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/* t .=Oj **SiteFileFetch.java A@ VaaX */ xXOw:A' package NetFox; P4%>k6X import java.io.*; 1xC`ZhjcD import java.net.*; ^
KAG|r9 e[4V%h iG-N public class SiteFileFetch extends Thread { |\{Nfm=:% Bcaw~WD W78o*z[O SiteInfoBean siteInfoBean = null; //文件信息Bean JD&U}dJ long[] nStartPos; //开始位置 M:|/ijpN long[] nEndPos; //结束位置 a|.20w5 FileSplitterFetch[] fileSplitterFetch; //子线程对象 J#@lV long nFileLength; //文件长度 9.-47|-9C boolean bFirst = true; //是否第一次取文件 b`]M|C [5 boolean bStop = false; //停止标志 1ZNNsB File tmpFile; //文件下载的临时信息 _80ns&q DataOutputStream output; //输出到文件的输出流 }xJR.]).KW jZ#UUnR% //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 1*c>I@I; public SiteFileFetch(SiteInfoBean bean) throws IOException ,aO@.<" { )[
b#g(Y( siteInfoBean = bean; UT;4U;a,m //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); g< )72-h tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); MiD if(tmpFile.exists ()) |D(&w+( { :B^mV{~
bFirst = false; tQf!|]#J read_nPos(); &CO|Y(+ } :p$EiR else kxy]vH6m { vnVZJ}]w\ nStartPos = new long[bean.getNSplitter()]; 5%'S nEndPos = new long[bean.getNSplitter()]; "cQvd(kug } `{L{wJ:&a *+W6 P.K /x
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.dr wO!%
q[ } i :EO(` jQs*(=ls |Z!@'YB public void run() j`hNZ %a { 1^tSn#j //获得文件长度 +i4P,Lp //分割文件 &|NZ8:*+# //实例FileSplitterFetch 9PCa*, //启动FileSplitterFetch线程 Ri[S<GOMii //等待子线程返回 HoV{U zm try{ A$N+9n\ if(bFirst) 3Mxz_~ { mDlCt_h nFileLength = getFileSize(); +#9xA6,AE if(nFileLength == -1) KZZOi: { eL_^: - System.err.println("File Length is not known!"); D| [/>x } yW{mK else if(nFileLength == -2) tr5'dX4] { *^ey]),f54 System.err.println("File is not access!"); a" ^#!G<+ } xl|ghjn else yr%yy+(.k { ,T/GW,? for(int i=0;i<nStartPos.length;i++) Lp!0H `L { y~x#pC*w nStartPos = (long)(i*(nFileLength/nStartPos.length)); IL2e6b } /G{&[X<4U for(int i=0;i<nEndPos.length-1;i++) +{S Maq { $]nVr(OZ_ nEndPos = nStartPos[i+1]; IN<:P } F9v)R#u~ nEndPos[nEndPos.length-1] = nFileLength; :a=ro2NH } 4+-5,t7 } )nJzSN=>$ =jsx(3V VtD@&N //启动子线程 }!eF
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; zoR,RBU6 for(int i=0;i<nStartPos.length;i++) KSF5)CZ5 { &qNP?>C!= fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b=V)?"e- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), _RN/7\ nStartPos,nEndPos,i); h_AJI\{" Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Z`^
K%P= fileSplitterFetch.start(); .L~f Fns/ } 6{cybD`Ef& // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), H<v c\r siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); x&QNP // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", (qNco8QKu3 nEndPos = " + nFileLength); %j~9O~- // fileSplitterFetch[nPos.length-1].start(); N5[_a/ I[tAT[ < 9` OG //等待子线程结束 7yo|ie@S //int count = 0; C}x4#bNK //是否结束while循环 2q2p=H>& boolean breakWhile = false; (3)C_Z L+v8E/W /E=h{| while(!bStop) U;x99Go: { j4.Qvj >:4 write_nPos(); >:3xi{ Utility.sleep(500); gn-=##fT:i breakWhile = true; \DG(
8l 4U}.Skzq U'JP1\ for(int i=0;i<nStartPos.length;i++) s4\SX, { 6|B a if(!fileSplitterFetch.bDownOver) #R~">g:w { Z\ "Kd breakWhile = false; TKj/6Jz| break; 7AZ5%o } 'US:Mr3 } |NphG| if(breakWhile) |HKHN?) break; eY0Ly7 r< d? fJSV)\e0 //count++; &-EyM*:u! //if(count>4) E9~&f^f // siteStop(); )W_ Y3M, } G#_(7X& <MI$Nl +lY\r + ; System.err.println("文件下载结束!"); g7E`;&f } Jgi{7J catch(Exception e){e.printStackTrace ();} MY0[Oq cm= } V^/h;/!^ HQ-N!pf9 vZ1D3ytfG //获得文件长度 HnH2u; public long getFileSize() J.CZR[XF# { ThT.iD[ int nFileLength = -1; RPScP try{ Gc3PN URL url = new URL(siteInfoBean.getSSiteURL()); YQfZiz}Fv HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /_ hfjCE httpConnection.setRequestProperty("User-Agent","NetFox");
YV2pERl ]ci|$@V 8&`T<ECq> int responseCode=httpConnection.getResponseCode(); n]6w)wE( if(responseCode>=400) 1*eWvYo1 { MO(5-R` processErrorCode(responseCode); 6w .iEb return -2; //-2 represent access is error do:RPZ! } XH_qA[=c] `qYc#_ELv ej??j<] String sHeader; ni 02N3R *(XgUJq+ U`vt/#j
1 for(int i=1;;i++) pqNoL*
H { y+~Aw"J} //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); \C'I l
w //Utility.log(in.readLine()); 'KN!m|
z sHeader=httpConnection.getHeaderFieldKey(i); )Sh;UW if(sHeader!=null) ;Vtpq3 { ~jrU#<'G9 if(sHeader.equals("Content-Length")) 8)2u@sx% { R.n`R|NOd nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); b^|,9en break; Q=9VuTE } dsft=t8s }
s*A|9uf5 else u{y5'cJ{ break; 'rcsK } lf7H8k, - } W1M/Z[h6)5 catch(IOException e){e.printStackTrace ();} ^dp[Z,[1z catch(Exception e){e.printStackTrace ();} c+
H)1Dfq Zq6ebj rt4|GVa Utility.log(nFileLength); NIcNL(] ?)ZLxLV:: 9#A{C!75(y return nFileLength; PeR<FSF ,i } xdSj+507 UW~tS boHm1hPKS //保存下载信息(文件指针位置) d`rDEa private void write_nPos() m0K2 p~ { i=+<7]Q try{ "Mu$3w output = new DataOutputStream(new FileOutputStream(tmpFile)); U*#E aL output.writeInt(nStartPos.length); "q#g/T for(int i=0;i<nStartPos.length;i++) ~s^6Q#Z9| { 1 bx^Pt) // output.writeLong(nPos); v,O&UrZ output.writeLong(fileSplitterFetch.nStartPos); mm~o%1|WR output.writeLong(fileSplitterFetch.nEndPos); d(cYtM,P } _O'rZ5}& output.close(); ;?[ +vf") } W!Os ci catch(IOException e){e.printStackTrace ();} [ZpG+VAJ8 catch(Exception e){e.printStackTrace ();} gbi~!S- } +vY`?k` 'Rf#1ls# pPqbD}p //读取保存的下载信息(文件指针位置) 3R96;d; private void read_nPos() j-\^
}K.& { Pn){xfqDl try{ 2tTV5,(1 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); TEy.zzt int nCount = input.readInt(); *v-xC5L1\ nStartPos = new long[nCount]; K0bmU(Xxp nEndPos = new long[nCount]; F;l<>|vG for(int i=0;i<nStartPos.length;i++) k{$"-3ed { - cC(d$y nStartPos = input.readLong(); Y@xeyMzE nEndPos = input.readLong(); xH.q } M>l+[U input.close(); ]$%4;o4O } D+nj[8y catch(IOException e){e.printStackTrace ();} {ca^yHgGy catch(Exception e){e.printStackTrace ();} 9S`b7U=P } rb4g<f| Wam?(!{mOf ]uXsl0'`V private void processErrorCode(int nErrorCode) :re(khZq# { @g` ,'r System.err.println("Error Code : " + nErrorCode); "PP0PL^5F } I ywx1ac gG?*Fi o*S $j Cf? //停止文件下载 ]qTr4`. public void siteStop() Tm,L?Jh { $6+P&"8 bStop = true; 8-#2?= for(int i=0;i<nStartPos.length;i++) |I<-x)joIK fileSplitterFetch.splitterStop(); ^d=@RTyo/ FK('E3PG + {dIs } QxL
FN(d } !S}Au Mw //负责部分文件的抓取 qf {B **FileSplitterFetch.java =5#Jsn?U */ '.v^seU package NetFox; 3`!KndY1 Lu5.$b )}lV41u import java.io.*; 'Z9F0l"Nr import java.net.*; =&xoyF ~n\ea:. VAzJclB public class FileSplitterFetch extends Thread { 2C&%UZim;P Q*(C)/ QW !Z)^c& String sURL; //File URL {NDe9V5 long nStartPos; //File Snippet Start Position J4X35H=Z long nEndPos; //File Snippet End Position Ku'U^=bVm: int nThreadID; //Thread's ID ?5gpk1 boolean bDownOver = false; //Downing is over YtQWArX, boolean bStop = false; //Stop identical 2J;CiEB FileAccessI fileAccessI = null; //File Access interface MPc=cLv ~(S4/d5 p$<qT^]& public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException vRs5-T { ?^Ux+mVE this.sURL = sURL; -qF| Y
f this.nStartPos = nStart; g{(nt5|^l this.nEndPos = nEnd; 9mm(?O~'p nThreadID = id; z$b!J$A1 fileAccessI = new FileAccessI(sName,nStartPos);//定位 _XPc0r:?> } bq]a8tSB 9\2&6H >S]')O$c public void run() q"oNB-bz { [t'"4 while(nStartPos < nEndPos && !bStop) Awh)@iTL { r1]e: RdHR[Usm qiN'Tuw9 try{ 7m:, -xp URL url = new URL(sURL); iI7~9SCE HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); AJu. httpConnection.setRequestProperty("User-Agent","NetFox"); IgL8u String sProperty = "bytes="+nStartPos+"-"; sn%fE httpConnection.setRequestProperty("RANGE",sProperty); nc)`ISI Utility.log(sProperty); :Ib\v88WIv Is[0ri <5%We(3 InputStream input = httpConnection.getInputStream(); f -5ZXpWs' //logResponseHead(httpConnection); 3}+
\&[ dGe 1wt]J!hgV byte[] b = new byte[1024]; rB]/N,R int nRead; r^)<Jy0|r while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ";]m]PRAam { \ :.p8` nStartPos += fileAccessI.write(b,0,nRead); /_\4(vvf //if(nThreadID == 1) }=gGs // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); oLoa71Q} }
8z"Yo7no ?$Pj[O^hl LJD"N#c Utility.log("Thread " + nThreadID + " is over!"); q`hg@uwA{` bDownOver = true; b%(0AL //nPos = fileAccessI.write (b,0,nRead); 1Jt%I'C? } Nsq%b?# catch(Exception e){e.printStackTrace ();} 2ip~qZNw>< } {$^|^n5j } mwxJ# ~gN'";1i k>"I!&#g //打印回应的头信息 $)3/N&GXR public void logResponseHead(HttpURLConnection con) Dp8(L ]6 { <,{v>vlw for(int i=1;;i++) |dK-r { |@RO&F String header=con.getHeaderFieldKey(i); y3#\mBiw if(header!=null) >qCT#TY //responseHeaders.put(header,httpConnection.getHeaderField(header)); <IYt*vlm Utility.log(header+" : "+con.getHeaderField(header)); LHps2, else ?k#%AM break; PA E)3 } \xt!b^d0 } 7j+.H/2 ee0J;pP2# jVDNThm+ public void splitterStop() VaB7)r { j[9B,C4 bStop = true; eMs`t)rQ } (H$eXW7
[7bY( aUnm9ur } ,#crtX Xe5J q9OIw1xQr* /* (/%}a`2#o **FileAccess.java , Le_PJY) *//文件访问(定位,写) hm&~6rB package NetFox; KksbhN{AB import java.io.*; )YZ41K5N 1yhx)m;f '@$?A>.cj public class FileAccessI implements Serializable{ q+K`+& @\ nP}/#Wy //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 8w{V[@QLn RandomAccessFile oSavedFile; ?}W:DGudZ long nPos; ? f%@8%px +/ #J]v- z
>pq<}R6 public FileAccessI() throws IOException toF@@% { b^ v.FK46G this("",0); U<*dDE~z } kr3ZqMfeI ^0r@", }RD,JgmV public FileAccessI(String sName,long nPos) throws IOException O".#B { C ZJW`c/ oSavedFile = new RandomAccessFile(sName,"rw"); R8ZW1 this.nPos = nPos; =14p Ee oSavedFile.seek(nPos); *bR _
C"- } V482V#BP .9`.\v6R (j2]:BVu public synchronized int write(byte[] b,int nStart,int nLen) *{XbC\j { L:~
"Vw6]_ int n = -1; W{k}ogI; try{ -`rz[";n oSavedFile.write(b,nStart,nLen); 0n5N-b?G-@ n = nLen; k&9
b&-=fk } zg)]: catch(IOException e) Zu5`-[mw { d=q2Or e.printStackTrace (); XrYz[h*)! } ^G5_d"Gr p`Ax)L\f K !`t EW[ return n; *r[PZ{D+ } {AJspLcG kGCd!$fsk 4SmhtC } ny{|{a q4Q1Ib-<2 uQrD}%GI /* E{h **SiteInfoBean.java mlX^5h' */ zxXm9zrLo package NetFox; gR%fv ]5B5J l\a 0 k4 public class SiteInfoBean { Fj|C+;Q. 9=Y-w s qY0p)`3!% private String sSiteURL; //Site's URL =ejkE;
%L private String sFilePath; //Saved File's Path /z`LB private String sFileName; //Saved File's Name Q
R;Xj3]v private int nSplitter; //Count of Splited Downloading File Wcw$
Zv :4/RB%)" 7@5}WNr public SiteInfoBean() EC|t4u3 {//nSplitter的缺省值为5 +wr2TT~ //default value of nSplitter is 5 zJOL\J' this("","","",5); |I6\_K.=L } ^ola5w D =rGjOb3+ g7rn|<6FI public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) hgL wxJu { i_Ab0vye sSiteURL= sURL; rOEk%kJ sFilePath = sPath; #zyEN+ sFileName = sName; +\2{{~_z this.nSplitter = nSpiltter; ZXh6Se4o ??Q'| r ZG"_M@S. } O'*KNJX .k|8nNj QJ\
o"c public String getSSiteURL() :>c33X} { 4[v
%]g` return sSiteURL; 3o5aB1 } uzr(gFd Vf:/Kokq ]nY,%XE public void setSSiteURL(String value) 9@/X;zO { [W;iR_7T5 sSiteURL = value; tN&4t
xB } pX `BDYg. _8P0iC8Zg# aEM2xrhy, public String getSFilePath() P>j^w#$n { 6 GqR]KD return sFilePath; y@Z@ eK3 } xp7`[. c@>Tzk%?" FL*qV"r^n public void setSFilePath(String value) XEl-5-M" { ;89 `!V O sFilePath = value;
T)?:q } h fZY5+Z< |WwC@3) gqJSz}' public String getSFileName() H0r@dn { I7,5ID4pn return sFileName; F,5~a_GP? } 3 }~.#`QeY wrI66R}@ uj;tmK>; public void setSFileName(String value) iq*]CF { "NWILZwEV sFileName = value; d5jZ? } *oZ]k`-!8 .^
djt &8$Gyu public int getNSplitter() A{X:p3$eN { bl yU53g return nSplitter; 0P i+ (X } [}:;B$, pZHx >J(._K public void setNSplitter(int nCount) F#Y9 @E { $r+_Y/ nSplitter = nCount; 4:wVT;?a } v_^>*Vm* } U1nObA C)Ep}eHjf_ ;&7dX^oH /* *WMI<w~_ **Utility.java bji5X')~# */ qHVZsZ package NetFox; Sq22] ,6VY S\a3 iF,%^95= public class Utility { TP3KT) BV;dV6`z 4Ys\<\~d public Utility() tBUn
KPT { %vn"tp KEfN!6 Uzh#zeZ`< } Z;/QB6|% Y]!WPJ`f2 //线程睡眠 zD^*->`p public static void sleep(int nSecond) Aq5CF`e{ { D*=.;Rq try{ yK+1C68A
Thread.sleep(nSecond); eYtP396C| } <cm(QNdcC catch(Exception e) GY`mF1b { /tdRUX e.printStackTrace (); (}B3df } E)>.2{]C> } okm
}%#| O}s Mqh //日志 P*6h$T public static void log(String sMsg) B<$(Nb5< { ~#MXhhqB System.err.println(sMsg); b
I"+b\K } ^iA_<@[`X[ R1C}S _w}l, public static void log(int sMsg) >;Ag7Ex { \^o I3K0` System.err.println(sMsg); <#nt?Xn } s,CN<`/>x } x`:c0y9uG PQj 'D<G eQqnPqi- /* v`r![QpYf **TestMethod.java -#Bk */ u_HCXpP!Q package NetFox; *3iEO> +-r ~-b s ctOBV public class TestMethod { F,8 ?du] rSa=NpFxLu gWD46+A){ public TestMethod() AXpg_JC { ///xx/weblogic60b2_win.exe .QU] try{ x?7z15\ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ni$;"RGC //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); &K*Kr=9N SiteFileFetch fileFetch = new SiteFileFetch(bean); \/s0p fileFetch.start(); NR3h|'eC } `O0bba=:= catch(Exception e){e.printStackTrace ();} i&TWIl8 cY^'Cj b($9gre>mI } QQ,V35Vp[ +mPVI 5pU/X.lc public static void main(String[] args) 6e>P!bo { j=dGNi)R new TestMethod(); x,NV{uG$n } 4_P6P }
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