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/* 57U%` **SiteFileFetch.java p zg&/m&F` */ xo(k?+P>. package NetFox; >{QdMn import java.io.*; +lKrj\Xj import java.net.*; X($6IL6m Ae6("Oid [.a;L"> public class SiteFileFetch extends Thread { v~}5u
5$O FZpsL-yx^N rCE;'? Y SiteInfoBean siteInfoBean = null; //文件信息Bean t=i/xG: 5 long[] nStartPos; //开始位置 OTE<x"=h long[] nEndPos; //结束位置 ywEDy|Wn$~ FileSplitterFetch[] fileSplitterFetch; //子线程对象 Mb/L~gd" long nFileLength; //文件长度 "7d.i(vw boolean bFirst = true; //是否第一次取文件 6|^0_6_ boolean bStop = false; //停止标志 AFm,CINa File tmpFile; //文件下载的临时信息 =-qf ;5[| DataOutputStream output; //输出到文件的输出流 y@`~ 9$ Pcdf$a"` //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) jN6b*-2
public SiteFileFetch(SiteInfoBean bean) throws IOException "J!}3)n { Oqmg;\pm siteInfoBean = bean; 5%P[^} //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); \vVSh tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); .'/l'> if(tmpFile.exists ()) ?+Q$#pb { _88QgThb bFirst = false; {5-zyE read_nPos(); D%U:!|G } f05=Mc&) else &K
*X)DAs { 4\6:\ nStartPos = new long[bean.getNSplitter()]; sa9fK Z'q nEndPos = new long[bean.getNSplitter()]; !| xZ6KV } E:w:4[neh Sl>>SP W2eAhz& A,BEKjR~J } "OL~ul5 .45^=2NGmQ J>%t<xYf4 public void run() @Tr&`Hi {
HE;V zR //获得文件长度 <GF @L //分割文件 o@/xPo| //实例FileSplitterFetch %!y89x=E //启动FileSplitterFetch线程 p7C!G1+z //等待子线程返回 3wC
R|ab} try{ \zu}\{ if(bFirst) xmr|'}Pt[ { U-EhPAB@ nFileLength = getFileSize(); ((|IS[ if(nFileLength == -1) })[($$f/ { K\&o2lo] System.err.println("File Length is not known!"); p<5!02yQ\ } xU}M;4kH~ else if(nFileLength == -2) hCC}d0gf`n { kH?#B%N5 System.err.println("File is not access!"); P`TIaP9%E } [w+Q^\%bN else )~
z Z'^ { S&?7K-F>_o for(int i=0;i<nStartPos.length;i++) n"G`b { m^I,}1H4 nStartPos = (long)(i*(nFileLength/nStartPos.length)); jGD%r~lN } G{RTH_p for(int i=0;i<nEndPos.length-1;i++) 6>DLp}d { ]V<-J nEndPos = nStartPos[i+1]; ssl&5AS } n &}s-`D
nEndPos[nEndPos.length-1] = nFileLength; \%5MAQS } Y=2Un).& } q`Q}yE>9 "&QH6B1U6H $|a;~m> //启动子线程 ^8K/xo- fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; <1@
(ioPH for(int i=0;i<nStartPos.length;i++) u~F~cDu { S%l:kKD fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), @Zm Jz siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ndi+xaQtG nStartPos,nEndPos,i); j*zD0I] Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); kMxjS^fr fileSplitterFetch.start(); -MfQ&U } {gU&%j // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2]ti!< siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); pbn\9C/ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", [,g~m9 nEndPos = " + nFileLength); tcL2J . // fileSplitterFetch[nPos.length-1].start(); W3JF5* YYUe)j{T S>f&6ZDNY( //等待子线程结束 ]J@/p:S> //int count = 0; *jCW.ZLY //是否结束while循环 44-r\> boolean breakWhile = false; WzlC*iv '6S %9ahE l[YEKg while(!bStop) C1fyV] { PC/!9s0W write_nPos(); c K <)$* Utility.sleep(500); -:`V< breakWhile = true; u#jC#u^M `}8&E(< t9u|iTY
f! for(int i=0;i<nStartPos.length;i++) Ade}g' { xPC"c* if(!fileSplitterFetch.bDownOver) #n7Yr,|Z { >D_F!_ breakWhile = false; z<n-Gzwk break; &<1`O } V4K'R2t } 2\@Z5m3B if(breakWhile) bFGDgwe z break; hbfq]v*X [Z<Z;=t x';uCKWV //count++; |g_g8[@`} //if(count>4) OO-k|\{| // siteStop(); qd6fU^)i } 9& 2wlKBSON *'8Ln tZf System.err.println("文件下载结束!"); v 1+U;Th>g } p>kq+mP2bc catch(Exception e){e.printStackTrace ();} 8r:M*25 } Yl({)qK{ z2 hFn& -9+se //获得文件长度 ,=PKd& public long getFileSize() $c9k*3{<+A { r"wtZ]69 int nFileLength = -1; tP(h9|[N try{ 1ThqqB URL url = new URL(siteInfoBean.getSSiteURL()); Vxdp| HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0A[e sWmP httpConnection.setRequestProperty("User-Agent","NetFox"); K-Mc6 ;Yts\4BSM Lp&k3?W int responseCode=httpConnection.getResponseCode(); wL{qD if(responseCode>=400) ejePDgi_[ { cxP&^,~ processErrorCode(responseCode); zG9|K return -2; //-2 represent access is error X?Pl<l& } HuI`#.MpWE 1wn&js C [r-}bp'Gp String sHeader; 07_oP(;jT MDO$m g J"CJYuGW, for(int i=1;;i++) jai|/"HSXw { }iiHr|l3 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ocQWQ //Utility.log(in.readLine()); eV!L^>>> sHeader=httpConnection.getHeaderFieldKey(i); gNj7@bX~ if(sHeader!=null) i*[n{=*l@ { yfj(Q s if(sHeader.equals("Content-Length")) ZI13 { \~DM nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); _GA$6#] break; +RDJY(Y$ } }*wLEa } hv)8K'u else -4 Ux,9& break; ,T5u'"; } ~}ovuf=% } 4g` jd catch(IOException e){e.printStackTrace ();} 4_=Ja2v8;` catch(Exception e){e.printStackTrace ();} OI/@3"L{ `:|@Zln yI;"9G Utility.log(nFileLength); ?u$u?j|N grom\ +}kgQ^ return nFileLength; ^4>k%d } p3x?[Ww N/F$bv WI[:-cv //保存下载信息(文件指针位置) u?H 2%hD private void write_nPos() g.DLfwI| { a:Q[gF8> try{ kdrod [S output = new DataOutputStream(new FileOutputStream(tmpFile)); t;q7t!sC] output.writeInt(nStartPos.length); 9U_ks[Qa for(int i=0;i<nStartPos.length;i++) E1V^}dn { IyUdZ,ba // output.writeLong(nPos); JAb6 zpP output.writeLong(fileSplitterFetch.nStartPos); LF<wt2?* output.writeLong(fileSplitterFetch.nEndPos); &9[P-w;7u } Y%`SHe7M output.close(); Ud%s^A-qS } @tT-JwU catch(IOException e){e.printStackTrace ();} hlbvt-C?}" catch(Exception e){e.printStackTrace ();} ^rAa"p 9 } X ]j)+DX> c-1q2y ;O#g"8 //读取保存的下载信息(文件指针位置) #;VA5<M8 private void read_nPos() MN8H;0g- { J>0b1 try{ ~Qj}ijWD DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); P Ru&3BP int nCount = input.readInt(); @tUoD>f nStartPos = new long[nCount]; 8F5|EpB9M nEndPos = new long[nCount]; Gpj* V|J for(int i=0;i<nStartPos.length;i++) 8G^<[`.@j { 5p"BD'^: nStartPos = input.readLong(); \.{AAj^qD nEndPos = input.readLong(); wFS2P+e;X } v1G"3fy9 input.close(); }(FPV*mS } P87#
CAN catch(IOException e){e.printStackTrace ();} K7TzF& catch(Exception e){e.printStackTrace ();} VDF)zA1V } wVl+]zB -%c<IX>z9 #$ thPZ private void processErrorCode(int nErrorCode) %ati7{2! { K!z` System.err.println("Error Code : " + nErrorCode); cDEJk?3+ } nA7M8HB R3.*dqo$ {d3<W N //停止文件下载 8AFczeg[[ public void siteStop() g(x9S'H3l { 1eS_
nLFw~ bStop = true; dR^"X3$ for(int i=0;i<nStartPos.length;i++) %D}H|*IPu fileSplitterFetch.splitterStop(); .N m su+s 3.Gj4/f '\q f^?9 } l{c]p- } &K+0xnUH //负责部分文件的抓取 2{,n_w?Wy **FileSplitterFetch.java +_l^ #?o, */ jvy$t$az package NetFox; nR;D#"p% U977#MXf e 8\;t"D import java.io.*; `\u;K9S6 import java.net.*; Y]|:?G7l] ecJ6 F/c$v public class FileSplitterFetch extends Thread { TtD@'QXq `Nh" eJCjJ) String sURL; //File URL 0U/,aHvhP long nStartPos; //File Snippet Start Position sM[I4.A3 long nEndPos; //File Snippet End Position |]=2 }%1w int nThreadID; //Thread's ID P(k(m<0 boolean bDownOver = false; //Downing is over -Y 9SngxM boolean bStop = false; //Stop identical ykg# {9+ FileAccessI fileAccessI = null; //File Access interface BG&cQr vl Ez9/H HmmS(fU public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException hg@}@Wq\) { T\s)le this.sURL = sURL; qSCv )S( this.nStartPos = nStart; V&]DzjT/ this.nEndPos = nEnd; YV4#%I!< nThreadID = id; f$HH:^# fileAccessI = new FileAccessI(sName,nStartPos);//定位 qm*}U3K } 0H_!Kg `fXyWrz-k 3-Dt[0%{ public void run() _Us*+
2(4L { 9Mp$8-=>7 while(nStartPos < nEndPos && !bStop) AwUi+|7r]) { #%@*p,xh ,6^znOt RR;AJ8wd try{ ma$Prd URL url = new URL(sURL); @Y,7'0U HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); OYC_;CP httpConnection.setRequestProperty("User-Agent","NetFox"); iTh:N2/-vc String sProperty = "bytes="+nStartPos+"-"; e(F42;$$ httpConnection.setRequestProperty("RANGE",sProperty); }U w&Ny Utility.log(sProperty); jDM
w2#< )&{K~i ;: 5F|8?BkOL^ InputStream input = httpConnection.getInputStream(); x_!0.SU //logResponseHead(httpConnection); 6&Juv ]{~NO{0@Y U!%!m' byte[] b = new byte[1024]; ;< )~Y- int nRead; !
Z`0(d while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) juF{}J2 { + 1IQYa| nStartPos += fileAccessI.write(b,0,nRead); EVX{ 7% //if(nThreadID == 1) E@05e // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); PfS:AIy } Zc
|/{$>:W Rd7_~.Bo '1fNBH2 Utility.log("Thread " + nThreadID + " is over!"); $GQ`clj< bDownOver = true; [+*$\ //nPos = fileAccessI.write (b,0,nRead); WnUweSdW } X0;4_,= catch(Exception e){e.printStackTrace ();} $P7iRM] } '$As<LOEd/ } SjjIr ^ 3($"q]Y 'Djm0 //打印回应的头信息 bb42v7? public void logResponseHead(HttpURLConnection con) e6X[vc|Y} { 8By,#T". for(int i=1;;i++) .I VlEG0 { ?.c;oS| String header=con.getHeaderFieldKey(i); E+"dqSI/v if(header!=null) < _$%@4 L //responseHeaders.put(header,httpConnection.getHeaderField(header)); 5F t5@UF~ Utility.log(header+" : "+con.getHeaderField(header)); 5G0$ else r!P}u break; FG3UZVUg9 } #zrTY9m7 } w#JJXXQI wi8Yl1p]!z ]%uZ\Q;9p public void splitterStop() U7xmC { LAx4Xp/ bStop = true; t:JI!DR } Z=4{Vv* V Km!Ri$ Gc.P,K/hr } G5dO 3lwq OI}
&m^IOo (qn2xrV /* <]C$xp<2 **FileAccess.java Kx"<J@ *//文件访问(定位,写) FtufuL?JS package NetFox; <?D[9Mk$ import java.io.*; wn>edn L.xZ_ 6 =S[yE]v^ public class FileAccessI implements Serializable{ E^_wI> Ae^X35 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 /$n ~lf RandomAccessFile oSavedFile; DlMe5=n-u long nPos; #{r#;+ t3Z_Dp~\ b1pQ`qt public FileAccessI() throws IOException 9/ SXs0 { J" j.'. this("",0); pqvOJ#?Q}= } lcON+j B)$c|dUV . .QB~ public FileAccessI(String sName,long nPos) throws IOException #8{F9w<Rf { ,3v+PIcMM+ oSavedFile = new RandomAccessFile(sName,"rw"); N_4eM,7t this.nPos = nPos; s57N) 0kP oSavedFile.seek(nPos); QQk{\PV } IUGz =%[ NRnRMY- Z'pQ^MO public synchronized int write(byte[] b,int nStart,int nLen) -3Avs9`5 { , xx6$uZ int n = -1; q,<[hBri- try{ GwsY-jf oSavedFile.write(b,nStart,nLen); E< 4l#Z< n = nLen; 3`hUo5K } n<Svwa} catch(IOException e) I4rPHZ| { ufa41$B'yG e.printStackTrace (); p6EDQwlf } /9Q3iV$I] LL!.c M_B:{%4 return n; w&Dv8Wv+Oq } @J[6,$UVu R7oj# F0~k1TDw } 3[p_!eoW sKLX [l Vi!Q /* ZZ/cq:3$ P **SiteInfoBean.java ~:;3uLs,8 */ dNY"]b package NetFox; \8uo{#cL8 N5|Rmfo1 XXmE+aI public class SiteInfoBean { VvByHcLv ^s7,_!.Pq 2J;`m_oP private String sSiteURL; //Site's URL C>^D*C( private String sFilePath; //Saved File's Path 4kp im private String sFileName; //Saved File's Name ,zcQS-e2 private int nSplitter; //Count of Splited Downloading File UIJx* 5FvOznK^e qOCJT Og7 public SiteInfoBean() ,7]k fB {//nSplitter的缺省值为5 `znB7VQ0 //default value of nSplitter is 5 ~KjJ\b)R this("","","",5); lYf+V8{ } WiNT;v[ $X`y%*<<v Rz%e>) public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) wyc D>hc { ,cTgR78' sSiteURL= sURL; Ar9nBJ` sFilePath = sPath; uE_c4Hp sFileName = sName; `T*U]/zQ this.nSplitter = nSpiltter; 4C_c\;d =Cf] &!.HuRiuC } <T,A&`/ v vu<:16 6y+b5-{' public String getSSiteURL() C.a5RF0 { Lf}8qB#Y return sSiteURL; $Ptk|qFe } jdRq6U^ 8Vl!|\x5 9
wa,k public void setSSiteURL(String value) hAR?
t5c { g1m-+a sSiteURL = value; X'sEE } pck >;V -<f/\U =6 %|?5G public String getSFilePath() 3*S[eqMJc { R|,7d:k return sFilePath; C?m,ta3 } tn<6:@T
_j#SpL'P ^tAO_~4 public void setSFilePath(String value) CDg AGy { 2=*=^)FNI sFilePath = value; eMMx8E)B } :xeLt; M=!i>(yG GG-[`!>.pw public String getSFileName() n[k1np$7?6 { =G>(~+EA return sFileName; "e62/Ejg% } ;b~~s.+ )^; DGzG >q( 5ir public void setSFileName(String value) U{1z;lJ { Lyoor1 sFileName = value; Ek .3 } UVX"fZ) "n?<2
wso *Z kss public int getNSplitter() \KM|f9-b { }=GM?,7b return nSplitter; oh\,OW } QlzQ]:dWC M []OHw I6dm@{/:> public void setNSplitter(int nCount) } p'8w\C$ { gg]~2f nSplitter = nCount; U</+ .$b } jxY-u+B } n(&*kfk DX@}!6|T 31XU7A /* Pz473d **Utility.java z+"0>ZN& */ a-PGW2G package NetFox; FMS2.E .hN3`>*V epVH.u% public class Utility { zqGYOm$r
5-'vB 0xBY(#;Q public Utility() XiG88Kwv {
%0v*n8 *Q/E~4AW|t 5Rs?CVVb } (3fPt;U D8/sz`N7Q //线程睡眠 RndOm.TE public static void sleep(int nSecond) f[@#7,2~M { (46U|P(v try{ Ihef$, Thread.sleep(nSecond); Oxn'bh6R0 } ngqUH catch(Exception e) [+DNM
2A { )dg UmN e.printStackTrace (); <4NQL*|> } AIfk"2 } +~:0Dxv W EG1x //日志 Ph\F'xROe public static void log(String sMsg) Na;t#, { ~y%7w5%Un System.err.println(sMsg); fiqj;GW } $y4M#yv =0Y'f](2eW 0C7" 3l public static void log(int sMsg) m2MPWy5s { g[<uwknf System.err.println(sMsg); _Fvsi3d/ } cFxSDTR } h=mv9=x m-#d8sD2C | &\^n2`> /* Es,0'\m& **TestMethod.java +{bh */ <v-92? package NetFox; @%7/2k :if5z2PE/ lZ+/\s,]| public class TestMethod { ^f"&}%" M {kv4g\a; ^:$j:w?j public TestMethod() *xho { ///xx/weblogic60b2_win.exe B)(w%\M4^ try{ zkvH=wL SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 6UtG-WHHt //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 5vl2yN SiteFileFetch fileFetch = new SiteFileFetch(bean); yl|R:/2V fileFetch.start(); K
oL%}u& } ol1AD: Ho catch(Exception e){e.printStackTrace ();} 34^Q5B~^J |c
BHBd ec,z6v^9 } aw;{<?* ]*;RHy9 @)8NI[=6O public static void main(String[] args) +2f>
M4q { 9 ?[4i' new TestMethod(); <:H } SlM>";C\ } d
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