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/* 1iz =i^} **SiteFileFetch.java )m7%cyfC */ > "F-1{ package NetFox; ]gPx%c import java.io.*; Ro2V-6/ import java.net.*; PM84Z@Y Jl\xE`-7 X2Ak public class SiteFileFetch extends Thread { Fw&ImRMk wd*B3 jV*10kM< SiteInfoBean siteInfoBean = null; //文件信息Bean [IOI&`?D long[] nStartPos; //开始位置 y{mt *VA4 long[] nEndPos; //结束位置 e x Z/ FileSplitterFetch[] fileSplitterFetch; //子线程对象 GqCBD-@4v. long nFileLength; //文件长度 tjtvO@?1- boolean bFirst = true; //是否第一次取文件 d {U%q
d boolean bStop = false; //停止标志 +&G(AW File tmpFile; //文件下载的临时信息 ENhLonMeV DataOutputStream output; //输出到文件的输出流 ; j.d 8X`DFeJ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 3 twA5)v public SiteFileFetch(SiteInfoBean bean) throws IOException zS;ruK%2 { k)>H=?mI siteInfoBean = bean; n`Pl:L*kG //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Q.B)?w m tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 1r>]XhRFZ if(tmpFile.exists ()) ~fkcal1@ { q#AEu
xI1 bFirst = false; h<&GdK2U+ read_nPos(); 4Px|:7~wT8 } a+LK~mC* else ,HDhP { ASy?^Jrs5 nStartPos = new long[bean.getNSplitter()]; `e'wWV nEndPos = new long[bean.getNSplitter()]; FA,n> } o$L%t@ |E6_TZ#= c+3(|k-M 87! jn'A } dnD@BQ >|%3j,<U [6l0|Y public void run() pl
r@ { Gz{%Z$A~o //获得文件长度 kB@gy} //分割文件 Lm}.+.O~d //实例FileSplitterFetch ?=Ceo#Er //启动FileSplitterFetch线程 -b!Z(}JK //等待子线程返回 ^)]U5+g? try{ y_L8i[ if(bFirst) yrEh5v: { }@6Ze$> nFileLength = getFileSize(); QD%xmP if(nFileLength == -1) 26aDPTP $< { 5OWyxO3{ System.err.println("File Length is not known!"); ++b[>}; } k vZ w4Pk else if(nFileLength == -2) >U*p[ FGW { 5;KJ0N*- System.err.println("File is not access!"); vai w*?jV } NL:-3W7vf else u4FD}nV { wyX3qH for(int i=0;i<nStartPos.length;i++) w3q'n% { mTu>S nStartPos = (long)(i*(nFileLength/nStartPos.length)); 9+9g (6 } yOz6a :r for(int i=0;i<nEndPos.length-1;i++) '8)kFR^9 { 8'@5X-nD nEndPos = nStartPos[i+1]; 15J"iN2"W } Y910\h@V nEndPos[nEndPos.length-1] = nFileLength; yH"i5L9 } Szt2 "AR } $$ *tK8# ^=^\=9"
b KJyCfMH&:@ //启动子线程 A{\?]]/ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; X>`03?L for(int i=0;i<nStartPos.length;i++) C)j/!+nh { QBGm)h?= fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (8m_ GfT siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), b}NNkM nStartPos,nEndPos,i); NUVKAAgMX Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $)NS]wJ]3 fileSplitterFetch.start(); ~.3v\Q } RN 4?]8 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *_I`{9~' siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %`k [xz // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", AR( gI]1 nEndPos = " + nFileLength); j"6|$Ze8 // fileSplitterFetch[nPos.length-1].start(); #b*4v&< jC[_uG Q(-&}cY //等待子线程结束 8>WA5:]v //int count = 0; 5QK%BiDlr //是否结束while循环 &o x boolean breakWhile = false; +pG+ xI
t[+bZUS$~ "9'3mmZm=? while(!bStop) N{bg-%s10i { KE"6I write_nPos(); 8<}=f4vUj5 Utility.sleep(500); AJ6l#j- breakWhile = true; Kw"e4 a rzHBop-8 rK'Lvt@w for(int i=0;i<nStartPos.length;i++) b||usv[or { J:W+'x`@ if(!fileSplitterFetch.bDownOver) n[e C { ynM:]*~K breakWhile = false; ./;uhj break; QWa@?BO2p } W8bp3JX" } F8<G9#%s\ if(breakWhile) ByP<-Deh break; !0hyp |F:> \E,2VM@6 [ x+-N7 //count++; y'`7zJ //if(count>4) .9e5@@VR // siteStop(); !;8Y?c-D } '8zd]U eY#^vB wipl5O@L System.err.println("文件下载结束!"); R.WB.FP } d #1&"( catch(Exception e){e.printStackTrace ();} >)C7IQ/ } PcA^ jBgGl 9d|8c >
I 8/j|=Q,5 //获得文件长度 ` Ny(S2 public long getFileSize() # *pB"L { 'kj
q C int nFileLength = -1; nG3SDL#(k try{ ;/kd.Q URL url = new URL(siteInfoBean.getSSiteURL()); B|a <=~ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Dks n httpConnection.setRequestProperty("User-Agent","NetFox"); Drtg7v{@\ OKm,iIp] ?bM%#x{e int responseCode=httpConnection.getResponseCode(); Uf+y$n- if(responseCode>=400) TYD( 6N { bC+ZR{M processErrorCode(responseCode); #!z-)[S.+ return -2; //-2 represent access is error e0y.J }
Hy:x.'i $+J39%Y!^ FVl,
ttW String sHeader; p@~Y[a = 7.VP7;jys ]tu
OWR for(int i=1;;i++) M887 Q'HSi { 1lIs
jBo g //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); RQWUO^&e^ //Utility.log(in.readLine()); X%s5D&gr sHeader=httpConnection.getHeaderFieldKey(i); Z*w({k7] if(sHeader!=null) Zs/-/C| { 6_" n if(sHeader.equals("Content-Length")) ]t!v`TH { <2@t~9 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 6R^F^<< break; l-W)?d } :I7qw0? } [r>hKZU2 else "2%R? break; D3aX\ NGP } gzi=+oJ|4 } ?;](;n#lU catch(IOException e){e.printStackTrace ();} >F^$
' b] catch(Exception e){e.printStackTrace ();} t)8crX}P j%3$ytf|p Tx&H1 Utility.log(nFileLength); S+KKGi_e bj0HAgY@ 32+N?[9
* return nFileLength; fhZwYx&t } ::02? ;p*L(8<YI @=w)a //保存下载信息(文件指针位置) "UD)3_R private void write_nPos() 0y<9JvN$9 { 9Oj b~ try{ ,9^ 5 output = new DataOutputStream(new FileOutputStream(tmpFile)); [wSoZBl output.writeInt(nStartPos.length); U7fpaxc- for(int i=0;i<nStartPos.length;i++) hb~d4J=S { =CFg~8W // output.writeLong(nPos); *g}==o` output.writeLong(fileSplitterFetch.nStartPos); Z\C"/j<y output.writeLong(fileSplitterFetch.nEndPos); a9lYX*: } Ke@Bf
output.close(); ]b}3f< } < q(i(% catch(IOException e){e.printStackTrace ();} RgFpc*.T catch(Exception e){e.printStackTrace ();} l]DRJ } Bz,D4E$ Us "G X_ IuPDr % //读取保存的下载信息(文件指针位置) !^L}LtqHI private void read_nPos() xF) .S@ { BSy4
d> try{ PNLlJlYlP DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 24InwR|^ int nCount = input.readInt(); OdyL
j nStartPos = new long[nCount]; FLPN#1 nEndPos = new long[nCount]; |#*+#27 for(int i=0;i<nStartPos.length;i++) O+XQP!T { oKSW:A nStartPos = input.readLong(); $(J)F-DB i nEndPos = input.readLong(); wAR:GO'n } .wm<l: input.close(); ZPM7R3%V)z } T5 pc%%q catch(IOException e){e.printStackTrace ();} 2mj>,kS?c catch(Exception e){e.printStackTrace ();} 4mBM5Tv } UlN}SddI9 /Y\q&} -{eiV0<^ private void processErrorCode(int nErrorCode) 7 je1vNs { T;3~teVYB System.err.println("Error Code : " + nErrorCode); )`5-rm~* } vA*NJ%&` ZQz;EV! {XhpxJ__ //停止文件下载 )}w-;HX public void siteStop() h*P0;V`UX { +f]I7e:qp bStop = true; ?\Y7]_]/ for(int i=0;i<nStartPos.length;i++) 0x'Fi2=` fileSplitterFetch.splitterStop(); V /OW=WCzN R'K /\ ~c1~)QzZ } u_WW
uo } NFIFCy! //负责部分文件的抓取 3kJSz-_M **FileSplitterFetch.java T^xp2cZ */ H'EBe;ccM package NetFox; OZObx <
R@&<E6 2(D&jL import java.io.*; |@-y+vbA* import java.net.*; Dhg/>@tw Eh_[8:dK nzYFa J + public class FileSplitterFetch extends Thread { jaux:fU dnPr2oI?I ~}~ yR*K% String sURL; //File URL /s:akLBaD long nStartPos; //File Snippet Start Position >273V+dy long nEndPos; //File Snippet End Position g]}]/\ int nThreadID; //Thread's ID 1^;&?E boolean bDownOver = false; //Downing is over <* PjG}Z. boolean bStop = false; //Stop identical xi\uLu?i FileAccessI fileAccessI = null; //File Access interface hi]\M)l&x 6B?1d
/8V 0j/i):@ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException /_bM~g { qn\>(& this.sURL = sURL; GWShv\c} this.nStartPos = nStart; Q;1$gImFz this.nEndPos = nEnd; }Ty_} 6a5 nThreadID = id; DNM~/Oo fileAccessI = new FileAccessI(sName,nStartPos);//定位 1G8t=IA%D } b;|^62 eP3 itrH( :\1&5Pm] public void run() 9Bmgz =8 { JeCEj=_Z while(nStartPos < nEndPos && !bStop) X_|} b[b { %^E>~ `[1]wV5(5@ [
06B)|s try{ r?2C%GI` URL url = new URL(sURL); X4*/h$48 w HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :Ws3+OI'm3 httpConnection.setRequestProperty("User-Agent","NetFox"); Nb{oH +$b String sProperty = "bytes="+nStartPos+"-"; qm}7w3I^ httpConnection.setRequestProperty("RANGE",sProperty); 55|$Imnf Utility.log(sProperty); g(;ejKSR N=L
urXv }mJ)gK5b 6 InputStream input = httpConnection.getInputStream(); B "}GAk}V //logResponseHead(httpConnection); I`KN8ll 9p$q@Bc `^N;%[c`z byte[] b = new byte[1024]; .g&BA15<F6 int nRead; E3KPJ`=!*" while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ,9M \`6 { N4mQN90t nStartPos += fileAccessI.write(b,0,nRead); aH$*Ue@Q //if(nThreadID == 1) DwTZ<H4 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p-/x Md } pV-.r-P qC|re!K aA
yFu_ Utility.log("Thread " + nThreadID + " is over!"); ->#7_W bDownOver = true; @o^sp|k ! //nPos = fileAccessI.write (b,0,nRead); AU$5"kBE } %I=J8$B]f catch(Exception e){e.printStackTrace ();} Y2D)$ } -s!PO;qm } $fvUb_n cE]kI,Fw,M FRF}V@~ //打印回应的头信息 "Ii!)n, public void logResponseHead(HttpURLConnection con) {S&&X&A`v { *AN#D?X_ for(int i=1;;i++) )*JTxMQ { \)"qN^we String header=con.getHeaderFieldKey(i); ?%0i,p@< if(header!=null) dX3>j{_ //responseHeaders.put(header,httpConnection.getHeaderField(header)); %E!0,y,: Utility.log(header+" : "+con.getHeaderField(header)); r#~6FpFVK^ else `4p9K break; BzUx@, } lJ,s}l7 } |O+binq \%^3Izsc LOYv%9$0*p public void splitterStop() / q!&I { @<sP1`1 bStop = true; Z,&ywMm/G } +[7u>RJ K^vMIo h wLbnsqa } Y{'G2)e K=>/(sWiq gy[uqm_ T /* \
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T **FileAccess.java 1wM
p3 *//文件访问(定位,写) 1|89-Ii] package NetFox; )G|UB8] import java.io.*; Mt:(w;Y `'QPe42 n#fg7d% public class FileAccessI implements Serializable{ A|+{x4s` 8YJ({ Ou_ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Y#5S;?bR RandomAccessFile oSavedFile; ]_,~q@r$ long nPos; *]=)mM# w{qYP Vqr&)i"b$ public FileAccessI() throws IOException eyWwE% { DQ}]'*@? this("",0); iB`m!g6$ } oAx0$]+%V) WQ]pg
" ] ge-b\ public FileAccessI(String sName,long nPos) throws IOException `F@yZ4L3S { M/qiA.C@W oSavedFile = new RandomAccessFile(sName,"rw"); N@>S>U8C this.nPos = nPos; EIfrZg7R oSavedFile.seek(nPos); o_5@R+& } L$Q+R' 1 &<@(S< VQ;=-95P public synchronized int write(byte[] b,int nStart,int nLen) Xz@>sY>Jc { "8I4]' int n = -1; ?~{xL" try{ ^b#E%Rd oSavedFile.write(b,nStart,nLen); ]=3O,\ n = nLen; J @fE") } 4SrK]+| catch(IOException e) ^s*} 0 { )wRD e.printStackTrace (); U8mu<) } pf_ /jR 2^aTW`>L >seB["C return n; BSY#xe V } m @%|Q; wMoAvA_oS @!da1jN } +9J>'oe'D ^b~5zhY& ;~J~g# /* _<7FR:oBZ **SiteInfoBean.java #u$z-M ! */ `vSsgG package NetFox; ){:aGGtko v(O.GhJ@ ;=OH=+Rl public class SiteInfoBean { 5PPpX =\ oX~CTunP wW4S@m private String sSiteURL; //Site's URL i]z
i[Zo$ private String sFilePath; //Saved File's Path z"#.o^5 private String sFileName; //Saved File's Name !)=o,sVA private int nSplitter; //Count of Splited Downloading File CmOb+:4@K Ul
Iw&U +q$|6? public SiteInfoBean() p rgjU {//nSplitter的缺省值为5 3@L%#]xwi //default value of nSplitter is 5 Cs{f'I this("","","",5); h~p}08 } jHCKV |_*$+ Kc0OLcu^d public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) vp@+wh]# { C.-a:oQ[ sSiteURL= sURL; o{p_s0IX;S sFilePath = sPath; 3XtGi<u sFileName = sName; @UJmbD{ this.nSplitter = nSpiltter; z
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;pG( )[*O^bPowI public String getSSiteURL() G
m! ]
{ Tt|6N*b' return sSiteURL; *
U4:K@y } sBnPS[Oo beE%%C]X K~-XDLh5Nu public void setSSiteURL(String value) rR~X>+K { ~x:]ch| sSiteURL = value; vM/v}6;_K2 } AtDrQ<>y' $lA,{Q )g_zPt public String getSFilePath() ^E17_9? { ,IE0+!I return sFilePath; ,v_r$kh^ } Y;Gm, ASw|sw ':]a.yA\1 public void setSFilePath(String value) N-E`go { oF R'GUQC sFilePath = value; +hgCk87%# } <v k$eB8EC Ai18]QD- u$8MVP public String getSFileName() Cl!jK^AbG { wtS*w return sFileName; ,&]`
b#Rc } V JL;+ W2h[NimU (t$/G3E public void setSFileName(String value) cV,Dl`1r { Po.BcytM sFileName = value; \r,.hUp } &Ld8Z9IeFp M) XQi/ m?$G(E5 public int getNSplitter() PSS/JFZ^ { , vyx`wDd return nSplitter; D(U3zXdO } @(fY4]K ilpZ/Rs P%HyIODS public void setNSplitter(int nCount) e~]e9-L>I { }yDq\5s
Q[ nSplitter = nCount; v:1Vli. } 9mphj)`d;# } i!x5T%x_ 9?chCO(@ "0zXpQi,B /* n@[</E( **Utility.java ]},Q`n>$ */ kTc5KHJ7 package NetFox; 9XvM%aHs: ULmdt
l(\8c><m public class Utility { F6]!?@ 1";e'?^x {}&f\6OI% public Utility() aw%vu { JO{-
P }SN44 di( udI:]:,P } [3sxzU!t~ `yXx[deY //线程睡眠 U{uWk3I_b public static void sleep(int nSecond) ss@}Dt^ { r9a!,^}F try{ Hs-.83V Thread.sleep(nSecond); AnE_<sPA } zn;Hs]G catch(Exception e) pXj/6+^ { ~K$"PKs3 e.printStackTrace (); fZ~kw*0* } G[<[#$( } $]U5 FoD/Q
//日志 h* %0@ public static void log(String sMsg) o7a6 )2JK {
uC*:#[ System.err.println(sMsg); XvkI+c } MD
?F1l"}% pM'IQ3N FDd>(!> public static void log(int sMsg) 3auJ^B} { NuS|X
System.err.println(sMsg); {}J@+Zsi } (06Vcqg } ;ko[(eFN@ MLD>"W "kBqY+:Cn /* _QMHPRELk **TestMethod.java _?]BVw */ fByh";<`P package NetFox; l88a#zUQDN &c<}++'h @FdCbPl$ public class TestMethod { yK%GsCJd: <X I35\^ 4>"cc@8&~ public TestMethod() 4lh
{ ///xx/weblogic60b2_win.exe p-'6_\F.Ke try{ NzeI/f3K5 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Y:"v=EhB //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ]D) 'I` SiteFileFetch fileFetch = new SiteFileFetch(bean); m!#)JFe67 fileFetch.start(); M$]O=2h+2 } Neo^C_[vN catch(Exception e){e.printStackTrace ();} KIAe36.~ x#j\"$dla Msa6yD# } 4j/ iG\ !G"9xrr1 s{z~Axup- public static void main(String[] args) ~
S?-{X+ { h\u0{!@} new TestMethod(); qzHqj; } .KU SNrs' } n:bB$Ai2 点击下载更多相关资料
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