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/* GlOSCJZ **SiteFileFetch.java ^Z>Nbzr{ */ gWGh:.*T package NetFox; W @]t import java.io.*; 8#ZF<BY import java.net.*; ..fbRt PLueH/gC . i`7(5L~` public class SiteFileFetch extends Thread { v\G+t2{ K9tr Iy$v VUUE2k;^ SiteInfoBean siteInfoBean = null; //文件信息Bean o^3X5})sv long[] nStartPos; //开始位置 v/GZByco> long[] nEndPos; //结束位置 1EHL8@.M FileSplitterFetch[] fileSplitterFetch; //子线程对象 "KKw\i long nFileLength; //文件长度 O"ebrv boolean bFirst = true; //是否第一次取文件 >|rU*+I` boolean bStop = false; //停止标志 V'8Rz#Gc5 File tmpFile; //文件下载的临时信息 7m.>2U DataOutputStream output; //输出到文件的输出流 3{{Ew}kZm oC~+K@S //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) VT2f\d[Q public SiteFileFetch(SiteInfoBean bean) throws IOException mIW/x/I { pC/13|I siteInfoBean = bean; aXgngwq //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); .YlhK=d4 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); _W if(tmpFile.exists ()) oqa8v6yG' { 0]Qk *u< bFirst = false; 7srq~;j3 read_nPos(); gXvE^fE } HXb_k1n else R*l3 zn> { 1'!%$D nStartPos = new long[bean.getNSplitter()]; Lk]W? nEndPos = new long[bean.getNSplitter()]; 6FFM-9*|[ } %fIYWu`X )?<V-,D FyWrb+_0v B&"c:)1
C2 } .W51Cup@& ;$g?W" Sv\399( public void run() )ml#2XP!f { @y/!`Ziw //获得文件长度 'B;n&tJ
//分割文件 Wg=q lux- //实例FileSplitterFetch giHqc7-PaX //启动FileSplitterFetch线程 * zc[t //等待子线程返回 <N8z<o4rku try{ F13vc~$Ky if(bFirst) ?D+H2[n\a
{ w^^8*b< nFileLength = getFileSize(); srryVqgS if(nFileLength == -1) ]VoJ7LoCZ' { "J{A}g[ System.err.println("File Length is not known!"); [8'^" } zsr; 37 else if(nFileLength == -2) >9,LN;Ic { ,0aRHy_^ System.err.println("File is not access!"); /pL'G` } jJV1 /]TJ else D77s3AyHK { "eIE5h for(int i=0;i<nStartPos.length;i++) SedVp cb+ { +R',$YzD nStartPos = (long)(i*(nFileLength/nStartPos.length)); ^+O97<#6C } XBm ^7' for(int i=0;i<nEndPos.length-1;i++) =}%Q}aPp { y]}N[l nEndPos = nStartPos[i+1]; $msf~M* } 5s:g(gy3BR nEndPos[nEndPos.length-1] = nFileLength; -Yg?@yt } [tkP2%1 } BFQ`Ab+ QB#_Wn +wcif- //启动子线程 Xb.#
=R fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; (!% w for(int i=0;i<nStartPos.length;i++) ]RxWypA` { T/?C_i fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3il/{bgM siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), B:6VD /qC nStartPos,nEndPos,i); 0,wmEV!) Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); XnB-1{a1 fileSplitterFetch.start(); 1"No~/_ } I+rLKGZC // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), H^JFPvEc siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); KeWIC,kq // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Ee^>Q*wahw nEndPos = " + nFileLength); jZ0/@zOf // fileSplitterFetch[nPos.length-1].start(); x\!vr. =a 6e*f IZ@M
K //等待子线程结束 #kp+e)F //int count = 0; o`.5NUn //是否结束while循环 %$F_oO7" boolean breakWhile = false; Bp/25jy #zg"E< <tv"I-2 while(!bStop) S"%W^)mZ { 3-gy)5.xe write_nPos(); r#w.yg4EX Utility.sleep(500); 0}q*s! breakWhile = true; @;Xa&* cG!dMab( c3N,P<# for(int i=0;i<nStartPos.length;i++) R) J/z { Xz"xp8Hc(6 if(!fileSplitterFetch.bDownOver) 2U) 0k* { U98e=57N breakWhile = false; [s F/sa3 break; Hd{@e6S } V eLGxc } iZ 9ed]mf if(breakWhile) 0W ,.1J2* break; ddEV@2F T&->xef= S6{u(=H //count++; Dyh|F\T //if(count>4) ?pV!`vp^{ // siteStop(); yUvn h } 0A F}wz> -_irkpdC[ qP72JxT System.err.println("文件下载结束!"); 3ZhuC".c } I~ e,'] catch(Exception e){e.printStackTrace ();} b5W(}ka+ } X{P=2h#g
!f G}<6&i .QB)Y* z //获得文件长度 8UXtIuQ public long getFileSize()
M 9KoQS { HJ;!'@ int nFileLength = -1; VVk8z6W try{ MGsY3~!K URL url = new URL(siteInfoBean.getSSiteURL()); S&NWZ:E3[ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); newURb,-! httpConnection.setRequestProperty("User-Agent","NetFox"); &e99P{\D !rff/0/x" 40%<E int responseCode=httpConnection.getResponseCode(); j7b 4wH\# if(responseCode>=400) Xn%O .yM6 { {=9"WN processErrorCode(responseCode); (1Klj+"p% return -2; //-2 represent access is error ->2m/d4a } 7,FhKTV1/ 9/dADJe0b e,T^8_> String sHeader; 6b\JD.r*{ 4oN*J +"=+ :i*
=s}cv for(int i=1;;i++) ; - 8] { $tDM
U3,W //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); yw*|
H T //Utility.log(in.readLine()); Y/y`c-VO sHeader=httpConnection.getHeaderFieldKey(i); z|O3pQn~ if(sHeader!=null) yo
:63CPP { F-GH?sfvi if(sHeader.equals("Content-Length")) [m(n-MuF { 6@Ir|o nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); B4x@{rtER break; d bHxc@H } L4v26*P } J6Nhpzp else a'?V:3 ] break; !H~PF*,hY } bOD]`*q } hZ-?-F?*@ catch(IOException e){e.printStackTrace ();} sU"sd7#A catch(Exception e){e.printStackTrace ();} ~$m:j]; l{hO"fzy ISg-?h/ Utility.log(nFileLength); EC7)M}H kn}bb*eZ D(#6H~QN% return nFileLength; VUzRA"DP| } K,dEa<p G x{G}9 h=dFSK?*D //保存下载信息(文件指针位置) ? s[!JeUA private void write_nPos() rbI 7
3' { (BIg try{ TsY
nsLQY output = new DataOutputStream(new FileOutputStream(tmpFile)); |J:m{ output.writeInt(nStartPos.length); r)oR`\7 for(int i=0;i<nStartPos.length;i++) BF /4 { -V=,x3Zew // output.writeLong(nPos); r}-vOPn`E output.writeLong(fileSplitterFetch.nStartPos); smHQ'4x9 output.writeLong(fileSplitterFetch.nEndPos); 1Sd<cOEd } pI(
H7 ( output.close(); - @t L]] } ;OSEMgB1 catch(IOException e){e.printStackTrace ();} 7AQv4 catch(Exception e){e.printStackTrace ();} 15R:m:T } WP
!u3\91 Bs^p!4=
(1)b> 6 //读取保存的下载信息(文件指针位置) lF~!F<^9 private void read_nPos() R/l/GNm { hI,+J> try{ Vsd4; DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); =h[;'v{ int nCount = input.readInt(); ?gG%FzfQ/ nStartPos = new long[nCount]; $'COsiK7 nEndPos = new long[nCount]; R{q<V uN for(int i=0;i<nStartPos.length;i++) wQojmmQ { (/A
6kp? nStartPos = input.readLong(); `_(N(dm nEndPos = input.readLong(); gQuU_dbXSB } (8Te{K h' input.close(); Gk!CU"`sP } pd.5 catch(IOException e){e.printStackTrace ();} bpdluWS+ ) catch(Exception e){e.printStackTrace ();} rN`-ak } e5m]mzF@ =4K:l}} kg^5D3!2{Q private void processErrorCode(int nErrorCode) M\r=i>(cu { i: 7cdhz System.err.println("Error Code : " + nErrorCode); Xw&vi\*m } QsyM[; \j: $>hH{ ORFi0gFbA //停止文件下载 jm,:jkr public void siteStop() :b<< { 0iVeM!bM bStop = true; }[]1`2qD for(int i=0;i<nStartPos.length;i++) &;%,Axc fileSplitterFetch.splitterStop(); sn8r`59C C5=m~ g&X
X@I8+v } =m
U</ F) } )5w# n1 //负责部分文件的抓取 kcE86Y=|x! **FileSplitterFetch.java .B{:<;sa */ f9^MLb6) package NetFox; z;\,Dt jV(b?r)eT{ D{M&>. import java.io.*; +Oc |Oo import java.net.*; xOKf| OhTd>~R`< GP_%.fO\M public class FileSplitterFetch extends Thread { ;9hS_%ldX4 __[bKd. _m3#g1m{ String sURL; //File URL % E8s>D long nStartPos; //File Snippet Start Position V@\A<q%jTs long nEndPos; //File Snippet End Position 9a]h;r8,9z int nThreadID; //Thread's ID O[z-K K< boolean bDownOver = false; //Downing is over 3#Xv))w1 boolean bStop = false; //Stop identical #ib?6=sPC FileAccessI fileAccessI = null; //File Access interface cCq mrjUmV G1ED=N_# jk1mP6'P| public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException x{1S!A^ { tW%!|T5/ this.sURL = sURL; 6{H@VF<QY! this.nStartPos = nStart;
MsP`w3b this.nEndPos = nEnd; S&MF; E6 nThreadID = id; bH.f4-.u>) fileAccessI = new FileAccessI(sName,nStartPos);//定位 fn Pej?f: } M^0^l9w i?6#>;f Sb?HRoe_ public void run() .ViOf){U\ { =Iy khrS while(nStartPos < nEndPos && !bStop) XT{ukEvDR { Mi7LyIu 2]+f<Z[/ !~te&ccPE try{ .{"wliC2 URL url = new URL(sURL); D}nIF7r2N HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); "(vm0@8>< httpConnection.setRequestProperty("User-Agent","NetFox"); VIuzBmR|\ String sProperty = "bytes="+nStartPos+"-"; .`/6[Zp httpConnection.setRequestProperty("RANGE",sProperty); U^&y*gX1 Utility.log(sProperty); '(SqHP|8&g \{a 64 )uy2,`z InputStream input = httpConnection.getInputStream(); y@Ak_]{b //logResponseHead(httpConnection); 2(25IYMS8 ABU~V+'2 Qp~3DUM byte[] b = new byte[1024]; B0m2SUC,H int nRead; &cT@MV5 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) (`&E^t { "$ep=h+ nStartPos += fileAccessI.write(b,0,nRead); }=s64O9j //if(nThreadID == 1) \)2~oN // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); lj@ibA] } kw5`KfG9 Dj'+,{7,u @H8CU!J
Utility.log("Thread " + nThreadID + " is over!"); U\(T<WX, bDownOver = true; =o_zsDv //nPos = fileAccessI.write (b,0,nRead); zUz j
F } %dq|)r catch(Exception e){e.printStackTrace ();} *q0vp^? } T49^ } 5`{u! QE xkfW^r #BhcW"@ //打印回应的头信息 E/3<8cV public void logResponseHead(HttpURLConnection con) u*8x.UE8C0 { /`b`ai8`8 for(int i=1;;i++) PbY=?>0 z { \Z$MH`_nu String header=con.getHeaderFieldKey(i); 1_5]3+r_U- if(header!=null) b}Wm-]|+ //responseHeaders.put(header,httpConnection.getHeaderField(header)); XW BTBL Utility.log(header+" : "+con.getHeaderField(header)); 4[
=C,5r else ^%}PRl9 break; G(MLq"R6U } ApqNV } diD[/&k#kh $DhW=(YM_a {@
Z%6%'9 public void splitterStop() *&$2us0%% { b2UqN]{ bStop = true; JjnWv7W3$ } >JT^[i8[ QI6=[
%)P)Xb } <L:}u! v6O5n(5,, 'rSJ9Mw"x /* [k
**FileAccess.java nD#uOep9 *//文件访问(定位,写) _TjRvILC package NetFox; G!g];7PG( import java.io.*; `_ )5K u} A9ZK :i7 / e]R0NI public class FileAccessI implements Serializable{ :p.f zL6X V7$-4%NL //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 c!J|vRA5 RandomAccessFile oSavedFile; -Rj3cx long nPos; F tay8m@f koy0A/\% -5<G^AS public FileAccessI() throws IOException ?T_bjALW { +"JQ5~7 this("",0); 8W}rSv+ } Hzojv<c IS%e5 A\QrawBp0l public FileAccessI(String sName,long nPos) throws IOException =$WDB=i { 7x)32f" oSavedFile = new RandomAccessFile(sName,"rw"); X oh@ (% this.nPos = nPos; $fQ'q3 oSavedFile.seek(nPos); =7Sw29u< } k;pU8y6Y {/K!cPp9 gv/yfiA? public synchronized int write(byte[] b,int nStart,int nLen) RKwuvVI { e/F+Tf int n = -1; zd?uMq;w try{ )KcY<K oSavedFile.write(b,nStart,nLen); Zr$D\(hX n = nLen; /[UuHU5*R } #gRtCoew catch(IOException e) .MW/XnCYs4 { ]QmY`pTB` e.printStackTrace (); 1owe'7\J } Ct386j>< 884 -\M"h ms/Q- return n; ~uh,R-Q$ }
>^Y)@J h#]LXs \\$wg } K"g`,G6S JVh/<A !=(M P: /* .
/~# **SiteInfoBean.java qaEWK0 */ js)I%Z package NetFox; {z7kW@c a'B 5m]% ./Wi(p{F public class SiteInfoBean { <*5` TE0J yI8
/m| Tizjh&*^ private String sSiteURL; //Site's URL T*zy^we private String sFilePath; //Saved File's Path yrV]I(Xe private String sFileName; //Saved File's Name bXK$H=S Bz private int nSplitter; //Count of Splited Downloading File 2hE+Om^n K]yUPx KAm$^N5 public SiteInfoBean() x*0mmlCb {//nSplitter的缺省值为5 0j2M< W# //default value of nSplitter is 5 lv\^@9r this("","","",5); 'cvc\=p } 6|ENDd[ l&6+ykQ tk'3Q 1L public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) G?v]|wdI { q{RT~,% sSiteURL= sURL; o3>D~9 sFilePath = sPath; CUa`# sFileName = sName; 6cbIs_g this.nSplitter = nSpiltter; -mqTlXM CB>O%m[1 DK }1T } 02~GT_)$^ N="H
06t MI*@^{G public String getSSiteURL() T.iVY5^< { BxHfL8$1[$ return sSiteURL; mY/x|)MmM } #GA6vJ4^s H"%SzU ~6Df~uN public void setSSiteURL(String value) vAo|o* { @BS7Gyw sSiteURL = value;
6+x>g } .DZ8kKY y2NVx!?n Dp"
xO<PE2 public String getSFilePath() eHHqm^1z { (vr
v-4 return sFilePath; C}cYG } zqAp7: F)4;:".zna S9@)4|3C|p public void setSFilePath(String value) h,)UB1 { n%}Vd
`c sFilePath = value; _,5) } ?)'+l =%$BFg1a( p_l.a public String getSFileName() bAm ,gP { Y lEV@ return sFileName; `KzNBH,W } C9}m-N rdQ'#}Ix h?`'%m?_b public void setSFileName(String value) "ba>.h,#' {
Xw{Qktn sFileName = value; %[7<GcWl } WbDD9ZS EJZb3 L$<(HQQJ8 public int getNSplitter() g;PZ$|%&s> { +q@g return nSplitter; C4/p5J } 34Z$a{
w 8f{;oO \' ;zD-MX public void setNSplitter(int nCount) GJIM^ { gCc::[}\Y nSplitter = nCount; FV W&)-I } S#l6=zI7^R } 0xe*\CAo lpHz*NZ0 u&s>UkR /* GK-__Y. **Utility.java SYmiDR */ k>dzeH package NetFox; )A H)*Mg 2%zJI"Ic 2v9T&xo= public class Utility { cpg+-Zf% Af{K#R8! !$|h[ct public Utility() ;L.RfP"5< { !w-`:d? YR}
P; @&LtIN# } -Rz%<` biw2f~V //线程睡眠 g_F-PT>($ public static void sleep(int nSecond)
*^b<CZd9 { ;fnE"} try{ "=ogO/_Q" Thread.sleep(nSecond); li~#6$ } { WW!P,w catch(Exception e) 3D/<R|p { FR9*WI
e.printStackTrace (); U6Ws#e } <>|/U ` } &H<n76G T)"LuC#C //日志 mbh;oX+ public static void log(String sMsg) o$,Dh?l { <fm0B3i? System.err.println(sMsg); ]iL>Zxex } *dE5yS`H :UdH}u!Ek YoEL|r| public static void log(int sMsg) L-\o zp { 1ZK~i System.err.println(sMsg); BPkqC >w } `lA[-x~ } / %:%la% 5EqC.g. .8K ~ h /* ~\~K,v **TestMethod.java mrvPzoF,] */ V)g{ Ew]: package NetFox; 9?~K"+-SI s$ v<p(yl "P_PqM public class TestMethod { G)'(%rl ;$= GrR 2%F!aeX public TestMethod() N)H
_4L { ///xx/weblogic60b2_win.exe ek3,ss3 try{ ^w*$qzESy SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ehCZhi~ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); uk)6% SiteFileFetch fileFetch = new SiteFileFetch(bean); =u^{Jvl[ fileFetch.start(); Sd0y=!Pj= } v%6mH6V catch(Exception e){e.printStackTrace ();} g Q@fe3[ [hT|]|fJS; o/Cu^[an } -WX{y Ci ?6[X=GeUs L% cr `<~ public static void main(String[] args) nB+ e2e& { OG&X7>'3I{ new TestMethod(); .oR_r1\y } `LID*uD;_ } R?K[O
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