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/* cba **SiteFileFetch.java ]u;Ma
G=; */ Zd2B4~V package NetFox; vDGAC' import java.io.*; <W,M?r+
import java.net.*; 3~Qvp )~ ?Cg",k ' s~A#B)wB public class SiteFileFetch extends Thread { `WjRb = F!_ivV x,f=J4yco SiteInfoBean siteInfoBean = null; //文件信息Bean =dVPx<l5 long[] nStartPos; //开始位置 <!+T#)Qi long[] nEndPos; //结束位置 03] FileSplitterFetch[] fileSplitterFetch; //子线程对象 L4fM?{Ic:s long nFileLength; //文件长度 8T:?C~" boolean bFirst = true; //是否第一次取文件 x.=Np\#\G- boolean bStop = false; //停止标志 `s0`kp File tmpFile; //文件下载的临时信息 RW4}n<
88 DataOutputStream output; //输出到文件的输出流 \Lp|S:u W%3<"'eP //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) JG]67v{F public SiteFileFetch(SiteInfoBean bean) throws IOException 9VEx0mkdd { 'p%\fb6` siteInfoBean = bean; P;A9t #\ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); sj"zgE) tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 0|1)cO}Dy if(tmpFile.exists ()) =5a|'O { v/W\k.?q/ bFirst = false; :h4Nfz( read_nPos(); &#keI., } j|Q*L<J
else aFCma2 { @X _<y nStartPos = new long[bean.getNSplitter()]; 8uj;RG nEndPos = new long[bean.getNSplitter()]; [,s{/32s } [?dsS$Y3 Hr?_`: /< OoZf+[ aP#nK }
/(iq^ XXx]~m fyRSg B00$ public void run() Yy,i,c`r { PRR]DEz //获得文件长度 'Y6x!i2 //分割文件 EWI2qaSnO //实例FileSplitterFetch my.%zF //启动FileSplitterFetch线程 ^Po^Co //等待子线程返回 \Zpg,KOT try{ ,*y\b|<j if(bFirst) .(RX;.lw { j %3wD2 l nFileLength = getFileSize(); s{"}!y=] if(nFileLength == -1) td}%reH { LSX;|#AI System.err.println("File Length is not known!"); }^ g6Y3\ } #:UP'v=w else if(nFileLength == -2) n9PCSl j { OoG Nij System.err.println("File is not access!"); BZ '63 } 6k1;62Ntk else kYwV0xQ { Hp#IOsP~ for(int i=0;i<nStartPos.length;i++) ^HO'"/tB@D { z0yPBt1W nStartPos = (long)(i*(nFileLength/nStartPos.length)); l\Q-- } W8@o7svrh for(int i=0;i<nEndPos.length-1;i++) M%U1?^j8 { +2qCH^80 nEndPos = nStartPos[i+1]; z 1~2w: } VL[} nEndPos[nEndPos.length-1] = nFileLength; Wu{cE;t } Rxl )[\A* } n7CwGN% lhp.zl ^V5VRGq //启动子线程 JemB[ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; \dB)G<_ for(int i=0;i<nStartPos.length;i++) ,V>7eQt? { sI&|qK-( fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <Qx]"ZP% siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Hzn6H4Rc nStartPos,nEndPos,i); R6xJw2;_ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !4?QR fileSplitterFetch.start(); h;+bHrKji } |qp^4vq.p // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), SU8vz/\%y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %o4d(C B // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", KKFV+bK) nEndPos = " + nFileLength); :iKk"r,2P[ // fileSplitterFetch[nPos.length-1].start(); xE0'eC5n^ l-~
o&n #9's^}i //等待子线程结束 eeix-Wt*E //int count = 0; nQHQVcDs8 //是否结束while循环 54^2=bp boolean breakWhile = false; U?WS\Jji3! %UO ;!&K Z(~v{c %< while(!bStop) dPVl\<L1 { HZ_,f"22 write_nPos(); n
_H]*~4F Utility.sleep(500); oMw#ROsvC breakWhile = true; 3-%F)@n lk(q>dv K Z%_m<Nf8T for(int i=0;i<nStartPos.length;i++) s|q]11r+H { V1d{E 0lM if(!fileSplitterFetch.bDownOver) %F.^cd" { RaX:&PE breakWhile = false; ,cF
$_7M break; JvI6+[ } 'Cq)/}0 } C7hJE- if(breakWhile) >EJ`Z7E6 break; "QV?C Gc1!')g! sX,."@[ //count++; @D3|Ak 1 //if(count>4) 0|L%)'F // siteStop(); Jh6 z5xUV } 1>"Yw|F-|3 aj\
zc I Wh7}G System.err.println("文件下载结束!"); Y}aaW[ } &4
~C%{H3 catch(Exception e){e.printStackTrace ();} `#Yv(a2TY } V=+wsc k%-S7iQ )e|n7|} $ //获得文件长度 w~lxWgaY7 public long getFileSize() aR@s.
ll { o;^k"bo6 int nFileLength = -1; wq6.:8Or-] try{ 9Z_!}eY2mc URL url = new URL(siteInfoBean.getSSiteURL()); wV&UB@ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Q"Ur*/-U httpConnection.setRequestProperty("User-Agent","NetFox"); {] Zet}2 %
a9C]? Mu>WS)1lS int responseCode=httpConnection.getResponseCode(); 2 yY.rs if(responseCode>=400) 0;6^fiSY; { N
Dg*8i processErrorCode(responseCode); QV_e6r1t#m return -2; //-2 represent access is error C3#mmiL- } qe@ctHpn h p<NVST K[G=J String sHeader; rO;Vr},3\% .~L^h/)Gjy 'UN
'gXny for(int i=1;;i++) c1CUG1i { TQjM3Ri=V //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); fdCN?p[_ //Utility.log(in.readLine()); Ac,Qj`'V sHeader=httpConnection.getHeaderFieldKey(i); uLK4tQ if(sHeader!=null) LNU#NJ^Axt { u&7c2|Q if(sHeader.equals("Content-Length")) JPt0k { zo{WmV7[| nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); #sg^l>/* break; ~ 6`Ha@ } ex}6(;7)O } 2dpTU=K4 else <lxE^M break; ~UhTy~jya } ^XbN&'^,HL } l^"HcP6 catch(IOException e){e.printStackTrace ();} F~O}@e{ catch(Exception e){e.printStackTrace ();} due'c!wW Q&d"uLsx aIsT"6A~{ Utility.log(nFileLength); D)my@W0, QaAWO YlP8fxS return nFileLength; <6(&w9WY } Co%EJb"tk 8G6[\P3fQ 2TxHY|4 //保存下载信息(文件指针位置) dEuts*@Q private void write_nPos() #y4+O;{ { Ki_8g try{ cf7UV6D g output = new DataOutputStream(new FileOutputStream(tmpFile)); hCX_^% output.writeInt(nStartPos.length); <`/22S" for(int i=0;i<nStartPos.length;i++) 'A}@XGE:p { Sph:OX8 // output.writeLong(nPos); Vr1yj output.writeLong(fileSplitterFetch.nStartPos); zG0191f output.writeLong(fileSplitterFetch.nEndPos); q8_8rp-@ } <JyF5 output.close(); d4]9oi{} } kTQvMa-X9D catch(IOException e){e.printStackTrace ();} OU /=w pt catch(Exception e){e.printStackTrace ();} k:JlC(^h } cIJqF.k 9R6]OL)p y~ZYI]`
J //读取保存的下载信息(文件指针位置) "N\tR[P! private void read_nPos() o(5eb;"yi> { %l.5c Sn@ try{ Vw~st1",[ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); wm<`0} int nCount = input.readInt(); $QB~ x{v@n nStartPos = new long[nCount]; %x2_njDd nEndPos = new long[nCount]; #3WKm*T/ for(int i=0;i<nStartPos.length;i++) F=qG+T { 0zCmU)ng nStartPos = input.readLong(); l2lyi
nEndPos = input.readLong(); TODTR7yGo } m+ww input.close(); ;
wpX } ]?$eBbt catch(IOException e){e.printStackTrace ();} PAUepO_ catch(Exception e){e.printStackTrace ();} {"x>ewAf } 4U1!SR]s `YinhO:Z OlwORtWzZ private void processErrorCode(int nErrorCode) |sIr}} { f#mcWL1} System.err.println("Error Code : " + nErrorCode); u#c3T'E } (>
{CwtH][ MkCq$MA erW[q //停止文件下载 s?g`ufF.t public void siteStop() {@7{!I|eD { s,*kWy"jp bStop = true; 6L)]nE0^ for(int i=0;i<nStartPos.length;i++) jwe^(U fileSplitterFetch.splitterStop(); tU :,s^E"# fZH";_"1 3r[}'ba\ } H}[kit*9 } 5jb/[i^V //负责部分文件的抓取 |~Op|gs **FileSplitterFetch.java 0';U3:=i, */ I5$@1+B package NetFox; r{Cbx#; H1bPNt63 @0mR_\u\ import java.io.*; c2aW4TX2 import java.net.*; !4blX'<w uoIvFcb^ '0juZ~>} public class FileSplitterFetch extends Thread { TO|&}sDh LG/6_t} e_6-+l!f String sURL; //File URL vp>,}nx4 long nStartPos; //File Snippet Start Position 1lJY=`8qa long nEndPos; //File Snippet End Position M2.Pf s int nThreadID; //Thread's ID D@]*{WO boolean bDownOver = false; //Downing is over {r$n
$ boolean bStop = false; //Stop identical fF"\$Ny FileAccessI fileAccessI = null; //File Access interface <A_L Zi $<~o,e-4 r@XH=[: public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _eE hIQ9 { {);S6F$[3 this.sURL = sURL; J!5>8I(_wX this.nStartPos = nStart; 8)1k>= this.nEndPos = nEnd; ^Iz(V2 nThreadID = id; V\ 7O)g fileAccessI = new FileAccessI(sName,nStartPos);//定位 C]xKdPQj% } ZMI!Sl 9AxeA2/X KqE5{ q public void run() )225ee> { bi^Xdu while(nStartPos < nEndPos && !bStop) k!^Au8Up? { .+'`A"$8 LWpM-eW1q /tu+L6 try{ has \W\( URL url = new URL(sURL); ^F*G HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %pR:.u| httpConnection.setRequestProperty("User-Agent","NetFox"); :+G1=TuXw~ String sProperty = "bytes="+nStartPos+"-"; }aPx28:/ httpConnection.setRequestProperty("RANGE",sProperty); FBR]) h'Z Utility.log(sProperty); 7LQLeQvB Fk(+S:{yQ &6yh4-(7 InputStream input = httpConnection.getInputStream(); \}:&Hl+ //logResponseHead(httpConnection); 7<ZP (I5X RkrZncBgV< z&3in byte[] b = new byte[1024]; Q}A*{9#|
int nRead; SXA`o<Ma while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) AaVj^iy/X { $Ka-ZPy<# nStartPos += fileAccessI.write(b,0,nRead); RP"YSnF3 //if(nThreadID == 1) U|Du9_0 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); tY1M7B^~ } IC1oW) 1236W+ [+q':T1W- Utility.log("Thread " + nThreadID + " is over!"); >AbgJ*X. bDownOver = true; @Yv.HhO9 //nPos = fileAccessI.write (b,0,nRead); 7({"dW } %LH~Im= catch(Exception e){e.printStackTrace ();} Spnshv8 } Nan@SuKY } %`kO\q_ E*uz|w3S)Y x }8 U\ //打印回应的头信息 sNet[y:O3 public void logResponseHead(HttpURLConnection con) w;LIP!T# { Jj_ t0" for(int i=1;;i++) O,&nCxB] { H\zV/1~Y String header=con.getHeaderFieldKey(i); .%.bIT if(header!=null) ?8g*"&cn //responseHeaders.put(header,httpConnection.getHeaderField(header)); l;N?*2zm[ Utility.log(header+" : "+con.getHeaderField(header)); '_f]qNy else JD Q7 break; ot"3 3I } E3):8>R;1 } N3_rqRd^ ]dx6E6A,
OwdA6it^f public void splitterStop() B.e3IM0 { ({GN.pC( bStop = true; 3X0"</G6 } cTU%=/gbc< }.nHT0l IQ${2Dpg[ } f.Uvf^T}2 mHm"QBa! q0Hor /* 8"f Z>XQ **FileAccess.java _y,?Cj=u| *//文件访问(定位,写) &!@7+']) package NetFox; J6WyFtlyLc import java.io.*; ^7qqO% /$q9
Kxb z1-JoZ public class FileAccessI implements Serializable{ W^es"\ 4x`.nql //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ~ sC< V RandomAccessFile oSavedFile; Sh]g]xR long nPos; U1.w%b, K;n5[o&c %Ob#GA+ public FileAccessI() throws IOException MPn
6sf9M { $69ef[b this("",0); |?kZfr&9q } lrE|>R _YT9zG 1]yjhw9g public FileAccessI(String sName,long nPos) throws IOException K4H U9! { P ]prrKZe, oSavedFile = new RandomAccessFile(sName,"rw"); f`[gRcZ- this.nPos = nPos; No'^]r oSavedFile.seek(nPos); ITq$8 } _6"YWR -f4>4@y t$*V*gK{ public synchronized int write(byte[] b,int nStart,int nLen) ;'|Mt)\ { uia[>&2 int n = -1; 3hPj;-u try{ x'uxSeH$ oSavedFile.write(b,nStart,nLen); M.[A%_|P n = nLen; x c[BQ|P= } G T3wJQ5N catch(IOException e) opQdym { ](z?zDk e.printStackTrace (); bSKe@4C } ]xYm@%>6 X-Q;4M-CJ :.K#=ROP return n; Yw\7` } kJOSGrg 5W(S~} ToNRY<! } h|DKD. -%h0`hOG{ 60A
E~ /* UP*\p79oO **SiteInfoBean.java nj@l5[ */ +dt b~M package NetFox; cSkJlhwNn }'FNGn.~# C8J3^?7E public class SiteInfoBean { >`@c9
m tR;? o,T v)TFpV6b{p private String sSiteURL; //Site's URL EZz`pE private String sFilePath; //Saved File's Path }EW@/; kC private String sFileName; //Saved File's Name M<
T[%)v private int nSplitter; //Count of Splited Downloading File rLy<3 7n_'2qY ZgXn8O[a public SiteInfoBean() YTtuR` {//nSplitter的缺省值为5 syseYt] //default value of nSplitter is 5 Yy_o*Ozq this("","","",5); z@_9.n] } 6*cY[R|q! @eQo w'Cn3b)` public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) RCS91[ { f a9n6uT sSiteURL= sURL; cITF=Ez sFilePath = sPath; :EXH8n&| sFileName = sName; N~w4|q!] this.nSplitter = nSpiltter; Fp`MX>F bc".R] @`</Z) } $oJ)W@> )bM #s">Y <Bmqox0 public String getSSiteURL() icX$<lD { LPOZA` return sSiteURL; |H,g}XWMU } K]b_JDEk azUEp8`| V&'
:S{i public void setSSiteURL(String value) =Wl*.%1 b { SSS)bv8m sSiteURL = value; Fe4QWB6\U } >/kwy2 7=o2$ 4/Vy@h"A3 public String getSFilePath() hKT ]M[Pv { N'#Lb0`B return sFilePath; CD]2a@j{ } =h083|y> 'pUJlPGx 6iozb~!Rr public void setSFilePath(String value) BBub' { Qe~2'Hw#9 sFilePath = value; Qoj}]jve } 8Jz/' /$IF!q+C is3nLm( public String getSFileName() %PsDS { QSn%~o05 return sFileName;
O$> <E8q } t*fG;YOg +3c!.] o; x bG'![OX public void setSFileName(String value) %Jrdr`< { NMSpi[dr sFileName = value; UL/|!(s } O\5*p=v ]g>@r.Nc %HRFH public int getNSplitter() {(DD~~)D { 3wS{@' return nSplitter; !
Z e } S;o U'KOY )$#r6fQO dh7PpuN{ public void setNSplitter(int nCount) !U,^+"l'GP { -jZP&8dPH nSplitter = nCount; 3X+uJb2 } !Q,A#N( } S=Ihg
@~!1wPvF`I 5-277? /* >.D0McQg **Utility.java ;w(]z */ + *YGsM`E9 package NetFox; BO5gwvyI @-z#vJ5Qe{ AUloP?24 public class Utility { 728}K^7: iA~b[20& imx/hz! public Utility() $jYwV0 { ub"(,k P s$Il; {__Z\D2I } 1}E`K# JJnZbJti //线程睡眠 SL;\S74 public static void sleep(int nSecond) 0Fw0#eE { Ozk^B{{o
try{ o6pnTu Thread.sleep(nSecond); TQ?D*& } H=vrF - # catch(Exception e) :E|HP#iwu { 1i}Rc: e.printStackTrace (); mT.p-C } IJ^KYho } }2Lh'0 xY )x.}B4z //日志 _tR%7%3* public static void log(String sMsg) U.oxLbJ` { (~oUd4 System.err.println(sMsg); ]fXMp*LvY } rK*s/mX < +#5nk,1c> j+3~ public static void log(int sMsg) ]JX0:'x^ { TEZ^Ia System.err.println(sMsg); /Yk2 |L } Kp*nOZ } "C$z) 47_4`rzy; ?~rF3M.=| /* O)MKEMuA **TestMethod.java e~r%8.Wm */ 5_+vjV;5 package NetFox; -OpI,qyS 4#uWj?u PsDks3cG public class TestMethod { ?)#dP8n b 2n.v.$G j380=?7 public TestMethod() Qp7|p { ///xx/weblogic60b2_win.exe cL&V2I5O try{ Q5e ,[1 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); %t0Fx //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); R@``MC0 SiteFileFetch fileFetch = new SiteFileFetch(bean); ?;.j) fileFetch.start(); V *=To } X75>C< catch(Exception e){e.printStackTrace ();} uROt h_/ tRYMK+ >9W ;u` } . m_y5J 9`\hG%F @<--5HbX public static void main(String[] args) Nt#zr]Fz { yy4QY% new TestMethod(); ?7@Y=7BS4 } @EzSosmF } )t{oyBT 点击下载更多相关资料
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