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/* !.X.tc **SiteFileFetch.java i%{X9!*%TX */ .p6+l!" package NetFox; 9s$U%F6} import java.io.*; &eZfQ27$ import java.net.*; 1cJsj -=}3j&,\R 8g/F)~s^F public class SiteFileFetch extends Thread { V64L,u#`l 7^e + 1(dj[3Mt SiteInfoBean siteInfoBean = null; //文件信息Bean )mcEQ -!b long[] nStartPos; //开始位置 fys long[] nEndPos; //结束位置 MXh
"Y*} FileSplitterFetch[] fileSplitterFetch; //子线程对象 ^HA
%q8| n long nFileLength; //文件长度 X]*QUV]i boolean bFirst = true; //是否第一次取文件 VM=+afY5M boolean bStop = false; //停止标志 oR#:NtX@ File tmpFile; //文件下载的临时信息 o4^Fo p DataOutputStream output; //输出到文件的输出流 @e2}BhB2 NYB[Zyp //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 12`_;[37 public SiteFileFetch(SiteInfoBean bean) throws IOException v> z@ { \ZXLX'- siteInfoBean = bean; 7*H:Ob)9k //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); e;95a tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); SAv<& if(tmpFile.exists ()) `k{& /] { \c`oy=qY0 bFirst = false; omX?Bl read_nPos(); 8\ha@&p } ]o/|na* else o>D { 3/6/G}s nStartPos = new long[bean.getNSplitter()]; A2H4k|8 nEndPos = new long[bean.getNSplitter()]; g[z.*y/ } -7]Xjb5 :VA.Q rKW ~%y @Xsot> _GtBP'iN } #
'|'r+ B5am1y{P# .V'V:;BE% public void run() A7XnHPIw { H}0dd" //获得文件长度 u=+q$Q] //分割文件 c9Es%@] //实例FileSplitterFetch ,d,\-x-+/ //启动FileSplitterFetch线程 f^Bc //等待子线程返回 dfj\RIV8 try{ MQ/
A]EeL if(bFirst) adEJk { r4 dOK] 0 nFileLength = getFileSize(); I*[tMzE if(nFileLength == -1) &~DTZgY { Z'v-F^ System.err.println("File Length is not known!"); T6#"8qz< } B7*}c]^6/ else if(nFileLength == -2) Z0,~V { d.<~&.-$ System.err.println("File is not access!"); vq'c@yw; } UH`h OJ? else ?:rx1}:F { QP I+y8N= for(int i=0;i<nStartPos.length;i++) :Og:v#r8= { u62 )QJE nStartPos = (long)(i*(nFileLength/nStartPos.length)); -#&kYK#Ph } ,t$,idcT+ for(int i=0;i<nEndPos.length-1;i++) bMoAD.} { d}I(`%%) nEndPos = nStartPos[i+1]; (zo^Nn9VJ } b
B nEndPos[nEndPos.length-1] = nFileLength; !cEG}(|h } $A\m>*@ } ekSY~z=/u :K.4 n P1zK2sL_ //启动子线程 f`<FT'A fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; b%(6EiUA for(int i=0;i<nStartPos.length;i++) l0]d { ;."<m fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), WT3gNNx| siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), $\Lyi#< nStartPos,nEndPos,i); LX+5|u Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ;-mdi/*g fileSplitterFetch.start(); 1' w:`/_ } &R-H"kK? // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "
BTE siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); F
8yF // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %oykcf,# nEndPos = " + nFileLength); p
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// fileSplitterFetch[nPos.length-1].start(); P @%.`8 NY FpV`#6i7 //等待子线程结束 YrI|gz) //int count = 0; US&B!Q:v //是否结束while循环 5CYo7mJ6+ boolean breakWhile = false; 43:t
\ &M&{yc*% A]`:VC=IU while(!bStop) Do-^S:. { {i{xo2<1" write_nPos(); 1cN')" Utility.sleep(500); `vk0c breakWhile = true; 7G2PMe;$m \y
Hen|% m$Y
:0_^- for(int i=0;i<nStartPos.length;i++) =J'P. { Qu*1g(el!o if(!fileSplitterFetch.bDownOver) <EX7WA { - Xupq/[, breakWhile = false; Rhgj&4 break; Ibr%d2yS= } b}z`BRCc } .#6MQJ]OH if(breakWhile) w; TkkDH break; NC23Z0y HZJL/=; 5a`%)K //count++; &K%aw //if(count>4) $< %B#axL // siteStop(); R'K/t|MC } eBr4O i c=p=-j=.J X~U >LLr System.err.println("文件下载结束!"); `x8Bn" } 8QgA@y" catch(Exception e){e.printStackTrace ();} xh9qg0d } %|Qw9sbd rs8\)\z B&KL2&Z~Pq //获得文件长度 u:P~j public long getFileSize() _kraMQ> { !>.vh]8g int nFileLength = -1; nS.G~c| try{ 7!V@/S}7 URL url = new URL(siteInfoBean.getSSiteURL()); d.F)9h]XHO HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?Hz2-Cn httpConnection.setRequestProperty("User-Agent","NetFox"); 1i|.h >>'C
:7+Y , |E$' int responseCode=httpConnection.getResponseCode(); t%0?N<9YkU if(responseCode>=400) |Ur"za;%@ { >9K//co"of processErrorCode(responseCode); n]? WCG}cd return -2; //-2 represent access is error 0&w0aP`Y } }p3b#fAr j
BS4vvX? .(Y6$[#@ String sHeader; _^!vCa7f Opg#*w%- htJuGfDx1 for(int i=1;;i++) 4jwu'7Q { dSK0h(8 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); u=K2Q4 //Utility.log(in.readLine()); I44s(G1jl sHeader=httpConnection.getHeaderFieldKey(i); )/t6" " if(sHeader!=null) 440FhDMj { pWaPC/,g if(sHeader.equals("Content-Length")) *o?i:LE] { Fz"ff4Bx [ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); pa/9F[ break; #gZ|T
M/h } C3 ;[e0.1b } UZxmhsv else GrI&?=S^ break; ocA]M=3~k } nYw\'c } f=:.BR{ catch(IOException e){e.printStackTrace ();} 5~VosUpe7 catch(Exception e){e.printStackTrace ();} fj']?a!m ?T'][q ;Rnhe_A. Utility.log(nFileLength); QApyP CH <4X?EYaTq !$xu(D. return nFileLength; R{}qK r } :=. *I !k&)EWP? l gq=GHW //保存下载信息(文件指针位置) p8>%Mflf private void write_nPos() EA0iYzV { fEqC] *s try{ ohZx03 output = new DataOutputStream(new FileOutputStream(tmpFile)); x7ATI[b[ output.writeInt(nStartPos.length); ?S`>>^ for(int i=0;i<nStartPos.length;i++) aC\4}i< { NB)t7/Us // output.writeLong(nPos); :=!Mh}i output.writeLong(fileSplitterFetch.nStartPos); y?:dE.5p| output.writeLong(fileSplitterFetch.nEndPos); YMzBAf } /^<en(0=P output.close(); #BJ\{"b_}z } ,)#.a%EKA catch(IOException e){e.printStackTrace ();} ;;#nV$ catch(Exception e){e.printStackTrace ();} o0Gx%99' } ;sQbn|=e" s-D?) >;lKLGJrd> //读取保存的下载信息(文件指针位置) zG%
|0
private void read_nPos() vA>W9OI
{ 8F6h#%9 try{ {8CWWfHCD DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); &=w|vB)(p int nCount = input.readInt(); UzQ$B> f nStartPos = new long[nCount]; ;h=S7M9. nEndPos = new long[nCount]; (_8#YyW# for(int i=0;i<nStartPos.length;i++) sBjXE>_#) { 8&(-8 nStartPos = input.readLong(); 4XG]z_+I nEndPos = input.readLong(); $h[Yz l } d6b.zP input.close(); ^Q2ZqAf^a } x:-`o_Q*i catch(IOException e){e.printStackTrace ();} (V9h2g&8L catch(Exception e){e.printStackTrace ();} gxM[V>[ } mK\aI ;'1Apy r%-n*_?.s private void processErrorCode(int nErrorCode) c E76L%O { > V%Q O>C System.err.println("Error Code : " + nErrorCode); qi\n] I } n7iE8SK|k $
I<|-]u uPU#c\ //停止文件下载 l>Av5g)
public void siteStop() wRbw { .TN2s\:]jw bStop = true; ua#K>sur. for(int i=0;i<nStartPos.length;i++) fv?45f fileSplitterFetch.splitterStop(); R}k69-1vL qS]G&l6QF
`ue?Z%p| } Phlk1*1n } \(u@F<s- //负责部分文件的抓取 mQ,{=C=D **FileSplitterFetch.java sp{j!NSL */ `o-*Tr package NetFox; 6\`DlUn'* ^x3EotQ\ IwRQL% import java.io.*; BE4\U_]a3 import java.net.*; NbDda/7ki uBRw>"c_*8 EXHR(t}e public class FileSplitterFetch extends Thread { C'<'7g4 x]'H jTqX %!wq:~B1 String sURL; //File URL @_O3&ZK long nStartPos; //File Snippet Start Position .zwVCW,u long nEndPos; //File Snippet End Position ..$>7y} int nThreadID; //Thread's ID ?*o;o?5s^ boolean bDownOver = false; //Downing is over LDX y}hm) boolean bStop = false; //Stop identical fLM.kCD?u FileAccessI fileAccessI = null; //File Access interface cG(0q[ Rp4FXR jC gMay public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException <G9<"{ { m3"c (L`B this.sURL = sURL; dqz1xQ1 this.nStartPos = nStart; E{oB2;P this.nEndPos = nEnd; ULu O0\W nThreadID = id; o16~l]Z|f fileAccessI = new FileAccessI(sName,nStartPos);//定位 c}cG<F } Nh:4ys!P U,HS;wo;t 6vWii)O.D public void run() s((b"{fFb { 1>;6x^_h0S while(nStartPos < nEndPos && !bStop) !7Uu]m69n { 24O
d] f JU2P%3 )<Ob try{ |VYr=hjo URL url = new URL(sURL); d'q&Lq HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `\e'K56W6 httpConnection.setRequestProperty("User-Agent","NetFox"); 8J^d7uC String sProperty = "bytes="+nStartPos+"-"; |rFJ*.nD httpConnection.setRequestProperty("RANGE",sProperty); i&pMF O Utility.log(sProperty); m9I(TOw f~iML5lG 1O4D+0@ InputStream input = httpConnection.getInputStream(); wOM<XhZ //logResponseHead(httpConnection); C=s((q* $~ VcQ !|(Ao"] byte[] b = new byte[1024]; ULck int nRead; oE 5;|x3 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 9JXhHAxD { K"I{\/x@ nStartPos += fileAccessI.write(b,0,nRead); D/*vj| //if(nThreadID == 1) l`qP~k# // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); s)Gb!-`` } 1"d\mE +> ^[W~[2 xpz`))w Utility.log("Thread " + nThreadID + " is over!"); $Uy#/MX bDownOver = true; % dYI5U89 //nPos = fileAccessI.write (b,0,nRead); Bd QQ9$@5 } \Qp}|n1JY catch(Exception e){e.printStackTrace ();} TftOYY.hQ } i(z+a6^@| } iPz1eUj O/nqNQ?< |<'10 //打印回应的头信息 y^, "gD public void logResponseHead(HttpURLConnection con) '&/(oJ;O~ { EO"=\C, for(int i=1;;i++) Px$'(eMj^3 { ud.poh~| String header=con.getHeaderFieldKey(i); *:(1K%g if(header!=null) ?'T"?b< //responseHeaders.put(header,httpConnection.getHeaderField(header)); HoMQt3C Utility.log(header+" : "+con.getHeaderField(header)); Qk|( EFQ9 else ?3n=m%W,J* break; tI
`w;e%HN } "3v7 gtGG } +6uOg,; &8zk3 q~mcjbLz public void splitterStop() ^sJ1 ^LT { 2k%Bl+I bStop = true; ADTU{6UPS } W;5N04ko TjT](?'o Yo>%s4_, } DCz\TwzU N4'
.a=1 rffVfw /* z/pDOP Ku **FileAccess.java Xx=K?Z?3. *//文件访问(定位,写) nIG[{gGX package NetFox; W&Y4Dq^ import java.io.*; /95FDk> D5}DV \]Kq(k[p public class FileAccessI implements Serializable{ }'%$7vL`Ft kg zwlKK //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 CzK%x?~] RandomAccessFile oSavedFile; :u,2"] long nPos; -DA;KWYS HW^{ ;'kH~ (2n3exx public FileAccessI() throws IOException o@Dk%LxP { wHq('+{=&
this("",0); r#ks>s } #d3[uF]OmW AX/=}G \XZU'JIO public FileAccessI(String sName,long nPos) throws IOException *{HGLl|= { *sIi$1vHu oSavedFile = new RandomAccessFile(sName,"rw"); h\Z3y AYd this.nPos = nPos; c>M_?::)0 oSavedFile.seek(nPos); 4mki&\lw` } >6n@\n R9S7_u N)`tI0/W public synchronized int write(byte[] b,int nStart,int nLen) x*3@,GmZl { y[TaM9< int n = -1; FI80vV7
try{ n\~"Wim<b oSavedFile.write(b,nStart,nLen); }S
Y`KoC1 n = nLen; ag|9$ } BF@m)w.v catch(IOException e) F^4*|g { KB$ vQ@N e.printStackTrace (); aMe%#cLI } =iA"; x r9U[-CX:" <6~/sa4GN return n; +3(CGNE } 6,sRavs Y;~EcM rCV$N&rK } <e@I1iL37y Ly@U\%. MZgmv /* &Z#Vw.7U **SiteInfoBean.java I$rW[l2 */ "i;*\+x package NetFox; &e5^v oXu~9'm$ p?EEox public class SiteInfoBean { vLVSZX Ktj(&/~} DR#3njjEC private String sSiteURL; //Site's URL 0nF>zOmc private String sFilePath; //Saved File's Path )AZ`R8-A private String sFileName; //Saved File's Name +9&ulr private int nSplitter; //Count of Splited Downloading File IFHgD}kp%# ?,A8 fR n=<q3}1Jej public SiteInfoBean() 67EDkknt {//nSplitter的缺省值为5 oW` *FD //default value of nSplitter is 5 B)LXxdkOn this("","","",5); /0'fcjOaQ } U^WQWa @5uyUSt] 7]0\[9DyJ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) :{e`$kz { .>cL/KaP sSiteURL= sURL; *
S+7BdP
sFilePath = sPath; LS?` {E
sFileName = sName; >xk:pL*o` this.nSplitter = nSpiltter; oQE_?">w 3M5=@Fwkr Wl}G[>P } `pn-fk ixUiXP QQ2OZy>W public String getSSiteURL() #EwRb<'Em { @idp8J [td return sSiteURL; O>{t}6o } U7f#Z 60SenHKles ?N9adL &b public void setSSiteURL(String value) l7FZ;%& { YjMbd?v sSiteURL = value; jw&}N6^G } *AJezhR <{P^W;N7 Wl^/=I4p# public String getSFilePath() n,R[O_9u[ { l"V8n BR` return sFilePath; D(2kb } =h1 QN WHh2fN'A5 UBpM8 /U public void setSFilePath(String value) %QlBFl0a { ;U5x'}%0] sFilePath = value; Ib<5u } omDi<- `XRb:d^ Ii2g+SlQDa public String getSFileName() Qc)RrqYNGF { x#!{5;V&K return sFileName; :D)&>{? } tue%L]hc bU@>1>b6lE RI<Yg# public void setSFileName(String value) ~P.-3 { 4h0jX9 sFileName = value; m0q`A5!) } W.7d{
@n }][|]/s?42 hwb(W?* public int getNSplitter() p{pzOMi6 { }<x!95 return nSplitter; H;"N|pBy } #h|,GvmF<b lQ(BEv"2G[ Tef3
Z6 public void setNSplitter(int nCount) ^?l-YnQqm? { "=0lcbC nSplitter = nCount; .$T:n[@ } lyc{Z%!3 } E6d8z=X( ^#6%*(D =Z$=-\<x0. /* kA9 X!)2w **Utility.java z ]4g`K+ */ sGm(Aax*0 package NetFox; 6d?2{_} , Z6
|'k:R8 ]9l% public class Utility { `0i}}Zo oew]ijnB ;),O*Z|"v public Utility() M%dl?9pbq { 3[g++B."pC 3Tte8]0 jn3|9x } f;;
S !B38!
L //线程睡眠 R5~vmT5W public static void sleep(int nSecond) jgfP|oD { "rlSK >` try{ H<}Fk9 Thread.sleep(nSecond); X9BBnZ } U=<.P;+f9 catch(Exception e) -W"0,.Dvg { x~Esu}x7 e.printStackTrace (); i1H80m s } F/,<dNJ } ;<ma K*f\S :{= 'TMJ7 //日志 Q)i`.mHfFI public static void log(String sMsg) eX),B { b.u8w2( System.err.println(sMsg); 2ZIY{lBe } jm!C^5! af5`ktx /xbF1@XtL public static void log(int sMsg) ;.[$ {
*Zo o System.err.println(sMsg); 8$xKg3-3M } GZ>% &^E } ^T1-dw(
vCe<-k &!EYT0=>p /* zbKW.u]v **TestMethod.java (6y3"cbe */ mZJzBYM) package NetFox; r{3`zqo Xv(9 YhS X!+ a;wr public class TestMethod { ,$(v#Tz v/6,eIz CoN/L`.SN public TestMethod() z7}zf@Y-qv { ///xx/weblogic60b2_win.exe >Ezwl5b try{ Rm1` D SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); U[ungvU1U //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ?cxK~Y\ SiteFileFetch fileFetch = new SiteFileFetch(bean); 1X}Tp\e fileFetch.start(); a9_KQ=&CI } JBJ7k19; catch(Exception e){e.printStackTrace ();} ]O `
[v <UL|%9=~ J7] 60H#P } #.t{g8W\C Y,"MQFr(o NB#*`|qt public static void main(String[] args) 2cL)sP} { VYQbyD{V w new TestMethod(); 1EPOYvf%U } %{_
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