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/* #G|RnV%t$~ **SiteFileFetch.java f*% D$Mqg */ SM#]H-3 package NetFox; t|\%VC import java.io.*; I*{nP)^9 import java.net.*; dL 1tl 4[r0G+ uBKgcpvTs public class SiteFileFetch extends Thread { ~H_/zK6e nNV'O(x} dq6m>;` SiteInfoBean siteInfoBean = null; //文件信息Bean _/$Bpr{R long[] nStartPos; //开始位置 7>0o& long[] nEndPos; //结束位置 x /S}Q8!"} FileSplitterFetch[] fileSplitterFetch; //子线程对象 xh,qNnGGi long nFileLength; //文件长度 \ a<h/4#| boolean bFirst = true; //是否第一次取文件 k,6f
boolean bStop = false; //停止标志 /4V#C- File tmpFile; //文件下载的临时信息 t#})Awy^R DataOutputStream output; //输出到文件的输出流 J?1 uKR ::lKL //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) wu!59pL public SiteFileFetch(SiteInfoBean bean) throws IOException r'r%w#=`t { zkrM/ @p# siteInfoBean = bean; 4r#= * //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 85$m[+md tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); dr}`H,X"3 if(tmpFile.exists ()) x,+{9 { |bHelD| bFirst = false; -UEZ#Q read_nPos(); TDKki(o=~ } BLdvyVFx else ]i)c{y { }O5i/#.lR nStartPos = new long[bean.getNSplitter()]; PI)+Jr%L nEndPos = new long[bean.getNSplitter()]; (O?.)jEW(. } d#Y^>"|$. rSk> 29"'K.r W~;`WR;. } Lc,Pom ~9]hV7y5C Qh3YJ=X& public void run() |Nn)m { RDi]2 //获得文件长度 o Q2Fjj //分割文件 `Bp.RXsd* //实例FileSplitterFetch *uf'zQ<9 //启动FileSplitterFetch线程 8 &LQzwa //等待子线程返回 +b<FO+E_ try{ $E~`\o%Ev if(bFirst) A*2jENgci { 7M!I8C0!aO nFileLength = getFileSize(); HxV=F66"
if(nFileLength == -1) HY*Kb+[ { Y@vTaE^w3 System.err.println("File Length is not known!"); QzVnL U) } a=9:[ else if(nFileLength == -2) W?R6ZAn { 4<Utmr System.err.println("File is not access!"); w^|*m/h|@u } VcO0sa f` else Gbr=+AT { GL#u p for(int i=0;i<nStartPos.length;i++) 8@Q$'TT6} { mbxZL<ua nStartPos = (long)(i*(nFileLength/nStartPos.length)); C.yQ=\U2 } HGs $* for(int i=0;i<nEndPos.length-1;i++) b\kdKVh& { D 6Ui! nEndPos = nStartPos[i+1]; f!uw zHA`? } TH&U
j1 nEndPos[nEndPos.length-1] = nFileLength; s}9S8@# } Y-_`23x` } R6Km\N m@2QnA[4 KNvZm;Q6 //启动子线程 RuA*YV fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; y<|7z99L for(int i=0;i<nStartPos.length;i++) O7m(o:t x3 { mbTEp*H fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), i{NzV siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),
}<v@01 nStartPos,nEndPos,i); 5y[Oj^ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); i Dp)FQ$ fileSplitterFetch.start(); D9=KXo^ } JN-y)L/> // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (AaoCa[ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); RQ'9m^ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ]Kt6^|S$a nEndPos = " + nFileLength); C=L>zOZ // fileSplitterFetch[nPos.length-1].start(); v\gLWq' 5oW!YJg g0=z&2Q[_) //等待子线程结束 P|tO<t6/9* //int count = 0; *xxx:*6rk; //是否结束while循环 KE5kOU; boolean breakWhile = false; q]ku5A\y qpP=K $ ooj,/IEQ while(!bStop) 3tIVXtUCUk { @]%IK(| write_nPos(); _LEK% Utility.sleep(500); mZS
>O_E breakWhile = true; kX7C3qdmt WYm\)@ nLZTK&7} for(int i=0;i<nStartPos.length;i++) pk$l+sNZ= { SumF
2 if(!fileSplitterFetch.bDownOver) OUPUixz2Z { ~S"+S/z/k breakWhile = false; ifMRryN4 break; 2/\r)$
2i } 7Jyy z,!5 } en4k/w_ if(breakWhile) =vCY?I$P break; zII|9y )hn6sXo+ u^+7hkk //count++; DZ'P@f)] //if(count>4) {0Yf]FQb-a // siteStop(); ,Bi.1
%$ } dC3o9 Z*]9E^ vAF
"n System.err.println("文件下载结束!"); <sGVR5NR } Db}j?ik/ catch(Exception e){e.printStackTrace ();} ;40/yl3r3[ } Fx_z 6a r"3=44St |PCm01NU! //获得文件长度 )np:lL$$ public long getFileSize() :1.L}4"gg { shy-Gu& int nFileLength = -1; v!-/&}W)1 try{ {yTGAf-DV URL url = new URL(siteInfoBean.getSSiteURL()); [[Ls_ZL!= HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F3[T.sf httpConnection.setRequestProperty("User-Agent","NetFox"); ^+>laOzC`8 .GPT!lDc 2+N]PW\V int responseCode=httpConnection.getResponseCode(); j?3wvw6T if(responseCode>=400) T"}5}6rSG { XSwl Tg processErrorCode(responseCode); ?|\ER#z return -2; //-2 represent access is error [\98$BN } E!)xj.aS$ (&Kk7<#` 5FPM`hLT String sHeader; &v/dj@ MO]F1E?X 6RU~"C for(int i=1;;i++) #>("CAB02T { ~|DUt //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); UawyDs //Utility.log(in.readLine()); :gv{F} ## sHeader=httpConnection.getHeaderFieldKey(i); lV3x *4O= if(sHeader!=null) Fh&G;aEq { Wa>}wA=v if(sHeader.equals("Content-Length")) lwxaMjaL4K { d`=MgHz nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); FJGlP&v< break; `!3SF|x& } Zgp4`)}: } Tt`u:ZwhF else 6m/r+?' break; U/66L+1 } xf\ C|@i } J\}twYty catch(IOException e){e.printStackTrace ();} Fo (fWvz catch(Exception e){e.printStackTrace ();} hlvK5Z Jc&{`s^Nu Fj 8z Utility.log(nFileLength); xA2YG|RU=b EqkN3%IG c)6m$5] return nFileLength; fZGX}T<)p- } .ljnDL/ pGP7nw_g jh?H.;** //保存下载信息(文件指针位置) Y#ap* private void write_nPos() _P#|IAq* { bI7Vwyz try{ z}77Eh< output = new DataOutputStream(new FileOutputStream(tmpFile)); .FP$m? output.writeInt(nStartPos.length); q<x/Hat) for(int i=0;i<nStartPos.length;i++) R^8o^z['6u { +B,}Q r // output.writeLong(nPos); G=s}12/Z"{ output.writeLong(fileSplitterFetch.nStartPos); Pf")e,u$ output.writeLong(fileSplitterFetch.nEndPos); <6%?OJhp } 58}U^IW output.close(); GLH0 ] } U#7#aeI catch(IOException e){e.printStackTrace ();} p}}R-D&K catch(Exception e){e.printStackTrace ();} x xHY+(m } '|6]_ <VMGTBVQ _b
pP50Cu //读取保存的下载信息(文件指针位置) XAD- 'i private void read_nPos() wyH[x!QX { W]$w@.oW[ try{ H`XUJh DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 7y'RFD9@{ int nCount = input.readInt(); NR$3%0 nC6 nStartPos = new long[nCount]; W 8<&gh+ nEndPos = new long[nCount]; kP=eW_0D for(int i=0;i<nStartPos.length;i++) d~])K#oJ { X~bX5b[P nStartPos = input.readLong(); 6%\J"AgXO nEndPos = input.readLong(); \Gef \ } Y,qI@n< input.close(); hk;5w{t}} } v4a8}G catch(IOException e){e.printStackTrace ();} +qN>.y!Y catch(Exception e){e.printStackTrace ();} r5S[-`s; } '0;l]/i. ^ox=HNV @Z_x.Y6 private void processErrorCode(int nErrorCode) 0Uz"^xO[" { >.Pnkx* System.err.println("Error Code : " + nErrorCode); L8@f-Kk } c`)\Pb/O etQCzYIhn udK%> //停止文件下载 w0 M>[ 4 public void siteStop() EgEa1l!NSQ { dM.f]-g bStop = true; pHGYQ;:L for(int i=0;i<nStartPos.length;i++) B B{$&Oh fileSplitterFetch.splitterStop(); ]6,\r" O0x,lq SBu"3ym } 4!{KWL`A } Ot0ap$& //负责部分文件的抓取 TIqtF&@o4 **FileSplitterFetch.java ^cC,.Fdw */ ^'MT0j package NetFox; c1(RuP:S .|KyNBn soB,j3#p'* import java.io.*; >a<.mU|# import java.net.*; PudS2k_Qv JJ-( Sl Uk wP public class FileSplitterFetch extends Thread { d UE,U= sP pH*,( -a}Dp~j String sURL; //File URL 5+0gR
&|j long nStartPos; //File Snippet Start Position 20h}
[Q( long nEndPos; //File Snippet End Position h%na>G int nThreadID; //Thread's ID x3=A:}t8 boolean bDownOver = false; //Downing is over <18( boolean bStop = false; //Stop identical #b}Z`u?@ FileAccessI fileAccessI = null; //File Access interface _IHV7*u{; :1Xz4wkWS* aH(J,XY public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ,Q$q=E;X { GTPHVp&y this.sURL = sURL; :wyno#8`- this.nStartPos = nStart; Vi$~-6n& this.nEndPos = nEnd; "m$##X\ nThreadID = id;
IZ-1c1
fileAccessI = new FileAccessI(sName,nStartPos);//定位 J9nX"Sb } PCee<W_%YE / y40(l? 8mrUotjS public void run() Pl06:g2I { 6dr%;Wp while(nStartPos < nEndPos && !bStop) bjW]bRw { pZ{+c |-67\p] <]t%8GB2V try{ :as$4| URL url = new URL(sURL); yx8z4*]kH HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); wo{gG?B httpConnection.setRequestProperty("User-Agent","NetFox"); qbN
=4 String sProperty = "bytes="+nStartPos+"-"; A1$TXr httpConnection.setRequestProperty("RANGE",sProperty); ] )\Pqn( Utility.log(sProperty); Igt#V;kK"2 LKB$,pR~1l c9
eM/*: InputStream input = httpConnection.getInputStream(); Oc0a77@ //logResponseHead(httpConnection); U[-o> W# 9MJG;+B~ H [\o RId byte[] b = new byte[1024]; oG?Xk%7&\ int nRead; 3BUSv#w{i while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Y;M|D'y+ { !;v|' I nStartPos += fileAccessI.write(b,0,nRead); <8&au(I,vB //if(nThreadID == 1) h
0Q5-EA // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `:KY\ } M#6W(|V/ ifQ*,+@fxR Wq&if_ Utility.log("Thread " + nThreadID + " is over!"); ;?iW%:_, bDownOver = true; %3-y[f //nPos = fileAccessI.write (b,0,nRead); Np9<:GF1 } CAWNDl4 catch(Exception e){e.printStackTrace ();} BoWg0*5xb } dt]-,Y
} 1N-\j0au Y\k#*\'Y~ z'n:@E //打印回应的头信息 b94DJzL1z public void logResponseHead(HttpURLConnection con) {$
JYw{a { *u [BP@vE for(int i=1;;i++) &)ChQZA { U(g:zae String header=con.getHeaderFieldKey(i);
Cctu|^V if(header!=null) D_*WYV //responseHeaders.put(header,httpConnection.getHeaderField(header)); - % h.t+=U Utility.log(header+" : "+con.getHeaderField(header)); :U%W% else nh>vixe break; Y eo]]i{ } .@U@xRu7| } ^"2J]&x`G \V8PhO;j xJ8M6O8 public void splitterStop() *vxk@`K~ { mxC;?s;~ bStop = true; b5vC'B-! } 1~
3_^3OT *)T^ChD, #OD/$f_ } ,m:.-iy? (Zrj_P`0[ 0&|\N
? 8_ /* E,U+o $ **FileAccess.java kJsN|= *//文件访问(定位,写) &
G4\2l9 package NetFox;
xF'EiX ~ import java.io.*; E
A1?)|}n WiR(;m<g ]Ie 0S~ public class FileAccessI implements Serializable{ J @1!Oq> }rw8PZ9 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 E
KLyma&}Y RandomAccessFile oSavedFile; ]MitOkX long nPos; kfY}S 3$>1FoSk VU]`&`~J public FileAccessI() throws IOException |N 7M^ { N
+_t-5 this("",0); xy[3u?,&s! } | rtD.,m oIzj,v8$ yI public FileAccessI(String sName,long nPos) throws IOException ,f'CD{ E { 9F;>W ET oSavedFile = new RandomAccessFile(sName,"rw"); 6}Ci>_i4# this.nPos = nPos; 37.S\gO] oSavedFile.seek(nPos); K;H&n1 } YfKdR"i+. 8^+%I/S$ qWPkT$ u public synchronized int write(byte[] b,int nStart,int nLen) rcG"o\g@+ { 'yEHI int n = -1; c]o'xd,T8\ try{ {]@= ijjf oSavedFile.write(b,nStart,nLen); YZ8>OwQz2 n = nLen; [<yaXQxl } P{>!5|k catch(IOException e) >jLY" { O-hAFKx e.printStackTrace (); L\ "d }
|TH\`U DA,?} %pL''R9VF return n; 0znR0%~ } _8UU'1d 'S&zCTX7j 0pd'93C } 16( QR- p6Gy,C. []1C$.5DD /* *P=VFP **SiteInfoBean.java E4/Dr}4 */
>Abdd package NetFox; 0=1T.4+= N5
6g+,w%) } (73Syl# public class SiteInfoBean { 3;A)W18] SO'vpz{ N<VJ(20y private String sSiteURL; //Site's URL y?? XIsF private String sFilePath; //Saved File's Path x
g private String sFileName; //Saved File's Name vXZOy%$o private int nSplitter; //Count of Splited Downloading File '_FsvHQ f46t9dxp$ PKiy5D*8p public SiteInfoBean() >KhOz[Zg {//nSplitter的缺省值为5 :':s@gqr //default value of nSplitter is 5 9qzHS~l this("","","",5); 0 /U{p,r6` } K is"L(C yWo; a i<Zc"v; public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) VjZ|$k { `b7t4d* sSiteURL= sURL; Iit;F sFilePath = sPath; Eo]xNn/g sFileName = sName; 2pa5U;u:+ this.nSplitter = nSpiltter; 4>e&f&y~ c<Tf
2]vZE 7ZWgf"1j } y766;
X:J =GMkR+<) 8'io$6d= public String getSSiteURL() hMD|#A-< { SoSb+\*@h return sSiteURL; KB(8f* } M%P:n/j )1`0PJoHE j'"J%e] public void setSSiteURL(String value) $B5aje}i { r52gn(, sSiteURL = value; 6mxfLlZ } -X2Buz8 9EibIOD^/ I:1C8*/ public String getSFilePath() U8n V[ { M-Y_ Wb3 return sFilePath; !wh8'X* } =MDysb&: ],Do6
@M- P{lB50 public void setSFilePath(String value) sWnLEw { ;+hH sFilePath = value; v;D~Pa } YO}<Ytx =$JET<( s
R/F" public String getSFileName() ')<hON44EX {
_
*Pf return sFileName; +Q"4Migbe@ } r0% D58 *#+An<iT ; z[qDkL public void setSFileName(String value) 3{sVVq5Y { $Ri; ^pZw[ sFileName = value; _ZSR.w}j/ } wgGl[_) Y\g3hM pG;U2wE public int getNSplitter() \bvfEP { &E5g3lf return nSplitter; 'c$+sp ? } %YqEzlzF p947w,1![ N6i Q8P- public void setNSplitter(int nCount) R%[ c;i { dhK~O.~m nSplitter = nCount; P.9>z7l{ } lA8`l>I } ]Gq !`O1 :P0mx -r]W /* _L=h0H l **Utility.java oE]QF.n# */ -]M5wb2, package NetFox; G2:
agqL/ 4ID5q~ _u QOHwn public class Utility { <=C!VVk4f <x>Mo or}[h09qA public Utility() rf{rpe$ { v0.#Sl- )bscBj@ 3AN/
H } XUuN )i |Ds1 //线程睡眠 -m~#Bq public static void sleep(int nSecond) PALc;"]O { oe-\ozJ0 try{ aO4?m+ Thread.sleep(nSecond); {;6`_-As% } &6nWzF catch(Exception e) ~oY^;/ j { \z(gqkc 6 e.printStackTrace (); ?^\|-Gr } sD#.Oq4&]y } .U]-j\ 40m -ch6Q //日志 ^Xh^xL2cn public static void log(String sMsg) -PR N:'T { v mk2{f,g System.err.println(sMsg); '?(% Zxw%& } w ;^ra<*<+ </*6wpN >tW#/\x{ public static void log(int sMsg) sLxc(d'A { o|["SYIf System.err.println(sMsg); gc$l^`+M } O3kA;[f; } JDT`C2-Q X45%e! `3&v6 /* r mg}N **TestMethod.java 7J<5f) */ QhJiB%M package NetFox; 8v%o," &^Q/,H~S c\AfaK^KF public class TestMethod { ;u)I\3`*! 1bX<$>x9u SO0PF|{\r public TestMethod() [` 7ThHX { ///xx/weblogic60b2_win.exe 20Wg=p9L try{ cyz3,3\e SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); r*Ca}Z //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); +QJ#2~pE SiteFileFetch fileFetch = new SiteFileFetch(bean); eehb1L2(b fileFetch.start(); 5$C-9 } 11;MN catch(Exception e){e.printStackTrace ();} Btcy)LRk A~70 $qj2w"' } I
b5rqU\ E~"y$Fqe o?\?@H public static void main(String[] args) ZPYS$Ydy { tY4;F\e2|A new TestMethod(); ~Z'?LV<t } fI|Nc } d7bS
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