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/* x_VD9 **SiteFileFetch.java
o.|P7{v} */ u zgQ_ package NetFox; o +KDK{MD import java.io.*; pB0p?D)n import java.net.*; O~~WP*N RF$2p4=[ |X6/Y@N public class SiteFileFetch extends Thread {
vv0+F6 @ %!X9>i> [3|&!:4g6 SiteInfoBean siteInfoBean = null; //文件信息Bean rO3.%B} long[] nStartPos; //开始位置 |0N6]%r long[] nEndPos; //结束位置 MFzJ 8^.1R FileSplitterFetch[] fileSplitterFetch; //子线程对象 b;k3B7< long nFileLength; //文件长度 R.'-jvO boolean bFirst = true; //是否第一次取文件 h}$g}f%$+ boolean bStop = false; //停止标志 :)=>,XwL8 File tmpFile; //文件下载的临时信息 R;l;;dC= DataOutputStream output; //输出到文件的输出流 l\t\DX"s_ -'%>Fon //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) F)n^pT public SiteFileFetch(SiteInfoBean bean) throws IOException g:rjt1w`D { F :p9y_W siteInfoBean = bean; =&~7Q" //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 9S_PZH tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); vOQ
3A%/ if(tmpFile.exists ()) 1=U NA :t< { 68 \73L= bFirst = false; hI>vz"J read_nPos(); DElrY)3O. } Q/zlU@ else cN3!wE { CyXFuk!R nStartPos = new long[bean.getNSplitter()]; 'nRoa7v( nEndPos = new long[bean.getNSplitter()]; )Bw}T } EJ@&vuDd$ J1UG},-h 50jZu'z: )Gm,%[?2C } $~c
wB Qo$j'|lD @^cR public void run() ?DrA@;IB { =8V
9E //获得文件长度 Cno+rmsfT //分割文件 1Wr,E#+C //实例FileSplitterFetch Nbvs_>N //启动FileSplitterFetch线程 |w].*c}Z //等待子线程返回 bGtS! 'I try{ H~:EPFi.( if(bFirst) u8Ak2:
{ QCAoL.v nFileLength = getFileSize(); Mj<T+Ohz if(nFileLength == -1) 67b
w[#v { FKBI.}A?!' System.err.println("File Length is not known!"); PrqyJ } z; Jz^m- else if(nFileLength == -2) 9y+0Zj+. { 38E
%]*5F System.err.println("File is not access!");
m"/ o4 } L.?QZN%cN else ;V0^uB.z { W"n0x8~sV for(int i=0;i<nStartPos.length;i++) K
7OIT2- { F87/p nStartPos = (long)(i*(nFileLength/nStartPos.length)); urhOvC$a } A@<a')#>) for(int i=0;i<nEndPos.length-1;i++) c:I %jm { kt2W7.A5 nEndPos = nStartPos[i+1]; zI,z <- } <BiSx nEndPos[nEndPos.length-1] = nFileLength; A9_}RJ9 } JnIE6@g<y } `n?Rxhkwp dt|| nF hN^,'O //启动子线程 .]w=+~h fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; K1$
for(int i=0;i<nStartPos.length;i++) ^D8~s; ? { aqEmF fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {/}%[cY= siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ey@ccc*sZ9 nStartPos,nEndPos,i); i_e%HG Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Dv"HFQuF fileSplitterFetch.start(); Marx=cNj } UQ#t & // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), BUS4 T#D siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); VVJIJ9L&C // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", V}X>~ '% nEndPos = " + nFileLength); *3\*GatJ // fileSplitterFetch[nPos.length-1].start(); FrC)2wX P W_"JZ `gAW5 i-z5 //等待子线程结束 |*$0~mA //int count = 0; oy-y QYX //是否结束while循环 H/U.Bg 4 boolean breakWhile = false; > JC"YB l;d4Le hVIv-> while(!bStop) =m;,?("7t3 { $0Ys{m write_nPos(); [Ob09#B%:5 Utility.sleep(500); ^r~O* breakWhile = true; =P%?{7 ;pj,U!{%s\ -}u1ZEND for(int i=0;i<nStartPos.length;i++) 0`V;;w8 { xzHb+1+p if(!fileSplitterFetch.bDownOver) [/o BjiBA { z HT#bP:o breakWhile = false; #/>
a`Ur_ break; wk#cJ`wG; } lK_T%1Gz } :%_h'9Qq if(breakWhile) U@9v(TfV break; &F:%y(;{Y <JIqkGeAi $R%tD.d3 //count++; 6of9lO: //if(count>4) {53|X=D64 // siteStop(); 8*;>:g } sJ{r+wY g/frg(KF ;nrkC\SYh: System.err.println("文件下载结束!"); t$
97[ay } }
m"':f catch(Exception e){e.printStackTrace ();} .k$Yleg } 6l:uQz9 ~ mz X1[ =h xyR; //获得文件长度 #jJ0Mxg public long getFileSize() >0_{80bdO { Oy b0t|do+ int nFileLength = -1; +|Izjx]ZV try{ `A9fanh URL url = new URL(siteInfoBean.getSSiteURL()); %(|-+cLW+ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8DX5bB httpConnection.setRequestProperty("User-Agent","NetFox"); +p[O|[z m>|7&l_ d3\KUR^ int responseCode=httpConnection.getResponseCode(); YYL3a=;`a if(responseCode>=400) E
6+ ooB[ { P%ThW9^vnj processErrorCode(responseCode); ,`PYU[ return -2; //-2 represent access is error $4*gi& } P_5 G'[ @Ko#nDEq -/
G#ls|? String sHeader;
`n@;%*6/ 5g.w"0MkY qHgzgS7a for(int i=1;;i++) Kn1T2WSAg { `6RccEm //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); TqSjL{l% //Utility.log(in.readLine()); X#Ob^E%J sHeader=httpConnection.getHeaderFieldKey(i); Qsw.429t if(sHeader!=null) D<:zw/IRE { K:A:3~I!NW if(sHeader.equals("Content-Length")) c>3j$D+ { *2fJdY nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (&u'S+ break; rp^:{6O } re,}}' } q6b&b^r+H else B`gH({U break; I2krxLPd } 0dQ\Y]b } :wEy""*N0 catch(IOException e){e.printStackTrace ();} q&}+O catch(Exception e){e.printStackTrace ();} i9V, /EJy?TON* !x\\# 9 Utility.log(nFileLength); .s?^y+e_ :sw@1 _[Sh`4`r return nFileLength; :Gzp
(@<@e } f]mVM(XZN ?o`:V|<v R](cko= //保存下载信息(文件指针位置) =Ot_P7'5gv private void write_nPos() Gx4{ 9 { )TyP{X> try{ OG_v[ C5 output = new DataOutputStream(new FileOutputStream(tmpFile)); z_=V6MDM output.writeInt(nStartPos.length); 52NI{" for(int i=0;i<nStartPos.length;i++) J qmL|S) { ggrkj0 // output.writeLong(nPos); ;Wa&Dg/5` output.writeLong(fileSplitterFetch.nStartPos); Jl6lZd(Np output.writeLong(fileSplitterFetch.nEndPos); dt>9mF q } \.+:yV<$ output.close(); X 4!Jj* } `
@lNt} catch(IOException e){e.printStackTrace ();} fW[RCd catch(Exception e){e.printStackTrace ();} o\PHs4Ws'7 } o
q6^ gX$gUB) x xJnN95`R@ //读取保存的下载信息(文件指针位置) ;.rY`<| private void read_nPos() gzy|K%K { ]vPdj"7 try{ $pt~?ZZ3- DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); %mD{rG9 int nCount = input.readInt(); Gd'_X D nStartPos = new long[nCount]; ]rNxvFN*j nEndPos = new long[nCount]; gIIF17|Z for(int i=0;i<nStartPos.length;i++) 7TU xdI { 1
.[OS nStartPos = input.readLong(); X<pNc6 nEndPos = input.readLong(); 5sj$XA?5 } M ac?HI input.close(); \zwm:@lG } s,pg4nst56 catch(IOException e){e.printStackTrace ();} U_.}V catch(Exception e){e.printStackTrace ();} m8G/;V[x } fU\;\ +\u\BJ!LAJ f! )yE`4- private void processErrorCode(int nErrorCode) 'i: lV' { 86!$<!I System.err.println("Error Code : " + nErrorCode); DO9K } f"NWv! SG1AYUs
V g[uf
e< //停止文件下载 O(9*VoD public void siteStop() gjFQDrz( { #/8
Nav bStop = true;
QAMcI:5 for(int i=0;i<nStartPos.length;i++) rhX?\_7o fileSplitterFetch.splitterStop(); CJwzjH vA[7i*D{w ,7DyTeMpN } U.b|3E/^ } k7L4~W //负责部分文件的抓取 "DH>4Q]
d **FileSplitterFetch.java U!K#g_} */ +x/vZXtOK package NetFox; >6@,L+-6r &3xda1H Q`Q"p import java.io.*; `*`ZgTV import java.net.*; T|j=,2_ AxF$7J( oIMS >& public class FileSplitterFetch extends Thread { I)0_0JXs L/%{,7l<^? -^;,m=4{3 String sURL; //File URL #XqiXM~^R long nStartPos; //File Snippet Start Position y@7CY-1 long nEndPos; //File Snippet End Position tp }Bz&V int nThreadID; //Thread's ID wlslG^^(! boolean bDownOver = false; //Downing is over F g'{K%t4 boolean bStop = false; //Stop identical g[~J107%A FileAccessI fileAccessI = null; //File Access interface PlT_]p ~r'ApeI9 ='C;^
Bk public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException tw.z5 { Uyeo0B" this.sURL = sURL; wuXH' this.nStartPos = nStart; ,t9CP this.nEndPos = nEnd; -mo4`F nThreadID = id; <]|!quY<* fileAccessI = new FileAccessI(sName,nStartPos);//定位 ac966<# } 8<KC-|y. Ol>/^3a= \5=4!Ez public void run() C@-cLk { ^ P
A|RFP while(nStartPos < nEndPos && !bStop) Goy[P2m { '"ze Im~ {i3=N{5b #e[r0f?U try{ 8YgRJQZ! URL url = new URL(sURL); ?P#\CW HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); aD6!x3c/ httpConnection.setRequestProperty("User-Agent","NetFox"); HqV4!o9' String sProperty = "bytes="+nStartPos+"-"; Qv;b$by3 httpConnection.setRequestProperty("RANGE",sProperty); cf*~Gx_l Utility.log(sProperty); sqjDh qLKL*m JRE\R&>g InputStream input = httpConnection.getInputStream(); r?^L/HGc //logResponseHead(httpConnection); HzuG- V O`N,aYo f9IqcCSW byte[] b = new byte[1024]; 1]A\@( int nRead; YhooD,[. while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ~3-+~y=o~ { jMX|1b nStartPos += fileAccessI.write(b,0,nRead); w_LkS/ //if(nThreadID == 1) 6{g&9~V // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _G/uDP% } l <Z7bo YG*}F|1 l2wu>Ar7. Utility.log("Thread " + nThreadID + " is over!"); 9+.3GRt7 bDownOver = true; o"A?Aq //nPos = fileAccessI.write (b,0,nRead); h7m$P^=U } Z-" NLwt[ catch(Exception e){e.printStackTrace ();} &XXr5ne~C } E>2AG3) } X76rme lYr4gFOs ^?A>)?Sq //打印回应的头信息 R+/kx#^ public void logResponseHead(HttpURLConnection con) vAOThj) { e<~bDFH for(int i=1;;i++) %/!f^PIwX { ofgNL .u String header=con.getHeaderFieldKey(i); zU4*FXt if(header!=null) BgB0 //responseHeaders.put(header,httpConnection.getHeaderField(header)); 3u
s^\w# Utility.log(header+" : "+con.getHeaderField(header)); wARd^Iw else X2P8Zq=%a break; fN9uSnu
} Fa{[kJ8z } 'I>geW?{QK ws
U @hqS gnf4H
V~ public void splitterStop() G1I<B { i@%a!].I bStop = true; Ty3.u9c4 } SxkY ;^-U a,n#E!zT?w SR<W3a\ } .5A .[ZY) R[QBFL< !?K#f?x<? /* #;;A~d:V **FileAccess.java Q Vl"l'e8 *//文件访问(定位,写) ~{{7y]3M- package NetFox; )t2 eg1a: import java.io.*; dMI G2log wz Y{ii 3]7j,1^ public class FileAccessI implements Serializable{ X2YBZA :*t5? //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Nkn2\w RandomAccessFile oSavedFile; -"x@ V7X long nPos; \J-D@b; /U0,% g?u=n`k]\ public FileAccessI() throws IOException F U)=+m { :8]y*j this("",0); I(z16wQ } xE*.,:,& 5d-rF:# oS<*\!&D public FileAccessI(String sName,long nPos) throws IOException IUD@Kf]S { Bt(nm>Ng oSavedFile = new RandomAccessFile(sName,"rw"); Sb }=j;F this.nPos = nPos; Kv ajk~ oSavedFile.seek(nPos); \Y6r
!D9 } ,Z8)DC= \]3[Xw-$ LYyud public synchronized int write(byte[] b,int nStart,int nLen) N]F}Z#h { ku#WQL int n = -1; M5N#xgR try{ m@",Zr`f= oSavedFile.write(b,nStart,nLen); ~*e@^Nv)v n = nLen; X]=8Oa } RxVZn"" catch(IOException e) u7},+E)+B { E=]|v+#~ e.printStackTrace (); ss`Sl$ } vb9C k=O 7}pg7EF3z return n; FJn.V1 } nW
oh(a O-3a U!L @]Ac >& } 3KtJT&RuL oFsV0 {x%) VL|Z+3L /* 3`Xzp **SiteInfoBean.java dq0!.gBT2 */ /<"ok;Pu7 package NetFox; K{ntl-D&y /.>%IcK
msQ?V&+< public class SiteInfoBean { LG??Q+`l 1jpft3*x RNt9Qdr4y private String sSiteURL; //Site's URL '($$-P\/ private String sFilePath; //Saved File's Path *JZlG%z private String sFileName; //Saved File's Name vx}BTH private int nSplitter; //Count of Splited Downloading File >Sb3]$$ s@6Jz\<E "/%o'Fq public SiteInfoBean() 2WE01D9O {//nSplitter的缺省值为5 x0lAJaG //default value of nSplitter is 5 pnXwE-c_ this("","","",5); sD|}?7 } rE0%R+4? 5kojh _\ ]<S{3F= public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) oc#hAjB. { b.RFvq5Z sSiteURL= sURL; 3PlIn0+LX sFilePath = sPath; ?%n"{k?# sFileName = sName; oVW>PEgB- this.nSplitter = nSpiltter; B&<P >AZ i1*0'x
{BgJ=0g? } yJ;Qe_up $#(j2sL1 o'8nQ
Tao public String getSSiteURL() .hnq>R\ { p6ryUJc6 return sSiteURL; 45OAJ?N } nYe:$t3F= DWN9_*{ ncTMcu public void setSSiteURL(String value) R`B} T<* { #w:nj1{_ sSiteURL = value; gEw9<Y } 0E)M6
jJ nj1PR`AE 3eB)X2~ public String getSFilePath() ?]o(cz { L\V`ou return sFilePath; -FJLM } 9SJSUv:@ l=x(
/!qP=ngw9 public void setSFilePath(String value) 3[8p,wx { C~C`K%7 sFilePath = value; X,{[R | } Av4(=}M}@ ) $0>L5d: RE4WD9n public String getSFileName() Ty#sY'% { WdB\n/BWB return sFileName; Xz9[0;Q } >?6HUUQ JpxQS~VX GRaU]Z]ck public void setSFileName(String value) g's!\kr { ~Yc!~Rz sFileName = value; D4uAwmc } V^rL [B +:)i c2?VjuB0 public int getNSplitter() y~su1wUp { G6+6uWvl return nSplitter; )PW|RW } EY:H\4) ?[P>2oz oB~V~c}8x public void setNSplitter(int nCount) @;N(3| n7 { i%,
't nSplitter = nCount; xLfv:Rp } b*/Mco 9O } #=;vg /Gn0|]KI X{<taD2~ /* )dh`aQ%N " **Utility.java RD=V`l{Z */ Hsd76z#8 package NetFox; :,g]Om^ lJdYR'/Wd dZI["FeO&d public class Utility { xA`j:zn'j L
u'<4 R UEhFId public Utility() )[|_q, { /7fd"U$Lh 3:xKq4? HFlExau }
sFnR; #9F>21UU //线程睡眠 E31YkD.A public static void sleep(int nSecond) V!>j:" { 9v?@2sOoE try{ !2^~ar{2 Thread.sleep(nSecond); WuFBt=% } TdT`Vf catch(Exception e) 5 jUy[w @ { D$*o}*mb e.printStackTrace (); Yl:[b{Py } {cb<9Fii } ;r&Z?B$ o*ucw3s> //日志 4nQ5zwiV public static void log(String sMsg) M ?AX:0 { 8FZC0j.^DH System.err.println(sMsg); p>#q* eU5 } hUuKkUR+Ir }`%ks 57 Bx- public static void log(int sMsg) K=nDC. { fOME&$=O System.err.println(sMsg); YbnXAi\y| } PxGw5: } 9+xO2n VJFFH\!` r|
)45@ /* ^FkB/j **TestMethod.java DvB{N`COd */ '$EyVu! package NetFox; XgM&0lVT G%AO%II {K6Z.-.` public class TestMethod { R/*"N'nH-% &43c/TSb c))?9H
,e) public TestMethod() \nPf\6;M { ///xx/weblogic60b2_win.exe "Dc\w@`E 0 try{ MGxkqy? SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ] $r].,& //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); yT5OFD|T SiteFileFetch fileFetch = new SiteFileFetch(bean); yU4mS;GX fileFetch.start(); } .Z` } /BD'{tZ]Sl catch(Exception e){e.printStackTrace ();} YD;d*E%t 0@{0#W3R @rDBK] V } *|<~IQg wfpl]d! 'GX x|. public static void main(String[] args) zy nX9t { `j9\]50Z> new TestMethod(); ,UNk]vd } R=&-nC5e } 8iOHav4 点击下载更多相关资料
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