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/* }<~(9_+ **SiteFileFetch.java `qJJ{<1&U */ t*= nI $ package NetFox; ~R[ k^i.Y import java.io.*; /W .s1N import java.net.*; MH#Tp#RG UJ,vE}=_{ ]){ZL public class SiteFileFetch extends Thread { E"'u2jEG^ se.HA +\ftSm> SiteInfoBean siteInfoBean = null; //文件信息Bean EPJ>@A>;D long[] nStartPos; //开始位置 Y-bTKSn long[] nEndPos; //结束位置 S"*k#ao FileSplitterFetch[] fileSplitterFetch; //子线程对象 pnuo;r s long nFileLength; //文件长度 &wlD`0v boolean bFirst = true; //是否第一次取文件 I=dn]}b#P boolean bStop = false; //停止标志 0uD3a-J File tmpFile; //文件下载的临时信息 yf&_l^! DataOutputStream output; //输出到文件的输出流 SZXSVz0j rGQD+ d //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) L*4"D4V public SiteFileFetch(SiteInfoBean bean) throws IOException k.b=EX| { Pm6U:RL siteInfoBean = bean; +@]k[9 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 6~sU[thGW tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); iT:i
'\~ if(tmpFile.exists ()) <lR:^M[v5< { Zj -#"Gm bFirst = false; sSfP.R read_nPos(); oUn+tu: } ^~N:lW#= else P>rRD`Yy\ { v {r %/* nStartPos = new long[bean.getNSplitter()]; A{4,ih"5 nEndPos = new long[bean.getNSplitter()]; 9<0yz?b': } t]0DT_iE E[#VWM
I c*B< -
l<5 U]}F A2 } Q9AvNj>X "Y^j=?1k S`YT"|~ public void run() tl /i { `Y.~eE //获得文件长度 I4%kYp] //分割文件 9]Ue%%vM //实例FileSplitterFetch = r/8~~= //启动FileSplitterFetch线程 N$Ad9W?T //等待子线程返回 4Cu\|"5) try{ ECi;o1hda if(bFirst) R~iv%+ { oh:9v+ nFileLength = getFileSize(); '*L6@e#U if(nFileLength == -1) LI@BB:)[ { s}". po] System.err.println("File Length is not known!"); ~}j+~ } u;
KM[FmK else if(nFileLength == -2) 'fl.&"/r { UFT JobU System.err.println("File is not access!"); pTi7Xy!Cw } MvZa;B else "[P3b"=gW { q/zU'7%@ for(int i=0;i<nStartPos.length;i++) al}J^MJ { s&pnB nStartPos = (long)(i*(nFileLength/nStartPos.length)); vE^tdzAG } @Q,Q"c2 for(int i=0;i<nEndPos.length-1;i++) Z@dVK`nD { Z" ;q w nEndPos = nStartPos[i+1]; mrRid}2 } 8Yk*$RR9 nEndPos[nEndPos.length-1] = nFileLength; 17?YN< } :0B 7lDw } =q]!"yU[d ws9IO ?|&G jr0j0$BF //启动子线程 3%5YUG@ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 4j=K3m for(int i=0;i<nStartPos.length;i++) P#!N { -_Z 4)"k fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N8pL2y:R[P siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), p&RC#wYu nStartPos,nEndPos,i); 9o5D3
d
K Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); >nSt<e fileSplitterFetch.start(); qJ`:$U } {*B0lr` // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), MAkr9AKb, siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); \AroSy9 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 3E*m.jX nEndPos = " + nFileLength); Gu~*ZKyJ // fileSplitterFetch[nPos.length-1].start(); t}_ #N'` tjFX(;^[ rWL;pM< //等待子线程结束 <$e|'}>A //int count = 0; an"~n`g //是否结束while循环 T8A(W boolean breakWhile = false; wxvi)|) 9r]|P}yuS =XR6rR8 while(!bStop) =${.*,o { '+_>PBOc write_nPos(); A_9^S! Utility.sleep(500); DBHy%i breakWhile = true; !-7n69:G U)bv,{-q 0i_:J for(int i=0;i<nStartPos.length;i++) b`-|7<s { *z VN6wG{ if(!fileSplitterFetch.bDownOver) *
HKu%g { wv3,%
lN breakWhile = false; 'M >m$cCMZ break; VGQ~~U7}@ } ;Z{D@g+ } QnVr)4" if(breakWhile) \_1a#|97e break; )6)bI.BY v,ssv{gU VQla.Y //count++; 2;
^ME\
//if(count>4) JaY"Wfc // siteStop(); v~Q'm1!O4\ } hU#e\L 7 )cJ>&g4] } jj) System.err.println("文件下载结束!"); YGyv)\ } \2s`mCY catch(Exception e){e.printStackTrace ();} ?A3L8^tR } tON>wmN XH!#_jy /g<Oh{o8 //获得文件长度 ~(d
{j}M> public long getFileSize() SQ>i:D; { 5YD~l(,S1] int nFileLength = -1; sP(+Z^/ try{ Z[. M>| URL url = new URL(siteInfoBean.getSSiteURL()); 6$r\p2pi0 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); p)IL(_X) httpConnection.setRequestProperty("User-Agent","NetFox"); f4f2xe7\Q Ym6d'd<9( .hat!Tt9 int responseCode=httpConnection.getResponseCode(); /d3Jd.l! if(responseCode>=400) q\6(_U#Tl { ~ skp}g] processErrorCode(responseCode); ! K>iSF< return -2; //-2 represent access is error Uq
.6h } sasurR|; 5BhR4+1J {6'Xz String sHeader; )dT@0Ys% nYyhQX~]B %T/@/,7h for(int i=1;;i++) ~Bzzu %S { 9|+6@6VY! //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ote,`h //Utility.log(in.readLine()); eTuqK23 sHeader=httpConnection.getHeaderFieldKey(i); i5 rkP`)j if(sHeader!=null) R+M&\ 5 { n<ZPWlJ if(sHeader.equals("Content-Length")) y}odTeq { 9@
tp# nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 4_R|3L break; Kw
-SOFE } -R`{]7V } 3P
cVE\GN else g$nS6w|5H break; ~r --dU } YlHP:ZW-cu } I~GF%$-G catch(IOException e){e.printStackTrace ();} " 9Gn/-V> catch(Exception e){e.printStackTrace ();} V'vR(Wx "`vRHeCKN @]=40Yj~w Utility.log(nFileLength); (eN7s_ Y2H-D{a27 wcGK*sWG- return nFileLength; qkb'@f= } }47h0 i (`tRJWbdz &k}f"TX2 //保存下载信息(文件指针位置) I.<c{4K5 private void write_nPos() 4DA34m( { sXIYl% d try{ xnP!P2 output = new DataOutputStream(new FileOutputStream(tmpFile)); J+6zV m output.writeInt(nStartPos.length); )Z}AhX for(int i=0;i<nStartPos.length;i++) F!omkN { =*mT{q@ // output.writeLong(nPos); }Z!D?( output.writeLong(fileSplitterFetch.nStartPos); 22\!Z2@T/ output.writeLong(fileSplitterFetch.nEndPos); 2QfN.<[- } x$Dq0FX!%_ output.close(); kx"10Vw } K@D\5s|1| catch(IOException e){e.printStackTrace ();} $<}c[Nm catch(Exception e){e.printStackTrace ();} +#W94s~0V } +{J8,^z# ud1M-lY\U P15
H[<:Fz //读取保存的下载信息(文件指针位置) UtZ,q!sg private void read_nPos() cnv>&6a) { \/A.j|by,> try{ \o9 \ikR DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); }U_
'7_JT int nCount = input.readInt(); L4#pMc nStartPos = new long[nCount]; ZCiCZ)oc nEndPos = new long[nCount]; !rvEo =^ for(int i=0;i<nStartPos.length;i++) wX$:NOO { TJ|Jv8j<s nStartPos = input.readLong(); #(8|9 nEndPos = input.readLong(); .g*j]!_] } [K!9xM6 input.close(); :6^7l/p } 8[^'PIz catch(IOException e){e.printStackTrace ();} PNU(;&2< catch(Exception e){e.printStackTrace ();} y8Va>ul"U } P]E-Wp'p 8)i""OD@I Y+gY" private void processErrorCode(int nErrorCode) !3ggQG!e { 4w4B\Na>l System.err.println("Error Code : " + nErrorCode); gEA SYIQ } SC{m@ C@rGa7 tYS4"Nfb+ //停止文件下载 DSGcxM+ public void siteStop() s='+[*&& {
:|7#D,2 bStop = true; "
\$^j#o for(int i=0;i<nStartPos.length;i++) 3r\8v`^> fileSplitterFetch.splitterStop(); vdQoJWuB *6uccx7{ i;[y!U } YFKE>+ } '6KvB //负责部分文件的抓取 *Ak .KBg **FileSplitterFetch.java }\pI`;*O| */ ~MpikBf package NetFox; 4#U}bN D}-.< #cbgp;,M{I import java.io.*; 4
1_gak; import java.net.*; 6CJMQi,kn rS8a/d~;0 DE?v'7cmA public class FileSplitterFetch extends Thread { 4<s.|W` n|`3d~9$& \-<BUG]= String sURL; //File URL GK?ual1 long nStartPos; //File Snippet Start Position U"oNJ8&%| long nEndPos; //File Snippet End Position [oWkd_dK int nThreadID; //Thread's ID "LyD boolean bDownOver = false; //Downing is over MvVpp;bd boolean bStop = false; //Stop identical ;C]Ufk FileAccessI fileAccessI = null; //File Access interface Vej$|nF #-hO\
QdC _z5/&tm_H public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException LQ0/oYmNc { `:/'")+@v this.sURL = sURL; ^l &lwSRVt this.nStartPos = nStart; Sb.8d]DW this.nEndPos = nEnd; UA[`{rf nThreadID = id; sFU< PgV fileAccessI = new FileAccessI(sName,nStartPos);//定位 $KHm5*;nd } I[z:;4W}L^ !iXRt" ) Z\0Rw># public void run() -@TY8#O#- { g40Hj Y while(nStartPos < nEndPos && !bStop) Vns3859$8 { TS<d?: bMH~vR Aq i:h]x try{ 7Q
3!=b URL url = new URL(sURL); b0P3S!E HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %&ejO=r httpConnection.setRequestProperty("User-Agent","NetFox"); )m%uSSx# String sProperty = "bytes="+nStartPos+"-"; Daf|.5>(@ httpConnection.setRequestProperty("RANGE",sProperty); Z~'t'.=z Utility.log(sProperty); ZR.k' pP<8zTLn g` rr3jP InputStream input = httpConnection.getInputStream(); $ {yct //logResponseHead(httpConnection); w$2q00R> 1#vy# ' f}otIf
byte[] b = new byte[1024]; nep#L>LP$x int nRead; F%>$WN#2 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 6F\ 6,E { XcR=4q|7 nStartPos += fileAccessI.write(b,0,nRead); [-~pDkf: //if(nThreadID == 1) IUMv{2C // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); k
%I83,+ } Y2|i> 5/|< hA=uoe\ RQ+, 7Ir Utility.log("Thread " + nThreadID + " is over!"); EOPx4+o bDownOver = true; U)}]Z@I- //nPos = fileAccessI.write (b,0,nRead); LF|0lAr } '|}A/` catch(Exception e){e.printStackTrace ();} 7Sdo*z } 6v%yU3l } *&U~Io"U -jH|L{Iyq} +VwQ=[y] //打印回应的头信息 -cqE^qAdX public void logResponseHead(HttpURLConnection con) fQ+whGB { x}G:n[B7_V for(int i=1;;i++) ?kjQ_K { !gh8 Qs String header=con.getHeaderFieldKey(i); >%/x~UFc5 if(header!=null) =m.Nm -g //responseHeaders.put(header,httpConnection.getHeaderField(header)); ZL|aB886 Utility.log(header+" : "+con.getHeaderField(header)); *-VRkS-G else 5es t break; v,4{:y]p } 0U42QEG2 } {Jn0G; }'[>~&/" 4uF.kz-cg public void splitterStop() _^ hg7&dF { }[+uHR6L bStop = true; hSehJjEoM } <Iw{fj| ,dC.|P' ` '-wmY?ZFxy } (j}7|*. y3~=8!Tj?Q {FIzoR" /* sn"((BsO< **FileAccess.java i>M%)HN *//文件访问(定位,写) *g5bdQ:Av~ package NetFox; "i&)+dr- import java.io.*; MA
.;=T U>tR :) zx@!8Z public class FileAccessI implements Serializable{ G
;j1zs aH}/+Hu- //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 a4:GGzt RandomAccessFile oSavedFile; o30C\ long nPos; "FHJ_$! CR4O#f8\ v[L+PD
U public FileAccessI() throws IOException M CC4' { [>ghs_?dZ this("",0); #]h
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6&!4 public FileAccessI(String sName,long nPos) throws IOException 2 "&GH1 { Pe`mZCd^ oSavedFile = new RandomAccessFile(sName,"rw"); 8LV6E5Q this.nPos = nPos; @i ~ A7L0/ oSavedFile.seek(nPos); y._'o7 % } ?:r?K|Ku Y0(4]X \ey k^
<]:B public synchronized int write(byte[] b,int nStart,int nLen) eT
b!xb { X}( s(6 int n = -1; /8;m.J>bf try{ h$5[04.Q oSavedFile.write(b,nStart,nLen); |z)s9B;:#i n = nLen; )rEl{a } {aAd (~YZ catch(IOException e) izP)t { kZe<<iv e.printStackTrace (); W&5/1``u\ } dWz?`B{' ;6/WjUDw<| \2@J^O1, return n; oC`F1!SfOO } $0$sM/ % A8f.h5~9 tV!?Ol } xn*$Ty+ <,CrE5Pl JQ?`l)4 /* 'K4FS(q **SiteInfoBean.java <WP@q&^k\ */
m-t:'B package NetFox; qfsPX6] q-! H7o 4r(0+SO public class SiteInfoBean { +W4}&S (;#c[eKy H,} &=SCk private String sSiteURL; //Site's URL ^+x?@$rq private String sFilePath; //Saved File's Path >!Yuef
<P private String sFileName; //Saved File's Name %o8o~B|{.U private int nSplitter; //Count of Splited Downloading File +gd5& 8m")
)i- z>W:+W"o public SiteInfoBean() $z=%e#(!I {//nSplitter的缺省值为5 G(t:s5: //default value of nSplitter is 5 l@);U%\pS this("","","",5); ?4':~;~ } ,4'gj0 ! AwMD 6U{A6hH] public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) )9H5'Wh# { AYnPxiW| sSiteURL= sURL; r,;ca6>5H sFilePath = sPath; ) lUS' I sFileName = sName; 8n3]AOc'~- this.nSplitter = nSpiltter; 4<Vi`X7[F WJq>%<# !Ubm 586! } M5no4P< jz8u'y[n7 vh\i ^ public String getSSiteURL() Qxz[ { _r-LX" return sSiteURL; akvi^]x } |mtW) ?L }>9$" ZN8j})lE public void setSSiteURL(String value) y`RzcXblIZ { X9| Z?jJ sSiteURL = value; +@ChZ } ^$ Y9.IH" 1h@qcom9K_ wlNL;W@w public String getSFilePath() =7V4{|ESfy { ^
9+
Qxv return sFilePath; #}#m\=0 } O1v)*&NAI }<WJR Y6j htB7 j( public void setSFilePath(String value) ]0D- g2!|A { `%Fp'`ZM$8 sFilePath = value; c+l1l0BA } ;VLDXvGd 3A,N1OXG Lip#uuuXXN public String getSFileName() -`'|z+V { eV"%(<{ return sFileName; c~U0&V_`j } Onx6Fy]L _ &, A p8,=K< public void setSFileName(String value) 'bx}[
{ })OS2F sFileName = value; x/<ow4C } v:SHaUS 0#NMNZ
i6paNHi* public int getNSplitter() ,t 2CQ { P"NI> HM return nSplitter; ~k34#j:J65 } Vs5 &X+k <lB2Nv-, ]L~z9) public void setNSplitter(int nCount) 3.YH7rN
{ L9/'zhiZBx nSplitter = nCount; {APfSD_4 } w5z]=dN } d_
=K (}eR B<s+I# .Vt|;P} /* Mzg'$]N **Utility.java #:" ]-u^ */ ]MYbx)v) package NetFox; 0c>>:w20D "dCIg{j Sp[9vlo8 public class Utility { v
Z10Rb8 9]3l' q2
7Ac;y public Utility() :vi %7 { {W?!tD43" q[/g3D\G
8GxT! } Vc'p+e|( ;s3@(OnjZ //线程睡眠 08:K9zr public static void sleep(int nSecond) CH+%q+I { +]t9kr try{ 0(&uH0x Thread.sleep(nSecond); T\wOGaCW } Z2{$FN catch(Exception e) 3Dc^lfn { *Iw19o-I e.printStackTrace (); toF6 Z } crd|r." } ?Zv5iI fx 0 8>r
//日志 R GV{KL public static void log(String sMsg) _BG`!3U+ { *QW.#y>"j System.err.println(sMsg); 9^SrOW6~ } fo}@B&=4 tc;$7F ; WV}pE~ public static void log(int sMsg) >VjtKSN { m$Tt y[0 System.err.println(sMsg); ]Gl_L7u` } i_6 wD } p38s&\-kEN J!rZskd Rpcnpo /* dkEnc **TestMethod.java 7.5\LTM>9e */ uJ*|SSN~ package NetFox; nkk GJV! x2i`$iNhmP /9y'UKl7[ public class TestMethod { fv3)#>Dgp> 7Ph+Vs+h 9DXu*} public TestMethod() ;c~DBJg'| { ///xx/weblogic60b2_win.exe BcGQpv&x try{ Us9$,(3 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 8DrKq]& //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); A[d'*n[ SiteFileFetch fileFetch = new SiteFileFetch(bean); WY~}sE fileFetch.start(); S67T:ARS } [/t/694 catch(Exception e){e.printStackTrace ();} 6ud<B NOmSLIgt7 Q^V`%+ } }Lwj~{ ZsPBs4<p
HNoh B4vt public static void main(String[] args) o:Z*F0qm { M/sqOhg new TestMethod(); ELNA-ZKp } :S7yM8b` } *t |j+*c}
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