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/* 7dPA>5"XD **SiteFileFetch.java nn#A-x}~;b */ \VtCkb package NetFox; JFYeOmR+l import java.io.*; %3xH<$Gq5 import java.net.*; v#-%_V>ph {zVJlJKxs *ZN"+wf\ public class SiteFileFetch extends Thread { 6K`frt f$2lq4P{ d:A+s>`$M SiteInfoBean siteInfoBean = null; //文件信息Bean ]~ec]Y long[] nStartPos; //开始位置 -|f9~(t long[] nEndPos; //结束位置 +BzKO > FileSplitterFetch[] fileSplitterFetch; //子线程对象 ? _HTOOa long nFileLength; //文件长度 W!IK>IW" boolean bFirst = true; //是否第一次取文件
diTzolY7 boolean bStop = false; //停止标志 -(:BkA File tmpFile; //文件下载的临时信息 zKT \i DataOutputStream output; //输出到文件的输出流 HO' ELiZ_q v+Mt/8 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) :FxZdE public SiteFileFetch(SiteInfoBean bean) throws IOException :M=!MgD3w { `uzRHbJ` siteInfoBean = bean; ?\c*DNM' //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); .@B\&U7 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); u;=("S{"0 if(tmpFile.exists ()) <#`<Ys3b*! { pMX7Rl
bFirst = false; @&,r|- read_nPos(); "}PmAr e } m1+DeXR_g else W9eR3q { !>>$'.nb@~ nStartPos = new long[bean.getNSplitter()]; hfEGkaV._3 nEndPos = new long[bean.getNSplitter()]; .'X$SF` } &=02.E@ [=V8 {`J7>K oxGOn(' } -Ep-v4} ?5/Sa dX+DE(y public void run() Q@d X2 { (5Cm+Sy //获得文件长度 $]Fe9E? //分割文件 jq}5(*k //实例FileSplitterFetch ={z YcVI //启动FileSplitterFetch线程 >aa-ix
& //等待子线程返回 [$] JvF try{ C
#TS if(bFirst) m4 4aKqw) { /]+t$K\cBq nFileLength = getFileSize(); 0D.YO<PU if(nFileLength == -1) (F_#LeJ| { g00XZ0@ System.err.println("File Length is not known!"); H 5sj%
v } bZtjg else if(nFileLength == -2) Mb$&~! { M%$zor System.err.println("File is not access!"); )0UQy#r } O"Xjv`j: else p&ZD1qa { :T'"%_d5 for(int i=0;i<nStartPos.length;i++)
Rl6E { lW>bXC nStartPos = (long)(i*(nFileLength/nStartPos.length)); a
nIdCOh } |@d7o]eM| for(int i=0;i<nEndPos.length-1;i++) L#NPt4Sz+ { YpNTq_S1, nEndPos = nStartPos[i+1]; IClnh1= } 8c~b7F
\ nEndPos[nEndPos.length-1] = nFileLength; ~G"6^C:x } Kq.)5%~> } RJd55+h ZEApE+m ?[VS0IBS //启动子线程 eb:u h! fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; u1>| 2D for(int i=0;i<nStartPos.length;i++) N$_Rzh"9rr { @-u/('vpB fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Jh }3AoD siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), nwV\[E nStartPos,nEndPos,i); %X#Wc:b Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [>6:xGSe9X fileSplitterFetch.start(); 'z+8;g.ekO } >i`'e~% // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }0f[x ?V siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); DmD*,[rD // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", =_v_#;h& nEndPos = " + nFileLength); T.&^1q WWA // fileSplitterFetch[nPos.length-1].start(); \9D
'7/$I, O{%y `|m #M8"b]oh6 //等待子线程结束 eR5swy& //int count = 0; 2;6p2GNSh //是否结束while循环 WU}JArX9 boolean breakWhile = false; Zx`hutCv 5$zC,g*# t|%iW%m4 while(!bStop) lfWxdi { *[_?4*F write_nPos(); i<&2Ffvq Utility.sleep(500); c: #1Aym breakWhile = true; 9~u1fk{ !@ bN yQCfn1a) for(int i=0;i<nStartPos.length;i++) @^%zh { [n66ZY#U] if(!fileSplitterFetch.bDownOver) +KD~/}C%- { 4d6F4G4U breakWhile = false; vp-)$f& break; Pk*EnA) } sFB; /*C } zf2]|]*xz if(breakWhile) \.Q"fd?a_D break; f3*u_LO *S{%+1F i}M&1E //count++; [Ma&=2h //if(count>4) i' N // siteStop(); z!t&zkAK } ##yi^;3Y #nn2odR |4wVWJ7 System.err.println("文件下载结束!"); e9N 1xB } | F:? catch(Exception e){e.printStackTrace ();} ]36 R_Dp } TQbhK^] _RjM . '<8ewU //获得文件长度 9I9J}&4 public long getFileSize() 3LX<&."z { 2<Ub[R int nFileLength = -1; :^?ZVi59j try{ ,R*ru* URL url = new URL(siteInfoBean.getSSiteURL()); f*kT7PJG HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); xOD;pRZQ
httpConnection.setRequestProperty("User-Agent","NetFox"); m"@M~~bh /[_>U{~P# ,?i#NN5p int responseCode=httpConnection.getResponseCode(); `EV[uj&1S if(responseCode>=400) k(hes3JV { ae#7*B processErrorCode(responseCode); {f)",# return -2; //-2 represent access is error q6/ o.j } }^P( p?~ ?u 9)
GJO[ t</Kel|D String sHeader; /koNcpJ 'du:Bxl`d4 (q3(bH~T) for(int i=1;;i++) I)DLnnQQ { j3z&0sc2(0 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z\O ,9 //Utility.log(in.readLine()); &|Z:8]'P sHeader=httpConnection.getHeaderFieldKey(i); T4qbyui{ if(sHeader!=null) _0^<)OSY { 6}{2W< if(sHeader.equals("Content-Length")) Jp_{PR:& { F]SexP4:A nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); --.: eFE/ break; MT;<\T } <@5# } r~TiJ?8I else hGD7/qTN break; >
NK?!!A_ } g"xLS}Al } 4d9iAN catch(IOException e){e.printStackTrace ();} -\AB!#fh catch(Exception e){e.printStackTrace ();} S1 %{/w
0qZ{:}`3 t'0r4&\ Utility.log(nFileLength); U}7$:hO"dX z`5+BL,|ND I+8m1* return nFileLength; QTK\" } F!j@b!J8 r'pFHX _W tSZmW? //保存下载信息(文件指针位置) NfS0yQPx private void write_nPos() b
3D:w{l { ]#))#-&1 try{ $U"/.Mh\ output = new DataOutputStream(new FileOutputStream(tmpFile)); b"x;i\Z0% output.writeInt(nStartPos.length); E{Y0TZ+ for(int i=0;i<nStartPos.length;i++) KdYT5VUM/ { u.8vXc // output.writeLong(nPos); NzNAhlXj3 output.writeLong(fileSplitterFetch.nStartPos); qV8;;&8r output.writeLong(fileSplitterFetch.nEndPos); M)Tv(7 } a5z.c_7r output.close(); Mz+|~'R } rm(<?w%'? catch(IOException e){e.printStackTrace ();} E^#|1Kpq catch(Exception e){e.printStackTrace ();} U:gE:t f } hG&RGN_<6+ 7Cp>i WV 3 +BPqhzf //读取保存的下载信息(文件指针位置) {Am\%v\ private void read_nPos() 6i%LM`8GEk { a%Cq?HZ7 try{ / D#vs9S DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); )Qb1$%r. int nCount = input.readInt(); @l>\vs< nStartPos = new long[nCount]; DTn=WGm) nEndPos = new long[nCount]; %!p14c*J H for(int i=0;i<nStartPos.length;i++) vy@;zrs { RAXqRP,iw nStartPos = input.readLong();
6bo,x nEndPos = input.readLong(); : gv[X } c{rX7+bN input.close(); zO9|s}J8q } H,KU!1p catch(IOException e){e.printStackTrace ();} 9"_qa q catch(Exception e){e.printStackTrace ();} OQW#BBet@ } tG{e( 6<sB dq"b_pr; private void processErrorCode(int nErrorCode) 1}KNzMHk9 { (3c,;koRR System.err.println("Error Code : " + nErrorCode); 52wq<[#tK } dSk\J[D ^?&Jq_oU :]=Y1*L\) //停止文件下载 -md2Z0^ Kc public void siteStop() W q F( { g4RkkoZ>) bStop = true; zu^?9k for(int i=0;i<nStartPos.length;i++) ?ti7iBz? fileSplitterFetch.splitterStop(); 8y~
Jn~t \QHe 0?6 E'JVf%) } 0f;L!.eP } @*%Q,$ //负责部分文件的抓取 jr"yIC_ **FileSplitterFetch.java g%1!YvS3v */ 91mXv Q:u package NetFox; #x)G2T'? (RWZ[-;) V*U"OJ% import java.io.*; DtXXfp@; import java.net.*;
Rj+}L ~" G*\wu&7! ~;wSe[ public class FileSplitterFetch extends Thread { 1K09iB 8T$:^HW gC<\1AIu String sURL; //File URL OtY.s\m y long nStartPos; //File Snippet Start Position }1z=
C< long nEndPos; //File Snippet End Position <)?H98S int nThreadID; //Thread's ID 7{8!IcR # boolean bDownOver = false; //Downing is over Xb#x^?| boolean bStop = false; //Stop identical :}UWy?F FileAccessI fileAccessI = null; //File Access interface }@!d(U* mZ ONxR6q$ 3(E"$Se,f public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ;9=9D{-4+ { )&se/x+ this.sURL = sURL; c^A3|tCi this.nStartPos = nStart; iWGgt]RJ this.nEndPos = nEnd; 4kxy7]W nThreadID = id; :NA cad fileAccessI = new FileAccessI(sName,nStartPos);//定位 o=q
N+-N } {~b]6}O %q2dpzNW
_Dwn@{[(8 public void run() scJ`oc:<J { )amdRc while(nStartPos < nEndPos && !bStop) =
fuF]yL% { 7s<v06Wo ehOF@IA_ D3;^!ln]D try{ _o' jy^ URL url = new URL(sURL); Y]&HU) u HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0*B_$E06 httpConnection.setRequestProperty("User-Agent","NetFox"); (.<Gde# String sProperty = "bytes="+nStartPos+"-"; e>uV8!u httpConnection.setRequestProperty("RANGE",sProperty); W_O,Kao Utility.log(sProperty); .fUqsq W-7yi`5 x%vt$dy*8 InputStream input = httpConnection.getInputStream(); b0m1O.&I_ //logResponseHead(httpConnection); YAC=V?U-# xO"5bj VqVP5nT'= byte[] b = new byte[1024]; h9>~?1$lz int nRead; HEht^/pJ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Fm*n>^P@Y { 0O!%NL[, nStartPos += fileAccessI.write(b,0,nRead); W{=>c/ //if(nThreadID == 1) Gv?3}8Wp // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); frc>0\ } E88_15'3D 1a/@eqF'' |~8iNcIS Utility.log("Thread " + nThreadID + " is over!"); ~Jp\'P7* bDownOver = true; rQj.W6w= //nPos = fileAccessI.write (b,0,nRead); lv&<kYWY } m#grtmyMrI catch(Exception e){e.printStackTrace ();} bveNd0hN } i\}, } H.O7Y 7 82NiVed #u|;YC //打印回应的头信息 Z;7f
D public void logResponseHead(HttpURLConnection con) W*`2lf { P[#V{%f*5 for(int i=1;;i++) SZ1+h TY7d { :g+R}TR[i String header=con.getHeaderFieldKey(i);
p,]Hs{R if(header!=null) YUM%3 //responseHeaders.put(header,httpConnection.getHeaderField(header)); 2ai \("? Utility.log(header+" : "+con.getHeaderField(header)); )-2OraUm< else xI}]q%V break; n&FN?"I/] } &P[eA u } 3AX /A+2 9 oc.`-e\? 4q~+K'Z public void splitterStop() Ct$e`H!; { PO<4rT+B bStop = true; DH)@8)C } niqi DT/ QmT]~4PqS 5<,}^4wWZ } %$!}MxUM ?G0=\U<
o, N}>`Xm5' /* /G G QO$' **FileAccess.java fo4j^,` *//文件访问(定位,写) VAsaJ`vcb package NetFox; > 9 i @W@M import java.io.*; m)=
-sD BU<A+Pe> .QRQvtd. public class FileAccessI implements Serializable{ ran
Q_\ (!W:-|[K\ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 $MB56]W8 RandomAccessFile oSavedFile; t9Pu:B6 long nPos; ?J%$;"q }yx'U 3 0K@s_C=n# public FileAccessI() throws IOException TP'EdzAT { cDm_QYQ this("",0); hgfCM } 3xp%o5K 1ncY"S/VO % ]r@vjeyd public FileAccessI(String sName,long nPos) throws IOException xo7H^!_ { oizD:| oSavedFile = new RandomAccessFile(sName,"rw"); )/Ee#)z* this.nPos = nPos; iW.8+?Xq& oSavedFile.seek(nPos); e@NS=U` < } 6b6}HO ;W'y^jp]" B~jl1g| public synchronized int write(byte[] b,int nStart,int nLen) l?pZdAE { ,DXNq`24 int n = -1; cqRIi~` try{ &N[~+" oSavedFile.write(b,nStart,nLen); 2}b1PMpZG n = nLen; >m44U 9 } ;]KGRT catch(IOException e) O}Fp\" { 1EyM,$On e.printStackTrace (); $X9-0- } 4g$mz:vo =HQH;c" aq oT return n; `5=0f}E } e~i
?E g5;
W6QX Ex&f}/F } %kKe"$)0 &owBmpz _udH(NC /* !3kyPoq+ **SiteInfoBean.java fS w00F{T */ ?h<I:[oZ package NetFox; VkRvmKYl x6.an_W6 s'tmak-}| public class SiteInfoBean { vz#rbBY*; )?K3nr df&d+jY private String sSiteURL; //Site's URL :G9.}VrU private String sFilePath; //Saved File's Path T&tCXi private String sFileName; //Saved File's Name Tm.(gK private int nSplitter; //Count of Splited Downloading File .B6$U>>NS^ 4%KNHeaN k$i76r public SiteInfoBean() |9?67- {//nSplitter的缺省值为5 ,CA,7Mu: //default value of nSplitter is 5 5A>W;Q\4 this("","","",5); "m3u}!`3 } Y"K7$+5#\ X%h1r`h& [6FCbzS_W public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) u;F++$= { &g\D-At sSiteURL= sURL; =L#tSa=M" sFilePath = sPath; <DvpqlT sFileName = sName; s~Ni\SF this.nSplitter = nSpiltter; f)({;,q uV#/Lgw{M 8]YFlW9 } 7M<7^)9 di
"rvw;R : N> 5{ public String getSSiteURL() V+nqQ~pJ& { dScit!T" return sSiteURL; Io|NL6[ } B=(m;A#G lw\OsB$ ;E,%\< public void setSSiteURL(String value) H/|Mq#K { "e&S*8QhM sSiteURL = value; k =ru)
_$2 } z%}^9 (fUXJ$ cZe,l1$ public String getSFilePath() :y"Zc1_E { j\P47q'v# return sFilePath; w3:Y]F.ot } _WVeb} #c5G"^)z NFDi2L>Ba public void setSFilePath(String value) Y`uL4)hR5 { A%Pjg1(uX sFilePath = value; &\F`M|c } g|9'Lk R.Ao%VT 8*V3g_z public String getSFileName() Co4QWyt: { _ncqd,&z return sFileName; '&I.w p`^ } t9Ht
54 |dsd5Vdr d(jd{L4d public void setSFileName(String value) w-Y-;*S { ZL:nohB sFileName = value; +Tf ,2?O } :tu6'X\k 63#Sf$p{v &y[Od{= public int getNSplitter() j="{^b { 1[
ME/r return nSplitter; z:u e]7(. } HpiP"Sl C:"Al- y[UTuFv~Q public void setNSplitter(int nCount) npkE[JE: { yEJ}!/ nSplitter = nCount; EEEYNu/4/ } <{Wsh#7 }. } \S{ise/U 9fp1*d [[}KCND /* QmvhmsDL **Utility.java ArDkJ`DE */ vrXUS9i. package NetFox; %G1kkcdH< B<SuNbR )[|`-M~u public class Utility { Smzy EMT g)u
~GA*= iq)4/3"6 public Utility() y/Fv4<X { 6J9^:gXW~ f}PT3 ng(STvSh: } (]n^_G#-$ 8_US.52V //线程睡眠 dE=4tqv-r public static void sleep(int nSecond) ^31X-}tv { Q&}`( ]k try{ -&I)3 Thread.sleep(nSecond); -/*-e
/+b } ]mYT!(} catch(Exception e) v)mO"\ { ZW{pO:- e.printStackTrace (); ^a#Vp } _5 Zhv-7 } p}$VBl$' BUqe~E|I //日志 ~mP#V public static void log(String sMsg) W-ErzX { 5(R ./
System.err.println(sMsg); 1K.i>]}> } Q%o:*(x[O *~~ >? PTfTT_t public static void log(int sMsg) o(Yj[:+m { T$RVz
System.err.println(sMsg); -$WU-7` } 59A@~;.F } -\O%f)R )F
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'^ B~K@o.% /* 1|_jV7`Mz **TestMethod.java jHBzZ!< */ xPoI+, package NetFox; $Zf hQ5bat :_E=&4&g =:OS"qD3l public class TestMethod { s4uZ; V+j58Wuf s{\USD6 public TestMethod() lArYlR} { ///xx/weblogic60b2_win.exe eT* )r~ try{ @}k5rcQ*/ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); =oz$uD}? //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); tfW*(oU SiteFileFetch fileFetch = new SiteFileFetch(bean); $Tci_(V=F fileFetch.start(); ?UCK } T<1*R>el catch(Exception e){e.printStackTrace ();} BM9J/24 y,e#e` is@8x!c } nA$zp 1;Bgt v$ w9h`8pt public static void main(String[] args) L6S!?t.{Yv { vDl6TKXcu new TestMethod();
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