-
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
|
/* 69 J4p=c, **SiteFileFetch.java Of#"nu */ tm.&k6% package NetFox; cR/e
Zfl import java.io.*; Gh}* <X;N import java.net.*; hyY^$p+ zVis"g` P]7s1kgaS public class SiteFileFetch extends Thread { ZU`HaL$ I7C+XUQkQ 9hgIQl SiteInfoBean siteInfoBean = null; //文件信息Bean 1[-RIN;U8 long[] nStartPos; //开始位置 rIX 40,` long[] nEndPos; //结束位置 !Pu7%nV. FileSplitterFetch[] fileSplitterFetch; //子线程对象 \==Mgy2J8 long nFileLength; //文件长度 r;O?`~2'4 boolean bFirst = true; //是否第一次取文件 M"foP@ boolean bStop = false; //停止标志 Pr,C)uch File tmpFile; //文件下载的临时信息 _MTvNs DataOutputStream output; //输出到文件的输出流 q)PSHr=Z yMOYTN@] //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) D>kkA|> public SiteFileFetch(SiteInfoBean bean) throws IOException UMH~Q`" { tPDB'S:&3 siteInfoBean = bean; X^C $|: //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ]j.!
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); w$`u_P|@E: if(tmpFile.exists ()) }mS
Q!"f: { ltHuN;C\ bFirst = false; n.A*(@noe read_nPos(); xOZvQ\% } Q;@w\_OR else HS|x { :I^4ILQCD nStartPos = new long[bean.getNSplitter()]; M#yUdl7d nEndPos = new long[bean.getNSplitter()]; <#~n+, } R%JEx3)0m USXPa[ BT(G9Pj; hP/uS%X } Y5TBWcGU% (CE2]Nv9") .yb8<q s public void run() s%?<:9 { V{{UsEVO //获得文件长度 WX+@<y}% //分割文件 t5QGXj //实例FileSplitterFetch FYK}AR<= //启动FileSplitterFetch线程 ve4QS P //等待子线程返回 *T{KpiuP try{ Ds\f?\Em if(bFirst) )EG-xo@X { xH-} <7 nFileLength = getFileSize(); 5;9.&f if(nFileLength == -1) V.[b${ { |h:3BV_ System.err.println("File Length is not known!"); }U b "Vb } [{J1b else if(nFileLength == -2) &jDRRT3 { tdC
kvVE System.err.println("File is not access!"); 1'5!")r } * =O@D2g0 else gKb5W094@ { l_x>.' a for(int i=0;i<nStartPos.length;i++) h#8{fr)6 { hy:K) _
nStartPos = (long)(i*(nFileLength/nStartPos.length)); bre6SP@ } U7G|4( for(int i=0;i<nEndPos.length-1;i++) !" : arK { 1xwq:vFC. nEndPos = nStartPos[i+1]; &J=x[{R } S*rc XG6Q^ nEndPos[nEndPos.length-1] = nFileLength; YGLR%PYv" } gOk^("@ } n6*;
~h5 q5w)i /h@rLJ)o> //启动子线程 q{.~=~ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; %;G!gJeE
for(int i=0;i<nStartPos.length;i++) 2K'}Vm+ { ^[zF IO fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Pq(
)2B siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), {K2F(kz?T nStartPos,nEndPos,i); " 2@Ys*e Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Vs[!WJ
7 fileSplitterFetch.start(); POQ1K
O } LZu_-I // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5TdI siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); W&^2Fb // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", F^');8~L nEndPos = " + nFileLength); @yjui // fileSplitterFetch[nPos.length-1].start(); #/pZ#ny II_MY#0X 4>@-1nt} //等待子线程结束 KL*UU,qU //int count = 0; k?=V?JWY //是否结束while循环 &nZ.$UK< boolean breakWhile = false; j8p'B-yS ]%%cc k<S!| while(!bStop) Z8Clm:S { AwL;-|X write_nPos(); [h2V9>4: Utility.sleep(500);
@KYmkxW breakWhile = true; e 3>k" YuDNm}r[ ?)5M3lV3k for(int i=0;i<nStartPos.length;i++) iF]vIg#h { G,i%:my7 if(!fileSplitterFetch.bDownOver) gM3gc; { Qod2m$>wp} breakWhile = false; >Y/1%Hp9 break; z'X_s.9F } :ui1]its4 } ]#
T9v06w if(breakWhile) WJL,L[XC break; ]t3
NA*mM P.1iuZ "w ]j:Ikb} //count++; `P4qEsZE>` //if(count>4) VVje|T^{Z // siteStop(); }fs;yPl, } )+9D$m=P; egi?Qg G8?<(.pi@ System.err.println("文件下载结束!"); z95V 7E } Bf88f<Z catch(Exception e){e.printStackTrace ();} Qi7^z; } J0|}u1?l {1YT a:evl Vd^`Hv&i //获得文件长度 @w:sNXz- public long getFileSize() ;h3*MR { &f qmO>M int nFileLength = -1; :<IW' try{ ikRIL2Y URL url = new URL(siteInfoBean.getSSiteURL()); |@-WC. HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o6KBJx httpConnection.setRequestProperty("User-Agent","NetFox"); jIc;jjAF zFuUv_t ~K],hi^<P int responseCode=httpConnection.getResponseCode(); 9e :E% 2 if(responseCode>=400) C 127he { l7J_s?!j processErrorCode(responseCode); T[q-$8U return -2; //-2 represent access is error I}v'n{5( } )SUN+YV^ Q84KU8?d W{m0z+N[B String sHeader; W\<#`0tUt O x$|ZEh =3SL&
:8 for(int i=1;;i++) #-HN[U?Gs { =\%>O7c,8Y //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); qryt1~Dq //Utility.log(in.readLine()); 3Ob"r` sHeader=httpConnection.getHeaderFieldKey(i); -;`W"&`ss if(sHeader!=null) 4+k:j=x { '7*=m^pc if(sHeader.equals("Content-Length")) $=m17GD { RLHe;-*b]I nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); M*S5&xpX break; fp![Pbms. } dju&Ku
} >;3c;nf else >6DY3\ break; hy )RV=X } xf]4!zE } VD#^Xy4% r catch(IOException e){e.printStackTrace ();} !d0@^JbM" catch(Exception e){e.printStackTrace ();} l*m|b""].u ToJru (&nl}_`7?, Utility.log(nFileLength); S~Hj.
d4/ 0\~Zg =W|Q0|U return nFileLength; : }IS=A } .CpF0 7:j #1N[p 6Rf5 //保存下载信息(文件指针位置) oV!9B -< private void write_nPos() 5~"=Fm<uD { ]Ojt3)fB try{ sk3;;<H output = new DataOutputStream(new FileOutputStream(tmpFile)); GQZUC\cB output.writeInt(nStartPos.length); J;kbY9e for(int i=0;i<nStartPos.length;i++) j5)qF1W, { 7=AKQ7BB>b // output.writeLong(nPos); 5#F+-9r output.writeLong(fileSplitterFetch.nStartPos); `cv:p|s output.writeLong(fileSplitterFetch.nEndPos); ha),N<' } >PJ-Z~O'
output.close(); 5k(#kyP } fIcv}Y catch(IOException e){e.printStackTrace ();} E0pQRGPA catch(Exception e){e.printStackTrace ();} 5y'Yosy: } l&A` :gVjBF2 UK<"|2^sT //读取保存的下载信息(文件指针位置) f\^QV private void read_nPos() E{ ,O} { 7@"X~C try{ z} \9/` DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); <FK><aA_i* int nCount = input.readInt(); W%W.
+f nStartPos = new long[nCount]; QaO`:wJj nEndPos = new long[nCount]; ^>p [b for(int i=0;i<nStartPos.length;i++) ]x G4T>S { YBO53S]= nStartPos = input.readLong(); MnI $% nEndPos = input.readLong(); L' pZ } eBV{B70k input.close(); 7| T:TbY> } i=a LC*@ catch(IOException e){e.printStackTrace ();} @6!JW(,]\ catch(Exception e){e.printStackTrace ();} `+o.w#cl } =KZ4:d5 Vel;t<1 u@EM,o private void processErrorCode(int nErrorCode) N
[u
Xo { \}=b/FL=U System.err.println("Error Code : " + nErrorCode); Chup %F } |@ HdTGD w3Ohm7N[ _2Z3?/Y //停止文件下载 +*DX(v"BH public void siteStop() >cNXB7]E> { -DnK)u\@ bStop = true; {ybuHC for(int i=0;i<nStartPos.length;i++) q':wSu u fileSplitterFetch.splitterStop(); dL`
+^E> ,f+5x]F?m 1#<E]<='t } w0!,1
Ry } 9%qMZP0] //负责部分文件的抓取 Mg$9'a"[\ **FileSplitterFetch.java uLM_KZ */ Fzs'@* package NetFox; Fc~w`~tv H=#Jg;_w }A7qIys$4 import java.io.*; /8>/"Z2S import java.net.*; 0Y2^}u@5 [BBKj)IK af(JoX*U public class FileSplitterFetch extends Thread { e;5Lv9?C8 )''wu\7A)' %6'D!H?d String sURL; //File URL )1}g7: long nStartPos; //File Snippet Start Position J#DcT@ long nEndPos; //File Snippet End Position HJR<d&l;p int nThreadID; //Thread's ID zYdtQjv boolean bDownOver = false; //Downing is over bl?%:qb.V boolean bStop = false; //Stop identical )^Pvm FileAccessI fileAccessI = null; //File Access interface )<F\IM }Xi#x*-D i_Z5SMZ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException t`,IW{ { ZD%_PgiT this.sURL = sURL; q'U5QyuC this.nStartPos = nStart; mN
6`8
[ this.nEndPos = nEnd; it@} dZ nThreadID = id; Y0\\(0j64 fileAccessI = new FileAccessI(sName,nStartPos);//定位 &R*5;/
! } b,R'T+4[ wPJRp]FA #cG479X" public void run() ~+egu89'TU { jYX9;C;J while(nStartPos < nEndPos && !bStop) ~!F4JRf { 5I1J)K; [?@wCY4= B kxhF try{ ,nR8l URL url = new URL(sURL); D(6x'</>? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |u r~s$8y- httpConnection.setRequestProperty("User-Agent","NetFox"); YB~t|m65 String sProperty = "bytes="+nStartPos+"-"; j(C
UYm httpConnection.setRequestProperty("RANGE",sProperty); ~<-
ci Utility.log(sProperty); V?59.TJ
t} i97 ; 7&1~O# InputStream input = httpConnection.getInputStream(); H#6^-6;/ //logResponseHead(httpConnection); .Pes{uHg ;sR6dT) ?_>^<1I1 byte[] b = new byte[1024]; |QOJ9~hxD int nRead; E ' JC while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) qmeml_(W { ,Kf8T9z` nStartPos += fileAccessI.write(b,0,nRead); -wQ^oOJ //if(nThreadID == 1) 7EP|X. // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]esLAo } ` ]P5, +`zi>= L1kM~M Utility.log("Thread " + nThreadID + " is over!"); #2R%H.*t bDownOver = true; w<e;rKr //nPos = fileAccessI.write (b,0,nRead); =l4\4td9p } iEVA[xy=D catch(Exception e){e.printStackTrace ();} | 58!A] } AY'?Xt } ,&&M|,NQ&s ob0 8xGj +1Rrkok //打印回应的头信息 eSX[J6 public void logResponseHead(HttpURLConnection con) !x$:8R { `XSc > for(int i=1;;i++) Lp`<L -s { xGEmrE<; String header=con.getHeaderFieldKey(i); ^]qV8 if(header!=null) 2\63&C^ //responseHeaders.put(header,httpConnection.getHeaderField(header)); 3zTE4pHzu+ Utility.log(header+" : "+con.getHeaderField(header)); fj-pNl6Gf else 2"+x(Ax break; P%@rH@^Y } :{b6M/ } RmWfV XMEK5Z9Dd fb"J Bc}X public void splitterStop() 6~F#F)C' { c Z6p^ bStop = true; |\%F(d330 } 3> \fP#oQ C8qTz".5$ dxn0HXU } =Etwa :-u-hO5*8 G?-`>N-u /* Vv]$\`d# **FileAccess.java Q5y
q"/=[a *//文件访问(定位,写) ";_K x={ package NetFox; PG6L]o^ import java.io.*; 7mn,{2 #5-A& +t>*l>[ public class FileAccessI implements Serializable{ UOu6LD/|h 6c2ThtL //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 R] Disljq RandomAccessFile oSavedFile; "VDk1YX_&l long nPos; G&@-R{i I[=Wmxa?r nGx ~)T public FileAccessI() throws IOException Ep<!zO| { QP$nDK< this("",0); s`#ntset0 } 4\1wyN /}M b~/Wnp5 AJ\VY;m7F public FileAccessI(String sName,long nPos) throws IOException (L
y%{ Y { i<#h]o
C} oSavedFile = new RandomAccessFile(sName,"rw"); nOoKGT this.nPos = nPos; G}P)vfcH oSavedFile.seek(nPos); MOP]\ypn } $v:gBlj%" }O.LPQ0 VR4E
2^ public synchronized int write(byte[] b,int nStart,int nLen) :'d76pM- { emv ;m/&8 int n = -1; (|<h^]
y3 try{ Bw3F7W~l oSavedFile.write(b,nStart,nLen); p;qRm}
0} n = nLen; h-r6PY=i } Nt
zq"ces) catch(IOException e) QT1:>k { l5=u3r9WYC e.printStackTrace (); GB<R7J } zP:~O 1UW s_|X! e(}oq"'z return n; k;;nE o~6 } WYwzo V- _x\-!&[p +R
"AA_A? } rWoe
?g #Rin*HL## /B,B4JI)/ /* ?CH?kP **SiteInfoBean.java j`2B}@ 2 */ MV0<^/p| package NetFox; 4ef*9|^x# a9#W9eP #0P!xZ'|{ public class SiteInfoBean { ;JOD!| "H5&3sF2 a3O nW\N private String sSiteURL; //Site's URL |x d@M-ln private String sFilePath; //Saved File's Path j:HH#U private String sFileName; //Saved File's Name A$7Eo`Of private int nSplitter; //Count of Splited Downloading File 7<EJo$-j <ZigCo w M[h1>}$Lz public SiteInfoBean() ,^.S0;D,Z {//nSplitter的缺省值为5 s8t f@H4r //default value of nSplitter is 5 5R,la\!bQ this("","","",5); $42Au2Jg } E7rX1YdR o-SRSu C!!mOAhJ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) H9%l?r5 { [urH a sSiteURL= sURL; =LXvlt'Q34 sFilePath = sPath; `]K,'i{R sFileName = sName; 4dW3'"R"L this.nSplitter = nSpiltter; yDd=&
T
4JGE2ArR G$cxDGo } HG3.~ 6X sL)Rg(rkx 5{')GTdX> public String getSSiteURL() X!T|07#c { TkA9tFi return sSiteURL; \4OK!6LkI } 7 ,$ axvLw R `;o!B}[ H \r `7 public void setSSiteURL(String value) Dp!;7e s| { _kh>Z sSiteURL = value; BiA>QQ } Ru)(dvk}S e@[9C(5E" PPN q:, public String getSFilePath() \C|;F { w3<Z?lj: return sFilePath; EtGH\?d~] } ?Rlgv5P! 2[.5o z` R @"`~#$$ public void setSFilePath(String value) >[K0=nA { 9#u }^t sFilePath = value; {U(Bfe^a, } w]n4KR4 .SG0}8gW 9^oo-,Su_ public String getSFileName() y0;,dv] { 8,=G1c return sFileName; (%i!%{!] } l#Yx
TY 7k>zuzRyF Q5g,7ac8L public void setSFileName(String value) bpGzTU { CP +4k.)*O sFileName = value; Wt(Kd5k0'2 } ?;Un#6b -zprNQW R3$@N public int getNSplitter() .Nc_n5D6 { -=}b;Kf- return nSplitter; rWJ*e Y } \kxh#{$z? TNx _Rc} ~+<<bzY public void setNSplitter(int nCount) g+.0c=G( { T\jAk+$Jo nSplitter = nCount; mIRAS"Q!m } C}9Kx }q } &uPDZ#C- dnix:'D1 6zuze0ud /* Hv3W{| **Utility.java (e(Rr4 */ )R~a;?T_c0 package NetFox; 1f<RyAE?5 cu<y8
:U< O5O.><RP public class Utility { ikr7DBLt 4X*Q6rW Uh*@BmDA public Utility() N^lAG"Jao[ {
F,zG;_ 7g5@vYS+ 4 HW; } 0#<WOns1
#J\s%60pt //线程睡眠 Jns/v6 public static void sleep(int nSecond) ~ibF M5m { nz[
m3] try{ :Z[(A"dA Thread.sleep(nSecond); hl**zF } OMvT;Vgg catch(Exception e)
A0OB$OK { 0TmZ*?3!4 e.printStackTrace (); O~atNrHD } *.o"ZVl } 5*Btb#: G~(&3 //日志 JDKLKHOMZ public static void log(String sMsg) 7/
t:YBR { fQO
""qh System.err.println(sMsg); /~tP7<7A } :WO{x g *t]v}ZV* !UVk9 public static void log(int sMsg) >O3IfS(l { z-I|h~ii System.err.println(sMsg); &y\igX1 } M|H2kvl } Y0}4WWV 8 ip^] Fo(y7$33* /* /S[?{Q A **TestMethod.java 14-]esSa */ TA| s@T{ package NetFox; ; [FLT:$ ly=a>}F_ #N$9u"8C public class TestMethod { zIm-X,~I$ QvJZkGX gvlFumg2 public TestMethod() Wj tft% { ///xx/weblogic60b2_win.exe %{"dP%|w4} try{ }jiK3?e SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ^7^2D2[ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); TL'0T,Jo SiteFileFetch fileFetch = new SiteFileFetch(bean); OJ>iq@> fileFetch.start(); a%*_2# } (0}j]p'w catch(Exception e){e.printStackTrace ();} SiR\a!, C g>T \447]<u } 4DM*^=9E ~of,,& ^)< |