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/* 7/X"z=Q^| **SiteFileFetch.java %xyX8c{sP */ h:Ndzp{ package NetFox; /=#~ import java.io.*; PI?j_8 import java.net.*; FFGqa& #G,XDW2"w g.#+z'l public class SiteFileFetch extends Thread { H.J5i~s
@#b0T:+v' gS"Q=ZK" SiteInfoBean siteInfoBean = null; //文件信息Bean r7!J&8;{K long[] nStartPos; //开始位置 YirC* long[] nEndPos; //结束位置 vh>{_
# FileSplitterFetch[] fileSplitterFetch; //子线程对象 <-jGqUN_I long nFileLength; //文件长度 U06o;s( boolean bFirst = true; //是否第一次取文件 -Ubj6 t_K boolean bStop = false; //停止标志 %bX0 mN File tmpFile; //文件下载的临时信息 m<3v)R[> DataOutputStream output; //输出到文件的输出流 ^,2c- "gNK>< //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) s"0b%0?A public SiteFileFetch(SiteInfoBean bean) throws IOException qq+MBW* { i&@,5/'-_O siteInfoBean = bean; t&814Uf&\ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); `:-J+<` tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 1}`LTPW9 if(tmpFile.exists ()) {B yn{?w { '%3{jc-} bFirst = false; ?SUQk55w read_nPos(); j/<??v4F4 } hD 46@ else J/4y|8T/y { J35l7HH nStartPos = new long[bean.getNSplitter()]; ^w6eWzI nEndPos = new long[bean.getNSplitter()]; d0C8*ifFO } .~dEUt/|) cq^sq1A: wt7.oKbW bBE^^9G=Z } GMFc K= T=?
bdIl Tj,Nmb>Q7' public void run() REx[`x,GUh { NFoZ4R1gy //获得文件长度 :2q
?>\ //分割文件 j3P RAe //实例FileSplitterFetch Rx.
rj~ //启动FileSplitterFetch线程 1e$[p[ //等待子线程返回 `QCD$= try{ mW$ot.I if(bFirst) q lY\*{x4 { 8D~Dd!~P nFileLength = getFileSize(); >7FSH"8[, if(nFileLength == -1) 4 ROWz { FYeEG System.err.println("File Length is not known!"); [u\CD sX } s4IKSX else if(nFileLength == -2) ~iT{8 { $wXih#7 System.err.println("File is not access!"); $PfV<Yj'B } U5wTGv4S| else cJ4S! { |7S:l9; for(int i=0;i<nStartPos.length;i++) V9$-twhu { 2TCRS#z nStartPos = (long)(i*(nFileLength/nStartPos.length)); 5k`e^ARf } )O-sWh4 for(int i=0;i<nEndPos.length-1;i++) (E]"Srwh { rH^/8|}&s nEndPos = nStartPos[i+1]; }moz9a } AuM:2N2 nEndPos[nEndPos.length-1] = nFileLength; lvig>0:M } QW:Z[?39^ } Pb=rFas*C ][N) 2_^M Q~CpP9% //启动子线程 ?ZM^%]/+ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; !Ba3`B5l for(int i=0;i<nStartPos.length;i++) ;op'V6iG { JbVi1?c fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Uc>LFX&
-B siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), YmA) @1@U nStartPos,nEndPos,i); a#6,#Q" Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); t;~-_{ fileSplitterFetch.start(); \Qb>: } _/8y1)I // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), vzQyE0T/ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Hm<M@M$aG // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", EsNk<Ra nEndPos = " + nFileLength); rGAFp,}-f // fileSplitterFetch[nPos.length-1].start(); N+[}Gb"8q >cSi/a,L +&zb^C`J //等待子线程结束 c[6 zX#{` //int count = 0; Y~}QJ+`? //是否结束while循环 .M`LUb"! boolean breakWhile = false; S@;&U1@h GZ}*r{ ^$ZI>L0+ while(!bStop) "&s9cO.H { -!JlM@ write_nPos(); [_h.1oZp~ Utility.sleep(500); FK?mS>G6 breakWhile = true; /:Rn"0 v^57j:sD V&$ J; for(int i=0;i<nStartPos.length;i++) t
PAt? { CD$u=E
] if(!fileSplitterFetch.bDownOver) /7S-|%1 { Rs^jk)Z:) breakWhile = false; "o~N42DLB% break; D'Jm!Ap } dW:w<{a!R } T;xHIg4 if(breakWhile) U=_~{[/ break; =t~+63) Kn3YI9 $&c<T4 $d //count++; $a)JCErN //if(count>4) -DbH6u3 // siteStop(); k,yc>3P;U } 3m?@7 F pXGK:ceFu _wIBm2UO System.err.println("文件下载结束!"); Y8{T.\%\+ } h0&>GY;i catch(Exception e){e.printStackTrace ();} f/$-Nl. } 00$ @0 `ja`#%^\u $4#=#aKW. //获得文件长度 mdmZ1:PBM public long getFileSize() a
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int nFileLength = -1; 8ItCfbqa6 try{ S&;T_^| URL url = new URL(siteInfoBean.getSSiteURL()); 8YT_DM5iI HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^59YfC<f httpConnection.setRequestProperty("User-Agent","NetFox"); `[g#Mxw &Sa_%:*D( tk]_QX
% int responseCode=httpConnection.getResponseCode(); qcpG}o+&D if(responseCode>=400) uM}dZp 1 { i`ZHjW~` processErrorCode(responseCode); '? !7 Be return -2; //-2 represent access is error !=k*hl0h } 6qmo
ZAg rTm>8et `CTkx?e[ String sHeader; ouu-wQ|(mM
0&SrKn x3p;H02i\ for(int i=1;;i++) OLd$oxKR { _dJVnC1 ! //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 0|wKR|zW //Utility.log(in.readLine()); af`f*{Co3 sHeader=httpConnection.getHeaderFieldKey(i); s$+: F$Y0 if(sHeader!=null) Sx4UaV~" { qQ?,|4)y if(sHeader.equals("Content-Length")) tSh}0N) { E-7a`S nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); B[U.CAUn break; $.x?in|_ } \CEnOq } L2V
$%*6 else X=!n,=xI break; c+G :@% } V+"*A } D/%b@Ls2ze catch(IOException e){e.printStackTrace ();} "YdDaj</ catch(Exception e){e.printStackTrace ();} ^w.(*; / xhVq VQW)qOR9 Utility.log(nFileLength); XQg%*Rw+t cO"Xg<#y ]@j"0F/` return nFileLength; ;^H+
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x;`) +h\W~muR //保存下载信息(文件指针位置) kAe-d private void write_nPos() f'?6D+Yw~ { 9 %.<V_$ try{ (HX [bG` output = new DataOutputStream(new FileOutputStream(tmpFile)); q.hc%s2? output.writeInt(nStartPos.length); I5<#SW\a? for(int i=0;i<nStartPos.length;i++) 6w`}+3 { (Q
p]0 // output.writeLong(nPos); FoelOq6 output.writeLong(fileSplitterFetch.nStartPos); \]e w@C output.writeLong(fileSplitterFetch.nEndPos); !kk %;XSZ } gm%bxr@X~ output.close(); />j+7ts } BNKo6:wy catch(IOException e){e.printStackTrace ();} N=?kEX
O catch(Exception e){e.printStackTrace ();} i!+3uHWu`) } "ih>T^| Ok{:QA~# _F$t#.o //读取保存的下载信息(文件指针位置) 3x;y}:wQa private void read_nPos() C9;X6 { ?}>Z_ (" try{ lO[jf6gB DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); OB
I8~k int nCount = input.readInt(); QIz N#;g nStartPos = new long[nCount]; g(}8n bTA nEndPos = new long[nCount]; =A&*SE o5 for(int i=0;i<nStartPos.length;i++) 5]n<%bP\ { .)pRB7O3 nStartPos = input.readLong(); hm} :Me$[) nEndPos = input.readLong(); v>cE59('0 } z o))x( input.close(); QRG)~ } M$hw(fC|m1 catch(IOException e){e.printStackTrace ();} ..]X< catch(Exception e){e.printStackTrace ();} ~9'4w-Sy }
*/dsMa 2P>za\ M,!no private void processErrorCode(int nErrorCode) u|*|RuY { 0-; P&m!! System.err.println("Error Code : " + nErrorCode); H?bsK~ } o0+BQ&A)s* la{:RlW VKJ~ZIO@A //停止文件下载 +jZg%$Q!# public void siteStop() U.sPFt { FveK|- bStop = true; ~5dq5_ for(int i=0;i<nStartPos.length;i++) zc~xWy+ fileSplitterFetch.splitterStop(); |DS@90} (GOrfr )0V]G{QN } Saq>o. } v?"ee&Y6 //负责部分文件的抓取 7,VWvmWJex **FileSplitterFetch.java bh6wI%8H */ +dpj? package NetFox; ^dKaa Gqb-3ngH q@Yt`$VTN import java.io.*; .wOLi Ms import java.net.*; JkDZl?x5 w*kFtNBfU h_"/@6 public class FileSplitterFetch extends Thread { Z8n%=(He W$&Ets8zo Im1qWe String sURL; //File URL L*oLKigT long nStartPos; //File Snippet Start Position 8VGXw;(Y,d long nEndPos; //File Snippet End Position (mr`?LI} int nThreadID; //Thread's ID
_q}%!#4 boolean bDownOver = false; //Downing is over T.N7` boolean bStop = false; //Stop identical 1gK3=Ys FileAccessI fileAccessI = null; //File Access interface Dk6\p~q /1
%0A -2Cf)>`v public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException #;\;F PuZ { `%I{l this.sURL = sURL; vszAr(
t this.nStartPos = nStart; *K)53QKlE this.nEndPos = nEnd; )@|Fh@| nThreadID = id; =C2C~Xd fileAccessI = new FileAccessI(sName,nStartPos);//定位 r>@/XYK&\ } O*CX@Ne
uKzz/Y{ U>jk`?zW public void run() 3;gtuqwD$ { qf$|z`c while(nStartPos < nEndPos && !bStop) hRcJ):Wyb { zQfxw?~A yC$7XSr= BV:,bS try{ j !n> d URL url = new URL(sURL); 1OeDWEcB HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )O(Gw-jWE httpConnection.setRequestProperty("User-Agent","NetFox"); %K,,Sl_ String sProperty = "bytes="+nStartPos+"-"; n=MYv(Pp} httpConnection.setRequestProperty("RANGE",sProperty); Zul32]1r Utility.log(sProperty); l@jJJ)Qyk .HJHJ.Js8X :m)?+ InputStream input = httpConnection.getInputStream(); /Loe y
//logResponseHead(httpConnection); FJiP>S[] N Uml" ?bA]U: byte[] b = new byte[1024]; 9}_f\Bs int nRead; 55KL^+-~ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) haK5Oe/cE { IsL/p3| nStartPos += fileAccessI.write(b,0,nRead); WF0>R^SpZ //if(nThreadID == 1) P6'I:/V // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $QnfpM%+= } py4_hj\v tTamFL6 <a3XV Utility.log("Thread " + nThreadID + " is over!"); ~`fB\7M bDownOver = true; h:90K //nPos = fileAccessI.write (b,0,nRead); . r"?w } :M`BVZ1t catch(Exception e){e.printStackTrace ();} "VCr^' } :UciFIa } ["/x~\c'N j(2T,WM bm?TMhC //打印回应的头信息 1nmWL0 public void logResponseHead(HttpURLConnection con) PdnK@a { +y(h/NcQ for(int i=1;;i++) v[GHqZ { C" WZsF^3 String header=con.getHeaderFieldKey(i); wUndNE
if(header!=null) SQx):L)P6 //responseHeaders.put(header,httpConnection.getHeaderField(header)); ~`.%n7 Utility.log(header+" : "+con.getHeaderField(header)); q;JQs:U! else y9<Fv|Ric break; rJwJ5U } A/aQpEb% } WKML#U]5T -]%@,L^@ w:v:znQrW public void splitterStop() H_]kR&F8 { | w -W=v bStop = true; ;zODp+4@Q } sJ=B:3jS0 {D< ?.' #n
r1- sf| } M$9h)3(B
`SrVMb( PN=yf@<V3F /* 9b6h!( **FileAccess.java "Q4{6FH+mB *//文件访问(定位,写) ;<H2N0qJ( package NetFox; !}?]&[N= import java.io.*; zZ-*/THB@R n9 DFa3 0jH2.d= public class FileAccessI implements Serializable{ l:HuG! e+U o-CO //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 *fZ'#C~x RandomAccessFile oSavedFile; g=8e.Y*Fr long nPos; rD gl@B3 l"CONzm!
Pipif. public FileAccessI() throws IOException <LY+"
Y { g;T`~
this("",0); H#K|SSqY? } wC~Uy% _45"Z}Zx ,@xZuq+K< public FileAccessI(String sName,long nPos) throws IOException ;C'*Ui { mDUS9> oSavedFile = new RandomAccessFile(sName,"rw"); PoZBiw@ this.nPos = nPos; fsoS!6h0k oSavedFile.seek(nPos); F44")fY } \&fK 8H1 R}FN6cH PR0]:t)E public synchronized int write(byte[] b,int nStart,int nLen) %VCHM GP= { wvD|c%
int n = -1; qI9 BAs1~} try{ NG ~sE&,7 oSavedFile.write(b,nStart,nLen); rcCMx"L= n = nLen; :M16ijkx } %BJ V$tO catch(IOException e) IV76#jL { =zdRoXBY[b e.printStackTrace (); A7se#"w } Rd/!CJ@g nM#\4Q[}Jh QMP:} return n; W;7cF8fu4 } :v`o=" gueCP+a_ #\qES7We6 } MeC@+@C u56cT/J1 3f0RMk$pH /* H|]Q;,C **SiteInfoBean.java %y'#@%kO:S */ =x>KA*O1 package NetFox; iM-@?!WF /OEj]DNY hz!.|U@,{< public class SiteInfoBean { q-'zZ# 8l6R.l
Y&nY]VV private String sSiteURL; //Site's URL Ktoxl+I? private String sFilePath; //Saved File's Path L fhd02 private String sFileName; //Saved File's Name YRFM1?* private int nSplitter; //Count of Splited Downloading File _
._'\ K\#+;\V ~_Aclm? public SiteInfoBean() hq|/XBd|| {//nSplitter的缺省值为5 ^VD14V3 //default value of nSplitter is 5 ] '..G- this("","","",5); umY4tNe]$ } k2~j:&p 0=NB[eG c(fwl`y!x public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) %j
yLRT]H { 0oD?4gn sSiteURL= sURL; +]G;_/[2 sFilePath = sPath; B|tP3< sFileName = sName; (c;$^xZK this.nSplitter = nSpiltter; ;tO (,^ !^w+<p ` 6PdMvF } w;XX jT qSON3Iid 2!A/]:[F public String getSSiteURL() d:3G4g { uXXwMc<p return sSiteURL; @l 1 piz8 } 1r$q $\
W<t,Ivg Y`%:hvy~ public void setSSiteURL(String value) %%*t{0!H+ { =KkHck33 sSiteURL = value; JVRK\A|R } ws@;2?%A "!2Fy-Y US-P>yF public String getSFilePath() HA| YLj?|g { y 2bZo'Z return sFilePath; mD tD7FzJ } t<rhrW75P N/(&&\3 VK8 5A public void setSFilePath(String value) 5E$)Ip { %A04'dj`zQ sFilePath = value; .- {B } H13|bM< QHOem=B C;_10Rb2ut public String getSFileName() ? r^+- { 7^=O^!sa return sFileName; 0EOpK%{ } t68h$u OPar"z^EV ~)ls.NXI public void setSFileName(String value) rk `x81 { +h"RXwlBM sFileName = value; q*8^938 } $5l 8V VUk2pEGO. in$Pk$ c public int getNSplitter() X2~>Z^,
U { kP3'BBd, return nSplitter; {2A/ @$? } z>~Hc8*]3 Ji gc@@B. IWX%6*Zz public void setNSplitter(int nCount) !ce5pA { a8''t_Dp nSplitter = nCount; npZ=x-ce } qlO(z5Ak } 5P [b/.n O.Z<dy+ ,*Jm\u /* GHfsq|*j,Z **Utility.java s+l)Q */ $3k5hDA0e package NetFox; 5^+>*z ;CD@RP{$n &Nl: public class Utility { /aP4'U8ov x
xWnB wS9EC}s:Q public Utility() ND77(I$3s { +Ccj@#M; pbt/i+! L'M'I0"/ } w|7<y8#qC NLf6} //线程睡眠 LNPwb1) public static void sleep(int nSecond) Q0s!]Dk { Q)#+S(TG try{ lku}I4 Thread.sleep(nSecond); QE1DTU } w-LMV>+6| catch(Exception e) l.Iov?e1S { l@Uo4b^4x e.printStackTrace (); x8+W9i0[1 } v@(Y:\> } |]y]K% v!JQ;OX //日志 gP:mZ7 public static void log(String sMsg) `KgIr,Q) { HG{r\jh System.err.println(sMsg); \4zb9CxOZ } !lpKZG !36jtKdM n$&xVaF| public static void log(int sMsg) gTa6%GM> { Y%m^V?k System.err.println(sMsg); lu2"?y[2 } u czOSd } '[g@A>xDvW z]:{ruvH 9x$Kb7'F /* uY{V^c#mv **TestMethod.java J=Q?_$xb} */ u2}zRC= package NetFox; =wE1j Pv,Q*gh` G;Jqby8d public class TestMethod { ^U OVXRn ~?`V$G=?, :!Ea.v public TestMethod() WCJ$S\# { ///xx/weblogic60b2_win.exe QU{|S.\ try{ w eu3c`-a SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); T$)N2]FE //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); FyY<Vx'yQ SiteFileFetch fileFetch = new SiteFileFetch(bean); >..C^8 " fileFetch.start(); m$6u K0 }
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catch(Exception e){e.printStackTrace ();} rRgP/E#_ ksb.]P d. Twl>Pn> } bruM#T@} & |