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/* VpUAeWb **SiteFileFetch.java A
>$I
-T+ */ Bt#N4m[X*| package NetFox; ^{{ qV import java.io.*; \9d$@V import java.net.*; u>$t' X8|EHb<
xPgBV~ public class SiteFileFetch extends Thread { `6YN3XS K^$=dLp ':W[ A SiteInfoBean siteInfoBean = null; //文件信息Bean ;=@0'xPEa- long[] nStartPos; //开始位置 '|4!5)/K long[] nEndPos; //结束位置 2tLJU Z1 FileSplitterFetch[] fileSplitterFetch; //子线程对象 eQ"E long nFileLength; //文件长度 hcc/=_hA boolean bFirst = true; //是否第一次取文件 -&;TA0~; boolean bStop = false; //停止标志 1}37Q&2 File tmpFile; //文件下载的临时信息 M;NX:mX9 DataOutputStream output; //输出到文件的输出流
cAy3^{3: _6Ha //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 9kojLqCT public SiteFileFetch(SiteInfoBean bean) throws IOException 7KPwQ?SjT { 3F0 N^)@ siteInfoBean = bean; &{RDM~ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); G
j1_!.T tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ca}2TT&t if(tmpFile.exists ()) C7vxw-o|&p { !c-*O<Y bFirst = false; fV:83|eQ read_nPos(); .o8t+X'G } m68*y;# else eq" ]%s { S$k&vc(0 nStartPos = new long[bean.getNSplitter()]; [2koe.?( nEndPos = new long[bean.getNSplitter()]; b2]Kx&! } jIF
|P- qNr}
\J| {U1m.30n *J{+1Ev~$p } l]cFqLp 6Iw\c TKjFp% public void run() ~4"dweu? { o.\oA6P_ //获得文件长度 rbQR,Nf2x //分割文件 <1pEwI~ //实例FileSplitterFetch }i2V.tVB- //启动FileSplitterFetch线程 E e]-qN*8 //等待子线程返回 5?L<N:;J_ try{ KU;9}!# if(bFirst) d1kJRJ { xCKRxF nFileLength = getFileSize(); 0g\(+Qg^ if(nFileLength == -1) [r-p]"R { 1sCR4L:+ System.err.println("File Length is not known!"); >Se,;cB'/] } T)CP2U else if(nFileLength == -2) /@Zrq#o
zx { 8X0z~& System.err.println("File is not access!"); (ik\|y% A } >j`qh:^ else s<Fl p { \Roz$t-R|f for(int i=0;i<nStartPos.length;i++) x`?3C"N:< { 4fzZ;2sl} nStartPos = (long)(i*(nFileLength/nStartPos.length)); akT6^cP^ } c(%|: P^ for(int i=0;i<nEndPos.length-1;i++) oE~Bq/p { .~}1+\~5 nEndPos = nStartPos[i+1]; 'RRE|L, } }75e:w[ nEndPos[nEndPos.length-1] = nFileLength; yEoV[K8k } JCaOK2XT; } W%)Y#C C-[1iW' tl].r|yl //启动子线程 ;>YzEo fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; $g7<Y*t[ for(int i=0;i<nStartPos.length;i++) !a<ng&H^U { +MLVbK fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gNhQD*+>{ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), *#Wdc O`- nStartPos,nEndPos,i); LDD|(KLR*. Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); UDni]P!E fileSplitterFetch.start(); l+R+&b^ } y Wya&|D9 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Q&V;(L62! siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); E!#WnSpnK // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", _y>~
yZx nEndPos = " + nFileLength); PT9*)9<L // fileSplitterFetch[nPos.length-1].start(); Faf&U%]*` ~nPtlrQa#* 7yba04D) //等待子线程结束 Lxk[;j+ //int count = 0; rD>f|kA?L //是否结束while循环 ZW}_Qs boolean breakWhile = false; mQ=#nk$~g L:8q8i `g})|Gx while(!bStop) 3 9|MX21k { rt|7h>RQ write_nPos(); 'eX ' Utility.sleep(500); H4JTGt1" breakWhile = true; l (%1jC8 JLJ;TM'4= "Yca%: for(int i=0;i<nStartPos.length;i++) N"1B/u { +@:x!q|^ if(!fileSplitterFetch.bDownOver) ym6K!i]q4 { _,d~}_$`i breakWhile = false; @fV9
S"TcM break; 69 o7EA } <rmvcim{* } lA-h`rl/ if(breakWhile) l0hlM# break; xjUtl N&V`K0FU g>9kXP+ //count++; e*n@j //if(count>4) xp9pl[l // siteStop(); yH}s<@y;7 } LraWcO\or' N"y)Oca{ _{Hj^}+$ System.err.println("文件下载结束!"); *~H Sy8s } Y)a^(!<H< catch(Exception e){e.printStackTrace ();} evJ.<{M } pXK^Y'2C! Yir
[!{ 0{[,E. //获得文件长度 TNr :pE< public long getFileSize() BV+ Bk+ { S/I /-Bp~ int nFileLength = -1; (2
a`XwR try{ :Xd<74Nu URL url = new URL(siteInfoBean.getSSiteURL()); .y,0[i V
N HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~| 6[j<ziL httpConnection.setRequestProperty("User-Agent","NetFox"); K}U-w:{ >6pf$0 Zoc0!84<z int responseCode=httpConnection.getResponseCode();
EUgs6[w 4 if(responseCode>=400) !7&5` q7 { ,-e{(L processErrorCode(responseCode); .K<Q& return -2; //-2 represent access is error ED&
`_h7? } :<#nTh_@\' B !=F2 uc"P3,M String sHeader; XEZF{lP .@Dxp]/B} wuJ4kW$ for(int i=1;;i++) ;{o|9x| { 7
^mL_SMj //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); FtC^5{V+V //Utility.log(in.readLine()); r{%qf; sHeader=httpConnection.getHeaderFieldKey(i); g2/8~cn8z if(sHeader!=null) {T
Ug.%u { R+,u^;\ if(sHeader.equals("Content-Length")) KFkoS0M5| { XNu^`Ha nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); :TC@tM~Oy break; NL0n009"c$ } q=qcm`ce } Mzw X>3x else H ?y,ie#u break; ?#YE`] } CoAvSw } {Fe[:\ catch(IOException e){e.printStackTrace ();} -{vKus catch(Exception e){e.printStackTrace ();} +V^;.P</ M|(Q0 _8
td3D=Y Utility.log(nFileLength); VEw" _aMPa+D=P Yr=Y@~ XL return nFileLength; 6;qy#\}2 } r s?R:+ Ktm4 A O 0|\$Vp //保存下载信息(文件指针位置) Uwx
E<=z private void write_nPos() Y0K[Sm> { ?vHU# try{ :+|Z@KB output = new DataOutputStream(new FileOutputStream(tmpFile)); X<; f output.writeInt(nStartPos.length); Jl9k``r* for(int i=0;i<nStartPos.length;i++) fku<,SV$O4 { 1"M]3Kl // output.writeLong(nPos); j;iAD:nf output.writeLong(fileSplitterFetch.nStartPos); M*HnM( output.writeLong(fileSplitterFetch.nEndPos); f\>M'{cV } pDCeQ6? output.close(); KX7>^Bt&k } 6,9>g0y'NG catch(IOException e){e.printStackTrace ();} hJ#xB6 catch(Exception e){e.printStackTrace ();} D^3vr2 } e?ly H FA3~|Zg EJ:%}HhA //读取保存的下载信息(文件指针位置) =j*$
|X3W private void read_nPos()
Eq\M;aDq { EeRX+BM, try{ c[1oww DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); V0XvJ
int nCount = input.readInt(); !*. -`$x nStartPos = new long[nCount]; V2|aN<Sx< nEndPos = new long[nCount]; [ $n_6 for(int i=0;i<nStartPos.length;i++) ?+a,m# Yx { !|S43i&p nStartPos = input.readLong(); VsE9H]v
nEndPos = input.readLong(); sCb=5uI } =k0_eX0 input.close(); %vhnl' } Z//+Gw<' catch(IOException e){e.printStackTrace ();} sAD}#Zw$ catch(Exception e){e.printStackTrace ();} )i^<r ;_z } vv+z'(l QR0Q{}wbqU w{@ o^rs private void processErrorCode(int nErrorCode) %k?U9pj^ { hUMf"=q+ System.err.println("Error Code : " + nErrorCode); %pd ,%pg } :'l^kSP_*C thM4vq hPePB= //停止文件下载 364`IC( a public void siteStop() 9g"2^^wD { T7u%^xm bStop = true; )MchsuF< for(int i=0;i<nStartPos.length;i++) }n2M G fileSplitterFetch.splitterStop(); ],a 5)kV TS9|a{j3! Yqi4&~?db } B1C-J/J } d]6#m'U //负责部分文件的抓取 #& Rw& **FileSplitterFetch.java 5ZK@`jkE */ Vq?p|wy package NetFox; ,+xB$e c>RFdc:U q):5JXql~ import java.io.*; 9-DZU,`P import java.net.*; A.F738Zp{Z :~T99^$zA ,\n&I( public class FileSplitterFetch extends Thread { DBD%6o>]K
&NoS=(s, D9
|n)f String sURL; //File URL MET' (m long nStartPos; //File Snippet Start Position [8,yF
D_U long nEndPos; //File Snippet End Position ^ ALly2 int nThreadID; //Thread's ID `a/%W4 boolean bDownOver = false; //Downing is over t@N=kV boolean bStop = false; //Stop identical @u]rWVy;\[ FileAccessI fileAccessI = null; //File Access interface \$e)*9) Xudg2t)+K _p&]|~a public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ZR]25Yy { iIa'2+ this.sURL = sURL; ve/<=IR
Zo this.nStartPos = nStart; _5# y06Q this.nEndPos = nEnd; Oz`BEyb]{ nThreadID = id; e`TH91@ fileAccessI = new FileAccessI(sName,nStartPos);//定位 A?%H=>v$ } r)~ T@'y Vq\`+&A
G]i/nB
public void run() s<_)$} { }O^zl# while(nStartPos < nEndPos && !bStop) K]0:?h;%Ld { f[a}aZ9) ahOM CZF| ps%q9}J try{ `t9?=h! URL url = new URL(sURL); dEA6 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @&:ar httpConnection.setRequestProperty("User-Agent","NetFox"); X{'q24\F String sProperty = "bytes="+nStartPos+"-"; PCM-i{6/ httpConnection.setRequestProperty("RANGE",sProperty); -~ Mb Utility.log(sProperty); 5Z\#0":e 80/F7 q'tn .#Z%1U%P. InputStream input = httpConnection.getInputStream(); #9xd[A: N //logResponseHead(httpConnection); Rh{zH~oZ 7-T{a<g A1#%`^W9 byte[] b = new byte[1024]; #+5pgD2C int nRead; x`mN U while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) {{MRELipW { DRgTe&+ nStartPos += fileAccessI.write(b,0,nRead); ul2")HL]; //if(nThreadID == 1) CS-uNG6 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ayD}r#7 } }mdAM6 ,Bo>E: u }J1tdko# Utility.log("Thread " + nThreadID + " is over!"); .CU5}Tv- bDownOver = true; mkF" //nPos = fileAccessI.write (b,0,nRead); 5v}8org } Vq;A>
catch(Exception e){e.printStackTrace ();} ?yR&/a } &n?^$LTPY } 9;Ox;;w :Q_<Z@2Y{ M9@ri ^x
//打印回应的头信息 TGe;HZ public void logResponseHead(HttpURLConnection con) T {Uc:Z { *"n vX2iz for(int i=1;;i++) okv 1K { C{DvD'^ String header=con.getHeaderFieldKey(i); Dzs[GAQ] if(header!=null) YY!6/5*/] //responseHeaders.put(header,httpConnection.getHeaderField(header)); \y) Utility.log(header+" : "+con.getHeaderField(header)); J@X'PG<
6B else ";Rtiiu break; $8[r9L!
} }S$@ Ez6 } UE ,t8j x{c/$+Z[ <l9-;2L4 public void splitterStop() !\L/[:n { +g]yA3 bStop = true; .0O2Qqdg } 3*)ig@e6
S"$m] yH*6@P4:0= } Zrr5csE ,|plWIl~ .?e\I`Kk^' /* ,NVsn **FileAccess.java e `,ds~ *//文件访问(定位,写) F^LZeF[#t package NetFox; FMkzrs import java.io.*; -3lb@ 6I6 P7MeX(Tay V6#K2 public class FileAccessI implements Serializable{ S'B|>!z@ jR#~I@q^ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 _({A\}Q| RandomAccessFile oSavedFile; mJ`A_0 long nPos; {aJJ`t >Ll$p0W @wC5 g 4E public FileAccessI() throws IOException
n>`as { /'DsB%7g this("",0); YH_7=0EJ } -!L"') X'% ;B Bk\Gj`"7 public FileAccessI(String sName,long nPos) throws IOException z,:a8LB#[ { njnDW~Snb oSavedFile = new RandomAccessFile(sName,"rw"); -7&Gi
+] this.nPos = nPos; D<X.\})Md oSavedFile.seek(nPos);
D"ehWLj } Xy &uZ NDAw{[.% #\ n8M public synchronized int write(byte[] b,int nStart,int nLen) 0#*#a13 { ]
0m&(9 int n = -1; 3lq Mucr try{ TkO[rAC oSavedFile.write(b,nStart,nLen); -,{-bi n = nLen; xOHgp=#D } [mr9(m[F catch(IOException e) m7GR[MR
{ u=/CRjot e.printStackTrace (); pOkLb
# } A4?+T+#d WJ9cZL ^3FE\V/=
return n; ;/*6U } -TOI c% [kgdv6E ?k|H3;\ } =.`qixN %-AE]-/HI t"YNgC ^ /* k` (jkbEZ **SiteInfoBean.java 5`RiS]IO] */ [e4]"v`N package NetFox; ?
j
9|5* ~w;]c_{.b d4 (/m_HMu public class SiteInfoBean { z>06hBv(?Y "AhTH.ZP G>+1*\c private String sSiteURL; //Site's URL NAzX". g private String sFilePath; //Saved File's Path k') E/n private String sFileName; //Saved File's Name FG!X"<he private int nSplitter; //Count of Splited Downloading File fQ=MJ7l }AvcoD/b N9<Ujom public SiteInfoBean() h}Wdh1.M3 {//nSplitter的缺省值为5 1uk0d`JL //default value of nSplitter is 5 3o|I[!2. this("","","",5); ,mL
!(US } o!r8{L <JwX_\?ln !;!~n` public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) b2b75}_A { +EM_TTf4 sSiteURL= sURL; Y05P'Q sFilePath = sPath; }/,CbKi,+ sFileName = sName; on7I
l this.nSplitter = nSpiltter; oq_6L\
~ OcSEo7W Q!FLR>8 } #s%-INcR ?<yM7O,4 Lh-`OmO0>F public String getSSiteURL() WmQ01v { )*d W=r/$V return sSiteURL; sfVf@0g } 5]1h8PW!Y pBC<u {A o,t+j public void setSSiteURL(String value) 9lo[&^< { 'snYu!`z
sSiteURL = value; iYbX } cubk]~VD HOp-P8z *X38{rj public String getSFilePath() 2spg?] { =4 X]gW return sFilePath; ^R$'eG 4L? } fXQiNm[P ^-M^gYBR ._96*r=o public void setSFilePath(String value) a/uo}[Y { 3?s ?XAh sFilePath = value; Bfv.$u00p } U^Tp6vN d Pu>N_^ C T/P7F\R public String getSFileName() d'9:$!oz { 9><mp]E4 return sFileName; r
CRgzC } >uI$^y1D 2n`Lg4=
9%iFV
N' public void setSFileName(String value) d=]U_+ { s
Fgadz6O sFileName = value; bxXiQa } U~2`P oT|m1aGE Yp4c'Zk public int getNSplitter() *V;3~x! { gK3Mms]}m return nSplitter; - n6jG}01b } ; W7Y2Md s-VSH fH8!YQG8$ public void setNSplitter(int nCount) &VWlt2-R0h { Ld|V^9h1; nSplitter = nCount; ~L+]n0* } ^Dx#7bsDZR } kYxS~Kd< &}`K^5K|O: W%!@QY;E( /* y02u?wJ **Utility.java XvSIWs */ }+Vv0jX|V package NetFox; 8Vt4HD 08 qSO*$1i 5QWNZJ&}d public class Utility { ,dd WBwMK aN^IP lz~J"$b public Utility() s([Wn)I { <2P7utdZ )8{6+{5lu (=T$_-Dj`} } i!MwBYk c/u_KJFF-n //线程睡眠 Eb.;^=x public static void sleep(int nSecond) ;~sr$6 { y>(rZ^y& try{ nb@" ?<L! Thread.sleep(nSecond); ?|t/mo|K? } X$wehMBX catch(Exception e) 9|!j4DS< { }&G]0hCT! e.printStackTrace (); IvW@o1Q } Z-|li}lDr } iG[?
]] Ds5NAp:x //日志 ^@}#me@ public static void log(String sMsg) 9[|4[3K { (buw^
,NwZ System.err.println(sMsg); < `Z%O<X } cINHH !v H|+tC=]4IZ 5iWe-xQ> public static void log(int sMsg) {:Vf0Mhb { =p\Xy* System.err.println(sMsg); ,sb1"^Wc } ~|)
9RUXr> } ?TuI:dC "]]q} O? d]M[C[TOX /* R^Bk] **TestMethod.java } 21j */ .u< U:* package NetFox; '>^Xqn ( D}"&2 |@`"F5@, public class TestMethod { *:arva5 : z~!p~ w4:<fnOM public TestMethod() \X@IkL$r { ///xx/weblogic60b2_win.exe 56s*A*z$
; try{ -fux2?8M SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); dokuyiN\ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Uh+jt,RB` SiteFileFetch fileFetch = new SiteFileFetch(bean); zeTszT) fileFetch.start(); 5L&:_iQZy } AA7#c7 catch(Exception e){e.printStackTrace ();} aii'}c BQ#jwu0e <"I?jgo } VC=6uB `$9L^Yg,4 31 ]7z public static void main(String[] args) b|E/LKa { uiK:*[ new TestMethod(); !Y%D
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