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/* nbvkP **SiteFileFetch.java Ae|P"^kZ */ WO%h"'iJ package NetFox; r25Z`X Z import java.io.*; fU*C/ d3 import java.net.*; 4u:0n>nJ1 9F_6}.O K%,$ V,# public class SiteFileFetch extends Thread { Qd8b-hg = hX[ j.c8}r& SiteInfoBean siteInfoBean = null; //文件信息Bean ~y\:iL//E long[] nStartPos; //开始位置 {tzxA_ long[] nEndPos; //结束位置 , Fytk34 FileSplitterFetch[] fileSplitterFetch; //子线程对象 Da,&+fZI! long nFileLength; //文件长度 s'2Rs^,hN boolean bFirst = true; //是否第一次取文件 |"}4*V_ * boolean bStop = false; //停止标志 {Jx7_T& File tmpFile; //文件下载的临时信息 V;[p438o DataOutputStream output; //输出到文件的输出流 M9V-$ _) zv%J=N$G //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -Z?Ck!00 public SiteFileFetch(SiteInfoBean bean) throws IOException {^&k!H2 { /e 5\ 9 siteInfoBean = bean; e(\Q)re5Q //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); IrO+5 w tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); BRtXf0~&p if(tmpFile.exists ()) DPPS?~Pq { me'(lQ6^ bFirst = false; uZ[/%GTX{) read_nPos(); /VtlG+dLl } y\_wW E else )q(:eoLDm { MuSaK % nStartPos = new long[bean.getNSplitter()]; }1rvM4{/+f nEndPos = new long[bean.getNSplitter()]; 9A*rE.B+W } 9qeZb%r& }vsO^4Sjc .wri5 $eCGez<E } X<K9L7/* "w^Nu6 pDhY%w# public void run() 4Bo<4 4-, { $F1_^A[ //获得文件长度 /d]~ly
@uI //分割文件 u[mY!(>nQ //实例FileSplitterFetch .P%ym~S //启动FileSplitterFetch线程 #[,= 1Od(q //等待子线程返回 Xv*}1PZH try{ r:#Q9EA if(bFirst) =f4<({9 { tWRf'n[+] nFileLength = getFileSize(); B<C&ay if(nFileLength == -1) THr8o V5 { {0fz9"|U System.err.println("File Length is not known!"); CjmV+%b4 } iRouLd else if(nFileLength == -2) -4%]QS { FRS28D System.err.println("File is not access!"); $"1pws?d } Zr9 d&|$ else 'oCm.~;_ { W7W3DBKtSm for(int i=0;i<nStartPos.length;i++) 9c6 ' { bu&;-Ynb nStartPos = (long)(i*(nFileLength/nStartPos.length)); ,P!D-MN$V } Y@ObwKcG for(int i=0;i<nEndPos.length-1;i++) SLg+H { n/?eZx1 nEndPos = nStartPos[i+1]; G#'Q~N } \P5>{2i nEndPos[nEndPos.length-1] = nFileLength; !+=Zjm4L } g?gqkoI } db^aL8
[Ek42% }D Z)W0RDe //启动子线程 w)^\_uAlS fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 6SV7\,2M for(int i=0;i<nStartPos.length;i++) Nr%(2[$ = { @+$cZ3, fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), h)^dB,~ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), P3i^S_ nStartPos,nEndPos,i); }$<^wt Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _HLC>pH~# fileSplitterFetch.start(); T0YDfo } </|)"OD9 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ))p$vU3 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); =?HzNA$yh // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", }'DC
Q nEndPos = " + nFileLength); TR~|c|B // fileSplitterFetch[nPos.length-1].start(); l 4!kxXf-< WN$R[N AvyQ4xim+ //等待子线程结束 Xthtw * //int count = 0; Zd8drT'@# //是否结束while循环 IKGTsA; boolean breakWhile = false; Y~:}l9Qs ujiZM hHCzj*5 while(!bStop) i3D<`\;r { tCX9:2c write_nPos(); Wx}M1&d/J Utility.sleep(500); O+p]3u breakWhile = true; O%fUm0O d |3S'8OeCI P`p6J8}4 for(int i=0;i<nStartPos.length;i++) :
#3OcD4 { mm_^gQ,` if(!fileSplitterFetch.bDownOver) Y 5Qb4Sa { qx Wgt(Os breakWhile = false; ^eT@!N break; >vHH } "EN98^
Sl } f( ]R/'o if(breakWhile) m{vT_ei break; ;0;3BH A y*}AX%8`e~ {EOn r1 //count++; 3aEt>x //if(count>4) Y_$^:LG // siteStop(); TG4\%S$w } be&6kG mgo'MW\ NR;q`Xe- System.err.println("文件下载结束!"); L& I`
# } =*{K@p_ catch(Exception e){e.printStackTrace ();} >BJ2v=RA } 2^cAK t6bC w/qQ(]n8 '&RZ3@}+ //获得文件长度 hm*Th public long getFileSize() tU9rCL:P { 8o! int nFileLength = -1; X
QI.0L" try{ Qe7"Z URL url = new URL(siteInfoBean.getSSiteURL()); enPzy:C HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); h |s*i httpConnection.setRequestProperty("User-Agent","NetFox"); dD[v=Z_ E^oEG4X@ p#ZMABlE,P int responseCode=httpConnection.getResponseCode(); }9MW!Ss if(responseCode>=400) |hu"5* { {fAh@:{@ processErrorCode(responseCode); j%6|:o3G( return -2; //-2 represent access is error R g%R/p)C } 2Som0T<2
rE/}hHU sqm%iyC=q String sHeader; Q.j-C}a ph Wc8[Q PFImqojHd for(int i=1;;i++) ODM>Z8@W/ { E`oSi
ez) //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); SlH7-"Ag //Utility.log(in.readLine()); $=\oJ-(!@S sHeader=httpConnection.getHeaderFieldKey(i); ;s}-X_O< if(sHeader!=null) I>N-95 { nG&w0de<> if(sHeader.equals("Content-Length")) MuCQxzvkhf { B|$\/xO nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 8r7/IGFg break; E'S<L|A/ } Up]VU9z } }0k"SwX else 9b{g+lMZo break; K9x*Sep
} !nP8ysB } J
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B catch(IOException e){e.printStackTrace ();} o=a:L^nt, catch(Exception e){e.printStackTrace ();} b?+Yo>yF8 2:smt)f &(z8GYBr Utility.log(nFileLength); :kf3_?9rc +1JZB*W : L6-{9$ return nFileLength; =y,yQO } \K4CbZ,.
6Dr$*9 PuUon6bZ //保存下载信息(文件指针位置) ;
@[.$Q@I private void write_nPos() 1xFhhncf { O"2wV +9 try{ 'vf,T4uQ" output = new DataOutputStream(new FileOutputStream(tmpFile)); @=aq&gb output.writeInt(nStartPos.length); 2WbZ>^:Nsk for(int i=0;i<nStartPos.length;i++) ek+8hnkh { z-{"pI // output.writeLong(nPos); z=8_%r output.writeLong(fileSplitterFetch.nStartPos); &CPe$'FYI output.writeLong(fileSplitterFetch.nEndPos); ]aL [ } e\|E; l output.close(); V,"AG } N2S!.H!Wz catch(IOException e){e.printStackTrace ();} lHj7O&+ catch(Exception e){e.printStackTrace ();} duiKFNYN } |)>GeE `rOe5Zp$ -*]9Ma<wa //读取保存的下载信息(文件指针位置) Y
GcY2p< private void read_nPos() ,XF6Xsg2 { EC\rh](d
1 try{ &caO*R<#J} DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); < 8W:ij.` int nCount = input.readInt(); D$^7Xhk nStartPos = new long[nCount]; !&`7 nEndPos = new long[nCount]; "78cl*sD for(int i=0;i<nStartPos.length;i++) 4HYH\ey { JY,l#?lM{ nStartPos = input.readLong(); E%v[7 ST nEndPos = input.readLong(); "> 4[+' } enfu%"(K) input.close(); ^Qb!k/$3y } /[)P^L` catch(IOException e){e.printStackTrace ();} (}7o
a9Q< catch(Exception e){e.printStackTrace ();} uJAB)ti2I } #@OKp,LJ 5x L,~" a!6OE"?QQ private void processErrorCode(int nErrorCode) y O9pEO|W { u
BW System.err.println("Error Code : " + nErrorCode); [4(A458H } oY#XWe8Om `S!uj <- d T-O8 //停止文件下载 "r `6c0Z public void siteStop() P)o[p( { oz5lt4 bStop = true; ]H@uuPT! for(int i=0;i<nStartPos.length;i++) zYl+BM-j,6 fileSplitterFetch.splitterStop(); Jv$2wH &wWGZ~T N`mC_) } iF2IR{h } f\%X7. //负责部分文件的抓取 fJN9+l **FileSplitterFetch.java Y(;[L`" */ FU3IK3} package NetFox; 3 mMdq*X5 WlJRKM2 0|3B8m import java.io.*; r-DD*'R import java.net.*; '{_tDboY kJ:5msKwC 5;%xqdD public class FileSplitterFetch extends Thread {
R5YtCw]i= FH@e:-*= X=RmCc$: String sURL; //File URL o0v m?CL# long nStartPos; //File Snippet Start Position ,PtR^" Mf4 long nEndPos; //File Snippet End Position HH7gT int nThreadID; //Thread's ID d=Ihl30m boolean bDownOver = false; //Downing is over >L3p qK
boolean bStop = false; //Stop identical 2/W0y!qh1 FileAccessI fileAccessI = null; //File Access interface uqH! eN5 "PM:&v ]5MRp7 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException p5 PON0dS { s`#j8>`M
this.sURL = sURL; KuAGy*:4T this.nStartPos = nStart; 0R{R=r] this.nEndPos = nEnd; LA(JA nThreadID = id; JQv
ZTwSI fileAccessI = new FileAccessI(sName,nStartPos);//定位 2/NWWoKw } B,qZwc| V'#u_`x"D) 0{@Ovc public void run() gM:oP. { YXOD
fd%L while(nStartPos < nEndPos && !bStop) D%}o26K.C { 0md{e`'q: , 0ja _ ziip*<a!_ try{ Ji:@z%osr URL url = new URL(sURL); um4zLsd#v HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); MA QY/s~F httpConnection.setRequestProperty("User-Agent","NetFox"); / S^m!{ String sProperty = "bytes="+nStartPos+"-"; ijSYQ httpConnection.setRequestProperty("RANGE",sProperty); Rla*hc~ Utility.log(sProperty);
MO+0]uh: ?n~j2-[< lJ2/xE ] InputStream input = httpConnection.getInputStream(); atnbM:t //logResponseHead(httpConnection); f;6d/?= ~ |W[rywxx UeTp, byte[] b = new byte[1024]; >sY+Y 22U int nRead; %Q01EjRes while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ;0{*V5A { 2o}FB\4^i nStartPos += fileAccessI.write(b,0,nRead); $fG/gYvI\ //if(nThreadID == 1) b .@dUuKz- // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); e;\c=J,eE } mSp7H! NX/)Z&Fx: !7|9r$ Utility.log("Thread " + nThreadID + " is over!"); G*V
7*KC bDownOver = true; Jx7^|A //nPos = fileAccessI.write (b,0,nRead); yQ2[[[@k@ } xrd^vE catch(Exception e){e.printStackTrace ();} =,9'O/br } TR7TF]itb } ywBo9|%T
X:bgY )]Rr:i9n //打印回应的头信息 I>|?B(F public void logResponseHead(HttpURLConnection con) Ue%5
:Sdr { ]C^*C| for(int i=1;;i++) QJ'C?hn { Nzt1JHRS String header=con.getHeaderFieldKey(i); )`0 j\ if(header!=null) }3e+D //responseHeaders.put(header,httpConnection.getHeaderField(header)); B 8,{jwB Utility.log(header+" : "+con.getHeaderField(header)); j'cS_R else M3;B]iRQD break; h<q``hn> } ~KvCb3~X } K>~l6 *O2j<3CHf Nr4Fp`b8 public void splitterStop() bR`5g { b[vE!lJEq bStop = true; &{)<Q(g } 4S(G366 '!>9j,BJ QPy h.9:N } v]JET9hY W3i<Unq
#y\O+\4e /* NT6jwK.?)? **FileAccess.java [[T7s(3 *//文件访问(定位,写) jMT[+f package NetFox; wXNng(M7
import java.io.*; 'm0WPS/6E <?7CwW /X8a3Eqp9 public class FileAccessI implements Serializable{ U<6)CW1; 2d[tcn$;h] //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 l6zAMyau5 RandomAccessFile oSavedFile; besc7!S long nPos; f:j:L79} 2e6P?pX~2 _0[z
xOI public FileAccessI() throws IOException za>%hZf\ { 8;M,l2pmR{ this("",0); Dw=L]i
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Z%#e* O0 public FileAccessI(String sName,long nPos) throws IOException c[J 2;"SP { W *0!Z:? oSavedFile = new RandomAccessFile(sName,"rw"); 2<7pe@c98 this.nPos = nPos; /}u:N:HA% oSavedFile.seek(nPos); $y;w@^ } H_g]q h`Jc%6o &"u(0q public synchronized int write(byte[] b,int nStart,int nLen) Wv>`x?W { ,WdSJ BK'a int n = -1; =Vh]{y~$ try{ Fpo}UQQbc oSavedFile.write(b,nStart,nLen); L^u|=9 n = nLen; [voc_o7AI } wgDAb#Zuk catch(IOException e) VK4UhN2 { VI3fvGHat{ e.printStackTrace (); '>[ZfT } H F*~bL }P=FMme{F( ko.%@Y(= return n; !B[Y?b: } 2w8YtM3+"z 6n:X
p_yO [/ CB1//Y } 4PC'7V=S gISA13 5i$P$ R /* AU*]D@H **SiteInfoBean.java /3+E-|4s */ G>Bgw>#_ package NetFox; yR F+ vU/sQt8 %to.'R public class SiteInfoBean { [)IaXa <-d-.
8 v&sp;%I6= private String sSiteURL; //Site's URL 823y; private String sFilePath; //Saved File's Path >iJxq6! private String sFileName; //Saved File's Name bz&9]%S< private int nSplitter; //Count of Splited Downloading File 'o_ RC{k2" 84(jg P d6W&u~ public SiteInfoBean() J_
h\tM {//nSplitter的缺省值为5 acpc[^' //default value of nSplitter is 5 <!u(_Bxw/ this("","","",5); DL_M#c`< } $~EY: hO3C _} .<P@6Jq public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) aBF<it> { sx9[#6~{Y sSiteURL= sURL; (_q&QI0{ sFilePath = sPath; )P/~{Ci:T& sFileName = sName; -mZ{.\9 this.nSplitter = nSpiltter; +c'I7bBr L'BzefU;04 5OFb9YX } 'bef3P9` zpcm`z 4.&et()} public String getSSiteURL() `O=LQ m` { <>1*1%m return sSiteURL; z:$TW{%M } Bsz;GnD|r "jl`FAu)q c_2kHT
public void setSSiteURL(String value) 8j%lM/ v { LD5E sSiteURL = value; cW $~86u"C } )\0c2_w>
XN'X&J fI(H
:N public String getSFilePath() I=`efc]T { ~R
W 6;
return sFilePath; =HvLuVc } Yc'7F7.<6 (aH_K07 Y6@A@VJ public void setSFilePath(String value) vCNYqa)m: { gs|%3k | sFilePath = value; 'uOp?g' 7 } `Tf<w+H :!EOg4%i QPa&kl public String getSFileName() ]pA}h.R#- { >&9Iy" return sFileName; {z%%(,I } <BN)>NqM U`"nX)$ L``K. DF public void setSFileName(String value) _zO,VL { "|"bo5M: sFileName = value; 'x10\Q65[ } ]urcA,a f;%4O' *K\/5Fzl public int getNSplitter() Hca)5$yL { x2TCw return nSplitter; 2S8/
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} D`.CXFI+U B: uW(E
o0Hh&:6!M public void setNSplitter(int nCount) _B|g)Rdv { 8DLMxG nSplitter = nCount;
n/UyMO3= } p<6pmW3 } 4S.%y7d\ +B'9!t4 2 A\.M/)Qo /* s\Cl3 **Utility.java <OW` )0UX */ J]|-.Wv1 package NetFox; /gHRJ$2|Sx -]PW\}w1 f.'o4HSj public class Utility { zYj8\iER A0WQZt!FEN +]|J public Utility() mnXaf)" { w];t ]q| #,
vN R{6.O+j` } oc-7gz) JT<Ia //线程睡眠 "Rs^0iT7> public static void sleep(int nSecond) }kXF*cVg { T0RgCU
IV try{ 6576RT Thread.sleep(nSecond); NCSb`SC: } Ra_6}k catch(Exception e) mKnkHGM { ]Wv\$JXI e.printStackTrace (); n2Ycq&O } kRE^G*? } S)$ES6]9/ n&[U/`o //日志 -\>Bphu,y public static void log(String sMsg) ;Cyt2]F { t_@%4Wn!1L System.err.println(sMsg); }N4=~'R } %qfEFhRC ~`mOs1 d Yw+_( 2
9= public static void log(int sMsg) Ty#L%k}-t { t91v%L System.err.println(sMsg); N9:xtrJ]_J } Z:9"7^+ } "2 qp-'^[c uj;-HN)6 P7"g/j" " /* bv$)^ **TestMethod.java M.!U;U<? */ o& $Fc8bH package NetFox; oe4Fy}Y_; aeE9dV~ i~.L{K public class TestMethod { A^
t[PKM" G4MNcy i v&:X3iB public TestMethod() cq
%=DZ { ///xx/weblogic60b2_win.exe hq$:62NYg try{ e/F=5_Io SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); m/%sBw\rx //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); =f{V<i~q SiteFileFetch fileFetch = new SiteFileFetch(bean); 4 K{4=uU fileFetch.start(); &d 9tR\} } % nP13V] catch(Exception e){e.printStackTrace ();} +;pdG[N lJu2}XRiU ~%k<N/B } Iz!Blk ^cDHyB=v4d !YsLx[+ public static void main(String[] args) -GDX#A-J { xv9SQ,n< new TestMethod(); *ukugg. } X@5!I+u\L } 'X"@C;q 点击下载更多相关资料
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