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/* O^QR;<t' **SiteFileFetch.java ~EM#Hc, */ O+CF/ipX/ package NetFox; eY0Ly7 import java.io.*; 5^G7pI7 import java.net.*; N[|by}@n h$#4ebp (.jO:#eE% public class SiteFileFetch extends Thread { ?^e*UJNM e
B9m4 ;j[q?^ b SiteInfoBean siteInfoBean = null; //文件信息Bean m?
\#vw$ long[] nStartPos; //开始位置 G#_(7X& long[] nEndPos; //结束位置 :epitpJ FileSplitterFetch[] fileSplitterFetch; //子线程对象 e8WPV long nFileLength; //文件长度 +lY\r + ; boolean bFirst = true; //是否第一次取文件 :Su 5 boolean bStop = false; //停止标志 OF<[Nh\. File tmpFile; //文件下载的临时信息 -y7l?N5F> DataOutputStream output; //输出到文件的输出流 ex;Yn{4 s+OvS9et_ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) NKIk d public SiteFileFetch(SiteInfoBean bean) throws IOException 'ugR!o1 { BP7<^`i& siteInfoBean = bean; yKX:Z4I/ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); vZ1D3ytfG tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); s5_1}KKCs if(tmpFile.exists ()) ^^j|0qshL { J8`1V`$ bFirst = false; Q rrZF. read_nPos(); OI;L9\MJc } g%<{G/Tz else <uWJ>sg^6 { Gc3PN nStartPos = new long[bean.getNSplitter()]; P~b%;*m}8 nEndPos = new long[bean.getNSplitter()]; vl#V-UW$4P } 9fr&Yb=_o@ <E(-QJ o$qFa9|Ec? 9I^H)~S } S%a}ip& 9v5.4a} x r+E public void run() <+mO$0h"r { 5jj57j" //获得文件长度 %o SfL;W7 //分割文件 MO(5-R` //实例FileSplitterFetch MRxo|A{ //启动FileSplitterFetch线程 Vt$ $ceu //等待子线程返回 T8M[eSbZ try{ 5BGv^Qb_2 if(bFirst) <try%p|f { /ab K/8ZQ
nFileLength = getFileSize(); =:0IHyB#0 if(nFileLength == -1) ej??j<] { G%W03c System.err.println("File Length is not known!"); v~W6yjp } +(=[M]5#n else if(nFileLength == -2) @N:3`[oB { m8j#{[NE System.err.println("File is not access!");
:jN;l } G41$oalQ1 else G1n>@Y'j'' {
hE?GO, for(int i=0;i<nStartPos.length;i++) })yb
{ .bY1N5=sz nStartPos = (long)(i*(nFileLength/nStartPos.length)); +MZ2e^\F } 'KW+Rr~tZn for(int i=0;i<nEndPos.length-1;i++) 7u&H*e7 { a7 '\* nEndPos = nStartPos[i+1]; =fu_ Jau} } _tg3%X] nEndPos[nEndPos.length-1] = nFileLength; lfI7&d* } ]T28q/B;k } b^|,9en ?),K=E+=U 5D q{"@E //启动子线程 r0XGGLFuZl fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; >=RHE@ for(int i=0;i<nStartPos.length;i++) ~A{[=v { K`AW?p^$Y fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^,\se9=( siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), H"Em|LX^ nStartPos,nEndPos,i); :fMM-?s] Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [+[fD fileSplitterFetch.start(); 7C6BZ$( } %%-Tjw o // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9"l%tq_ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9ixnf=$Jp // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", G#=b6DB nEndPos = " + nFileLength); S3[oA& // fileSplitterFetch[nPos.length-1].start(); L:]; [xa% hF?\K^tF e1Z;\U$&. //等待子线程结束 #xE>]U //int count = 0; s9)8{z //是否结束while循环 hrtN.4p[ boolean breakWhile = false; %>QSeX e[Ul"pMvS` l=.InSuLT while(!bStop) DyV[+P { (j\UoKLRt write_nPos(); TTjjyZ@ Utility.sleep(500); Y{\2wU!Isn breakWhile = true; m]b.P,~v +r34\mAO i_Q4bhVj for(int i=0;i<nStartPos.length;i++) r'}k`A5> { P|QnZ){ if(!fileSplitterFetch.bDownOver) YJ;a{)e { _a02# breakWhile = false; "q#g/T break; yyYbB ]D } s</ktPtu } iS^^Z ZyR if(breakWhile) (5\d[||9g break; /-} p7AM /:];2P6#X $[9V'K //count++; PfMOc+ q //if(count>4) t3kh]2t // siteStop(); |x~ei_x7.p } LB 5EGw UmHb-uk ; >Sl:Z ,g; System.err.println("文件下载结束!"); Sv[_BP\^h } XcW3IO catch(Exception e){e.printStackTrace ();} Op)R3qt{ } o3`gx 5L'@WB|{4u fxCPGj //获得文件长度 5EZr"[8M public long getFileSize() Pxuz { { N =}Z# int nFileLength = -1; RyIaT try{ 5nlyb,"^g URL url = new URL(siteInfoBean.getSSiteURL()); "Kf~`0P HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); AZm)$@e) httpConnection.setRequestProperty("User-Agent","NetFox"); oA^
]x> JL+[1=uE1L )eVDp,.^ int responseCode=httpConnection.getResponseCode(); "g&l~N1$ if(responseCode>=400) 5+PBS)pJ]% { /VOST^z! processErrorCode(responseCode); RAJ|#I1 return -2; //-2 represent access is error Kwmo)|7uPU } ;bu;t# '48|f`8$ eh#
(}v String sHeader; - cC(d$y olW`.3f _p^ "! for(int i=1;;i++) w\[*_wQp { sJ*U Fm{ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); vG=$UUh@~ //Utility.log(in.readLine()); *`/@[S2,cu sHeader=httpConnection.getHeaderFieldKey(i); gG|1$ if(sHeader!=null) 8c'-eT" { ~.=HN}E if(sHeader.equals("Content-Length")) g0U\AN { Wam?(!{mOf nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Jywz27j break; o%s}jBo} } 246!\zf } JaN_[ou else hndRgCo break; JHOBg{Wg } mAERZ<I } 6>^k9cJp catch(IOException e){e.printStackTrace ();} P_Ja?)GT catch(Exception e){e.printStackTrace ();} Ol^EQLO icbYfgQ y^fU_L?p Utility.log(nFileLength); |I<-x)joIK ^d=@RTyo/ / =<ul-K return nFileLength; t|,Ex 7 } %HS!^j3C% {;~iq Z0@ImhejuB //保存下载信息(文件指针位置) +F6_P private void write_nPos() QAw,X Z.K^ { ZOsn,nF try{ `cRB!w=KHV output = new DataOutputStream(new FileOutputStream(tmpFile)); c3BL2>c output.writeInt(nStartPos.length); S}I=i>QB for(int i=0;i<nStartPos.length;i++) {iteC { 1Ac1CsK* // output.writeLong(nPos); g0$k_ output.writeLong(fileSplitterFetch.nStartPos); f@g output.writeLong(fileSplitterFetch.nEndPos); n#,l&Bx } CplRnKra output.close(); CR=MjmH } %P6!vx:&^b catch(IOException e){e.printStackTrace ();} N*-Z Jv catch(Exception e){e.printStackTrace ();} +5\\wGo< } ,_-*/- 7;8 d8I:F9 ]jrxrUl //读取保存的下载信息(文件指针位置) fL:Fn"Nv private void read_nPos() BS.6d}G4 { .`RC,R`C try{ %05a>Rf& DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); _L.yt5_ int nCount = input.readInt(); v%Xe)D nStartPos = new long[nCount]; "xI[4~'`: nEndPos = new long[nCount]; ,6L>f.V^(U for(int i=0;i<nStartPos.length;i++) |g!#
\ { ~(S4/d5 nStartPos = input.readLong(); "|rqt.f2[ nEndPos = input.readLong(); U]$3NIe } 1\kehCt input.close(); u'."E7o# } GC3L2C0)k catch(IOException e){e.printStackTrace ();} 8B9zo& catch(Exception e){e.printStackTrace ();} 4Fq}*QJ- } .9QQ]fLs %q^]./3p v\FD~ private void processErrorCode(int nErrorCode) SsZzYj.d { -/?<@*n System.err.println("Error Code : " + nErrorCode); '_Op rx } 5w9<_W0d 'h=2_%l@Y RMXj)~4. //停止文件下载 b5R*] public void siteStop() Y6a|\K| { J_$~OEC~ bStop = true; bS<p dOX_ for(int i=0;i<nStartPos.length;i++) 0rUf'S
?K fileSplitterFetch.splitterStop(); @9a=D<'> s,x]zG" eW%jDsC } RdHR[Usm } `Mg
"!n` //负责部分文件的抓取 eo[^ij **FileSplitterFetch.java 7m:, -xp */ }XU- JAn package NetFox; UJ:B:hh'' j C? (0S7 import java.io.*; rJ>8|K[kt import java.net.*; f6) H!SI ^Du_e(TiyK 2hP8ZfvIR public class FileSplitterFetch extends Thread { WTx;,TNG a6_`V; 'iK0Wr String sURL; //File URL uip]K{/A!e long nStartPos; //File Snippet Start Position rg\w!L( long nEndPos; //File Snippet End Position #4>F%_ int nThreadID; //Thread's ID ` 0F
IJT boolean bDownOver = false; //Downing is over yM@cml6Ox boolean bStop = false; //Stop identical mr? ii FileAccessI fileAccessI = null; //File Access interface \mloR
' '>BHwc
0saEcJ- public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException v]~[~\|a { [qB=OxH? this.sURL = sURL; @$]h[ this.nStartPos = nStart; QR4o j this.nEndPos = nEnd; f`e.c_n( nThreadID = id; >Mn.|:DF]& fileAccessI = new FileAccessI(sName,nStartPos);//定位 R0[Gfq9M= } oLoa71Q} 0P 42C{>'w bkTj
Q public void run() ojri~erJE? { lRb)Tz6SE while(nStartPos < nEndPos && !bStop) |a+8-@-Tj { 2 6A#X 65v'/m!ys ~WSC6Bh@9 try{ |wx1
[xZ URL url = new URL(sURL); al/~ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); c@`P{6 httpConnection.setRequestProperty("User-Agent","NetFox"); Wj&s5;2a String sProperty = "bytes="+nStartPos+"-"; &n|gPp77$ httpConnection.setRequestProperty("RANGE",sProperty); *O~D lf Utility.log(sProperty); G`jhzG >\ W" 3. 0dW1I|jR InputStream input = httpConnection.getInputStream(); gK /K Z8 //logResponseHead(httpConnection); 4)_ [)MZ\j OuoZd!"qf $)3/N&GXR byte[] b = new byte[1024]; {+;8dtZ)x int nRead; V.J%4&^X while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ZfU_4Pl-> { @u^Ib33 nStartPos += fileAccessI.write(b,0,nRead); 43Q&<r$[T //if(nThreadID == 1) <9"i_d% // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); CJ_B. } Z5Cv$bUc 4/b#$o<I? f[w$3 Utility.log("Thread " + nThreadID + " is over!"); y4') !e bDownOver = true; IWkBq]Y //nPos = fileAccessI.write (b,0,nRead); })B)-8 } ^:BRbp37i catch(Exception e){e.printStackTrace ();} \MU4"sXw } PA E)3 } L<:ya dx^3(#B yAOC<d9 E //打印回应的头信息 o9/P/PZ\X public void logResponseHead(HttpURLConnection con) WKG=d]5 { 39"'Fz?1 for(int i=1;;i++) bpkn[K"( { wP%;9y2B String header=con.getHeaderFieldKey(i); <:?&}'aA if(header!=null) X*T9`]l6 //responseHeaders.put(header,httpConnection.getHeaderField(header)); &("?6%GC Utility.log(header+" : "+con.getHeaderField(header)); rO
NLbrj else Hl#o& *Ui" break; 3]'3{@{}H }
#xmUND`@ } *jYwcW"R{z -&c@c@dC {PU[MHZF public void splitterStop() ]n{2cPx5d { xsfq[}eH< bStop = true; , Le_PJY) } -I -wdyDr ZrTq)BZ thh, V } ?F-,4Ox{/ 1xw},y6T2 Z1Ms~tch /* :!%oQQO **FileAccess.java X**wRF *//文件访问(定位,写) R{T4AZ@,' package NetFox; 6c2fqAF>i import java.io.*; F?UL0Q|u v \1tce`+ txi
m|) public class FileAccessI implements Serializable{ !54%}x)3 HjK|9 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ^3el-dZ RandomAccessFile oSavedFile; O&}0 7( long nPos; As"'KR +/ #J]v- `p!.K9r7 public FileAccessI() throws IOException 4o%hH { toF@@% this("",0); pRC#DHcHh } y"2c; *7[{ -/h$Yb qB8<(vBP+ public FileAccessI(String sName,long nPos) throws IOException u",
[ulP { w'UP#vT5& oSavedFile = new RandomAccessFile(sName,"rw"); "MyYu}AD this.nPos = nPos; U8moVj8w1 oSavedFile.seek(nPos); Fr3Q"( } UPbG_ #"wZ oL<^m?-u jildiT[s public synchronized int write(byte[] b,int nStart,int nLen) 0py0zE6,, { 7Q^t( int n = -1; poM VB{U try{ c^m}ep\F5L oSavedFile.write(b,nStart,nLen); ]+J]}C]\d n = nLen; wt-)5f'{ } 6n>+cX>E catch(IOException e) f}o`3v*z { &Uzg&eB e.printStackTrace (); CnJO]0Op3 } 3Y>!e# M*%iMz :[,n`0lH return n; v\Q${6kEtx } Qp{{OjD N'TL &] <
=sO@0(< } 1XwbsKQ} )bqO}_B xaejG/'iK /* EFV'hMjS) **SiteInfoBean.java {G_ZEo#x8, */ gR%fv package NetFox; {5:y,=Y l,L#y4# 7?e*b(vd public class SiteInfoBean { 5_{C \S`T qY0p)`3!% `5Q0U%`W private String sSiteURL; //Site's URL sAWUtJ private String sFilePath; //Saved File's Path
"Qm private String sFileName; //Saved File's Name !fjDO!,! private int nSplitter; //Count of Splited Downloading File .XTBy/(0 JuS#p5E # X&pK#= public SiteInfoBean() Z_Hc":4i {//nSplitter的缺省值为5 le`fRq8f& //default value of nSplitter is 5 /{^Qup this("","","",5); wm!Y5 } l>Z"y\l= `VwZDU~6 Z-.`JkKd8 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) N!{('po { ;i@,TU sSiteURL= sURL; *{/BPc0* sFilePath = sPath; <x *.M"6? sFileName = sName; 3a_~18W this.nSplitter = nSpiltter; *xI0hFJIM S2'./!3yv *shE-w;C } l`M{Ravvn* '
cR||VX >/9f>d?w^ public String getSSiteURL() sEm-Td+A5 { TFjb1a,) return sSiteURL; 1Ue)&RW } 9(V12gn+lk 4"U/T1& ZF!cXo7d public void setSSiteURL(String value) w3WBgH { $F"'=+0 sSiteURL = value; XvETys@d } +twl`Z3n eg!s[1[_ ?Dm={S6 public String getSFilePath() R~
n[g { %/iD@2r return sFilePath; 0h=NbLr|S- } ;+jz=9Q- KcKdhqdN- |qTvy,U[ public void setSFilePath(String value) |Lf>Z2E { 2t
7':X sFilePath = value; a|S6r-_;s } AUjZYp F#Y9 @E j.or:nF public String getSFileName() 1seWR" { I8};t b# return sFileName; R `K1L!`3 } qHVZsZ &`x1_*l +;,65j+n
public void setSFileName(String value) Ql>bsr} { `4IZ4sPi sFileName = value; 'aV])(Wm> } 4,EX2 "xWrYq'" zD^*->`p public int getNSplitter() T8^`<gr. { Mbm'cM&} return nSplitter; wCQ.?*7-9Q } 65 ]>6D43 (}B3df ~}"5KX\=# public void setNSplitter(int nCount) _p*a`,tK { xqSoE[<v nSplitter = nCount; ,{6Vf|? } !(gMr1}w } &c[ISc>N{ MD9 8N{+[| h;[<4zw /* (zr2b **Utility.java PQj 'D<G */ ;SgPF:T>Q package NetFox; -kk0zg
&|i ~Z`Cu~7 \X2r? public class Utility { ctOBV 9 1.gE*D 8AVtUU public Utility() WhT5NE9t { N&yr?b'!-* {nPiIPH A('o&H } *qZBq&7tb t
i&!_ //线程睡眠 icK$W2<8mg public static void sleep(int nSecond) ;#bDz}|\AN { eC3 ~| G_O try{ =odK i "-6 Thread.sleep(nSecond); 7#&e0fw/I } w2SN=X~# catch(Exception e) &g"`J` { _v[gJ(F e.printStackTrace (); cJE4uL< } 0`/CoP<U } []jbzVwS2 11vAx9 //日志 Te%V+l public static void log(String sMsg) 'gtcy { K&VMhMVb System.err.println(sMsg); d#HlO} } 7,s5Gd- Dz&,g+>$J [<|$If99\ public static void log(int sMsg) sXmP<c { ||L^yI~_d System.err.println(sMsg); )Ma/]eZ^I } iR"6VO } v\@pZw=x #KNl<V+c}1 {FX]1: /* 7p-
RPC **TestMethod.java ,D'm#Fti */ S,EL=3},= package NetFox; t3AmXx on;>iKta9 UfIr"bU6 public class TestMethod { )PkW,214# _e/Bg~ t,n2N13 public TestMethod() XG!6[o; { ///xx/weblogic60b2_win.exe c39j|/!;Y try{ l<p<\,nV$ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ftKL#9,s( //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); !"o\H(siT SiteFileFetch fileFetch = new SiteFileFetch(bean); ^ir)z@P?V fileFetch.start(); /+*N.D'`t, } Fv*QcB9K catch(Exception e){e.printStackTrace ();} -k@1#c+z f5p/cUzX ]28j$)6
} /M'd$k"0z ;l1.jQh ?pcbso public static void main(String[] args) *dxm|F98 { c%WO#}r| new TestMethod(); (@qPyM6~} } ]Y-Y.&b7t } ;aj;(Z.p) 点击下载更多相关资料
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