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/* o'}Z!@h **SiteFileFetch.java [r<
Y0|l,m */ %!hA\S package NetFox; ()IgSj?, import java.io.*; #(Yb
lY import java.net.*; qP .VK?jF| );.<Yf{c qaSv]k. public class SiteFileFetch extends Thread { 1p5q}">z 93p9?4;n- RkXLE"G' SiteInfoBean siteInfoBean = null; //文件信息Bean 'w$we6f long[] nStartPos; //开始位置 apWrcaj long[] nEndPos; //结束位置 @Oc}\Rg FileSplitterFetch[] fileSplitterFetch; //子线程对象 N|#x9mE long nFileLength; //文件长度 V9 t:JY boolean bFirst = true; //是否第一次取文件 ojs/yjvx boolean bStop = false; //停止标志 E":":AC# File tmpFile; //文件下载的临时信息 k}a!lI: DataOutputStream output; //输出到文件的输出流 ?B31t9 YwTtI ID% //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _@3O` public SiteFileFetch(SiteInfoBean bean) throws IOException 'A@Oia1;{ { 9mtC"M<
siteInfoBean = bean; %RF //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); BOcEL%+ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); )UU6\2^ if(tmpFile.exists ()) &(U=O?r7 { Ita!07 bFirst = false; M(f*hOG{Y read_nPos(); ha'm`LiX
} tp3N5I else |`9zE] { a{YVz\?d} nStartPos = new long[bean.getNSplitter()]; R$'nWzX# nEndPos = new long[bean.getNSplitter()]; sBG(CpQ } gYIYA"xN` oM7-1O ,T>2zSk (HgdmN% } K1:)J.ca_ w9?wy#YI "Q!{8 9Y public void run() +?eAaC7s { K?<Odw'k //获得文件长度 ov.rHVeI //分割文件 L7'X7WYf& //实例FileSplitterFetch 46JP1 //启动FileSplitterFetch线程 \}&w/.T //等待子线程返回 dufHd try{ F,$$N> if(bFirst) AyXKhj#Ml { 5N}|VGN nFileLength = getFileSize(); BP><G^ if(nFileLength == -1) y,eoTmaI { {*
_ W System.err.println("File Length is not known!"); uPD_s[ } \nt'I;f else if(nFileLength == -2) WED7]2> { gM]/Y6*$b System.err.println("File is not access!"); \FX3=WW } xg!\C@$ else VH*(>^OfF { 5 `mVe0uI for(int i=0;i<nStartPos.length;i++) i;
uM!d} { 6m<9^NT nStartPos = (long)(i*(nFileLength/nStartPos.length)); ;{u#~d} } (
I~XwP& for(int i=0;i<nEndPos.length-1;i++) )u:8Pv { 6q7Y`%j nEndPos = nStartPos[i+1]; iFT3fP'> 5 } 4SO{cst nEndPos[nEndPos.length-1] = nFileLength; : .eS| } *J-jr8& } N^j''siB z@LP9+?dE #.K&]OV/88 //启动子线程 AYtcN4\/ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; U}5KAi 9Z for(int i=0;i<nStartPos.length;i++) |-?b)yuAz {
c'4 \F9 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x?$Y<=vT siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),
#rC+13 nStartPos,nEndPos,i); P=i |{vv( Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (bXp1*0 ; fileSplitterFetch.start(); 7[,f;zG } unB "dE // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), XX+rf siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 'Pn`V{a // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", W#/Ol59 nEndPos = " + nFileLength); +1A<kJ // fileSplitterFetch[nPos.length-1].start(); .h }D%Qa ZuON@ ( QpZhxp //等待子线程结束 0
N^V&k //int count = 0; D{}\7qe //是否结束while循环 eS+LFS7*k boolean breakWhile = false; =swcmab; Lf<9GYNy>` $t?e=#G while(!bStop) e1a %Rj~ { U%olH >1K write_nPos(); [C#pMLp,~ Utility.sleep(500); =1uI >[aN breakWhile = true; Np)!23 " {RO=4ba{J &}?e:PEy for(int i=0;i<nStartPos.length;i++) nhxl# { tt91)^GdYa if(!fileSplitterFetch.bDownOver) od|.E$B { vDL/PXNC breakWhile = false; r-uIFhV^ break; g==^ioS}* } ZaV@}=Rd8 } w|e i*L if(breakWhile) [!$>:_Vq/ break; c}cboe2 <;K/Yv'{r x F#)T* //count++; w, wt<@} //if(count>4) WNi<|A#T{ // siteStop(); #pK) } Sn,z$-;h; Rx<F^J NoIdO/vy" System.err.println("文件下载结束!"); M?`06jQD. } n40Z catch(Exception e){e.printStackTrace ();} Plv+ mb } w9BH>56/" 2y,wN"qH* ^6n]@4P //获得文件长度 4]R3*F public long getFileSize() glUP { .})8gL7V int nFileLength = -1; YWdvL3Bgk, try{ _X/`4 G URL url = new URL(siteInfoBean.getSSiteURL()); z@j&vW HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); }8e%s;C httpConnection.setRequestProperty("User-Agent","NetFox"); lX7^LB &3. 8i% :'=C/AL int responseCode=httpConnection.getResponseCode(); i=UJ*c if(responseCode>=400) )}v2Z3: { + u+fEg/A processErrorCode(responseCode); x(~l[hT return -2; //-2 represent access is error G[ea@u$? } /cn_|DwN5 k[m-"I%ZFX |@F<ajlV String sHeader; Y_B(R j.*}W4`Q_ G_@H:4$3 for(int i=1;;i++) 04TV./uA { 9|,AhyhO //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (@9-"W //Utility.log(in.readLine()); `x3c},'@k sHeader=httpConnection.getHeaderFieldKey(i); &~EOM if(sHeader!=null) :Vc9||k { aDESO5 if(sHeader.equals("Content-Length")) O!jCQ{ T { :n4x}% nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); @nK08Kj- break; xOH@V4z: } jLg4_N1SD } G.8ZISN/ else W:G*t4i break; R<U<Y'Y } -q27N^A0 } Ym6[~=~EK catch(IOException e){e.printStackTrace ();} |BR&p)7) catch(Exception e){e.printStackTrace ();} xe'*%3-v) M'sJ5;^5 u/:@+rTV_ Utility.log(nFileLength); #<:khs6 ;pJ7k23( (J;<&v}Gad return nFileLength; :1Ay_b_J } 4T"P#)z *(J<~:V? ;S/fe(C
//保存下载信息(文件指针位置) .W\Fa2}%av private void write_nPos() W=drp>Uj { {fWZ n try{ ,h"M{W$ output = new DataOutputStream(new FileOutputStream(tmpFile)); Q6E80> output.writeInt(nStartPos.length); 4U3T..wA for(int i=0;i<nStartPos.length;i++) d?JVB { 1x]G/I* // output.writeLong(nPos); /}wGmX! -! output.writeLong(fileSplitterFetch.nStartPos); ygHNAQG~ output.writeLong(fileSplitterFetch.nEndPos); &f$jpIyVX } !#QD;,SE+ output.close(); :Fh*4
&Z } LF8B5<[O catch(IOException e){e.printStackTrace ();} H)Yv_gT catch(Exception e){e.printStackTrace ();} AyWCb
} 2B|3`trY4x #*fB~Os: iPao54Z //读取保存的下载信息(文件指针位置) YB[P`Muj private void read_nPos() LS;kq', { Xv9CD try{ };|'8'5 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); *ZHk^d: int nCount = input.readInt(); V'8
(}(s/ nStartPos = new long[nCount]; 7ORwDR,`5 nEndPos = new long[nCount]; <5
okwcJ^ for(int i=0;i<nStartPos.length;i++) O1QHG'00 { YS9| J=!~ nStartPos = input.readLong(); D .E>Y nEndPos = input.readLong(); {"s8X(#_sC } 1cPi>?R: input.close(); Z|u_DaSrr| } w] VvH"?
catch(IOException e){e.printStackTrace ();} OF)X(bi4j catch(Exception e){e.printStackTrace ();} fYpy5vc-dm } q^gd1K<N nG2RBeJV *%8dW private void processErrorCode(int nErrorCode) FBe1f1
sm { y<Z8+/f`f System.err.println("Error Code : " + nErrorCode); 6d,"GT } f?)qZPM
H&I0\upd /IgTmXxxj //停止文件下载 ~&g:7f|X public void siteStop() D+RG,8Ht { W /IyF){ bStop = true; e_Y>[/Om for(int i=0;i<nStartPos.length;i++) Gz`Zp "i%0 fileSplitterFetch.splitterStop(); c#_%|gg $OmtN" p[cC%3 } fZgZ } Te;`-EL //负责部分文件的抓取 p!=/a)4X **FileSplitterFetch.java 5ES$qYN */ /#blXI package NetFox; p<
XjiRq OA[w|Tt .iw+# import java.io.*; :[Fwc import java.net.*; )V3G~p=0 kIQMIL0+ T2k5\r8 public class FileSplitterFetch extends Thread { }ZV$_ 4!D!.t~r a&j
H9 String sURL; //File URL g8^ $, long nStartPos; //File Snippet Start Position qz?9:"~$C long nEndPos; //File Snippet End Position { 2-w<t int nThreadID; //Thread's ID $H?v boolean bDownOver = false; //Downing is over TJ#<wIiX boolean bStop = false; //Stop identical e<q;` H FileAccessI fileAccessI = null; //File Access interface %ePInpb F&Q:1`y R6!t2gdKe@ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException &}6=V+J; { ;vuok]@ this.sURL = sURL; I6\l6 o this.nStartPos = nStart; [(]uin+9Q this.nEndPos = nEnd; 2: fSn&*/> nThreadID = id; (T,ST3{*k fileAccessI = new FileAccessI(sName,nStartPos);//定位 znD0&CS9q } lBl`R|Gt .7{,u1N' IpHGit28 public void run() (tys7og$' { _K'YaZTa;~ while(nStartPos < nEndPos && !bStop) ,9=5.+AJ { [i\K#O +f 2wikk]Z K-sJnQ23' try{ g\d|/HVK URL url = new URL(sURL); ge*f<#|0U- HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection ();
u`7\o~$ httpConnection.setRequestProperty("User-Agent","NetFox"); TtlZum\ String sProperty = "bytes="+nStartPos+"-"; 7h0LR7 httpConnection.setRequestProperty("RANGE",sProperty); [8![UcMq Utility.log(sProperty); p%8y!^g / F9BbG{ *IfLoKS' InputStream input = httpConnection.getInputStream(); ] vQn*T"^ //logResponseHead(httpConnection); kk&
([xqU ("ql//SL SK#;/fav6 byte[] b = new byte[1024]; *$Bx#0J8 int nRead; R FWJ ZN" while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) #Mrof9 { L`3x0u2 nStartPos += fileAccessI.write(b,0,nRead); b@"#A8M //if(nThreadID == 1) Nn>Oq+: // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ??)IPRv?yF } \\xoOA. k,OP*M V& _ Utility.log("Thread " + nThreadID + " is over!"); &i$p5 bDownOver = true; LS
<\%A} //nPos = fileAccessI.write (b,0,nRead); s
+"?j } OjFB_
N catch(Exception e){e.printStackTrace ();} ch!/k } "`s{fy~mV } e+Vn@-L; s$s~p
+U ,'Zs")Ydp //打印回应的头信息 V\vt!wBcB public void logResponseHead(HttpURLConnection con) <>%2HRn<u { M*<Ee]u for(int i=1;;i++) AhWc JD] { 2Jm#3zFYz3 String header=con.getHeaderFieldKey(i); E.45s? r if(header!=null) `r+zNJ@q //responseHeaders.put(header,httpConnection.getHeaderField(header)); ~nDbWv" Utility.log(header+" : "+con.getHeaderField(header)); k>SPtiAs else !59u z4 break; =~yRgGwJ } ?$J#jhR? } QbrR=[8b [3o^06V8j #%5[8~& public void splitterStop() 0w<vc}{t { ;auT!a~a# bStop = true; fAYp\k } crTRfqF Nz1u:D] wNMf-~ } Qa>t$`o` 21_sg f? &!N9.e:-] /* %0&59q]LM **FileAccess.java J;wDvt]]1 *//文件访问(定位,写) M-7^\wXTA package NetFox; !-B$WAV import java.io.*; B:oE&Ahh{ `8M{13fv x`n7D public class FileAccessI implements Serializable{ = Zi'L48 1#}}: //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 &65I
6 RandomAccessFile oSavedFile; e>J.r("f long nPos; @KJ~M3d0l E/OfkL*\ eU(cn8/} public FileAccessI() throws IOException zpgRK4p,I" { xaI)d/ this("",0); .:r
l<. } [$]qJ~kz @}\wec_ iewwL7 public FileAccessI(String sName,long nPos) throws IOException $/J4?Wik { ;x,yGb` oSavedFile = new RandomAccessFile(sName,"rw"); ,)?!p_*@: this.nPos = nPos; 4m1@lnjp oSavedFile.seek(nPos); N.'-9hv } Ky[s&>02 (! a;}V<7 03Uj0.Z|7 public synchronized int write(byte[] b,int nStart,int nLen) 4p<c|(f# { )kIZmQ|f1 int n = -1; E\1e8Wyh try{ 1 EL#T& oSavedFile.write(b,nStart,nLen); 4LXC;gZ n = nLen; #n_t5 O[ } yByxy-~ catch(IOException e) Mh"iyDGA { <H,E1kGw9 e.printStackTrace (); bUU\bc } br;~}GR_h .C|dGE?, __%){j6 return n; 3;?DKRIcX } I+eKuWB pN=>q<]L <IBWA0A=8a } ROi_k4Fj 4OOI$J$Jh ech1{v\B| /* U{52bH< **SiteInfoBean.java AB+HyZ*// */ *E|#g package NetFox; zX8'OoEH*9 `D $ "K1u Y>2oU`ly, public class SiteInfoBean { QCJf h^v+d*R
N E3V_qT8 private String sSiteURL; //Site's URL 'i:S=E
F private String sFilePath; //Saved File's Path Esdv+f}4; private String sFileName; //Saved File's Name BD2Gv)?g private int nSplitter; //Count of Splited Downloading File )0o|u > T_ j0*A$ >@tJ7mM public SiteInfoBean() ~Dbu;cqR@ {//nSplitter的缺省值为5 RPw1i* //default value of nSplitter is 5 Lvb'qZ6n this("","","",5); RveEA/&& } AzMX~cd .A F94OlE/ +WE<S)z< public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 6m0-he~ { 9Xe|*bT sSiteURL= sURL; af_bG; sFilePath = sPath; QfV:&b` sFileName = sName; %Vb~}sT: this.nSplitter = nSpiltter; E?h'OR@_ L xzw2~(lo 0zpA<"S } b"(bT6XO! .Fx-$Yqy >P}6/L public String getSSiteURL() GLA4O) { ~p { fl? return sSiteURL; Mk/ZEy q^ } U]Fnf?( Va$JfWef s+9b. public void setSSiteURL(String value) 0Wb3M"#9< { YK V"bI
sSiteURL = value; (m() r0:@ } 2Uy}#n|)r u vyvy F\ %PB p public String getSFilePath() u>.>hQ { ~>uu1[/ return sFilePath; i9^m;Y)^I } a/Cc.s 7
V=%&+ Y'?{yx{ public void setSFilePath(String value) K7},X01^ { ub-vtRpm sFilePath = value; *#Iqz9X.Y3 } ug?#Oa :?$<: uDMyO<\ public String getSFileName() SJO^.[ { 2 W Wr./q return sFileName; )QB9zl: } oF.H?lG7` t+aE*Q Fv3:J~Yf public void setSFileName(String value) L{u1_ { $+n5l@W sFileName = value; !}J19]\ } R 5Cy% 8 O.5ML{ `cqZ;(^ public int getNSplitter() J1d|L|M { &Ui&2EW return nSplitter; e
ls&_BPE } yHxi^D] @l?2", g?9%_&/})A public void setNSplitter(int nCount) JT*Pm"} { ~!ICBF~j nSplitter = nCount; CW@G(R } &\Yd)#B/ } 8Og)(BC 7WN$ rl5/ vW03nt86 /* .KxE>lJbqM **Utility.java sX#7;,Ft7 */ % ^&D, package NetFox; N4wMAT:h &$. x1$% Ffr6P
}I public class Utility { n$jf($* V2*m/JyeB &;@U54,wV public Utility() ~f[91m!+ { 5h>t4 [~ l(?Yx EhHW` } } bEu+bZ kA(q-Re$B* //线程睡眠 AK5$>Pkvk public static void sleep(int nSecond) mNAp FwZ { >Av%[G5=h# try{ g#<M/qn Thread.sleep(nSecond); dWhF[q" } Ujss?::`G catch(Exception e) ;AE%f.Y { fa;GM7<e) e.printStackTrace (); <>K@#|%Y& } ^<nN~@j } !d=Q@oy5 qYR+qSAJP //日志 gb@ |\n public static void log(String sMsg) b}jLI_R{ { U-GV^j System.err.println(sMsg); oxL4* bqZ } e3 {L%rQE _Rnq5y Abf=b<bu public static void log(int sMsg) a3oSSkT { m&Lc." System.err.println(sMsg); kn|z } rFR2c?j8 } d
3}'J od~`q4p1(- Ue0Q| h /* 7Om)uUjU4 **TestMethod.java P;!4 VK */ i*%2 e) package NetFox; }V
%b \^%5! Y/w) VV public class TestMethod { 9 ulr6 fO{E65uA B^G{k3]t public TestMethod() @X6|[r&Z { ///xx/weblogic60b2_win.exe >SZ9,K4Gs try{ ^,KN@ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); S+C^7# lT //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); to*<W,I SiteFileFetch fileFetch = new SiteFileFetch(bean); U[8Cg fileFetch.start(); ()+;KF8 } 5-pz/%, catch(Exception e){e.printStackTrace ();} a4M`Bk;mb R!.HS0i. c~UYs\ } _;+N=/l0 U-EX)S^T[{ 0\y@etb:mf public static void main(String[] args) c{t[iXDG { ,/g\;#:{@] new TestMethod(); N:@C%
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