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/* QEc4l[^{.B **SiteFileFetch.java QeG3X+ */ ,d$D0w package NetFox; EfGy^`,'G import java.io.*; \U.js- import java.net.*; OzAxnd\.N 5N:IH@ $Ahe Vps@@ public class SiteFileFetch extends Thread { "43F.!P CRPE:7,D 9i+`,r
SiteInfoBean siteInfoBean = null; //文件信息Bean FPukV^ long[] nStartPos; //开始位置 kt7x}F(?< long[] nEndPos; //结束位置 EjP9/VG@= FileSplitterFetch[] fileSplitterFetch; //子线程对象 ZhY03>X long nFileLength; //文件长度 |H>;a@2d boolean bFirst = true; //是否第一次取文件 {fS~G2@1 boolean bStop = false; //停止标志 |X;|=. File tmpFile; //文件下载的临时信息 Y |9 DataOutputStream output; //输出到文件的输出流 0?O$->t @IV,sze //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) dK>sHUu public SiteFileFetch(SiteInfoBean bean) throws IOException LyRW\\z2 { O9_SVXWVw siteInfoBean = bean; ~9n30j%]s //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Ih)4.lLcKn tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); .:~E.b if(tmpFile.exists ()) 0HN%3AG] { %{ory5 bFirst = false; 8T88 read_nPos(); }mpFo2 } BRXDE7vw else )
(0=w4 { moL3GV%]Gq nStartPos = new long[bean.getNSplitter()]; AejM\#> nEndPos = new long[bean.getNSplitter()]; 5:(/k\9+yv } "<&) G{ 6o4Y]C2W{1 JJy.)-R yf/i) } U<<XeSp vH/RP i@mS8%|l public void run() i(>
WeC+ { -`UOqjb]3 //获得文件长度 2WC$r8E //分割文件 17-B'Gl!<% //实例FileSplitterFetch ;
*\xdg{d //启动FileSplitterFetch线程 2d&]V]:R* //等待子线程返回 ox5WboL try{ gFl@A} if(bFirst) &z@}9U*6b { iw%""q(` nFileLength = getFileSize(); U7HfDDh if(nFileLength == -1) +QP(ATdM { Y=t?"E System.err.println("File Length is not known!"); IZs&7 } 1)!2D?w else if(nFileLength == -2) ik1asj1 { k~)@D| ? System.err.println("File is not access!"); jXPbj. } h
s_x
@6 else zI4d|P { 2S-f5&o for(int i=0;i<nStartPos.length;i++) #_WkV { bjAI7B8As nStartPos = (long)(i*(nFileLength/nStartPos.length)); -F_cBu81V } `\GRY @cg for(int i=0;i<nEndPos.length-1;i++) 3n~O&{ { qiH)J-
~GZ nEndPos = nStartPos[i+1]; m|3Q' } 88l1g,`** nEndPos[nEndPos.length-1] = nFileLength; u~PZK.Uf0 } KW$.Yy } d:"7Tw2v+ yhrjML2K @0(%ayi2Y //启动子线程 y?U@F/^}N fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; FC
WF$'cO for(int i=0;i<nStartPos.length;i++) F}=_"IkZ { udmLHc fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L7R!, siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 'KDt%?24 nStartPos,nEndPos,i); >Y(JC#M; Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6|IJwP^Q_ fileSplitterFetch.start(); }B_?7+ } 70 Ph^e) // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "Mz#1Laby` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); IwRP,MQ~ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", rgDl%X2B nEndPos = " + nFileLength); A1r%cs // fileSplitterFetch[nPos.length-1].start(); %J Jp/I K+"3He ;A4j_8\[ //等待子线程结束 N3N~z1x0h //int count = 0; gu:vf/ //是否结束while循环 Mdq|:^px boolean breakWhile = false; Z_fwvcZ?05 UA4c4~$S @ qi|}($ while(!bStop) w 62m}5eA { [XttT write_nPos(); 8!YQ9T [ Utility.sleep(500); 'n=bQ"bQu breakWhile = true; -}PE(c1%?q JY@bD: MV2$0 for(int i=0;i<nStartPos.length;i++) \Zh&[D!2 { KDP"z if(!fileSplitterFetch.bDownOver) N;,zPW a
{ WP?]"H breakWhile = false;
"a9j2+9 break; @,7r<6E } EV-sEl8ki } _>BYUPY if(breakWhile) HDTA`h?t; break; OQ4Pk/-' nCQ".G `\|tXl. //count++; #-PMREgO //if(count>4) u})*6 l. // siteStop(); 7r^Cs#b+I } (>E/C^Tc% IaQm)"Z Na@;F{ System.err.println("文件下载结束!"); \o=9WKc } *JfGGI_E catch(Exception e){e.printStackTrace ();}
J9OL>!J } j Neb*dPoK M$Bb,s QmSMDWkh //获得文件长度 'n>44_7 L public long getFileSize() l0;u$ { H-nhq-fut int nFileLength = -1; S(nQ?;9, try{ 63J3NwFt URL url = new URL(siteInfoBean.getSSiteURL()); t- TUP>_ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); wVFa51a)yy httpConnection.setRequestProperty("User-Agent","NetFox"); IZm6.F `"PHhCG+z L)&^Pu int responseCode=httpConnection.getResponseCode(); B9[vv;lzu if(responseCode>=400) M$.bC0}T { S>r}3,]S processErrorCode(responseCode); YtKT3u:x return -2; //-2 represent access is error ]f?r@U'AS| } ;Z`a[\i': :3XvHL0rx _'17C/ String sHeader; ^*4#ZvpG2 6"Lyv Q)BSngW+ for(int i=1;;i++) .ahY 1CO { >N 2kWSa //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); QH4m7M@ni //Utility.log(in.readLine()); n#Dy
YVb sHeader=httpConnection.getHeaderFieldKey(i); J[r_ag if(sHeader!=null) l)o!&]2 { GD)paTwO< if(sHeader.equals("Content-Length")) D
"5|\ { H\n6t-l nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); DTuco9yr[ break; H ?9Bo! } ("ix!\1K@ } gK;dfrU.8Y else X Db% - break; kTfRm^ } n0gjcDHQ } H^5,]; catch(IOException e){e.printStackTrace ();} ULu@" catch(Exception e){e.printStackTrace ();} k{lo' 5Za<]qxr b;d7mh4 Utility.log(nFileLength); 5%(whSKZF 2bLc57j{`9 [%R?^*] return nFileLength; 1%vE 7a>{ } /m;Bwu A^+k A)8 -T1R}ew*t //保存下载信息(文件指针位置) ~PQR_?1 private void write_nPos() h lc!}{$%8 { c^'bf_~-W try{ ^ H2TSaJ; output = new DataOutputStream(new FileOutputStream(tmpFile)); X]2Ib'( output.writeInt(nStartPos.length); ,1B4FAR& for(int i=0;i<nStartPos.length;i++) S
LeA,T { Q?LzL(OioN // output.writeLong(nPos); 7VZ ^J`3 output.writeLong(fileSplitterFetch.nStartPos); {+cx} ` output.writeLong(fileSplitterFetch.nEndPos); U';)]vB$ } ^Ss<< output.close(); PPrvVGP
} f. >[ J catch(IOException e){e.printStackTrace ();} T"3LO[j+ catch(Exception e){e.printStackTrace ();} bv(+$YR } E&z^E2 YU0pWM Iurz?dt4w //读取保存的下载信息(文件指针位置) *oIIcE4g7 private void read_nPos() W^Fkjqpv { t4d/%b~{:U try{ YGM7? o DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); p=eSJ* int nCount = input.readInt(); roAHkI nStartPos = new long[nCount]; 2B6u)
95 nEndPos = new long[nCount]; e@vZg8Ie for(int i=0;i<nStartPos.length;i++) g#l!b%$ { uEr.LCAS nStartPos = input.readLong(); R\n@q_!`X nEndPos = input.readLong(); #P z'-lo } CE input.close(); `|"o\Bg< }
:jkPV%!~ catch(IOException e){e.printStackTrace ();} fj(WHL catch(Exception e){e.printStackTrace ();} >k@{NP2b } C"`\[F`.k 7^Us q[vO
mes private void processErrorCode(int nErrorCode) G@~e:v) { FMn|cO.vEP System.err.println("Error Code : " + nErrorCode); 0QquxYYw, } hUp3$4w rVsCJuxI i@WO>+iB //停止文件下载 2uY:p=DxG9 public void siteStop() KYKF$@
<G { ]v@ng8 bStop = true; qkc,93B3 for(int i=0;i<nStartPos.length;i++) I
Gb'ii=A fileSplitterFetch.splitterStop(); QjJlVlp ho~WD'i H3d|eO4+W } K)`R?CZ:s } x~8R.Sg //负责部分文件的抓取 <?8cVLW}O **FileSplitterFetch.java V_v+i c^ */ >dF #1 package NetFox; { i3x\| <b\.d^=B tVX|e2Y import java.io.*; n31nORx50 import java.net.*; X%iqve"{nB wT;;B=u}G R*LPwJuv public class FileSplitterFetch extends Thread { Ebi~gGo {/?{UbU em^2\*sxpA String sURL; //File URL HP 3%CB long nStartPos; //File Snippet Start Position <>-gQ9 long nEndPos; //File Snippet End Position ]>sMu]biH int nThreadID; //Thread's ID .g}Y!
l boolean bDownOver = false; //Downing is over kIt1k w boolean bStop = false; //Stop identical 6~s{HI! FileAccessI fileAccessI = null; //File Access interface c(?O E'
"Z MfLus40;n l{ fL~O public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException EOqV5$+ {
ji ,`? this.sURL = sURL; M5`m5qc3 this.nStartPos = nStart; /n,a0U/ this.nEndPos = nEnd; *x2u nThreadID = id; 3+U2oI:I fileAccessI = new FileAccessI(sName,nStartPos);//定位 }gX4dv
B } 5/m*Lc+r FEa%wS{ j}jU.\*v< public void run() J[K>)@I/ { u6\W"LW while(nStartPos < nEndPos && !bStop) \vj xCkg{ { ;lTgihW- J(XK%e[8 nu|odP try{ zCwb>v URL url = new URL(sURL); F>@z&a}( HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _J3\e%ys httpConnection.setRequestProperty("User-Agent","NetFox"); W`wT0kP?*] String sProperty = "bytes="+nStartPos+"-"; `wLmGv+V httpConnection.setRequestProperty("RANGE",sProperty); u8y('\( Utility.log(sProperty); 2@ZuH^qhk #?\|)y4i W$" >\A0% InputStream input = httpConnection.getInputStream(); )@.ODW;` //logResponseHead(httpConnection); @
eP[*Q XT==N-5, e=u}J%| byte[] b = new byte[1024]; A#79$[>w int nRead; N *n?hN while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) aMJ9U)wnK { bV@5B#] 2R nStartPos += fileAccessI.write(b,0,nRead); 2fUz}w ( //if(nThreadID == 1) 3URrK[%x` // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6XeqK*r* } }T=\hM ,}Ic($To (jE[W: Utility.log("Thread " + nThreadID + " is over!"); \ $9n
` bDownOver = true; hJ V* //nPos = fileAccessI.write (b,0,nRead); kRz qgVr% } P'Jb')m catch(Exception e){e.printStackTrace ();} .7#04_aP } UZc{ Av } 0j'k%R[l C9T-4o1 gD6BPW~0 //打印回应的头信息 Rmh,P > public void logResponseHead(HttpURLConnection con) <,T#* fg { @eDL j} for(int i=1;;i++) )#cGePA { >LR+dShG String header=con.getHeaderFieldKey(i); BQ~&gy{ if(header!=null) v{U1B //responseHeaders.put(header,httpConnection.getHeaderField(header)); w{ x=e Utility.log(header+" : "+con.getHeaderField(header)); QV%eTA else zhwajc break; j7Lw(AJ } lGX_5R } Zxv{qbF FEg&EYI
pM@0>DVi public void splitterStop() :3*0o3C/ { Bk1gE(( bStop = true; ';x5 $5k' } ]p~,C*UH0 &T-udgR9 \6Hu&WHy } \RTX fe-` W;wu2 ' C
F< /* d4-cZw}+ **FileAccess.java .aR$ou,7 *//文件访问(定位,写) /E6Tt package NetFox; "{(4 import java.io.*; JE+{Vx} gMZ?MG ~7=w,+ public class FileAccessI implements Serializable{ /F @a@m| Ucok&)7- //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 1hgmlY` RandomAccessFile oSavedFile; W?auY_+P long nPos; -zLxT (z<&PP #bLeK$ public FileAccessI() throws IOException [kq+a]q { uH!;4@uI this("",0); "7a;Apq* } rB%acTCz=[ !ly]{DTmm LaiUf_W #X public FileAccessI(String sName,long nPos) throws IOException }vdhk0 { =u`^QE oSavedFile = new RandomAccessFile(sName,"rw"); 7":0CU%% this.nPos = nPos; 7J2i /m oSavedFile.seek(nPos); c=HL
6v< } f_Q_qckB%x yq>3IS4O MA:8gD public synchronized int write(byte[] b,int nStart,int nLen) E>?T<!r~j { N;\by<snN int n = -1; #r)c@?T@j try{ R|AGN*. oSavedFile.write(b,nStart,nLen); 4E& 3{hnp n = nLen; PDssEb7 } H\<C@OkJS} catch(IOException e) nZM|8 { yf7p0;$? e.printStackTrace (); nPUq+cXy]C } {*%'vVv+ 0$l D SuW_[6] return n; vrIM!~*W } Hv1d4U"qM %k3a34P@ qN_jsJ } T=2 91)@ EkqsE$52 2$? )VXtw /* =lG5Kc{B **SiteInfoBean.java 8f | */ 8ESBui3; package NetFox; pOip$Z [0}^w[ ,saf"Ed= public class SiteInfoBean { >c7fg^@ C@L:m1fz ?H3xE=<X private String sSiteURL; //Site's URL _D(F[p| private String sFilePath; //Saved File's Path iffRGnN^e private String sFileName; //Saved File's Name "ND 7,rQ private int nSplitter; //Count of Splited Downloading File
p_QL{gn DY{JA
*N @&2bLJJ+ public SiteInfoBean() dYJW`Q;j.| {//nSplitter的缺省值为5 eW+z@\d9Gz //default value of nSplitter is 5 ZuF-$]oL& this("","","",5); YXa^jFp } gKS0!U jfHVXu^M hC8'6h public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) =2{ ^qvP { D{/GjFO sSiteURL= sURL; nQvv'%v0 sFilePath = sPath; u*&wMR>Crf sFileName = sName; 7{XI^I:n this.nSplitter = nSpiltter; z@biX nlK"2/W -`B|$ W } )fR'1_ o% !a %Ow,.+m public String getSSiteURL() 1NT@}j~/ { z/N~HSh!d return sSiteURL; 5o2;26c } /'p(X~X:l 'LR5s[$j }dE0WJcO public void setSSiteURL(String value) m^Btr { UMw1&"0: sSiteURL = value; ?
S>"yAoe } %Sfew/"R0 -mG3#88* <D
pi M` public String getSFilePath() qV.*sdS> { +X0?bVT return sFilePath; Jpws1~ } sL
XQ)Ce 4jj@"*^a k|nv[xY0 public void setSFilePath(String value)
grnlJ= { do%6P^qA sFilePath = value; 'cT R<LVo } $v+Q~\' L*1C2EL/q `(EY/EsY public String getSFileName() =\?KC)F*e { BD9W-mF return sFileName; {(AYs*5 } PygaW&9Z|d Lu6!W 5R/!e`(m public void setSFileName(String value) k 0z2)3L { ">lu8F sFileName = value; ;2-,Xzz8 } Q'&oSPXSDd p0UR5A>p Y:oL public int getNSplitter() CbA! { |28z4 . return nSplitter; Uo<d]4p $ } gEMxK2MNXj u)MdFz B{lBUv(B public void setNSplitter(int nCount) \SS1-UbL { <|~X,g;f nSplitter = nCount; <l(LQmM; } )}1J.>5 } r%JJ5Al.S 8/x@|rjW #7+oM8b /* 34Q l7LQp[ **Utility.java KQj5o>} 6 */ *pCT34'-- package NetFox; |[;9$Vn +HQX]t:Y
lO9ML-8C1 public class Utility { B)O{+avu (hS
j4Cp Tf)qd\ public Utility() (\>3FwFHW| { (V)nHF*<> /\hybx' r*fZS$e } kqYWa`eE BYFvf(> //线程睡眠 eYMp@Cx public static void sleep(int nSecond) 0
Ji>drn { !v;N@C3C try{ O{uc
h Thread.sleep(nSecond); !jGe_xB}~ } 6Lr G+p` catch(Exception e) 1WRQjT=o { a.#`> e.printStackTrace (); UR44
iA] } Ds?
@LE| } {M96jjiInf /qa{*"2Qo //日志 YD_hg#=n public static void log(String sMsg) lO! Yl:;m% { ]*|+06 System.err.println(sMsg); (B{`In8G>y } s4/4o_[W :a
@_GIC >
L_kSC? public static void log(int sMsg) ;fw}<M!6 { lk]q\yO_% System.err.println(sMsg); eW,{E)x: } HjAhz } O%L]*vIr VAX@'iZr w{l}(:xPp /* |*ss`W7F,2 **TestMethod.java vg[A/$gLM */ Zvz Zs package NetFox; Jw3VWc
]] UKV0xl
YEH /22 public class TestMethod { Z:9xf:g* ],#Xa.r Y S/x; public TestMethod() ^)oBa=jL4 { ///xx/weblogic60b2_win.exe viB'ul7o try{ A?i
~*#wE SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); .}!"J`{W //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Z"j #kaXA SiteFileFetch fileFetch = new SiteFileFetch(bean); p5`iq~e9 fileFetch.start(); LK\L}<;1V } yuIy?K catch(Exception e){e.printStackTrace ();} ,Ta k', B;x5os ybNo`:8A; } >G7dw1; E/[>#%@i q@k/"ee*? public static void main(String[] args) KUJCkwQ { mq
0 d ea new TestMethod(); K!W7a~
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