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/* 1fIx@ **SiteFileFetch.java v%2Dz */ j-**\.4a~ package NetFox; rf@47H import java.io.*; @VIY=qh import java.net.*; Pn9;&`t |1A0YjOD DHeZi3&i public class SiteFileFetch extends Thread { |X XO0 }xBO; R(&3})VOa SiteInfoBean siteInfoBean = null; //文件信息Bean Hu6Qr long[] nStartPos; //开始位置 .IY@Q long[] nEndPos; //结束位置 ey9hrRMR FileSplitterFetch[] fileSplitterFetch; //子线程对象 mP6}$D long nFileLength; //文件长度 gSwHPm%zn boolean bFirst = true; //是否第一次取文件 (91ts$jH boolean bStop = false; //停止标志 .nVY" C& File tmpFile; //文件下载的临时信息 Y7qQ`| DataOutputStream output; //输出到文件的输出流 lo6upirZX u]O}Ub` //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) GKF!GbGR@ public SiteFileFetch(SiteInfoBean bean) throws IOException 4 Cd5-I { 7_j t =sr siteInfoBean = bean;
n=~!x //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <{;'0> ToM tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); @oH\r-jsgu if(tmpFile.exists ()) .XeZjoJ$z { EJ<L,QH3 bFirst = false; 7\yh(+ kN read_nPos(); Wvu1? } \zk>cQ else
F{Yr8(UHA {
T;{}bc&I nStartPos = new long[bean.getNSplitter()]; L.-qTh^P nEndPos = new long[bean.getNSplitter()]; l4taD!WD/ } jP}Ry=V/ WwWOic2 os;94yd) (7!pc } toD!RE 9SA %' %rrD+ public void run() OIw[sum2 { bw/mF5AsW //获得文件长度 BKI-Dh //分割文件 a[j]fv*6 //实例FileSplitterFetch zx:;0Z:S6> //启动FileSplitterFetch线程 6+ptL-Zt< //等待子线程返回 c'VCCXe try{ F|!=]A< if(bFirst) 9mXmghoCO { u\@Qze nFileLength = getFileSize(); ALO/{:l( if(nFileLength == -1) $39TP@?:Z) { Dt7z<1-)l System.err.println("File Length is not known!"); Lh-Y5(c
o } SCMvq?9 else if(nFileLength == -2) %q;y74 { V(LfFO{^>? System.err.println("File is not access!"); ZR|s]' } :?z@T[- else u-jc8W`Zd { AEWrrE for(int i=0;i<nStartPos.length;i++) D(|+z-}M { N`H`\+ nStartPos = (long)(i*(nFileLength/nStartPos.length)); <Tbl|9 } p^w)@^f for(int i=0;i<nEndPos.length-1;i++) rbv { J~`!@! nEndPos = nStartPos[i+1]; 3rN}iSF^ } L_:~{jV nEndPos[nEndPos.length-1] = nFileLength; 99'c\[fd' } [K4k7$ } .)%,R ~^'t70 :D ,+v(?5[6 //启动子线程 x@O)QaBN! fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; !J {[XT for(int i=0;i<nStartPos.length;i++) vg X7B4 { z$g__q- fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), y!S:d siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), s{X+0_@Q nStartPos,nEndPos,i); 4T$jY}U Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6q0)/|,@ fileSplitterFetch.start(); H0lW gJmi| }
OU]"uV<( // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b 5K"lPr siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); g~9rt_OV // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", :~s*yznf nEndPos = " + nFileLength); mxJe\[I // fileSplitterFetch[nPos.length-1].start(); &ns??:\+T 9X#]Lg?b ih75C" //等待子线程结束 5__B
M5| //int count = 0; V}2[chbl //是否结束while循环
? uP5("c boolean breakWhile = false; i~<.@&vt '< >Q20 I'n}6D.M while(!bStop) U_Mag(^- { vGJw/ij'X write_nPos(); E"/k"1@ Utility.sleep(500); XS&;8 PO breakWhile = true; 9MQwc {Ngut pxyFM@Z]( for(int i=0;i<nStartPos.length;i++) Ho&f[T( { ?TW? 2+ if(!fileSplitterFetch.bDownOver) aDLlL?r3 { uz3 ?c6b breakWhile = false; , :KJ({wM break; QGErQ
+l } 6y?uH;SL } r@'~cF]m if(breakWhile) KNP^k$=)3c break; q/@r# W_/$H_04+ hQL@q7tUr //count++; YF;2jl Nm //if(count>4) 4@ny%_/ // siteStop(); J=O_nup6C } [V;u7Z\r- W5Jb5 Pu BE=9, System.err.println("文件下载结束!"); :Us+u-~ } SD:Bw0gzrI catch(Exception e){e.printStackTrace ();} `!ja0Sq]U } y<v-,b* !@T~m1L
eY mpIR: Im //获得文件长度 mv$gL public long getFileSize() rJ6N'vw> { (X2[}K int nFileLength = -1; ?g*.7Wc try{ L0%W;m URL url = new URL(siteInfoBean.getSSiteURL()); W ,]Ua] HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); {[{jlG4H httpConnection.setRequestProperty("User-Agent","NetFox"); s!F8<:FRJD Fs=E8' b tgeXX1Eq! int responseCode=httpConnection.getResponseCode(); t""Y -M if(responseCode>=400) Nh4&3"g| { 2G:KaQ) processErrorCode(responseCode); FiXE0ZI$0q return -2; //-2 represent access is error Kj4L PG } Yfz`or\@= i~4$V (ze9-!% String sHeader; Q+U" % SU~ljAF4 {G|= pM\' for(int i=1;;i++) H:16aaMn( { 6mIRa(6V //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); f{(D+7e} //Utility.log(in.readLine()); J~ z00p`E sHeader=httpConnection.getHeaderFieldKey(i); 69odE+-X. if(sHeader!=null) o6:]Hvqjr { ~sWXd~\ if(sHeader.equals("Content-Length")) S[&yO-=p6 { oHu 7<r nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); [4PiQyr break; q((%sWp } zItGoJu } %wJ?+D/ else jnFN{(VH break; (~PT(B? } O;(n[k } VZk;{ catch(IOException e){e.printStackTrace ();} pWoeF=+y]W catch(Exception e){e.printStackTrace ();} JY D\VaW
SmAF+d H]{`q Utility.log(nFileLength); Vg"v C OeQ~g-n j#H&~f return nFileLength; S09Xe_q } ]4\6_J& HJe6h. P Fa X 3@Sd! //保存下载信息(文件指针位置) 0v3
8LBH) private void write_nPos() v/Xz.?a\jF { }ol<DV try{
G98f Bw output = new DataOutputStream(new FileOutputStream(tmpFile)); *E/CNMn=E output.writeInt(nStartPos.length); EPEn"{;U for(int i=0;i<nStartPos.length;i++) I$fm"N { `TDS4Y // output.writeLong(nPos); R]S!PSoL output.writeLong(fileSplitterFetch.nStartPos); f Q2U| output.writeLong(fileSplitterFetch.nEndPos); lt0byn$vz } LdX'V]ITh output.close(); R\u5!M$:: } Dv=pX.Z+ catch(IOException e){e.printStackTrace ();} XpT~]q} catch(Exception e){e.printStackTrace ();} *OY
Nx4 k } (Ii+}Mfp e{ZS"e`! &&sm7F% //读取保存的下载信息(文件指针位置) S$GWY^5}{ private void read_nPos() H5A7EZq}` { q9$K.=_5 try{ (^)(#CxO DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); AIM<mU int nCount = input.readInt(); 'W p~8}i@ nStartPos = new long[nCount]; mbIHzzW> nEndPos = new long[nCount]; A] f^9F@ for(int i=0;i<nStartPos.length;i++) %^;rYn3 { *adwCiB nStartPos = input.readLong(); 9%?a\#C nEndPos = input.readLong(); -JdNA2P
} h,i=Y+1 input.close(); 90a!_8o } LH q~` catch(IOException e){e.printStackTrace ();} @u-CR8^ catch(Exception e){e.printStackTrace ();} D.w6/DxaXa } '=ydU+X 42PA?^xPw U~8, N[ private void processErrorCode(int nErrorCode) #sf1,k5' { Es1T{<G|w System.err.println("Error Code : " + nErrorCode); *HQ>tvUh } zi+NQOhR edfb7prfTl mfgUf //停止文件下载 lnrs4s Km public void siteStop() }Y3*X:i7 { JuRx>F4 bStop = true; `t]8 [P5 for(int i=0;i<nStartPos.length;i++) !=v d:, fileSplitterFetch.splitterStop(); 7@ !3.u1B B[7Fq[.mh @F!oRm5 } _Q\<|~ }
4{D^ 4G //负责部分文件的抓取 ?;
tz **FileSplitterFetch.java %VO>6iVn */ 9G{#a#Z. package NetFox; '.t{\ cx*$GaMk 5Ln !>, import java.io.*; qo:t"x^ import java.net.*; 7k#0EhN 1> XlxM.;i0H wF{M"$am public class FileSplitterFetch extends Thread { LcmZ"M6 nm@.]
"/ j
k/-7/r String sURL; //File URL 249DAjn+ long nStartPos; //File Snippet Start Position #7naI*O long nEndPos; //File Snippet End Position 'F^"+Xi
int nThreadID; //Thread's ID jlaC: (6 boolean bDownOver = false; //Downing is over `_<O_ boolean bStop = false; //Stop identical cIXqnb FileAccessI fileAccessI = null; //File Access interface 8AmB0W>e 6JE_rAab E-HK=D&W/ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException tx}=c5 { x Z`h8 this.sURL = sURL; -y8>c0u this.nStartPos = nStart; U{8x.CJ] this.nEndPos = nEnd; A=BT2j'l) nThreadID = id; )$QZ",&5 fileAccessI = new FileAccessI(sName,nStartPos);//定位 md/NMC
\ } x UTlM ~{{@m]P C9nCSbGMY{ public void run() l +#FoN { E5t
/-4 while(nStartPos < nEndPos && !bStop) Y?JB%%WWI { ST[E$XL6 ?2Sm
f c- "# try{ (6X{ & URL url = new URL(sURL); .-.b:gdO( HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); CWS]821; httpConnection.setRequestProperty("User-Agent","NetFox"); cjf_,x String sProperty = "bytes="+nStartPos+"-"; Kq}-) httpConnection.setRequestProperty("RANGE",sProperty); kFQx7m Utility.log(sProperty); .N Z GBGna3 r5PZ=+F InputStream input = httpConnection.getInputStream(); x{$/|_ //logResponseHead(httpConnection); >$;,1N $bd PS` F \kC'y9k byte[] b = new byte[1024]; iq3TP5%i int nRead; \qB.>f"%p| while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) zKNac[: { GT-ONwVDq nStartPos += fileAccessI.write(b,0,nRead); VN]"[ //if(nThreadID == 1) UMlvu?u2p1 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); dIk9C|-. } ZtX\E+mC jluv}*If 5ih5=qX Utility.log("Thread " + nThreadID + " is over!"); $!\Z_: bDownOver = true; B1z7r0Rm, //nPos = fileAccessI.write (b,0,nRead); (4FZK7Fm } F[~~fm_ catch(Exception e){e.printStackTrace ();} 4'H)h'#C } C@9K`N[* } "Q;Vy t e@g=wN"@ !+n'0{ //打印回应的头信息
O]Q8&( public void logResponseHead(HttpURLConnection con) M~g@y$ { {R7m qzt for(int i=1;;i++) 92 1s'" { :qtg `zM/4 String header=con.getHeaderFieldKey(i); >9X+\eg- if(header!=null) X9ec*x //responseHeaders.put(header,httpConnection.getHeaderField(header)); R{{?wr6b$ Utility.log(header+" : "+con.getHeaderField(header)); XZj3x',; else .8]=yPm break; L.%zs } Kj#h9e } <|VV8r93 M#xol/)h Q VWVZ >l public void splitterStop() -z>m]YDH { SHqz&2u bStop = true; Gc<^b } L:Me q`L}\}o BJnysQ } z=qxZuFkDs rz5@E PH=O>a`a_O /* JgcMk]|' **FileAccess.java c)SQ@B@q *//文件访问(定位,写) Q,R|VI6Co package NetFox; M&0U@ r- import java.io.*; [m9=e-KS$Q 4&H&zST//m Q8NrbMrl public class FileAccessI implements Serializable{ bl4I4RB g7Z3GUCGL //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Hx ojxZwm RandomAccessFile oSavedFile; @EUvx long nPos; j +Ro? /@6T~XY M h{CyYsQ public FileAccessI() throws IOException CA,2&v" { p}q]GJ this("",0); vJ uL+'[i } T_<: p?x]|`M ^6 \@$ public FileAccessI(String sName,long nPos) throws IOException Uk4G9}I { x6
h53R oSavedFile = new RandomAccessFile(sName,"rw"); Gvc/o$_ this.nPos = nPos; b`|,rfq^AZ oSavedFile.seek(nPos); NeniQeR } S,RC;D7 I<hMS6$<LE 7:wf!\@I public synchronized int write(byte[] b,int nStart,int nLen) 3s_$. { |7b@w;q,D int n = -1;
OdtS5:L try{ q=+wQ[a< oSavedFile.write(b,nStart,nLen); HLl"=m1/> n = nLen; M|qJZ#{4> } Zu/1:8x catch(IOException e) Z xR { Qz([\Xx: e.printStackTrace (); ;%O>=m'4 } ='<*mT< Z%7X" w -m Sf`1l0 return n; iG=XRctgj) } }dG>_/3 3y*dBw ?# )\SQ } v\Zq=,+ i/F].Sag (2r808^2 /* \7 }{\hY- **SiteInfoBean.java 'BNZUuUl */ 3 /LW6W| package NetFox; 6?= ^8 tflUy\H> 4_o+gG%HaM public class SiteInfoBean { "mAMfV0 VPOp#;"% VBe&of+ private String sSiteURL; //Site's URL }1Pv6L(o) private String sFilePath; //Saved File's Path kj' private String sFileName; //Saved File's Name iayxN5, private int nSplitter; //Count of Splited Downloading File }K9Ji]tOK: 7OLchf
8V+ public SiteInfoBean() zA@w[. {//nSplitter的缺省值为5 dt(Lp_&v //default value of nSplitter is 5 #YB3Ug]z this("","","",5); )!d_Td\- } bdvVPjGc& OCI{)r<O2m 0Y/k/)Ul] public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ou[Wz{ { NucLf6 sSiteURL= sURL; .
"`f~s\G sFilePath = sPath; 3y-P-NI~= sFileName = sName; }62Q{>` this.nSplitter = nSpiltter; $"`e^J9!! TV(%e4U= <"!'>ZUt } P;p;o] sW!MV v (t"rzH public String getSSiteURL() 5z"[{#/ { Ms=11C return sSiteURL; -A1:S'aN- } "oT]_WHqo lsB.>N lU PF:E{_~ public void setSSiteURL(String value) :6}cczQE|O { W29GM -,K sSiteURL = value; @D@'S:3 } 2w/qH4 j9 &0/
~/ :c0 |w public String getSFilePath() Kg#s<# h { KPdlg. return sFilePath; eEg>EI_U } *ZF:LOnU wI2fCq(a0 2Q[q)u public void setSFilePath(String value) n|!O .+\b { No(S#,vJ; sFilePath = value; 5
OF*PBZ } u&$1XZ!es B \>W ^j]"5@f public String getSFileName() Q?-u J1J { scR+F'M return sFileName; 30L/-+r1 } |sV@j_TX zjwo"6c> x DX_s:A public void setSFileName(String value) R5'_il { k1M?6TW& sFileName = value; t:qPW<wc } RX\@fmK& B-aJn8>/ E0"DHjR public int getNSplitter() X e\,:~ { kF7`R4Sz return nSplitter; ,4kipJ!,yK } (r$QQO)/ W[.UM ?XO}6q<tM public void setNSplitter(int nCount) 5fud:k { 8^"P'XQ nSplitter = nCount; *wK7qS~VB2 } o1@.
<Q+} } }7/Ob)O q|.K&@_'K Y'M}lv$sa /* j:'!P<# **Utility.java r2>y
!Q? */ \DRYqLT` package NetFox; O<6!?1|KP ~aRcA|` 7\JA8mm public class Utility { ~n!7 ?4%U C~:!WRCz iVb#X# public Utility() wq`\p['Q, { _JXb|FIp -Hu]2J) C**kJ } J|[`8 *8 PVUNi: h //线程睡眠 X.<2]V7! public static void sleep(int nSecond) ' $X}' u { @)m+b; try{ 4p_@f^v~QH Thread.sleep(nSecond); HH,G3~EBF } p4I6oS`/. catch(Exception e) S]&7 { ;gv9J[R e.printStackTrace (); t&Z:G<; } qf6}\0
} SZ"^>}zl= Gzu $ //日志 KoO\<_@"; public static void log(String sMsg) 3?oj46gP { XW9
[VUW~ System.err.println(sMsg); y5bELWA } jYJfo< $)Pmr1== *`.4M)Ym~ public static void log(int sMsg) LjA>H>8%[ { &y=~:1&f System.err.println(sMsg); pM'AhzS } oFUP`p%[ } (_O_zu8_ 9:jZ3U mbRN W /* B$cx
'_zF **TestMethod.java >QM$
NIf@ */ wXxk+DV@ package NetFox; ~",,&>#[K )t$|'c} .]W A/} public class TestMethod { Uw5`zl ^YG.eT6iG 1]j_4M14aA public TestMethod() &`4v,l^Zi6 { ///xx/weblogic60b2_win.exe k,nRC~Irh try{ K# dV. SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 0q
^dpM //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); +R?d6IjH SiteFileFetch fileFetch = new SiteFileFetch(bean); _K"X fileFetch.start(); 1p9+c~4l: } m]NyEMYg catch(Exception e){e.printStackTrace ();} p6'wg#15 *S@0o6v mf)o1O&B } (j;6}@ " |l-NUe ,:QDl public static void main(String[] args) H:HJHd"W { L'Fy\K\ new TestMethod(); A_WtmG_9 } *FT )` } bqDHLoB\1 点击下载更多相关资料
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