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/* R#w9%+ **SiteFileFetch.java zv[pfD7a */ 'awZ-$# package NetFox;
MTUJsH\ import java.io.*; /By`FW Y import java.net.*; dp'xd>m +Oa+G.;)o4 NP< {WL# public class SiteFileFetch extends Thread { l7M![Ur 4!^flKZQ QH.zsqf( SiteInfoBean siteInfoBean = null; //文件信息Bean T3#KuiwU9 long[] nStartPos; //开始位置 >wJt# ZB long[] nEndPos; //结束位置 (HD=m,} FileSplitterFetch[] fileSplitterFetch; //子线程对象 u~VvGLFf5, long nFileLength; //文件长度 c"x-_Uk boolean bFirst = true; //是否第一次取文件 8
DE%ot boolean bStop = false; //停止标志 "Oj2B|:s& File tmpFile; //文件下载的临时信息 6-vQQ-\ DataOutputStream output; //输出到文件的输出流 B9(e"cMm .6xIg+ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 6Lhfb\2? public SiteFileFetch(SiteInfoBean bean) throws IOException oA'LQ { p?qW;1 siteInfoBean = bean; H%
"R _[+ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); m#kJ((~ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); [23F0-p if(tmpFile.exists ()) p@Ng.HE { f1}am< bFirst = false; l
S m7i read_nPos(); ((T0zQ7= } <sNkyQ else -D-]tL6w { 1j":j %9M nStartPos = new long[bean.getNSplitter()]; X!/o7< nEndPos = new long[bean.getNSplitter()]; Z;4pI@u } $Z!7@_Ys L4?)N&V C^W9=OH C.rLog# } =SqI#v tP;^;nw f~{@(g&Gl public void run() y%4G[Dz { 1p |}=R //获得文件长度 ZlxJY%oeu //分割文件 s1| +LT,D //实例FileSplitterFetch 3duWk sERC //启动FileSplitterFetch线程 Z+ ?V10$ //等待子线程返回 cm!|A)~ try{ V( A p|I:G if(bFirst) d|?'yX { kICZc{} ` nFileLength = getFileSize(); S85}&\m&4 if(nFileLength == -1) dD{{G:V { ]BiLLDz( System.err.println("File Length is not known!"); P.Uz[_&l6 } gk.c"$2 else if(nFileLength == -2) \ Rff3$ { JDA :)[; System.err.println("File is not access!"); p[Yja y+ } Nt^9N
#+N else Y
Cbt(nmr { B}y`E
< for(int i=0;i<nStartPos.length;i++) !J@!P?0. C { /18VQ nStartPos = (long)(i*(nFileLength/nStartPos.length)); >lg-j-pV } O?I~XM'S for(int i=0;i<nEndPos.length-1;i++) ">V.nao { yu>DVD nEndPos = nStartPos[i+1]; ~ d!F|BH4 } /^F$cQX( nEndPos[nEndPos.length-1] = nFileLength; ]IZn#gnM } ',<Bo{ } zLB7'7oP X\dPQwasM ~c*$w O\ //启动子线程 8ezdU" fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; G6?+Qzr for(int i=0;i<nStartPos.length;i++) !gm;g}]szG { %1Pn;bUU! fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !qjIhZi siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), M],}.l nStartPos,nEndPos,i); >,V~-Tp Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); K4V\Jj1l fileSplitterFetch.start(); f4Yn=D=_ } Q#}
0pq // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1dg y-$H~ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); wx,yx3c ( // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", `l0&,] nEndPos = " + nFileLength); 4Sq[I // fileSplitterFetch[nPos.length-1].start(); &1:_+ 4)i(`/U :XP/ `%: //等待子线程结束 M-Tjp'=* //int count = 0; @D3Y}nR: //是否结束while循环 `- \J/I boolean breakWhile = false; e{<r<]/j +v7mw<6s fA k]]PU while(!bStop) ^lp#j;Df { nhm)P_p write_nPos(); e[(XR_EY Utility.sleep(500); mEUdJvSG( breakWhile = true; rrSs Qq (<"uV%1 *C*'J7 for(int i=0;i<nStartPos.length;i++) jM'kY|<g; { c9 c_7g'q- if(!fileSplitterFetch.bDownOver) >)&]Ss5J { S-$N! G~! breakWhile = false; :E>"z6H break; \:To>A32 } v9<'nU WVR } 0E5"}8 if(breakWhile) 2;z~xR break; E W{vF| zP8a=Iv nSM8o<)H //count++; M!9gOAQP //if(count>4) U>,E]' // siteStop(); /g_cz&luR } M'n2 j p:GB"e9>H b3Uw"{p System.err.println("文件下载结束!"); fXV+aZ } xxsax/h catch(Exception e){e.printStackTrace ();} 7l%]/`Y- } S{q c1qj >+P5Zm(_ QQnpy.`:/ //获得文件长度 ^Pq4 n%x public long getFileSize() o<Esh;;*nm { -Dx_:k|k int nFileLength = -1; %l#i9$s try{ T;f`ND2fY URL url = new URL(siteInfoBean.getSSiteURL()); 94>EA/+Ek HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DaN=NURDV httpConnection.setRequestProperty("User-Agent","NetFox"); 4DYa~ =w KXQ &u{[< )H'SU_YU int responseCode=httpConnection.getResponseCode(); %]2hxTV if(responseCode>=400) $mV1K)ege { 907N;r processErrorCode(responseCode); VDyQv^=# return -2; //-2 represent access is error vSOO[.= } NM`5hd{ wc%Wy|d h2b,( String sHeader; zXop@"(e rY~!hZ ,#u"$Hz8p for(int i=1;;i++) _DlX F { >;$C@ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); cILI%W1 //Utility.log(in.readLine()); _XO3ml\x@ sHeader=httpConnection.getHeaderFieldKey(i); j;GH|22 if(sHeader!=null) eVXlQO { ?>p(* if(sHeader.equals("Content-Length")) &$1ifG { &^v5 x" nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); !R;NV|.eI6 break; O7M8!3Eqm } ``zgw\f[% } y*BS
%xTF else ?YeUA =[MC break; &!xePKvO6k } ko2T9NI:S } W7F1o[ catch(IOException e){e.printStackTrace ();} $j+RUelFY catch(Exception e){e.printStackTrace ();} mM[!g'* BrHw02G _VjfH2Y Utility.log(nFileLength); )2t DX=D u\jQe@j
' iOFp 9i=j return nFileLength; k3HPY}- } pQ_EJX) B#+0jdF; o#D;H[' A //保存下载信息(文件指针位置) K~C6dy
private void write_nPos() EO_:C9=d{ { -KuC31s_W try{ D<16m<b output = new DataOutputStream(new FileOutputStream(tmpFile)); ,esryFRG output.writeInt(nStartPos.length); tRl01&0S for(int i=0;i<nStartPos.length;i++) g+X .8>= { 2ncD,@ij // output.writeLong(nPos); ~yGD("X output.writeLong(fileSplitterFetch.nStartPos); #cnh
~O output.writeLong(fileSplitterFetch.nEndPos); XTibx;yd< } uPmK:9]3R output.close(); gPW% *|D, } [1LlzCAFBw catch(IOException e){e.printStackTrace ();} x%hV5KW catch(Exception e){e.printStackTrace ();} l"{1v~I } u/I|<NAC, XY_zFF vhEqHjR: //读取保存的下载信息(文件指针位置) 2`Ojw_$W7 private void read_nPos() ^n @dC? { 5~pQ$- try{ !Qqi% DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); eTeZ^G int nCount = input.readInt(); ef Moi 'v nStartPos = new long[nCount]; nT;Rwz$3 nEndPos = new long[nCount]; **D3.-0u& for(int i=0;i<nStartPos.length;i++) Az`c ?
W% { UdiogXZ nStartPos = input.readLong(); ,:E*Mw: nEndPos = input.readLong(); \~(scz$ } mSg{0_: input.close(); }Ai_peO0a } uZg[PS=@!X catch(IOException e){e.printStackTrace ();} ~l^Q~W-+ catch(Exception e){e.printStackTrace ();} I*SrKZb } :rBPgrt $ #*";b)QY C8xx R~mq private void processErrorCode(int nErrorCode) Mur)' { :j)v=qul System.err.println("Error Code : " + nErrorCode); v7h!'U[/ } =hP7Hea(N F=B[%4q`% (/^s?`1{N? //停止文件下载 ?f8)_t}^\ public void siteStop() *K57($F { TI<?h(*R_ bStop = true; mr6 ~8I for(int i=0;i<nStartPos.length;i++) EZY <k# fileSplitterFetch.splitterStop(); P,eP>55'K FJ/c(K -PG81F&K } pz hPEp; } kA"|PtrW //负责部分文件的抓取 tQ@%3` **FileSplitterFetch.java _oILZ, */ r'bPSu, package NetFox; -5 Q
gJ B&M-em= xpU7ZY import java.io.*; TdCC,/c3 import java.net.*; B1U<m=Y sU=7)*$ ZHN@&Gg6) public class FileSplitterFetch extends Thread { Zw`9B \se
/2l MmbS["A String sURL; //File URL Fmd^9K long nStartPos; //File Snippet Start Position !1b4q/ long nEndPos; //File Snippet End Position 5fT"`FL? int nThreadID; //Thread's ID auai@)v6 boolean bDownOver = false; //Downing is over [wO|P{8\" boolean bStop = false; //Stop identical blk4@pg FileAccessI fileAccessI = null; //File Access interface +W7#G `> JQ~[$OGH SJJ[y"GvD public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException "C/X#y
{ 7:S4 Ur this.sURL = sURL; hHsN(v this.nStartPos = nStart; X1C
&;5 this.nEndPos = nEnd; 0XWhSrHM nThreadID = id; mH,L,3R;R fileAccessI = new FileAccessI(sName,nStartPos);//定位 m+a\NXWR?N } l} =@9A@ v\3
\n3[u LK}*k/eG public void run() &*nq.l76X` { 1zP)~p3a while(nStartPos < nEndPos && !bStop) 8{f~tPY { Gm.sl}, y[64O x b;5&V_ try{ Pe,:FIp, URL url = new URL(sURL); 0|=,!sY HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection ();
`mE>h4 httpConnection.setRequestProperty("User-Agent","NetFox"); K-2oSS56 String sProperty = "bytes="+nStartPos+"-"; DfsPg':z httpConnection.setRequestProperty("RANGE",sProperty); QSNPraT Utility.log(sProperty); QEQ/ )L0NX^jW; JP1XH k InputStream input = httpConnection.getInputStream(); [X7KlS9x2 //logResponseHead(httpConnection); %ZR<z$ gy*c$[NS$ !SPu9: byte[] b = new byte[1024]; =A]*r9 int nRead; sd,KB+) while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) EZee
kxs { |6O7_U#q nStartPos += fileAccessI.write(b,0,nRead); NE)Yd7m- //if(nThreadID == 1) 2CY4nSKW // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); &~K4I } M?ObK#l!_ ]5',`~jkF 8fSY@ Utility.log("Thread " + nThreadID + " is over!"); =MjkD)l bDownOver = true; q\n,/#'i~ //nPos = fileAccessI.write (b,0,nRead); kc7,F2=F } Kk\TW1w3 catch(Exception e){e.printStackTrace ();} f6])M) } 8svN*`[ } oB$c-!& \n<9R8g5 mFgrT //打印回应的头信息 Z'!i"Jzq|{ public void logResponseHead(HttpURLConnection con) ?_t_rF(?6 { R
KXhD PA for(int i=1;;i++) NyR,@n1 { ^iqy|zNtn String header=con.getHeaderFieldKey(i); |*%i]@V= if(header!=null) \#sdN#e;XA //responseHeaders.put(header,httpConnection.getHeaderField(header)); bamQ]>0|>! Utility.log(header+" : "+con.getHeaderField(header)); _zK
~9/5 else Mc9J Fzp break; 1'YUK"i } ?ocBRla } QX+Xi<YE- W QqOXF 2Bz\Tsp public void splitterStop() @:Emmzucv| { <
UD90} bStop = true; re)7h$f} } E"zC6iYZ; k!"6mo@rd [:gp_Z& } ,v#O{ma }B ?_>0 4Ifz-t/ /* `rest_vu **FileAccess.java u\q(v D. *//文件访问(定位,写) O~#A )d6 package NetFox; HV=P!v6 import java.io.*; _ -|+k &d_2WQ} nIWY<Z" public class FileAccessI implements Serializable{ )W/_2Q. k![oJ.vHD //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 rtdEIk RandomAccessFile oSavedFile; "BZL*hHq long nPos; T,9pd;k AD~_n^ ~~3*o public FileAccessI() throws IOException :(YFIW`59 { 4YgO1}%G this("",0); ~wQ M
?h } 'Ll'8 ps S.; ahce Z.b?Jzj public FileAccessI(String sName,long nPos) throws IOException W1JvLU5L*r { @:}l a oSavedFile = new RandomAccessFile(sName,"rw"); ?=,7'@e this.nPos = nPos; TDX~?>P oSavedFile.seek(nPos); +45.fo } '?Xf(6o1 ^fj30gw7\5 A_Y5{6@ public synchronized int write(byte[] b,int nStart,int nLen) Oe21noL { `Y3\R# int n = -1; #y
f try{ &ZL4/e oSavedFile.write(b,nStart,nLen); G2&,R{L6w n = nLen; }yaM.+8. } N , ,[V
catch(IOException e) 30YH}b#B { Ln8r~[tVE< e.printStackTrace (); ]sI\.a } \c1>15 bPIo9clq 9
^=kt 2[ return n; QJSi|&Rx&? } K{9 .I]EP- %<|cWYM="z } s_3a#I !p Q*m`Xo 9&zQ5L> /* sJMpF8
**SiteInfoBean.java WidLUv */ y!T8( package NetFox; j_.tg7X R5xV_;wD M eYu public class SiteInfoBean { %I;uqf &79F
Uac >DAi-`e private String sSiteURL; //Site's URL ]GDjR'[z private String sFilePath; //Saved File's Path s@p:XO private String sFileName; //Saved File's Name {I/t3.R` private int nSplitter; //Count of Splited Downloading File "jf_xZ$H- U#%+FLX@w :jJ0 +Q public SiteInfoBean() f?TS#jG4} {//nSplitter的缺省值为5 (
j:eky //default value of nSplitter is 5 &[
,* this("","","",5); dM-~Qo } .LGA0 [<sN " fNV-_^,R9 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) *;l[| { 7=s7dYlu sSiteURL= sURL; -"I9` sFilePath = sPath; 3_>=Cv} sFileName = sName; CSH*^nk':O this.nSplitter = nSpiltter; FD5OO;$ {{AZW (C.aQ)|T } Fzt7@VNxc $-.*8*9 TPLv]$n public String getSSiteURL() O)"Z% B { lYey7tl{ return sSiteURL; DPCQqV |7 } iba8G]2 4y!GFhMh rxj# public void setSSiteURL(String value) ND/oKM+? { cYBjsN(!A| sSiteURL = value; 6!8uZ>u%Vg } )@<HG$# |{RCvm 9v1 Snr public String getSFilePath() {;Oj { 9m<%+S5& return sFilePath; U;*O7K=P } WXG0Z s#(7D3Pr# L* ScSxw public void setSFilePath(String value) p.H`lbVY { IJC]Al,df sFilePath = value; etQS&YzC } bP,Ka i^8w0H<-@v /B|"<`-H public String getSFileName() CAmIwAx6; { ff=RKKnN return sFileName; k5*Z@a } A|GsbRuy ,c
0]r;u! _#uRKy<`N public void setSFileName(String value) jUDE)~h { qIB2eCXw sFileName = value; ,1]VY/ } \FF|b"E_= ",' Zr<T V;Q@'<w public int getNSplitter() @jq H8 { fAfB.|cd return nSplitter; rV2>;FG } foB&H;A4oC 5DO}&%.xt Vy^mEsQC+h public void setNSplitter(int nCount)
@1U6sQ { [z6P]eC7 nSplitter = nCount; Vt-V'`Y } eu?P6>urA } [{#n?BT P.(z)!] 0DN&HMI# /* t3C#$> **Utility.java q^7=/d8 */ 9$}>O] package NetFox; :XTxrYt28 &Aym@G|k? GaV OMT public class Utility { .y0u"@iF Yv2L0bUo: >h~>7i(A public Utility() wM#l`I { 3>=G-AH/$K SpOSUpl% %e_){28 n } prB:E[1 8#4Gs Q" //线程睡眠 um\A public static void sleep(int nSecond) L`fT;2 { }WF6w+ try{
bjN"H`Q Thread.sleep(nSecond); t}MT<Jj } )i\foSbB`V catch(Exception e) \`%#SmQF { W .Al\!Gi e.printStackTrace (); V8b^{}nxt } 1^[]#N-Bu } NxB/U_j ;=@?( n //日志 ?%/*F<UVQ public static void log(String sMsg) zy~*~;6tW { ^K
9jJS9K System.err.println(sMsg); iR8;^C.aT } (C%qA<6 t+j dV 3M'Y'Szm public static void log(int sMsg) ej&o,gX { o =F!&]+ System.err.println(sMsg); <l>L8{-3 } E/D@;Ym18 } jO`L:D/C vkW;qt}yO 'C;KNc /* r4iT
9D **TestMethod.java Jq+@%#G */ Ie8SPNY-H package NetFox; EJJ&`,q B*^QTJ L:jv%;DM public class TestMethod { F$9+WS`c 2%MS$Fto |Z$)t%' public TestMethod() J`wx72/-ZW { ///xx/weblogic60b2_win.exe U;gy4rj try{ k_Lv\'Ok SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); JqEo~]E] //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); .tK]-f2 SiteFileFetch fileFetch = new SiteFileFetch(bean); SK_N|X]. fileFetch.start(); 0,iG9D7 } ?:F Jc[J catch(Exception e){e.printStackTrace ();} -NDB.~E^DJ %*Yb
J_j7 tcI Z
2H% } ("=24R=a Cio(Ptt: t,kai6UM public static void main(String[] args) *O-m:M!eA { nrM-\' new TestMethod(); b'RBel;W } 0iz\<'
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