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/* 4Le{|B **SiteFileFetch.java YTfi g{a */ lvR>%I0`* package NetFox; rF/<}ye/4M import java.io.*; Lr "V import java.net.*; ciCQe]fS PaDm"+H@ =<P$mFP2* public class SiteFileFetch extends Thread { 8xoC9!xt K8v@) a,xy38T< SiteInfoBean siteInfoBean = null; //文件信息Bean aMxM3" long[] nStartPos; //开始位置 w:~vfdJ long[] nEndPos; //结束位置 Ou|kb61zg FileSplitterFetch[] fileSplitterFetch; //子线程对象 uPb. uG long nFileLength; //文件长度 r;"Qu boolean bFirst = true; //是否第一次取文件 Zo Ra^o boolean bStop = false; //停止标志 hXc:y0
0 File tmpFile; //文件下载的临时信息 Bv7os3xb DataOutputStream output; //输出到文件的输出流 bhW&,"$Z )qD V3 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 6ziBGU#.- public SiteFileFetch(SiteInfoBean bean) throws IOException [E qZj/ { ?]_A~_J! siteInfoBean = bean; - G=doP0 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); U@}P]'`'f tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); `mS0]/AV/ if(tmpFile.exists ()) 7aHP;X~0 { PD^Cj?wm bFirst = false; ztC,[ read_nPos(); 1E$^ul-v } 8`|Z9umW* else /!hxW}>^ { NU3s^ 8\( nStartPos = new long[bean.getNSplitter()]; f!B\X*| nEndPos = new long[bean.getNSplitter()]; [QwqP=-6 } ;a(7% AaM~B`B 1f$1~5Z J
c:j7}OOV } jZ<f-Ff0 .6iJ:A6T P#,g5 public void run() 80LN(0?x { ca'c5*Fs //获得文件长度 o"qG'\x //分割文件 aBKJd //实例FileSplitterFetch [-nPHmZV[ //启动FileSplitterFetch线程 u X(#+ //等待子线程返回 kM76?M
try{ <t,lq if(bFirst) wf~n>e^e { .h@bp1)l nFileLength = getFileSize(); yDi'@Z9R? if(nFileLength == -1) +"VXw2R_e { d.y-R#F_] System.err.println("File Length is not known!"); LUA<N: } yY80E[v else if(nFileLength == -2) ]!WD">d: { 7fW$jiw System.err.println("File is not access!"); ,d8*7my } Y>CZ else 6KX/Yj~B { 2))pB/ for(int i=0;i<nStartPos.length;i++) 1HeE$ { 6I\4Yv$N nStartPos = (long)(i*(nFileLength/nStartPos.length)); zoau5t } !Ic~_7" for(int i=0;i<nEndPos.length-1;i++) p$$0**p!` { t'HrI-x nEndPos = nStartPos[i+1]; ,'@t.XP } Nkk+*(Z nEndPos[nEndPos.length-1] = nFileLength; jB\Knxm v } .:Zb~ } (l)r.Vj KtaoU2s F7`[r9 $ //启动子线程 T{*!.+E fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; PLK;y for(int i=0;i<nStartPos.length;i++) GO6uQ}; { s 5F?m fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^7Z.~A y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 9@YhAj nStartPos,nEndPos,i); xepp."O Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); SB^xq fileSplitterFetch.start(); +QEiY~i } F>aaUj // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }J_#N.y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); w[/m:R?eX // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", E7@m& R nEndPos = " + nFileLength); Z:>ek>Op // fileSplitterFetch[nPos.length-1].start(); j$r2=~1 8/W2;>?wKc mz3Dt> //等待子线程结束 ;<BMgO}N //int count = 0; 'I@l$H //是否结束while循环 o AM)<#U> boolean breakWhile = false; P"Y7N?\]( D3C3_
@* R(#ZaFuo[ while(!bStop) /Hyi/D{ W { +\25ynM write_nPos(); gO_d!x* Utility.sleep(500); DP!~WkU~ breakWhile = true; 2h`Tn{&1/ .\"8H1I\T ?PU7xO;_ for(int i=0;i<nStartPos.length;i++) .-cx9& { D8)6yPwE if(!fileSplitterFetch.bDownOver) Vv*](iM { Gg5+Ap D breakWhile = false; > |(L3UA9 break; 'E4}++\ } e^or qw/I } oN=>U"<\1 if(breakWhile) bA/'IF+ break; Z4D[nPm$ 6Vu) rWip[>^ //count++; B[;aNyd< //if(count>4) }k_'a^;C1 // siteStop(); !5>PZ{J } %G'P!xQhy VH<-||X/4 .c\iKc# System.err.println("文件下载结束!"); *Jg&:(#}<J } (vwKC
D& catch(Exception e){e.printStackTrace ();} '_FxxLAO } `5 MK(K
: :} D TK 4Xe8j55 //获得文件长度 Up\ k67 public long getFileSize() +*x9$LSD { m[Cp
G=32B int nFileLength = -1; #2?3B try{ \ 9#X]H URL url = new URL(siteInfoBean.getSSiteURL()); ,7SqRY,+ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :rEZR ` httpConnection.setRequestProperty("User-Agent","NetFox"); PgYIQpV c2fw;)j&X oe[f2?- int responseCode=httpConnection.getResponseCode(); :O]US)VSj if(responseCode>=400) Wn Ng3'6 { q)OCY}QA processErrorCode(responseCode); }[SYWJIc return -2; //-2 represent access is error yhd]s0(! } W@Rb"5Gy+ @81N{tg- ricL.[v9S String sHeader; ) RNB;K~s9 N;i\.oY
Sgn<=8,6c for(int i=1;;i++) 0t6DD { DJ|lel/' //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); =!IoL7x //Utility.log(in.readLine()); _a zJ> sHeader=httpConnection.getHeaderFieldKey(i); mi@ni+2Tn if(sHeader!=null) !JA//{? { `pfRY! if(sHeader.equals("Content-Length")) kQO-V4z! { hY|-l%2f nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 05o<fa 2HE break; W;|%)D)y } 'q1cc5(ueV } 8+8L'Yv; else z+<ofZ(. break; VUZeC,FfO } K7wU
tg } h8icF}m catch(IOException e){e.printStackTrace ();} [R<>3}50Y catch(Exception e){e.printStackTrace ();} L$v<t/W 6dhzx; A k \\e`= Utility.log(nFileLength); `Nv P)| #{@qC2!2/ "b\@.7". return nFileLength; u4ZOHy_O^ } =Jswd W6V((84(O mnFmShu //保存下载信息(文件指针位置) C0CJ; private void write_nPos() 3)hQT-) { 3 5/ s\ try{ 9hjzOJPuga output = new DataOutputStream(new FileOutputStream(tmpFile)); Zm6|aHx8v output.writeInt(nStartPos.length); +g_m|LF for(int i=0;i<nStartPos.length;i++)
7MQxW<0 { .pIO<ZAFT // output.writeLong(nPos); %$67*pY'JH output.writeLong(fileSplitterFetch.nStartPos); +NVXFjPC output.writeLong(fileSplitterFetch.nEndPos); Cm9#FA } 2IXtIE output.close(); 5RyxVC0< } /ACau<U]t catch(IOException e){e.printStackTrace ();} XHh*6Yt_ ( catch(Exception e){e.printStackTrace ();}
I!T=$Um } b"w@am>& YmLpGqNv .z^O y_S{ //读取保存的下载信息(文件指针位置) ubMN private void read_nPos() $4hi D;n { NKl`IiGv try{
pRA%07?W DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); %JI*)K1WI int nCount = input.readInt(); V,]Fh5f nStartPos = new long[nCount]; ?Cv([ ^Y.u nEndPos = new long[nCount]; FIx|4[&>S for(int i=0;i<nStartPos.length;i++) 0rxGb} b* { WAJKP" nStartPos = input.readLong(); Q;GcV&f;f nEndPos = input.readLong(); u-*z#e_L0 } IUz`\BO4 input.close(); S2>$S^[U } HQMug catch(IOException e){e.printStackTrace ();} JA4}Bwn catch(Exception e){e.printStackTrace ();} k}!'@ } xXSfYW nX8ulGG s <,Mf[R2N> private void processErrorCode(int nErrorCode) L. 8`5<ITw { uw(Ml= System.err.println("Error Code : " + nErrorCode); Gh352 } 3gtKD9RL: -B #K}xL|x "^wIixOH5 //停止文件下载 ??lsv(v- public void siteStop() 1'|gxYT { O+]'*~a bStop = true; 1C0'
Gf)3 for(int i=0;i<nStartPos.length;i++) V!NRBXg fileSplitterFetch.splitterStop(); wLNkXC ?} lqu7S \\3 ?ij:v } Vq'n$k} } h.kjJF //负责部分文件的抓取 tJA"BP3f **FileSplitterFetch.java p!DOc8a.\e */ <r
m)c. package NetFox; y{2\T w:x[kA w+a5/i@ import java.io.*; zL9:e7o import java.net.*; .yD5>iBh
)a9C3-8Y' POf xN. public class FileSplitterFetch extends Thread { J0B*V0'zR @U@O#+d'ZR KNR7Igw?} String sURL; //File URL 4BeHj~~ long nStartPos; //File Snippet Start Position k{U[ U1j long nEndPos; //File Snippet End Position )Br#R:# int nThreadID; //Thread's ID Lcf?VV} boolean bDownOver = false; //Downing is over U2CC#,b!( boolean bStop = false; //Stop identical 8fktk?| FileAccessI fileAccessI = null; //File Access interface ZD4aT1|Q7 x+b.9f4xJ ~y"OyO i& public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException VCwC$ts { Yv0y8Vz@ this.sURL = sURL; ?Ezy0>j this.nStartPos = nStart; wN^^_ this.nEndPos = nEnd; &.qLE nThreadID = id; P)LOAe1' fileAccessI = new FileAccessI(sName,nStartPos);//定位 Ihv@2{*(b } QL*RzFAD3 `?SC.KT Q$sC%P(y public void run() 0.2stBw { /:"^,i\t while(nStartPos < nEndPos && !bStop) fIJX5)D { ^ E.mG>
A[F_x*S Q<KF<K'0hg try{ GMB3`&qh URL url = new URL(sURL); ewWw HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); gtT&97tT< httpConnection.setRequestProperty("User-Agent","NetFox"); `g4N]<@z String sProperty = "bytes="+nStartPos+"-"; W|"bV 6d3 httpConnection.setRequestProperty("RANGE",sProperty); uGHM ]"!) Utility.log(sProperty); I:6XM? eu":\ks /1$u|Gs
* InputStream input = httpConnection.getInputStream(); 7|jy:F,w% //logResponseHead(httpConnection); VLJ]OW8cO fxmY,{{ J _q byte[] b = new byte[1024]; p<?lF int nRead; a*iKpr- : while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) OR37 { J:O&2g"g
nStartPos += fileAccessI.write(b,0,nRead); s_^N=3Si
//if(nThreadID == 1) %@|)&][hO // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); &N]e pV> } %~kE,^ YY(_g|;?8 {u-J?(s} Utility.log("Thread " + nThreadID + " is over!"); 6']G HDK bDownOver = true; k'+y //nPos = fileAccessI.write (b,0,nRead); Ro4!y:2| } e/#6qCE catch(Exception e){e.printStackTrace ();} 1$`|$V1 } L\5:od[EP } ,Q.[Lc=w TjI&8#AWBA *'tGi_2?( //打印回应的头信息 S9ic4rcd public void logResponseHead(HttpURLConnection con) rBi6AM/ { K\zb+ for(int i=1;;i++) }E[vW { dvz6 String header=con.getHeaderFieldKey(i); 3\{\ al if(header!=null) hpYv*WH: //responseHeaders.put(header,httpConnection.getHeaderField(header)); m)?0;9bt Utility.log(header+" : "+con.getHeaderField(header)); p=#/H,2 else E1dhj3+3 break; U<>@)0~7g! } =sefT@< } !ZvVj\{ j>l hJ8%r_ public void splitterStop() 2I& dTxIa { DY{v@
<3 bStop = true; G)c+GoK } <a&xhG} aQf2}kD R0F [ } .726^2sx BwGOn)KL ksOc,4A /* R y(<6u0 **FileAccess.java B&<5VjZ\ *//文件访问(定位,写) m1X*I package NetFox; >[wB|V5 import java.io.*; ,?IXfJ`c ld):Am}/o EwgNd Gcj public class FileAccessI implements Serializable{ Cbl>eKw pGF;,h> //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 }_}
RandomAccessFile oSavedFile; bj0<A long nPos; Ciz,1IV ShvC4Xb 0 (FZ8T39 public FileAccessI() throws IOException ?<Hgq8J { jC$~m#F this("",0); O '`|(L } %++S;#)~ Da!vGr q8.Z7ux public FileAccessI(String sName,long nPos) throws IOException 8 nqF i { qJO6m-
oSavedFile = new RandomAccessFile(sName,"rw"); -dN`Ok<g this.nPos = nPos; ~l.C- oSavedFile.seek(nPos); 59v=\; UI } Vpzjh,r-j Y C<FKWc xj&~>&U){; public synchronized int write(byte[] b,int nStart,int nLen) cxvO,8NiB { ="f-I9y int n = -1; [;4ak)! try{ I9rQX9#B
oSavedFile.write(b,nStart,nLen); O8N1gf;t n = nLen; ~E_irzOFP } c* ~0R? catch(IOException e) *~cNUyd { Ux{QYjFE e.printStackTrace ();
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return n; =CS$c? } *f{4_ts ,KF>@3f 6 OvH"/X4 } e6qIC*C ! rg#/kd<?[V zQt)>Qx_ /* !{ _:k%B **SiteInfoBean.java AW9%E/{ */ 1=E}X5 package NetFox; ,?Vxcr +u t%C.1
pU,\ &3N public class SiteInfoBean { n<HF] yp@cn(:~ UfV {m
private String sSiteURL; //Site's URL QwF.c28[ private String sFilePath; //Saved File's Path p]Qe5@NT private String sFileName; //Saved File's Name a9_2b}t private int nSplitter; //Count of Splited Downloading File e8egxm p)"EenUK u:J4Az^! public SiteInfoBean() 6W7,EIf {//nSplitter的缺省值为5 : 0Y.${h //default value of nSplitter is 5 d(9Sk Xr this("","","",5); HM"(cB(n` } .>PwbZ 3/&
|Z<f )=aqj@v public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) C:bA:O { <S;YNHLC sSiteURL= sURL; XRyeEwA;pp sFilePath = sPath; kI5LG6 sFileName = sName; 3W.D^^)eCV this.nSplitter = nSpiltter; Z3ODZfu> W=|'&UU Ul XuZgyt"=r } 0tMzVxS V/R@=[ L;b-=mF public String getSSiteURL() (5[#?_~ { 36.mf_AM return sSiteURL; -(}N-yu } W&Xi&[Ux 5"q{b1 KpS=oFX{} public void setSSiteURL(String value) YxA nh { R_Bf JD. sSiteURL = value; =FFs8&PKys } o$*DFvk ^BI&-bR@ 9+5F(pd( public String getSFilePath() c]z^(:_> { Ml+f3#HP return sFilePath; 8-b~p } =U:]x'g( CaoQPb* &;GoCU Le public void setSFilePath(String value)
S=~+e{ { T).}~i;! sFilePath = value; {c&9}u$e } g K dNgU "[Tr"nI wc~ 9zh public String getSFileName() E!I4I' { .Dr7YquW return sFileName; v yP_qG } td#m>S DAEWa
Kui e+@.n public void setSFileName(String value) 7bJM
$
{ >S?7-2X sFileName = value; '64/2x } jd
8g0^ &N%-.&t' eMH\]A~v" public int getNSplitter() *\Hut'7 d { ~H]d9C return nSplitter; /`O'eH } 5=4-IO6W[] n4ti{-^4|d 3|Ar~_] public void setNSplitter(int nCount) I&x69 { Ww{-(Ktx nSplitter = nCount; -r0oO~KT } 1;>RK } xlW>3'uHfa SC2g5i` H"2,Q
T /* HI)U6.' **Utility.java i l%9j */ mj y+_ package NetFox; o%Qn%gaX wo^1%:@/2 ^$lsmF]^ public class Utility { o`}8ZtD D[Ld=e8t zH@+\#M public Utility() [|HQfTp$ { %';DBozZ hDEZq>& ZPY84)A_} } e9B$"_ &2 !|Y&h0e //线程睡眠 ?
5hwz public static void sleep(int nSecond) bHHR^*B { x1:1Jj: try{ +OUM 4y Thread.sleep(nSecond); ZJ_P= } Zt4 r_7 catch(Exception e) HL!" U(_ { D/WzYc2h] e.printStackTrace (); @jD19= } j7HOh|q } "QY~V{u5 Q $>SYvW //日志 ,k/<Nv; public static void log(String sMsg) wtGb3D"am { /B System.err.println(sMsg); jbTyM"Y } j !`2Z@ :#W>lq@H vYG$>* public static void log(int sMsg) Aj=c,]2 { R~BW=Dz,e System.err.println(sMsg); W{;LI
WsZ } d _koF-7 } f P1fm mDU-;3OqF qk(u5Z /* sk`RaDq@; **TestMethod.java rB5+~
K@ */ lnnt b3q package NetFox; ~9+\ k+cHx799 aeF^&F0 public class TestMethod { 7kidPAhY W-ECmw( rYr.mX public TestMethod() cNqw(\rr { ///xx/weblogic60b2_win.exe :y[tZ&*<_? try{ Q|cA8Fn SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Ad`jV_z //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 1Aa=&B2 SiteFileFetch fileFetch = new SiteFileFetch(bean); Yy0m &3[ fileFetch.start(); <8/lHQ^\) } w+tO@ catch(Exception e){e.printStackTrace ();} rx;zd ? aw/5#(1R n
6|\ } R2[!h1nZ Rd*/J~TK "mkTCR^]e public static void main(String[] args) :J+GodW { u8@>ThPD new TestMethod(); #/`V.jXt> } M3
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