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/* {hW
+^ **SiteFileFetch.java L%c]%3A */ 8:3oH!n package NetFox; eONeWY9 import java.io.*; .y/NudD import java.net.*; V0SW 5
m M"$jpBN* 8GF[)z&|P: public class SiteFileFetch extends Thread { [[Jv)?jm sRo<4U0M;l ];d5X SiteInfoBean siteInfoBean = null; //文件信息Bean Zi[{\7a long[] nStartPos; //开始位置 wiK@o$S- long[] nEndPos; //结束位置 SK2J`* FileSplitterFetch[] fileSplitterFetch; //子线程对象 F^ %{
; long nFileLength; //文件长度 ZNL;8sI?> boolean bFirst = true; //是否第一次取文件 *@$($<pY& boolean bStop = false; //停止标志 #z-iL!? File tmpFile; //文件下载的临时信息 qd#(`%_/ DataOutputStream output; //输出到文件的输出流 ]yj4~_&O #Tgz,e9 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) (Fbm9(q$d public SiteFileFetch(SiteInfoBean bean) throws IOException } K+Q9<~u { 7gZVg@ siteInfoBean = bean; {kRDegby //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Skr\a\
J tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 0`g}(}'L if(tmpFile.exists ()) T@d_t { |p=.Gg=2 bFirst = false; $v?! 6: read_nPos(); n]6}yJJo } @4 Os?_gJ\ else E7Gi6w~\ { %>I?'y^ nStartPos = new long[bean.getNSplitter()]; >[E|p6jgT nEndPos = new long[bean.getNSplitter()]; ei|*s+OZu } "c !oOaA kMJQeo79 3[|:sa8?s 5tgILxSK } (DELxE 4$q)e<- _x,-d|9bd public void run() '5OVs:)"^ { lD;,I^Lt6 //获得文件长度 \Z6gXO_ //分割文件 !S >|Qh //实例FileSplitterFetch ziB]S@U //启动FileSplitterFetch线程 xsY>{/C //等待子线程返回 dEAAm=K,< try{ 2EqsfU*
I if(bFirst) +,{Wcb { <g/(wSl nFileLength = getFileSize(); Z+`{JE# if(nFileLength == -1) 5b{yA~ty { >2/wzsW System.err.println("File Length is not known!"); W O+?gu } #<WyId( else if(nFileLength == -2) <De3mZb { cciAMQhA System.err.println("File is not access!"); @3expC } !mErt2UJl else YjIED,eRv { qqz,~EhC for(int i=0;i<nStartPos.length;i++) `1[Sv" {
;f ;*Q>! nStartPos = (long)(i*(nFileLength/nStartPos.length)); p.TiTFu/ } yTq(x4] for(int i=0;i<nEndPos.length-1;i++) ;+TF3av0zq { g.`t!6Hc nEndPos = nStartPos[i+1]; [-:<z?(n4 } &\6`[# bT nEndPos[nEndPos.length-1] = nFileLength; i Ks,i9j } 3>@qQ_8%~ } Fgc:6<MGM _1>(GK5[ r3BDq //启动子线程 ~D`oP/6 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; VT.{[Kl for(int i=0;i<nStartPos.length;i++) 8H%I|fm { zoJkDr=jn fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Z9
q{r s siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 4-}A'fTU8 nStartPos,nEndPos,i); @L>NN>?SGQ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >gOI]*!5 fileSplitterFetch.start(); 0@mX4.! } l~Wk07r3 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), yZ(Nv $[5 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); yK>0[6l // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", i6g[E4nk nEndPos = " + nFileLength); 3Ld ;zW // fileSplitterFetch[nPos.length-1].start(); Pguyf2/w ixJ20A7 +v[$lh+ //等待子线程结束 /Y\E68_Fh //int count = 0; eI=Y~jy //是否结束while循环 c[d'1=Qiy boolean breakWhile = false; sWZtbW;) nGJIjo_I g`5`KU| while(!bStop) B,m$ur#$ { @IyH(J],h write_nPos(); }^Ua Utility.sleep(500); 4k&O-70y4^ breakWhile = true; !Bd*
L~D D'sboOY Cp~3Jm3 for(int i=0;i<nStartPos.length;i++) B 1ZHV^ { 4M<JfD if(!fileSplitterFetch.bDownOver) m|cWX"#g { neY=:9 breakWhile = false; PHiX:0zT break; LG@c)H74 } L};;o+5uJD } Hb AMoow! if(breakWhile) MCrO]N($b break; 5vh"PlK`s ao";5m b=QGbFf //count++; ";Ig%] //if(count>4) FnQ_=b
// siteStop();
xV 1Z&l } )Fr;'JYC1S ?o(X0 b\Xu1> System.err.println("文件下载结束!"); uA/.4 b } *ZSp9g"Z catch(Exception e){e.printStackTrace ();} 7%"\DLA } uSQ>oi] @Jn:!8U0 w KMk|y> //获得文件长度 Y /ac}q public long getFileSize() d
@kLLDP { LX?r=_\ int nFileLength = -1; (#l_YI
- try{ G$kwc
F'C URL url = new URL(siteInfoBean.getSSiteURL()); DGfQo5# HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); , ZP3F+XKb httpConnection.setRequestProperty("User-Agent","NetFox"); O\8|niW| F?,&y)ri !%\To(r[ int responseCode=httpConnection.getResponseCode(); rs<&x(=Hv if(responseCode>=400) zf;[nz { ONe!'a0 processErrorCode(responseCode); 674oL, return -2; //-2 represent access is error d|?(c~ } >8fz ?A tDLk ZCP *=0r>] String sHeader; QKaj4?p$|S [QqNsco) Q]g 4gj for(int i=1;;i++) GxDF7
z%& { oY6|h3T=Q$ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); NUnc"@ //Utility.log(in.readLine()); @)'@LF1Z sHeader=httpConnection.getHeaderFieldKey(i); <VxpMF if(sHeader!=null) MJ/%$ { _NqT8C4C if(sHeader.equals("Content-Length")) AW;)_|xM { F#bo4'&>@ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 68GGS`& break; ;pyJ O_R[ } "oXAIfU#T } ST8/
;S#c
else `"b7y(M break; R6$F<;nw } GV@E<dg$R } <^'+]? catch(IOException e){e.printStackTrace ();} pBnf^Ew1 catch(Exception e){e.printStackTrace ();} -GWzMBS S u`Qcw|R+
Vh2/Ls5 Utility.log(nFileLength); *|#JFy?c[ tc2GI6]e' /Vd#q)b%T return nFileLength; 1Da [!^u,D } iEgM~ -+_aL4. W#\};P
//保存下载信息(文件指针位置) Z#:@M[HH{ private void write_nPos() $H@)hY8wA { 2CgIY89O try{ 6')SJ*|yS output = new DataOutputStream(new FileOutputStream(tmpFile)); jMWwu+w output.writeInt(nStartPos.length); +U)|&1oa for(int i=0;i<nStartPos.length;i++) ]9< 9F ? { UpseU8Wo // output.writeLong(nPos); FRQ("6( output.writeLong(fileSplitterFetch.nStartPos); K}/`YDu output.writeLong(fileSplitterFetch.nEndPos); '*;eFnmvs: } @wgGnb) output.close(); mL5f_Fb+ } wR+`("2{r catch(IOException e){e.printStackTrace ();} >upUY(3& catch(Exception e){e.printStackTrace ();} RkP|_Bf8) } $5CY<,f DSZhl-uGM AbI*/|sY //读取保存的下载信息(文件指针位置) 4x?u5L
9o private void read_nPos() !3Z|!JY { L\b_,'I try{ 8[`<u[Iv DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); `[:1!I.}- int nCount = input.readInt(); YIUmCx0a nStartPos = new long[nCount]; d*(Bs$De nEndPos = new long[nCount]; i{[H3p8 for(int i=0;i<nStartPos.length;i++) E/P53CD { r_sl~^* : nStartPos = input.readLong(); U105u.#7 nEndPos = input.readLong(); u,SZ-2K!7~ } dB)hW'J? input.close(); sl
@6 } 5f@YrTO[@ catch(IOException e){e.printStackTrace ();} '<D}5u72 catch(Exception e){e.printStackTrace ();} 78~V/L;@S2 } 'p+QFT>Ca PxD}j
2Kd
9QZ wUQ private void processErrorCode(int nErrorCode) J3S+| x h~ { -?` l<y( System.err.println("Error Code : " + nErrorCode); N_[ Q.HD" } $v@$oPmMj =V]i?31[ Q09~vFBg //停止文件下载 Sz@?%PnU| public void siteStop() 2#M:JgWV { 3Il/3\ bStop = true; afq
+;Sh for(int i=0;i<nStartPos.length;i++) Y8'_5?+ 0 fileSplitterFetch.splitterStop(); QjN3j*@ IMrOPwjc [y;ZbfMP|o } J,KTc'[ } -mo
'
$1 //负责部分文件的抓取 %)ov,p| **FileSplitterFetch.java yzb& */ WR EGRy package NetFox; MJpTr5Vs ,,wx197XeD d6
EJn/ import java.io.*; bO%ck-om! import java.net.*; UI|@5:J zR_l^NK :Zo2@8@7 public class FileSplitterFetch extends Thread { 5MU@g*gj,C @$}\S r9*H-V$ String sURL; //File URL p&doQh long nStartPos; //File Snippet Start Position `z`;eR2oX long nEndPos; //File Snippet End Position k r^#B^ int nThreadID; //Thread's ID NVZNQ{ boolean bDownOver = false; //Downing is over 1U9N8{xg9 boolean bStop = false; //Stop identical 1+c(G?Ava FileAccessI fileAccessI = null; //File Access interface *]?YvY }mZ*f y0t 5{aQ4H>~tx public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 4GA-dtyV& { c}s3c
>`d this.sURL = sURL;
|sM#g1D@ this.nStartPos = nStart; [N+ruc?) this.nEndPos = nEnd; :S6 <v0`Z nThreadID = id; vJ} fileAccessI = new FileAccessI(sName,nStartPos);//定位 vz5RS } Cms"OkN 8^i,M^f^{ 58U[r)/ public void run() 5j5t?G;d, { )3">%1R while(nStartPos < nEndPos && !bStop) oYx
f((x { Ap18qp 3PeJPw |]b/5s;> try{ W\Y
4%y} URL url = new URL(sURL); q`zR 6 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); S^=/}PT' httpConnection.setRequestProperty("User-Agent","NetFox"); 30`H
Xv@ String sProperty = "bytes="+nStartPos+"-"; n :kxG httpConnection.setRequestProperty("RANGE",sProperty); m]pvJJ@ Utility.log(sProperty); <QLj6#d7Y Y%8QFM Kx!|4ya, InputStream input = httpConnection.getInputStream(); 4HmRsOl //logResponseHead(httpConnection); W7>_nK+g? :Xr3 3 74wa byte[] b = new byte[1024]; D)6|| z} int nRead; (XWs4R.mkb while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) (I
g
*iJ%2 { 1&nrZG9 nStartPos += fileAccessI.write(b,0,nRead); T5G+^XDA //if(nThreadID == 1) [/]3:| // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !Xce iQu } f2f$aZ jZyh )A;<'{t #L Utility.log("Thread " + nThreadID + " is over!"); f89<o#bm7h bDownOver = true; 36UWoo //nPos = fileAccessI.write (b,0,nRead); Yy 1Pipv } ||NCVGJG catch(Exception e){e.printStackTrace ();} C.p*mO&N } '11h Iu=: } Hb4rpAeP (b!DJ;(O9 ePdzQsnVe //打印回应的头信息 -ZJ:< public void logResponseHead(HttpURLConnection con) gRSG[GMV { 4}j}8y2)H for(int i=1;;i++) 5@5="lNjS { N`fY%"5U> String header=con.getHeaderFieldKey(i); Fd'L:A~ if(header!=null) X/"H+l //responseHeaders.put(header,httpConnection.getHeaderField(header)); W0hLh<Go Utility.log(header+" : "+con.getHeaderField(header)); cH ?]uu( else )~ kb7rfl break; qIp`'.#m } $nWmoe) } Yb*}2 Xu0*sQK )BDi2 : u public void splitterStop() =B2=UF { vS<e/e+ bStop = true; 2YQ$hL ~ } $E6uA}s b2H6}s"=w 9!h+LGs(, } -n-X/M E ..[F<5 E>v~B;@ /* E"!*ASN **FileAccess.java $!lxVZ> *//文件访问(定位,写) &*~
WK package NetFox; `dhK$jYD import java.io.*; h#9)M {D8IA3w #^Y-*vf2 public class FileAccessI implements Serializable{ O;"%z*g. qB`P7!VN^] //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 i"@?eq#h RandomAccessFile oSavedFile; V;=T~K|)> long nPos; 5E8PbV-l ;?9~^,l g!UM8I-$
public FileAccessI() throws IOException J4; ".Y= { dl4.jLY this("",0); L2%P } DTY=k oY: "nE ;MD{p1w public FileAccessI(String sName,long nPos) throws IOException 3 -FNd~% { `)fGw7J
{ oSavedFile = new RandomAccessFile(sName,"rw"); |v&&%>A2 this.nPos = nPos; )Ec;kr b+ oSavedFile.seek(nPos); R_}(p2 } @ ri.r1 Fk:(%ci /uVB[Tk^ public synchronized int write(byte[] b,int nStart,int nLen) &0`L; 1R { f#jAjzmYL int n = -1; xM,3F jF try{ 9S^-qQH3} oSavedFile.write(b,nStart,nLen); WUWQcJj n = nLen; FtXEudk } t Ks0]8tc catch(IOException e) HT'dft # { H#D=vx' e.printStackTrace (); 0=iJT4IEJ } W~4|Z=f KpL82 xXtDGP return n; sAxn
;
` } LO229`ARr| _)Ms9RN D~Su822 } |(fWT}tg >=bO@)[ li[g =A,
/* u/AN|
y **SiteInfoBean.java 2iu;7/ */ <fxYTd<#D[ package NetFox; ^]kDYhe*Y S@_GjCpn IlVi1`]w public class SiteInfoBean { Kh> ^;`h x;I*Ho P~&X$H%e private String sSiteURL; //Site's URL T-MLW=Vu private String sFilePath; //Saved File's Path bm^ou#]| private String sFileName; //Saved File's Name C>H UG private int nSplitter; //Count of Splited Downloading File 4%pvw;r *\>7@r[%5 *KMCU
m public SiteInfoBean() P*}Oi7Z {//nSplitter的缺省值为5 sbVeB%k //default value of nSplitter is 5 +MEWAW[}^ this("","","",5); SE\`JGA[ } p`It=16trT `CV a`% ,[x'S>N public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) {974m` 5 { ~ rRIWfhb sSiteURL= sURL; q+z,{K sFilePath = sPath; Sb<=ROCg@ sFileName = sName; ,^3D"Tky this.nSplitter = nSpiltter; 6^p6v +um;
eL7 r8qee$^M } 607#d):Y J&5|'yVX g+f{I'j public String getSSiteURL() 7HzKjR=B { iU &V}p return sSiteURL; :%Bo)0a9 } xKxWtZ0 I++!F,pB u3q!te public void setSSiteURL(String value) 7>.^GD { +}^ sSiteURL = value; TGg* (6'z } =U:iR #xO`k1W. 1{A4_/R public String getSFilePath() X:DHz0S { HLS^Ga,( return sFilePath; I(2ID + } j*P@]&e7d )/BKN` , 1vobfZ-w9 public void setSFilePath(String value) Y}0 - & { /%.K`BMN sFilePath = value; {MIs%w.G } N@k:kI U-k6ZV3&8 o;"!#Z 1SJ public String getSFileName() (\]_/ W { REHfk6YE return sFileName; -wY6da*.W } %o5GD Dgdh3q; "zr%Q'Ky public void setSFileName(String value) R (6Jvub"I { /GEqU^
B sFileName = value; Blu^\:?#z- } JAgec` T% |u03~L9G _yU
e2Gd public int getNSplitter() -QRKDp { &We'omq return nSplitter; J?%Z7&/M> } B-o"Y'iXs b+{,c@1rd ;]p#PNQ0 public void setNSplitter(int nCount) _I2AJn`# { uu(.,11` nSplitter = nCount; "3Ec0U \s } 0evG } m(9E{; ~,ac{%8x %e3lb<sv6 /* K~[/n<ks **Utility.java Qg3
-%i/@ */ olh|.9Kdj} package NetFox; xe}"0'g I 5 ?onZ:s2 public class Utility { @T1-0!TM') MYLq2g\ 4/HyO\?z5 public Utility() Ff|?<\x0}A { iHTxD1D+H eqXW|,zUm a
"8/y4Y } o6'`W2P GAQVeL1 //线程睡眠 ~bgFU public static void sleep(int nSecond) t:W`=^ { c D7q;|+ try{ $lUZm\R|k Thread.sleep(nSecond); lxV>
rmD } qxk1Rzm?x catch(Exception e) 89~) nV) { ?9/%K45 e.printStackTrace (); 0^zu T } bD=_44I } QRx'BY$5 1Hzj-u&N/ //日志 <` HLG2 public static void log(String sMsg) 'j>Q7M7q{ { )0!hw|0| System.err.println(sMsg); %$S.4#G2 } i |cSO2O+ XYf;72* 9].!mpR public static void log(int sMsg) I 8e{%PK { 3xbA]u;gp System.err.println(sMsg); n&k1'KL&
} |7%M:7Q } jR*1%.Ng R$wo{{KX s!uewS. /* Au@U;a4UU **TestMethod.java !%sj- RMvG */ pvkru-i] package NetFox; 0!\pS{$zB *S`&
XPj cy%^P^M public class TestMethod { SkVW8n*s ?;!l-Dy <{:$]3 public TestMethod() & Z*&& { ///xx/weblogic60b2_win.exe , En
D3
| try{ {- tCLkE
3 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); |G!-FmIK //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); L~CwL SiteFileFetch fileFetch = new SiteFileFetch(bean); |Kh#\d fileFetch.start(); e*=N \$ } 7hY~ catch(Exception e){e.printStackTrace ();} sYgpK92 D<C ZhYJ /mF%uI>: } <LH(> !/sXG\ P]1`=- public static void main(String[] args) 02SFFqm { $D<LND=o= new TestMethod(); _L<IxOZh+ } mQ:lj$Gf } _.yBX\tf[ 点击下载更多相关资料
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