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/* n0i&P9@B1 **SiteFileFetch.java =,]J"n8|v */ g4$%)0x% package NetFox; Zz&i0r import java.io.*; A0X0t import java.net.*; EhUy7b,1_ RK3/!C`
n*6s]iG
V public class SiteFileFetch extends Thread { `U1%d7[vY S&uL9)Glb I~qiF%?d SiteInfoBean siteInfoBean = null; //文件信息Bean 4K;j:ZJ"x long[] nStartPos; //开始位置 ry]7$MQyV long[] nEndPos; //结束位置 v#+w<gRq FileSplitterFetch[] fileSplitterFetch; //子线程对象 Y-c~"# long nFileLength; //文件长度 ?-84_i boolean bFirst = true; //是否第一次取文件 XP^6*}H.* boolean bStop = false; //停止标志 7~Ga>BK File tmpFile; //文件下载的临时信息 1=a}{)0h DataOutputStream output; //输出到文件的输出流 k"7eHSy, Q%xY/xH] //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) .-Lqo=o\ public SiteFileFetch(SiteInfoBean bean) throws IOException jgo@~,5R { @!'H'GvA siteInfoBean = bean; zB$6e!fc //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); D5m\u$~V tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); N]<gHGj} if(tmpFile.exists ()) GDB>!ukg { h*9o_ bFirst = false; .>'Z9.Xnk read_nPos(); 9h(hx7] } dJ^`9W else G0Eq}MyF { /a|NGh% nStartPos = new long[bean.getNSplitter()]; 7 f*_ nEndPos = new long[bean.getNSplitter()]; e`Yns$x } 8)!;[G| KRZV9AJ U.F65KaKF PK4UdT } NGY I%: qi2dTB iP%=Wo. public void run() )\;r
V'; { [E~TYk; //获得文件长度 E}=,"i //分割文件 8 vw]u_e //实例FileSplitterFetch Xt84 Evo //启动FileSplitterFetch线程 4"{wga~%/ //等待子线程返回 n_Y]iAoc` try{ (Qm;]?/ if(bFirst) UG_0Y8$ { k >CtWV5B nFileLength = getFileSize(); Z :+#3.4$3 if(nFileLength == -1) 8!SiTOzR? { __iyBaX System.err.println("File Length is not known!"); \^4$}@*] } (F YJ^o else if(nFileLength == -2) <Y2!c,"
{ fLoVcl System.err.println("File is not access!"); rfi`Bp } FO=1P7 else m_ m@>}ud { ;/T-rVND for(int i=0;i<nStartPos.length;i++) ,-Nk-g { <R>ZG"m { nStartPos = (long)(i*(nFileLength/nStartPos.length)); BD-=y } K:@=W1 for(int i=0;i<nEndPos.length-1;i++) I}IW!K { 2QRn
c" nEndPos = nStartPos[i+1]; |=T<WU1$ } q*nz4QTOE nEndPos[nEndPos.length-1] = nFileLength; W@dY:N} } UJ$:5*S=u } T6roz ,P@-DDJ *$C[![ //启动子线程 yWtr, fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; u(Sz$eV for(int i=0;i<nStartPos.length;i++) kG$8E { =+S3S{\CK fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .boizW1+ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), o~&!M_ED nStartPos,nEndPos,i); 3&fFIab9 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); /*^|5>-`i1 fileSplitterFetch.start(); Z;\"pP: } 6ya87H'e@ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <@2# VG siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); f;H#TSJ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;w(1Ydo nEndPos = " + nFileLength); D])YP0|} // fileSplitterFetch[nPos.length-1].start(); >? eTbtP Pm(:M:a _lv:"/3R //等待子线程结束 GPLt<K!<# //int count = 0; h)^A3;2F //是否结束while循环 DF|s,J`98 boolean breakWhile = false; zN)\2 cCGXB|9fYR S!W/K!wf
while(!bStop) X\2hKUkT { ko2j|*D6@~ write_nPos(); ]=VS~azZ5 Utility.sleep(500); .4FcZJvy breakWhile = true; XuoEAu8] |;m`874 0DVZRB for(int i=0;i<nStartPos.length;i++) &Z!K]OSY { H&Y{jqua if(!fileSplitterFetch.bDownOver) Y*cJ4hQ { >-5Gt breakWhile = false; SuH.lCF-g break; ?VP!1O=J } /
&D$kxz } \R\@t]>Y if(breakWhile) L2.`1Aag break; .`>l.gmi& q,+kPhHEgy (e3Gs+; //count++; TT ZxkK //if(count>4) F*JvpI[7n // siteStop(); (2bZ] } !aw#',r8m N^(lUba ~gWd63%8x System.err.println("文件下载结束!"); apD=>O } o?mXxL) catch(Exception e){e.printStackTrace ();} N46$EsO!h } vd7N&c9 G h[`q7B
Q _OU.JrqC //获得文件长度 ;i9<y8Dha public long getFileSize() Vm;Qw { 6$fnQcpJ int nFileLength = -1; +i@yZfT try{ 5Sjr6l3Vq8 URL url = new URL(siteInfoBean.getSSiteURL()); sC5uA
.?>9 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4!~
.6cp3 httpConnection.setRequestProperty("User-Agent","NetFox"); Qj<{oZp& YG 5Z8@kH 0SYf<$ int responseCode=httpConnection.getResponseCode(); _p J_V>l if(responseCode>=400) ca/o#9:N`: { =PFR{=F processErrorCode(responseCode); nOal7BNN return -2; //-2 represent access is error b?]ly( } yvooM'R "vOfAo]` 5u|=;Hz*) String sHeader; u@Cf*VPK 2@R8P~^W Zp(=[n5 for(int i=1;;i++) P A6KX5 { CI!Eq&D, //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); N`<4:v[P //Utility.log(in.readLine()); Vvyrty sHeader=httpConnection.getHeaderFieldKey(i); 33<fN:J]f if(sHeader!=null) `!omzE*bk5 { {nQ)4.e6 if(sHeader.equals("Content-Length")) S}w.#tyEn { 0i*'N ch#i nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); w~$c= JO# break; S@}B:}2 } rI<nUy P? } ?wLdW1&PpX else :Dk@?o@2;C break; Y0PGT5].@' } E +Ujpd } OS"{"P catch(IOException e){e.printStackTrace ();} ^s2m\Q( catch(Exception e){e.printStackTrace ();} _[TH@fO6: 'o/N}E!Pt P('t6MVlT Utility.log(nFileLength); 1J-Qh<Q C'-zh\a OHHNWg_5 return nFileLength; ," C[Qg( } y^X\^Kq
XJmFJafQD &gA6+b' //保存下载信息(文件指针位置) -OrY{^F private void write_nPos() 0\cnc^Z { 1c)\ try{ %Ui{=920 output = new DataOutputStream(new FileOutputStream(tmpFile)); %wt2F-u output.writeInt(nStartPos.length); i5
L:L for(int i=0;i<nStartPos.length;i++) Hz]4A S { *bCi2mbm@ // output.writeLong(nPos); a1g6}ym\ output.writeLong(fileSplitterFetch.nStartPos); VelB-vy& output.writeLong(fileSplitterFetch.nEndPos); jcEs10y } &\1'1`N1 output.close(); \-Iny=$ } 0~+NB-L} catch(IOException e){e.printStackTrace ();} iY
^{wi~? catch(Exception e){e.printStackTrace ();} 1m>^{u } |oe!P}u ?{
B[^ TsaW5ho<p //读取保存的下载信息(文件指针位置) g> ~cs_N@ private void read_nPos() (VYR!(17 { 83KfM!w try{ NqJ<!q)
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ptV4s=G2 int nCount = input.readInt(); _{6,.TN nStartPos = new long[nCount]; U@.u-)oX nEndPos = new long[nCount]; ;RWW+x8IB for(int i=0;i<nStartPos.length;i++) zBk_-'z { .vv5t nStartPos = input.readLong(); y)3~]h\a nEndPos = input.readLong(); 4? m/*VV } 5-8]N>/b! input.close(); `*e4m } L!;^#g catch(IOException e){e.printStackTrace ();} 6P;o 6s catch(Exception e){e.printStackTrace ();} -6rf( ER } 4 ,p#:! eM?rc55| L]k*QIn:h private void processErrorCode(int nErrorCode) N9i}p^F<_ { 5%<TF.;-J System.err.println("Error Code : " + nErrorCode); e7@li<3>d } %{R_^Y8t p`>AnfG 3<c*v/L{C\ //停止文件下载 [AXsnpa/C public void siteStop() 6xQ"bFm { sA/,+aM bStop = true; B/jrYT$;m for(int i=0;i<nStartPos.length;i++) Ln
~4mN^ fileSplitterFetch.splitterStop(); 0TTIaa$ DpA\r_D f%2%T'Q } hzaLx8L } 9;=q=O/ //负责部分文件的抓取 Ur^YG4( **FileSplitterFetch.java bt;lq!g */ fd4;mc1T package NetFox; /@&(P#h `$J'UXtGc n}19?K]g import java.io.*; I+0c8T(: import java.net.*; mT96]V\ eh$G.-2N B ,V(LTE public class FileSplitterFetch extends Thread { +.w[6 8)N0S% B c#=&!FRe String sURL; //File URL '.pgXsC:=? long nStartPos; //File Snippet Start Position D899gGe long nEndPos; //File Snippet End Position KzV.+f int nThreadID; //Thread's ID FyCBNtCv boolean bDownOver = false; //Downing is over e\`wlaP, boolean bStop = false; //Stop identical [ L
FileAccessI fileAccessI = null; //File Access interface p`
$fTgm Iq+2mQi*/k I?^aCnU public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException StEQ
-k { !?jK1{E3 this.sURL = sURL; 21U&Ww this.nStartPos = nStart; >yX/+p_ this.nEndPos = nEnd; -:MmSeG7gO nThreadID = id; $u:<x fileAccessI = new FileAccessI(sName,nStartPos);//定位 $nj\\,(g } jQ6Xr&}
>wA+[81[ UL&} s_ public void run() -(!uC+BZX {
4bnt=5] while(nStartPos < nEndPos && !bStop) *t^eNUA { @9aGz6k+ h{I`7X Z%#^xCz;w> try{ |7y6
pz URL url = new URL(sURL); L${m/@9 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :WVSJ,. ! httpConnection.setRequestProperty("User-Agent","NetFox"); Uls+n@\! String sProperty = "bytes="+nStartPos+"-"; DE%fF,Hk3 httpConnection.setRequestProperty("RANGE",sProperty); VrVDm*AGQ Utility.log(sProperty); w^ 3|(F ?b56AE 6.[)`iF+# InputStream input = httpConnection.getInputStream(); ?H`j>]%& //logResponseHead(httpConnection); =LOk13l\" vHS2q
> guU=NQZ byte[] b = new byte[1024]; +s ULo int nRead; $%Z3;:<Uf- while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) *#zS^b n { m~;B:LN< nStartPos += fileAccessI.write(b,0,nRead); CI^[I\$& //if(nThreadID == 1) }w#F6 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); h(nj,X+ } /HZv RpYcD n&$/Q$d& Utility.log("Thread " + nThreadID + " is over!"); Bhe{L?}0 bDownOver = true; fH[Wkif //nPos = fileAccessI.write (b,0,nRead); )9B:Y;>) } FNC[59 catch(Exception e){e.printStackTrace ();} #ra*f~G } +Juh:1H } 6|5H=*)DH `^x9(i/NE H'Nq#K //打印回应的头信息 -G-3q6A public void logResponseHead(HttpURLConnection con) BKay*!'PX { ~ltg for(int i=1;;i++) `]jqQr97 { o5SQ1;`
String header=con.getHeaderFieldKey(i); myIe_k,F if(header!=null) xz8G}Ku //responseHeaders.put(header,httpConnection.getHeaderField(header)); FIS "Z( Utility.log(header+" : "+con.getHeaderField(header)); l[oe*aYN7 else JGis" e break; s9i|mVtm8 } >g]ON9CGH } >La><.z~ |4fF T ` O[FZq47 public void splitterStop() >I^9:Q { b# u8\H bStop = true; >?I/;R.- } 5$%XvM doR4nRl9 -uj3'g(;w } :RiF3h( FshC )[w, A?A9`w /* <^c3} **FileAccess.java lL0M^Nv *//文件访问(定位,写) m(_9<bc> package NetFox; Us=eq "eu import java.io.*; `eR 7H>I O m9jtWk ($8t%jVWJJ public class FileAccessI implements Serializable{ {[W(a<%bXm ]Lm'RlV //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 C6]OAUXy:F RandomAccessFile oSavedFile; $gvr
-~ long nPos; ?:uNN VD[pZ2;4 "VTF}#Uo public FileAccessI() throws IOException )R &,'`\ { :G=FiC this("",0); t7*#[x)a } ^~1<f1( Ee)xnY%( 0` 5e public FileAccessI(String sName,long nPos) throws IOException WbcS: !0 { "r$/
oSavedFile = new RandomAccessFile(sName,"rw"); cbYK5fj"T this.nPos = nPos; 5JSrrpGr oSavedFile.seek(nPos); >bIF>9T } i=#F)AD^5# dYF=c 1m)M;^_ public synchronized int write(byte[] b,int nStart,int nLen) [>Fm[5x { _ck[&Q int n = -1; xaW{I7FfG try{ i=rH7k oSavedFile.write(b,nStart,nLen); .<YcSG n = nLen; 8@eOTzm } L'E^c,-x~ catch(IOException e) fYX<d%?7 { eV2mMSY e.printStackTrace (); =w%O a< } ej^3YNh& efOjTA% k\aK?(.RC7 return n; Ia4)uV8 } #fDs[ *C2R`gpBI /X#z*GX } \TbVS8e^ )(TAT< G;1?<3 /* uQ3[Jz`y **SiteInfoBean.java orfp>B) 0 */ H"Dn]$Q\Z package NetFox; PJ\0JR7a {_>em*V b {vVTv SC public class SiteInfoBean { :]II-$/8 Ed-M7#wY Vw~\H Gs/~ private String sSiteURL; //Site's URL @PSLs*
private String sFilePath; //Saved File's Path $kPHxD!" private String sFileName; //Saved File's Name ^3~e/P KM private int nSplitter; //Count of Splited Downloading File ^?GmrHC) y7lWeBnC [TTSA2 public SiteInfoBean() a`c:`v2o {//nSplitter的缺省值为5 $B
.Qc!m //default value of nSplitter is 5 |J>WC}g@n this("","","",5); s V
}+eU } =RKSag& f.xA_Y> VaLs`q&3> public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) E6A/SVp { ;['a sSiteURL= sURL; MesRa( sFilePath = sPath; o\=n4;S sFileName = sName; HdX2YPYn; this.nSplitter = nSpiltter; 8%:]W^ ))T>jh .\:J~( } $xgBKD \'v(Xp6 Z-X?JA\& public String getSSiteURL() {/8Q)2*>0 { {eT.SO return sSiteURL; I 3$dVls} } TO#Pz.)>B6 .~D>5 JnEk e2)autBe public void setSSiteURL(String value) I4c!m_sr { <L0#O(L sSiteURL = value; r4XH = } G|
m4m. 5iX!
lAFJ ~)]} 91p public String getSFilePath() 1vevEa$ { ULqoCd%bK return sFilePath; =xN= # } {2KFD\i\
%D=]ZV]( Dr#c)P~Wd public void setSFilePath(String value) L}k/9F.5 { K_&MoyJJ9f sFilePath = value; 9S7A!AKE } 3Ofc\ qUJ
aeQ p( LZ)7/ public String getSFileName() aX6}6zubr { Y]g?2N=E return sFileName; G4-z3e,crr } ,xi({{L* AC- )BM'; \XzM^K3 public void setSFileName(String value) ~$,qgf { ,<Kx{+ [h sFileName = value; j<yiNHC } P 7D!6q F7}-! _e<o7Y@_ public int getNSplitter() T6BFX0$ { A#y@`}]!' return nSplitter; r ,(Mu } 8p^B hd {]N3f[w L,_.$1d public void setNSplitter(int nCount) ^A_;#vK { {8RFK4! V@ nSplitter = nCount; B4H!5b } g_.^O$} } m_NCx]#e
8?FueAM'
GZ #aj| /* ]$iqa"{ **Utility.java 3lxc4@Zmd */ L"+$Wc[| package NetFox; [:EvTY ]ZoPQUS? $)~ public class Utility { ef"?|sn I/J7rkf sy5 Fn~\R public Utility() ?}P5p^6 { 3251Vq % 1R%1h9I4' ro~+j}* } .?W5{U @z`@f"l //线程睡眠 JK_OZ public static void sleep(int nSecond) ))h6~1` { dFXc/VH') try{ $7Jo8^RE Thread.sleep(nSecond); }:Z9Vc ZP` } N_C;&hJN$w catch(Exception e) 9)dfL?x8V{ { $%k1fa C e.printStackTrace (); $4=f+ "z } AONDx3[
} 2'0K WYM uKr1Z2 //日志 |AZW9 public static void log(String sMsg) mh/n.*E7 { 4Ft1@ System.err.println(sMsg); Ukz;0q } u'~;Y.@i' 5`+5{p ~%k ?L4% public static void log(int sMsg) ?uL eFD { uzr\oj+> System.err.println(sMsg); k=ytuV\ } o2H1N~e#c } G@ \Pi#1 32)tJ|m J4$!
68 /* .^(/n9|o- **TestMethod.java +C]&2zc. */ j{++6<tr package NetFox; ?X$,fQ#F| giY80!GX }ut]\]b public class TestMethod { <U Zd;e@ 7L5P%zLtB 8T[
6J{|C public TestMethod() YNdrWBf) { ///xx/weblogic60b2_win.exe uzOYVN$t try{ Aj>[z8!, SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); qQ[b VD\* //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 3Hi+Z}8 SiteFileFetch fileFetch = new SiteFileFetch(bean); ],etZ%z& fileFetch.start(); >`RRP}u=u } yBpk$ catch(Exception e){e.printStackTrace ();} eU+ {*YJg 4vnUN I,@r5tKo } F0Jx( ChrY"
OTWkUB{ public static void main(String[] args) KxGX\
{ {2d_"lHBt new TestMethod(); $RX'(/ } &n2e } "Y:/=
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