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/* &529.> **SiteFileFetch.java 5?k_Q"~ */ ~*Ve>4 package NetFox; HGB96,o f9 import java.io.*; |]DZc/ import java.net.*; M9]O!{sq JJ,Fh
. 0F`@/C1y55 public class SiteFileFetch extends Thread { 9#/z[! <!K2xb-d^ Y:G6Nd
VFM SiteInfoBean siteInfoBean = null; //文件信息Bean gPe*M =iF long[] nStartPos; //开始位置 0gHJ%m9s long[] nEndPos; //结束位置 k\Oy\z@ FileSplitterFetch[] fileSplitterFetch; //子线程对象 )qD%5} t long nFileLength; //文件长度 (G}*ho boolean bFirst = true; //是否第一次取文件 ag14omM- boolean bStop = false; //停止标志 G?e,Q$ File tmpFile; //文件下载的临时信息 v@`#!iu DataOutputStream output; //输出到文件的输出流 6,uW{l8L s[h'W~ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -n!.PsGO> public SiteFileFetch(SiteInfoBean bean) throws IOException }0?642 =- { XV)ej>A-V siteInfoBean = bean; t3 *2Z u //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }{:H0)H* tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); f&H):. if(tmpFile.exists ()) X~5TA)h;~ { m}]"TFzoVM bFirst = false; xx
nW 1`] read_nPos(); fV
Ah</aZ } e<l Wel else DM! vB+j+, { #It{B nStartPos = new long[bean.getNSplitter()]; aT(Pf7
O nEndPos = new long[bean.getNSplitter()]; '%V ;oJ" } zkI\ji Jm\'=#U# C$aiOK-]+ `HgT5} } /%$'N$@f Cq u/(= U[c,cdA public void run() x<P$$G/ { s8{3~ Hv //获得文件长度 c 3 P //分割文件 -#Yg B5 //实例FileSplitterFetch g!V;*[ //启动FileSplitterFetch线程 8Y
sn8 //等待子线程返回 ~{*FjZ`h try{ D^04b<O<x if(bFirst) f 7y1V(t { 0D/j2cT("k nFileLength = getFileSize(); k:Uyez if(nFileLength == -1) ;6L<Syl5 { 0DIaXdOdW+ System.err.println("File Length is not known!"); n+rAbn5o$ } xI<Dc*G else if(nFileLength == -2) T5-50nU,~ { hBLJKSv System.err.println("File is not access!"); aQMET~A: } X/];*='Q else I&YYw8& { niFX8%<hP for(int i=0;i<nStartPos.length;i++) UALwr>+VJ { WA8Qt\Q nStartPos = (long)(i*(nFileLength/nStartPos.length)); (".`#909 } /+"BU-aQk for(int i=0;i<nEndPos.length-1;i++) HpSgGhL'J& { ]b.@i&M nEndPos = nStartPos[i+1];
IpoZ6DB$ } |Ag~k? QC nEndPos[nEndPos.length-1] = nFileLength; 7sC$hm] } O=MO M } be$wGO=Ts >VE,/?71@ L<J';#BD //启动子线程 %TPnC'2 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Zu_m$Mx for(int i=0;i<nStartPos.length;i++) Q68&CO(rE { W~POS'1 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /.aZXC$] siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), +AtZltM i nStartPos,nEndPos,i); IW
Lv$bPZ/ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); f&js,NU" fileSplitterFetch.start(); )2g\GRg6 } 9|D!&=8
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6QLWF@ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); }7IS:"tu // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", hc"+6xc nEndPos = " + nFileLength); H"WkyvqXb // fileSplitterFetch[nPos.length-1].start(); ]N:SB /$! /F@^ 6sRn_y //等待子线程结束 gJ+MoAM" //int count = 0; p=coOWOQ //是否结束while循环 Ii?<Lz boolean breakWhile = false; & *B@qQ ,`^B!U3m 8,a&i:C while(!bStop) .*r?zDV { 7F>5<Gv:- write_nPos(); }C}~)qaZv+ Utility.sleep(500); xA`Q4"[I breakWhile = true; (NFq/w% 5:hajXd [ j?n}D@L for(int i=0;i<nStartPos.length;i++) U!XC-RA3
_ { SWz+.W{KQ" if(!fileSplitterFetch.bDownOver) ES;7_ .q { "e69aAA, breakWhile = false; q+19EJ( break; Zi|MWaA.f } Zuo7MR } ^Gq4Yr if(breakWhile) I
.p26 break; 2rB$&>}T V.XHjHT zg.' //count++; Kg VLXI6 //if(count>4) (Vf&,b@U_ // siteStop(); T8Gx oNm } c;xL. d}EGI VSx[{yn System.err.println("文件下载结束!"); 1U;je,) } e=o<yf9>Q catch(Exception e){e.printStackTrace ();} \wCj$-;Jt } MQ$[jOAqP e-ljwCD ua/A &XQx //获得文件长度 ecA:y!N public long getFileSize() _SY<(2s]B { mv/'H^"[_ int nFileLength = -1; `4'v)!? try{ rqxoqc Z URL url = new URL(siteInfoBean.getSSiteURL()); mEa\0oPGB HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); k_r12Bu httpConnection.setRequestProperty("User-Agent","NetFox"); :2^%^3+V KqP!={>" fZ`b~ZBwIj int responseCode=httpConnection.getResponseCode(); JX7_/P if(responseCode>=400) @N7X(@O { Tsxl4ZK processErrorCode(responseCode); 'VS!< return -2; //-2 represent access is error W#P)v{K } _k\*4K8L -7fsfcGM$ beRpA; String sHeader; B[F x2r`0 R^iF^IB <ap%+(!I for(int i=1;;i++) ^o,P>u!9 { Vk5}d[[l //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); "diF$Lj //Utility.log(in.readLine()); `J|bGf# sHeader=httpConnection.getHeaderFieldKey(i); "9!ln if(sHeader!=null) WogJ~N,d53 { M`-#6,m3 if(sHeader.equals("Content-Length")) X~*1 { U ; JZN nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
\U(qv(T break; n[|&nv6x
} 1#qyD3K } VU J*\Sg else Ck%nNy29 break; eGHxiC } JfxD-9U^>u } Jt\?,~, catch(IOException e){e.printStackTrace ();} 3BAls+<p o catch(Exception e){e.printStackTrace ();} q!\K!W \ 6{B$_Usg |a%&7-; Utility.log(nFileLength); -GLI$_lLF ts`c_hH,1' {f((x1{HZx return nFileLength; ^q-]."W]t~ } q(p]6Ha| fW~r%u
.y 4:.yE|@h[ //保存下载信息(文件指针位置) {u{n b3/jl private void write_nPos() U$Z)v1&{ { 5%,J@&5G s try{ >'iXwe- output = new DataOutputStream(new FileOutputStream(tmpFile)); 1//d68*" output.writeInt(nStartPos.length); NYA, for(int i=0;i<nStartPos.length;i++) ~2@+#1[g8z { 0-M.>fwZ= // output.writeLong(nPos); \b95CU output.writeLong(fileSplitterFetch.nStartPos); nsIx5UA_n output.writeLong(fileSplitterFetch.nEndPos); Azvj(j } 3jZPv;9OC output.close(); es 8%JTi } &<2~7?$! catch(IOException e){e.printStackTrace ();} H:Y?(" k catch(Exception e){e.printStackTrace ();} @W[`^jfQ } X31[ |=fa`8mG Au<NUc
2 //读取保存的下载信息(文件指针位置) a'u:1C^\ private void read_nPos() s_S[iW`l= { ZjF5*A8l try{ pKJ0+mN#" DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); :c[iS~ ~Y int nCount = input.readInt(); w/BaaF.0 nStartPos = new long[nCount]; _^]2??V nEndPos = new long[nCount]; F6J,: for(int i=0;i<nStartPos.length;i++) [vh&o-6 { L9ECF;) nStartPos = input.readLong(); )65 o nEndPos = input.readLong(); O
W`yv } M6l S2 input.close(); J:LwO } d|#sgGM<8 catch(IOException e){e.printStackTrace ();} 6yH(u}!. catch(Exception e){e.printStackTrace ();} ~3bH2,{L[ } ~iI4v#0 wXI6KN- $L%gQkz_ private void processErrorCode(int nErrorCode) '0|0rwx { xo3bY6<n System.err.println("Error Code : " + nErrorCode); V_+XZ+7Lx} } 8 :B(}Y4K 3pg_` Hj\>&vMf //停止文件下载 m%au* 0p public void siteStop() "=8= G { qM%l bStop = true; $fZVh% for(int i=0;i<nStartPos.length;i++) w6FtDl$ fileSplitterFetch.splitterStop(); 3H"bivK vdA3 7bJAOJ'_ } xh|NmZg } v3>jXf //负责部分文件的抓取 ~Y;_vU **FileSplitterFetch.java t$+[(}@+ */ Z
,4G'[d package NetFox; 86+nFk bz$)@gLc a2Q_K2t import java.io.*; 4FLL*LCNX import java.net.*; c*R?eLt/ 3>O=d> F&pJ faig public class FileSplitterFetch extends Thread { BhFyEY( h|m>JDxn w
K)/m`{g String sURL; //File URL o +-G@16 long nStartPos; //File Snippet Start Position Nr6[w|Tzd long nEndPos; //File Snippet End Position oY Y?`<N# int nThreadID; //Thread's ID * F[;D7sZ~ boolean bDownOver = false; //Downing is over 3pQ^vbQ" boolean bStop = false; //Stop identical Qmbl_# FileAccessI fileAccessI = null; //File Access interface 9qe< bds1 JSKAlw &.D#OnRh9 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException %#gHa { XNZW J this.sURL = sURL; s,~)5nL this.nStartPos = nStart; Iq/V[v this.nEndPos = nEnd; *Y"j 0Yob nThreadID = id; H!6nIS9yxt fileAccessI = new FileAccessI(sName,nStartPos);//定位 V'n4iM } ~#
~XDcc (Qf"|3R4 Fh[Gq public void run() {[W [S@+ { cHr.7 w while(nStartPos < nEndPos && !bStop) uPZ<hG#K { 78o>UWA: Fkq;Q 0{0A,;b try{ 6KpG,%2L# URL url = new URL(sURL); b`%(.& HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /U1"P httpConnection.setRequestProperty("User-Agent","NetFox"); w]-,X` String sProperty = "bytes="+nStartPos+"-"; H<YhO&D*u httpConnection.setRequestProperty("RANGE",sProperty); 7|vB\[s Utility.log(sProperty); ;`CNe$y
A08b=S FEoH$.4 InputStream input = httpConnection.getInputStream(); ;_]Z3 //logResponseHead(httpConnection); 6B pm+} Rq,ST: Wu:@+~J.h byte[] b = new byte[1024]; ;`p!/9il int nRead; .WeP]dX%:f while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) %BV2 q
{ )'pc 1I nStartPos += fileAccessI.write(b,0,nRead); ?A]@$ //if(nThreadID == 1) c+_F}2)
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); '5:P,1tWU } 6e%|.}U QAI!/bB vbn'CY]QU Utility.log("Thread " + nThreadID + " is over!"); qYi<GI*|@ bDownOver = true; gr&Rkuyfv //nPos = fileAccessI.write (b,0,nRead); <;T$?J9 } {\87]xJ catch(Exception e){e.printStackTrace ();} M?yWFqFt9m } }3rWmo8V } %\uEV aucQZD-_" F|ib=_)3 //打印回应的头信息 N=?! ~n9Q- public void logResponseHead(HttpURLConnection con) fBZ\, { 3aK/5)4|B for(int i=1;;i++) BAUo`el5 { !uno!wUIYd String header=con.getHeaderFieldKey(i); `;'fCO! if(header!=null) slV7,4S&! //responseHeaders.put(header,httpConnection.getHeaderField(header)); y%9Q]7&= Utility.log(header+" : "+con.getHeaderField(header)); qrq9NPf else P2Or|_z break; KR4vcI[4 } tOu:j [ } x>E**a?!L X*cf|g @C}Hx;f6 public void splitterStop() T -'B-g { 9Ytd E*,k bStop = true; K% Gbl# } 4_A9o9&_Rh `6t3D&.u0 1|PmZPKq9n } #h#Bcv0 Z |>Xw"]b; TYs#v/)I /* .x^`y2'U **FileAccess.java 1V@\L|Y *//文件访问(定位,写) cv'Fc package NetFox; VB+sl2V<h import java.io.*; Xc^7 s\-^vj3 ,;_D~7L public class FileAccessI implements Serializable{ N,><,7!q$, 0 CJ4]mYl //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ji &*0GJQ RandomAccessFile oSavedFile; )kE(%q:*P$ long nPos; rI[Lg0S ]:Q7Gys d\cwUXf
J public FileAccessI() throws IOException ,0~/ Cn
{ /&+6nOP this("",0); qM$~5uu } Nr#Y]9nA `tCOe })l+-H" public FileAccessI(String sName,long nPos) throws IOException yk5T"#'+ { }UzO_&Z#6 oSavedFile = new RandomAccessFile(sName,"rw"); <IF\;,.c this.nPos = nPos; jZ'y_ oSavedFile.seek(nPos); <N{pMz } FZ)Y<r8|s 7{vnhl(Z ~YuRi#CTD: public synchronized int write(byte[] b,int nStart,int nLen) |sw&sfH[FD { ; md{T' int n = -1; 9u 'hCi( try{ 3,K*r"= oSavedFile.write(b,nStart,nLen); F7(~v2| n = nLen; lRn6Zh } J-W,^% catch(IOException e) Y=gj{]4 { ]c8$% e.printStackTrace (); 9iQcK&D
2 } RfT#kh/5 !(!BW9Zt+ 6]|NB & return n; tk^1Ga3 } VD\pQ.= @" ~Mglgw ?-F SDNQ } ]`D(/l' ^}2 ie| Qa,^;hZWS /* !U"1ZsO)l **SiteInfoBean.java (u]ajT */ Bc4{$sc"O package NetFox; J! 4l-.- '_n{+eR74 dt"[5;_P` public class SiteInfoBean { VA _O0y2 5L<}u`0J ?=<vC private String sSiteURL; //Site's URL }P$48o VY private String sFilePath; //Saved File's Path uP/WRQ{rW> private String sFileName; //Saved File's Name jl<rxO?-F private int nSplitter; //Count of Splited Downloading File Rk
PY@> s0Ii;7fA{ &)vX7*j public SiteInfoBean() (8s]2\/Ar {//nSplitter的缺省值为5 r\Wp\LfY&{ //default value of nSplitter is 5 j$*]'s&_hZ this("","","",5); -Uz
xs5Zl } 1K'0ajl1A q{UP_6OF m_H$fioha, public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) R]%ZqT{PS { h2Ifq!(: sSiteURL= sURL; oHmU| sFilePath = sPath; x8T5aS sFileName = sName; ]{OEU]I@ this.nSplitter = nSpiltter; XN"V{;OP1 Z'GOp? /UjRuUC] } NQ<~$+{ NDB ]8C yZ,k8TJ", public String getSSiteURL() `n:IXD5' { A.vcE return sSiteURL; _ Z6/r^c } r0kA47 J+&AtGq]u J
p .wg public void setSSiteURL(String value) +asJV1a { t8s1d sSiteURL = value; l)z15e5X } Q8M&nf %^"T z,f IxCEE5+`% public String getSFilePath() .i/]1X*;r^ { lN+NhPF return sFilePath; i^uC4S~ } *&e+z-E JRA. ,tQc _]tR1T5e public void setSFilePath(String value) .jr1<LE { >qx~m>2|8] sFilePath = value; g\
@nA4 } n/s!S & *6Rl[eXS 'N5qX>Ob public String getSFileName() 1X2oz { m7kDxs(KO return sFileName; U:MkA(S%c } <_ */ _\"P<+! #rV=!j|| public void setSFileName(String value) @DkPJla& { ok'0Byo sFileName = value; )1j~(C)E8 } }QncTw0 5"y
p|Yl svyC(m)' public int getNSplitter() K4n1#]8i { &tD`~ return nSplitter; ?9!tMRb } N)
{ Ats"iV {<~XwJ. public void setNSplitter(int nCount) z.Y7 u3K.8 { HcHfwLin0 nSplitter = nCount; $2>tfKhtA } 2>fG}qYy$ } yL.si)h(p yixW>W} WGG|d)'@ /* B0 q![ **Utility.java 8t}=?:B+{ */ ^Sy\< package NetFox; 2I ?HBz1v j#&sZ$HQ4 4>Uo0NfL public class Utility { 4g\a$7r
]vQo^nOo PBn(k>=+ public Utility() (fh:q2E# {
NFLmM B[4y(Im $'9r=#EH } DGHX:Ft#
{yt]7^ //线程睡眠 W%Rh2l public static void sleep(int nSecond) ~8pf.^,fi { QJdSNkc6 try{ AV d Thread.sleep(nSecond); @dCu]0oNI } ^#3$C?d catch(Exception e) gyCb\y+\a { YXIDqTA+ e.printStackTrace (); ^ ?tAt3dMI } mkE*.I0= } IH~H6US 5\=9&{WjND //日志 ts?b[v public static void log(String sMsg) &p;};n { jcq(=7j System.err.println(sMsg); lBG*P>; } 82J0t}:U '12|:t&7 & p_;&P_ public static void log(int sMsg) ` V^#Sb { bk6$+T=> System.err.println(sMsg); sWavxh8A } ziH2<@ } j~Gu;%tq bq(*r:`" g=U?{<8.m /* X'?v8\mPK **TestMethod.java &2xYG{Z */ Jh466;
E package NetFox; [0 &Lvx lh#GD"^(w& wkJB5i^<w public class TestMethod { GV[%P _L$)~},cT lC_zSmT public TestMethod() Cg{$$&_(Hj { ///xx/weblogic60b2_win.exe qsk71L try{ er#we=h SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); \o
% ES //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); r`B+ KQ4 SiteFileFetch fileFetch = new SiteFileFetch(bean); e#nTp b fileFetch.start(); 3&y
u } =]zPUzr,| catch(Exception e){e.printStackTrace ();} --^D)n rXm!3E6JL A\#?rK } ~36c0 = *(>$4$9n ]oya<C6pR public static void main(String[] args) @nc!(P7_ { \3LD^[qi new TestMethod(); "5y^s!/ } FBY~Z$o0. } l&|{uk 点击下载更多相关资料
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