-
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
|
/* vSi_t
K4 **SiteFileFetch.java K\XH4kic */ TuW %zF/ package NetFox; 3~nnCR[R import java.io.*; Fu&EhGm6 import java.net.*; L\y;LSTU 6c^e\0q asY[8r?U public class SiteFileFetch extends Thread { \(t@1]&jw u7?$b!hG^C rQ7+q;[J SiteInfoBean siteInfoBean = null; //文件信息Bean ?wnzTbJN long[] nStartPos; //开始位置 hXqD<? long[] nEndPos; //结束位置 V& C/Z}\ FileSplitterFetch[] fileSplitterFetch; //子线程对象 u%~igt@x long nFileLength; //文件长度 +cD!1IT: boolean bFirst = true; //是否第一次取文件 6N)!aT9eo boolean bStop = false; //停止标志 3O7!`Nm@ File tmpFile; //文件下载的临时信息 $Of0n` e DataOutputStream output; //输出到文件的输出流 #j *d^j& vN3Zr34 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) BD`2l!d public SiteFileFetch(SiteInfoBean bean) throws IOException WVY\&|)$ { ]E] 2o siteInfoBean = bean; 1"pw //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); `,Ph/oM tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); *N{emwIq if(tmpFile.exists ()) H\XP\4#u { XJLQ{ bFirst = false; gY@N~'f;" read_nPos(); J>u
7, } {uGP&cS~( else .BFYY13H { Ok n(pJ0 nStartPos = new long[bean.getNSplitter()]; 2Ry1b+\ nEndPos = new long[bean.getNSplitter()]; &3yD_P_3 } F <hJp,q9 v@e~k-# gUeuUj 'uq#ai[5I } 4.IU!.Uo L[=a/|)TBV 5Hcf;P7 public void run() #!)n
{h+ { >@"Oe //获得文件长度
ss5m/i7 //分割文件 da (km+ //实例FileSplitterFetch ?JL:CBvCp //启动FileSplitterFetch线程 C-iK$/U //等待子线程返回 yRo-EP try{ :O(^w}sle if(bFirst) ^5=B`aich { xhRngHU\z< nFileLength = getFileSize(); d6W SL;$ if(nFileLength == -1) c+2FC@q{l { b$Vz2Fzx System.err.println("File Length is not known!"); /%Nr?V } EY \H=@A else if(nFileLength == -2) ;\p KDPr { H"qOSf{ System.err.println("File is not access!"); @-+Q#
Zz` } rL}YLR else 92^w8Z. { -YsLd 9^4 for(int i=0;i<nStartPos.length;i++) Nj?/J47?, { qu|B4?Y/CR nStartPos = (long)(i*(nFileLength/nStartPos.length)); .|/~op4; } "_`F\DGAZu for(int i=0;i<nEndPos.length-1;i++) S{Er?0wm.R { y~75r\"R nEndPos = nStartPos[i+1]; ^$t7+g } 6oBfB8]:d nEndPos[nEndPos.length-1] = nFileLength; ?:w1je7 } r3>i+i42 } 8jyG"%WO Sv &[f}S QR>gt; //启动子线程 U*3uq7 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 5< ja3 for(int i=0;i<nStartPos.length;i++) zL\OB?)5J { *6} N =Z fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), hcyM6:} siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), /c,(8{(O nStartPos,nEndPos,i); X$yN_7|+ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hXA6D) fileSplitterFetch.start(); ]8T!qS(UJd } sVl-N&/ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), VZ\B<i siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); d'Zqaaf k% // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", {uHU]6d3qy nEndPos = " + nFileLength); 0=K9`=5d0 // fileSplitterFetch[nPos.length-1].start(); 7PkJ-JBA Mb]rY>B4 mdw7}%5V //等待子线程结束 EI^06q4x //int count = 0; Ybn`3 //是否结束while循环 i@4~.iZ8 boolean breakWhile = false; Q_t`.jus ,~"$k[M LGl2$#x while(!bStop) [/X4"D-uOK { !&"<oPjr+ write_nPos(); Qm/u h Utility.sleep(500); l\s U breakWhile = true; m'f,_ \' *f?4
k70|'* Kh for(int i=0;i<nStartPos.length;i++) >Bgw}PI { )LyojwY_g if(!fileSplitterFetch.bDownOver) ~t~-A,1 { Iyyh!MVF breakWhile = false; |gU(s break; 4vwTs*eB` } 3#TV5+x*"` } w.0qp)} if(breakWhile) 'UYR5Y> break; #cCL.p"] ~SnSEhE PZ*pQ=` //count++; #/Eb*2C`b //if(count>4) X3V'Cy/sy // siteStop(); R>(@ZM& } m`FNIY sUU{fNC6| Iwc{R8BV System.err.println("文件下载结束!"); ivW(*c } )kkhJI*v catch(Exception e){e.printStackTrace ();} (4Zts0O\ } $]A/
o( q@xBJ[IM q2et|QCru //获得文件长度 'FS?a public long getFileSize() T"0,r$3: { ~PHB_cyth int nFileLength = -1; sn?]n~z try{ cJL'$`gWf URL url = new URL(siteInfoBean.getSSiteURL()); @!8ZPiW< HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /*c\qXA5 httpConnection.setRequestProperty("User-Agent","NetFox"); 4M^G`WA}t9 (1NA &JtV'@>v int responseCode=httpConnection.getResponseCode(); F<(i.o( if(responseCode>=400) ;j)FnY=: - { +fnK/%b processErrorCode(responseCode); C(K; zo*S( return -2; //-2 represent access is error 8 P>#l. # } jvQ*t_L w&x!,yd; 7ek&[SJ>,/ String sHeader; u3o#{~E/# fa<v0vb+ uSR~@Lj ~ for(int i=1;;i++) !0dNQ[$82 { [u._q:A //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); wX*K]VMn //Utility.log(in.readLine()); B.L]Rk\4 sHeader=httpConnection.getHeaderFieldKey(i); H/"lAXfb if(sHeader!=null) Ck /F9( { <Engi! if(sHeader.equals("Content-Length")) ~jb"5CX { MX ;J5(Ae nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); =k oSUVO0 break; mSo_} je( } Q[d}J+l4{ } 8zBWIi else ScSZGs 5& break; LvEnX S } ykFJ%sw3X } -> J_ ~ catch(IOException e){e.printStackTrace ();} MW+b;0U`# catch(Exception e){e.printStackTrace ();} oaK%Ww6~ Hp(D);0+) RAp=s Utility.log(nFileLength); %G?;!Lz k}#;Uy=5 <u=4*:QE return nFileLength; _fwb!T}$ } Kn?lHH*w7 jU5 }\oP@ A Z{^o4<q //保存下载信息(文件指针位置) 5IbJ private void write_nPos() mB0l "# F { "rAY.E] try{ -!8(bjlJ& output = new DataOutputStream(new FileOutputStream(tmpFile)); oQL59XOT4 output.writeInt(nStartPos.length); /NFz4h=> for(int i=0;i<nStartPos.length;i++) P(a.iu5 { [JaS??ig // output.writeLong(nPos); sk|=% }y output.writeLong(fileSplitterFetch.nStartPos); @;?T~^nGj output.writeLong(fileSplitterFetch.nEndPos); $ F S_E } Zx$ol;Yd output.close(); )}L??|# } p)~lL catch(IOException e){e.printStackTrace ();} P%MfCpyj catch(Exception e){e.printStackTrace ();} I_q~*/<h } z7-k`(l4 _qWliw:0# +B|7p9qy //读取保存的下载信息(文件指针位置) 9*:gr#(5 private void read_nPos() RJeSi`19T) { "+uNmUUnm try{ =KT7nl DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); >Ng)k]G int nCount = input.readInt(); b5:op@V nStartPos = new long[nCount]; #*>E*#?t nEndPos = new long[nCount]; vEG'HOP for(int i=0;i<nStartPos.length;i++) W~Z<1[ { F6hmku>\1 nStartPos = input.readLong(); 4m-I5!=O nEndPos = input.readLong(); j(#%tIv } -xD*tf* input.close(); $Q+s/4\ } H7[6yh catch(IOException e){e.printStackTrace ();} mNYl@+:psj catch(Exception e){e.printStackTrace ();} lHB) b}7E } !rhk
$L ~np,_yI N:"C+a( private void processErrorCode(int nErrorCode) x&A vUJ { 0qFH
s System.err.println("Error Code : " + nErrorCode); '!1$9o^$ } 3I 0eW%, 1t9 .fEmT W9zE{)Sc~ //停止文件下载 ;PyZ?Z; public void siteStop() q|)Q9+6$+ { s0hBbL0DH bStop = true; V^il$' for(int i=0;i<nStartPos.length;i++) r gcWRt fileSplitterFetch.splitterStop(); ]=F8p2w? O3NWXe< `3q;~ 9 } tK%c@gGU9 } La[K!u\B //负责部分文件的抓取 GQ_Ia\ **FileSplitterFetch.java )fU(AXSP */ hF&}lPVtv package NetFox; <JI&
{1 q\9d6u=Gm ?HHzQ4w%{ import java.io.*; (S^ck%]]a! import java.net.*; J0220 _ ]qw0V
dX
)W0 public class FileSplitterFetch extends Thread { *9gD*AnM, u2sR.%2U< 'qv;sB. String sURL; //File URL CV.+P- long nStartPos; //File Snippet Start Position rlznwfr7+ long nEndPos; //File Snippet End Position `EMi0hm&H int nThreadID; //Thread's ID +3^NaY`Y boolean bDownOver = false; //Downing is over ^i_Iqph= boolean bStop = false; //Stop identical Jfg7\&| FileAccessI fileAccessI = null; //File Access interface </E>tMW q^bO*bv _dU P7H ( public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException (v#pj8aE { /r.6XZs6 this.sURL = sURL; z \?UGxu} this.nStartPos = nStart; W8aU"_
this.nEndPos = nEnd; .gT4_ nThreadID = id; ^b53}f8H fileAccessI = new FileAccessI(sName,nStartPos);//定位 kR6A3?[ } p#H]\P' VO`"< fA8ozL T public void run() A0#Y, 1 { d\Jji 6W while(nStartPos < nEndPos && !bStop) \{PNw F? { aR:<<IF\ 8B@JFpg^
lfy7w| try{ SFO&=P:U URL url = new URL(sURL); x N`T HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); jp m#hH{R httpConnection.setRequestProperty("User-Agent","NetFox"); KU2$5[~j String sProperty = "bytes="+nStartPos+"-"; #%cR%Z httpConnection.setRequestProperty("RANGE",sProperty); f9']
jJ+ Utility.log(sProperty); YsAF{ j-* TXog ahp1!=Z-= InputStream input = httpConnection.getInputStream(); $Sb@zLi) //logResponseHead(httpConnection); 37KU~9-A 3'@&c?Fye eycV@|6u* byte[] b = new byte[1024]; '49L(>. int nRead; WF)s*$'uz; while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) l;5`0N?QO { "/y|VTV" nStartPos += fileAccessI.write(b,0,nRead); yqBa_XPV8 //if(nThreadID == 1) 1NGyaI // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); A`C-sD> } yiO31uQt B"[{]GP BY bs:QG1*. Utility.log("Thread " + nThreadID + " is over!"); +:y&{K bDownOver = true; `]hCUaV //nPos = fileAccessI.write (b,0,nRead); fKYKW?g;)Z } "7?t)FOo catch(Exception e){e.printStackTrace ();} }s6G!v^2"" } s*+ZYPk } pVz pN8! 1t%<5O;R 2*YP"Ryh //打印回应的头信息 N&N 82OG public void logResponseHead(HttpURLConnection con) ?w8pLE~E { kc|>Q7~{ for(int i=1;;i++) ^Yr|K { uOb2npPj String header=con.getHeaderFieldKey(i); hy=u}^F.C if(header!=null) 4)E|&)-fu8 //responseHeaders.put(header,httpConnection.getHeaderField(header)); x{2o[dK4} Utility.log(header+" : "+con.getHeaderField(header)); $~TfL{$ else FSVS4mtiX\ break; 2|
$k`I, } QglYU } F*X%N_n 6yp+h
sxt`0oE public void splitterStop() Z3Gm { UMv"7~ bStop = true; |9x%gUm } BQuRHi IV at=D&oy4"+ )I?RMR } xV?*!m$V%R V!H(;Tuuo >]^>gUmq /* xdCs5ko **FileAccess.java /AoVl'R *//文件访问(定位,写) \!m!ibr package NetFox; BZ2nDW*% import java.io.*; (}sDm~;s rXlx?GV >@z d\}@W public class FileAccessI implements Serializable{ i+U@\:= Q;=6ag' //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 p|b+I"M RandomAccessFile oSavedFile; <r0.ppgY long nPos; @pTD{OW? CG CQa0 ;gdi=>S_ public FileAccessI() throws IOException ?VUgwP_= { uAc@ Z- this("",0); #aj|vox} } 4c `8mD7xsg$ .@fK;/OuC public FileAccessI(String sName,long nPos) throws IOException U.HoFf+HN { |*Of^IkG0 oSavedFile = new RandomAccessFile(sName,"rw"); <'yf|N!9G this.nPos = nPos; $+A%ODv oSavedFile.seek(nPos); UwZu:[T6H } (s5< <Z2(qZ^Z MV%
:ES? public synchronized int write(byte[] b,int nStart,int nLen) iTj"lA { c*Eok?O int n = -1; hN Z4v/ try{ hTlnw[I oSavedFile.write(b,nStart,nLen); 5{8x*PSl n = nLen; (y-x01H } 'bZMh9| catch(IOException e) TS\9<L9S { &oon'q5; e.printStackTrace (); XRClBTKF } !w @1!Xpn1 MZ;"J82p 3'?h;`v\Lo return n; gJ<@;O8zu0 } -}=@
*See# >2]Eaw&W I;`Ko_i } V}vl2o E}xz7u 8O"x;3I9 /* z*Myokhf **SiteInfoBean.java ?)Tz'9l */ `E./p package NetFox; TSc~$Q] 4]Un=?)I J0IdFFZ|w public class SiteInfoBean { DBu)xr}7A O\|C,Epm &4mfzpK private String sSiteURL; //Site's URL {B'Gm]4 private String sFilePath; //Saved File's Path kGB#2J private String sFileName; //Saved File's Name mp&Le YYn private int nSplitter; //Count of Splited Downloading File 4@/ q_*3o wc<2Uc M!xm1-,[ public SiteInfoBean() 4FfwpO3,Ku {//nSplitter的缺省值为5 k7z(Gbzu //default value of nSplitter is 5 O4 +SD this("","","",5); v`z=OHc } x?k ~ERRp3Ee? IQ(]66c, public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) RT.wTJS; { MFc=B`/X sSiteURL= sURL; 9 NGeh*` sFilePath = sPath; eHF(,JI sFileName = sName; 1+16i=BF) this.nSplitter = nSpiltter; X]+(c_i:hC c~^]jqid] 1cHSgpoJ } ;qMnO_E I:uQB! [T}%q"< public String getSSiteURL() r|JiGj^om { Z?.p%*>`T= return sSiteURL; ch)Ps2i } i-i}`oN i#M a-0# )"pxry4v7J public void setSSiteURL(String value) ])$."g { `aO@N( sSiteURL = value; uDy>xJ| } S2At$47v (N~zJ.o iS:PRa1 public String getSFilePath() Zgy2Pot { *Lb(urf return sFilePath; 5ykk11!p$ } gT5Ji~xI U!;aM*67 .qqb>7|q public void setSFilePath(String value) RV#uy] { #T$'.M sFilePath = value; )bIK0h } #g-*n@
1 R>e3@DQ~ mP5d!+[8 public String getSFileName() njwR~ aL`| { _ \v@9Q\ return sFileName; sS1J.R } FB= +Qi52OG 1EAVMJ public void setSFileName(String value) GmmT'3Q { yZ?_q$4kEI sFileName = value; ax{-Qi7z-+ } ,Zcx3C:# mtWx ?x Q:fUM[ public int getNSplitter() wzQdKlV { xV n]m9i return nSplitter; =:n[{/O= } a`@<Z sR 21/a3Mlx# ;FgEE% public void setNSplitter(int nCount) ;@ll { u>Axq3F nSplitter = nCount; dl7p1Cr } /nMqEHCyg } 7AtXG^lK Z_OqXo= e/HX,sf_g /* k+Ma_H` **Utility.java C1Pt3 */ qLW-3W;WUH package NetFox; xU\:Vid+A O'& \-j 1 P#2TM public class Utility { >gi{x|/ C#?d=x x4m_(CtK public Utility() G`9F.T_Z^) { BE2\? q- A$"$`)P! Mi/'4~0Y } ]kplb0` |C2.Zay //线程睡眠 n%ArA])_& public static void sleep(int nSecond) r+#V{oE_ { qf&a<[p~ try{ _8b>r1$ Thread.sleep(nSecond); _]r)6RT } yYg&'3 catch(Exception e) HG3>RcB { CD<u@l,1 e.printStackTrace (); O"-PNF,J } |xgCV@ } k;:u| s8NS kFa?q}47 //日志 (b2^d public static void log(String sMsg) ]zMBZs { -qCJwz30 System.err.println(sMsg); -JO46
#m } V_d%g<n4 W%XS0k}x 6exlb: public static void log(int sMsg) a5~C:EU0 { qF6%XKbh= System.err.println(sMsg); [MXXY } y $DB } Cg\)BHv~ m}'@S+k^ WT
{Cjn /* fu "z%h] **TestMethod.java +p}Xmn */ gLxyRbVI package NetFox; z4fK{S dvWlx]' S"A_TH public class TestMethod { Pk]9.e1_ EkAqFcKLq sF3
l##Wv public TestMethod() qlT:9*&g { ///xx/weblogic60b2_win.exe `IRT w" try{ 257;@; SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); h=y(2xA //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ;3}b&Z[N] SiteFileFetch fileFetch = new SiteFileFetch(bean); n$0)gKN7 fileFetch.start(); 4_:e+ ql } 4wD^?S!p catch(Exception e){e.printStackTrace ();} K:50?r_-6 |w]i$`3'I AX Jj"hN } <4HuV.K ^g){)rz| M_ cb(=ey public static void main(String[] args) ;RZa<2 { (y4Eq*n%! new TestMethod(); e/D\7Pf } C4TD@ } s"F,=]HQ!G 点击下载更多相关资料
|