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/* jcJ@A0] **SiteFileFetch.java $s1/Rmw */ CzreX3i package NetFox; 1l)j(,Zd* import java.io.*; p8j4Tc5tQ> import java.net.*; PhuHfw4$y, *[
0,QEy -J6` public class SiteFileFetch extends Thread { Yg5o!A Lbrn8,G\ tR9iFv_ SiteInfoBean siteInfoBean = null; //文件信息Bean PtQ[({d3R long[] nStartPos; //开始位置 Jo[&y, long[] nEndPos; //结束位置 o@PvA1 FileSplitterFetch[] fileSplitterFetch; //子线程对象 vCt][WX( long nFileLength; //文件长度 'tkQz boolean bFirst = true; //是否第一次取文件
hFycSu boolean bStop = false; //停止标志 ;,]4A{| File tmpFile; //文件下载的临时信息 ,ko#z}Z4r, DataOutputStream output; //输出到文件的输出流 X7K{P_5l y[Dgyt //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Ux^ue9 public SiteFileFetch(SiteInfoBean bean) throws IOException uIO?4\s&G { P}Mu|AEG siteInfoBean = bean; 6||%T$_;} //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); WRbdv{1E tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); f:P;_/cJc if(tmpFile.exists ()) E*T6kp^b { R(_WTs9x4 bFirst = false; 6*$A/D read_nPos(); 9k62_]w@6 } ^Ar1V!PFk else >2K'!@~' {
mPPB"uQ nStartPos = new long[bean.getNSplitter()]; p;o "i_! nEndPos = new long[bean.getNSplitter()]; 9+ve0P7$ } U. <c#S kda*rl~c Zd-QZ<c";t c"CR_ } leSBR,C 7,?ai6{ ,=@WE>ip public void run() peS4<MqWu { %(%EEt //获得文件长度 aRn""3[ //分割文件 oWDn_GnG`h //实例FileSplitterFetch ~k@{b& //启动FileSplitterFetch线程 GM^H
)8U //等待子线程返回 4Rp[>}L try{ ,Bx0 if(bFirst) eln$,zK/b { :*l\j"fX5 nFileLength = getFileSize(); O]="ggq& if(nFileLength == -1) .
Z9c.E{ { P()&?C System.err.println("File Length is not known!"); &'i.W}Ib! } nC$c.K' else if(nFileLength == -2) \G/ZA) t { vgNrHq&2q System.err.println("File is not access!"); z+0#H39 & } +-V4:@ else |a\,([aU { F2n4#b for(int i=0;i<nStartPos.length;i++) #{)mr [c| { nhm#_3!6A nStartPos = (long)(i*(nFileLength/nStartPos.length)); WwKpZ67$R } ,&O&h2= for(int i=0;i<nEndPos.length-1;i++) HyQ(9cn| { La7}zXx nEndPos = nStartPos[i+1]; >N~jlr | } ja{x}n*5 nEndPos[nEndPos.length-1] = nFileLength; m60hTJ?N) } :Xx7':5 } 0!axAvBV YAi@EvzCVy 54s90 //启动子线程 _$}@hD*R~ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; gV5mERKs for(int i=0;i<nStartPos.length;i++) ^@'zQa { dleLX%P fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), zJ8 jJFL+Y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), p Bu}c< nStartPos,nEndPos,i); ypA 9WF Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); kZ^wc . fileSplitterFetch.start(); --`W1!jI@ } ej(w{vl // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), P^BSl7cT siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); sY}0PB // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", #g
Rns nEndPos = " + nFileLength); VhgcvS@V // fileSplitterFetch[nPos.length-1].start(); +sd':vE Tkh?F5l EiA_9%< //等待子线程结束 lqoVfj'6M //int count = 0; /w*HxtwFmD //是否结束while循环 iA"H*0 boolean breakWhile = false; Ao *{#z 'EU|w,GL} sR$/z9w while(!bStop) s*kSl:T@O { Aacj? write_nPos(); ~?lmkfy Utility.sleep(500); z&|sks7 breakWhile = true; yMb.~A^$J \#'m([<e niCq`! for(int i=0;i<nStartPos.length;i++) %bTXu1 { # 9ZO1\ if(!fileSplitterFetch.bDownOver) t(- 5l { rf2-owWN breakWhile = false; :\#/T,K" break;
1FRpcE } g\?7M1~ } ur/:aI if(breakWhile) $K~ t'wr break; @0%^\Qf2 O#b%&s"o y]%Io]!d //count++; |+Ub3<b[] //if(count>4) ::k/hP9.^ // siteStop(); fh}j)*K8 } (w,
Gv-S -Wl79lE &28%~&L System.err.println("文件下载结束!"); G~\=:d=^,` } j1P#({z[ catch(Exception e){e.printStackTrace ();} 2NqO,B|R } dmE.yVI"O gA DF Lc13PTz>>g //获得文件长度 Nc[u?- public long getFileSize() }JBLzk5| { 5]@"f/ int nFileLength = -1; 1bJrEXHXy try{ A{QA0X!p URL url = new URL(siteInfoBean.getSSiteURL()); AU^5N3%j HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Fop'm))C8 httpConnection.setRequestProperty("User-Agent","NetFox"); Z"'tJ3Y.~ <>6 DPHg~ y[sO0u\ int responseCode=httpConnection.getResponseCode(); 7
a_99?J if(responseCode>=400) =G%L:m* { $2gZpO| processErrorCode(responseCode); 4BAG GD2 return -2; //-2 represent access is error \#)w$O } H~r":A'"* d,caO E8N $y+Bril5W String sHeader; )Fh5*UC ]Br6!U4~ ;*XH[>I for(int i=1;;i++) $[DSe~ { 8P3"$2q //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *b+~@o //Utility.log(in.readLine()); I9;,qd%<T sHeader=httpConnection.getHeaderFieldKey(i); /p_#8}Uh if(sHeader!=null) /L? ia { El#"vIg(\ if(sHeader.equals("Content-Length")) B`<K]ut { &+zS4)UK nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); r:Rk!z* break; |KLCO'x } EgT?Hvx: } e.jbFSnA else TQg~I/ break; |QB[f*y5 } A
2Rp } _/`H<@B_U catch(IOException e){e.printStackTrace ();} 6@;
P catch(Exception e){e.printStackTrace ();} ==)q{e5 %d"d<pvx >qC,IQ' Utility.log(nFileLength); #9ZHt5T=$ ?,0 a#lG \olYv!f return nFileLength; qaZQ1<e } pDV8B/{ {f:%+h @pkQ2OM
2 //保存下载信息(文件指针位置) /U5!]7&gB private void write_nPos() T_/ n#e { Uon^z?0A try{ s2*~n_B output = new DataOutputStream(new FileOutputStream(tmpFile)); GW;O35
m output.writeInt(nStartPos.length); e> -fI_+b for(int i=0;i<nStartPos.length;i++) d !=AS { G3_HX<|f* // output.writeLong(nPos); )]M,OMYq- output.writeLong(fileSplitterFetch.nStartPos); <<l1zEf@ output.writeLong(fileSplitterFetch.nEndPos); OH/!Ky\@ } ^2)<H7p output.close(); V18A|]k } RBOg;EJ catch(IOException e){e.printStackTrace ();} :^H2D=z@ catch(Exception e){e.printStackTrace ();} &\$~ } ~6Pv5DKq {U"=}j( +LwwI*;b //读取保存的下载信息(文件指针位置) ^bk:g}o private void read_nPos() ( we)0AxF' { oF L7dL try{
BDfJ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); r%\%tz'`j
int nCount = input.readInt(); uF<}zFS nStartPos = new long[nCount]; t0.71( nEndPos = new long[nCount]; ^2C
\--=; for(int i=0;i<nStartPos.length;i++) -]<<}@NF { R@~=z5X(Q nStartPos = input.readLong(); s((c@)M nEndPos = input.readLong(); i62GZeE } #Oi{7~ input.close(); "6q@}sz! } |'qvq/#^ catch(IOException e){e.printStackTrace ();} sT'j36Nc<, catch(Exception e){e.printStackTrace ();} bJoP@s } crQ_@@X?< ftxy]NLF d.$0X/0 private void processErrorCode(int nErrorCode) j:E3c\a { |.;*,bb|3 System.err.println("Error Code : " + nErrorCode); H5Bh?mw2 } s"5wnp6pW BU.O[?@64 W:>XXUU //停止文件下载 XaF;IS@A public void siteStop() u0F{.fe { m:6*4_! bStop = true; K57u87=*X? for(int i=0;i<nStartPos.length;i++) _%G;^ b fileSplitterFetch.splitterStop(); 4s6,`- [ji')PCAi; 'x6rU"e $J } k)R~o
b } ny:/a //负责部分文件的抓取 \aN7[>R.Q **FileSplitterFetch.java f7/M _sx */ rvuasr~ package NetFox; Pk>S;KT. KAgxIz!^-1 t;V^OGflv import java.io.*; qOv`&%txW import java.net.*; 57KrDxE} KM?w{ ~9 ~r_2V$sC2 public class FileSplitterFetch extends Thread { E24j(> a4n5i.; OIDP#K String sURL; //File URL "U/yq long nStartPos; //File Snippet Start Position aNBwb9X long nEndPos; //File Snippet End Position ~OWpk)Vq int nThreadID; //Thread's ID 45k.U $<| boolean bDownOver = false; //Downing is over >qBJK)LHOv boolean bStop = false; //Stop identical ]=PkgOJD FileAccessI fileAccessI = null; //File Access interface Hb/8X
!= -A@/cS%p 1@i/N public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 4'TssRot@h { WL?qulC}h1 this.sURL = sURL; #r/5!*3 this.nStartPos = nStart; OZA^L;#> this.nEndPos = nEnd; $z`l{F4eMf nThreadID = id;
vR&b2G7o fileAccessI = new FileAccessI(sName,nStartPos);//定位 Lrmhr3
w5 } X]o"4#CQIX [N#4H3GM8 +,cd$,18 public void run() ?L0 |$#Iw { z,bK.KFSs while(nStartPos < nEndPos && !bStop) Z1Qv>@u { m>RtKCtP WZTAXOw E]}_hZU try{ !^o{}*]Pi URL url = new URL(sURL); |3^U\r^zo HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); zXU
g( xu httpConnection.setRequestProperty("User-Agent","NetFox"); @AM11v\: String sProperty = "bytes="+nStartPos+"-"; `<kB/T httpConnection.setRequestProperty("RANGE",sProperty); {pA&Q{ ^ Utility.log(sProperty); 1xu~@v60 3 qJ00A 7&9w_iCkV InputStream input = httpConnection.getInputStream(); {3.n!7+ //logResponseHead(httpConnection); o)>iHzR</ UNK.39 V%z?wDC byte[] b = new byte[1024]; |f/Uzd ~ int nRead; T
"hjL while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) A7,%'.k { JU.!< nStartPos += fileAccessI.write(b,0,nRead); .YWkFTlZ+ //if(nThreadID == 1) pwk Te // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); g"k4Z } c*]f#yr? 99(@O,*(Y 5423Ky< Utility.log("Thread " + nThreadID + " is over!"); Xs# _AX bDownOver = true; <h;_: //nPos = fileAccessI.write (b,0,nRead); jm@,Ihz=wI } QnP?j& catch(Exception e){e.printStackTrace ();} 4w#2m>. } \#WWJh"W } 9D Nd} rXO Kn<+Au_]L ck%YEMs //打印回应的头信息 J3~%9MCJ public void logResponseHead(HttpURLConnection con) K~2sX>l { dJ/gc"7aO for(int i=1;;i++) 9bM kP2w> { 97$Q?a8S@ String header=con.getHeaderFieldKey(i); -*Rf [|Z if(header!=null) M nZljB //responseHeaders.put(header,httpConnection.getHeaderField(header)); F\^8k /0 Utility.log(header+" : "+con.getHeaderField(header)); 2~l7WW+lx, else dP+wcl4 break; 9P)!v.,T/ } de)4)EzUP } dP(.l}O 9<&M~(dwT4 ('Qq"cn# public void splitterStop() ]jC{o,?s { Dr:M~r'6 bStop = true; Yj*T'<e } c"-X:m" :Yn.Wv- F8dr-"G } [@5cYeW3. 24k]X`/n mXyN{`q= /* 4x(m.u@ **FileAccess.java 1^*ogMe *//文件访问(定位,写) ZOcpF1y package NetFox; |>.MH import java.io.*; Hg<aU*o; 7M7Lj0Y)L ZS4dW_*[ public class FileAccessI implements Serializable{ Q~qM;l\i A[^#8evaK //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 yP"}(!~m RandomAccessFile oSavedFile; G+Z ,ic long nPos; Dy,MQIM|! =X^a aJf3rHX public FileAccessI() throws IOException `h'l"3l { LKp;sV this("",0); u"V,/1++\ } ^67}&O^1 , *#b
e F~fBr public FileAccessI(String sName,long nPos) throws IOException dm[cl~[
Q { )Sb-e(sl oSavedFile = new RandomAccessFile(sName,"rw"); YVa,?&i=N this.nPos = nPos; "qF/7`e[ oSavedFile.seek(nPos); VgIk '. } 97\K ]Tr 89^g$ ac aVK,(j9u public synchronized int write(byte[] b,int nStart,int nLen) RV_I&HD! { e+-#/i* int n = -1; qpjZ-[UC try{ %q3`k#?< oSavedFile.write(b,nStart,nLen); gBhX=2% n = nLen; X>yDj]*4P } ZCj1Cz]"l< catch(IOException e) g[1>|Ax`' { f4\$<g/~ e.printStackTrace (); 8Cp@k= } yc?L
OW0 c`\/] p *42
@1, return n; 4V4S5V } 7r'_p$ `r-Jy{!y4 EC8Z. Uu } 8g!79q\c4 N8At N\e [(_,\:L${ /*
=cS5f#0 **SiteInfoBean.java I50LysM */ dR.?Kv(,E package NetFox; \RR`
F .7 L-E?1qhP> y[.lfW?) public class SiteInfoBean { Xwo+iZ(a 8CRbo24"s 1ow,'FztPt private String sSiteURL; //Site's URL = FV12(U private String sFilePath; //Saved File's Path zn^7#$fC private String sFileName; //Saved File's Name +C7E]0!r private int nSplitter; //Count of Splited Downloading File CKZEX*mPC [Z2[Iy $dKfUlO public SiteInfoBean() KJOb1MM {//nSplitter的缺省值为5 )8g&lyT //default value of nSplitter is 5 'D`lVUB this("","","",5); +u=VO#IA# } *&Iv Eu VT4>6u} F%$ q]J[ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) tlD^"eq4: { *q=\e 9 sSiteURL= sURL; s?m_zJh sFilePath = sPath; xg,
9~f[ sFileName = sName; uwI"V|g%a& this.nSplitter = nSpiltter; mD% qDKI :TP4f
?FA ,7s+-sRG } ./3/3&6 oXht$Q RAu(FJ public String getSSiteURL() HU/4K7e` { v)O].Hd return sSiteURL; >6&Rytcc] } R"HV|Dm|m :d35?[ ;:oJFI#; public void setSSiteURL(String value) Wf8@B#^{ { @|"K"j# sSiteURL = value; &g90q }
Ws2?sn#x PB"=\>]`N QA^FP8!j public String getSFilePath() gV9bt~ { zmD7]?| return sFilePath; %wru) } A9]&w KwaxNb5 o-&0_Zq_ public void setSFilePath(String value) i9qIaG/ { (U$;0` sFilePath = value; N<4 nb } 9^H.[t ADOA&r[ *PFQ public String getSFileName() AFBWiuwI3 { lcEK&AtK return sFileName; GNuIcy } |Bi7:w -CFy
^^!G{*F public void setSFileName(String value) pQc-}o" { ci2Z_JA+ sFileName = value; Ylu\]pr9|C } nIL67& T+RC#&> yDZm)|<. public int getNSplitter() 8_Uhh5[ { (xTGt",_Jo return nSplitter; $'eY-U8q } ]n"RPktx +hispU3ia O
x`K7$) public void setNSplitter(int nCount) `x >6Wk1 { n`w]? bL nSplitter = nCount; Svo\+S } uF}B:53A } a%kvC#B <z#Fj`2{ 1\aTA, /* ;34p
[RT **Utility.java zv/dj04> */ zAklS 7L package NetFox; UA~ 4O Q] v)gMNzt id8QagJ public class Utility { n=$ne2/ ),Yk53G6c uHmvHA~/c8 public Utility() O(=9&PRi { 2T(+VeMQ= @+p(% /)K;XtcN } ]63!
Wc $YY{|8@kjv //线程睡眠 ~QPTs1Vk8 public static void sleep(int nSecond) sSGXd=": { #$2/< try{ }#4Ek8nFR Thread.sleep(nSecond); J#i7'9g } ]e"!ZR?XJ catch(Exception e) , .;0xyc { W+"^! p| e.printStackTrace (); Lr8|S } -oUNK}> } Y[R>?w Z^4+ 88 //日志 VEIct{ public static void log(String sMsg) w3>11bE { &^HVuYa.0 System.err.println(sMsg); %
C2Vga# } sb8bCEm-\ oCI\yp@a U{pg
y#/ public static void log(int sMsg) ceCO *m~ { fvi0gE@bd System.err.println(sMsg); vZ srlHb } CqZHs
9+e& } [v*q%Mi_ G?XA",AC 3Os0<1@H /* SvvNk **TestMethod.java 'OP0#`6` */ ]Z6? m package NetFox; oxL<\4)WJ +YW;63"o l,l6j";ohd public class TestMethod { =4SXntU!e VR&dy|5BO .f-=gZ* * public TestMethod() Ny/eYF# { ///xx/weblogic60b2_win.exe wi
jO2F try{ M")/6 PH8 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); w"dKOdY //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ku]?"{Xx SiteFileFetch fileFetch = new SiteFileFetch(bean); :0 n+RL*5 fileFetch.start(); 0^uUt- } {R@V catch(Exception e){e.printStackTrace ();} h{ix$Xn~ \$Wpt#V \({'Xo >( } (Y7zaAG] AL3iNkEa Mkk.8AjC| public static void main(String[] args) kVKAG\F { a <?~1pWtc new TestMethod(); Bh cp=# } 76<mP*5 } ,z/aT6M?H 点击下载更多相关资料
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