/* SsQg8d
**SiteFileFetch.java AR7]~+X
*/ "[\),7&03
package NetFox; yn.f?[G2
import java.io.*; "j?\Ze*
import java.net.*; 1ika'
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public class SiteFileFetch extends Thread { ZGQz@H5
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SiteInfoBean siteInfoBean = null; //文件信息Bean 9M1 UkS$`@
long[] nStartPos; //开始位置 I.u[9CI7HU
long[] nEndPos; //结束位置 ++Fk8R/$U[
FileSplitterFetch[] fileSplitterFetch; //子线程对象 /@+[D{_Fw
long nFileLength; //文件长度 @;h$!w<
boolean bFirst = true; //是否第一次取文件 YB"=eld
boolean bStop = false; //停止标志 9Vtn62+
File tmpFile; //文件下载的临时信息 c_FnJ_+ +f
DataOutputStream output; //输出到文件的输出流 4>t=r\"4
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) |TCg`ZS`cZ
public SiteFileFetch(SiteInfoBean bean) throws IOException [K"&1h<>
{ e\'=#Hw
siteInfoBean = bean; ) (l=_[1Z5
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 70yM]C^
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 0'~Iv\s
if(tmpFile.exists ()) &,C;_3
{ X"O^4MnvI
bFirst = false; 3Tz~DdB
read_nPos(); <,I]=+A
} M 3c
else +/DT#}JE
{ s!WI:E7
nStartPos = new long[bean.getNSplitter()]; l$3YJ.n|s~
nEndPos = new long[bean.getNSplitter()]; $gysy!2}.
} SB=%(]S
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} s[#ww
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public void run() IhPX/P
{ OzS/J;[PO[
//获得文件长度 *{s
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//分割文件 A7=k9|
//实例FileSplitterFetch R>dd#`r"
//启动FileSplitterFetch线程 a F%V
//等待子线程返回 !TeI Jm/l
try{ dI)
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if(bFirst) 4$_:a?9
{ ^Bu55q
nFileLength = getFileSize(); J0,;F9<C#X
if(nFileLength == -1) )|j?aVqZ
{ pW1(1M)[%Z
System.err.println("File Length is not known!"); )T!3du:M
} D);w)`
else if(nFileLength == -2) 10W6wIqK
{ 5;q{9wvqO
System.err.println("File is not access!"); =uD^#AX
} V3q[ #.o
else )k6kK}
{ sG8G}f
for(int i=0;i<nStartPos.length;i++) l-<EG9m@
{ $#/f+kble
nStartPos = (long)(i*(nFileLength/nStartPos.length)); f&NXWo/
} XWv;l)
for(int i=0;i<nEndPos.length-1;i++) D'<'"kUd
{
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nEndPos = nStartPos[i+1]; nD\H$5>5
}
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nEndPos[nEndPos.length-1] = nFileLength; h"t\x}8qq
} { {@*
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//启动子线程 l'
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ?3a:ntX h
for(int i=0;i<nStartPos.length;i++) }0idFotck
{ hD9b2KZv
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ciGJtD&P
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), jchq\q)_z
nStartPos,nEndPos,i); jj6yf.r6c
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7mtX/w9
fileSplitterFetch.start(); RJ OW#e :
} 9A ?)n<3d
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :s>x~t8g#n
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); BV=~!tsl
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", qrufnu5cC
nEndPos = " + nFileLength); 52t6_!y+V
// fileSplitterFetch[nPos.length-1].start(); lb\VQZp!y
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//等待子线程结束 ~Xz?H=}U+
//int count = 0; ~|( eh9
//是否结束while循环 KvXFzx|A
boolean breakWhile = false; vp(ow]Q
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while(!bStop) (!%9#
{ uYC1}Y5N
write_nPos(); CaR-Yk
Utility.sleep(500); ;b!qt-;.<
breakWhile = true; V6Y0#sTU
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for(int i=0;i<nStartPos.length;i++) Z}S7%m
{ L}6!D zl
if(!fileSplitterFetch.bDownOver) _$i)bJ
{ 0+F--E4
breakWhile = false; Q2[;H!"
break; 5GbC}y>
} 0ZJj5<U
} ; Vpp1mk|
if(breakWhile) iFnD`l6)
break; P1ak>T*#2
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//count++; 0+e
//if(count>4) J4u>77I
// siteStop();
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} r1:CHIwK
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System.err.println("文件下载结束!"); 6V*,nocL_+
} SEVB.;
catch(Exception e){e.printStackTrace ();} <~P!yL r
} R3%%;` c=
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//获得文件长度 ;Y0M]pC
public long getFileSize() 5Dzf[V^]`
{ sNM ]bei
int nFileLength = -1; D -d
try{ O_]hbXV0
URL url = new URL(siteInfoBean.getSSiteURL()); i%[+C
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Q[?R{w6
httpConnection.setRequestProperty("User-Agent","NetFox"); )F Nn
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int responseCode=httpConnection.getResponseCode(); hQ'W7EF
if(responseCode>=400) GUZ.Pw
{ %z=:P{0UQ
processErrorCode(responseCode); V~p01f"J
return -2; //-2 represent access is error `mA;1S
} Tdm|=xI
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String sHeader; e9HL)=YP
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for(int i=1;;i++) &>]U c%JK
{ }0tHzw=#%e
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9!FU,4 X
//Utility.log(in.readLine()); xy
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sHeader=httpConnection.getHeaderFieldKey(i); "{ \xBX~oM
if(sHeader!=null) qYJ<I'Ux O
{ ptrwZ8'
if(sHeader.equals("Content-Length")) ?dbSm3
{ } C:i0Q
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 4\5i}MIS0
break; AwjXY,2
} :9av]Yv&
} rZ|p{ym
else GcDA0%i
break; kDDC@A $
} 2Z%n
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} _ xTpW
catch(IOException e){e.printStackTrace ();} 9!(%Vf>
catch(Exception e){e.printStackTrace ();} wN58uV '
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Utility.log(nFileLength); kmX9)TMVO
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return nFileLength; !^&VZh
} D =mmBo
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//保存下载信息(文件指针位置) rJkJ/9s
private void write_nPos() %~x?C4L8
{ zWhj>Za
try{ 5{oc
output = new DataOutputStream(new FileOutputStream(tmpFile)); ,}&TZkN{-
output.writeInt(nStartPos.length);
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for(int i=0;i<nStartPos.length;i++) NXFi*
{ g(9* !g
// output.writeLong(nPos); w2UEU5%
output.writeLong(fileSplitterFetch.nStartPos); Yj1|]i5b
output.writeLong(fileSplitterFetch.nEndPos); xYCJO(&
} n0T|U
output.close(); in/~' u
} SMD*9&,
catch(IOException e){e.printStackTrace ();} JJ7A`
;
catch(Exception e){e.printStackTrace ();} NI#]#yM+
} d\nXK#)Q
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//读取保存的下载信息(文件指针位置) d}zh.O5P!
private void read_nPos() rAfz?
{ Rlk3AWl2u
try{ babL.Ua8o
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); +1YEOOfVY
int nCount = input.readInt(); l;0([_>*j
nStartPos = new long[nCount]; ;W|NG3_y
nEndPos = new long[nCount]; sWte&
for(int i=0;i<nStartPos.length;i++) Lm~<BBp.
{ 0S$k;q
nStartPos = input.readLong(); G9^`cTvv'8
nEndPos = input.readLong(); d/
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} G|KA!q
input.close(); K~vJ/9"|R
} cVW7I
catch(IOException e){e.printStackTrace ();} qsp.`9!
catch(Exception e){e.printStackTrace ();} wDh]vH[
} V^n6~O
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private void processErrorCode(int nErrorCode)
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{ m%`YAD@2z
System.err.println("Error Code : " + nErrorCode); >-I <`y-H
} cl4z%qv*
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//停止文件下载 XQ}J4J~Vm
public void siteStop() iVn4eLK^v
{ ;7z6B|8
bStop = true; +Pb:<WT}%
for(int i=0;i<nStartPos.length;i++) ]6^<VC`5D
fileSplitterFetch.splitterStop(); F]yB=
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} N9_* {HOy
} d j\Z}[
//负责部分文件的抓取 iibG$?(
**FileSplitterFetch.java _GG\SWm
*/ q k^FyZ<
package NetFox; d-_V*rYU
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import java.io.*; /%& d:
import java.net.*; ~gd#cL%
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public class FileSplitterFetch extends Thread { XG.[C>
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String sURL; //File URL hi[nUG(OI
long nStartPos; //File Snippet Start Position 8<C*D".T$
long nEndPos; //File Snippet End Position "V>}-G&
int nThreadID; //Thread's ID |X8?B=
boolean bDownOver = false; //Downing is over 1p.c6[9-
boolean bStop = false; //Stop identical |ky40[C
FileAccessI fileAccessI = null; //File Access interface NbU`_^oC
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException T o["o!(;z
{ \ZLi Y
this.sURL = sURL; }i~k:kmV
this.nStartPos = nStart; (I}owr 5:
this.nEndPos = nEnd; xx`YBn~"
nThreadID = id; * hs&^G
fileAccessI = new FileAccessI(sName,nStartPos);//定位 OS,!`8cw
} QXZXj#`
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public void run() dxs5woP
{ )*BZo>"
while(nStartPos < nEndPos && !bStop) _Z0 .c@0
{ Nbpn"*L,
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try{ .]vb\NBK7
URL url = new URL(sURL); u8zL[]>
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); oVpZR$
httpConnection.setRequestProperty("User-Agent","NetFox"); o`S``?`^)^
String sProperty = "bytes="+nStartPos+"-"; j?N<40z
httpConnection.setRequestProperty("RANGE",sProperty); {1SsHir>
Utility.log(sProperty); ?y-^Fq|h
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InputStream input = httpConnection.getInputStream(); >N |?>M*
//logResponseHead(httpConnection);
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byte[] b = new byte[1024]; jB?SX
int nRead; f`hZb
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 5C!zEI)
{ ;TJpD0
nStartPos += fileAccessI.write(b,0,nRead); wo0j/4o
//if(nThreadID == 1) zTa5N
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ,JZ>)(@)
} +7gd1^|$e
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Utility.log("Thread " + nThreadID + " is over!"); Jo {:]:
bDownOver = true; c7XBZ%D
//nPos = fileAccessI.write (b,0,nRead); w,p'$WC*
} qLCNANWnd
catch(Exception e){e.printStackTrace ();} QJ XP-
} o.ZR5 `.
} 712nD ?>
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//打印回应的头信息 3mHzOs\jU
public void logResponseHead(HttpURLConnection con) ~X3g_<b_8
{ MZV$YD^S
for(int i=1;;i++) =de'Yy:\-
{ F^.A~{&L
String header=con.getHeaderFieldKey(i); r?/Uu
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if(header!=null) =^KgNQ
//responseHeaders.put(header,httpConnection.getHeaderField(header)); to?! qxn
Utility.log(header+" : "+con.getHeaderField(header)); v@=qVwX
else `6~0W5
break; P PJ^;s
} 76 !LMNf
} xh2r?K@k>
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public void splitterStop() (u &x.J
{ ?y?9;;
bStop = true; tKV,
} /9pxEidVAS
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} zP44
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/* pT|s#-}
**FileAccess.java bo|THS
*//文件访问(定位,写) |*c1S
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package NetFox; xE8?%N U
import java.io.*; _Q1p_sdg
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public class FileAccessI implements Serializable{ GURiW42
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 U
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RandomAccessFile oSavedFile; ?>B?*IK!
long nPos; K) }1;
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public FileAccessI() throws IOException g[(@@TiG
{ BzfR8mD
this("",0); ':(AiD -}
} 5f7id7SI
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public FileAccessI(String sName,long nPos) throws IOException O]tR~a
{ @mCe{r*`
oSavedFile = new RandomAccessFile(sName,"rw"); Kzrd<h]`)
this.nPos = nPos; Br!;Ac&N
oSavedFile.seek(nPos);
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} /Z6lnm7wJ
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public synchronized int write(byte[] b,int nStart,int nLen) <J<"`xKL
{ :XhF:c[.:
int n = -1; ;8^k=8
try{ 1L*[!QT4
oSavedFile.write(b,nStart,nLen); }>6e-]MHfR
n = nLen; xeFx!$3
} S=,czs3N
catch(IOException e) 684& H8
{ hV(^Y)f
e.printStackTrace (); 0;l~B
} ESB^"|9
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return n; !K(
} 08xo_Oysq
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} S'!&,Dxq^
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/* \OVFZ D
**SiteInfoBean.java MAYb.>X#>
*/ yzK<yvN
package NetFox; <XLaJ;j
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public class SiteInfoBean { <OEIG0
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private String sSiteURL; //Site's URL ]B )nN':
private String sFilePath; //Saved File's Path =;-C;gn:w
private String sFileName; //Saved File's Name F{jxs/~
private int nSplitter; //Count of Splited Downloading File i975)_X(
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public SiteInfoBean() t[TM\j0jW
{//nSplitter的缺省值为5 , mz;$z6i
//default value of nSplitter is 5 fJr
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this("","","",5); i6HRG\9nU
} \H .Cmm^I
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 48wt
{ }ex4dhx2M
sSiteURL= sURL; eOb--@~8
sFilePath = sPath; ?w(hPUd!2
sFileName = sName; KD A8x W
this.nSplitter = nSpiltter; n5C,Z!)z
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} Rf0so
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public String getSSiteURL() oIO@#
{ :!s7B|_U
return sSiteURL; [lML^CYQ
} #qVTB@d
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public void setSSiteURL(String value) f#&z