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/* .N~qpynY **SiteFileFetch.java n=v4m_e */ it!i'lG package NetFox; !fdni}f) import java.io.*; {#M=gDhbX import java.net.*; qmUq9bV 9_IR%bm $IUP; public class SiteFileFetch extends Thread { DJgk"' Gjuc"JR7 wqo2iRql SiteInfoBean siteInfoBean = null; //文件信息Bean ?QO)b9 long[] nStartPos; //开始位置 j}YZl@dYV long[] nEndPos; //结束位置 @(.?e< FileSplitterFetch[] fileSplitterFetch; //子线程对象 (zkh`8L long nFileLength; //文件长度 01I5,Dm boolean bFirst = true; //是否第一次取文件 R`=IYnoOA boolean bStop = false; //停止标志 <x@\3{{U File tmpFile; //文件下载的临时信息 e2w$":6> DataOutputStream output; //输出到文件的输出流 ixN>KwH V M[9!:
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) K8*QS_* public SiteFileFetch(SiteInfoBean bean) throws IOException
Z4'"* { u&l2s&i siteInfoBean = bean; fX G+88:2 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }]sI?&xB tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ><iE VrpN if(tmpFile.exists ()) #I9|>XE1 { 6Nx T W bFirst = false; dtjaQsJM^ read_nPos(); 2a*1q#MpAt } ,
6\i else ;}IF'ANA { ~Av]LW nStartPos = new long[bean.getNSplitter()]; SqY;2: nEndPos = new long[bean.getNSplitter()]; #m
3WZ3t$ } "d'xT/l
" yZI4%fen G1B~?i2$ ? G~)jk+Qq } 'ntb.S) *sf9(%j ] d| -r:4 public void run() :YjOv { "Ks%! //获得文件长度 !Dkz6B* //分割文件 mh44 //实例FileSplitterFetch 7d/wT+f //启动FileSplitterFetch线程 n);2b\& //等待子线程返回 S|;a=K&hS try{ XRs/gUT if(bFirst) Ed#%F-1sX { EH3jzE3N nFileLength = getFileSize(); g2C-)*'{yh if(nFileLength == -1) `ZN@L<I6 { =Z/'|;Vd_x System.err.println("File Length is not known!"); ` 2|~Z
H } hX)r%v: else if(nFileLength == -2) =pWpHbB. { fh$U" System.err.println("File is not access!"); En6fmEn&;o } 5`oor86 else W_8FzXA { =YA%=
d_ for(int i=0;i<nStartPos.length;i++) 'DsfKR^s { &0f7>.y nStartPos = (long)(i*(nFileLength/nStartPos.length)); [k-7Kq } 8q7KqYu for(int i=0;i<nEndPos.length-1;i++) <t]c' { %H<w.]> nEndPos = nStartPos[i+1]; _KmpC>J+ } eJ{"\c( nEndPos[nEndPos.length-1] = nFileLength; K *vNv4 } /Re1QS } UkNC|#l) G+[>or} aC3\Hs //启动子线程 ThWZ>hyJ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ?O4Dhu for(int i=0;i<nStartPos.length;i++) DJ}xD&G { ^.kas7< fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), qa^x4xZM siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ;~~Oc nStartPos,nEndPos,i); a,cDj Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7u5B/M! fileSplitterFetch.start(); 9][Mw[k> } c}Z,xop<P{ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), rA*,)I_v@ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); AG}'
W // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 9[T#uh!DC nEndPos = " + nFileLength); JPQ02&e // fileSplitterFetch[nPos.length-1].start(); Xki/5roCQ| 8SAz,m!W) q*{"6"4( //等待子线程结束 UMhM8m!=o //int count = 0; w?M*n<)
O //是否结束while循环 +\Q6Onqr boolean breakWhile = false; .E;6Xx_+r od^ha jn}6yXB while(!bStop) }r^MXv ~( { gK)B3dH*& write_nPos(); tY# F8a& Utility.sleep(500); 5@[%P= breakWhile = true; A9l^S|r
}f&7<E )CR8-z1` for(int i=0;i<nStartPos.length;i++) t1C{ { 1b|<
if(!fileSplitterFetch.bDownOver) NlcWnSv { ,7%(Jj$
^ breakWhile = false; ;o^m"I\y break; 1}ZBj%z4l } /4~RlXf@ } I}:>M!w if(breakWhile) RB &s$6A break; ?!~au0 jHz] gP1$#KgU //count++; UO:>^,(j //if(count>4) BM&'3K_y // siteStop(); Q ;k_q3 } v?LJ_>hw*T +Z;0"'K'e +'#d*r91@ System.err.println("文件下载结束!"); 3^
Z tIZ } tQFFt,) catch(Exception e){e.printStackTrace ();} IwH
,g^0\ } Jb
tbW&EH GtGToI :cC`wX$ //获得文件长度 {Z?!*Ow public long getFileSize() 7H>dv' { R2J3R5S=[ int nFileLength = -1; $(CHwG- try{ |g;XC^!%=o URL url = new URL(siteInfoBean.getSSiteURL()); sJM}p5V HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); IBF>4qm" httpConnection.setRequestProperty("User-Agent","NetFox"); UT{Nly8u pwZ &2&| `HJw wKd int responseCode=httpConnection.getResponseCode(); W\KZFrV@ if(responseCode>=400)
@ics { I"
j7 processErrorCode(responseCode); =)I{KT:y return -2; //-2 represent access is error O/-OW: 03 } @K+u+}
R rW6w1 *v5y]E%aW String sHeader; a9qZI 'Gt`3qG =G72`]#- for(int i=1;;i++) cxv)LOl- { pEaH^(I* //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); }oU&J81 //Utility.log(in.readLine()); S7SPc sHeader=httpConnection.getHeaderFieldKey(i); WYzY#-j if(sHeader!=null) e4`KnHsL { QB@*/Le if(sHeader.equals("Content-Length")) rU~"A { GYs4#40 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); jyT(LDsS break; VI+Y 4T@ } ePY K^D } {MEU|9@
Y else ,`Mlo break; 'V>+G>U } d
z\b]H] } 2'}2r ~6 catch(IOException e){e.printStackTrace ();} =VSieh catch(Exception e){e.printStackTrace ();} s3knh&'zb 02+^rqIx5 r-0
7!A Utility.log(nFileLength); 1%:A9%O)t Ud9\;Qse ]E3g8?L return nFileLength; AP~!YwLW } pKJ[e@E^ \C6m.%%={R (J;?eeP //保存下载信息(文件指针位置) 50Jr(OeU< private void write_nPos() ujSzm=_P { Bh.'%[', try{ 'qD9kJ` output = new DataOutputStream(new FileOutputStream(tmpFile)); He@= bLLa output.writeInt(nStartPos.length); *K 7L5. for(int i=0;i<nStartPos.length;i++) (l^lS=x { :Oj+Tc9A // output.writeLong(nPos); <;T7qEIlo output.writeLong(fileSplitterFetch.nStartPos); @kK=|(OB' output.writeLong(fileSplitterFetch.nEndPos); s1FBz)yCY= } D|BN_ai9 output.close(); PDsLJ|:yL } N1-LM9S catch(IOException e){e.printStackTrace ();}
Ay`a>:p catch(Exception e){e.printStackTrace ();} <wA_2S
Y } Jzj~uz bpILiC N?Z?g_a8 //读取保存的下载信息(文件指针位置) !6%mt} h private void read_nPos() @rF\6I { u`~{:V try{ pJ(l=a DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); `fRy"44nR int nCount = input.readInt(); FSB$D)4z>b nStartPos = new long[nCount]; g\Zk*5( nEndPos = new long[nCount]; aD^MoB3 for(int i=0;i<nStartPos.length;i++) g:)vthOs { +Oscy-; nStartPos = input.readLong();
1W8W/Y=hT nEndPos = input.readLong(); O^:h _L } %qHT!aP input.close(); = V , _ } b(VU{cf2d catch(IOException e){e.printStackTrace ();} #(H_w4 catch(Exception e){e.printStackTrace ();} R}VL UL$ } -a[{cu{ >tzXbmFp; E6gEP0b private void processErrorCode(int nErrorCode) *LVM}| f { "10VN*)J} System.err.println("Error Code : " + nErrorCode); cmeyCyV* } q ha1b$ {P5@2u6S m0,9yY::wj //停止文件下载 .R'i=D`Pz public void siteStop()
i=D,T[|>a { ^&.?kJM bStop = true; -T8
gV1*(< for(int i=0;i<nStartPos.length;i++) 1sJN^BvuG fileSplitterFetch.splitterStop(); lN'/Z&62 ""d>f4,S 7y\g~?5N } a*hThr+$M } 6Ts`5$e //负责部分文件的抓取 "=(;l3-o **FileSplitterFetch.java {Jc!T:vJ */ /z5lxS@# package NetFox; #V6
-* m5pVt4 }}_uN-m import java.io.*; *PEuaRDN import java.net.*; o0L#39`'g A] 9JbNV bAiw]xi public class FileSplitterFetch extends Thread { j1<1D@UO {p
0'Lc<3n Z]f2& String sURL; //File URL x,dv~QU long nStartPos; //File Snippet Start Position q@9i3*q; long nEndPos; //File Snippet End Position 3Y-v1.^j int nThreadID; //Thread's ID H~i],WD boolean bDownOver = false; //Downing is over 81cmG`G7 boolean bStop = false; //Stop identical q1Sm#_7 FileAccessI fileAccessI = null; //File Access interface }D+8K zf~zYZSr t]
wM_]+ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException to 6Q90( { y7OG[L/ this.sURL = sURL; &*aU2{,s,; this.nStartPos = nStart; @E2nF|N this.nEndPos = nEnd; ntV>m*^ nThreadID = id; NO^t/(Z fileAccessI = new FileAccessI(sName,nStartPos);//定位 ]LTc)[5Zj } <h=M
Rw,l ?<'W~Rm6n c!Vc_@V, public void run() J36@Pf]h { S(i(1Hs. while(nStartPos < nEndPos && !bStop) sV[Z|$&Z { Xb*_LZAU hhAC@EGG M[u3]dN try{ 4d
G- URL url = new URL(sURL); "S`wwl HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); vs|6ww httpConnection.setRequestProperty("User-Agent","NetFox"); #\BI-zt String sProperty = "bytes="+nStartPos+"-"; o(/ia3 httpConnection.setRequestProperty("RANGE",sProperty); ?w/nZQWi Utility.log(sProperty); .~L4#V{c~ zI! R-Nb F |81i$R InputStream input = httpConnection.getInputStream(); +c`C9RXk //logResponseHead(httpConnection); v6?\65w,| m1i+{(( yQ{_\t1Wd byte[] b = new byte[1024]; R"gm]SQ/ int nRead; P&0cF{ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) lhl0 { JK"uj% nStartPos += fileAccessI.write(b,0,nRead); .oj" ru //if(nThreadID == 1) 43=-pyp // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?]D+H%3[$i } y%bqeo
L~ Os 2YZ<t \BaN5+B6 Utility.log("Thread " + nThreadID + " is over!"); BJxmW's/ bDownOver = true; &W+G{W{3 //nPos = fileAccessI.write (b,0,nRead); G!Oq>7 } hX| UE catch(Exception e){e.printStackTrace ();} 8;\tP29 }
jnzz~: } KH>sCEt 0C+yq'D~[ 3dDQz# //打印回应的头信息 t0H=NUP8 public void logResponseHead(HttpURLConnection con) irb.F>(x { h$ iyclX for(int i=1;;i++) jQeE07g { B9)qv>m String header=con.getHeaderFieldKey(i); p]|ME if(header!=null) ":#x\; //responseHeaders.put(header,httpConnection.getHeaderField(header)); w^E]N Utility.log(header+" : "+con.getHeaderField(header)); GdeR#%z else 4*XP;` break; A|_%'8 } [I<'E
LX } MQH8Q$5D O\F^@;]F6 *Gh8nQbh public void splitterStop() ajW$d! { i^ cM@? bStop = true; i-s?"Fk } W<N QUf[= 7K]U|K# D3AtYt } < Gy!i/ o p5^9`" ^=Tu>{uD /* h8= MVh(I **FileAccess.java C+]q *//文件访问(定位,写) x*"pDI0k) package NetFox; OjlB0 import java.io.*; K^&
]xFW k&_u\D"^"% MN M> public class FileAccessI implements Serializable{ vua1iN1 CE7pg&dJ)i //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 e9hVX[uq RandomAccessFile oSavedFile; 6dR-HhF long nPos; `Y({#U 9 c5G6n0 ah"MzU) public FileAccessI() throws IOException KYmWfM3^ { M|E2&ht this("",0); p9 ,\ {Is } bb0McEQy $s(4?^GP qTa]th; public FileAccessI(String sName,long nPos) throws IOException lp0T\
% { ))69a oSavedFile = new RandomAccessFile(sName,"rw"); ])ALAAIc- this.nPos = nPos; 031.u<_ oSavedFile.seek(nPos); I%Po/+|+ } >-|90CSdSJ <
J<;?%] 0m YZ7S5g public synchronized int write(byte[] b,int nStart,int nLen) g9weJ6@}M { +yP[(b/ int n = -1; ZJI1NCBZ try{ Up/u|A$0V oSavedFile.write(b,nStart,nLen); JU=\]E@8c n = nLen; C(1A8 } >?{iv1 catch(IOException e) XG\a-dq[ { Vh.;p.!e e.printStackTrace (); Wh'_slDH+ } ;GgQ@s@ ;aK !eD$ u388Wj
return n; gQpD]p%k } SL\y\GaV zr; Y1Xt4 HHIUl,P } <j1d~XU} l;{N/cS NtA|#"^ /* ZG\ I1 **SiteInfoBean.java Z>w^j.( */ <E7Vbb9* package NetFox; j
zmSFK g* \`Ph=lJO 6aF'^6+a public class SiteInfoBean { qvfAG 0p (|a$N.e&K x+*L5$;h private String sSiteURL; //Site's URL o~.o^0Y private String sFilePath; //Saved File's Path $YGIN7_Gg private String sFileName; //Saved File's Name U3|&Jee private int nSplitter; //Count of Splited Downloading File y%IG:kZ, @(,{_c] '^oGDlkr H public SiteInfoBean() ahi57r[ {//nSplitter的缺省值为5 C@UJOB //default value of nSplitter is 5 6PQJgki this("","","",5); z5yb$-j } =6Kv` kO,VayjT wUIsi<Oj public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) /VmCN]2AZ { H ?=pWB sSiteURL= sURL; '[=yfh sFilePath = sPath; X4P}aC sFileName = sName; UU;-q_H6 this.nSplitter = nSpiltter; z7t'6Fy9' ;oY(I7 s7UhC.>'@ } JJ
N(M*; e1 {t0f B~_,>WG public String getSSiteURL() cpF1Xp vT { -|k&L}\OB0 return sSiteURL; CNpe8M=/3 } HV$9b~( z7@(uIl=X Ah" 'hFY public void setSSiteURL(String value) 4*D fI { Kixr6\ sSiteURL = value; N&x WHFn]C } m>abK@5na 7{Ki;1B[w P"V{y|2 public String getSFilePath() ,.6J6{ { }W__ffH return sFilePath; J2oWssw" } 8=n9hLhqo lZS_n9Sc +C'TW^ public void setSFilePath(String value) >TlW]st { bQ^DX `o6P sFilePath = value; !0!U01SWa }
/.| A [yYH>~SuwZ :Er^"9'A2 public String getSFileName() :!+}XT7)/ { u^aFj%}]L return sFileName; >2| [EZ } ]e@0T{! !e:iB7< {;Y 89&*R public void setSFileName(String value) ==h|+NFa { :~ZqB\>i sFileName = value; eC+"mhB } QX/X {h6 *%OYAsc Hyq@O8 public int getNSplitter() 't0+:o">: { I+Ncmg )> return nSplitter; Xx3g3P } w'oo-.k z_:eM7]jv bVa+kYE public void setNSplitter(int nCount) *]}CSZ[> { {uaZ<4N. nSplitter = nCount; 4GU/V\e| } eq@am(#&kY } W.#}qK"
q G%P>Ag Hhe{ +W@~ /* yyY~ *Le **Utility.java lC'{QUC */ u0bfX,e2U package NetFox; ?Do^stq'4 c-4m8Kg?L b!'l\~`{i public class Utility {
N|!MO{sB biK)&6|`sa .>mH]/]m public Utility() ]>R`;"( {
JmU<y V;h=8C 5J e/"yGQu } X q}Ucpj HE#,(;1i //线程睡眠 7BL|x public static void sleep(int nSecond) Q00R<hu@F { uipq=Yp. try{ z-EwXE Thread.sleep(nSecond); B ~fSMB6h } csH2_+uG catch(Exception e) ?muDTD%c { di6B!YQP e.printStackTrace (); Awu$g. } !dU9sB2 }
]pW86L% '|vD/Qf=& //日志 B.89_!/:p public static void log(String sMsg) A6Ghj{~ { /y}"M System.err.println(sMsg); "+=Pp } L'zE<3O'3 uije#cj#O ,:D=gQ@` public static void log(int sMsg) a}:A, t<6 { v8ba~ System.err.println(sMsg); 2
;JQX! } Vy-28icZ` } '3A+"k-}mh R/^@cA e]lJqC /* '
|&>/dyq **TestMethod.java "-w^D!C */ rRB~=J" package NetFox; \HAJ\9*w) 95=gY kOw=c Gt public class TestMethod { J,f/fPaf7 z{ptm7 t)YUPDQ@J public TestMethod() <fN;
xIB { ///xx/weblogic60b2_win.exe ev9;Ld try{ "\e:h|
.G SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); $}t=RW //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ~12_D'8D[ SiteFileFetch fileFetch = new SiteFileFetch(bean); cA D[3b[Gk fileFetch.start(); N_ UQ } tAF]2VV(e catch(Exception e){e.printStackTrace ();} \tY"BC4. i+g~ Uj}h ,V,f2W 4 } =I2@/, 4SgF,ac3r ?w-1:NWjt public static void main(String[] args) I%oRvg|q { eP "`,< new TestMethod(); XAe\s` } \V,c]I
} "!O1j
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