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/* ^'|\8 **SiteFileFetch.java xCd9b:jG */ 0-^wY8n-= package NetFox; dD2N!umW import java.io.*; I<I?ks import java.net.*; YJO,"7+ ]g/%w3G a%-P^M;a2 public class SiteFileFetch extends Thread { o.}?K>5 Eu AJ.n q1nGj SiteInfoBean siteInfoBean = null; //文件信息Bean 'ErtiD long[] nStartPos; //开始位置 (\si/& long[] nEndPos; //结束位置 fU+A~oL%I FileSplitterFetch[] fileSplitterFetch; //子线程对象 .g7ebh6D long nFileLength; //文件长度 `NC{+A boolean bFirst = true; //是否第一次取文件 p[QF3)9F boolean bStop = false; //停止标志 su`]l"[,] File tmpFile; //文件下载的临时信息 .>-`2B*/ DataOutputStream output; //输出到文件的输出流 GB+U>nf U+!H/R)( //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) R,hX *yVq public SiteFileFetch(SiteInfoBean bean) throws IOException NC 0H5 { xi6Fs, 2S siteInfoBean = bean; lrSo@JQ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 9oteQN{9 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); $+Hv5]/hb if(tmpFile.exists ()) 5Dy800.B2 { ~%4#R4& bFirst = false; >mT< AQ read_nPos(); KUfk5Y } :;u~M(R else 2w=0&wG4K { x@I@7Pvo3 nStartPos = new long[bean.getNSplitter()]; W"mkNqH nEndPos = new long[bean.getNSplitter()]; %$
^yot } Te"<.0~1 >9f-zv(n ,/\%-u?
1x |5}{4k~9J } :8;8-c a#=GLB_P( uBk$zs public void run() jZ <*XX { BZqb
o `9 //获得文件长度 * xs8/? //分割文件 ~BVg#_P //实例FileSplitterFetch ]?L?q2>& //启动FileSplitterFetch线程 <3;/,>^ Pm //等待子线程返回 HFwT
try{ Aa&3x~3+ if(bFirst) z(^p@&r)F { V#W(c_g nFileLength = getFileSize(); TA=Ij,z~ if(nFileLength == -1) ,\5]n&T;r { ?-O(EY1E System.err.println("File Length is not known!"); ^/HE_keY } 7581G$@ym else if(nFileLength == -2) (tEW#l'} { KM|[:v System.err.println("File is not access!"); S<Q6b_D } J#CF S G else wX7B&w8wV { nTjQ4y for(int i=0;i<nStartPos.length;i++) .1MXQLy { EOV<|WF> nStartPos = (long)(i*(nFileLength/nStartPos.length)); =o=)EU{~ } p/WEQ2 for(int i=0;i<nEndPos.length-1;i++) @4_CR { &l%#OI}OE nEndPos = nStartPos[i+1]; 4EuZe:'X } u~?]/-.TY nEndPos[nEndPos.length-1] = nFileLength; $g#j, } dL")E|\\k } (@`+Le SDV} bN "P< drz< //启动子线程 _y`'T;~OY fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; A0S6 4( for(int i=0;i<nStartPos.length;i++) 94W9P't { -4b9( fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Yc#o GCt siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), XaD}J:X q nStartPos,nEndPos,i); BZsw(l4/0' Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); b n^^|i fileSplitterFetch.start(); Lm'Ony^F } &&[j/d}J // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~@R=]l" siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %@*diJ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", hdN3r{ nEndPos = " + nFileLength); yq[C?N &N // fileSplitterFetch[nPos.length-1].start(); U,Z.MPQ TA}gCXE
e *8"5mC;" //等待子线程结束 @q5!3Nz //int count = 0; NK*~UePy //是否结束while循环 HI']{2p2}t boolean breakWhile = false; g;=jZ ep[7#\}5 wamqeb{u while(!bStop) LtH;#Q { Yk<?HNf write_nPos(); &e_M \D Utility.sleep(500); (q*T. breakWhile = true; V|xR`Q 0_qqBL.4 *BBP"_$ for(int i=0;i<nStartPos.length;i++) 6}Y^X { K*;=^PY if(!fileSplitterFetch.bDownOver) X"8Jk4y { tTF/$`Q#* breakWhile = false; )1J&tV*U break; !=cW+=1 } F:IG3 @ } HnioB=fc if(breakWhile) O|%><I?I break; &hd+x5 z7{b>oub(' r6 ,5&`& //count++; q(!191@C( //if(count>4) 7Y@&& // siteStop(); kHX- AsRc } 5@Ot@o !K(0)~u ]_|qv1K6 System.err.println("文件下载结束!"); vYmRW-1Zxq } FL0(q>$*8 catch(Exception e){e.printStackTrace ();} $+S'Boo } l4hC>q$T '!{zO"
1* K!HSQ,AC //获得文件长度 E n{vCN public long getFileSize() eNu`\ { tQz-tQg int nFileLength = -1; N\HOo-X try{ RH6qi{)i! URL url = new URL(siteInfoBean.getSSiteURL()); 98Pt&C? -B HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); a,M7Bbx httpConnection.setRequestProperty("User-Agent","NetFox"); RjSVa.x ~;il{ym *Yl9%x]3c int responseCode=httpConnection.getResponseCode(); "J%u
!~ if(responseCode>=400) <d$|~qS_ { LurBqr processErrorCode(responseCode); h&[]B*BLr return -2; //-2 represent access is error N!/^s": } z930Wi{@ ];Bh1 WJ=eV8Uk String sHeader; Skp&W*Ai HWFo9as""v #{UM4~|: for(int i=1;;i++) *hAq]VC}) { VoWlBH //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^l7u^j //Utility.log(in.readLine()); 4[Hf[. sHeader=httpConnection.getHeaderFieldKey(i); qL,! if(sHeader!=null) \@GA;~x.b { :=T+sT~ if(sHeader.equals("Content-Length")) &JtK<g { -+#\WB{AI nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 29 Yg>R!/ break; ^yu0Veypy } ~H7m7 } .1[K\t)2 else (.m0hN!~u break; m:)v>v u } DZilK: } "S_t%m&R catch(IOException e){e.printStackTrace ();} ygWo9? catch(Exception e){e.printStackTrace ();} oOmPbAY UOy`N~\gh+ O9dIobu4 Utility.log(nFileLength); 2u *o/L+ NK~j>>^;v F%+/j5~^ return nFileLength; I|n<B"Q6^ } @i$9c)D 9`$fU)K[Pl go@UE2qw //保存下载信息(文件指针位置) 0}PW<lU- private void write_nPos() (@pE { -s,^_p{H try{ !G90oW output = new DataOutputStream(new FileOutputStream(tmpFile)); tl
(2=\ output.writeInt(nStartPos.length); KArR.o } for(int i=0;i<nStartPos.length;i++) '_@Y { 5 nkx8JJ // output.writeLong(nPos); >hJ$~4? output.writeLong(fileSplitterFetch.nStartPos); |K,9EM3 output.writeLong(fileSplitterFetch.nEndPos); fJH09:@^% } $[by) output.close(); B=jJ+R } ic%<39 catch(IOException e){e.printStackTrace ();} +5JCbT@y catch(Exception e){e.printStackTrace ();} nws '%MK) } l|/h4BJ' #Ne<=ayS G{pfyfF //读取保存的下载信息(文件指针位置) m$NBG w private void read_nPos() P|!GXkS { `kpX}cKK} try{ X2}\i5{ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 68[3
/ int nCount = input.readInt(); \j+O |#`|) nStartPos = new long[nCount]; +%OINMo.A nEndPos = new long[nCount]; O={4 >>F for(int i=0;i<nStartPos.length;i++) \3-XXq { JN .\{ Y nStartPos = input.readLong(); +?w 7Nm` nEndPos = input.readLong(); TUw^KSa } m$ )yd~ input.close(); }/nbv;) } X};m \Bz catch(IOException e){e.printStackTrace ();} ] QGYEjW catch(Exception e){e.printStackTrace ();} wc*5s7_ } j&6,%s-M`a GvF8S MO[x '_lyoVP private void processErrorCode(int nErrorCode) ' Ph { &Gp@,t System.err.println("Error Code : " + nErrorCode); A[
9
@:z } W2D^%;mw AjKP -[ J;W(}"cFq //停止文件下载 =Mzg={)v public void siteStop() g{.>nE^Sc5 { l"5$6h bStop = true; s:'M[xI for(int i=0;i<nStartPos.length;i++) ZR.1SA0x?O fileSplitterFetch.splitterStop(); MUhC6s\F w,bILv) h$F;=YS } o@>{kzCx } / *RDy!m //负责部分文件的抓取 7g[m,48{ **FileSplitterFetch.java orVsMT[A */ b'Pq[ ) package NetFox; ?&I gD. Q&]
}`Rp= M#LQz~E import java.io.*; #+N\u*-S import java.net.*; bE#=\kf| IfzHe8> veFl0ILd public class FileSplitterFetch extends Thread { *%l&'+ zpV@{%VSj x%23oPM String sURL; //File URL `zGK$,[% long nStartPos; //File Snippet Start Position Tf7$PSupP long nEndPos; //File Snippet End Position
gcqcY int nThreadID; //Thread's ID r(h&=&T6 boolean bDownOver = false; //Downing is over BIEc4k5( boolean bStop = false; //Stop identical d)1)/Emyj FileAccessI fileAccessI = null; //File Access interface jb~a z 7?-eR- )z&0 g2Am public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException (JH LWAH { 5L bU'5
this.sURL = sURL; ]wh8m1 this.nStartPos = nStart; I<e[/#5P\` this.nEndPos = nEnd; /d=i0E3 nThreadID = id; nF~</> fileAccessI = new FileAccessI(sName,nStartPos);//定位 ,Xs%Cg_Ig } vo)pT 4!p~Mr[E )^7Y^ue public void run() F`SOF O { <h^'x7PkW5 while(nStartPos < nEndPos && !bStop) VgtWT`F.I { rUEoz |e4a ^"7tfo8 TU&6\]yF_ try{ S8*VjG?T\ URL url = new URL(sURL); lTJ1]7) HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o90SXa&l/ httpConnection.setRequestProperty("User-Agent","NetFox"); ePdM9% String sProperty = "bytes="+nStartPos+"-"; F@Y)yi?z httpConnection.setRequestProperty("RANGE",sProperty); eZ5UR014 Utility.log(sProperty); "~Twx]Z xx0s`5 [hTGWT3 InputStream input = httpConnection.getInputStream(); x|i"x+o //logResponseHead(httpConnection); Qmle0ae |7n&I`# 2
*IF byte[] b = new byte[1024];
=]&?(Gq int nRead; 'c<vj
jIg while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) /%C6e
)7BL { 8:;_MBt nStartPos += fileAccessI.write(b,0,nRead); bq[j4xH0X //if(nThreadID == 1) *(YtO // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Yr@_X } 2ME"=!&5 0JQy-hpF :_JZn`Cab Utility.log("Thread " + nThreadID + " is over!"); Eb SH)aR bDownOver = true; }c1Vu //nPos = fileAccessI.write (b,0,nRead); @GqPU,RO } 1{4d)z UB catch(Exception e){e.printStackTrace ();} [Av#Z)R } fN~kdm. } 0h-holUf}~ biG=4?Xl ^0"NcOzzxl //打印回应的头信息 zqfv|3-!} public void logResponseHead(HttpURLConnection con) DrLNY"Zq { []:;8fY for(int i=1;;i++) $T{,3;kt { *6^|i} String header=con.getHeaderFieldKey(i); e`k6YO if(header!=null) fL.;- //responseHeaders.put(header,httpConnection.getHeaderField(header)); =MDir$1Z Utility.log(header+" : "+con.getHeaderField(header)); zIt-mU else U^vQr%ha break; #&0)kr66 } ZOc1 vj } fiOc;d8 8T92;.~( 7)$U>|= public void splitterStop() ";}Lf1M9 { Vd3'dq8/? bStop = true; ^6[KzE#* } 8v@6 &ras@ kK&tB q9.)p } I Gv_s+O-* vpXC5|9U >JwdVy^ /* v1<gNb)` **FileAccess.java `bu3S}m7 *//文件访问(定位,写) Af1izS3 package NetFox; Cnd70tbD ) import java.io.*; $'e;ScH rB;`&)- @3KVYv,q public class FileAccessI implements Serializable{ 21D4O,yCe }HtP8F8!x //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 w{k8Y? RandomAccessFile oSavedFile; 5,`U3na, long nPos; EJ{Z0R{{ Ze~$by|9f B+S
&vV public FileAccessI() throws IOException 5w"f.d' { ]\5@N7h this("",0); )V~Fl$A } .z&V!2zp m76**X 6g4CUP'Y public FileAccessI(String sName,long nPos) throws IOException q9o =,[ { { 6Lkh oSavedFile = new RandomAccessFile(sName,"rw"); [:sP Z{ this.nPos = nPos; %y.9S=,v, oSavedFile.seek(nPos); ^;+lsEW } !Sr^4R +Z "
]
0ER l=D E|: public synchronized int write(byte[] b,int nStart,int nLen) 2uFaAAT { @QI]P{ int n = -1; k1Zu&4C\ try{ hnZI{2XzBE oSavedFile.write(b,nStart,nLen); c'OJodpa n = nLen; sj a;NL } J7$1+|" catch(IOException e) N[X%tf\L]F { rg+28tlDn e.printStackTrace (); S!.aBAW } #n%?} nN>D=a"&F 3U<\y6/ return n; 0h!2--Aur } BF8n: }9U @_^QBw0 %Y%+K5;AZ } }u
cqzdk#2 iKv`[k C>7Mx{ !H /* fHvQ 9*T **SiteInfoBean.java f/Km$#xOr */ #b\&Md|; package NetFox; xP*9UXZ4P wpu]{~Y 2!>phE public class SiteInfoBean { &:= Gp9>R~$ {YZ)IaqZ private String sSiteURL; //Site's URL C.L5\"% private String sFilePath; //Saved File's Path ,{ CgOz+Ul private String sFileName; //Saved File's Name VOwt2&mZ private int nSplitter; //Count of Splited Downloading File ?2[=llS4 fOiLb.BW k/AcXU%O+ public SiteInfoBean() l2GMVAca {//nSplitter的缺省值为5 ]Vhhx`0 //default value of nSplitter is 5 +JZ<9,4 this("","","",5); -cyJjLL* } ;d G.oUk= $>v^%E;Y4 q_>DX,A public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) j>gO]*BX~ { T'i9_V{ sSiteURL= sURL; toPA@V sFilePath = sPath; hor ok:{ sFileName = sName; Djx9TBZ5 this.nSplitter = nSpiltter; OP
|{R7uC u~<>jAy HP|,AmVLl } =sRd5aMs qTC`[l . hHt+ public String getSSiteURL() |[D~7|? { ;Fcdjy return sSiteURL; Dn$zwksSs } 1pXAPTV \sHM[nF0 g _;5" public void setSSiteURL(String value) .Y'kDuUu { B;4hI? sSiteURL = value; -qfd)A6] } #@BM1BpQ I5'^tBf[{ Xn.zN>mB public String getSFilePath() 9Q=g]int u { OTtSMO
return sFilePath; H(Mlf } iJ42` 51 tnqW!F~ /r@P\_ public void setSFilePath(String value) \|R`wFn^P { QC~B8 ] sFilePath = value; SynxMUlA } l1jS2O( X X{:$f+ 2t1 WbP1 public String getSFileName() v0X5`VV { '\1%%F7 return sFileName; Q9K
Gf; } R.A}tV=j# !f)'+_d gtJ^8khME public void setSFileName(String value) ]gTaTY { )_+" sFileName = value; _kH#{4`Hw } %P_\7YBC> fouy?? '7>Vmr6 public int getNSplitter() QC4_\V>[ { tt|U,o return nSplitter; AEPgQ9#E } |Y(].G, 4TG| dyWWgC%A public void setNSplitter(int nCount) ksDG8^9>] { "$0f.FO:i nSplitter = nCount; W$gSpZ_7 } K/Q;]+D } &>I8^i 'P@a_*I n$`Nx\ v /* H=X>o.iVqi **Utility.java zF)_t S */ m>:%[vm package NetFox; U@& <5' SKLQAE5 Y141Twjvd public class Utility { 54uTu2 5*g@;aR1 e-qr d public Utility() 68I4 MZK>4 { EXa6"D l*'8B)vN2 MLBZmM ' } uO[4 WZ W\} VZY //线程睡眠 A*E4hop[ public static void sleep(int nSecond) ,z%F="@b9 { Crpkq/ M try{ ::TUSz2/2 Thread.sleep(nSecond); bL0+v@(r } DMf^>{[ catch(Exception e) d_5h6Cz4 { ~d{E>J77j e.printStackTrace (); ! \awT } t"0~2R6i } a$aI% SI;G|uO;/ //日志 uT-WQ/id public static void log(String sMsg) }a<MVG:>SF { ,nHz~Xi1t System.err.println(sMsg); +nJ}+|@K } G)< k5U4 \re.KB#R RtqW!ZZ:H public static void log(int sMsg) B.Xm*adBT { ,{oP`4\Lm System.err.println(sMsg); W_sDF; JP } "X]ufZ7 } //LXbP3/ ;V@}
oD+ `gss(o1} /* { @-Q1 **TestMethod.java ?: meix */ (4g;-*N package NetFox; ]/$tt@h 'rR\H2b
;m`I}h< public class TestMethod { }kOhwT8sI klch!m=d J25>t^ public TestMethod() (nE$};c<b2 { ///xx/weblogic60b2_win.exe wfZ'T#1 try{ Ak_;GvC! SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 6]rrj //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); zP9 HYS SiteFileFetch fileFetch = new SiteFileFetch(bean); /(}V!0\? fileFetch.start(); D!Gm9Pa} } E'r*
g{, catch(Exception e){e.printStackTrace ();} W6_3f-4g omRd'\ RO Q?Nzt;)!. } (c}0Sg {M%"z,GL7J C*78ZwZ public static void main(String[] args) "M:arP5f {
(K?[gI new TestMethod(); hh8UKEM- } 17
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