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/*
I~T **SiteFileFetch.java EfX\" y */ Pi+pQFz5 package NetFox; %k%%3L, import java.io.*; umT * import java.net.*; T:T`M:C. K|pg'VT" I(<9e"1O public class SiteFileFetch extends Thread { !3F3E8% Su/8P[q_ (1EtC{
m SiteInfoBean siteInfoBean = null; //文件信息Bean 6VUs:iO1j5 long[] nStartPos; //开始位置 KH$|wv long[] nEndPos; //结束位置 s&hJ[$i FileSplitterFetch[] fileSplitterFetch; //子线程对象 E1r-$gf_ long nFileLength; //文件长度 }7non boolean bFirst = true; //是否第一次取文件 b5Q|$E boolean bStop = false; //停止标志 hrNB"W|?x File tmpFile; //文件下载的临时信息 GYZP?E p* DataOutputStream output; //输出到文件的输出流 rp9?p% {N3&JL5\"E //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Hf/ZaBn public SiteFileFetch(SiteInfoBean bean) throws IOException JDJ"D\85 { TAxu ]C$P siteInfoBean = bean; 3Fb9\2<H //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); \sBXS. tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); X [<%T}s# if(tmpFile.exists ()) ho-#Xbq#g { /KLkrW bFirst = false; zmU@ k read_nPos(); SZ29B } l+#J oc<8 else 0iYo&q'n { _01wRsm%2 nStartPos = new long[bean.getNSplitter()]; nb<e<>L nEndPos = new long[bean.getNSplitter()]; u,V_j|(e } _tUh*"e& V&*|%,q iYZn`OAx hkb&]XWi[ } ;FQNO:NP }*
\*<d
3 PYBE?td public void run() ~NZL~p { ;j.-6#n //获得文件长度 F\, vIS //分割文件 Ngj&1Ta&[ //实例FileSplitterFetch o%bf7)~s //启动FileSplitterFetch线程 |1GOm=GNK //等待子线程返回 6Df*wi!jI try{ ,<N{Y[n]e if(bFirst) HfZ ^ED"} { 0 N"N$f nFileLength = getFileSize(); 'W,*mfB if(nFileLength == -1) IyI0|&r2A { q{&\nCy System.err.println("File Length is not known!"); 0-~s0R89A } =A!rZG else if(nFileLength == -2) ta6>St7. { l\F71pwSI System.err.println("File is not access!"); V@g v } [YP{%1*RM else [GPCd@ { y XKddD for(int i=0;i<nStartPos.length;i++) s`ZP2"`f { $*VZa3B\ nStartPos = (long)(i*(nFileLength/nStartPos.length)); MVnN0K4 } >23$_'2 for(int i=0;i<nEndPos.length-1;i++) *|<T@BXn { IU<lF) PF$ nEndPos = nStartPos[i+1]; (i L*1f } 8v z h5,U nEndPos[nEndPos.length-1] = nFileLength; D Qz+t } k 3H0$1 } DF_wMv:>^ =&6sU{j* .%y'q!? //启动子线程 ; >>n#8` fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Th$Z9+() for(int i=0;i<nStartPos.length;i++) @R}3f6@67 { |_+#&x fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <#J5.I 1 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), OLPY<ax nStartPos,nEndPos,i); $[}EV(#y Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <}:` Y" fileSplitterFetch.start(); z3]W # } d!w3LwZ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), u7^(?"x siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;W+8X-B // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 63 'X#S nEndPos = " + nFileLength); MT"&|Og // fileSplitterFetch[nPos.length-1].start(); )=sbrCl,C/ =6qTz3t X3a 9- //等待子线程结束 *2u~5Kc< //int count = 0; BGBHA"5fz //是否结束while循环 mM72>1~L* boolean breakWhile = false; PWyf3 ~x!up9 A$r$g\5+ while(!bStop) qxb]UV,R { oWL_Hh%-f` write_nPos(); DrKB;6 Utility.sleep(500); H)i|?3Ip breakWhile = true; "5Y6.$Cuf! ?!&%-R6* C&>*~ for(int i=0;i<nStartPos.length;i++) @`dg:P*[ { GE(~d ' if(!fileSplitterFetch.bDownOver) 3PGAUQR#"q { _<LL@IX breakWhile = false; @U18Dj[ break; MNWI%*0LO } Fu_I0z } VK]U* V1 if(breakWhile) UL-_z++G break; sa4w.9O1GS J6n>{iE T"[]'|' //count++; HB8s[]A:D //if(count>4) .dk<?BI#H // siteStop(); 7Vsp<s9bj } HK8sn1j gr SF}y!3 m9oOH5@K~ System.err.println("文件下载结束!"); H:]cBk^[, } {?eUAB< catch(Exception e){e.printStackTrace ();} RC/ 3\' } 3}<U'%sd zk
FX[-'O N=BG0t$ //获得文件长度 (_zlCHB public long getFileSize() A vq+s.h { ><
$LV& int nFileLength = -1; WA8<:#{e try{ @wgd
3BU URL url = new URL(siteInfoBean.getSSiteURL()); ]~I+d/k
d HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~_vSMX httpConnection.setRequestProperty("User-Agent","NetFox"); Ztg_='n \~ChbPnc \"oZ\_ int responseCode=httpConnection.getResponseCode(); x{SlJ%V if(responseCode>=400) T:$^1"\ { WJOoDS!i processErrorCode(responseCode); (MI>7| '; return -2; //-2 represent access is error \4q|Qno8 } qK a}O* GYfOwV!zB [|OII!" String sHeader; P[WkW# HCs^?s8Pp +QU>D:l for(int i=1;;i++) Sp80xV_B { (c(F1=K //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ZpVkgX4 //Utility.log(in.readLine()); r k W7;! sHeader=httpConnection.getHeaderFieldKey(i); >\Dy if(sHeader!=null) z}ar$}T { cK+TE8ao if(sHeader.equals("Content-Length")) 93HVx# { P>C'?'Q7 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); i=aR~ break; ,2nu*+6Y/ } &/? Ct!_ } l~rj7f; else }_]AQN$'G break; e{5?+6KH } Or5?Gt } [j+:2@ catch(IOException e){e.printStackTrace ();} 1IA1; catch(Exception e){e.printStackTrace ();} :3n@]. y("WnVI ;>v.(0FE6 Utility.log(nFileLength); /h0bBP k{SGbC1=VK =0=#M(w return nFileLength; q@ -B+ } P C_! 'w+]kt-
=\oH=
f //保存下载信息(文件指针位置) b#
N"}-\^ private void write_nPos() Sf*)Z3f { OoSk^U) try{ dH^6K0J output = new DataOutputStream(new FileOutputStream(tmpFile)); !CGX \cvW output.writeInt(nStartPos.length); VI2lwE3 for(int i=0;i<nStartPos.length;i++) hpAdoy[ { r%PWv0z_c // output.writeLong(nPos); :(n<c output.writeLong(fileSplitterFetch.nStartPos); I}4
PB+yu output.writeLong(fileSplitterFetch.nEndPos); zuvPV{
X } zqeQ output.close(); j>\c >U } r<UVO$N catch(IOException e){e.printStackTrace ();} o&?c,FwN catch(Exception e){e.printStackTrace ();} <b:%o^ } Hb=#` jSY[Y:6md VsQ|t/|# //读取保存的下载信息(文件指针位置) ] 3{t}qY$A private void read_nPos() 5*YoK)2J { f^$,; try{ PftK>,+, DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); $o[-xNn1 int nCount = input.readInt(); 0|P=S|%~ nStartPos = new long[nCount]; KZppQ0 nEndPos = new long[nCount]; c{MoeIG)v@ for(int i=0;i<nStartPos.length;i++) b(*\4n { +0pI}a\ nStartPos = input.readLong(); QL/KY G nEndPos = input.readLong(); 68tyWd} } UM7@c7B? input.close(); o<Zlm)"%1 } 9{u8fDm! catch(IOException e){e.printStackTrace ();} 8rsc@]W catch(Exception e){e.printStackTrace ();} 9M96$i`P } 'c35%?] ],]Rv#` cJ4My#w private void processErrorCode(int nErrorCode) o:d7IL { ?@b6(f
xX System.err.println("Error Code : " + nErrorCode); h*S"]ye5 } -n _Y.~ LDlYLsF9 rqamBm 5 //停止文件下载 #1<m\z 7l public void siteStop() t+?Bb7p,H { W'./p"2g bStop = true; .|,LBc! for(int i=0;i<nStartPos.length;i++)
UleT9 [M fileSplitterFetch.splitterStop(); $BwWQ?lp hi8q?4jE ;+ hh|NiQ } %SmOP sz } Cj0r2^` //负责部分文件的抓取 ^j<v~GTx+ **FileSplitterFetch.java ,->ihxf */ {T4_Xn -I package NetFox; /@9Q:'P pv]@}+<Dt g NI1W@) import java.io.*;
t ed:] import java.net.*; zj`c%9N+ ^#_gk uyd! Px_8lB/; public class FileSplitterFetch extends Thread { >dAl *T #HcQ*BiF3 ,P~e)<. String sURL; //File URL J}V4.R5d long nStartPos; //File Snippet Start Position aq?bI:>8 long nEndPos; //File Snippet End Position 9)!Ksg(h int nThreadID; //Thread's ID AwJg/VBo) boolean bDownOver = false; //Downing is over xQFRM aQE boolean bStop = false; //Stop identical 5 {! fa FileAccessI fileAccessI = null; //File Access interface r^ ,_m,s'< b<u\THy# eb_.@.a public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException .}dLqw { 7U [C=NL this.sURL = sURL; j7P49{ this.nStartPos = nStart; ~^F]t$rz this.nEndPos = nEnd; |O8e;v72g^ nThreadID = id; 0LQRQuh1 fileAccessI = new FileAccessI(sName,nStartPos);//定位 #}~tTL } 9wL2NC31Q ^%\a,~ ,+i^]yF3j public void run() nDrRK { RZz?_1' while(nStartPos < nEndPos && !bStop) iA[T'+.Y { fG 2)r >{^_]phlb !.R-|<2|6 try{ neEqw+#Z URL url = new URL(sURL); BValU HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); (
fFrX_K] httpConnection.setRequestProperty("User-Agent","NetFox");
|gk*{3~y String sProperty = "bytes="+nStartPos+"-"; OS[
s Qo5 httpConnection.setRequestProperty("RANGE",sProperty); ?qQ{]_q1&. Utility.log(sProperty); `q}D#0 i@/% E~ W *JOK8[Qn InputStream input = httpConnection.getInputStream(); 1RkN^FZOxq //logResponseHead(httpConnection); Trirb'qO m-{DhJV L4iWR/& byte[] b = new byte[1024]; whI4@# int nRead; R&uPoY,f while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 7] y3<t { /qQx~doK nStartPos += fileAccessI.write(b,0,nRead); |6AR! //if(nThreadID == 1) ic G 9x // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); P}6#s'07~ } Dk\%,[4( IQBL;=.J. :lu!%p<$ Utility.log("Thread " + nThreadID + " is over!"); 4f j}d.? bDownOver = true; orJ|Q3c)d //nPos = fileAccessI.write (b,0,nRead); hTBJ\1
- } ]Jz=.F sO catch(Exception e){e.printStackTrace ();} `
k]
TOc } &tOo[U? } 9^Xndo]y +9HU&gQ3 U'jmgHq //打印回应的头信息 k2Q[v public void logResponseHead(HttpURLConnection con) R5sEQ| E { C5=^cH8 for(int i=1;;i++) )F9IzR-&m { Qe~C}j% String header=con.getHeaderFieldKey(i); #|\|G3Si
% if(header!=null) WGV]O| //responseHeaders.put(header,httpConnection.getHeaderField(header)); {Lju7'5L Utility.log(header+" : "+con.getHeaderField(header)); 3\2&?VAjR else >(:3H+ break; 55v=Ij?M } TrDTay } IiKU=^~w B)k/]vz)*D !5 S# public void splitterStop() T:j41`g%s { i(A`'V8GY bStop = true; <,Gjo]z } %YxKWZ/? u9_?c
G- k1[`2k:Hk } e,XT(KY Q*1Avy6] li3X} /* (fc_V[(m" **FileAccess.java UHJro9 *//文件访问(定位,写) ZV Ko$q:F package NetFox; ycN!N import java.io.*; PR;Bxy FUI/ A> V^(W)\ public class FileAccessI implements Serializable{ 5P*jGOg . 319 4] //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 `~axOp9N RandomAccessFile oSavedFile; @>`N%wH' long nPos; FkMM>X 6heK8*.T H(
LK}[ public FileAccessI() throws IOException dnANlNMk? { xfUV'=~( this("",0); ILG&l<!E } e23& d "dG*HKrr 6\h*SBI?( public FileAccessI(String sName,long nPos) throws IOException :CM2kh"Iu { _576Qa'rm oSavedFile = new RandomAccessFile(sName,"rw"); h6Vd<sV\tf this.nPos = nPos; a;i}<n7 oSavedFile.seek(nPos); =)#XZ[#F } B"7~[,he a# 0*#&?7@ &w_8E+YZ public synchronized int write(byte[] b,int nStart,int nLen) y=GDuU% { BAqwYWdS int n = -1; jp-(n z\ try{ 9aID&b+ oSavedFile.write(b,nStart,nLen); z#5qI',L n = nLen; rl"yE= } /0L]Pf; catch(IOException e) .ErR-p=- { ^b&hy&ag e.printStackTrace (); hzV%QDUpe } p,4S?cr>a kaZcYuT.9 gYL#} ) g return n; &S^a_L: } H8c -/ |$T?P*pI. f]+.
i-c= } LNgFk%EH +SFo2Wdr43 8LtkP&Wx /* Lz-(1~o **SiteInfoBean.java 17rg!'+ */ 5Shc$Awc! package NetFox; ,=6;dT neWx-O Dk~
JH9# public class SiteInfoBean { `C:J {` )q7!CG'oY f+Bv8 g private String sSiteURL; //Site's URL N[=R$1\Z private String sFilePath; //Saved File's Path o`jV d,aj private String sFileName; //Saved File's Name BBoVn^Z*R private int nSplitter; //Count of Splited Downloading File !O,`Z`T? )q+;+J`> E-rGOm" m public SiteInfoBean() =HoA2,R) {//nSplitter的缺省值为5 M/6q
^* //default value of nSplitter is 5 ()$tP3o this("","","",5); r-}C !aF] } }8'bXG+ i/DUB<>p6 }5gQ dj[Y public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) CIt@xi#I { Cp-p7g0wlg sSiteURL= sURL; }
AHR7mu= sFilePath = sPath; Daf;;
w sFileName = sName; &W y9% this.nSplitter = nSpiltter; 2)`4(38 0o!Egq_ $T'lWD * } [{-;cpM\ {Pi]i? ,3ivB8 public String getSSiteURL() nrZZk QNI { A3e83g~L return sSiteURL; XuW>GT/ } Pu]Pp`SP n ^C"v6X
SnW>` public void setSSiteURL(String value) _$qH\>se { LT '2446 sSiteURL = value; ?F%,d{^ } 2G`tS=Un ~LN
{5zg AtlUxFX0S public String getSFilePath() Rp""&0 { ~d6zpQf7> return sFilePath; RC]-9gd3Q }
Hn,;G`{ ^&8xfI6? w`K=J!5y2g public void setSFilePath(String value) -6>T0- { 7%^/Jm sFilePath = value; ^5*9BwH` } ||kUi=5 |Xk>a7X odpjEeQC public String getSFileName() vZt48g
{ 6<C|O- return sFileName; _QOZ`st } t2q{;d~. Dj@7vM%_ ;bt%TxuKb public void setSFileName(String value) 0)-yLfTn { zH+a*R sFileName = value; 3 At%TA: } %FO#j 6 iyf vcKO 3N 5b3F public int getNSplitter() qUtlh,4) { 7^Q4?(A return nSplitter; c'~6 1HA< }
UB1/0o J9*$@&@S 6` @4i'. public void setNSplitter(int nCount) \$[S=&E { N1i%b,:3 nSplitter = nCount; etWCMR } iqPMCOPZ } zU,Qph
,< K.K=\
Y2 uMe]].04 /* i_6 Y6 **Utility.java #)N}F/Od^ */ 5WvtvSO package NetFox; W #kOcw R<n'v.~"A xF8^#J6> public class Utility { 0'0GAh2 "WE*ED fTg^~XmJ public Utility() +GqUI~a { hMvLx>q3) ^9*kZV<K Pwg?a } 0B?t:XU , TmIw?#q^ //线程睡眠 :N
~A7@ public static void sleep(int nSecond) L1J~D?q { Y<0R5rO try{ .8EaFEd Thread.sleep(nSecond); SV0h'd(b } B78e*nNS#2 catch(Exception e) _)?59 { n6]8W^g e.printStackTrace (); MYVgi{ } )tW0iFY } =9AX\2w*H; soXIPf //日志 2/m4| public static void log(String sMsg) hFp\,QSx
{ )UgLs|G~ System.err.println(sMsg); sw^4h`^' } JcDcYB 1Vy8TV3D \DC0` public static void log(int sMsg) :@8N${7`$A { 14
Toi System.err.println(sMsg); Q'qz(G0 } =AIeYUh } M6o"|\ $vK(Qm [DzZ:8 /* BL^\"Xh$| **TestMethod.java |qFCzK9tD/ */ _^ny(zy( package NetFox; nqMXE82 qRnD{g|{1 @nOj6b public class TestMethod { vlS+UFH0 3BzC'nplm
vle`#c. public TestMethod() ev"f@y9Do { ///xx/weblogic60b2_win.exe X&14;lu%p try{ C_ 4(-OWq SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); j}fu|- //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 9H#;i]t & SiteFileFetch fileFetch = new SiteFileFetch(bean); g/f^|: fileFetch.start(); R Q2DTQ-$ } "vL,c]D catch(Exception e){e.printStackTrace ();} C!z7sOu eN{ewn#0. {usv*Cm } \\UOpl r(6$.zx a
0+W-#G public static void main(String[] args) D@
4sq^|2 { 3F ]30 new TestMethod(); qb1JE[2F } e=u?-8 } > t~2 点击下载更多相关资料
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