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/* &KfRZ`9H **SiteFileFetch.java PV?XpT */ %N\pfZ2\ package NetFox; !"u) `I2 import java.io.*; Nrl&"IK|J import java.net.*; <v<TsEI nQ\ +Za== lQs|B ' public class SiteFileFetch extends Thread { bP;cDQ(g ZN)a}\] %G9:M;|' SiteInfoBean siteInfoBean = null; //文件信息Bean =>ooB/ long[] nStartPos; //开始位置 vF, !8e'v long[] nEndPos; //结束位置 ?#@JH FileSplitterFetch[] fileSplitterFetch; //子线程对象 D:Zpls. long nFileLength; //文件长度 0mB]*<x8 boolean bFirst = true; //是否第一次取文件 *wW/nr=\; boolean bStop = false; //停止标志 &gc8"B@V File tmpFile; //文件下载的临时信息 l6b3i
v, DataOutputStream output; //输出到文件的输出流 VFN\
Ryd !ndc
<], //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) @";z?xj public SiteFileFetch(SiteInfoBean bean) throws IOException uHdrHP { 4;;F(yk8 siteInfoBean = bean; ybBLBJb //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); XcJ'w tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }Sa2s&[< if(tmpFile.exists ()) #pJ^w>YNy { J-g#zs bFirst = false; EUdu"'=4a read_nPos(); HjTK/x'_'L } /kL X
f_ else n8"S;:Zm { @F_#d)+%> nStartPos = new long[bean.getNSplitter()]; RYMOLX84 nEndPos = new long[bean.getNSplitter()]; J-lQPMI, } ARYqX\-e 5q[0;`J q_Td!?2? 6T 2jVNg } Fy-+? ~ 6,'v
/A- ehO@3%z30c public void run() O~F/pJN` { xw-x<7 //获得文件长度 z^
+CD- //分割文件 u/FnA-L4 //实例FileSplitterFetch 4VE7%.z+ //启动FileSplitterFetch线程 >LxYP7M //等待子线程返回 3=xb%Upw try{ }'{39vc . if(bFirst) }zVPdBRfm { ADRjCk}I nFileLength = getFileSize(); M-KjRl if(nFileLength == -1) 8;7Y}c {
v#0R System.err.println("File Length is not known!"); q#B^yk|Y } >'eOzMBn else if(nFileLength == -2) 89KX.d { P[PBoRd2 System.err.println("File is not access!"); >`DbT:/< } ]X+3" else fc lmxTy { x#"|Z&Dw0 for(int i=0;i<nStartPos.length;i++) GDC`\cy { WAiEINQ^) nStartPos = (long)(i*(nFileLength/nStartPos.length)); {Q8DPkW } .E|Hk,c9 for(int i=0;i<nEndPos.length-1;i++) l)E
\mo
8 { bL5z%bV nEndPos = nStartPos[i+1]; xKKL4ws } D3yG@lIP3 nEndPos[nEndPos.length-1] = nFileLength; {O*<1v9< } *zX*k7LnV } D"fE )@Q@Y '>>
IMF %7BVJJp2 //启动子线程 e!yUA!x`u fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; v=?U{{xQ for(int i=0;i<nStartPos.length;i++) MjC;)z { #5O'XH5_ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V%&t'H{ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), -CW&!oW nStartPos,nEndPos,i); ^z3-$98=A Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); /E(H`;DG fileSplitterFetch.start(); 2XrPgq' } "Iu[)O% // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $DC*&hqpt siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); B M{GSX // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", "/hM& nEndPos = " + nFileLength); x Yr-,$/ // fileSplitterFetch[nPos.length-1].start(); {e[S?1t=l J)
v~ _#9:cH* //等待子线程结束 jJl6H~
"q //int count = 0; 9BB<.
p //是否结束while循环 hi,! boolean breakWhile = false; Y-&r_s_~ ,s0 E]]( %[ 4/UD=7 while(!bStop) i](,s. { Ojp)OeF\ write_nPos(); DR/qe0D Utility.sleep(500); %a+X\\v2 breakWhile = true; G5Y5_r6Gu o7VNw8Bp Ea1{9>S for(int i=0;i<nStartPos.length;i++) "+s#!Fh * { :7p0JGd if(!fileSplitterFetch.bDownOver) TCp!4-~, { 49}yw3- breakWhile = false; "s2?cQv{# break; c"t1E-Nsk } 4vTO # F } k|-`d if(breakWhile) PaV [{CD break; &oiX/UaY @Fqh]1t rq9{m( //count++; nL@
"FZ`( //if(count>4) hC<X\yxe // siteStop(); 'P}"ZHW } FCQoz"M W^0F(9~!( m_~
p G System.err.println("文件下载结束!"); qAm$yfYs` } l?(nkg["nY catch(Exception e){e.printStackTrace ();} W5(t+$L. } y4)M,+O5 X`]-)(UX G;V@oT //获得文件长度 BDxrS q,H public long getFileSize() 2F^
%d9`
{ lO8.Q"mxo int nFileLength = -1; F1R91V| try{ 5/DTE:M< URL url = new URL(siteInfoBean.getSSiteURL()); k);z}`7 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Dqe)8 r httpConnection.setRequestProperty("User-Agent","NetFox"); ?LgR8/Io@5 Gk,{{:M:5 MLY19 ;e int responseCode=httpConnection.getResponseCode(); M$-4.+G if(responseCode>=400) hxx,E>k { _`/0/69 processErrorCode(responseCode); O+`^]D7 return -2; //-2 represent access is error #`:s:bwM: } 2ko7t9y& tu77Sb +-'qI_xo String sHeader; E xKH%I nFW^^v< vX)6N#D! for(int i=1;;i++) MjE.pb { EG&^;uU //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); n=r}jRH1 //Utility.log(in.readLine()); l7aGo1TcIh sHeader=httpConnection.getHeaderFieldKey(i); Xn"n5=M if(sHeader!=null) m0 ]LY-t { swG^L$r` if(sHeader.equals("Content-Length")) 4DEsB)%X { v6oPAqj,r nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); riZFcVsB break; G6JyAC9j } VbM5]UT/ } /}2
bsiJT else 0NfO|l7P break; zJI/j
_~W } ,.]e~O4R } Y:^ =jV7 catch(IOException e){e.printStackTrace ();} !W^2?pqN catch(Exception e){e.printStackTrace ();} X~0l1 @! kR^7Z7+#* Y@KZ:0< Utility.log(nFileLength); nX5*pTfjL3 pW:h\}%`n jCW>=1:JGY return nFileLength; (&PamsV*8 } 'nP'MA9b;a PZNo.0M70 vbqI$F[s //保存下载信息(文件指针位置) w?C_LP private void write_nPos() )g:UH
Ns { [2 2IF try{ MP[v 9m@ output = new DataOutputStream(new FileOutputStream(tmpFile)); \*LMc69
output.writeInt(nStartPos.length); n8[sR;r5f for(int i=0;i<nStartPos.length;i++) x@DXW( { sl6p/\_w // output.writeLong(nPos); {,IWjt &> output.writeLong(fileSplitterFetch.nStartPos); ?MKf=!w output.writeLong(fileSplitterFetch.nEndPos); P)1@HDN== } \q3H#1A output.close();
tyP-J4J } f*XF"@ZQV catch(IOException e){e.printStackTrace ();} \2_>$:UoV catch(Exception e){e.printStackTrace ();} edGV[=]F } Ez?vJDd :FG}k Y Q)#<T]~= //读取保存的下载信息(文件指针位置) oCy52Bm.! private void read_nPos() HZ8
j[kO { UgJlXB|a%2 try{ <kLY1EILM DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 8S]Mf*~S' int nCount = input.readInt(); 6;n^/3*# nStartPos = new long[nCount]; L!S-f4^5 nEndPos = new long[nCount]; yel>-=Vn for(int i=0;i<nStartPos.length;i++) d/Py, { ,EZ&n[%Ko nStartPos = input.readLong(); %T'?7^\> nEndPos = input.readLong(); 4Xz6JJ1U[H } 1"/V?ArfL input.close(); + A0@#:B } qu[w_1%S catch(IOException e){e.printStackTrace ();} !Q.c8GRUQ catch(Exception e){e.printStackTrace ();} V.y+u7<3} }
W3<O+ S& KNY<"b 0p2 0Rt private void processErrorCode(int nErrorCode) zNE!m:s { yqejd_cd System.err.println("Error Code : " + nErrorCode); 'Dat.@j } =7e8N&-nv ^]U2Jd !-N!80 //停止文件下载 "3\RJ?eW:S public void siteStop() 7e8hnTzl8< { K"}Dbr bStop = true; jQb=N%5s for(int i=0;i<nStartPos.length;i++) cYbO)?mC_ fileSplitterFetch.splitterStop(); +D
h=D* I]k'0LG*^ <ht>> } :[ITjkhde0 } rA1
gH6D //负责部分文件的抓取 8OBvC\% **FileSplitterFetch.java MO _9Yi */ 8z/ ^Ql package NetFox; d\)v62P 2Cr+Z(f W!X#:UM) import java.io.*; cU{LyZp import java.net.*; r#Pd@SV 8U;!1!+
7) {;p/V\ public class FileSplitterFetch extends Thread { z9D2,N. (XW#,=rYk Fn[~5/ String sURL; //File URL qb" ! long nStartPos; //File Snippet Start Position `Mjm/9+18 long nEndPos; //File Snippet End Position Rp@u.C< int nThreadID; //Thread's ID htF&VeIte boolean bDownOver = false; //Downing is over (vI7qD_ boolean bStop = false; //Stop identical Ce0I8B2y FileAccessI fileAccessI = null; //File Access interface wz,
\zh wR;l"*j N$y4>g public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException EXBfzK)a { vaQ,l6z
.h this.sURL = sURL; M}nalr+# this.nStartPos = nStart; s]I],>}RU this.nEndPos = nEnd; F;b|A`M nThreadID = id; mdZELRu fileAccessI = new FileAccessI(sName,nStartPos);//定位 qnA:[H;F } B"qG-ci 5=?&q 'i <;XJ::d public void run() ]!A;-m { K[ \z'9Q while(nStartPos < nEndPos && !bStop) CD[7h { #ERn 8k fk"{G>&8 :?p{ga9 try{ +]>a`~ URL url = new URL(sURL); .H>Rqikj HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); S 5d{dTPq httpConnection.setRequestProperty("User-Agent","NetFox"); q6ikJ8E8b String sProperty = "bytes="+nStartPos+"-"; "~[Rwh? httpConnection.setRequestProperty("RANGE",sProperty); -
a=yid Utility.log(sProperty); t]` 2f3UO q@\_q! sbs"26IE InputStream input = httpConnection.getInputStream(); .U1dcL6 //logResponseHead(httpConnection); Y{O&-5H^| ex|kD*= b9YpUm7# byte[] b = new byte[1024]; +p[~hM6? int nRead; gO/(/e>P while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) JxvwquI { =3T?U_u@ nStartPos += fileAccessI.write(b,0,nRead); }+lxja]C //if(nThreadID == 1) H,I}R // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :D,YR(]) } ew"Fr1UGYZ lvN{R{7> oby*.61?5l Utility.log("Thread " + nThreadID + " is over!"); ;?[~]" bDownOver = true; {jVFlKP> //nPos = fileAccessI.write (b,0,nRead); \8$`:3,@ } OM.^>= catch(Exception e){e.printStackTrace ();} =;`YtOL } w %zw+E } 6,7omYof U=t'>;(g VsmL#@E //打印回应的头信息 +sI.GWQ_: public void logResponseHead(HttpURLConnection con) a(7ryl~c= { xC{NIOYn' for(int i=1;;i++) ~3%3{aa { _kd |:, String header=con.getHeaderFieldKey(i); Z\L@5.*ydE if(header!=null) _qg6(
X //responseHeaders.put(header,httpConnection.getHeaderField(header)); %b?Pasf. Utility.log(header+" : "+con.getHeaderField(header)); &-*nr/xT else k|_2aQ02 break; |.
6@-h~8 } (LfVa`<1 } f8 jaMn9o Y;w]u_ }-vBRY public void splitterStop() y(dS1.5F { Z~uKT n bStop = true; br;G5^j3? } ]M2<I#hF. ./
:86@O ]/bE${W*] } i#lo?\PO> ypd?mw&1} 4yA`);r62 /* g@2.A;N0 **FileAccess.java Z]Y4NO; *//文件访问(定位,写) ]Rye AJ3 package NetFox; AAW7@\q. import java.io.*; 6:,^CI|@t 2{CSH_"Z7 V\ "5<>+O public class FileAccessI implements Serializable{ hkJZqUA vo$66A //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 /4?`F}7) RandomAccessFile oSavedFile; ]cr;PRyv long nPos; W,~1KUTc s2v* b8>9mKs public FileAccessI() throws IOException ddP,_.0 { h7$!wf!I this("",0); ^{s0d+@{ } ~Z2eQx
jtM PR?clg=z :#}`uR,D/ public FileAccessI(String sName,long nPos) throws IOException [S:)UvB { {*U:Wm< oSavedFile = new RandomAccessFile(sName,"rw"); cnthtv+(~ this.nPos = nPos; 9ojhI=: oSavedFile.seek(nPos); gcxk'd } sQZ8<DpB f>dkT'4 ,7P^]V1 public synchronized int write(byte[] b,int nStart,int nLen) !P$xh { \2pFFVT
int n = -1;
A232"p_ try{ E5 oD|'=WA oSavedFile.write(b,nStart,nLen); jyhzLu n = nLen; / yi :Q0 } a1SOC=.M; catch(IOException e) BUinzW z{a { mj=|oIMwT e.printStackTrace (); 'cN#rHPB6 } }yw;L(3 %,et$1`g .,Qnn}:l return n; ^gzNP#A<'o } "PaGDhS fR4l4 GU?) M7R&J'SAY } t3$gwO$ JF%=Bc $C 3|Sy'J0'K /* C-u/{CP **SiteInfoBean.java Ok&>[qu */ HY;?z`= package NetFox; %uVJLz Lc<xgN+cJ i8_x1=A public class SiteInfoBean { U!:!]DX( oxQID %:KV2GP private String sSiteURL; //Site's URL vQmackY private String sFilePath; //Saved File's Path !`[I>:Ex private String sFileName; //Saved File's Name 8 QF?W{NK private int nSplitter; //Count of Splited Downloading File \.P}`Bpa I<./(X[H:# ^r*%BUU9]% public SiteInfoBean() o?K|[gNi {//nSplitter的缺省值为5 6bKO;^0 //default value of nSplitter is 5 Dh No +"!z this("","","",5); Sn2Ds)Pfx3 } qMES<UL> >B /&V|E jne9=Als5 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) t!~YO'<dS { ^>8]3@ Nh sSiteURL= sURL; &17,]# 3 sFilePath = sPath; ynZ[c8. sFileName = sName; |sqo+E this.nSplitter = nSpiltter; ?lDcaI>+n }<ONx g6Kb l$VxE'&LQ } w2N3+Tkg >xV<nLf/ &rztC]jF public String getSSiteURL() R P:F<`DB| { ]Wd`GI return sSiteURL; yC0f/O } $dTfvd 9id~NNr7 o1X/<.0+ public void setSSiteURL(String value) GGc_9?h { "Dl9<EZ sSiteURL = value; ?e y&Un" } 6!%d-Z7) b^,Mw8KsO x)VIA] public String getSFilePath() ;5Vk01R { +yb$[E* return sFilePath; f'6qJk%J } Uk*;C R^yZG{?t _d[2_b1 public void setSFilePath(String value) LlA`QLe { rw8J:?0x sFilePath = value; nN=:#4
>Y } pO/SV6N vbA7I<; A2|o=mOH public String getSFileName() \gp,Txueb { AO}i@YJth return sFileName; _Hd1sx } <a+eF}*2 9VUm=Z#` }.MoDR3\ public void setSFileName(String value) oBj>9I; { c7g.|R sFileName = value; X4} `> } 1R2o6`_ /%uZKGP c. TB8Ol public int getNSplitter() /;<e. { _7=pw5[ return nSplitter; iVKbGgA } QypiF*fSU "6E1W,|{ loeLj4"" public void setNSplitter(int nCount) _)#=>$k\ { O,=Q1*c,& nSplitter = nCount; =tS[&6/ } TDl!qp @ } !#c[~erNZ lbKv Tw`c6^%^y /* iM/*&O} **Utility.java oDW<e'Jm */ I(^jOgYU package NetFox; d4p{5F7]^ ^A11h6I u+z .J4w public class Utility { Ufaqhh q!hy;K`Jd ''(fH$pY public Utility() v?YdLR { e7XsyL'|p eg$5z
Z {{.sEi* } Y( 1L>4 V#gF*]q //线程睡眠 6bbZ<E5At public static void sleep(int nSecond) ,5eH2W { ;&+[W(7Sy try{ Sv~YFS :oy Thread.sleep(nSecond); @ate49W } <+?
Y
catch(Exception e) 2fkIdy#n@ { ~T>jBYI0 e.printStackTrace (); (#j2P0B } Gut J_2f^9 } {?EEIfg VY+(,\)U //日志 \~gA+o}Q public static void log(String sMsg) NJ|NJp&0 { H
_Zo@y~J System.err.println(sMsg); 'a;ini } (
}]37 ,J~,ga~ wJ80};! public static void log(int sMsg) v Q-ixh { 93Mdp9v+i System.err.println(sMsg); ^%n124 } n_""M:X H } !lQ#sL` F5N>Uqr*oN v!<PDw2' /* hmK8jl<6 **TestMethod.java j+_S$T8w */ \6`v.B&v package NetFox; 2
) TG $ZQlIJZ 6QN1+MwB public class TestMethod { GB&Nt{ 4R&*&GZ# l `fW{lh public TestMethod() 8 A2if9E3 { ///xx/weblogic60b2_win.exe w1wXTt try{ k~0#'I9 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); \We"?1^ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 98ca[.ui SiteFileFetch fileFetch = new SiteFileFetch(bean); 6#E]zmXO2 fileFetch.start(); K#GXpj } |7rR99 catch(Exception e){e.printStackTrace ();} P['X<Xt8 IXGW2z; [ 3$.* } tO?21?AD D 7*zB*"B'1t qTyg~]e9( public static void main(String[] args) KK:N [x { u$WBc\j new TestMethod(); CnabD{uTf } oJP<'l1 } ?Wwh
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