-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* ;_Z[' % **SiteFileFetch.java XdxSi"+ */ 1'"TO5 package NetFox; Th>ff)~e import java.io.*; sw$$I~21 import java.net.*; I$w:qS&: Iu|4QE X/' t1 public class SiteFileFetch extends Thread { w=feXA3-S EwKFT
FL {kNV|E SiteInfoBean siteInfoBean = null; //文件信息Bean N(=Z4Nk5 long[] nStartPos; //开始位置 ap|$8G long[] nEndPos; //结束位置 %UokR" FileSplitterFetch[] fileSplitterFetch; //子线程对象 1E]TH/JK long nFileLength; //文件长度 * faG0le boolean bFirst = true; //是否第一次取文件 <Po$|$_~ boolean bStop = false; //停止标志 ft><Ql3 File tmpFile; //文件下载的临时信息 f )Ef-o DataOutputStream output; //输出到文件的输出流 KO3X)D<3 JsD|igqF- //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) vA&MJD{ public SiteFileFetch(SiteInfoBean bean) throws IOException Jwt_d}ns { w9]HJ3qi siteInfoBean = bean; 2U.'5uA"L //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ;G|#i?JJ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); '
>R?8Y if(tmpFile.exists ()) x,: DL)$1 { 5~GH*!h%; bFirst = false; Dlqvz|X/ read_nPos(); "cD MFu } #Q'j^y7=z else `b?o%5V2x { S}/5W nStartPos = new long[bean.getNSplitter()]; >7,?X_:A-1 nEndPos = new long[bean.getNSplitter()]; 5-?*Boi>i } My<.^~ 2D)B%nM[ 'B yB1NL #bCQEhCy } 1=z6m7@'- z,xGjSP yB2}[1 public void run()
WiiAIv& { *!m(oP //获得文件长度 u1;sH{YK> //分割文件 JpE7"Z"~MS //实例FileSplitterFetch hAU@}"=G //启动FileSplitterFetch线程
34<k)0sO //等待子线程返回 y/>IF|aX try{ \zLKSJ] if(bFirst) [PX%p;"D { jT=fq'RK nFileLength = getFileSize(); CWY-}M if(nFileLength == -1) )0?u_Z]w9 { ,xI
FF-[0 System.err.println("File Length is not known!"); 9v@P|
} Kw=][}d`D else if(nFileLength == -2) )}lO%B'K { ^?5HagA System.err.println("File is not access!"); PvB{@82 } +;/ s0 else 8/T[dn { hg2UZ%
Y for(int i=0;i<nStartPos.length;i++) 10IX84 { = P$Q;d nStartPos = (long)(i*(nFileLength/nStartPos.length)); W$xW9u8@+( } F4PWL|1 for(int i=0;i<nEndPos.length-1;i++) QWwdtk { )|wC 1J!L nEndPos = nStartPos[i+1]; $O_{cSKg7 } ftxy]NLF nEndPos[nEndPos.length-1] = nFileLength; Qv6-,6< } P:%r3F } d.yATP T^Ol=QCu #
11<=3Yj //启动子线程 t?wVh0gT fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; T~8kKw for(int i=0;i<nStartPos.length;i++) s"5wnp6pW { @%BsQm fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 4^T_" W} siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), P,@/ap7J nStartPos,nEndPos,i); "7J38Ej\ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ZRj/lQ2D fileSplitterFetch.start(); ^cCNQS}r } ?7uK:'8 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *i>hFNLdOM siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); NA=m<n# // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 4*'ZabDD nEndPos = " + nFileLength); J,:Wv`N:9~ // fileSplitterFetch[nPos.length-1].start(); 4s6,`- hc*t Q2 pi5DDK //等待子线程结束 [<WoXS1LX //int count = 0; [ J4n% //是否结束while循环 CsEU:v boolean breakWhile = false; jo'
V.]\ B#r"|x# [ Je4hQJ<h while(!bStop) gg/2R?O] { :. u2^*< write_nPos(); G=er0(7< Utility.sleep(500); Rj3ad 3z'E breakWhile = true; KAgxIz!^-1 |$g} &P8; _rg*K for(int i=0;i<nStartPos.length;i++) ?[;>1+D { liMw(F2 if(!fileSplitterFetch.bDownOver) N}nE?|N=5 { o)n=n!A breakWhile = false; 7{\6EC}d[& break; ~r_2V$sC2 } TE:|w
Xe } kB.CeG]tk if(breakWhile) k$GtzjN break; 2~R%_r+< "B>8on8O (TU/EU5 //count++; 3L36
2 //if(count>4) aNBwb9X // siteStop(); B=~uJUr } =b, m31 md `=2l zkquXzlgB System.err.println("文件下载结束!"); b=5ZfhIg[ } ~n$\[rQ catch(Exception e){e.printStackTrace ();} .03Rp5+v } tUt_Q;%yC WIabQ_ fX Tp|>(~;ai //获得文件长度 my0iE: public long getFileSize() 9N<=,!;5~s { 4'TssRot@h int nFileLength = -1; ^B1$|C
D, try{ >pp#>{} URL url = new URL(siteInfoBean.getSSiteURL()); NFF!g]QN HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Z/T(4 httpConnection.setRequestProperty("User-Agent","NetFox"); tSe[*V4{'
XRHngW_A yb,X
}"Et int responseCode=httpConnection.getResponseCode();
vR&b2G7o if(responseCode>=400) [=",R&uD$ { `Tei processErrorCode(responseCode); p[&b@U# return -2; //-2 represent access is error oJQ
\?~ } z;MPp#Y t)= dKC q0DRT4K String sHeader; [RY Rt/?Q =K_&@|f+B |*DkriYY for(int i=1;;i++) lF
t^dl^ { ?C- ju8]| //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); m>RtKCtP //Utility.log(in.readLine()); `X)A$lLr sHeader=httpConnection.getHeaderFieldKey(i); [b_qC'K[ if(sHeader!=null) 1 e]D=2y { Z;,G:@, if(sHeader.equals("Content-Length")) 0
vYG#S { |>OBpb nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); x4(8
=&Z break; ^C92R"*Qu } fzA Fn$[ } x6^Y&,y9kU else bDm7$ ( break; F`GXho[ } %'X~9Pvi } r*dNta< catch(IOException e){e.printStackTrace ();} Ud7Z7?Ym catch(Exception e){e.printStackTrace ();} 1xu~@v60 ]s!id[j ^!x! F Utility.log(nFileLength); 8]oolA:^4s M6bM`wHH> '1(6@5tyWk return nFileLength; CRD=7\0(D+ } Ql%B=vgKL "vg.{ jgS3# //保存下载信息(文件指针位置) z~==7:Os private void write_nPos() D/JSIDd { q#SEtyJL try{ 3=^)=yOd output = new DataOutputStream(new FileOutputStream(tmpFile)); s;..a&C' output.writeInt(nStartPos.length); I ~^Xw7 for(int i=0;i<nStartPos.length;i++) ,L lYRj 5 { (
mn:!3H% // output.writeLong(nPos); 00{a}@n output.writeLong(fileSplitterFetch.nStartPos); gwdAf%|f output.writeLong(fileSplitterFetch.nEndPos); Pouo# 5 } 1)jeawVmj output.close(); N&eo;Ti } _RUL$Ds catch(IOException e){e.printStackTrace ();} ^*.+4iHx catch(Exception e){e.printStackTrace ();} ^G2M4+W| } SM%/pu; ' Ttsscv 3l,-n|x //读取保存的下载信息(文件指针位置) S;jD@j\t& private void read_nPos() tv`b## { l($8HAJ try{ tC(Ma I DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); p2k`)=iX int nCount = input.readInt(); jvAjnh# nStartPos = new long[nCount]; ;]b4O4C\ nEndPos = new long[nCount]; DA04llX~ for(int i=0;i<nStartPos.length;i++) 5!cp^[rGL { Sc#3<nVg nStartPos = input.readLong(); @}:E{J#g nEndPos = input.readLong(); x0jaTlU/ } *W2)!C| input.close(); 4(VV@:_% } ExSM=
catch(IOException e){e.printStackTrace ();} F\^8k /0 catch(Exception e){e.printStackTrace ();} SDV#p];u } LMx/0 l2:-).7xt 3;VH'hh_ private void processErrorCode(int nErrorCode) %p$XK(6 { vd(S&&]o1 System.err.println("Error Code : " + nErrorCode); _p5#`-%mM } dP(.l}O /d,u"_=l ~*"ZF-c, //停止文件下载 C:}1r public void siteStop() T/2k2r4PD { ]jC{o,?s bStop = true; h# KSKKNW for(int i=0;i<nStartPos.length;i++) eY'nS fileSplitterFetch.splitterStop(); 1#%H!GKvTU ot[ZFF\ AIY 1sSK } p
JT)X8K" } U,Uy0s2r //负责部分文件的抓取 od5nRb **FileSplitterFetch.java J(@" 7RX */ 8Iu6r}k?~` package NetFox; =}kISh mXyN{`q= 4w=v
/WDo import java.io.*; fM7B<eB import java.net.*; sve} ent /3Gq&[R{ ZOcpF1y public class FileSplitterFetch extends Thread { M2p|&Z% 8<mloM-4 YY :{/0? String sURL; //File URL 9#:fQ!3` long nStartPos; //File Snippet Start Position +_$s9`@]6 long nEndPos; //File Snippet End Position xw_klHL-o int nThreadID; //Thread's ID R9 Ab.t boolean bDownOver = false; //Downing is over ]Idwy|eG boolean bStop = false; //Stop identical T4Vp0i FileAccessI fileAccessI = null; //File Access interface
{U$XHG R]e&JoY A[^#8evaK public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException dor1(@no| { |LZ{kD| this.sURL = sURL; G+Z ,ic this.nStartPos = nStart; ,Yx<"2 W this.nEndPos = nEnd; $[?N^
nThreadID = id; /<n7iIK) fileAccessI = new FileAccessI(sName,nStartPos);//定位
[?|yQ x } }2LWDQ;po %&&)[ Y'~O_coG public void run() !j`<iPI7B { UkpTK8>& while(nStartPos < nEndPos && !bStop) " "m-5PGYo { pZopdEFDK| gC(S(osF 4'dN7E1*f try{
%G\nl URL url = new URL(sURL); 8y<.yfgG HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <mlN\BcX; httpConnection.setRequestProperty("User-Agent","NetFox"); l+>Y String sProperty = "bytes="+nStartPos+"-"; !;h&@LXG( httpConnection.setRequestProperty("RANGE",sProperty); {l!{b1KJ Utility.log(sProperty); h)ZqZ'k$ B
}euIQB 6xtgnl#T InputStream input = httpConnection.getInputStream(); uA[
: //logResponseHead(httpConnection); TP {\V>*Yz ^.iRU'{ RV_I&HD! byte[] b = new byte[1024]; 2(0%{*m int nRead; _b&26!gl while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 1uN;JN
`_ { (}6\_k[}m nStartPos += fileAccessI.write(b,0,nRead); X,aRL6>r //if(nThreadID == 1) 6`Y:f[VB // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }Vob)r{R@ } HVoPJ!K3 4)D~S4{E5 "5<! Utility.log("Thread " + nThreadID + " is over!"); ><D2of| bDownOver = true; 035jU ' //nPos = fileAccessI.write (b,0,nRead); keRLai7h } Y)F(-H) catch(Exception e){e.printStackTrace ();} 7F0J*M } ,'HjL:r } RHn3\N *(1<J2j
-*KKrte //打印回应的头信息 LYL_Ah'= public void logResponseHead(HttpURLConnection con) XZ]ji9' { !;(Wm6~*ad for(int i=1;;i++) h[iO'Vq { kN1R8| pv String header=con.getHeaderFieldKey(i); "*D9.LyM if(header!=null) {+_p?8X //responseHeaders.put(header,httpConnection.getHeaderField(header)); 8g!79q\c4 Utility.log(header+" : "+con.getHeaderField(header)); ~mt{j7 else 48^C+#Jbc break; Vf~-v$YI } '}(>s%~ } ;@ixrj0u rZpsC}C' 0j4n11# public void splitterStop() dR.?Kv(,E { LKc p.i bStop = true; =,;$d*h } frPQi{u$ 5j.@)XXe (nq""kO6' } .6$=]hdAp Uv>e :U7 ; %i3[x.M /* %.f%Q?P **FileAccess.java |wv+g0]Pg^ *//文件访问(定位,写) ,~38IIS>_ package NetFox; +`gU{e,p import java.io.*; 0]*W0#{Zj $t^Td< $8U$.~v public class FileAccessI implements Serializable{ 2e1%L,y{W YYFS
({ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 j0+D99{R RandomAccessFile oSavedFile; e#k rr long nPos; 1)h<) KJOb1MM #tHYCSr] public FileAccessI() throws IOException &x\)] i2f { 'D`lVUB this("",0); qGV(p}$O } B,_K mHItd E_A5KLP AEnkx!o public FileAccessI(String sName,long nPos) throws IOException KG(FA { VT4>6u} oSavedFile = new RandomAccessFile(sName,"rw"); E"p _!!1 this.nPos = nPos; H/M]YUs/3 oSavedFile.seek(nPos); tlD^"eq4: } 5<`83;R9 qzvht4 QeFt
WjlqC public synchronized int write(byte[] b,int nStart,int nLen) n=JV*h0 { ,N,@9p int n = -1; 24 [cU try{ J`0dF<<{[y oSavedFile.write(b,nStart,nLen); ZDzG8E0Sq n = nLen; ]?T^tJ } Hpz1Iy@ catch(IOException e) ZG1TRF " { !9HWx_,|Z e.printStackTrace (); oXht$Q } ~Azj Y 8 9v;[T%% cy!P!t,@ return n; &L?]w=* } eP:\\;
; q1L>nvE $Bc3| `K1v } V >eG\ b|k^ #W/Ch"Kv /* <m~8pM **SiteInfoBean.java <5j%!6zo */ }jC^&%| package NetFox; E A55! 0[d*Z AU)\ lyB public class SiteInfoBean { Bf y =&k[qqxg 9pj6`5Zn@6 private String sSiteURL; //Site's URL u@:[ dbJ private String sFilePath; //Saved File's Path K@2"n|
S; private String sFileName; //Saved File's Name Z-4/xi7 private int nSplitter; //Count of Splited Downloading File Q6URaw#Yt` )i.pE]!+ n05GM.|*s public SiteInfoBean() A9]&w {//nSplitter的缺省值为5 \}n_Sk //default value of nSplitter is 5 4noy!h this("","","",5); .Ow8C } W+8s> r7V !M1 -{Ar5) ?=' public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 2{BS `f { )sK53O$ sSiteURL= sURL; s{7bu|0 sFilePath = sPath; ADOA&r[ sFileName = sName; A2L"&dl this.nSplitter = nSpiltter; ?-2s}IJO XefmC6X ~&<vAgy, } Crj7n/mp]s ]gnEo.R 7Q Ns q public String getSSiteURL() +3XaAk { ^yl}/OD return sSiteURL; /%jX=S.5h< } ;K>'Gl H{i|?a) =~W=} public void setSSiteURL(String value) ci2Z_JA+ { tcl9:2/^] sSiteURL = value; SvkCx>6/G } nIL67& Ja&S_'P[ &M3KJ I0L public String getSFilePath() t~4Cf]) { 4bw4!z9G return sFilePath; nJYIkfdA } IaOR%Bg EBL-+%J8 ,UVu.RjXN public void setSFilePath(String value) K8[Um!( { ='+I dn#5 sFilePath = value; !"RRw&0M } [742s]j Nr*X1lJ6 w?8\9\ ;? public String getSFileName() A1Uy|Dl { B1U!*yzG6 return sFileName; GNrRc3dr$ } l.
cp[ cvT@`1 H
n]( )/ public void setSFileName(String value) ?tqJkL# { uF}B:53A sFileName = value; za 7+xF
} @'M"c
q +kE~OdZG aqQ+A:g public int getNSplitter() -L6CEe { [iO8R-N8d return nSplitter; eGpKoq7a } #+U1QOsz 1$C?+H zv/dj04> public void setNSplitter(int nCount) d8 Jf3Mo { (.Ak* nSplitter = nCount; CDuA2e } *pnaj\ } |`o1B;lc w8 UUeF t18j2P>` /* 3< 6h~ek) **Utility.java 6:; >id${ */ LCj3{>{/= package NetFox; /5L\:eX% ?mK&Slh. q`L)^In" public class Utility { Qmo}esb'(
#QcRN?s GRofOJ public Utility() jgPUR#) { MXEI/mDYK T=sAy/1oR ibwV#6 } 1HAnOy0 =v<A&4 //线程睡眠 0QfDg DX public static void sleep(int nSecond) C$C>RYE?. { +%K~ try{ vV9vB3K5? Thread.sleep(nSecond); EH M 59s|B } 8qw{e`c catch(Exception e) &?1^/]'"r { <~w 3[i=
e.printStackTrace (); 6P>}7R} } P*|=Z>%[0 } , .;0xyc srO>l ;Vf/ //日志 NR8`nc1~ public static void log(String sMsg) m||9,z- { %+|sbRBb System.err.println(sMsg); QE)zH)(
} I''n1v?N ,1Z([R* 8c9<kGm$E public static void log(int sMsg) aL90:,V { M,li\)J!& System.err.println(sMsg); &s?uMWR } 5}]+|d; } [ @"6:tTU .%.7~Nu, L'aB/5_% /* hp9LV2_5 **TestMethod.java 7(tsmP */ Nz`v+sp package NetFox; #<eD ceCO *m~ qS!N\p~> public class TestMethod { Pz:,de~5Qm 9Sd?,z {}Is&^3Z public TestMethod() aD'Ax\- { ///xx/weblogic60b2_win.exe #rBfp|b]1 try{ U2W Hs3 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Tt{z_gU6 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); </xf4.C SiteFileFetch fileFetch = new SiteFileFetch(bean); 9=T;Dxn fileFetch.start(); w4TQ4
Y } '2<r{ catch(Exception e){e.printStackTrace ();} W 2;:p
H3 m&xVlS } u|AMqS Zxqlhq/) v;;3 K*c> public static void main(String[] args) p0zC(v0* { LK}FI*A_ new TestMethod(); vo*oCfm } zSfUM.fM } `W~ 点击下载更多相关资料
|