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/* 3Uo]>BG **SiteFileFetch.java ]wf|PU~nr */ ^srs$
w] package NetFox; Mdm0g import java.io.*; F(0Z ]#+ import java.net.*; GC?S];PL g< )72-h lPp6
pVr public class SiteFileFetch extends Thread { i*
gKtjx "aA_(Ydzj Xq%*#)M; SiteInfoBean siteInfoBean = null; //文件信息Bean O\JD, w long[] nStartPos; //开始位置
{9;eH'e long[] nEndPos; //结束位置 >]?Jrs FileSplitterFetch[] fileSplitterFetch; //子线程对象 U#"WrWj long nFileLength; //文件长度 z5ZKks boolean bFirst = true; //是否第一次取文件 ]umZJZ#Y boolean bStop = false; //停止标志 *o2#eI File tmpFile; //文件下载的临时信息 F,.Q|.nN DataOutputStream output; //输出到文件的输出流 *I/A,#4r w>vmF cp //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) fO+UHSC public SiteFileFetch(SiteInfoBean bean) throws IOException 3FY_A(+ { #nbn K siteInfoBean = bean;
,5kvn //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); xv&S[=Dt tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); oB}K[3uB:t if(tmpFile.exists ()) LV\ieM { Un\Ubqi0 bFirst = false; D{W
SKn read_nPos(); /Mx.:.A&$ } @Q3, bj else 1W0.Ufl) { sSy$(% nStartPos = new long[bean.getNSplitter()]; >\&= [C nEndPos = new long[bean.getNSplitter()]; NkoofhZ } -[<vYxX:h: QSv^l-< lT3|D?sF 5Abz5-^KH } l\Cu1r-z a>?p.!BM YPG,9iZ&f public void run() <oZ(n g@X { A$N+9n\ //获得文件长度 IuDT=A //分割文件 &p)@8HY //实例FileSplitterFetch W1;=J^<&1 //启动FileSplitterFetch线程 C|9[Al //等待子线程返回 =!YP$hf Y try{ pOX$4$VR< if(bFirst) eL_^: - { Jxf}b}^T nFileLength = getFileSize(); %B0w~[!4} if(nFileLength == -1) 1O23"o5= { s9G)Bd 8 System.err.println("File Length is not known!"); oFb\TiLu } &b!vWX1N else if(nFileLength == -2) L2<+#O# { Mc!2mE%47m System.err.println("File is not access!"); ),MU+*` } QYH."7X
> else e"lD`*U8R { (;C$gnr.C for(int i=0;i<nStartPos.length;i++) 2c"/QT { A0UV+ -PP nStartPos = (long)(i*(nFileLength/nStartPos.length)); 5d%_Wb' } 8F\~Wz 7K for(int i=0;i<nEndPos.length-1;i++) m'3OGvd { [#7D~Lx/ nEndPos = nStartPos[i+1]; F68},N>vr@ } ruzMag) nEndPos[nEndPos.length-1] = nFileLength; "-28[a3q } T\)dt?Tv#\ } 5"$e=y/ ~37R0`C ypgliq( //启动子线程 IN<:P fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; >G<4Ro" for(int i=0;i<nStartPos.length;i++) f_~}X#._ { =obt"K%n fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), PIgGXNo siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3,%nkW nStartPos,nEndPos,i); 9)jo7,VM Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @>+^W& fileSplitterFetch.start(); ,n^TN{# } YfV"_G.ad| // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), sN"p5p siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;tXB46 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ]!]`~ Z/ nEndPos = " + nFileLength); q|R+x7x // fileSplitterFetch[nPos.length-1].start(); ^8b~ZX $xLEA\s e',hC0&S //等待子线程结束 4u@yJ?U //int count = 0; (6e!09P& //是否结束while循环 =VCi8jDkP boolean breakWhile = false; /]pX8
d mgk64}K [n +[>yO _} while(!bStop) jG
=(w4+ { A1mYkG)l write_nPos(); f&=K]:WDe Utility.sleep(500); <m~T>Ql1 breakWhile = true; MP6 \r @=02 x&QNP for(int i=0;i<nStartPos.length;i++) /;zZnF\e { <+ -V5O^ if(!fileSplitterFetch.bDownOver) 7^n,Tig { &*X3ch breakWhile = false; (PRaiE break; s4!|v`+$M } nrxjN(9V%+ } cZPbD;e: if(breakWhile) cjCE3V9X break; zG&WWc`K ztRWIkI
q rd|@*^k //count++; bv .EM //if(count>4) Rh!L'?C // siteStop(); emGV]A%nss } ;:v]NZtc $ iX^p4v oc!biE`u System.err.println("文件下载结束!"); #N<s^KYG- } }T?i%l catch(Exception e){e.printStackTrace ();} ;m-6.AV } Ej;Vr~Wi ##SLwrg *5ka.=Qs //获得文件长度 @C!JtgO% public long getFileSize() }`+O$0A { dL1~]Z
y
int nFileLength = -1; _Ym&UY.u# try{ *O"%tp6 URL url = new URL(siteInfoBean.getSSiteURL()); ^G]KE8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); M>`?m
L httpConnection.setRequestProperty("User-Agent","NetFox"); DR.3
J`?K nEjo, Z\ "Kd int responseCode=httpConnection.getResponseCode(); 3MS3O.0]/ if(responseCode>=400) j<.
<S { { 7AZ5%o processErrorCode(responseCode); 6Y0/i,d* return -2; //-2 represent access is error &xPOp$Sx~ } `XQx$I O[i2A( Y?"v2~;3 String sHeader; |[lxV&SD. KUl
Zk^a , V0iMq for(int i=1;;i++) $ioaunQKP { TMnT#ypf<5 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); umq$4}T'$ //Utility.log(in.readLine()); z{ Zimr sHeader=httpConnection.getHeaderFieldKey(i); !?tu!
M<1? if(sHeader!=null) $i1>?pb3 { Hl4vLx@ if(sHeader.equals("Content-Length")) &F@tmM~ { '=@-aVp nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); _*OaiEL+: break; *@b~f&Lx6 } "6|'&6& } 7v4-hfN else Jgi{7J break; ex;Yn{4 } s+OvS9et_ } NKIk d catch(IOException e){e.printStackTrace ();} .HH,l catch(Exception e){e.printStackTrace ();} S4@117z5 ~|$) 1 \kua9bK Utility.log(nFileLength); $S"zxEJJ Y LN,$P 4nVO.Ud0$X return nFileLength; (_s!,QUe } gn;nS{A W2X+NacD @n~ND). //保存下载信息(文件指针位置) r&j+; JM5 private void write_nPos() iG;d0>Sp { 9I^H)~S try{ S%a}ip& output = new DataOutputStream(new FileOutputStream(tmpFile)); 9v5.4a} output.writeInt(nStartPos.length); n]6w)wE( for(int i=0;i<nStartPos.length;i++) gvwCoCbb { N8/Au=De_ // output.writeLong(nPos); Ed ?Yk* 4 output.writeLong(fileSplitterFetch.nStartPos); |?pYJkrYO output.writeLong(fileSplitterFetch.nEndPos); <7RkM } l")o!N? output.close(); Nt,]00S\w } Q>+_W2~] catch(IOException e){e.printStackTrace ();} :">~(Rd ZH catch(Exception e){e.printStackTrace ();} *I;Mp } s>"WQ|;6 <)0LwkFtB 4^jZv$l5 //读取保存的下载信息(文件指针位置) plz=G}Y private void read_nPos() XQJV.SVS { }gi`?58J6 try{ @Z1?t%1 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ua. 6?W) int nCount = input.readInt(); H~1?MAX nStartPos = new long[nCount]; ./5MsHfbxt nEndPos = new long[nCount]; sB*h`vs0T for(int i=0;i<nStartPos.length;i++) JqH.QnKcv { u0$5Fd&X nStartPos = input.readLong(); Hf E;$ nEndPos = input.readLong(); ;*85'WcS } S+E3;' H input.close(); hGaYQgGq } (vYf?+Kb catch(IOException e){e.printStackTrace ();} k?@W/}Iv9 catch(Exception e){e.printStackTrace ();} a}+_Yo(Q } aX%g+6t2 :;gwdZ EZNB`gO private void processErrorCode(int nErrorCode) 8)Bn?6. { s#8{:ko System.err.println("Error Code : " + nErrorCode); s\K-(`j} } Snvj9Nr "MVN/Gl DQHGq_unP //停止文件下载 T=)L5 Vuq< public void siteStop() %@,:RA\pm { >+W?!9[p:2 bStop = true; q=i,'.nS for(int i=0;i<nStartPos.length;i++) h11bK'TIv fileSplitterFetch.splitterStop(); f<xt3 @o-evH;G ~NJL S- } /(}l[jf } kQ:>j.^e //负责部分文件的抓取 E<.{
v\ **FileSplitterFetch.java J jL0/& */
61 HqBa package NetFox; =F;^^VX tZ6v@W !&<Wc^PG import java.io.*; F^[Rwzv>c import java.net.*; Ub-k<]yZ ,jdKcWy' bgx5{!A
public class FileSplitterFetch extends Thread { _M[[o5{ (>/Dw|,m r;s3(@[,@ String sURL; //File URL )Z`viT long nStartPos; //File Snippet Start Position .~/;v~bL long nEndPos; //File Snippet End Position }N=zn7W int nThreadID; //Thread's ID I5AjEp boolean bDownOver = false; //Downing is over jq]\oY8y boolean bStop = false; //Stop identical ]{ l
O FileAccessI fileAccessI = null; //File Access interface ;Q%19f3,6 ckkM)|kK pRfHbPV? public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Wn)A/Z ^r { .m
% x-i this.sURL = sURL; N_~Wu this.nStartPos = nStart; q.Aw!]:! this.nEndPos = nEnd; Nl>b'G96 nThreadID = id; 7B> cmi fileAccessI = new FileAccessI(sName,nStartPos);//定位 pLFL6\{g } @;-Un/'C;7 {s^n|b} So0,) public void run() W!Os ci { oI"Fpo while(nStartPos < nEndPos && !bStop) SX<>6vH& { N,'qMoNf (]uoN4 ;{#M try{ /t2<OU9 URL url = new URL(sURL); 4rCqN.J HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); e2H'uMy;& httpConnection.setRequestProperty("User-Agent","NetFox"); XT;IEZQZ String sProperty = "bytes="+nStartPos+"-"; 7UnO/K7oB. httpConnection.setRequestProperty("RANGE",sProperty); v?iH}7zb%Q Utility.log(sProperty); CX(yrP6; `E%d$ x[<#mt InputStream input = httpConnection.getInputStream(); ^.aEKr //logResponseHead(httpConnection); Ib<+m%Ac <UHf7:0V kT3;%D^ byte[] b = new byte[1024]; iY`7\/H!L int nRead; =(uy':Dbn* while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 1 jd=R7 { 9U%}"uE nStartPos += fileAccessI.write(b,0,nRead); BJ;c F"Kp //if(nThreadID == 1) |zegnq~ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !)1Zp* } >@\?\!Go e(5Px!B ^C#bW<T Utility.log("Thread " + nThreadID + " is over!"); dEl3?~ bDownOver = true; fpC@3 itI //nPos = fileAccessI.write (b,0,nRead); v8M#%QoA } m(Xr5hw:6 catch(Exception e){e.printStackTrace ();} &_TjRj" } Q#AHEm{9;s } M(gWd8?# l3
Bc
g iK23`@&%_ //打印回应的头信息 Lr]Hvd public void logResponseHead(HttpURLConnection con) Jywz27j { Ho*RLVI0U for(int i=1;;i++) Aba%Gh { \{^yB4F_Z String header=con.getHeaderFieldKey(i); ?DTP-#5Ba if(header!=null) h1d0{ //responseHeaders.put(header,httpConnection.getHeaderField(header)); bao5^t} Utility.log(header+" : "+con.getHeaderField(header)); 23?0'AU else PW\FcT break; V)?g4M3} } i(#c
Yb } rm;"98~zJ? , X+(wp ed2&9E>9b public void splitterStop() x@l~*6!K { YZ+g<HXB bStop = true; $CV'p/^En } V&nJT~k HBYpjxh ho=]'MS| } {:j!@w 3 d|HM f@X*Tlx^| /* qOanu **FileAccess.java 9`VF
[*
9 *//文件访问(定位,写) VZ!$'?? package NetFox; u $^`hzfI import java.io.*; =5#Jsn?U ?Gu>!7 *g}&&$b0 public class FileAccessI implements Serializable{ $+N^ s^ S :|*wB //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 U6 R4UK RandomAccessFile oSavedFile; L-T Ve long nPos; 'Z9F0l"Nr Y3&ecEE F'Vl\qPt public FileAccessI() throws IOException sM_e_e { oVgNG!/c0 this("",0); }#
^PbM } y=`(`|YW}` 2$UR"P @=1``z# public FileAccessI(String sName,long nPos) throws IOException }Elce} { cW%O- oSavedFile = new RandomAccessFile(sName,"rw"); jg/<"/E this.nPos = nPos; .k(_j.v oSavedFile.seek(nPos); md
s\~l73 } `v
er "s; {bEEQCweNJ |
Ylk`< public synchronized int write(byte[] b,int nStart,int nLen) ZJm^znpw6 { "xI[4~'`: int n = -1; ,6L>f.V^(U try{ |g!#
\ oSavedFile.write(b,nStart,nLen); ~(S4/d5 n = nLen; G-<~I#k } aC`
c^'5 catch(IOException e) vRs5-T { m$g^On e.printStackTrace (); C_)>VPD } iB-s*b<`~ K>eG5tt #+\G-
=- return n; 9mm(?O~'p } `7ZJB$7D|* '& :"/4@) gV;GC{pY } '+wTrW m~j tsD^8~
t|h 55\mQ|.Jn /* .@V>p6MV **SiteInfoBean.java B:.rp.1 */ aQFHB! package NetFox; p-k qX -GjJrYOU S\(_"xJPp public class SiteInfoBean { N|}`p" aoS1Yt'@ r0>T7yPAK private String sSiteURL; //Site's URL 3\7$)p+c private String sFilePath; //Saved File's Path qiN'Tuw9 private String sFileName; //Saved File's Name z(qz(`eGC& private int nSplitter; //Count of Splited Downloading File ?CDq^)T[ q4oZJ -` ,,gYU_V public SiteInfoBean() !NjE5USi {//nSplitter的缺省值为5 Y}Uw7\e //default value of nSplitter is 5 x
,W+:l9~s this("","","",5); sn%fE } kF .b) 70eN]OY :Ib\v88WIv public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) d\M
!o*U { jK53-tF~I sSiteURL= sURL; ;*p}~#2 sFilePath = sPath; Q{60^vg sFileName = sName; 7j8_O@_ this.nSplitter = nSpiltter; ;q2T*4NN 6~LpBlb Ok!{2$P8U9 } &@+;]t )3 @T"385> public String getSSiteURL() bv "S( { DP_ \%(A return sSiteURL; jYv
!} } vCM'nkXY 1YxI q565 /_\4(vvf public void setSSiteURL(String value) /Y:Zqk3 { HFOp4 sSiteURL = value; ^Tx1y[hw$ } Z/x~:u_ bkTj
Q ojri~erJE? public String getSFilePath() lRb)Tz6SE { |a+8-@-Tj return sFilePath; 2 6A#X } R#>E{[9 "5Mo%cUp z~qQ@u| public void setSFilePath(String value) Qw:j2g2H7 { KMV!Hqkk sFilePath = value; O9Aooe4W= } \=)h6AG r+Y1m\ x{E[qH_1Fm public String getSFileName() x/~M=][tN { 3-'|hb return sFileName; rGs> {-T3 } 7+"X^$ U N/.T
DVd/OU
public void setSFileName(String value) X9 R-GT { ~$B,K] sFileName = value; Iu8=[F> } P1<;:!8' .JE7vPv%! M%/D:0 public int getNSplitter() Ts\7)6|F { 6C:Lq%} return nSplitter; >qCT#TY } 0Ko,S(M_ TR |; /yJ l-&f81W public void setNSplitter(int nCount) -nW-I\d% { 7_RU*U^ nSplitter = nCount; :.<&Y=^ } (_* a4xGF } ag6S"IXh 7j+.H/2 t%)L8%Jr /* vzL>ZBeZ **Utility.java kQ + */ ]zO]*d=m package NetFox; g!$
"CX%8 bpkn[K"( 99 ["I: public class Utility { ;$Y?j8g 04s N4C f5N~K> public Utility() f: Rh9 { *M{1RMc hRP0Djc ,#crtX } A)xI.Q6 .+y#7-#6 //线程睡眠 zMa`olTZ public static void sleep(int nSecond) `F)Iv:;y, { [f'7/w+ try{ =Zj9F1E[i Thread.sleep(nSecond); wdg[pt
/> } 1||e!W catch(Exception e) V1ug.Jv^ { @wo9;DW` e.printStackTrace (); &c]x;#-y } ;j$84o{ } *q^'%' !MbRI //日志 $z<CkMP!U7 public static void log(String sMsg) og>f1NwS[ { bHp|>g System.err.println(sMsg); 9DIG K\ } L8V'mUyD CTwP{[%Pk KT3[{lr public static void log(int sMsg) `]%{0 Rx { ^3el-dZ System.err.println(sMsg); O&}0 7( } As"'KR } +/ #J]v- cJt#8P
rTi.k /* ^#G>P0mG% **TestMethod.java (vY10W{ */ L9x,G! package NetFox; `q F:rQ lU\|F5O@# qB8<(vBP+ public class TestMethod { %hXa5}JL a(m#GES j#-74{Y$
J public TestMethod() |_O1V{Q= { ///xx/weblogic60b2_win.exe n44j]+P try{ C ZJW`c/ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 5f1yszd //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); zP5H TEz SiteFileFetch fileFetch = new SiteFileFetch(bean); rIu>JyC"p fileFetch.start(); \\[P^ tsF } Ar|_UV>Zf catch(Exception e){e.printStackTrace ();} Wjj'yqBO^ }b1P!xb!A $Q?UyEi } Lg'z%pi c0tv!PSw uz%rWN`{ public static void main(String[] args) &)rmv { 3 iY`kf new TestMethod(); M,l
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