/* &{X{36
**SiteFileFetch.java a Q.Iq
*/ L!CX&
package NetFox; hB|H9+
import java.io.*; F?*Dr
import java.net.*; h$E\2lsE
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public class SiteFileFetch extends Thread { ^VSt9&
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SiteInfoBean siteInfoBean = null; //文件信息Bean ^n\9AE3
long[] nStartPos; //开始位置 L9E;Uii0
long[] nEndPos; //结束位置 l=oN X"l=
FileSplitterFetch[] fileSplitterFetch; //子线程对象 + ")qi=
long nFileLength; //文件长度 <_##YSGh,
boolean bFirst = true; //是否第一次取文件 }"F
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boolean bStop = false; //停止标志 4yA9Ni
File tmpFile; //文件下载的临时信息 ?b!CV
DataOutputStream output; //输出到文件的输出流 ti$oZ4PpF
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) b@nri5noBm
public SiteFileFetch(SiteInfoBean bean) throws IOException .`oJcJ
{ b&\3ps
siteInfoBean = bean; /#S4espE
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); W&fW5af9
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); LydbP17K}
if(tmpFile.exists ()) ek<PISlci
{ hQgk.$g
bFirst = false; :FX'[7;p
read_nPos(); +-Z"H)
} OaD
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else MgJ%26TZ
{ 3a'Rs{qxn
nStartPos = new long[bean.getNSplitter()]; v#Cz&j
nEndPos = new long[bean.getNSplitter()]; W0+gfg
} 37j\D1Y
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} .ujs`9d_-
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public void run() |i,zY{GI+2
{ |<|28~#
//获得文件长度 n/9 LRZD|w
//分割文件 ^ l]]qdNr
//实例FileSplitterFetch =:xV(GK}
//启动FileSplitterFetch线程 'Z*\1Ci
//等待子线程返回 u)q2YLK8
try{ e3yorQ][
if(bFirst) KuIt[oM
{ e.)yV'%L
nFileLength = getFileSize(); }};j2
if(nFileLength == -1) 1kB'sc3N!
{ x&hvFG3
System.err.println("File Length is not known!"); Hrd5p+j
} OPvj{Dv$0
else if(nFileLength == -2) d-6sC@PB
{ 2ru*#Z#(
System.err.println("File is not access!"); aGq_hP
} B)j`}7O06
else ]Ks]B2Osz
{ B$} wF<`k7
for(int i=0;i<nStartPos.length;i++) 8!
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); U~u6}s]:
} dCf'\@<<
for(int i=0;i<nEndPos.length-1;i++) Bo](n*i
{ p`E|SNt/W
nEndPos = nStartPos[i+1]; >cwJl@wx-
} <r_P?
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nEndPos[nEndPos.length-1] = nFileLength; >5Q^9 9V
} (uuEjM$3%
} Pi&fwGL
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//启动子线程 Dg9--wI}I9
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;Zx K3/(7
for(int i=0;i<nStartPos.length;i++) rQd1Ch
{ boC>N
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), h3UZ|B0=
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Gx(K N57D
nStartPos,nEndPos,i); wf~5lpI[
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :,h=2a_ 8
fileSplitterFetch.start(); {<-
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} %8Z|/LGg
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(),
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siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7':5
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (]zl$*k
nEndPos = " + nFileLength); k=h/i8i2z
// fileSplitterFetch[nPos.length-1].start(); 5p]urfN-f
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//等待子线程结束 >j(I[_g
//int count = 0; gZ`#tlA~
//是否结束while循环 iGEQXIr3
boolean breakWhile = false; E i\J9zt
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while(!bStop) r
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{ q_9N+-?{7
write_nPos(); ;3.T* ?|o
Utility.sleep(500); >+A1 V[
breakWhile = true; +,vJ7
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for(int i=0;i<nStartPos.length;i++) O)$N}V0
{ WQIM2_=M
if(!fileSplitterFetch.bDownOver) GDo)6du
{ c"%_]7
breakWhile = false; Gg}LC+Y
break; y]E)2:B[d
} UijuJ(Tle
} !~|"LA!jn
if(breakWhile) w{YtTZp3
break; JL]k:i^`A
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//count++; @ 2%.>0s.
//if(count>4) 6S! lD=
// siteStop(); m5'__<
} 2kp|zX(
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System.err.println("文件下载结束!"); =XRgT1>e
} |04}zU%N
catch(Exception e){e.printStackTrace ();} ~Me&cT8
} C~
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//获得文件长度 -Iruua7b
public long getFileSize() IJ
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{ 5JU(@}Db
int nFileLength = -1; 6gg# Z
try{ <750-d!
URL url = new URL(siteInfoBean.getSSiteURL()); bAy5/G!_R
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); st'?3A
httpConnection.setRequestProperty("User-Agent","NetFox"); $:-= >
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int responseCode=httpConnection.getResponseCode(); R+ #.bQg
if(responseCode>=400) YV ZSKU
{ qs8K jG@
processErrorCode(responseCode); 3*2&Fw!B
return -2; //-2 represent access is error {Gb)Et]<
} gk_X u
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String sHeader; sxC{\iLY%
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for(int i=1;;i++) .2(@jx,[
{ >ihe|WN
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); qRP8dH
//Utility.log(in.readLine()); 9TXm Z
sHeader=httpConnection.getHeaderFieldKey(i); +}G>M=t::
if(sHeader!=null) k. ?
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{
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if(sHeader.equals("Content-Length")) $CQwBsYb=
{ j9L+.UVI,
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); C(%5,|6
break; ,rl
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} rY_C3;B
} -JyODW#j
else bbPd&7
break; i_ODgc`H
} )Ido|!]0d
} si
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catch(IOException e){e.printStackTrace ();} z7l;|T
catch(Exception e){e.printStackTrace ();} `aWwF}
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Utility.log(nFileLength); {'wU&!
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return nFileLength; d8 BK/b
} f@.Q%+!4
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//保存下载信息(文件指针位置) <hF~L k ,
private void write_nPos() @9kk
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{ 8Jy1=R*S
try{ \%4+mgiD
output = new DataOutputStream(new FileOutputStream(tmpFile)); :#&U95EC0
output.writeInt(nStartPos.length); T=p}By3a
for(int i=0;i<nStartPos.length;i++) ?=@Q12R)X
{ aab4c^Ms=
// output.writeLong(nPos); :PjUl
output.writeLong(fileSplitterFetch.nStartPos); G'}_ZUy#
output.writeLong(fileSplitterFetch.nEndPos); &LxzAL,3!
} /jL{JF>I
output.close(); RVKaqJ0e<
} ^%OH}Z `ly
catch(IOException e){e.printStackTrace ();} !#|fuOWe
catch(Exception e){e.printStackTrace ();} r`E1<aCr|
} {ZIFj.2
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//读取保存的下载信息(文件指针位置) Z FrXw+
private void read_nPos() +uGP(ONY
{ v=Bh
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try{ N n-6/]d#
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); mBgx17K/-_
int nCount = input.readInt(); Y X{
nStartPos = new long[nCount]; "?0G^zu
nEndPos = new long[nCount]; xY}j8~k
for(int i=0;i<nStartPos.length;i++) ^5@"|m1
{ +&zuI
nStartPos = input.readLong(); 7Caap/L:
nEndPos = input.readLong(); Zz*mf+
} PQ#-.K
input.close(); Hr,lA(
} czsoD)N
catch(IOException e){e.printStackTrace ();} F-\8f(\
catch(Exception e){e.printStackTrace ();} ]3#
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} 68br
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private void processErrorCode(int nErrorCode) Pg8=
{ 8}`8lOE7
System.err.println("Error Code : " + nErrorCode); GDQg:MgX
} 2uR4~XjF
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//停止文件下载 <W|{)U?p
public void siteStop() kX .1#%Ex
{ b6$A@b
bStop = true; $mg h.3z0
for(int i=0;i<nStartPos.length;i++) m3!MHe~t
fileSplitterFetch.splitterStop(); TV>R(D3T/
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} (2\ekct ^
} ~map5@Kd
//负责部分文件的抓取 aeLo;!Jh
**FileSplitterFetch.java /@}# KP=
*/ f2e$BA
package NetFox; m<LzB_G\
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import java.io.*; 90696v.
import java.net.*; GIl{wd
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public class FileSplitterFetch extends Thread { <;Z~ vZ]
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String sURL; //File URL Fm~}A4
long nStartPos; //File Snippet Start Position mNB ]e5;N
long nEndPos; //File Snippet End Position %z_b/yG
int nThreadID; //Thread's ID -@?>nLQb
boolean bDownOver = false; //Downing is over bN%MT#X
boolean bStop = false; //Stop identical )
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FileAccessI fileAccessI = null; //File Access interface p.Yg-CA
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException WSccR
{ 1,D
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this.sURL = sURL; aL6 5t\2
this.nStartPos = nStart; %31K*i/]
this.nEndPos = nEnd; ?O^:j!C6
nThreadID = id; hUvH
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 %pKs- n`
} h0QQP
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public void run() aVL%-Il}
{ j'b4Sbs-f
while(nStartPos < nEndPos && !bStop) 4KB?g7_*
{ Mo
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try{ D"aQbQP
URL url = new URL(sURL); >(J!8*7
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); WoR**J?}w
httpConnection.setRequestProperty("User-Agent","NetFox"); 5 :>
String sProperty = "bytes="+nStartPos+"-"; 62E(=l
httpConnection.setRequestProperty("RANGE",sProperty); I9&<:`
Utility.log(sProperty); 2Ps`!Y5
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InputStream input = httpConnection.getInputStream(); u3!!_~6,z
//logResponseHead(httpConnection); G?(:Z=
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byte[] b = new byte[1024]; c=E.-
int nRead; e+aQ$1^t
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) FJ.
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{ jH/%Z5iu
nStartPos += fileAccessI.write(b,0,nRead); 9Dkgu^`
//if(nThreadID == 1) k( ^ b
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); f}d@G/L
} YH$`r6\S
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Utility.log("Thread " + nThreadID + " is over!"); 'm((G4
bDownOver = true; *Y?]="8c#;
//nPos = fileAccessI.write (b,0,nRead); f
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} j0M;2 3@[
catch(Exception e){e.printStackTrace ();} </Lqk3S-!
} hZG{"O!2s
} P3>2=qK"E(
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//打印回应的头信息 >qZRIDE5$
public void logResponseHead(HttpURLConnection con) %uMsXa
{ y[eNM6p
for(int i=1;;i++) Y^f|}YO%y
{ K|!)<6ZsG7
String header=con.getHeaderFieldKey(i); P1jkoJ
if(header!=null) V!!'S
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//responseHeaders.put(header,httpConnection.getHeaderField(header)); _Y~?. hs^
Utility.log(header+" : "+con.getHeaderField(header)); v:b%G?o
else |9JYg7<
break; I<#kw)W!
} 4K% YS
} o4795r,jz
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public void splitterStop() ]kvE+m&p}^
{ '93&?
bStop = true; c" HCc]
} fTcRqov
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} b`=rd 4cpU
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/* ?whp_
**FileAccess.java O^hV<+CX
*//文件访问(定位,写) ]e9kf$'
package NetFox; I}{eYXh
import java.io.*; @n3PCH6:Ao
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public class FileAccessI implements Serializable{ }zi6 F.
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 _^ZII
RandomAccessFile oSavedFile; {:cA'6f.b
long nPos; B dUyI_Ks:
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public FileAccessI() throws IOException SuSZ,>
{ Kxn=iv^Ir
this("",0); !Ai;S
} y uq E
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public FileAccessI(String sName,long nPos) throws IOException I-I5^s
{ ,$>Z= ~x*
oSavedFile = new RandomAccessFile(sName,"rw"); U/X ^
this.nPos = nPos; s,8%;\!C
oSavedFile.seek(nPos); !LA#c'
} IuL]V TY
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public synchronized int write(byte[] b,int nStart,int nLen) x(Z@R\C-a
{ P7!Sc
int n = -1; 3m'6 cMQ
try{ BDg /pDnwg
oSavedFile.write(b,nStart,nLen); G<I5%Yo6G
n = nLen;
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} 'Z[R*Ikzq
catch(IOException e) dEnhNPeRl
{ }#1{GhsS
e.printStackTrace (); Q*5d~Yr ]R
} |k0VJi
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return n; 4+0Zj+
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} 62q-7nV
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} !~#31kL&
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/* gkjZX
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**SiteInfoBean.java n >^?BU
*/ S_atEmQ
package NetFox; ZL
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public class SiteInfoBean { V l%k:
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private String sSiteURL; //Site's URL L r,$98Dy
private String sFilePath; //Saved File's Path w@4+&v>O
private String sFileName; //Saved File's Name @9L9c
private int nSplitter; //Count of Splited Downloading File k dqH36&<
@NF8?>!
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public SiteInfoBean() &*}S 0
{//nSplitter的缺省值为5 pfG:PrZ
//default value of nSplitter is 5 d$ /o\G
this("","","",5); 0WFZx
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} [g{}0[ew
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) A,osrv
{ h(fh |R<
sSiteURL= sURL; #KwFrlZ
sFilePath = sPath; 9o6y7hEQy
sFileName = sName; *e R$
this.nSplitter = nSpiltter; mMR[(
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} 6 B
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public String getSSiteURL() ]loO 5
{ $t]DxMd
return sSiteURL; _ n>0!
} sTb/l!=o
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public void setSSiteURL(String value) tf,_4_7#$
{ r&qD