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/* 896oz> **SiteFileFetch.java 8)
1+j>OQ */ oe*Y(T\G package NetFox; 27q=~R} import java.io.*; "Gh5
^$w?j import java.net.*; ql_GN[c/ uiQR RT G34fxhh public class SiteFileFetch extends Thread { Oj ?
|g_ *8?0vkZZ2 O${B)C, SiteInfoBean siteInfoBean = null; //文件信息Bean N,M[Opm long[] nStartPos; //开始位置 ~M!s0jT long[] nEndPos; //结束位置 ]= nM|e FileSplitterFetch[] fileSplitterFetch; //子线程对象 Sdn4y(&TP long nFileLength; //文件长度 Td"_To@jd boolean bFirst = true; //是否第一次取文件 7 _*k<W7| boolean bStop = false; //停止标志 ]> dCt< File tmpFile; //文件下载的临时信息 "ke>O' DataOutputStream output; //输出到文件的输出流 ;('(Yn7~ a(BEm_l3 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) y>YQx\mK public SiteFileFetch(SiteInfoBean bean) throws IOException Q"+)xj { [x\?._> siteInfoBean = bean; ,KyG^;Riy //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); gcKXda( tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >.X& v if(tmpFile.exists ()) ?\7$63gBH { i,z^#b7JQ bFirst = false; $63_*9 read_nPos(); aUTXg60l* } rMy(NAo_ else zs<2Ozv { d=v{3*a_4, nStartPos = new long[bean.getNSplitter()]; ?wpS nEndPos = new long[bean.getNSplitter()]; /3`(Ki{
Q } 8'}D/4MUr pDloew Ga
M:/. R@[gkj } .Fe_Z)i>h [W#M(`}D :3aZ_ public void run() Q eZg l! { S_ELV#X //获得文件长度 JsZLBq*lP //分割文件 9\J.AAk~/ //实例FileSplitterFetch P/e6b
.M //启动FileSplitterFetch线程 gXP)YN //等待子线程返回 aR0'$*3E try{ FT$Z8 if(bFirst) 7i@vj7K { Z|
f~
nFileLength = getFileSize(); A0f98?j^ if(nFileLength == -1) Uxl7O4J@H { p}:"@6 System.err.println("File Length is not known!"); {`>;I } lK0pr else if(nFileLength == -2) sJ
!<qb5 ! { .WV5Gf) System.err.println("File is not access!"); %c"t` } bnYd19> else LZ 3PQL { [42EqVR for(int i=0;i<nStartPos.length;i++) $YztLcn { r-aCa/4y! nStartPos = (long)(i*(nFileLength/nStartPos.length)); "k'P
#v{f } lc8zF5 for(int i=0;i<nEndPos.length-1;i++) 8EBy5X}US { dtDT^~ nEndPos = nStartPos[i+1]; zHu w[ } ' ] $mt nEndPos[nEndPos.length-1] = nFileLength; FIEA'kUy } OKO+(>AQ } |K,[[D<R snm1EPj u#^~([I //启动子线程 $FM:8^ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; A]_5O8<buW for(int i=0;i<nStartPos.length;i++) ~qu}<u)P { /ho7O/aAa fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;T,`m^@zf siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), A/A;'9 nStartPos,nEndPos,i); +{dJGPoY]p Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); E$1P H) fileSplitterFetch.start(); |ycN)zuE } H
b}(.` // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N6thbH@ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); z1vSt[s // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Y-fDYMm nEndPos = " + nFileLength); Y4j%K~lsY // fileSplitterFetch[nPos.length-1].start(); sG K7Uy hvo7T@*' u`~,`z^{n //等待子线程结束 L2}p<?f //int count = 0; n{8v^x //是否结束while循环 _p^&]eQ+k# boolean breakWhile = false; agUdPl$e\ .jK,6't^ >tQ$V<YB while(!bStop) 57`*5X { h(MNH6B1 write_nPos(); `\Ye:$q Utility.sleep(500); <Dq7^,}# breakWhile = true; {wwkbc* e.l3xwt>$ t}x^*I$* for(int i=0;i<nStartPos.length;i++) mVVL[z2+ { sOb=+u$$9 if(!fileSplitterFetch.bDownOver) 7:$zSj#y { &++tp5 breakWhile = false; qtYVX:M@, break; y D:}&!\} } ]7:*A7/!. } t=BXuFiu if(breakWhile) -hpC8YS break; )gPkL
r !'f.g|a ,%4~ulKMn //count++; W)p?cK` //if(count>4) <4,LTB]9- // siteStop(); g7@.Fa.u'! } 2{oU5e "^&Te%x_b ] GH_; System.err.println("文件下载结束!"); *h4x`luJ } E*G{V j catch(Exception e){e.printStackTrace ();} ]3&BLq } /P
koqA, fj:q_P67o D\-D~G]x //获得文件长度 >#EOCo public long getFileSize() +5xk6RP { I6lWB(H!u int nFileLength = -1; (>M?
iB try{ Gq0Q}[53 URL url = new URL(siteInfoBean.getSSiteURL()); CEl9/"0s6 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _4-UM2o; httpConnection.setRequestProperty("User-Agent","NetFox"); ;!Q}g19C s^zX9IVnp 3 Xl!Z^W int responseCode=httpConnection.getResponseCode(); :{'%I#k2 if(responseCode>=400) .X;DI<K { 7L !$hk processErrorCode(responseCode); ;+(EmD:Q return -2; //-2 represent access is error . g8db d } k#DMd9 mr<camL5 _,bDv`>Ra String sHeader; C<yjGtVD G-Dc(QhU& b 67l\L for(int i=1;;i++) l,@rB+u { #Zj3SfU~` //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); .ovG_O //Utility.log(in.readLine()); 4ZCD@C sHeader=httpConnection.getHeaderFieldKey(i); >&D}^TMYY if(sHeader!=null) Xcw6mpLt { V8-*dE if(sHeader.equals("Content-Length")) Q~zs]{\ { `FHKQS5 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); t*(buAx break; aM!%EaT }
"U o~fJ } BVe c else
Y"UB\_= break; u=f}t=3 } D V=xqC6} } |$G|M=*LN catch(IOException e){e.printStackTrace ();} =l+~}/7'Z catch(Exception e){e.printStackTrace ();} D0VbD" y 6`V~cVu d$#DXLA\P Utility.log(nFileLength); g\A kf SK t&BnW s_4y^w]aX return nFileLength; E:ti]$$ } ),5|Ves;t[ _0h)O &at>sQ' //保存下载信息(文件指针位置) ]%ey rbU private void write_nPos() %[WOQ.Sh { Bhg,P.7 try{ kX "*kD output = new DataOutputStream(new FileOutputStream(tmpFile)); ?G<.W[3 output.writeInt(nStartPos.length); HC(7,3 for(int i=0;i<nStartPos.length;i++) <Wa7$ h F { \Y^GA;AMQQ // output.writeLong(nPos); Ngw/H)<c output.writeLong(fileSplitterFetch.nStartPos); ~U+W4%f8 output.writeLong(fileSplitterFetch.nEndPos); e!oL!Zg } ]*TW%mY output.close(); |"i"8~/@< } 0@/C5 v catch(IOException e){e.printStackTrace ();} nNpXkI: catch(Exception e){e.printStackTrace ();} 'tn-o } UoOxGo g66x;2Q EWK?vs //读取保存的下载信息(文件指针位置) Zr|z!S?aSC private void read_nPos() &h'NC%"v { M~Ph/ try{ $VnPs!a DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); qc"PTv0q int nCount = input.readInt(); wuKr9W9Xa nStartPos = new long[nCount]; dLtmG:II nEndPos = new long[nCount]; M@<r8M]G for(int i=0;i<nStartPos.length;i++) bBgyLyg { {4YD_$4W nStartPos = input.readLong(); e {805^X} nEndPos = input.readLong(); X3R:^ff\ } DyM<aT input.close(); P0ZY;/e5h } DSL3+%KF# catch(IOException e){e.printStackTrace ();} Xz\ X 8I catch(Exception e){e.printStackTrace ();} Rv Uw,= } Wp(Rw4j KSQ*HO)5 Ws;X;7tS private void processErrorCode(int nErrorCode) 8 c5=Px2\ { +@qIDUiF3 System.err.println("Error Code : " + nErrorCode); D8\9nHUD` } 0;tu}]jnN >Y=qSg>Ik $/"QYSF //停止文件下载 _|wnmeL* public void siteStop() Eu2(#z 6eW { 04#<qd&ob@ bStop = true; Tl L\&n.$ for(int i=0;i<nStartPos.length;i++) j|%>NB ): fileSplitterFetch.splitterStop(); 4azqH;i lQ!(lPh ~ugH2jiB } >oL| nwn } VU;98 //负责部分文件的抓取 5`Y>!|
Ab **FileSplitterFetch.java {Lugdf' */ ?eDZ-u9) package NetFox; C=x70Y/ k|3hs('y| cQrXrij;! import java.io.*; 349BQ5ND import java.net.*; 9yWSlbPr] C@!bd+' m*vz public class FileSplitterFetch extends Thread { V<Co!2S Q=t_m(:0 oQK,#>rv String sURL; //File URL (je`sV long nStartPos; //File Snippet Start Position j9f[){m` long nEndPos; //File Snippet End Position 9gac7(2`) int nThreadID; //Thread's ID He1~27+99 boolean bDownOver = false; //Downing is over F0ylJ
/E boolean bStop = false; //Stop identical 5,9cD`WR^ FileAccessI fileAccessI = null; //File Access interface \]0+J =}'7}0M_= 2?kVbF public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException R{UZCFZ { Zx^R -9 this.sURL = sURL; cp2a @ this.nStartPos = nStart; *0x!C8*`Xe this.nEndPos = nEnd; =55V<VI nThreadID = id; e,
}{$HStZ fileAccessI = new FileAccessI(sName,nStartPos);//定位 d#|%h]
6 } G6p R?K+ V)]lca CPcB17! public void run() RmJ|g< { J~)JsAXAI while(nStartPos < nEndPos && !bStop) ^f9>tI{ { `$XgfMBf | {m/KD 'b_ ce7$#
# f try{ Q}|0 URL url = new URL(sURL); 8@r>`c HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !im%t9 httpConnection.setRequestProperty("User-Agent","NetFox"); wU-Cb<^ String sProperty = "bytes="+nStartPos+"-"; ?d_vD@+\ httpConnection.setRequestProperty("RANGE",sProperty); q@i.4>x Utility.log(sProperty); 6W9lKD_i /$^SiE+N ]l^"A~va InputStream input = httpConnection.getInputStream(); zqxN/H]z //logResponseHead(httpConnection); <SiJA`(7 Lw`}o` D uTvf[%EHW byte[] b = new byte[1024]; 0u
bf]Z int nRead; SK5__Ix while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) zvwv7JtB { :PNhX2F nStartPos += fileAccessI.write(b,0,nRead); vHN/~k# //if(nThreadID == 1) #g~]2x // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); zz #IY'dwT } FpZ5@ +de5y]1H,| .J?RaH{i Utility.log("Thread " + nThreadID + " is over!"); .&.L@CRH bDownOver = true; x\pygzQ/ //nPos = fileAccessI.write (b,0,nRead); :=\`P } d?><+!a catch(Exception e){e.printStackTrace ();} |nY+Nen7 } ~?B\+6<V } #J~xKyJi' $]MOAj"LH U04)XfO;] //打印回应的头信息 !,{-q)'D public void logResponseHead(HttpURLConnection con) -BH T'zq1S { \~.elKw<U for(int i=1;;i++) n<Ki.;-ZE { @%!Gj{ String header=con.getHeaderFieldKey(i); Y#FSU#a$< if(header!=null) z8
K#G%,: //responseHeaders.put(header,httpConnection.getHeaderField(header)); -^t&U]
g Utility.log(header+" : "+con.getHeaderField(header)); 06I(01M1 else 6>b'g
~I break; u zL|yxt } zLg_0r*h1 } g_?bWm4br ,irc=0M( JC9OL.Ob public void splitterStop() :@S=0|:j { 02C; bStop = true; A+VzpJ~ } ^+Njz{rpG z5W;-sCz J7k=5Fqej; } zwK$ q=-: le2 v"Y -l{ wB" /* h([qq<Lzs **FileAccess.java \3whM6tK *//文件访问(定位,写) 0gr#<( package NetFox; c[EG
cY={ import java.io.*; h8P_/.+g|V *-gmWATC6 RY*yj&?w[ public class FileAccessI implements Serializable{ e r"gPW `3.bux~ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 2G$-:4B RandomAccessFile oSavedFile; 9HAK long nPos; EHm:&w Z$S0X$q} B|S X?X public FileAccessI() throws IOException E#n:d9WA: { f0g&=k{OD this("",0); \8`^QgV`@ } kp*BAQ H}lbF0` aq8mD^j -& public FileAccessI(String sName,long nPos) throws IOException cd$,, { Q#Xa]A- oSavedFile = new RandomAccessFile(sName,"rw"); 94.M8 this.nPos = nPos; z_a7HCG2 oSavedFile.seek(nPos); i>;6Z s>S } C12y_E8Un Hzc^fC jxnb<!|?H@ public synchronized int write(byte[] b,int nStart,int nLen) r8!M8Sc { +N!/>w]n int n = -1; |sDp>.. try{ #uuNH( oSavedFile.write(b,nStart,nLen); #}xPOz7: n = nLen; rH[Eh8j, } A{Q~@1 catch(IOException e) #b{;)C fL { 1 w9Aoc e.printStackTrace (); i(kr#XsU } 42 Sk` (ce"ED`1 v9Ez0 :) return n; bM
$WU?Z } #4!6pMW(&7 0WAOA6
_x BF]+fs` } 7s1LK/R|u NjSjE_S2B8 Fprhu;h /* 6
i]B8Ziq{ **SiteInfoBean.java #^q@ra */ b!g8NG package NetFox; I)4NCjcCw m ,TYF 7,3v,N| public class SiteInfoBean { IF|%.%I$!U KT8]/T`U &qZ:"k private String sSiteURL; //Site's URL @fSqGsSk private String sFilePath; //Saved File's Path ,YmTx private String sFileName; //Saved File's Name )X-TJ+d private int nSplitter; //Count of Splited Downloading File mOx>p"n ">S.~'ds +6x:+9S public SiteInfoBean() ^os|yRzV*M {//nSplitter的缺省值为5 ow,=M%x"0 //default value of nSplitter is 5 +#ANc;2g this("","","",5); ;,:w%. } LzkwgcR U`ELd: D~ %h3HM public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) pw1&WP&?3 { {NV=k%MTmi sSiteURL= sURL; - Tr*G4 sFilePath = sPath; Q?W}]RW sFileName = sName; 1FmVx this.nSplitter = nSpiltter; 5K?%Eo72!= +)TOcxF% yy|F6Pq3` } AN-;*n<' @KC;"u'C R8R,!3 N public String getSSiteURL() <4P"1#nHQ+ { \+sP<'~M return sSiteURL; :KJZo,\ } N^K@$bs4^ Hsz).u '}
LAZQ" public void setSSiteURL(String value) e5fzV.' 5 { $9O%,U@ sSiteURL = value; :[7.YQ } GFtE0IQ L<TL6 _M7NL^B& public String getSFilePath() qW:\6aEG { &sJ%ur+G return sFilePath; d512Y[ R } z[ ml;? J2~oIe2!+ "+J[7p}`@ public void setSFilePath(String value) I%31MU9 { pwO
U6A! sFilePath = value; [\e2 ID; } G=%SMl>[ mmrz:_ >vY5%%} public String getSFileName() j
/=4f { .[4Dvt|>6 return sFileName; F^|4nBd*ub } au 5qbP >0qe*4n|M xiG_l-2l public void setSFileName(String value) 96
!e:TU { -|~tZuf sFileName = value; \4|o5, +(@ } }H<87zH |VD}: )$e_CJ}9e public int getNSplitter() 7cJh^M { w(Hio-l= return nSplitter; 42mZ.,< } uKocEWB=/F H '(Ky Bys _8x} public void setNSplitter(int nCount) <rpXhcR { \zPcnDB nSplitter = nCount; /{d5$(Y" } ==pGRauq } 1#<KZN =$ VaRP+J}UA. N/&t)7 /* 41V}6+$g **Utility.java +Qe"O0 */ Iz[ T.$9 package NetFox; THbV],RhJ q!P{a^Fnc qKd&d public class Utility { @"=wn:O+ Lk~aMbw# }\Mmp+< public Utility() >'X[*:Cx { o|BEY3| To"J>:l
hO@VYO } 7D%}(pX ayQB@2% //线程睡眠 ;K9rE3
public static void sleep(int nSecond) 1Xi.OGl { zn@yt%PCV try{ +(|6Wv Thread.sleep(nSecond); JxM[LvVi } cc^ [u+ catch(Exception e) $m-rn'Q { h!L6NS_Q, e.printStackTrace (); zU)Ib<$ } 4D-4BxN* } H_CX5=Nq^ nmZJ%n //日志 y`OL^D4 public static void log(String sMsg) nwm1YPs%v] { )6
_+ System.err.println(sMsg); 4/tp-dBip } PV_q=70%T w_hGWpm oG_-a(N public static void log(int sMsg) xiW;Y{kZ { s;;"^5B. System.err.println(sMsg); T$ )dc^ } _v9P0W^.7 } ZRd,V~iz V@"Y"}4n4 Z1gZn)7 /* =7U_ jDME **TestMethod.java VTt{0 ~ */ QP{V package NetFox; +$F_7Hx ny]R,D0 ,9C~%c0Pw public class TestMethod { C<.Ny,U "/zIsn7 =#"ZO public TestMethod() `bdCom { ///xx/weblogic60b2_win.exe Dr!g$,9 try{ ?U`~,oI0 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); RN%*3{- //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); s@ ~Y!A SiteFileFetch fileFetch = new SiteFileFetch(bean); *"pf3x6 fileFetch.start();
#H@rb } H?(I-vO catch(Exception e){e.printStackTrace ();} &7 YTz3aj W_E0+
{|kEGq~aE } o=1M<dL 6?3f+=e"~! z[I3k public static void main(String[] args) `;9Z?]}` { 1 %nE new TestMethod(); FesXY856E } jd]YKaI } x]Nk T 点击下载更多相关资料
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