/* hMtf.3S7c
**SiteFileFetch.java ]l8^KX'
*/ tBpC: SG
package NetFox; JU&+c6>
import java.io.*; ~i 7^P9
import java.net.*; Jaz?Ys|S
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public class SiteFileFetch extends Thread { s.8{5jVG
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SiteInfoBean siteInfoBean = null; //文件信息Bean gCyW Vp
long[] nStartPos; //开始位置 6Cp]NbNrq
long[] nEndPos; //结束位置 5ZBKRu
FileSplitterFetch[] fileSplitterFetch; //子线程对象 <tioJG{OT
long nFileLength; //文件长度 r7qh>JrO
boolean bFirst = true; //是否第一次取文件 kBN+4Dr/$
boolean bStop = false; //停止标志 n?V+dC=F}
File tmpFile; //文件下载的临时信息 kwsp9 0)
DataOutputStream output; //输出到文件的输出流 08*v~(T
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类)
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public SiteFileFetch(SiteInfoBean bean) throws IOException iQ"XLrpl
{ f7}*X|_Y
siteInfoBean = bean; )+fh-Ui
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); |ZQ@fmvL/p
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Rn@#d}
if(tmpFile.exists ()) _Zr.ba
{ P~ &$l2
bFirst = false; +]Y,q
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read_nPos(); 8,uB8C9
} +zs4a96[
else H$6`{lx,
{ 3)RsLI9
nStartPos = new long[bean.getNSplitter()]; 3'X.}>o
nEndPos = new long[bean.getNSplitter()]; 4
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} F;>!&[h}G
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} Ox-|JJ=
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public void run() `HBf&Z
{ m?&1yU9
//获得文件长度 )Dz+X9;g+
//分割文件 KSrx[q
//实例FileSplitterFetch n\Lb.}]1~
//启动FileSplitterFetch线程 uDZT_c'Y
//等待子线程返回 c}0@2Vf
try{ x|5k<CiA
if(bFirst) c?@T1h4
{ fS`$'BQ
nFileLength = getFileSize(); +U3m#Y )k
if(nFileLength == -1) RZCq {|L
{ H8On<C=
System.err.println("File Length is not known!"); x_dy~(*
} =3v]gOcO
else if(nFileLength == -2) to$h2#i_
{ 6w@ Ii;
System.err.println("File is not access!"); @n": w2^B
} \0gM o&
else 9U%N@Dq`Z
{ ^) s2$A:L
for(int i=0;i<nStartPos.length;i++) cx0*X*
{ Dmu/RD5X:
nStartPos = (long)(i*(nFileLength/nStartPos.length)); $81*^
} w/ K_B:s
for(int i=0;i<nEndPos.length-1;i++) =i7`ek
{ v@d
nEndPos = nStartPos[i+1]; q')R4=0
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} [2{1b`e
nEndPos[nEndPos.length-1] = nFileLength; Ck|8qUz-
} \R;`zuv
} qhz]Wm P
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//启动子线程 r'*}TM'8
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; yu/`h5&*
for(int i=0;i<nStartPos.length;i++) .?Gd'Lp
{ g'm+/pU)w)
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), #*(td<Cp
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), :B:"NyPA
nStartPos,nEndPos,i); ^~A>8CQOU
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); &sL&\+=<(
fileSplitterFetch.start(); <N9[?g)
} JQ@E>o7_
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?n
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); *NCl fkZ
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CtS l
nEndPos = " + nFileLength); 3z&Fi;<+j
// fileSplitterFetch[nPos.length-1].start(); }dd8N5b
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//等待子线程结束 g #6E|n
//int count = 0; k|H:
//是否结束while循环 WV_.Tiy<
boolean breakWhile = false; k<\$OoOZ
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while(!bStop) 5w@4:$=I
{ sH[ROm
write_nPos(); I]EbodAyZ,
Utility.sleep(500); Y1J=3Y
breakWhile = true; % V8U(z
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for(int i=0;i<nStartPos.length;i++) Xn%pNxUL
{ L|}lccpI
if(!fileSplitterFetch.bDownOver) ~15N7=wCM
{ J\M>33zu
breakWhile = false; h9G RI
break; "pRtczxOgR
} suzZdkMA
} vz7J-CH
if(breakWhile) cZ2kYn8
break; ry` z(f
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//count++; "\o+v|;
//if(count>4) z-.+x3&o @
// siteStop(); m~-K[+ya`D
} 5E zw
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System.err.println("文件下载结束!"); < F.hZGss7
} O4V.11FnW
catch(Exception e){e.printStackTrace ();} j+uLV{~g6
} n4R(.N00
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//获得文件长度 .@@?Pj?)
public long getFileSize() m;GbLncA
{ P;ci9vk
int nFileLength = -1; :lPb.UCY
try{ 2;DuHO1
URL url = new URL(siteInfoBean.getSSiteURL());
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); EkjN{$*
httpConnection.setRequestProperty("User-Agent","NetFox"); rzm:Yx
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int responseCode=httpConnection.getResponseCode(); 5?3Me59
if(responseCode>=400) Vt".%d/`7
{ yl7&5)b#9
processErrorCode(responseCode); mR?5G:W~R
return -2; //-2 represent access is error I uMQ9&
} 2Q/4bJpd
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String sHeader; 4'a=pnE$
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for(int i=1;;i++) ;h*K }U
{ =WyZX 7@R
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -xEXN[\S
//Utility.log(in.readLine()); ymx>i~>7J
sHeader=httpConnection.getHeaderFieldKey(i); 4{rZppm
if(sHeader!=null) 0 yuW*z
{ }%'?p<^M
if(sHeader.equals("Content-Length")) #xQr<p$L6
{ O&4SCVZp
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); JGsx_V1t
break; X[PZg{
} g!?:Ye`5
} T_@K&<
else Sjyoc<Uo
break; {=!b/l;@
} W&&;:Fr
} |"/8XA
catch(IOException e){e.printStackTrace ();} Tgm nG/Z
catch(Exception e){e.printStackTrace ();} )FF>IFHG
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Utility.log(nFileLength); ZniB]k1
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return nFileLength; H%UL%l$
} J'SZ
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//保存下载信息(文件指针位置) E*V`":efS
private void write_nPos() bx{$Y_L+p
{ fPn>v)lN{
try{ / ';0H_
output = new DataOutputStream(new FileOutputStream(tmpFile)); =vDEfO/T
output.writeInt(nStartPos.length); @z4*.S&tz
for(int i=0;i<nStartPos.length;i++) `\T]ej}zvI
{ ]>LhkA@V
// output.writeLong(nPos); 3DiLk=\~
output.writeLong(fileSplitterFetch.nStartPos); !}v=N";c
output.writeLong(fileSplitterFetch.nEndPos); u frW\X
} s%C)t6`9
output.close(); )uj Ex7&c
} /'].lp
catch(IOException e){e.printStackTrace ();} ~$:|VHl
catch(Exception e){e.printStackTrace ();} bJRN;g
} Szq/hv=Q
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//读取保存的下载信息(文件指针位置) iOR_[ y,
private void read_nPos() 3L833zL
{ zLD0RBj7p
try{ 3 Nreqq
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); xy5lE+E_U
int nCount = input.readInt(); tZ=E')!\
nStartPos = new long[nCount]; \m7-rV6r
nEndPos = new long[nCount]; cik!GA
for(int i=0;i<nStartPos.length;i++) $@^pAP
{ 2z6yn?'&L
nStartPos = input.readLong(); K/tRe/t}
nEndPos = input.readLong(); ORyE`h
} Z*y`R
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input.close(); )PG6gZYW
} u.d).da
catch(IOException e){e.printStackTrace ();} C8[&S&<_<
catch(Exception e){e.printStackTrace ();} &Q;sSIc
} Ss~;m']68
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private void processErrorCode(int nErrorCode) =Z P%mW&;}
{ WM| dKF
System.err.println("Error Code : " + nErrorCode); |uqf:V`z:
} #w,Dwy
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//停止文件下载 q*\x0"mS/
public void siteStop() p<TpK )
{ ?]Pmxp
H}
bStop = true; &<wuJ%'>)Z
for(int i=0;i<nStartPos.length;i++) QW$G
fileSplitterFetch.splitterStop(); oFy=-p+C
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} |zQ4u
} P;P%n
//负责部分文件的抓取 %MrWeYd1
**FileSplitterFetch.java 0'V5/W
*/ )2V:
package NetFox; eoai(&o0$
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import java.io.*; 9Wnn'T@Tl
import java.net.*; +?u~APjNN
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public class FileSplitterFetch extends Thread { .q
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String sURL; //File URL Fs{x(_LOr
long nStartPos; //File Snippet Start Position q;<h[b?
long nEndPos; //File Snippet End Position _CW(PsfY
int nThreadID; //Thread's ID _AQb6Nb
boolean bDownOver = false; //Downing is over ]8Q4BW
boolean bStop = false; //Stop identical k 8UO9r[
FileAccessI fileAccessI = null; //File Access interface 1u:
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Svondc
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{ LXbP 2
this.sURL = sURL; t?}zdI(4
this.nStartPos = nStart; Min
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this.nEndPos = nEnd; 7on.4/;M
nThreadID = id; ?Cl%{2omO
fileAccessI = new FileAccessI(sName,nStartPos);//定位 |K.mP4CKY
} Qa.<K{m#?
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public void run() f!s=(H;
{ Zb1<:[
while(nStartPos < nEndPos && !bStop) q:dHC,fO
{ t.laO. 3
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try{ Q^
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URL url = new URL(sURL); B[V+ND'(
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); U<CTubF
httpConnection.setRequestProperty("User-Agent","NetFox"); p1&b!*o- &
String sProperty = "bytes="+nStartPos+"-"; 7g%E`3)"
httpConnection.setRequestProperty("RANGE",sProperty); Z?%zgqTXb
Utility.log(sProperty); `&D|>tiz
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InputStream input = httpConnection.getInputStream(); xYmxc9)2
//logResponseHead(httpConnection); '7+4`E
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byte[] b = new byte[1024]; ^
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int nRead; eu(:`uu
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) pL{U `5S
{ (CsD*U`h
nStartPos += fileAccessI.write(b,0,nRead); p4'G$]#
//if(nThreadID == 1) .u4
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// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #7MUJY+
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} ?)u@Rf9>
#)C[5?{SNq
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Utility.log("Thread " + nThreadID + " is over!"); P%#<I}0C
bDownOver = true; CitDm1DXt/
//nPos = fileAccessI.write (b,0,nRead); Kac' ;1
} ^R# E:3e
catch(Exception e){e.printStackTrace ();} B]uc<`f
} w]]8dz
} jV4\A
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//打印回应的头信息 tE)suU5Y
public void logResponseHead(HttpURLConnection con) /+@p7FqlE
{ jpO7'ivG
for(int i=1;;i++) ,M^ P!
{ MP!d4
String header=con.getHeaderFieldKey(i); nv@8tdrc
if(header!=null) cVv;Jn
//responseHeaders.put(header,httpConnection.getHeaderField(header)); J/[=p<I)
Utility.log(header+" : "+con.getHeaderField(header)); ~v6OsH%vx
else J2'Nd'
break; UFp,a0|
} \lZf<