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/* 9O+><x[i **SiteFileFetch.java De(\<H# */ ?(^HjRUY package NetFox; j5EZJ` import java.io.*; ~$8t/c import java.net.*; lc71Pp> v3i]z9` E .kjYIH8 public class SiteFileFetch extends Thread { uWYI p\NN xjOj1Hv MxY~(TVPK SiteInfoBean siteInfoBean = null; //文件信息Bean '$3]U5KOwK long[] nStartPos; //开始位置 exqFwmhh long[] nEndPos; //结束位置 %Hk9.1hn5 FileSplitterFetch[] fileSplitterFetch; //子线程对象 YYz,sR'%|} long nFileLength; //文件长度 'xUyGj: boolean bFirst = true; //是否第一次取文件 KKd Sh1 boolean bStop = false; //停止标志 )-_]y|/D:r File tmpFile; //文件下载的临时信息 OeuM9c{ DataOutputStream output; //输出到文件的输出流 ]S6`",+)<f dT%$"sj5 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -];/ *nl public SiteFileFetch(SiteInfoBean bean) throws IOException &_^t$To { 4X@
<PX5 siteInfoBean = bean; 0z2A!a p //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); p. eq
N tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Y?(kE` R if(tmpFile.exists ()) K{}U[@_tS { #-_';Er\ bFirst = false; U9[
&ci read_nPos(); k|$08EK $ } S`Jo^!VJ4 else :)UF# { TU-4+o%; nStartPos = new long[bean.getNSplitter()]; I]"wT2@T;7 nEndPos = new long[bean.getNSplitter()]; s:y~vd(Vi } QQso<.d& v>FsP$p4yE "eq{_4dL :@:i*2= } JM-spi o eC^UL5>% p`jkyi public void run() bqHR~4 #IR { 2g elmQnc //获得文件长度 .a%D:4GYR //分割文件 ,Jy@n]x //实例FileSplitterFetch 0^41dfdE //启动FileSplitterFetch线程
G[}$s7@k //等待子线程返回 8,Jjv* try{ Une,Y4{u if(bFirst) T[}A7a6g_ { X|}yp| nFileLength = getFileSize(); ]xlV;m if(nFileLength == -1) 4!pMZ<$3 { h01 HX System.err.println("File Length is not known!"); Fb&Xy{kt1 } N02X*NC else if(nFileLength == -2) 0j^QY6 { GJ:65)KU System.err.println("File is not access!"); ^tS{a *Yn } 2sj[hI else I%]~]a { Q ke8BRBn for(int i=0;i<nStartPos.length;i++) Bb5|+bP { t6GL/M4 nStartPos = (long)(i*(nFileLength/nStartPos.length)); *C81DQ } 9 )1 8 for(int i=0;i<nEndPos.length-1;i++) =IQ+9Fl2 { q6h'=By nEndPos = nStartPos[i+1]; "@1e0`n
Q } P|>
f O' nEndPos[nEndPos.length-1] = nFileLength; B{UL(6\B } sb Wn1 T
U } v71j1Q}6 4K_rL{s0U AJ_''%$I3: //启动子线程 F?UI8 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Arg604V3 for(int i=0;i<nStartPos.length;i++) ~)\9f 1O{^ { zn| S3c fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gnjh=anVX1 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), b&AGVWhh nStartPos,nEndPos,i); `mar-r_m Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); J#h2~Hz! fileSplitterFetch.start(); = GN1l[X } 3/rEXKS // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), xbbQ)sH&m siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); y0!-].5UH // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", d5zv8?|X+ nEndPos = " + nFileLength); 4e6x1`Y{xB // fileSplitterFetch[nPos.length-1].start(); C-i9F%.. KxyD{W1 oy8L{8? //等待子线程结束 X$aN:!1 //int count = 0; F't4Q //是否结束while循环 Wpgp YcPS boolean breakWhile = false; HeV6= K(&I8vAp KIY/nu
while(!bStop) tPv3nh { en6Kdqe write_nPos(); 5Lmhip Utility.sleep(500); }V20~ hi breakWhile = true; qH#?, sK ^ ;DQ{6( >
-P UY for(int i=0;i<nStartPos.length;i++) asDk@Gcu { ;WydXQ}Q^ if(!fileSplitterFetch.bDownOver) eIZ7uSl { ^HJvT)e4 breakWhile = false; p:*)rE break; }e/#dMEi } v5 |XyN" } N_3$B= if(breakWhile) mGss9eZa break; Ri[ v(Zf 'o D31\@I Mnj\t3: //count++; ]i$<<u //if(count>4) $ z4JUr!m // siteStop(); #%Z 0! } ( (.b& O!uZykdX4! x;Qs_"t];3 System.err.println("文件下载结束!"); I},]Y~Y3 } S&yKi catch(Exception e){e.printStackTrace ();} Pu|PIdu!08 } g8=j{]~C +JyD W%a:L OoW,mmthj> //获得文件长度 47S1mxur public long getFileSize() |hx"yy'ux { NOC8h\s}( int nFileLength = -1; {RG4 m{#9 try{ CcGE4BB URL url = new URL(siteInfoBean.getSSiteURL()); sBN"eHg HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); HPGIz!o httpConnection.setRequestProperty("User-Agent","NetFox"); V/p+Xv(Zt c(@(j8@S E#?Bn5-uBs int responseCode=httpConnection.getResponseCode(); xqZZ(jZ if(responseCode>=400) &c?q#-^)\+ { [-ONs processErrorCode(responseCode); Q7
4Q|r7 return -2; //-2 represent access is error /Bt+Ov3k } pr;n~E 'kq r6JQRSakR m`;dFL7"E String sHeader; rI'kGqU ^bD)Tg5K =nVEdRU for(int i=1;;i++) N7Kg52| { /$EX-!ie //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); L<7KmN4VX //Utility.log(in.readLine()); -0I]Sm;$ sHeader=httpConnection.getHeaderFieldKey(i);
Rcn6puZt if(sHeader!=null) g6 AEMer { J Wh5gOXd if(sHeader.equals("Content-Length")) +#;t.&\80N { Z=[qaJ{] nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); VnjhEEM! break; k},@2#W] } QPD[uJ(I } `6No6.\J else _nUvDdEs, break; [Sj _= } `@_jDo } %qycxEVP catch(IOException e){e.printStackTrace ();} K~chOX catch(Exception e){e.printStackTrace ();} a^#\"c z9}WP$W O:%,.??<% Utility.log(nFileLength); q0m>NA
MvCB|N"qy xYLTz8g= return nFileLength; zfsGf'U } BN_I#8r nB|m!fi< GLBzlZ? //保存下载信息(文件指针位置) {uCXF~v private void write_nPos() 6"o,)e/z { T)Uhp try{ ,(;T V_@$ output = new DataOutputStream(new FileOutputStream(tmpFile)); r(ZMZ^ output.writeInt(nStartPos.length); cv=H6j]h| for(int i=0;i<nStartPos.length;i++) ?hFG+`"W { +A;AX.mr // output.writeLong(nPos); 6_=t~9sY output.writeLong(fileSplitterFetch.nStartPos); B4#XQ- output.writeLong(fileSplitterFetch.nEndPos); P&snIJ } ov
'g'1} output.close(); >h
Rq } GG=R!+p2 catch(IOException e){e.printStackTrace ();} X/8TRiTFv catch(Exception e){e.printStackTrace ();} Fkvf[!Ci } =Hd+KvA >)j`Q1Qc\ rOo|.4w //读取保存的下载信息(文件指针位置) s7Z+--I)L private void read_nPos() _{C
=d3 { {W' 9k try{ d71|(`& DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); `Eg~;E: int nCount = input.readInt(); } %bP9 nStartPos = new long[nCount]; _SQQS67fu" nEndPos = new long[nCount]; mS9ITe
M for(int i=0;i<nStartPos.length;i++) Z,"f2UJ { i)1013b nStartPos = input.readLong(); -V F*h.' nEndPos = input.readLong(); gebDNl\Y2 } EyDH-}Y input.close(); k .#I ;7 } j /)A<j$ catch(IOException e){e.printStackTrace ();} olxnQYFo catch(Exception e){e.printStackTrace ();} FoW|BGA~ } 4(D1/8 U)JwoO ])9|j private void processErrorCode(int nErrorCode) Q/%]%d { 0s72BcP System.err.println("Error Code : " + nErrorCode); WNK)IC~c } @c-| Sl 0F-%C>&g }Y&|v q //停止文件下载 PNB E public void siteStop() gWGh:.*T { -}CMNh bStop = true; K[^BRn for(int i=0;i<nStartPos.length;i++) 8#ZF<BY fileSplitterFetch.splitterStop(); `gX$N1( V6!1(| PLueH/gC . }
'E)g )@^ } i`7(5L~` //负责部分文件的抓取 ?m\?
# **FileSplitterFetch.java 08qM?{zo^ */ -%ftPfm package NetFox; F T$x#> 9YvK<i&I <i ";5+ import java.io.*; pmuT7*<19 import java.net.*; DmiZ"A =`OnFdI Ca}V5O public class FileSplitterFetch extends Thread { l_i&8*=Px ^US ol/ >* h3u7t String sURL; //File URL '&!:5R5 9 long nStartPos; //File Snippet Start Position c2Yrg@) [ long nEndPos; //File Snippet End Position $)Ty@@7C int nThreadID; //Thread's ID -+z8bZ boolean bDownOver = false; //Downing is over miB+'n"zS boolean bStop = false; //Stop identical uhvn1" FileAccessI fileAccessI = null; //File Access interface o#QS: '| @ruWnwb y41~ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException h1+y.4
{ NRMEZ\*L this.sURL = sURL; +GL[uxe" this.nStartPos = nStart; Ya29t98Pk this.nEndPos = nEnd; Jy
P$'v~ nThreadID = id; 0gsRBy fileAccessI = new FileAccessI(sName,nStartPos);//定位 Nz%Yi?AF } oR~s
\Gt $6~t|[7:%Y P{2j31u` public void run() i'3)5 { b6d}<b9# while(nStartPos < nEndPos && !bStop) 7qLB 9r { I#:Dk?"O2 S#b)RpY Y-.aSc53 try{ XaH; URL url = new URL(sURL); 4O7
{a HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); YM&i httpConnection.setRequestProperty("User-Agent","NetFox"); [{.9#cQ" String sProperty = "bytes="+nStartPos+"-"; f>[{1M]n\ httpConnection.setRequestProperty("RANGE",sProperty); qkA8q@Y4| Utility.log(sProperty); ddwokXx
( Lt_A& |e91KmiqJ InputStream input = httpConnection.getInputStream(); Ge ?Q)N //logResponseHead(httpConnection); |F49<7XB[~ fS]Z`U" l9naqb:iP byte[] b = new byte[1024]; M:t"is int nRead; er.;qV'Wz6 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Q#lFt,.y { Huc|HL#C nStartPos += fileAccessI.write(b,0,nRead); MogIQ //if(nThreadID == 1) KtcuGI/A // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3oMa } b!T-{Ns6 &*; Z(ul&9 S{nBQB< Utility.log("Thread " + nThreadID + " is over!"); Qov*xRO6 bDownOver = true; 4k)0OQeW6 //nPos = fileAccessI.write (b,0,nRead); l{Xy %8 } g(l:>=g]? catch(Exception e){e.printStackTrace ();} T U^s!Tj } P\%aJ'f~ } gR${S|Z#u4 vT#m 8Kg GI%9Tif //打印回应的头信息 7X8n|NZRH7 public void logResponseHead(HttpURLConnection con) M;sT+Z{ { J@qwz[d i for(int i=1;;i++) Xb.#
=R { (!% w String header=con.getHeaderFieldKey(i); LY2QKjgP if(header!=null) lz4M)pL^ //responseHeaders.put(header,httpConnection.getHeaderField(header)); #ds@!u+& Utility.log(header+" : "+con.getHeaderField(header)); 7 b8pWM else >M7(<V break; SN;_.46k } %=)%$n3=-M } kudXwj 87rHW@\]( |XJ|vQGU public void splitterStop() 2XrYm"6w { zKQXmyO bStop = true; c@lH } *0z'!m12 Ebp=du DpIk$X } a6'T]DW0W vk<4P;A(G cHon' tS /* $s,(-C **FileAccess.java m}]\ ^$d *//文件访问(定位,写) ~b})=7 n. package NetFox; ztC>*SX import java.io.*; \R,8xID_t [_HOD^ cG!dMab( public class FileAccessI implements Serializable{ c3N,P<# ?&bB?mg\ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Wb;D9Z RandomAccessFile oSavedFile; ASa)xf9 long nPos; vAzSpiv- Z`>m @DK`#, public FileAccessI() throws IOException `%$+rbo~ { lI;ACF^ this("",0); zd3^k< } ~N8$abQJV m{by% YXDuhrs} public FileAccessI(String sName,long nPos) throws IOException ycrM8Mu
3 { l8+;)2p! oSavedFile = new RandomAccessFile(sName,"rw"); ft?c&h;At this.nPos = nPos; V"8w:? oSavedFile.seek(nPos); #,;Q|)AD:e } iu QMVtv ORhvo,.u d?A!0;(* public synchronized int write(byte[] b,int nStart,int nLen) :_pn| { MLN+ BuS int n = -1; vA*Q}]Ov try{ >n jX=r. oSavedFile.write(b,nStart,nLen); y>] Yq- n = nLen;
BO'7c1FU } < mp_[-c catch(IOException e) v8>bR|n5 { AL*M`m_ e.printStackTrace (); u_6x{",5I } Sw`+4
4 ;Mz7emt \`-a'u=S return n; :~'R| l }
ITfz/d8 ?cB26Zrcb rVB\\ } N;*
wd< ->2m/d4a [p_<`gU? /* 2 @t?@,c **SiteInfoBean.java $J*lD-h- */ ilwI qj package NetFox; unt{RVR% P9q ZjBS =a(]@8$!1 public class SiteInfoBean { PBgU/zVn w/@ tH *V{Y.`\ private String sSiteURL; //Site's URL gq050Bl) private String sFilePath; //Saved File's Path "8/BVW^bv private String sFileName; //Saved File's Name uuYeXI; private int nSplitter; //Count of Splited Downloading File "6>+IF #dkSAS m=V69
a# public SiteInfoBean() d bHxc@H {//nSplitter的缺省值为5 L4v26*P //default value of nSplitter is 5 |};-.}u^`h this("","","",5); a'?V:3 ] } !H~PF*,hY bOD]`*q hZ-?-F?*@ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 7myYs7N8[ { H Yw7* sSiteURL= sURL; Z*YS7 ~ sFilePath = sPath; n,`j~.l-=> sFileName = sName; 3Hf_!C=g this.nSplitter = nSpiltter; HEF\TH9 !%/(a)B$^$ mLDuizWI }
+f'@ ebhV;Q. ]BfJ~+ N public String getSSiteURL() b
4A1M { =jvL2ps< return sSiteURL; `Af5%m[ } a!\^O).pA (;(2n;i[M WMnxN34 public void setSSiteURL(String value) )3)x/WM { 3 V$
\s8 sSiteURL = value; ,e;_
Vb } afd.v$63 synueg lA n^)EL public String getSFilePath() 7towjwr { vCn\_Nu;W& return sFilePath; U+:Mu]97 } [E9)Da_)i JN3&(t Gp2Cwyv public void setSFilePath(String value) NGmXF_kqN { o':K4r; sFilePath = value; s,-}}6WO } B]:?4Ov 7E;`1lh7 vGchKN~_ public String getSFileName() l f_q6y { p_CC KU return sFileName; (Ji=fh+ } SyIi*dH Nh1,
w *kt%.wPJ public void setSFileName(String value) %!]CP1S { n,Q^M$mS0 sFileName = value; O}X@QG2_ } VN]j*$5
o_cAelI[! xmHW,#%ui\ public int getNSplitter() ,soXX_Y> { OZ}o||/Rc return nSplitter; p+16*f9,^ } BQ(sjJ$v6F }ni@]k#q< HjZf3VwI public void setNSplitter(int nCount) j<}y( ~ { 8?h&FbmB nSplitter = nCount; I36ClOG } #=#bv` } 60r0O5=|Fl UD_8#DO{m1 G4wJv^6i9 /* Wx8n) **Utility.java ]Ryg}DOQ */ }UqL2KXi4 package NetFox; 2C#b-Y1~N Su*Pd; CQ'4 ".7 public class Utility { wc?YzXP+ 0xUn#&A~ ##'uekSJ public Utility() J/\^3rCB { ,AG k4] !jRs5{n^Ol [>|6qY$D } Zz! yv(e)H XF?"G<2 //线程睡眠 Y.E]U!i* public static void sleep(int nSecond) 4q\gFFV4 { 7A{,)Y/w ^ try{ Y/qs\c+ Thread.sleep(nSecond); nBzju?X)I } l|fb;Giq=D catch(Exception e) _7,4C? { ,{BF`5bn| e.printStackTrace (); CW?R7A/ } -"}nm!j /5 } 2cko
GafG{ x{1S!A^ //日志 tW%!|T5/ public static void log(String sMsg) M)CQ|P { (*Q8!"D^6 System.err.println(sMsg); +4V"&S|& } r(I&`kF< y(Tb=: QQQN}!xPj public static void log(int sMsg) v[<;z(7Qk { `9nk{!X\ System.err.println(sMsg); <UbLds{+Uo } h3MZLPe } ij02J`w:Ra 7:n OAN}% #Wely~ /* ||'A9 **TestMethod.java GyGF<%nq */ OVEQ^\Q5D package NetFox; vd0uI#g%# 6gB;m$:fV U^&y*gX1 public class TestMethod { '(SqHP|8&g \{a 64 )uy2,`z public TestMethod() y@Ak_]{b { ///xx/weblogic60b2_win.exe 0t -=*7w% try{ #*
Iyvx SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); )J1xO^tE //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 0>U7]wZKc SiteFileFetch fileFetch = new SiteFileFetch(bean); ShJBOaE; - fileFetch.start(); J@o$V- KK } A<[BR*n catch(Exception e){e.printStackTrace ();} ]".SW5b_ 7?qRz sYd)r%%AU } d1u6*&@lf c<5(c%a r^;1Sm public static void main(String[] args) ~D_Wqr { |[MtUWEW new TestMethod(); A8 j$c ~ } {3K`yDF } /N=M9i\; 点击下载更多相关资料
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