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/* f@lRa>Z(Fm **SiteFileFetch.java {tn%HK"> */ N}Ozm6Mc package NetFox; +~mBo+ , import java.io.*; l}B,SkP^ import java.net.*; 2ijw g~_@ H~x,\|l# qYZ\<h^ public class SiteFileFetch extends Thread { j;@7V4' l<0BMw S8 !m(5N4:vV SiteInfoBean siteInfoBean = null; //文件信息Bean z17 long[] nStartPos; //开始位置 TZL)jfhj long[] nEndPos; //结束位置 >J>4g;Y FileSplitterFetch[] fileSplitterFetch; //子线程对象 wjYwQ= y5 long nFileLength; //文件长度 6?OH"!b2-} boolean bFirst = true; //是否第一次取文件 !Ziq^o. boolean bStop = false; //停止标志 'V=w?G
5 File tmpFile; //文件下载的临时信息 2}:scag DataOutputStream output; //输出到文件的输出流 [I:D\)$< 2^N
4( //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) d[;=X .fZ2 public SiteFileFetch(SiteInfoBean bean) throws IOException )TV4OT# { AU@K5jwDwQ siteInfoBean = bean; zn|~{9>y //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 6'd=% V tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); R4=n">>Q if(tmpFile.exists ()) i_T8Bfd: { $>zLa_cn| bFirst = false; =BO} hk read_nPos(); 13(JW
} >i=^Mh-bm else RbUBKMZU { +`g&J nStartPos = new long[bean.getNSplitter()]; Z7?C^m nEndPos = new long[bean.getNSplitter()]; }.w@.
S" } Q-78B'!= ukBj@.~ e(E6 t_ <EKDP>,~ } >!:uVS +FiM?,G /N(L52mz public void run() ZZqImB.Cz6 { )u~LzE]{_ //获得文件长度 ]l.y/pRP5[ //分割文件 :=x-b3U //实例FileSplitterFetch = BW>jD //启动FileSplitterFetch线程 ) 9h5a+Z //等待子线程返回 ':6!f try{ KZ^W@*`D if(bFirst) '#d`K.;_b. { V4p4m@z^u nFileLength = getFileSize(); hKP!;R if(nFileLength == -1) 2lPj%i 5 { 16=tHo8| System.err.println("File Length is not known!"); Z"rrbN1 } G\3@QgyQ else if(nFileLength == -2) Xi3:Ok6FZ { Ht#5;c2/ System.err.println("File is not access!"); !DFT}eu } yAOYe"d else ((L=1]w { "1P8[ for(int i=0;i<nStartPos.length;i++) gE8p**LT+ { VE{[52 nStartPos = (long)(i*(nFileLength/nStartPos.length)); yZFm<_9> } [U[saR\ for(int i=0;i<nEndPos.length-1;i++) #xZ7% { \5.36Se nEndPos = nStartPos[i+1]; 3D>syf } LO{{3No nEndPos[nEndPos.length-1] = nFileLength; w7}m
T3p,) } ]&%_Fpx } ta\AiHm _/0vmgQ& :/'2@M //启动子线程 hhQLld4 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; D>wq4u for(int i=0;i<nStartPos.length;i++) t~m > \(& { V"=(I'X fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), pX3Q@3,$ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), mEsOYIu{ nStartPos,nEndPos,i); Nb/W+& y Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); f,{O%*PUA fileSplitterFetch.start(); E'qGK T } >g8H // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), D.?Rc'yD siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); :^".cs?g // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", luD.3&0n nEndPos = " + nFileLength); W.b?MPy] // fileSplitterFetch[nPos.length-1].start(); ^6Y4= $w{!}U 2+- x#z}A&
//等待子线程结束 (bnyT?p% //int count = 0; Z}74%
9qE //是否结束while循环 )`5kfj boolean breakWhile = false; YSi[s*.G _(=[d w_o|k&~, while(!bStop) M_@%*y\o { 3B| ?{U~ write_nPos(); s"5f5Cn/Wh Utility.sleep(500); )i@j``P breakWhile = true; It.G-( =8BMCedH| $S{B{FK for(int i=0;i<nStartPos.length;i++) /7Z5_q_ { }S84^2J_ if(!fileSplitterFetch.bDownOver) 9Qja|; { CD|)TXy breakWhile = false; >D20f<w(H break; $|~YXH~O } f?)BAah } ?`R;ZT)U- if(breakWhile)
LJ7Qwh_", break; <n+?7`d, )Zx;Z[ #P[d?pY //count++; O_@ //if(count>4) 9 -7.4!]I // siteStop(); ~RdJP'YF- } !bEy~. a(>oQG8F 4t3Y/X System.err.println("文件下载结束!"); 0N02 E } D|`O8o?) catch(Exception e){e.printStackTrace ();} nlv8HC } CMk0(sztU_ Y"J'
'K q)S70M_1 //获得文件长度 x;d*?69f] public long getFileSize() bF'Y.+"dr { C4vmgl& int nFileLength = -1; 3|1ug92
try{ $#q:\yQsPC URL url = new URL(siteInfoBean.getSSiteURL()); .~J}80a/ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); dUAZDoLi httpConnection.setRequestProperty("User-Agent","NetFox"); :oRR1k $Pw@EC] t
As@0`x9 int responseCode=httpConnection.getResponseCode(); J,@SSmJ` if(responseCode>=400) "[W${q+0x { s^:8bFn9$ processErrorCode(responseCode); vU5a`0mH return -2; //-2 represent access is error vFuf{ @P } )*!"6d)^ P,.<3W"4i ? [~ "$ String sHeader; j*2Q{ik>J %6-5hBzZN b5r.N1ms for(int i=1;;i++) !V|%n(O" { v X=zqV //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5}J|YKyP //Utility.log(in.readLine()); 34k}7k~n sHeader=httpConnection.getHeaderFieldKey(i); )a:j_jy if(sHeader!=null) _
U/[n\oC { R+}x# if(sHeader.equals("Content-Length")) \^=Wp'5R { p'#
(^ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); rl#[HbPM break; 46U?aHKW@| } "Me)' } CUz1q*): else Snm
m(. break; P<&-8QA } jkz.qo-% } :)/%*<vq, catch(IOException e){e.printStackTrace ();} ~hYTs catch(Exception e){e.printStackTrace ();} 8^/V2;~^,> a;},y|'E 879x(JII Utility.log(nFileLength); O0|**Km\+ '3B\I# v.eN Wp return nFileLength; G-5wv } kVu8/*Q h!c6]D4!L ;=.i+ //保存下载信息(文件指针位置) 2L=+z1%I private void write_nPos() pVuJ4+` { }d<xbL!# try{ p.Y
= output = new DataOutputStream(new FileOutputStream(tmpFile)); p1zT] output.writeInt(nStartPos.length); wW5:p]<Y for(int i=0;i<nStartPos.length;i++) Jptzc:~B { B.:DW3 // output.writeLong(nPos); (wxdT6RVm\ output.writeLong(fileSplitterFetch.nStartPos); `gI`Cq4 output.writeLong(fileSplitterFetch.nEndPos); g~zz[F 8U } z&a%_
]Q* output.close(); !rmXeN]-r } }B-@lbK6) catch(IOException e){e.printStackTrace ();} ;'^5$q catch(Exception e){e.printStackTrace ();} 3$cIm+ } >0#WkmRY uU_0t;oR3 l| /tKW //读取保存的下载信息(文件指针位置) \W"N{N private void read_nPos() qs$%/ { Gp}:U>V) try{ #;4afj:2g DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 8|:bis~wm int nCount = input.readInt(); )(&Z&2~A nStartPos = new long[nCount]; gY)NPi}!` nEndPos = new long[nCount]; f>g<:.k* for(int i=0;i<nStartPos.length;i++) f-Yp`lnn.d { ym>>5 (bni nStartPos = input.readLong(); XaFu(Xu7 nEndPos = input.readLong(); >.P/fnvJ } )s @}|` input.close(); k91ctEp9> } -!X,MDO catch(IOException e){e.printStackTrace ();} T6
K?Xr{_ catch(Exception e){e.printStackTrace ();} os=Pr{ } -,;r %7T Oa[G
# I/whpOg private void processErrorCode(int nErrorCode) <
5%:/j { <<xUh|zE System.err.println("Error Code : " + nErrorCode); B/P E{ / } AsBep *rs@6BSj y.KFz9Qv //停止文件下载 xG802?2i/; public void siteStop() {J`]6 ba { Y[oNg>Rz bStop = true; LyEM^d] for(int i=0;i<nStartPos.length;i++) .}AzkKdd@ fileSplitterFetch.splitterStop(); I-@A{vvPK Y}G 9(Ci& ]p,svevo } +`;YK7o } u}zCcWP|L //负责部分文件的抓取 ]Q?`|a+i **FileSplitterFetch.java H9 d!-9I */ DK!QGATh package NetFox; B hO*Pfs 3<5E254N _?9|0>]xG import java.io.*; 0+a-l[!p import java.net.*; ;<aT|4 x1g0_&F 9qhX\, h public class FileSplitterFetch extends Thread { 5"x=kp>!d s7x&x;- 8M{-RlR String sURL; //File URL qs96($ long nStartPos; //File Snippet Start Position .XD.'S long nEndPos; //File Snippet End Position RnvPqNs int nThreadID; //Thread's ID oCl
$ 0x boolean bDownOver = false; //Downing is over QkEIV<T&)l boolean bStop = false; //Stop identical z#$>f*b FileAccessI fileAccessI = null; //File Access interface PL+j;V(< L4fM?{Ic:s 8T:?C~" public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Z*9Qeu-N: { {8'f>YP this.sURL = sURL; J(k\Pz* this.nStartPos = nStart; ?`m#Y&Oi this.nEndPos = nEnd; <ptskbu nThreadID = id; l%$~X0%DM fileAccessI = new FileAccessI(sName,nStartPos);//定位 xq U@87[_ } {F Ir|R& cqP)1V] ~OuK ewr\ public void run() i ,[S1g { )oEHE7 y while(nStartPos < nEndPos && !bStop) 75u5zD { 4Nz@s^9 Y[(U~l,a+ hJkP_(+J\ try{
: h"Bf@3 URL url = new URL(sURL); {8!\aYI HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); R2]2#3` httpConnection.setRequestProperty("User-Agent","NetFox"); jH4,- String sProperty = "bytes="+nStartPos+"-"; Hr?_`: httpConnection.setRequestProperty("RANGE",sProperty); /< OoZf+[ Utility.log(sProperty); aP#nK k9V#=,K0 K,ccM[hu| InputStream input = httpConnection.getInputStream(); 8'niew
5d //logResponseHead(httpConnection); +3;`4bW cip"9|" {LwV&u( byte[] b = new byte[1024]; .u+ZrA# int nRead; :A~6Gk92A while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) +prr~vgE { 3RwDIk?>% nStartPos += fileAccessI.write(b,0,nRead); V^v?;f? //if(nThreadID == 1) f
WUFCbSU // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); z5V~m_RO } ?+Q?K30: =vd9mb- B+8lp4V9% Utility.log("Thread " + nThreadID + " is over!"); #@quuiYq bDownOver = true; w1#1s| //nPos = fileAccessI.write (b,0,nRead); -&AgjzN! } 12D>~#J catch(Exception e){e.printStackTrace ();} Ys+2/>! } u$vA9g4 } 4[&L<D6h m%=]
j<A vpnOc2 - //打印回应的头信息 +>w %j&B public void logResponseHead(HttpURLConnection con) '@jP$6T& { D-v}@tS' for(int i=1;;i++) M,uQ8SZA[ { v;%>F)I String header=con.getHeaderFieldKey(i); d*M:PjG@ if(header!=null) C(4r>TNm //responseHeaders.put(header,httpConnection.getHeaderField(header)); /t4#-vz Utility.log(header+" : "+con.getHeaderField(header)); T@Q,1^?i else vs*Q { break; ##_`)/t, } 1N3qMm^ } ^V5VRGq JemB[ Te\i;7;4u public void splitterStop() lRy^Wp { /=+y[y3` bStop = true; 53g(:eB }
`oPUf! vv F: d=*&=r0!C{ } @(b;H0r~ AW\#)Em >j%4U* /* km 0LLYG **FileAccess.java =!V-V}KK- *//文件访问(定位,写) eu^B package NetFox; "
M+g= import java.io.*; 5s /fBS F\)?Ntj)>@ B%L dH public class FileAccessI implements Serializable{ Ub"6OT1tl UP+4xG //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 4^OPzg6Z%p RandomAccessFile oSavedFile; 8|U-{"!O? long nPos; 0q ! ?'jRUf l s)eU^4m public FileAccessI() throws IOException UtpK"U$XOU { R9-Ps qmF this("",0); 3-%F)@n } ML)5nJD x5Z(_hU s|q]11r+H public FileAccessI(String sName,long nPos) throws IOException #_U[T { Z1&<-T_ oSavedFile = new RandomAccessFile(sName,"rw"); u/,ng&! this.nPos = nPos; gf]k@-) oSavedFile.seek(nPos); HOY@<' } fxcCz 5 '^6jRI,
i*3*)l y public synchronized int write(byte[] b,int nStart,int nLen) +{7/+Zz { ;_ TP Jy int n = -1; vIK+18v7 try{ 7)FI_uW oSavedFile.write(b,nStart,nLen); Y/Dah* n = nLen; ~4}'R_ } 8b!-2d:* catch(IOException e) f:!b0j { U~nW>WJ+. e.printStackTrace (); 2Jl$/W 3 } EPn0ZwnS:M Ra~|;(
%d {~=Z%Cj2Q return n; BT3X7Cx } eGEeWJ}[$ M{ t:N3k ;k } =]Vrl-a`^ Q=}U Nfdh0v /* ~d)2>A2: **SiteInfoBean.java @qaK5 */ vf&Sk` package NetFox; ]y52%RAKI '(S@9%,aK1 y(2FaTjM public class SiteInfoBean { ;v=v4f'+ Gd:fh5u': B}|(/a@* private String sSiteURL; //Site's URL qz]g4hS private String sFilePath; //Saved File's Path nN|1cJ'.Fk private String sFileName; //Saved File's Name `{
6K~( private int nSplitter; //Count of Splited Downloading File jeLC)lQ* {YT@$K]w, !92zC._ public SiteInfoBean() c1CUG1i {//nSplitter的缺省值为5 mY& HK) //default value of nSplitter is 5 [$+N"4 this("","","",5); &nXa/XIZ_ } C EMe2~ uLK4tQ LNU#NJ^Axt public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) u&7c2|Q { JPt0k sSiteURL= sURL; x]X!nx6G sFilePath = sPath; {r.yoI4e sFileName = sName; 9[7Gxmf this.nSplitter = nSpiltter; "^3pP(8;~ Pm} A"PmoV?lAm } _=s{,t
&u q n2X._` ^CtA@4 public String getSSiteURL() 6%8,OOS { ~,:
FZ1wh return sSiteURL; gb,X"ODq } g5,Bj DFUW^0N qyl9#C(a public void setSSiteURL(String value) _w\A=6=q| { a{deN9Qn sSiteURL = value; =4H"&Eu{ } Hb:@]!r> { :~D #383W)n
public String getSFilePath() IBY(wx[5S { hiM nU return sFilePath; tPb$ua| } B[8`l} t kd3vlp P!*G"^0< public void setSFilePath(String value) A@I ( &Z { C2/B1ba sFilePath = value; }vGWlNd#g } %=t8 4#c-?mh_ WdvXVF public String getSFileName() Vr1yj { zG0191f return sFileName; q8_8rp-@ } <JyF5 N)tqjq pMy];9SvW public void setSFileName(String value) x6BO%1 { @9X+ BdQU sFileName = value; 'U8% ! } o7A+O%dX F4xXJ"vc ^o@N.+`&< public int getNSplitter() u#&ZD| { =,4iMENm! return nSplitter; X":T>)J- } FO/[7ZH q(C <w {*jo,<4ee public void setNSplitter(int nCount) o8A1cb4<T { D+u#!t[q nSplitter = nCount; X\yy\`o } 4sCzUvI~Y1 } Dno'-{- `uN}mC!r] #@cOyxUt /* )^^Eh=Kbj **Utility.java $afE=
qC* */ E/6@>.T?' package NetFox; q]qKU`m!Q` 4U1!SR]s `YinhO:Z public class Utility { [IgB78_$ ^ rB7&96C, 2[;4D/`* public Utility() GqT0SP { jLy3c@Dp Y>l92=G ee+*&CT) } <PayP3E 2VgDM6h //线程睡眠 d>f.p"B.gj public static void sleep(int nSecond) 0kp#+&)+ { >cE@m=[ try{ .e,(}_[[< Thread.sleep(nSecond); A3#^R%2)W } bx5f\) catch(Exception e) 3r[}'ba\ { NPFrn[M$ e.printStackTrace (); R;{y]1u } r-,P } "iC*Eoz#. j18qY4Gw) //日志 \`!M5FJ public static void log(String sMsg) @2>j4Sc { \>%.ktG System.err.println(sMsg); REe<k<>p~ } >Wbt_%dKy ~$PQ8[= s:fy
*6=[Z public static void log(int sMsg) MBO3y&\S4 { '0juZ~>} System.err.println(sMsg); TO|&}sDh } u0M? l } GF3"$?Cw vp>,}nx4 g3`:d)| /* 4.^1D';( **TestMethod.java D@]*{WO */ {r$n
$ package NetFox; fF"\$Ny <A_L Zi $<~o,e-4 public class TestMethod { oOU?6nq fF\s5f#: )U~,q>H+
% public TestMethod() %~`y82r6 { ///xx/weblogic60b2_win.exe >C1**GQ try{ zh<[/'l SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); eVVm"96Q.; //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); xXJl Qbs SiteFileFetch fileFetch = new SiteFileFetch(bean); PZDj)x_%B& fileFetch.start(); S5W*,? } rerl-T<3 catch(Exception e){e.printStackTrace ();} (q@DBb4 )G
a%Eg9 _Kw<4$0<p } UZ`G S$D@ +-VkRr# %]zaX-2dm! public static void main(String[] args) wTL&m+xr { ZE!dg^-L new TestMethod(); )Ycjx~
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