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/* wQy~5+LE **SiteFileFetch.java `Ze$Bd\ */ iEtR<R>= package NetFox; @~ke=w6&pe import java.io.*; uVU)LOx import java.net.*; &M?b08 k0V]<#h87 "M
iJM+, public class SiteFileFetch extends Thread { U~ a\v8l~ #bt f|\D v0)Y, hW SiteInfoBean siteInfoBean = null; //文件信息Bean pIK:$eN!/ long[] nStartPos; //开始位置 :~"myn, long[] nEndPos; //结束位置 >^g2Tg: FileSplitterFetch[] fileSplitterFetch; //子线程对象 8h=m()Eu long nFileLength; //文件长度 i3|xdYe$ boolean bFirst = true; //是否第一次取文件 ]h`*w boolean bStop = false; //停止标志 ]FVJQS2h File tmpFile; //文件下载的临时信息 '62_q8: DataOutputStream output; //输出到文件的输出流 Het"x >fP;H}S6 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) d38o*+JCf public SiteFileFetch(SiteInfoBean bean) throws IOException :B5*?x { nrev!h siteInfoBean = bean; %zGv+H? //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); LhAW|]; tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); y]@JkF( if(tmpFile.exists ()) c;q=$MO` { >&+V[srfD bFirst = false; l@GJcCufE read_nPos(); BSHS)_xs } | VaJ70\o else ER9{D$ { Lwi"K8.u nStartPos = new long[bean.getNSplitter()]; {u
y^Bui} nEndPos = new long[bean.getNSplitter()]; uQ_C<ii"W } dI%jR&.e; $-UVN0= +=9iq3<yfS H0"'jd } oCkG {c3FJ5: Gf#l ^yr public void run() )ddJ\: { J2x}@p //获得文件长度 iupkb //分割文件 up['<Kt+a //实例FileSplitterFetch .>TG{>sH //启动FileSplitterFetch线程 FD E?O]^ //等待子线程返回 3]kM&lK5\ try{ VS ECD;u4c if(bFirst) ,h1\PT9ULY { I>nYI|o1 nFileLength = getFileSize(); V]J"v#!{ if(nFileLength == -1) !\{2s!l~ { ^cPVnl System.err.println("File Length is not known!"); #'KM$l,P } E-Xz else if(nFileLength == -2) @a]cI { %>+lr%B System.err.println("File is not access!"); :^`j:B } &D[M<7T else y>t:flD* { \i,H1a for(int i=0;i<nStartPos.length;i++) x*F-d2D { 46)[F0,$r nStartPos = (long)(i*(nFileLength/nStartPos.length)); Ws3z-U>j } rG~W=!bj for(int i=0;i<nEndPos.length-1;i++) \9p.I?= { Ih5Y7<8b~ nEndPos = nStartPos[i+1]; U3B&3K} ~ } =/a`X[9vI nEndPos[nEndPos.length-1] = nFileLength; 5|eX@?QF58 } 8i;drvf } N
e{=KdzT rMJ@oc v `/nX-> //启动子线程 -a_qZ7 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; \6a' p
Q, for(int i=0;i<nStartPos.length;i++) mIG>`7`7N { ulN1z fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1yF9zKs&_ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), H74'I} nStartPos,nEndPos,i); p@Os Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); H(n
fHp.3 fileSplitterFetch.start(); "Y^Fn,c } 3)>re& // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 11QZ- ^ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); & ;5f/ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", KQ9w>!N[ nEndPos = " + nFileLength); dbEXlm // fileSplitterFetch[nPos.length-1].start(); EmUt/] +|S)Mm8- :n~Mg{j3 //等待子线程结束 Z-CA9&4Uh //int count = 0; }T}c%p //是否结束while循环 wsrdBxd5 boolean breakWhile = false; !p\
@1? Iw?^ #+6j-^<_6 while(!bStop) M-Vz$D/aed { J:uFQWxZ
write_nPos(); ) xV>Va8) Utility.sleep(500); ;dZZOocV1 breakWhile = true; 3VMaD@nYa [m< jM[w{ ^oC>,%7 for(int i=0;i<nStartPos.length;i++) *j,noHUT~> { h8.(Q`tli if(!fileSplitterFetch.bDownOver) (]mBAQ#hw { |,n(9Ix breakWhile = false; !Y UT* break; _z]v;Q } ?t\GHQ$$? } L28wT)D- if(breakWhile) G^ <m0ew| break; m>[G-~0?kI $@{d\@U 15|gG<- //count++; \N? lG q //if(count>4) $i8oLSRV // siteStop(); 874j9ky[ } ri3*~?k00 I`@>v%0 56C'<# System.err.println("文件下载结束!"); c2GTN " } tQxAZ0B^ catch(Exception e){e.printStackTrace ();} SJ8
~:"\P } [UdJ(cGf @Py'SH!- +m}D.u*cp //获得文件长度 /NPx9cLW^ public long getFileSize() bS|h~B]rd { vsA/iH. int nFileLength = -1; Y>nQ< try{ ?gK|R URL url = new URL(siteInfoBean.getSSiteURL()); A5}N[|z HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); A$P Oc< httpConnection.setRequestProperty("User-Agent","NetFox"); :%fnJg( |t$%kpp \dB z-H'@ int responseCode=httpConnection.getResponseCode(); /^si(BuC^* if(responseCode>=400) bWCtRli} { "0>AefFd# processErrorCode(responseCode); JGhK8E
return -2; //-2 represent access is error s/;S2l$` } nGJ+.z X*)DpbWd "[_gRe*2 String sHeader; +WxD=|p; 70R_O&f-k se _Oi$VZ{ for(int i=1;;i++) oC!z+< { *L<<S=g$2 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); O+DYh=m*p //Utility.log(in.readLine()); EUPc+D3 sHeader=httpConnection.getHeaderFieldKey(i); &]KA%Db2 if(sHeader!=null) )DQcf]I { R C!~eJG! if(sHeader.equals("Content-Length")) '2p,0Bk9i { (
~>-6Nb 5 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); cGg~+R2P break; )h%tEY$AJ } IV`+B<3 } pe\]}& else #("E)P break; N71%l } UQT=URS } Qyj:!-o catch(IOException e){e.printStackTrace ();} ~NK|q5(I catch(Exception e){e.printStackTrace ();} &x[V<Gq SQG9m2 %$R]NL| Utility.log(nFileLength); p"Di;3!y! ir;az{T#U lxLEYDGFS return nFileLength; }SW>ysw'm } FCt %of# N<HJ}geC" [:{HX U7y //保存下载信息(文件指针位置) l4E0/F private void write_nPos() Gd[:&h { D'_w
* try{ _s0;mvz' output = new DataOutputStream(new FileOutputStream(tmpFile)); Yc>.P output.writeInt(nStartPos.length); =|3*Y0 for(int i=0;i<nStartPos.length;i++) y>JSo9[@ { cs Gd}2VE // output.writeLong(nPos); ]RI+:f output.writeLong(fileSplitterFetch.nStartPos); KN\tRE output.writeLong(fileSplitterFetch.nEndPos); ]6?6 k4@ } `+T"^{
Z output.close(); -h&KC{Xab } oMb@)7 catch(IOException e){e.printStackTrace ();} V.kf@ catch(Exception e){e.printStackTrace ();} R\lUE,o]<q } Wtj*Z.=: qZh}gu*> z7O$o/E-* //读取保存的下载信息(文件指针位置) c"S{5xh0& private void read_nPos() 2?(dS { p y%RR*4# try{ X:OUu; DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Jw
-3G3h int nCount = input.readInt(); /G!M\teeF nStartPos = new long[nCount]; jtQ} nEndPos = new long[nCount]; <3[0A;W=1 for(int i=0;i<nStartPos.length;i++) *skmTioj& { 0{.[#!CSk nStartPos = input.readLong();
o+FDkqEN nEndPos = input.readLong(); ![aa@nOSa } CdNb&Nyz input.close(); 3|1v)E } 63pd W/\j catch(IOException e){e.printStackTrace ();} ]R]%c*tA catch(Exception e){e.printStackTrace ();} '0jn|9l58 } _ v3VUm# *f3?0w 7E\k97#G private void processErrorCode(int nErrorCode) /yTPb { Na$[nv8qh System.err.println("Error Code : " + nErrorCode); Ws:MbZyr } 5/m}v'S% 'DtC= 9%^O-8! //停止文件下载 <4%vl+qW public void siteStop() |sPUb;&~ { o6)U\z bStop = true; >AUzsQ for(int i=0;i<nStartPos.length;i++) ow K)]t fileSplitterFetch.splitterStop(); fsUZG6 VqnM>|| F%G} >xn } `clp#l.ii } a<lDT_2b //负责部分文件的抓取 9}aEV 0 V| **FileSplitterFetch.java i&\cDQ 3 */ O#x=iZI package NetFox; -s9()K(vZG Jqz K5)
t-)d*|2n}o import java.io.*; zAH6SaI$ import java.net.*; cng166}1A Pd;G c@'~ ZP9x3MHe public class FileSplitterFetch extends Thread { 4XIc|a Aa WlmkM?@ w
L4P-4' String sURL; //File URL eR:C?v long nStartPos; //File Snippet Start Position EjP9/VG@= long nEndPos; //File Snippet End Position d VyT ` int nThreadID; //Thread's ID ~ ;ObT= boolean bDownOver = false; //Downing is over Ar'k6NX boolean bStop = false; //Stop identical %`}nP3 FileAccessI fileAccessI = null; //File Access interface 5+a5pC /o9
0O& nfksi``Vq public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException )8;At'q} { x%T.0@!8 this.sURL = sURL; 1G)I|v9R this.nStartPos = nStart; 5Kw?# this.nEndPos = nEnd; |G/WS0 nThreadID = id; -9(pOwN
|m fileAccessI = new FileAccessI(sName,nStartPos);//定位 fw)Q1"| } }/MmuPp (h'Bz6K aATNeAR public void run() L5r02VzbD { DcN!u6sJ while(nStartPos < nEndPos && !bStop) 'zOB!QqA`v { U<<XeSp bD.KD)5 i(>
WeC+ try{ 8&yI1XM| URL url = new URL(sURL); 17-B'Gl!<% HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); B_
bZa httpConnection.setRequestProperty("User-Agent","NetFox"); :Q8*MJ3&V String sProperty = "bytes="+nStartPos+"-"; ~bsdy2&/q httpConnection.setRequestProperty("RANGE",sProperty); D!&]jkUN Utility.log(sProperty); I>{o]^xw-D 6B+?X5-6DH zxkO&DGRbN InputStream input = httpConnection.getInputStream(); aNP\Q23D //logResponseHead(httpConnection); d'iSvd. <Yg6=e ~ +h4i' byte[] b = new byte[1024]; a[p$e?gka int nRead; 8*Ty`G&v while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) S_?sJwM { MV]`[^xQ5 nStartPos += fileAccessI.write(b,0,nRead); oRZe?h^r# //if(nThreadID == 1) J&&)%&h'I // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); NS-0-o|4# } Iw?*y.z| \i+Ad@) &OA6Zw/A Utility.log("Thread " + nThreadID + " is over!"); FC
WF$'cO bDownOver = true; u U%Z%O //nPos = fileAccessI.write (b,0,nRead); YQb503W"d~ } sDAP'& catch(Exception e){e.printStackTrace ();} ubRhJ~XB } BS(jC } q;*'V9# bM.$D-?dF* e=3C*+lq\ //打印回应的头信息 2_ 1RJ public void logResponseHead(HttpURLConnection con) &XCP@@T { 8 Vf#t!t for(int i=1;;i++) f@[)*([ { TU':Rt String header=con.getHeaderFieldKey(i); UA4c4~$S if(header!=null) T?RN} @D //responseHeaders.put(header,httpConnection.getHeaderField(header)); aRElk&M Utility.log(header+" : "+con.getHeaderField(header)); ] >1`Fa6_ else :,fT^izew break; ^VW]Qr! } $B7c\MR
j } r+h%a~A#> oUO3,2bn ~`="tzr: public void splitterStop() ]#W7-Q;] { ?XP4kjJ bStop = true;
;u[:J } [+QyKyhTO 0U:X[2|) Hzj8o3 } v 2p Ijap%l1I m.!LL]] /* 5*+DN
U@ **FileAccess.java `Tf}h8* *//文件访问(定位,写) LT>_Y`5> package NetFox; d2V\T+= import java.io.*; P{9wJ< 8)>T>-os dQ~GE}[ public class FileAccessI implements Serializable{ cJbv,RV< tzfyS#E //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 qA\&%n^j] RandomAccessFile oSavedFile; ,X1M!' long nPos; ah
f,- ?S U<;{_!] {[`(o
0@( public FileAccessI() throws IOException ^*4#ZvpG2 { mtkZF{3Jx this("",0); QV.>Cy } a'/C)fplL A,t g268 J%|; public FileAccessI(String sName,long nPos) throws IOException _>]/. w2= { Y0kcxpK/ oSavedFile = new RandomAccessFile(sName,"rw");
`xHpL8i$5 this.nPos = nPos; 8(l0\R,%+z oSavedFile.seek(nPos); ZMZWO$"K1 } YgjW%q aMGh$\Pg fZr{x$]N0 public synchronized int write(byte[] b,int nStart,int nLen) qTRP2rH,L& { rPBsr<k#5 int n = -1; :RukW.MR try{ DJ7ak>"R
oSavedFile.write(b,nStart,nLen); qdwo 2u n = nLen; wJJ|]^0. } #<B?+gzFM{ catch(IOException e) +X+R8 { ~Q
Q1ZP3 e.printStackTrace (); 568M4xzi } :Zkjtr.\ <dE~z] P ==?%]ZE8 return n; #:yAi_Ct } Z.Z31yF:f [h-NX jg'"?KSU~ } Z L0k LgX2KU" L\"wz scn /* a6ryyt 5 **SiteInfoBean.java .pe.K3G& */ /6[vF)& package NetFox; c)N_"#& bA Yp } 2B6u)
95 public class SiteInfoBean { 7Dl^5q.| B/K=\qmm .Jg<H %%f private String sSiteURL; //Site's URL 4IB`7QJq private String sFilePath; //Saved File's Path n} !')r private String sFileName; //Saved File's Name {yT<22Fl private int nSplitter; //Count of Splited Downloading File @ YWuWF ]
s 2ec []N&,2O public SiteInfoBean() g0a!auWM {//nSplitter的缺省值为5 k5bv57@ //default value of nSplitter is 5 qFDy)4H) this("","","",5); 2,B^OZmw } pp*MHM)x|q ASMItT }3XjP55 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) s5{H15 { xDekC~Zq sSiteURL= sURL; 9"1=um= sFilePath = sPath; oz:J.<j24Z sFileName = sName; ujX\^c this.nSplitter = nSpiltter; /i Xl]< 1y U!rEH I 6<LKI/ } U:MZN[Cc[ FU}- .Ki e*(
_Cvxp public String getSSiteURL() iK'A m.o+ { p((. (fx return sSiteURL; T}XJFV } r[kHVT8 Ud>hDOJ3 e1bV& public void setSSiteURL(String value) e*Nm[*@UW { UQ^
)t
] sSiteURL = value; 98<^!mwF } _Bn8i( 5y0LkuRR: [czWUD public String getSFilePath() }!s$
/Kn { r[j@@[)" return sFilePath; I]m&h! } cx)x="c l~kxK.Ru b_~KtMO public void setSFilePath(String value) &\/}.rF { rHjR 4q sFilePath = value; }_Sgor83n } ;%u)~3B$JK W"xRf0\V : NH'>' public String getSFileName() #?\|)y4i { cetlr return sFileName; uA%F0oM } )GC[xo4bg 6XVJ/qZ \nV oBW( public void setSFileName(String value) zq#gf { *q Ins/@ sFileName = value; +w@/$datI } O}lqY?0* n^epC>a" b $:D hK public int getNSplitter() _j_c& { QO,ge<N+N return nSplitter;
bqR0./V } OPKmYzf@b 90$`AMR ]b&qC
( public void setNSplitter(int nCount) V3\}]5 { !{oP'8Ax$ nSplitter = nCount; >LR+dShG } kca Y } pC)S9Kl qSL~A- UDa\* /* 04z2gAo **Utility.java GwlAEh P */ pM@0>DVi package NetFox; H*dQT y, kI$X~s$r MXpj_+@ public class Utility { ( e(<4-& <.6$zcW C
F< public Utility() ;0++):30V { }EHmVPe 8,(5Q rw dj } 8c'E DcLx[C //线程睡眠 j2{ '! public static void sleep(int nSecond) $;+`sVG { Bbx.RL.V try{ "PPn^{bYm Thread.sleep(nSecond); [kq+a]q } [ 5kaF" catch(Exception e) C{):jH,Rf { v~>4c<eG
e.printStackTrace (); -{fbZk&A } +EgQj*F* } %7rWebd- ^k?Ig.m //日志 <El6?ml@ public static void log(String sMsg) F D6>[W { Kth^WHL System.err.println(sMsg); )zVD!eG_9 } "ealYveu "n@=.x mYzq[p_|j public static void log(int sMsg) C"ZCX6p+$ { 7nHlDPps) System.err.println(sMsg); XA:v:JFS } /z+}xRS } `795K8 %k3a34P@ 5fBW#6N/ /* u37@9 **TestMethod.java %8+'L4 */ "U& package NetFox; PF-
sb&q S<LHNZu|^A PTvP; public class TestMethod {
D|n`9yv a w_I}FPT<(: 2,<!l(X public TestMethod() w]\O3'0Js { ///xx/weblogic60b2_win.exe LE!3'^Zq try{ c>r0N[ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); {j
E}mzi //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 3&-BO%i SiteFileFetch fileFetch = new SiteFileFetch(bean); h^bbU. fileFetch.start(); F/}PN1#T } ^r$P&}Z\b catch(Exception e){e.printStackTrace ();} [ua{qJ9 Jh[fFg] u*&wMR>Crf } b07 MTDFH7 -q\1Tlc]3 / '}O-h public static void main(String[] args) 9[B*CD| { V5RfxWtm: new TestMethod(); aC$hg+U$G } ek#{!9- } f|_iHY
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