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/* 5? `*i" **SiteFileFetch.java =MqefV;- */ b;O|-2AR package NetFox; T.zUerbO import java.io.*; %Ln7{w import java.net.*; Y|=/*?o} tF<|Eja* |8b*BnS public class SiteFileFetch extends Thread { e8@@Pi<sB h@"dpmpe dkC[Jt SiteInfoBean siteInfoBean = null; //文件信息Bean do9@6[{Sv long[] nStartPos; //开始位置 {%5tqF long[] nEndPos; //结束位置 Fss7xP' FileSplitterFetch[] fileSplitterFetch; //子线程对象 u"\HBbBx long nFileLength; //文件长度 ;w,g|=RQ boolean bFirst = true; //是否第一次取文件 X#mp pMU boolean bStop = false; //停止标志 daIt `} s File tmpFile; //文件下载的临时信息 lk6*?EJ DataOutputStream output; //输出到文件的输出流 SPxgIP;IR NGlX%j4j //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ]3C&l+m$ot public SiteFileFetch(SiteInfoBean bean) throws IOException YN
~7 nOw { eM*@zo<- siteInfoBean = bean; s:UQ~p}"S //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); V Z[[zYe tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); uJ4RjLM` if(tmpFile.exists ()) 99}n%(V { f_r1(o5:Y bFirst = false; a(Bo.T<2@ read_nPos(); Z;aQ/n[` } ;Bo{.916 else I%43rdoPe { tdn[]|= nStartPos = new long[bean.getNSplitter()]; ^<R*7mB* nEndPos = new long[bean.getNSplitter()]; !+4}x;!8 } y8Bi5Ae,+1 \$2E Kv[,!P"Y gg(^:`+ } *BYSfcX6 /s>ZT8vaAs Eoug/we public void run() ee]PFW28 { MX 2UYZ& //获得文件长度 'Lft\.C //分割文件 EnJAHgRV;e //实例FileSplitterFetch jZcjiOX //启动FileSplitterFetch线程 4Wq{ch //等待子线程返回 '!64_OMj' try{ :Xv3< rS< if(bFirst) zm}4=Kz} { -Rhxib|< nFileLength = getFileSize(); 9~DoF]TM if(nFileLength == -1) twqjaFA> { ik77i?Hg System.err.println("File Length is not known!"); ul+
+h4N } &%`IPhbT else if(nFileLength == -2) IBY3QG { %b2.JGBqJ System.err.println("File is not access!"); kDJ5x8Q# } lcij}-z:%e else Xi_>hL+R( { |<\LB for(int i=0;i<nStartPos.length;i++) G6xdGUM { S=^yJ6xJ nStartPos = (long)(i*(nFileLength/nStartPos.length)); .
zvF!!z } o;mXk2 for(int i=0;i<nEndPos.length-1;i++) zr?%k]A%UO { OC9_EP\" nEndPos = nStartPos[i+1]; _d&zHlc_ } PIn' tV nEndPos[nEndPos.length-1] = nFileLength; nbMnqkNb } '5KgRK" } 5.#r\' Z# B=#rp*vwL <0vQHND,3 //启动子线程 zTBr<: fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; q(e&{pbM) for(int i=0;i<nStartPos.length;i++) ;RW!l pGjP { ~Rk%M$E9 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m,$oV?y>j siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), QP)-O*+AA nStartPos,nEndPos,i); xA#B1qbw Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #Oz<<G< fileSplitterFetch.start(); dl@ } {*As-Y:'F // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1?`,h6d*= siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =;0#F& // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", RS#)uC5/% nEndPos = " + nFileLength); mKtZ@r)u // fileSplitterFetch[nPos.length-1].start(); =-~82% K_oBSa` Xdsd5 UUM //等待子线程结束 R:x4j#( //int count = 0; %F9%t //是否结束while循环 "wmQ,= boolean breakWhile = false; }XWic88!~ .JZoZ.FAb .B{3=z^
while(!bStop) 'N)&;ADx-G { kYl$V= write_nPos(); ++F #Z(p Utility.sleep(500); R{\vOw:* breakWhile = true; :Sk0?WU U_m<W$"HF !m^;Apuy for(int i=0;i<nStartPos.length;i++) 1]aM)}, { mQtGE[ if(!fileSplitterFetch.bDownOver) }k.-xaj { LpeQx\ breakWhile = false; l|^p;z:d break; 9XX&~GW/ } BJ<hP9# } ,h5\vWZ if(breakWhile) o*eU0 break; }H!c9Y 4K[ E3aA a[]=*(AZI //count++; <s2IC_f<+ //if(count>4) m,,-rC // siteStop(); v#@"Evh7 } T|Sz~nO}f X,:^})] ]C3{ _?= System.err.println("文件下载结束!"); ]Vo;ZY_\ } OGh9^,v catch(Exception e){e.printStackTrace ();} 3haYb` } z4b2t} <w`
R; 21bvSK //获得文件长度 b4ZZyw public long getFileSize() R22YKXU { 0z #'=XWk int nFileLength = -1; t*m04* } try{ ?>cx;"xF URL url = new URL(siteInfoBean.getSSiteURL()); vP`Sz}FU HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); g&!UaJ[#9 httpConnection.setRequestProperty("User-Agent","NetFox"); zUXQl{ ^90';ACFy u)Y~+ [Q int responseCode=httpConnection.getResponseCode(); #3>o^cN~8k if(responseCode>=400) fz\C$[+u { f_Ma~'3 processErrorCode(responseCode); K'%2 'd return -2; //-2 represent access is error h:-ZXIv? } a\>+!Vq y$|%K3 C-E~z{ String sHeader; $nF|n+m !TvNT}4 Z g5M=$y/H for(int i=1;;i++) z/!LC;( { ^\
A[^' 9 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :+NZW9_ //Utility.log(in.readLine()); 3.@"GS#"[ sHeader=httpConnection.getHeaderFieldKey(i); rV84?75(Y if(sHeader!=null) a?jUm. { .DsdQ4Y if(sHeader.equals("Content-Length")) uzg(C#sp { \ne1Xu:hM nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); s|F}Abx,^ break; ?lq } 3}aKok"k } 2(LF @xb else WoM;) Q break; EyR~VKbJ' } Ln:6@Ok)5% } cq]JD6937 catch(IOException e){e.printStackTrace ();} Y`F) UwKK catch(Exception e){e.printStackTrace ();} [wU e"{ V=^B7a.;> G0#<SJ,) Utility.log(nFileLength); OT0%p) YP
E1s .3
>"qv return nFileLength; $7h]A$$Fv } -t]3 gCLb &~mJ
).* &Va="HNKt //保存下载信息(文件指针位置) :eIi^K z[ private void write_nPos() Fn>KdoByN { ]K?;XA3 dZ try{ Pi+pQFz5 output = new DataOutputStream(new FileOutputStream(tmpFile)); Y5c,O>T5Y output.writeInt(nStartPos.length); CvhVV"n for(int i=0;i<nStartPos.length;i++) QPX&P{!g { {W+IUvn // output.writeLong(nPos); ZnKjU ]m output.writeLong(fileSplitterFetch.nStartPos); p{
Xde output.writeLong(fileSplitterFetch.nEndPos); dx@|M{jz' } {FQ@eeU output.close(); {N3&JL5\"E } JDJ"D\85 catch(IOException e){e.printStackTrace ();} 3daI_Nx> catch(Exception e){e.printStackTrace ();} arIEd VfNa } 1=Z!ZY}}e 7s0\`eXo/ y'aK92pF: //读取保存的下载信息(文件指针位置) Brtsig,4 private void read_nPos() "(r%`.l=I { ;6eBfMhL try{ fB80&G9 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 6ao~f?JZ int nCount = input.readInt(); aFaioE#h( nStartPos = new long[nCount]; ]A;.}1' nEndPos = new long[nCount]; yky%+@2q for(int i=0;i<nStartPos.length;i++) lD^c_b { -MRX@ a^1 nStartPos = input.readLong(); 5JHWt<n{P nEndPos = input.readLong(); V/3@iOwD } h ;@c%Vm input.close(); qnCjNN
} Fw\g\ catch(IOException e){e.printStackTrace ();} \TZSn1isZX catch(Exception e){e.printStackTrace ();} e)= "Fq! } !&xci})7a qJ sH U9ZuD40\ private void processErrorCode(int nErrorCode) It7R}0Smg { tr5j<O System.err.println("Error Code : " + nErrorCode); SRtw } Jz}`-fU` uNkJe c]h@<wnv //停止文件下载 0SfW:3 public void siteStop() nY7gST { &wAVO_s bStop = true; Kt](| for(int i=0;i<nStartPos.length;i++) d~AL4~} fileSplitterFetch.splitterStop(); ^U5Qb"hz l\F71pwSI Nm
!~h|3 } [YP{%1*RM } [GPCd@ //负责部分文件的抓取 NVghkd **FileSplitterFetch.java CY*o"@-o5) */ -)Bvx>8fq- package NetFox; iO&*WIbg #i.,+Q ,PmUl= import java.io.*; Nc&J%a import java.net.*; (H5#r2h%Y ,{mv6?_ ufCpX>lNF public class FileSplitterFetch extends Thread { q}+zNeC _1Q6FI5iR =&6sU{j* String sURL; //File URL /o%VjP"< long nStartPos; //File Snippet Start Position obE8iG@H long nEndPos; //File Snippet End Position }zks@7kf int nThreadID; //Thread's ID @R}3f6@67 boolean bDownOver = false; //Downing is over |_+#&x boolean bStop = false; //Stop identical <#J5.I 1 FileAccessI fileAccessI = null; //File Access interface OLPY<ax $[}EV(#y PW|=IPS public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException k_{?{:X;y { Fsm6gE`|n this.sURL = sURL; Q^ZM| (s# this.nStartPos = nStart; ]Zt ]wnL+ this.nEndPos = nEnd; F)KR8( nThreadID = id; I 1n,c d[ fileAccessI = new FileAccessI(sName,nStartPos);//定位 (BFwE@1" } ^D5Jqh)
V*ao@;sD 76"4Q! public void run() DI8<0.L { `3i<jZMG while(nStartPos < nEndPos && !bStop) e@qH!.g) { 2,dWD<h p J_+n:_{ E_En"r)y try{ $,2T~1tE URL url = new URL(sURL); PcEE`. HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Yb-{+H8{J httpConnection.setRequestProperty("User-Agent","NetFox"); zPND$3&' String sProperty = "bytes="+nStartPos+"-"; SOq:!Qt httpConnection.setRequestProperty("RANGE",sProperty); b~}$Ch3ymW Utility.log(sProperty); |4g0@}nr+W $:%E<j4Dn }04mJY[ InputStream input = httpConnection.getInputStream(); JLnv O //logResponseHead(httpConnection); w8>h6x" ,5"(m?[m aUzCKX%>C byte[] b = new byte[1024]; oWL_Hh%-f` int nRead; u1L^INo/ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) H)i|?3Ip { "5Y6.$Cuf! nStartPos += fileAccessI.write(b,0,nRead); iX6>u4~( //if(nThreadID == 1) Vn4wk>b}$2 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =V]0G,,\ } 7dcR@v`c >>
"gb/x, \?>M?6D Utility.log("Thread " + nThreadID + " is over!"); +:uz=~mo` bDownOver = true; 'Zp{ //nPos = fileAccessI.write (b,0,nRead); i? ~-% } n'v\2(&uYN catch(Exception e){e.printStackTrace ();} /$CTz xd1 } ?/"|tuQMW } cd1G.10 R8k4?_W?T R__:~uv, //打印回应的头信息 _0v+'&bz public void logResponseHead(HttpURLConnection con) sde>LZet/ { }VZExqm) for(int i=1;;i++) itP`{[ { <M@-|K"Eb String header=con.getHeaderFieldKey(i); ey=KA t if(header!=null) N"G aQ //responseHeaders.put(header,httpConnection.getHeaderField(header)); q50F!yHC- Utility.log(header+" : "+con.getHeaderField(header)); 2^=.j2 else z'"7zLQ break; qEr?4h } \O;2^ } `,-mXxTNT =&} _bd/] /j$=?Rp public void splitterStop() D<;~eZ' { <;S$4tux bStop = true; ![^pAEgx } X n$ZA- R,G*]/r` :R,M Y"( } Ha `N nf/?7~3?[ }I&.xzJ /* ZrTB% **FileAccess.java X+aQ 7^"s *//文件访问(定位,写) = 'NV3by package NetFox; hr}f5Z)^v import java.io.*; ^;RK-) ]alc%(= cx$IWQf2 public class FileAccessI implements Serializable{ ]a4U\yr M_};J; //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 cdt9hH`Cd RandomAccessFile oSavedFile; l,7&
z long nPos; p0bWzIH ZOqS"3j! j x%=CEe?6 public FileAccessI() throws IOException FAEF { ]8\I{LR this("",0); 8u+kA
mI } N s +g9+<A g0tnt)] ?`piie9V public FileAccessI(String sName,long nPos) throws IOException YpDJ(61+ { z6iKIw
$ oSavedFile = new RandomAccessFile(sName,"rw"); 25)9R^ this.nPos = nPos; TC?B_;a oSavedFile.seek(nPos); P9bM+@5e } $V(]z`b& TU0-L35P1 D=-}&w_T" public synchronized int write(byte[] b,int nStart,int nLen) v.Ba { jW\:+Taq int n = -1; [yXmnrxA try{ HrBJi oSavedFile.write(b,nStart,nLen); E$)| Kv^ n = nLen; WR)=VE } ^)Hf% catch(IOException e) N&NBn( { }`B
.(3n e.printStackTrace (); ^HSxE } @.e X8~3= >ou=}/< ?{S>%P A_B return n; HY)xT$/J } <:v+<)K 8%7%[WC# &:&89<C' } ?bB>}:~j) *p}mn#ru- gF{ehU% /* ^3$l!>me **SiteInfoBean.java qH}8TC */ lGd'_~'= package NetFox; 1ML L OyZR&,q JN0h3nZ_ public class SiteInfoBean { +
Q-b} tK%ie\ N)X Tmh2v| private String sSiteURL; //Site's URL '47
b"uV private String sFilePath; //Saved File's Path !g|O.mt private String sFileName; //Saved File's Name
b/'bhE= private int nSplitter; //Count of Splited Downloading File d05xn7%!{ _Je4&KU }%_|k^t public SiteInfoBean() Zhq_ pus"a {//nSplitter的缺省值为5 $D^\[^S //default value of nSplitter is 5 P8d this("","","",5); +~^S'6yB } n[3z_QI ,9P-<P U**8^:*y#: public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) "6f`hy { +/ukS6>gr sSiteURL= sURL; {@InOo!4w] sFilePath = sPath; KZppQ0 sFileName = sName; ?"x4u#x this.nSplitter = nSpiltter; C}8#yAS9M "\b>JV5 RQ,#TbAe } D\Ak-$kJ^ :;+!ID_ \;{ ]YX public String getSSiteURL() t?GH
V3V { d51lTGH7Z return sSiteURL; <Vhd4c } G^c,i5}w v
Y[s#*+ jrib"Bh3, public void setSSiteURL(String value) \OwF!~& { 9M96$i`P sSiteURL = value; nGF
+a[Z } op6]"ZV-C ],]Rv#` fkxkf^g) public String getSFilePath() 1q}LO2 { >fBPVu\PA return sFilePath; OIblBQ! } Lw>B:3e [6!k:-t+ }t)+eSUA public void setSFilePath(String value) Fw<"]*iu { -b-a21,m> sFilePath = value; .zO^"mXjS } n7!T{+ge +A3/^C0 $J7V]c*-b public String getSFileName() ?2<)
Jw { mfraw2H return sFileName; $C[z]}iOi } X7*F~LFrj 46C%at
M0} ._}}@V_/ public void setSFileName(String value) u[GZ~L { WcN4ff- sFileName = value; :aNjh } -<g9) CV5 (p{X.X+ )d3
09O public int getNSplitter() ,?GwA@~$k: { `d_T3^ayu return nSplitter; T)! }Wvv } 'm`O34h 7<j!qWm0 Ic/hVKYG5 public void setNSplitter(int nCount) `cGks { I-#!mFl nSplitter = nCount; u+)!C*ho } mY 1l2 } TNu %_
34 EavBUX$O ?{J1&;j* /* +Br<;sW **Utility.java n_QuuUB */ TK5$-6k package NetFox; K$S0h-?9]O
M^kaik Za@\=}Tt public class Utility { f.g!~wGD Pp?P9s{ Q7+WV`& public Utility() 9wL2NC31Q { 7ZUN;mr 0F$|`v"0 | R,dsBd } PF4[;ES' Il=6t //线程睡眠 >{^_]phlb public static void sleep(int nSecond) #aqnj+ { / 4Q=%n try{ A[P7hMn Thread.sleep(nSecond); ^A ]4 } IjhRSrCv catch(Exception e) AH,?B*zGj { K'&,]r# e.printStackTrace (); xU\!UVQ/ } /E6)>y66 } UC&$8^ Q4mtfpiDx //日志 "5JMk
-2k public static void log(String sMsg) %`~4rf"7 { >\JPX System.err.println(sMsg); oIrc))j,$ } ckX8eg!f BFNO yv /qQx~doK public static void log(int sMsg) }cz58% { /IirTmFK System.err.println(sMsg); ZRhk2DA#FF } )=)N9C Ry } &^ERaPynd jnV#Q
; Gr({30"8 /* q~qz^E\T **TestMethod.java sD3Ts;k */ }%KQrlbHJl package NetFox; "|6(.S+o >D=X
Tgqqq T#&1q]P1F public class TestMethod { frbd{o #o&T$D5 P.(UbF d' public TestMethod() n l5+#e*\ { ///xx/weblogic60b2_win.exe m#h`iW try{ $I5|rB/4? SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); &Hw:65O //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ^aaj=p:cV SiteFileFetch fileFetch = new SiteFileFetch(bean);
4H;g"nWqO fileFetch.start(); -t_&H\_T } yc0
1\o catch(Exception e){e.printStackTrace ();} ^(Gl$GC$Mu -Ua5anzB WDNj7 } fTmJDUv+ r%: :q^b3 Xp;'Wa"@ public static void main(String[] args) 6~ET@"0uK { ,5 ,r. new TestMethod(); <,Gjo]z } %YxKWZ/? } u9_?c
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