/* I,`D&
**SiteFileFetch.java (Db*.kd8,
*/ NIXc ib"tG
package NetFox; V]CK'
import java.io.*; VgC9'"|
import java.net.*; fSQ3 :o
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public class SiteFileFetch extends Thread { "n2xn%t{
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SiteInfoBean siteInfoBean = null; //文件信息Bean ^VLUZ
long[] nStartPos; //开始位置 O]4
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long[] nEndPos; //结束位置 i+
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FileSplitterFetch[] fileSplitterFetch; //子线程对象 /{#_Um0.
long nFileLength; //文件长度 #t9=qR~"
boolean bFirst = true; //是否第一次取文件 bZ@53
boolean bStop = false; //停止标志 piM11W}|/
File tmpFile; //文件下载的临时信息 LZAj4|~,m
DataOutputStream output; //输出到文件的输出流 4Xb}I;rM
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) F~0%j}ve
public SiteFileFetch(SiteInfoBean bean) throws IOException fKK-c9F
{ #+DmH
siteInfoBean = bean; kBQenMm
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); )V =K#MCK
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ]bU'G$Qm&s
if(tmpFile.exists ()) lO[jf6gB
{ < $?}^
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bFirst = false; hZ /
read_nPos(); 3,cE/Ei
} Rb>RjHo S
else %Fm;LQa ]
{ ZK_@.O+ ]
nStartPos = new long[bean.getNSplitter()]; u:u 7|\q
nEndPos = new long[bean.getNSplitter()]; p'c<v)ia
} Ch&]<#E>`
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} ydFhw}1>
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public void run()
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{ F0^~YYRJV
//获得文件长度 =4\~M"[p
//分割文件 7Mg7B
//实例FileSplitterFetch !U~#H_
//启动FileSplitterFetch线程 5i-;bLm
//等待子线程返回 *RE-K36m|u
try{ zZ0V6T}
if(bFirst) yl+)I
{ 3S|;yOl#X
nFileLength = getFileSize(); 4O"kOEkKT>
if(nFileLength == -1) tnbs]6
{ MxA'T(Ay
System.err.println("File Length is not known!"); UNLNY,P/!)
} 4J2F>m40
else if(nFileLength == -2) gbv[*R{<%
{ W_n.V" hN
System.err.println("File is not access!"); 72.IhBNtT
} r&~iEO|?\
else kAQ Zj3P]
{
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for(int i=0;i<nStartPos.length;i++) {+mkXp])R
{ 4$w-A-\t
nStartPos = (long)(i*(nFileLength/nStartPos.length)); h#;K9#x6
} aq| [g
for(int i=0;i<nEndPos.length-1;i++) vszAr(
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{ `mTxtuid{
nEndPos = nStartPos[i+1]; RWcQT`
} 69[k
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nEndPos[nEndPos.length-1] = nFileLength;
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} 3;gtuqwD$
} &b8D'XQu
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//启动子线程 j !n> d
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; +~]g&Mf6o
for(int i=0;i<nStartPos.length;i++) e(N <Mf
{ gZSi\m>
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3goJ(XI
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), B\w`)c
nStartPos,nEndPos,i);
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Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); a{.n(M
fileSplitterFetch.start(); _(
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} ->{WO+6(
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), CU&,Kq@
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ,gD i)]
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 2p[3Ap
nEndPos = " + nFileLength); ^yZEpQN_
// fileSplitterFetch[nPos.length-1].start(); h /Nt92
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}PuO$
L
//等待子线程结束 >GRuS\B
//int count = 0; :UciFIa
//是否结束while循环 ((q(Q9(F
boolean breakWhile = false; 7NEn+OI4
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while(!bStop) C" WZsF^3
{ yp/*@8%_E
write_nPos(); J6P
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Utility.sleep(500); /Qy0vAvJ
breakWhile = true; fXj
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for(int i=0;i<nStartPos.length;i++) x N)Ck76
{ N"y4#W(Z@
if(!fileSplitterFetch.bDownOver) "(GeW286k
{ _>I5Ud8(-
breakWhile = false; GK+w1%6)
break; @RW%EXKt
} 4Rq"xYGXh
} `Fr$q1qae{
if(breakWhile) ;GSj}Nq
break; *uR'eXW
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//count++; jT',+
//if(count>4) ?=&*6H_v
// siteStop(); j*}xe'#
} 'z/hj>B<
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System.err.println("文件下载结束!"); Sb.;$Be5g
} 10(N|2'q
catch(Exception e){e.printStackTrace ();} 1)y}.y5S
} r>\.b{wI
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//获得文件长度 }J1#UH_E
public long getFileSize() gC.T5,tn
{ 9L,T @#7
int nFileLength = -1; KC'{>rt7
try{ .E(Ucnz/
URL url = new URL(siteInfoBean.getSSiteURL()); h.NA$E?7
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \Uiw:
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httpConnection.setRequestProperty("User-Agent","NetFox"); TQE_zOa:
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int responseCode=httpConnection.getResponseCode(); gueCP+a_
if(responseCode>=400) }tN"C 3)@
{ udMq>s;
processErrorCode(responseCode); wbTw\b=
return -2; //-2 represent access is error t V</x0#
} WD<M
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String sHeader; /KkUCq2A
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for(int i=1;;i++) ^+88z>
{ U:H*b{`TU
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ~_Aclm?
//Utility.log(in.readLine()); [1Rs~T"
sHeader=httpConnection.getHeaderFieldKey(i); z@ 2NAC
if(sHeader!=null) ^c*'O0y[D
{ WE\V<MGS/
if(sHeader.equals("Content-Length")) u7K0m!
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{ 3LG)s:p$/
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); @>?&Mw\c
break; V<b"jCXI
} IsI\T8yfc
} r>Vgo):s
else MOXDR
break; -g~$HTsGm
} vq|W&
} Y:O%xtGi
catch(IOException e){e.printStackTrace ();} (fC [Y
catch(Exception e){e.printStackTrace ();} *x$\5;A
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Utility.log(nFileLength); *+5AN306
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return nFileLength; @X:P`?("^
} e(sQgtM6
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//保存下载信息(文件指针位置) tJc9R2
private void write_nPos() ^8DC
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{ _rOKif?5
try{ ZhW>H
output = new DataOutputStream(new FileOutputStream(tmpFile)); &q>=6sQvf
output.writeInt(nStartPos.length); ~b*f2UVs
for(int i=0;i<nStartPos.length;i++) VHJOj
{ UW!!!
// output.writeLong(nPos); n>{>3?
output.writeLong(fileSplitterFetch.nStartPos); D{~I
output.writeLong(fileSplitterFetch.nEndPos); 42mdak}\
} ):1NeJOFF
output.close(); A~u-Iv(U
} i!9yN:m0
catch(IOException e){e.printStackTrace ();} ;kY'DKL(
catch(Exception e){e.printStackTrace ();} pno]Bld'z
} zGF_ c9X
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//读取保存的下载信息(文件指针位置) !q mnMY$
private void read_nPos() m
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{ Mz_*`lRN
try{ 1d,;e:=j
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); crG+BFi
int nCount = input.readInt(); ewN!7
nStartPos = new long[nCount]; se2ay_<F+
nEndPos = new long[nCount]; t[|^[%i
for(int i=0;i<nStartPos.length;i++) $5Jo%K%
{ *%bQ p
nStartPos = input.readLong(); u?r=;:N|y
nEndPos = input.readLong(); C;QIp6"1
} `C9/=
input.close(); g4^=Q'j-
} |hk?'WGc`0
catch(IOException e){e.printStackTrace ();} %#7Yr(&
catch(Exception e){e.printStackTrace ();} |]y]K%
} Ksr.'
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private void processErrorCode(int nErrorCode) O0[.*xG
{ bxLeQWr6
System.err.println("Error Code : " + nErrorCode); gTa6%GM>
} ~H`~&?
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//停止文件下载 U 51C /A
public void siteStop() EFSln*|
{ lB3@jF
bStop = true; g:V8"'
for(int i=0;i<nStartPos.length;i++) ?Zu2=<DU
fileSplitterFetch.splitterStop(); n o).70K
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} i^`]TOP
} x=]PE}<E
//负责部分文件的抓取 F6,[!.wl
**FileSplitterFetch.java !0p_s;uu,W
*/ *c<0cHv*
package NetFox; e!BablG[
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import java.io.*; _ljdo`j#N
import java.net.*; >AFX}N#
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public class FileSplitterFetch extends Thread { j6@5"wx
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String sURL; //File URL "'i" @CR
long nStartPos; //File Snippet Start Position wX7|a/|@
long nEndPos; //File Snippet End Position \l$gcFXb
int nThreadID; //Thread's ID ~Q4 emgBD
boolean bDownOver = false; //Downing is over mV\QZfoF
boolean bStop = false; //Stop identical T;{M9W+
FileAccessI fileAccessI = null; //File Access interface 35>VCjCw0
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 8~q%H1[I\N
{ !w+A3Z>V
this.sURL = sURL; D`|.%
this.nStartPos = nStart; =~7%R.U([e
this.nEndPos = nEnd; L!fiW`>0G
nThreadID = id; 39j "z8n
fileAccessI = new FileAccessI(sName,nStartPos);//定位 #a :W
} 8+gti*C?\
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public void run() zzq7?]D
{ *C>B-j$
while(nStartPos < nEndPos && !bStop) w"p,6Ew
{ EKwA1,Xz
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try{ OB-2xmZW
URL url = new URL(sURL); ^Md]e<WAp
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); jSY&P/[xb
httpConnection.setRequestProperty("User-Agent","NetFox"); Woo2hg-ti
String sProperty = "bytes="+nStartPos+"-"; SHM
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httpConnection.setRequestProperty("RANGE",sProperty); KZK9|121
Utility.log(sProperty); }4
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InputStream input = httpConnection.getInputStream(); S}0W<H P
//logResponseHead(httpConnection); W> ZL[BQ
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byte[] b = new byte[1024]; F0cde
int nRead; ?zypF 5a
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) \ow3_^Bk
{ QH_0U`3
nStartPos += fileAccessI.write(b,0,nRead); aFZu5-=x
//if(nThreadID == 1) $?38o6
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 8XwZJ\5
} 0zSRk]i.f
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Utility.log("Thread " + nThreadID + " is over!"); tcovMn'
bDownOver = true; .Pp;%
//nPos = fileAccessI.write (b,0,nRead); OHz>B!`
} P>*g'OK^!G
catch(Exception e){e.printStackTrace ();} :'\4%D=w
} aD2+9?m
} M"q]jeaM
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//打印回应的头信息 `5y+3v~"
public void logResponseHead(HttpURLConnection con) Qv3g
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{ NPN* k].
for(int i=1;;i++) 5<%]6c x}
{ n@3(bl5{
String header=con.getHeaderFieldKey(i); /F>\-
if(header!=null) qDOJ;>I
//responseHeaders.put(header,httpConnection.getHeaderField(header)); l7rGz2:?
Utility.log(header+" : "+con.getHeaderField(header)); 9u3~s<
else (kECV8)2
break; x#mZSSd
} n+5X*~D
} O@.afk"{
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public void splitterStop() wm3fd7T
{ c$<7&{Pb
bStop = true; %-z AV*>
} /}~;
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} !&~8j7{
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/* J- %YmUc)
**FileAccess.java "@xF(fyg
*//文件访问(定位,写) /]/3)@wT
package NetFox; jGB2`^&d
import java.io.*; 9]Q\Pr\Ub$
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public class FileAccessI implements Serializable{ ulnG|3A9
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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 >$gWeFu
RandomAccessFile oSavedFile; t7VX W{3
long nPos; C[j'0@~V:B
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public FileAccessI() throws IOException wW4/]so M
{ "%+C@>`(
this("",0); Q+ ;6\.#r
} A9lnQCsJ
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public FileAccessI(String sName,long nPos) throws IOException P;>8S:8
{ H<dOh5MFh
oSavedFile = new RandomAccessFile(sName,"rw"); ;9,<&fe
this.nPos = nPos; mw<LNnT{8
oSavedFile.seek(nPos); V@jR8zv|_
} I71kFtvcy*
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public synchronized int write(byte[] b,int nStart,int nLen) ^s25z=^t
{ umXa
int n = -1; <C\snB
try{ &Y"u*)bm
oSavedFile.write(b,nStart,nLen); ^ N]u
n = nLen; ya]CxnKR3
} H"4^
catch(IOException e) P@'<OI
{ >JVZ@
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e.printStackTrace (); V7u;"vD
} ' } rUbJo
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return n; f>nj9a5
} QK-_~9V
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} Le"$k su>
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/* ^-T!(P:
**SiteInfoBean.java #KZ6S9>@
*/ ppIMaP
package NetFox; l>)0OP]
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public class SiteInfoBean { |4BS\fx~N
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private String sSiteURL; //Site's URL %qRbl4
private String sFilePath; //Saved File's Path XRVE8v+
private String sFileName; //Saved File's Name TI: -Y@8
private int nSplitter; //Count of Splited Downloading File MIasCH>r
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public SiteInfoBean() JnH>L|G{;%
{//nSplitter的缺省值为5 6rMGlzuRo
//default value of nSplitter is 5 FQ>KbZh
this("","","",5); !'(bwbd
} =@;uDu:Q
s QfP8}U
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Q+gd|^Vc9
{ ^il'Q_-{
sSiteURL= sURL; <SmXMruU
sFilePath = sPath; BO<I/J~b
sFileName = sName; w+gA3Dg
this.nSplitter = nSpiltter; 5mdn77F_
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} k!Nl#.j
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public String getSSiteURL() % \Nfj)9
{ =z^v)=uhp
return sSiteURL; V|xKvH
} 2[: *0 DV#
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public void setSSiteURL(String value) 9{\eE]0
{ xTNWT_d
sSiteURL = value; 6O8'T`F[
} [xq"[*Evv
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public String getSFilePath() #R v&b@K
{ JnE\E(ez
return sFilePath; ';4DUhp
} \TqKm
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public void setSFilePath(String value) ~E&drl\
{ Rda o
sFilePath = value; 'eg?W_zu
} a}eM ny
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public String getSFileName() pn?c6KvO
{ TWE$@/9 )g
return sFileName; xo/[,rR
} SOQm>\U'i
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public void setSFileName(String value) xB"o
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{ Q| >
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sFileName = value; |Z}uN!Jm
} q5J6d+
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public int getNSplitter() g(m3
&
{ b$)b/=2
return nSplitter; M?pu7wa
} NidG|Yg~Z
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public void setNSplitter(int nCount) R4=n">>Q
{ Rg~ ~[6G>
nSplitter = nCount; -#T?C]}
} DPR=Xls
} }l{r9ti
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/* hp?hb-4l
**Utility.java >AIkkQT
*/ gf2<dEff
package NetFox; @A6P[r
o(5Xj$Z
l(|@ dp
public class Utility { >(+g:p
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public Utility() .z7%74p
{ @WVpDhG
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} @mM'V5_#
,&$=2<Dx
//线程睡眠 c0M=T
public static void sleep(int nSecond) 3]Rb2$p[=
{ 4r5trquC
try{ f%ude@E3
Thread.sleep(nSecond); b#cXn4<