/* zP:cE
**SiteFileFetch.java '=E3[0W
*/ { F'Kk\f%:
package NetFox; ?\U!huu
import java.io.*; Wxkx,q?
import java.net.*; Nrah;i+H\o
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public class SiteFileFetch extends Thread { 9D 0dg(
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SiteInfoBean siteInfoBean = null; //文件信息Bean uK("<u|
long[] nStartPos; //开始位置 Aj9Ji"18za
long[] nEndPos; //结束位置 ?f*Q>3S)
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ewuXpv%vwW
long nFileLength; //文件长度 ="%W2
boolean bFirst = true; //是否第一次取文件 `gpQW~*R-;
boolean bStop = false; //停止标志 ExSO|g]%
File tmpFile; //文件下载的临时信息 ZUp\Ep}
DataOutputStream output; //输出到文件的输出流 Y4F6qyP)"
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) z305{B:Y
public SiteFileFetch(SiteInfoBean bean) throws IOException ;' nL:\
{ :s-o0$PlJ
siteInfoBean = bean; EQIUSh)M
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); `p0ypi3hn
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 2 $ !D* <
if(tmpFile.exists ()) wNNB;n`l
{ K9[e>
bFirst = false; 1z*kc)=JF8
read_nPos(); b?Pj< tA
} "BKeot[""p
else Z,c,G2D
{ Eq^uKi
nStartPos = new long[bean.getNSplitter()]; v8/6wy?
nEndPos = new long[bean.getNSplitter()]; TwvAj#j
} LF?P>
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} ?/M_~e.P
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public void run() mxFn7.|r~
{ =q(GHg;'
//获得文件长度 'R9g7,53R
//分割文件 maSgRf[g
//实例FileSplitterFetch J^m<*
//启动FileSplitterFetch线程 sT1&e5`W
//等待子线程返回 ~vgA7E/XV
try{ aF8k/$u
if(bFirst) /}5B&TZ=(3
{ _2hXa!yO
nFileLength = getFileSize(); k$Rnj`*^
if(nFileLength == -1) wU`!B<,j
{ yg;_.4TpIO
System.err.println("File Length is not known!"); k_GP>b\"k
} YCy2 2@C
else if(nFileLength == -2) 8I+d)(:
{ g):]'
System.err.println("File is not access!"); ?Qqd "=k4
} va|rO#.=
else 'GJVWpvUU
{ M R'o{?{e`
for(int i=0;i<nStartPos.length;i++) ~2uh'e3
{ U5/qf8)yO
nStartPos = (long)(i*(nFileLength/nStartPos.length)); uXQ >WI@eF
} ?4z8)E9Ju
for(int i=0;i<nEndPos.length-1;i++) ohc1 ~?3b
{ F6S~$<
nEndPos = nStartPos[i+1]; 4B-yTyO
}
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nEndPos[nEndPos.length-1] = nFileLength; nhdTTap&9
} jN/C'\QL
} Nm]%
}
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//启动子线程 v })Q
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; |G=[5e^s[
for(int i=0;i<nStartPos.length;i++) GlR~%q-jiQ
{ Y/U{Qc\6
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ivrXwZ7jT
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), h ?#@~
nStartPos,nEndPos,i); jB@4b'y
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !rTmR@e$/
fileSplitterFetch.start(); (:\LWJX0=
} (paf2F`~#
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), S7n"3.k
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); yu&Kh4AP
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8SnS~._9
nEndPos = " + nFileLength); oYX{R
// fileSplitterFetch[nPos.length-1].start(); *j*Du+
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+nZRi3yu=
//等待子线程结束 BIWD/|LQ
//int count = 0; qeaA&(|5
//是否结束while循环 QV)}3pW
boolean breakWhile = false; T{ nQjYb?
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while(!bStop) ZKsQ2"8{M
{ DB Xm
write_nPos(); a#R%8)
Utility.sleep(500); m3%ef
breakWhile = true; n` #+L~X
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for(int i=0;i<nStartPos.length;i++) T+BIy|O
{ ^^Bm$9
if(!fileSplitterFetch.bDownOver) NV(fN-L
{ 3#<'[TF00t
breakWhile = false; b#}t:yy
break; G*Ib^;$u
} 0Ts!(b]B
} ;:^ Lv
if(breakWhile) ox
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break; t_Z _!Qy
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//count++; WxDb3l~
//if(count>4) <q1'Li)_R
// siteStop(); &V FjHW
} I<9n(rA
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System.err.println("文件下载结束!"); E.U0qK],
} Flne=ij6g
catch(Exception e){e.printStackTrace ();} p( HyRCH
} 3P3:F2S R
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//获得文件长度 Y)5)s0}
public long getFileSize() U"/yB8!W
{ QQSH +
int nFileLength = -1; D@}St:m}
try{ KWtu,~O_u
URL url = new URL(siteInfoBean.getSSiteURL()); T&mbXMN
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); IMw
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httpConnection.setRequestProperty("User-Agent","NetFox"); CF,8f$:2
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int responseCode=httpConnection.getResponseCode(); .wM:YX'[G
if(responseCode>=400) !k%l+I3J[
{ 4LJ]l:m
processErrorCode(responseCode); zuUQ."#i
return -2; //-2 represent access is error b-,]A2.
} ;K>{_kf
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String sHeader; rL.<Z@-
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for(int i=1;;i++) Zm`'MsgFr
{ C,9)V5!tP2
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); D9e+
//Utility.log(in.readLine()); :h^O{"au^
sHeader=httpConnection.getHeaderFieldKey(i); [vZfH!vLP
if(sHeader!=null) YG-Z.{d5Z
{ T$#FAEz
if(sHeader.equals("Content-Length")) iLjuE)6-$
{ d3\OHkM0^
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); t5I^1u6
break; ',L{CQA?c
} s$js5
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} k,
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else 97['VOh0
break; 6#OL
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} bnAT,v{
} YJ&lB&xH
catch(IOException e){e.printStackTrace ();} <Gb nPG?
catch(Exception e){e.printStackTrace ();} W?SP .-I
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Utility.log(nFileLength); i5ajM,i/K
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return nFileLength; ~ >&I^4
} #Nu%]
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//保存下载信息(文件指针位置) 6ctHL<^
private void write_nPos() J-@o@!o
{ ?/o2#iJx
try{ {m?K2]](
output = new DataOutputStream(new FileOutputStream(tmpFile)); U:s}/to
output.writeInt(nStartPos.length); 5KL9$J9k
for(int i=0;i<nStartPos.length;i++) c^i"}2+
{ 3bT6W,J4T
// output.writeLong(nPos); [0mFy)6
output.writeLong(fileSplitterFetch.nStartPos); @Fm{6^
output.writeLong(fileSplitterFetch.nEndPos); NqQM!B]
} ^8o_Iz)r,
output.close(); B2ek&<I7N
} 0A)
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catch(IOException e){e.printStackTrace ();} Yio>ft&g]
catch(Exception e){e.printStackTrace ();} xI/{)I1f
} v>x {jZkFL
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*"|VNnB
//读取保存的下载信息(文件指针位置) W\ 1bE(AwZ
private void read_nPos() o<C]+Nt,@
{ 3i@ "D
try{ PfwI@%2
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); FgFJ0fo
int nCount = input.readInt(); &=+cov(3
nStartPos = new long[nCount]; ]Ssw32yn
nEndPos = new long[nCount]; +cPE4(d
for(int i=0;i<nStartPos.length;i++) ,7n;|1`
{ >z fq*_
nStartPos = input.readLong(); 4yJ*85e]
nEndPos = input.readLong(); @%I_&!d
} 0?J|C6XM#4
input.close(); E<X{72fb>
} 0)6i~Mg lY
catch(IOException e){e.printStackTrace ();} IGh !d?D
catch(Exception e){e.printStackTrace ();} Z@>=&
} 7G<KrKal
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private void processErrorCode(int nErrorCode) 5 WN`8?
{ #{)r*"%
System.err.println("Error Code : " + nErrorCode); !I~C\$^U
} 0Y38T)k
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//停止文件下载 c&| '3i+
public void siteStop() hJC
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{ L&!g33J&
bStop = true; q 2_N90u
for(int i=0;i<nStartPos.length;i++) &viwo}ls0
fileSplitterFetch.splitterStop(); QoT3;<r}
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} Tdk2436=
} bo~{<UT
//负责部分文件的抓取 ?d>P+).
**FileSplitterFetch.java "2#-xOCO
*/ 2$SofG6D}
package NetFox; i&}zcGC
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import java.io.*; QKUBh-QFK
import java.net.*; uK4'n+_>\
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public class FileSplitterFetch extends Thread { T/WmS?
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String sURL; //File URL +s/N@]5nW
long nStartPos; //File Snippet Start Position AihL>a%
long nEndPos; //File Snippet End Position qmue!Fv#g
int nThreadID; //Thread's ID H/p-YtY
boolean bDownOver = false; //Downing is over
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boolean bStop = false; //Stop identical \CJx=[3(
FileAccessI fileAccessI = null; //File Access interface bCE7hutl
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 7q2"b?|h
{ Zy!)8<Cgm'
this.sURL = sURL; ?sjZ13 SUa
this.nStartPos = nStart; :cmI"Bo
this.nEndPos = nEnd; aCYm$6LmA
nThreadID = id; v0hfY
fileAccessI = new FileAccessI(sName,nStartPos);//定位 w.T=Lzp
} .j:.WnW
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public void run() JXSqtk=
{ )v!lP pe8
while(nStartPos < nEndPos && !bStop) %!HnGwv-
{ SILvqm
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^
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try{ 3w<j:\i
URL url = new URL(sURL); ,SJK
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /n(bThDH
httpConnection.setRequestProperty("User-Agent","NetFox"); fw:^Lyn9$
String sProperty = "bytes="+nStartPos+"-"; \@}$Wjsl
httpConnection.setRequestProperty("RANGE",sProperty); 0r$hPmvv8
Utility.log(sProperty); 4xAlaOw5M
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InputStream input = httpConnection.getInputStream(); O"J.k&C<,
//logResponseHead(httpConnection); "{ry 9?z
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byte[] b = new byte[1024]; mBpsgm:g^
int nRead; 4_m
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ]|$$:e^U9
{ NW4
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nStartPos += fileAccessI.write(b,0,nRead); 2YE]?!
//if(nThreadID == 1) WKrZTPD'm
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 1$!RKqT
} #Z=)=
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Utility.log("Thread " + nThreadID + " is over!"); Am0.c0h
bDownOver = true; gh #w%g1g
//nPos = fileAccessI.write (b,0,nRead); z$BnEd.y=:
} P15* VPy
catch(Exception e){e.printStackTrace ();} |YGiATD4DG
} 18/@:u{
} +&N&D"9A
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//打印回应的头信息 ;&^"q{m
public void logResponseHead(HttpURLConnection con) /6+%(f}7l
{ 9;v"bcQ
for(int i=1;;i++) nog\,NT
{ *r?51*J
String header=con.getHeaderFieldKey(i); + $a:X
if(header!=null) Obc3^pV&
//responseHeaders.put(header,httpConnection.getHeaderField(header)); Ae_ E;[mj
Utility.log(header+" : "+con.getHeaderField(header)); ;gW|qb+#)j
else {O&liU4
break; wpdEI(
} vYt:}$AE
} 9c;lTl^4;
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public void splitterStop() gAUQQ
{
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bStop = true; 645C]l
} y0&HXX#\
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} F+$@3[Q`N
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/* lPN< rgg
**FileAccess.java z3jzpmz
*//文件访问(定位,写) y yR8VO{
package NetFox; _}D?+x,C8
import java.io.*; Dw ;vDK
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public class FileAccessI implements Serializable{ Y6Qb_X:
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 K9M.+d4
RandomAccessFile oSavedFile; .@3u3i64'
long nPos; !BikF4Y1L&
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public FileAccessI() throws IOException u[|S*(P
{ -Us% g
this("",0); U?^|>cMr
} P_g0G#`4
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public FileAccessI(String sName,long nPos) throws IOException =XBXSW8)DJ
{ x-#9i
oSavedFile = new RandomAccessFile(sName,"rw"); Mh.eAM8 _
this.nPos = nPos; #DRtMrfat
oSavedFile.seek(nPos); -*q2Y^A^l
} bfI -!,
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public synchronized int write(byte[] b,int nStart,int nLen) l(#Y8
{ KC-aLq/
int n = -1; kGq f@
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try{ ,L:)ZZgN
oSavedFile.write(b,nStart,nLen); [k=9 +0p
n = nLen; }Z?[Ut
} (l_de)N7
catch(IOException e) r=||sZs
{ rtF6Lg
e.printStackTrace (); <r`Jn49
} >~>[}d;glw
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return n; RF2XJJ
} >,Bu^] C
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} =l'_*B8
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/* GXK?7S0H
**SiteInfoBean.java <~X6D?
*/ +<WT$ddK=5
package NetFox; KR(ftG'
t8N9/DZ}Q
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public class SiteInfoBean { :tG".z
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private String sSiteURL; //Site's URL 1WN93SQ=
private String sFilePath; //Saved File's Path L Hz<=]?@
private String sFileName; //Saved File's Name W}_}<rlF
private int nSplitter; //Count of Splited Downloading File HU+H0S~g
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public SiteInfoBean() 0i`Zy!
{//nSplitter的缺省值为5 +5mkMZ
//default value of nSplitter is 5 CscJy0dB
this("","","",5); qm5pEort
} 1O7ss_E
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Z|dZc wo
{ WA5kX SdIb
sSiteURL= sURL; ;l?(VqX_E
sFilePath = sPath; NS;8&