/* } oJ+2OepN
**SiteFileFetch.java +SM $#
*/ MxxY MR
package NetFox; r&"}zyL
import java.io.*; </<_e0
import java.net.*; wd*i~A3+?
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public class SiteFileFetch extends Thread { ) 0$7{3
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SiteInfoBean siteInfoBean = null; //文件信息Bean j._9;HifZ
long[] nStartPos; //开始位置 ltt%X].[
long[] nEndPos; //结束位置 V~5vVY_HG&
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ))!Z2PfD
long nFileLength; //文件长度 %Ua*}C
boolean bFirst = true; //是否第一次取文件 D`e!CprF
boolean bStop = false; //停止标志 Kv+E"2d
File tmpFile; //文件下载的临时信息 Z!6\KV]
DataOutputStream output; //输出到文件的输出流 }"fP,:n"KN
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) mT@UQCG
public SiteFileFetch(SiteInfoBean bean) throws IOException pw:<a2.
{ yyk[oH-Q
siteInfoBean = bean; (|ga#%iI
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ^`YSl*:
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }K;@$B6,@
if(tmpFile.exists ()) F=B>0Q5
{ ]*}*zXN/E
bFirst = false; Opmb
read_nPos(); jL8&
} )aquf<u@
else u4$d#0sA
{ dT,X8 "
nStartPos = new long[bean.getNSplitter()]; i[d-n/)
nEndPos = new long[bean.getNSplitter()]; *we 3i
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} >?M:oUVDU
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public void run() *~ 4uF
{ F.?:Gd1
//获得文件长度 x:;8U i"&B
//分割文件 UOF5&>MLb
//实例FileSplitterFetch Pc? d@tm
//启动FileSplitterFetch线程 |Uy hH^
//等待子线程返回 (5-"5<-@R
try{ `;*=2M<c
if(bFirst) XnWr~h{b
{ ]9zc[_
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nFileLength = getFileSize(); a>sUq["
if(nFileLength == -1) `Lm
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{ B_`A[0H
System.err.println("File Length is not known!"); 4OCz:t
} LLgN%!&
else if(nFileLength == -2) ,0<|&D
{ @z
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System.err.println("File is not access!"); z2!NBOv
} ,a$LT
else &[S)zR=?
{ 3z&,>CEX
for(int i=0;i<nStartPos.length;i++) nImRU.;P
{
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); "5XD+qi
} \C}tK,79
for(int i=0;i<nEndPos.length-1;i++) :+]6SC0ql
{ I$qL=
nEndPos = nStartPos[i+1]; a<!g*UVL0M
} %~Nf,
nEndPos[nEndPos.length-1] = nFileLength;
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} o,bV.O.W
} X@x:
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//启动子线程 FjiLc=RXXz
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; }}t"^m s
for(int i=0;i<nStartPos.length;i++) HW.S~eLw*
{ qK|r+}g|&
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A!iH g__/t
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), gADt%K2#Z
nStartPos,nEndPos,i); $6fHY\i#R
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); \jq1F9,
fileSplitterFetch.start(); *I'O_D
} .vQ2w
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Yz-b~D/=}
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); (jY.S|%
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", HaB=nLAT
nEndPos = " + nFileLength); Kh<v2
// fileSplitterFetch[nPos.length-1].start(); Duptles
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//等待子线程结束 ^Po\:x%o
//int count = 0; k qwS/s
//是否结束while循环 Ta/G
boolean breakWhile = false; ( Y/
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while(!bStop) ~&B_ Bswf
{ j nI)n*
write_nPos(); rQisk8%
Utility.sleep(500); '|Q=J)
breakWhile = true; dUjdQ
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for(int i=0;i<nStartPos.length;i++) 1grrb&K
{ =N7N=xY
if(!fileSplitterFetch.bDownOver) f+<-Jc
{ 1RRvNZW
breakWhile = false; [>"qOFCr#:
break; wy) Frg
} %HYC-TF#
} m}
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if(breakWhile) u{6*}6@fi
break; 3kYUO-qw
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//count++; )%ja6Vg
//if(count>4) qY14LdC}~
// siteStop(); {R1jysGtD
} $
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System.err.println("文件下载结束!"); *vBcT.|,
} zI7-xqZ
catch(Exception e){e.printStackTrace ();} 1/le%}mK
} MIt\[EB
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//获得文件长度 :O//A6v
public long getFileSize() s/,St!A4!
{ 2d$hgR#v
int nFileLength = -1;
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try{ uE5kL{Fv
URL url = new URL(siteInfoBean.getSSiteURL()); aYPzN<"%
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); EWqKd/
httpConnection.setRequestProperty("User-Agent","NetFox"); hrcR"OZ~X
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int responseCode=httpConnection.getResponseCode(); l'3NiIX
if(responseCode>=400) 2@e<II2ha8
{ (5G^"Srw
processErrorCode(responseCode); %f{kT<XHu
return -2; //-2 represent access is error +;cw<9%0
} Yj0Ss{Ep
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String sHeader; vRT1tOQ$
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for(int i=1;;i++) =BX<;vU
{ '{OZ[$E
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); {mkYW-4Se
//Utility.log(in.readLine()); kTC6fNj[
sHeader=httpConnection.getHeaderFieldKey(i); SrHRpxy
if(sHeader!=null) 7Bmt^J5i&t
{ >mt<`s
if(sHeader.equals("Content-Length")) eU{=x$o6S
{ KtV_DjH:
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 3s>&h-E
break; ^'FY!^dE
} TSuHY0.cp
} Q*KEODR8\
else >nl*aN
break; !vett4C* K
} -{L[Wt{1
} \>I&UFfH)4
catch(IOException e){e.printStackTrace ();} TR:D
catch(Exception e){e.printStackTrace ();} "&C'K
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Utility.log(nFileLength); :5"|iRP'
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return nFileLength; #j; &g1
} wF38c]r`\<
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//保存下载信息(文件指针位置) /{qr~7k,oQ
private void write_nPos() {}lw%d?A
{ YTYYb#"Q
try{ "=/XIM.
output = new DataOutputStream(new FileOutputStream(tmpFile)); '-ACNgNn
output.writeInt(nStartPos.length); (mz a&WF7
for(int i=0;i<nStartPos.length;i++) J-I7K!B
{ y4envjl0
// output.writeLong(nPos); ~'T]B{.+J
output.writeLong(fileSplitterFetch.nStartPos); C(?lp
output.writeLong(fileSplitterFetch.nEndPos); b/S4b
} ^M?uv{354
output.close(); KN+*_L-
} nTYqZlI,
catch(IOException e){e.printStackTrace ();} }-8K*A3
catch(Exception e){e.printStackTrace ();} e1+
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} Q7#Q6-Q
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//读取保存的下载信息(文件指针位置) \8F$85g
private void read_nPos() _G'.VSGH
{ ]`:Fj|>
try{ O`Z>Oon?
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Gm.v-T$
int nCount = input.readInt(); ]CHMkuP[k
nStartPos = new long[nCount]; #Q|$&b
nEndPos = new long[nCount]; !5=3Y4bg1
for(int i=0;i<nStartPos.length;i++) %oN^1a'&)
{ {OQ sGyR?
nStartPos = input.readLong(); q .?D{[2
nEndPos = input.readLong(); 7 H<_
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} cJH7zumM)
input.close(); (cA=~Bw[=
} S liF$}J
catch(IOException e){e.printStackTrace ();} VDQ&BmJE
catch(Exception e){e.printStackTrace ();} LU%g>?m.]
} `D GO~RMp9
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private void processErrorCode(int nErrorCode) 1uD}V7_y"
{ 6|9];)
System.err.println("Error Code : " + nErrorCode); iOD9lR`s
} )fCl <KG*
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//停止文件下载 &=s{ +0
public void siteStop() r%xNfTa
{ T mUn/
bStop = true; s]=kD
for(int i=0;i<nStartPos.length;i++) r9u*c
fileSplitterFetch.splitterStop(); Zl* HT%-5
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} U;{VL!
} $x`U)pv
//负责部分文件的抓取 XvdK;
**FileSplitterFetch.java \W$>EH
*/ qP]Gl--q{
package NetFox; ozGK
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import java.io.*; OO\UF6MCU
import java.net.*; 6%fU}si,
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public class FileSplitterFetch extends Thread { [c3hwogf:
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String sURL; //File URL EcP"GO5
long nStartPos; //File Snippet Start Position 4\-kzGgmo
long nEndPos; //File Snippet End Position `%rqQnVB
int nThreadID; //Thread's ID a:P%
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boolean bDownOver = false; //Downing is over vbA9V<c&
boolean bStop = false; //Stop identical Be}Cj(C
FileAccessI fileAccessI = null; //File Access interface v'Lckw@G4
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException g:OVAA
{ xx41Qw>\W
this.sURL = sURL;
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this.nStartPos = nStart; hQX|wWh
this.nEndPos = nEnd; /~AajLxu3W
nThreadID = id; OZ7MpQ
fileAccessI = new FileAccessI(sName,nStartPos);//定位 U[Z1@2zLx
} #<l;YT8
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public void run() }.e*=/"MB
{ ^>]p4Q3 6
while(nStartPos < nEndPos && !bStop) bD49$N?>
{ F1MPo;e
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try{ f$/Daq <M
URL url = new URL(sURL); R#Ss_y
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F5EKWP
httpConnection.setRequestProperty("User-Agent","NetFox"); b/2t@VlL
String sProperty = "bytes="+nStartPos+"-"; 6IeHZ)jGj
httpConnection.setRequestProperty("RANGE",sProperty); ~Uga=&
Utility.log(sProperty); vbh\uv&
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InputStream input = httpConnection.getInputStream(); u QCQ$
//logResponseHead(httpConnection); ;:'A{&0N
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byte[] b = new byte[1024]; 9I.="b=J)
int nRead; {OB\~$TH
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 6B|IbQ^
{ wn|Sdp
nStartPos += fileAccessI.write(b,0,nRead); , gz:2UY#
//if(nThreadID == 1) =Ermh7,
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); uv._N6mj
} ][#]4_
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Utility.log("Thread " + nThreadID + " is over!"); O (wt[AEA
bDownOver = true; E[e ''
//nPos = fileAccessI.write (b,0,nRead); .!=2#<
} wVw3YIN#
catch(Exception e){e.printStackTrace ();} _`ot||J
} ?l
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} o- GHAQ
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//打印回应的头信息 Qv[@ioc
public void logResponseHead(HttpURLConnection con) s{hJ"lv:
{ Z
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for(int i=1;;i++) 6XB9]it6
{ "EHwv2Hm>
String header=con.getHeaderFieldKey(i); oXb}6YC
if(header!=null) [% YCupr#
//responseHeaders.put(header,httpConnection.getHeaderField(header)); o^5xCK:Oi2
Utility.log(header+" : "+con.getHeaderField(header)); iQs(Dh=*
else 72luTR Q
break; WEWNFTI
} )I`B+c:
} CA:t](xqQ
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public void splitterStop() # l}Y1^PDd
{ Y+j|T`d
bStop = true; QnVYZUgJeV
} \vojF\
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} -:>Mi5/ s
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/* dN;C-XF3s
**FileAccess.java 1;g>?18@
*//文件访问(定位,写) BWz*!(
package NetFox; -bcm"(<T'
import java.io.*; >*k3D&
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public class FileAccessI implements Serializable{ 53@*GXzE
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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 ~b\bpu
RandomAccessFile oSavedFile; 3S
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long nPos; 7n}J}8Y*U2
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public FileAccessI() throws IOException '+5*ajP<
{ 3Sf<oYF
this("",0); )>C,y`,
} Kcl>uAgU
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public FileAccessI(String sName,long nPos) throws IOException c$bb0J%
{ 45q-x_
oSavedFile = new RandomAccessFile(sName,"rw"); fPa FL}&
this.nPos = nPos; Q4}2-}|
oSavedFile.seek(nPos); :anUr<
} Z^>{bW
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public synchronized int write(byte[] b,int nStart,int nLen) cZPv6c_w
{ DXsp 2
int n = -1; 349W0>eOT
try{ k7'B5zVd
oSavedFile.write(b,nStart,nLen); 2LEf"FH0~
n = nLen; [N'YFb3"O
} M')f,5i&$
catch(IOException e) rp{q.fy'U
{ K!0vvP2H
e.printStackTrace (); DO8@/W(
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} QI.{M$,m~
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return n; +MvcW.W~
} Qis[j-?:
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} LlrUJ-uC7
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/* z ~#
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**SiteInfoBean.java _2R;@[f2
*/ ~jQ|X?tR
package NetFox; 7%b?[}y4
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public class SiteInfoBean { /YKg.DA|
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private String sSiteURL; //Site's URL ,73J#
private String sFilePath; //Saved File's Path pIXbr($
private String sFileName; //Saved File's Name &$:1rA_v
private int nSplitter; //Count of Splited Downloading File jO &sS?
)Gi!wm>zvN
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public SiteInfoBean() >;-.rJFr
{//nSplitter的缺省值为5 x_GD
//default value of nSplitter is 5 A9`& Wnw?
this("","","",5); 2"cUBFc1I
} @!1o +x
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 'avzESe~'
{ [AstD9
sSiteURL= sURL; =aX;-
sFilePath = sPath; \fj*.[,
sFileName = sName; A NR?An
this.nSplitter = nSpiltter; |08b=aR6ro
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} dfAnO F"-
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public String getSSiteURL() j*B,b4
{ gY9HEfB
return sSiteURL; &FH