/* ?oKL&I@
**SiteFileFetch.java V%51k{
*/ r]T0+ oQ>
package NetFox; T,OS 0;7O
import java.io.*; !^?qU;|
import java.net.*; RG1\=J$:E
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public class SiteFileFetch extends Thread { x*q35K^PE
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SiteInfoBean siteInfoBean = null; //文件信息Bean N}mh}
long[] nStartPos; //开始位置 :,~K]G
long[] nEndPos; //结束位置 E}YIWTX
FileSplitterFetch[] fileSplitterFetch; //子线程对象 9!#EwPD$#
long nFileLength; //文件长度 n[CoS
boolean bFirst = true; //是否第一次取文件 M*`hDdS
boolean bStop = false; //停止标志 y/tSGkMv
File tmpFile; //文件下载的临时信息 r6
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DataOutputStream output; //输出到文件的输出流 h.}u?{
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) H+x#gK2l
public SiteFileFetch(SiteInfoBean bean) throws IOException cmDT
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{ q3+8]-9|5
siteInfoBean = bean; D/:3RZF
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); no&-YktP}
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); YtYy zX5u7
if(tmpFile.exists ()) th
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{ b-%l-u
bFirst = false; f^e&hyC
read_nPos(); :0I
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} ;;Tq$#vd
else ;4kT?3$l
{ g~)3WfC$[
nStartPos = new long[bean.getNSplitter()]; &*gbK6JB
nEndPos = new long[bean.getNSplitter()]; QBihpA1;
} E1(1E?}!
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} T6HU*(
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public void run() %{'4.
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{ qqvF-mDN
//获得文件长度 A[JM4x
//分割文件 iLtc
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//实例FileSplitterFetch GFL-.?
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//启动FileSplitterFetch线程 B*79qq
//等待子线程返回 |^Kjz{
try{ 5[R?iSGL1
if(bFirst) l$M +.GB<
{ gtYRV*^q
nFileLength = getFileSize(); "8/dD]=f^a
if(nFileLength == -1) m~>@BCn;
{ [W;[v<E;
System.err.println("File Length is not known!"); ^yVl"/
} uJ8{HB
else if(nFileLength == -2) -J?~U2
{ D=&K&6rr
System.err.println("File is not access!"); ?,XC=}
} 9@y3IiZ"}
else 6+PGwCS
{ (h,Ws-O
for(int i=0;i<nStartPos.length;i++) vr4S9`,
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); [:B*6FXMN~
} 88o:NJ}_
for(int i=0;i<nEndPos.length-1;i++) m UgRm]
{ }N,>A-P
nEndPos = nStartPos[i+1]; m
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} ;J=:IEk
nEndPos[nEndPos.length-1] = nFileLength; l &Z(K,6
} ik\S88|
} o^GC=Aca`
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//启动子线程 >FF1)~
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; rBfg*r`)
for(int i=0;i<nStartPos.length;i++) w+_Wc~f
{ hk;bk?:m
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), j@ v-|
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), D9o*8h2$
nStartPos,nEndPos,i); ikHOqJ-,m
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); D]u=PqHk2
fileSplitterFetch.start(); x)R0F\_
} 9L"?wv
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .Dx2 ;lj
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); K)5;2lN,
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 968^ "T#
nEndPos = " + nFileLength); ) b:4uK
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// fileSplitterFetch[nPos.length-1].start(); `~nCbUUee
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//等待子线程结束 bl.EIyG>
//int count = 0; 38wq (
//是否结束while循环 kl<g;3
boolean breakWhile = false; >{XScxaB`
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while(!bStop) 7K :FeW'N
{ ,8VXA +'_
write_nPos(); yVYkuO
Utility.sleep(500); >76 |:Nq
breakWhile = true; [YE?OQ7#
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for(int i=0;i<nStartPos.length;i++) a}yR p
{ o? \Gm
if(!fileSplitterFetch.bDownOver) UABbcNW
{ #(dhBEXPW;
breakWhile = false; Q>%E`h
break; o9+Q{|r
} !I7 ?
} %zflx~
if(breakWhile) OG}KqG!n
break; ?O7iK<5N
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//count++; 4(|yD;
//if(count>4) 0BDS_Rx
// siteStop(); pVz*ZQ[]
} PWG;&ma
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System.err.println("文件下载结束!"); tqhh<u;
} '!@A}&]
catch(Exception e){e.printStackTrace ();} 8Fx]koP.
} |^!Vo&T
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//获得文件长度 3):?ZCw7y
public long getFileSize() ^O \q3HA_4
{ :D4];d>1
int nFileLength = -1; 5M.Red.L
try{ D aDUK?
URL url = new URL(siteInfoBean.getSSiteURL()); O!
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); # JFYws
httpConnection.setRequestProperty("User-Agent","NetFox"); GhiHA9.
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int responseCode=httpConnection.getResponseCode(); hXTYTbTX
if(responseCode>=400) Om6Mmoqh
{ 5p{25N_t
processErrorCode(responseCode); eA&t%
return -2; //-2 represent access is error wPQ&Di*X}
} 6VFirLd
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String sHeader; %2YN,a4
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for(int i=1;;i++) ydyG}XI7V
{ cdDY]"k
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); SctJxY(}!
//Utility.log(in.readLine()); 1yJ75/
sHeader=httpConnection.getHeaderFieldKey(i); SdSgn |S
if(sHeader!=null) &t_A0z
{ ,z oB0([
if(sHeader.equals("Content-Length")) I}_;A<U
{ R`
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nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?(>k,[n
break; 1wlVz#f.
} z2v<a{e
} Q-3r}jJe
else WV@X@]U
break; Qxky^:B
} e`;t<7*i
} yIWc\wv
catch(IOException e){e.printStackTrace ();} 7|{ B#
catch(Exception e){e.printStackTrace ();} "R8.P/ 3
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Utility.log(nFileLength); T:6K?$y?
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return nFileLength; X0!Bs-WFp
} Enu!u~1]F
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//保存下载信息(文件指针位置) W oWBs)E
private void write_nPos() HmW=t}!
{ <c(&T<$
try{ _TrZ'iL}T
output = new DataOutputStream(new FileOutputStream(tmpFile)); 8<Xq=*J+
output.writeInt(nStartPos.length); }a'cm!"
for(int i=0;i<nStartPos.length;i++) . Jptj
{ gU+ss
// output.writeLong(nPos); WqR7uiCi
output.writeLong(fileSplitterFetch.nStartPos); el}hcAY/RP
output.writeLong(fileSplitterFetch.nEndPos); X:U=MWc>
} tg3zXJ4k_
output.close(); [z^Od
} !ZX&r{pJp
catch(IOException e){e.printStackTrace ();} o>.AdZby
catch(Exception e){e.printStackTrace ();} 2G
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} r1+c/;TpZ
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//读取保存的下载信息(文件指针位置) iQu^|,tHEM
private void read_nPos() |^?`Q.|c$
{ <>VIDE
try{ Qg[heND
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); b$dBV}0 L
int nCount = input.readInt(); 8>ESD}(
nStartPos = new long[nCount]; xC'mPcU8
nEndPos = new long[nCount]; q)vK`\Y
for(int i=0;i<nStartPos.length;i++) ) sRN!~
{ (v]P<3%
nStartPos = input.readLong(); U&`6&$]
nEndPos = input.readLong(); 5[nmP95YK
} Wux 0RF&
input.close(); lK "'nLL
} gAj0ukX5
catch(IOException e){e.printStackTrace ();} tB]`Hj
catch(Exception e){e.printStackTrace ();} :-(U%`a[
} ~KJ,SLzhx9
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private void processErrorCode(int nErrorCode) K!9y+%01
{ DE'Xq6#PK
System.err.println("Error Code : " + nErrorCode); 3'.!
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} HJc<Gwm
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//停止文件下载 L^6"'#
public void siteStop() 1X[73
{ w8G7Jy
bStop = true; LFl2uV"
for(int i=0;i<nStartPos.length;i++) BQ).`f";d
fileSplitterFetch.splitterStop(); :sU!PF[<
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} rFf:A-#l
} hJecCOA)'
//负责部分文件的抓取 >9 q]>fJ
**FileSplitterFetch.java G!nl'5|y
*/ )t*S'R
package NetFox; <}<#W/
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import java.io.*; nWKO8C>
import java.net.*; "(Mvl1^BT
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public class FileSplitterFetch extends Thread { ${wU+E*
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String sURL; //File URL Dq{:R
long nStartPos; //File Snippet Start Position ~&t!$
long nEndPos; //File Snippet End Position { k
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int nThreadID; //Thread's ID lt }r}HM+
boolean bDownOver = false; //Downing is over -b@v0%Q2M*
boolean bStop = false; //Stop identical E7V38Z
FileAccessI fileAccessI = null; //File Access interface MomLda
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException \El|U#$u'
{ YI L'YNH
this.sURL = sURL; N<p5p0
this.nStartPos = nStart; AmP#'U5
this.nEndPos = nEnd; ue,#,3{m
nThreadID = id; -L+\y\F
fileAccessI = new FileAccessI(sName,nStartPos);//定位 OD{5m(JwL
} PthIdaN@
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public void run() {CW1t5$*
{ 0eQ~#~j&
while(nStartPos < nEndPos && !bStop) 3"^a
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{ M' &J_g
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try{ l R:Ok8e
URL url = new URL(sURL); t.3Ct@wK
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); s]$HkSH
httpConnection.setRequestProperty("User-Agent","NetFox"); lo\: ]/&6
String sProperty = "bytes="+nStartPos+"-"; 6\; 4
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httpConnection.setRequestProperty("RANGE",sProperty); ;M%oQ>].[
Utility.log(sProperty); m\<<oIlH
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InputStream input = httpConnection.getInputStream(); kqj;l\N
//logResponseHead(httpConnection); <8}KEe4
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byte[] b = new byte[1024]; .}IK}A/-
int nRead; >+yqjXRzm
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) F% F
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{ Fg_?!zR>6
nStartPos += fileAccessI.write(b,0,nRead); K<$wz/\
//if(nThreadID == 1) It#h p,@e
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !F=|*j
} `'z(--J}`
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Utility.log("Thread " + nThreadID + " is over!"); >t1_5
bDownOver = true; QH@Q\
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//nPos = fileAccessI.write (b,0,nRead); fG:PdIJ7_
} Xz;et>UD*B
catch(Exception e){e.printStackTrace ();} .OVW4svX
} lcu( "^{3
} FQ;4'B^k]
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//打印回应的头信息 1x~%Ydy
public void logResponseHead(HttpURLConnection con) $sA,$x:^xI
{ 8[6ny=S`
for(int i=1;;i++) 7Vz[ji
{ 2rK-X_}
String header=con.getHeaderFieldKey(i); !^c:'I>~
if(header!=null) .8u$z`j
//responseHeaders.put(header,httpConnection.getHeaderField(header)); d$2@,
Utility.log(header+" : "+con.getHeaderField(header)); [VY8?y
else &