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/* __9FQ{Ra **SiteFileFetch.java &mVClq */ e`g+Jf`AT package NetFox; y@~ VE5N import java.io.*; 4RVqfD import java.net.*; *w4#D:g S:j{R^$k %P s.r{%{ public class SiteFileFetch extends Thread { Vq]ixag2^ i;9X_?QF H%Gz" SiteInfoBean siteInfoBean = null; //文件信息Bean Qf^c}!I long[] nStartPos; //开始位置 ;&6
{c long[] nEndPos; //结束位置 U$gR}8\e FileSplitterFetch[] fileSplitterFetch; //子线程对象 o|h=M/ long nFileLength; //文件长度 oFP8s[B boolean bFirst = true; //是否第一次取文件 85G-`T boolean bStop = false; //停止标志 (+(@P*c1 File tmpFile; //文件下载的临时信息 o=7,U/{D! DataOutputStream output; //输出到文件的输出流 6ScB:8M GB Yy^wjU //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) E&kv4, public SiteFileFetch(SiteInfoBean bean) throws IOException Y|r7gy9% { kR97)}Y siteInfoBean = bean; dX/7n= //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Oe\(=R tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); YdO*5Gb6 if(tmpFile.exists ()) tWy.Gz\ { pt.V^a bFirst = false; ZN)EbTpc\a read_nPos(); <(>t"< } 9.\SeJ8c else *`"+J_ { #'1dCh
vZ nStartPos = new long[bean.getNSplitter()]; /Z?o%/bw: nEndPos = new long[bean.getNSplitter()]; P05`DX}r, } -V{"Lzrfug 7d%x 7!E kqih`E9P7B Skci;4T( } 7\%JJw6h 1Mp-)-e HBe*wk Pd public void run() Sk+XBX(} { C `_/aR6 //获得文件长度 i,ZEUdd*_ //分割文件 2k<#e2 //实例FileSplitterFetch 8_4!Ar>2 //启动FileSplitterFetch线程 e%)iDt\j //等待子线程返回 B;N<{Gb try{ 082iEG if(bFirst) bC:sd2s { RKzty=j4 nFileLength = getFileSize(); [pTdeg;QE if(nFileLength == -1) -W^{)%4g { $]_SPu System.err.println("File Length is not known!"); rwXpB<@l@ } 03 gbcNo else if(nFileLength == -2) EP@u4F { kll!tT-N- System.err.println("File is not access!"); QG?!XWz } _[&V9Jt else N,qo/At}R[ { }_KzF~ for(int i=0;i<nStartPos.length;i++) 0yC~"u[N Y { !1I# L!9 nStartPos = (long)(i*(nFileLength/nStartPos.length)); )M0(vog } 6k;5T for(int i=0;i<nEndPos.length-1;i++) "|Q.{(|kO1 { E<+ G5j nEndPos = nStartPos[i+1]; ~{lb`M^]h } :5/Ue,~ag nEndPos[nEndPos.length-1] = nFileLength; EF:ec9 . } BkB_?^Nv8 } M}[Q2v\ Rs"=o>Qu 6agG*x //启动子线程 8a8a:d fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 36OQHv;& for(int i=0;i<nStartPos.length;i++) SeXgBbGAne { xK_UkB-$i fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9k71h`5 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), `{{6vb^g nStartPos,nEndPos,i); UZs '[pm) Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Jkj7ty.J fileSplitterFetch.start(); kl:/PM^ } Ywhhs
}f // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), qX\85dPn@} siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); VC/n}7p // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ]*| hd/j nEndPos = " + nFileLength); #sCR} // fileSplitterFetch[nPos.length-1].start(); wnd
#J ` m-uXQS^@G Vc9Bg2f5 //等待子线程结束 ":+d7xR?o //int count = 0; </_QldL_ //是否结束while循环 ,H6P% boolean breakWhile = false; zNo,PERG @Ik5BT J&\Q3_vro9 while(!bStop) \wz^Z{U { IQ\!wWKmY write_nPos(); ^}$t(t Utility.sleep(500); >4wigc breakWhile = true; i/_rz.c~3 f91]0B`C >mA]2gV<a for(int i=0;i<nStartPos.length;i++) @xo8"kl { 'L O3[G{ if(!fileSplitterFetch.bDownOver) -S]ercar { A nl1+ breakWhile = false; I(VqtC:K. break; axC{azo| } hJ8&OCR } } }\<=B%{
if(breakWhile) *3Lo[GE> break; ;q-c[TZC -5og)ZGVUA ^jL)<y4` //count++; ]g$ky.; //if(count>4) 46T(1_Xt~ // siteStop(); ~`e!$= } ' u<I S/w +$ djX=3 6,LE_ -G5 System.err.println("文件下载结束!"); BKTTta1mY } xS@jV6E~ catch(Exception e){e.printStackTrace ();} (^B1Kt!< } M/W9"N[ta *sp")h#Z wE1 GyN //获得文件长度 />Zfx. Aj6 public long getFileSize() C&0f8PnD { U*K4qJ6U int nFileLength = -1; )( 3)^/Xz try{ t9<BQg URL url = new URL(siteInfoBean.getSSiteURL()); 2d|^$$#` HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0c"9C_7^g httpConnection.setRequestProperty("User-Agent","NetFox"); 2UYtEJ(?`{ 5w>TCx V$DB4YM1k int responseCode=httpConnection.getResponseCode(); AUF[hzA if(responseCode>=400) do^=Oq07$ { c[M4l processErrorCode(responseCode); th*!EFA^o return -2; //-2 represent access is error vh2/d.MO } Yqh-U%"' ES,JdImZ| kPy7e~ String sHeader; !Usmm8!K 1^NC=IS9z 6%t6u3 for(int i=1;;i++) [YlRz { $ H@
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); oAN,_1v) //Utility.log(in.readLine()); p
Cx_[#DrP sHeader=httpConnection.getHeaderFieldKey(i); EK>x\]O%T if(sHeader!=null) >N!
Xey { E5S(1Z}]p{ if(sHeader.equals("Content-Length")) gF9GU5T: { @+~URIG) nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 'U&]KSzxv break; `@\FpV[|P } ?-&k?I } !4^Lv{1QZ else Ye|gW=FUR break; ql.[Uq } u7J:ipyiq2 } M3KK^YRN catch(IOException e){e.printStackTrace ();} -+qg catch(Exception e){e.printStackTrace ();} '$yy r4FSQ$[9w vbd
;Je" Utility.log(nFileLength); \0}bOHqEH 3k6Dbz ZiKO|U@/ return nFileLength; (`Y;U(n } .I{u[
" K
..Pn17t l8M}82_ //保存下载信息(文件指针位置) dcemF private void write_nPos() 7{"F%`7L { Z{ YuX try{ K7x;/O output = new DataOutputStream(new FileOutputStream(tmpFile)); Pj56,qd>s output.writeInt(nStartPos.length); -
]We|{ for(int i=0;i<nStartPos.length;i++) }n^}%GB { _,F\%} // output.writeLong(nPos); MftaT5 output.writeLong(fileSplitterFetch.nStartPos); ZrP
8/> output.writeLong(fileSplitterFetch.nEndPos); B[&l<*O-y } yIpgZ0:h output.close(); #Sy~t{4 } i%f
C`@ catch(IOException e){e.printStackTrace ();} ,,EG"Um6 catch(Exception e){e.printStackTrace ();} U;ujN 8 } !f!YMpN !:vQg+S b+AxTe(" //读取保存的下载信息(文件指针位置) gi:M= private void read_nPos() 5B1,,8P { CucW84H`J try{ @!x7jPr DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); [=-,i#4 int nCount = input.readInt(); o2YHT
\P
n nStartPos = new long[nCount]; kotKKs nEndPos = new long[nCount]; <#Fex'4 for(int i=0;i<nStartPos.length;i++) jtpk5 fJB { H`3w=T+I nStartPos = input.readLong(); <VN< ~sz nEndPos = input.readLong(); DB jUHirK } Q[`2?j? input.close(); .Xxxz
Wyk } "AWk
jdj catch(IOException e){e.printStackTrace ();} &8%^o9sH catch(Exception e){e.printStackTrace ();} Iw$T'I+4W } w3fD6$ JqN$B\J, "$"<AKCwS private void processErrorCode(int nErrorCode) rTC| 8e { P4MP`A System.err.println("Error Code : " + nErrorCode); 6QPbmO]z } w3>G3=b H?ue!5R#L (a,`Y. //停止文件下载 0icB2Jm:D} public void siteStop() JO87rG { ]/R>nT bStop = true; ]YDqmIW for(int i=0;i<nStartPos.length;i++) "tK3h3/Xv fileSplitterFetch.splitterStop(); La^Zr,T! f|!@H>< {qry2ZT5 } Jju?v2y` } 5(\[Gke //负责部分文件的抓取 lm'.G99{ **FileSplitterFetch.java ?K.!^G */ 1Ji"z>H* package NetFox; at3YL[,[Z e
[F33% Uzn import java.io.*; eLyIQo W import java.net.*; wDh&S{N w6B`_Z'f !wrAD"l*@ public class FileSplitterFetch extends Thread { 9I|Q`j?p` {#{nU NW %
e70*; String sURL; //File URL giN(wPgYP long nStartPos; //File Snippet Start Position LR17ilaa' long nEndPos; //File Snippet End Position +hWeN&A int nThreadID; //Thread's ID xJvalb boolean bDownOver = false; //Downing is over mL,{ZL ^ boolean bStop = false; //Stop identical l4^8$@;s FileAccessI fileAccessI = null; //File Access interface ,6U=F#z hn/SS Qbj:^{`>( public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException zWdz9;=_ { m]\d9%-AT& this.sURL = sURL; OL&VisJ{75 this.nStartPos = nStart; NL ceBok this.nEndPos = nEnd; G~4|]^`g nThreadID = id; ht5:kt`F fileAccessI = new FileAccessI(sName,nStartPos);//定位 7nPm{=BG } wi:d!,P`e Rk{2ZUeg AWmJm) public void run() %__.-;)o { l)0yv2[h while(nStartPos < nEndPos && !bStop) .aIFm5N3? { T~N877 D
<Fl7QAb o\yqf:V8 try{ kZ
9n@($B URL url = new URL(sURL); SR\$ fmo HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Fg^zz*e httpConnection.setRequestProperty("User-Agent","NetFox"); [
**F String sProperty = "bytes="+nStartPos+"-"; %{P." ki httpConnection.setRequestProperty("RANGE",sProperty); -| t|w:& Utility.log(sProperty); v-Uz,3 bNz2Uo!0K _ID =]NJ_ InputStream input = httpConnection.getInputStream(); /^Lo@672 //logResponseHead(httpConnection); E!>l@
ki rg+3pX\{ ]h&?^L<. byte[] b = new byte[1024]; z: W1(/W~ int nRead; ~leLQsZ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) :&D$Q
4 { Z@:R'u2Lk nStartPos += fileAccessI.write(b,0,nRead); }pPt- k //if(nThreadID == 1) }Qvoms<k // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wsCT9&p } ok9G 9|HA %6<2~ :20k6 ) Utility.log("Thread " + nThreadID + " is over!"); A}n5dg0u bDownOver = true; AwGDy + //nPos = fileAccessI.write (b,0,nRead); j: B,K.: } 2HvzMo-4 catch(Exception e){e.printStackTrace ();} O Bp/:] } %O&C\{J } 27jZ~Bp$ 0 :1ldU
4 12%4>2}~> //打印回应的头信息 -
e"XEot~ public void logResponseHead(HttpURLConnection con) 1HNX6 { m-!z(vcn for(int i=1;;i++) |teDe6\m { k+&1?] String header=con.getHeaderFieldKey(i); vR\[I V? if(header!=null) _b 8XF&O //responseHeaders.put(header,httpConnection.getHeaderField(header)); Z$a4@W9o Utility.log(header+" : "+con.getHeaderField(header)); z15QFVm else O0<GFL$)& break; ZZl4| } !J@pox-t } `<l|XPv ,TxZ:f`" uv
dx>5] public void splitterStop() A&fh0E (t { c)o[3o7 bStop = true; ]^\+B4 } $JXQn mJ5LRpXN h?:Y\DlU' } Y_Lsmq2! 7QkAr ,s1n!@9 /* ui6B **FileAccess.java r\66]u[ *//文件访问(定位,写) ?|9$o/Q} package NetFox; /L"&'~ import java.io.*; ;42D+q=s QWGFXy,=1 "ae55ft// public class FileAccessI implements Serializable{ yo0?QRT _j2h3lCT //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 CSooJ1Ep~' RandomAccessFile oSavedFile; Iq[,)$ long nPos; $/(H%f& a?!Joi[ NeyGIEP public FileAccessI() throws IOException /`Lki>" { W\<5'9LNb this("",0); HCifO } ,P d2ZfZ [%8+Fa~Wa "]`QQT-{0 public FileAccessI(String sName,long nPos) throws IOException DDhc ^( { |KC3^ oSavedFile = new RandomAccessFile(sName,"rw"); Kn9,N@bU_ this.nPos = nPos; CQ3{'"b oSavedFile.seek(nPos); w65
$ R } _?2xIo t hDE
1h ~dwl7Qc public synchronized int write(byte[] b,int nStart,int nLen) Q$9`QY*6"p { ?Xo9,4V1 int n = -1; X|wXTecg*| try{ #Y*AG xk oSavedFile.write(b,nStart,nLen); F'#e]/V1 n = nLen; .9g\WH#qD| } c~|/,FZU' catch(IOException e) hK$-R1O { y6?Q5x9M e.printStackTrace (); HF\L`dJX? } tI C_/
6 q&
Vt* Yazpfw 7'd return n; 6C/D&+4 } Zy7@"C d*,|?Ar*b VuZmX1x)N } Ck.GN<#-^P tZXtt=M w MOmp{@ /* a Ts_5q **SiteInfoBean.java ^HL#)fK2I */ XfsCu> package NetFox; }wkBa] 5>w>J 1^zF/$% public class SiteInfoBean { gi@+27; Z9aDE@A >8tE`2[i* private String sSiteURL; //Site's URL &:jE+l private String sFilePath; //Saved File's Path nw5#/5xw private String sFileName; //Saved File's Name D0k7)\puQ private int nSplitter; //Count of Splited Downloading File D1O7S]j Vq'&t<K# m9xu$z|e public SiteInfoBean() }}(~' {//nSplitter的缺省值为5 \^-3)*r //default value of nSplitter is 5 ?\#4`9 this("","","",5); 4'rk3nT8 }
6^: l >uJrq""+ c*1x*'j. public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ?I/,r2ODLh { c@q>5fR/c sSiteURL= sURL; l2`8]Qr sFilePath = sPath; T)Nis~ sFileName = sName; >v<}$v6D~ this.nSplitter = nSpiltter; d=4MqX r d$2{_6 "|Q& } ;LrKXp kkOYC?zE? Mc6Cte]3| public String getSSiteURL() nC&rQQFF { @xkM|N? return sSiteURL; _mkI;<d]$T } 3P\I;xM b]g.>$[nX O:BP35z_F public void setSSiteURL(String value) [7s5Vt| { ;Ok11wOw sSiteURL = value; ?<LG(WY } n'h
)(^ w\2[dd r2H'r
,N public String getSFilePath() ;5% &q6&a { UZAWh R return sFilePath; Dk"M8_-_ } 1[Mr2 @ s{:
Mu~v g*tLqV public void setSFilePath(String value) _fyw { 25~$qY_ sFilePath = value; sw@2
?+ } B6pz1P?e} Sl_zO?/PF B]qh22Yib public String getSFileName() ^LcI6h
{ YI|Gpq return sFileName; ?\pE#~m }
Qom@-A /1> D&^:hs@ public void setSFileName(String value) EqmJXDm { BxT~1SBFq sFileName = value; Sd\@Q%
}o\ } 88*RlxU d!LV@</ <V8i>LBlz public int getNSplitter() 7S7! { Y}#^n7*w~ return nSplitter; f:Ja } 'q^Gg;c>+ D8 #q.OR] &Egn`QU public void setNSplitter(int nCount) ?^!dLW { 1!C,pXU#: nSplitter = nCount; Kk(ucO } cU6#^PFu } E0hp%: s*X\%!l9 &B85; /* KN`z68c4L **Utility.java Q+Fw =Xw */ ppD~xg] package NetFox; A X#!9-m3 U`Ag|R A-u5 public class Utility { =iQm_g 0EB'! X]*/]Xx public Utility() .0-m=3mp2 { ykeUS
zz2 Y_B 4s- iLgt_@g } :&-}S>pC :Ir:OD#o //线程睡眠 .:raeDrd public static void sleep(int nSecond) T??aVe]c { *;d)'7< try{ <`*P/V Thread.sleep(nSecond); #]N9/Hij#g } ^k(eRs;K catch(Exception e) kC5,yj { n6Zx0ad? e.printStackTrace (); o5@ jMU; } /#=J`*m_ } A
m1W<` u_"h/)C'H //日志 -YyH"f public static void log(String sMsg) r97[!y1gt { 3ky+qoe System.err.println(sMsg); l1qwT0*6> } B3t>M)
9 1Qu,]i` 15:@pq\ public static void log(int sMsg) TjK5UML { 90ag! System.err.println(sMsg); jq)|7_N
} P0(~~z&%[ } PZR%8 m}]u @R&D["! |Z^g\l.j{ /* ` W>B8 **TestMethod.java E|;5Z* */ &RrQ()<as package NetFox; +|<b0Xd aF"Z!HD Hc%\9{zH public class TestMethod { =M#?* e -b}S3<15@ X4G55]D$> public TestMethod() %Nl(Y@dD* { ///xx/weblogic60b2_win.exe 7YjucPH# try{ vaOL6=[#:g SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); d)ZSzq //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); `UK+[`E SiteFileFetch fileFetch = new SiteFileFetch(bean); Ux
T[ fileFetch.start(); MEnHC'nI } :+Ax3 catch(Exception e){e.printStackTrace ();} gtGKV aQ:f"0fL )o</gt ) } z
2VCK@0 32LB*zc s)8M? |[`I public static void main(String[] args) %,cFX[D/) { A<5`[<x$ new TestMethod(); yaLW(@ } xBfe8lor } LC\:xia{X 点击下载更多相关资料
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