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/* piIZ*@' **SiteFileFetch.java Q}#4Qz~n */ 8%4;'[UV package NetFox; Y58H.P import java.io.*; Zf M]A) import java.net.*; e.\>GwM 2d[tcn$;h] w+m7jn!$ public class SiteFileFetch extends Thread { 5N9Cd[4 `JIp$ 1@Ba7>%' SiteInfoBean siteInfoBean = null; //文件信息Bean H c/7x). long[] nStartPos; //开始位置 e`Yj}i*bx] long[] nEndPos; //结束位置 su0K#*P&I
FileSplitterFetch[] fileSplitterFetch; //子线程对象 za>%hZf\ long nFileLength; //文件长度 ~HY)$Yp; boolean bFirst = true; //是否第一次取文件 e_-g|ukC boolean bStop = false; //停止标志 ]W3u~T* File tmpFile; //文件下载的临时信息 #jbC@A9Pe DataOutputStream output; //输出到文件的输出流 l@4pZkdq e"@r[pq-{u //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) G-CL \G\n public SiteFileFetch(SiteInfoBean bean) throws IOException D(z#)oDr { U& GPede siteInfoBean = bean; (~@.9&cBD //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); S1k*">< tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Q_T,=y if(tmpFile.exists ()) |@d(2f8 { %<~Ewno T bFirst = false; [,bJKz)a read_nPos(); fD%/]`y } J5b3r1~D"[ else /@"mQx~[q { kr$)nf nStartPos = new long[bean.getNSplitter()]; =u0=)\0@r nEndPos = new long[bean.getNSplitter()]; "'BDVxp'w } r6j[C"@ !19T=p/:$ -cUW,>E 3 EAr=E] } JP!e'oWxi 9#H0|zL CCpRQKb= public void run() /A5=L<T6F { czw:xG!& //获得文件长度 (,"%fc7<i //分割文件 padV|hF3(e //实例FileSplitterFetch ]:ca=&> //启动FileSplitterFetch线程 6cg,L:j# //等待子线程返回 9u~C?w try{ L^u|=9 if(bFirst) ?23J(;)s { )^UqB0C6^ nFileLength = getFileSize(); -0uGzd+m* if(nFileLength == -1) A?tCa*b^ { "eoPG#]& System.err.println("File Length is not known!"); 0MT?}D&TL } uWGp>;m eO else if(nFileLength == -2) '>[ZfT { TaF*ZT2 System.err.println("File is not access!"); i K@RQi } +;H=_~b else 4FnePi~i { DKo6lP` for(int i=0;i<nStartPos.length;i++) |yNyk7~ { EAY+#>L* nStartPos = (long)(i*(nFileLength/nStartPos.length)); q2k}bb + } -X *.scw for(int i=0;i<nEndPos.length-1;i++) !}A`6z { 4PC'7V=S nEndPos = nStartPos[i+1]; y2k's } %AV3eqghCg nEndPos[nEndPos.length-1] = nFileLength; UB] tKn } ,>g(%3C } PazWMmI :z?T/9,C HJr*\%D}1 //启动子线程 MPp:EH fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; //G&=i$ for(int i=0;i<nStartPos.length;i++) **AJFc { vU/sQt8 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), h*4wi.- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "%
i1zQo& nStartPos,nEndPos,i); ;8F6a:\v Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <)cmI .J3 fileSplitterFetch.start(); ,:.8s>+i } KW0KXO06a // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), c5CxR#O siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7F~Jz*,B*W // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", b6 g9! nEndPos = " + nFileLength); 9~,!+# // fileSplitterFetch[nPos.length-1].start(); i(u zb< : Q,O: Z(E.F,k //等待子线程结束 bz&9]%S< //int count = 0; HVC|0} //是否结束while循环 :U1V 2f'l3 boolean breakWhile = false; R^E-9S\@ (1,4egMpR uxrNkZia while(!bStop) Ux,dj8=o { F&/}x15 write_nPos(); p<VW;1bt5 Utility.sleep(500); 4J[bh breakWhile = true; Z\-Gr
2k 9 Up>e Rlr[uU_ for(int i=0;i<nStartPos.length;i++) */]1?M@P) { =0@ o(#gM if(!fileSplitterFetch.bDownOver) Mi!ak { OOsd*nX/ breakWhile = false; 3e[k 9` break; (_q&QI0{ } d{^K8T3 } d[(%5pw~zL if(breakWhile) -mZ{.\9 break; 5o|u!#6 or`"{wop L'BzefU;04 //count++; :Ea]baM" //if(count>4) {-IRX)m* // siteStop(); `Q^Vm3h } k/xNqN( BW)t2kR& zHj_q%A System.err.println("文件下载结束!"); KrECAc } `O=LQ m` catch(Exception e){e.printStackTrace ();} -}JRsQ+rgM } atFu
KYI !hPe*pPVV) ^q~.5c| //获得文件长度 (7aE!r\Ab public long getFileSize() Bq:: 5,v { [h
:FJ int nFileLength = -1; I'cM\^/h try{
BgG+ URL url = new URL(siteInfoBean.getSSiteURL()); HQ|{!P\/?U HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); TLzcQ | httpConnection.setRequestProperty("User-Agent","NetFox"); m+'X8}GC#O an?g'8! r: PDh1*bf{u int responseCode=httpConnection.getResponseCode(); wa9{Q}wSa if(responseCode>=400) )&elr,b/y { Boa?Ghg processErrorCode(responseCode); 20uR? /|@ return -2; //-2 represent access is error *r3u=oWb } -aMwC5iR@ [C~{g# jr5x!@rb String sHeader; _nnl+S>K \RP=Gf Yc'7F7.<6 for(int i=1;;i++) @*LESN>T@t { YI?y_S //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Y6@A@VJ //Utility.log(in.readLine()); ].w$b)G sHeader=httpConnection.getHeaderFieldKey(i); }oTac if(sHeader!=null) ~&IL>2-B { (3G]- if(sHeader.equals("Content-Length")) k@R)_,2HH { 80M4~'3 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); KK*"s^L break; ?+#E&F } >7V&pH' } M*c`@\ else CD0SXNi"zH break; .!t'&eV } h:+>=~\ } ZjJEjw catch(IOException e){e.printStackTrace ();} WS0RvBvb catch(Exception e){e.printStackTrace ();} Wm ?RB0 ,
v6[#NU_Z ex2*oqAdX Utility.log(nFileLength); Ih95&HsdC }FRyG% Icf@uQ6 return nFileLength; 9X{aU)"omQ } t
UW'E (iiyptJ tL4xHa6v] //保存下载信息(文件指针位置) 'x10\Q65[ private void write_nPos() \bb,gRfP { MhB kr{8 try{ p.1|bXY` output = new DataOutputStream(new FileOutputStream(tmpFile)); f;%4O' output.writeInt(nStartPos.length); m[u
6<C for(int i=0;i<nStartPos.length;i++) 1<qq6 9x { ^Q_0Zq^H // output.writeLong(nPos); *%cI,}% output.writeLong(fileSplitterFetch.nStartPos); jKu"Vi|j> output.writeLong(fileSplitterFetch.nEndPos); A|@d4+ } L*VGdZ output.close(); ;z7iUke0% } DI!l.w5P_ catch(IOException e){e.printStackTrace ();} nyPA`)5F0 catch(Exception e){e.printStackTrace ();} D058=}^HE } : C;=<$ P>kS$U) r jL%M'; //读取保存的下载信息(文件指针位置) U07n7`2w private void read_nPos() Nr7MSFiL { p<6pmW3 try{ 15gI-Qb DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); JWrvAM$O int nCount = input.readInt(); +B'9!t4 2 nStartPos = new long[nCount]; p2y
h nEndPos = new long[nCount]; gzHjD-g-< for(int i=0;i<nStartPos.length;i++) s\Cl3 { {N;XjV1x nStartPos = input.readLong(); 5kJ>pb$/ nEndPos = input.readLong(); Md[nlz } U]ouBG8/ input.close(); x<=+RYz#^: } Xf9VW}`*8 catch(IOException e){e.printStackTrace ();} 8c3X9;a catch(Exception e){e.printStackTrace ();} )mZ`j. } A0WQZt!FEN W~Mj6c~S" &ze'V
, : private void processErrorCode(int nErrorCode) jvm
"7)h { ipKkz System.err.println("Error Code : " + nErrorCode); ;mo}$^49* } L1"X`Pz[} !cE)LG F{f "xM //停止文件下载 T cSj`- public void siteStop() -D.6@@%Kc} { JT<Ia bStop = true; >1mCjP for(int i=0;i<nStartPos.length;i++) TiF$',WMv fileSplitterFetch.splitterStop(); }kXF*cVg J/wot,j^ FAU^(]-5m } ;Z.}~d6>! } F+L q //负责部分文件的抓取 g >-iBxml **FileSplitterFetch.java K#F~$k|1B */ z6FG^ package NetFox; o~^hsm[44J D@4hQC\ A"z') import java.io.*; P RX:*0 import java.net.*; <6n(a)L1 Yq)
wE|k/ \&AmX8" [ public class FileSplitterFetch extends Thread {
6z=:x+m iQin|$F_O wTIOCj String sURL; //File URL ";",r^vr\ long nStartPos; //File Snippet Start Position Fz)z&WT long nEndPos; //File Snippet End Position t_@%4Wn!1L int nThreadID; //Thread's ID
{v]A`u) boolean bDownOver = false; //Downing is over c+|,2e
0T boolean bStop = false; //Stop identical a50{ gb# FileAccessI fileAccessI = null; //File Access interface zc,fJM &sWq SS U#,2et6 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException XF{}St~ ( { 31YzTbl[H this.sURL = sURL; )Cyrs~ this.nStartPos = nStart; d%4!d_I< this.nEndPos = nEnd; U4zyhj nThreadID = id; tq>QZEg fileAccessI = new FileAccessI(sName,nStartPos);//定位 eyl+D sK } m[ txKj.=_ Sjj &n S #xE"]; public void run() yZA}WTGe { "o}3i!2Qr while(nStartPos < nEndPos && !bStop) U4O F{ { tX Z5oG7 vVZ@/D6w V!3O
1 try{ /o![%&-l URL url = new URL(sURL); =?T'@C HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @;d(>_n httpConnection.setRequestProperty("User-Agent","NetFox"); aLuxCobV String sProperty = "bytes="+nStartPos+"-"; LYavth`@h httpConnection.setRequestProperty("RANGE",sProperty); Eh0R0;l5> Utility.log(sProperty); OES+BXGX i>q]U:U 0P\)L`cG InputStream input = httpConnection.getInputStream(); {o5E#<) //logResponseHead(httpConnection); Ck(D:
% ~s %,-vmqr 0j4bu}@ byte[] b = new byte[1024]; 6#.z:_ int nRead; qeSxE`E" while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >K;p+( <6 { 8KT|ixs nStartPos += fileAccessI.write(b,0,nRead); SAc}5. //if(nThreadID == 1) m_Z%[@L // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); XrtB&h|C } ~0t]`<y= tX&Dum $ GZ
UDI# Utility.log("Thread " + nThreadID + " is over!"); +;pdG[N bDownOver = true; [|xHXcW //nPos = fileAccessI.write (b,0,nRead); UFm E`|le } ~%k<N/B catch(Exception e){e.printStackTrace ();} VGA?B@ } q9yY% }
"+r8izB 7oh6G ]6W#P7 //打印回应的头信息 B.;/N220P public void logResponseHead(HttpURLConnection con) -`FTWH { >j_,3{eJ for(int i=1;;i++) TR5"K{WDx { :_i1)4[! String header=con.getHeaderFieldKey(i); GmPNzHDb if(header!=null) +KrV!Taf //responseHeaders.put(header,httpConnection.getHeaderField(header)); rM<c;iQ Utility.log(header+" : "+con.getHeaderField(header)); S;a{wYF6v else \O^b|0zc break; D%Hz'G0| } -?&wD["y } UP 75}h9 73rr">
9#0 S3`zB?7, public void splitterStop() ke2'?,f { 0^5SL/2 bStop = true; `\(Fax } 7?qRY9Qu uf^"Y3 89U<9j } P+wV.pF| Wb68" )$ }.$oZo9J /* uK="#1z cC **FileAccess.java +kd88Fx *//文件访问(定位,写) e$4 5 OL package NetFox; Ma:xxsH. import java.io.*; "+[:\ S`5^H~ x0?8AG% public class FileAccessI implements Serializable{ i_)j K NELQo#kjZ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 1K"``EvNB RandomAccessFile oSavedFile; KFkKr>S: long nPos; "$;=8O5O "/[-U;ck W> s@fN9 public FileAccessI() throws IOException KtA0
8?B { w6'o<= this("",0); nMNAn}~*M } sFC&DTb? Bi]`e_(} #'mb9GWD3 public FileAccessI(String sName,long nPos) throws IOException M6jP>fbV* { 2(YZTaY oSavedFile = new RandomAccessFile(sName,"rw"); uB>NwCL; this.nPos = nPos; P)XkqOGpT9 oSavedFile.seek(nPos); C=t:0.:PJ } -P]J:7*0?\ M3Q#=yy$D$ G9<pYt{: public synchronized int write(byte[] b,int nStart,int nLen) tY C`?HT { - (VV int n = -1; `Yn^ -W try{ [#fXmW>N/ oSavedFile.write(b,nStart,nLen); KM*sLC# n = nLen; 4r\Sbh } KwlN catch(IOException e) ]0GOSh { aEW
Z*y e.printStackTrace (); U\&kT/6vh }
? }|;ai :+|b7fF :@I?JSi return n; mR,p?[P } z1aApS WIb\+! 4tz8^z[Kw } a\$PqOB! i,NN" N'+d1 /* L[)+J2_< **SiteInfoBean.java 2T<QG>;)j */ URck#5 package NetFox; "!i7U2M' :c"J$wT/ nchhNU public class SiteInfoBean { xG
7;Ps4L >G92k76G m0t5oO private String sSiteURL; //Site's URL WW2VW-Hk private String sFilePath; //Saved File's Path E1_FK1*V; private String sFileName; //Saved File's Name !T@>Ld: private int nSplitter; //Count of Splited Downloading File b#FN3AsR =i~/.Nu& l7Y^C1hM public SiteInfoBean() 5m&{f>]T {//nSplitter的缺省值为5 v_J\yW'K //default value of nSplitter is 5 o^wj_#ai$ this("","","",5); WZ&/l 65J } Ih!UL:Ckh [&k[k) `9B xDp]I public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) M.1R]x(| { -N(y+~wN sSiteURL= sURL; { dhuvB sFilePath = sPath; '\H {Y[ sFileName = sName; 6C9KT;6 this.nSplitter = nSpiltter; Z%\9y]zs dt{|bQLu3 P1]ucu_y, } -q[T0^eS Ne,7[k RX4O1Z0 public String getSSiteURL() )/PvaL { ^ ]SS\=7 return sSiteURL; D "j
=|4S# } TKvUBy di]z zNuiBLxDs public void setSSiteURL(String value) cRsLt/Wr { %gSqc
}v* sSiteURL = value; + 1\1Z@\M } 4JKB6~Y Vj_(55WQ g3 6oEz~| public String getSFilePath() 8Y3c,p/gS> { ;Jr6 return sFilePath; eft-]c+*0 } {H#1wu^]O$ YiB]}/ Qzw~\KY: public void setSFilePath(String value) {6^c3R[
{ C_dsYuQ5R sFilePath = value; ~;_]U[eOL } GeWB"(t E)3B)(@&P PvBx<i}A public String getSFileName() {J%Na&D { N5#qox$D return sFileName; ZZA!Y9ia2 } YR'?fr E0$UoP
9*GwW&M%1_ public void setSFileName(String value)
B]ul~FX { H"WkZX sFileName = value; 5)'
_3r } x=Qy{eIe \xkLI:*\ V^QKn+/ public int getNSplitter() 8 Mp2MZ*p { gZuk( return nSplitter; N(vzxx^ } cR}}N F +"Ih'bb`j bITOA public void setNSplitter(int nCount) #HWz.Wb { 7Gnslp?[U nSplitter = nCount; %eGxQDIXg } 0{F"b'h } DalQ. yA?>v'K xr&wV0O'
/* fO[X<|9 **Utility.java `J[(Dx'y=t */ Bwjd/id q package NetFox; v]F q}I" o+;=C@,' \=Af AO@ public class Utility { k(C?6Gfj '!Ps4ZTn_ T~cq= i|O public Utility() $^
(q0zR~l { >hoIJZP, X_C9Z ;_amgRP7$ } TP{lt6wws( a3?Dtoy' //线程睡眠 -b~MQ/,2 public static void sleep(int nSecond) ih.UzPg { </t_<I0{ try{ 1iS9f~ Thread.sleep(nSecond); `]\4yTd } 'G>Ejh@t catch(Exception e) x5v^@_:
jr {
2_vE e.printStackTrace (); (9';zw
} LeO
)) } Qc;`nck WLiY:X(+| //日志 1,`-n5@J%n public static void log(String sMsg) rtvuAFiH { - >n<9 System.err.println(sMsg); <Xm5re. } Oh6;o1UI daaUC FI.S?gy0 public static void log(int sMsg) a[\,K4l { S+ymdZ)xZ` System.err.println(sMsg); 4D"IAI } |}^[f] } 6R%c+ok8i EAF<PMb I|RN/RVN /* =}\]i* **TestMethod.java j$T2ff6 */ |(}uagfrd package NetFox; *0{MAm po*s -Hh$3Uv public class TestMethod { UYW%%5p? v!t*Ng 9r+ `j public TestMethod() e~$MIHBY] { ///xx/weblogic60b2_win.exe $^I uE0. try{ Il2DZ5-
) SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); -kES]P?2 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); +6*oO| SiteFileFetch fileFetch = new SiteFileFetch(bean); &_,^OE}K_: fileFetch.start(); rr3NY$W } j_&/^-;e catch(Exception e){e.printStackTrace ();} TcZ
Ci^1F 7$x@;%xd -2v|d]3qG } ^wb -s si=/=h \4K8*`$ public static void main(String[] args) 9XT6Gf56 { `>?\MWyu new TestMethod();
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