/* $HRed|*.C
**SiteFileFetch.java 4_<
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package NetFox; }1rvM4{/+f
import java.io.*; OWV/kz5'H
import java.net.*; [#X|+M&u6
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public class SiteFileFetch extends Thread { '(9YB9 i
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SiteInfoBean siteInfoBean = null; //文件信息Bean 6~:+:;
long[] nStartPos; //开始位置 >x?2Fz.
long[] nEndPos; //结束位置 \L#QR
FileSplitterFetch[] fileSplitterFetch; //子线程对象 }*-u$=2
long nFileLength; //文件长度 5vGioO
boolean bFirst = true; //是否第一次取文件 j1F w
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boolean bStop = false; //停止标志 ]|BojSL_
File tmpFile; //文件下载的临时信息 E(/ sXji!
DataOutputStream output; //输出到文件的输出流 104!!m
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) S2}Z&X(
public SiteFileFetch(SiteInfoBean bean) throws IOException iwkJ~(5z
{ p)z-W(
siteInfoBean = bean; `G0*l|m>
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); n'3u ]~7^
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }MjQP R
if(tmpFile.exists ()) O"QHb|j
{ SauHFl8?
bFirst = false; {tmKCG
read_nPos(); ,]U[W
} GRQ_+K
else n>T:2PQ3
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nStartPos = new long[bean.getNSplitter()]; r+TK5|ke
nEndPos = new long[bean.getNSplitter()]; M4H"].Zm
} ;&7,73!
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} (7 ijt
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public void run() n`QO(pZ6+
{ $"1pws?d
//获得文件长度 `;}H%
//分割文件 vh{9'vd3el
//实例FileSplitterFetch %2zas(b9j
//启动FileSplitterFetch线程 (qj,GmcS
//等待子线程返回 9[,s4sxH
try{ l-MxLcz
if(bFirst) 86#-q7aX
{ ${@q?iol
nFileLength = getFileSize(); /Bm#`?(ia
if(nFileLength == -1) 2J&XNV^tJ
{ Vbo5`+NAis
System.err.println("File Length is not known!"); ~r PYJ
} lJlZHO
else if(nFileLength == -2) &h\CS8nT%
{ V 1*Ad
System.err.println("File is not access!"); 44Q9 *."
} U~CdU
else ki`8(u6l
{ H)`@2~Y
for(int i=0;i<nStartPos.length;i++) yz8-&4YRNd
{ J2'W =r_#
nStartPos = (long)(i*(nFileLength/nStartPos.length)); ,y{0bq9*2
} _o&94&
for(int i=0;i<nEndPos.length-1;i++)
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{ 6SV7\,2M
nEndPos = nStartPos[i+1]; k*OvcYL1A
} /=q.tDH=I
nEndPos[nEndPos.length-1] = nFileLength; F G3Sk!O6
} ,zD_% ox
} **.:)
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//启动子线程 au,jAk
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 8H7O/n
for(int i=0;i<nStartPos.length;i++) k)|'JDm
{ ZWFG?8lJ
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), |G)Y8 #D
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), {v,{x1
nStartPos,nEndPos,i); yAAG2c4(
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); kq>GMUl~@
fileSplitterFetch.start(); ](_{,P
} ,TEuM|
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @W#fui<<}Y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); LSSW.Oz2L
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", z;[gEA+I
nEndPos = " + nFileLength); L
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// fileSplitterFetch[nPos.length-1].start(); Ut]2` 8-
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//等待子线程结束 GKiq0*/M
//int count = 0; {=s:P|ah
//是否结束while循环 "havi,m
boolean breakWhile = false; qFrt^+@
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while(!bStop) {>wI8
{ m"<4\;GK
write_nPos(); 1B6C<cL:sU
Utility.sleep(500); 8~.iuFp
breakWhile = true; d3Y(SPO
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for(int i=0;i<nStartPos.length;i++) /8=:qIJYA
{ m5)EQE}gPp
if(!fileSplitterFetch.bDownOver) xLe
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{ E2Us#a
breakWhile = false; h (qshbC}
break; 0{-`Th+h
} #fwzFS \XL
} Ica3
if(breakWhile) 4sb )^3T
break; .F4oo =
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//count++; D*CIE\+
//if(count>4) 3T"#T&eL
// siteStop(); HmhUc,EC
} qe[
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System.err.println("文件下载结束!"); 4g>1Gqv6
} jo<>Hc{g>
catch(Exception e){e.printStackTrace ();} `E{;85bDH
} anK[P'Y
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//获得文件长度 $<
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public long getFileSize() ftO+.-sm<
{ {-o7w0d_
int nFileLength = -1; 03~+-h&n
try{ ^uC"dfH
URL url = new URL(siteInfoBean.getSSiteURL()); CKx\V+\O
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4Y`! bT`
httpConnection.setRequestProperty("User-Agent","NetFox"); EfFj!)fz
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int responseCode=httpConnection.getResponseCode(); Jz=;mrW
if(responseCode>=400) =*{K@p_
{ B"7$!C o
processErrorCode(responseCode); BHF{-z
return -2; //-2 represent access is error 2^cAK t6bC
} W8Ke1(ws&
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String sHeader; `kqT{fs
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for(int i=1;;i++) I h5/=_n
{ $|>6z_3%
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ny278tr Q7
//Utility.log(in.readLine()); nwY2BIB
sHeader=httpConnection.getHeaderFieldKey(i); NnJ>0|74g
if(sHeader!=null) JCM)N8~i
{ UN,<6D3\b
if(sHeader.equals("Content-Length")) -;sJ25(
{ aw%>YrJ
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); "CIpo/ebL
break; `DI{wqV9
} u86J.K1Q
} g ^D)x[
else ;~}-AI-
break; }9MW!Ss
} Z|]l"W*w
} UeMnc 5y
catch(IOException e){e.printStackTrace ();} #rh0r`
catch(Exception e){e.printStackTrace ();} '}wG"0
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Utility.log(nFileLength); EZ:I$X
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return nFileLength; RH<@c^ S
} j)6@q@P/
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//保存下载信息(文件指针位置) [37f#p
private void write_nPos() VaD:
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try{ L~^e\^sP
output = new DataOutputStream(new FileOutputStream(tmpFile)); 1.hOE>A%
output.writeInt(nStartPos.length); +9<,3IJe6
for(int i=0;i<nStartPos.length;i++) 0-8ELX[#
{ $=\oJ-(!@S
// output.writeLong(nPos); @qg0u#k5
output.writeLong(fileSplitterFetch.nStartPos); ~0VwF
output.writeLong(fileSplitterFetch.nEndPos); I>N-95
} *D,v>(
output.close(); [,\'V0
} E&RoaY0
catch(IOException e){e.printStackTrace ();} [VfLv.8w
catch(Exception e){e.printStackTrace ();} *T.={>HE8
} rg#qSrHp
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//读取保存的下载信息(文件指针位置) Y}V)4j
private void read_nPos() !mw{T D
{ +~R.7NE%
try{ o`<h=+a\
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); H;7O\
int nCount = input.readInt(); S+` !%hJ
nStartPos = new long[nCount]; K9x*Sep
nEndPos = new long[nCount]; w\0Oz?N
for(int i=0;i<nStartPos.length;i++) *>}McvtTw
{ J
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nStartPos = input.readLong(); /t%"Dh8x
nEndPos = input.readLong(); /u"
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} Q1N,^71
input.close(); a}^!TC>%1i
} 4aIlzaA
catch(IOException e){e.printStackTrace ();} |R_xY=z?
catch(Exception e){e.printStackTrace ();} Li?{e+ g
} 6E*Zj1KX
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private void processErrorCode(int nErrorCode) Og&0Z)%
{ SdEb[
System.err.println("Error Code : " + nErrorCode); L<[,7V
} [)b/uR
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//停止文件下载 0ER6cTo-t
public void siteStop() 7|{%CckN
{ a$+e8>
bStop = true; a9mr-`<
for(int i=0;i<nStartPos.length;i++) T }8r;<P6
fileSplitterFetch.splitterStop(); p ] $
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} &9jUf:g J0
} 37ri b
//负责部分文件的抓取 8V53+]c$Y
**FileSplitterFetch.java skmDsZzw
*/ P /f ~
package NetFox; h!JjN$
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import java.io.*; \nWzn4f
import java.net.*; hg86#jq%
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public class FileSplitterFetch extends Thread { ^<5^9]x
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String sURL; //File URL ( .6tz
long nStartPos; //File Snippet Start Position R- ?0k:
long nEndPos; //File Snippet End Position %_i0go,^
int nThreadID; //Thread's ID hQW#a]]V:
boolean bDownOver = false; //Downing is over x.yb4i=Jq
boolean bStop = false; //Stop identical Z"+rg9/p
FileAccessI fileAccessI = null; //File Access interface .DV#-tUh
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