/* StWDNAf)
**SiteFileFetch.java MC/$:PV
*/ sMli! u
package NetFox; #$%9XD3
import java.io.*; .9> er
import java.net.*; YL&$cT]1
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public class SiteFileFetch extends Thread { B8 -/C\
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SiteInfoBean siteInfoBean = null; //文件信息Bean "OFYVK\]i
long[] nStartPos; //开始位置 C ^Tc9
long[] nEndPos; //结束位置 \SnW(,`o X
FileSplitterFetch[] fileSplitterFetch; //子线程对象 kR6rf_-[
long nFileLength; //文件长度 88h-.\%Z
boolean bFirst = true; //是否第一次取文件 JiP]FJ;
boolean bStop = false; //停止标志 &6,GX7]Fo
File tmpFile; //文件下载的临时信息 *%'4.He7V
DataOutputStream output; //输出到文件的输出流 #O^H?3Q3
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) j DcE_55o
public SiteFileFetch(SiteInfoBean bean) throws IOException ;=hl!CB
{ b]~X
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siteInfoBean = bean; wCeSs=[
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 5?k_Q"~
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ~*Ve>4
if(tmpFile.exists ()) HGB96,o f9
{ 4XQ v
bFirst = false; M9]O!{sq
read_nPos(); gGN[AqR
} 9#/z[!
else J @"wJEF
{ d7^:z%Eb|
nStartPos = new long[bean.getNSplitter()]; W+a>*#*
nEndPos = new long[bean.getNSplitter()]; q NU\XO`H
} wsP3hE' ]
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} qDhz|a#
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public void run() M\,0<{
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//获得文件长度 <X
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//分割文件 W DY,?
//实例FileSplitterFetch x+nrdW+
//启动FileSplitterFetch线程 Lh"Je-x<<
//等待子线程返回 @= 6}w_
try{ O\XN/R3
if(bFirst) ,y,NVF
{ i+Px &9o<9
nFileLength = getFileSize(); h -+vM9j
if(nFileLength == -1) !zvKl;yT
{ ;_of'
System.err.println("File Length is not known!"); waQNX7Xdn
} }Nl-3I.S^
else if(nFileLength == -2) E92dSLhs5
{ +kH*BhSj
System.err.println("File is not access!"); ;QW6Tgt11
} qUx!-DMY
else f_9%kEXICt
{ N|z-s
for(int i=0;i<nStartPos.length;i++) odny{ePAf
{ eek5Xm
nStartPos = (long)(i*(nFileLength/nStartPos.length)); rgB`<[:b
} fa/
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for(int i=0;i<nEndPos.length-1;i++) J@H9nw+Q
{ D._q'v<
nEndPos = nStartPos[i+1]; 9X@y*;w<t
} zbx,qctYo$
nEndPos[nEndPos.length-1] = nFileLength; ]Tf.KUm
}
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} 7}%3Aw6]S
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//启动子线程 %xyt4}-)m
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; K4N~ApLB+
for(int i=0;i<nStartPos.length;i++) 45edyQ
{ oA"t`,3
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), st|$Fu
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), E4HG`_cWb
nStartPos,nEndPos,i); u\ytiGO*
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); t=~al8
fileSplitterFetch.start(); JQ%e'
} V(=~p[
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), -/B}XNW
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); CP |N2rb
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", lK9us
nEndPos = " + nFileLength); 8K]fw{-$L
// fileSplitterFetch[nPos.length-1].start(); ><TuL7+
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//等待子线程结束 PD$ay^Y
//int count = 0; V~&P<=8;Wl
//是否结束while循环 aa.EtKl
boolean breakWhile = false; S$%T0~PR~
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while(!bStop) Q68&CO(rE
{ W~POS'1
write_nPos(); 1V+a;-?
Utility.sleep(500); +AtZltM i
breakWhile = true; IW
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for(int i=0;i<nStartPos.length;i++) ^%)'wDK
{ H-nk\ K<|
if(!fileSplitterFetch.bDownOver) <)uUAh
{ hc"+6xc
breakWhile = false; 7cK#fh"hvg
break; {Rc/Ten
} &%>l9~F'~
} s59v*
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if(breakWhile) z=N'evx~
break; YnNB#x8|
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//count++; G>M#
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//if(count>4) Vu*yEF}
// siteStop(); &AU%3b
} bguhx3s
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System.err.println("文件下载结束!"); H(lq=M0~
} ..Zuy|?w
catch(Exception e){e.printStackTrace ();} bDeHU$
} !Q*.Dw()[
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//获得文件长度 g*N~r['dZ
public long getFileSize() NC>rZS]
{ % rRYT8
int nFileLength = -1; m_W\jz??k
try{ ipQJn_:2
URL url = new URL(siteInfoBean.getSSiteURL()); wlAlIvIT
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); j_L 'Ztu3
httpConnection.setRequestProperty("User-Agent","NetFox"); ?NGM<nK;7
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int responseCode=httpConnection.getResponseCode(); Cj _Q9/
if(responseCode>=400) ZK27^oG
{ ua0`&,a3I
processErrorCode(responseCode); WQ\' z?P
return -2; //-2 represent access is error - A
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} SJ6lI66OX
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String sHeader; ?uc=(J+6
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for(int i=1;;i++) 1/jJ;}
{ al F*L
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); GLB7h9>
//Utility.log(in.readLine()); N0O8to}V
sHeader=httpConnection.getHeaderFieldKey(i); glH&v8
if(sHeader!=null) $LRvPan`
{ -w1U/o.
if(sHeader.equals("Content-Length")) 0F8y8s
{ V9`VFO
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); kUUN2
break; D(Pd?iQIO
} MG*#-<OV.
} (*;b\h
else we4e>)
break; '\(Us^Ug
} ` Xhj7%>
} =<YG0K
catch(IOException e){e.printStackTrace ();} }y(1mzb
catch(Exception e){e.printStackTrace ();} ~k/'_1)c
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Utility.log(nFileLength); !e?=I
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return nFileLength; 89v9BWF
} e4b`C>>
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//保存下载信息(文件指针位置) [M 65T@v
private void write_nPos() ` {c %d
{ =5l7{i*`
try{ btkD<1{g
output = new DataOutputStream(new FileOutputStream(tmpFile)); E
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output.writeInt(nStartPos.length); = 7d{lK
for(int i=0;i<nStartPos.length;i++) "a6[FqTs
{ ^GQ+,0Yy
// output.writeLong(nPos); BD&JbH!(
output.writeLong(fileSplitterFetch.nStartPos); |>5NH'agV
output.writeLong(fileSplitterFetch.nEndPos); )'?3%$EM
} G#t!{Q}8
output.close(); ;vR0O
} oS 7 q#`
catch(IOException e){e.printStackTrace ();} 0j %s
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catch(Exception e){e.printStackTrace ();} dZFf/BXU
} qZ'&zB)
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//读取保存的下载信息(文件指针位置) 12U1DEd>-
private void read_nPos() )s5Q4m!
{ mY*JNx
try{ X!ZUR^
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); %D< =6suW
int nCount = input.readInt(); )cJ9YKKy
nStartPos = new long[nCount]; zlco?Rt
nEndPos = new long[nCount]; u27K
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for(int i=0;i<nStartPos.length;i++) Qh<_/X?
{ w6zB uW
nStartPos = input.readLong(); /oKa?iT
nEndPos = input.readLong(); |k1(|)%G
} #!wu}nDu
input.close(); qPDe;$J)
} ~2+J]8@I]
catch(IOException e){e.printStackTrace ();} {U?/u93~
catch(Exception e){e.printStackTrace ();} JWoNP/v6
} bW\OKI1
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private void processErrorCode(int nErrorCode) w[}5qAI5*f
{ tGDsZ;3Yr
System.err.println("Error Code : " + nErrorCode); LG0+A}E=C
} )ZC0/>R
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//停止文件下载 ;|*o^9q
public void siteStop() F`IV9qv
{ }K1v=k
bStop = true; ad+@2-Y
for(int i=0;i<nStartPos.length;i++) U2m86@E
fileSplitterFetch.splitterStop(); m>B^w)&C
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} hC2 @Gq
} m%hI@'
//负责部分文件的抓取 d#xi_L!
**FileSplitterFetch.java 8MqKS}\H
*/ zO)A_s.6K
package NetFox; n`gW&5,,z
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import java.io.*; V<:scLm#OF
import java.net.*; *;@V5[^3I?
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public class FileSplitterFetch extends Thread { RG[b+Qjn
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String sURL; //File URL #~QkS_
long nStartPos; //File Snippet Start Position S bI7<_
long nEndPos; //File Snippet End Position E>>@X^ =
int nThreadID; //Thread's ID LgFF+z
boolean bDownOver = false; //Downing is over M9so3L<N0
boolean bStop = false; //Stop identical $fZVh%
FileAccessI fileAccessI = null; //File Access interface ;|7]%Z}%
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException U0>Uqk",
{ K;j}qJvsb
this.sURL = sURL; f/+UD-@%m
this.nStartPos = nStart; OwRH
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this.nEndPos = nEnd; W
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nThreadID = id; ip.aM#
fileAccessI = new FileAccessI(sName,nStartPos);//定位 vU|=" #
} |hGi8
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public void run() QE8;Jk-
{ )2vkaR
while(nStartPos < nEndPos && !bStop) 2smQD8t
{ k6.<