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/* 0`A~HH} **SiteFileFetch.java S^<g_ q */ |7pR)KH3 package NetFox; \Z/)Y;|mi0 import java.io.*; { e5/+W import java.net.*; tP%{P"g3^ -cm$[,b6 g{9+O7q public class SiteFileFetch extends Thread { -,{-bi ]B]*/ ]$\|ktY! SiteInfoBean siteInfoBean = null; //文件信息Bean j$Je6zq0x long[] nStartPos; //开始位置 ,SiY;(b=\ long[] nEndPos; //结束位置 U*P. :BvG FileSplitterFetch[] fileSplitterFetch; //子线程对象 *(>}Y long nFileLength; //文件长度 dG71*)<)t boolean bFirst = true; //是否第一次取文件 }sFm9j7yR boolean bStop = false; //停止标志 Iu*^xn File tmpFile; //文件下载的临时信息 C2w2252T DataOutputStream output; //输出到文件的输出流 5W@jfh) v[n7" //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) D.6,VY H public SiteFileFetch(SiteInfoBean bean) throws IOException -+em!g' { 'EfR|7m siteInfoBean = bean; 4r0b)Y&I //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Yl$SW;@ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); g@Qgxsyk> if(tmpFile.exists ()) b(I2m { PeE/iZ. bFirst = false; .*JA!B read_nPos(); F5qFYL; } AkT<2H|4 else A
&9(mB { okFvn; nStartPos = new long[bean.getNSplitter()]; T'aec]u nEndPos = new long[bean.getNSplitter()]; @(i!YL } {?}*1,I *8tI*Pus FsGlJ 9A7@
5F } "h7tnMS )
(Tom9^ *cg(
?yg public void run() S"hTE7` { S$^RbI //获得文件长度 GzTq5uU& //分割文件 X*7\lf2 //实例FileSplitterFetch
E|$Oha[ //启动FileSplitterFetch线程 )CS.F= //等待子线程返回 `K
>?ju" try{ oo$MWN8a>r if(bFirst) o(Cey7 { 02k4N% nFileLength = getFileSize(); xlR2|4|8 if(nFileLength == -1) 35x 0T/8 { hwDbs[: System.err.println("File Length is not known!"); X5*C+ I=2 } Y}D onF else if(nFileLength == -2) =0'q!}._! { ]k8/#@19 System.err.println("File is not access!"); irZFV
} Kw`VrcwjT else eb8w~ { s$*'^: for(int i=0;i<nStartPos.length;i++) h`}3h<
8 { m%8qZzqk nStartPos = (long)(i*(nFileLength/nStartPos.length)); ;!T{%-tP } ?n\*,{9 for(int i=0;i<nEndPos.length-1;i++) .~gl19#:T { nB ". '= nEndPos = nStartPos[i+1]; Jj^GWZRu } w_iam qe, nEndPos[nEndPos.length-1] = nFileLength; (:+>#V)pZ } T^} } X+n`qiwq *}):<nB$^ TjBY
4 //启动子线程 N|2y"5 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; l~Lb!; ,dN for(int i=0;i<nStartPos.length;i++) )2E%b+" { 7a$G@ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b( ^^m:(w siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), swc@34ei\ nStartPos,nEndPos,i); oAZh~~tp Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); te4= S
fileSplitterFetch.start(); VRW]a } AP\ofLmq // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), v1.q$ f^( siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Us~ X9n_F // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", !z
zW2> nEndPos = " + nFileLength); BXUF^Hj% // fileSplitterFetch[nPos.length-1].start(); mEuHl> kDz>r#% wn11\j& //等待子线程结束 2PSTGG8JV //int count = 0; 7>
Pgc //是否结束while循环 K$REZe boolean breakWhile = false; )DUL)S y/@iT8$rp !=*.$4 while(!bStop) (a6?s{( { m^{
xd2 write_nPos(); )-/gLZsx Utility.sleep(500); cub<G!K breakWhile = true; ^`qPs/b em]xtya &4$oudn for(int i=0;i<nStartPos.length;i++) WO,xMfK { [ev-^[ if(!fileSplitterFetch.bDownOver) cVq}c? { ZZ)G5ji breakWhile = false; 9|S` ub' break; a1MFjmq } 2#_38=K=@ } 5`E))?*"Pe if(breakWhile) \T-~JQVj break; `HX3|w6W; /CT(k1> *[kx F*^ //count++; [B?z1z8l //if(count>4) ?Cci:Lin // siteStop(); O(OmGu4% } n!N\zx8 LN!W(n( /b.oEGqZX System.err.println("文件下载结束!"); 8t.dPy< } N)43};e catch(Exception e){e.printStackTrace ();} =V^@%YIn } ur2!#bU9 xKJ>gr"w# @5}gsC //获得文件长度 En9R>A;` public long getFileSize() %3a|<6 { (clU$m+oXX int nFileLength = -1; Ls:=A6AGM try{ "'eWn6O( URL url = new URL(siteInfoBean.getSSiteURL()); <4D%v"zRP HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); hr U :Wr httpConnection.setRequestProperty("User-Agent","NetFox"); Vf{2dZZ{1 sS,#0Qt. R.7#zhC`4 int responseCode=httpConnection.getResponseCode(); h}=M^SL if(responseCode>=400) \OHv|8!EI@ { Z|`fHO3j processErrorCode(responseCode); =%h~/, return -2; //-2 represent access is error nN ~GP"} } [a8+( ^&:'NR O2H/rFx4 String sHeader; FWTx&Ip MtG_9- |ft:|/^F& for(int i=1;;i++) 2;N@aZX { /=
^L
iP //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9!t4> //Utility.log(in.readLine()); !O\X+#j sHeader=httpConnection.getHeaderFieldKey(i); t>U!Zal" if(sHeader!=null) gEKO128 { qB JRS'6'9 if(sHeader.equals("Content-Length")) sA_X<>vAKJ {
kQ }s/* nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); +?e}<#vd'? break; &LU'.jY } jpO38H0) } dB`b9)Tk0z else YMAQ+A! break; <-|SIF } SLA#= K } L<@&nx catch(IOException e){e.printStackTrace ();} $'$>UFR catch(Exception e){e.printStackTrace ();} R|t;p!T Bz]J=g7 $GF&x>]] Utility.log(nFileLength); @Qo,p A1<k1[5fJ MYTS3( return nFileLength; #'NY}6cb$ } KF$ %q(( Cj$H[K}> d[U1.SNL //保存下载信息(文件指针位置) 5<r)+?!n private void write_nPos() ]hUKuef { ?-{IsF^ try{ 6{^*JC5nj output = new DataOutputStream(new FileOutputStream(tmpFile)); cMtJy"kK output.writeInt(nStartPos.length); B&nw#saz. for(int i=0;i<nStartPos.length;i++) v@,XinB[ { N<bD // output.writeLong(nPos); 3"B+xbe= output.writeLong(fileSplitterFetch.nStartPos); '
C6:e?R output.writeLong(fileSplitterFetch.nEndPos); U$$3'n } 8DT@h8tA output.close(); U]j&cFbn5_ } u<q)SQ1 catch(IOException e){e.printStackTrace ();} jf7pl8gv catch(Exception e){e.printStackTrace ();} Vw?P.4 } Ty}R^cy{d ]n1D1 7xR|_+%~K //读取保存的下载信息(文件指针位置) x9\J1\ private void read_nPos() J=L`]XE { GG>Y/;^ try{ ./)j5M DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); J/gQQ.s int nCount = input.readInt(); (lb`#TTGx nStartPos = new long[nCount]; &U0WkW nEndPos = new long[nCount]; r1hD
%a for(int i=0;i<nStartPos.length;i++) ZE ^u .>5 { G,/Gq+WX nStartPos = input.readLong(); eu=|t&FKk nEndPos = input.readLong(); 'Ix5,^M}B } g$gVm:= input.close(); V*kznm } j%GbgJ catch(IOException e){e.printStackTrace ();} {"\q(R0 catch(Exception e){e.printStackTrace ();} 2q|_Dma } _"v~"k 90^ 4Qhx[Hv>( aZC*7AK
private void processErrorCode(int nErrorCode) T/5nu?v { *<CxFy;| System.err.println("Error Code : " + nErrorCode); Obg@YIwn } }*ODM6 Z
c<]^QR A<;0L . J //停止文件下载 I &cX8Tw public void siteStop() 9`,,%vdj { C*]AL/ bStop = true; ,FS?"Ni for(int i=0;i<nStartPos.length;i++) T*p|'Q` fileSplitterFetch.splitterStop(); ;_wMWl0F ],$6&Cm &?v#| qIh } {z-NlH
} ]uJM6QuQ //负责部分文件的抓取 mf#fA2[ **FileSplitterFetch.java &8juS,b */ 78^Y;2 P]W package NetFox; 4=UI3 2v3 w8U2y/:> |M]sk?"^ import java.io.*; -D$3!ccX import java.net.*; O<Jwaap i$g|?g~] h
F Dze public class FileSplitterFetch extends Thread { dkf}),Z F @<VG8{ }1@n(#|c String sURL; //File URL [6tR&D#K long nStartPos; //File Snippet Start Position .k
p$oAL long nEndPos; //File Snippet End Position ^]KIgGv\ int nThreadID; //Thread's ID 8R
BDJ boolean bDownOver = false; //Downing is over enWF7` boolean bStop = false; //Stop identical yi&?d&rK FileAccessI fileAccessI = null; //File Access interface _y|[Z; $To4dJb =tLU] public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Ml8E50t>; { y}CkzD this.sURL = sURL; 3s#|Y,{?6R this.nStartPos = nStart; !Q[;5Lqt this.nEndPos = nEnd; W&WB@)ie nThreadID = id; m]E o(P4+ fileAccessI = new FileAccessI(sName,nStartPos);//定位 ,&-S?| } BllDWKb <r@bNx@T R
A*(|n> public void run() ]cS&8{ ^2 { IQo]9Lx while(nStartPos < nEndPos && !bStop) =H
L9Z { iM4mkCdOO @F>[DW]O nm<L&11 try{ qT
5WaO) URL url = new URL(sURL); #}nBS-+ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); J!ln=h httpConnection.setRequestProperty("User-Agent","NetFox"); /IrKpmbq String sProperty = "bytes="+nStartPos+"-"; L;L2j&i%v) httpConnection.setRequestProperty("RANGE",sProperty); U$MWsDn
Utility.log(sProperty); ?<-wHj) Y=PzN3 y-D>xV)n InputStream input = httpConnection.getInputStream(); L;
@aE[#z //logResponseHead(httpConnection); F%w\D9+P E
`?S!*jm e-&L\M byte[] b = new byte[1024]; JkRGt Yq int nRead; <m-Ni while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) hB?U5J { wn&[1gBxM nStartPos += fileAccessI.write(b,0,nRead); kO
/~i //if(nThreadID == 1) H0 {Mlu9 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bWhJ^LD } s{b0#[ >1_Dk7E0D 2l]C55p)s Utility.log("Thread " + nThreadID + " is over!"); :-W$PIBe bDownOver = true; JDIz28 Ww //nPos = fileAccessI.write (b,0,nRead); VGq{y{( } pT|./ Fe catch(Exception e){e.printStackTrace ();} H&"_} } (or =f` } qpH j4 !NlB%cF ]W89.><%14 //打印回应的头信息 n=lggBRx public void logResponseHead(HttpURLConnection con) c80"8r { 11nO<WH for(int i=1;;i++) C@l +\M( { Zw3hp,P] String header=con.getHeaderFieldKey(i); tyBg7dP if(header!=null) {X{01j};8 //responseHeaders.put(header,httpConnection.getHeaderField(header)); %Z-Tb OX Utility.log(header+" : "+con.getHeaderField(header)); Yj|c+&Ng else z:@d@\$? break; +]aD^N9[' } w*]_FqE } bQ${8ZO Udb0&Y1^ 7lnM|nD public void splitterStop() gDUoc*+h { s (l+{b & bStop = true; tSw~_s_V } >2!^ dT^D Dg ?Ho2ih @U7U?.p } +btP]?04 *<#]&2I %'K+$ /* L%=BCmMx **FileAccess.java ?dATMmT- *//文件访问(定位,写) NK*:w *SOI package NetFox; VLl&>Pbe- import java.io.*; 3RY|l?n> J:M<9W x_>"Rnv:K public class FileAccessI implements Serializable{ see'!CjVo2 "N=&4<]I5 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 :6HiP&< RandomAccessFile oSavedFile; z^SN#v$ long nPos; 'Gm!Jblo@ K~9 jin am)J'i, public FileAccessI() throws IOException r(`8A:#d { jHUz`.8B this("",0); :Kt mSY } }J4BxBuV8 1bFEx_ k_.j% public FileAccessI(String sName,long nPos) throws IOException tL|L"t_5x { \f<thd*bC oSavedFile = new RandomAccessFile(sName,"rw"); *1;L,*J"| this.nPos = nPos; d3\l9R{} oSavedFile.seek(nPos);
t}* qs } )Uoe~\ 's%ct}y\J PT=2LZ public synchronized int write(byte[] b,int nStart,int nLen) hyr5D9d { ek_i{'hFd int n = -1; Jg?pW:}R try{ J>&dWKM3 oSavedFile.write(b,nStart,nLen); u]++&~i n = nLen; Vo58Nz:% } K;(|v3g6 catch(IOException e) p%i
.(A { aO;Q%]VL' e.printStackTrace (); lj% ;d' } [s&
y_[S CH|g N'q/7jOy return n; u6CMRZ$ } 22H=!.DJ S7\jR%pb yO69p } Zzzi\5&gU iJ~iJ'vf |cBF-KNZ /* ;/]c^y **SiteInfoBean.java u9[w~U# */ |Z +E(F package NetFox; \H'CFAuF ~wQ WWRk =,1zl}PR public class SiteInfoBean { }j5@\c48 I(r5\A= ~(L<uFU V private String sSiteURL; //Site's URL Fb`7aFIf private String sFilePath; //Saved File's Path aWi]t'_ private String sFileName; //Saved File's Name IBsO private int nSplitter; //Count of Splited Downloading File ob()+p.k K OAQ O J' N"Nd $4 public SiteInfoBean() P^W$qy| {//nSplitter的缺省值为5 we@En
.>f //default value of nSplitter is 5 (Su2\x this("","","",5); x[,wJzp\6 } Y3F.hk}O M}RFFg kv FOk public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 7G #e~,M5 { '}[L sU sSiteURL= sURL; c^/?VmCQ} sFilePath = sPath; nV6g]#~@ sFileName = sName; g960;waz3 this.nSplitter = nSpiltter; ri_6wbPp `oI/;& x'PjP1 } 'jO-e^qT u\\niCNA mJ#B<I' public String getSSiteURL() j~<iTLM { iPi'5g(a return sSiteURL; "r(pK@h } Vste$V D
+%k1 [(ib9_`A'1 public void setSSiteURL(String value) Hw-oh?= { < $/Yw
sSiteURL = value; sA7K ;J}) } tfU3 6PR /3HWP`<x [T&y5"@ public String getSFilePath() UyfIAC$S { ~\(>m=|C:H return sFilePath; ~k_zMU-1 } C4K&flk] 9YsO+7[ |a~&E@0c public void setSFilePath(String value) #1lS\! { ;eSf4_~ sFilePath = value; 761"S@tf$} } )ejqE6'[ #]hkQo :JG}% public String getSFileName() ~8 a>D<b { @G-k]IWi return sFileName; xRZT } tqk6m# @(
"S} hcAL/ +mF 2yh public void setSFileName(String value) aD`e]K ^L { zU=[Kc=$ sFileName = value; m<HjL } L&k$4,Z9 %Q4w9d w%u[~T7OI public int getNSplitter() PqeQe5 { 2PW3S{D t return nSplitter; .aRxqFi_ } xqZ%c/I3q |?b"my$g$ s+t eYL#Zi public void setNSplitter(int nCount) F4l6PGxF&\ { ~a|Q[tiV] nSplitter = nCount; !f2>6}hE } K#yH\fn8 } r_CN/ a v~=ol8J
B 87*[o /* `Wt~6D
e **Utility.java Z
' 96d */ Q%h
o[KU package NetFox; /{}
]Hu I!#^F1p1 [vT,zM
public class Utility { N8Q{4c =!Cvu.~}, ]8z6gDp public Utility() `Hu;Gdj= { M|u5Vs1 ?5M2DLh~ YZJP7nN } \Vq;j 1 `215Llzk; //线程睡眠 he6)
L6T public static void sleep(int nSecond) Ct33S+y { '0?E|B]Cp% try{ bHG>SW\]`? Thread.sleep(nSecond); ?':'zT } t;6/bT- catch(Exception e) >b${rgCvQ { cK/odOi e.printStackTrace (); >QPS0Vx[ } \'b-;exH } D(GHkS*0q >FhBl\oIi //日志 X;g|-< public static void log(String sMsg) v2g+oKO] { Y5pNKL System.err.println(sMsg); {1ceF } (9%%^s]uPT 0:S)2"I58p j+_75t`AZ public static void log(int sMsg) *mtv[ { r4zS, J;, System.err.println(sMsg); GT0'bge } +?'acn } ?Fw/c0 \`x'g)z(i a#$%xw /* 'IszS!kY **TestMethod.java mY9K)]8 */ } 4^UVdz package NetFox; >{8H==P 3 g&mND rKq]zHgpo public class TestMethod { zD|W3hL2& 4'*K\Ul).H [Xg"B|FD0 public TestMethod() ~:Nyv+g,$ { ///xx/weblogic60b2_win.exe 3~'F^=T.Y try{ XCoOs<O:@ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); vZsVxx99 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); <Z[R08 k SiteFileFetch fileFetch = new SiteFileFetch(bean); 4[wP$ fileFetch.start(); :r=_\? } 'Mtu-\ catch(Exception e){e.printStackTrace ();} BO|Jrr> =)LpMTz {5`?0+ } XjNu|H/ $x*GvI1D 3dLz=.=)' public static void main(String[] args) }+1o D{ { x.Y,]wis new TestMethod(); 03T.Owd } $Tza<nA } sjGZ
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