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/* Fo=Icvo **SiteFileFetch.java {~_X-g5|] */ 2w>WS# package NetFox; PTWP7A[ import java.io.*; [fiB!G]? import java.net.*; !1$QNxgi /bv1R5 Q0K2md_%x public class SiteFileFetch extends Thread { 7xTgG!>v \
$;E, RZ-=UIf SiteInfoBean siteInfoBean = null; //文件信息Bean w=Ac/12 long[] nStartPos; //开始位置
<u]M):b3 long[] nEndPos; //结束位置 ?`bi8 Ck FileSplitterFetch[] fileSplitterFetch; //子线程对象 N DZ :`D long nFileLength; //文件长度 1@rI4U@D boolean bFirst = true; //是否第一次取文件 v;AsV`g boolean bStop = false; //停止标志 }:<`L\8q\ File tmpFile; //文件下载的临时信息 4$#nciAe DataOutputStream output; //输出到文件的输出流 m-Q!V+XQp i t.Lh'N;T //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) UmUw>+A public SiteFileFetch(SiteInfoBean bean) throws IOException SR)G!9z_/ { Yj3j?.JJk siteInfoBean = bean; /'k4NXnW3 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ebK/cPa8 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); OC34@YUj[ if(tmpFile.exists ()) (KtuikJ32^ { 2fFZ70Yh bFirst = false; n}/?nP\% read_nPos(); Ezsb'cUa( } >-J%=P else }K':tX? { wCw-EGLR nStartPos = new long[bean.getNSplitter()]; %Xc50n2Z nEndPos = new long[bean.getNSplitter()]; w.Cw)#N } qWX%[i% UKX9C"-5v nX~Qt% b* k= } N3dS%F,_ TgMa!Vz hEUS&`K public void run() J<hqF4z { :/UO3 c( //获得文件长度 OH.^m6Z //分割文件 W%&t[_21 //实例FileSplitterFetch WzG]9$v & //启动FileSplitterFetch线程 fy9mS //等待子线程返回 _3@[S
F try{ yvR3| if(bFirst) R9XISsM^ { WK$75G, nFileLength = getFileSize(); riw0w if(nFileLength == -1) 7q\& { ]nPfIBoS System.err.println("File Length is not known!"); dpG l } >=Bl/0YH else if(nFileLength == -2) -KV)1kET { mV!Ia-k System.err.println("File is not access!"); (5CdA1| } 6d~[j<@2 else QA|87alh { TQ`s&8"P for(int i=0;i<nStartPos.length;i++) 1i=lJmr { )(b,v/: nStartPos = (long)(i*(nFileLength/nStartPos.length)); s/Ne,v } QFekj@ for(int i=0;i<nEndPos.length-1;i++) XBx&& { pHKcKqB*13 nEndPos = nStartPos[i+1]; <[.{aj]QV } 3DjlX* nEndPos[nEndPos.length-1] = nFileLength; 0\tV@ 6p2= } %!P^se } rtM29~c>@ m\*;Fx <MK4#I1I //启动子线程 +vf~s^ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ul(pp+%S for(int i=0;i<nStartPos.length;i++) 7`xeuK { )<ig6b% fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), CgT5sk} siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), _*iy *:(o nStartPos,nEndPos,i); <S[]VXy Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); BjX*Gm6l fileSplitterFetch.start(); unX mMSz( } ZG(. Q:1 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), <TN+-)H6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); lZ,w#sqbY // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", X|&v]mJ nEndPos = " + nFileLength); ,c]<Yu // fileSplitterFetch[nPos.length-1].start(); Rtywi}VV2 N>V\ ,zF^^,lO7 //等待子线程结束 ?uAq goCl //int count = 0; #(pY~\ //是否结束while循环 K92nh/}y boolean breakWhile = false; wWYo\WH' itYTV?bd
]v2%h X while(!bStop) *ggai? { . E8Gj'yO write_nPos(); xg(*j[ff3 Utility.sleep(500); op8[8pt% breakWhile = true; Mi^/`1 yC&u^{~BC +HDfEo T for(int i=0;i<nStartPos.length;i++) =Ju%3ptH0 { q%S^3C& if(!fileSplitterFetch.bDownOver) aHR+4m~) { evSr?ys breakWhile = false; 6uS;H]nd< break; ,vDSY N6 } z( !K8
T } ?3#L?Cq if(breakWhile) }1kZF{KD<[ break; } *:H\GL }Y~<|vZ <nvzNXql //count++; \+Nn>wW. //if(count>4) BbIg]E/G // siteStop(); `;
+UWdAR } 99GK6}~TGm #1)#W6 h\ 4`Ib wg6"B System.err.println("文件下载结束!"); V=d~}PJ> } `G'Z,P-a catch(Exception e){e.printStackTrace ();} @@W-]SR } SX)o0v+ b[U;P=;= uqHI/4 //获得文件长度 0<[g7BbR public long getFileSize() d~abWBgC` { )+ (GE int nFileLength = -1; gmUX
2x( try{ W0+m A URL url = new URL(siteInfoBean.getSSiteURL()); Vi=u}(* HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); pgw_F httpConnection.setRequestProperty("User-Agent","NetFox"); L3;cAb/ bHRRgR`, Xmny(j)g int responseCode=httpConnection.getResponseCode(); xLShMv} if(responseCode>=400) dy.U; { .Lm0$o*` processErrorCode(responseCode); o_C]O" return -2; //-2 represent access is error cI\&&<>SlG } wiP )"g.t "'3QKeM1 c#zx" ,K String sHeader; 4+B&/}FDLo _T.T[%-&= ;9;jUQ]MyG for(int i=1;;i++) PfN[)s4F{R { `f<&=_,xfH //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 3f-J%!aH //Utility.log(in.readLine()); U|~IJU3- sHeader=httpConnection.getHeaderFieldKey(i); g1{2E<b5 if(sHeader!=null) rM0Idc.$&& { Pi5($cn if(sHeader.equals("Content-Length")) $DeVXW { X?aj0# Q nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ?_`X8Ok break; G'T:l("l } "Z]z9( } @5j3[e else HSj=g}r break; Gp0yRT. } !j%#7 } W`F?j-4 catch(IOException e){e.printStackTrace ();}
pGcijD catch(Exception e){e.printStackTrace ();} 888"X3.T ms6dl-_t /_mU%fl Utility.log(nFileLength); :Aa5,{v_ =rN_8& 9Pql\]9"o return nFileLength; 6KE?@3;Om } gxc8O).5vY "ph[)/u; Ksf f]##H //保存下载信息(文件指针位置) rqTsKrLe private void write_nPos() F;8Uvj { x31Jl{x8\? try{ o(stXa output = new DataOutputStream(new FileOutputStream(tmpFile)); J+u z{ output.writeInt(nStartPos.length); (R]b'3,E$ for(int i=0;i<nStartPos.length;i++) n{"e8vQx { u>*d^[zS // output.writeLong(nPos); -ZH6*7! output.writeLong(fileSplitterFetch.nStartPos); HX#$ ^@Q( output.writeLong(fileSplitterFetch.nEndPos); ,CIsZ1[VS } a9!.e
rM output.close(); v[]&yD } MDauHtF, catch(IOException e){e.printStackTrace ();} h\/T b8 catch(Exception e){e.printStackTrace ();} AP9>_0= } 1T
8|>2m 3 "?>hQM1R om{aws; //读取保存的下载信息(文件指针位置) o&RNpP* private void read_nPos() 9'0v]ar { cH`ziZ<&m1 try{ UIo jXR< DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); )Ec /5=A int nCount = input.readInt(); a{\<L/\ nStartPos = new long[nCount]; mJ'5!G nEndPos = new long[nCount]; RYV:?=D7s for(int i=0;i<nStartPos.length;i++) ]6].l$%z# { _i2guhRs*Q nStartPos = input.readLong(); .zo>,*:t nEndPos = input.readLong(); W3A9uk6 } %
U|4%P input.close(); C zxF } yDw#V`Y^M catch(IOException e){e.printStackTrace ();} ;:aCZ8e catch(Exception e){e.printStackTrace ();} #@:GLmD% } j4+kL4M@H (%)<jg1 <P_B|Y4N/ private void processErrorCode(int nErrorCode) f,VJfY?# { ?sclOOh System.err.println("Error Code : " + nErrorCode); z4r g.ai } P( 1Z ;v m$F251 F/:Jp3@ //停止文件下载 S8Yti public void siteStop() M,g$ { EttQ<z_T bStop = true; ;mwU>l,4 for(int i=0;i<nStartPos.length;i++) -J^t#R^$` fileSplitterFetch.splitterStop(); s!?T$@a= lr9s`>9 >#|%y>g .o } z K6'wL!!I } }TG=ZVi //负责部分文件的抓取 !h>aP4ofT **FileSplitterFetch.java sEx`9_oZ */ =6xxZy[ package NetFox; wY*tq{7 f5,!,]XO sh;>6xB import java.io.*; dPmNX-'7 import java.net.*; %<h+_(\h wqAj=1M\ 7i88iT public class FileSplitterFetch extends Thread { Q6hWHfS ;`
!j~ ?y2v?h" String sURL; //File URL 1{?5/F \ + long nStartPos; //File Snippet Start Position ^ ^k]2oG long nEndPos; //File Snippet End Position %ql2 XAY int nThreadID; //Thread's ID ,2]a<0m boolean bDownOver = false; //Downing is over Qn`Fq,uvL boolean bStop = false; //Stop identical v|wO qS FileAccessI fileAccessI = null; //File Access interface gJ?Vk<hp M"E7=J F~x>\?iN public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException c3C<P { MXrh[QCU) this.sURL = sURL; W*9*^ this.nStartPos = nStart; >=d%t6%( this.nEndPos = nEnd; *d&+?! nThreadID = id; M{ O8iq[ fileAccessI = new FileAccessI(sName,nStartPos);//定位 m!Fx# } W6jdS;3 ehyCAp0oI ,m1F<Pdts public void run() M6H#Y2!ZbC { ,L$,d while(nStartPos < nEndPos && !bStop) Y(6 p&I { 9K4Jg]? QN^AihsPi x?RYt4 S try{ p>= b|Qy| URL url = new URL(sURL); X*e<g= HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;0-Y), httpConnection.setRequestProperty("User-Agent","NetFox"); 3oMhsQz~z String sProperty = "bytes="+nStartPos+"-"; dr]Pns9 httpConnection.setRequestProperty("RANGE",sProperty); S(Q=2Y Utility.log(sProperty); Qb?eA st wxF?\NS [6f(3|" InputStream input = httpConnection.getInputStream(); {R}Kt;L:Ut //logResponseHead(httpConnection); j S<."a/n WbGN
5?9Q @q+X:K5b byte[] b = new byte[1024]; g @qrVQv int nRead; h4tAaPcS+ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) LuvRxmQ` { @aUQy; nStartPos += fileAccessI.write(b,0,nRead); E{xcu9 //if(nThreadID == 1) /eY}0q% // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); UpS7>c7s } ^(~%'f >WmTM0 8 EUc
6 Utility.log("Thread " + nThreadID + " is over!"); Mh8s @g bDownOver = true; k.!m-5E //nPos = fileAccessI.write (b,0,nRead); `,$PRN"] } o((!3H{D catch(Exception e){e.printStackTrace ();} y-lBaTE9 } dQJ)0!B } ")D5ulb\ 89\DS!\x9 'oS= d //打印回应的头信息 l9#@4Os public void logResponseHead(HttpURLConnection con) 4N8(WI"4S { N'~l,{ for(int i=1;;i++) E@_]L<Z { `]j:''K String header=con.getHeaderFieldKey(i); ~ ^*;#[< if(header!=null) nj6|WJ //responseHeaders.put(header,httpConnection.getHeaderField(header)); .^V9XN{'a Utility.log(header+" : "+con.getHeaderField(header)); l#fwNM/F else tFu"h1 break; nWFU8u% } 6D/K=- } Q|(G - m#`1.5% x@? YS public void splitterStop() v`Yj) { 5DmW5w'p bStop = true; {3eg4j.Z } ph>0?Z =bn !z2 KQ
4C X{ f#kB]w } &9F(C R _m*FHi A8T8+M: /* K(}g!iT)~ **FileAccess.java )6*)u/x: *//文件访问(定位,写) bE6bx6=u package NetFox; 'J_`CS import java.io.*; $d5}OI"g nd,2EX<bE `&URd&ouJD public class FileAccessI implements Serializable{ .>
5[; GBYwS{4 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ):7mK03J RandomAccessFile oSavedFile; 'q\[aKEX= long nPos; \k.W
F|~ KZGy&u
>` r mJ`^6V public FileAccessI() throws IOException NM+(ss' { >>%E?'9A this("",0); 3gs!ojG } `Jn2(+ y&6 pc (D2N_l(`< public FileAccessI(String sName,long nPos) throws IOException .O6(QI*
{ %/w%A:y#& oSavedFile = new RandomAccessFile(sName,"rw"); HpIWH* this.nPos = nPos; =fK6P6'B oSavedFile.seek(nPos); yR1v3D4E } d-`z1'
::sk) <lTLz$QE
public synchronized int write(byte[] b,int nStart,int nLen) #Q@~TW { 7mA:~- .u int n = -1; r<5i try{ Y|cj&<o oSavedFile.write(b,nStart,nLen); gN.n_! n = nLen; 47!k!cHa } uU/'oZ? catch(IOException e) E7 P'} { d~#:t~
$, e.printStackTrace (); ;k
(M4? } A,4Z{f83 -+y3~^EYm, 22@w: return n; n;e.N:p } sFw;P` [oOV@GE a/xnf<(H } }U@(S>,% 9k;%R5( wL[{6wL /* w+gPU1|(r **SiteInfoBean.java KJ
cuZ."wX */ FD/=uIXH2 package NetFox; @ \*Zq I lZ$Jd !md1~g$rN public class SiteInfoBean { 6#kmV "'~&D/7 5DL(#9F8b9 private String sSiteURL; //Site's URL .* &F private String sFilePath; //Saved File's Path &M7AM"9 private String sFileName; //Saved File's Name v9"03=h private int nSplitter; //Count of Splited Downloading File +LF`ZXe8l @T%8EiV soh9Oedml- public SiteInfoBean() ~uu{
v') {//nSplitter的缺省值为5 ^/)%s 3 //default value of nSplitter is 5 <xUX&J=; this("","","",5); NIG*
}[}P } L[tq@[(IJ lX64IvG8+o `#?]g ! public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 'u3,+guz { t**MthnW sSiteURL= sURL; R%6KxN)+@ sFilePath = sPath; GHpP
*x sFileName = sName; 6|QIzs<Z-X this.nSplitter = nSpiltter; Bo0f`EC I Cy6%f? j %7
$X
* } j%i6H1#.Z NUh+ &M ?hKpJA'% public String getSSiteURL() ^*b11/7 { 0~BZh%s< ( return sSiteURL; XA\wZV
|{ } ?u>A2Vc! %*OQH?pyx} 0zE(:K public void setSSiteURL(String value) Iz8gZ:rd0 { 2E0oLl[ sSiteURL = value; a1z*Z/!5 } 3x)jab D!mx &O9 f1q0*)fk public String getSFilePath() \7G.anY { 5%w08 return sFilePath; yC[Q-P *rG } d
9]zB-A 9yp'-RKjw 4P?@NJp public void setSFilePath(String value) Y+Cv9U0 { HqXS-TG sFilePath = value; $V;0z~&!' } D{6<,#P{w M=4`^.Ocm T!-ly7-` public String getSFileName() w[#*f?at~ { >3&9Wbv> return sFileName; f1
`E- } JG@Zb}b xn anca ?N&s. public void setSFileName(String value) [`'K.-?# { w,LB sFileName = value; cG{ } tNljv >vI ])?[9c ZUS06#t} public int getNSplitter() m}'!W`< { ppnl bL^* return nSplitter; P?+
VR=t } ;<#=|eD2 0a:@DOzT Wm/0Pi public void setNSplitter(int nCount) XRi37|p { ) .W0} nSplitter = nCount; sLf~o"yb } o_&Qb^W } |k]fY*z( [<X ~m s?PB ]Tr /* 1V-si bE **Utility.java eE@7AM */ j|LO g package NetFox; 5:%`&B\ 4c<\_\\ck szp.\CMz public class Utility { sU/vXweky" NMESGNa)z @>`qfy? public Utility() fYlqaO4[ { +@~e9ZG%a dw%g9DT l0eh}d } k=9k4l 2yVQqwQm //线程睡眠 (V0KmNCW` public static void sleep(int nSecond) t:n$9WB) { ,fvhP $n try{ s1p<F, Thread.sleep(nSecond); U5[r&Y
D } `t+;[G>ZE catch(Exception e) FBa-gm<9 { L$^)QxH7 e.printStackTrace (); >J{e_C2ZS } zICrp } rVwW%& @/xdWN!, //日志 ,m M7g public static void log(String sMsg) <DhuY/o { 2\CZ"a#[ System.err.println(sMsg); ]PB95% } S$/SFB$)~W 60l!3o"p! MHS|gR.c public static void log(int sMsg) dRUmC H { HahA} Q System.err.println(sMsg); ={50>WXE } P>R u } ;8w
CQ N!<X%Ym 6\? 2=dNX /* lU.aDmy< **TestMethod.java |(uo@-U */ V-18~+F~"a package NetFox; n!U1cB{ 6n
H'NNS:J s\(@f4p public class TestMethod { -c#vWuLl c_Iq!MH ~;uU{TT public TestMethod() B^.:dn
{ ///xx/weblogic60b2_win.exe }S{VR(i`J try{ lYU?j|n SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); df/7u}>9 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); pL: r\Y:R SiteFileFetch fileFetch = new SiteFileFetch(bean);
<3x:nH @ fileFetch.start(); a..LbQQ } 9{%/I
catch(Exception e){e.printStackTrace ();} [-^xw1: =-avzuy# WfQZ7e } oo1h"[ QN#tj$x c/%GfB[w0 public static void main(String[] args) n{=Ot^
"; { /< Dtu UM new TestMethod(); ?y,KN}s_ } k<RaC= } `:d\L
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