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**SiteFileFetch.java uA[c$tBe
*/ H3>49;`
package NetFox; (jp!q,)
import java.io.*; :\F1S:&P
import java.net.*; {oftZXwf
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public class SiteFileFetch extends Thread { %'w?fqk
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SiteInfoBean siteInfoBean = null; //文件信息Bean .%G>z"Xx
long[] nStartPos; //开始位置 SpC6dkxD\
long[] nEndPos; //结束位置 ua!43Bp
FileSplitterFetch[] fileSplitterFetch; //子线程对象 $W;f9k@C!
long nFileLength; //文件长度 jB"IJ$cD
boolean bFirst = true; //是否第一次取文件 %7hf6Xo=
boolean bStop = false; //停止标志 ,<s/K
File tmpFile; //文件下载的临时信息 (yK@(euG
DataOutputStream output; //输出到文件的输出流 t2LX@Q"
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) [x{Ai(
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public SiteFileFetch(SiteInfoBean bean) throws IOException M(U<H;Csk
{ 4DgH/Yo
siteInfoBean = bean; ]%2y`Jrl^W
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); f=hT
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); VOSq%hB
if(tmpFile.exists ()) z 4qEC
{ uGpLh0
bFirst = false; 8 RA
read_nPos(); -2B3 xIZJ
} QV[#^1
else 25Uw\rKeO
{ ER,!`C]
nStartPos = new long[bean.getNSplitter()]; lOy1vw'
nEndPos = new long[bean.getNSplitter()]; <nU8.?\?~
} $1y8X K7r
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} 43,baeG
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public void run() L/?jtF:o
{ 7/zaf
//获得文件长度 0at['zw
//分割文件 }R!t/8K
//实例FileSplitterFetch Ou`;HN;[
//启动FileSplitterFetch线程 4I8QM&7
//等待子线程返回 wvmcD%
try{ $It3}?>C'
if(bFirst) '{w[).c.
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nFileLength = getFileSize(); l5nm.i<M
if(nFileLength == -1) zF@[S
{ qVW3oj<2
System.err.println("File Length is not known!"); WK5B8u*<
} 4\E1M[ 6
else if(nFileLength == -2) u'T?e+=
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System.err.println("File is not access!"); /?NfU.+K
} @E4ya$A)F
else Q`!^EyRA:^
{ M5:j)oW
for(int i=0;i<nStartPos.length;i++) ~ycWcZi>
{ f#McTC3C
nStartPos = (long)(i*(nFileLength/nStartPos.length)); wb>"'%
} qr (t_qR&
for(int i=0;i<nEndPos.length-1;i++) i9Eh1A3Y
{ AC*SmQ\>!
nEndPos = nStartPos[i+1]; $DdC|gMK
} R|92T*h
nEndPos[nEndPos.length-1] = nFileLength; pJJOy
} lNz1|nS(Kd
} Y;"jsK{$
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//启动子线程 ^CK
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; hU3sEOm>
for(int i=0;i<nStartPos.length;i++) :F_>`{
{ '~VF*i^4
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6_&S
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "E@A~<RKP
nStartPos,nEndPos,i); z31g"
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); nRyx2\Py+
fileSplitterFetch.start(); 6rM{r>
} RivhEc1h%
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), mV0u:ws
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7x]q>Y8T
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", -jzoGzC3
nEndPos = " + nFileLength); U]W"
// fileSplitterFetch[nPos.length-1].start(); 26p_fKY
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//等待子线程结束 < lUpvr
//int count = 0; b2H-D!YO^
//是否结束while循环 0p+36g
boolean breakWhile = false; a'g&1N0Rc
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while(!bStop) CzIs_/
{ Cj=_WWo
write_nPos(); o;21|[z
Utility.sleep(500); Tb!FO"o
breakWhile = true; yg4#,4---b
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for(int i=0;i<nStartPos.length;i++) 5jv*C]z
{ ]Ot=At
if(!fileSplitterFetch.bDownOver) N_G84wxx
{ 4aKppj
breakWhile = false; RXo 6y(^
break; \t%iUZ$
} '#>Fe`[
} :2V|(:^'
if(breakWhile) &Xc=PQ:I
break; At'M? Q@v
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//count++; <g&.U W4
//if(count>4) 2PSkLS&IM
// siteStop(); }=B~n0
} ,J=l Hj
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System.err.println("文件下载结束!"); =:t<!dp
} 1<cx!=w'
catch(Exception e){e.printStackTrace ();} ; K,5qs
} | )br-?2
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//获得文件长度 RN}joKV
public long getFileSize() $$SJLV
{ f@q.kD21
int nFileLength = -1; +_25E.>ml
try{ KdD~;Ap$
URL url = new URL(siteInfoBean.getSSiteURL()); TRJTJM_k
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); M`7[hr
httpConnection.setRequestProperty("User-Agent","NetFox"); n/`!G?kvI
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int responseCode=httpConnection.getResponseCode(); !/ dH"h
if(responseCode>=400) XB@i{/6K
{ [XH,~JZJj
processErrorCode(responseCode); CpK:u!
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return -2; //-2 represent access is error I!}V+gu=
} (N/-blto
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String sHeader; zqURnsJ
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for(int i=1;;i++) C(UWir3mW?
{ !Pt4\
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Spu;
//Utility.log(in.readLine()); l8:!{I?s=
sHeader=httpConnection.getHeaderFieldKey(i); -x:7K\=$SX
if(sHeader!=null) kd_!S[
{ !T2{xmHKv$
if(sHeader.equals("Content-Length")) $5\!ws<cZ
{ {=,G>p
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); !&cfX/y8
break; [k75+#'
} yMzy!b Ky
} Qmb+%z
else epG]$T![
break; 1]Cbi7
} xFJT&=Af W
} 4sX?O4p
catch(IOException e){e.printStackTrace ();} -m[ tYp,q
catch(Exception e){e.printStackTrace ();} !vVW8hbp
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Utility.log(nFileLength); =[[I<[BZq
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return nFileLength; >o%X;U
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} vbX.0f "n
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//保存下载信息(文件指针位置) S4c-i2Rq
private void write_nPos() 9UV}`UM3V
{ L@jpid95
try{ mM2I
output = new DataOutputStream(new FileOutputStream(tmpFile)); e>6W ^ )
output.writeInt(nStartPos.length); w~+\Mf z
for(int i=0;i<nStartPos.length;i++) Jr%F#/
{ WnU2.:
// output.writeLong(nPos); qrjSG%i~J7
output.writeLong(fileSplitterFetch.nStartPos);
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output.writeLong(fileSplitterFetch.nEndPos); C3N1t
} YMy**
output.close(); >wL!`:c'"
} B*E"yB\NV
catch(IOException e){e.printStackTrace ();} I[gPW7&S@
catch(Exception e){e.printStackTrace ();} 8r:T&)v
} smn(q)tt
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//读取保存的下载信息(文件指针位置) 8|$g"?CU
private void read_nPos() qT:`F
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try{ J5O/c,?g
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Hwtoa,
int nCount = input.readInt(); |/c-~|%
nStartPos = new long[nCount]; T+t7/PwC;
nEndPos = new long[nCount]; W5e>Z&&
for(int i=0;i<nStartPos.length;i++) A|@d{g
{ .W$9nbly
nStartPos = input.readLong(); :Ig9n:
nEndPos = input.readLong(); YHke^Ind
} ux*G*QZ
input.close(); *b!.9p K
} 7/fJQM
catch(IOException e){e.printStackTrace ();} T,Q7 YI
catch(Exception e){e.printStackTrace ();} "vkM*HP
} uZ@qlq8
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private void processErrorCode(int nErrorCode) 7l09
{ ^^24a_+2
System.err.println("Error Code : " + nErrorCode); WP Gp(Xw
} ar'VoL}
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//停止文件下载 <VQ@I
public void siteStop() blP8"(U
{ |oX9SU l
bStop = true; BPKrRex
for(int i=0;i<nStartPos.length;i++) >{A)d<
fileSplitterFetch.splitterStop(); D5xTuv9T
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} 6/p9ag]
} M?<iQxtyb}
//负责部分文件的抓取 .:B0(4Mj
**FileSplitterFetch.java {K|ds($ 5
*/ >MhZ(&iD
package NetFox; BLt_(S?Z`
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import java.io.*; q[Ey!h)xq
import java.net.*; Nr"GxezU+A
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public class FileSplitterFetch extends Thread { Y(ClG*6 ++
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String sURL; //File URL EiDpy#f}
long nStartPos; //File Snippet Start Position V' i@N
long nEndPos; //File Snippet End Position zxd<Cq>d
int nThreadID; //Thread's ID _g D9oK
boolean bDownOver = false; //Downing is over 31M'71s
boolean bStop = false; //Stop identical $bBUL C
FileAccessI fileAccessI = null; //File Access interface CSwB+yN
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException onS4ZE3B
{ *13-)yfd
this.sURL = sURL; ~H[_=
this.nStartPos = nStart; V,\}|_GY
this.nEndPos = nEnd; .#K\u![@N
nThreadID = id; .%\||1F<
fileAccessI = new FileAccessI(sName,nStartPos);//定位 RaymSh
} DGz}d,ie
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public void run() 5l(@p7_+
{ ~X'hRNFx~
while(nStartPos < nEndPos && !bStop) (9] =;)
{ S3QX{5t\
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try{
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URL url = new URL(sURL); w2`JFxQ^x
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); g( S4i%\
httpConnection.setRequestProperty("User-Agent","NetFox"); |uRYejj#j
String sProperty = "bytes="+nStartPos+"-"; ZLf(m35
httpConnection.setRequestProperty("RANGE",sProperty); A9Pq}3U
Utility.log(sProperty); K!-iDaVI
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InputStream input = httpConnection.getInputStream(); =~dXP
//logResponseHead(httpConnection); K8QEHc:
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byte[] b = new byte[1024]; jT-tsQ .,
int nRead; Go~3L8
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while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) :/fT8KCwo
{ :D !/.0
nStartPos += fileAccessI.write(b,0,nRead); F7=&CW 0
//if(nThreadID == 1) k4"O}jQO
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _gCi@uXS3
} Rp}Sm,w(
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Utility.log("Thread " + nThreadID + " is over!"); COH>B1W@
bDownOver = true; &