/* }\\KYyjY
**SiteFileFetch.java mID"^NOi#
*/ H!5\v"]WB
package NetFox; 95A1:A^t
import java.io.*; E\as@pqo\p
import java.net.*; /OLFcxEWh
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public class SiteFileFetch extends Thread { MvK !u
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SiteInfoBean siteInfoBean = null; //文件信息Bean bpH^:fyLU`
long[] nStartPos; //开始位置 "alyfyBu'M
long[] nEndPos; //结束位置 x4;"!Kq\
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ?[g=F <r
long nFileLength; //文件长度 "Zl5<
boolean bFirst = true; //是否第一次取文件 fI{&#~f4C
boolean bStop = false; //停止标志 5,_u/5Y4
File tmpFile; //文件下载的临时信息 IsZHelg
DataOutputStream output; //输出到文件的输出流 . 1KhBgy^K
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) oSyyd
public SiteFileFetch(SiteInfoBean bean) throws IOException YwDbPX
{ ADDSCY=,
siteInfoBean = bean; ++6`sMJ
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); pEBM3r!X
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); (tIo:j
if(tmpFile.exists ()) i;/5Y'KZ
{ xJ>fm%{5
bFirst = false; f&BY/ n,
read_nPos(); Fl kcU
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} 9 7GV2]-M
else YG3J$_?y0
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nStartPos = new long[bean.getNSplitter()]; /fZeWU0W
nEndPos = new long[bean.getNSplitter()]; o4m\~as)Y
} k5:G-BQ:
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public void run() cq}EZ@ .
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//获得文件长度 .
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//分割文件 =Je[c,&j$?
//实例FileSplitterFetch tnH2sHby
//启动FileSplitterFetch线程 $*e2YQdLo
//等待子线程返回 `UD/}j@
try{ /|tJ6T1LrB
if(bFirst) AK'[c+2[
{ Fq|Ni$
nFileLength = getFileSize(); B:'J`M"N
if(nFileLength == -1) 41`n1:-]
{ ZCmgs4W!
System.err.println("File Length is not known!"); LAB=Vp1y3[
} ,?>s>bHV
else if(nFileLength == -2) iiT"5`KY
{ >/l? g5{
System.err.println("File is not access!"); i,>khc
} K#6P}tf
else &J[:awQX
{ 63\/ *
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for(int i=0;i<nStartPos.length;i++) %zG;Q@
{ w65K[l;2
nStartPos = (long)(i*(nFileLength/nStartPos.length)); K2TcOFQ
} J] {QB^?
for(int i=0;i<nEndPos.length-1;i++) ]^h]t~
{ Uwf+
nEndPos = nStartPos[i+1]; yv t.
} ]A~WIF
nEndPos[nEndPos.length-1] = nFileLength; >V-A;S:
} [@VP?74
} */sS`/Lx
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//启动子线程 IwQ"eUnK
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; eD,.~Y#?=
for(int i=0;i<nStartPos.length;i++) _zY#U9
{ FHj"
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fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ur)9x^y
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Of*Pw[vD
nStartPos,nEndPos,i); &S~zNl^m
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); z* ^_)Z
fileSplitterFetch.start(); wH>a~C:
} VCV"S>aVf
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Q-_N2W?
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); l3Xfc2~ 2
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Sc\*W0m
nEndPos = " + nFileLength); u(@$a4z
// fileSplitterFetch[nPos.length-1].start(); $ `ov4W
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//等待子线程结束
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//int count = 0; mWoAO@}Y
//是否结束while循环 o}
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boolean breakWhile = false; ]D?"aX'q>
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while(!bStop) |n2qVR,
{ PQy4{0 _
write_nPos(); -.1y(k^4E
Utility.sleep(500); '*K :
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breakWhile = true; Bal$+S
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for(int i=0;i<nStartPos.length;i++) ^yW L,$
{ 6</xL9#/
if(!fileSplitterFetch.bDownOver) zBCtd1Xrni
{ A
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breakWhile = false; /a{la8Ni
break; * aN
} ,k24w7K%d
} YN/|$sMD|
if(breakWhile) &Y!-%{e
break; ?M8dP%&r
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//count++; ^H~h\,;zQ
//if(count>4) fY{1F
// siteStop();
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} K18}W*$
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System.err.println("文件下载结束!"); 6c}h(TkB
} "H7dft/
catch(Exception e){e.printStackTrace ();} ,BH@j%Jmy
} z6U\axO6
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//获得文件长度 @P#N2:jwj
public long getFileSize() '}9x\3E
{ hpHr\g
int nFileLength = -1; #*D)Q/k
try{ =b%MXT
URL url = new URL(siteInfoBean.getSSiteURL()); 1a?!@g)
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); O9G[j=U
httpConnection.setRequestProperty("User-Agent","NetFox"); qU+t/C.
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int responseCode=httpConnection.getResponseCode(); B;M?,<%FRU
if(responseCode>=400) rA3$3GLQ-
{ Jb0`42
processErrorCode(responseCode); tRs [ YK
return -2; //-2 represent access is error lNz7u:U3
} _tiujP
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String sHeader; RmI]1S_=
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for(int i=1;;i++) 2a-w%
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{ )Lk639r
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); QiQ_bB!\
//Utility.log(in.readLine()); w^?>e;/\
sHeader=httpConnection.getHeaderFieldKey(i); /$ w%Q-p
if(sHeader!=null) Ok|*!!T
{ &:;:"{t}Do
if(sHeader.equals("Content-Length")) @D.}\(
{ &TnS4O
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9Z|jxy
break; rx'RSo#1O
} !`k1:@NZ
} - \5v^l
else Z
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break; ],>@";9u"
} aAZZ8V
} }{,^@xdyW
catch(IOException e){e.printStackTrace ();} FTX=Wyr
catch(Exception e){e.printStackTrace ();} n3T>QgK
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Utility.log(nFileLength); Pj[PIz
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return nFileLength; VEH&&@d
} xmNB29#
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//保存下载信息(文件指针位置) c>,'Y)8
private void write_nPos() c#XXp"7k2
{ FTH|9OP
try{ &SIq2>Q A
output = new DataOutputStream(new FileOutputStream(tmpFile)); Gk.
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output.writeInt(nStartPos.length); |!1Y*|Q%s
for(int i=0;i<nStartPos.length;i++) (jnzT=y
{ &x=.$76
// output.writeLong(nPos); F<ZYh
output.writeLong(fileSplitterFetch.nStartPos); =qoWCmg"&
output.writeLong(fileSplitterFetch.nEndPos); zbXI%
} uX"H4lO~
output.close(); bh s5x
} 1[mXd
catch(IOException e){e.printStackTrace ();} szb_*)k
catch(Exception e){e.printStackTrace ();} i#&z2h-b
} >] qc-{>&
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//读取保存的下载信息(文件指针位置) Hta y-PB }
private void read_nPos() ynmWW^dg
{ <>n0arAn
try{ >Y&N8PHD
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); wc0jhHZO
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int nCount = input.readInt(); IrR7"`.i
nStartPos = new long[nCount]; V8e>l[tH
nEndPos = new long[nCount]; @y e4q.m
for(int i=0;i<nStartPos.length;i++) G[B=>Cy
{ V("{)0~O
nStartPos = input.readLong(); T!-\@PB !
nEndPos = input.readLong(); y>R=`A1b
} 4qN{n#{+]
input.close(); Rh3eLt~|(
} }elc `jj
catch(IOException e){e.printStackTrace ();} ~<P
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catch(Exception e){e.printStackTrace ();} a[v0%W ]u
} 5uGqX"
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private void processErrorCode(int nErrorCode) w:??h4lt
{ IW)()*8;/
System.err.println("Error Code : " + nErrorCode); cec9l65d
} n?oW < &
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//停止文件下载 tN[L@t9#cr
public void siteStop() _geWE0
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{ #m lS}~n
bStop = true; Hh%I0#
for(int i=0;i<nStartPos.length;i++) Jx_cf9{
fileSplitterFetch.splitterStop(); 9lTv
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} Q0$8j-1I
} T`/AY?#
//负责部分文件的抓取 sI43@[
**FileSplitterFetch.java ,V'o4]H
*/ ,4hJT
package NetFox; he#J|p
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import java.io.*; ke{8 ^X~#
import java.net.*; 7t3X)Ah
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public class FileSplitterFetch extends Thread { rI{=WPI&WU
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String sURL; //File URL D,m]CK'
long nStartPos; //File Snippet Start Position ;1#H62Z*
long nEndPos; //File Snippet End Position c@YI;HS_g
int nThreadID; //Thread's ID gep;{G}
boolean bDownOver = false; //Downing is over g6nkZyw
boolean bStop = false; //Stop identical K7$x<5 +)
FileAccessI fileAccessI = null; //File Access interface yZd +^QN
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException |yvQ[U~PQ
{ 2`.cK 3
this.sURL = sURL; hS_6
this.nStartPos = nStart; L%">iQOG#
this.nEndPos = nEnd; P<oehw'>
nThreadID = id; S(QpM.9*
fileAccessI = new FileAccessI(sName,nStartPos);//定位 dCb`xR}
} |
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public void run() %mL-$*
{ YTAmgkF\4
while(nStartPos < nEndPos && !bStop) k")R[)92b?
{ Z/Eb:
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try{ J5*tJoCYS
URL url = new URL(sURL); ckV`OaRw4
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); oV)~@0B&0
httpConnection.setRequestProperty("User-Agent","NetFox"); avjpA?Vz
String sProperty = "bytes="+nStartPos+"-"; aGK?x1_
httpConnection.setRequestProperty("RANGE",sProperty); @*>@AFnf\Z
Utility.log(sProperty); )@N2
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InputStream input = httpConnection.getInputStream(); hp8%.V$f
//logResponseHead(httpConnection); U93}-){m
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byte[] b = new byte[1024]; uC.K<jD%
int nRead; -g)9R%>-
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) UU'|Xz9~
{ pqUCqo!m\
nStartPos += fileAccessI.write(b,0,nRead); `J]fcE%T0R
//if(nThreadID == 1) ttXXy3G#
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); syk!7zfK
} nv)2!mAh\
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Utility.log("Thread " + nThreadID + " is over!"); El<]b7
bDownOver = true; Rfn9s(m
//nPos = fileAccessI.write (b,0,nRead); l6(-I
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} #G|qD
catch(Exception e){e.printStackTrace ();} 7:Ax(El
} ;_8#f%Y#R
} 0 - ><q
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//打印回应的头信息 5'0xz.)!
public void logResponseHead(HttpURLConnection con) X_qf"|i
{ g wz7krUTe
for(int i=1;;i++) rX*H)3F
{ TqNadHQ
String header=con.getHeaderFieldKey(i); b5,x1`#7k
if(header!=null) J~%K_~Li
//responseHeaders.put(header,httpConnection.getHeaderField(header)); XIvn_&d;G
Utility.log(header+" : "+con.getHeaderField(header)); jxiC
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else U;bK!&