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/* 0OGCilOb* **SiteFileFetch.java 8Jz:^k: */ #A]-ax?Qc} package NetFox; k}~O}~- import java.io.*; 1bGopi/ import java.net.*; %#$EP7"J
zxp` ^iQn'++Q public class SiteFileFetch extends Thread { 2)j0Ai% s3W@WH^. ak:c rrkx SiteInfoBean siteInfoBean = null; //文件信息Bean Q
X%&~ long[] nStartPos; //开始位置 ,m,)I long[] nEndPos; //结束位置 [TNj;o5J FileSplitterFetch[] fileSplitterFetch; //子线程对象 s: 3z'4oX long nFileLength; //文件长度 6m6zA/ boolean bFirst = true; //是否第一次取文件 r-h#{==*c boolean bStop = false; //停止标志 I* VCpaA File tmpFile; //文件下载的临时信息 a')|1DnR DataOutputStream output; //输出到文件的输出流 cV`E>w=D0 RQMEBsI} //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) JMTvSXr public SiteFileFetch(SiteInfoBean bean) throws IOException n8.kE)? { ['ksP-= siteInfoBean = bean; w9|w2UK //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 5+fLeC; tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); s`#(
if(tmpFile.exists ()) Q[#vTB$f { 7 w3CXY bFirst = false; }2ZsHM^]% read_nPos(); Ko^c|}mh*! } `c'W-O/ else Yq/.-4y {
TT-h;'nJ nStartPos = new long[bean.getNSplitter()]; zq%D/H6J, nEndPos = new long[bean.getNSplitter()]; I2H6y"pN } BATG FS& O iFS}p
=~+DUMBT HOBP`lf } hS9;k9w z~A]9|/61v @JRNb=?a public void run() N~F
RM& x { Zk[&IBE_ //获得文件长度 JH8zF{? //分割文件 2}W0
F2* //实例FileSplitterFetch YZ+RWu9K //启动FileSplitterFetch线程 8#Q$zLK42N //等待子线程返回 Oez>X=Xf try{ D0BI5q if(bFirst) 5y?-fT]X { Q3"}Hl2 nFileLength = getFileSize(); CA +uKM^"6 if(nFileLength == -1) rm}
R>4 { $U/YR&vcw System.err.println("File Length is not known!"); kHqzt g } %e@#uxm else if(nFileLength == -2) It75R}B { !\g+8> System.err.println("File is not access!"); Zc?ppO } ox
; else 3
zn W= { E#F/88( for(int i=0;i<nStartPos.length;i++) )Jv[xY~ { kkK
kf' nStartPos = (long)(i*(nFileLength/nStartPos.length)); {?`al5Sz } -@ZiS^l for(int i=0;i<nEndPos.length-1;i++) B7z -7&TE { ^H6<Km
l/V nEndPos = nStartPos[i+1]; V=1Bo~ } r0m*5rd1 nEndPos[nEndPos.length-1] = nFileLength; @}:uu$OH } ]@Sj`J[fd } bz|
D-. TB;o~>9U 0VK-g}"x //启动子线程 x\Y $+A,P fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 5xOv Y for(int i=0;i<nStartPos.length;i++) $t/x;<.H { #h@J=Ki fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V"!G2& siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), =H|6 GJ nStartPos,nEndPos,i); nF5qw>t# Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); c_"
~n| fileSplitterFetch.start(); Ig5L$bAM~ } P<K){V // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), B*gdgM*` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); O=9-Qv| // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %K]euEqs nEndPos = " + nFileLength); CpQN,-4 // fileSplitterFetch[nPos.length-1].start(); $m CarFV-T +NFzSal z;u //等待子线程结束 <ioO,oS' //int count = 0; F H1Z2 //是否结束while循环 ko^\HSXl boolean breakWhile = false; 46k?b|Q XerbUkZ 95<EN(oUD while(!bStop) f}D1|\7 { F"N60>> write_nPos(); N&[D>G]>v Utility.sleep(500); 7w1wr)qSB breakWhile = true; nW|wY. 8 B**8yg. &*
E+N[ for(int i=0;i<nStartPos.length;i++) L_w+y { 7+hK~ if(!fileSplitterFetch.bDownOver) ^3hn0DVQ { e]Zngt?b breakWhile = false; |!F5.%PY break; [NFNzwUB } &)oOeRwi]. } ,<:!NF9 if(breakWhile) 3 R&lqxhg break; (
9]_ HW[ &5L<i3BX cv/_r#vN //count++; ^V%rag
//if(count>4) Wpc|`e< // siteStop(); "HYQqNj?Z } 2On_'^O *Y@nVi RyRpl*^ System.err.println("文件下载结束!"); Z;h<6[( } #Mg]GeDJ{ catch(Exception e){e.printStackTrace ();} Ssk}e=] } V
i&*&"q Qeu\&%C!< ?h!i0Rsm //获得文件长度 }za[E>z public long getFileSize() '<0J@^vZ { I=;+n- int nFileLength = -1; a
{ab*tM try{ }^(}HBT URL url = new URL(siteInfoBean.getSSiteURL()); .IJ_jt-^d HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <x\7L2#p httpConnection.setRequestProperty("User-Agent","NetFox"); ^'jEnN( 6;
Y0a4Ax cJgBI(S5 int responseCode=httpConnection.getResponseCode(); >O5m5@GK3a if(responseCode>=400) \u&_sBLKV { ;sch>2&ZWU processErrorCode(responseCode); xF8}:z0 return -2; //-2 represent access is error r",]Voibd } c/5W4_J Z`&4SH=j Va$Pi19 O String sHeader; -8N|xQ378 ` gW<M mm5$>
[%U for(int i=1;;i++) Uje|`<X { CU7F5@+ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^2wLxXO6 //Utility.log(in.readLine()); %Qm k2 sHeader=httpConnection.getHeaderFieldKey(i); YJ:3!B>Zo if(sHeader!=null) IHp_A { A6oq.I0 if(sHeader.equals("Content-Length")) G
Xt4j { 0R0{t=VJZ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); S60IPya break; pN\Vr8tJ } dSCzx
.c } \Ofw8=N-2 else >*$; break; GjB]KA^ } *z'yk* } V]S1X^ catch(IOException e){e.printStackTrace ();} -VZRujl catch(Exception e){e.printStackTrace ();} .q][? mW3 Eq:2k)BE kbPE "urR Utility.log(nFileLength); 7a=S c)&>$S8* v_<2H'*Q return nFileLength; RwVaZJe)l } )wVIb)`R>Y 8z5# ]u; $0^P0RAH //保存下载信息(文件指针位置) Vpp;\ private void write_nPos() d`d0N5\ { A?Wk
wf try{ umLb+GbI4 output = new DataOutputStream(new FileOutputStream(tmpFile)); 1qi@uYDug output.writeInt(nStartPos.length); .qob_dRA for(int i=0;i<nStartPos.length;i++) EVQ0l@K
{ xmGk*W)P // output.writeLong(nPos); KS*oxZ output.writeLong(fileSplitterFetch.nStartPos); =e?$ M output.writeLong(fileSplitterFetch.nEndPos); YwcPX`eg } 9%sM*[A output.close(); DF {OnF } !AJ]j|@VBd catch(IOException e){e.printStackTrace ();} iqW1#)3'R catch(Exception e){e.printStackTrace ();} $mGvJ*9 } iK{T^vvk u-"c0@ dGwszziuK //读取保存的下载信息(文件指针位置) ]S 7^ITn private void read_nPos() 0J~Qq]g { iq*A("pU try{ UofTll) DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (qwdQMj` int nCount = input.readInt(); 6b~28 nStartPos = new long[nCount]; /HZumV? nEndPos = new long[nCount]; yg]2erR for(int i=0;i<nStartPos.length;i++) zdSh: { F~U!1) nStartPos = input.readLong(); ]TstSF= nEndPos = input.readLong(); IF*&%pB } _y .]3JNm input.close(); woq)\;CK } 5.tvB catch(IOException e){e.printStackTrace ();} >5T_g2pkv catch(Exception e){e.printStackTrace ();} 8RwX= } t5
a7DD @tRMe64 ~YCuO0t private void processErrorCode(int nErrorCode) >6Lm9&} { Mp\<cE System.err.println("Error Code : " + nErrorCode); 6aOp[-Le } z1,tJH0 1px\K8 nws"RcP+Z //停止文件下载 FbACTeB public void siteStop() A<YsfDa_d { jw6Tj;c bStop = true; O7aLlZdg~ for(int i=0;i<nStartPos.length;i++) /)uM[ dnai fileSplitterFetch.splitterStop(); NE|[o0On 0=v{RQ;W4 ^+?|Qfi } )y7_qxwbV } ;LJ3c7$@lf //负责部分文件的抓取 5,b]V)4 **FileSplitterFetch.java #G3N(wV3 */ !PUp>( package NetFox; ELa ja87 A[UP"P~u/ TOI4?D] import java.io.*; jJwkuh8R import java.net.*; N<z`yV /48 =UK b4,jN~ci public class FileSplitterFetch extends Thread { @kD8^,( oH 8(X0
: \|Dei);k String sURL; //File URL GO5 ~!g long nStartPos; //File Snippet Start Position _>bRv+RVR long nEndPos; //File Snippet End Position yZ}d+7T} int nThreadID; //Thread's ID +~2rW8 boolean bDownOver = false; //Downing is over H l j6$%. boolean bStop = false; //Stop identical qX>Q+_^ FileAccessI fileAccessI = null; //File Access interface Tvf~P w L*?!Z^k e&X>F"z2 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException lj &>cScC { & 7QH^ this.sURL = sURL; 8V4V3^_xs this.nStartPos = nStart; \+qOO65/+ this.nEndPos = nEnd; ;7G_f nThreadID = id; i+M*J#' fileAccessI = new FileAccessI(sName,nStartPos);//定位 -.vDF?@G } 4f1D*id*`# 1(`M~vFDK hhRaJ public void run() >R,?hWT { jOtX
60; while(nStartPos < nEndPos && !bStop) e-D4'lu { F!KV\?eM$ _py2kjA6 0kCQ0xB[a5 try{ #GqTqHNE< URL url = new URL(sURL); XKLF8~y8A HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DOm-)zl{|x httpConnection.setRequestProperty("User-Agent","NetFox");
T<jfAE String sProperty = "bytes="+nStartPos+"-"; wFlV=!>, httpConnection.setRequestProperty("RANGE",sProperty); DOL%'k ?B Utility.log(sProperty); P6?0r_Y !eD+GDgE] xNdID j@ InputStream input = httpConnection.getInputStream(); $T
dC/#7 //logResponseHead(httpConnection); T'rjh"C&| O25mkX 6GOcI#C9C byte[] b = new byte[1024]; V;9 }7mw int nRead; Ht=$] Px while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Qd8b-hg { 1
ycc5=. nStartPos += fileAccessI.write(b,0,nRead); Z}cIA87U //if(nThreadID == 1) "xwM+ AC // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); lg/sMF>z\f } q=Xg*PM, {tzxA_ 8@7AE" Utility.log("Thread " + nThreadID + " is over!"); sj9D bDownOver = true; Da,&+fZI! //nPos = fileAccessI.write (b,0,nRead); y' tRANxQ } LC'F<MpM catch(Exception e){e.printStackTrace ();} \K`jCsT } -ID!pT vW }
Q&+c.S M4<+%EV} kr_oUXiX //打印回应的头信息 m<fA|9 F# public void logResponseHead(HttpURLConnection con) ZzL@[g { -Z?Ck!00 for(int i=1;;i++) |>sv8/! { 44C+h String header=con.getHeaderFieldKey(i); Fd!iQ if(header!=null) >rRf9wO1l //responseHeaders.put(header,httpConnection.getHeaderField(header)); H%.zXQ4}n Utility.log(header+" : "+con.getHeaderField(header)); |[w^eg else ul}'{|4 break; q,,j',8kq/ } (UW6F4:$ } (
Yi=v'd t.z$j T7GQ^WnA public void splitterStop() ;nf&c;D { Iu6W=A bStop = true; +L6" vkz } rdI]\UH )<LI%dQ:'l +2O=s<fp } MuSaK % Es:6 z_(eQP]) /* 1jOKcm'# **FileAccess.java Qk7J[4 *//文件访问(定位,写) v!!;js^ package NetFox; "8t\MKt( import java.io.*; J8h7e}n? B "n`|;r5 oWrE2U; public class FileAccessI implements Serializable{ 83?1<v0% X<K9L7/* //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ^n71'MW RandomAccessFile oSavedFile; <UAP~RH{ long nPos; QE6El'S |B|@GF?: pU DO7Q] public FileAccessI() throws IOException r9;` { UG=I~{L this("",0); #L1>dHhat } FAd``9kRT x)\V lR '{^8_k\}B public FileAccessI(String sName,long nPos) throws IOException !Ud:?U { >e_%M50 oSavedFile = new RandomAccessFile(sName,"rw"); q4k`)?k9 this.nPos = nPos; k1wr/G'H[ oSavedFile.seek(nPos); 9i[4"&K } x,-S1[#X; ??+:vai2
X4
Y public synchronized int write(byte[] b,int nStart,int nLen) u
!.DnKu { ULTNhq
R*n int n = -1; #'g^Za try{ \AJS,QD oSavedFile.write(b,nStart,nLen); eRVY.E< n = nLen; |=,83,a } #jgqkMOd,j catch(IOException e) 4[(?L{ { Lv3XYZgW~ e.printStackTrace (); :B+Rg cqi } Q4CJ]J` R%W@~o\p] OT%V{hD return n; yI:r7=KO } 6mAB(X^+ [lOf|^9 |I/,F;' } Dx0O'uwR - &NQ\W !3QRzkJX~ /* 'FqEB]gu **SiteInfoBean.java km}MqBQl */ A ~XOK;sB package NetFox; >.LgsMRIKi RCQAtBd e|~C?Ow'J public class SiteInfoBean { >.n;mk ennR@pg ?Oqzd$- private String sSiteURL; //Site's URL V 1*Ad private String sFilePath; //Saved File's Path 44Q9 *." private String sFileName; //Saved File's Name U~CdU private int nSplitter; //Count of Splited Downloading File ki`8(u6l Q;Q%SI`yT yz8-&4YRNd public SiteInfoBean() J2'W =r_# {//nSplitter的缺省值为5 ,y{0bq9*2 //default value of nSplitter is 5 _o&94& this("","","",5);
{&0mK"z_ } =g >.X9lr RP(a,D| KS?mw`Nr public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) B%2L1T= { <_>.!9q sSiteURL= sURL; T
G_bje sFilePath = sPath; CJv>/#$/F sFileName = sName; xM%`KP.8X this.nSplitter = nSpiltter; _HLC>pH~# Rnzqw,q B( 8mH } </|)"OD9 YsZ{1W !e&rVoA public String getSSiteURL() 2+,5p { |7]?>- return sSiteURL; Yg[ v/[] } _Q)d+Fl |.Em_*VG Z@}sCZ=#A public void setSSiteURL(String value) abL/Y23
" { G5Je{N8W sSiteURL = value; 2YE7 23H=Z } 3IGCl w( :fRmUAK% Q
js2hj-$ public String getSFilePath() Sf=F cb { O@nqHZ return sFilePath; QH4k!^ } AfUZO^< qQL.c+%L 5dqQws-,?1 public void setSFilePath(String value) 8^8>qSD1 { A%h~Z
a sFilePath = value; ]7v81G5E } sZ]'DH&_( ax4*xxU L{Q4=p,A public String getSFileName() pF|8OB% { *wViH return sFileName; jY rym- } ZH_FA <njIXa{ {d^Q7A:` public void setSFileName(String value) -xw98 { y!SF/i?Py sFileName = value; r@olC7& } T~s&)wD {a]pF.^kf nDyvX1] public int getNSplitter() =E&2 4 { "!xvpsy return nSplitter; $U ~=.!_du } zpbcmQB* tp#Z@5= ok%EqO public void setNSplitter(int nCount) ,>&?ty9o { $[j-C9W nSplitter = nCount; 5LO4P>fq } O|?Z~ } ?E%U|(S)=L &aY/eD 5woIGO3X /* KLG6QBkj **Utility.java TG4\%S$w */ YfTd package NetFox; ~^^!"- Rl y jOf{0 hK:#+hg, public class Utility { CFD*g\g<* `oB' ( b;Hm\aK public Utility() :/>7$)+ { I%pCm||p |)28=Z|Z }Vs~RJM)} } \k|_&hG xR0~S
3caI //线程睡眠 _2]e1_= public static void sleep(int nSecond) F<h&3 { $eK8GMxZ# try{ J f\Qf Thread.sleep(nSecond); ?nB helW^ } lO551Y^ catch(Exception e) T {hyt { ,@}W@GGP) e.printStackTrace (); :5r:I[FFy } -;l`hRW } T^KCB\\< 2.^7?ok //日志 qJsQb public static void log(String sMsg) bs:C1j\& { }UyzMy, System.err.println(sMsg); h{Oz*Bq } Sja"(sJ U,oD44 bk/.<Rt public static void log(int sMsg) +<'uw { NFdJb\ System.err.println(sMsg); &z ./4X } z2rQ$O-# } "
7l jc 1i5 vW- '4 D
/,|pC /* 5Z^$`$/.v# **TestMethod.java 6&g!ZE'G */ 38"8,k package NetFox; #B}BI8o ( e7Yb=/F M\:"~XW public class TestMethod { ?whRlh 3c1o,2 d[~au=b public TestMethod() ^JYF1 { ///xx/weblogic60b2_win.exe #nU@hOfg try{ Wwn5LlJ^ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 0z#l0-NdQ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); k$9Gn9L% SiteFileFetch fileFetch = new SiteFileFetch(bean); 2N6Pa(6 fileFetch.start(); [{6&.v } vG'vgUo catch(Exception e){e.printStackTrace ();} &M!4]pow H j>L>6> d_4n0Kh0 } ;n yB R*JOiVAC RM?_15m public static void main(String[] args) d+gk q\ { Ktg&G<%J0 new TestMethod(); m
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