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/* NV7k@7_{B **SiteFileFetch.java K+pVRDRcs */ AdVc1v&> package NetFox; 6<2H 7' import java.io.*; R&9FdM3K`: import java.net.*; Z:dp/M} P #O2MiG S=(<m%f public class SiteFileFetch extends Thread { Y=p!xr> h);^4cU DmpT<SI+! SiteInfoBean siteInfoBean = null; //文件信息Bean H1I^Vij long[] nStartPos; //开始位置 y~fKLIoz" long[] nEndPos; //结束位置 y(o)}m*0 FileSplitterFetch[] fileSplitterFetch; //子线程对象 GlnO8cAB long nFileLength; //文件长度 yVII<ImqIH boolean bFirst = true; //是否第一次取文件 H T|DT boolean bStop = false; //停止标志 Keozn*fzI File tmpFile; //文件下载的临时信息 'C/yQvJ
DataOutputStream output; //输出到文件的输出流 <XIIT-b[ qT48Y //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) oQ 2$z8 public SiteFileFetch(SiteInfoBean bean) throws IOException #0>xa]S { MC* Hl`C siteInfoBean = bean; ^cm]
[9 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); g:>'+(H ; tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); T9C_=0(hn if(tmpFile.exists ()) 0^lWy+ { CmZayV bFirst = false; v8)"skVnFG read_nPos(); CuWJai:nQ; } fC[za,PXaE else EHk\Q\ { Gq^vto nStartPos = new long[bean.getNSplitter()]; N ~{N Nf Y nEndPos = new long[bean.getNSplitter()]; H_X^)\oJ } B1V{3 ovdJ[bO hbJ>GSoZ, Y3Fj3NwS } }5-w,m{8/ 1@DC#2hPr >#w;67he2 public void run() ZEAUoC1E1 { SVZocTt //获得文件长度 v1TFzcHl< //分割文件 #;$]M4 //实例FileSplitterFetch xWxc1tT` //启动FileSplitterFetch线程 X H-_tvB //等待子线程返回 HeOdCr-PN try{ ){*+s RBW if(bFirst) c2y,zq|H { 5&ku]l+ nFileLength = getFileSize(); K]hp-QK< if(nFileLength == -1) bC/":+s& p { )th[fUC( System.err.println("File Length is not known!"); Q?#I{l)V( } J;C:nE|V
else if(nFileLength == -2) ]mTBD<3\ { >2'"}np* System.err.println("File is not access!"); w G %W{T$ } c+ oi8G else <s9?9^!!V^ { cJ;Nh>ey for(int i=0;i<nStartPos.length;i++) k, HC"?K { j*jUcD* nStartPos = (long)(i*(nFileLength/nStartPos.length)); Z!)~?<gcq: } ilA45@ for(int i=0;i<nEndPos.length-1;i++) 0NXH449I= { 5% 2A[B nEndPos = nStartPos[i+1]; l4OrlS/ 5 } yD7BZI
xW nEndPos[nEndPos.length-1] = nFileLength; ;-+q*@sa] } or/gx 3 } 1~5DIU^ qN $t_ A&Y5z[p //启动子线程 ;mkkaW,D* fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; x HRSzYn$ for(int i=0;i<nStartPos.length;i++) ,`@pi@<"# { 7?$?Yu fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), R4m{D siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5*AXL.2ih nStartPos,nEndPos,i); nHseA Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); i[v4[C=WB! fileSplitterFetch.start(); hF%M!otcJ- } rtV`Q[E // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), KK){/I=z siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Fx9-A8oIR // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", E/P~HE{ nEndPos = " + nFileLength); O>~,RI! // fileSplitterFetch[nPos.length-1].start(); <+`%=r)4 WsI`!ez;D !@xO]Jwv //等待子线程结束 g!'R}y //int count = 0; > |$]=e,Z //是否结束while循环 $[ {5+ * boolean breakWhile = false; g7 \= &Y{^yb }LzBo\ while(!bStop) M/zO|-j& { ,_2-Op write_nPos(); Xz$4cI#n: Utility.sleep(500); {>]\< breakWhile = true; :xd;=;q5 *g/klK i0vm00oT for(int i=0;i<nStartPos.length;i++) L, JQ\!c { G]^[i6PQs if(!fileSplitterFetch.bDownOver) T(b9b,ov) { @60D@Y breakWhile = false; C]`uC^6g break; *l2`- gbE } c8l>OS5i3_ } j4.wd
RK if(breakWhile) "6B7EH break; fz&B$1;8 -@orIwA& %TB(E<p` //count++; I6>J.6luF9 //if(count>4) .iXN~*+g // siteStop(); R><g\{G] } }A#IBqf5 g@.$P>Bh 0> f!S` * System.err.println("文件下载结束!"); h9vcN#22D } K7
e~%mY catch(Exception e){e.printStackTrace ();} [a=exK } |Splbsk %opBJ rQ;w{8J\t //获得文件长度
5)[~
T2j! public long getFileSize() HA6tGZP*L { i"8mrWb int nFileLength = -1; L P<A q try{ _plK(g-1J% URL url = new URL(siteInfoBean.getSSiteURL()); zLI0RI.Pe HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); }z3j7I httpConnection.setRequestProperty("User-Agent","NetFox"); g'0CYY +#O+%! >Vuvbo int responseCode=httpConnection.getResponseCode(); VYvfx if(responseCode>=400) K_7pr~D]@r { %y1!'R:ZW processErrorCode(responseCode); jc^QWK*q return -2; //-2 represent access is error t@q'm.:uw< } +H)'(< Q8p6n 7_0p& 3
String sHeader; |)-kUu vOQ%f?%G\ @Nu2
:~JO for(int i=1;;i++) Z;BS@e { |P|B"I<? //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ;b~ S/ //Utility.log(in.readLine()); PwY/VGT sHeader=httpConnection.getHeaderFieldKey(i); tFN >]`Z if(sHeader!=null) dzVi ~wt_& { @MW@mP)# if(sHeader.equals("Content-Length")) +-9vrEB { Q&9yrx. nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); P 7x;G5'. break; S-Uod y } @"@a70WHk } .~z'm$s1o else 96=<phcwN[ break; gI+8J.AG= } TP }a9-9? } fi+}hGj(r catch(IOException e){e.printStackTrace ();} Nw;qJ58@ catch(Exception e){e.printStackTrace ();} 0|3I^b 8tY>%A~^z 7& M-^Ev Utility.log(nFileLength); SI (f&T( |,8z"g -<iP$,bq72 return nFileLength; @[GV0*yz$ } e#Tv5O +pofN-*% m]p{]6h //保存下载信息(文件指针位置) Q*ITs!~Z private void write_nPos() ;>6< u.N { wxN)dB try{ GES}o9?# output = new DataOutputStream(new FileOutputStream(tmpFile)); qJey&_ output.writeInt(nStartPos.length); Di9RRHn&q for(int i=0;i<nStartPos.length;i++) j=\h|^gA { WI8}_){ d // output.writeLong(nPos); N0`9/lr| output.writeLong(fileSplitterFetch.nStartPos); R@e'=z[%1 output.writeLong(fileSplitterFetch.nEndPos); l|5 h } m</m9h8 output.close(); e`*}?N4d } ]#/nn),Z catch(IOException e){e.printStackTrace ();} t,/ G catch(Exception e){e.printStackTrace ();} W4^L_p>Tm^ }
;vn0%g kY0HP a $|4@Zx4vf //读取保存的下载信息(文件指针位置) $vn6%M[ private void read_nPos() 3JazQU { 2e48L677- try{ d;i|s[6ds` DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); K<JzIuf& int nCount = input.readInt(); ts]e M1; nStartPos = new long[nCount]; s%[F,hQRk nEndPos = new long[nCount]; | /.J{=E0K for(int i=0;i<nStartPos.length;i++) ]a3$hAcj6" { AFLtgoXn: nStartPos = input.readLong(); q0sf\|'<} nEndPos = input.readLong(); dFg>uo } tV}!_ input.close(); JK,MK| } #w$Y1bjn catch(IOException e){e.printStackTrace ();} V&Y`?Edc catch(Exception e){e.printStackTrace ();} `Rq=:6U;3 } _nGx[1G( 5 qGk+4 yC R2bq hSlF private void processErrorCode(int nErrorCode) _&KqmQ8$7 { Im]@#X System.err.println("Error Code : " + nErrorCode); =H95?\}T[ } WtSs:D z]7 WC r>mBe;[TX //停止文件下载 b?wrOS public void siteStop() Mz+I
YP`L { ULx:2jz bStop = true; 1"
'3/MFQ8 for(int i=0;i<nStartPos.length;i++) Ple.fKu fileSplitterFetch.splitterStop(); n ]%2Kx B|`?hw@g+ 5epI'D } a@}.96lStD } 8$FH;= //负责部分文件的抓取 Iix,}kzss **FileSplitterFetch.java U~G7~L &m */ "8za'@D"f package NetFox; D%>Bj>xQD i4D(8; bpu`'Vx import java.io.*; q<RjAi import java.net.*; )\wkVAm PgtLyzc {X,%GI public class FileSplitterFetch extends Thread { sG g458 p.8 bX $<*) 5|6 String sURL; //File URL B4s$| i{D long nStartPos; //File Snippet Start Position n,T
&n long nEndPos; //File Snippet End Position !$)reaS int nThreadID; //Thread's ID HZrA}|:h boolean bDownOver = false; //Downing is over J+D|/^ boolean bStop = false; //Stop identical 7w
)?s@CD FileAccessI fileAccessI = null; //File Access interface d<c 29Y G?4@[m O]: 9va public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException tFU4%c7V { $v>q'8d this.sURL = sURL; A;cA|`b this.nStartPos = nStart; kD#T_d this.nEndPos = nEnd; VoCg,gow nThreadID = id; 'h$:~C fileAccessI = new FileAccessI(sName,nStartPos);//定位 &X4anH>O } b42%^E ;@+|]I
vNi;)"&* public void run() ^}
{r@F { lKbWQ> while(nStartPos < nEndPos && !bStop) fECV\Z { j26i+Z =7!s8D,[ rfV'EjiM} try{ (Jp~=6&lKf URL url = new URL(sURL); Y7GsL7I HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =DwLNyjU4 httpConnection.setRequestProperty("User-Agent","NetFox"); YNr5*P1 String sProperty = "bytes="+nStartPos+"-"; 082}=Tsx httpConnection.setRequestProperty("RANGE",sProperty); 2EgvS!" Utility.log(sProperty); `IN!#b+Eo ?K$&|w%{3 FNGa4 InputStream input = httpConnection.getInputStream(); WcmX"{ //logResponseHead(httpConnection); ^y,h0?Z9 aEf3hB* ~ fW= N byte[] b = new byte[1024]; dv+Gv7&2/ int nRead; x,nl PU while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) LhG\)>Y% { {S0-y nStartPos += fileAccessI.write(b,0,nRead); av'DyNW\ //if(nThreadID == 1) CU=sQfE // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); D5gj*/" } `%YMUBaI |s3;`Nxu7 m|NZ093d Utility.log("Thread " + nThreadID + " is over!"); u|KjoO
bDownOver = true; Na@bXcz) //nPos = fileAccessI.write (b,0,nRead); Z?P^Y%ls } jCY~Wc catch(Exception e){e.printStackTrace ();} +~n:*\ } 9]Jv
>_W* } e&sH<hWR <F^9ML+' \Zf=A[ //打印回应的头信息 ByqVNz0L public void logResponseHead(HttpURLConnection con) QC'Ru'8S { izSX for(int i=1;;i++) ~vTwuc\(H { eEXNEgbn String header=con.getHeaderFieldKey(i); cB&_':F if(header!=null) -9vNV:c //responseHeaders.put(header,httpConnection.getHeaderField(header)); B/X$ZQ0 Utility.log(header+" : "+con.getHeaderField(header)); Y"
=8wNbr else 97Dq; break; *VsGa<V } ,h=a+ja8 } ,^bgk
-x- :2lpl%/ <M9NyD` public void splitterStop() ?22U0UF { s AFn.W bStop = true; NL]_;\ h } K/9Jx(I,qL Cl'$*h ]QlW{J } *I :c@iCNJ 7V%P -sJ1q^;f@ /* OROvy **FileAccess.java $e1.y b% *//文件访问(定位,写) 9(t(sP_ package NetFox; ;6 @sC[ import java.io.*; ezw*Lo! LqYyIbsvf gaN/
kp public class FileAccessI implements Serializable{ uD/@d'd_4L z5gVP8*z5 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 UvGxA[~2+ RandomAccessFile oSavedFile; JDf>Qg{ long nPos; 7:B/?E 3;buC|ky _-BP?'lN public FileAccessI() throws IOException +a39 !j
1_ { 3IRur,|' this("",0); OxDqLX } Dtd~}-_Q 6):1U N!ihj:, public FileAccessI(String sName,long nPos) throws IOException LEM%B??&5z { a4UwhbH oSavedFile = new RandomAccessFile(sName,"rw"); Sm<*TH!\n_ this.nPos = nPos; ~AjPa}@ f oSavedFile.seek(nPos); ]AQ}_dRi= } fY^CIb$Y M(L6PyEa!Y #
bHkI~ public synchronized int write(byte[] b,int nStart,int nLen) QM8Ic,QFvo { R*vQvO%)h int n = -1; ,c"J[$i$ try{ Vw H|ed$ oSavedFile.write(b,nStart,nLen); d<d3j9u(# n = nLen; CNb(\] } @'>RGaPV catch(IOException e) 46]BRL2 G { YyYZD{^ e.printStackTrace (); ^"O>EY': } ^R:&c;&, 7tWC<# W8 Ssv return n; ^vMlRt; } M6&=- <y8oYe_! Tr_gc~ } $F^VtCx2& F%<*a,m6g !`%j#bv /* XA<h,ONE? **SiteInfoBean.java M?YNK] */ 5IUdA? package NetFox; "x R6~8 ]+Lr'HF Eu' ;f_s public class SiteInfoBean { ]7}!3 m ~-Kx^3(# 2b7-=/[6 private String sSiteURL; //Site's URL 9;Z{++z private String sFilePath; //Saved File's Path 1q(Qr
h private String sFileName; //Saved File's Name 3F]Dh^IR9 private int nSplitter; //Count of Splited Downloading File 8!|vp7/ )YgntI@ F oC
$X public SiteInfoBean() |;NfH|43; {//nSplitter的缺省值为5 *-PjcF}Y //default value of nSplitter is 5
e4N d this("","","",5); ^7\kvW } x?o#}:S g;=VuQuP| xI{fd1 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) R_B0CM<! { o)XrC sSiteURL= sURL; !.,J;Qt sFilePath = sPath; OW#0$%f sFileName = sName; 6&0@k^7~ this.nSplitter = nSpiltter; 5@+?{Cl 8<"g&+T d)1gpRp } W]/J]O6 ;*Vnwt A qdI%v#'M public String getSSiteURL() _!1LV[x!s { F}{%*EJ return sSiteURL; (
jU $ } ymxA<bICS8 U Buh'?j ]?+i6 [6U public void setSSiteURL(String value) eMnK@J { mP\V.^ sSiteURL = value; QNOdt 2NN } vY_[@y `2]0 X#R pk9Ics;y public String getSFilePath() 1v|-+p42 { VA[EY`8 return sFilePath; Hc'Pp{| X } @U8u6JNK' :.ZWYze h"+7cc@ public void setSFilePath(String value) *Z"`g
%,; { dscah0T sFilePath = value; H2BRId } -y|J_;EG )XN%pn d~qQ_2M[G public String getSFileName() 9no<;1+j, { WF`%7A39Af return sFileName; E>s+"y } zQulPU Zpg;hj5_ enJ;#aA public void setSFileName(String value) Qwpni^D8j { pi"M*$ sFileName = value; AMjr[!44 @ } :W, S ={;pg( 't`h?VvL public int getNSplitter() y/\b0& { ~g/"p`2-N return nSplitter; A9b(P[!]T: } <b
H*f w w{aGH/LN 3h:~NL public void setNSplitter(int nCount) jzV"( p! { 73rme, nSplitter = nCount; r{v3XD/ } lo>9 \ Po } \85%d0@3 neM.M)0 nDdY~f.B /* ~'lT8 n_ **Utility.java IOZw[9](+ */ Ztmh z_u7 package NetFox; =!q]0# F2}Fuupb. ybiTWM public class Utility { 7JBs7LG aC[G_ACwc t$n Jmfzm public Utility() k)-+ZmMOh { 0RA#Y(IR ISC>]` `[5xncZ- } {.$7g8]I tV(iC~/ //线程睡眠 -:%QoRCy public static void sleep(int nSecond) ((A@VcX { 0a89<yX try{ "O>~osj Thread.sleep(nSecond); g)czJ=T2 } "b`#RohCi catch(Exception e) dh`s^D6Q> { [T_[QU:A e.printStackTrace (); e#Ao]gc } jdG2u
p } HSNj ;SU<T^a //日志 ^ slIR!L public static void log(String sMsg) LSc^3=X { 8_!qoW@B System.err.println(sMsg); Y^Buz<OiG } ?I^$35 h@R n)D HjA~3l7 public static void log(int sMsg) E~}H,*) { M,JwoKyg System.err.println(sMsg); }PK4
KRn } P1[.[q/-e } DGGySO6=$e 5go)D+6s zgjgEhnvU /* s U`#hL6; **TestMethod.java .5;
JnJI */ 8J'5%$3u package NetFox; =? !FO'zt" (E0WZ$f} )q_,V" public class TestMethod { $V3If L?nhm=D MXaik+2 public TestMethod() t#P7'9Se8 { ///xx/weblogic60b2_win.exe |.Vgk8oTl try{ v];YC6shx SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 8i]
S[$Fc //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); (Z>?\iNJ SiteFileFetch fileFetch = new SiteFileFetch(bean); mh"PA p fileFetch.start(); LAc60^t1 } u_WUJ_ catch(Exception e){e.printStackTrace ();} zqj|$YNC Fxa{
9'99 ,|RKM } i}8OaX3x (.N n|lY<i E'{:HX public static void main(String[] args) @lDnD%vZ` { n>u_>2Ikkj new TestMethod(); t+A*Ws*o } ^ulgZ2BQ| } /95z1e 点击下载更多相关资料
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