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/* \wo?47+= **SiteFileFetch.java $AfM>+GQ`n */ , 0imiv package NetFox; $@"l#vJPfc import java.io.*; Y-pzy']4 import java.net.*; .JYaH? }B8IBveu kB3H="3[[ public class SiteFileFetch extends Thread { m4aB*6<lq ZZk=E4aae >{N9kWY SiteInfoBean siteInfoBean = null; //文件信息Bean ?6Jx@ Sh long[] nStartPos; //开始位置 [p{#XwN long[] nEndPos; //结束位置 s8wmCzB~ FileSplitterFetch[] fileSplitterFetch; //子线程对象 61.Brp.eP long nFileLength; //文件长度 J!0DR4=Xi boolean bFirst = true; //是否第一次取文件 !6BW@GeF] boolean bStop = false; //停止标志 ^=T$&gD File tmpFile; //文件下载的临时信息 g,}_G3[j0m DataOutputStream output; //输出到文件的输出流 ^oVs+ vC |s"nM<ZNZ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Nd`%5%':: public SiteFileFetch(SiteInfoBean bean) throws IOException !;0U,!WI { 9
TvV= siteInfoBean = bean; -}=i 04^ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Rec6c&5_ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); G;&-\0>W if(tmpFile.exists ()) 1KMLG= { y&Mr=5:y bFirst = false; W{%TlN read_nPos(); K&nE_.kbl } v 0
}@ else n1JRDw"e$$ { Ey_" ~OB nStartPos = new long[bean.getNSplitter()]; ZYI{i?Te# nEndPos = new long[bean.getNSplitter()]; /]=C{)8 } %70~M_ L%BNz3:Dt TatpXN\ >SML"+> } TcIcS]w% [K9'<Qnu \n{qsf: public void run() IOb*GTb { :E_g"_ //获得文件长度 z*kutZ:6Y //分割文件 MNC*Glj= //实例FileSplitterFetch CsTF //启动FileSplitterFetch线程 9;_sC //等待子线程返回 1nQWW9i try{ \Kl+ 5%L if(bFirst) ?3*l{[@J { z54EG:x.7^ nFileLength = getFileSize(); 2@9Tfm(= if(nFileLength == -1) dls
ss\c^M { LO
< System.err.println("File Length is not known!"); zhpx"{_ } *RXbc~
H else if(nFileLength == -2) L!rw[x { vY%d System.err.println("File is not access!"); 9{-EJ) } vWRju*Z& else K%"5ImM { k *Q<3@S for(int i=0;i<nStartPos.length;i++) YQ39A_e
g { l%?T2Fm3> nStartPos = (long)(i*(nFileLength/nStartPos.length)); @\0Eu212 } 99}(~B for(int i=0;i<nEndPos.length-1;i++) ?0)&U { F">Qpgt nEndPos = nStartPos[i+1]; oX0 D } q8s0AN'@t' nEndPos[nEndPos.length-1] = nFileLength; OJ/,pLYu } Ko;{I?c } 0}$Hi CACTE
0|$v-`P$ //启动子线程 CPP`
qt%f fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; nyBJb(5"B for(int i=0;i<nStartPos.length;i++) c/zJv*}x? { Cz72?[6 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +)j$|x~(A siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), c%&:6QniZ nStartPos,nEndPos,i); !'mq ?C= Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _acE:H fileSplitterFetch.start(); I
6<*X } Bm"KOr$}- // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1jy9lP= siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); I 4,K43| // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 2C/$Ei^t nEndPos = " + nFileLength); #Yr9AVr}K // fileSplitterFetch[nPos.length-1].start(); c:-!'l$ ! Z2TL #@ kB'Fkqwm //等待子线程结束 HvM)e.! //int count = 0; U}MXT<6 //是否结束while循环 ^;/b+ /B0 boolean breakWhile = false; sB^<6W!`( TYJ:! 3~}uqaGt while(!bStop) 2'_:S@ { qjf[zF write_nPos(); eU<]o<
\Qo Utility.sleep(500); IG|X!l breakWhile = true; o3I Tr'; fRtUvC-#H pcT:]d[1) for(int i=0;i<nStartPos.length;i++) `t_W2y { ,!dh2xNH^ if(!fileSplitterFetch.bDownOver) j:E<p_T {
KnsT\>[K breakWhile = false; J(c{y]` J break; YN`H
BFH } A-4h } J.ck~;3 if(breakWhile) %!du,2 break; ^@qvl%j Y}uCP1v \|E^v6E%0 //count++; AgFVv5 //if(count>4) 7b<je=G6PA // siteStop(); ai
nG6Y<O` } =|I>G?g- |lJX 3 \>CYC| System.err.println("文件下载结束!"); @6mBqcE'? } d!:6[7X6 catch(Exception e){e.printStackTrace ();} xZ4~Oo@@_' } Z00+!Tnd P?t"jKp' jBU4F~1y //获得文件长度 P@,nA41,j public long getFileSize() KuMF^0V%c { DdVF, int nFileLength = -1; kAu+zX>S+ try{ pek%08VSEU URL url = new URL(siteInfoBean.getSSiteURL()); wi4=OU1L)a HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 1RK=,Wx httpConnection.setRequestProperty("User-Agent","NetFox"); ?r?jl;A& 'g$(QvGF9 4\6N~P86 int responseCode=httpConnection.getResponseCode(); iVd.f
A if(responseCode>=400) (cN}Epi(D { *e-A6Sh processErrorCode(responseCode); emdoA:w+ return -2; //-2 represent access is error IRn2| } m< 3Ao^I+ d1U\ft:gV -u?S=h} String sHeader; !!Aj<*% |7X:TfJ `;)\u for(int i=1;;i++) ik!..9aB { ^NX"sM0g //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); .!G94b //Utility.log(in.readLine()); xA9:*>+> sHeader=httpConnection.getHeaderFieldKey(i); >lBD<;T if(sHeader!=null) (HSgEs1d { #{=;NuP if(sHeader.equals("Content-Length")) x-?{E { :PtF+{N> nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ppFe-wY break; jcI&w#re } YhY:~ } ds&e|VSH; else ]ut5S>," break; $ZNu+tn
Y } $dA-2e10 } 3"G>>nC& catch(IOException e){e.printStackTrace ();} 8HR mQ catch(Exception e){e.printStackTrace ();} e0J6Ae4V[ z,VD=Hnz LrATSq@ Utility.log(nFileLength); Ma+$g1$ bks/`rIA "m ^'
&L return nFileLength; Z7RiPSdxp } m+#iR}*1L 1P(|[W1 TOoQZTI //保存下载信息(文件指针位置) r\blyWi private void write_nPos() k%E2n:|* { 04*6(L)h* try{ WdnIp! output = new DataOutputStream(new FileOutputStream(tmpFile)); :"l-KQ0 output.writeInt(nStartPos.length); \#rIQOPl? for(int i=0;i<nStartPos.length;i++) Vo7dAHHL { OX"j# // output.writeLong(nPos); ;\[(- )f!= output.writeLong(fileSplitterFetch.nStartPos); y|Ir._bt output.writeLong(fileSplitterFetch.nEndPos); 1c;6xc,ub } r" K':O6y output.close(); lRveHB&V } E=cwq" catch(IOException e){e.printStackTrace ();} 2e|N@j
& catch(Exception e){e.printStackTrace ();} ^qC;Nh4F } Ton94:9bZ 3;8!rNN ZvUCI8 //读取保存的下载信息(文件指针位置) Y&
F=t/U2 private void read_nPos() HU9Sl*/ { 4[BG# try{ QjC22lW- DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); tOOchu?= int nCount = input.readInt(); iC*F nStartPos = new long[nCount]; [xT:]Pw} nEndPos = new long[nCount]; EZYBeqv for(int i=0;i<nStartPos.length;i++) P)uDLFp] { A.D{.a nStartPos = input.readLong(); r%e KFS nEndPos = input.readLong(); XfKo A0 } V~
TWKuR input.close(); z
Nl , } J!5v~<v?- catch(IOException e){e.printStackTrace ();} P<Zh XN' catch(Exception e){e.printStackTrace ();} lw :`M2P, } MCT'Nw@A qVdwfT{1J B}eA\O4}I private void processErrorCode(int nErrorCode) _ z;q9&J) { b9"jtRTdz System.err.println("Error Code : " + nErrorCode); >/#KI~}'N } _ib"b# #BQ.R, $z$u{ //停止文件下载 7c;9$j public void siteStop() jr)7kP@ { Ed:eGm } bStop = true; 0x9x@gF for(int i=0;i<nStartPos.length;i++) iA,kX\nK fileSplitterFetch.splitterStop(); >OP+^^oZ< f"(X(1F c5Q<$86 } &|aqP
\Q5 } (708H_ //负责部分文件的抓取 c)Ic#<e( **FileSplitterFetch.java DaH?@Q */ gZEi]/8_ package NetFox; 5"/J^"!h .7
asW( *c)uGz'cD
import java.io.*; $46{<4. import java.net.*; -!)xQvagD. x)UwV !J=sk4T public class FileSplitterFetch extends Thread { 4HAp{a1 ||zb6|7I4 :iiw3#] String sURL; //File URL >I<r)w] long nStartPos; //File Snippet Start Position )?2e long nEndPos; //File Snippet End Position #eN{!Niy&U int nThreadID; //Thread's ID )9S>ZZF boolean bDownOver = false; //Downing is over @
a4/ELx boolean bStop = false; //Stop identical z`6fotL FileAccessI fileAccessI = null; //File Access interface L.T?}o Q`#4W3-, 2Sq_Tw3^ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException c!hwmy; { cD4
kC>P* this.sURL = sURL; TM8=U-A this.nStartPos = nStart; huudBc
A[ this.nEndPos = nEnd; 5`]UE7gT nThreadID = id; nr)c!8 fileAccessI = new FileAccessI(sName,nStartPos);//定位 p7ir*r/2 } c>1RP5vx ZvGgmLN UA~RK2k? public void run() {"vkji> { W-
$a
Y2 while(nStartPos < nEndPos && !bStop) >|Q:g,I { NWfAxkz{/ ?k[p<Uo 3M0+"l(X try{ ez3Z3t` URL url = new URL(sURL); fZKt%m HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); kGkA:g: httpConnection.setRequestProperty("User-Agent","NetFox"); Y:ldR String sProperty = "bytes="+nStartPos+"-"; `imWc"'Ej httpConnection.setRequestProperty("RANGE",sProperty); 0GDvwy D1 Utility.log(sProperty); m uW!xY I5AO?BzJ T<-=nX InputStream input = httpConnection.getInputStream(); ?4CNkk=v //logResponseHead(httpConnection); Cv)/7vyB8 q4UA]+-* >O/D!j| byte[] b = new byte[1024]; 39 Y(!q int nRead;
@>x pYV while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) zNSu { -;;Z 'NM;8 nStartPos += fileAccessI.write(b,0,nRead); i{^Z1;Yl //if(nThreadID == 1) ^O^:$nXhYy // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); h5kPn~ } /$"[k2 N QFPfIb/ Y`6rEA0 Utility.log("Thread " + nThreadID + " is over!"); L?Yoh< bDownOver = true; N:VX!w //nPos = fileAccessI.write (b,0,nRead); 3E^M?N2oc } T88Y
qI catch(Exception e){e.printStackTrace ();} QIB>rQCceo } IgL_5A } xKOq[d/8 CY?G*nS?iK zHfP+(ah //打印回应的头信息 v=I|O% public void logResponseHead(HttpURLConnection con) R)Mt(gFZT_ { Xl |1YX1&m for(int i=1;;i++) RE 3Z%;' { 2h
{q h String header=con.getHeaderFieldKey(i); E3/:.t if(header!=null) 9^F2$+T[: //responseHeaders.put(header,httpConnection.getHeaderField(header)); 8iC:xcN3 Utility.log(header+" : "+con.getHeaderField(header)); 2WvN2"f3 else w'7R4 break; m+$ @'TbP } MVCl.o } V+wH?H= E{Pgf8 !.5),2 public void splitterStop() MVv1.6c7Y { {}>n{_ bStop = true; pN[0YmY# } IO.<q,pP!_ o**y Z2 ! o,5h|\ } ]r]k-GZ$ S\NL+V?7h e yw'7 /* VY 1vXM3y **FileAccess.java qBk``!|s] *//文件访问(定位,写) oCi
~P}r package NetFox; CPazEe1S import java.io.*; S(eQ{rSs Ja^ 5?Ar| #6S75{rnW" public class FileAccessI implements Serializable{ -dTLunv ET^ |z //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 _q>SE1j+W= RandomAccessFile oSavedFile; K7vw3UwGN long nPos; Y\/gU8w/ |E/L.gdP7 7_KhV public FileAccessI() throws IOException %NHYW\sKX { N1--~e this("",0); u~ F;xQ } e5v`;(^M q<=:
>? &;q<M_< public FileAccessI(String sName,long nPos) throws IOException NSLVD[yT { iT)WR90 oSavedFile = new RandomAccessFile(sName,"rw"); q(z7~:+qNr this.nPos = nPos; eTE2J~\ oSavedFile.seek(nPos); MXAEX2xmme } &w~Xa( uu 73NZ:h%= FY;+PY@I{ public synchronized int write(byte[] b,int nStart,int nLen) >X Qv?5 { mU{4g`Iw int n = -1; Nofu7xiDw[ try{ ?H;{~n? oSavedFile.write(b,nStart,nLen); cHvF* A n = nLen; zDBD .5R; } :pKG\A catch(IOException e) o#i
]" { nf%4sIQ*x e.printStackTrace (); 7$T8&Mh } &&RA4 e 3@x*XI ij)Cm]4(2 return n; 7t(Y;4<2 } :
1)}Epo, ?s{C// _3^y|_! } I^0t2[M <DiOWi .5hp0L} /* 0'ZYO.y **SiteInfoBean.java mc@M ,2@D */ {K.rl%_|N package NetFox; {gkwOMW 2)LX^?7R /(6zsq'v| public class SiteInfoBean { Q)6va}2ai Kr3];(w{ CI^|k/ private String sSiteURL; //Site's URL B\<ydN private String sFilePath; //Saved File's Path a?<?5 private String sFileName; //Saved File's Name @!H
'+c private int nSplitter; //Count of Splited Downloading File %O) Z af>3V( 7 #vnT&FN0[ public SiteInfoBean() ?eWJa {//nSplitter的缺省值为5 C6k4g75U2 //default value of nSplitter is 5 ?n*fy this("","","",5); i!~>\r\6\ } 8 lS($@@{ {rGYRn, .ewZV9P)t public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Xem| o& { i:Mc(mW sSiteURL= sURL; lBiovT sFilePath = sPath; ep?:;98|t sFileName = sName; 0$Ff#8 this.nSplitter = nSpiltter; _g6wQdxT |zMqJ.qu jU$Y>S>l } m "]!I~jd AVpuMNd@ iSd?N}2,I public String getSSiteURL() m`9^.>]P { xii$e return sSiteURL; BvJ=iB<E } ONWO`XD =J.EH| 8t``NZ[ public void setSSiteURL(String value) %|?1B$s0 { !GN Xt4D sSiteURL = value; 1o#vhk/"+ } R~c1)[[E Jk*QcEE= Ao*FcrXN public String getSFilePath() A}4t9|/K6 { C"No5r'K3 return sFilePath; +!$dO'0nt, } @zs1>\J7 `E;)`J8b AQn[* public void setSFilePath(String value) E4m:1=Nd~] { .;Z.F7{q sFilePath = value; 5&%fkZ0 } j];G*-iv{ Kw*~W
i b A+[{ public String getSFileName() V85.DK! { yM17H\ = return sFileName; C38XQLC } `(T!>QVW+g 4
m$sJ SY8U"Qc;9 public void setSFileName(String value) R9E6uz.j { `t9.xB#Z sFileName = value; b6Xi } nk>8SW^ q(1r<2 _=T]PSauI public int getNSplitter() <[5#c*A { u2,H ]- return nSplitter; E@]sq A } ]W|RtdF3.N K Dz]wNf %%x0w^ public void setNSplitter(int nCount)
r4S=I { k) 3s? nSplitter = nCount; uf?b%:A } /sH0x,V } :5<#X8>d .J:;_4x #}j]XWy /* Av[Ud
*~ **Utility.java X=#It&m%s */ }(cY| package NetFox; w?/f Z x 5"e+& zU~f F%y{%
C7l public class Utility { QP<FCmt8 ?GfxBZWJ 1::LN(`< public Utility() K
/8qB~J* { J2=*-O: /6smVz@O A{t"M-< } Fi/jR0]e2 [{/$9k-aF? //线程睡眠 )ZeLaa P public static void sleep(int nSecond) 79a9L{gso { n8Q*
_?Z/ try{ p*!q}%U Thread.sleep(nSecond); <YSg~T } W`5a:"Vg catch(Exception e) oB3q AP { {[N?+ZJD*L e.printStackTrace (); cPm~`
Zd } >z5Oy } y78z>(jV h%/ssB //日志 #9INX`s- public static void log(String sMsg) k|l5 "&K~. { Qv\bLR System.err.println(sMsg); :` ;(p{ } !2wETs? VZIKjrKs uGM>C" public static void log(int sMsg) K^8@'#S { mUiOD$rO System.err.println(sMsg); 8Y7 @D$=w } srhFEmgN7) } !4_!J (q% ;i/"$K /jvOXS\M /* OoE9W **TestMethod.java <TL])@da */ G}s;JJax package NetFox; Q^vGj</u SC]6F* 7
s7}?l9 public class TestMethod { ,R8n,az l,^xX=, pAMo
XJ` public TestMethod() >2nF"?"= { ///xx/weblogic60b2_win.exe 7Onk!NH try{ 3V"dG1? SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); $m{{,&}k //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); OX`?<@6 SiteFileFetch fileFetch = new SiteFileFetch(bean); X1O65DMr`g fileFetch.start(); f>p; siR) } Q})t<l+L catch(Exception e){e.printStackTrace ();} }Z^FEd"y Zb}`sk# _dJp
3D } ys/`{:w8p gZ1N&/9; %bEGv:88s public static void main(String[] args) i_|h{JK) { *m iONc new TestMethod(); Pu1GCr( } >y&[BB7S6 } bJANZn|H 点击下载更多相关资料
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