-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* aM
xd"cTzx **SiteFileFetch.java :
h(Z\D_ */ gkX7,J-0 package NetFox; 0Vrs bkS import java.io.*; {n&n^`Em import java.net.*; Z)IF3{* (t\U5-w IRdR3X56 public class SiteFileFetch extends Thread { $hHV Ie]+
*Ojl@N L+VQtp&" SiteInfoBean siteInfoBean = null; //文件信息Bean ?E_;[(Mcr long[] nStartPos; //开始位置 mo3A *|U long[] nEndPos; //结束位置 "G-h8IN^O FileSplitterFetch[] fileSplitterFetch; //子线程对象 kxN
O9w long nFileLength; //文件长度 7AS_Aw1L boolean bFirst = true; //是否第一次取文件 98)C
7N' boolean bStop = false; //停止标志 xmEom File tmpFile; //文件下载的临时信息 Y+o\?|q-E DataOutputStream output; //输出到文件的输出流 [KFCc_: q2r$j\L% //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) o
^ \+Ua public SiteFileFetch(SiteInfoBean bean) throws IOException '!ks $}$`h { j:qexhtho siteInfoBean = bean; ^%!SKhRIK //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 9pPLOXr , tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [=BMvP5 if(tmpFile.exists ()) WF-jy7+ { 'l`prp3 bFirst = false; O@
H.k<zn read_nPos(); $+f=l~/s
} "OA{[)fw" else =-_hq'il { UX[s5# nStartPos = new long[bean.getNSplitter()]; _G-y{D_S& nEndPos = new long[bean.getNSplitter()]; ^<qi&* } t1 U+7nM K9.Gjw '.;{"G.@' MoQ\~/Z| } |IV7g*J89 F~qZIggD Ll-QhcC$ public void run() y 3o3 G { }#u #m. //获得文件长度 ~,ozhj0f/ //分割文件 P$0c{B4I //实例FileSplitterFetch b- e //启动FileSplitterFetch线程 W1M322]>L //等待子线程返回 nT}Wx/aT try{ F81EZ/ if(bFirst) i9De+3VqKK { @&EIH,c nFileLength = getFileSize(); ,Pcg+^A if(nFileLength == -1) K6
>\4'q { 0}qlZFB System.err.println("File Length is not known!"); @M B)B5 } 0ug&HEl_w else if(nFileLength == -2) gpf0-g-X { ;3wO1'= System.err.println("File is not access!"); $H[q5(_~ } 5O d]rE else p4MWX12 { ZZZ9C#hK^9 for(int i=0;i<nStartPos.length;i++) b=xn(HE8| { [`qdpzUp& nStartPos = (long)(i*(nFileLength/nStartPos.length)); r8eJ&-Yi{Z } X[r0$yuE for(int i=0;i<nEndPos.length-1;i++) j*gJP
! { kE.4 # nEndPos = nStartPos[i+1]; PZJ9f8V } IQ_s]b;z nEndPos[nEndPos.length-1] = nFileLength; );VuZsmi } T]Ai{@i } _K!.TM+9 |idw?qCn Dol{y=(3e //启动子线程 DBB&6~;? fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; fglfnx0{ for(int i=0;i<nStartPos.length;i++) E/a2b(,Tg { pc0{ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Y1I)w^}: siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \.O&-oi nStartPos,nEndPos,i); Wh| T3& Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); /z4c>)fV fileSplitterFetch.start(); Y8]@y0( } 2vLun
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), z)U7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Dqii60 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |u^S}"@3sU nEndPos = " + nFileLength); @-L]mLY // fileSplitterFetch[nPos.length-1].start(); ltDohm? \>Rfa+ |k90aQO //等待子线程结束 -5 PVWL\ //int count = 0; rvy%8%e? //是否结束while循环 ^7gKs2M boolean breakWhile = false; cPuXye 5!fYTo|G> ) c\Y!vS while(!bStop) |,:p[Oy { +llb{~ZN write_nPos(); `62v5d*>a Utility.sleep(500); T\bP8D breakWhile = true; ]q{_i m<-!~ ew 4jC)"tch for(int i=0;i<nStartPos.length;i++) h2f8-}fsq { Vi-Ph;6[ if(!fileSplitterFetch.bDownOver) f+uyO7 { +"<+JRI(M5 breakWhile = false; bV&9>fC break; CAC4A } f%@~|:G: } =dDPQZEin if(breakWhile) `}#rcDK break; lMGO4U[z
m","m ?l?l<`sTO //count++; =3-?$ //if(count>4) {<gv1Yht // siteStop(); Y06^M?} } {@)ZXg 4 O8ct,Y hFv{?v System.err.println("文件下载结束!"); oH%[8!# } O8$~dzf,2 catch(Exception e){e.printStackTrace ();} w=WF$)ZU } IUv#nB3 )wM%Ul<s Mc asnjC //获得文件长度 b-VygLN public long getFileSize() !P=Cv= { VZWo.Br'W int nFileLength = -1; *
&:_Vgu try{ 4-x<^
ev= URL url = new URL(siteInfoBean.getSSiteURL()); b/:wpy+9Z HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); b~,e(D9DG httpConnection.setRequestProperty("User-Agent","NetFox"); 196a~xNV %5gdLm!p zFExYYd
int responseCode=httpConnection.getResponseCode(); lxL.ztL if(responseCode>=400) ^%9oeT{ { ?QT6q]|d0+ processErrorCode(responseCode); w/m@(EBK return -2; //-2 represent access is error '?veMX } N:| :L:<1 ~ h3G}EH _Pqq* String sHeader; Uw.')ZY= Z5 IWoY OA3J(4!"W for(int i=1;;i++) MZ,1 mR { b`#YJpA //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,7&\jET5^0 //Utility.log(in.readLine()); T[|#DMg$F sHeader=httpConnection.getHeaderFieldKey(i); Qs,\P^n if(sHeader!=null) kx;X:I(5&P { 3?*dv14 if(sHeader.equals("Content-Length")) 2 3PRb<q { HD=F2p nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +zMPkbP6 break; #! R>`l(S } =Z:]% } Mc@9ivwL# else (46'#E z[F break; $3HqVqF^R } *XhlIQ } JKM(fX+ catch(IOException e){e.printStackTrace ();} 0AQ4:KV(Y catch(Exception e){e.printStackTrace ();} I
</P_:4G f $Agcy "i;.> Utility.log(nFileLength); sq_>^z3T c]|vg=W 1PwtzH.w return nFileLength; 7<^+)DsS? } 2 L4[~> \yJ
4+vo2Q DPzW,aIgv //保存下载信息(文件指针位置) !+PrgIp> private void write_nPos() ISpV={$Zd { y5j:+2|I try{ hUlRtt output = new DataOutputStream(new FileOutputStream(tmpFile)); Zt3sU_ output.writeInt(nStartPos.length); a|u#w~ for(int i=0;i<nStartPos.length;i++) M?h{'$T { G7 UUx+ X // output.writeLong(nPos); ['}|#3*w output.writeLong(fileSplitterFetch.nStartPos); $?PI>9g! output.writeLong(fileSplitterFetch.nEndPos); ?l9sj]^w } XZ
|L D# output.close(); ]AY 4bm } Ww-x+U\l catch(IOException e){e.printStackTrace ();} vTK%8qoZ catch(Exception e){e.printStackTrace ();} k2D*`\
D } tw$EwNI[ I3nE]OcW@ hH1Q:}a //读取保存的下载信息(文件指针位置) gFTU9k< private void read_nPos() lKejWT`; { JI!1
.]& try{ vMp=\U-~^ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); @GKDSS4jv int nCount = input.readInt(); \|Af26 nStartPos = new long[nCount]; .z,-ThTH@\ nEndPos = new long[nCount]; ElW\;C:K* for(int i=0;i<nStartPos.length;i++) MeBTc&S< { $\P/
%eP nStartPos = input.readLong(); %HG+|)b nEndPos = input.readLong(); 7He"IJ } ,"`20.Lv input.close(); E D>7 } 5<(*
+mP` catch(IOException e){e.printStackTrace ();} o!BCR: catch(Exception e){e.printStackTrace ();} &s`)_P[ } bPFGQlmIO R@3HlGuRKw Y5GN7. private void processErrorCode(int nErrorCode) @o0HDS { ejV`W7U System.err.println("Error Code : " + nErrorCode); YdCl }
(sKg*G2 j-1V,V= ~%*l>GkP* //停止文件下载 U%@PY9# public void siteStop() y ~
K8 { mx}5":} bStop = true; h~#F2#. for(int i=0;i<nStartPos.length;i++) $=plAi fileSplitterFetch.splitterStop(); 5>9Q<* U^7hw(}me RDbNC v# } _E?tVx.6 } nr]=O`Mvh //负责部分文件的抓取 %_E5B6xi{ **FileSplitterFetch.java y05!-G:Y\ */ %_Vz0
D!7 package NetFox; uN<=v&]q [s^pP2 /1LN\Eu import java.io.*; ]&]G import java.net.*; 961&rR}d zRjbEL -I5]#%eX^ public class FileSplitterFetch extends Thread { 9\!&c<i= ,.P]5 lE ?/&X_O String sURL; //File URL PJB_"?NTTC long nStartPos; //File Snippet Start Position 1^$hbRq long nEndPos; //File Snippet End Position rwDLBpk int nThreadID; //Thread's ID N#M>2b<A/T boolean bDownOver = false; //Downing is over EN`JzLjP boolean bStop = false; //Stop identical ZiR}S FileAccessI fileAccessI = null; //File Access interface G%~V b qY-aR; :/(G#ZaV public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException IA0vSF: { -btNwE6[. this.sURL = sURL; TE&E f$h this.nStartPos = nStart; =M
8Mt/P this.nEndPos = nEnd; ;*qXjv&
K nThreadID = id; v>K|hH fileAccessI = new FileAccessI(sName,nStartPos);//定位 g=D]=&H } M{p6&eg zk$h71<{. Ia](CN*;6 public void run() c= 2E/x? { TSFrv8L while(nStartPos < nEndPos && !bStop) BMAWjEr { i-0
:Fs `P\H{ `{YOl\d_ try{ :c]y/lQmV URL url = new URL(sURL); g[i;>XyP HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3\ajnd| httpConnection.setRequestProperty("User-Agent","NetFox"); D7pQWlN\ String sProperty = "bytes="+nStartPos+"-"; Y_*KAr'{P httpConnection.setRequestProperty("RANGE",sProperty); @GAj%MK$ Utility.log(sProperty); 'dwsm7Xd 5L6.7}B 9*iVv)jd InputStream input = httpConnection.getInputStream(); 1N _"Mm{ //logResponseHead(httpConnection);
[uqr Q']'KU. E7h@c>IK byte[] b = new byte[1024]; 0*:n<T9 int nRead; h(q4
B~ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) BpA7
z / { KD#zsL)3 nStartPos += fileAccessI.write(b,0,nRead); D`n<!"xg@$ //if(nThreadID == 1) d3E N0e+^ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); oa+'.b~ } =KR^0<2r ?z)2\D <EyJ $$ Utility.log("Thread " + nThreadID + " is over!"); d.ywH; bDownOver = true; @ ~{TL //nPos = fileAccessI.write (b,0,nRead); FBP #_"z } ~*h)`uM catch(Exception e){e.printStackTrace ();} Flpl,|n
a } ST#)Fl } ,^4"e
( 5D3&E_S :fX61S6) //打印回应的头信息 ce4rhtkV public void logResponseHead(HttpURLConnection con) q@1A2L\Om { .))k for(int i=1;;i++) M97+YMY) { uR")@Tc String header=con.getHeaderFieldKey(i); sfG9R" if(header!=null) LU*mR{B //responseHeaders.put(header,httpConnection.getHeaderField(header)); vIi&D; Utility.log(header+" : "+con.getHeaderField(header)); QN;NuDHN else i{:?Iw 'ay break; 3|e~YmZx } 0* ^f
EoV } :;#^gvH *>iJ=H M2:3k public void splitterStop() l+(B~v { 5FJ%"5n& bStop = true; !pa7]cZ } .}R'(gN\6 qYqd -R 9%k4Ic%P } T8LvdzS kVWrZ>McK '#K~hep /* ZnbpIJ8cV **FileAccess.java JKYtBXOl *//文件访问(定位,写) M9Z9s11{H package NetFox; pOy(XUV9O import java.io.*; |<]wM(GxE |a1zJ_t4 /$8& r public class FileAccessI implements Serializable{ F":dS-u&L 1:h(8%H@" //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Nde1`W]: RandomAccessFile oSavedFile; K/(Z\lL long nPos; O> wGJ. VF-[O }sZy |dd public FileAccessI() throws IOException A?ESjMy(R { ;%n(ARZ# this("",0); $H,9GIivD } [eF|2: Y% [H: &6Wim<* public FileAccessI(String sName,long nPos) throws IOException jN+2+P%OL { up3mum oSavedFile = new RandomAccessFile(sName,"rw"); D1fUEHB}A8 this.nPos = nPos; )A;jBfr oSavedFile.seek(nPos); fK4O
N'[R: } Xp|$z ~ 3v~}hV/RUy )6he;+ public synchronized int write(byte[] b,int nStart,int nLen) w/0;N`YB { 9Xh<vh8& int n = -1; ,(yaWd6 try{ ]G~u8HPH!m oSavedFile.write(b,nStart,nLen); j1@PfKh n = nLen; {>&M:_`k } 'xOH~RlE catch(IOException e) :)Nk { t1l4mdp e.printStackTrace (); Gm\jboef] } {2&MyxV ^6,}*@ mc6W" return n; s[*I210 } F.R0c@&W aOW~! f/M \?k"AtL } tUFXx\p "FfP&lF/ o,
qBMo^. /* `MMZR=LA **SiteInfoBean.java hcD.-(-;) */ iEBxBsz_ package NetFox; e]d\S]5 k*T&>$k}^ "CT`]:GGK public class SiteInfoBean { ^W,x kh*td(pfP9 FwSV
\N+#' private String sSiteURL; //Site's URL QtqE&j private String sFilePath; //Saved File's Path
2Y9@[ private String sFileName; //Saved File's Name gG6BEsGa, private int nSplitter; //Count of Splited Downloading File h6gtO$A|p= ]FO)U xHwcP2 1 public SiteInfoBean() A `=.F {//nSplitter的缺省值为5 {$-\)K //default value of nSplitter is 5 C'0=eel[ this("","","",5); .$-%rU:*} } 1\Vp[^#Vx !%yd'"6Dl ez *O'U public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) cU=/X{&Om { (@u" sSiteURL= sURL; v%2Jm!i+ sFilePath = sPath; o7 X5{ sFileName = sName; u!VY6y7p this.nSplitter = nSpiltter; ;hU~nj+{ fxX4 !r kv/mqKVr } A
v%'#1w<" ,G(bwE9~ u*H
V public String getSSiteURL() c"@,|wCUi { N%+ C5e< return sSiteURL; 8U&93$ } `wLa.Gzj J|I&{ e;)&Hc:Z public void setSSiteURL(String value) ,n+~S^r { E@$HO_;& sSiteURL = value; c`G~.paY| } V4
Wn |zSoA=7? <D M:YWNa public String getSFilePath() i/WiSwh: { 8Ow0A return sFilePath; GGwHz]1L } be{t yV
< {dV= naKB2y]l public void setSFilePath(String value) 2(sq*!tX { cn!Y7LVr sFilePath = value; k7Z1Y!n7 } T$;N8x[ Lv?e[GA ZYX(Cf public String getSFileName() 0E#3XhU { dy*CDRU4 return sFileName; at `\7YfQp } /WKp\r(Hp ~,.}@XlgT. #>\+6W17U public void setSFileName(String value) v5o@ls { 86\B|! sFileName = value; Arb-,[kwN } KFMEY\ 6\h X>y6-%@ b}#ay2AR public int getNSplitter() u0& dDZ { oVSq#I4 return nSplitter; ;iEFG^'tG } KUqD<Jj? HNtl>H ?rn#S8nNx< public void setNSplitter(int nCount) y7CrH=^jc { ()v{HBi nSplitter = nCount; & ]/Z~V t } C|A:^6d3= } _~E&?zR2>" p#95Q PH}^RR{H[ /* _mw(~r8R **Utility.java ~?)ST?& */ \!4sd2Yi package NetFox; %v(\;&@ (7g1eEK% c);(+b public class Utility { aBLE:v qrmJJSJ b 64~Y|8 public Utility() )cy_d! { 3;J)&(j0 {~ngI< A;A>Q`JJF } !mX 2 _ADK8a6%) //线程睡眠 pPdOwK# public static void sleep(int nSecond) ~\z\f}w { jci'q=Vpu try{ JUlV$b.)J Thread.sleep(nSecond); 4V`ypFme } YbrsXp" catch(Exception e) qeyBZ8BG { HEjrat;5 e.printStackTrace (); Wh)QCp0|n } ? h$>7| } 7QlA/iKqK 5!PU+9Kh //日志 m{bw(+r public static void log(String sMsg) +FoR;v)z=F { t3 q0|S System.err.println(sMsg); IRZ?'Im } ;?9u#FRtw |'2E'?\/x P2`!)teN public static void log(int sMsg) ~ 0x9`~
{ b:S#Sz$ System.err.println(sMsg); `~"l a>} } "yI)F~A } '%>$\Lv Q
b5AQf30 PQ2u R
/* *HwTq[y **TestMethod.java IdlW[h3`[ */ m3k}Q3&6Z package NetFox; \7}X^]UV x bqMoO7&c TWC^M{e public class TestMethod { 7ST[XLwt%} TCSm#?[B m(Cn'@i`"0 public TestMethod() $ #C$V> { ///xx/weblogic60b2_win.exe ) tGC&l+?/ try{ o(.
PxcD SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); JeJc(e //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 7K`A2 SiteFileFetch fileFetch = new SiteFileFetch(bean); L44-: 3 fileFetch.start(); a<[@p } Ywf.,V catch(Exception e){e.printStackTrace ();} |/g\N,] Zjt3U;Y DiAPs_@ } pbivddi2 eA>O<Z1> '$M=H. public static void main(String[] args) :Q\b$=,: { >sP-)ZeuU[ new TestMethod(); `n7z+ } \HDRr*KO }
Y>+\:O
点击下载更多相关资料
|