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/* BqJ|l7+ **SiteFileFetch.java Gt{%O>P8t */ {_tq6ja-< package NetFox; 0J?443AY import java.io.*; @V>]95RX import java.net.*; |./:A5_h PM!JjMeQh U
_pPI$ = public class SiteFileFetch extends Thread { OfrzmL<K P7>\j*U91{ Tf=1p1!3 SiteInfoBean siteInfoBean = null; //文件信息Bean ku/vV+&O long[] nStartPos; //开始位置 mm_)=Ipj> long[] nEndPos; //结束位置 0v EQgx> FileSplitterFetch[] fileSplitterFetch; //子线程对象 qbQdxKk long nFileLength; //文件长度 PP!/WX boolean bFirst = true; //是否第一次取文件 tJ\v>s-f boolean bStop = false; //停止标志 DN%JT[7 File tmpFile; //文件下载的临时信息 6 _V1s1F DataOutputStream output; //输出到文件的输出流 'hu'}F{ dB~A4pZa //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) {|$kI`h,3- public SiteFileFetch(SiteInfoBean bean) throws IOException cRs\()W { $$Tf1hIg siteInfoBean = bean; fP
3eR>e //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ]Ky`AG`2~ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); N MkOx$ if(tmpFile.exists ()) TP| ogF? { }@.@k6`n bFirst = false; (mbm',%- ( read_nPos(); Dy5&-yk } jHob{3 else Mi
NEf { `_.:O,^n^ nStartPos = new long[bean.getNSplitter()]; y%9Hu nEndPos = new long[bean.getNSplitter()]; [c;0eFSi2 } 63'%+ cjtcEW > {d9z9O ]2ab~
gr } ;TC]<N.YJT [ Y{ SnX)&>B public void run() P_H2[d&/>D { ltrti.& //获得文件长度 w_"-rGV //分割文件 uzb|yV'B //实例FileSplitterFetch Ve9)?=! //启动FileSplitterFetch线程 %<8?$-[ //等待子线程返回 mYfHBW: try{ +BM[@?"hrh if(bFirst) b7+(g[O { Y_C6*T% nFileLength = getFileSize(); ^N^s|c' if(nFileLength == -1) )l(DtU!E { -|u
yJh System.err.println("File Length is not known!"); nm_taER } 89KFZ[.}] else if(nFileLength == -2) DD { H>D? System.err.println("File is not access!"); 7k%!D"6_R } ;FuST else W@zxGH$z> { 2^=.f?_YR for(int i=0;i<nStartPos.length;i++) Ll%}nti { U)iBeYW: nStartPos = (long)(i*(nFileLength/nStartPos.length)); .i )n1 } sEKF for(int i=0;i<nEndPos.length-1;i++) :_F 8O { t@ri`?0w nEndPos = nStartPos[i+1]; XR<g~&h } ,dosF Q nEndPos[nEndPos.length-1] = nFileLength; xY.?OHgG/ } * >:< } J0f!+]~G3 =eS?`| 0dsL%G~/N //启动子线程 xFIzq fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; s`G}MU for(int i=0;i<nStartPos.length;i++) lSoAw-@At8 { hW~UJ/$ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <eS+3, siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), OXl0R{4 nStartPos,nEndPos,i); MOytxl:R Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^R
:zma fileSplitterFetch.start(); oO7)7$|1 } ang~_Ec. // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), NYKYj`K siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;gAL_/_ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", B7Zi|-F nEndPos = " + nFileLength); BW3Q03SW6 // fileSplitterFetch[nPos.length-1].start(); b&Laxki 2dB]Lw@s K:VZ#U(_ //等待子线程结束 h3GUFiZ. //int count = 0; zmu+un"\j //是否结束while循环 u|\?6fz boolean breakWhile = false; Nw"?~"bo ;;C2t&( uvR l`"Y while(!bStop)
x|c_( { Hj `\Fm*A write_nPos(); cdGBo4 Utility.sleep(500);
V_e breakWhile = true; N9*QQ0 I\M
}Dxpp ]Nssn\X7 for(int i=0;i<nStartPos.length;i++) TI2K_' { 2qV oe}F if(!fileSplitterFetch.bDownOver) 0DnOO0Nc { j0Cj&x%qF} breakWhile = false; zN)) .a break; oxUBlye } py%~Qz% } 'R-g:X\{ if(breakWhile) f`}/^*D break; amX1idHo^ 1D!MXYgm1b WjSu4 //count++; @)!N{x? //if(count>4) l&kZ6lZ // siteStop(); &v;o }Q}E{ } W1LR ,:$ 5G`fVsb R>5Xv%R System.err.println("文件下载结束!"); sX}#L } ([^f1;ncm catch(Exception e){e.printStackTrace ();} [}l 90 lP } FJKlqM5] <R~;|&o,$ #W.vX=/* //获得文件长度 paMK]- public long getFileSize() Bva2f:)K| { sO(4F8cpU int nFileLength = -1; VfDa>zV3 try{ nz#eJ URL url = new URL(siteInfoBean.getSSiteURL()); [~G1Rz\h HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); vl+bc[ i~ httpConnection.setRequestProperty("User-Agent","NetFox"); L(k`1E =:6B`,~C u]`0QxvZ int responseCode=httpConnection.getResponseCode(); yh|+Usa if(responseCode>=400) 9:=:P> { je 3Qq1 processErrorCode(responseCode); tJ8:S@E3, return -2; //-2 represent access is error .wlKl[lE2 } 8A::q ; >#gDk K K:Z(jF!j String sHeader; =FiO{Aw`N ^j10
f$B >pJ#b= for(int i=1;;i++) ;kR=vv { 3J/l>1[ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); )iK:BL*Nw //Utility.log(in.readLine()); s5Wb iOF sHeader=httpConnection.getHeaderFieldKey(i); zKaj<Og if(sHeader!=null) bC) <K/Q9 { N>Uxq&)! if(sHeader.equals("Content-Length")) |;d#k+/; { 4gVIuF*pS nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 4vvQ7e7 break; iE_[]Vgc } ma<uXq } 6R$Yh0% else c6h+8QS break; ;+#Nb/M } ]$sb<o
.a } rKT.~ZP\ catch(IOException e){e.printStackTrace ();} ">20`Mj8 catch(Exception e){e.printStackTrace ();} _% \% 6-g>(g A;&YPHB Utility.log(nFileLength); /EegP@[ _Y}cK|3 )~ &gBX return nFileLength; ?2\oi*$ } Qgv g*KX D/;[x{;E YTTij|( //保存下载信息(文件指针位置) G-R83Orl private void write_nPos() bu $u@:q 6 { <r>Sj/w<D try{ WiQVZ{ output = new DataOutputStream(new FileOutputStream(tmpFile)); \i}-Y[Dg output.writeInt(nStartPos.length); Aho*E9VW for(int i=0;i<nStartPos.length;i++) \DBEs02 { L<B)BEE. // output.writeLong(nPos); ^Pu:&:ki output.writeLong(fileSplitterFetch.nStartPos); $d4&H/u^ output.writeLong(fileSplitterFetch.nEndPos); ,`k6@4 } /(u? k%Q output.close(); =K|#5p` } ]l +<- catch(IOException e){e.printStackTrace ();} n\<7`, catch(Exception e){e.printStackTrace ();} @$;8k } } =VT\$
5A ;_|4c7 6U$e;cr6 //读取保存的下载信息(文件指针位置) \Y8 sIs private void read_nPos() 7sWe32 { |-S+ x]9 try{ "O|.e`C%^ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); | WTWj int nCount = input.readInt(); :=5X)10 nStartPos = new long[nCount]; _'X nEndPos = new long[nCount]; !y>up+cRjl for(int i=0;i<nStartPos.length;i++) 4i}nk
T { q4G$I?4 nStartPos = input.readLong(); X Z3fWcw[ nEndPos = input.readLong(); W,H=K##6< } 'Nuy/\[{\ input.close(); P{:Z xli0 } 2mMi=pv9 catch(IOException e){e.printStackTrace ();} ,=c(P9}^ catch(Exception e){e.printStackTrace ();} 1CSGG'J]E } ]\oT({$6B 1;i|GXY:h G-K{ private void processErrorCode(int nErrorCode) ^;9l3P{ { ur=:Ha System.err.println("Error Code : " + nErrorCode); mW+5I-~ } XzqB=iX YktZXc?iI< UIg?3J}R //停止文件下载 KsK]y,^Z public void siteStop() bmi",UZ:F { yHlQKI bStop = true; 11Qi
_T\ for(int i=0;i<nStartPos.length;i++) pzUr9 fileSplitterFetch.splitterStop(); ~ qaT
jSP *tk=D sRW .O(9\3q\ } >j$aY } i_*. //负责部分文件的抓取 RP[`\ **FileSplitterFetch.java 9^`cVjD5 */ &,:!gYN package NetFox; *//z$la 2Oyw#1tdn ["Tro;K# import java.io.*; #CAZ}];Qx import java.net.*; _*8 6 }u$c*} dTu*%S1Z public class FileSplitterFetch extends Thread { JKO*bbj n9k Nh/i'q/ String sURL; //File URL OI78wG long nStartPos; //File Snippet Start Position j!oX\Y-: & long nEndPos; //File Snippet End Position /FpPf[ int nThreadID; //Thread's ID m\/) m]wR boolean bDownOver = false; //Downing is over ZWzr8oY) boolean bStop = false; //Stop identical yV(9@lj3; FileAccessI fileAccessI = null; //File Access interface -"a(<JC^NI +ZiYl[_|
"^ BA5 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException m_Z(osoE#W { h&v].l this.sURL = sURL; XeY[;}9 this.nStartPos = nStart; {D|ST2:E this.nEndPos = nEnd; ;lrO?sm nThreadID = id; CR2.kuM0~ fileAccessI = new FileAccessI(sName,nStartPos);//定位 G %\/[
B } H\ E%.QIx ?"<m {,yQI *zDDi(@vtK public void run() M5d EZ { -MsL>F.] while(nStartPos < nEndPos && !bStop) Qt_KUtD { ad47 42 Tz.okCo]z qwnVtD try{ J kAd3ls URL url = new URL(sURL); 9^N(s7s HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); c=bK_Z_ httpConnection.setRequestProperty("User-Agent","NetFox"); Hg8
4\fA String sProperty = "bytes="+nStartPos+"-"; <RbfW'<G httpConnection.setRequestProperty("RANGE",sProperty); V?)V2>] Utility.log(sProperty); w9RBT(u C?]eFKS." MZcvr 9y InputStream input = httpConnection.getInputStream(); _s5FYb# //logResponseHead(httpConnection); D)l\zs%ie vlZmmQeJm #Dz"g_d byte[] b = new byte[1024]; p1i}fGS int nRead; Vkd_&z7 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) KLVYWZib { x%goyXK nStartPos += fileAccessI.write(b,0,nRead); k $8Zg*) //if(nThreadID == 1) NG:4Q.G1g // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :sLg$OF } (JnEso-V +j+
v(- K3h7gY| . Utility.log("Thread " + nThreadID + " is over!"); _/cX!/" bDownOver = true; QlR~rFs9t //nPos = fileAccessI.write (b,0,nRead); j%Z5[{!/,X } C2=PGq catch(Exception e){e.printStackTrace ();} iQG]v[$ } matm>3n } 4x4[ O{7#Xj
:_ 3vAP&i'I //打印回应的头信息 <gH-`3J6 public void logResponseHead(HttpURLConnection con) 0pW;H|h { ]GCw3r(! for(int i=1;;i++) 1|ddG010 { ot!m=s String header=con.getHeaderFieldKey(i); &(Hw:W9 if(header!=null) G?\eO&QG{" //responseHeaders.put(header,httpConnection.getHeaderField(header)); Ex*{iJ;\ Utility.log(header+" : "+con.getHeaderField(header)); {}iS5[H] else u8|CeA break; I?%q`GyP5 } Qy4Pw\ } !v9`oL26 '/9MN;_ wxj}k7_(`A public void splitterStop() QfPw50N; { g+QIhur bStop = true; `_ M+=*} } 4oryTckS Iw(
wT_ Knb(MI6 } 1{d;Ngx (f_J @n T<Qa`|5> /* B~qo^ppVU **FileAccess.java c'Ibgfx%m *//文件访问(定位,写) oAB:H\ package NetFox; `nEqw/I import java.io.*; f O+lD ?Ov~\[) F n6Uf>5 public class FileAccessI implements Serializable{ <
]+Mdy wmXI8'~F& //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节
z-g6d ( RandomAccessFile oSavedFile; ;1nXJ{jKw long nPos; Y9vi&G?Jl gae=+@z 5T( cy public FileAccessI() throws IOException 7,Z<PE { ZHeq)5C ;f this("",0); 6|3 X*Orn } NRT]dYf"z Xppb|$qp4H nec}grA public FileAccessI(String sName,long nPos) throws IOException QOrMz`OA { 3b_/QT5! oSavedFile = new RandomAccessFile(sName,"rw"); 0CXXCa7! this.nPos = nPos; `r3 klL,W' oSavedFile.seek(nPos); bXXX-Xc } gYk5}E- ;YMg4Cs R ;A8y public synchronized int write(byte[] b,int nStart,int nLen) ?P>4H0@I+ { u#^l9/tl int n = -1; iPWr- try{ w{*V8S3h9 oSavedFile.write(b,nStart,nLen); @o'L! 5Y n = nLen; 9h)8Mq+M } :~srl)|) catch(IOException e) 3ZyvX]@_ { g`C8ouy e.printStackTrace (); W_ Hoa*~ } ~@X3qja
jJt4{c 5M5vxJ)Lh return n; wxPl[)E } " Qyi/r41 *f>\X[wN Jq? zr]"A } ,2 W=/,5A <]|HGc .q4$)8[Pg /* 9Hb|$/FD **SiteInfoBean.java afD {w*[8 */ ?K2}<H- package NetFox; cTRtMk%^ QUvSeNSp E.ji;5 public class SiteInfoBean { &N6[*7 /]-yZ0hX0O :Mh\;e private String sSiteURL; //Site's URL /cUu]#h private String sFilePath; //Saved File's Path +_bxza(ma{ private String sFileName; //Saved File's Name
iD])E/ private int nSplitter; //Count of Splited Downloading File z#P`m,~t0 `{
HWk^ k\j_hu public SiteInfoBean() "%a<+D {//nSplitter的缺省值为5 W+U0Y,N6 //default value of nSplitter is 5 }gt)cOaY this("","","",5); g"m9[R=]6 } &HAu;u@ d8+@K&z| ^ACrWk~UY public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) J-uQF| { |s(Ih_Zn sSiteURL= sURL; l`A&LQ[ sFilePath = sPath; t?PqfVSq sFileName = sName; ScD
E)r this.nSplitter = nSpiltter; =>evkaj mXS]SE XK@&$~iA3 } YX)Rs
Vf r@vt.t0# XOI"BLd public String getSSiteURL() )rAJ>; { '@M"#`#0 return sSiteURL; <-n^h~,4 } fc<y(uX
EStui>ho (y&sUc9 public void setSSiteURL(String value) d6JW" { i4h`jFS sSiteURL = value; |mRlP5 } ePJ_O~c "M /Cl|z
JR15y3F public String getSFilePath() kN{$-v=K { lz<'
L.
. return sFilePath;
k0ai#3iJ } G}+@C] eiyr^Sch. 8Yf*vp>T/x public void setSFilePath(String value) >1Hv c7DP { W}3%BWn sFilePath = value; vxC];nCC# }
zp}pS2DU gt(p%~ d4^x,hzV public String getSFileName() /^k%sG@? { YG:^gi return sFileName; rTVv6:L } DC1.f(cdR Ert={"Q 8 M,@Mbn public void setSFileName(String value) An0N'yo"Z { Ay 4P_>^ sFileName = value; PlS)Zv3 } [M%?[E}> *c/V('D/ )AR-b8..o public int getNSplitter() \<T7EV. { FGyrDRDwC return nSplitter; p_&B+
<z } x7<l*WQ \z FCph4 c*E7nc)u public void setNSplitter(int nCount) \mJR^t { ~1}fL 1~5 nSplitter = nCount; j$/#2%OVN } $t}W,? } (}>)X] x4wTQ$*1 wEX<[#a- /* MaY_*[ **Utility.java 0uW)&>W */ UYJ>L package NetFox; +}?%w|8||s Al8Dw)uG{ $ ~%Y}Xt* public class Utility { I(7iD. ^: Q(yg bT !^98o:"x public Utility()
uM\\(g} { LA59O@r cl]W]^q-Cx Te?PYV- } &-Wt!X 3 8N9,HNBT$ //线程睡眠 mk!8>XvM public static void sleep(int nSecond) w42{)S" { SC4jKm2 try{ RfD#/G3| Thread.sleep(nSecond); /|UbYe, } oPa oQbR(A catch(Exception e) vf<Dqy <M. { HDzeotD e.printStackTrace (); @}!?}QU } {v=[~H>bt } dnwzf=+>e >.od(Fh{l| //日志 4xal m public static void log(String sMsg) W=293mME { ~'0n
]Fw System.err.println(sMsg); }b}jw.2Wu } \_R<Q?D+ R[v<mo[s L&:A59)1k public static void log(int sMsg) Vraz}JV { nFG X2|d System.err.println(sMsg); 4 Sk@ v } F-ofR]|)> } 4f8XO"k7t= @g;DA)!( %++:
K /* UukY9n];] **TestMethod.java noa+h<vGb */ r1RM7y package NetFox; 2h*aWBLk %P<fz1 h,BPf5\S public class TestMethod { $t"QLsk0 +N+117m mr#.uhd.z public TestMethod() Fec4 #}| { ///xx/weblogic60b2_win.exe {6qxg _{ try{ :PY8)39@K SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Ev [?5R //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); <im}R9eJ1 SiteFileFetch fileFetch = new SiteFileFetch(bean); e<`?$tZ3
fileFetch.start(); >Jn` RsuV } lnjs{`^ catch(Exception e){e.printStackTrace ();} "10\y{`v^ KV&6v`K/N F 8sOc&L } $J)`Ru6. !qlk-0&` M3]eqxLC public static void main(String[] args) bVN?7D( { _]Ob)RUVH new TestMethod(); iS.gN&\z^ } 9yTkZ`M28 } =1|p$@L`% 点击下载更多相关资料
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