A b
nEndPos = new long[bean.getNSplitter()]; 2\VAmPG.Zs
} N31?9GE
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} LfEvc2
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public void run() ~\$=w10
{ /|GT\X4o
//获得文件长度 \eQla8s
//分割文件 wepwXy"
//实例FileSplitterFetch Sk\n;mL:
//启动FileSplitterFetch线程 r}
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//等待子线程返回 3cqQL!Gm
try{ }f#_4ACaD
if(bFirst) 3?2<WEYr
{ 0x@A~!MoP
nFileLength = getFileSize(); j$Nf%V 6Y
if(nFileLength == -1) ~wOTjz
{ `?|Rc
System.err.println("File Length is not known!"); w$j{Hp6m
} >GXXjAIu/
else if(nFileLength == -2) &~ *.CQa
{ 9_ZBV{
System.err.println("File is not access!"); q\Rq!7(
} jH>8bXQqZ
else r?p[3JJ;mG
{ BC! 6O/kr
for(int i=0;i<nStartPos.length;i++) vT c7an6fy
{ v^SsoX>WMH
nStartPos = (long)(i*(nFileLength/nStartPos.length)); d
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} o5swH6Y.)J
for(int i=0;i<nEndPos.length-1;i++) pYo=oI
{ i%;"[M
nEndPos = nStartPos[i+1]; nBz`q+V
} I{ ryD -!
nEndPos[nEndPos.length-1] = nFileLength; GqLq gns
} 5Fbs
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} 53Yxz3v
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//启动子线程 raE
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Qz,|mo+
for(int i=0;i<nStartPos.length;i++) 3[d>&xk@$
{ sw;|'N$:<
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), n2f6p<8A
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #.._c?%4/
nStartPos,nEndPos,i); UDEj[12S
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); M`7y>Ud
fileSplitterFetch.start(); kWhr1wR1
} ?9mkRd}c
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3qaMO#{M
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); -Z0+oU(?YE
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Xg7|JS!
nEndPos = " + nFileLength); 5~H#(d<oZ
// fileSplitterFetch[nPos.length-1].start(); "m$3)7 $
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//等待子线程结束 >C r\y
//int count = 0; 2`?!+")
//是否结束while循环 y_p.Gzy(^}
boolean breakWhile = false; u92^(|
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while(!bStop) S( ^.?z
{ x =q;O+7]
write_nPos(); r;&>iX4B
Utility.sleep(500); T,%j\0
breakWhile = true;
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for(int i=0;i<nStartPos.length;i++) m
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{ 2`GOJ,$
if(!fileSplitterFetch.bDownOver) a^U~0i@[S
{ 8s{?v&p
breakWhile = false; _)T5lEFl=
break; ^T::-pN*
} 'cix`l|^
} 06q(aI^Ch@
if(breakWhile) 6( CDNMzj
break; BZ!v%4^9
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//count++; !K
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//if(count>4) eqw0]U\pv
// siteStop(); ?W^c4NtP
} y*pUlts<
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System.err.println("文件下载结束!"); li~d?>
} ia\eLzj
catch(Exception e){e.printStackTrace ();} =U%Rvm
} 3b' QLfU
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//获得文件长度 QnZcBXI8
public long getFileSize() )E@A0 W
{ ),G= s Oo
int nFileLength = -1; b2b^1{@h;v
try{ Tq]Sn]CSP
URL url = new URL(siteInfoBean.getSSiteURL()); 79`AM
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^6_e=jIN
httpConnection.setRequestProperty("User-Agent","NetFox"); *s9C!wYMZ
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int responseCode=httpConnection.getResponseCode(); rM'=_nmi
if(responseCode>=400) _%5Ro6
{ ~//fN}~R
processErrorCode(responseCode); IiY/(N+J
return -2; //-2 represent access is error C(00<~JC
} b0lq\9
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String sHeader; .Fdgb4>BXX
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for(int i=1;;i++) {NHdyc$
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//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); XUz3*rfs
//Utility.log(in.readLine()); <YdE1{fm
sHeader=httpConnection.getHeaderFieldKey(i); 9I6a"PGDb
if(sHeader!=null) !\7!3$w'8,
{ _d5QbTe
if(sHeader.equals("Content-Length")) \ExMk<y_&
{ wK?vPS
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); u6AA4(
break; U4d:] z
} L7dd(^
} wne,e's}
else gt@m?w(
break; wOU_*uY@6'
} RW<D<5C
} A~)D[CV
catch(IOException e){e.printStackTrace ();} sS*3=Yh
catch(Exception e){e.printStackTrace ();} |olA9mp|]
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Utility.log(nFileLength); 4y|BOVl
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return nFileLength; ;ub;lh 3
} ZrpU <
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//保存下载信息(文件指针位置) |-:()yxs
private void write_nPos() -|$@-fY;
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try{ Lt64JH^lz
output = new DataOutputStream(new FileOutputStream(tmpFile)); rNXQf'*I
output.writeInt(nStartPos.length); xF!,IKlBBp
for(int i=0;i<nStartPos.length;i++) "\:`/k3
{ 9X}10u:
// output.writeLong(nPos); +$ 'Zf0U
output.writeLong(fileSplitterFetch.nStartPos); p`olCp'
output.writeLong(fileSplitterFetch.nEndPos); .*OdqLz
} ]L5@,E4.
output.close(); 3lrT3a3vV
} <cps2*'
catch(IOException e){e.printStackTrace ();} (KjoSN(
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catch(Exception e){e.printStackTrace ();} 9+Np4i@
} n(1l}TJy
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//读取保存的下载信息(文件指针位置) "q3ZWNS'w
private void read_nPos() X_q\S g
{ *&