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/* <aI}+ **SiteFileFetch.java #hMkajG */ Ww#!-,*]o package NetFox; +Yc@<$4 import java.io.*; y0/FyQs import java.net.*; [;ZC_fD vF>]9sMv (A=Z,ed public class SiteFileFetch extends Thread { $H]NC-\+> aygK$.wos cRNVqMpg SiteInfoBean siteInfoBean = null; //文件信息Bean GdrVH,j long[] nStartPos; //开始位置 S2W@;XvV long[] nEndPos; //结束位置 ^\Q%VTM FileSplitterFetch[] fileSplitterFetch; //子线程对象 ZvO1=*
J, long nFileLength; //文件长度 )UVekkq>Q boolean bFirst = true; //是否第一次取文件 i->G{_gH boolean bStop = false; //停止标志 !@y/{~Gu File tmpFile; //文件下载的临时信息 i
XGy*#>V DataOutputStream output; //输出到文件的输出流 acQHqR jB0Ts;5 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _{eA8J(A<
public SiteFileFetch(SiteInfoBean bean) throws IOException G-;EB { ?du*ITim siteInfoBean = bean; '
~fP#y //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 3"k n5)x tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 3SPXJa\i if(tmpFile.exists ()) 6K=}n] n { D]|{xK C} bFirst = false; kc}|L9 read_nPos(); AR&l9R[{N } zAJC-YC6 else p<wC{D { O'3/21)|y nStartPos = new long[bean.getNSplitter()]; 0($On`# nEndPos = new long[bean.getNSplitter()]; 6E^9> } |
q elvK* `VDvxl@1 DnW/q &F Yv4J } `~41>mM% &!M6{O=~ Rtl1eJ- public void run() JeA_mtSQ| { ~C3Ada@4 //获得文件长度 3*(><<ZC //分割文件 yx ;K&> //实例FileSplitterFetch +kD JZ //启动FileSplitterFetch线程 +>$Kmy[3 //等待子线程返回 yUO%@; try{ Uty0mc( if(bFirst) t%f>*}*P* { xj3{Ke`6 nFileLength = getFileSize(); YRd`G3J if(nFileLength == -1) =wD&hDn4 { yT='V1 System.err.println("File Length is not known!"); >Ad`_g6Wew } ,Ik~E&Ku2' else if(nFileLength == -2) `@vksjxu { [~`p~@\+ System.err.println("File is not access!"); P4|A\|t } 141xi;o else bUSa#pNO> { W{j(=<|< for(int i=0;i<nStartPos.length;i++) N%e^2O) { ]&P 4QT)f nStartPos = (long)(i*(nFileLength/nStartPos.length)); *Ue#Sade } }9;mtMR$ for(int i=0;i<nEndPos.length-1;i++) CteNJBm { .0;\cv4} nEndPos = nStartPos[i+1]; :QXKG8^ } 7+hc?H[&' nEndPos[nEndPos.length-1] = nFileLength; ua_,c\iL } W%o! m,zFM } ^< *Gj`1#Z$ Ag8lI+
h //启动子线程 1Y~'U
=9 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 8|5+\1!#/) for(int i=0;i<nStartPos.length;i++) 6Lg#co}9 { 3 +`,'Q9 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fRkx ^u
P siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 6k<3,`VV| nStartPos,nEndPos,i); ~d ~oC$=TC Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); B7oUS}M fileSplitterFetch.start(); 2=1qmQE } kqq1;Kd // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), s;]"LD@ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); gi)C5J4
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", :7(d6gEL nEndPos = " + nFileLength); /ZH* t \ // fileSplitterFetch[nPos.length-1].start(); wub7w# JRAU|gr Lc "{ePFh //等待子线程结束 L6ypn)l //int count = 0; "1%k"+& //是否结束while循环 ?`6Mfpvj96 boolean breakWhile = false; cHVu6I?h QXEZ?gx T|
R!Aw. while(!bStop) z=8l@&hYLq { K
6,c||#< write_nPos(); ]"j%:fr Utility.sleep(500); .G"T;w6d breakWhile = true; `R lWhdE -B-HZ_ x@pzgqi3 for(int i=0;i<nStartPos.length;i++) fWF!% |L { qQ,(O5$| if(!fileSplitterFetch.bDownOver) KxfH6:\RB { r]wy-GT breakWhile = false; t_(S e break; NL!xkcXO } s9fEx-!y } I+jc if(breakWhile) yWr&G@>G break; A-$C6q 'kg~#cf/+ WM=)K1p0u //count++; $d&7q5[ //if(count>4) 2o W'B^- // siteStop(); DLe>EU;vS } 2&AX_#P ~i>'3j0@k ^nQJo"g\ System.err.println("文件下载结束!"); )]m4FC: } #ZHKq7 catch(Exception e){e.printStackTrace ();} 7&L8zl|K } )[yKO 6QP T @]EdUzzKq //获得文件长度 -:b<~S[ public long getFileSize() \Z~
<jv { {WeRFiQ?- int nFileLength = -1; hIa,PZ/Q try{ ?b(DDQMf URL url = new URL(siteInfoBean.getSSiteURL()); I6S>*V HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &@PAv5iNf httpConnection.setRequestProperty("User-Agent","NetFox"); l[nf"' a"k,x-EL( :U @L$ int responseCode=httpConnection.getResponseCode(); e
>7Ka\ if(responseCode>=400) M?['HoRo { @Qqf4h processErrorCode(responseCode); cn9=wm\\ return -2; //-2 represent access is error CKU)wJ5t } }UG<_bE| D{4]c)> ItAC=/(d String sHeader; GzT?I
7|M &kH7_Lz X{h[ for(int i=1;;i++) V:g XP1P { KF`mOSP //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ~6OdwGWV //Utility.log(in.readLine()); (W9 K:]} sHeader=httpConnection.getHeaderFieldKey(i); =]<X6!0mR if(sHeader!=null) P>|sCF { .e5rKkkT if(sHeader.equals("Content-Length")) ,JJ1sf2A { Jd33QL}Hj nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); :1#$p break; !B#tJD } g{m~TVm' } Z>W&vDeuN else xQqZi b5I break; VB4ir\nF } xp"F)6 } !Jaj2mS.N catch(IOException e){e.printStackTrace ();}
w4UJXc catch(Exception e){e.printStackTrace ();} :&s8G* !1bATO:x pEb/ yIT" Utility.log(nFileLength); 1EliR uJ 3gW+|3E zR}vR9Ls return nFileLength; jZqCM{ } asYUb&Hz88 ~A*$+c( \Iz-<:gA' //保存下载信息(文件指针位置)
8oJp_sw private void write_nPos() (i]0IYMXy* { ,k,+UisG try{ ,WS{O6O7 output = new DataOutputStream(new FileOutputStream(tmpFile)); k|
>zauK output.writeInt(nStartPos.length); ^O3p:X4u for(int i=0;i<nStartPos.length;i++) ,.uI> { :U'Oc3l#Y // output.writeLong(nPos); S$nEflcz output.writeLong(fileSplitterFetch.nStartPos); ^=w){]G output.writeLong(fileSplitterFetch.nEndPos); sfCU"O2G } ER<Z!*2 output.close(); #:[CF: } =o4McV} catch(IOException e){e.printStackTrace ();} q&: t$tSS catch(Exception e){e.printStackTrace ();} C)ebZ3 } XC[bEp$ 8?t}S2n2 ?#u_x4==e //读取保存的下载信息(文件指针位置) PE2O$:b\ private void read_nPos() =UZm4=T { `q?@ Ob& try{ x)e(g}n DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); JE[J}-2 int nCount = input.readInt(); t~
z;G%a nStartPos = new long[nCount]; fZ pUnc nEndPos = new long[nCount]; +Pb@@C& for(int i=0;i<nStartPos.length;i++) Yr 1k\q { /m+.5Qz9)@ nStartPos = input.readLong(); *En4~;l nEndPos = input.readLong(); $Q56~AP } Qy|6A@ input.close(); }j|YX&`p } Zex`n:Wl?j catch(IOException e){e.printStackTrace ();} ROr| < catch(Exception e){e.printStackTrace ();} \Oa11c`6 } qUG)+~g` 3aEO9v,n =~{W;VZt' private void processErrorCode(int nErrorCode) a*Ng+~5)6 { -!:h] System.err.println("Error Code : " + nErrorCode); MF4B 2d } :.W</o~\s jg=}l1M" X6EnC57 //停止文件下载 p(S {k]ZL@ public void siteStop() WlnS.P\+E { j79$/ Ol
bStop = true; =42NQ{%@; for(int i=0;i<nStartPos.length;i++) QhmOO-Z? fileSplitterFetch.splitterStop(); bODyJ7=[ ,IQ%7*f;O_ ')~[J$qz } 5*r5?ne } (Ei} :6,} //负责部分文件的抓取 jI,?*n< **FileSplitterFetch.java 3+WostOx */ p"=8{LrO package NetFox; S+//g+e|f 9c=`Q5 gYvT'72 import java.io.*; <'z.3@D import java.net.*; _}:#T8h bn0Rv eLN[`hJ public class FileSplitterFetch extends Thread { g9:V00^< !jyy`q= 6eAJ>9@x String sURL; //File URL 5D`!Tu3 long nStartPos; //File Snippet Start Position td\'BV long nEndPos; //File Snippet End Position 55vI^SSA int nThreadID; //Thread's ID
:A]CD( boolean bDownOver = false; //Downing is over h&:6S boolean bStop = false; //Stop identical *aS[^iX?s FileAccessI fileAccessI = null; //File Access interface g2W ZW#a) L$
ZZ]?7j 38gEto#q public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException =1Tn~)^O { ;@G5s+<l this.sURL = sURL; }R2afTn[; this.nStartPos = nStart; v!%VH?cA8 this.nEndPos = nEnd; m0+'BC{$u nThreadID = id; @[w.!GW% fileAccessI = new FileAccessI(sName,nStartPos);//定位 VfJdCg_ } [rtMx8T {.D/MdwW; yDXW#q public void run() WS1$cAD2N { PBp+(o- while(nStartPos < nEndPos && !bStop) ]:F?k#c { #FsoK*F p)w{}@%r ^DOQ+ try{ 5qQ\ H} URL url = new URL(sURL); Ur2)];WZ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -<M'h httpConnection.setRequestProperty("User-Agent","NetFox"); #wP$LKk String sProperty = "bytes="+nStartPos+"-"; gaxxB]8 httpConnection.setRequestProperty("RANGE",sProperty); P~ 7p~ke Utility.log(sProperty); >`u/#mrd :}p<Hq 8Z X UcM~U- InputStream input = httpConnection.getInputStream(); Jw)-6WJ!uO //logResponseHead(httpConnection); g"Gj8QLDz p-,(P+Np %8~g#Z byte[] b = new byte[1024]; P_Ni
5s) int nRead; &(YNz9L while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) V[baGNe { V{yk nStartPos += fileAccessI.write(b,0,nRead); u<K{=94!e //if(nThreadID == 1) fT // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); +DA,|~k_ } ( t59SY f~Q]"I8w a7wc>@9Q, Utility.log("Thread " + nThreadID + " is over!"); A,#a?O6m bDownOver = true; +EE(d/f //nPos = fileAccessI.write (b,0,nRead); <A@qN95m } _&|<(m&." catch(Exception e){e.printStackTrace ();} C!s !j } *ci%c^}V } }D7} %P] o`<ps$yT `sPH7^R //打印回应的头信息 ;Br
#e1~ public void logResponseHead(HttpURLConnection con) !;h`J:dN { \1mTKw)S for(int i=1;;i++) z]bcg$m { z`KP
}- String header=con.getHeaderFieldKey(i); yy#4DYht if(header!=null) %m?$"<q_K //responseHeaders.put(header,httpConnection.getHeaderField(header)); Zia<$kAO Utility.log(header+" : "+con.getHeaderField(header)); \:|"qk else o0\d`0-el break; n>aH7 } Ch,%xs.)G } lz88//@gZ 8xQjJ kcyT#'=j public void splitterStop() `d6,]' { 6qH^&O][ bStop = true; ~ w,hJ ` } 9G=HG={ 5BsfbLKC hR(p{$-T } Mv#\+|p 1x g&`[r6B (Q~(t /* 6 Z7J<0 **FileAccess.java ; 6*Ag#Z *//文件访问(定位,写) kRH;c,E@ package NetFox; `R{ ZED
l' import java.io.*; [>wvVv z1`z
k0 to"[r public class FileAccessI implements Serializable{ $mZpX:7/u8 #uHl //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @!:_r5R~N RandomAccessFile oSavedFile; \jGvom. long nPos; @#W$7Gwf0 PP_fTacX 1?N$I}? public FileAccessI() throws IOException ;$>wuc'L { gg}^@h&? this("",0); yNkE> } O| zLD >HlQ+bl$xw `p{,C`g,R public FileAccessI(String sName,long nPos) throws IOException <;.->73E { @!zT+W& oSavedFile = new RandomAccessFile(sName,"rw"); HG)c\b this.nPos = nPos; 4bZ
+nQgLu oSavedFile.seek(nPos); I'%(f@u~ } ` "JslpN 0&k!=gj:>Z 9}DF*np`G public synchronized int write(byte[] b,int nStart,int nLen) Yt%
E,U~g { 4hh=z>$|l) int n = -1; Wy.Xx-3W try{ YMEI
J} oSavedFile.write(b,nStart,nLen); j*05!j<' n = nLen; Wr+1G 8 } |~I- catch(IOException e) |#D$9+ { YDMimis\H5 e.printStackTrace (); 5{uK;Vxse } gQ=g,X4 "TgE@bC :5M7*s)e16 return n; I N'a5&.. } &^W91C?<6 t% f6P ]{<`W5b/ } /kY|PY )|@ H#kv? CL-mt5Kx#7 /* \%! ~pfM I **SiteInfoBean.java CrIt h/Z */ )KLsa`RV: package NetFox; +s'qcC utvZ<zz` uM^eoh_ public class SiteInfoBean { KiJR q> Pkbx/\ F9Ag687w private String sSiteURL; //Site's URL $`emP
Hel private String sFilePath; //Saved File's Path z$>_c"D private String sFileName; //Saved File's Name -K_p?
l private int nSplitter; //Count of Splited Downloading File H-sJt: p(F}[bP |GvWHe` public SiteInfoBean() '$3]U5KOwK {//nSplitter的缺省值为5 >*PZ&"}M //default value of nSplitter is 5 ByrK|lVM0 this("","","",5); 9aR-kcvJIJ } OeuM9c{ @k!J}O
K $EB&]t+ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) }T?0/N3y& { <J`",h sSiteURL= sURL; G 1rsd sFilePath = sPath; #S/]=D sFileName = sName; )Qe4J0. this.nSplitter = nSpiltter; cViEvS r mZ^z%+Ca| H+`s#'(i_P } zoV4Gl "eq{_4dL Zz<k^ public String getSSiteURL() fWx
%?J { 37hs/=x return sSiteURL; K85;7R5 } (c X;a/BR 4L RrrW 8,Jjv* public void setSSiteURL(String value) J6eF7 fa { j~(s3pSCo sSiteURL = value; L>
ehL(]! } cnQ;6LtFTz hjVct
r '~HCYE:5 public String getSFilePath() G x;U 3iV { >+iJ(jqq return sFilePath; B?
$9M9 } [Bn C_^[W &@tD/Jw3 4l/hh|3@ public void setSFilePath(String value) Yv?nw-HM { >wz&{9ni sFilePath = value; 5OUGln5 } xV&c)l>} 'Vwsbm
tY A>@ i
TI public String getSFileName() +gZg7]!Z { .+|HJ( return sFileName; dWK;
h } \qx$h!< )-D{]>8 &cnciEw1 public void setSFileName(String value) snPM& { Tm!pAD sFileName = value; ,$i2vGd } Y>Oh]? x*]&Ca0+ ZY_aE public int getNSplitter() }HO3D.HE^ { $AGW8" return nSplitter; ;WydXQ}Q^ } HPz9Er )qDCh *P\$<4l public void setNSplitter(int nCount) mGss9eZa { ]q#w97BxiJ nSplitter = nCount; #~3$4j2U(y } :%_*C09 } RKI BFP8. 3X&'hz@ (T290a9y> /* GyirE` **Utility.java .b.pyVk */ (R'GrN> package NetFox; I&2)@Zw 79m',9{u K1S:P( S public class Utility { NOC8h\s}( p"%K(NL caG5S#8-" public Utility() , %8keGhl { o|Q:am'H eo#2n8I>=1 2p^Jqp`$ } 9i6z p' |M8FMH[_ //线程睡眠 ":qhO0 public static void sleep(int nSecond) D^_]x51> { 9Dat
oi try{ -0I]Sm;$ Thread.sleep(nSecond); M%yeI{m } 5L?_AUL catch(Exception e)
=,MX%-2 { hFW{qWP e.printStackTrace (); `6No6.\J } ",v!geMvu } A$JL"~R *#n#J[ //日志 +hIC N,8! public static void log(String sMsg) 7>-"r*W +z { E;o
"^[we System.err.println(sMsg); -XJXl}M. }
~ERA *GZ7S
m Kggc9^ 7 public static void log(int sMsg) r(ZMZ^ { pdw;SIoC System.err.println(sMsg); h,*-V 'X.k } c,yjsxETW } dED&-e# hZw bYvu J<vVsz+7: /* ML!>tCT **TestMethod.java srGF=1_ */ V*I2
package NetFox; d71|(`& *SmR|Qy K ; eR) public class TestMethod { Puq Zk+c9, q N51e.; public TestMethod() 9F"^MzZ { ///xx/weblogic60b2_win.exe SZVAf|]Yg try{ KsDovy< SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); J=?P`\h //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); VprrklZ SiteFileFetch fileFetch = new SiteFileFetch(bean); '89nyx&W fileFetch.start(); >Tp`Kri } eJy}W / catch(Exception e){e.printStackTrace ();} ra|Ku! &~&oB;uR &C |