/* EG=Sl~~o
**SiteFileFetch.java T]=r Co
*/ M%kO7>h8
package NetFox; Y1J=3Y
import java.io.*; A"rfZ`
import java.net.*; LpqO{#ZG
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public class SiteFileFetch extends Thread { pj?f?.^
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SiteInfoBean siteInfoBean = null; //文件信息Bean Ls] g
long[] nStartPos; //开始位置 u2?|Ue@[
long[] nEndPos; //结束位置 0p!>JQ]m
FileSplitterFetch[] fileSplitterFetch; //子线程对象 n4#;k=mA
long nFileLength; //文件长度 <
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boolean bFirst = true; //是否第一次取文件 57&b:0`p
boolean bStop = false; //停止标志 S-|)QGxV6
File tmpFile; //文件下载的临时信息 VeQg-#&I
DataOutputStream output; //输出到文件的输出流 vz7J-CH
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 5X:*/FuS@
public SiteFileFetch(SiteInfoBean bean) throws IOException xM&Wgei]10
{ 8;+B*+%@n
siteInfoBean = bean; #kaY0M
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); @dPTk"P
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); K8UP,f2
if(tmpFile.exists ()) %*0^0wz
{ 8Y7Q+p|O
bFirst = false; /q`xCS
read_nPos(); 0p}D(m2B
} 70Wgg ty
else ?1K#dC52#
{ 5jgR4a*_v
nStartPos = new long[bean.getNSplitter()]; #nPQ!NB/
nEndPos = new long[bean.getNSplitter()]; &b%zQ4%d-`
} PC-"gi=h
/*X2c6<d
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} ne_TIwf w-
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public void run() "C{}Z
{ G'ei/Me6{
//获得文件长度 Xy$3VU*
//分割文件 j;-1J_e5
//实例FileSplitterFetch a@UZb
//启动FileSplitterFetch线程 Pu*6"}#~
//等待子线程返回 w.YiO5|y
try{ C8V/UbA
/
if(bFirst) nwF2aRNV
{ 'z%o16F)L
nFileLength = getFileSize(); {_ i\f ]L
if(nFileLength == -1) W;!}#o|%s
{ 5n9B?T8C
System.err.println("File Length is not known!"); ,>0* @2
} _0]S69lp
else if(nFileLength == -2) 3 I@}my1
{ rMLp-aR'
System.err.println("File is not access!"); I uMQ9&
} ~&7MkkftM
else %}Ss,XJ
{ [d1mLJAR
for(int i=0;i<nStartPos.length;i++) j/_s"}m{
{ ]<cK";
nStartPos = (long)(i*(nFileLength/nStartPos.length)); O$&mFL[`
} =WyZX 7@R
for(int i=0;i<nEndPos.length-1;i++) > dI LF
{ #t:S.A@
nEndPos = nStartPos[i+1]; +'I+o5*
} <b`E_
nEndPos[nEndPos.length-1] = nFileLength; M42Ssn)
} iS
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} =/y]d<g
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//启动子线程 4W#vP
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <SgM@0m
for(int i=0;i<nStartPos.length;i++) Vzdh8)Mu\
{ qln3 k`
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >0ph9$
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Lvq>v0|
nStartPos,nEndPos,i); \{Z;:,S
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); E_])E`BJ
fileSplitterFetch.start(); %,6#2X nX%
}
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// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), rV R1wsaL
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); :Q $K<)[
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", sk,ox~0R
nEndPos = " + nFileLength); wsIW
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// fileSplitterFetch[nPos.length-1].start(); s:/8[(A
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//等待子线程结束 \?0&0;5
//int count = 0; yp KUkH/
//是否结束while循环 @z4*.S&tz
boolean breakWhile = false; F)&@P-9+
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while(!bStop) trPAYa}W
{ i'H/ZwU
write_nPos(); 4C<jdv_J
Utility.sleep(500); \Xm,OE_v"
breakWhile = true; M=FxB;v
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for(int i=0;i<nStartPos.length;i++) @kpv{`Y
{ Bg5Wba%NK
if(!fileSplitterFetch.bDownOver) F(k.,0Nc
{ t2F_uCr
breakWhile = false; v0-cd
break; }.3nthgz
} a`&f
} <49K>S9O
if(breakWhile) QMa;Gy
break; R:e<W/P"
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//count++; K/tRe/t}
//if(count>4) 6-yd]("
// siteStop(); "U!AlZ`g
} rai3<_W<
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System.err.println("文件下载结束!"); A'q#I>j`
} TD1 [
catch(Exception e){e.printStackTrace ();} i5Zk_-\#H
} C~nzH,5
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//获得文件长度 LJk@Vy <?
public long getFileSize() S4^vpY
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{ mL{B!Q
int nFileLength = -1; <(-= 'QA
try{ $FlW1E j
URL url = new URL(siteInfoBean.getSSiteURL()); 'oF%,4 !Y
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); As 3.Q(#Z
httpConnection.setRequestProperty("User-Agent","NetFox"); l)Pu2!Ic
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int responseCode=httpConnection.getResponseCode(); QW$G
if(responseCode>=400) oFy=-p+C
{ `tHvD=`m.
processErrorCode(responseCode);
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return -2; //-2 represent access is error |zQ4u
} P;P%n
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String sHeader; J?Ra bYd ~
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for(int i=1;;i++) !n*
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{ 9Wnn'T@Tl
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +?u~APjNN
//Utility.log(in.readLine()); q#vQv5
sHeader=httpConnection.getHeaderFieldKey(i); ]bj&bk#
if(sHeader!=null) .q
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{ Xe<sJ.&Wf
if(sHeader.equals("Content-Length")) ]$Yvj!K*Q
{ Fs{x(_LOr
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); q;<h[b?
break; _CW(PsfY
} :uWw8`
} v}1QH
else ]8Q4BW
break; k 8UO9r[
} 1u:
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} 6^]!gR#B
catch(IOException e){e.printStackTrace ();} E"+QJ~!
catch(Exception e){e.printStackTrace ();} Svondc
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Utility.log(nFileLength); ^.1c{0Y^0
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return nFileLength; |K.mP4CKY
} Qa.<K{m#?
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//保存下载信息(文件指针位置) [x9KVd ^d
private void write_nPos() 1+9W+$=h2
{ POvP]G9'"
try{ Z8rvWH9
output = new DataOutputStream(new FileOutputStream(tmpFile)); clNkph
output.writeInt(nStartPos.length); R{ a"Y$
for(int i=0;i<nStartPos.length;i++) Q^
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{ B[V+ND'(
// output.writeLong(nPos); U<CTubF
output.writeLong(fileSplitterFetch.nStartPos); p1&b!*o- &
output.writeLong(fileSplitterFetch.nEndPos); 7g%E`3)"
} Z?%zgqTXb
output.close(); `&D|>tiz
} GM3f-\/
catch(IOException e){e.printStackTrace ();} cm?\
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catch(Exception e){e.printStackTrace ();} ~ ip,Nl
} S-k8jm
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//读取保存的下载信息(文件指针位置) bsB*533
private void read_nPos() :/Q
{ \~fONBY
try{ rcMwFE?|xq
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); +n#V[~~8AI
int nCount = input.readInt(); $e*ce94
nStartPos = new long[nCount]; m|{3),#V
nEndPos = new long[nCount]; ~C>?W[Y
for(int i=0;i<nStartPos.length;i++) TNGU6j}oq
{ BsEF'h'Owh
nStartPos = input.readLong(); hS)'a^FV
nEndPos = input.readLong(); huJ&]"C
} jg.QRny^
input.close(); Y8o)FVcyNy
} KU8Jbl*
catch(IOException e){e.printStackTrace ();} E=>FjCsu<-
catch(Exception e){e.printStackTrace ();} .ox8*OO<
} %d?cP}V
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private void processErrorCode(int nErrorCode) qWODs
{ Z@3i$8
System.err.println("Error Code : " + nErrorCode); ynE)Xdh
} kP-3"ACG
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//停止文件下载
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public void siteStop() h&--,A >
{ /(iFcMT
bStop = true; =zKhz8B(
for(int i=0;i<nStartPos.length;i++) ApAO/q
fileSplitterFetch.splitterStop(); :E:38q,hG
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} H[S%J3JI
} n
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//负责部分文件的抓取 paKSr|O
**FileSplitterFetch.java k}
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*/ %O! v"Xh
package NetFox; %`&2+\`
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import java.io.*; @JyK|.b#0
import java.net.*; 9Hf9VC3
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public class FileSplitterFetch extends Thread { 4`!Z$kt
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String sURL; //File URL >D(R YI
long nStartPos; //File Snippet Start Position +\F'iAs@
long nEndPos; //File Snippet End Position joiL{
int nThreadID; //Thread's ID 2oNk93D
boolean bDownOver = false; //Downing is over (]Y 5eM
boolean bStop = false; //Stop identical rvXWcu -"
FileAccessI fileAccessI = null; //File Access interface K95p>E`9e
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException A?-oL='
{ yIDD@j=l
this.sURL = sURL; J6L K
this.nStartPos = nStart; DX"xy
this.nEndPos = nEnd; i`dCG[
nThreadID = id; w*oQ["SL
fileAccessI = new FileAccessI(sName,nStartPos);//定位 aC%m- m
} uF1~FKB
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public void run() qoj$]
{ S"OR%
while(nStartPos < nEndPos && !bStop) rdJ d#S
{ XT@-$%u
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try{ d5D$&5Ec
URL url = new URL(sURL); n&-qaoNl
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3b+d"`Y^S
httpConnection.setRequestProperty("User-Agent","NetFox"); 9Hc$G{[a
String sProperty = "bytes="+nStartPos+"-"; $!8-? ?ML
httpConnection.setRequestProperty("RANGE",sProperty); PDrZY.-
Utility.log(sProperty); =gJb^
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InputStream input = httpConnection.getInputStream(); !+L/Khw/C
//logResponseHead(httpConnection); ]y,==1To
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byte[] b = new byte[1024]; X&0 uI*r
int nRead; @>E2?CV
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 2ioQb`=
{ ~:3QBMk::
nStartPos += fileAccessI.write(b,0,nRead); BPdfYu,il
//if(nThreadID == 1) N1|$$9G+
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); \ aHVs
} U2ZD]q
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Utility.log("Thread " + nThreadID + " is over!"); BI $
bDownOver = true; IGtl\b=
//nPos = fileAccessI.write (b,0,nRead); .h>8@5/s
} IuNiEtKx
catch(Exception e){e.printStackTrace ();} r9
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} c2e
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} ?zQA
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//打印回应的头信息 qeL5D*
public void logResponseHead(HttpURLConnection con) V\^EfQ
{ .R9IL-3fO
for(int i=1;;i++) [BT/~6ovrZ
{ Qt/8r*Oe
String header=con.getHeaderFieldKey(i); FvJd8kV
if(header!=null) Vv8jEZ8
//responseHeaders.put(header,httpConnection.getHeaderField(header)); V( -mD
Utility.log(header+" : "+con.getHeaderField(header)); *{yK
8
else Up,vD)tG
break; D,g1<:<
} hNd}Y'%V
} lhw()u
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public void splitterStop() I+dbZBX
{ FKT1fv[H
bStop = true; pGK;1gVj
} N9vP7
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} 'ul~7h;n
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/* UGuxV+Nwf
**FileAccess.java x
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*//文件访问(定位,写) QC X8IIHG
package NetFox; cdG|m[
import java.io.*; kjtjw1\o
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public class FileAccessI implements Serializable{ w);6K[+;
*
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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 ltD37QZQ
RandomAccessFile oSavedFile; 3l3'bw2
long nPos; YJl("MZ
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public FileAccessI() throws IOException !V,{_(LT
{ {FG|\nPw
this("",0); EoxQ
*/
} hDp6YV,q
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public FileAccessI(String sName,long nPos) throws IOException Jte#ZnP
{ vMs$ceq
oSavedFile = new RandomAccessFile(sName,"rw"); '8T=~R6
this.nPos = nPos; E4W zU
oSavedFile.seek(nPos); LbZ:&/t^y8
} w&B#goS
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public synchronized int write(byte[] b,int nStart,int nLen) ?1[\!
{ &_gTD
int n = -1; @;H,gEH^
try{ }LijnHH.
oSavedFile.write(b,nStart,nLen); LI6hEcM=
n = nLen; Wf&W^Q
} BZXUwqEh
catch(IOException e) =T7A]U]
{ yT#{UA^
e.printStackTrace (); 9gEssTkts
} Myq5b`z
o, !T2&}
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return n; wu4NLgkE
} NSFs\a@1
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} B-T/V-c7
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/* yH<$k^0r*
**SiteInfoBean.java E gDQ+(
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*/ H=\!2XS
package NetFox; )5.C]4jol
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public class SiteInfoBean { `)Z!V?&