/* JqQ3C}z
**SiteFileFetch.java C~:b* X
*/ zQ=aey%
package NetFox; t3K>\ :
import java.io.*; Zr5'TZ`$
import java.net.*; O${r^6Hh
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public class SiteFileFetch extends Thread { uH=Gt^_
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SiteInfoBean siteInfoBean = null; //文件信息Bean 5#P: "U
long[] nStartPos; //开始位置 2"zI R(
long[] nEndPos; //结束位置 0NVG"-Q
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ]y$)%J^T
long nFileLength; //文件长度 [;Vi~$p|Eo
boolean bFirst = true; //是否第一次取文件 rT o%=0P
boolean bStop = false; //停止标志 1XQ87~
File tmpFile; //文件下载的临时信息 E8+8{
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DataOutputStream output; //输出到文件的输出流 vsjM3=
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Bk@bN~B4
public SiteFileFetch(SiteInfoBean bean) throws IOException 20n%o&kG]8
{ oUCS|
siteInfoBean = bean; $B*qNYpPy.
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); HH+TjX/b
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); bL+sN"Km
if(tmpFile.exists ()) NuHL5C?To
{ Mp!2`4rD
bFirst = false; XL=2wh
read_nPos(); O^y$8OKEi,
} 0qOM78rE
else 'Dnq+
{ 4
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nStartPos = new long[bean.getNSplitter()]; -v;iMEZ)
nEndPos = new long[bean.getNSplitter()]; //VG1@vaVX
} LPsh?Ca?N
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} $h C~af6
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public void run() 4U_rB9K$
{ o-~-F+mj#
//获得文件长度 gGF$M
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//分割文件 ^.nwc#
//实例FileSplitterFetch |L*6x
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//启动FileSplitterFetch线程 9
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//等待子线程返回 ytg7p 5{!i
try{ .0rJIO
if(bFirst)
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{ $XU-[OF%:9
nFileLength = getFileSize(); ^!N;F"
if(nFileLength == -1) ~Ay
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System.err.println("File Length is not known!"); <t% Ao,"
} Fj'\v#h
else if(nFileLength == -2) Rh5@[cg%
{ h;&&@5@lM
System.err.println("File is not access!"); 0;.e#(`-
} 1t!&xvhG
else |j\eBCnH3
{ OFJJ-4[_3
for(int i=0;i<nStartPos.length;i++) c }g$1of87
{ \mqhugy
nStartPos = (long)(i*(nFileLength/nStartPos.length)); \UVT_=Y
} F0DPS:c
for(int i=0;i<nEndPos.length-1;i++) DK2c]i^|=
{ TiwHLb9
nEndPos = nStartPos[i+1]; :FEd:0TS
} Lqy|DJ%
nEndPos[nEndPos.length-1] = nFileLength; gEX:S(1QP
} k
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} &QiAM`MbC=
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//启动子线程 pP=_@3 D
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; M)bC%(xJ
for(int i=0;i<nStartPos.length;i++) Zb5T90s%
{ p]atH<^;K
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1aXIhk4
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), DR#3njjEC
nStartPos,nEndPos,i); P2<gHJ9t
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?etj.\q6
fileSplitterFetch.start(); lk5_s@V
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} 7!]k#|u
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), aC
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); F!DrZd>\
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", YB(#]H|8S
nEndPos = " + nFileLength); L>|A6S#y8/
// fileSplitterFetch[nPos.length-1].start(); fh/)di
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//等待子线程结束 nJnO/~|
//int count = 0; kr &:;
//是否结束while循环 5cv,
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boolean breakWhile = false; ePFC$kMn
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while(!bStop) ~}FLn9@*
{ lUm}nsp=X
write_nPos(); lW@:q04Z$
Utility.sleep(500); (]GY.(F{
breakWhile = true; `qQQQ.K7)z
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for(int i=0;i<nStartPos.length;i++) dvH67 x
{ {ILQ
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if(!fileSplitterFetch.bDownOver) aG8;,H=%,
{ J[Y lo&w3
breakWhile = false; 0.3[=a43
break; |$i1]Dr6
} dRarNW
} #&HarBxx
if(breakWhile) )xXrs^
break; ./z"P]$
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//count++; 0Mzc1dG:
//if(count>4) }pU!1GsO
// siteStop(); `^@g2c+d
} 4%Wn}@
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System.err.println("文件下载结束!"); KH CdO
} M 2U@gC|{
catch(Exception e){e.printStackTrace ();} IT{.^rP
} iKCTYXN1(
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//获得文件长度 +RKE|*y
public long getFileSize() o
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{ 7cQHRM+1
int nFileLength = -1; R&d_WB4w
try{ }@t'rK[
URL url = new URL(siteInfoBean.getSSiteURL()); i(TDJ@}
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); tI6USN%
httpConnection.setRequestProperty("User-Agent","NetFox"); }G0.Lq+a
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int responseCode=httpConnection.getResponseCode(); A/W7;D
if(responseCode>=400) {e!uvz,e
{ ^Xz`hR
processErrorCode(responseCode); 67hPQ/S1
return -2; //-2 represent access is error AF{7<v>/P
} IDVY2`sM
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String sHeader; lQ(BEv"2G[
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for(int i=1;;i++) "=0lcbC
{ .$T:n[@
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Yk*57&QI
//Utility.log(in.readLine()); 0OoO cc
sHeader=httpConnection.getHeaderFieldKey(i); ^#6%*(D
if(sHeader!=null) =Z$=-\<x0.
{ kA9 X!)2w
if(sHeader.equals("Content-Length")) \Q
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{ qS`|=5f
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); F(kRAe;
break; 26klW:2*
}
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} DcvmeGl
else ():?FJM
break; 5In8VE
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} GzE3B';g
} vdX~E97
catch(IOException e){e.printStackTrace ();} (YWc%f4
catch(Exception e){e.printStackTrace ();} -X[8 soz
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Utility.log(nFileLength); jgfP|oD
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return nFileLength; X9BBnZ
} U=<.P;+f9
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//保存下载信息(文件指针位置) e, 3(i!47
private void write_nPos() *,=+R$
{ ;<ma K*f\S
try{ d+| !6
output = new DataOutputStream(new FileOutputStream(tmpFile)); +!Gr`&w*)
output.writeInt(nStartPos.length); \:)o'-
for(int i=0;i<nStartPos.length;i++) >"My\o
{ !/lYq;$R
// output.writeLong(nPos); o_^d>Klb8
output.writeLong(fileSplitterFetch.nStartPos); af5`ktx
output.writeLong(fileSplitterFetch.nEndPos); _=M'KCL*)
} sYW)h$p;D
output.close(); 4Xho0lO&
} wjGjVTtHs
catch(IOException e){e.printStackTrace ();} HC`3AQ12!&
catch(Exception e){e.printStackTrace ();} ,(Hmk(,
} .2- JV0
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//读取保存的下载信息(文件指针位置) VX@G}3Ck
private void read_nPos() -{sv3|P>
{ NqfDY
try{ *"bp}3$^^
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Y{:/vOj
int nCount = input.readInt(); = 8e8!8
nStartPos = new long[nCount]; T7_ SO,X
nEndPos = new long[nCount]; tcdn"]#U
for(int i=0;i<nStartPos.length;i++) ^%/5-0?xE
{ aI#n+PW
nStartPos = input.readLong(); 'ah0IYe
nEndPos = input.readLong(); ' /* rCB
} =
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input.close(); J^a"1|
} sWCm[HpG
catch(IOException e){e.printStackTrace ();} [<I
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catch(Exception e){e.printStackTrace ();} zi&d
} g#2X'%&+
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private void processErrorCode(int nErrorCode) ]|BSX-V.%i
{ 5K-)X9z?
System.err.println("Error Code : " + nErrorCode); )CTM
} e*Med)tc^$
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//停止文件下载 xa*gQ%+F
public void siteStop() nAC#_\
{ ASU\O3%%
bStop = true; `GWq3c5
for(int i=0;i<nStartPos.length;i++) >^ar$T;Ys
fileSplitterFetch.splitterStop(); R}26 "+~
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} 1iW9?=a"
} >Ga1p'8FtU
//负责部分文件的抓取 y5D?Bg|M
**FileSplitterFetch.java Cb-E<W&2D
*/ odn`%ok
package NetFox; qP'g}Pc
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import java.io.*; TAoR6aE
import java.net.*; z$5C(! )
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public class FileSplitterFetch extends Thread { E\N=p&g$
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String sURL; //File URL ?0%TE\I8
long nStartPos; //File Snippet Start Position 0l@+xS;
long nEndPos; //File Snippet End Position lM%fgyX
int nThreadID; //Thread's ID -B(K Q T,J
boolean bDownOver = false; //Downing is over >D#}B1(!
boolean bStop = false; //Stop identical X1dG'PQ
FileAccessI fileAccessI = null; //File Access interface GP'Y!cl
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException :J-5Q]#
{ ~B\:
this.sURL = sURL; HwuPjc#
this.nStartPos = nStart; %.U{):lNx
this.nEndPos = nEnd; {3Wc<&D
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nThreadID = id; k4rBS
fileAccessI = new FileAccessI(sName,nStartPos);//定位 93DBZqN
} ,RO(k4
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public void run() T+D]bfjr&&
{ <~+
while(nStartPos < nEndPos && !bStop) N+75wtLy&
{ &/?jMyD@
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try{ rv%[?Ml
URL url = new URL(sURL); 2f4c;YS
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); lHqx}n@e
httpConnection.setRequestProperty("User-Agent","NetFox"); jy2nn:1#^
String sProperty = "bytes="+nStartPos+"-"; +}/!yQtH
httpConnection.setRequestProperty("RANGE",sProperty); 59]9-1" +
Utility.log(sProperty); W10fjMC}^
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InputStream input = httpConnection.getInputStream(); ~Xw?>&
//logResponseHead(httpConnection); D|:sSld @
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byte[] b = new byte[1024]; #Q7$I.O]
int nRead; N
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 6Qu*'
{ FM[To
nStartPos += fileAccessI.write(b,0,nRead); RY<b]|
//if(nThreadID == 1) Uk6!Sb
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); )&Bv\Tfjt
} j}l8k@f
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Utility.log("Thread " + nThreadID + " is over!"); w'XgW0j{
bDownOver = true; efR$s{n!
//nPos = fileAccessI.write (b,0,nRead); NM.B=<Aw*
} `1]9(xwhQ0
catch(Exception e){e.printStackTrace ();} fk1f'M)/8
} >t(@?*ZFT
}
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//打印回应的头信息 Q$j48,e
public void logResponseHead(HttpURLConnection con) c"1d#8J
{ @D=`iG%
for(int i=1;;i++) hh&y2#Io
{ 5zOSb$;
String header=con.getHeaderFieldKey(i); B,,d~\
if(header!=null) >,Z{wxzJ
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Ao$z)<d'
Utility.log(header+" : "+con.getHeaderField(header)); [^~9wFNtd
else G1tp
break; !k9h6/b6
} 2s%M,Nb
} NhX.yLb$
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public void splitterStop() IOl"Xgn5
{ 7gcG|kKT
bStop = true; ze N!*VG
} O]eJQ4XN<
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} FoCkTp+/
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/* 7!wnx.
**FileAccess.java 8Oh3iO
*//文件访问(定位,写) 3HR]T Q%r
package NetFox; QPE.b-S
import java.io.*; `wd* &vl