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/* {wD:!\5 **SiteFileFetch.java umN4|X */ afE8Kqa:H package NetFox; 7LsVlT[ import java.io.*; C8%MKNPd import java.net.*; ,V[|c$ ]fSpG\yU 63QF1*gPH public class SiteFileFetch extends Thread { Q@[ (0R1 CYYo+5x O-ppR7edh SiteInfoBean siteInfoBean = null; //文件信息Bean QBd4ok:R long[] nStartPos; //开始位置 jB,VlL long[] nEndPos; //结束位置 _k#!^AJ}x FileSplitterFetch[] fileSplitterFetch; //子线程对象 (5e4>p&+ long nFileLength; //文件长度 gF:|j( boolean bFirst = true; //是否第一次取文件 M7{_"9X{ boolean bStop = false; //停止标志 :qj7i( File tmpFile; //文件下载的临时信息 h0")NBRV& DataOutputStream output; //输出到文件的输出流 pGr4b:N ,I
H~ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ?3gf)g= public SiteFileFetch(SiteInfoBean bean) throws IOException DDj:(I?,w { cNMDI siteInfoBean = bean; u7 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); :Sn4Pg
`Q tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Q]<6voyy if(tmpFile.exists ()) @U:PXCvh { HGF&'@dn bFirst = false; h-\Ov{~ read_nPos(); vlFq-W! } N]-skz<v else sF3@7~m4 { e.W <pI, nStartPos = new long[bean.getNSplitter()]; T(Ji%S> nEndPos = new long[bean.getNSplitter()]; x,HD,VQR/ } 55/)2B2J r}}2Kl vy-q<6T}:p sl:1P^b } :q~5Xw/ 'EN80+xYX FSkLR h public void run() `6(Zc"/
\m { u/V&1In //获得文件长度 HX ,\a` //分割文件 |uI~}pSG //实例FileSplitterFetch `VF_rC[? //启动FileSplitterFetch线程 S0ltj8t //等待子线程返回 :KqSMuKR try{ <sSH^J4QqX if(bFirst) 7>h(M+
/ { Ii<k<Bt, nFileLength = getFileSize(); ~V0 GRPnI if(nFileLength == -1) \jb62Jp { YF>15{H System.err.println("File Length is not known!"); #kE8EhQZ } #J t1AV else if(nFileLength == -2) u>=\.d< { F$i 6 System.err.println("File is not access!"); 39I|.B" } +U4';[LG1C else \-sW>LIA { s>%.bAxc for(int i=0;i<nStartPos.length;i++) O$N;a9g { ;.^!
7j nStartPos = (long)(i*(nFileLength/nStartPos.length)); DXQ]b)y+N } c}s#!|E0v for(int i=0;i<nEndPos.length-1;i++) *=tA },`\7 { y6Ez.$M nEndPos = nStartPos[i+1]; LW#U+bv]Dq } @bChJl4 nEndPos[nEndPos.length-1] = nFileLength; v +o6ZNX } dnV&U%fO } y`z4S, ,L4zhhl!_ Yhjv[ 9 //启动子线程 (?ULp{VPFl fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ^]Q.V for(int i=0;i<nStartPos.length;i++) FjMKb { ev4_}! fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]wfY<Z siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 9_8\xLk nStartPos,nEndPos,i); 85$ WH Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ZXXJ!9-&+J fileSplitterFetch.start(); ]Inu'p\ } ryqu2>(
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), qJ2Z5 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 'Ydr_Ses // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 1 ^30]2'_ nEndPos = " + nFileLength); +3sbpl2} // fileSplitterFetch[nPos.length-1].start(); s3 fQGbU A8-a}0Gh N1$PW~)Y //等待子线程结束 1K(mdL{m5 //int count = 0; Zrj#4E1 //是否结束while循环 0|C !n+OK boolean breakWhile = false; %m
[l/,2x bdfs'udt9 ?uU_N$x while(!bStop) %dzO*/8cWo { EPR85[k write_nPos(); [Jj@A(Cz Utility.sleep(500); $$EEhy breakWhile = true; 1OqVV?oz o+)y! <L<^uFB for(int i=0;i<nStartPos.length;i++) u /DE { q*tGlM@R? if(!fileSplitterFetch.bDownOver) Ep:hObWG) { Bs|Xq'1M!; breakWhile = false; 6J@,bB
jVz break; A&M(a } (nXnP{yb } B/o8r4[80 if(breakWhile) C+"c^9[ break; HF"TS* 8aKS=(Z!j o7WAH@g //count++; !"&-k:|g //if(count>4) bC98<if // siteStop(); =qpGAv_# } |=KzQY|u f=VlO d 6 EfBz System.err.println("文件下载结束!"); fK *l?Hr } s:_a.4&Y catch(Exception e){e.printStackTrace ();} g$zGiqzMK } '.<c[Mp cd=|P?Bi g'{?j~g //获得文件长度 fD3'Ye<R public long getFileSize() ^,FG9 { z] -m<#1 int nFileLength = -1; <&2<>*/.y try{ ww[||
= URL url = new URL(siteInfoBean.getSSiteURL()); #XB3Wden2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); TU58 httpConnection.setRequestProperty("User-Agent","NetFox"); gK@`0/k{ Hc[@c)DH ;yyR_NS int responseCode=httpConnection.getResponseCode(); +\;Ro18? if(responseCode>=400) W7gY$\1<& { {QaO\{J= processErrorCode(responseCode); 4;
0#Z^p return -2; //-2 represent access is error [\Nmm4 } 4]$OO' K=E+QvSG H9i7y,[* String sHeader; 5j$&Zgx51 iSR"$H{ BFhEDkk for(int i=1;;i++) nB5\ocJ { \13Q >iAu //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *3!r &iY //Utility.log(in.readLine()); w!v^6[! sHeader=httpConnection.getHeaderFieldKey(i); <2L,+ if(sHeader!=null) %{pjC7j# { fA]sPh4Uag if(sHeader.equals("Content-Length")) 023uAaI^3r { ~d1=_p:~T nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); x X[WX#'f break; L N.:>, } 6xwjKh:9 } e$WAf`* else 6({)O1Z break; Nnr[@^M5 } "Nb2[R } Y
.cjEeL@ catch(IOException e){e.printStackTrace ();} 6 C
O5:\ catch(Exception e){e.printStackTrace ();} 9nY|S{L B$YoglEW: -mGG:#yP Utility.log(nFileLength); 'DNxc IVZUB*wv)b @$ Nti> return nFileLength; <8Tp]1z } d>W#c8X> 5Phsh q
}>3NCh //保存下载信息(文件指针位置) S.B?l_d^ private void write_nPos() nM:<l}~v{ { U`8Er48X try{ mMOgx output = new DataOutputStream(new FileOutputStream(tmpFile)); XP0;Q;WF} output.writeInt(nStartPos.length); rQGInzYp for(int i=0;i<nStartPos.length;i++) i+in?!@G: { !Q_Wbu\U // output.writeLong(nPos); q
:~/2<o output.writeLong(fileSplitterFetch.nStartPos); je2"D7D output.writeLong(fileSplitterFetch.nEndPos); K]Vp! G } )=X g output.close(); W)J5[p? } P0(LdZH6u catch(IOException e){e.printStackTrace ();} [tJn!cMs catch(Exception e){e.printStackTrace ();} tU2#Z=a } 'J-a2oiM( #NGtba On~KTt3Mp //读取保存的下载信息(文件指针位置) WcS`T?Xa private void read_nPos() d4ld-y { tKcC{ try{ }CMGK{ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); K1A<m=If int nCount = input.readInt(); tP*GYWI48 nStartPos = new long[nCount]; <2%9O;bV[ nEndPos = new long[nCount]; dlCiqY:} for(int i=0;i<nStartPos.length;i++) D29Lu(f
{ `''y,{Fs nStartPos = input.readLong(); "4Q_F3?_` nEndPos = input.readLong(); UcD<vg"p } Ayg^<)JWh input.close(); #Y3-P } b=\chCRJJ catch(IOException e){e.printStackTrace ();} WQ8 "Jj?k6 catch(Exception e){e.printStackTrace ();} WFV'^-4 } *` wz ,%N[FZ`| xP9h$! private void processErrorCode(int nErrorCode) febn?|@ { u/S>*E System.err.println("Error Code : " + nErrorCode); w xte } |[mmEYc <%%)C>l d0ht*b //停止文件下载 !X$19" public void siteStop() H
lM7^3(& { ~Js kA5h|& bStop = true; mVYfyLZ,( for(int i=0;i<nStartPos.length;i++) R"JXWw fileSplitterFetch.splitterStop(); 3@ Fa Y@#N_]oXj trrK6(p } BY[7`@ } t2OBVzK //负责部分文件的抓取 ok:L]8UN3 **FileSplitterFetch.java B0)|sH */ EirZ}fDJzB package NetFox; #}@8(>T 8q{|nH L[D+= import java.io.*; {~FPvmj& import java.net.*; k+?gWZ\ GiM-8y~ 7%? bl public class FileSplitterFetch extends Thread { FvPWS!H N[\J#x!U czu9a"M>X String sURL; //File URL -ZSN0Xk long nStartPos; //File Snippet Start Position N6u>V~i long nEndPos; //File Snippet End Position S2Ez}*plp int nThreadID; //Thread's ID ,.V<rDwN& boolean bDownOver = false; //Downing is over ] dJ"_ boolean bStop = false; //Stop identical tA< UkPT FileAccessI fileAccessI = null; //File Access interface kqj)&0|X F:P2:s<d- Fp@> (M#3 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException F7*)u-4Yn { tN\I2wm this.sURL = sURL; o@.{|j this.nStartPos = nStart; w}OBp^V^ this.nEndPos = nEnd; cUG^^3! nThreadID = id; l=l$9H, fileAccessI = new FileAccessI(sName,nStartPos);//定位 6s~B2t:Y } dm=?o ercXw7{ LS9,:!$ public void run() I}|a7,8 { DW9MX`!Xc while(nStartPos < nEndPos && !bStop) 'm6bfS^T { Lp(`m=;O C,eP!_O Nr$78] o9 try{ !DSm[Z1 URL url = new URL(sURL); 82EvlmD HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Z#Nw[>NN* httpConnection.setRequestProperty("User-Agent","NetFox"); 1Hr1Ir<KR String sProperty = "bytes="+nStartPos+"-"; 7rRI-wZ httpConnection.setRequestProperty("RANGE",sProperty); f"j9C%'* Utility.log(sProperty); ]*mUc` Udtz zka ElB[k< InputStream input = httpConnection.getInputStream(); ]N'%l]_$ //logResponseHead(httpConnection); m3pDFI W3>9GY90R ]jVE byte[] b = new byte[1024]; xl,%
Z~[ int nRead; 2P8wvNDG while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) w5PscEc { %(khE-SW nStartPos += fileAccessI.write(b,0,nRead); P)f8lU^z //if(nThreadID == 1) g&F$hm // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Y
?n4#J< } d
([~o yc3/5]E& )}N:t:rry Utility.log("Thread " + nThreadID + " is over!"); vw3[(_MV3_ bDownOver = true; [fT$# '6 //nPos = fileAccessI.write (b,0,nRead); JZxA:dg
l } y3 N[F catch(Exception e){e.printStackTrace ();} E8#aE\'t } ~!5Qb{^ } H9ES|ZJs "~ $i# ZpOME@9, //打印回应的头信息 LkzA_|8:D public void logResponseHead(HttpURLConnection con) e>e${\=, { XK/l1E3N for(int i=1;;i++) j;y(to-e>D { u4xtlGt5 String header=con.getHeaderFieldKey(i); )mwwceN if(header!=null) zw+wq+2" //responseHeaders.put(header,httpConnection.getHeaderField(header)); Hqs-q4G$ Utility.log(header+" : "+con.getHeaderField(header)); gAztdAsLM else P,)D0i break; ey[Z<i1 } >M{98NH } l]wLQqoO %regt{ F4T!&E%6 public void splitterStop() N]/cBGy { Km=
Y^x0 bStop = true; )b]wpEFl } =,N"% } Ekq( sBI/`dGZV } qQDe'f~ 965 x_
% svEe@Kt` /* ?32~%?m **FileAccess.java Myg;2 . *//文件访问(定位,写) *`w>\},su package NetFox; m`8{arz2 import java.io.*; J>T98y/)) nZ'jj S[! Nk\ni>Du3 public class FileAccessI implements Serializable{ ,ps?@lD /"A=Yf //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ai?J RandomAccessFile oSavedFile; 2Ul8<${c{ long nPos; EHf,VIC8 V~/@KU8cH 4V,p\$; public FileAccessI() throws IOException k -R"e { H6K8. this("",0); mUP!jTF } ju[y-am$/ "wZvr}xk 4FYV]p8f public FileAccessI(String sName,long nPos) throws IOException [c1Gq)ht { pl@K"PRE oSavedFile = new RandomAccessFile(sName,"rw"); R8lja%+0$ this.nPos = nPos; ?d?.&nt oSavedFile.seek(nPos); .J @mpJdY } ~ PyS;L} Wm"#"l4 ALF21e*n public synchronized int write(byte[] b,int nStart,int nLen) 9Ca0Tu { tpA-IL?KQw int n = -1; ~Y~M}4 try{ aizws[C oSavedFile.write(b,nStart,nLen); }[!=O+gO n = nLen; 0%&}w UjV } )XSHKPTQ1 catch(IOException e) (c}!gjm { yLCMu | + e.printStackTrace (); X0j> g^b8 } W(ryL_#; ,jz~Np_2 ~V ?z!3r-) return n; ]CcRI|g} } _\k?uUo&,^ ;!
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H;, ^.@%n1I"5y MRo_An+ /* j`@`M*)GB **SiteInfoBean.java q!U$\Q& */ 5cA:;{z];g package NetFox; GL9'dL| d#d&CJAfr lcpiCZ public class SiteInfoBean { Z VdQ$ a"O;DYh p]y.N)a private String sSiteURL; //Site's URL SfY 5Xgp private String sFilePath; //Saved File's Path G,<d;: private String sFileName; //Saved File's Name oBub]<.J private int nSplitter; //Count of Splited Downloading File {)b #d[Nm+~ko & uwOyb public SiteInfoBean() VR"le&'z" {//nSplitter的缺省值为5 \X(*JNQ //default value of nSplitter is 5 SzeY?04zj: this("","","",5); zXlerQWUv } jbZTlG I~~":~& )
5Ij public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) $E; Tj|W { ydY(*] sSiteURL= sURL; \@h$|nb sFilePath = sPath; nLk`W"irM sFileName = sName; 6/g
82kqpk this.nSplitter = nSpiltter; e&!c8\F 8#,_%<?UVy Au)~"N~p? } `wj' R64f0NK. 6Xo "?f public String getSSiteURL() 1K|F;p { x{ `{j' return sSiteURL; 3]}RjOTU } M?('VOy) .C+(E@ey A P =Q+VIP& public void setSSiteURL(String value) ^gyI-S(; { BaP'y8dVN sSiteURL = value; tG9C(D`G } &F7_0iAP( =)jo}MB }|8^+V& public String getSFilePath() 6~{'\Z { 6q`)%"4k return sFilePath; yXEI%2~) } Q qj9o2 >e-0A w9"~NK8xzM public void setSFilePath(String value) ;{R;lF, { jHHCJOHB8 sFilePath = value; OA}; pQ9QN } Ke:EL;*8k qvWi; eYkg4 O' public String getSFileName() 5"1wz { _e8v12s return sFileName; Hc|cA(9sh9 } )OQ<H.X ?0sTx6x@ GCr]x ' public void setSFileName(String value) n?D/bX p { 6,~1^g* sFileName = value; 7l*vmF6Z } Q;q{1M > hG<[F@d -nUK%a"(D public int getNSplitter() b-@9Xjv { Lq.2vfA> return nSplitter; 14uv[z6 } f2Xn !]o ~@@$-,}X @6R6.i5d public void setNSplitter(int nCount) p9\*n5{ { <|G!Qn?2- nSplitter = nCount; {w"Cr0F, } }$uwAevP{y } `0_
Y| 4KB >mMfZvxl% Vom,^`} /* l(F\5Ys **Utility.java #
&5. */ \3K7)o^ package NetFox; GA[bo)" c3#eL QKVOc,Fp7i public class Utility { <u#
7K\: @ %q>Jd ve.P{;;Ky public Utility() c\ZnGI\| { Ml?KnSb S&[9Vb glROT@ } ij3W8i9' ^liW*F"UY //线程睡眠 L+@X]OW8 public static void sleep(int nSecond) P&:[pPG { =^{MyR7 try{ DNqC*IvuzM Thread.sleep(nSecond); p__N6a } rL+.3ZO):P catch(Exception e) {
JDD"z { H~Uy/22aQy e.printStackTrace (); (LXYx< } fshG ~L7S9 } HKO]_; :( y
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I9"R //日志 /S~ =qodS public static void log(String sMsg) =h
~n5wQG { bd27])n( System.err.println(sMsg); 1Q9Hs(s } JqYa~6 C >YF=6zq.` 8uW%jG3/ public static void log(int sMsg) 2_M+o]Z^ { }o[<1+W(. System.err.println(sMsg); q j9q } 61gyx6v } DYgB_Iak uT<<G)v) 9^Web~yi# /* MI:%Eq **TestMethod.java d`5AQfL& */ ~MYE8xrId package NetFox; 9~a 5R]x2
P-8QXDdr LH`2Y,E public class TestMethod { nf&5oE^ $o$WFV+h /<k5"C%z public TestMethod() %Kp^wf#o9 { ///xx/weblogic60b2_win.exe :kwDa
a try{ E
GZiWBr SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); kFyp;=d:K //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Lg#(?tMp,' SiteFileFetch fileFetch = new SiteFileFetch(bean); {7%HK2=' fileFetch.start(); \\Q){\S } 3=Rk(%:; catch(Exception e){e.printStackTrace ();} 5e7\tBab Q%J,:J S}]B |Q } OZ"76|H1` !g=b=YK s&$e}yxVO public static void main(String[] args) Zv-1*hhHf { 0E
(G1o' new TestMethod(); !)W#|sys& } ]Ge>S?u } ryA+Lli. 点击下载更多相关资料
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