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/* ij),DbWd **SiteFileFetch.java Tk:y>P!%a */ lb('r"*. package NetFox; "869n37 import java.io.*; M@3H]t? import java.net.*; :U>
oW97l XDGZqkt 1 &<@(S< public class SiteFileFetch extends Thread { VQ;=-95P Xz@>sY>Jc (
FRf.mv{ SiteInfoBean siteInfoBean = null; //文件信息Bean l]Sui_+ZU long[] nStartPos; //开始位置 8K/lpqw long[] nEndPos; //结束位置 D.e*IP1R FileSplitterFetch[] fileSplitterFetch; //子线程对象 ZjK~s)RC long nFileLength; //文件长度 90!Ib~7zH boolean bFirst = true; //是否第一次取文件 +A3H#' boolean bStop = false; //停止标志 a*8}~p, File tmpFile; //文件下载的临时信息 ;FBc^*q DataOutputStream output; //输出到文件的输出流 |"<
I\Vs: !|/fVWH //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) N@$%0! public SiteFileFetch(SiteInfoBean bean) throws IOException )em.KbsPPF { Z0=OR^HjA siteInfoBean = bean; uwka 2aSS //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); |<0@RCgM tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #rwR)9iC0 if(tmpFile.exists ()) *GhRU5 { BTyVfq
sx bFirst = false; >R<fm read_nPos(); [C6?:'}FA } \zUsHK?L"t else NC}#P<U { ){:aGGtko nStartPos = new long[bean.getNSplitter()]; v(O.GhJ@ nEndPos = new long[bean.getNSplitter()]; O#\>j } =.c"&,c?L vo-{3]u#= | |=Duk 5,Y2Lzr } K;PpS*! 2'U9!.o >e ;f{ public void run() O~el2 { I1~g?jpH //获得文件长度 bRK9Qt#3 //分割文件 Tjqn::~D //实例FileSplitterFetch B .mV\W //启动FileSplitterFetch线程 M}Mzm2d#` //等待子线程返回 *@nUas2" try{ ?s]`G'=>V` if(bFirst) JPG!cX% { [
UJj*n nFileLength = getFileSize(); )QD}R36Ic if(nFileLength == -1) C.-a:oQ[ { o{p_s0IX;S System.err.println("File Length is not known!"); 3XtGi<u } 9_3M}|V$^e else if(nFileLength == -2) &?6w2[} { \tx/!tA System.err.println("File is not access!"); Cj+=9Dc } v_0!uT5~NE else #8jd,I%L { k Dt)S$N4n for(int i=0;i<nStartPos.length;i++) MavO`m&Cg { (SK5pU nStartPos = (long)(i*(nFileLength/nStartPos.length)); ]w>fnew } N sL"p2w~ for(int i=0;i<nEndPos.length-1;i++) uw!|G> { "S:N-Tf%U nEndPos = nStartPos[i+1]; 8A .7=C' z } 'wrpW# nEndPos[nEndPos.length-1] = nFileLength; tqCg<NH.!m } [@Y q^.6t } C6~dN&q /p0LtUMu us%RQ8=k //启动子线程 zQ}N
mlk fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; CaBS0'
n for(int i=0;i<nStartPos.length;i++) %LHV 0u { rbbuSI fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [i7)E]*oTA siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^;Q
pE nStartPos,nEndPos,i); H~]o]uAi" Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); qhtAtP>i" fileSplitterFetch.start(); {W<-f? } jqWvLBU! // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^6>|! siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =osw3"ng // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", :j<JZs>`R nEndPos = " + nFileLength); ZiYzsn // fileSplitterFetch[nPos.length-1].start(); 0\@|M @X= C/Bx_j(( ?
M_SNv //等待子线程结束 ZS]f+}0/} //int count = 0; `r(J6,O //是否结束while循环 /ASI0h boolean breakWhile = false; P'9io!Z-s 3G|fo4g Y26l,XIV while(!bStop) `0|&T;7 { L$Ar]O) write_nPos(); J6D$ i+ Utility.sleep(500); Ilb
|:x"L breakWhile = true; N06O.bji agT[y/gb e~]e9-L>I for(int i=0;i<nStartPos.length;i++) }yDq\5s
Q[ { v:1Vli. if(!fileSplitterFetch.bDownOver) 9mphj)`d;# { _C=[bI@ breakWhile = false; >0#q!H,X break; arVf"3a } JBAK*g } XYF~Q9~ if(breakWhile) VQMd[/ break; |o=ST
t`t:qko 5XO'OSdYq //count++; yc=#Jn?S //if(count>4) q<[ke
// siteStop(); }IkEyJsk } h_GBx|c W;]UP$5l ./ y[<e System.err.println("文件下载结束!"); ]V^.!=gh$ } 6v O)s!b catch(Exception e){e.printStackTrace ();} 6-14Htsk6 } 4Olv8nOe< aw%vu )"jn{%/t //获得文件长度 ]{+M>i[ public long getFileSize() [k7N+W8 { fUKdC\WL int nFileLength = -1; LY:?OGh try{ ?mfWm{QTt URL url = new URL(siteInfoBean.getSSiteURL()); 8!Mzr1: HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,xe@G)a httpConnection.setRequestProperty("User-Agent","NetFox"); %aE7id>v6 (`.qG
&6p G:C6`uiy` int responseCode=httpConnection.getResponseCode(); <&EO=A if(responseCode>=400) "|r^l { s1 ^mk] processErrorCode(responseCode); ! vVjZ return -2; //-2 represent access is error p2DNbY\] } as|c`4r\O ;6
6_G Sjz }rA+W-7 String sHeader; mYOdBd )LrCoI =| ( WtE`f;Q for(int i=1;;i++) .P:f { EJ;0ypbG //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); n.6
0$kR` //Utility.log(in.readLine()); U2>dwn sHeader=httpConnection.getHeaderFieldKey(i); Fif^V if(sHeader!=null) h)l&K%4; { qb&NS4# if(sHeader.equals("Content-Length")) eTRx 6Fri( { <Bb<?7q$ld nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); n5*{hi break; Fp6[W5>(- } +'Y(V& } +;wqX]SD & else =
EChH@3 break; %OTA5 } 'Kzr-)JS } SAE'?_ catch(IOException e){e.printStackTrace ();} cvXI]+`<3\ catch(Exception e){e.printStackTrace ();} +s(IQt Q'Kik5I dIfs8%kl Utility.log(nFileLength); 6|>\&Y!Q 9H, &nET &G@-yQ return nFileLength; Kg TGxCH } G<^]0`"+)t :UDn^(# 0B$7S,2 //保存下载信息(文件指针位置) ~UJu
@M private void write_nPos() <,4R2' { vXM/nw|5 try{ fov=Yd! output = new DataOutputStream(new FileOutputStream(tmpFile)); +x9"#0|k; output.writeInt(nStartPos.length); Q#ZD&RZ9. for(int i=0;i<nStartPos.length;i++) yK%GsCJd: { <X I35\^ // output.writeLong(nPos); 4>"cc@8&~ output.writeLong(fileSplitterFetch.nStartPos); 4lh
output.writeLong(fileSplitterFetch.nEndPos); p-'6_\F.Ke } q4.dLU,1 output.close(); 'f?&EsIV? } eFj6p< catch(IOException e){e.printStackTrace ();} _z(5e catch(Exception e){e.printStackTrace ();} Ad`[Rt']kI } B`?N0t%X .xLF}{u C=dx4U~
//读取保存的下载信息(文件指针位置) *n*N|6+ private void read_nPos() PZ!dn%4jy { yhtvr5z1 try{ <`p75B DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); u_6BHsU int nCount = input.readInt(); ueE?"Hk nStartPos = new long[nCount]; 4/`h@]8P nEndPos = new long[nCount]; A M1C
$ for(int i=0;i<nStartPos.length;i++) 4I#eC#" { mj(&`HRs4 nStartPos = input.readLong(); Mi/ &$"= nEndPos = input.readLong(); ]Ic?:lKN } V^`?8P8d input.close(); 4$?wD < } |:(23O catch(IOException e){e.printStackTrace ();} :B*vkwT catch(Exception e){e.printStackTrace ();} =(|xU?OL } C7jc 6(>m JwI`"$>w ;la#Vf:] private void processErrorCode(int nErrorCode) s7.p$r { FfYd+]+? System.err.println("Error Code : " + nErrorCode); E &];>3C } s=nVoc{Yt ,h@R' f! 0Y6q$h>4 //停止文件下载 gP%|:" public void siteStop() znQ'm^ h { `j}_BW_ bStop = true; _Vo)<--+I for(int i=0;i<nStartPos.length;i++) 'Wf?elB+ fileSplitterFetch.splitterStop(); 1A?\BJ" 5U)ab3: }#ep}h
} PHRGhKJW}) } 9b" 9m*gC //负责部分文件的抓取 `s>UU- 9 **FileSplitterFetch.java 4{*tn"y */ |ilv|U V package NetFox; XJ:>UNf5; OB I+<2`Oc 0~Iu7mPY import java.io.*; P>{US1t import java.net.*; J+}+"h~. {ywXz|TP (@KoqwVWc public class FileSplitterFetch extends Thread { |%'6f}fnE "+n4 c' _}I(U?Q-C String sURL; //File URL H:q )^$s long nStartPos; //File Snippet Start Position a@fE46o6< long nEndPos; //File Snippet End Position z29qARiX int nThreadID; //Thread's ID pK6e/eC boolean bDownOver = false; //Downing is over m feMmKFu\ boolean bStop = false; //Stop identical HBh` 2Q FileAccessI fileAccessI = null; //File Access interface ggm2%|?X " K 8&{= e}'#Xv public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ^])e[RN7?n { zd*3R+>U'> this.sURL = sURL; $N}/1R^?r this.nStartPos = nStart; tjZ \h= this.nEndPos = nEnd; i<4>\nc nThreadID = id; 9^ >M>f" fileAccessI = new FileAccessI(sName,nStartPos);//定位 :M22P`: } fJ)N:q` fg9?3x
Z
JJ/1daj public void run() ,&.W6sW { [F/^J|VMV while(nStartPos < nEndPos && !bStop) ;dqk@@O"( { J Q)4}t JkSdLj yaH
Trh% try{ >aEL;V=}P URL url = new URL(sURL); G3RrjWtO HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); dSOlD/c
httpConnection.setRequestProperty("User-Agent","NetFox"); 6X@mPj[/ String sProperty = "bytes="+nStartPos+"-"; 10C 2= httpConnection.setRequestProperty("RANGE",sProperty); ;YK!EMM4!h Utility.log(sProperty); Aautih@LX Q'Jv}'eK_ Ni2]6U InputStream input = httpConnection.getInputStream(); 9z5"y|$ //logResponseHead(httpConnection); ,c4c@|Bh? "El^38Ho G1kaF/`O byte[] b = new byte[1024]; 8{R_6BS int nRead; Qs|OG while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) )\{'fF { IK*oFo{C=K nStartPos += fileAccessI.write(b,0,nRead); m"lE&AM64p //if(nThreadID == 1) UF@IBb}0 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #*!+b } t*{,Gk ![^EsgEB* %ZujCZn Utility.log("Thread " + nThreadID + " is over!"); _9D|u<D bDownOver = true; #|qm!aGs //nPos = fileAccessI.write (b,0,nRead); z^4KU\/JK } FE/$(7rM catch(Exception e){e.printStackTrace ();} zuUT S[ } i]it5 } <=q*N;=T, puFXPw.3 +$>N]1 //打印回应的头信息 G1}~.%J public void logResponseHead(HttpURLConnection con) ?VFM]hO { w[
Axs8N' for(int i=1;;i++) ,LhEshf { -#hK|1] String header=con.getHeaderFieldKey(i); Q]< (bD.7 if(header!=null) +"'F Be //responseHeaders.put(header,httpConnection.getHeaderField(header)); y^2#9\}K Utility.log(header+" : "+con.getHeaderField(header)); tf4*R_6;1$ else ecn}iN break; :/+>e
IE } 2
9q?$V( } >&bv\R/ Rr%tbt.sE 82lr4 public void splitterStop() \X&]FZ(* { @u,+F0Yd bStop = true; KwS`3 6: } zQ ,f5x 2=>*O e#tIk;9Xz } egfi;8]E Osnyd+dJY E]NY
(1 /* GGH;Z WSe **FileAccess.java 8KFj<N>' *//文件访问(定位,写) hQXxG/yFm package NetFox; P3G:th@j= import java.io.*; aSUsyOe l1&5uwuF DL,[k
( public class FileAccessI implements Serializable{ |VK:2p^ u |V lMmaz //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 8=:A/47=J RandomAccessFile oSavedFile; AWO0NWTB long nPos; PC|'yAN:
C5Xof|#p| h%'
N hV public FileAccessI() throws IOException ?4,@,
ae& { sH%&+4!3 this("",0); s}wO7Df=+ } :AZp} $57\u/(
TZ'aNcGg public FileAccessI(String sName,long nPos) throws IOException T)8p:}P! { ' PELf
P8 oSavedFile = new RandomAccessFile(sName,"rw"); >)LAjwhBp this.nPos = nPos; u*hH} oSavedFile.seek(nPos); d<#p %$A4 } QO2Ut!Y 0C]4~F x~ o5P&JBX< public synchronized int write(byte[] b,int nStart,int nLen) 3Y`>6A= { zO%w_7w int n = -1; :<|Z.4}kJb try{ [UoqIU oSavedFile.write(b,nStart,nLen); Rs2-94$!5 n = nLen; M+0x;53nz } wazP,9W? catch(IOException e) Wm(:P { 6+iK!&+= e.printStackTrace (); n'yl)HA~>` } #7o0dE;Kg9 L?HF'5o `_GO=QQ return n;
YZ<
NP } 7aQn; zrrz<dW :9`qogF> } 4`s)ue `y2ljIWJ \#++s&06 /* 3w6&&R9 **SiteInfoBean.java X'@'/[? */ *Rq`*D>:U} package NetFox; 3T1P$E" m +C_*Vs@4 RyuEHpN} public class SiteInfoBean { t@)my[ ! 8"i/wMP] ENq"mwV| private String sSiteURL; //Site's URL r{S=Z~J private String sFilePath; //Saved File's Path =U NT.] private String sFileName; //Saved File's Name )pS8{c)E private int nSplitter; //Count of Splited Downloading File g2=}G <*0 \-OC|\{32 D"cKlp-I6| public SiteInfoBean() Z(HZB {//nSplitter的缺省值为5 D-pX<0-y //default value of nSplitter is 5 >!
oF0R_< this("","","",5); cz#_<8'N } Fj^AWv^/ lUHtjr vL$|9|W( public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter)
%}h`+L { "y$ qrN- sSiteURL= sURL; ^wJEfac sFilePath = sPath; )|RZa|`-G sFileName = sName; f&c]LH_ this.nSplitter = nSpiltter; vU}: U)S $ 6!iBX@ `VZZ^K9zR } C`0%C7 |{f~Ks% VjB*{, public String getSSiteURL() #h N.=~ { .!yq@Q|=u return sSiteURL; 4fty~0i=z } DWrbp ]_u`EvEx6 Fg=v6j4W public void setSSiteURL(String value) o@3B(j;J` { /UHp [yod sSiteURL = value; eu9w|g } Rg&19}BU -NzTqLBn ZMdW2_*F public String getSFilePath() SA+d&H}Fc { _CE9B e\ return sFilePath; M/#U2!iFk } &z>q#'X;. O>AFF@= Pq?*C;D public void setSFilePath(String value) v9rVpYc" { Q#pnj thM sFilePath = value; h<% U["
} dIJGB== Gw{+xz KJ C3}Aq8$6 public String getSFileName() Dtt-|_EMS { X*O9JGh return sFileName; N09KVz2Q } >vVw!.fJ -:SIS`0s El
(/em public void setSFileName(String value) 8l23%iWxe { JZ=5Bpw sFileName = value; {ma;G[! } GV8)Kor% kA^A mfba a,n93-m(m public int getNSplitter() j Nc<~{/ { GNU;jSh5 return nSplitter; $.:3$et@/ } sPCMckt |>2:eH )gXTRkmw public void setNSplitter(int nCount) _~A~+S} { DYRE1! nSplitter = nCount; A1-qtAO] } ZEGd4_ux } /{X_
.fv<v 85z;Zt0{ cZi[(K /* w>vH8f **Utility.java KlUqoJ;" */ d#\W hRE package NetFox; "2;N2=~7 x=,8[W#XT 0H[L S public class Utility { T~J?AKx ]l[2hy=
cV ?9e] public Utility() }bMWTT { 2xTT)9Tq* IN^_BKQt V@Wcb$mgk } uV~e|X
"9s :woa&(wN;1 //线程睡眠 _M5Xk? e= public static void sleep(int nSecond) ;|TT(P:d { K@r*;T try{
%+wF" Thread.sleep(nSecond); hhmGv9P } 2-v\3voN catch(Exception e) RH1uVdJ1 { YwAnqAg e.printStackTrace (); kon=il<@ } Ei~f`{i } QlD6i-a 7lU.Nit //日志 ow.j+<M public static void log(String sMsg) oT3Y!Y3=< { ` X}85 System.err.println(sMsg); / Z!i;@Wf } o:UXPAj /2@["*^$ |4Ha?W public static void log(int sMsg) &71e5<(dG { (F8AL6 System.err.println(sMsg); {oWsh)[x2 } c_1/W{ } sX:lE^)-z XnXb&@Y !Iq{ 5: /* Wsm`YLYkt! **TestMethod.java bGv4.:) */ p4>,Fwy2 package NetFox; Qb`C)Nh: -3hCiKq Hr
}k5' public class TestMethod { ow.6!tl0=h m mw-a0 Q6^x8 public TestMethod() >n!ni( { ///xx/weblogic60b2_win.exe ~HDdO3 try{ Np)aS[9W SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); dWR1cvB(wY //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); HomN/wKh SiteFileFetch fileFetch = new SiteFileFetch(bean); i&K |