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/* uE<8L(*B **SiteFileFetch.java #C~ </R% */ K&zW+C b package NetFox; 1uppE| import java.io.*; Xs# _AX import java.net.*; T?QW$cU!e: jm@,Ihz=wI G.^)5!By public class SiteFileFetch extends Thread { 5ba e- P3n#s2o6y 0kNKt(_ SiteInfoBean siteInfoBean = null; //文件信息Bean NbTaI{r long[] nStartPos; //开始位置 /qMnIo
long[] nEndPos; //结束位置 9_nbMs FileSplitterFetch[] fileSplitterFetch; //子线程对象 ?{jey_]M long nFileLength; //文件长度 /zb/am1# boolean bFirst = true; //是否第一次取文件 ,Q3OQ[Nmh boolean bStop = false; //停止标志 UCK;?] File tmpFile; //文件下载的临时信息 =[&+R9s DataOutputStream output; //输出到文件的输出流 o ABrhK SDV#p];u //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) F_9
4k public SiteFileFetch(SiteInfoBean bean) throws IOException U#]J5'i { g1}:;VG= siteInfoBean = bean; EI7n|X
a1q //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ]z5hTY tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); JqZt1um if(tmpFile.exists ()) 'S9o!hb'@ { t72u%M6 bFirst = false; -CuuO=h read_nPos(); 71Za!3+ } sNcU>qjj6 else Q{?\qCrrYl { ygH )U. nStartPos = new long[bean.getNSplitter()]; 8h }a:/ nEndPos = new long[bean.getNSplitter()]; A%?c1`ZxF } s~2o<# sve} ent D!!
B4zt ?bt;i>O\ } H#D:'B j29 2>o^@4PnZ R9 Ab.t public void run() ZS4dW_*[ { Q~qM;l\i //获得文件长度 1.k=ji$D0 //分割文件 R!QR@*N //实例FileSplitterFetch dsx<ZwZN> //启动FileSplitterFetch线程 ?d%{- //等待子线程返回 M>Tg$^lm try{
]&"ii if(bFirst) %J9u?-~ { #n{4f1TZ nFileLength = getFileSize(); "_\"S if(nFileLength == -1) pZopdEFDK| { _AX,}9 System.err.println("File Length is not known!"); Hzm_o>^KC } I:/|{:5 else if(nFileLength == -2) `ovMfL.u { ~cSXBc,+ System.err.println("File is not access!"); \A011R& } }|2A6^FH. else &'&)E(( { |v8hg])I+ for(int i=0;i<nStartPos.length;i++) }q]*aADe { J.XhP_aT nStartPos = (long)(i*(nFileLength/nStartPos.length)); 4gC(zJ } Z8FgxR for(int i=0;i<nEndPos.length-1;i++) Vm\zLWNB { poW%F zj nEndPos = nStartPos[i+1]; \By_mw } 2^
]^Yc nEndPos[nEndPos.length-1] = nFileLength; ,'HjL:r } c`\/] } p *42
@1, M>m!\bb%. EK=0oy[ //启动子线程 Z;a)P.l.> fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9%|skTgIqH for(int i=0;i<nStartPos.length;i++) Qx,#Hj { Cy uRj[;B fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "Zhh>cz siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), rZpsC}C' nStartPos,nEndPos,i); sV2D:%\K: Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !9NF@e'&! fileSplitterFetch.start(); frPQi{u$ } $Ugc:L<h+ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *9r(lmrfj siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); N[3Y~HX!q // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", N}%AUm/L nEndPos = " + nFileLength); ,~38IIS>_ // fileSplitterFetch[nPos.length-1].start(); 9y&;6V.' Ewr2popK H
$Az,-P //等待子线程结束 Cq/u$G //int count = 0; WgR%mm^ //是否结束while循环 de2G"'F boolean breakWhile = false; iOEBjj;C !y~nsy:&7x IFew3!{\ while(!bStop) 9-{ +U,3) { dl8f]y#Q write_nPos(); 6?%$e$s Utility.sleep(500); ^.)0O3oC breakWhile = true; |-{e!& hy;V~J# BaI-ve for(int i=0;i<nStartPos.length;i++) Hs8JJGXWB { mD% qDKI if(!fileSplitterFetch.bDownOver) c-&Q_lB { hM!g6\ w breakWhile = false; 6l2O>V break; *2-b&PQR{ } 9v;[T%% } rp<~=X if(breakWhile) (-0d@eqw break; e<=Nd,v4; `u_MdB}<x; CfS;F //count++; OhN2FkxL //if(count>4) g}Lm;gs!> // siteStop(); >r(`4M: } g.!k>_g` 0Cf'\2
Q.jThP`p System.err.println("文件下载结束!"); Z-4/xi7 } zBq&/? catch(Exception e){e.printStackTrace ();} J9tV|0 } #+_=(J ct=K.m@E%X J,:;\Xhl //获得文件长度 !PeSnO public long getFileSize() 2{BS `f { gzvgXZ1q" int nFileLength = -1; vpT\CjXHZ try{ <3j`Z1J URL url = new URL(siteInfoBean.getSSiteURL()); wE<r' HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `5(F'o httpConnection.setRequestProperty("User-Agent","NetFox"); 3:#6/@wQ C .B=E"e e, 2/3jO int responseCode=httpConnection.getResponseCode(); x%ccNP0 if(responseCode>=400) U}Puq5[ ? { n,s7!z/ processErrorCode(responseCode); :|ahu return -2; //-2 represent access is error FAc^[~E } "Vl4=W)u =E!Y f#p+q * Wp?0CP String sHeader; stW
G`>X hP.Km%C)0n h0dZr-c for(int i=1;;i++) e9/Mjq\ { fdwP@6eh //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ] `q]n //Utility.log(in.readLine()); m`$Q/SyvG sHeader=httpConnection.getHeaderFieldKey(i); ]2|fc5G' if(sHeader!=null) \k"Ct zoX { !kb:g]X if(sHeader.equals("Content-Length")) @'M"c
q { \ %MsG nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 2cIbX break; >O
rIY } kQd|qZ=:w } ;P;c!}:\b else ]s)Y">6 break; uH'? Ikx" } UA~ 4O Q] } %-K5sIz catch(IOException e){e.printStackTrace ();} -$g~,dIwj catch(Exception e){e.printStackTrace ();} /|}yf/^9X :HY =^$\ b$*2bSdv0< Utility.log(nFileLength); ae@!M ;;Z'd@ kF,ME5% return nFileLength; 6`7bk35B } '
i5KRFy- 's5rl
$X/'BCb //保存下载信息(文件指针位置) 7 j=KiiI private void write_nPos() *
]bB7 { 1t^9.!$@y try{ ln8NcAEx output = new DataOutputStream(new FileOutputStream(tmpFile)); (>x05nh output.writeInt(nStartPos.length); I''n1v?N for(int i=0;i<nStartPos.length;i++) qAbmQ{|w { z^&$6c_ // output.writeLong(nPos); &s?uMWR output.writeLong(fileSplitterFetch.nStartPos); ?r8hl.Z> output.writeLong(fileSplitterFetch.nEndPos); 0pEM0M } tH
*| output.close(); S|LY U!IWZ } ^_P?EJ,)` catch(IOException e){e.printStackTrace ();} cRbA+0m> catch(Exception e){e.printStackTrace ();} N#e9w3Rli } 9Sd?,z tAJ}36aG ^QJJ2 jZ //读取保存的下载信息(文件指针位置) +s8R]3NJ_H private void read_nPos() Xfqin4/jC { 3^y<Db try{ 2@2d
| DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); D g0rVV6c int nCount = input.readInt(); cYC^;,C &| nStartPos = new long[nCount]; MOCcp s* nEndPos = new long[nCount]; 0wV9Trp for(int i=0;i<nStartPos.length;i++) g%[:wjV; { /w5*R5B{ nStartPos = input.readLong(); Qb/:E}h]$ nEndPos = input.readLong(); 8uH8) } T=M##`jP% input.close(); CZeZk } AgSAjBP catch(IOException e){e.printStackTrace ();} 62 _k`)k catch(Exception e){e.printStackTrace ();} =*lBJ-L } CyYr5 Dz S1y6G/e9 Ny/eYF# private void processErrorCode(int nErrorCode) v3M$UiN,: { 2YW;=n System.err.println("Error Code : " + nErrorCode); y1PyH } G'-#99wv. HZWt>f D^.
c: //停止文件下载 a*.#Zgy:lK public void siteStop() 7[qL~BT+ { qA`@~\qh" bStop = true; \6?a for(int i=0;i<nStartPos.length;i++) L;j++^p fileSplitterFetch.splitterStop(); L2EQ 9i'[ C5TV}Bq\ '&Y_,-i } c$&({Z{1 } YOGj__: //负责部分文件的抓取 0\ (:y^X **FileSplitterFetch.java Gvh"3|u?z */ /P TRe5-7 package NetFox; W9tZX5V1 Mkk.8AjC| L_vl%ii- import java.io.*; m=^]93+ import java.net.*; $,, PF/N8c F5/,S Bh cp=# public class FileSplitterFetch extends Thread { ZnI15bsDx id5`YA$ gz[3 xH~ String sURL; //File URL J-dB long nStartPos; //File Snippet Start Position g([:"y? long nEndPos; //File Snippet End Position !\BZ_guz int nThreadID; //Thread's ID YJ"D"QD boolean bDownOver = false; //Downing is over JVy|SA&R boolean bStop = false; //Stop identical 0<~~0US FileAccessI fileAccessI = null; //File Access interface ?-mOAHW0q \DZ.#=d [NO4Wzc public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException r=Lgh#9S { U-fxlg|-C this.sURL = sURL; _r\M}lDh* this.nStartPos = nStart; QNU~G3 this.nEndPos = nEnd; Sm4BZF~!B nThreadID = id; ]gcOMC fileAccessI = new FileAccessI(sName,nStartPos);//定位 \2a;z<( } 8/dMvAB1So s[0` _Wg}#r public void run() 4^2>KC_ { Q9O_>mZy while(nStartPos < nEndPos && !bStop) lm;hW&O9 { Po@;PR= =r ^_D= |R@T`dW try{ U[?_|=~7 URL url = new URL(sURL); h^tCF=S HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DWKQ>X6 httpConnection.setRequestProperty("User-Agent","NetFox"); *1`X} String sProperty = "bytes="+nStartPos+"-"; b1 w@toc httpConnection.setRequestProperty("RANGE",sProperty); 1s=Q~*f~d Utility.log(sProperty); G)}[!'<rR jD9u(qAlH Y&O2;q/B InputStream input = httpConnection.getInputStream(); /^nIOAeE //logResponseHead(httpConnection); OR~ui[w fy"}#
2 C){Q;`M-< byte[] b = new byte[1024]; Sf*v#? int nRead; 13#ff while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) MukJ^h*V { ZuGd{p$ nStartPos += fileAccessI.write(b,0,nRead); %hYgG;22 //if(nThreadID == 1) '_.qhsS // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); pz['o } <F0^+Pf/ Vl5>o$G|<. 70 R6: Utility.log("Thread " + nThreadID + " is over!"); =+j3E<w bDownOver = true; ;HXk'xN //nPos = fileAccessI.write (b,0,nRead); 0!dNW,NfJ } o6O-\d7^M catch(Exception e){e.printStackTrace ();} k"i3$^v8 } \vT~2Y(K } z&d.YO_W iVZ}+Ct<" xE?KJ //打印回应的头信息 zs#-E_^%M public void logResponseHead(HttpURLConnection con) e3;D1@ { \Yr*x7! for(int i=1;;i++) d%'#-w' { B0Wf$
s^7t String header=con.getHeaderFieldKey(i); v~L\[&|_ if(header!=null)
FJ~d&L\l //responseHeaders.put(header,httpConnection.getHeaderField(header)); /y-D_ Utility.log(header+" : "+con.getHeaderField(header)); I{(!h90 else lgU!D |v break; `3T=z{HR9g } *GE6zGdN } }UW*[dCf>C ?{f6su@rW o1(;"5MM public void splitterStop() Wds>'zzS { c 1F^Gj!8 bStop = true; K& ^qn& } lUEbxN Nz`8)Le "crR{OjE" } T/P\j0hR q\o#<'F1J /OztkThx= /* iiq
`:G
**FileAccess.java :wIA.1bK} *//文件访问(定位,写) MZh.Xo package NetFox; 1 gjaTPwY import java.io.*; %@a;q?/?Nd ,ZJ}X 9$< ~&)\8@2 public class FileAccessI implements Serializable{ Ln,<|,fZN X^eyrqv //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Ljz)%y[s RandomAccessFile oSavedFile; iw,uwh|L
long nPos; PkDt-]G. 'W_NRt: nb/q!8 public FileAccessI() throws IOException #0<pRDXj { 2PSExK57 this("",0); j
"<?9/r } &EV%g6 sX~E ~$_g QZvQ8 public FileAccessI(String sName,long nPos) throws IOException _9lMa7i { ^\gb|LEnK oSavedFile = new RandomAccessFile(sName,"rw"); Cu#n5SF* this.nPos = nPos; ?{TWsuP7 oSavedFile.seek(nPos); \ 2y/: } ,V9qiu=m
uZn_*_J! j_90iP^5: public synchronized int write(byte[] b,int nStart,int nLen) Zb1GR5MB`k { EX{%CPp7} int n = -1; (}X5*BB& try{ !u]@Ru34 oSavedFile.write(b,nStart,nLen); vOlfyH> n = nLen; 2K>1,[ C'Z } Ql5bjlQdO catch(IOException e) o
i'iZX { ),N,!15j, e.printStackTrace (); %W D^0U| } Z]b;%:>= ^oPFLez56 _=I1 return n; 'hr_g* i } M%ecWr!tj !8UIyw +C!GV.q[ } QYo04`Rl [&99#7B x@43ZH_ /* y$7Ys:R~ **SiteInfoBean.java %_s)Gw&sq */ <MG&3L.[ package NetFox; kNWTM%u9 'M6+(`x bI0xI[#Q public class SiteInfoBean { }F{s\qUt Ox J0." IWv5UmjN private String sSiteURL; //Site's URL #w|v.35%? private String sFilePath; //Saved File's Path )=GPhC/sw private String sFileName; //Saved File's Name #^VZJ:2=| private int nSplitter; //Count of Splited Downloading File @*vVc`; M2cGr ~vDa2D<9% public SiteInfoBean() {c)\}s(}F {//nSplitter的缺省值为5 V $I8iVGL //default value of nSplitter is 5 %(
7##f_ this("","","",5); 9oc_*V0< } If'2
m_ DQ+6VPc^o \l(J6Tu public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 8zeeC
eI U { >6Uc|D sSiteURL= sURL; L,A+" sFilePath = sPath; -'qVnu sFileName = sName; J(}PvkA this.nSplitter = nSpiltter; \VhG'd3k |qe;+)0>K _(g0$vRP~ } ~-vCY AmIW$(Ce E'4Psx9: = public String getSSiteURL() 4#>Z.sf { ?u:`?(\ return sSiteURL; L~/,;PHN } f$:Y'$Z1 5B)&;[ 39O rY public void setSSiteURL(String value) G8vDy1`q6 { G 3U[)(" sSiteURL = value; b%MZfaU } /v9qrZ$$ R/"f RgV3, z public String getSFilePath() bj@sci(1? { ^X{U7?x return sFilePath; `>UUdv{C } >z%YKdq }I
uqB*g[t }&/>v' G public void setSFilePath(String value) nxhlTf>3 { :y7K3:d3 sFilePath = value; P9
HKev?y } M7?ktK9`ma {E%c%zzQ IH=$
wc public String getSFileName() XcT!4xG0 { DqWy@7
a return sFileName; C~4SPCU } E0RqY3 {Ni]S$7 Ojz'p5d`> public void setSFileName(String value) 3m75mny { Nzgi)xX0HX sFileName = value; ?xv."I% } rK'Lvt@w KwHN c\\ kCD]& public int getNSplitter() #&)H&H} { pW.WJ`Rk return nSplitter; octQ[QXo# } 7~+Fec`Ut* mvH8hvD9 ?3K~4-!?/ public void setNSplitter(int nCount) $\*Z { glCpA$;VPu nSplitter = nCount; az![u) } }=v4(M `% } l4i51S" ppn 8 <QvVPE}z /* RuYIG?J=/ **Utility.java 67&IaDts */ I)1ih package NetFox; Mj1f;$ :(ql=+vDb4 D$4GNeB+# public class Utility { 'z,kxra|n \5&Mg81 R98YGW_
dT public Utility() ^@8XJ[C,_ { `},:dDHI :k?`gm$ ;/kd.Q } @k;65'"Q VD&wO'U //线程睡眠 @yb'h`f] public static void sleep(int nSecond) M2ex
3m { G{6@]72 try{ )jl@hnA Thread.sleep(nSecond); TYD( 6N } !m:WoQ/ catch(Exception e) ;"IWm<]h;- { Uv[a
~' e.printStackTrace (); ($`IHKF1.l } _Ycz@Jn } ;taZixOH 1@{ov!YB] //日志 d+)L K~ public static void log(String sMsg) ~l:Cj*6x8 { ssQ1u.x9 System.err.println(sMsg); 3<<wHK;) } 9^g8VlQdT sx azl] !VIxEu^ke public static void log(int sMsg) }iDRlE, { C ibfuR System.err.println(sMsg); Dti-*LB1 } |)To 0Z } MkFWZ9c3 3HXeBW V<|N}8{Z2a /* pSC{0Y$g **TestMethod.java ~rO&Y{aG# */ r6\g#} package NetFox; DZL(G [ 2|\mBP`ok I`XOvSO public class TestMethod { -"ZNkC= V^FM-bg%9 )G/=3;! public TestMethod() ESoqmCJjb: { ///xx/weblogic60b2_win.exe i#YDdz try{ <H]PP6_g: SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); fhZwYx&t //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); \mu';[gLd SiteFileFetch fileFetch = new SiteFileFetch(bean); vM5I2C3_>! fileFetch.start(); p&Nav,9x } +&"W:Le: catch(Exception e){e.printStackTrace ();} &u|t{C#0 =.S2gO > 2u_=i$xW } gYbvCs8O! _5n2'\] H` FEhBhv|m public static void main(String[] args) rMWvW(@@D { o/,%rA4 new TestMethod(); 74
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