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/* CfoT$g **SiteFileFetch.java Qyr^\a;k' */ ersddb^J] package NetFox; Rs<li\GS import java.io.*; o0Y
{k8 import java.net.*; m4.IaBn/ kCWaji_x% <TL!iM public class SiteFileFetch extends Thread { a.r+>44M ~hSr06IY ep-~;? SiteInfoBean siteInfoBean = null; //文件信息Bean Qb}1tn) long[] nStartPos; //开始位置 n9}3>~ll long[] nEndPos; //结束位置 gxS*rzCG FileSplitterFetch[] fileSplitterFetch; //子线程对象 0Y8Si^T long nFileLength; //文件长度 Wu\{)g{&
boolean bFirst = true; //是否第一次取文件 fP>*EDn@xg boolean bStop = false; //停止标志 H +O7+=& File tmpFile; //文件下载的临时信息 DRC2U%[ DataOutputStream output; //输出到文件的输出流 A3VXh^y+ kDAPT_Gid //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) c 5&
_'& public SiteFileFetch(SiteInfoBean bean) throws IOException Dl2`b">u { Bn 5]{Df siteInfoBean = bean; Ov$_Phm: //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); lC8DhRd0_ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 6^M!p4$hF if(tmpFile.exists ()) ^Gc#D:zU { ,,hW|CmN30 bFirst = false; -hx' T6G% read_nPos(); h7iI=[_V } %.
=B=* else iB =R { '+6SkZ nStartPos = new long[bean.getNSplitter()]; ^{3,ok*Nf nEndPos = new long[bean.getNSplitter()]; 9U[
A } Bw]Y71 +}al_. &\Es\qVSf &R\t<X9 n } UQmdm$. bT^6AtsJ =.Tc
l"O[ public void run() %jgB;Y { $wgHaSni //获得文件长度 Sz.sX w; //分割文件 8Z{e/wnVF //实例FileSplitterFetch uTgvMkO //启动FileSplitterFetch线程 Cpm&w?6 //等待子线程返回 <6_RWtU try{ T)ZO+} if(bFirst) 21b { K+=cNC4B nFileLength = getFileSize(); vhA4ol if(nFileLength == -1) 0}a="`p#< { >h?!6L- d System.err.println("File Length is not known!"); PyOj{WX>W } n&? --9r else if(nFileLength == -2) D<-MbK^S { ^W&qTSjh System.err.println("File is not access!"); 9~
[Sio~ } >}& :y{z~ else jF5Y-CX { ^EK]z8;| for(int i=0;i<nStartPos.length;i++) A2fc_A/a { v{/z`J!JR nStartPos = (long)(i*(nFileLength/nStartPos.length)); sp=;i8Y 3 } 8.9Z0 for(int i=0;i<nEndPos.length-1;i++) tVB9kxtE { C,2k W`[V nEndPos = nStartPos[i+1]; 0+\%os V } zGDLF` nEndPos[nEndPos.length-1] = nFileLength; ws!pp\F } c7~+ 5 } : MfY8P) -@6R`m=> ^lB=O //启动子线程 )=KD fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Hs}3c
R} for(int i=0;i<nStartPos.length;i++) gj(|#n5C { Fx6c*KNX3
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =l7@YCj5c siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?X'm>R. @ nStartPos,nEndPos,i); 2pKkg>/S Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); G?p !*7N fileSplitterFetch.start(); rb"J{^ } =;hz,+ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), it
Byw1/ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); us/}_r74N* // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ULqFJ*nla nEndPos = " + nFileLength); Oz3JMZe // fileSplitterFetch[nPos.length-1].start(); ~F gxhK2+
Ez\TwK X+0+}S //等待子线程结束 re]e4lZ //int count = 0; }0Q_yuzx0m //是否结束while循环 S!'Y:AeD& boolean breakWhile = false; V 6DWYs> 'T!^H Pdq}~um3{ while(!bStop) eflmD$]SW { J>@T'# write_nPos(); 9L2]PU
v Utility.sleep(500); >s5i breakWhile = true; i?{cB!7 sbeS9vE
><t4 f(d for(int i=0;i<nStartPos.length;i++) 8>\tD { /0.m|Th'm if(!fileSplitterFetch.bDownOver) A_:CGtv: { 8h,>f#)0c breakWhile = false; 8-s7^*! break; ZGa;' } &xAwk-{W } xaPaK- if(breakWhile) LqZsH0C break; `>i8$q% @N
tiT,3k 50<QF //count++; QPc4bg\J~t //if(count>4) ZOAHM1ci // siteStop(); e-Pn,j } <"GgqyRzv hDn?R}^l{ <5 ? System.err.println("文件下载结束!"); F,[GdE;P } (uW$ch@2K catch(Exception e){e.printStackTrace ();} "!g}Q* } |TQ#[9C0 0~/'c0Ho })V^t3 //获得文件长度 !_yWe public long getFileSize() e&R?9z-* { S)?V;@p6 int nFileLength = -1; SS)9+0$ try{ IonphTcU! URL url = new URL(siteInfoBean.getSSiteURL()); n'5LY9" HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ZH~=;S-t httpConnection.setRequestProperty("User-Agent","NetFox"); k_o$ Ci Z9)-kRQz=r R^hlfKnt int responseCode=httpConnection.getResponseCode(); ^\(<s if(responseCode>=400) SsY:gp_ { eBZ94rA] processErrorCode(responseCode);
;4:[kv@ return -2; //-2 represent access is error >bLhCgF:" } pO_$ 8=G+ ;h7W(NO~z &1 BACKu String sHeader; 6zZT5
Kn a'Vz|SG ?LwBF;Y for(int i=1;;i++) xlP0?Y1Bl { K Y=$RO //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (:9=M5d //Utility.log(in.readLine()); PxvD0GTW sHeader=httpConnection.getHeaderFieldKey(i); 'PS_|zI if(sHeader!=null) p.ks
jD { j*6>{_[ if(sHeader.equals("Content-Length")) wni^qs.i@3 { J4woZ{d nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
A)5;ae break; .7<6
zG6J } ?niv}/'%O } O30eq 7( else )` ^/Dj; break; 2gN78#d } .rcXxV@f } |uIgZ|7[ catch(IOException e){e.printStackTrace ();} ,SF>$
. catch(Exception e){e.printStackTrace ();} gb^<6BYUG d5YL=o VE $Kdo^ Utility.log(nFileLength); %7S{g yADX^r( nK8IW3fX9) return nFileLength; hWz/PK, } r+W;}nyf '44I}[cA/ r .`&z //保存下载信息(文件指针位置) Nf^6t1se private void write_nPos() cHAq[Ebp2! { }~+q S` try{ 8o SL3 output = new DataOutputStream(new FileOutputStream(tmpFile)); c!ul9Cw output.writeInt(nStartPos.length); 8=-/0y9, for(int i=0;i<nStartPos.length;i++) [W8"Mc|ve { tt0 3gU` // output.writeLong(nPos); qy( kb(J output.writeLong(fileSplitterFetch.nStartPos); Jwtt&" c0. output.writeLong(fileSplitterFetch.nEndPos);
B;A< pNT } C9j3|]nyL output.close(); L2Z-seE } |I2~@RfpO: catch(IOException e){e.printStackTrace ();} Ywo=w:' catch(Exception e){e.printStackTrace ();} MFtC2* } k++" Yma-$ytp S] R.:T_% //读取保存的下载信息(文件指针位置) E5X#9;U8E" private void read_nPos() !<UdG+iV { fAT+x1J\ try{ *JA0Vs5 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); #GfM!<q< int nCount = input.readInt(); 6
9s% nStartPos = new long[nCount]; BmI'XB3'P nEndPos = new long[nCount]; <Em|0hth for(int i=0;i<nStartPos.length;i++) b^'>XT~1J& { 5@nvcCp nStartPos = input.readLong(); .)|2^ 'W nEndPos = input.readLong(); nhLw&V3y } \^3cNw input.close(); @M)" } FwpTQix! catch(IOException e){e.printStackTrace ();} q71V]! catch(Exception e){e.printStackTrace ();} m0,TH[HWGF } ~(-df> A2%RcKY7 p7p6~;P private void processErrorCode(int nErrorCode) G<FB:?| { FfM,~s<Efz System.err.println("Error Code : " + nErrorCode); v@1f,d } vVFT0_ ;XI=Y"h{% c{{RP6o/j= //停止文件下载 q!as~{! public void siteStop() C,) e7 { +EvY-mwfQ bStop = true; -1%AM40j for(int i=0;i<nStartPos.length;i++) m+EtB6r fileSplitterFetch.splitterStop(); Kwo0%2Onkd @ [<B:Tqo Dq<!wtFG[ } 0[92&:c, } =p \eh?^ //负责部分文件的抓取
|!xqkmX **FileSplitterFetch.java 4p&YhV7j)o */ t]XF*fZH package NetFox; |HQFqa< nyx(0 Tilw.z import java.io.*; yhxZ^(I import java.net.*; [-hsG E rds0EZ4 W cdv0:+[P public class FileSplitterFetch extends Thread { ^o[(F<q W744hq@P% ?Vc/mO2X String sURL; //File URL S20E}bS:> long nStartPos; //File Snippet Start Position 7,2#0Z`ge long nEndPos; //File Snippet End Position >_u5"&q int nThreadID; //Thread's ID DxzNg_E] boolean bDownOver = false; //Downing is over "64D.c(r$ boolean bStop = false; //Stop identical
hOr4C4 FileAccessI fileAccessI = null; //File Access interface <(x!P=NM- im@c|| S<Uv/pn public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException xX\A&9m { c#T0n !} this.sURL = sURL; Ht7v+lY90^ this.nStartPos = nStart; 9@ 8)ZHf this.nEndPos = nEnd; GQ1m
h*4$ nThreadID = id; _MzdbUb5, fileAccessI = new FileAccessI(sName,nStartPos);//定位 gjP bhY=C[ } gacE?bW' AxiCpAS;J tybM3VA public void run() BF(Kaf;<t. { PaBqv] while(nStartPos < nEndPos && !bStop) dk@iAL*v { Rqun}v} s AlOX`t [OwrIL try{ f4+}k GJN URL url = new URL(sURL); &h?8yV4B HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Dlx-mm_ httpConnection.setRequestProperty("User-Agent","NetFox"); ^e:rRk7 & String sProperty = "bytes="+nStartPos+"-"; M%N_4j. httpConnection.setRequestProperty("RANGE",sProperty); K~jN"ev Utility.log(sProperty); E)%r}4u> {p7b\=WB- nm
!H< InputStream input = httpConnection.getInputStream(); 3.D|xE]g //logResponseHead(httpConnection); OIrr'uNH l~$Od jf #yR@.&P byte[] b = new byte[1024]; oU)HxV int nRead; XO"BEj<x while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ziG]BZ { S3Sn_zqG nStartPos += fileAccessI.write(b,0,nRead); Kz9h{Tu4 //if(nThreadID == 1) IK|W^hH\8 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); LO;Z3Q>#0 } RLUH[[ ~n9- ul ag$ge Utility.log("Thread " + nThreadID + " is over!"); zHt}`>y& bDownOver = true; AGgL`sP //nPos = fileAccessI.write (b,0,nRead); zK ir }
%( o[Hsl catch(Exception e){e.printStackTrace ();} GFO(O } #)28ESj } 0?\d%J!"S 4e9'yi !_LRuqQ?" //打印回应的头信息 D(^ |'1 public void logResponseHead(HttpURLConnection con) ~e R6[; { 5wGc"JHm for(int i=1;;i++) ^*+-0b;[G { .="[In' String header=con.getHeaderFieldKey(i); w\Bx=a>vc if(header!=null) ^]1M8R, //responseHeaders.put(header,httpConnection.getHeaderField(header)); `|g*T~;
kC Utility.log(header+" : "+con.getHeaderField(header)); O-YB+~"3Z else ]5hGSl2 break; zoO9N oUHW }
O^I%Xk } 2ZZF hj ]{E{ IW8 ]QK@zb}x public void splitterStop() <P)0Y u { X~5kgq0" bStop = true; +]N PxUa } `DcZpd.n \`,,r_tO 'UL"yM } O(Vi/r2:e } l4d/I _9Y7.5 /* d&[.=M\E8 **FileAccess.java Ex3V[v+D( *//文件访问(定位,写) @&E{
L package NetFox; }!0nb)kL import java.io.*; "N4rh<< f3Cjj]RFv $l!+SLK public class FileAccessI implements Serializable{ b|z_1j6U J#tY$PE //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ILq"/S. RandomAccessFile oSavedFile; +x"cWOg long nPos; YJEL'k<l kqie|_y ;\N${YIn public FileAccessI() throws IOException 6Y(Vs> { 0(~,U!g[= this("",0); 3-Xc3A=w } C!r9+z)< 3gzcpFNqX v5!G/TZ1 public FileAccessI(String sName,long nPos) throws IOException KZ}F1Mr { <!M ab} oSavedFile = new RandomAccessFile(sName,"rw"); 6su^yt this.nPos = nPos; -H;p +XAY oSavedFile.seek(nPos); ]$gBX= } 4)=\5wJDg1 fooQqWC) Q-LDFnOFwp public synchronized int write(byte[] b,int nStart,int nLen) muqIh!nn { =7WE int n = -1; 09>lx$ try{ 3d0Yq oSavedFile.write(b,nStart,nLen); (e$/@3* n = nLen; C/L+:b&x~ } p|b&hgA catch(IOException e) [$b\#{shtP { U~e^ e.printStackTrace (); Z>#MTxU( } O-ZB4hN8 |p1pa4%} ZHku3)V=o return n; `]xot8 } v<qiu>sbz}
0^PI&7A?y ^%qhE8 } 9O/l{ p&%M=SzN x>yeF,q1 /* 8 O5@FU
3 **SiteInfoBean.java _4VS.~}/R */ + ^9;<>P package NetFox; i+z;tF` wEImpsC` u*NU MT2 public class SiteInfoBean { @Yy:MdREA yb(zyGe ages-Z_X private String sSiteURL; //Site's URL ped3}i+|] private String sFilePath; //Saved File's Path K&WNtk3hT private String sFileName; //Saved File's Name jGtoc,\X private int nSplitter; //Count of Splited Downloading File JyBsOC3 S2jO #iot.alNA public SiteInfoBean() '0!IF&p' {//nSplitter的缺省值为5 jJmg9&^R //default value of nSplitter is 5 {,|J?>{ this("","","",5); #!%\97ZR } }m~2[5q%/ p<@0b O!(FNv0 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) P|S'MS';: { mne=9/sE" sSiteURL= sURL; n ./onv sFilePath = sPath; E
Fx@O sFileName = sName; y ~
A] this.nSplitter = nSpiltter; f;(]P AF
qut nFn@Z'T$N } I oz
rZ ;b""N, +P~E54 public String getSSiteURL() k-(hJ}N { ?'_Q^O> return sSiteURL; Y( D@B|"'m } #]yb;L h%Nbx:vKk %`c?cB public void setSSiteURL(String value) ZR3x;$I~4 { #0HF7C3 sSiteURL = value; ,'CDKzY } =~&Fq$$ BW>f@;egg uxq!kF'Ls public String getSFilePath() $h Isab_ { Z' 0Gd@/ return sFilePath; I499Rrw#E } a/.O,&3
eTc0u;{V )p MZ5|+X public void setSFilePath(String value) VK+#!!Ha { z^/aJ@gQ sFilePath = value; P^%.7C } -4p^wNR 1u\fLAXn .&ynS public String getSFileName() h-1eDxK6 { _ "ysJ& return sFileName; \jdpL1 } EiY i<Z_S urHQb5|T} /hue]ZaQq public void setSFileName(String value) *R*Tmo" { Ah_'.r1<P9 sFileName = value; #]ii/Et#x } ?Rl?Pp=> z,nRw/o ~>@Dn40 public int getNSplitter() -v9V/LJ { `@{qnCNQ return nSplitter; $cev,OW6] } 9-+6Ed^2 x C'>W"pY DVYY1!j< public void setNSplitter(int nCount) 63QSYn,t { a$I;
L nSplitter = nCount; $S$%avRX } Aa&3x~3+ } 5Mb1==/R c@{,&,vsj bQk5R._got /* r4O*0Q_ **Utility.java ?-O(EY1E */ S
~lw5 package NetFox; uU`zbh}]L. (tEW#l'} KM|[:v public class Utility { S<Q6b_D >P5 EW!d wX7B&w8wV public Utility() au8bEw&W { -t
%.I=| |pr~Ohz 0[0</"K%1m } ^HKxaW9W `3r *Ae //线程睡眠 p&bQ_ XOH public static void sleep(int nSecond) 4qjY,QJ { C+}uH:I'L try{ J3Q.6e=7 Thread.sleep(nSecond); SSi}1 } (@`+Le catch(Exception e) yPm)r2Ck { xYM!mcA e.printStackTrace (); SZc6=^$ } m%q#x8Fp } A0S6 4( 94W9P't //日志 -4b9( public static void log(String sMsg) Yc#o GCt { XaD}J:X q System.err.println(sMsg); BZsw(l4/0' } b n^^|i ;4XX8W1 XLFJ?$)Tro public static void log(int sMsg) ~@R=]l" { %@*diJ System.err.println(sMsg); hdN3r{ } ~9]tt\jN*Y } O>w$ 2N(c&Dzkh` t,R5FoV /* <H)h+?&~d **TestMethod.java ,[+gE\z{{u */ vC\]7]mC package NetFox; b#k$/A@ `
M"Zq L<QqQ"` public class TestMethod { t ba%L X>F/0/ sBF}j.b public TestMethod() [F+lVb { ///xx/weblogic60b2_win.exe Wuye:b! try{ /5suyM=U SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); mRfF) //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); rtf>\j+ SiteFileFetch fileFetch = new SiteFileFetch(bean); :?jOts>uP fileFetch.start(); suPQlU>2sj } Z\i@Qa +r catch(Exception e){e.printStackTrace ();} 0?SdAF[:z ctdV4%^{ SLz^Wg._ } *8js{G0h 9+=U&* 6E@r9U public static void main(String[] args) sqac>v { &^qD<eZ!Eq new TestMethod(); #)=P/N1 } &{y-}[~
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