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/* IxN9&xa **SiteFileFetch.java *\a4wZ6<3 */ ;vR4XHl| package NetFox; 5J.bD)yrP import java.io.*; #6aW9GO import java.net.*; ?T8}K>a w>&aEv/f q s!j>x public class SiteFileFetch extends Thread { dh\'<|\K Xh"n]TK gnf8l?M SiteInfoBean siteInfoBean = null; //文件信息Bean [ZwjOi:) long[] nStartPos; //开始位置 lN
4oW3QT long[] nEndPos; //结束位置 fCn^=8KOZ FileSplitterFetch[] fileSplitterFetch; //子线程对象 y3Qsv long nFileLength; //文件长度 ha<[bu e boolean bFirst = true; //是否第一次取文件 #pow ub boolean bStop = false; //停止标志 @Ns Qd_e File tmpFile; //文件下载的临时信息 w$iX.2|9%u DataOutputStream output; //输出到文件的输出流 @Sn(lnlB &{n.]]%O. //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) j?\Qh public SiteFileFetch(SiteInfoBean bean) throws IOException vkV0On { a 7V-C siteInfoBean = bean; *!t/"b //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); CJx|?yK2 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;u
({\K if(tmpFile.exists ()) ,.8KN<A2]' { vzAax k% bFirst = false; zV37$Hb read_nPos(); :gibfk]C } /)>3Nq4Zx else Ms#M+[a { r.&Vw|*> nStartPos = new long[bean.getNSplitter()]; [#vH'y nEndPos = new long[bean.getNSplitter()]; R$<&ie6UQ } ^98~U\ar !sP{gi#= wH&!W~M
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20 h, ^ .f2bNnB~pP public void run() g}{aZ$sta { RWZSQ~ //获得文件长度 ;7V%#- //分割文件 L|7R9+ZG //实例FileSplitterFetch bl;1i@Z*M //启动FileSplitterFetch线程 Z]Cq3~l //等待子线程返回 I-*S&SiXjI try{ BhGu!Y6f if(bFirst) 6,"Q=9k4[ { OX!tsARC@ nFileLength = getFileSize(); n5NsmVW \x if(nFileLength == -1) ES7>H { -<!NXm|kvz System.err.println("File Length is not known!"); }B+C~@j } j{A y\n ( else if(nFileLength == -2) "Ac-tzhE { DV-d(@`K System.err.println("File is not access!"); %s|Ely) } }<SQ else E6ElNgL { K=k"a for(int i=0;i<nStartPos.length;i++) n
M*%o- { }2.`N%[ nStartPos = (long)(i*(nFileLength/nStartPos.length)); /nNN,hz } J=I:CD% for(int i=0;i<nEndPos.length-1;i++) Y"aJur=` { Vn}0}Jz nEndPos = nStartPos[i+1];
?P`K7 } -;m0R nEndPos[nEndPos.length-1] = nFileLength; q,|j]+9q } l<LI7Z]A } AJ`h9%B ;:g@zAV 'Aq{UGN //启动子线程 06Sceq fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; v%z=ysA for(int i=0;i<nStartPos.length;i++) NP3y+s { J @1!Oq> fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [D4SW# siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), *C*U5~Zq7: nStartPos,nEndPos,i); E
KLyma&}Y Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]MitOkX fileSplitterFetch.start(); kfY}S } 3$>1FoSk // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), )_S(UVI5 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Hk.TM2{w // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;))+>%SGCt nEndPos = " + nFileLength); l4YJ c // fileSplitterFetch[nPos.length-1].start(); { @{']Y |FZ/[9* @9RM9zK.q //等待子线程结束 {qJ1ko)$ //int count = 0; L+i=VGm0 //是否结束while循环 BG]#o|KW boolean breakWhile = false; 9-a0 :bP Zt{[*~ #'szP\ while(!bStop) ~-Qw.EdC { &Q#66ev write_nPos(); CXMLt Utility.sleep(500); h]}wp;Z breakWhile = true; #gs`#6 ,' 29] G^f> e 2oa($9 for(int i=0;i<nStartPos.length;i++) oY3;.;'bk { O;jrCB if(!fileSplitterFetch.bDownOver) aSQ#k;T[ { /%1ON9o> breakWhile = false; 2-v%`fA break; `kXs;T6& } SRDp* } p%=u#QNi if(breakWhile) )}Kf= break; Js?]$V" vr6w^&[c^ A]oV"`f //count++; p]+Pkxz]' //if(count>4) hD!7Cl Q // siteStop(); uZKr } '-XXo=>0MV s*]}QmRpr ;$wVu|& System.err.println("文件下载结束!"); Z=o2H Bm7 } d^
8ZeC# catch(Exception e){e.printStackTrace ();} Om2d.7S } ?NsW|w_ WP'!*[z ;h //获得文件长度 ;dgp+ public long getFileSize() 7[XRd9a5( { -C]5>& W int nFileLength = -1; >KhOz[Zg try{ :':s@gqr URL url = new URL(siteInfoBean.getSSiteURL()); 9qzHS~l HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); WW~sNC\3`( httpConnection.setRequestProperty("User-Agent","NetFox"); p}~JgEE ;[OH(! i<Zc"v; int responseCode=httpConnection.getResponseCode(); VjZ|$k if(responseCode>=400) 4!no~ $b { Q/0Tj]D processErrorCode(responseCode); 7;wd(8 return -2; //-2 represent access is error `|&O*` } @lr ztM A$0fKko Pu$Tk| String sHeader; ;iL#7NG-R FWgpnI\X|{ +a{1)nCXe for(int i=1;;i++) #.)0xfGW)n { TKmf+ZT*r //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -k e's //Utility.log(in.readLine()); JP[K;/ sHeader=httpConnection.getHeaderFieldKey(i); y}ev ,j if(sHeader!=null) >U27];}y { T+H!_ky`A if(sHeader.equals("Content-Length")) .4!=p*Y { `Eo.v#< nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); i$6ypuc break; Btn]}8K } ; )@~ } _F|Ek ;y% else (gWm,fI
RZ break; 1^JS Dd } 56kI
5: } [5Mr@f4I catch(IOException e){e.printStackTrace ();} ;"-&1qHN catch(Exception e){e.printStackTrace ();} ,(^*+G.i sWnLEw jasy<IqT!{ Utility.log(nFileLength); K`fuf= =$JET<( s
R/F" return nFileLength; ')<hON44EX } '!~)?C< 7n<::k\lb F0Yd@Lk$_ //保存下载信息(文件指针位置) *#+An<iT ; private void write_nPos() z[qDkL { "'?>fe\qG try{ ^9:Z7 >Z output = new DataOutputStream(new FileOutputStream(tmpFile)); 59;KQ output.writeInt(nStartPos.length); pB0 \\wR for(int i=0;i<nStartPos.length;i++) ^WWQI+pk { }y gD3:vN7 // output.writeLong(nPos); vy:Z /1q output.writeLong(fileSplitterFetch.nStartPos); PtiOz
:zV output.writeLong(fileSplitterFetch.nEndPos); >7DhTM-A } 5vnrA'BhBU output.close(); 4zFW-yy } @*KZ}i@._ catch(IOException e){e.printStackTrace ();} 5#E`=C% catch(Exception e){e.printStackTrace ();} &`2)V;t } 8$Y9ORs4 A#YrWW hf&9uHN%7m //读取保存的下载信息(文件指针位置) f
x+/C8GK private void read_nPos() 88wa7i* { SSMHoJGm try{ J)p
l|I DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); @_}P-h int nCount = input.readInt(); r$s Qf&= nStartPos = new long[nCount]; LyFN.2qw nEndPos = new long[nCount]; %:*
YO;dw' for(int i=0;i<nStartPos.length;i++) :&."ttf= { tf`^v6m%] nStartPos = input.readLong(); ds[| nEndPos = input.readLong(); qF;|bF } Se =`N input.close(); t'k$&l}+ } 3AN/
H catch(IOException e){e.printStackTrace ();} I^$fMdT catch(Exception e){e.printStackTrace ();} $*=<Yw4 } bY~pc\V:`w 'E""amIJ oe-\ozJ0 private void processErrorCode(int nErrorCode) 0oIe>r { 4
"'~NvO System.err.println("Error Code : " + nErrorCode); &6nWzF } ~oY^;/ j svH !1b ?^\|-Gr //停止文件下载 Z"fJ`-- public void siteStop() .U]-j\ { 49HZ2`Y bStop = true; pIqeXY for(int i=0;i<nStartPos.length;i++) -PR N:'T fileSplitterFetch.splitterStop(); v mk2{f,g
r3UUlR/Do w ;^ra<*<+ } 86F1.ve } >tW#/\x{ //负责部分文件的抓取 sLxc(d'A **FileSplitterFetch.java #?:l b1 */ gc$l^`+M package NetFox; O3kA;[f; hM@>q&q_ X45%e! import java.io.*; -6B4sZpzD import java.net.*; r mg}N +T Dw+ 6qnzBA7 public class FileSplitterFetch extends Thread { c9h6C Wvf
^N( C1QA)E['V String sURL; //File URL E hMNap}5" long nStartPos; //File Snippet Start Position z-)O9PV long nEndPos; //File Snippet End Position Lw>N rY(Y int nThreadID; //Thread's ID BnasI;yWb boolean bDownOver = false; //Downing is over wz%NbLy- boolean bStop = false; //Stop identical *gWwALGo5 FileAccessI fileAccessI = null; //File Access interface $-sHWYZ p0vVkdd :"/d|i`T public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException G" "ZI$` { f%}xO+.s this.sURL = sURL; -nV9:opD this.nStartPos = nStart; P/_['7 this.nEndPos = nEnd; j&qub_j"xX nThreadID = id; }*]-jWt1J\ fileAccessI = new FileAccessI(sName,nStartPos);//定位 gRcQt : } (SAs- [d]9Oa4 3h`f 6 public void run() ]~siaiN[ { 9XB 8VKu8 while(nStartPos < nEndPos && !bStop) {I't]Qj_e { nAdf=D'P |&i<bqLw: {"KMs[M try{ `<d }V2rdz URL url = new URL(sURL); R (n2A$ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &Au@S$ij httpConnection.setRequestProperty("User-Agent","NetFox"); }k.Z~1y String sProperty = "bytes="+nStartPos+"-"; ncT&Gr httpConnection.setRequestProperty("RANGE",sProperty); h<<v^+m Utility.log(sProperty); IW] rb/H aK^q_ghh[ T]~xj4 InputStream input = httpConnection.getInputStream(); pTLCWbF? //logResponseHead(httpConnection); 6.yu-xm x7 ,5 tc_ 3sC7jN byte[] b = new byte[1024]; - 1gVeT& int nRead; .(k|wX[Fu~ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) %d9uTm; { eTcd"Kd/ nStartPos += fileAccessI.write(b,0,nRead); S3Jo>jXS " //if(nThreadID == 1) @`9]F7h5W // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wN~_v-~*Q } .HABNPNg( V(!V_Ug9. uW
%# Utility.log("Thread " + nThreadID + " is over!"); A|{(/G2* bDownOver = true; ( CWtLi"z //nPos = fileAccessI.write (b,0,nRead); \:LW(&[! } $6R-5oQ catch(Exception e){e.printStackTrace ();} FGBbO\</ } H3-hcx54T } e~"U @8xk~ ;#< 0< :?1Dko^ //打印回应的头信息 8'y$M] e9n public void logResponseHead(HttpURLConnection con) 0?|<I{z2 { *.w9c for(int i=1;;i++) Z6MO^_m2 { !0<,@v" String header=con.getHeaderFieldKey(i); 44j*KsBf if(header!=null) SiN0OB //responseHeaders.put(header,httpConnection.getHeaderField(header)); ]u/sphPe Utility.log(header+" : "+con.getHeaderField(header)); b^vQpiz else )Hr`MB break; YKK*ER0 } XfIJ4ZM5 } Ar#(psU B/Ws_Kv deh*Ib:(S public void splitterStop() )J(6xy { S~G]~gt bStop = true; +D*Z_Yh6 } >9Vn.S o}p n0KO, ,zY{ } xxQ;xI0+] -jmY)(\ zX i'kB /* A?OQE9' **FileAccess.java &_8947 *//文件访问(定位,写) T6$+hUM$1 package NetFox; <(#ej4ar, import java.io.*; ~v6D#@%A |CbikE}kL X1_5KH public class FileAccessI implements Serializable{ Bk{]g=DO vtJJ#8a]
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 DzRFMYBR RandomAccessFile oSavedFile; pT6$DB# long nPos; + Vdpy( NDokSw- 9%obq/Lb public FileAccessI() throws IOException ;8 lfOMf { vW@=<aS Z this("",0); Y8t8!{ytg } ?:9"X$XR 8zq=N#x [{/jI\?v public FileAccessI(String sName,long nPos) throws IOException eS){1 {
C9)@jK% oSavedFile = new RandomAccessFile(sName,"rw"); E=O\0!F|b this.nPos = nPos; [dV L&k<P oSavedFile.seek(nPos); bpa?C } 3=V&K- 'dc#F3 1Ai^cf:S public synchronized int write(byte[] b,int nStart,int nLen) b%c9oR's^ { cso8xq|b7 int n = -1; tfWS)y7 try{ %\:Wi#w> oSavedFile.write(b,nStart,nLen); dqcL]e n = nLen; @>7%qS } WTiD[u catch(IOException e) llDkJ)\
{ jSaU?ac e.printStackTrace (); ;qV>L=a } iK;XZZ( w&.aQGR# M
D#jj3y return n; AQ^u } a$fnh3j[ #4;wjcGWw q ZZK#,Qb } )Q JUUn# (**oRwr% ]eV8b*d6 /* K:WDl;8(d **SiteInfoBean.java 'Z]w^< */ g0E'g package NetFox; I]_5}[I :rP=t , Zj
Z^_X3 public class SiteInfoBean { iU:cW=W|M\ !bP@n
{K!)Ss private String sSiteURL; //Site's URL o{[qZc_% private String sFilePath; //Saved File's Path
Wa~=bH private String sFileName; //Saved File's Name 7-V/RChBm private int nSplitter; //Count of Splited Downloading File !p/goqT~dY .jK4?}] tT._VK]o&R public SiteInfoBean() Ew$C
;&9 {//nSplitter的缺省值为5 NX&_p!_V //default value of nSplitter is 5 dQG=G%W this("","","",5); 2 ? 4!K. } \}G^\p6?M .A|@?p[ :Iz8aQ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) G KeU%x { 4 H&#q> sSiteURL= sURL; DW3G sFilePath = sPath; og>uj>H& sFileName = sName; f,Ghb~y this.nSplitter = nSpiltter; !TcJ)0
bN=P*hdf [PbOfxxgA } &6k3*dq 7PF%76TO 51.%;aY~z public String getSSiteURL() fd9k?,zM { L\iFNT}g` return sSiteURL; V G~Vs@c( } KG{St{uJ ,iwp,=h= IUct public void setSSiteURL(String value) EBmt9S { nT)vNWT= sSiteURL = value; 8JUwf } 4`=mu}Y2 `qwBn= +W+|%qM,\ public String getSFilePath() %xt^698&X { V^~:F return sFilePath; Xlt|nX~#; } >KKMcTOYY tZB<on<.) (uidNq public void setSFilePath(String value) )=-szJjXZ { q" 5(H5 sFilePath = value; #)VF3T@#' } a-J.B.A$Z/ Yz93'HDB -D~%|).' public String getSFileName() |vzl. ^"- { h@wgd~X9 return sFileName; Z5]>pJFq, } l9H!au= 7cMv/g^h@ uXl3k:_n public void setSFileName(String value) An/|+r\ { 3irl
(;v sFileName = value; '/%H3A#L } H" 7u7l k~z Iy;AZ g#E-pdY public int getNSplitter() pI<f) r { XRQ4\bMA8 return nSplitter; 1yY0dOoLG) } S`Rs82> ,9
a YKf0dh;O public void setNSplitter(int nCount) *DhiN { }W,[/)MO nSplitter = nCount; UkGCyGyZ[ } {BU;$ } w@fi{H(R ( &x['IR .6 ?U@2 /* LjHVJSC **Utility.java vY`s'%WV */ Ny)X+2Ae package NetFox; C+&l<
fM& Eu04e N seeBS/% public class Utility { ~4cC/"q$X {H'Y `+ o*hF<D$Y public Utility() Yc*;/T} { K\c#ig BTrn0 ;i+#fQO7Q } 8DaL,bi*. ^sWT:BDh //线程睡眠 o2\8OxcA public static void sleep(int nSecond) R@rBEW& { d m%8K6| try{ RViuJ; Thread.sleep(nSecond); z*)T%p } \1Em`nvOX catch(Exception e) r",GC] { sCHJ&>m5- e.printStackTrace (); NQ2E } D.XvG _ } $ L]lHji ~61v5@ //日志 ~W]TD@w public static void log(String sMsg) +=8VTCn? { l1Fc>:o{ System.err.println(sMsg);
M\Kx'N } =_u4=4 3=ymm^ VY\&8n}e( public static void log(int sMsg) SasJic2M { R{T$[$6S System.err.println(sMsg); Xla~Yg } 65^9 } _:27]K: (Ep\Z 6* !%0 *z /* Ma"]PoP **TestMethod.java #Mw8^FST */ "snw4if package NetFox; @F*%9LPv AYx{U?0p )K public class TestMethod { pyvSwD5t HyWCMK6b ?6Y?a2 | public TestMethod() q'82qY { ///xx/weblogic60b2_win.exe HHsmLo c4 try{ U4B(#2' SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 0lR5<^B //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); s->^=dy SiteFileFetch fileFetch = new SiteFileFetch(bean); MFk5K fileFetch.start(); ^gnZ+`3 } L;I]OC^J catch(Exception e){e.printStackTrace ();} IO-Ow! [ibu/W$ vRO
_Q? } wAW5
Z0D @<&m|qtMsz d/DB nZN public static void main(String[] args) o`*,|Nsq { D}X\Ca"h new TestMethod(); "#\;H$+ } w+CA1q< } n7-6-
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