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/* zW nR6*\ **SiteFileFetch.java :v 4]D4\o */ B7%U_F|m package NetFox; FgO)DQm import java.io.*; _vZOZKS+ import java.net.*; wyG;8I -K$)DvV^(E :hA#m[ public class SiteFileFetch extends Thread { E\$W_Lmr Q@H V- (A i mM_H;-X SiteInfoBean siteInfoBean = null; //文件信息Bean c`Wa^( long[] nStartPos; //开始位置 -{A<.a3P}= long[] nEndPos; //结束位置 o" SMbj FileSplitterFetch[] fileSplitterFetch; //子线程对象 GKCroyor long nFileLength; //文件长度 9!tW.pK5 boolean bFirst = true; //是否第一次取文件 \j.:3Xr boolean bStop = false; //停止标志 @ .KGfNu File tmpFile; //文件下载的临时信息 FPTK`Gd0 DataOutputStream output; //输出到文件的输出流 h7@6T+#WoT 8XbT`y //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) mVmGg, public SiteFileFetch(SiteInfoBean bean) throws IOException I2DpRMy { J8~haim siteInfoBean = bean; 9>$p //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); -Qe Z#w| tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); A\;U3Zu if(tmpFile.exists ()) Wez5N { O'~+_ykTl bFirst = false; BORA(, read_nPos(); U;I9 bK8 } Aa]" else U<-D(J { F5#YOck&, nStartPos = new long[bean.getNSplitter()]; 8$|=P!7EO nEndPos = new long[bean.getNSplitter()]; )CyS#j#= } $]8Q(/mbK LIdF 0 h1(4Ic Np)lIGE } :i7;w%B =qIyqbXz )_NO4`ejs/ public void run() cS+>J@L { Vq2$'lY //获得文件长度 P
}uOJVQ_ //分割文件 -%dCw6aX+ //实例FileSplitterFetch ]cruF#`% //启动FileSplitterFetch线程 *9i{,I@ //等待子线程返回 KGpA2Nx try{ ]:\dPw`A if(bFirst) .x1NWGDn { 8.~kK<)! nFileLength = getFileSize(); D
sWSGb if(nFileLength == -1) Mc}^LDX { 6`-jPR System.err.println("File Length is not known!"); UY2O Z&& } c0fo7| else if(nFileLength == -2) >"<Wjr8W!$ { 3D(0=$W System.err.println("File is not access!"); RX5dO% } nNU2([ else xP,hTE { #5j\C+P}| for(int i=0;i<nStartPos.length;i++) qyNyBr? { j8`BdKg nStartPos = (long)(i*(nFileLength/nStartPos.length)); ~3 bPIg7D } BF <ikilR for(int i=0;i<nEndPos.length-1;i++) 4a]P7fx- { ]g&TKm nEndPos = nStartPos[i+1]; GM<-&s!Uj } ofv)SCjd nEndPos[nEndPos.length-1] = nFileLength; &8 x-o, } OydwE } !0cD$^7 "w.3Q96r xZv#Es%# //启动子线程 ZQ0F$J)2~ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; nj53G67y for(int i=0;i<nStartPos.length;i++) "FKOaQ%IH { {Dmjm{
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), uRr o?m< siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3Ims6I] nStartPos,nEndPos,i); LE>]8[f6S Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); d<N:[Y\4l fileSplitterFetch.start(); h2""9aP! } \;"=QmRD%: // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), iW /}# siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); b%/ 1$>_ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", <3hRyG@vB nEndPos = " + nFileLength); ilx)*Y // fileSplitterFetch[nPos.length-1].start(); qeZ? 7#Gf 0s2v'A[\ s}% M4 //等待子线程结束 fsWTF<Y //int count = 0; hFl^\$Re //是否结束while循环 Fun^B;GA: boolean breakWhile = false; n#OB%@]<V %Q dn .UY^oR=b{ while(!bStop) ;x@~A^<el { u^qT2Ss0 write_nPos(); exUu7&*: Utility.sleep(500); _t #k,; breakWhile = true; lv+TD!b cq/$N 8C9-_Ng` for(int i=0;i<nStartPos.length;i++) wov\kV { zuy4G9P if(!fileSplitterFetch.bDownOver) JB[~;nLlC { *.d)OOpLo breakWhile = false; Y^EcQzLw break;
=.]4;z } XLOh7(
} 'Xq|Kf ( if(breakWhile) FZslv"F break; 8i#2d1O ~<F8ug# U6fgo3RH //count++; 0*D$R`$ //if(count>4) GM f
`A,> // siteStop(); ofw3S|F6 } LR.<&m%~. CSq4x5!_7> O so#+ System.err.println("文件下载结束!"); G.a b ql } My[pr_xg catch(Exception e){e.printStackTrace ();} e_ANUll1 } Y;^l%ePuW tm RXgTS RF53J yt //获得文件长度 W^LY'ypT public long getFileSize() c"V"zg22 { 'UX!*5k<: int nFileLength = -1; k(7&N0V%zz try{ -23w2Qt URL url = new URL(siteInfoBean.getSSiteURL()); xvl#w HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); q" sed] httpConnection.setRequestProperty("User-Agent","NetFox"); ]i ,{ 9YQb& A:N|\Mv2b int responseCode=httpConnection.getResponseCode(); [KaAXv
.X if(responseCode>=400) ?u=Fj_N_ { jaMjZp;{( processErrorCode(responseCode); f:|1_ j return -2; //-2 represent access is error s6v; } j0S#>t MvHm)h 6/Xk7B String sHeader; l2rd9-T {9;CNsd lC("y'
:: for(int i=1;;i++) ~>Fu5i $i { RD'Q :W //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 0gy/:T //Utility.log(in.readLine()); b vr^zH,C sHeader=httpConnection.getHeaderFieldKey(i); T?soJ]A if(sHeader!=null) wb5baY9 {
+wvWwie if(sHeader.equals("Content-Length")) o_Z5@F { A8fOQ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); i,E{f break; NI}yVV } wh\}d4gN } !&ayYu##{ else +N9X/QFKV break; \y)rt ) } C] eSizS. } [.8BTj1% catch(IOException e){e.printStackTrace ();} J^nBdofP catch(Exception e){e.printStackTrace ();} W*4-.*U8a #!qm ZN U;V7 u/{ Utility.log(nFileLength); )}]g]
g C'+YQ]u !M]uL&: return nFileLength; Lh"<XYY } {3p4:*} m
)zUU +p_CN*10H //保存下载信息(文件指针位置) .b&t;4q private void write_nPos() a
%'the { trA4R/
& try{ OwUhdiG output = new DataOutputStream(new FileOutputStream(tmpFile)); 2c,9e` output.writeInt(nStartPos.length);
0hNA1Fh{U for(int i=0;i<nStartPos.length;i++) 9ni1f{k { }6}l7x // output.writeLong(nPos); sw oQ' output.writeLong(fileSplitterFetch.nStartPos); [0[i5'K: output.writeLong(fileSplitterFetch.nEndPos); @* jz
o } S8w _ii3zd output.close(); qu6D 5t } C12Fl catch(IOException e){e.printStackTrace ();} Oo8VeRZ catch(Exception e){e.printStackTrace ();} V/LLaZTE } 2K6qY)/_ /cdC'g W$;,CU.v //读取保存的下载信息(文件指针位置) m6K}|j private void read_nPos() Z1f8/?`W { x0D*U?A try{ n;C
:0 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); xJvmhN/c int nCount = input.readInt(); L>NL:68yN nStartPos = new long[nCount]; |A9F\A->4 nEndPos = new long[nCount]; x8\?}UnB for(int i=0;i<nStartPos.length;i++) y`5
9A { fLD,5SN nStartPos = input.readLong(); ~i{(<.he nEndPos = input.readLong(); v2\FA(BPn } )Y0!~#
` input.close(); .x.]`b( } ")5":V~fN catch(IOException e){e.printStackTrace ();} rgv?gaQ> catch(Exception e){e.printStackTrace ();} l
-m fFN } w"|L:8 1..+F0U a=1@*ID private void processErrorCode(int nErrorCode) 8.=BaNU { =.U[$~3q% System.err.println("Error Code : " + nErrorCode); q=m'^
,gPS } oj<gD $am$EU?s Xp% v.M //停止文件下载 wqs?828x public void siteStop() Hqx-~hQO { *?>T,gx} bStop = true; E \EsWb for(int i=0;i<nStartPos.length;i++) u8g~ fileSplitterFetch.splitterStop(); v`x.)S1 Tc:)-
z[o FFpT~. } ({)+3]x } fc3{sZE2M //负责部分文件的抓取 [;yOBF **FileSplitterFetch.java W:nef<WH */ On.{!:"I/ package NetFox; rJTa F6|]4H.3Q RVmh6m import java.io.*; EU;9*W< import java.net.*; eHZws`W
(@VMH !3 LEf^cM=> public class FileSplitterFetch extends Thread { vF+7V*< n\D&!y[]F vX"*4m>b?+ String sURL; //File URL uym*a4J long nStartPos; //File Snippet Start Position "|
g>'wM* long nEndPos; //File Snippet End Position 9YyLf ; int nThreadID; //Thread's ID At>DjKx]O boolean bDownOver = false; //Downing is over vWv" boolean bStop = false; //Stop identical T2W eE@o FileAccessI fileAccessI = null; //File Access interface $6 9&O ,V m
< rK hH3RP{'= public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException {9pZ)tB { c_pr this.sURL = sURL; UHkMn this.nStartPos = nStart; N!=v4f this.nEndPos = nEnd; Lv7(st%` nThreadID = id; 3M7/?TMw{6 fileAccessI = new FileAccessI(sName,nStartPos);//定位 QO~P7r|A } uyWunpT 2- h{N q:0N<$63 public void run() 783,s_ { >T-u~i$s
while(nStartPos < nEndPos && !bStop) *n
]GsOOn { C2I_%nU Z1 j2[+ztG tw/dD + try{ /Iokf@5 URL url = new URL(sURL); #q$HQ&k HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ()?(I?II httpConnection.setRequestProperty("User-Agent","NetFox"); n;_sG>N String sProperty = "bytes="+nStartPos+"-"; v{N`.~,^ httpConnection.setRequestProperty("RANGE",sProperty); tSUEZ62EY Utility.log(sProperty); 5Ln,{vsv 1n8/r}q'H [l??A3G InputStream input = httpConnection.getInputStream(); ?e4YGOe. //logResponseHead(httpConnection); -@2iaQ(5a2 @b%=H/5\ k]|~>9eY] byte[] b = new byte[1024]; +@f26O7$* int nRead; lfgq=8d while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Qd{CMmx { ;ef}}K nStartPos += fileAccessI.write(b,0,nRead); lrE5^;/s1 //if(nThreadID == 1) ? :%@vM // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ec;o\erPG } I$G['`XX/ gz9j&W.
JPHL#sKyz Utility.log("Thread " + nThreadID + " is over!"); z&\a:fJ& bDownOver = true; J*A,o~U| //nPos = fileAccessI.write (b,0,nRead); |YWD8 + } C.-,^+t;g catch(Exception e){e.printStackTrace ();} [|$h*YK } {S)6;|ua' } O=t_yy Ll't>) vI>w e //打印回应的头信息 T?0eVvM public void logResponseHead(HttpURLConnection con) BDDlQci38 { O0v}43J[ for(int i=1;;i++) F/{!tx {
b8t7u String header=con.getHeaderFieldKey(i); qe#tj/aZ if(header!=null) 0[(8 //responseHeaders.put(header,httpConnection.getHeaderField(header)); ? OM!+O Utility.log(header+" : "+con.getHeaderField(header)); 1CZgb else <'oQ \eB break; PC8Q"O } (ZZ8L-s } >+1duAC cV6D<,) ED gag public void splitterStop() .`eN8Dl1 { h[Y1?ln&h bStop = true; K\r8g=U } + &Eqk .L~AL|2_ (w3YvG. } 2/^3WY1U </zEg3F\ C,r;VyW6BI /* *i%d,w0+ **FileAccess.java ~36!?&eA8 *//文件访问(定位,写) d7upz]K9g package NetFox; q|(HsLs import java.io.*; tyFzSrfc ^nz.j C1)!f j= public class FileAccessI implements Serializable{ J
ZS:MFA r#a=@ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 oG\Vxg* RandomAccessFile oSavedFile; SqpaFWr long nPos; ZY+qA ;A*]l'[- oMa6(3T?E public FileAccessI() throws IOException I\ob7X'Xu! { lymCH this("",0); NXrlk } CD~.z7,LC >kVz49j &h/Xku&0 public FileAccessI(String sName,long nPos) throws IOException a`>B Ly5o { U5de@Y oSavedFile = new RandomAccessFile(sName,"rw"); h2R::/2. this.nPos = nPos; #\m<Sz5Gp# oSavedFile.seek(nPos); onzxx4bax } f+!(k)GWd k9!{IScq F JyT+ public synchronized int write(byte[] b,int nStart,int nLen) q_58;Bv { (!WD1w int n = -1; nNn:- try{ kffcm/ oSavedFile.write(b,nStart,nLen); ~]2K^bh8& n = nLen; + ePS14G } kxv1Hn"`{E catch(IOException e) YaqJ,"GlT { 7kEn \ e.printStackTrace (); [4f{w%~^ } 3!]rmZ-W > ~O.@| Gd85kY@w7 return n; JWxwJex } gPPkT" ym1Y4, @q)d } P&Vv/D j8sH|{H!Nq wibNQ`4k /* cvL;3jRo **SiteInfoBean.java s~X%Y<9l */ =I_'.b package NetFox; cr;da) tCt#%7J;a eaU public class SiteInfoBean { p`qgrI` ?:0Jav sYA1\YIii private String sSiteURL; //Site's URL BI@[\aRLQ private String sFilePath; //Saved File's Path $I?"lky private String sFileName; //Saved File's Name >A"(KSNL private int nSplitter; //Count of Splited Downloading File pQB."[n %xLhZ\ xAm6BB
c public SiteInfoBean() Ny/MJ#Lq {//nSplitter的缺省值为5 *vMn$,^0h9 //default value of nSplitter is 5 )^hbsMhO this("","","",5); #RLt^$!H } J{G?-+` C0Z=~Q% >vsqG=x public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) _+MJ%'>S {
]ZS
OM\} sSiteURL= sURL; mt.))#1 sFilePath = sPath; Y'X%Aw;` sFileName = sName; HGg@ _9tW this.nSplitter = nSpiltter; >H,*H;6 BiBOr}ZQ 9Mcae31 } _yR^*}xJb K3uRs{l| u*9V&>o public String getSSiteURL() a 1*p*dM# { S+lqA-: return sSiteURL; "0TZTa1e } Iq.*8Oc tZo} ;|~' u ^RxD^=L public void setSSiteURL(String value) BY*8ri^u { #g!.T g' sSiteURL = value; alb.g>LNPP } TA~{1_l `Q,H|hp;k; *VN6cSq public String getSFilePath() a8Wwq?@ { aw> #P return sFilePath; _o~nr]zx } <OPArht <#HYqR', hE-M$LmN@ public void setSFilePath(String value) /qw.p# { QS`] sFilePath = value; 1h5 Akq } vZ Lf "kF g e96k{C`j0 public String getSFileName() &cTU
sK { FVBYo%Ap return sFileName; x,V r=FB } hpk7 Anp R G`1en =g|FT public void setSFileName(String value) P0b7S'a4! { $ME)#( sFileName = value; IE~ |iQ?- } >LuYHr #_ lDss a[TMDU;(/4 public int getNSplitter() T[j,UkgGo { u#SWj,X return nSplitter; 3+bt~J0 } Aiea\jBv Wm5dk9&x rVsJ`+L public void setNSplitter(int nCount) <54
S { Rx}Gz$ nSplitter = nCount; vr^qWn } Y
nZiTe@ } %~S&AE- t
|oR7qa{w W@!S%Y9 /* ;9g2?-svw
**Utility.java OZ!^ak */ 4E?Oky#}- package NetFox; 6LZ;T.0o S21,VpW\ t0?\l) public class Utility { POR\e|hRT] L j$;:/G \nqS+on] public Utility() G*v,GR { ?0xgRe< &jr3B;g!C 1ZRT:N<- } ~y[7K{{ ;T Mb7I[5v //线程睡眠 >-{Hyx public static void sleep(int nSecond) <rS F* { ws^ np try{ 7J&4akT{9 Thread.sleep(nSecond); SK.: Q5: } pY$Q catch(Exception e) <b<j=_3 { GowH]MO e.printStackTrace (); [PKR2UEe] } dAe')N:KPI } H 7
^/q7 D|#E9OQzs //日志 o%*xvH*A public static void log(String sMsg) 6\S~P/PkE { Pr,q*_Yy System.err.println(sMsg); *HB-QIl } #LN`X8Wz' 3DG_QVg^v s(roJbJ_; public static void log(int sMsg) S`?!G&[!> { 9Lfv^V0 System.err.println(sMsg); 8e"gW >f } /vb`H>P } -s'-eQF J mlS$>O_aX 8sK9G`
k /* uA#;G/$ **TestMethod.java {cw /!B */ q6X1P"%. package NetFox; #yvGK:F eQvg7aO; -o
EW:~y public class TestMethod { 5QO9Q]I#_\ ~.lPEA %% _oDz- public TestMethod() vgN&K@hJ { ///xx/weblogic60b2_win.exe @!d{bQd, try{
1ZB"EQ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); _8agtQ:< //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); :S(ZzY
Q SiteFileFetch fileFetch = new SiteFileFetch(bean); "G9xMffW fileFetch.start(); ?#Q #u|~ } F^fdIZx catch(Exception e){e.printStackTrace ();} 2T[9f;jM' zs#@jv$ ;mKb] } &XUiKnNW Yp2e Bgo" >~+ELVB& public static void main(String[] args) {P#|zp 4C{ { &Z|P2 dI new TestMethod(); VTHH&$ZNq } -1ub^feJ, } n>U5R_T 点击下载更多相关资料
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