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/* w~9=6|_ **SiteFileFetch.java cm7>%g(oQo */
?#;zB package NetFox; @)wNINvD import java.io.*; ~{O@tt)F import java.net.*; =gr3a,2 {~d8_%:b +4p gPv public class SiteFileFetch extends Thread { Vt,"5c I:#Es. nR~L$Wu5_a SiteInfoBean siteInfoBean = null; //文件信息Bean (hX}O> long[] nStartPos; //开始位置 & 5YI!; q, long[] nEndPos; //结束位置 xSHeP`P^X FileSplitterFetch[] fileSplitterFetch; //子线程对象 '||),>~ long nFileLength; //文件长度 AJH-V
6 boolean bFirst = true; //是否第一次取文件 jG3i
)ALx boolean bStop = false; //停止标志 Q|}Pc>ae File tmpFile; //文件下载的临时信息 AU
+2' DataOutputStream output; //输出到文件的输出流 s8N\cOd#i w,FOq?j^k //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) f9 b=Zm' public SiteFileFetch(SiteInfoBean bean) throws IOException m)9qO7P { 2L_ts= siteInfoBean = bean; bMw)>4 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); lTv_%hUp tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); !M&B=vk4 if(tmpFile.exists ()) G(~"Zt}? { (yel bFirst = false; M e read_nPos(); U8KEg)Msk } f)+fdc else L$+ap~ld { SW%d'1ya nStartPos = new long[bean.getNSplitter()]; VXAgp6 nEndPos = new long[bean.getNSplitter()]; zZ=.riK } :xT=uE.I Ls^$E 9m
fYB B/CP/Pfb } ^*]0quu=z :bgi*pR{ WV"{oED public void run() 8V(#S:G35 { Q04iuhDO: //获得文件长度 x+9aTsZ //分割文件 GxGZxf*( //实例FileSplitterFetch %h%^i
//启动FileSplitterFetch线程 s^$zOp9 //等待子线程返回 lLT;V2=osX try{ xCV3HnZ if(bFirst) =ITMAC\ { <zK9J?ZQW> nFileLength = getFileSize(); ,9f$an if(nFileLength == -1) B/Lx, { q<b;xx System.err.println("File Length is not known!"); (k..ll p~ } J,E'F!{ else if(nFileLength == -2) h^5'i}@u { Ui46p System.err.println("File is not access!"); "rr,P0lgX } |!)3[<. else g9;}?h { }_L@CpG for(int i=0;i<nStartPos.length;i++) v:<UbuJw { KPUc+`cN% nStartPos = (long)(i*(nFileLength/nStartPos.length)); &k?Mt#J } <c{RY.1[ for(int i=0;i<nEndPos.length-1;i++) -_ [Z5%B { #$Z|)i]w nEndPos = nStartPos[i+1]; 94F9f^ L } wYS,|=y nEndPos[nEndPos.length-1] = nFileLength; QO)Q%K, } 16YJQ ue } Ov)rsi A|YqBl vF;%#P //启动子线程 ;ePmN|rq; fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; *"Ipu"G5? for(int i=0;i<nStartPos.length;i++) dQt*/]{q { LRv-q{jP; fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), XH0R:+s siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?/~7\ '|Z nStartPos,nEndPos,i); xU^Flw,4 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); uM0z%z5b fileSplitterFetch.start(); F[c;iM(^ } n}yqpW!%n // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), q"A( l siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;#!`cgAh // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", lFD$Mc nEndPos = " + nFileLength); ~'HwNzDQc // fileSplitterFetch[nPos.length-1].start(); Ajhrsa\~a !+T+BFw. %?C{0(Z{ //等待子线程结束 gRKmfJ*u //int count = 0; +MeEy{; //是否结束while循环 pscCXk(|A` boolean breakWhile = false; 0%+T U4Xx G;MgrA#\ <vA^%D<\~ while(!bStop) Y=4 ,d4uu { }$;T.[ ~ write_nPos(); l9q
ygh Utility.sleep(500); e4ajT breakWhile = true; "S^;X
@#v |9!3{3 Vr f` :% for(int i=0;i<nStartPos.length;i++) d;(L@9HHD { Ni{(=&*= if(!fileSplitterFetch.bDownOver) /H,!7!6>? { j+J)S1 breakWhile = false; a)[XJLCQ break; EZc!QrY } p/'C
v } w=3@IW if(breakWhile) zie])_8|h break; DCmNxN cu|#AW *KFsO1j //count++; !/['wv@ //if(count>4) M\8FjJ>9 // siteStop(); 3`k1 } ho@f}4jhQ3 j46fQ c:51In|~{C System.err.println("文件下载结束!"); GOa](oD} } 2anx]QV4 catch(Exception e){e.printStackTrace ();} V4 Pf?g } (( Ec:(:c F1)Q#ThF\ &H,j
.~a&l //获得文件长度 Hv<%_t_/ public long getFileSize() aM3%Mx?w { f| 3`8JU int nFileLength = -1; OtF{=7 try{ VE6T&fz` URL url = new URL(siteInfoBean.getSSiteURL()); yK0Q, HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #v')iR"
httpConnection.setRequestProperty("User-Agent","NetFox"); X
c,UR. ^Q4w<sX' C_PXh>H]' int responseCode=httpConnection.getResponseCode(); [FC7+
Ey^ if(responseCode>=400) 7|T5N[3?l, { RoLUPy9U processErrorCode(responseCode); ]^&DEj{ return -2; //-2 represent access is error {{[).o/ } /^#k/z E[t\LTt*n i,S%:0c7) String sHeader; v(=fV/ r NqJL_! nV
McHN for(int i=1;;i++) =q^o6{d0" { W2yNEiH //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); bUAjt>+ //Utility.log(in.readLine()); LlRvm/ sHeader=httpConnection.getHeaderFieldKey(i); =1^Ru*G if(sHeader!=null) *WfOB2rU { +yS"pOT if(sHeader.equals("Content-Length")) g;\zD_":l { ^Cyx"s't nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); x7l)i!/$ break; 2#*Bw= } H<%7aOwO2 } 0[T!}F^%e else NV*aHci break; aAwnkQ$
} :I F&W=?9 } 1
xiq]~H catch(IOException e){e.printStackTrace ();} t\{q,4 catch(Exception e){e.printStackTrace ();} GfJm&'U& 0X0HDQ &EXql'] Utility.log(nFileLength); .pi#Z/v ;#3!ZB:} fbwo2qe@K return nFileLength; Q2^}NQO= } E`XUK,b 3l`yy])t *0l^/jqn: //保存下载信息(文件指针位置) . ~G>vVb private void write_nPos() h}z^NX { T
{(6*^g<B try{ w^p
'D{{ output = new DataOutputStream(new FileOutputStream(tmpFile)); zBB4lC{q output.writeInt(nStartPos.length); "KW\:uc / for(int i=0;i<nStartPos.length;i++) QCa$<~c { /%Rz`} // output.writeLong(nPos); g*-
K!X6l output.writeLong(fileSplitterFetch.nStartPos); i <bFF03*S output.writeLong(fileSplitterFetch.nEndPos); mmTc.xh } &]pW## output.close(); TxN#3m?G } R7x4v catch(IOException e){e.printStackTrace ();} Si6%6rAhj catch(Exception e){e.printStackTrace ();} ;r^8In@6 } 6g@j,iFy ^z9ITGB~tV m{_\@'q //读取保存的下载信息(文件指针位置) vay_QxB5 private void read_nPos() (IIOKx _ { d|j3E try{ 'e7<&wm ia DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 8Th|' int nCount = input.readInt(); SG8|xoL nStartPos = new long[nCount]; ~e~4S~{ nEndPos = new long[nCount]; D>?%p"e for(int i=0;i<nStartPos.length;i++) I#Iu:,OT { K}`.?6O nStartPos = input.readLong(); kIrME: nEndPos = input.readLong(); qK.8^{b } jf*M}Q1jHE input.close();
7I^(vQ } GLnj& Ve catch(IOException e){e.printStackTrace ();} %OfaBv& catch(Exception e){e.printStackTrace ();} 8$OE<c?#5n } 22}J.'Zb .9lx@6]+ _s|C0Pt private void processErrorCode(int nErrorCode) ~hE"B)
e { tE3!; System.err.println("Error Code : " + nErrorCode); < I8hy$+6 } {/XzIOO;b .FqbX5\p, !wJ~p:vRdY //停止文件下载 B6MMn. public void siteStop() k
U*\Fa*E { 1W$ @ V! bStop = true; 8!b#ez for(int i=0;i<nStartPos.length;i++) MHI0>QsI fileSplitterFetch.splitterStop(); mAk)9`f/ >e=tem~/ eDX{}Dq( } EXS
1.3> } y''`73U" //负责部分文件的抓取 ;5PXPpJ **FileSplitterFetch.java tP"C>#LO */ zK k;&y|{ package NetFox; Iy8Ehwejd tL 3]9qfj 9{'GrL import java.io.*; Jq<&`6hn import java.net.*; 8"N<g'Yl, *-3K],^a }/SbmW8(1 public class FileSplitterFetch extends Thread { qg'RD]a> R la</IpC ,wlFn String sURL; //File URL n0>#?ek12 long nStartPos; //File Snippet Start Position &}OaiTzEmc long nEndPos; //File Snippet End Position )f*&}SV int nThreadID; //Thread's ID $*H_0w Qc boolean bDownOver = false; //Downing is over pLDseEr< boolean bStop = false; //Stop identical ht!o_0{~ FileAccessI fileAccessI = null; //File Access interface k9.@S vCFMO3 `rbTB3? public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException C6M|A3^T { crz )F" this.sURL = sURL; VI74{='= this.nStartPos = nStart; aVNRhnM this.nEndPos = nEnd; rs]%`"&= nThreadID = id; g&`e2|[7 fileAccessI = new FileAccessI(sName,nStartPos);//定位 #[qmhU{s } k9~NIvnB` !L2R0Y:a (5cc{zKtR public void run() l"f.eo0@7 { d2Z5HFtY while(nStartPos < nEndPos && !bStop) 4sP0oe[h { PL@hsZty~c UP58Cln* X#Y0g`muW try{ 8uP,#D<wZ URL url = new URL(sURL); GXr9J rs.e HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); J LT10c3 httpConnection.setRequestProperty("User-Agent","NetFox"); #@w8wCj String sProperty = "bytes="+nStartPos+"-"; lr=? &>MXj httpConnection.setRequestProperty("RANGE",sProperty); iyB02\d Utility.log(sProperty); 9 ]c2ub7 g1@zk$ Q]S~H+eRy InputStream input = httpConnection.getInputStream(); 5@%$M$E //logResponseHead(httpConnection); MT[V1I{LV ?w#V<3= aqQ
YU5l4~ byte[] b = new byte[1024]; 6y)TXp int nRead; f7Y0L8D while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) @i'RIL} { Q})x4 nStartPos += fileAccessI.write(b,0,nRead); b^~ keQ //if(nThreadID == 1) A5S9F8Q/] // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 1p[C5j3 } <4ccT l ` .|JTm[ [a:yKJ[ Utility.log("Thread " + nThreadID + " is over!"); ,|D_? D)U bDownOver = true; umaF}}-Q{ //nPos = fileAccessI.write (b,0,nRead); Dq/_^a/1 } )a
AKO` catch(Exception e){e.printStackTrace ();} -*~= 4m< } Dt%Gv0 } \T`InBbf wN>k&J k|k //打印回应的头信息 5^<X:1J$ public void logResponseHead(HttpURLConnection con)
EiQX*v { 9utiev~3 for(int i=1;;i++) ![h+R@_( { pM],-7UM String header=con.getHeaderFieldKey(i); )e(Rf!P{ if(header!=null) UbNA|`H //responseHeaders.put(header,httpConnection.getHeaderField(header)); jfP2n5X83 Utility.log(header+" : "+con.getHeaderField(header)); \3JZ=/ else m\o<a| break; 3=5K7F } K+ZJSfO6 } dw#K!,g #?\$*@O $M{MOehZ public void splitterStop() Xb?:dlu3 { tS!FnQg4 bStop = true; Veo*-sl } _0N=~`' !m"LIa#/Cs \X.CYkgK } a\;1%2a ZG[P?fM 8mj Pa^A /* v%v(-, _q **FileAccess.java '#RzX8|v< *//文件访问(定位,写) K2$ fKju package NetFox; kW#,o 9f\ import java.io.*; XtY!fo* 1N6.r:wg)% +`tl<rg; public class FileAccessI implements Serializable{ 4<}!+X7m yMaU`z //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 8=QOp[w RandomAccessFile oSavedFile; x93h{Kf long nPos; z"#iG&>a, )3K# ${p .c__<I<G<
public FileAccessI() throws IOException EQ
'L" { )4:K@ this("",0); Loz5[L } gZA[Sq I|zak](HU CD]hi,B_J public FileAccessI(String sName,long nPos) throws IOException o>WB,i^ G { <Qg).n>;z oSavedFile = new RandomAccessFile(sName,"rw"); 8(-V pU this.nPos = nPos; 4/KGrY!ck oSavedFile.seek(nPos); 4<V%7z_.B } 3y^PKIIrt %Ms"LoK X$*MxMNs public synchronized int write(byte[] b,int nStart,int nLen) dbn9t7'{ { O[}{$NXw int n = -1; zs/4tNXw try{ `+DH@ce oSavedFile.write(b,nStart,nLen); h?_Cv*0q n = nLen; K[wny0 ( } eTg8I/)%B catch(IOException e) "/e_[_j { (LiS9|J! e.printStackTrace (); :ohGG ,`Dh } d}D%%noIu \Ui3=8( k;5$]^x return n; 42/MBP`\Y } !8g419Yg Xir ERc.e ')R+Z/hG. } w8=&rzr8 SEf RU` r]q;>\T' /* f^JiaU4 [ **SiteInfoBean.java 5(wmy-x\ */ @!p bR(8 package NetFox; EPEWyGw 8y:/!rRN ;x<5F+b public class SiteInfoBean { mJxr"cwHl (vX)
<Z
! Zv]'9,cbk private String sSiteURL; //Site's URL M)x6m|.= private String sFilePath; //Saved File's Path 0Q7teXRM private String sFileName; //Saved File's Name ( p(/ private int nSplitter; //Count of Splited Downloading File yMG(FAyu z*V 8l* (Q5rOrA" public SiteInfoBean() 9sP;s^#t7U {//nSplitter的缺省值为5 j_I[k8z //default value of nSplitter is 5 In[rxT~K}Q this("","","",5); BiY-u/bH9a } zA%YaekJ mkE_ a> Sp7VH+ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) R$XHjb) { WC Tmf8f sSiteURL= sURL; e{Q;,jsh sFilePath = sPath; ai7R@~O:_k sFileName = sName; n~"qbtp} this.nSplitter = nSpiltter; BGd# \2 Bd'X~Vj< ?"F9~vx&G } ol0i^d*9F ^ps6\>=0cW @4t_cxmD public String getSSiteURL() 7vo8lnQ{ { 4,,DA2^! return sSiteURL; %p48=|+ } _sb~eB~<( HVJqDF a8WWFAC[ public void setSSiteURL(String value) }/w]+f* { m?<^b_a} sSiteURL = value; ~8 B] } {+~ JTrp -uKTEG[ Ypx5:gm|J public String getSFilePath() 0OXl`V`w { A"e4w? return sFilePath; +>&i]x(b } YdZ9##IU3 #<LJns\t
z''ejq public void setSFilePath(String value) 85x34nT { o%b6"_~%3 sFilePath = value; bm*.*A] } &6^ --cc oVTXn=cYDp 216`rQ}z public String getSFileName() 2Z-[x9t { 7|HIl= return sFileName; 4se6+oJe } E<ILZpP r6eZ-V`4 _1?nLx7n public void setSFileName(String value) w%?Zb[!& { 5tI#UBha sFileName = value; zv7)JH7EV& } \0W0 o5c$ GlHP`&;UH mm9uhlV8 public int getNSplitter() =F2`X#x_j { {2%'=v return nSplitter; `;=-71Gn~ } p[O\}MAd# 86pA+c+U
0ijYE public void setNSplitter(int nCount) %a I,K0\ { i zYC0T9 nSplitter = nCount; ken.#>w } y|0!sNg } <vE|QxpR yH(3 m# q@G}Hjn /* o}&{Y2!x **Utility.java ]v/pMg#- */ ,#czx3?4 package NetFox; C hQ] d nQOzKw<j% TI}a$I* public class Utility { dVPY07P K.=5p/^a =van<l4b#n public Utility() (wFoI}s { 27+~!R~Yw F( 4Ue6R `g_r<EY8/ } m^\&v0 A/"<o5(T(P //线程睡眠 Y_}_)nE@m public static void sleep(int nSecond) UGlHe7 { 76o3Sge: try{ 7|o!v);uR Thread.sleep(nSecond); k*u6'IKi.4 } a)4%sX*I
catch(Exception e) .EPv4[2%F8 { Qqi?DW1)- e.printStackTrace (); Z4X, D`s } Uqz.Q\A } QI'-I\Co NiFe#SLA //日志 .R@s6}C`}= public static void log(String sMsg) aZ|?i
} { em95ccs'- System.err.println(sMsg); =W;e9 6# } sq;!5qK S[gACEZ = 3~Lsa"/ public static void log(int sMsg) c5| sda{ { Vo6+| ztk| System.err.println(sMsg); vsyg u } n=PfV3B } u(fZ^ lu6iU C(9"59>{]y /* P^# 4m **TestMethod.java Y]*&\Ex"\ */ %Oo
f/q package NetFox; \4LTViY] Fg 8lX9L ^Vhl@ public class TestMethod { IBvn
q8\ e/_QS}OA pGfGGY>i% public TestMethod() s_}6#; { ///xx/weblogic60b2_win.exe ZPY&q&R try{ >&Oql9_ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); BzzZ.AH~ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Vhh=GJ SiteFileFetch fileFetch = new SiteFileFetch(bean); 2X[oge0@ fileFetch.start(); eX>*}pI } Gov.;hy catch(Exception e){e.printStackTrace ();} qo$ls\[X yoJ.[M4q Q-!gO } hkyO_ns 9J~\.:jH- j:qexhtho public static void main(String[] args) ^%!SKhRIK { ";7xE#jRk new TestMethod(); ;c)(
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