/* Mi74Xl i
**SiteFileFetch.java AZwa4n}"
*/ oT->^4WY
package NetFox; ^saM$e^c:
import java.io.*; \!w h[qEQ\
import java.net.*; $l"MXxx5I
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public class SiteFileFetch extends Thread { Wk[)+\WQ?
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SiteInfoBean siteInfoBean = null; //文件信息Bean d_T<5Hin
long[] nStartPos; //开始位置 t w!.%_1^
long[] nEndPos; //结束位置 :t>Q:mX(N
FileSplitterFetch[] fileSplitterFetch; //子线程对象 }17bV, t
long nFileLength; //文件长度 4$Pr|gx
boolean bFirst = true; //是否第一次取文件 #!d]PH746
boolean bStop = false; //停止标志 b-nY xd
File tmpFile; //文件下载的临时信息 QUp?i
DataOutputStream output; //输出到文件的输出流 *<kD"m
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) !!+Da>
public SiteFileFetch(SiteInfoBean bean) throws IOException t/ eo]
{ PYieD}'
siteInfoBean = bean; +*a7GttU
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); IJIQ"
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); S'@=3)
if(tmpFile.exists ()) q^6N+ ^}QN
{ Wp4K6x
bFirst = false; *w 21U!
read_nPos(); |EeBSRAfe
} o7arxo\
else @dV9Dpu
{ sVoR?peQ
nStartPos = new long[bean.getNSplitter()]; ;+/NjC1
nEndPos = new long[bean.getNSplitter()]; 1;`Fe":;vC
} CJA+v-
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} YFqZe6g0$
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public void run() (H-cDsh;c
{ {]["6V6W
//获得文件长度 *(nJX.7
//分割文件 +-P<CCvWz
//实例FileSplitterFetch i[_|%'p
//启动FileSplitterFetch线程 o=mo/N4
//等待子线程返回 pK"&QPv
try{ D1ZC&B_}-
if(bFirst) /.v_N%*-v
{ :rL?1"
nFileLength = getFileSize(); uk6g s)qxC
if(nFileLength == -1) %,;gP.dh7
{ %/%gMRXG2
System.err.println("File Length is not known!"); ^S=cNSpC
} ~oFh>9u
else if(nFileLength == -2) eP?~-#
{ +"Ub/[J{G1
System.err.println("File is not access!"); + !xu{2 !
} V4\560
else sDAK\#z
{ k}<<bm*f
for(int i=0;i<nStartPos.length;i++) 2_N/wR#=&
{ en%B>]QI
nStartPos = (long)(i*(nFileLength/nStartPos.length)); J7m`]!*t
} ?\M)WDO
for(int i=0;i<nEndPos.length-1;i++) 0Jg+sUs{
{ SS0_P
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nEndPos = nStartPos[i+1]; J% AG`
} idz9YpW
nEndPos[nEndPos.length-1] = nFileLength; BPiiexTV9
} E[*0Bo]
} 7vq
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//启动子线程 S;h&5.p
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 1x;@~yU
for(int i=0;i<nStartPos.length;i++) ZR6&AiL(Bj
{ %HVD^. V
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), l# BZzJ?~
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), nj"m^PmWo3
nStartPos,nEndPos,i); _j>L4bT
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); h[,XemwX
fileSplitterFetch.start(); Oc~VHT
} H\d;QN9Q;
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), kw#X]`c3
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Kk>DYHZ6y
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", sy=dY@W^
nEndPos = " + nFileLength); U\?+s2I)v
// fileSplitterFetch[nPos.length-1].start(); )WclV~
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//等待子线程结束 Fq4lXlSB
//int count = 0; K?JV]^
//是否结束while循环 UT~4Cfb
boolean breakWhile = false; `xGT_0&ck
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while(!bStop) c`pYc
{ ovSH}h!
write_nPos(); "G@E6{/
Utility.sleep(500);
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breakWhile = true; /wlFD,+8
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for(int i=0;i<nStartPos.length;i++) 5E0w n'
{ D>S8$]^Dm
if(!fileSplitterFetch.bDownOver) '?b\F~$8
{ A`g.[7
breakWhile = false; m'c#uU
break; d#4 Wj0x
} L@+Z)# V
} moe/cO5a9
if(breakWhile) VH[l\I(h
break; ys/vI/e\
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//count++; i!tc
//if(count>4) l*qk1H"g
// siteStop(); w~p4S+k&
} sc9]sIb
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System.err.println("文件下载结束!"); AT-0}9z{
} lqauk)(A0
catch(Exception e){e.printStackTrace ();} =8@RKG`>;
} qA04Vc[2
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//获得文件长度 ]M uF9={
public long getFileSize() K1<k+t/V
{ JLml#Pu4
int nFileLength = -1; u!M&;QL
try{ "7:u0p!
URL url = new URL(siteInfoBean.getSSiteURL()); k,AM]H
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F~%|3a$Y
httpConnection.setRequestProperty("User-Agent","NetFox"); 8cB=}XgYS
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int responseCode=httpConnection.getResponseCode(); J#+Op/mmo
if(responseCode>=400) *Q0lC1GQ
{ BL7>dZOa
processErrorCode(responseCode); 'r6 cVBb}
return -2; //-2 represent access is error xS-w\vbLV
} b#e]1Q
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String sHeader; v [dAywW
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for(int i=1;;i++) 9OH.&g
{ `..EQBM
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); z_'dRw
//Utility.log(in.readLine()); 3Nc'3NPQ'
sHeader=httpConnection.getHeaderFieldKey(i); e5QOB/e&
if(sHeader!=null) $x/J+9Ww
{ 3Sk5I%
if(sHeader.equals("Content-Length")) EkDws`@
{ 9GtLMpy
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); makaI0M
break; U-ERhm>uk
} kja4!_d
} 6V+V
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else Sb^a dd0dT
break; N!]PIWnC
} )8 oEs
} .V7Y2!4TE
catch(IOException e){e.printStackTrace ();} <1TlW
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catch(Exception e){e.printStackTrace ();} !,I7 ?O
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Utility.log(nFileLength); b!0'Qidh0
}#1UD
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return nFileLength; K3j_C`Se
} "4KkKi
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//保存下载信息(文件指针位置) l#
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private void write_nPos() :P HUsy
{ `^?}s-H+
try{ )Uc$t${en
output = new DataOutputStream(new FileOutputStream(tmpFile)); !."Izz/
output.writeInt(nStartPos.length); ]r"31.w(
for(int i=0;i<nStartPos.length;i++) h<+PP]l=
{ qn5yD!1
// output.writeLong(nPos); @?'t@P:4
output.writeLong(fileSplitterFetch.nStartPos); >fW+AEt\JB
output.writeLong(fileSplitterFetch.nEndPos); JHnk%h0
} #(m`2Z`H
output.close(); [lmHXf@1C
} vx({N?
catch(IOException e){e.printStackTrace ();} d4b 9rtM
catch(Exception e){e.printStackTrace ();} Pn~pej5'K
} 8XLxT(YFIs
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//读取保存的下载信息(文件指针位置) :!r9 =N9
private void read_nPos() Bu*W1w\
{ AGw1Pl8]K
try{ EGp~Vo-
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); WZfk}To1#
int nCount = input.readInt(); nXx6L!H J#
nStartPos = new long[nCount]; p~,a=
nEndPos = new long[nCount]; v!WU |=u
for(int i=0;i<nStartPos.length;i++) QC$=Fs5+
{ W;xW:
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nStartPos = input.readLong(); SSl8
nEndPos = input.readLong(); ]2hF!{wc
} )$2%&9b
input.close(); ]#vvlM>/
} 2+c>O%L
catch(IOException e){e.printStackTrace ();} M Ak-=?t
catch(Exception e){e.printStackTrace ();} /vFxVBX
} {hkM*:U
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private void processErrorCode(int nErrorCode) Co{MIuL
{ pko!{,c
System.err.println("Error Code : " + nErrorCode); ,mAB)at
} )R
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//停止文件下载 |G`4"``]k
public void siteStop() *7:u-}c!
{ gJ)h9e*m^
bStop = true; 'sT}DX(7M
for(int i=0;i<nStartPos.length;i++) $@+p~ )r(l
fileSplitterFetch.splitterStop(); >Hd~Ca>
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} 3B!&ow<rt
} N}.Q%&6:
//负责部分文件的抓取 sRo<4U0M;l
**FileSplitterFetch.java C,sD?PcSi+
*/ 2n-Tpay0
package NetFox; bc0)'a\
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import java.io.*; (hRgYwUa<
import java.net.*; >#"jfjDuR
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public class FileSplitterFetch extends Thread { Mipm&5R
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String sURL; //File URL $ ufSNx(F
long nStartPos; //File Snippet Start Position 9H
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long nEndPos; //File Snippet End Position Q
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int nThreadID; //Thread's ID d[P>jl%7
boolean bDownOver = false; //Downing is over e4>L@7
boolean bStop = false; //Stop identical IGF37';;
FileAccessI fileAccessI = null; //File Access interface vV:MS O'r
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException >[E|p6jgT
{ ei|*s+OZu
this.sURL = sURL;
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this.nStartPos = nStart; kMJQeo79
this.nEndPos = nEnd; fY,@2VxyfA
nThreadID = id; OI]K_ m3
fileAccessI = new FileAccessI(sName,nStartPos);//定位 LS2ek*FJO
} 61s2bt#
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public void run() rlUdAa3
{ K[ Egwk7
while(nStartPos < nEndPos && !bStop) <x>k3bD
{ 5m%baf2_
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try{ u75)>^:I
URL url = new URL(sURL); <L!~f`nH2
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); pdcwq~4~%
httpConnection.setRequestProperty("User-Agent","NetFox"); CL<KBmW7
String sProperty = "bytes="+nStartPos+"-"; ,XBV }y
httpConnection.setRequestProperty("RANGE",sProperty); Dbkuh!R
Utility.log(sProperty); sBuq
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InputStream input = httpConnection.getInputStream(); ]\os`At
//logResponseHead(httpConnection); QU,TAO
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byte[] b = new byte[1024]; Hq"<vp
int nRead; KHc/x8^9
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) "[".3V
{ Cr
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nStartPos += fileAccessI.write(b,0,nRead); ~\@<8@N2a6
//if(nThreadID == 1) :}3qZX
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^*?B)D =,
} wE8a4.
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Utility.log("Thread " + nThreadID + " is over!"); \$~oH3m&
bDownOver = true; D?*sdm9r`
//nPos = fileAccessI.write (b,0,nRead); wTMHoU*>
} G|6 |;
catch(Exception e){e.printStackTrace ();} eB/hyC1
} W_f"Gk
} "6*Kgf2G
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//打印回应的头信息 J:mu%N`
public void logResponseHead(HttpURLConnection con) (fk, 80
{ 1VyO?KX'
for(int i=1;;i++) G4iLCcjY
{ n%MYX'0
String header=con.getHeaderFieldKey(i); !EmR (x
if(header!=null) EB3o8
//responseHeaders.put(header,httpConnection.getHeaderField(header)); ]RrP !|^
Utility.log(header+" : "+con.getHeaderField(header)); _G}CD|Kx
else }r<@o3t
break; \Q?|gfJH
} M\.T 0M_
} [nPzhXs
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public void splitterStop() =Q=&Ucf_
{ fFTvf0j
bStop = true; B,m$ur#$
} GZhfA ;O,
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} TLL[F;uZ
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/* E_gDwWot
**FileAccess.java LN3dp?;_{
*//文件访问(定位,写) divZJc
package NetFox; ]x(2}h^S
import java.io.*; z:Zn.e*$b
* /Ry6Yu
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public class FileAccessI implements Serializable{ hC 4X Y
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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 8|-mzb&
RandomAccessFile oSavedFile; fe9& V2Uu
long nPos; Qpv}N*v^
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public FileAccessI() throws IOException =*>4Gh
i
{ &F*QYz[
this("",0); 1PTu3o&3
} ~
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public FileAccessI(String sName,long nPos) throws IOException d
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{ $E_vCB_
oSavedFile = new RandomAccessFile(sName,"rw"); g(Xg%&@KZ
this.nPos = nPos; r5qx! >
oSavedFile.seek(nPos);
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} ]pP2c[;
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public synchronized int write(byte[] b,int nStart,int nLen) d|?(c~
{ >8fz ?A
int n = -1; L9YwOSb.
try{ k| cI!
oSavedFile.write(b,nStart,nLen); .5CELtR
n = nLen; #M9D"
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} #m$% S%s
catch(IOException e) K,,@',
{ ,JBw$C
e.printStackTrace (); [dF=1E>W_J
} w{O3P"N2
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return n; *u4X<oBS*
} #|_UA}Y
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} 68GGS`&
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/* Y&