-
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
|
/* p<r^{y **SiteFileFetch.java {z>!Fw */ |YLja87 package NetFox; ;y(;7n_ a import java.io.*; 'u.Dt*.Uq import java.net.*; L!:NL#M ~Z5AIm R| B=O zP+ public class SiteFileFetch extends Thread {
P7w
RX F{ A
l;a~45 6c!F%xU} SiteInfoBean siteInfoBean = null; //文件信息Bean ,
>WH)+a long[] nStartPos; //开始位置 \HB
fM& long[] nEndPos; //结束位置 u43Mo\"<&% FileSplitterFetch[] fileSplitterFetch; //子线程对象 `!cdxKLR long nFileLength; //文件长度 1{M?_~g4 boolean bFirst = true; //是否第一次取文件 4
Y=0>FlY0 boolean bStop = false; //停止标志 r]Hrz'C` File tmpFile; //文件下载的临时信息 $*eYiz3Ue DataOutputStream output; //输出到文件的输出流 ~+{*KPiD N&G'i.w/ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) oO;L l?~ public SiteFileFetch(SiteInfoBean bean) throws IOException B!mHO*g { At@0G\^ siteInfoBean = bean; *m]Y6 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); +7%?p"gEY\ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Y*@7/2, if(tmpFile.exists ()) v9H
t~\> { mW]dhY 3X bFirst = false; xp1/@Pw? read_nPos(); jUE:QOfRib } S$SCW<LuN else 2W0nA t { ?8$`GyjS nStartPos = new long[bean.getNSplitter()]; +FNGRL nEndPos = new long[bean.getNSplitter()]; DSHvBFQ } jS]Saqd 7W}%ralkg {*bx8*y1 \X\< +KU } *i*\dl A'CD,R+gR ]+`K\G ^X public void run() mKtMI!FR { TAh'u|{u2 //获得文件长度
gwIR3u //分割文件 .pZYPKMaE //实例FileSplitterFetch Up%XBA //启动FileSplitterFetch线程 RNB-W% //等待子线程返回 }s?3 try{ ~I N g9| if(bFirst) Ag T)J { dlyGgaV*X nFileLength = getFileSize(); [&~x5l
8\C if(nFileLength == -1) .]exY
i { UQkd$w< System.err.println("File Length is not known!"); .qe+"$K'n } CV
HKP[- else if(nFileLength == -2) An>ai N] { @G]*]rkKb System.err.println("File is not access!"); EyR/ } D|U bh ] else M%54FsV { /Q9Cvj)" for(int i=0;i<nStartPos.length;i++) ^+%bh/2_W { \aPH_sf, nStartPos = (long)(i*(nFileLength/nStartPos.length)); V* JqC } [ {"x{; for(int i=0;i<nEndPos.length-1;i++) ({Yfsf, { 3R$R?^G nEndPos = nStartPos[i+1]; Otr=+i
ZI } hc$m1lLn nEndPos[nEndPos.length-1] = nFileLength; {pi_yr3 } z( ^?xv } CUdpT$ $x3 PC"=B[OlJ RJ3uu NK7 //启动子线程 w9u|E46 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; KiMlbF.~V for(int i=0;i<nStartPos.length;i++) ]?}pJ28 { nQ'NS fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V!*1F1 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Q7`)&^
Hx nStartPos,nEndPos,i); nT4Ryld Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bCTN^ fileSplitterFetch.start(); 2T%sHp~qt } 0 GFho$f // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), /Xc9}~t6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); .|DrXJ\c // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", w"D1mI!L
7 nEndPos = " + nFileLength); TqS s*as5 // fileSplitterFetch[nPos.length-1].start(); e7n0=U0 }VWUcALJV ])v61B //等待子线程结束 * >2FcoN; //int count = 0; !:xE
X~ //是否结束while循环 v}5YUM0H ` boolean breakWhile = false; lV3k4i RH @ZYJY E>#@
H while(!bStop) .`u8(S+ { 9I5AYa? write_nPos(); 55`p~:&VQ Utility.sleep(500); X16O9qsh breakWhile = true; usK P9[T$ 6]GHCyo MdEds|D for(int i=0;i<nStartPos.length;i++) 2u0B=0x { it>Bf; if(!fileSplitterFetch.bDownOver) 1f"}]MbLR { 3DCR n : breakWhile = false; A#Ga!a break; mJ[_q> } Bn.R,B0PL } Dbx zqd if(breakWhile) gs.+|4dv break; <)_#6)z: ;K4=fHl &_@M
6[- //count++; V3|"
v4 //if(count>4) HsRoiqo // siteStop(); z 36Y/{>[ } VWYNq^<AT .R4,fCN B"88 .U}$ System.err.println("文件下载结束!"); s/3sOb}sA } (Xzq(QV catch(Exception e){e.printStackTrace ();} p vWj)4e } o8A8fHl -4L27C =_6 Q26 //获得文件长度 :YLYCVi| public long getFileSize() "WPWMQ+ { q+;lxR5D int nFileLength = -1; RZ9_*Lq7+ try{ 1} _<q k9 URL url = new URL(siteInfoBean.getSSiteURL()); @.dM1DN) HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); LF(S"Of httpConnection.setRequestProperty("User-Agent","NetFox"); P;X0L{u0H .345%j g<w1d{Td int responseCode=httpConnection.getResponseCode(); +,i_G?eX if(responseCode>=400) .G<Or`K^i { }`2+`w%uZ processErrorCode(responseCode); Ir-
1@_1Q return -2; //-2 represent access is error V6Of(;r } Pc+,iK> uc=u4@.> D-m%eP. String sHeader; ,d
HAD hA`9[58/ @te}Asv for(int i=1;;i++) =*UVe%N4 { b$*G&d5 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); F"tM?V.| //Utility.log(in.readLine()); -O@/S9]S) sHeader=httpConnection.getHeaderFieldKey(i); %u Dd#+{ if(sHeader!=null) !:_krLB< { ?Qpi(Czbpq if(sHeader.equals("Content-Length")) 5a&gdqg] {
ILHn~d IC nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); )%:
W;H break; F=UW[zy/[ } h`tf!M D] } bvJ*REPL? else {PL,3EBG break; K$$%j "s } ;~}!P7z } iZ(p]0aP7 catch(IOException e){e.printStackTrace ();} (d[JMO^@8 catch(Exception e){e.printStackTrace ();} YIl,8!
z~ v1NFz>Hx \J6e/ G Utility.log(nFileLength); #vR5a}BAk JgldC[|7 n8&x=Z}Xs return nFileLength; <.@w%rvG } c[?&;# feV u/`x@u tkHUX!Ow; //保存下载信息(文件指针位置) <@v|~AO4~ private void write_nPos() I=8MLv { j2 #B l try{ }sfvzw_ output = new DataOutputStream(new FileOutputStream(tmpFile)); p"n3JV.~k+ output.writeInt(nStartPos.length); ve*6WDK,H for(int i=0;i<nStartPos.length;i++) fp"GdkO#}i { ,0n=*o@W // output.writeLong(nPos); c{/KkmI output.writeLong(fileSplitterFetch.nStartPos); B=i%Z_r]w output.writeLong(fileSplitterFetch.nEndPos); ,\PTn7_ } 2u}ns8wn output.close(); >DR/lBtL } &([yI>% catch(IOException e){e.printStackTrace ();} Sr6?^>A@t catch(Exception e){e.printStackTrace ();} .@Jos^rxgJ } leJ3-w{ 2 X*M-- *0q' ">R`S<W //读取保存的下载信息(文件指针位置) N*Xl0m(Q private void read_nPos() ?? Dv\yLZI { xb^M33-y try{ K`cy97 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Q".p5(< int nCount = input.readInt(); .@f)#2 nStartPos = new long[nCount]; UeSPwY nEndPos = new long[nCount]; IpsV4nmnz- for(int i=0;i<nStartPos.length;i++) n,|YJ,v[ { FVoKNaK- nStartPos = input.readLong();
yc@:*Z nEndPos = input.readLong(); 9CHn6 v ~) } toC|vn&P input.close(); !%G;t$U=M } ;0E[ ;
L! catch(IOException e){e.printStackTrace ();} T;B/Wm!x catch(Exception e){e.printStackTrace ();} a~`,zQ -@ } sQa9M S L~5[f ;UWp0d%
private void processErrorCode(int nErrorCode) yI$MqR { -<q@0IYyi System.err.println("Error Code : " + nErrorCode); Zq\ p%AU9 } -<gQ>`(0 >4AwjS}H o(Ro/U(Wu //停止文件下载 1s#GY<< public void siteStop() Y@V6/D} 1 { %J|xPp) bStop = true; 4fdO Ow for(int i=0;i<nStartPos.length;i++) q|R$A8)L. fileSplitterFetch.splitterStop(); ZZ F\; ^NOy:> BjbpRQ, } <x1H:8A } bR|1*< //负责部分文件的抓取 }zV#?;} **FileSplitterFetch.java kZvh<NFh_ */ m?Dk(DJ package NetFox; -*&C "%e <<9Y=%C+ >oc&hT import java.io.*; fsVr<m import java.net.*; u=p-]? vke]VXU9z D
z5(v1I9A public class FileSplitterFetch extends Thread { FuZLE%gP ~m@w p d9uT*5f String sURL; //File URL } =^Al;W long nStartPos; //File Snippet Start Position p`LPO long nEndPos; //File Snippet End Position p9$=."5 int nThreadID; //Thread's ID e.^Y4( boolean bDownOver = false; //Downing is over r$.v"Wh) boolean bStop = false; //Stop identical wKs-<b%; FileAccessI fileAccessI = null; //File Access interface J*CfG;Y: <S%kwS #o-CG PE public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 7Ke#sW.HN { 2wG4" this.sURL = sURL; 2VNfnk this.nStartPos = nStart; K=C).5=U this.nEndPos = nEnd; )Y+?)=~ nThreadID = id; )IP{yL8c fileAccessI = new FileAccessI(sName,nStartPos);//定位 cxQ8/0^ } /!Kl 5&*B2ZBzH b/Z0{38 public void run() Ev;ocb, { !56gJJ-r while(nStartPos < nEndPos && !bStop) RDu'N { `L=$,7` .8%mi'0ud hq^@t6!C\m try{ :+>:>$ao URL url = new URL(sURL); 35[8XD HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); (^Kcyag4 httpConnection.setRequestProperty("User-Agent","NetFox");
b(~
gQM String sProperty = "bytes="+nStartPos+"-"; #dgWXO httpConnection.setRequestProperty("RANGE",sProperty); '{:Yg3K Utility.log(sProperty); nC5 _(8HK ,\K1cW~U5 InputStream input = httpConnection.getInputStream(); ?=uw0~O[ //logResponseHead(httpConnection); z<F.0~)jb 6A& f 9GZKT{* byte[] b = new byte[1024]; oGLSk(T&I int nRead; L.xzI-I@D while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) hFjXgpz5 { F W # S.< nStartPos += fileAccessI.write(b,0,nRead); Pl
}dA //if(nThreadID == 1) THmX=K4=? // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ^m
} 2Ax HhD. 9J?G"JV? "]nbM}> Utility.log("Thread " + nThreadID + " is over!"); 1&
k_&o bDownOver = true; 6#k
Ap+g7 //nPos = fileAccessI.write (b,0,nRead); imtW[ y+4 } %Iv0<oU catch(Exception e){e.printStackTrace ();} (r^IW{IndX } WQ]~TGW } y\Z-x .O'gD.|^N 1px:(8]{ //打印回应的头信息 .JpYZ | public void logResponseHead(HttpURLConnection con) >29eu^~nh { 5|-(Ic for(int i=1;;i++) NDRk%_Eu( { {cv,Tz[Q> String header=con.getHeaderFieldKey(i); i)0*J?l= if(header!=null) C<6IiF[>% //responseHeaders.put(header,httpConnection.getHeaderField(header)); =ot`V; Q> Utility.log(header+" : "+con.getHeaderField(header)); U3^T.i"R else ,7pO-:*g break; Uc}L/ax } &,fBg6A% } -[a0\H S[NV-)r= L`+\M+ public void splitterStop() eR8qO"%2: { fh
\<tnY bStop = true; Ckvm3r\i2 } /
GJ"##< u9>.x
zYG ;P _`4w3 } ?S0VtHQ A"C%.InZ Gz!72H /* `2NL'O: **FileAccess.java x-U^U.i@ *//文件访问(定位,写) d <qbUk3; package NetFox; d?&?$qf[ import java.io.*; y3$'
gu| A
A<9XC ,I@4)RSAH| public class FileAccessI implements Serializable{ 89@89-_mC '8k\a{t_z //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 )u]<8 RandomAccessFile oSavedFile; t_,iV9NrZ long nPos; CQ"IL;y $&k2m^R< 8{JTR|yB public FileAccessI() throws IOException J(M0t~RZ { *D,+v!wG9 this("",0); rEdr8qw } Roy`HU
;0a 0c7&J?"wE 0wZLkU_( public FileAccessI(String sName,long nPos) throws IOException #JO#PV% { Y#{KGVT< oSavedFile = new RandomAccessFile(sName,"rw"); ERGDo=j this.nPos = nPos; YIfPE{, oSavedFile.seek(nPos); n1uJQt } >}u?{_s *0 xHykU;p@ 'iMI&?8u public synchronized int write(byte[] b,int nStart,int nLen) )Ah { WqY:XE+?\ int n = -1; G5=(3 V% try{ ?8! 4!P%n oSavedFile.write(b,nStart,nLen); Ej 'a
G n = nLen; A0O$B7ylQ } qg:1 catch(IOException e) s4MP!n?gB { vT%rg r e.printStackTrace (); -hp,O?PM } T_jwj
N yql+N[ HQ@X"y
n return n; \~jt7 Q } Mk|h ><Q" )V)4N[?GC fn#b3ee } :;{U2q+ %Dsa
~{ JYm@Llf)$ /* X-oou'4< **SiteInfoBean.java ]4uIb+(S */ i0p"q p package NetFox; ^"6xE nA] r^ #.yUz pl
q$t/.U; public class SiteInfoBean { :$/lGIz {U^mL6=&v ,a^_
~(C private String sSiteURL; //Site's URL i7e{REBXb private String sFilePath; //Saved File's Path `U(A 5 private String sFileName; //Saved File's Name <&l3bL private int nSplitter; //Count of Splited Downloading File _~Lhc'^p* 2lAuO!% =,gss&J!! public SiteInfoBean() HOykmx6$ {//nSplitter的缺省值为5 Om>6<3n //default value of nSplitter is 5 ~+3f8%
this("","","",5); 1v`<Vb%"}T } SGNi~o ZW+{<XTof4 !c(B^E public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) w`>xK
sKW> { Qkr'C
n sSiteURL= sURL; nV:.-JR sFilePath = sPath; -k$rkKHZ( sFileName = sName; Am kHVg this.nSplitter = nSpiltter; q G=`'%,m PcUi+[s;x ]7dm`XV
} 0qJ(3N <ezvz..g #Y`U8n2F public String getSSiteURL() 20% xD e { 8{Zgvqbb return sSiteURL; &)xoR4!2 } v,+2CVdW ##k=='dR [(#ncR8B public void setSSiteURL(String value) I!# 42~\ { 7|,5; sSiteURL = value; )2bPu[U } o5Pq>Y2T ? 76jz>;b =H!u4
public String getSFilePath() 9-bDgzk
{ KS(s<ip| return sFilePath; *QAK9mc } YdE$G>&em dLQ!hKD~ -fG;`N5U public void setSFilePath(String value) l)XzU&Sc~ { xQaN\):^8 sFilePath = value; r%_)7Wk* } z4{|?0=C ]<z>YyBA s)ZL`S?</ public String getSFileName() 9O@eJ$ { 0%'&s)# return sFileName; 7z F29gC } Zf?>:P &:'Uh
W-t dk{yx(Ty public void setSFileName(String value) 8Jxo;Y { X<Vko^vlj sFileName = value; e[R364K } lm]4zs /A g<}K^)x f&{2G2O% public int getNSplitter() _?O'65 { XQlK}AK return nSplitter; |*OS;FD5 } v0=^Hym %4+r& tR0o6s@v/< public void setNSplitter(int nCount) R2t5T-8`c { ETjlq]@j nSplitter = nCount; #/5jWH7U } IY,&/MCh } ha3 Qx Tfs7SC8ta Ojie.+'SB /* a.wRJ **Utility.java "E8-76n */ hD # Yz< package NetFox; #N@sJyIN ldi'@^ ,C(")?4aJ public class Utility { K^s!0[6 X#gZgz =' UiaY0 .D public Utility() |2{y'?, { xJN
JvA '$q'Wl) c?>Q!sC } &xrm;pO 9[6xo! //线程睡眠 $>8+t>| public static void sleep(int nSecond) _@jl9<t=_ { 8$xg\l0?KK try{ u|O5ZV-cd Thread.sleep(nSecond); xREqcH,vU } D8BK/E- catch(Exception e) KzI$GU3 { 1ciP+->$ e.printStackTrace (); IWuR=I$t } :}e*3={4 } Aj SIM. GT<Y]Dk //日志 ;:8_H0X'K public static void log(String sMsg)
4\dc { I_'vVbK+> System.err.println(sMsg); byyz\>yAVq } +%$!sp? !$qNugLg }qi6K-,oU public static void log(int sMsg) WI](a8bm { 6>SP5|GG System.err.println(sMsg); Y-gjX$qGo } <y(>z*T; } CPFd 33 <P(d%XEl -"<H$ /* dB^J}_wp **TestMethod.java +:mj]`= */ fPZBm&`C package NetFox; o5i?|HJ z!D >l 'O
\YL(j_e public class TestMethod { 8/ZJkI vn6/H8
3)EslBA7i public TestMethod() CZxQz
{ ///xx/weblogic60b2_win.exe >.\G/'\? try{ {~[H"h537t SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 4Y Xtl+G //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); FavU"QU&| SiteFileFetch fileFetch = new SiteFileFetch(bean); [
C]=p fileFetch.start(); It(8s)5 } Czid"Ih- catch(Exception e){e.printStackTrace ();} k_-=:(Z =}Bq"m D2[uex } ipw _AC~ aVO5zR./) rcF;Lp : public static void main(String[] args) (GMKIw2 { ^qIp+[/' new TestMethod(); +}I[l,,xy } HC?yodp^ } c zL[W2l 点击下载更多相关资料
|