/* F9
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**SiteFileFetch.java "z{/*uM2<
*/ @P7'MiP]K
package NetFox; (%X *b.n=
import java.io.*; 1kvX#h&V
import java.net.*; FOQ-KP\=,
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public class SiteFileFetch extends Thread { K=N&kda
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SiteInfoBean siteInfoBean = null; //文件信息Bean y||
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long[] nStartPos; //开始位置 9i\RdJv.
long[] nEndPos; //结束位置 R4'.QZ-x
FileSplitterFetch[] fileSplitterFetch; //子线程对象 3+Lwtb}XPF
long nFileLength; //文件长度 Gd
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boolean bFirst = true; //是否第一次取文件 ;\7`G!q
boolean bStop = false; //停止标志 I6^y` 2X
File tmpFile; //文件下载的临时信息 k* C69
DataOutputStream output; //输出到文件的输出流 l$gJ^Wf2gY
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) =3035{\
public SiteFileFetch(SiteInfoBean bean) throws IOException nX (bVT4i
{ }k VC]+
siteInfoBean = bean; }dN\bb{#
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); j\>&]0-Iq
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ".>#Qp%
if(tmpFile.exists ()) BQ6$T&
{ u&l;\w
bFirst = false; `,V&@}&"n
read_nPos(); }ppApJT
} jWUrw
else 9K&$8aD
{ 8'Q+%{?1t
nStartPos = new long[bean.getNSplitter()]; XZOBK^,5^B
nEndPos = new long[bean.getNSplitter()]; C1;uAw?\
} <9]"p2
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} `:iMGqZN
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public void run() <sC(a7i1
{ fQ 9af)d
//获得文件长度 NuO@Nr
//分割文件 DNmC
//实例FileSplitterFetch oc"p5Y3,Os
//启动FileSplitterFetch线程 Zna6-0o
//等待子线程返回 tV=Qt[|@
try{ ?*~
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if(bFirst) | d*<4-:
{ $(62j0mS>
nFileLength = getFileSize(); a0ms9%Y;Q[
if(nFileLength == -1) pss')YP.
{ :7(fBf5
System.err.println("File Length is not known!"); Sqp91[,
} d[h=<?E5
else if(nFileLength == -2) efyEzL
{ ;ab[YMkH
System.err.println("File is not access!"); 5i6Ji(
} j/Kul}Ml\*
else #sU>L=
{ k
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for(int i=0;i<nStartPos.length;i++) 8;qOsV)UDT
{ Oyb9
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); NkUY_rKPb
} F42^Uoaz
for(int i=0;i<nEndPos.length-1;i++) !IJ
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{ 0Y0z7A:
nEndPos = nStartPos[i+1]; IYe[IHny1
} m<n+1
nEndPos[nEndPos.length-1] = nFileLength; s3Bo'hGxG
} hzAuj0-A
} x<t?Yc9
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//启动子线程 <1vogUDW
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; T7qp ({v?Q
for(int i=0;i<nStartPos.length;i++) &kf \[|y
{ R Q8"vF#
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x6aVNH=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), &LV'"2ng8
nStartPos,nEndPos,i); Z&@P<
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); HE*^!2f
fileSplitterFetch.start(); bv7)[,i
} V~Guw[RA
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), g1XpERsSEV
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); JSFNn]z2P
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", *[>{9V
nEndPos = " + nFileLength); ~&,S xQT
// fileSplitterFetch[nPos.length-1].start(); m!INbIh
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//等待子线程结束 nVpDjUpN
//int count = 0; wI7.M
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//是否结束while循环 )[99SM
boolean breakWhile = false; Z2;~{$&M+
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while(!bStop) B|syb!g
{ % M_F/ O
write_nPos(); kJ* N`=
Utility.sleep(500); An]Vx<PD
breakWhile = true; PY CG#U
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for(int i=0;i<nStartPos.length;i++) D!,'}G#
{ P/S ,dhs(
if(!fileSplitterFetch.bDownOver) Nt
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{ shLMj)7!
breakWhile = false; )"Ujx`]4r
break; f!7fz~&Sh
} ./tZ*sP:
} JrxQ.,*i
if(breakWhile) ']!wc8m1"
break; [$6YPM>Ee
. Z`xNp
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//count++; 0{!-h
//if(count>4) /`qQWB5b
// siteStop(); ;Gu(Yoa}y
} }V/iU_)
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System.err.println("文件下载结束!"); ZXj*Vu$_4
} -f'&JwE0=
catch(Exception e){e.printStackTrace ();} 6R2F,b(_
} MO1H?Uhx
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//获得文件长度 uC]c`Ue
public long getFileSize() eiA$) rzy
{ K=4|GZ~p}`
int nFileLength = -1; B%x?VOdBE
try{ [pt U}
URL url = new URL(siteInfoBean.getSSiteURL()); 2L.6!THG
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); y`z?lmV)xM
httpConnection.setRequestProperty("User-Agent","NetFox"); B_@p@6z
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int responseCode=httpConnection.getResponseCode(); cI6Td*vM
if(responseCode>=400) Bi/E{k,
{ tHvP0RxM
processErrorCode(responseCode); Lm^vS u
return -2; //-2 represent access is error | @B|o-
} V2yX;u
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String sHeader; $|@-u0sv
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for(int i=1;;i++) R-k~\vCW
{ vgn,ZcX
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); x9]vhR/av
//Utility.log(in.readLine()); A0ZU #"'/
sHeader=httpConnection.getHeaderFieldKey(i); ihct~y-9W
if(sHeader!=null) ?5[$d{ Gjl
{ !6 kn>447Y
if(sHeader.equals("Content-Length")) &`g^b^i
{ H-%
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); =Q# (2
break; %4wHiCOg
} 2/))Y\~
} 4?_^7(%p
else R<r,&X?m
break; /BS yanro
} M3fTUCR
} Q}^qu6
catch(IOException e){e.printStackTrace ();} I
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catch(Exception e){e.printStackTrace ();} =+VDb5= TV
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Utility.log(nFileLength); (F#2z\$;
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return nFileLength; Kciz^)'Z
} IR8qFWDZ
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//保存下载信息(文件指针位置) 0\1g-kc!v
private void write_nPos() S""F58H n
{ bhKe"#m|S
try{ wEl/s P
output = new DataOutputStream(new FileOutputStream(tmpFile)); B?d+^sz]
output.writeInt(nStartPos.length); ;Yt'$D*CP
for(int i=0;i<nStartPos.length;i++) `@&WELFv{
{ GCrsf
// output.writeLong(nPos); F_iZ|B
output.writeLong(fileSplitterFetch.nStartPos); %YG[?"P'
output.writeLong(fileSplitterFetch.nEndPos); _]< Tv3]RK
} 1,n\Osd
output.close(); ] `;Fc8$
} OFZo"XtF
catch(IOException e){e.printStackTrace ();} *b`1+~p_2
catch(Exception e){e.printStackTrace ();} &<(&u`S
} 'qoaMJxN`
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//读取保存的下载信息(文件指针位置) mW3IR3b
private void read_nPos() =)!~t/
{ ! ^aJS'aq
try{
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DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); q^}iXE~
int nCount = input.readInt(); G,b*Qn5#
nStartPos = new long[nCount]; cj|Urt
nEndPos = new long[nCount]; EiPOY'
for(int i=0;i<nStartPos.length;i++) C jz(-018
{ nKch:g
nStartPos = input.readLong(); 6"2IV
nEndPos = input.readLong(); 8&y#LeM1TT
} W#L/|K!S
input.close(); T9YrB
} QOv@rP/
catch(IOException e){e.printStackTrace ();} 2}9M7Z",2
catch(Exception e){e.printStackTrace ();} As|e=ut(
} [n$6T
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private void processErrorCode(int nErrorCode) ZkF6AF
{ ?V =#x.9
System.err.println("Error Code : " + nErrorCode); PSU}fo
} Bf$`Hf6
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//停止文件下载 2GRv%:rZ
public void siteStop() v+DXs!O{
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bStop = true; K#x|/b'5d
for(int i=0;i<nStartPos.length;i++) WS\Ir-B
fileSplitterFetch.splitterStop(); S3y('
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} l-8rCaq&J
} pE{Ecrc3|
//负责部分文件的抓取 B#o6UO\
**FileSplitterFetch.java $g
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*/ V17!~
package NetFox; Eu[/* t+l
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import java.io.*; Bh65qHQO
import java.net.*; ,HK-mAH
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public class FileSplitterFetch extends Thread { G54`{V4&s
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String sURL; //File URL 7DWGYvv[
long nStartPos; //File Snippet Start Position 8Q73h/3
long nEndPos; //File Snippet End Position 9[:TWvd
int nThreadID; //Thread's ID 5p~hUP]tT
boolean bDownOver = false; //Downing is over SnY{|
boolean bStop = false; //Stop identical sV]I]DR
FileAccessI fileAccessI = null; //File Access interface e_IRF+>
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ULzrJbP'7
{ o`Q.;1(Y'
this.sURL = sURL; uP^u:'VjbH
this.nStartPos = nStart; KESM5p"f
this.nEndPos = nEnd; bv}e[yH
nThreadID = id; E^m;Ab=
fileAccessI = new FileAccessI(sName,nStartPos);//定位 M]SeNYDy
} eaDG7+iS
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public void run() BCh|^Pk
{ ">vi=Tr
while(nStartPos < nEndPos && !bStop) #GzowI'
{ 9u%(9Ae
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try{ !1/F71l DX
URL url = new URL(sURL); m%s:4Z%=
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~re~Ys
httpConnection.setRequestProperty("User-Agent","NetFox"); f'TEua_`
String sProperty = "bytes="+nStartPos+"-"; v4F+^0?
httpConnection.setRequestProperty("RANGE",sProperty); P7$/yBI U
Utility.log(sProperty); dd*p_4;
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InputStream input = httpConnection.getInputStream(); W"&,=wvg2
//logResponseHead(httpConnection); P+DIo7VTX
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byte[] b = new byte[1024]; DTHWL
int nRead; P=Su)c
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) z#2n+hwE
{ |^"0bu"
nStartPos += fileAccessI.write(b,0,nRead); S:1g(f*85
//if(nThreadID == 1) ,(NN)Oj
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); h=B=
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} >~_)2_j
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Utility.log("Thread " + nThreadID + " is over!"); Q"H/RMo-
bDownOver = true; L2OR<3*|Av
//nPos = fileAccessI.write (b,0,nRead); J M`[|"R%
} Rx?ze(
catch(Exception e){e.printStackTrace ();} I
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} my#\(E+
} R[@}Lg7+v
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//打印回应的头信息 LL==2KNUo
public void logResponseHead(HttpURLConnection con) /*MioaQB}p
{ ]'pL*&"X
for(int i=1;;i++)
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{ 8{_lB#<[E
String header=con.getHeaderFieldKey(i); gU1Pb]]
if(header!=null) L@Q+HN
//responseHeaders.put(header,httpConnection.getHeaderField(header)); 8 [D"
Utility.log(header+" : "+con.getHeaderField(header)); qw{`?1[+
else x_r*<?OZ
break; hw(\3h()
} lnRL^ }
} -!}3bl*(7
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public void splitterStop() F~eY'~&H}
{ Q!_d6-*u
bStop = true; (>NZYPw^3
} 6&il>
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} Qxk & J
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/* 5{bc&?"
**FileAccess.java y
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*//文件访问(定位,写) B{*{9!(l9
package NetFox; Gr#3GvL
import java.io.*; (|NC xey
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public class FileAccessI implements Serializable{ 2_y]MXG+%
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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 8QoxU"
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RandomAccessFile oSavedFile; w
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long nPos; A+3SLB
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public FileAccessI() throws IOException D
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{ G? XS-oSv
this("",0); O1bW, n(
} t"Ah]sD
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public FileAccessI(String sName,long nPos) throws IOException ex6R=97uA
{ hzRKv6
oSavedFile = new RandomAccessFile(sName,"rw"); E&eY79
this.nPos = nPos; ;j7G$s9
oSavedFile.seek(nPos); .6xMLo,R
} m uy^>2p
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public synchronized int write(byte[] b,int nStart,int nLen) ixSr*+
{ =*"8N-FU
int n = -1; ]Yw$A
try{ %qiVbm0
oSavedFile.write(b,nStart,nLen); +vaA
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n = nLen; Ikw@B)0}
} t%%()!|)j
catch(IOException e) Q;g7<w17
{ Cs7ol-\)
e.printStackTrace (); X-(4/T+v
} JO+tY[q
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return n;
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} 3%5a&b
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} f:ObI
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/* %^L{K[}
**SiteInfoBean.java w.a9}GC
*/ !*Eu(abD
package NetFox; y<E];ub
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public class SiteInfoBean { _io'8X2K%
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private String sSiteURL; //Site's URL `SsoRPW&$
private String sFilePath; //Saved File's Path 7XK0vKmW3
private String sFileName; //Saved File's Name RYjK4xT?Y/
private int nSplitter; //Count of Splited Downloading File }b&lHr'Uw
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public SiteInfoBean() Z)M
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{//nSplitter的缺省值为5 _eOC,J<-~
//default value of nSplitter is 5 ;=jF9mV.
this("","","",5); V<W;[#"
} xdgAu
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 4,z|hY_*t
{ VMRfDaO9
sSiteURL= sURL; !>n!Q*\(Ov
sFilePath = sPath; b4i=%]v8
sFileName = sName; XPO-u]<