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/* O|_h_I-2 **SiteFileFetch.java U`hY{E; */ $1SUU F\. package NetFox; 8QMPY[{ import java.io.*; ~/j\Z import java.net.*; ;#Q%j%J cX3l t5 Sp@-p9# public class SiteFileFetch extends Thread { #m={yck * n_'{^6*O (5\NB0 SiteInfoBean siteInfoBean = null; //文件信息Bean (h:Rh long[] nStartPos; //开始位置 3Gkv4,w< long[] nEndPos; //结束位置 6AocmR0D' FileSplitterFetch[] fileSplitterFetch; //子线程对象 \l~*PG2 long nFileLength; //文件长度 (Cqn6dWK boolean bFirst = true; //是否第一次取文件 hpU2 boolean bStop = false; //停止标志 Ewg:HX7<( File tmpFile; //文件下载的临时信息 7 [0L9\xm DataOutputStream output; //输出到文件的输出流 /hO1QT}xd .`&F>o(A //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) .1LCXW= public SiteFileFetch(SiteInfoBean bean) throws IOException Nz)l<S9> { kZ"BBJ6w siteInfoBean = bean; IsR!'%Pu //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); @V!r"Bkg. tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); K$d$m < if(tmpFile.exists ()) /&4U6a { ^Ox3XC bFirst = false; %iw3oh&Fkm read_nPos(); iQ"XLrpl } )vxUT{;sH else t45Z@hmcW { RD.V'`n" nStartPos = new long[bean.getNSplitter()]; --DoB=5%8 nEndPos = new long[bean.getNSplitter()]; "^Ybs'-
} H*r>Y i7ly[6{^pr 4ni3kmvX A=
w9V } P67o{EdK b6*!ACY 1x,tu}<u^ public void run() jq!tT%o*B { =)7s $
p //获得文件长度 MuSUKBhM //分割文件 {`w;39$+ //实例FileSplitterFetch Pfs;0}h5 //启动FileSplitterFetch线程 D:K4H+ch //等待子线程返回 S<J}[I7V try{ %$DI^yS if(bFirst) \W`w` o { |p-t%xDdr nFileLength = getFileSize(); 95V@X
^Ee if(nFileLength == -1) 6VhjJJ { x@Hc@R<! System.err.println("File Length is not known!"); !e?.6% %
} ivz{L- else if(nFileLength == -2) CH<E,Z
C1T { 42qYg(tZ System.err.println("File is not access!"); Tq~=TSD } >&U,co$> else )sT> i { J^g!++|2P for(int i=0;i<nStartPos.length;i++) jt.3P { to$h2#i_ nStartPos = (long)(i*(nFileLength/nStartPos.length)); ~appY Av } 6!(@@^7{* for(int i=0;i<nEndPos.length-1;i++) )<Hd T { D~\$~&_]= nEndPos = nStartPos[i+1]; Qg<(u?7N } (!zy{;g| nEndPos[nEndPos.length-1] = nFileLength; $-*!pRaVU } >HS W]"k } C;vtY[}< 0a "c2J fP `b>]N_ //启动子线程 )
v,:N.@Q fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; uF3qD|I\ for(int i=0;i<nStartPos.length;i++) $
<#KA3o\ { X7g1:L1Ys fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), yT,.z 0 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =>! Y{:
y( nStartPos,nEndPos,i); EB8\_]6XJ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); x3"#POp fileSplitterFetch.start(); c*@E_}C# }
1wP- // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,5*eX siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ^:Gie // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", n;T7= 1_" nEndPos = " + nFileLength); ?28N ^ // fileSplitterFetch[nPos.length-1].start(); Aj4T"^fv CtS l 3z&Fi;<+j //等待子线程结束 >M/V oV //int count = 0; 8Bjib&im //是否结束while循环 XUlS\CH@{ boolean breakWhile = false; Q{lpKe0 rq/I` : t>$kWd{9e; while(!bStop) eXf22;Lz { k>g_Z`%< write_nPos(); ikSt"}/hd Utility.sleep(500); d >t<_} breakWhile = true; +lMX{es\O tyqT +P`*kj-P\ for(int i=0;i<nStartPos.length;i++) 7w6cwHrL@ { csW43& if(!fileSplitterFetch.bDownOver) P IwFF}<( { Tap.5jHL breakWhile = false; O2%? break; "*srx] } LB a[:j2 } c:o]d )S if(breakWhile) [CXrSST")E break; Z
Z:}AQ [.uG5%fa $NZ-{dY{ //count++; 8Y7Q+p|O //if(count>4) 7OJ'){R$ // siteStop(); W)f/0QX}W } qtQ6cqLd 5?F__Hx*2 ei[j1F System.err.println("文件下载结束!"); .Lsavpo } N%*5 T[. catch(Exception e){e.printStackTrace ();} <BMXCk } E{Ov>osq \Yc'~2n r'HtZo$^R //获得文件长度 l^pA2yh| public long getFileSize() P>NF.BCq { r[b(I@T+ int nFileLength = -1;
c_'OPJ try{ Ne[7gxpu URL url = new URL(siteInfoBean.getSSiteURL()); =06gj)8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #\ X#w<\? httpConnection.setRequestProperty("User-Agent","NetFox"); rzm:Yx noml8o x"gd8j]s int responseCode=httpConnection.getResponseCode(); 5BlR1* if(responseCode>=400) j)/nKh4O { +~mA}psr processErrorCode(responseCode); 'kL#] return -2; //-2 represent access is error R |(q } ;kS&A( C8 xZ;V] QSszn`e String sHeader; !`,Sfqij "NXB$a!: ]<cK"; for(int i=1;;i++) :+z4~%
jA { d(:8M //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); FrL]^59a //Utility.log(in.readLine()); o7sT=x9 sHeader=httpConnection.getHeaderFieldKey(i); %t" CX5n if(sHeader!=null) ~M7y*'oY { &:dH, if(sHeader.equals("Content-Length")) -- %N8L;e { qUob?|
^ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); DRp~jW(\y break; lyy W } %.^_Ps0 } Jrti
cK$ else *E/`KUG] break; Q@<S[Qh[. } )4<__|52"1 } R`DKu= catch(IOException e){e.printStackTrace ();} <`B,R*H{ catch(Exception e){e.printStackTrace ();} D#il* s;S?;(QI VEqS;~[ Utility.log(nFileLength); w$z}r g*e _wkVwPr return nFileLength; AX;8^6.F3 } h_:C+)13`x Gb#Cm] ur$
_ //保存下载信息(文件指针位置) G-xDN59K private void write_nPos() ftvG\T f { juka0/ try{ Rs-]N1V output = new DataOutputStream(new FileOutputStream(tmpFile)); 1zm ulj%& output.writeInt(nStartPos.length); tiB_a}5IB for(int i=0;i<nStartPos.length;i++) 3DiLk=\~ { 8\^}~s$$A // output.writeLong(nPos); 9[b<5Llt output.writeLong(fileSplitterFetch.nStartPos); -Zf@VW,NI output.writeLong(fileSplitterFetch.nEndPos); Xjo5v*P u } <>s`\ % output.close(); cZB7fmq% } ,SynnE68 catch(IOException e){e.printStackTrace ();} =(NB%} catch(Exception e){e.printStackTrace ();} E^ P,*s } uC+V6; %{AO+u2i e+$p9k~ //读取保存的下载信息(文件指针位置) T (OW private void read_nPos() P
`}zlml { ^?cz,N~ try{ *)ardZV${ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); R< ,`[* Z int nCount = input.readInt(); Pz>s6 [ob nStartPos = new long[nCount]; n[ T[DCQ, nEndPos = new long[nCount]; #E?(vA1 for(int i=0;i<nStartPos.length;i++) MBt9SXM { uw[<5 nStartPos = input.readLong(); lD^]\;? nEndPos = input.readLong(); 8YZbP5' } ??PC
k1X input.close(); Izhee%c } ^B(V4-| catch(IOException e){e.printStackTrace ();} y4t7`-,~ catch(Exception e){e.printStackTrace ();} S4^vpY
DeN } W3IpHV aGJC1x Bg&i63XL$$ private void processErrorCode(int nErrorCode) mQCeo}7N5 { CN#+U,NZV System.err.println("Error Code : " + nErrorCode); SH_(rQby } 9:ze{ c $ -~v|Rt &y3OR1_Sm* //停止文件下载 i=i(%yQ% public void siteStop() RIb4!!',c { 73V|6tmgY bStop = true; 3a?o3= for(int i=0;i<nStartPos.length;i++) *+j*{>E fileSplitterFetch.splitterStop(); gZLP\_CL .q
`Hjmg< ZAv,*5&< } Fs{x(_LOr } z.GMqW%B //负责部分文件的抓取 E=e*VEjy **FileSplitterFetch.java e?7&M */ aa>xIW,u package NetFox; bn^{c 4 !y%O BFL`!^ import java.io.*; jUSmqm' import java.net.*; V}dJ.I /# n` xR5!de 2] zq#6ix public class FileSplitterFetch extends Thread { /LO-HnJ [x9KVd ^d 3):A String sURL; //File URL t.laO. 3 long nStartPos; //File Snippet Start Position 9?0^ap,T long nEndPos; //File Snippet End Position I_<I&{N> int nThreadID; //Thread's ID -7S g62THS boolean bDownOver = false; //Downing is over KVD8YfF boolean bStop = false; //Stop identical +6';1Nb@ FileAccessI fileAccessI = null; //File Access interface i%/Jp[e\W> qOSM}ei>s ~ vJ,`? public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException VH+%a<v" { c17_2 @N this.sURL = sURL; f7=((5N this.nStartPos = nStart; pgOQIzu this.nEndPos = nEnd; i(iXD nThreadID = id; G*-b}f fileAccessI = new FileAccessI(sName,nStartPos);//定位 |962G1. } _>|
=L
W@7 $4/yZaVb DpUbzr41+k public void run() Fxm$9(Y { w)Q0_2p. while(nStartPos < nEndPos && !bStop) )rekY; { cUA7#1\T= +R|z{M)* |h;0H` try{ m^bNuo URL url = new URL(sURL); B oC5E#;G HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~S8* t~ httpConnection.setRequestProperty("User-Agent","NetFox"); i70wrW#k String sProperty = "bytes="+nStartPos+"-"; ApAO/q httpConnection.setRequestProperty("RANGE",sProperty); i[?Vin Utility.log(sProperty); \3pc"^W R'C2o] &o,<ijJ:^m InputStream input = httpConnection.getInputStream(); fpFhn //logResponseHead(httpConnection); cNM3I,o7 Bh;7C@dq iZM+JqfU|D byte[] b = new byte[1024]; Q0&H#xgt int nRead; "
N9 <w U while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) =y0C1LD+ { yuat" Pg nStartPos += fileAccessI.write(b,0,nRead); OH">b6>\ //if(nThreadID == 1) UFp,a0| // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); DV<` K$ET } joiL{ 4}4Pyjh rvXWcu -" Utility.log("Thread " + nThreadID + " is over!"); 1 D<_N bDownOver = true; 2vAQ //nPos = fileAccessI.write (b,0,nRead); Kfh| } YKO){f5 catch(Exception e){e.printStackTrace ();}
@I_8T$N= } ;|vpwB@B } ?e,pN,4 "a8j"lPJ )6|yb65ZUX //打印回应的头信息 hvDNz"ec{ public void logResponseHead(HttpURLConnection con) 5[*
qi?w= { c6X}2a' for(int i=1;;i++) %jJ>x3$F { /J:bWr String header=con.getHeaderFieldKey(i); /4`
0?/V if(header!=null) <iH`rP# //responseHeaders.put(header,httpConnection.getHeaderField(header)); 1e&QSzL Utility.log(header+" : "+con.getHeaderField(header)); .zn;:M#T else ]8f ms( break; RV5n,J } -5I2ga } QrYpZZ; 1rkE yh?? WIv?}gi:
X public void splitterStop() ~[\_N\rm { a^=-Mp bStop = true; ? P(
ZA } uoXAQ6k !!`!|w 2UFv9 } t=-SH^$SR /Rg*~Ers
* _c,'>aH= /* ,ztI,1"k **FileAccess.java s;64N'HH *//文件访问(定位,写) }w1~K'ck}> package NetFox; z&{5;A}Q@ import java.io.*; *7h!w!LN~ IaT$6\> %YSu8G_t public class FileAccessI implements Serializable{ `~ * @q! VxXzAeM //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 US%^#D q RandomAccessFile oSavedFile; N9vP7 long nPos; >&p0d0 'ul~7h;n IjR'Qou5 public FileAccessI() throws IOException opJMS6%r { -tyK~aasQ this("",0); ;d'Z|H; } |"9 #bU Xa[?^P :P@rkT3Q t public FileAccessI(String sName,long nPos) throws IOException ltD37QZQ { <F.Tx$s oSavedFile = new RandomAccessFile(sName,"rw"); NN1$'"@NL this.nPos = nPos; ]f_6 '|5A oSavedFile.seek(nPos); YBP:q2H } a'jR#MQl? Xixqxm*8 * C6a?] public synchronized int write(byte[] b,int nStart,int nLen) =n'
4?W@ { ty*@7g0k int n = -1; mBG=jI "xh try{ hweaGL t0 oSavedFile.write(b,nStart,nLen); -atGlu2 n = nLen; nE^Qy=iE } 1s{^X
- catch(IOException e) " $ew~;z { NM6Teu_ e.printStackTrace (); pmFk50` } N]<!j$pOz !DI{:I_h( Z+StB15 return n; p!<$vE } 3t0[^cY8=z B-T/V-c7 5n
^TRB } ,s_T pq ]wWPXx[>/ Q26qNn
bK /* W5' 3$,X9 **SiteInfoBean.java vUnRi=:| */ vQa'S-@u package NetFox; vYU;_R (} 5S 4ON_$FUe public class SiteInfoBean { |K^"3`SJ mnID3=JF Vm|Y$C private String sSiteURL; //Site's URL \6 93kQ private String sFilePath; //Saved File's Path 80$fG8 private String sFileName; //Saved File's Name /2RajsK private int nSplitter; //Count of Splited Downloading File [*Z`Kc Na\WZSu'" /2m?15c+ public SiteInfoBean() ~Wp Gf, {//nSplitter的缺省值为5 N<L`c/ //default value of nSplitter is 5 tWdhDt8$& this("","","",5); lMz<s } Ol')7d& c0Dmq)HK? :v L1}H< public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) A~dQ\M { .Xdj(_& sSiteURL= sURL; $) 5Bf3P0 sFilePath = sPath; Do]*JO)( sFileName = sName; nSCWg=E^ this.nSplitter = nSpiltter; 1'4J[S\cM M@thI%lR \Yoa:|%*y } =9LC<2 "|m|E/Z-9 Ce'pis public String getSSiteURL() ./p|?pu
{ M]-VHI[&W return sSiteURL; (Bo bB]~a } Fn^C{p^ s(_+!d6 b59{)u4F public void setSSiteURL(String value) .!}hhiF,Z { ?R5'#|EyX sSiteURL = value; wVq\FY% } 5=KF!? AA:no= YGsS4ia*4i public String getSFilePath() `Vq`z]} { +3,|"g:: return sFilePath; Z7jX9e"L } OSzjK7: /dDzZ%/@ @1R8-aa-r public void setSFilePath(String value) jLcHY-P0V { QT#6'>&7-b sFilePath = value; <SVmOmJ-K } <3hA!$o~ jK8'T_Pah *wi}>_\ public String getSFileName() N*DhjEU)[ { Xev54!619 return sFileName; 0p fnV% } tL0`Rvl "D*Wi7
&C-;S a4 public void setSFileName(String value) :k46S<RE { oj}"H>tTp sFileName = value; )qPSD2h } F?Or;p5`Y J?P]EQU ~_ !ts{[E public int getNSplitter() .9LL+d { #B\=Aa`* return nSplitter; r@T| e } r3I,11B 2w?G.pO# bdV3v` public void setNSplitter(int nCount) .#^0pv! { 1a9w(X nSplitter = nCount; Kla:e[{ } Q:S\0cI0 } ~4
FDKUC s?O&ZB2GM[ ~q% /* Goj4`Hc **Utility.java BV9 *s */ |#TXE|#ux package NetFox; da*9(!OV ;.Zh,cU DY><qk public class Utility { )
YSh D X9'xn 0n; R @r{ public Utility() ]+IVSxa!u { XUsy.l/ @;9()ad .]Ybp2`"U } MOV =n75 jA2ofC //线程睡眠 ?;8M^a/ public static void sleep(int nSecond) ug6r]0] { i=Kvz4h try{ a!.!2a&t Thread.sleep(nSecond); onzA7Gre } -fM1$/] catch(Exception e) z\[(g { fH!=Zb_{8 e.printStackTrace (); ct\<;I(H } nx :)k-p_[ } Z90Fcp:R 70<K.T<b //日志 S 1ibw \' public static void log(String sMsg) pSrsp r { sUda
System.err.println(sMsg); >PH< N } ZPYH#gC&T N K"%DU< {Vl"m2 public static void log(int sMsg) <"ae4 { |
W?[,|e System.err.println(sMsg); F=5kF/}x-z } hE5G!@1F } 3AP YO o?=fhc %f#\i#G<k /* MZiF];OY **TestMethod.java GsRt5?X/* */ (o{)>D package NetFox; c.6QhE >!G5]?taa }Y$VB%&Hy public class TestMethod { +TWJNI lzI/\% `~KAk public TestMethod() SJF 2k[da { ///xx/weblogic60b2_win.exe fcn_<Yh0W try{ %SFw~%@3&~ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); (T;1q^j //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); zlN+edgY#, SiteFileFetch fileFetch = new SiteFileFetch(bean); fIlIH fileFetch.start(); X~#@rg!" } p?KCVvx$ catch(Exception e){e.printStackTrace ();} OT"lP(, (F_7%!g1d G)K9la<p } C!I\Gh }cyq'mi 5M]6'X6I public static void main(String[] args) <6gU2@1 { rufRaar new TestMethod(); ^S3A10f, } PwRNBb}6 } 7?*~oVZW 点击下载更多相关资料
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