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/* T-L5zu **SiteFileFetch.java 4 rB8Nm1 */ zhEo(kU!
package NetFox; cy3ww}) import java.io.*; @ RR\lZ import java.net.*; R9dP ,<2 q(]f]Vl|0 Cw1(5 public class SiteFileFetch extends Thread { r2eQ{u{nX mBl7{w;Iv =&U`9qN SiteInfoBean siteInfoBean = null; //文件信息Bean |qUrEGjiSS long[] nStartPos; //开始位置 uDG+SdyN@ long[] nEndPos; //结束位置 )s")y FileSplitterFetch[] fileSplitterFetch; //子线程对象 &sOM>^SAD long nFileLength; //文件长度 E20&hc5 8 boolean bFirst = true; //是否第一次取文件 ia{kab|_5 boolean bStop = false; //停止标志 T!^Mvat File tmpFile; //文件下载的临时信息 }=GM?,7b DataOutputStream output; //输出到文件的输出流 &TT":FPR " ~$$ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1kFjas`g public SiteFileFetch(SiteInfoBean bean) throws IOException [8]m8=n { X ,
ZeD siteInfoBean = bean; "E PD2,%S //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); HhSjR%6HY; tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); } p'8w\C$ if(tmpFile.exists ()) =7jEz+w# { l1-HO bFirst = false; X%4h(7;v read_nPos(); lizTRVBE } n(&*kfk else *BOBH;s { ~mH+DV3
nStartPos = new long[bean.getNSplitter()]; Jp]T9W\ nEndPos = new long[bean.getNSplitter()]; 1D1b"o } N/{?7sG& -<oZ)OfU 7:o+iP4 6 _Y-$}KwY! } rx:lKoOnB -9G]x{> &5q{viI public void run() p.Y$A
if. { YvTA+yL //获得文件长度 -CU,z|g+ //分割文件 lgT?{,>RkW //实例FileSplitterFetch u%opY<h //启动FileSplitterFetch线程 <o@ )SD~K //等待子线程返回 2V$9ei6 try{ F0;1zw if(bFirst) &%e"9v2` { )BLmoJOf nFileLength = getFileSize(); U42\.V0 if(nFileLength == -1) 1g i}H) { q<XcOc5 System.err.println("File Length is not known!"); k,]{NO
} s/S+ ec3 else if(nFileLength == -2) L?f qcW{ { 1URsHV!xcM System.err.println("File is not access!"); bOXh|u_3i } ZjD2u8e else @3 "DBJ { %HEmi; for(int i=0;i<nStartPos.length;i++) `@$YlFOW { Ihef$, nStartPos = (long)(i*(nFileLength/nStartPos.length)); LXxl ?D } lIl9ypikg for(int i=0;i<nEndPos.length-1;i++) 7.|S>+Q { `Kp}s< nEndPos = nStartPos[i+1]; s5.k|!K } Wf1-"Q nEndPos[nEndPos.length-1] = nFileLength; -s~p}CQ. } <4NQL*|> } ZOHRUm bX{PSjD g
=\13#F //启动子线程 J~2CD*v fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; m){&:Hs for(int i=0;i<nStartPos.length;i++) }rxFS
<j { M=Is9)y fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N[{]iQ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Ja=N@&Z# nStartPos,nEndPos,i); :wCC^Y] Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _6I >+9#C fileSplitterFetch.start(); SD I,M } CU !.!cZ{ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fW[.r== Kf siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); EQ~I'#m7 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 8 )`5P\ nEndPos = " + nFileLength); #ZwY?T
x // fileSplitterFetch[nPos.length-1].start(); (QhAGk&lu ]eL~L_[G\ %>NRna //等待子线程结束 ndt8=6p
//int count = 0; e)og4 //是否结束while循环 % NwoU%q boolean breakWhile = false; Ug` %J3lK]bv( Nuo<` 6mV@ while(!bStop) Es,0'\m& { %,E7vYjT% write_nPos(); fa.f(c Utility.sleep(500); L%4tw5*N breakWhile = true; C$0ITw .?7So3 t9n'! for(int i=0;i<nStartPos.length;i++) <sF!]R&4 { lZ+/\s,]| if(!fileSplitterFetch.bDownOver) _4S7wOq5 { BC&^]M breakWhile = false; ix+x3OCip break; 33S`aJ } @) ]t8( } ~l@%=/m if(breakWhile) a\|X^%2g break; B)(w%\M4^ "URVX1#(r gGD]t;<u //count++; ;W =by2x* //if(count>4) 3pzOt&T|w // siteStop(); r6/<&1[ } s
UvKA0 ,7/\&X<`B 4v i B=> System.err.println("文件下载结束!"); ;+!xZOmm } sd7Y6?_C catch(Exception e){e.printStackTrace ();} i@%L_[MtA } $jDD0<F.# ;vZ*,q6 ug>]U ~0 //获得文件长度 E ,Dlaq public long getFileSize() )z|_*||WU^ { J\9jsx!WQ int nFileLength = -1; .|tQ=l@I try{ iNMLYYq]l URL url = new URL(siteInfoBean.getSSiteURL()); *GB$sXF HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8cequAD httpConnection.setRequestProperty("User-Agent","NetFox"); g8B&u u # P/HHWiD`D ],WwqD= int responseCode=httpConnection.getResponseCode(); k0R,!F if(responseCode>=400) [ )B@ { puk4D processErrorCode(responseCode); _LLW{^V return -2; //-2 represent access is error *YMXiYJR } YlxUx Gf!t< =T %Gnd"SGs String sHeader; nT(!HDH d;IJ0xB+by F12S(5Z0% for(int i=1;;i++) 6i55J a { 4h[2C6
\+` //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); WIhIEU7 / //Utility.log(in.readLine()); _q2`m sHeader=httpConnection.getHeaderFieldKey(i); 3Bu D/bs if(sHeader!=null) =2Pz$q*ub { MX%|hIOpr if(sHeader.equals("Content-Length")) }"!6Xm { ,<IL*=a nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); pvK \fSr break; 1j_aH#Fz: } }C9VTJs| } &n,xGIG else 0fEZD$ break; xow6@M, } dpl"}+ } Vu^Q4Z catch(IOException e){e.printStackTrace ();} 2*b#+ b catch(Exception e){e.printStackTrace ();} !^rITiy gt(X!iN] Ss*LgK_ Utility.log(nFileLength); m(Pz7U.Q 3g4vpKg6c *=r@vQ return nFileLength; d{(s- } -sruxF _S[Rvb1e x`b~ZSNJ% //保存下载信息(文件指针位置) `Nxo0Q private void write_nPos() 6T5A31 Q { %`8KG(F^ try{ AiR%MD output = new DataOutputStream(new FileOutputStream(tmpFile)); c=uBT K* output.writeInt(nStartPos.length); Zi15wE for(int i=0;i<nStartPos.length;i++) 1D#T+t`[ { KR+ aY. // output.writeLong(nPos); 4C2>0O<^s output.writeLong(fileSplitterFetch.nStartPos); @Wlwt+;fT output.writeLong(fileSplitterFetch.nEndPos); i:NJ>b } 1`7]C+Pv output.close(); +"*l2E]5 } 0D W'(#` catch(IOException e){e.printStackTrace ();} l#<}|b catch(Exception e){e.printStackTrace ();} BHiw!S< } S0X.8Bq ^$T!@+: .F=<r-0 //读取保存的下载信息(文件指针位置) MC[`<W)u private void read_nPos() H-PW( { 3tx0y try{ !kjr>:)x DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); `:B int nCount = input.readInt(); kfG 65aa>_ nStartPos = new long[nCount]; [7ek;d;'t nEndPos = new long[nCount]; h|Teh-@A5 for(int i=0;i<nStartPos.length;i++) _
cHV3cz { Dg];(c+/ nStartPos = input.readLong(); 96([V|5K nEndPos = input.readLong(); e2_r0I^C } %$!R] B) input.close(); 9 Le/'o vq } v\r7.l:hf catch(IOException e){e.printStackTrace ();} 8kn]_6:3i catch(Exception e){e.printStackTrace ();} HCn]# } `eA&C4oFOO SFXfo1dqH [f0oB$ private void processErrorCode(int nErrorCode) )e <! =S { r5fz6" System.err.println("Error Code : " + nErrorCode); :p*ojl| } dcc%G7w >(1_Dn\ ^~*[~ //停止文件下载 +p%5/smfs public void siteStop() #xJGuYdv { R)DNFc: bStop = true; 8 MACbLY for(int i=0;i<nStartPos.length;i++) WPh |~]by< fileSplitterFetch.splitterStop(); m}'t'l4 c UHsrZgIRYT o )}< } ytcG6WN3 } Ty,)mx){) //负责部分文件的抓取 _|5FrN **FileSplitterFetch.java ~_^o?NE, */ Yqz[sz5+m package NetFox; ky
lr f4= ^|hRu{QW KTAe~y import java.io.*; %N AFU/& import java.net.*; X6"^:)&1M yADN_ (w@MlMk public class FileSplitterFetch extends Thread { eL$U M Kr}M>hF+| c#4L*$ViF String sURL; //File URL B$[%pm`'2 long nStartPos; //File Snippet Start Position $y]||tX long nEndPos; //File Snippet End Position ?}lp o; $ int nThreadID; //Thread's ID O%q;,w{prW boolean bDownOver = false; //Downing is over J#OE}xASoA boolean bStop = false; //Stop identical "}~i7NBB FileAccessI fileAccessI = null; //File Access interface Hr8$1I$= SpTORR8 XCi]()TZ_ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException j*Wh;I+h { '2qxcc o this.sURL = sURL; -aeo7C this.nStartPos = nStart; l1|,Lr this.nEndPos = nEnd; S&))
0d nThreadID = id; +qW w-8 fileAccessI = new FileAccessI(sName,nStartPos);//定位
qzbkxQu]g } ?GD?J(S ]OCJ~Zw \eSk7C public void run() Hpo?|;3D5 { }+RF~~H/ while(nStartPos < nEndPos && !bStop) oJ;O>J@c { {uQ)p= "VVR#H}{ ,IZxlf% try{ gBiQIhz URL url = new URL(sURL); r(2'0JQ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :R*^Izs= httpConnection.setRequestProperty("User-Agent","NetFox"); UE$[;Zg String sProperty = "bytes="+nStartPos+"-"; !7a^8
httpConnection.setRequestProperty("RANGE",sProperty); &)f++(i Utility.log(sProperty); /KvPiQ% m+8b2H:V xS\QKnG. InputStream input = httpConnection.getInputStream(); W<hdb!bE //logResponseHead(httpConnection); |I^Jn@Mq: 9xS`@ "` ;>8TNB e! byte[] b = new byte[1024]; +(P43XO08 int nRead; !DUg"o3G> while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) m ?"%&| { /zP)2q^ nStartPos += fileAccessI.write(b,0,nRead); G mUs U{ //if(nThreadID == 1) 41Q // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); huD\dmQ:] } Rc.<0# }GNH)-AG)$ n; '~"AG) Utility.log("Thread " + nThreadID + " is over!"); 'GdlqbX(% bDownOver = true; WUK.>eM0 //nPos = fileAccessI.write (b,0,nRead); A%8`zR } 4Z
p5o`*g2 catch(Exception e){e.printStackTrace ();} P;o>~Y>x } ].T;x| } 5!Mp#lO C`T5d =
Vr[V@ //打印回应的头信息 TKBK3N public void logResponseHead(HttpURLConnection con) 2yO)}g FJ { HNUR6H&Fta for(int i=1;;i++) w7?9e#>Z { ]4Yb$e` String header=con.getHeaderFieldKey(i); V5@[7ncVf if(header!=null) ue:P#] tx //responseHeaders.put(header,httpConnection.getHeaderField(header)); vKOn7 Utility.log(header+" : "+con.getHeaderField(header)); d*:qFq_ else Olh%"=*; break; wQuaB6E } 0]w[wc
< } 1Y"qQp Ri6 br =ZIFS public void splitterStop() eV=sDx { ?,e:c XhE2 bStop = true; Bv]wHPun } Y},GZ ^zqy G`lhvpifG n~i4yn= } 8jGoU9 `ip69 IF2* %f(.OR)6{ /* |oi49:NXn **FileAccess.java v6Wf7)d/1 *//文件访问(定位,写) VRP.tD package NetFox; [>9"RzEl import java.io.*; !4.^@^L|\ "8dnFrE [Et\~'2w8= public class FileAccessI implements Serializable{ Z5a@fWU 1% %Tm" //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 jy|xDQ RandomAccessFile oSavedFile; ssbyvzQ long nPos; aNU%OeQA 6}lEeMRW Q>g$)-8 public FileAccessI() throws IOException 8/$iCW { P2RL\`<" this("",0); &_9eg } ]H'82a ddhTri'f l8lR5< public FileAccessI(String sName,long nPos) throws IOException .Tqvy)' { wTbIS~!gF oSavedFile = new RandomAccessFile(sName,"rw"); %=
;K>D this.nPos = nPos; :@A;!'zpL oSavedFile.seek(nPos); OWfj<#}t+ } `;2`H, G' Xn'>k[}<k 19`0)pzZ*P public synchronized int write(byte[] b,int nStart,int nLen) JN-8\L { ' *C)S int n = -1; (\Zo"x;( try{ cU[pneY oSavedFile.write(b,nStart,nLen); I
T2sS6&R n = nLen; b>._ r&. } n:)Y'52} catch(IOException e) {X"]92+ { dg8\(G e.printStackTrace (); > o`RPWs } @CUDD{1o <"% h1{V %4K#<b"W return n; %d\+(:uu/ } A8Y~^wn T`[ZNq+${ )`7h,w
J[1 } 5R
G5uH/-< hrt-<7U u#|Jl|aT /* _Hj,;Z **SiteInfoBean.java Oip..f0 */ %=eD)p7l- package NetFox; 3iL&;D iiB$<b.((I rWmi 'niu public class SiteInfoBean { M_I\:Q .1lc'gu5y l6Bd<tSH private String sSiteURL; //Site's URL Bn:sN_N private String sFilePath; //Saved File's Path pz =Wq4l private String sFileName; //Saved File's Name P*sCrGO% private int nSplitter; //Count of Splited Downloading File ?C\9lLX B6&Mtm1 K#m o+n5-; public SiteInfoBean() V#KM~3e {//nSplitter的缺省值为5 H@2+wr)$} //default value of nSplitter is 5 1D]wW%us this("","","",5); ?&_\$L[ } ~;Kl/Z IW*.B6Hw8 j
pV public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) syvi/6 { 1!#ZEI C sSiteURL= sURL; Pw.+DA sFilePath = sPath; xbA2R4| sFileName = sName; 3|3lUU\I this.nSplitter = nSpiltter; }"tYb6* XE\bZc ]0E- lD0J } Zv7)+Q =v9;HPiO SBt:
`, public String getSSiteURL() inrL'z { '5\1uB PKW return sSiteURL; aR $P}]H } K.Z{4x=0 VUy
1?n
7]bqs"t public void setSSiteURL(String value) 0T;WN$W| { &Y$rVBgQ sSiteURL = value; H\vO0 <X } 5H2|:GzUc
)G&OX V"73^ public String getSFilePath() *^ BE1- { yD"sYT return sFilePath; Mk;j"ZDF } 0}N^l=jQ Fsh-a7Qp plAt
+*& public void setSFilePath(String value) cPSu!u}D { EbHeP sFilePath = value; ,5:86'p } +0DIN4Y(4 ~JiA Fy^\U w public String getSFileName() uv!/DX# { jL<.?HE return sFileName; D![Twlll } DGnswN%n1 Hn)=:lI RZjR d public void setSFileName(String value) sMK/l @7 { B^{DCHu/ sFileName = value; sYzG_*) } &V
L<Rx `Ii>wb .wywO| public int getNSplitter() >xN^#$ng} { gUcE,L return nSplitter; CgWj9 [ } Pcc%VQN &~8}y+z qsp,Usu/ public void setNSplitter(int nCount) E7D
DMU { -~g3?!+Hb nSplitter = nCount; ;DTNw= } [B[ J%?NS } PZ s Z:Wix|,ONS TH-^tw /* qCMcN<:> **Utility.java dGg+[? */ s0u$DM2 package NetFox; gqhW.e}] +Muyp]_ ;&!l2 UB% public class Utility { =@'"\
"Nh G+}LLm.wX =[,adB
public Utility() jn[a23;G) { iX28+weH ':=C2x1d| t65!2G"< } |w5#a_adM 1NTe@r!y //线程睡眠 *=8)]_=f public static void sleep(int nSecond) C{D2mSS { ?/\;K1c p try{ C"}x=cK Thread.sleep(nSecond); xl3U } |Yx8Ez catch(Exception e) :1iw_GhJf { O]>Or3oO e.printStackTrace (); km^AX:r1 } z(ajR*\# } B@4#y9`5 I'gnw~ //日志 x[X.// : public static void log(String sMsg) D7@10;F}[ { ^V:YNUqp# System.err.println(sMsg); &Fi8@0Fh } Um~jp:6p }MX`WW0\]Z ~?p
> L public static void log(int sMsg) ms$o,[ { %wO~\:F8 System.err.println(sMsg); X}ZOjX! } 1li`+~L
F } (#:Si~3 ;9~z_orNQZ }yw\+fc /* {*2A%}S **TestMethod.java U{x'@/Ld */ kB
2bT} package NetFox; sw&Qks?V v6GWD}HH, u32<=Q[ public class TestMethod { zb<+x(0y" &$=F$ kK(633s public TestMethod() )sQbDA|p { ///xx/weblogic60b2_win.exe Ub"\LUu try{ 8c~H![2u SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); >eXNw}_j
//SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); |LQmdgVr$ SiteFileFetch fileFetch = new SiteFileFetch(bean); 9.R_= fileFetch.start(); 'fB `e]_ } yF:fxdpw catch(Exception e){e.printStackTrace ();} X>CYKRtb F,D& mB\5bSFY` } u,C-U!A ,ToED C{Fo^-3 public static void main(String[] args) sqy5rug { RPrk]<<1 new TestMethod(); o
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