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/* qj7}]T_ **SiteFileFetch.java 5%_aN_1?ef */ 22T\-g{ package NetFox; #n7F7X import java.io.*; zA>LrtyK(= import java.net.*; 2zV{I* =*5< w `SH14A* public class SiteFileFetch extends Thread { &o;d ? K ,d ;!+-fn4C SiteInfoBean siteInfoBean = null; //文件信息Bean %lnVzGP long[] nStartPos; //开始位置 lR>p long[] nEndPos; //结束位置 EKD?j FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ob&m&2s, long nFileLength; //文件长度 KB"N',kG boolean bFirst = true; //是否第一次取文件 9Q.@RO$%C boolean bStop = false; //停止标志 ;*G';VuT File tmpFile; //文件下载的临时信息 ;/h&40& DataOutputStream output; //输出到文件的输出流 &RHZ7T '8yC wk //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) j S4\; public SiteFileFetch(SiteInfoBean bean) throws IOException /V{1Zw= { bess
b>= siteInfoBean = bean; -d. i4X3j //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); O**~ Tj tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }G)2HTaZ if(tmpFile.exists ()) U *:ju+)k { oj(st{, bFirst = false; ;u-[%(00S read_nPos(); 2<T/N } (e_z*o)\T else [v+5|twxpU { A>ve|us$ nStartPos = new long[bean.getNSplitter()]; w:pPd;nz0Y nEndPos = new long[bean.getNSplitter()]; 6U0BP } A+MG?k>yg <t&Qa~mA @__m>8wn 9/`3=r@ } 9SBTeJ$RZ &qzy?/i8 Y?qUO2 public void run() @#p6C { jL7r1pu5 //获得文件长度 D#D55X^6* //分割文件 mKqXB\< //实例FileSplitterFetch ^;9<7h[l //启动FileSplitterFetch线程 %L|xmx!c //等待子线程返回 95E# try{ R/xT.EQ(N if(bFirst) 2 :4o`o { tVe =c nFileLength = getFileSize(); y`i?Qo3 if(nFileLength == -1) D<`M<:nq { drxCjuz" System.err.println("File Length is not known!"); 25Ro
)5 } k. NJ+ else if(nFileLength == -2) bzr QQQ { Hr7?#ZX;e System.err.println("File is not access!"); kTcW=AXu } |[0Ijm2 else 6V"uovN2 { T/.U Mw for(int i=0;i<nStartPos.length;i++) XtQwLH+F
{ "D'rsEh nStartPos = (long)(i*(nFileLength/nStartPos.length)); qg/FI#r } Dkx}}E:< for(int i=0;i<nEndPos.length-1;i++) BCuoFw) { "L;@qCfhO nEndPos = nStartPos[i+1]; po(pi| } $NCR
V:J nEndPos[nEndPos.length-1] = nFileLength; 'd|!Hr<2 } BaWU[* } *8_Dn}u?Jx 2+/r~LwbK dW22v! //启动子线程 >& 4) : fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Eyz.^)r for(int i=0;i<nStartPos.length;i++) RU=\eD { nLOK1@,4 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), X`3_ yeQc siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), gnkeJ}K nStartPos,nEndPos,i); /i dI- Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); eso-{W,D fileSplitterFetch.start(); ($!uBF-b } 7n o6
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $e2+O\.> siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); d!46`b$rd // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", I o"3wL)2 nEndPos = " + nFileLength); d>NO}MR // fileSplitterFetch[nPos.length-1].start(); "iGQ1#6|d sv&^sARN y@,PTF //等待子线程结束 q7rb3d //int count = 0; en/ h`h]h //是否结束while循环 lo1bj *Y2 boolean breakWhile = false; \#]C !JQ pY[b[ezb YR? E
z<p while(!bStop) |h%HUau { eXD~L&s[ write_nPos(); 7W*a+^ Utility.sleep(500); XjCx`bX^< breakWhile = true; 3~7!=s\v EJ>rW(s @/?i|!6 for(int i=0;i<nStartPos.length;i++) b`$qKO { B'Jf&v if(!fileSplitterFetch.bDownOver) {* :^K\- { SSCs96 breakWhile = false; 0g6sGz= break; OjAdY\
]1 } 2@lGY_O!m } !*L)v if(breakWhile) $U.| break; w;{Q)_A OF={k[ pdR\Ne0P* //count++; G[JWG //if(count>4) N UvVhy]{ // siteStop(); #rF`Hk: } _WvVF*Q"k M)!"R [V $./aKJ1B System.err.println("文件下载结束!"); -.y1]4 } [|YvVA catch(Exception e){e.printStackTrace ();} SD :D8"8 } Y#Q!mbp [OTn>/W' cD6 ^7QF //获得文件长度 W7'<Jom|? public long getFileSize() [*5]NNB { 8B &EH+ int nFileLength = -1; ^"D^D`$@ try{
6WT3-@d URL url = new URL(siteInfoBean.getSSiteURL()); TE$6=; HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); OJ"./*H httpConnection.setRequestProperty("User-Agent","NetFox"); e ><0crb 7l$
u.[ :N _]*> int responseCode=httpConnection.getResponseCode(); >qOG^{&x if(responseCode>=400) Y2XxfZj { AEaN7[PQx| processErrorCode(responseCode); |nWEuKHy return -2; //-2 represent access is error qPD(D{,f$ } qbD
7\% yyljyE A.("jb@I String sHeader; ye=4<b_ A-:k4] {%P O1c:X7lHc for(int i=1;;i++) HV)aVkr/& { I/O/*^T //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); =f
y|Dm74 //Utility.log(in.readLine()); &PRoT#, sHeader=httpConnection.getHeaderFieldKey(i); lH`TF_ if(sHeader!=null) h2T\%V_j { J<+f7L if(sHeader.equals("Content-Length")) /{`"X_.o { !L9OJ1F nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); s5{=lP break; {pH# zs4Y } *E/ Mf
} ~WTk X(\ else &K60n6q{aQ break; _qf39fM;\ } B7[d^Y60B } wpYk`Lr catch(IOException e){e.printStackTrace ();} -JF^`hBD- catch(Exception e){e.printStackTrace ();}
5N$XY@ aIFlNS,y 5v)bs\x6 Utility.log(nFileLength); o
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return nFileLength; nOL.% } r9&m^,U _3@5@1[s YmaS,Q- //保存下载信息(文件指针位置) Nz.X$zUmY private void write_nPos() Rr%x;- { m!Z<\2OP try{ O 1z0dHa output = new DataOutputStream(new FileOutputStream(tmpFile)); =xIZJ8e output.writeInt(nStartPos.length); z/xPI)R[ for(int i=0;i<nStartPos.length;i++) j;y~vX b { xmcZN3 ){+ // output.writeLong(nPos); vio>P-2Eho output.writeLong(fileSplitterFetch.nStartPos); Y2QX< output.writeLong(fileSplitterFetch.nEndPos); zaHZ5%{LQD } b{
x lW }S output.close(); s+lBai*# } ebI2gEu;a catch(IOException e){e.printStackTrace ();} >*h+N?
m catch(Exception e){e.printStackTrace ();} `8W HVC$ } Rv9jLH 9D1WUUa 30uPDDvar //读取保存的下载信息(文件指针位置)
#O}}pF private void read_nPos() 6 Ln~b <I { T9Q3I try{ \\<=J[R.M DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); &Q~W{. int nCount = input.readInt(); D?1fY!C:r nStartPos = new long[nCount]; w'(/dr nEndPos = new long[nCount]; Xj/z), for(int i=0;i<nStartPos.length;i++) *"8Ls0! { n_km]~ nStartPos = input.readLong(); ? /z[Jx. nEndPos = input.readLong(); vHpw?(] } xt5/`C input.close(); `T[@ - } i>YQ<A1 catch(IOException e){e.printStackTrace ();} K#wA ; catch(Exception e){e.printStackTrace ();} }psRgF } e9h@G# H"l4b4)N\ K'r;#I|"J private void processErrorCode(int nErrorCode) WqNXE)' { %/y=_G System.err.println("Error Code : " + nErrorCode); #mu L-V } (~^fx\-S 2uE<mjCt-r f(m,! //停止文件下载 43AzNXWF8 public void siteStop() v{a%TA9- { Q!1 ;xw~ bStop = true; Z{0BH{23 for(int i=0;i<nStartPos.length;i++) f+ceL'fr fileSplitterFetch.splitterStop(); 8-nf4=ll c("|xe oM~y8O } \s5Uvws } |g 3:+& //负责部分文件的抓取 E:pk'G0bZ **FileSplitterFetch.java
:9UgERjra */ #%p44%W package NetFox; c,2& -T} <(lA
CH =WY'n
l' import java.io.*; H/O.h@E4X import java.net.*; Kk8}m; 8~o']B;lJ 7a'yO+7-) public class FileSplitterFetch extends Thread { `sYFQ+D#O M@A3+v%K F$?Ab\#B String sURL; //File URL ;yt6Yp.6e long nStartPos; //File Snippet Start Position w'H'o!*/ long nEndPos; //File Snippet End Position l:V
R8g[ int nThreadID; //Thread's ID 0!|d .jZI boolean bDownOver = false; //Downing is over 0
jth}\9 boolean bStop = false; //Stop identical 46 A sD FileAccessI fileAccessI = null; //File Access interface SraZxuPg> OT])t<TF6 +{I_%SsG public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException `uMEK>b { Y7}>yC/GY this.sURL = sURL; s7 "xDDV this.nStartPos = nStart; x"12$ 79= this.nEndPos = nEnd; Wm}c-GD nThreadID = id; V^2_]VFj fileAccessI = new FileAccessI(sName,nStartPos);//定位 'K,\ } t_3j_` 1(?4*v@B ^&eF916H public void run() ,@ 8+%KqG { SN{+ P k while(nStartPos < nEndPos && !bStop) wGArR7r { LlQsc{Ddf 6L<:>55 3^o(\=-JX try{ k6Kc{kY URL url = new URL(sURL); =:WZV8@% HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8v"rM
>[ httpConnection.setRequestProperty("User-Agent","NetFox"); ebk>e* String sProperty = "bytes="+nStartPos+"-"; EU?qLj': httpConnection.setRequestProperty("RANGE",sProperty); {[oNUzcd Utility.log(sProperty); qk (Eyp \3 SY2g8+ ?gE=hh InputStream input = httpConnection.getInputStream(); RPz[3y //logResponseHead(httpConnection); ~`OX}h/Z
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&4 e%\^V\L byte[] b = new byte[1024]; Pp8S\%z~h int nRead; U6]#RxH while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ;t&q|}x" { l76=6Vtb nStartPos += fileAccessI.write(b,0,nRead); Xsq@E#@S //if(nThreadID == 1) F(G..XJQ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 0WUBj:@g } k)p`x"To B@,r8)D ?*fa5=ql Utility.log("Thread " + nThreadID + " is over!"); Ww]$zd-bo bDownOver = true; ;'"'|} xn //nPos = fileAccessI.write (b,0,nRead); vhrf 89-q } <>] DcA catch(Exception e){e.printStackTrace ();} uk):z$x } HbKE;N } +MoUh'/u hhTtxC<: E=s h^Q(A //打印回应的头信息 TjW!-s?S public void logResponseHead(HttpURLConnection con) `fBQ?[05. { 5PeS/%uT@ for(int i=1;;i++) s.2f'i+ { 2@|`Ugjptl String header=con.getHeaderFieldKey(i); MpCPY"WLL if(header!=null) nQF&^1n //responseHeaders.put(header,httpConnection.getHeaderField(header)); Qd}n4KF\ Utility.log(header+" : "+con.getHeaderField(header)); @Kpm&vd( else ;vH2r~ break; 0]DOiA } 8?yIixhw } .hT>a< O =Z}DGa+ .a%6A#<X public void splitterStop() *[Hp&6f { m%HT)`>bg bStop = true; p*g Fr hm } 02J/=AC5 t;8)M$
p DzZF*ylQ5P } uF7vba$ t7Q$ Y)rK'OY' /*
R3>q ] **FileAccess.java }LUvh *//文件访问(定位,写) F&Md+2 package NetFox; xIM,0xM2 import java.io.*; EmNVQ1w Za|7gt];l tr0b#4 public class FileAccessI implements Serializable{ x@-K 5aQ)qUgAW //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Ua1&eCZi RandomAccessFile oSavedFile; 'P.y? long nPos; -)V0D,r$[ BZeEZ2" pzF_g-B public FileAccessI() throws IOException T\6Qr$t { X`8<;l this("",0); A(y6]E! } 1-kuK<KR <5zR-UA> oC&}lp)q public FileAccessI(String sName,long nPos) throws IOException omfX2Oa2 { A*h8 o9M oSavedFile = new RandomAccessFile(sName,"rw"); >.?yz this.nPos = nPos; r_7%|T8 oSavedFile.seek(nPos); vXJs.)D7 } !wYN",R- ?JuJu1 CsR[@&n' public synchronized int write(byte[] b,int nStart,int nLen) nW=6nCyvo { x;mw?B[ int n = -1; 9{pT)(Wnb try{ 8lF9LZ8 oSavedFile.write(b,nStart,nLen); }QE.|.fA1 n = nLen; ;}B=g/C } m$8siF{<q catch(IOException e) #qd!_oN { >tg)F|@ e.printStackTrace (); _H| )g*]t } `m 5\ Es=G' au [@K'}\U^+ return n; H1N@E}> | } (kL"*y/"p 4
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wtZ@ } (B#FLoK R@\fqNq _S_,rTf& /* F8%^Ed~@ **SiteInfoBean.java xF_u:}7` */ IOHWb&N6 package NetFox; XpAJP++ z_c-1iXCW $WYt`U;*lj public class SiteInfoBean { ekx(i
QA ]}`t~#Irz -jjB2xP private String sSiteURL; //Site's URL 8:Hh;nl private String sFilePath; //Saved File's Path 5OdsT-y private String sFileName; //Saved File's Name i4YskhT private int nSplitter; //Count of Splited Downloading File ruaZ(R[ b: (+d"S H{cOkuy public SiteInfoBean() FK BRJ5O {//nSplitter的缺省值为5 p\zqZ=s //default value of nSplitter is 5 9/"&6, this("","","",5); A1zRzg4 I } eC/{c1C 6*,55,y
pj %]t public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) q/?*|4I { BB}WfA sSiteURL= sURL; @3n!5XM{EE sFilePath = sPath; nOC\ =<Nsg sFileName = sName; V lZ+x)E this.nSplitter = nSpiltter; B7Ket8<J 5bb#{?2i 5Sl"1HL } -zECxHjx CH7a4qL` AMrYT+1 public String getSSiteURL() PTHxvml { cc${[yj) return sSiteURL; \d:Q%S } .#y#u={{l C
b'| \BBs;z[/ public void setSSiteURL(String value) kQI'kL8> { %@QxU-k_ sSiteURL = value; QFTiE1mGH } iv`G}.Bo }w)}=WmD a;$V;3C{b& public String getSFilePath() 2IJniS=[> { Xau%v5r return sFilePath; o?]Q&,tO } Q`i@['?p
:%sG'_d oDS7do public void setSFilePath(String value) k3&68+ { A8ViJ sFilePath = value; +At[[ } *6JA&zj0B 3MX#}_7A pg5W`4-F public String getSFileName() {]Mwuqn { uP4yJ/] return sFileName; a@g
<cl7a, } 7
\xCNOKh .XpuD,^;@ Xg.Lo2s public void setSFileName(String value) W.
d',4) { [fCnq sFileName = value; mBIksts5h } P^o@x,V!& U/FysN_N! 54{E&QvL8o public int getNSplitter() UR'v;V&Cb\ { koB'Zp/FaY return nSplitter; 9T;>gm } dLqBu~* t=lDN'\P w[a(I}x public void setNSplitter(int nCount) 5_A*IC] { N/>:})dav nSplitter = nCount; (x%
4* } AQ
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27Cjw /* Bor_(eL^ **Utility.java %,$xmoj9O] */ = y^5PjN package NetFox; C}9GrIi UZsvYy? F<h+d917 public class Utility { AyUw ;E{jn4B' xA^E+f:W_ public Utility() 7oZ Pb { /0>'ZzjV, C-ORI}o dU_;2d$ } FD!8o 6yYjZ< //线程睡眠 >/RFff]Fh0 public static void sleep(int nSecond) E
el* P M { M8:i ] try{ D,*|:i Thread.sleep(nSecond); [$K8y&\L } zT}vaU6 catch(Exception e) 1mHS -oI9J { }.s%J\ckx e.printStackTrace (); @gqZiFM) } W4.w } NsS;d^%I h}nS&. //日志 \{Q_\s&) public static void log(String sMsg) Z[&FIG%tV { P )oNNY6} System.err.println(sMsg); #Rfcp! } #|+4 `Gf^ tf54EIy5Y Q"NZE public static void log(int sMsg) f.j<VKF} { A
?tna6W: System.err.println(sMsg); * BrGh } !\VEUF,K? } s%rmfIp" JXRU9`3)A Y6Y"fb%K /* C(h<s
e? **TestMethod.java i@D4bd9lR */ #?\(l% package NetFox; 7MZH'nO |_g7k2oLY T9J&^I public class TestMethod { E;`^`T40 lq.]@zlSO k(7Q\JKE public TestMethod() H_XspiB@ { ///xx/weblogic60b2_win.exe %H{;wVjK try{ }oiNgs/N SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); I.Catm2 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); z3 ^_C`(F SiteFileFetch fileFetch = new SiteFileFetch(bean); YH+(N fileFetch.start(); Uu*iL< ` } &Qv HjjQ?u catch(Exception e){e.printStackTrace ();} (#6Fg|f4Y %${$P+a`D /Q)I5sL@E } `<~=6H ~}{_/8'5 PP\ bDEPy public static void main(String[] args) wA7\K~fHV { # X1a v new TestMethod(); 7.
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