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/* (n# **SiteFileFetch.java N/]TZu~k z */
RtK/bUa package NetFox; VM|8HR7U import java.io.*; rY88xh^ import java.net.*; julAN$2 {_PV~8u VAV@Qn public class SiteFileFetch extends Thread { IC7n;n9 :x= ZvAvo r0?`t!%V SiteInfoBean siteInfoBean = null; //文件信息Bean PE+N5n2Tl long[] nStartPos; //开始位置 kf^Wzp long[] nEndPos; //结束位置 ;p1%KmK3 FileSplitterFetch[] fileSplitterFetch; //子线程对象 0A\o8T.12 long nFileLength; //文件长度 2qw~hWX boolean bFirst = true; //是否第一次取文件 R~)c(jj5 boolean bStop = false; //停止标志 fH}` File tmpFile; //文件下载的临时信息 m&b!\"0 DataOutputStream output; //输出到文件的输出流 .b5B7x} d7P|
x //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) n8J';F
=P public SiteFileFetch(SiteInfoBean bean) throws IOException [96|xe\s { 7?b'"X" siteInfoBean = bean; Kq{9:G //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 4TUe*F@
ML tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Z3"f7l6 if(tmpFile.exists ()) Ix-FJF- { {U7j bFirst = false; X2Y-TET read_nPos(); amgYr$)m } NcRY
Ch else 6SW:'u|90 { t~gnai nStartPos = new long[bean.getNSplitter()]; qky{]qNW nEndPos = new long[bean.getNSplitter()]; UP%X` } ^P(HX znX2W0V L<5go\!bV CQ6Z[hLWF } k2p{<SO; GXJJOy1"! ln#Lx&r;| public void run() A .*}< { TE^BfAw@ //获得文件长度 Uo5l
=\ //分割文件 b'uH4[zX% //实例FileSplitterFetch `[/BG)4 //启动FileSplitterFetch线程 bZ:w_z[3= //等待子线程返回 DYbkw4Z, try{ f GY. +W_ if(bFirst) &`0heJ
5Yn { N^CD4l nFileLength = getFileSize(); /3'>MRzR if(nFileLength == -1) WZ;f3
" { .u)Po;e` System.err.println("File Length is not known!"); pgfI1`h } [u=b[( else if(nFileLength == -2) -i7W|X" { 4: 5 CnK System.err.println("File is not access!"); 315Rk!{AJ } !2$O^
}6" else 67')nEQ9 { sR
~1J4 for(int i=0;i<nStartPos.length;i++) =AGsW { ci6j"nKci nStartPos = (long)(i*(nFileLength/nStartPos.length)); [gQ*y~N } q/<.^X for(int i=0;i<nEndPos.length-1;i++) hyVuZ\9B { f4CwyL6ur nEndPos = nStartPos[i+1]; 'C!b($Y } 0=yKE J nEndPos[nEndPos.length-1] = nFileLength; 3QZw } $yI!YX& } ?:~Y%4; }vPDCUZ d* 7 Tjs{\ //启动子线程 C/tn0 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -D`*$rp, for(int i=0;i<nStartPos.length;i++) )9l5gZX'I { VLkK6W.u fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _Z@- q siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 0ppZ~}& nStartPos,nEndPos,i); #p6#,PZ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5<Xq7|Jt fileSplitterFetch.start(); &iId<.SiJ } CXb)k.L // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lpj$\WI= siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %koHTWT+ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", `` 6?;Y nEndPos = " + nFileLength); C$b$)uI; // fileSplitterFetch[nPos.length-1].start(); VD<W 0".pw; .} -_4U+Cfmtl //等待子线程结束 MX xRM~ //int count = 0; xmT(yv, //是否结束while循环 Ud\Jc:DG boolean breakWhile = false; WpWnwQY`# \:'=ccf U;LbP-{B while(!bStop) m("!
M~1 { 9=&LMjTQ write_nPos(); ZBB^?FF Utility.sleep(500); 7fgA)dU:K breakWhile = true; +79?}| OGzth$7A uy9k^4Cqa for(int i=0;i<nStartPos.length;i++) }2|>Y[v2j { Ir_K83VM if(!fileSplitterFetch.bDownOver) W]4Gs; { 3<AZ,gF1 breakWhile = false; 9pb4!=g* break; /q ;MihK } 6dt]$ } ?R&,1~h if(breakWhile) 1aS[e%9Mg break; Y\Odj~Mj 2n2{Oy>L `u3to{ //count++; $,bLK|<hi //if(count>4) 6OkN(tL&. // siteStop(); _iO,GT=J- } =P<gZ-Cm Wt"fn&R} :CNHN2 J System.err.println("文件下载结束!"); :lcZ)6&S } g PU|Gv5 catch(Exception e){e.printStackTrace ();} $o?Wum } Z}5;K"T/ zC\ pd# pE[ul //获得文件长度 c6:"5};_ public long getFileSize() )F,H(LblH { jV;&*4if int nFileLength = -1; !i&^H, try{ <iajtq<Z URL url = new URL(siteInfoBean.getSSiteURL()); ek1YaE HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); q.`+d[Q2 httpConnection.setRequestProperty("User-Agent","NetFox"); 4=9To|U* Ix93/FAn qrsPY d int responseCode=httpConnection.getResponseCode();
yS _,lS if(responseCode>=400) cE
'`W7&A { Y 4sf 2w processErrorCode(responseCode); (f,D$mX return -2; //-2 represent access is error 0Y,_
DU } 7?:7}xb- GU8b_~Gk?
rZ/,^[T String sHeader; E5w.wx {0+gPTp ,Drd s"H for(int i=1;;i++) )cNG)F { "2o,XF //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); "gADHt=MIR //Utility.log(in.readLine()); qPK3"fzH sHeader=httpConnection.getHeaderFieldKey(i); _%Sorr if(sHeader!=null) *-(J$4RNz { n_Px=s!1p@ if(sHeader.equals("Content-Length")) >wS52ng { ~+d?d6*c nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ({ads_l break; XO~xbG7>gZ } T]l_B2. } yd2v_ else 3/RmJ`c{ break; W'hE, } zM%ILv4 } br*L|s\P\9 catch(IOException e){e.printStackTrace ();} )sWdN(E3 catch(Exception e){e.printStackTrace ();} oM/(&" -yHVydu= RUC
V!L Utility.log(nFileLength); *lRP ZN 2cY7sE068 TK<~(Dk return nFileLength; dPwe.: } <cW$
\P}hV Va/LMw T>2) YOx //保存下载信息(文件指针位置) d?C8rkV' private void write_nPos() cobq+Iyu { +/y 3]} try{ M)C.bo{p output = new DataOutputStream(new FileOutputStream(tmpFile)); }2:/&H' output.writeInt(nStartPos.length); Y
O;N9wu3f for(int i=0;i<nStartPos.length;i++) Sd'!(M^k3 { dtw1Am#Ci // output.writeLong(nPos); u0`~
|K output.writeLong(fileSplitterFetch.nStartPos); P*_!^2 output.writeLong(fileSplitterFetch.nEndPos); Kf2Ob1 } PLf output.close(); p1
>
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catch(IOException e){e.printStackTrace ();} >H?l[*9 catch(Exception e){e.printStackTrace ();} 9=7),`$ } j38>,9u, XP~bmh,T, &@u;xc| v //读取保存的下载信息(文件指针位置) -fFM-gt^t private void read_nPos() o6,$;-?F_ { lp3 A B try{ 7K>FCT DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); &;S.1tg int nCount = input.readInt(); t-*oVX3D nStartPos = new long[nCount]; c-.t8X,5(~ nEndPos = new long[nCount]; rK)aR for(int i=0;i<nStartPos.length;i++) 2j&-3W$^ { h$.y)v nStartPos = input.readLong(); KSU?Tg&JR nEndPos = input.readLong(); 6*9hAnH } %
\p:S)R input.close(); iD+Q\l;% } b3N>RPsHS catch(IOException e){e.printStackTrace ();} ig:,: KN catch(Exception e){e.printStackTrace ();} P -0 } k_?xiOSh xtMN<4#E xzTTK+D@ private void processErrorCode(int nErrorCode) ,=whwl "tA { fYU/Jn# System.err.println("Error Code : " + nErrorCode); OBaG'lrZy } @ de_|*c &0Yv*,4] ]v j=M-:+ //停止文件下载 F* " public void siteStop() 6KC.l}Y* { a<9gD,]P bStop = true; Q= IA|rN for(int i=0;i<nStartPos.length;i++) HTiqErD2_ fileSplitterFetch.splitterStop(); |!:ImX@ tn!z^W g BfYm } ZLw7-H6Fh } f(~xdR))eh //负责部分文件的抓取 u&Ts'j **FileSplitterFetch.java ZRN*. */ .|`JS?L[ package NetFox; d1VNTB g]?&qF} {E`[`Kf import java.io.*; m?bd6'&FR import java.net.*; YSERQo xp-.,^q\w p.^glz >B public class FileSplitterFetch extends Thread { ]7" W( mpfc2>6Il. '7AlE!7% String sURL; //File URL KLD)h,] long nStartPos; //File Snippet Start Position ^*(*tS|M long nEndPos; //File Snippet End Position A.tONPi int nThreadID; //Thread's ID j]th6 boolean bDownOver = false; //Downing is over |6/k2d{,( boolean bStop = false; //Stop identical A8 V7\ FileAccessI fileAccessI = null; //File Access interface O|j(CaF 1H sfCky{ ?RL[#d+y public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException o}H7;v8H { {`5Sh1b this.sURL = sURL; m`luMt9 this.nStartPos = nStart; 8JxJ>I-9p this.nEndPos = nEnd; F|p&v7T nThreadID = id; )N h67P3X" fileAccessI = new FileAccessI(sName,nStartPos);//定位 EUH&"8
L } ^_W+ DZo7T! 0gdFXh$!e public void run() (XW\4msB)I { 6d/;GyG while(nStartPos < nEndPos && !bStop) AuIb>@a { iIWz\FM 5|S|S))_Q Pqiw[ +a$ try{ &|>CW:)&1" URL url = new URL(sURL); .%) FK#s- HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;Q"xXT`;: httpConnection.setRequestProperty("User-Agent","NetFox"); Ay\=&4dv String sProperty = "bytes="+nStartPos+"-"; eX7dyM httpConnection.setRequestProperty("RANGE",sProperty);
~/Gx~P] Utility.log(sProperty); =kvfe" N0e HE
GMwRJG n,D~ whZx InputStream input = httpConnection.getInputStream(); y'\BpP //logResponseHead(httpConnection); wBz?OnD/D +-tvNX%IJ .^6;_s>FN byte[] b = new byte[1024]; a+A^njk int nRead; +oa\'.~? while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ,#&\1Vxf { KwGk8$ U nStartPos += fileAccessI.write(b,0,nRead); gB/4ro8 //if(nThreadID == 1) f P'qUN // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7u[U %yd } cQ(zBf &)jBr^x#> 4q sIJJ[. Utility.log("Thread " + nThreadID + " is over!"); x\taG.'zX bDownOver = true; y+b4sFf //nPos = fileAccessI.write (b,0,nRead); 9gNQ,c
\gT } <vxj*M; catch(Exception e){e.printStackTrace ();} 7)&}riQ } zbQ-l1E } h^_Sd"l3 ~2
L{m[s| `4^-@} //打印回应的头信息 TG4?"0`I5 public void logResponseHead(HttpURLConnection con) B#RBR<MFC { #OlU|I for(int i=1;;i++) hx|Cam" { reo String header=con.getHeaderFieldKey(i); b=nQi./f if(header!=null) =`RogjbP //responseHeaders.put(header,httpConnection.getHeaderField(header)); g<C_3ap/ Utility.log(header+" : "+con.getHeaderField(header)); {Up@\M else TZ#(G break; h'*>\eC6 } _$s ;QI]x } *sNZ.Y:. yB][
3?lv [:M:6JJ public void splitterStop() UcaLi& { /.PjHTM< bStop = true; Gk~QgD/Pix } p4l^b[p YrlOvXW `PML4P[ } }dnO7K I+nKaN+8i
G@s]HJ: /* j7L uN **FileAccess.java Td!@i[6%H *//文件访问(定位,写) kb"g package NetFox; b{T". @b import java.io.*; b4TZnO qg521o$* vo48\w7[ public class FileAccessI implements Serializable{ 2R}9wDP -+1_ 1! //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 7G,{BBB RandomAccessFile oSavedFile; 1Z9_sd~/6 long nPos; !~X[qT s?qRy
2 %V r vu5 public FileAccessI() throws IOException k^A17Nf`2 { 6T3uv,2 this("",0); "J51\8G@@ } ~W?F. y"N7r1Pf <*D{uMw public FileAccessI(String sName,long nPos) throws IOException ryhme\%l;f { ;%-f>'KhI7 oSavedFile = new RandomAccessFile(sName,"rw"); rHS;wT this.nPos = nPos; =E{e|(1+u oSavedFile.seek(nPos); 6yDc4AX }
pwj ? <P)U Ggd 8GRp1'\Hi public synchronized int write(byte[] b,int nStart,int nLen) jC<1bf$K { syuW>Z8s int n = -1; 2'R;z<_ try{ F.9SyB$ oSavedFile.write(b,nStart,nLen); M5$YFGGR n = nLen; %}< e;t-O } $e(]L(o; catch(IOException e) jg2UX { cvoE4&m! e.printStackTrace (); +TA'P$j } \BIa:}9O +w'"N !_zp'V]? return n; U)v['5% } WCa>~dF> /g|H?F0 cJ CKxj } +ZuT\P&kR5 I+qg'mo :0G_n\
/* XUI9)Ne **SiteInfoBean.java $-HP5Kj(k- */ F0yvV6; package NetFox; t r)[6o# 5AX
AIP n) {2|[7oNT6 public class SiteInfoBean { z]/;? j41)X'MgJ M4%u~Z:4h+ private String sSiteURL; //Site's URL CV9o,rL private String sFilePath; //Saved File's Path J%8M+!`F private String sFileName; //Saved File's Name 4CUoXs' private int nSplitter; //Count of Splited Downloading File 2(SU# /, (P(=6-0 E5^P*6c( public SiteInfoBean() O=,[u? {//nSplitter的缺省值为5 _J|TCm //default value of nSplitter is 5 [#+yL this("","","",5); P}YtT3.K } *u?QO4> 2#<)-Cak kTC'`xv public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) :K:oH}4oh { *=sMJY9#jE sSiteURL= sURL; x,U'!F sFilePath = sPath; 0_!')+ sFileName = sName; 2sezZeMV this.nSplitter = nSpiltter; tHhau.! s}
I8:ufT W0zRV9"P } ]xx}\k F&tU^(7< JEw+5MO@ public String getSSiteURL() 4tQ~Z6Jn; { J$aE:g6' return sSiteURL; SG5GJCkc } [`F}<L." S]}hh,A w^AY= Fc public void setSSiteURL(String value) $nkvp`A { I_/E0qSJI sSiteURL = value; Yk;-]qi7 } jOkc' ,A$#gLyk< {7'Evfn) public String getSFilePath() t2L} { ~CtLSyB return sFilePath; >)Udb// } 6Kvo Ho wjq;9%eXk Fjs:rZ#{ public void setSFilePath(String value) cuw 7P { e9LP!"@EY sFilePath = value; S'%|40U } -qbx:Kk( [NxC7p:Lo B4D#TlB public String getSFileName() yt5Sy { }Wk^7[Y return sFileName; 1Fg*--8[r } A^2n i=b 7J[DD5 .83{NF public void setSFileName(String value) q&DM*!Jq { wV604eO( sFileName = value; N4[`pXM6 } .jXD0~N8q Kl Kk?6> 8gHOs#\ public int getNSplitter() 483/ZgzT` { @#j?Z7E| return nSplitter; iL$~d@AEn } FI(iqSJ6 d3[O!4<T >=6 j: public void setNSplitter(int nCount) <Jf[N= { |3bCq(ZR\P nSplitter = nCount; s3/iG37K } nF)b4`Nd } f@j )t%mh _.{I1*6Y2 >1$vG /* @W1F4HYds **Utility.java 2Y7u M;8 */ N|rB~
package NetFox; baO'FyCs9& 9cnLf# yrF"`/zv6| public class Utility { SSAf<44e LmZ"_ Y'{F^VxA/ public Utility() W"v"mjYud { z@8W +_T`tmQ lz [s } @2`$ XWD !U"?vS l //线程睡眠 <k'%rz public static void sleep(int nSecond) uxOeD%Z> { &)$}Nk try{ ?;YymD_ Thread.sleep(nSecond); tR Cz[M& } TPF5 ? catch(Exception e) @}<b42 { S]x\Asj;w e.printStackTrace (); `3e>JIl"0 } \3WQ<t)W } Wb%t6N? V{{Xz: //日志 Bnfp_SM public static void log(String sMsg) g}OZ!mKd { 1!=^mu8 System.err.println(sMsg); 6bwzNY 7 } 6Bf aB: mUdj2vB$+' *DcB?8% public static void log(int sMsg) y,xJ5BI$ { !de`K
| System.err.println(sMsg); Rn_FYP } BW x=Q } 6%B) ):-Ub4A\ *A([1l&]i /* wj2z?0}o **TestMethod.java ;i,3KJ[L */ /Y`u4G() package NetFox; '/'dg5bfV m>9j dsqB 9SQcChG~j public class TestMethod { 2r"J"C P^57a?[` ' 4.T1i, public TestMethod() f
0r?cZ { ///xx/weblogic60b2_win.exe AF\gB2^ try{ F nc MIzp SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); G@+R!IG //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ZZ324UuATX SiteFileFetch fileFetch = new SiteFileFetch(bean); gZ>)
S@ fileFetch.start(); [J8;V|v } 045_0+r"@ catch(Exception e){e.printStackTrace ();} `LOW)|6r` sXwa`_{ F#)@ c } E<[Y KY fZavZ\qU y#{v\h
Cz public static void main(String[] args) yi;pn Z { \P;2s<6i\ new TestMethod(); jdX* } )wNcz~
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