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/* 4d#W[ **SiteFileFetch.java 9M6&+1XE */ vc<8ApK3V package NetFox; t9kgACo/M import java.io.*; L\UYt\ks import java.net.*; LakP'P6`E lxeolDl v{9eEk1 public class SiteFileFetch extends Thread { })" : F <MYD`,$yu h(9K7 SiteInfoBean siteInfoBean = null; //文件信息Bean ?^hC|IR$ long[] nStartPos; //开始位置 ;tHF$1!J long[] nEndPos; //结束位置 tP\Utl-0 FileSplitterFetch[] fileSplitterFetch; //子线程对象 5o,82Kti long nFileLength; //文件长度 sG3%~ boolean bFirst = true; //是否第一次取文件 {MHr]A}X\ boolean bStop = false; //停止标志 @M1U)JoQ File tmpFile; //文件下载的临时信息 f-Sb:O!V DataOutputStream output; //输出到文件的输出流 5b&'gd^d 30<^0J.1 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) bV"0}|A~K public SiteFileFetch(SiteInfoBean bean) throws IOException YRK4l\_` { =hA/; siteInfoBean = bean; oyUf/Sl //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 6|zA,-= tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); nPKj%g3h if(tmpFile.exists ()) z:w7e0 { "Kqe4$ bFirst = false; NTV0DkX read_nPos(); mGIS[_dcs } G B15 else xd*kNY { ]8RcZn nStartPos = new long[bean.getNSplitter()]; EfOJ%Xr[,l nEndPos = new long[bean.getNSplitter()]; 1&dWt_\ } rIXAn4,dTv @=$;^}JS| VL\6U05Z rA9"CN } |')Z; 3+)i23[4=\ 6,!]x>B public void run() >Zr`9$i { ?g!)[p`v //获得文件长度 r!;NH3 * //分割文件 x{=ty*E //实例FileSplitterFetch +;vfn>^!b //启动FileSplitterFetch线程 n04Zji(F@ //等待子线程返回 7y:J@fh< try{ 5[0n'uH if(bFirst) _ W$4Qn+f { @6\8&(| nFileLength = getFileSize(); -Z @cj if(nFileLength == -1) u|+O%s TQ { uoF9&j5E@Z System.err.println("File Length is not known!"); lO:[^l?F } /Qbt else if(nFileLength == -2) 8tsW^y;S { F77~156 System.err.println("File is not access!"); LNe-]3wB } !dZC-U~ else N/Z<v* i" { g4Tc (k# for(int i=0;i<nStartPos.length;i++) "BK&C6] { t/HE@xPxI5 nStartPos = (long)(i*(nFileLength/nStartPos.length)); vrH/Z.WD } :Vv=p*~ for(int i=0;i<nEndPos.length-1;i++) <CeDIX t { aaLT% nEndPos = nStartPos[i+1]; hEDj"`Px } 7Ij'!@no nEndPos[nEndPos.length-1] = nFileLength; 9Czc$fSSt } Ur_~yX]Mo } cBU>/
zIp F$d`Umqs;P 0rF{"HM~ //启动子线程 x6m21DW w fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; /KH3v!G0 for(int i=0;i<nStartPos.length;i++) syMB~g { 9kTU|py fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !}U&%2<69 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), F e8xOo6 nStartPos,nEndPos,i); H$Q_K<V Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !uHX2B+~ fileSplitterFetch.start(); &Jq?tnNd } oveW )~4 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7GpSWM6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); o: qB#8X // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", \T>f+0=4 nEndPos = " + nFileLength); \!`*F:7]- // fileSplitterFetch[nPos.length-1].start(); gJ :Z7b XBCz\f \
3ha //等待子线程结束 xCGvLvFn //int count = 0; k}~|jLu@g //是否结束while循环 st~f}w@ boolean breakWhile = false; 7R ;! H;|^z@RB< D.X%wJ8 while(!bStop) O]`CSTv'_ { fZ$8PMZv write_nPos(); F8.Fp[_tM Utility.sleep(500); Sa6}xe."M, breakWhile = true; jrG@
+" } 2UA h^i-^ "|(+~8[ for(int i=0;i<nStartPos.length;i++) n hS=t8H { ur"ckuG!9 if(!fileSplitterFetch.bDownOver) d.sxB}_O { njX!Ez breakWhile = false; 6*Rz}RQ break; LC2t,!RRl& } YEQ}<\B\& } [
q22?kT if(breakWhile) PO1sVP.S break; 8nW#Q<s }3ty2D#/: MX]<tR ` //count++; u9_ Fjm}& //if(count>4) UJ2Tj+ // siteStop(); g#W )EXUR } v~9PS2 >}Za) *ix&"|h System.err.println("文件下载结束!"); Bzw~OB{!=J } xbSix:R=Z catch(Exception e){e.printStackTrace ();}
PohG y } ?=$a6o ,_D`0B6o Y 8EL //获得文件长度 8N'[)Jw public long getFileSize() n'K,* { 3t)07(x_B int nFileLength = -1; twq!@C try{ \IQf| URL url = new URL(siteInfoBean.getSSiteURL()); %[l5){:05 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); b[%sKl httpConnection.setRequestProperty("User-Agent","NetFox"); +' QX` ez@`&cJ7 )\8l6Gw int responseCode=httpConnection.getResponseCode(); Dqs{n?@n if(responseCode>=400) $_onSYWr { ~K 5eO- processErrorCode(responseCode); X3P~z8_ return -2; //-2 represent access is error 4 bw8^ } !"Jne'f Ivmiz{Oii Ys|tGU String sHeader; .i)
H1sD *0^!%Y'/4 T8bk \\Od for(int i=1;;i++) 1kEXTs=, { IVjH.BzH9 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9@9(zUS| //Utility.log(in.readLine()); ,6uON@ sHeader=httpConnection.getHeaderFieldKey(i); |#^wYZO1U if(sHeader!=null) iimTr_TEt { @FKm_q if(sHeader.equals("Content-Length")) E3@G^Y { 4V@raI- nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); n6Je5fE break; i 3?=up! } dkVF } dDK4I3a else W2?6f: break; jdqVS @SD } JR] /\( } *](maF~%C catch(IOException e){e.printStackTrace ();} hd^?mZ catch(Exception e){e.printStackTrace ();} x1VBO.t=* >x]b"@Hkw c6.S jV Utility.log(nFileLength); (NR8B9qLN ">_<L.,I %
P
.(L return nFileLength; @ qy
n[C } SaceIV%( ux`)jOQ`Y] <&^P1x<x //保存下载信息(文件指针位置) 6O"?wN%$ private void write_nPos() |Ii[WfFA|J { R9@Dd try{ E%8Op{zv_ output = new DataOutputStream(new FileOutputStream(tmpFile)); :Aj8u\3!@ output.writeInt(nStartPos.length); GrPKJ~{6 for(int i=0;i<nStartPos.length;i++) t.Q}V5t{g { {Rc mjI7 // output.writeLong(nPos); K9O%SfshF output.writeLong(fileSplitterFetch.nStartPos); xV w9_il2a output.writeLong(fileSplitterFetch.nEndPos); }-jS0{i } [CxnGeKK output.close(); DLggR3K_\ } .
7*k}@k catch(IOException e){e.printStackTrace ();} .,[NJ:l catch(Exception e){e.printStackTrace ();} g^ .g9" } @`t#Bi9 H2[VZ&Pg 7~& //读取保存的下载信息(文件指针位置) tQ~vLPi$ private void read_nPos() goBl~fqy0 { w{TZN{Y try{ @pq2Z^SQ H DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); $1lI6 =
, int nCount = input.readInt(); 9n9Z nStartPos = new long[nCount]; l ld,&N8 nEndPos = new long[nCount]; ggn C #$ for(int i=0;i<nStartPos.length;i++) >1uo5,wrF { [.:SV|AF# nStartPos = input.readLong(); XK#~w:/fB nEndPos = input.readLong(); E/+H~YzO } T1$=0VSEa+ input.close(); B\^myg4 } st4z+$L catch(IOException e){e.printStackTrace ();} 8k[=$Ro catch(Exception e){e.printStackTrace ();} 8[v9|r } y950Q%B] {o>51fXc) b^s978qn# private void processErrorCode(int nErrorCode) >I*)0tE { @G'&7-(h* System.err.println("Error Code : " + nErrorCode); zP554Gr ? } oW
! Z=; n$Nb,/o 9d kuvk}: //停止文件下载 n0)0"S|y1 public void siteStop() S:5vC{ { Odn`q= bStop = true; )T0%<(J for(int i=0;i<nStartPos.length;i++) r{LrQ fileSplitterFetch.splitterStop(); }`fFzb ?`T0zpC |)5xm N] } Z01BzIsR } oyw*Z_ 9~ //负责部分文件的抓取 a%nksuP3 **FileSplitterFetch.java =:fN */ 0+3_CS++r package NetFox; >;qAj!' =1ltX+
}^Ymg7wA import java.io.*; G.{)#cR import java.net.*; qe/dWJBa 1Jm'9iy3 yj$a0Rgkv public class FileSplitterFetch extends Thread { 2eC`^ t@(:S6d t_xO-fT) String sURL; //File URL b?^CnMO long nStartPos; //File Snippet Start Position U~CG(9 long nEndPos; //File Snippet End Position ]9A@iA int nThreadID; //Thread's ID DjLSl,Z boolean bDownOver = false; //Downing is over xVnk]:c boolean bStop = false; //Stop identical ;15j\{r FileAccessI fileAccessI = null; //File Access interface ]#NJ[IZb %>io$ o npCiqO public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ^WF/gup\hS { Q$bi:EyJXc this.sURL = sURL; I@/s&$H`l this.nStartPos = nStart; Sgp1p} this.nEndPos = nEnd; hnYL<<AA nThreadID = id; r'F)8% fileAccessI = new FileAccessI(sName,nStartPos);//定位 C}'Tmi } {D{'
\]+ D`4>Wh/H D`9 a"o public void run() WY& [%r { V|\dnVQ'-% while(nStartPos < nEndPos && !bStop) #r,LV}*qg { |YnT;q pLiGky 8pXului try{ 9cqq"-$G` URL url = new URL(sURL); 2%Mgg,/~ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $-w&<U$E httpConnection.setRequestProperty("User-Agent","NetFox"); "7z1V{ ;Y String sProperty = "bytes="+nStartPos+"-"; 0Z4o3r[ httpConnection.setRequestProperty("RANGE",sProperty); w;p~|! Utility.log(sProperty); uN;]Fv@Z Ss~yy0 P->.eo#VG InputStream input = httpConnection.getInputStream(); hU|TP3* //logResponseHead(httpConnection); gm8FmjZtf eAl;:0=%L rYI7V? byte[] b = new byte[1024]; Z1dLC'/b] int nRead; VN/v] while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) }!_ofe { wZnv*t_ nStartPos += fileAccessI.write(b,0,nRead); bXNM.K //if(nThreadID == 1) #S|DoeFs // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6%A_PP3Z } X,mqQ7+ 4:0y\M5u Vh}F#~BrI Utility.log("Thread " + nThreadID + " is over!"); SJ8CBxA bDownOver = true; HU1ZQkf //nPos = fileAccessI.write (b,0,nRead); bu:%"l } `JAM]qB" catch(Exception e){e.printStackTrace ();} zL@FN sYVM } "i^<
H } `^mY*Cb e BM>'w,$KL .|g|X8X //打印回应的头信息 TbQ5 public void logResponseHead(HttpURLConnection con) Y;"rJxHD { MJ_]N+ for(int i=1;;i++) )|N_Q} { V`& O` String header=con.getHeaderFieldKey(i); i"RBk% if(header!=null) g4f:K=5: //responseHeaders.put(header,httpConnection.getHeaderField(header)); o,gH* Utility.log(header+" : "+con.getHeaderField(header)); e.'6q
($3 else !mIr_d2" break; 7^FJ+gN8b } !v\_<8 } ),rd7GB> RQO&F$R= ZcE:r+ public void splitterStop() &cf(} { +i@{h9"6g bStop = true; I-L:;~. } 0nsj ihw iOrpr,@ `Kb"`}`_vm } ]
^s, :cA%lKg ,SG-{ /* \'hZm%S **FileAccess.java
!XQq* *//文件访问(定位,写) L/KiE+Y package NetFox; |PxTm import java.io.*; fq<JX5DER ~]V}wZt>h chakp!S= public class FileAccessI implements Serializable{ Vk:] aveW .8dlf7* , //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 "pMx( RandomAccessFile oSavedFile; hF^y4v|5 long nPos; 13aj fH LQz6op}R fWs @ZCt public FileAccessI() throws IOException 'Da*MGu9 { w#^z:7fI this("",0); !4mg]~G } <! Z06 %3Tz%>n ;"w?@ELE public FileAccessI(String sName,long nPos) throws IOException vhd +A { B>UF dj]- oSavedFile = new RandomAccessFile(sName,"rw"); L+D 9ZE] this.nPos = nPos; b <z)4 oSavedFile.seek(nPos); h/pm$9A } C
@nA* I%M"I0FV GV0-"9uwX~ public synchronized int write(byte[] b,int nStart,int nLen) z(eAhK}6? { T)o>U&KNP int n = -1; ]114\JE try{ !g7lJ\B oSavedFile.write(b,nStart,nLen); 1LVO0lT n = nLen; {$QkerW3 } ~-f"&@){,
catch(IOException e) -*[:3% { _lMSW6 e.printStackTrace (); D~b_nFD } ;Q>+#5H6F8 czg9tG8 v%@)I_6[P return n; KdXqW0nm } wV^c@.ga ?np3*;lw 0vZ49}mb) } v2jpao<K pD17r}% 6wq>&P5 /* .R]DT5 **SiteInfoBean.java gP.PyYUV */ Yfr4<;% package NetFox; b_Dd$NC B'&QLO| W2BZG(dm public class SiteInfoBean { H>]A|-rG# b?K`DUju{0 Ctx`b[&KXX private String sSiteURL; //Site's URL 5@_kGoqd private String sFilePath; //Saved File's Path '.{_
7U private String sFileName; //Saved File's Name } fJLY\ private int nSplitter; //Count of Splited Downloading File #Q1}h ):lH 26ae|2?
public SiteInfoBean() lWakyCS {//nSplitter的缺省值为5 LYO2L1u) //default value of nSplitter is 5 bm poptfL this("","","",5); {s>V'+H(F } M(?0c}z k`w/ dJ{q}U public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) :i>If:>g { $38)_{ sSiteURL= sURL; [\e/xY(4 sFilePath = sPath; .Ta (v3om% sFileName = sName; H/y,}z this.nSplitter = nSpiltter; .: k6Kg _tRRIW"Vx"
<Hr~|oG } 8n35lI(
[ &grqRt o Vpq*" public String getSSiteURL() VWc)AfKe { #$
4g&8 return sSiteURL; 3EHB~rL/C } :DrF)1C zGNmc7 K /$-H#;N public void setSSiteURL(String value) <$u\PJF7_^ { i1ScXKO sSiteURL = value; [1nUq!uTm } Mc&Fj1h5 J7Mbv2D IN75zn*% public String getSFilePath() Tje(hnN { -3u ;U,} return sFilePath; <eZ*LK? } [HI$[:[ U!(es0rX _2Mpzv public void setSFilePath(String value) U C_$5~8p { GvZ[3GT sFilePath = value; {isL< } adPd}rt; _F5*\tQ ( k,?) public String getSFileName() zdm2`D;~p { e/&^~ $h return sFileName; E\ls- (, } 3m| C8: THARr#1b}; VeSQq public void setSFileName(String value) mVFo2^%v { BOWBD@y sFileName = value; u 7:Iv } A"z9t#dv@ 74 &q2g{ +D2I~hC0' public int getNSplitter() W>5[_d { _M+7)[xj= return nSplitter; s94*uZ(C/ } 0*_E'0L8e ,OERDWW|6 |Sm/s;&c6 public void setNSplitter(int nCount) ]6F\a= J { u-_1)' nSplitter = nCount; -
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f!{@{\ /* oKCv$>Y **Utility.java :_tt9J */ uXk] package NetFox; w {"1V7| jwUX?`6jX I _gE`N public class Utility { >ZW|wpO Z/dhp0k 4Us_Z{. public Utility() uuxVVgWp{ { qXhdU/
= Y%eq2% R8_I ASs } 'y=N_/+s GGf<9!: //线程睡眠 Le:(;:eL>t public static void sleep(int nSecond) h[&"KA { `<7!Rh,tS^ try{ ]Axz}: Thread.sleep(nSecond);
EY:IwDA.} } *AYq:n6 catch(Exception e) ""Da2Md { '_^T]fr} e.printStackTrace (); z:@:B:E } {}$Zff } 0|J_'-< 7}g4ePYag //日志 dI&Q5M8 public static void log(String sMsg) TL)*onA9 { (0B?OkQ System.err.println(sMsg);
g`%in } cP D_=.& &w#! c!_c, vwrn public static void log(int sMsg)
?C#E_ { ~MBPN4r System.err.println(sMsg); #c5jCy}n } N+h05` } l?=\9y D}q"^"#T "4;nnq /* 8!rdqI **TestMethod.java -(t7>s */ pF4Z4?W package NetFox; =E5bM_P<K __2<v?\ P RWb6 public class TestMethod { Qr9;CVW ?oFd%|I
fT|A^ public TestMethod() ,/D}a3JD { ///xx/weblogic60b2_win.exe Z*q9vX try{ gf1+yJ^d! SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); i=cST8!8N //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); KWZhCS?[( SiteFileFetch fileFetch = new SiteFileFetch(bean); 3iIy_nWC fileFetch.start(); qh:Bc$S } aPVzOBp catch(Exception e){e.printStackTrace ();} |Ha#2pt{bc vWZXb` =29IHL3 } MDU#V ?%h$deJ ca{MJz' public static void main(String[] args) Q-n8~Ey1a { ;~EQS.Qp new TestMethod(); d51'[?( } Aj)Q#Fd[ } 1|(Q| 点击下载更多相关资料
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