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/* (?#"S67 **SiteFileFetch.java M6"a
w6 */ .[S\&uRv package NetFox; SfUbjs@a import java.io.*; 7 MG<!U import java.net.*; F tay8m@f /gq\.+'{ /H :Bu public class SiteFileFetch extends Thread { ~A,(D- cb%ML1c R|R3Ob.e SiteInfoBean siteInfoBean = null; //文件信息Bean \x=!' long[] nStartPos; //开始位置 tW"s^r=95 long[] nEndPos; //结束位置 z9ZS&=> FileSplitterFetch[] fileSplitterFetch; //子线程对象 k;pU8y6Y long nFileLength; //文件长度 XrN]}S$N boolean bFirst = true; //是否第一次取文件 o5< w2( boolean bStop = false; //停止标志 `k~w
14~w File tmpFile; //文件下载的临时信息 =[IKwmCX DataOutputStream output; //输出到文件的输出流 LqoH]AcN 06>+loBG //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) :[bpMP<bz; public SiteFileFetch(SiteInfoBean bean) throws IOException jP"yG# { s5u siteInfoBean = bean; P B"nf|pm //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ms/Q- tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); "In$|A\?E if(tmpFile.exists ()) s
Vg89I& { -59;Zn/ bFirst = false; G[\3)@I read_nPos(); .oz(,$CS" } RbJbVFz8C else 2[5z6oG { iK9#{1BpML nStartPos = new long[bean.getNSplitter()]; bh UghHT nEndPos = new long[bean.getNSplitter()]; 3Qu Ft~@@ } 'T*h0xX 4nGr?%> UszR. Z +3k#M[Bn} } Y\{&chuF A?Gk8 # 3gdT public void run() ]M/*Beh { .$s=E8fW //获得文件长度 sr`)l& t? //分割文件 Wj\<
)cH] //实例FileSplitterFetch q=_tjg //启动FileSplitterFetch线程 6cbIs_g //等待子线程返回 @-Ln* 3n try{ gclw>((5 if(bFirst) JsbH'l { Rb_+C nFileLength = getFileSize(); z)&GF$* if(nFileLength == -1) r_e]sOCb { Ar1X
mHq System.err.println("File Length is not known!"); L_ 2R3w } L6"?p-:@' else if(nFileLength == -2) c9axzg
UA { hwdZP=X System.err.println("File is not access!"); eHHqm^1z } `#>JRQ= else %XK<[BF { R9O[`~BA2 for(int i=0;i<nStartPos.length;i++) ulxy 4] h { =1h> N/VJ nStartPos = (long)(i*(nFileLength/nStartPos.length)); _chX
{_Hu- } =%$BFg1a( for(int i=0;i<nEndPos.length-1;i++) _U/C G<n { Y lEV@ nEndPos = nStartPos[i+1]; IL N0/eH } \A/??8cgXs nEndPos[nEndPos.length-1] = nFileLength; .T }q"
} +hKH\] } L'$;;eM4 R|O."&CAB </7_T<He. //启动子线程 g;PZ$|%&s> fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; {1]/ok2k5 for(int i=0;i<nStartPos.length;i++) R.B3
{ x\2N
@*I: fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), coFQu ;i siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), gCc::[}\Y nStartPos,nEndPos,i); 3rQ;}<*M Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !'T,%8'] fileSplitterFetch.start(); TWAt)Q"J } hp)k[|u; // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), k>dzeH siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); )#_:5^1 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Ve\=By-a| nEndPos = " + nFileLength); u+/1ryp // fileSplitterFetch[nPos.length-1].start(); E A}Vb(2 NamO5(1C NY!"?Zko //等待子线程结束 %K|+4ZY3 //int count = 0;
*^b<CZd9 //是否结束while循环 #K_E/~ boolean breakWhile = false; p{k^)5CR/ h|S6LgB p^ojhrr while(!bStop) 5u3SP?.& { ( [m[< write_nPos(); {&Es3+{A Utility.sleep(500); ss>p breakWhile = true; skRI\ ?3)
IzzO r%DaBx!x8 for(int i=0;i<nStartPos.length;i++) q"sD>Yh& { ??tNMr5{[ if(!fileSplitterFetch.bDownOver) C].w)B { m^rrbU+HM? breakWhile = false; _onEXrM break; .qjdi`v } KJ&~z? X } ;^`WX}]C( if(breakWhile) ubvXpK:. break; eED@Z/~6 6EeK5XLf, ek3,ss3 //count++; :0)nL //if(count>4) uk)6% // siteStop(); +GqV9x 8 } !WD~zZ|
n:P5m9T f/Q7WXl0
System.err.println("文件下载结束!"); ,\cO>y@ }
[C TR8 catch(Exception e){e.printStackTrace ();} GE0,d } 4M4oI . j%y)%4F8 ,{_;q: //获得文件长度 a' pJg< public long getFileSize() !gfz4f& { ~wdKO7fs int nFileLength = -1; {_{&t>s2 try{ JG=U@I]
URL url = new URL(siteInfoBean.getSSiteURL()); "uthFE HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); [8J/#!B
httpConnection.setRequestProperty("User-Agent","NetFox"); VP<_~OLc Vg+jF!\7 MCcWRbE5# int responseCode=httpConnection.getResponseCode(); DY~zi if(responseCode>=400) edW:(19} { [qEd`8V( processErrorCode(responseCode); ^8#;>+7R return -2; //-2 represent access is error %`~?w'
} YdI&OzaroE Ehv*E eT|"6WJ:{ String sHeader; ;1&7v ]5=C3Y k^ZcgHHgb for(int i=1;;i++) #q5
L4uM9 { gZ^NdDBO //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); o1"-x //Utility.log(in.readLine()); 6,*o;<k[ sHeader=httpConnection.getHeaderFieldKey(i); y_=},a if(sHeader!=null) k7\h- yn{ { t*&O*T+fgy if(sHeader.equals("Content-Length")) C6 XZZ { o y'GAc/ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); #z*- break; 1gZW~6a} } -PI_* }
V_SZp8 else 7:h8b/9 break; 3%JPJuNVw } Zu$30&U } <~[A catch(IOException e){e.printStackTrace ();} z}" Xt=G? catch(Exception e){e.printStackTrace ();} ^@&RJa-kb oA _,jsD4 pErre2fS Utility.log(nFileLength); v/4Bt2J W+'|zhn Dm"@59x return nFileLength; 22|a~"Z } ^E5[~C*o3 1i.t^PY bOi`JJ^ //保存下载信息(文件指针位置) 8?L7h\)- private void write_nPos() Felu`@b { yH<^txNF try{ Uv(THxVh output = new DataOutputStream(new FileOutputStream(tmpFile)); P(1bd"Q output.writeInt(nStartPos.length); 6<h?%j( for(int i=0;i<nStartPos.length;i++) (5SN=6O { !;YmLJk;hN // output.writeLong(nPos); 0<{+M` G/ output.writeLong(fileSplitterFetch.nStartPos); )V}u}5 output.writeLong(fileSplitterFetch.nEndPos); =)B@ `" } QsaaA
MGY output.close(); _VeZlk7k } v Kzq7E catch(IOException e){e.printStackTrace ();} f$lf(brQ: catch(Exception e){e.printStackTrace ();} 50:$km\ } 8?lp:kM !$:lv)y \X=?+|
9 //读取保存的下载信息(文件指针位置) K%) K$/A private void read_nPos() xwwy9:ze*l { uZe|%xK$y try{ B r GaCja DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 7*e7P[LQU int nCount = input.readInt(); S$!)Uc\)A nStartPos = new long[nCount]; <c[+60p" nEndPos = new long[nCount]; N5ityJIgQ for(int i=0;i<nStartPos.length;i++) {xm^DT { tN'-4<+ nStartPos = input.readLong(); QMGMXa nEndPos = input.readLong(); Wx;`=9 } cxhS*"Ph input.close(); KJ
Gh) } SBBDlr^P catch(IOException e){e.printStackTrace ();} -q9`Btz catch(Exception e){e.printStackTrace ();} niZ/yW{w } \($EYhx sv<U$M~)X k%iZ.. private void processErrorCode(int nErrorCode) ':kj\$U { RO-ABFEi( System.err.println("Error Code : " + nErrorCode); *5DOTWos } %&L]k>n^ l65-8 O`nrXC{ //停止文件下载 2k,!P6fgl public void siteStop() DP=4<ES%+ { .".xNHR# bStop = true; ?QGAiu0 for(int i=0;i<nStartPos.length;i++) sK~d{)+T fileSplitterFetch.splitterStop(); xm@vx}O: [KIK}: *I0{1cST } w$~|/UrLf } @D!KFJ //负责部分文件的抓取 \Uun2.K **FileSplitterFetch.java |];s[^$# */ }(AgXvRq package NetFox; -ec~~95 w(kN0HD %;UEyj import java.io.*; 5}3Q}o# import java.net.*; krkRP%jy [gZd$9a =F2e*?a3 public class FileSplitterFetch extends Thread { \BC|`)0h #/'5N|? @q9uU9c String sURL; //File URL .W{\wkn long nStartPos; //File Snippet Start Position gd>Op long nEndPos; //File Snippet End Position ShAI6j int nThreadID; //Thread's ID PJu)%al boolean bDownOver = false; //Downing is over >#z*gCO5, boolean bStop = false; //Stop identical *bu/Ko] FileAccessI fileAccessI = null; //File Access interface @DYx xM- S_cba(0-|\ cDMA#gp public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException )>q.!"B { 3 }Z[d this.sURL = sURL; a%>p"4WL this.nStartPos = nStart; "WOY`su> this.nEndPos = nEnd; lJ!+n<K+ nThreadID = id; L*tn>AO fileAccessI = new FileAccessI(sName,nStartPos);//定位 HVzG }r(J } wXf_2qB9 y?W8FL 1P&XG@ public void run() BgLK}p^ { kK nz
F while(nStartPos < nEndPos && !bStop) ckRWVw
{ 1,fjdd8OM; q:.URl \k;)m-0bj{ try{ 9 aT#7B URL url = new URL(sURL); $-9m8}U(Y HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); T'2(sHk httpConnection.setRequestProperty("User-Agent","NetFox"); s
bV6} String sProperty = "bytes="+nStartPos+"-"; u=
(
kii=/ httpConnection.setRequestProperty("RANGE",sProperty); ;3NA,JA#Y Utility.log(sProperty); N ?0T3-/K a?%X9 +1A ZK4/o InputStream input = httpConnection.getInputStream(); 2bU3*m^M //logResponseHead(httpConnection); -G2'c)DR ipfiarT~) lTsl= byte[] b = new byte[1024]; DPIiGRw int nRead; u(\O while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) v0`E
lkaN { p;Kw$fQ? nStartPos += fileAccessI.write(b,0,nRead); *b9=&:pU( //if(nThreadID == 1) s)W^P4< // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); n
*|F=fl } x]6OE]]8L g83]/s+ "Q;n-fqf Utility.log("Thread " + nThreadID + " is over!"); gS~QlW V bDownOver = true; !u@e^J{Ao //nPos = fileAccessI.write (b,0,nRead); -sl]
funRy } XJTY91~R catch(Exception e){e.printStackTrace ();} 62Yi1<kV@ } CGvU{n," } <hg t{b4 Kf
D8S KOVGwEj //打印回应的头信息 D_@WB.eL public void logResponseHead(HttpURLConnection con) %g}ri8 { yU3fM?a for(int i=1;;i++) dM8`!~#&PI { 85YE6^y String header=con.getHeaderFieldKey(i); .p&4]6 if(header!=null) %{g<{\@4(; //responseHeaders.put(header,httpConnection.getHeaderField(header)); oVyOiWo\Z Utility.log(header+" : "+con.getHeaderField(header)); 5O<7<OB else Hrm^@3 break; LC)-aw>- } fEF1&&8^ } &m_4# uFNVV;~RFI $+qJ#0OE$ public void splitterStop() f}b= FV{ { NL%5'8F>, bStop = true; >.N?y@ } {H{u[XR[z <5
G+(vP G4][`C]8c } 2bwf( S*<+vIo +]P??`,R; /* X-O/&WRYQ **FileAccess.java 86$9)UI *//文件访问(定位,写) 1TeYA6 t package NetFox; :clMO| import java.io.*; (<!Yw|~ +x$GwX )OxcJPo public class FileAccessI implements Serializable{
P 0v&*y3Y 6jT+kq) //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 v1wMXOR RandomAccessFile oSavedFile; }DiMt4!ZC! long nPos; ,;9byb IF-g % L5 ~wX public FileAccessI() throws IOException F3j#NCuO=z { @*'$QD, this("",0); fH[Yc>(oj } dHjJLs_
c+P.o.k; ak]:ir`o public FileAccessI(String sName,long nPos) throws IOException w3oh8NRs_ { GqB]^snh oSavedFile = new RandomAccessFile(sName,"rw"); CPGiKE this.nPos = nPos; G*.}EoA oSavedFile.seek(nPos); AB92R/ } H]2cw{2 8wJfGY J eCKnt= public synchronized int write(byte[] b,int nStart,int nLen) X}Heaqn { _)AX/%^% int n = -1; NVqJN$z try{ zyb>PEd. oSavedFile.write(b,nStart,nLen); Hxe!68{aR n = nLen; t;g=@o9YA } GcXh
V catch(IOException e) -'ff0l { |Et8FR3[m e.printStackTrace (); >drG,v0qh } Fo
K!JX* ro:B[XE 7mG/f return n; 4O}ZnE1[ } a B(_ZX'L tS|gQUF17 yb{ud } X)P;UVR0 Vu6$84>-, tCZ3n /* {p -q&k&R| **SiteInfoBean.java SvE3E$* */ Vqr#%.N package NetFox; >/W fGK=lT$ M.b1=Y public class SiteInfoBean { K9\p=H^T7 > J4Tk1//b t}$WP&XRG< private String sSiteURL; //Site's URL cOz8YVR- private String sFilePath; //Saved File's Path D}.Pk>5 private String sFileName; //Saved File's Name +hoZW R private int nSplitter; //Count of Splited Downloading File HP/f`8 LmCr[9/ K+2sq+3q public SiteInfoBean() J3
Y-d7=| {//nSplitter的缺省值为5 SQ$|s%)oB //default value of nSplitter is 5 Nu}x`Qkmr this("","","",5); /#WRd}IjK }
e u{ 1#]0\Y( . }#R public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) _SVIY@K|/ { V?_:-!NJ( sSiteURL= sURL; k
5~#_D> sFilePath = sPath;
(TKn'2 sFileName = sName; o p{DPUO0 this.nSplitter = nSpiltter; I%4)% 45?aV@ E[IjeJB5 } E;I'b:U` .k_>
BD]; F0Nl,9h(' public String getSSiteURL() F},#%_4 { =I(F(AE return sSiteURL; 1$+-?:i C } *O5Ysk^| _lK+/"-l *#{V^} public void setSSiteURL(String value) Npr<{}ZE { F=T};b sSiteURL = value; !L|}/u3v } Bz7rf^H`Z lMn1e6~K JI)@h 4b public String getSFilePath() 9Q*T'+V { cN{(XmX5n return sFilePath; Xyz w.%4c } v@qU<\Y> -gq,^j5, -g5o+RT@ public void setSFilePath(String value) AlVBhR` { fV>12ici sFilePath = value; WVa-0; } ktEdbALK [B2g{8{! $vC}Fq public String getSFileName() OV.f+_LS { %}`zq8Q; return sFileName; be->ofUYgs } sY%nPf~9q' Ra!Br6 UN8]>#\"` public void setSFileName(String value) ukInS:7 { L-,C5^ sFileName = value; 0t^Tm0RzH } l,lfkm 9f|+LN## cYeC7l" public int getNSplitter() CGp7 Tx # { DwNEqHi return nSplitter; @OB7TI_/
} _U<r@ 5ltrr(MeD S^zt> public void setNSplitter(int nCount) Zr#\>h 'c { |ctcY*+ nSplitter = nCount; $xK*TJ(k
} "NMSLqO } 9sId2py]W <J
o\RUx 7`pK=E}+ /* #Aver]eK **Utility.java TGSkJ 1Lx */ d95 $w8> package NetFox; I #bta p_:bt7
B T4e-QEH public class Utility { vxt<}h5J/! .dQEr~f #} '<!T'l:R:/ public Utility() Pe`eF(J { XPfheV G 5f-eWW]! Ty5}5)CRZ } y7@q]~% z:JQ3D7/we //线程睡眠 %h^ f?.(: public static void sleep(int nSecond) >J['so2Bf { g?1! /+ try{ ~}@cSv'(1 Thread.sleep(nSecond); Xt$o$V } DRy,n)U& catch(Exception e) =P)H3|AdIm { [R%Pf/[Fr e.printStackTrace (); NU/:jr.W# } '.5_L8 } J5j3#2l `F,*NESv //日志 UgC{ public static void log(String sMsg) [[A}MF*@ { UtzM+7r@ System.err.println(sMsg); eW/sPQ- } u~7
,v ?_BK(kL_ =H)"t:xE public static void log(int sMsg) /{sFrEMP\ { 7
yp} System.err.println(sMsg); xwe^_7 } :J~sz)n4 } i&',g >j}.~$6dj_ E,$5V^
9 /* 79G& 0 P\ **TestMethod.java vq;_x */ Fo$'*(i package NetFox; G~FAChI8![ c_dg/!Iu (I0QwB public class TestMethod { v#`7,:: Api<q2@R 5rPK7Jh`B public TestMethod() 'rSP@ { ///xx/weblogic60b2_win.exe m{{8#@g try{ bS"zp6Di SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); :W*']8 M- //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); `p\@b~GM SiteFileFetch fileFetch = new SiteFileFetch(bean); Xn3
\a81 fileFetch.start(); Kjfpq!NYE } n"dYN3dE catch(Exception e){e.printStackTrace ();} o@j)clf 9n!IdqKN w$j!89@) } OHyBNJ f.Feo ,d~6LXr<fM public static void main(String[] args) SZ3UR { {- Y.C*E new TestMethod(); /\e&nYz } c$AwJhl^] } lVR
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