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/* PdD,~N# **SiteFileFetch.java ))xP]Mu v */ Oz1S*<]=,~ package NetFox; b haYbiX? import java.io.*; U6xs'0 import java.net.*; ;&} rO.0 ^Q9!DF m Sg+0w7:2 public class SiteFileFetch extends Thread { b[Qe} `W ^rh{ 0-at#r: SiteInfoBean siteInfoBean = null; //文件信息Bean 2tqj]i long[] nStartPos; //开始位置 CzfGb4 long[] nEndPos; //结束位置 |r<#>~* FileSplitterFetch[] fileSplitterFetch; //子线程对象 + t7n6 long nFileLength; //文件长度 ?,z/+/: boolean bFirst = true; //是否第一次取文件 ad#4W0@S boolean bStop = false; //停止标志 Oe)B.{;Ph File tmpFile; //文件下载的临时信息 \r`><d DataOutputStream output; //输出到文件的输出流 }!9KxwC( .P#+V$qhv //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) lS96sjJp@ public SiteFileFetch(SiteInfoBean bean) throws IOException w#!b #TNc { =im7RgIBo siteInfoBean = bean; J ?^R1 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); xcM*D3 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); OzA'd\| if(tmpFile.exists ()) (iJ9ekB { 3aUWQP2 bFirst = false; J.Fy0W@+k4 read_nPos(); [4
y7tjar^ } $2/v8 else ,LodP%%UV { U9(p ^ nStartPos = new long[bean.getNSplitter()]; ! _p(H nEndPos = new long[bean.getNSplitter()]; vw)lD9-" } k];NTALOG )cV*cDL1j sLze/D_M* kCHYLv3. } ?F"mZu QzilivJf yFY:D2 public void run() l|j}Ggen { yp?a7t M //获得文件长度 %DhM }f //分割文件 uA;vW\fHr //实例FileSplitterFetch C8W4~~1S //启动FileSplitterFetch线程 9D[Jn}E: //等待子线程返回 /8Ru O try{ 0BrAgv"3a_ if(bFirst) $_f"NE} { .I %`yhCW nFileLength = getFileSize(); E+z"m|G if(nFileLength == -1) <44A*ux { kHb H{]) System.err.println("File Length is not known!"); *bSxobn } Xy]Pmt else if(nFileLength == -2) yvIzgwN%s! { P$#{a2 System.err.println("File is not access!"); SX]uIkw } 5j~1%~,# else H&SoVi_V { ~UNK[ for(int i=0;i<nStartPos.length;i++) A-f,&TO { h,zM*z A_ nStartPos = (long)(i*(nFileLength/nStartPos.length)); ac!!1lwA } \ef:H&r for(int i=0;i<nEndPos.length-1;i++) BO WOH { 5M/~|"xk nEndPos = nStartPos[i+1]; d^f rKPB } [X91nUz# nEndPos[nEndPos.length-1] = nFileLength; }|%1LL^pB } Mi;Pv* } 3YJ"[$w='( u HW'F(; =t`cHs29 //启动子线程 yO}5.
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; #IJeq0TVB for(int i=0;i<nStartPos.length;i++) w {"1V7| { Cv}^]_`Q fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), uaz!ze+ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), p!5'#\^f nStartPos,nEndPos,i); gJCZ9{Nl Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }8POm# fileSplitterFetch.start(); NJ]3qH } a9UXg<4 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), kIX1u<M~ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); s<rV1D // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Svb>s|D nEndPos = " + nFileLength); tJ
2GSZ` // fileSplitterFetch[nPos.length-1].start(); .`Q^8|$-K tbWfm5$ {VKFw=$8 //等待子线程结束 ]Axz}: //int count = 0;
EY:IwDA.} //是否结束while循环 *AYq:n6 boolean breakWhile = false; ""Da2Md ;1s+1G}_z #n}~u@,o_ while(!bStop) 6i2%EC9 { L7d1)mV write_nPos(); 0{g*\W*+~ Utility.sleep(500); X6",Xr!{ breakWhile = true; DU0/if9. ;AE-=/< }f]Y^>-Ux for(int i=0;i<nStartPos.length;i++) wD=]U@t`, { z9*e%$+S if(!fileSplitterFetch.bDownOver) __2<v?\ { 2ozh!8aL breakWhile = false; t*=[RS* break; r!+{In+Z } W*t]
d } wWy;dma# if(breakWhile) TI8r/P?
]V break; 'gvR?[!t mL=d EQ |Ha#2pt{bc //count++; B*,)@h //if(count>4) d<6F'F^w.7 // siteStop(); PDuc;RG } \xj;{xc $2Whb!7Z( 8o$rF7.- System.err.println("文件下载结束!"); p 1'l D } BVw2skOT catch(Exception e){e.printStackTrace ();} y
%Q. ( } d_,5;M^k P[2!D)A -GAF> //获得文件长度 x,!Dd public long getFileSize() sD:o
2(G* { 9%"7~YCDas int nFileLength = -1; ?T/]w-q> try{ }OpUG URL url = new URL(siteInfoBean.getSSiteURL()); @up,5` HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); D%p*G5Bg3 httpConnection.setRequestProperty("User-Agent","NetFox"); r3l1I} L"qJZU ; :P4~R int responseCode=httpConnection.getResponseCode(); HIXAA?_eh= if(responseCode>=400) ^#HaH { i6WH^IQ M processErrorCode(responseCode); cb|+6m~ return -2; //-2 represent access is error @>)VQf8s1 } j_~KD} h2ROQKL"B N1a]y/
String sHeader; wJy]Vyd <]qNjsdb9" wa"0`a:`; for(int i=1;;i++) S6<o?X9,I { [';o -c"! //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 'J,UKK\5 //Utility.log(in.readLine()); (?jK|_ sHeader=httpConnection.getHeaderFieldKey(i); 1dQAo1 if(sHeader!=null) aZN?V}^+ { FDMQLx f if(sHeader.equals("Content-Length")) Z hfp>D { Uwc%'=@ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Lce,]z\_ break; g\q . } xMJ-= } FA+HR else 6}^x#9\ break; y2A\7&7 } @t%da^-HS" } 74Jx \(d catch(IOException e){e.printStackTrace ();} \ND]x]5d catch(Exception e){e.printStackTrace ();} \p4*Q}t .]v>LsbhF dn(!wC] Utility.log(nFileLength); kR<sSLEb f2WVg;Z aTvyzr1 return nFileLength; C'JI%HnQ } TO6F U,WOP7z N[_T3( //保存下载信息(文件指针位置) 7{#p'.nc5 private void write_nPos() $--8%gh dG { q8{Bx03m6 try{ TGJz[Ny output = new DataOutputStream(new FileOutputStream(tmpFile)); ,}t%7I output.writeInt(nStartPos.length); ug9Ja)1| for(int i=0;i<nStartPos.length;i++) ;jzJ6~< { K*@?BE // output.writeLong(nPos); k79OMf<v output.writeLong(fileSplitterFetch.nStartPos);
3f`Uoh+ output.writeLong(fileSplitterFetch.nEndPos); 56pj(}eq } !VD$uT output.close();
b] 5dBZ( } {"p ~M7 catch(IOException e){e.printStackTrace ();} w7MRuAJ4 catch(Exception e){e.printStackTrace ();} x1@,k=qrd } >WZ.Dj0n OX;bA^+}P O60T.MM` //读取保存的下载信息(文件指针位置) =[n !3M+X private void read_nPos() JI@iT6.%IX { h4n~V:nNm try{ AROHe DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); C. .| O int nCount = input.readInt(); Z\0wQ;} nStartPos = new long[nCount]; |j+JLB nEndPos = new long[nCount]; T!x/^ for(int i=0;i<nStartPos.length;i++) E2zL-ft. { 4rhHvp nStartPos = input.readLong(); @WazSL;N nEndPos = input.readLong(); ug%7}& } t]B`>SL3W input.close(); EZj rX>"# } 6nA9r5Ghv catch(IOException e){e.printStackTrace ();} o "r catch(Exception e){e.printStackTrace ();} 3cJ'tRsp< } #?Ix6 {R y>C
!cYB Y~Uf2(7b5 private void processErrorCode(int nErrorCode) /
B!j`UK { $?ss5:
S System.err.println("Error Code : " + nErrorCode); ?8753{wk } %g?M?D8Ud3 }oD^tU IK N1Y
uLG: //停止文件下载 MgiW9@_( public void siteStop() H ezbCwsx& { U%Fa.bL~ bStop = true; P,8TO-e7 for(int i=0;i<nStartPos.length;i++) &DW !$b fileSplitterFetch.splitterStop(); i6bUJtL e\}@w1 l9QI lTc7 } %|4Kak]:Q } 3X Y"s" //负责部分文件的抓取 UK6x]tE **FileSplitterFetch.java _E9[4%f */ @Ov}X]ELi package NetFox; 7b~uU@L` s58dHnj5+ hrX/,D -c import java.io.*; j~bNH~3 import java.net.*; \6AM?}v rX^uHq8 N(i.E5&9 public class FileSplitterFetch extends Thread { W
/v
&V# 0<V/[$}\D $JOtUB{ String sURL; //File URL y:E$n! long nStartPos; //File Snippet Start Position =Fe4-B?I long nEndPos; //File Snippet End Position {yNeZXA> int nThreadID; //Thread's ID z}SJ~WY'[ boolean bDownOver = false; //Downing is over k/F#-},Q. boolean bStop = false; //Stop identical wKJ|;o4;L FileAccessI fileAccessI = null; //File Access interface _ow7E\70 \E c*Gq?. [$} \Gv public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _gH$
,.j/ { Ho#nM_ q this.sURL = sURL; bRggt6$z this.nStartPos = nStart; `\##M= this.nEndPos = nEnd; `)$G}7cRUH nThreadID = id; P*[wB_^&UP fileAccessI = new FileAccessI(sName,nStartPos);//定位 E;H9]*x/ } H{*rV>% jcC"vr'u| ) M8,Tv*~ public void run() zv"NbN { id,' + < while(nStartPos < nEndPos && !bStop) C`ZU.|R { OGW3Pe0Z' o]I8Ghk>/z vMY!Z1.* try{
D\;5{,:d URL url = new URL(sURL); g'!"klS93 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); N*[b26 httpConnection.setRequestProperty("User-Agent","NetFox"); N=U`BhL_ String sProperty = "bytes="+nStartPos+"-"; fJNK@F httpConnection.setRequestProperty("RANGE",sProperty); ~[F7M{LS Utility.log(sProperty); "C3J[) qC {ZdF6~+H(! W NeBthq6 InputStream input = httpConnection.getInputStream(); \(`2 @ //logResponseHead(httpConnection); Y9-F\t=~ e1b?TF@lz yFd .tQs byte[] b = new byte[1024]; }T PyHq" int nRead; {\k }:) while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) `'3&tAy { w)&4i$Lk6 nStartPos += fileAccessI.write(b,0,nRead); eU)QoVt //if(nThreadID == 1) Aua}.Fl, // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); UvU@3[fw } $KT)Kz8tF T++q.oFc
@#^Y#
rxb Utility.log("Thread " + nThreadID + " is over!"); iDcYyNE bDownOver = true; "J*>g(H53 //nPos = fileAccessI.write (b,0,nRead); q77qdmq7 } |aU8WRq catch(Exception e){e.printStackTrace ();} 9,&xG\z= } gB%"JDn8 } _PGd\>Ve p,f$9t4 }%c>Hh //打印回应的头信息 |Y6;8e`H public void logResponseHead(HttpURLConnection con) MtF^}/0w!` { Xk'Pc0@a for(int i=1;;i++) '
-9=> { O> _ F
String header=con.getHeaderFieldKey(i); qnQ". if(header!=null) y8C8~ -&OK //responseHeaders.put(header,httpConnection.getHeaderField(header)); i`<L#6RBT Utility.log(header+" : "+con.getHeaderField(header)); *:+ZEFMq else _u;pD- break; G$KQgUN~[ } hi(e%da } [+l6x1Am j( k%w Jqgm>\y public void splitterStop() E
?bqEW( { l{]KA4 bStop = true; Yv)c\hm(7j } }/\`'LQ \ntUxPox. [n&ES\o#( } 2wPc
yD T.')XKP)1N !Ea9
fe /* 9
!UNO **FileAccess.java `'5vkO> *//文件访问(定位,写) Z5F#r>> ` package NetFox; a[z$ae7 import java.io.*; LXJ;8uW2y \Wg_ gA 4Z=`; public class FileAccessI implements Serializable{ ]
>w@@A &tf(vU;,' //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Z'uiU e`& RandomAccessFile oSavedFile; A)j!Wgs^z long nPos; ~H
}kItVx n'q:L(`M public FileAccessI() throws IOException 5`:d$rv { 0y/31hp this("",0); IC8%E3 } ,~1sZ`C 01&E.A 5}w public FileAccessI(String sName,long nPos) throws IOException -I6t ^$HA { Og@{6> oSavedFile = new RandomAccessFile(sName,"rw"); $`%Om WW{ this.nPos = nPos; NOkgG0Z oSavedFile.seek(nPos); XjP;O,x } SsZSR.tD XR[=W(m} M=&,+#z<V public synchronized int write(byte[] b,int nStart,int nLen) /J!:_Nq { @x743}Y\ int n = -1; nN-S5?X# try{ S-3hLw&? oSavedFile.write(b,nStart,nLen); RjgJIVm( n = nLen; :?y Ma$ } d:^B2~j catch(IOException e) H[OgnnM { IoK/ 2Gp e.printStackTrace (); u^JsKG+,: } i'>5vU0?3 )cP)HbOd= 4 83rU return n; 'DpJ#w\81 } q{B?j%.o 3Z me?o*bY f{[0;qDJ } liLhvcd %m[ZU<v Z_S{$D /* Gky^S# **SiteInfoBean.java 0WSZhzNyY */ 7OG:G z+)x package NetFox; 5U+4vV/* O1t$]k: kcg\f@d$ public class SiteInfoBean { `=,emP&(H& M;OMsRCVO {i8zM6eC private String sSiteURL; //Site's URL LGW_7&0<< private String sFilePath; //Saved File's Path <m1v+cnqo private String sFileName; //Saved File's Name -MTYtw( private int nSplitter; //Count of Splited Downloading File Kr|.I2?" ^[Ka+E^Q O&|<2Qr public SiteInfoBean() -<5{wQE;| {//nSplitter的缺省值为5 GQCdB> //default value of nSplitter is 5 Z(Y: this("","","",5); |Nj6RB7 } C&*1H`n [>\|QS| ]PoWL;E' public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) a@qc? { >{:hadUH sSiteURL= sURL; dY~z6bT sFilePath = sPath; p)?6#~9$ sFileName = sName; EEL3~H{( this.nSplitter = nSpiltter; S7PWP<9 sO6=w%l^ iQ2j ejd3( } S
>CKm:7 PcU~1m1 4:N*C7P public String getSSiteURL() v}V[sIs} { 1TGRIe) return sSiteURL; {)!>e } p:Lmf8EI 5~ :/%+F0= fPPP| public void setSSiteURL(String value) bDtb6hL { M~|7gK.m1 sSiteURL = value; hdrsa}{g } vI5lp5( -3 ,bdjk( ?&~q^t?u public String getSFilePath() lNa+NtQu { mJ k\$/Kh return sFilePath; zp1ym}9M } ` K{k0_{ T:Klr=&V R( FQ+h public void setSFilePath(String value) Q
zaD\^OF { !+^'Ej)z sFilePath = value; Wx{E\ l } KBN% TqH| X(nyTR8 cpltTJFg public String getSFileName() '!Hs"{~{ { 4r1\&sI$~ return sFileName; &R_7]f+%) } `<X-3)>;G iT4*~(p 3 - Fbp!*.
u public void setSFileName(String value) e;6KxvX~ { ,=m.WmXE sFileName = value; hb5K"9Y } !`Rh2g*o9 cu0IFNF}[ k5.5$<< T public int getNSplitter() U@mznf* J { P#~B@d return nSplitter; l:!L+t*}6 } XZM3zlg* <'I["Um &&X,1/ public void setNSplitter(int nCount) }#O!GG{ { XWp8[Cxs nSplitter = nCount; -[V-f> : } EMW6' }
KeQcL4< YZBh}l6t G:=hg6' /* 3`HK^((o **Utility.java @0?!bua_| */ >0IZ%Wiz package NetFox; C|$qVh> pSw/QO9 7C{ yNX# public class Utility { *Y m?gCig Dsg>~J' 3yZmW$E. public Utility() d,"LZ>hNY* { F1t( P 8 `a& kD|Yh FM@iIlY" } K T} &r5q,l&@n //线程睡眠 @^W`Yg)C public static void sleep(int nSecond) 18>cfDh;N { %t9C try{ DmiBM6t3N Thread.sleep(nSecond); jhNFaBrS } 0CrsZt X catch(Exception e) p~qe/ { Z'JS@dV e.printStackTrace (); hArY$T&MB } TC\+>LXiZ } 9t"Rw ns |W">&Rb<t# //日志 @c3xUK public static void log(String sMsg) SiratkP9n7 { SAx9cjj+ System.err.println(sMsg); ]k0
jmE } NK_|h% {m.$EoS <>cS@V5j public static void log(int sMsg) Ux[<g%F" { gb ga"WO System.err.println(sMsg); 200yN+ ec } ~U9K<_U } 'ZfgCu)St Ey46JO" c3A\~tHW /* |\5^ub,m **TestMethod.java "F<CGSo */
BX,)G HE package NetFox; #%0V`BS7n #WpkL]g2+% {meX2Z4 public class TestMethod { nM
)C^$3<t O !L`0
=%c VM"cpC_8 public TestMethod() *Z5^WHwg { ///xx/weblogic60b2_win.exe [VCC+_ try{ tZrc4$D- SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); kNEEu!G //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Lsmcj{1d SiteFileFetch fileFetch = new SiteFileFetch(bean); ^PksXfk fileFetch.start(); J3K=z } 7|P
kc(O catch(Exception e){e.printStackTrace ();} U@lc1# NR{wq|" l\HdB"nT } aER|5!7(2\ 9(CvGzco< |y\Km public static void main(String[] args) (!os&/", { /HC:H,"i new TestMethod(); [m
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