/* w> Tyk#7lw
**SiteFileFetch.java oq=?i%'>
*/ BM|-GErE
package NetFox; 6U;Jg_zS
import java.io.*; Cf.pTYSl
import java.net.*; "Czz,;0
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public class SiteFileFetch extends Thread {
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SiteInfoBean siteInfoBean = null; //文件信息Bean 4RK.Il*d
long[] nStartPos; //开始位置 9\AEyaJFZ
long[] nEndPos; //结束位置 ?l)}E
FileSplitterFetch[] fileSplitterFetch; //子线程对象 v< 65(I>
long nFileLength; //文件长度 I>A^5nk
boolean bFirst = true; //是否第一次取文件 V-?sek{;
boolean bStop = false; //停止标志 U@o2gjGN
File tmpFile; //文件下载的临时信息 m1^dT_7Z
DataOutputStream output; //输出到文件的输出流 n/KI"qa]9
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1?/5A|?V4+
public SiteFileFetch(SiteInfoBean bean) throws IOException ,Hik (22
{ yRgDhA
siteInfoBean = bean; K$Mx}m7l
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Gk{
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tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); R-g>W
if(tmpFile.exists ()) _9}x2uO~
{ UPfFT^=y
bFirst = false; J]n7| L
read_nPos(); O4 +SD
} ef;&Y>/
else b9W<1eqF
{ afxj[;p!
nStartPos = new long[bean.getNSplitter()]; m~= ]^e
nEndPos = new long[bean.getNSplitter()]; )z?&"I
} 1jZDw~
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} q5?rp|7D
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public void run() \,@Yl.,+
{ >,]
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//获得文件长度 Ovaj":L
//分割文件 @w#gRQCl
//实例FileSplitterFetch }\`-G+i{W
//启动FileSplitterFetch线程 1OiZNuI:E
//等待子线程返回 /VhE<}OtH
try{ [T.(MbP
if(bFirst) q/rHHuY}
{ V<~_OF
nFileLength = getFileSize(); v)C:E 9!|
if(nFileLength == -1) OIXAjU*N
{ .^)C:XiW
System.err.println("File Length is not known!"); zP{<0o
} 5ykk11!p$
else if(nFileLength == -2) ERX|cc
{ .qqb>7|q
System.err.println("File is not access!"); :C|>y4U&(s
} _Pfx_+
else :~0^ib<v;
{ jOm&yX
for(int i=0;i<nStartPos.length;i++) .Kh(F6
s
{ p~d)2TC4#
nStartPos = (long)(i*(nFileLength/nStartPos.length)); >jrz;r
} 3@Zz-~4Td
for(int i=0;i<nEndPos.length-1;i++) -}N\REXE
{ *OGXu07 !
nEndPos = nStartPos[i+1]; P/gb+V=g!
} iRj x];:Vu
nEndPos[nEndPos.length-1] = nFileLength; 0oi5]f6g?8
} Z#TgFQ3u
} |bG [TOa
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//启动子线程 YCB 3
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Y9H *S*n
for(int i=0;i<nStartPos.length;i++) MMxoKL
{ I3zitI;
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), CK!pH{n+
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5rHnU<H@y
nStartPos,nEndPos,i); G|PIH#
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); )ejXeg
fileSplitterFetch.start(); dn)tP6qc/
} ZAo)_za&mH
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), dS;|Kl[Om
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); qLW-3W;WUH
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ">D(+ xr!)
nEndPos = " + nFileLength); YZ%f7BUk
// fileSplitterFetch[nPos.length-1].start(); 1(;33),P8
++{+
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//等待子线程结束 o%~K4 M".
//int count = 0; C O%O<_C
//是否结束while循环 73sAZa|
boolean breakWhile = false; *(SBl}f4l
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while(!bStop) D16;6K'{
{ Ko]h r
write_nPos(); Y'a(J 7
Utility.sleep(500); 1'U%7#;E
breakWhile = true; X8l1xD
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for(int i=0;i<nStartPos.length;i++) ,cO)Sxj
{ 2,e|,N"zN
if(!fileSplitterFetch.bDownOver) j&G~;(DY
{ wsGq>F~
breakWhile = false; (_n8$3T75
break; o Jp_c
} MVL }[ J
} +U/ "F|M
if(breakWhile) ?oDfI
break; Xiedg y
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//count++; I8%'Z>E(
//if(count>4) ; o@`l$O
// siteStop(); "N/K*
} Vq7
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System.err.println("文件下载结束!"); rMFZ#38d
} 7<Js'\Z
catch(Exception e){e.printStackTrace ();} (X7yNIPfA
} d\Z4?@T<5
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//获得文件长度 `IRT w"
public long getFileSize() ]{U*+K%,J
{ m)RxV@
int nFileLength = -1; u]-El}*[
try{ F"#*8P
URL url = new URL(siteInfoBean.getSSiteURL()); 43Uy<%yb>}
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %7wzGtM]ps
httpConnection.setRequestProperty("User-Agent","NetFox"); &ziB#(&:H
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int responseCode=httpConnection.getResponseCode(); M_ cb(=ey
if(responseCode>=400) A"ph!* i{
{ F7Yuky
processErrorCode(responseCode); kV%y%l(6
return -2; //-2 represent access is error pG=zGx4
} "Ksd9,J\b
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String sHeader; /38Pp%
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for(int i=1;;i++) }(O
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{ t$D[,$G9
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); au~gJW-
//Utility.log(in.readLine()); 4[j) $!l`
sHeader=httpConnection.getHeaderFieldKey(i); g+{MvSj$
if(sHeader!=null) @d9*<>@:
{ Du4?n8 o
if(sHeader.equals("Content-Length")) U.)eJ1a
{ uty]-k
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); yE/I)GOQjs
break; Nq1RAM
} V:np cKpu
} #f@53Pxb
else $S=OmdgR
break; SK2pOZN
} 05DtU!3O
} ,
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catch(IOException e){e.printStackTrace ();} PSvRO%&
catch(Exception e){e.printStackTrace ();} A#\X-8/
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Utility.log(nFileLength); }0*7bb
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return nFileLength; !b
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} +<#-52br\
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//保存下载信息(文件指针位置) {K}+$jzGVt
private void write_nPos() ?/ g(Y
{ *9 xD]ZZF
try{ 4cL=f
output = new DataOutputStream(new FileOutputStream(tmpFile)); 7X"cu6%\
output.writeInt(nStartPos.length); e
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for(int i=0;i<nStartPos.length;i++) Il[WXt<S
{ e&kg[jU
// output.writeLong(nPos); jk?(W2c#{
output.writeLong(fileSplitterFetch.nStartPos); WbF\=;$=7
output.writeLong(fileSplitterFetch.nEndPos); 4+Kc
} 0J B"@U&-
output.close(); gqamGLK
} bEJZh%j!
catch(IOException e){e.printStackTrace ();} "5FeP;
catch(Exception e){e.printStackTrace ();} #Ki@=*
} hHQt4 r'd
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//读取保存的下载信息(文件指针位置) XPSWAp)
private void read_nPos() ]y/:#^M+
{ nfEk ,(:
try{ ewR0e.g
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); HvU)GJ u b
int nCount = input.readInt(); [
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nStartPos = new long[nCount]; Uk#1PcPd
nEndPos = new long[nCount]; Y-9F*8<
for(int i=0;i<nStartPos.length;i++) Spb'jAKj'
{ YrX{,YtiX
nStartPos = input.readLong(); v,! u{QP
nEndPos = input.readLong(); =>Efrma
} O@VmV>m
input.close(); qIl@,8T
} .)Q'j94Q
catch(IOException e){e.printStackTrace ();} }0o0 "J-$
catch(Exception e){e.printStackTrace ();} Z~
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} }T@AoIR0t
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private void processErrorCode(int nErrorCode) 2epL!j)Wh
{ rx<fjA%
System.err.println("Error Code : " + nErrorCode); P]G2gDO
} !|]%^G
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//停止文件下载 gw-l]@;1
public void siteStop() V_:/#G]jeG
{ wiZK-#\x
bStop = true; *Co+UJjT
for(int i=0;i<nStartPos.length;i++) &e{&<ZVR
fileSplitterFetch.splitterStop(); 6mZFsB
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} 1
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} X#fI$9a
//负责部分文件的抓取 %~@}wHMB
**FileSplitterFetch.java 5u8 YHv
*/ Xv6s,< #\
package NetFox; i4l?q#X
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import java.io.*; @jfd.? RK!
import java.net.*; N?aU<-Tn
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public class FileSplitterFetch extends Thread { dPS}\&1
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String sURL; //File URL zKR_P{W>^
long nStartPos; //File Snippet Start Position \
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long nEndPos; //File Snippet End Position *5 5yF`
int nThreadID; //Thread's ID H}d&>!\}F
boolean bDownOver = false; //Downing is over TMbj]Mso
boolean bStop = false; //Stop identical D(y=0),
FileAccessI fileAccessI = null; //File Access interface h[Hw9$31
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 3AWg 43L7
{ * @dqAr %
this.sURL = sURL; {sbQf7)
this.nStartPos = nStart; RszqDm
this.nEndPos = nEnd; mZm wCS8
nThreadID = id; 1^vN?#Kt
fileAccessI = new FileAccessI(sName,nStartPos);//定位 P9gIKOOx#4
} `CO?} rW
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public void run() S?&ntUah
{ `Q,03W#GJ%
while(nStartPos < nEndPos && !bStop) tONxV`
{ hH>t
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try{ Go8 m
URL url = new URL(sURL); >Qr(#Bt)
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \7jK6;R<
httpConnection.setRequestProperty("User-Agent","NetFox"); S'q (Qo
String sProperty = "bytes="+nStartPos+"-"; nF]lSg&]X
httpConnection.setRequestProperty("RANGE",sProperty); =98@MX%P
Utility.log(sProperty); JS}iNS'X
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InputStream input = httpConnection.getInputStream(); y]+q mNw"+
//logResponseHead(httpConnection); x ^&D8&4^
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byte[] b = new byte[1024]; r1f##
int nRead; =XuBan3B>
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) XX+%:,G
{ M, f6UYo=
nStartPos += fileAccessI.write(b,0,nRead); Eu2@%2}P
//if(nThreadID == 1) 0@k)Cz[0;
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); f!AcBfaLr
} R^4JM,v9x`
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Utility.log("Thread " + nThreadID + " is over!"); X|++K;rtfE
bDownOver = true; ?U$H`[VF}
//nPos = fileAccessI.write (b,0,nRead); K 0R<a~
} yL{X}:;}
catch(Exception e){e.printStackTrace ();} [,JUC<
} ZjLu qo
} }f45>@uMW
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//打印回应的头信息 ^VabXGzo#
public void logResponseHead(HttpURLConnection con) xA/Ein0
{ F/}(FG<'>I
for(int i=1;;i++) M<$a OW0
{ Mwm9{1{
String header=con.getHeaderFieldKey(i); 2"~|k_
if(header!=null) I54`}Npp
//responseHeaders.put(header,httpConnection.getHeaderField(header)); xO3-I@
Utility.log(header+" : "+con.getHeaderField(header)); 2z#gn9Wb
else _!_%Afz
break; TuR.'kE@
} v@n0ma=
} IHC
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public void splitterStop() \?EnTu.
{ BeFCt;
bStop = true; 'z\$.L
} 'Sk-L
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} 3pU/Zbb,:
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/* [cfKvROG
**FileAccess.java MbbKo-7F$
*//文件访问(定位,写) ]&+,`1_q
package NetFox; cI#! Y
import java.io.*; )+L.$h
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public class FileAccessI implements Serializable{ mssCnr;
SobOUly5{
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 9lU"m_
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RandomAccessFile oSavedFile; v#Xl
long nPos; CQ;.}=j
,
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public FileAccessI() throws IOException ~Y)h[
{ Tup2;\y
this("",0); Z4VNm1qs
} VV'*3/I
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public FileAccessI(String sName,long nPos) throws IOException J}?:\y<
{ P,RdYM06
oSavedFile = new RandomAccessFile(sName,"rw"); myq:~^L
;
this.nPos = nPos; P70]Ju
oSavedFile.seek(nPos); hH.X_X?d%
} A(2!.Y
2?*
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public synchronized int write(byte[] b,int nStart,int nLen) gR#lRA/
{ GeydVT-
int n = -1; f=,(0ygt/
try{ ]Oh8LcE#BF
oSavedFile.write(b,nStart,nLen); 'h*^;3@*
n = nLen; V7}3H2]^
} LkK# =v
catch(IOException e) oY(q(W0ze
{ HAca'!p
e.printStackTrace (); aK+jpi4?
} ZvVrbj&
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return n; VdC,M;/=Z
} aMq|xHZ
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} K.l7yBm
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/* .?^a|]
**SiteInfoBean.java mSFh*FG
*/ D *Hy 2eZ.
package NetFox; zQ>|`0&8
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public class SiteInfoBean { fBw"<J{
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private String sSiteURL; //Site's URL WJ[ybzVj
private String sFilePath; //Saved File's Path yd+.hg&J
private String sFileName; //Saved File's Name m2esVvP
private int nSplitter; //Count of Splited Downloading File UZD Xv=r|
XUK!1}
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public SiteInfoBean() x(r~<a[
{//nSplitter的缺省值为5 Z!eW_""wp
//default value of nSplitter is 5 \#%1t
this("","","",5); -+)06BqF}
} XhEJF !
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Eb.k:8?Tn
{ X:kqX[\>
sSiteURL= sURL; w;=g$Bn
sFilePath = sPath; kl+^0i
sFileName = sName; Spm7kw
this.nSplitter = nSpiltter; _GF{Duxh
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} ih\=mB
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public String getSSiteURL() -Ed<Kl
{ MIx,#]C&
return sSiteURL; X :wfmb
} :rzq[J^
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public void setSSiteURL(String value) viXt]0
{ jBLLx{
sSiteURL = value; hztxsvw
} QFX/x
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public String getSFilePath() )8@|+'q
{ _|f_%S8a_=
return sFilePath; ;,7/> Vt
} #sHt3z)6I
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public void setSFilePath(String value) F`8B PWUY
{ E=$li
sFilePath = value; %k=c9ll@:
} >p?Vv0*
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public String getSFileName() }[mLtv%&
{ S!6 ? b5
return sFileName; HF;$Wf+=J
} u6MHdCJ0y
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public void setSFileName(String value) eo&^~OVT
{ c\DMeYrg
sFileName = value; dBb
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} \ Dccf_(Pb
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public int getNSplitter() .8]buM5_G
{ vp&N)t_
return nSplitter; U>0~ /o
} Lc! t
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public void setNSplitter(int nCount) .
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{ 0@>
nSplitter = nCount; x%`tWE|
} Wf{&D>
} y"Ios:v@-
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/* B+4WnR1%T
**Utility.java +HkEbR'G0
*/ I''X\/|
package NetFox; 4WXr~?Vq9
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public class Utility { o-+H-
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public Utility() "?S>}G\
{ @S)p{T5G
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} OLE@35"v]
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//线程睡眠 ;7U"wI_~c
public static void sleep(int nSecond) Jix;!("
{ _#y=T20'3
try{ F0KNkL>&g
Thread.sleep(nSecond); S.|%dz
} '<1Q;3Ho
catch(Exception e) eCwR
}m?_
{ :RDQP
e.printStackTrace (); /NUu^ N
} $D;-;5[-/r
} paZcTC
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//日志 JlE b
public static void log(String sMsg) u&<