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/* =:CGl **SiteFileFetch.java '0])7jq */ +7U
A%q package NetFox; 'NG^HLD/ import java.io.*; ( 7rz: import java.net.*; m<,y-bQ*( z1{E:~f a6#{2q public class SiteFileFetch extends Thread { mCC:}n"# "2vNkO## U 3wsWSO SiteInfoBean siteInfoBean = null; //文件信息Bean B4\:2hBq long[] nStartPos; //开始位置 ]|((b/L3 long[] nEndPos; //结束位置 [i<$ZP FileSplitterFetch[] fileSplitterFetch; //子线程对象 8a":[Q[ long nFileLength; //文件长度 f2R+5`$ boolean bFirst = true; //是否第一次取文件 ;QvvU[eb boolean bStop = false; //停止标志 laD.or File tmpFile; //文件下载的临时信息 #LrCx"_& DataOutputStream output; //输出到文件的输出流 %(dV|,|v n}ZBU5_ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Y_Z
&p#Q! public SiteFileFetch(SiteInfoBean bean) throws IOException P&-D0T_ { 3u"J4%zg|L siteInfoBean = bean; R.T?ZF //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ki*79d"$ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); QvK]<HEr if(tmpFile.exists ()) DS[l,x { )=,9`+Zta bFirst = false; ,,wyydG read_nPos(); N#-kk3!Z; } $&n240( else c^dl+-{Mc { =A6u= nStartPos = new long[bean.getNSplitter()]; w|n?m nEndPos = new long[bean.getNSplitter()]; !Wdt:MUI8 } ]X"i~$T1 S [6/%V>EM 'wT./&Z B4*X0x } gR_b~^ {%+3D,$) DoCQFSL public void run() dZ]\1""#H { ^$&"<
//获得文件长度 v @I^:I //分割文件 1TD&&EC //实例FileSplitterFetch i-"h"nF" //启动FileSplitterFetch线程 <=y58O]x //等待子线程返回 Z>MJ0J76] try{
5Ky9P z if(bFirst) e G*s1uQl { EDa08+Y nFileLength = getFileSize(); ]Xkc0E1 if(nFileLength == -1) (Aov}I+ { G7kFo6Cb System.err.println("File Length is not known!"); %;B(_ht<-w } vCU&yXGl else if(nFileLength == -2) 1 [~| { 1vR#FE? System.err.println("File is not access!"); JG+g88 } Z+"E* else "|l
oSf@ { ).O2_<&?F for(int i=0;i<nStartPos.length;i++) zx]M/=7,V# { ezq
q@t9 nStartPos = (long)(i*(nFileLength/nStartPos.length)); N:gstp } )/N Xh' for(int i=0;i<nEndPos.length-1;i++) xdTzG4 { M'!!EQo nEndPos = nStartPos[i+1]; hcp'+: } ,n,7.m.D nEndPos[nEndPos.length-1] = nFileLength; ;uWIl } <x%my4M } ~V$5 m j H@&"M% (m =u;L"o //启动子线程 $Bwvw)(% fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; tB(X`A.| for(int i=0;i<nStartPos.length;i++) EBn:[2 { n4d(` fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), dE9aE# o siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \8>N<B) nStartPos,nEndPos,i); BKP!+V/ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?[>BssW fileSplitterFetch.start(); )*L?PT } MT#[ -M\ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1
FIiX siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;;"c+ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", T?}=k{C] nEndPos = " + nFileLength); jQwg)E+o; // fileSplitterFetch[nPos.length-1].start(); J`D< ;uo|4?E:\( cF<DUr)Ve //等待子线程结束 O6/=/-?N=c //int count = 0; k3|9U'r!c //是否结束while循环 T.Y4L boolean breakWhile = false; zZ"')+7q&% wCE fR!i N@`9 ~JS while(!bStop) v_F?x! { {~p %\ write_nPos(); x?k |i}Q Utility.sleep(500); bA9dbe breakWhile = true; c$Nl-?W 8w@jUGsc ; >hPHx for(int i=0;i<nStartPos.length;i++) >a]
s { H-y-7PW*~ if(!fileSplitterFetch.bDownOver) I:2jwAl { Q ]koj!mMl breakWhile = false; O7_NXfh| break; K]azUK7 } ^J=txsx } sAAIyPJts if(breakWhile) 1~iBzPU2 break; /SM#hwFxJ& "lj:bxM2C =81Xt1, //count++; T=KrT7 //if(count>4) I3=Sc^zz&V // siteStop(); RoXOGVo } r3lr`s` Z"8cGN' 2OOj8JS System.err.println("文件下载结束!"); V\lF:3C } mp$II?hZ* catch(Exception e){e.printStackTrace ();} Rn^N+3o'M } #+Gs{i Xr t$ ~:C ;."{0gq //获得文件长度 ,3TD $2};. public long getFileSize() kR|DzB7 { '`VO@a int nFileLength = -1; ;iI2K/ 3 try{ /|^^v DL URL url = new URL(siteInfoBean.getSSiteURL()); Jx[e{o)o HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )uJ`E8>- httpConnection.setRequestProperty("User-Agent","NetFox"); WQ`P^5e 20xGj?M x-k/rZ int responseCode=httpConnection.getResponseCode(); <5L` d} if(responseCode>=400) @)B5^[4(; { ^rb7`s#G processErrorCode(responseCode); R_&V.\e_ return -2; //-2 represent access is error
d~s-;T } \evgDZf ;Cpm3at <^$b1<@ String sHeader; GdwHm =7Gi4X% fH{$LjH( for(int i=1;;i++) xg!\C@$ { VH*(>^OfF //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5 `mVe0uI //Utility.log(in.readLine()); i;
uM!d} sHeader=httpConnection.getHeaderFieldKey(i); ;Awzm )Q if(sHeader!=null) ;{u#~d} { \}(-9dr if(sHeader.equals("Content-Length")) )u:8Pv { 6q7Y`%j nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); iFT3fP'> 5 break; 4y)1*V U: } jh!IOtf } nr%^:u else ,$*klod break; o{,(`o.1O } E 4(muhY } {_D'\i(Y_ catch(IOException e){e.printStackTrace ();} BbhdGFG1 catch(Exception e){e.printStackTrace ();} 6iS+3+ gU$3Y#R Z.19v>-c Utility.log(nFileLength); SaScP rV{e[fGd N1+]3kt ~ return nFileLength; N1t:i? q& } je0 ?iovY pfIvBU? Q 7?4GxMj //保存下载信息(文件指针位置) 0;`PHNBq private void write_nPos() Fsdn2{g8U { !T1i_ try{ $:P~21, output = new DataOutputStream(new FileOutputStream(tmpFile)); cA^7}}?e output.writeInt(nStartPos.length); XBBRB<l) for(int i=0;i<nStartPos.length;i++) TMs\#
{ [r~lO@ // output.writeLong(nPos); L3Iz]D3s output.writeLong(fileSplitterFetch.nStartPos); {=Y&q~:8v output.writeLong(fileSplitterFetch.nEndPos); CF4y$aC# } 7m$/.\5 output.close(); MYm6C;o$ } jP]'gQ!-w catch(IOException e){e.printStackTrace ();} 8BdeqgU/_ catch(Exception e){e.printStackTrace ();} kF7Al]IgT } 27gm_* B) iJH -4a&R=%p //读取保存的下载信息(文件指针位置) YRXe j private void read_nPos() tt91)^GdYa { od|.E$B try{ vDL/PXNC DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); sRG3`>1 int nCount = input.readInt(); smNr%}_g nStartPos = new long[nCount]; 6C5qW8q]u3 nEndPos = new long[nCount]; %?y`_~G for(int i=0;i<nStartPos.length;i++) [!$>:_Vq/ { c}cboe2 nStartPos = input.readLong(); /267Q;d
C) nEndPos = input.readLong(); EORAx } w, wt<@} input.close(); WNi<|A#T{ } #pK) catch(IOException e){e.printStackTrace ();} Sn,z$-;h; catch(Exception e){e.printStackTrace ();} Rx<F^J } NoIdO/vy" P$yJA7]j;% e4P.G4 private void processErrorCode(int nErrorCode) gA*zFhGVS7 { kDQXPp System.err.println("Error Code : " + nErrorCode); 2y,wN"qH* } ^6n]@4P cPYQ<Y= lUz@Em //停止文件下载 bvKi0- public void siteStop() YWdvL3Bgk, { _X/`4 G bStop = true; )$i3j
1[; for(int i=0;i<nStartPos.length;i++) D.}b<kDD fileSplitterFetch.splitterStop(); lX7^LB '{~ej: v|z1nD!?] } ,%^0 4sl } )}v2Z3: //负责部分文件的抓取 + u+fEg/A **FileSplitterFetch.java ^~od*: */ bHNaaif}P package NetFox; [8n4lE[)" UYUdIIoL |@F<ajlV import java.io.*; Y_B(R import java.net.*; j.*}W4`Q_ [d}1Cq=_ \~>#<@h public class FileSplitterFetch extends Thread { UK/k?0 C09@2M' 5=\b+<pE String sURL; //File URL R!ij CF\ long nStartPos; //File Snippet Start Position |V5H(2/nk long nEndPos; //File Snippet End Position aDESO5 int nThreadID; //Thread's ID O!jCQ{ T boolean bDownOver = false; //Downing is over :n4x}% boolean bStop = false; //Stop identical FE.:h'^h FileAccessI fileAccessI = null; //File Access interface K9iR>put (A_9;uL^_ >E# 4mm public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException uNjy&I: { Q]C1m<x this.sURL = sURL; ijfT!W this.nStartPos = nStart; K[H$qJmPX this.nEndPos = nEnd; Hl51R"8o nThreadID = id; R !HL+ fileAccessI = new FileAccessI(sName,nStartPos);//定位 `7`iCYiTy } d!cx%[ li?Gb1 W=/B[@3' public void run() S6uBk"V! { lK0coj1+ while(nStartPos < nEndPos && !bStop) 9b>a<Z
{ (msJ:SG .W\Fa2}%av IN"qJ3<k try{ E*zk?G| URL url = new URL(sURL); Z3Y%VHB_F( HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); P_}$|zj7 httpConnection.setRequestProperty("User-Agent","NetFox"); wSGUNP9 String sProperty = "bytes="+nStartPos+"-"; 9j/B3CjW httpConnection.setRequestProperty("RANGE",sProperty); (Y%}N(Jg Utility.log(sProperty); EW)]75o{QF 6aL`^^ dJk.J9Z InputStream input = httpConnection.getInputStream(); hk(^?Fp //logResponseHead(httpConnection); :Fh*4
&Z LF8B5<[O ugz1R+f_4{ byte[] b = new byte[1024]; vhKD_}}aP int nRead; 3't?%$'5 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) IlY,V { TX;|g1K nStartPos += fileAccessI.write(b,0,nRead); h4U .wk //if(nThreadID == 1) hM-qC|! // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); v?}/WKe+0 } MEE]6nU Mppb34y 'yl`0,3wV Utility.log("Thread " + nThreadID + " is over!"); -H{{ bDownOver = true; Kgcg:r: //nPos = fileAccessI.write (b,0,nRead); `C3F?Lch } ~be&T:7. catch(Exception e){e.printStackTrace ();} `#~@f!'; } aDs[\' } >PTq5pk =d9%ce ~{J.br` //打印回应的头信息 ?U&onGy public void logResponseHead(HttpURLConnection con) mY-r: { l`d=sOB^ for(int i=1;;i++) umc!KOkL { 4JucNGv String header=con.getHeaderFieldKey(i); /%~`B[4F if(header!=null) FYzl- 7!Y //responseHeaders.put(header,httpConnection.getHeaderField(header)); %
nR:Rc! Utility.log(header+" : "+con.getHeaderField(header)); 7kO
1d{u6b else K-K+%U break; %k"-rmW } I3$v-OiL } 7l?-2I'c &iTsuA/7 rkVZP!7! public void splitterStop() F4*f_lP { +K&ze:-Z bStop = true; hsi#J^n{ } =fm/l-P@ Mv_4*xVc 0&<{o!>k } @qeI4io-n !5ppA cdk;HK_Ve. /* qr:[y **FileAccess.java lgU7jn *//文件访问(定位,写) H}A67J9x package NetFox; Oa{M9d,l import java.io.*; ]^dXB0 I\":L =r`>tWs public class FileAccessI implements Serializable{ WFTTBUoH <[(xGrEZV //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 )U5AnL RandomAccessFile oSavedFile; 9n1O@~ long nPos; V<1dA\I" L,n'G% %ePInpb public FileAccessI() throws IOException Ta~Ei=d^ { bjbm"~ this("",0); w}+jfO9 } 5'6Oan7dL: +YXyfTa *PD7H9m public FileAccessI(String sName,long nPos) throws IOException gmt`_Dpm$ { Tk)y*y oSavedFile = new RandomAccessFile(sName,"rw"); pX"f " this.nPos = nPos; s %/3X\_ oSavedFile.seek(nPos); +hi!=^b] } hCM+=]z" @N34 Q-l ho 4~-xmN public synchronized int write(byte[] b,int nStart,int nLen) . F_pP2A { ZfoI7<?33 int n = -1; &!_>J0 try{ (|<}q-wO oSavedFile.write(b,nStart,nLen); (;\JCeGA n = nLen; CPAizS } fE,\1LK4 catch(IOException e) p%8y!^g { / F9BbG{ e.printStackTrace (); V4iN2 } 0jG8Gmh! 4;y*y tY* J&2cf# return n; p v%`aQ]o{ } IOomBy: wm_xH_{F K '7M\:zy } 5V8WSnO >E6w,Ab vT)FLhH6* /* K<6)SL4 **SiteInfoBean.java 0.qnbDw_ */ [s"xOP9R package NetFox; AfB,`l`k s&TPG0W AKu]c- public class SiteInfoBean { Igrr"NuDZ 2XNO*zbve h:[%' htz private String sSiteURL; //Site's URL /5pVzv+rm private String sFilePath; //Saved File's Path wa2?%y_G private String sFileName; //Saved File's Name 7\H jQ7__ private int nSplitter; //Count of Splited Downloading File :;HJ3V; t,Ss3 LB$#]
Z public SiteInfoBean()
]?M3X_Mq {//nSplitter的缺省值为5 N6EG!* //default value of nSplitter is 5 }}G`yfs}r this("","","",5); c>mTd{Abi } v4OroG=^ #-W
a3P i_Ol vuy~ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) b9X"p*'p { b8@?fC+tm sSiteURL= sURL; gwO]U=Y sFilePath = sPath; +~Wg@ sFileName = sName; m - ]E| this.nSplitter = nSpiltter; $MhfGMk!' O4t0 VL$ 7wKT:~~oS3 } VN]70LFz*i > &tmdE '(fQtQ% public String getSSiteURL() rrz^LD { @kBy|5 return sSiteURL; ~)vq0]MRg } oR[-F+__ yI$KBx/]n WstX>+?' public void setSSiteURL(String value) 3:qn\"Hj { pV[SY6/ sSiteURL = value; _D.4=2@|l8 } <aSjK# 1K\zamBg upi\pXv public String getSFilePath() I' [gGK4F { p.)IdbC`B return sFilePath; [+;>u| } =/kwUjC? S3Dmc\f h\-3Y U public void setSFilePath(String value) ?vh1 >1D { %^pm~ck! sFilePath = value;
|pgrR7G' } vX30Ijm l\tg.O~ yVfF
*nG public String getSFileName() vb.}SG> { }-/oL+j return sFileName; 0(qtn9;=2 } H'a6]
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}o[NB public void setSFileName(String value) "*8>` 6 E { Q{=DLm` sFileName = value; 03Uj0.Z|7 } 4p<c|(f# )kIZmQ|f1 Fa0Fl}L public int getNSplitter() uxx(WS { Xx,Rah)X3 return nSplitter; s+0n0C } T|k_$LH pgd9_'[5 {Ri6975 public void setNSplitter(int nCount) 2=IZD `{! { s.$:.*k nSplitter = nCount; 1$_|h@ } cB0"vbdO } -J":'xCP! Lrjp rczwxWK /* \%}w7J; **Utility.java A= 96N@m6 */ +k;][VC[O package NetFox; zD@RW<M ,8[R0wsBaz ?Gx-q+H public class Utility { *JArR1J O-(gkE 7hlzuZob+y public Utility() K?@x'q1 { O^Y@&S RrQ R+# g_"1@p +!/pzoWpE } BD2Gv)?g e'X"uH Xt. //线程睡眠 "Wg5eML0 public static void sleep(int nSecond) {W'{A { NCp]!=uM; try{ (j&7`9<5 Thread.sleep(nSecond); f?lnBvT|b } nmw#4yHYy: catch(Exception e) SoHw9FtS { J3 xi5S e.printStackTrace (); ra
F+Bt` } ^!6T,7B B } )O ,+'w? yRWZ/,9x //日志 1}q(Pn2 public static void log(String sMsg) iw^"?:'% { 'tDVSj System.err.println(sMsg); xzw2~(lo } ZMEYF!jN ,8.zbr I:UN2`*# public static void log(int sMsg) \Icd>>)* { :!w;Y;L:+ System.err.println(sMsg); H,(4a2zx } ~p { fl? } Mk/ZEy q^ U]Fnf?( Va$JfWef /* s+9b. **TestMethod.java 0Wb3M"#9< */ YK V"bI
package NetFox; yK>s]65& >mMmc!u>G V9;O1 public class TestMethod { +7Qj%x\ <3 I0$?xL B/K{sI public TestMethod() Y'?{yx{ { ///xx/weblogic60b2_win.exe 7#sb},J{ try{ `G2!{3UD SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); gmCB4MO //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); "|GX%>/ SiteFileFetch fileFetch = new SiteFileFetch(bean); r5Xi2! fileFetch.start(); S~ZRqL7ZO } {^@qfkZz^ catch(Exception e){e.printStackTrace ();} $yZ(ws L[Y|K%;~ d[&Ah~, } !}J19]\ 84c[ Z +pjU4>) public static void main(String[] args) jO5Wemqf { h5ZxxtGU new TestMethod(); zfA"xD } nE"0?VNW$ } J
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