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/* hVFZQJ?cv **SiteFileFetch.java Fwvc+ a */ :1"k`AG package NetFox; Bz%wV- import java.io.*; z.h;}QRJ,@ import java.net.*; P,G
:9x"e 5w~J"P6jg c;a<nTLn public class SiteFileFetch extends Thread { ^e\$g2). n8\88d K2v[_a~@ SiteInfoBean siteInfoBean = null; //文件信息Bean ?-0, x|ul long[] nStartPos; //开始位置 E 8$S0u;` long[] nEndPos; //结束位置 y5^OD63s FileSplitterFetch[] fileSplitterFetch; //子线程对象 &b%2Jx[+ long nFileLength; //文件长度 #tw_`yh boolean bFirst = true; //是否第一次取文件 bl10kI:F boolean bStop = false; //停止标志 ?y"M># File tmpFile; //文件下载的临时信息 `q | )_ DataOutputStream output; //输出到文件的输出流 hc9ON&L\> jWvi%Iqi //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) xd"+ &YT public SiteFileFetch(SiteInfoBean bean) throws IOException N<Ym&$xR { ?V~vP%1 siteInfoBean = bean; +RiI5.$=Z //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); q^ &r<i tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); z/WGL if(tmpFile.exists ()) X -=M>H^ { u35"oLV6}# bFirst = false; DV>;sCMJ % read_nPos(); LU@1Gol } f+)LVT8p else =E(ed,gH8 { :}#j-ZCC"
nStartPos = new long[bean.getNSplitter()]; xDS]k]/(T nEndPos = new long[bean.getNSplitter()]; Z@*!0~NH=4 } O OABn* Fs =)*6}& <{YzmN\Z 23'{{@30 } FKhgUnw im)r4={
9 P{J9#.Zq&s public void run() 6V6Mo}QF
s { +o0yx U
7t //获得文件长度 t0/Ol'kgs //分割文件 cBOt=vg,5 //实例FileSplitterFetch Rz&}e@stl //启动FileSplitterFetch线程 ,Qo:]Mj //等待子线程返回 >'WTVj ` try{ WyM2h if(bFirst) ZnuRy: { '*@=SM nFileLength = getFileSize(); #i*PwgC%_ if(nFileLength == -1) F,K))325 { q['3M<q System.err.println("File Length is not known!"); }5$le] } Yn?Xo_Y else if(nFileLength == -2) U.I7p { 4v{Ye,2 System.err.println("File is not access!"); lh XD9ed } Tfv@oPu else &%(SkL_] { *%atE for(int i=0;i<nStartPos.length;i++) $
)2zz>4 { SD@ 0X[ nStartPos = (long)(i*(nFileLength/nStartPos.length)); ?=-/5A4K } y4=T0[
V for(int i=0;i<nEndPos.length-1;i++) F8/n; { Qs8yJH`v nEndPos = nStartPos[i+1]; g
4$ } VyNU<} nEndPos[nEndPos.length-1] = nFileLength; Es\J%*\u } DPmY_[OAE } .vi0DuD6 ^4Se=Hr
z2 uFlf#t
= //启动子线程 :C0)[L fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; yB{1&S5C for(int i=0;i<nStartPos.length;i++) &arJe!K { gnb+i` fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _,e4?grP# siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),
Z}SqiT nStartPos,nEndPos,i); o,0
Z^"| Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _oefp*iWS fileSplitterFetch.start(); 7 ,uD7R_ } [;:ocy // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), CkV -L4Jq siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); r5$!41 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", VOg'_#I nEndPos = " + nFileLength); -?IF'5z // fileSplitterFetch[nPos.length-1].start(); ``{GU}n x>A[~s"|N xnw' &E //等待子线程结束 !#e+!h@ //int count = 0; )}_}D+2 //是否结束while循环 (b"q(:5oX boolean breakWhile = false; 43rV> W, ol
{N^fiK k!6m'}v while(!bStop) ]j$(so" { mGF)Ot R write_nPos(); h^14/L=| Utility.sleep(500); W58%Zz4a breakWhile = true; A
;|P\V I58$N+# IfI:|w}:"r for(int i=0;i<nStartPos.length;i++) 8&qtF.i-6 { 6 lEv<)cC if(!fileSplitterFetch.bDownOver) vuJEPn% { AOV{@b( breakWhile = false; _?I*::
I break; 34_
V&8 } <R_)[{ 7 } "%_T7A ![ if(breakWhile) <w?k<%( 4 break; 2l:cP2fa $ma@z0%8} //count++; l=$?#^^ / //if(count>4) Wk!<P"
nHd // siteStop(); VT#`l0I} } 3RFU NJQy*~P 2zX9c<S=5 System.err.println("文件下载结束!"); =&FaMR2 } jL'R4z catch(Exception e){e.printStackTrace ();} lWP]}Uy=5~ } w:R#F(
'B FNo.#Z5+b n(SeJk%>9 //获得文件长度 m6gMVon public long getFileSize() r{Mn{1:O { ?papk4w int nFileLength = -1; w2lO[o~x} try{ (eHTXk*V` URL url = new URL(siteInfoBean.getSSiteURL()); S&J5QZjC HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \
*g3j httpConnection.setRequestProperty("User-Agent","NetFox"); 3Lv5>[MnN S{{wcH$n'i :1]J{,VG int responseCode=httpConnection.getResponseCode(); 1vJj?Uqc if(responseCode>=400) ~K(mt0T) { BV}sN{ processErrorCode(responseCode); EDF0q i return -2; //-2 represent access is error .%M80X{5~ } <l eE.hhf. ;Qc^xIPy WQBV~.<Yv String sHeader; G%K&f1q% 4<f^/!9w g\iSc~%? for(int i=1;;i++) Lnq CHe { .4<lw //DataInputStream in = new DataInputStream(httpConnection.getInputStream ());
f<'D?d)L^ //Utility.log(in.readLine()); W"A3$/nq^ sHeader=httpConnection.getHeaderFieldKey(i); 6X4r2Vq if(sHeader!=null) BD]o+96qP { 6k{gI.SG if(sHeader.equals("Content-Length")) Pw6%,?lQ { 38:5g_ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); nXjSf break; Ie s` !W^ } ?t/\ ID } E, oR.B else ,V zbKx, break; Zv8_<>e } ?H_>?,^ } \pP1k.~UnC catch(IOException e){e.printStackTrace ();} 5Ux= 5a catch(Exception e){e.printStackTrace ();} <@0S]jy Q6N?cQtOT pA_e{P/ Utility.log(nFileLength); rdAy '38g x]4>f[>*> 6(ER$ return nFileLength; k(@W
z>aCv } ]a[2QQ+g J\J3'u u0qTP] //保存下载信息(文件指针位置) J]Rh+@r. private void write_nPos() lfr^NxO U { E;q+u[$ try{ sG^{
cn output = new DataOutputStream(new FileOutputStream(tmpFile)); C@pn4[jTl output.writeInt(nStartPos.length); OXB 5W#$ for(int i=0;i<nStartPos.length;i++) C3
BoH& { d vo|9 > // output.writeLong(nPos); JcfGe4 output.writeLong(fileSplitterFetch.nStartPos); ZzP&Zrm output.writeLong(fileSplitterFetch.nEndPos); oqg +<m } ^)a j,U[ output.close(); _'n]rQ' } 9XUk.Nek catch(IOException e){e.printStackTrace ();} G6xNR catch(Exception e){e.printStackTrace ();} b7gN|Hw5 H } ]]y,FQ,r _G2)=yj] xP27j_*m> //读取保存的下载信息(文件指针位置) bHXoZix private void read_nPos() w U1[/ { {Eqx'j try{ r- Y7wM`TZ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); +k/=L9#e int nCount = input.readInt(); /fU-0a8 nStartPos = new long[nCount]; |C0!mU nEndPos = new long[nCount]; {xICR ~,* for(int i=0;i<nStartPos.length;i++) l j+p}dt { m9\~dD nStartPos = input.readLong(); t%@u)b p nEndPos = input.readLong(); Zb'a+8[ } TKVS%// input.close(); aEun *V^, } ]Z52L`k catch(IOException e){e.printStackTrace ();} }VHvC" catch(Exception e){e.printStackTrace ();} ~&"'>C# } 9S l5jn $FZcvo3@*S B$7Cjv private void processErrorCode(int nErrorCode) y
k\/Cf { 2+*o^`%4P System.err.println("Error Code : " + nErrorCode); 05
.EI)7 } lwjA07i 0WyOORuK u<+"#.[2v~ //停止文件下载 i<q_d7-W' public void siteStop() PI"6d)S2 { ='-/JH~ bStop = true; 5XuQQ!` for(int i=0;i<nStartPos.length;i++) w@\4ft6d fileSplitterFetch.splitterStop(); kL<HG Qt Z>dvth r"t,/@`n } 7f<@+& } 1Ve~P"w //负责部分文件的抓取 ~B7<Yg **FileSplitterFetch.java VZ7E#z+nM# */ *?>52 -&b package NetFox; ih|&q ,vBB". LY' &2n5m& import java.io.*; VJ1rU mO~ import java.net.*; n;~'W*Ln0 Qo*OC 9E` l% qh^0 public class FileSplitterFetch extends Thread { by$mD_sr rqKK89fD'
^b^buCYw String sURL; //File URL n]>L"D, long nStartPos; //File Snippet Start Position |3hNTH? long nEndPos; //File Snippet End Position Ix~rBD9 int nThreadID; //Thread's ID mcs!A/]< boolean bDownOver = false; //Downing is over m\_v{1g boolean bStop = false; //Stop identical ' t^ r2N/ FileAccessI fileAccessI = null; //File Access interface Ri*mu*r\} =Ew77 n;QFy5HB8 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _:Jma { [ fs.D / this.sURL = sURL; S %wdXe this.nStartPos = nStart; B3I0H6O this.nEndPos = nEnd; z$Qy<_l nThreadID = id; N Ff`V fileAccessI = new FileAccessI(sName,nStartPos);//定位 y(Em+YTD } 6=*n$l#} c_aj-`BKp kZR(0,
W public void run() zhY]! { f=Oj01Ut* while(nStartPos < nEndPos && !bStop) N9u {)u { 4E$d"D5]>p 98vn"=3 o)'06FF\$ try{ D4?cnwU URL url = new URL(sURL); JM53sx4& HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <L2z| %` httpConnection.setRequestProperty("User-Agent","NetFox"); =dp`4N String sProperty = "bytes="+nStartPos+"-"; R'oGsaPB2 httpConnection.setRequestProperty("RANGE",sProperty); } V"A;5j` Utility.log(sProperty); WE+Szg(4x [}}q/7Lp sWi4+PAM0 InputStream input = httpConnection.getInputStream(); '>T hn{ //logResponseHead(httpConnection); o?I`n*u"X 8:Dkf v J?1Eh14KZ byte[] b = new byte[1024]; *|gl1S int nRead; P~PM $e while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) &3itBQF { =p dLh nStartPos += fileAccessI.write(b,0,nRead); 474
oVdGx //if(nThreadID == 1) 2Tv
W 6 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $F]*B
` } g'EPdE di<g"8 +;bZ(_ohG Utility.log("Thread " + nThreadID + " is over!"); :*cd$s bDownOver = true; 'CRjd~L //nPos = fileAccessI.write (b,0,nRead); []?*}o5&>T } /74)c~.W catch(Exception e){e.printStackTrace ();} Gsz$H_ } sXY{g0% } o?aF wBEBj7(y FMitIM*]
//打印回应的头信息 .Vs|&c2im public void logResponseHead(HttpURLConnection con) 7324#Hw S { 5JG`FRW! for(int i=1;;i++) om6`>I* { Vygh|UEo String header=con.getHeaderFieldKey(i); Gc;-zq if(header!=null) /sqfw,h@ //responseHeaders.put(header,httpConnection.getHeaderField(header)); j|b$b,rF\ Utility.log(header+" : "+con.getHeaderField(header)); \)2'+R else Z}3;Ych break; "kKIv|` } 4I.)>+8V } \@zoM:[sN \[/}Cy Yfy";C7X public void splitterStop() QHtN_Q_F { >}d6)s| bStop = true; fr8';Jm } @[Wf!8_
vF'IK, ~N)(|N } hK3Twzte
8L`wib2 YI]/gWeu /* xJOp~fKG **FileAccess.java |{rhks~ *//文件访问(定位,写) 9MbF: package NetFox; fS%B/h= import java.io.*; "Q{7X[$$^ u=0161g LwH+X:?i public class FileAccessI implements Serializable{ t{Ks}9B f+Fzpd?w S //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 d~T@fa RandomAccessFile oSavedFile; <<9|*Tz long nPos; )[=C@U {l\Ep=O vx WWLf'89It public FileAccessI() throws IOException Wq<HsJd/ { y"H(F,(N this("",0); %-|$7?~ } khQfLA `'pfBVBz eGWwPSIp public FileAccessI(String sName,long nPos) throws IOException 'a~F'FN$ { =~q$k oSavedFile = new RandomAccessFile(sName,"rw");
`Y,Rk this.nPos = nPos; NYR:dH]N~d oSavedFile.seek(nPos); r_o\72 } xSq+>, b )H&ZHaO,_ }x_:v!G public synchronized int write(byte[] b,int nStart,int nLen) 4OG1_6K { DH.CAV int n = -1; zXe]P(p< try{ 0bu!(Tpg7 oSavedFile.write(b,nStart,nLen); qR4-~p8 n = nLen; vI(CX]o } q%XjJ -s: catch(IOException e) @J6V, { ]@l;;Sp e.printStackTrace (); O_*tDq,e } _?XR;2] s|R`$+'{ `*B6T7p1 return n; ^Jc|d,u;s } OSwum!hzN M0]J`fL@ XFi9qL^ }
2l~qzT- w4RtIDW: =
jTC+0u /* .la_u8A] **SiteInfoBean.java w(Q{;RNM; */ }RQHsS package NetFox; 3X9 /5?tXH" 66po SZR@ public class SiteInfoBean { k?_uv k:&B
b" ]'z 5%' private String sSiteURL; //Site's URL `a@YbuLd private String sFilePath; //Saved File's Path ];QX&";Z private String sFileName; //Saved File's Name +t(Gt0+ private int nSplitter; //Count of Splited Downloading File !{A#\~, Jn20^YG 3+!G9T! public SiteInfoBean() rt\.|Hr4s {//nSplitter的缺省值为5 +0:]KG!Zs. //default value of nSplitter is 5 c >xHaA:V this("","","",5); BD mF+ } P[H 4Yp 4u1au1c BD M"";u public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) F*y7 4j, { I0_>ryA sSiteURL= sURL; Qn@[{%),4 sFilePath = sPath; Yr>7c1FZi sFileName = sName; WH.3 this.nSplitter = nSpiltter; fhro"5/4 |gfG\fL3V | 8akp } Iz!]LW g,f
AVM M[0NB2`Wp public String getSSiteURL() 9]|C$;kw@ { y!~ }7= return sSiteURL; (^~~&/U_U$ } +y 48.5 mS+sh'VH ZD<e$PxxCd public void setSSiteURL(String value) O
2+taB { 6vg` 8 sSiteURL = value; iVb7>d9} } 2WB`+oWox c(s: f@ 1 @\U] hN? public String getSFilePath() id>2G
%Tx { Crezo? return sFilePath; 1#|qT7 } W O'nW QF$s([ c']m5q39' public void setSFilePath(String value) +]e) :J { caL\ d sFilePath = value; $]J<^{v } s=<65 8,)<,g-/= 0*KL*Gn public String getSFileName() QH k jxj { Yd<9Y\W%? return sFileName; perhR!#J } 9e;:(jl^ pR!m |Pv)&'B" public void setSFileName(String value) g2YE^EKU~ {
L$@qEsO sFileName = value; =RHIB1 } l(8@?t^; #d$lN}8 4@M`BH` public int getNSplitter() 7MhaLkB_6 { :,.HJ[Vg& return nSplitter; jEL"Q?# } 3s#/d,+ :b,An'H n/%M9osF public void setNSplitter(int nCount) q<cxmo0S { >oapw5~5 nSplitter = nCount; <Kk?BRxi } D@m3bsMwe } !^Q4ZL,- ;Ao`yC2(v sRC?l_n; /* S) `@)sr **Utility.java qCm8R@ */ VwT&A9&{8 package NetFox; .RWq!Z=)3 _D8:p>= _TbvQY public class Utility { RG_6&
A }5}#QHF -gv[u,R public Utility() L#N]1#; { lN*"?%<x> +^[SXI^JaJ 5-:H } `~h8D9G 8(* ze+8 //线程睡眠 Ba76~-gK$ public static void sleep(int nSecond) Xvxrz{ { ,v#3A7"yW try{ 0hq\{pw_y* Thread.sleep(nSecond); 8TYoa:pZ } <m%ZDOMa catch(Exception e) m"
]VQnQ { oz l>Au e.printStackTrace (); K"Gea`I } a#&\65D } $v=(`= Ib"fHLWA^! //日志 Cjj(v7[E public static void log(String sMsg) A%~t[ H { "P$')uwE System.err.println(sMsg);
va!fJ } fH%C&xj'& gj82qy\: -'Z-8 public static void log(int sMsg) fBKN?]BdN { (Vt5@25JW System.err.println(sMsg); Q>TNzh } jV#1d8qm } WP PDvB /`7G 7pQ+ J!yK/*sO, /* M[L@ej **TestMethod.java 8]WcW/1r ! */ s 4n<k]d package NetFox; i1!Y{ 6df`]sc o}yA{<" public class TestMethod { |oR#j
` vhN6_XD .GvZv> public TestMethod() {T3wOi { ///xx/weblogic60b2_win.exe X @X`,/{X try{ 4hW:c0 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); tD]vx`0> //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); #_zj5B38E SiteFileFetch fileFetch = new SiteFileFetch(bean); jK2gc^"t fileFetch.start(); y 48zsm{ } /Ur]U
w catch(Exception e){e.printStackTrace ();} Rj-4K@a8#N ^O**ZndB/ Cf@N>N#t) } 3vEwui-5 %/R[cj8 /.(F\2+A public static void main(String[] args) FmQiy+.| { QG09=GQ new TestMethod(); $^W|@et{
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