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/* emW:C-/h/@ **SiteFileFetch.java _|''{kj( */ i7LJ&g/) package NetFox; 9RwawTM import java.io.*; U'*t~x< import java.net.*; -ti{6:H8 s[Ur~Wvn #pHs@uvO public class SiteFileFetch extends Thread { R3X{:1{j sFDG) vJ`.iRU| SiteInfoBean siteInfoBean = null; //文件信息Bean >b.^kc long[] nStartPos; //开始位置 KL'zXkS long[] nEndPos; //结束位置 q_Lo3|t i FileSplitterFetch[] fileSplitterFetch; //子线程对象 C}5M;|%3) long nFileLength; //文件长度 $c&0F, boolean bFirst = true; //是否第一次取文件 G9g6.8*& boolean bStop = false; //停止标志 UMN*]_'+;b File tmpFile; //文件下载的临时信息 19q{6X`x DataOutputStream output; //输出到文件的输出流 bY~@}gC**@ 3I 0eW%, //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) q*)+K9LRk public SiteFileFetch(SiteInfoBean bean) throws IOException _DP|-bp D { c6Q(Ygc
siteInfoBean = bean; NV r0M?`4 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ]+H?@*b` tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); {0YAzZ7 if(tmpFile.exists ()) b.2J]6G
{ sn{A wF% bFirst = false; =22ALlxk read_nPos(); P6U%=xaC } /b,TpuM^ else $WW)bP
d4^ { r(2R<A nStartPos = new long[bean.getNSplitter()]; P|jF6?C nEndPos = new long[bean.getNSplitter()]; xeTgV&$@ } 9x`4RE "zZI S6j m|svQ-/j 4-v6=gz. } $-w5o`e rv?!y8\ m"-G6BKS public void run() dzxI QlP { |#cAsf_{ //获得文件长度 @ta?&Qf) //分割文件 MOLO3?H( //实例FileSplitterFetch -kc(u1! //启动FileSplitterFetch线程 1"$R 3@s; //等待子线程返回 q
u:To7 try{ I{<;;;a if(bFirst) 2[BA(B { 3k{c$x} nFileLength = getFileSize(); *+~D+_, if(nFileLength == -1) x@ 6\Ob { ) MBS System.err.println("File Length is not known!"); \^m.dIPdO } ?'f^X$aS else if(nFileLength == -2) Gt5$6>A { r./z,4A` System.err.println("File is not access!");
wQw-:f- } k -]xSKG else <O
bH f`Q { r_=p,#}# for(int i=0;i<nStartPos.length;i++) )(.%QSA\C { ^#7viZ* nStartPos = (long)(i*(nFileLength/nStartPos.length)); b.,$# D{p } 'ucGt for(int i=0;i<nEndPos.length-1;i++) b_l.QKk { uegb;m nEndPos = nStartPos[i+1]; =<>pKQ)[ } Z]p8IH%~92 nEndPos[nEndPos.length-1] = nFileLength; Q~h6J* } N[]U%9[=2F } pB[%:w/@l: 2!{N[*) tw]/,>\G //启动子线程
a2[8wv1 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; U* 4{" for(int i=0;i<nStartPos.length;i++) u8xk]:% { yI lV[_ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), v<%]XHN siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 17|@f nStartPos,nEndPos,i); BjwMb&a; Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 7<fL[2- fileSplitterFetch.start(); 6/VNuQ_# } Ko]QCLL // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >@z d\}@W siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); #i@ACAgn;6 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Th_Q
owk nEndPos = " + nFileLength); *ZX!EjICk // fileSplitterFetch[nPos.length-1].start(); dEL3?-;' TLXhE(o|o 7:# //等待子线程结束 jGJ.Pvc>i //int count = 0; 2\DTJ`Y, //是否结束while循环 zUNH8=U boolean breakWhile = false; r(pwOOx 5XI;<^n2 x GwTk while(!bStop) VjC*(6<Gj { .@fK;/OuC write_nPos(); };i&a%I| Utility.sleep(500); z7|
s%& breakWhile = true; P\Ai|"=&] m*\B2\2gJ Cc@=? for(int i=0;i<nStartPos.length;i++) =U=e?AOG2 { 83\o( if(!fileSplitterFetch.bDownOver) bl$+8!~ { 71JM
[2 breakWhile = false; lv=yz\ break; BhOXXa{B } @47[vhE } tZdwy> ; if(breakWhile) AD~~e%
s= break; 9Q,Msl4n zJz82jMm -q'xC: m //count++;
pESB Il //if(count>4) LDT'FwMjy // siteStop(); XRClBTKF } GI.=\s E!rgR5Bd v$JhC' System.err.println("文件下载结束!"); =sFLzAu8 } =CqZ $ catch(Exception e){e.printStackTrace ();} (?W[#.=7 } 7iijATc SW; %2 zt3y5'Nk //获得文件长度 HzdyfZ!jR public long getFileSize() n,l{1 q { hO?RsYJ.F int nFileLength = -1; S!oG|%VuB# try{ .$]%gjIBCl URL url = new URL(siteInfoBean.getSSiteURL()); d(t$riFX} HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2N/4. httpConnection.setRequestProperty("User-Agent","NetFox"); HAca'!p m ,|)$R K (!+l int responseCode=httpConnection.getResponseCode(); 0D.qc8/V4. if(responseCode>=400) bf*VY&S-T { #)7THx/= processErrorCode(responseCode); \2U F J return -2; //-2 represent access is error FG@ ')N!g } r@)_>( t gpg ~jOn)jBRZ String sHeader; ~k[mowz0 OF_g0Zu zQ>|`0&8 for(int i=1;;i++) rAwuWM@BIg { YEiQ`sYKG //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); !kG 2$/lR //Utility.log(in.readLine()); QKVFH:"3 sHeader=httpConnection.getHeaderFieldKey(i); GB&^<@ if(sHeader!=null) !M*$pQi} { xZc].l6 if(sHeader.equals("Content-Length")) WETnrA"N { W+5<=jXFB nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); xC}9W6 break; c7R<5f } r&0IhE } I|eYeJ3 else E/5/5'gBJO break; ymo]. } Wm#F~<$ } 8H7=vk+ catch(IOException e){e.printStackTrace ();} w;=g$Bn catch(Exception e){e.printStackTrace ();} [,?5}'we *+rWn*L _7=LSf,9 Utility.log(nFileLength); tOT(!yz @en*JxIM *MD\YFXR return nFileLength; k[<Uxh% } -:~"c@D [==x4Nb )z=L^ot //保存下载信息(文件指针位置) <Y"h2#M " private void write_nPos() t,,W{M|E( { !U[/P6
+0 try{ d,+a}eTP' output = new DataOutputStream(new FileOutputStream(tmpFile)); HpGI\s output.writeInt(nStartPos.length); 7%)KB4(\_ for(int i=0;i<nStartPos.length;i++) @{LD_>R { e,8[fp-7 // output.writeLong(nPos); bg/a5$t
output.writeLong(fileSplitterFetch.nStartPos); "fN=Y$G output.writeLong(fileSplitterFetch.nEndPos); \\iX9-aI< } x3tos!Y output.close(); ,C;%AS/ } dW#T1mB catch(IOException e){e.printStackTrace ();} 5e|yW0o catch(Exception e){e.printStackTrace ();} =tQ^t4_ } Mv_-JE9#>o ttfCiP$ S!6 ? b5 //读取保存的下载信息(文件指针位置) H7?Sd(U private void read_nPos() PW QRy { #dhce0m try{ ^SvGSxi DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); /L^pU-}Z0 int nCount = input.readInt(); k^Qd%;bdF nStartPos = new long[nCount]; U-:"Wx%G nEndPos = new long[nCount]; -I'Jm=q3] for(int i=0;i<nStartPos.length;i++) \PL0-.t, { }/J<#}t nStartPos = input.readLong(); mbZn[D_zi nEndPos = input.readLong(); 5iZx
-M } 8{DW$ZtR input.close(); *|({(aZ } 2e^6Od!Y? catch(IOException e){e.printStackTrace ();} vf0
fa46 catch(Exception e){e.printStackTrace ();} b"pN; v } +.
tcEbFL {&uN q^Ch 2ut)m\)/) private void processErrorCode(int nErrorCode) RXw }Tb/D8 { 4L<;z' System.err.println("Error Code : " + nErrorCode); ?%ei+ } ( q}{; ,Q,3^v- @B9O*x+n: //停止文件下载 63HtZ=hO7 public void siteStop() -7u_ \XFk { KMP[Ledr bStop = true; hka`STK{ for(int i=0;i<nStartPos.length;i++) k2:mIp\ fileSplitterFetch.splitterStop(); zb. ^p
X CF]#0*MI Z)!#+m83>- } xp%LXxj } iD)P6" //负责部分文件的抓取 R47tg&k6[ **FileSplitterFetch.java >uR;^ B5m */ tvOyT6 ] package NetFox; d;v<rw 9)J)r\ paZcTC import java.io.*; C]M{ import java.net.*; ~}g)N
,+!|~1 j$Vtd& public class FileSplitterFetch extends Thread { \OVw UQO?hZ!y/. PJ2m4ulY String sURL; //File URL TlpQ9T long nStartPos; //File Snippet Start Position !yu-MpeG long nEndPos; //File Snippet End Position 7'RU\0QG int nThreadID; //Thread's ID \:>eZl? boolean bDownOver = false; //Downing is over uO4R5F|tL boolean bStop = false; //Stop identical 9&Ny;oy#6 FileAccessI fileAccessI = null; //File Access interface $: qrh66 dF'oZQz F32U;fp3 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException `q+Ug { /JmWiBQIn this.sURL = sURL; #Kt5+"+7 this.nStartPos = nStart; 3$PGLM this.nEndPos = nEnd; ]]/p.#oD, nThreadID = id; UB7C,:" fileAccessI = new FileAccessI(sName,nStartPos);//定位 Q#}c5TjVr } 2YpJ4. =z9FjK I ka
V g L public void run() .1h1J { m-R`( while(nStartPos < nEndPos && !bStop) O>>%lr| { <v$yXA iQz
c$y^,9 J#Agk^Y 5 try{ 1VB{dgr URL url = new URL(sURL); ^\FOMGai HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); dgW/5g httpConnection.setRequestProperty("User-Agent","NetFox"); zN>tSdNkI- String sProperty = "bytes="+nStartPos+"-"; no8FSqLUS~ httpConnection.setRequestProperty("RANGE",sProperty); y-vQ4G5F| Utility.log(sProperty); <26Jif: RaAvPIJa | Kr74|W= InputStream input = httpConnection.getInputStream(); rM)-$dZ //logResponseHead(httpConnection); tkf^sGgNO ="s>lI-1a ~4u[\&Sh byte[] b = new byte[1024]; 6" |+\ int nRead; )X5en=[)O while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) v9l|MI15V { {WN??eys, nStartPos += fileAccessI.write(b,0,nRead); t"FB}%G //if(nThreadID == 1) VB@M=ShKK // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); A9ru]|? } @1+({u#B $s!2D"wl n Lb%:u5X\D@ Utility.log("Thread " + nThreadID + " is over!"); zn/b\X/ bDownOver = true; PVX23y; //nPos = fileAccessI.write (b,0,nRead); 9vJ'9Z2\ } 'Y:ZWac, catch(Exception e){e.printStackTrace ();} j$}W%ibj } p|VgtQ/)% } 992cy2,Fb .dl4f"k hT[w" &3 //打印回应的头信息 ^y3snuLtE public void logResponseHead(HttpURLConnection con) F;<cG`|Rx { ljw>[wNv for(int i=1;;i++) h . R bdG { 1bpjj'2%x String header=con.getHeaderFieldKey(i); E:S (v if(header!=null) ("ulL5 //responseHeaders.put(header,httpConnection.getHeaderField(header)); t.= 1<Ed Utility.log(header+" : "+con.getHeaderField(header)); z.] else fv?vfI+m break; GHR,KB7 xM } e$=0.GWT } 7~7_T#dTh yfCdK-9+B Q:sw*7"F public void splitterStop() V~_aM@q1 { q8P$Md-=b1 bStop = true; =U_O;NC } e BxOa DW.vu%j^[ pZO`18z } ,pMH` H3qM8_GUA w8> /* 9|9Hk1 **FileAccess.java fC^POLn[f *//文件访问(定位,写) `dK%I
U package NetFox; '}.Z' %; import java.io.*; cR"?EQ] `N k^v P|*eu E4dN,^_ F! public class FileAccessI implements Serializable{ S1oP_A[| !e0~|8 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 gdkQ
h_\ RandomAccessFile oSavedFile; 2#?qey long nPos; <u%&@G$F> j65qIw_Z O0Sk?uJ< public FileAccessI() throws IOException
*aT\V64 { UjrML this("",0); i$:QOMA } |H7f@b]Sk cas5
>^q7:x\ public FileAccessI(String sName,long nPos) throws IOException SWrP0Qjc { cczV}m2) oSavedFile = new RandomAccessFile(sName,"rw"); V'jvI this.nPos = nPos; ygn]f*;?kw oSavedFile.seek(nPos); ,U^V]jC } >p;cbp[ht Wz]ny3K[. cgevP`*] public synchronized int write(byte[] b,int nStart,int nLen) ^a+H`RD { C}>Pn{wY9 int n = -1; ql_GN[c/ try{ zEYT,l oSavedFile.write(b,nStart,nLen); "{F e n = nLen; EmO{lCENk } mM6X0aM catch(IOException e) 'ZboLoS*- { ltH?Ew<] e.printStackTrace (); ]> dCt< } e0; KmQjG :497]c3#5C ;#jE??E/: return n; v@^P4cu; } PUJkC y6C3u5` O h{>xg } 8+yCP_Y4 ^vA"3Ixb! (o5^@aDr /* EFqYEDXW **SiteInfoBean.java Z\9DtvV */ 0
P]+/ package NetFox; R@[gkj 8,^2'dK34 EO:
VH public class SiteInfoBean { z +NwGVk3 E[8R
)xC@ rOyKugHe private String sSiteURL; //Site's URL <T|?`;K private String sFilePath; //Saved File's Path e*?@6E private String sFileName; //Saved File's Name A0f98?j^ private int nSplitter; //Count of Splited Downloading File ;?K>dWf3f :*6#(MX 3 J!J# public SiteInfoBean() ^0fe:ac; {//nSplitter的缺省值为5 N" =$S|Gs //default value of nSplitter is 5 \lBY4j+; this("","","",5); % r>v^1Vo } vkgAI< >o_cf*nx zHu w[ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) lv=rL { n=8DC& sSiteURL= sURL; li7"{+ct sFilePath = sPath; $FM:8^ sFileName = sName; ~M?^T$5 this.nSplitter = nSpiltter; D]StDOmM NB=!1;^J Bl1^\[# } *< ?~ Hph$Z1{ C=zc6C, public String getSSiteURL() Vu1swq)l { cI/Puh^3 return sSiteURL; L2}p<?f } tB/'3#o g* DBW, ;cD&qheDV public void setSSiteURL(String value) 9tBE=L= { d:{#Dk# sSiteURL = value; f C_H0h3 } t}x^*I$* |:b!e 8=Aoj%l# public String getSFilePath() FL?Ndy"I { #y>q)Ph return sFilePath; ]7:*A7/!. } + )lkHv$R v~`'!N8 ,%4~ulKMn public void setSFilePath(String value) *DS>#x@3*i { gl>%ADOB@ sFilePath = value; t^5xq8w8 } 8;GuJP\ E*G{V j Lxqv public String getSFileName() Q8?:L<A { >#EOCo return sFileName; (_Ky'. } HBiUp$(mB ka?EXF: TJ+,G4z public void setSFileName(String value) IEeh9:Km { rPXy(d1<`S sFileName = value; Qoom[@$ } pZV=Co3!I cZl/8?dj} @l
%x;`E public int getNSplitter() E9~}%& { klxNGxWAX return nSplitter; \Jm^XXgS } #CTeZ/g n1PV/ Z ~tB#Q6`nB public void setNSplitter(int nCount) Un^3%=; { )=5,S~IT nSplitter = nCount; `g^b Qx } .
l-eJ } D V=xqC6} {2T;^+KE Qa@]
sWcM /* i(an]%'v **Utility.java kJk6lPSqi7 */ b/6!>qMMk% package NetFox; v!6IH &at>sQ' Rg\D-F6: public class Utility { 2f0qfF fp?cb2'7 N-YCOSUu public Utility() Ngw/H)<c { kj/v$m !~fy".|x ,lb > } 5j>olz=n} <RJ+f- //线程睡眠 l
dw!G/ public static void sleep(int nSecond) ykD-L^} { "5b4fQ;x try{ qc"PTv0q Thread.sleep(nSecond); bmI6OIWl } \%Lj !\ catch(Exception e) %6cbHH { ;X%8I$Ba, e.printStackTrace (); t-?#x
} h{VdW}g } Xz\ X 8I {Y1&GO; //日志 35n'sVn public static void log(String sMsg) }.N~jx0R { ~*hCTqHvN System.err.println(sMsg); U$Od) } L|Bjw3K&D L!0}&i;u~5 Tl L\&n.$ public static void log(int sMsg) K96N{"{iI% { :Ny^-4-N System.err.println(sMsg); UY^TTRrH } =k##*% } vY);7 z yrjb8 cQrXrij;! /* I|.
< **TestMethod.java hr`,s!0Y */ =+w/t9I[ package NetFox; cf%aOHYI* V?"1&m&E 7[:?VXQ public class TestMethod { F0ylJ
/E 2[i(XG{/ cK\'D public TestMethod() -FQc_k?VF { ///xx/weblogic60b2_win.exe
+Ou<-EQV try{ TUq
, SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); qJ[wVNHh! //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ~toR)=Yv SiteFileFetch fileFetch = new SiteFileFetch(bean); A9y@v{txN fileFetch.start(); J~)JsAXAI } 7ea%mg\ catch(Exception e){e.printStackTrace ();} T[kS;-x Q}|0 TGuCIc0B{ } 85BB{T; q@i.4>x 8=u88?Bh public static void main(String[] args) J|CCTXT { lcXo> new TestMethod(); j-zWckT{ } z`sW5K(A } r=# v@]zB 点击下载更多相关资料
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