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/* gbP]!d:I **SiteFileFetch.java ;~&F}!pQ */ aS^
4dEJ package NetFox; Q@]QPpe import java.io.*; `0@onDQVc= import java.net.*; /8S g< fc'NU(70c faqOGAb public class SiteFileFetch extends Thread { nf,R+oX CzP?J36W^ 3`ov?T(H SiteInfoBean siteInfoBean = null; //文件信息Bean jhd&\z- long[] nStartPos; //开始位置 $^ \8-k " long[] nEndPos; //结束位置 mnKSO FileSplitterFetch[] fileSplitterFetch; //子线程对象
y.$/niQ% long nFileLength; //文件长度 efj[7K.h boolean bFirst = true; //是否第一次取文件 ZzU3j ^ boolean bStop = false; //停止标志 }9w?[hXW" File tmpFile; //文件下载的临时信息 PU0Ha DataOutputStream output; //输出到文件的输出流 3I87|5V,Z N5>ioJj //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) by 'P} public SiteFileFetch(SiteInfoBean bean) throws IOException 9oOr-9t3 { _*d8:|qw siteInfoBean = bean; o!q3+Pp;} //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); D4e*Wwk tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); U)Cv_qe if(tmpFile.exists ()) i%jti6z$Hr { F iZe4{(p bFirst = false; -YF]k}| read_nPos(); ,>6s~' } &xKln1z' else rJ2yi6TB\ { \'z&7;px nStartPos = new long[bean.getNSplitter()]; *v+xKy#M nEndPos = new long[bean.getNSplitter()]; lTl-<E; } tI2V)i! 7 &y'\ E$B7E@(U [ML%u$- } oBfh1/<<a "bI'XaSv )%8 ;C]G; public void run() c{YBCWA { aRPpDSR?l //获得文件长度 W(^R-&av //分割文件 FsZW, //实例FileSplitterFetch #G'Y2l //启动FileSplitterFetch线程 qmNg Ez% //等待子线程返回 ,(h:0L2v7d try{ oD_n+95B
if(bFirst) T$ <l<.Qd { q J)[2:.G nFileLength = getFileSize(); ELh`|X if(nFileLength == -1) PL;PId<9w { [1pWg^ System.err.println("File Length is not known!"); `a$-"tW~j } drr
W?U else if(nFileLength == -2) JQ-O=8] { s&T"/4 System.err.println("File is not access!"); .UxbwTup } YVcFCl else 5](-(?k}~ { 6Vr:?TI7 for(int i=0;i<nStartPos.length;i++) |?zFm
mh { tOQ2947zk nStartPos = (long)(i*(nFileLength/nStartPos.length)); dMo456L } A .]o&S} for(int i=0;i<nEndPos.length-1;i++)
: ,0F_["3 { _!vxX] nEndPos = nStartPos[i+1]; }/dGC;p" } O$<m(~[S nEndPos[nEndPos.length-1] = nFileLength; K9{]v=#I } '@~\(SH } \Y37wy4 m tPmVze cV=0)'&<`_ //启动子线程 O+8]y4%5 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; u"WqI[IV for(int i=0;i<nStartPos.length;i++) "x;|li3; { K) e;*D fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {#-I;I: siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), qfRsp
rRI" nStartPos,nEndPos,i); 2)_Zz~P^f Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); IP#w fileSplitterFetch.start(); BZ2frG\0&I } 0rnne
L // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Z/Vb _ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Me*woCos' // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", oP[R?zN nEndPos = " + nFileLength); Y~FN`=O // fileSplitterFetch[nPos.length-1].start(); Bo)N<S_=^ %E1_)^^ uT")j,tz //等待子线程结束 }f/xMp-Y //int count = 0; FLWQY, //是否结束while循环 w.AF7.X`1 boolean breakWhile = false; 6p=OM=R ^p@R!228
vvWje:H while(!bStop) x{GKz# { l"T{!Oq write_nPos(); OI@;ffHSW Utility.sleep(500); {x&"b - breakWhile = true; A.f!SYV6 ymNL`GYN[ Ptj,9bf<\ for(int i=0;i<nStartPos.length;i++) S"}G/lBx. { @ V_@r@A if(!fileSplitterFetch.bDownOver) ;v}f7v ' { G<dWh.|`= breakWhile = false; dV~d60jOF break; 28u3B2\$ } 71g\fGG\
} <1^\,cI2 if(breakWhile) -XbO[_Wf
break; f( %r)% 5V"Fy&}: $|0?$U7! //count++; N:4oVi@Je //if(count>4) AK$h
SM // siteStop(); t<UtSkE1 } 3#d? '[T#d! T JDa=+\_ System.err.println("文件下载结束!"); |._9;T-Yde } cH==OM7&- catch(Exception e){e.printStackTrace ();} KNI* : } ?3=D-Xrb ])v,zp"u Y6&B%t<bo //获得文件长度 zi7>!#( public long getFileSize() ,JLY
oE+ { E#5$O2b# int nFileLength = -1; Rt%3\?rf try{ E0SP URL url = new URL(siteInfoBean.getSSiteURL()); @c>a HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o ?9k{ httpConnection.setRequestProperty("User-Agent","NetFox"); equ|v~@y r[u@[ Nt>wzPd) int responseCode=httpConnection.getResponseCode(); sKIpL(_I$ if(responseCode>=400) 7KB:wsz^ { -5&|"YYjr{ processErrorCode(responseCode); 1@i 8ASL return -2; //-2 represent access is error U\<8}+x } &EZq%Sd W7sx/O9 b*AL,n? String sHeader; q#=}T~4j T+$Af,~ 6+Y^A})(F- for(int i=1;;i++) A_:YpQ07@ { }@+{;" //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); W5&;PkhQ6 //Utility.log(in.readLine()); 0EA<ip sHeader=httpConnection.getHeaderFieldKey(i); ;aI`4; if(sHeader!=null) $L@os2 { z 8w&;Ls if(sHeader.equals("Content-Length")) MO1t0My c { ;Wo\MN nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +!'rwD break; .b3cn } v ?9 } e>FK5rz else UNc[h&@_ break; H&yK{0H } ec$kcD! } cb9ndZ)v. catch(IOException e){e.printStackTrace ();} {[i
37DN catch(Exception e){e.printStackTrace ();} D:r+3w:l] _@U11| 8M"0o}wx Utility.log(nFileLength); >f ! -0tHc=\u( b }^ylm return nFileLength; *8a8Ng } H*h 7Y*([ +OM9v3qJ 5LIbHSK //保存下载信息(文件指针位置) _Di";fe? private void write_nPos() O|Z5SSlk { mvCH$}w8& try{ NrNxI'MG output = new DataOutputStream(new FileOutputStream(tmpFile)); ++Z,U output.writeInt(nStartPos.length); &~6W!w for(int i=0;i<nStartPos.length;i++) [q<Vm- { Z2%ySO // output.writeLong(nPos); |z5`h output.writeLong(fileSplitterFetch.nStartPos); O.9r'n4f output.writeLong(fileSplitterFetch.nEndPos); %GY U$aA } U|NVDuo{{x output.close(); X}Oo5SNgff } I Ceb2R catch(IOException e){e.printStackTrace ();} R
_c!
,y catch(Exception e){e.printStackTrace ();} NDmTxW#g } (B0tgg^jj, 5y1:oiE/ tbNIl cAWS //读取保存的下载信息(文件指针位置) 3~r>G private void read_nPos() {cYS0%Go { G(;C~kHX try{ 6oQSXB@ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); -=+@/@nV int nCount = input.readInt(); {p70(
]v nStartPos = new long[nCount]; G!^}z(Mgi nEndPos = new long[nCount]; w7;,+Jq for(int i=0;i<nStartPos.length;i++) Q;'{~! = { l1EI4Y9KG nStartPos = input.readLong(); +ROwk nEndPos = input.readLong(); YyF=u~l } `u *:wJsv input.close(); TsvF~Gdp } >@mvb@4* catch(IOException e){e.printStackTrace ();} DO^K8~] catch(Exception e){e.printStackTrace ();} $?e_l
} E &wz0d;gf JF+E.-fy$ y\xa<!:g private void processErrorCode(int nErrorCode) v Mi&0$ { qkLp8/G>pO System.err.println("Error Code : " + nErrorCode); 6UXDIg= } zj+.MG04 q>E[)\+y "s6\l~+9l //停止文件下载 da,Bnze0 public void siteStop() A:?|\r { y9#r
SA* bStop = true; }3Mnq?.- for(int i=0;i<nStartPos.length;i++) j\uh]8N3< fileSplitterFetch.splitterStop(); q\`0'Z, >7[o=!^:4 Vzs_g]V } j&c YRKpz } B F,8[|%# //负责部分文件的抓取
RAh4#8] **FileSplitterFetch.java whoQA}X> */ @C?.)# package NetFox; A\1X- Mm Z#1'STg iz0GL&< import java.io.*; S=N3qBH6 import java.net.*; ?|`Ba- n'42CE 5N_w(B public class FileSplitterFetch extends Thread { zD9gE 1h[xVvo<L SFiK_; String sURL; //File URL 8(b
C. long nStartPos; //File Snippet Start Position KH~o0 W long nEndPos; //File Snippet End Position 'Y%@fZf x int nThreadID; //Thread's ID 2#1G)XI boolean bDownOver = false; //Downing is over ^_Ap?zn boolean bStop = false; //Stop identical 0[O ."9 FileAccessI fileAccessI = null; //File Access interface +'@j~\>^yJ 6N<v&7cSB 2j UEL=+Y public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ]m(C}} { \?VNr2 this.sURL = sURL; eL` }j9 this.nStartPos = nStart; 'T7=.Hq<4 this.nEndPos = nEnd; [ljC S nThreadID = id; {wNNp't7 fileAccessI = new FileAccessI(sName,nStartPos);//定位 \%!
t2=J! } }=fVO<Rv Wt ,t5 #AN]mH public void run() B}&9+2M { v"K # while(nStartPos < nEndPos && !bStop) q5UD!&W { n$03##pf b)e';M h,(f3Ik0O try{ ^s;xLGl] URL url = new URL(sURL); *2(W`m HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,2R7AHk httpConnection.setRequestProperty("User-Agent","NetFox"); TB@0j
;g String sProperty = "bytes="+nStartPos+"-"; {+SshT>J httpConnection.setRequestProperty("RANGE",sProperty); b;K];o-/f Utility.log(sProperty); keMfK]9 yt@;yd:OEk 6~rO( InputStream input = httpConnection.getInputStream(); XS&oW //logResponseHead(httpConnection); c2,;t)%@E H/I1 n\ @|i
f^ byte[] b = new byte[1024]; 0YApaL+jt int nRead; Ny6 daf3f while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) iem@K { 0]._|Ubn6) nStartPos += fileAccessI.write(b,0,nRead); 9eh9@~mU"l //if(nThreadID == 1) XeJ|Z)qZ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `-J$7)d@ } WYayr1 dTwZ-% 2`ED?F68gH Utility.log("Thread " + nThreadID + " is over!"); {f12&t bDownOver = true; M<
1rQW' //nPos = fileAccessI.write (b,0,nRead); DJGq=* } v
Wt{kg; catch(Exception e){e.printStackTrace ();} @}r2xY1 } uh8+Y%V
p } OZ9ud ]@\ (0cL!
N;; bY>JLRQJ- //打印回应的头信息 =/6rX"\P public void logResponseHead(HttpURLConnection con) nbhzLUK { n1mqe*Mvs/ for(int i=1;;i++) wBb J
\ { rF*L@HI String header=con.getHeaderFieldKey(i); D|lm, if(header!=null) S7A[HG; //responseHeaders.put(header,httpConnection.getHeaderField(header)); M*xt9'Yd Utility.log(header+" : "+con.getHeaderField(header)); pVGH)6P>| else ER)<Twj break; P_Bhec|#fT } [&B}{6wry } <.N337! Y2B",v" M
}H7`,@I public void splitterStop() 2!y %nkO* { vvDaL$ bStop = true; `H7V[' } 4NN81~v 4 \kQ@G )HFl 0[vT } TfFuHzZZ _Q
$D6+ {;kH&Pp /* :AzP3~BI **FileAccess.java F:P&hK *//文件访问(定位,写) ndY1j5 package NetFox; *a2y import java.io.*; Z#i5=,Bk ! 54(K6a[ jcuC2t public class FileAccessI implements Serializable{ ~:|qdv%\ u>cU*E4/ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 S(b5Gj/Kd RandomAccessFile oSavedFile; OGC|elSM long nPos; (ru9Ke%Dx POouO/r$ ;44?`[oP public FileAccessI() throws IOException (_Ld^^| { S[_Hc$7U this("",0); lZq`,E_L } >h+G$&8[y 02EbmP - A\J:2a| public FileAccessI(String sName,long nPos) throws IOException s)e' }y { =u+.o<
oSavedFile = new RandomAccessFile(sName,"rw"); N-+`[8@(P< this.nPos = nPos; 6kc/ oSavedFile.seek(nPos); P!Mz5QZ+ } A)X 'We "E><:_,\ t\p_QWnF public synchronized int write(byte[] b,int nStart,int nLen) 9m:qQ1[\ { 3}}#'5D int n = -1; 9kkYD try{ GsG9;6c+u oSavedFile.write(b,nStart,nLen); `T;M=S^y*E n = nLen; ?D^l&`S } }g? 9/)z catch(IOException e) w Jb\Q { 05+uBwH e.printStackTrace (); &;)6G1X1 } _*.Wo"[%[X }+_Z|>qv m9Z 3q ; return n; =}12S:Qhj } h2Pvj37 Ef}rMkv rdL>yT/A } `B^HW8 b;[u=9ez ON$^_l/c /* &f\ng{ **SiteInfoBean.java Q\>Kd
N{ */ p:,(r{*? package NetFox; $g|/.XH% CpAdE m{ qX(sx2TK public class SiteInfoBean { 0CYm%p8! ye9-%~sjX /FZ@Z]Q0G private String sSiteURL; //Site's URL z]NN ^pIa private String sFilePath; //Saved File's Path y3
{om^ f private String sFileName; //Saved File's Name quB.A7~^= private int nSplitter; //Count of Splited Downloading File b!Q|0X.? ).TQYrs ~+{OSx<S public SiteInfoBean() (u81p {//nSplitter的缺省值为5 Tp.0@aC //default value of nSplitter is 5 r00 fvZyK this("","","",5); k0{5)Su"xr } *5k" v"NM( ZM/*cA!" n|vIo) public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) -X ~VXeg { I3QK~ V*j) sSiteURL= sURL; yz}Agc4.I sFilePath = sPath; F:.rb
Ei sFileName = sName; (gQ^jmZPG this.nSplitter = nSpiltter; DFKU?#R c|[:vin (^'TT>2B } RLN>*X Gb6t`dSzz }g:y!pk public String getSSiteURL() nz:I\yA { `<Xq@\H return sSiteURL; Lrgv:n } PsTPGK#S +(iM]L$Fw% HTK79
+ public void setSSiteURL(String value) P
agzp%m { R9o3T)9V sSiteURL = value; k:nR'TI } "q(#,,_ PW"G]G, 'v.i' 6 public String getSFilePath() zhbp"yju7 { Z
55iq return sFilePath; rxu
6 #v F } E~5r8gM,0 7pDov@K<{ L;=:OX0 public void setSFilePath(String value) ]%jlaXb { ?y82S*sb# sFilePath = value; vr<6j/ty } $E@L{5Yt U7d%*g ooY2"\o public String getSFileName() !uLW-[F, { lwhAF, '$ return sFileName; |?6r&bT } AK\X{>$a! _IJPZ'Hr Ym+k \h public void setSFileName(String value) /NCEZ@2BN, { 'NF_!D sFileName = value; r+fR^hv } 3+_? /}< `An`"$z )NJD+yQ% public int getNSplitter() 6%Ap/zvCZ> { ;
mF-y,E return nSplitter; ~TCz1UWV } &/*XA 9,=3D2x& RWtD81(oC' public void setNSplitter(int nCount) i8pM,Ppi~ { mMm_=cfv nSplitter = nCount; 7ET^,6 } +h^>?U, } O,6Upk $6w[h7 M7{w7}B0@ /* y&Sl#IQ L **Utility.java ko\VDyt, */ {aP5Mem package NetFox; )p'ZSXb {Y-<#U~iH uc9t0]o=h public class Utility { I*_@WoI* 3RG*:9 @s RRcP~ public Utility() [YG\a5QK { X[b= 25Ct L
A-H :4s{?IY)l } W]MKc&R @~%R%Vu //线程睡眠 J'9hzag public static void sleep(int nSecond) R=P=?U. { -L@4da[]i try{ c'n EbelE Thread.sleep(nSecond); <EFA^,3t% } x? 3U3\W catch(Exception e) r'xZF~}k"~ { 8enlF\I8g e.printStackTrace (); ,.[T]37 } $Kgw6 } S~L$sqt d 2sY.L //日志 JVbR5"+. public static void log(String sMsg) s<VNW { ^6j: lL System.err.println(sMsg); S0().2# } $qG;^1$ !_CBf#0 3Ob"R%Yo public static void log(int sMsg) vI3L <[W { 9}^nozR,I System.err.println(sMsg); y}5V3)P } |}s)Wo } eMyh&@7(F l&l&eOE UFBggT\ /* SV#$Cf g **TestMethod.java m
"' */ /H.w0fu&.S package NetFox; 94 58.!3 !h3$C\ A\p'\@f public class TestMethod { ]OIB;h;3 Zp@j*P :YaEMQJ^ public TestMethod() D^ZG-WR { ///xx/weblogic60b2_win.exe ;hb;%<xqT try{ e;L++D SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); =K'X:UM //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 5{nERKaPf SiteFileFetch fileFetch = new SiteFileFetch(bean); xR;>n[6 fileFetch.start(); kt?G\H!} } y%%D=" catch(Exception e){e.printStackTrace ();} {FRUB(68b ;NNYJqWd^] uYVlF@] } CT5\8C l~P%mVC3m d-/{@
public static void main(String[] args) 3cfJ(%'X { 4/UY*Us& new TestMethod(); Wno{&I63 } T
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