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/* S>;+zVF] **SiteFileFetch.java 8Xx4W^*_ */ EN/r{Cm$B package NetFox; mhW*rH*m import java.io.*; i TLX=.M import java.net.*; ncdj/C #t< S.R|Bwj}(Y public class SiteFileFetch extends Thread {
}'WEqNuE sL4j@Lt xRbtiFk9H SiteInfoBean siteInfoBean = null; //文件信息Bean yN{TcX long[] nStartPos; //开始位置 Csf!I@}Z long[] nEndPos; //结束位置 _~.S~;o!b FileSplitterFetch[] fileSplitterFetch; //子线程对象 vX}#wDNP long nFileLength; //文件长度 <^(>o boolean bFirst = true; //是否第一次取文件 &HB!6T/ boolean bStop = false; //停止标志 tRVz4fk[G File tmpFile; //文件下载的临时信息 lnQY_~s DataOutputStream output; //输出到文件的输出流
IBYSI0 1"S~#
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) P^^WViVX public SiteFileFetch(SiteInfoBean bean) throws IOException Y+nk:9 { ' '<3;
siteInfoBean = bean; jT*?Z:U //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); L/xTW tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); NiBly if(tmpFile.exists ()) 0q o]nw { ;iO5
8S3 bFirst = false; k*K.ZS688 read_nPos(); JXQh$hs } HlOn=>)< else +!cibTQTT { 1b,MJ~g$ nStartPos = new long[bean.getNSplitter()]; 2#Du5d nEndPos = new long[bean.getNSplitter()]; NCivh&HR } !:3X{)4 V.}3d,Em%] fk2p} L>&9+<-B } +}x\|O O39f |ngv{g public void run() fL~@v-l#~ { !g4u<7 //获得文件长度 0b}.!k9 //分割文件 *h
M5pw //实例FileSplitterFetch _)ZxD--Qg //启动FileSplitterFetch线程 5S
4Bz //等待子线程返回 VQ8Q=!] try{ 9xOTR#B:_V if(bFirst) Kh7C7[& { Zg$RiQ^-{J nFileLength = getFileSize(); \p#_D|s/Ep if(nFileLength == -1) ~oz??SX { 3c+ps;nh System.err.println("File Length is not known!"); Ejj+%)n. } QxT\_Nej*n else if(nFileLength == -2) oVQbc\P3 { >';UF;\5]Q System.err.println("File is not access!"); 9`tSg!YOh } +1nzyD_E else W
H%EC$ { GL,( N| for(int i=0;i<nStartPos.length;i++) e=`=7H4P { "t%Jj89a\ nStartPos = (long)(i*(nFileLength/nStartPos.length)); !3)WW)"!r } t!\B6!Fo for(int i=0;i<nEndPos.length-1;i++) &3 *#h { ?N=`}}Ky- nEndPos = nStartPos[i+1]; ;r}yeISf } R(f6uO!m nEndPos[nEndPos.length-1] = nFileLength; @?*;
-]#) } RMHJI6?LB } e2kW,JV/<$ g(dReC ej,R:}C%` //启动子线程 ;)q"X>FMZe fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; -8yN6
0| for(int i=0;i<nStartPos.length;i++) (_=R<: { {uurLEe? fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3.6Gh|7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), JPM~tp?;< nStartPos,nEndPos,i); :!wl/X
~ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *tfD^nctO fileSplitterFetch.start(); _R}yZ=di } Lk.tEuj=82 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 3F32 /_` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); OMAvJzK . // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", $r)NL nEndPos = " + nFileLength); p8j*m~4B // fileSplitterFetch[nPos.length-1].start(); Muyi2F)j o37D~V; 0YAH[YF //等待子线程结束 C!U$<_I\2 //int count = 0; >D% //是否结束while循环 F+!9T boolean breakWhile = false; aU*}.{<!
N@X(YlO hdwF; while(!bStop) &WZ&Tt/)/ { z"-oD*ICw write_nPos(); h@dy}Id Utility.sleep(500); tLcw?aB breakWhile = true; j/;wxKW ]f>0P3O5& EHK+qrym for(int i=0;i<nStartPos.length;i++) :LCyxLI { [\rzXE if(!fileSplitterFetch.bDownOver) *U-:2uf { C;~LY&= breakWhile = false; B!U;a=ia break; l{*Ko~g } e,MgR \F} } tX6_n%/L if(breakWhile) qWJHb Dd break; V''fmWo7 / ;+Mz* U4qk<! //count++; R_b4S%jhx //if(count>4) b!r%4Ah // siteStop(); qkqtPbQ 7 } c
Qe3 A4(k<<xjE w
c System.err.println("文件下载结束!"); Eihy|p } "]|7%] catch(Exception e){e.printStackTrace ();} }R/we` } p`EgMzVO, 2#ZqGf.'v Bo\~PV[ //获得文件长度 8tVSai8[ public long getFileSize() }rUAYr~V Z { #8~ygEa} int nFileLength = -1; KTBtLUH]*F try{ 9bhubx\^/ URL url = new URL(siteInfoBean.getSSiteURL()); (\o4 c0UzK HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 5H1N]v+ httpConnection.setRequestProperty("User-Agent","NetFox"); _l+C0lQl= tEt46]{ w OOu/Y int responseCode=httpConnection.getResponseCode(); P-<1vfThH if(responseCode>=400) t+K1ArQc { : ^U>n{ processErrorCode(responseCode); y06xl:iQwF return -2; //-2 represent access is error OQB7C0+ & } OM&GypP6& 4d4+%5GE ]2qKc String sHeader; M?%x=q\< !Kg']4 ?\, ^>4x? for(int i=1;;i++) [i ~qVn2vT { ?zm]KxIC //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); lYJSg70P //Utility.log(in.readLine()); u"*DI=pwb sHeader=httpConnection.getHeaderFieldKey(i); Wu/#}Bw# if(sHeader!=null) l[ $bn!_e { &
rab,I" if(sHeader.equals("Content-Length")) 1VlU'qY { ZDbe]9#Xh nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Q]/%Y[%| break; QR'# ]k;>% } w"s@q$}]8M } 60u_,@rV else #xw*;hW< break; !LwHKCj } ~Q]5g7k=& } ~<n.5q%Z catch(IOException e){e.printStackTrace ();} )B0%"0?`8 catch(Exception e){e.printStackTrace ();} 0O>ClE~P ~;#}aQYo Q'jw=w!|g Utility.log(nFileLength); ikV;]ox ={zTQ+7S` > ]^'h return nFileLength; uI/
wR! } qrlC
U4 9DNp tj[E!
//保存下载信息(文件指针位置) &~H ed_ private void write_nPos() !EhKg)y= { @
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try{ ngl +`|u output = new DataOutputStream(new FileOutputStream(tmpFile)); p|ink): output.writeInt(nStartPos.length); Pa{ for(int i=0;i<nStartPos.length;i++) f(Of+> { z m$Sw0#( // output.writeLong(nPos); Wq1 jTIQ output.writeLong(fileSplitterFetch.nStartPos); 6~x'~T output.writeLong(fileSplitterFetch.nEndPos); 2]]v|Z2M4 } KddCR& output.close(); PVBz~rG } ^x: lB> catch(IOException e){e.printStackTrace ();} C'#)mo_@t catch(Exception e){e.printStackTrace ();} bPU
i44P }
r_#dh zR^Gy" gYc]z5` //读取保存的下载信息(文件指针位置) M>]A!W= private void read_nPos()
-9i7Ja { sE6>JaH try{ aLGq<6Ja DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Lr$Mk#'B int nCount = input.readInt(); {4G/HW28 nStartPos = new long[nCount]; c
Rq2 re nEndPos = new long[nCount]; VIP7j(#t_g for(int i=0;i<nStartPos.length;i++) `Zm6e!dH- { 1^}I?PbqV nStartPos = input.readLong(); Ec@n<KK# nEndPos = input.readLong(); 2+
cs^M3 } P.,U>m input.close(); 6p)AQTh> } @a?7D;+< catch(IOException e){e.printStackTrace ();} 5dj@N3ZX7; catch(Exception e){e.printStackTrace ();} -{xk&EB^$5 } 9_?xAJ "+ou!YK+ ^Fco'nlM private void processErrorCode(int nErrorCode) 0- )K_JV
{ Gs,:$Im System.err.println("Error Code : " + nErrorCode); -V|"T+U } F^75y? 0
Uropam &xQM!f //停止文件下载 3c=kYcj public void siteStop() tTLg;YjN { 05`"U#`: bStop = true; lb-1z]YwQ for(int i=0;i<nStartPos.length;i++) l?U=s7s0? fileSplitterFetch.splitterStop(); bx8](cT_ 4VwF\ m0"K^p } TmQIpeych } pa[/6( //负责部分文件的抓取 ~P1~:AT **FileSplitterFetch.java ecghY=% */ Hsf::K x package NetFox; _5jT}I<k N>!:bF H4w\e#| import java.io.*; JNfL
jfE)< import java.net.*; ) CP F~mIV;BP {arqcILr public class FileSplitterFetch extends Thread { D0r viO 147QB+cE CI'RuR3y]Z String sURL; //File URL iAwEnQ3h long nStartPos; //File Snippet Start Position 50^ux:Uv+N long nEndPos; //File Snippet End Position
p+h$]CH int nThreadID; //Thread's ID vwU1}H boolean bDownOver = false; //Downing is over hzqJ! boolean bStop = false; //Stop identical ? nd:
:O FileAccessI fileAccessI = null; //File Access interface hy5[
L`B 4+RR`I8$Ge @%]A,\ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 4I$Y(E} { u5(8k_7 this.sURL = sURL; <xOX+D this.nStartPos = nStart; Yq+1kA this.nEndPos = nEnd; Y^eN}@]?& nThreadID = id; 7>JTQ CJ fileAccessI = new FileAccessI(sName,nStartPos);//定位 d~LoHp } ')y2W1 2?JV "O= Lgg,K//g public void run() =&WIa#!= { 'a['lF while(nStartPos < nEndPos && !bStop) fE-R(9K { k6(7G@@} ?Y( ,QY$:f< try{ +1ICX URL url = new URL(sURL); 1qRquY HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); qb>41j9_t httpConnection.setRequestProperty("User-Agent","NetFox"); *NmY] String sProperty = "bytes="+nStartPos+"-"; mlnF,+s httpConnection.setRequestProperty("RANGE",sProperty); UerbNz| Utility.log(sProperty); fZG Y'o&5 qs5>`skX ~]?:v,UIm( InputStream input = httpConnection.getInputStream(); Aqyw //logResponseHead(httpConnection); 1)ue-(o5 uE-(^u <RGH+4LF byte[] b = new byte[1024]; sT M;l, int nRead; /eF@a! while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) S
/hx\TzC { ;M:AcQZ|_ nStartPos += fileAccessI.write(b,0,nRead); No^gKh24 //if(nThreadID == 1) `2mddx8 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `q^#u }
L:$4o Bm$|XS3cD *]$B 9zVs! Utility.log("Thread " + nThreadID + " is over!"); DXs an bDownOver = true; :<QknU}dwy //nPos = fileAccessI.write (b,0,nRead); ".?4`@7F\ } XUqorE catch(Exception e){e.printStackTrace ();} n|( lPbD } p5G'})x } b6D;98p |R`"Zu` Ipp_}tl_ //打印回应的头信息 R'>!1\?Iq public void logResponseHead(HttpURLConnection con) ON :t"z5 { Bn}woyJdx for(int i=1;;i++) IPQRdBQ { a>wCBkD String header=con.getHeaderFieldKey(i); Ep7MU&O0iK if(header!=null) 6 d-\+t8 //responseHeaders.put(header,httpConnection.getHeaderField(header)); 4&iQo' Utility.log(header+" : "+con.getHeaderField(header)); m2(>KMbi else 4Yj1Etq.E break; .ZTvOm'mB^ } 5S~ H[>A" } z$~x 2< F9K%f&0 a xye-Z\-t public void splitterStop()
gjS|3ED { '!HTE`Aj bStop = true; po| Ux`u } K@JZ$ W__ArV2Z_ WyN
;lId } 0dchOUj Z(mUU] \TV /* XkaREE **FileAccess.java 1[FN: hm *//文件访问(定位,写) 5^B79A"} package NetFox; J=g)rd[` import java.io.*; O2w-nd74U zF1!a Q]ersA8 V> public class FileAccessI implements Serializable{ |Y9>kXM l i'IT,jz! //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 hZ&KE78? RandomAccessFile oSavedFile; Pfd1[~, long nPos; @\K[WqF$$q vsY?q8+P WtT;y|W public FileAccessI() throws IOException 8=8hbdy; { lx)^wAO4 this("",0); @DN/]P } q+ax]=w :U6`n e4z`:%vy public FileAccessI(String sName,long nPos) throws IOException Q6h+. { <kh.fu@.Q oSavedFile = new RandomAccessFile(sName,"rw"); -F 5BJk this.nPos = nPos; honh'j oSavedFile.seek(nPos); $0])%
} 6u[fCGi% Rh>B#
\ $7x2TiAL public synchronized int write(byte[] b,int nStart,int nLen) s8h*nZ)v { <b 5DX int n = -1; #:K=zV\ try{ F/5&:e?( ) oSavedFile.write(b,nStart,nLen); :eN&wQ5q n = nLen; tsXKhS;/w } +
G@N catch(IOException e) tl#sCf!c { Vk2$b{VdF e.printStackTrace (); wKJG 31I^ } '&IGdB I I"Oq< _ oPe|Gfv\G return n; x#1Fi$. } [doEArwn zakhJ 2W AeSUX } hnj\|6L ,9&cIUH d:kB Zrq /* ?UnQ?F(+G< **SiteInfoBean.java Jf YgZ\# */ Kz HYh package NetFox; \8vP"Kr a4Q@sn;] }(EH5jZ' public class SiteInfoBean { !fOPYgAGKn epy2}TI zsL@0]e& private String sSiteURL; //Site's URL D|uvgu2 private String sFilePath; //Saved File's Path GppCrQ%Ra| private String sFileName; //Saved File's Name ,\4]uZ< private int nSplitter; //Count of Splited Downloading File c_8&4 <WXVUEea x,B] J4 public SiteInfoBean() 'uL4ezTtA {//nSplitter的缺省值为5 (x=$b(I //default value of nSplitter is 5 F*72g)hVh this("","","",5); RQVu~7d[ } 3j7FG%\ e@D_0OZ '|8dt "C public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) <jh4P!\&j { MN?aPpr> sSiteURL= sURL; *`>BOl+ro sFilePath = sPath; ;[ <(4v$ sFileName = sName; = oAS(7o this.nSplitter = nSpiltter; `YhGd?uu$ zv]ZEWVzc A3]A5s6 } <PLAAh8 zdN[Uc+1Bd b:==:d:0s public String getSSiteURL() z.Cj%N { o'2eSm0H return sSiteURL; YT(N][V } kx,.)qKk =p5DT ]#:WL)@ public void setSSiteURL(String value) ,!orD1,' { h}Otz " sSiteURL = value; `/O`%6,f1! } 6tKrR{3#A 3H2~?CaJ S<Dbv? public String getSFilePath() ;V,L_"/X { eL3 _Lz return sFilePath; ;;0'BdsL` } |UTajEL o1AbB?%= :=Olp;+_ public void setSFilePath(String value) B+W7zv { P6+ B!pY sFilePath = value; nI:M!j5s` } 5(>=};r+ /,\V}`Lx" -^_2{i public String getSFileName() VF`!ks { fyQOF ItM return sFileName; (b25g! } {&5lZ<nu8A m8sd2&4 .}==p&( public void setSFileName(String value) f-%M~: { \jfK']P/H sFileName = value; (/:m*x*6 } {JE [ eiMP: *yBVZD|?H public int getNSplitter() %8*:VR { PaCCUF return nSplitter; BA@E } /VYT]( "&6vFm r ^/C\:hw public void setNSplitter(int nCount) }3
xkA { 'f( CN3.! nSplitter = nCount; X1#Ar) } s~M$Wo8 } x^ `/&+m VYG@_fd!x <6UXk[y /* PUR,r%K` **Utility.java uu6 JZp */ |
0 package NetFox; jQ{ @ol}n BUXE
s0]Lv q T6y& public class Utility { ZJDV'mC} q`xc h[H v>8.TE~2 public Utility() ^4`aONydl { 0qS/>u* Wga2).j6 Qs1CK;+zU } p:08q
B|uQ ?%,LZw^[ //线程睡眠 T5:Q_o] public static void sleep(int nSecond) QAkK5,`vV. { |=0vgwd"S try{ 9pLe8D Thread.sleep(nSecond); yCQvo(V[F } OAXA< catch(Exception e) IxbQ6 { o GuAF q e.printStackTrace (); !v8R( } $Cz2b/O } s#^0[ Rt iT'doF //日志 5}%R public static void log(String sMsg) #)'Iqaq7 { )LGVR3# System.err.println(sMsg); . 1kB8&} } xJ>5 ol D!.c??
Y(UK:LZ' public static void log(int sMsg) ,`f]mv l { Im6gWDdq@6 System.err.println(sMsg); v0C+DKi } |]G%b[ } aM~IRLmK cKTjQJ# Ta\F~$M /* u8c@q'_ **TestMethod.java }ny7LQ */ #B\s'j[A" package NetFox; 2"D4q (@ k
A3K ]Thke 4 public class TestMethod { t4oD> =,92 rl}<&aPH KKC%!Xy public TestMethod() n.g-%4\q { ///xx/weblogic60b2_win.exe 8:0/Cj try{ h*R@ d SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); r^5%0_F] //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 8i',~[ SiteFileFetch fileFetch = new SiteFileFetch(bean); I8XP`Ccq fileFetch.start(); ^6 wWv&G[8 } sU>IETo catch(Exception e){e.printStackTrace ();} P*KIk~J ,sitO y}ks o< @![P
} rd7p$e=i lp(2"$nQ '~Y@HRVL@| public static void main(String[] args) _:[@zxT<x { kWW2N0~$ new TestMethod(); -=5~h } ].Yz
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