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/* ~Bd=]a$mj **SiteFileFetch.java wT1s;2 % */ 2G8pDvBr package NetFox; e~'`x38 import java.io.*; jN=<dq
~ import java.net.*; P&-o>mM Yo-}uTkw H=t"qEp public class SiteFileFetch extends Thread { XR5KJl Xlo7enzY 5E:$\z; SiteInfoBean siteInfoBean = null; //文件信息Bean 5of3& long[] nStartPos; //开始位置 zM0NRERi long[] nEndPos; //结束位置 =W(*0"RM FileSplitterFetch[] fileSplitterFetch; //子线程对象 B5e9'X^
[ long nFileLength; //文件长度 sE1cvAw9l boolean bFirst = true; //是否第一次取文件 4ls:BO;k] boolean bStop = false; //停止标志 *6uccx7{ File tmpFile; //文件下载的临时信息 Dn- gP DataOutputStream output; //输出到文件的输出流 Fe+
@; xo:kT ) //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) oFY!NMq}: public SiteFileFetch(SiteInfoBean bean) throws IOException CSk]c9= { jYsAL=oh,* siteInfoBean = bean; #;!&8iH //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ,Z.sGv tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); )Q)qz$h@ if(tmpFile.exists ()) L9x-90'q, { `i7r] bFirst = false; Bq0 \T
0, read_nPos(); 0lw>mxN } c:R?da else @@EI=\ { HpwMm^ nStartPos = new long[bean.getNSplitter()]; |WS)KR ! nEndPos = new long[bean.getNSplitter()]; YJi%vQ*] } 'CLZ7pV R>'
%}|v/ Tc2.ciU 1MelHW } _z5/&tm_H H=dIZ u\R?(G& public void run() Fu7:4+ { DM.lQ0xk //获得文件长度 =TB_|`5;j //分割文件 jU,Xlgz(A //实例FileSplitterFetch 8$00\><r //启动FileSplitterFetch线程 e3~MU6 //等待子线程返回 5>532X(0 try{ D0.
)% if(bFirst) Uj@th { TS<d?: nFileLength = getFileSize(); 8tvmqe_G if(nFileLength == -1) gesbt { gLiJ&H System.err.println("File Length is not known!"); tjdPia } Z9{~t else if(nFileLength == -2) 6Z\ aJ { 'o$j~Mr System.err.println("File is not access!"); Z:4/lx7Bq } ,GbmL8P7Y else 56.!L { 0.GFg${v` for(int i=0;i<nStartPos.length;i++) z2=bbm: { V>6klA}o nStartPos = (long)(i*(nFileLength/nStartPos.length)); $ {yct } 4vhf!!1 for(int i=0;i<nEndPos.length-1;i++) MlO OB { -Cf)`/ nEndPos = nStartPos[i+1]; }$6L]
} oOFTQB_6 nEndPos[nEndPos.length-1] = nFileLength; nep#L>LP$x } ttP7-y } gt kV=V ^W |YE72Y kUT2/3Vi //启动子线程 X2w)J?pv fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; X+vKY for(int i=0;i<nStartPos.length;i++) I8H3*DE { ^z,3#gK fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *_V+K siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), rYUIFPN nStartPos,nEndPos,i); $H:!3-/ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Szo'[/
[R fileSplitterFetch.start(); xATx2*@X2 } ">V&{a-C4 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~(kEGEF siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); osV6= // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", GT{4L]C nEndPos = " + nFileLength); 72HA.!ry // fileSplitterFetch[nPos.length-1].start(); D%SOX N XM'tIE+| w[~G^x& //等待子线程结束 m^X51,+< //int count = 0; )g5?5f; //是否结束while循环 ;0DoZ boolean breakWhile = false; 9>RkFV $b8[/], An2>]\L while(!bStop) Kda'N$|` { mc{z write_nPos(); !Ko2yn}6l Utility.sleep(500); 3(YvqPp& breakWhile = true; qs4jUm )f?I{ !gh8 Qs for(int i=0;i<nStartPos.length;i++) r$jWjb { R%r
bysP if(!fileSplitterFetch.bDownOver) Tigw+2 { 6St=r)_ breakWhile = false; |Xt G9A> break; xAmtm" } X [Y0r } |}zWH=6 if(breakWhile) %m&6'Rpfk break; f*k7 @[rSv qxZIH y)kxR //count++; y-<.l=6A //if(count>4) Nd8>p.iqO // siteStop();
CKAd\L } {}$9
70y -CPtYG[s 7x)Pt@c System.err.println("文件下载结束!"); jAJ='|[X\ } 3,PR6a,b' catch(Exception e){e.printStackTrace ();} mK:gj&N7X| } ^PG" O9ex=m `L |q`NJ //获得文件长度 VL%. maj public long getFileSize() WJ{Iv] }9 { 7_~ A*LM int nFileLength = -1; ~yv7[`+Tgg try{ b]u$!W URL url = new URL(siteInfoBean.getSSiteURL()); Xhe& "rM HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Emlj,c<?j httpConnection.setRequestProperty("User-Agent","NetFox"); *)m:u : 5c- P lm% Dka,v int responseCode=httpConnection.getResponseCode();
rPH7
]] if(responseCode>=400) \Vc[/Qp7Bb { rr#nBhh8 processErrorCode(responseCode); 9r%fBiSk return -2; //-2 represent access is error t]K20(FSN } oR#W@OK@is <rC%$tr o.Kn DY String sHeader; ]4aPn s`yzeo %
/:1eE`!S for(int i=1;;i++) -K|1w'E { ly[yn{ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); IQ&PPC //Utility.log(in.readLine()); WNR]GI sHeader=httpConnection.getHeaderFieldKey(i); vF\>;pcT if(sHeader!=null) gP_N|LuF" {
: (UK'i if(sHeader.equals("Content-Length")) uFr12ZFgK { 0/HFLz' nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); M9)4ihK break; /@:X0}L } >n7h%c } 0CzQel)L: else cSL6V2F break; *\ii+f- } I`_2Q:r } (%_X{R' catch(IOException e){e.printStackTrace ();} l";Yw]:^ catch(Exception e){e.printStackTrace ();}
f' A$':Y #j2kT k>&cHCS`* Utility.log(nFileLength); =.`\V] 7@@g|l] RV~t%Sw^ return nFileLength; m6R/, } =3-=p&* 3IYFvq~ kf@JEcKV //保存下载信息(文件指针位置) 1PY]Q{r private void write_nPos() )kep:-wm { ^ZMbJe%L try{ rrL.Y&DTK output = new DataOutputStream(new FileOutputStream(tmpFile)); [,Ehu<mEK output.writeInt(nStartPos.length); L<FXtBJ for(int i=0;i<nStartPos.length;i++) E{
/,
b) { /LFuf`bXV // output.writeLong(nPos); vyZ&%?{*R output.writeLong(fileSplitterFetch.nStartPos); dN5{W0_ output.writeLong(fileSplitterFetch.nEndPos); 8N&'n } oAO{4xP output.close(); n/KO{: } (d4btcg catch(IOException e){e.printStackTrace ();} V]|X
,G catch(Exception e){e.printStackTrace ();} y:)^*2GA-B } *JK0X ]:e_Y,@ izP)t //读取保存的下载信息(文件指针位置) C0N
:z.)4 private void read_nPos() l"ms:v { B[8bkFS>] try{ s{b\\$Rb DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Jc":zR@5 int nCount = input.readInt(); O9daeIF0# nStartPos = new long[nCount]; Pd7\Q]of nEndPos = new long[nCount]; 8"%Es for(int i=0;i<nStartPos.length;i++) Q6m8N { R-%6v2;ry nStartPos = input.readLong(); $0$sM/ % nEndPos = input.readLong(); NP;W=A F } 0AHQ(+Ap input.close(); tV!?Ol } ^PEw#.WG catch(IOException e){e.printStackTrace ();} "Z&.m..gc catch(Exception e){e.printStackTrace ();} v,i|:;G } "t^v;?4 W>#yXg9 gqS9 {K(f private void processErrorCode(int nErrorCode) 0+SDFh { tWn
dAM(U7 System.err.println("Error Code : " + nErrorCode); a&>NuMDI } +q&Hj|;8r SnE^\I^O ?^voA.Bv< //停止文件下载 d,GOP_N8I public void siteStop() |Gic79b { X['9;1Xr bStop = true; 6f +aGz for(int i=0;i<nStartPos.length;i++) f<8Hvumw fileSplitterFetch.splitterStop(); lpG%rN! ^/BGOBK k6C XuU } ;VE y{%nF } m*m),mZ" //负责部分文件的抓取 >Y>R1b% **FileSplitterFetch.java 811>dVq3/ */ #gbB// < package NetFox; 2 .3_FXSt [6a-d>e{ &_L%wV|[ import java.io.*; l~E~! MR import java.net.*; Ef] Hpjvp vH+g*A0S< tA#Pc6zBuC public class FileSplitterFetch extends Thread { :|;@FkQ [v~,|N>w coAXYn String sURL; //File URL 5{'hsC long nStartPos; //File Snippet Start Position lp}S'^ y long nEndPos; //File Snippet End Position #,tT`{u1q int nThreadID; //Thread's ID _v&fIo boolean bDownOver = false; //Downing is over LO=U?`)q boolean bStop = false; //Stop identical ZA="Dac FileAccessI fileAccessI = null; //File Access interface 8e?/LA%MU 'dwW~4|B 6U{A6hH] public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException T#B#q1/ { dJR[9T_OF this.sURL = sURL; sqKx?r72 this.nStartPos = nStart; vIpL8B86a this.nEndPos = nEnd; VKttJok1 nThreadID = id; m?(8T|i fileAccessI = new FileAccessI(sName,nStartPos);//定位 (H_dZL } ;MN$.x+ T >8P1p@A, iTHwH{! public void run() x)C} { j*>J1M3E while(nStartPos < nEndPos && !bStop) D1rVgM { u=0O3-\h {JfQQP&FV |<Ls;:5. try{ \\SQACN URL url = new URL(sURL); p{Q6g>?[ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); yV.p=8: httpConnection.setRequestProperty("User-Agent","NetFox"); ]c>@RXY' String sProperty = "bytes="+nStartPos+"-"; m[}P httpConnection.setRequestProperty("RANGE",sProperty); v_XN).f; Utility.log(sProperty); P}4&J ^ .HZ d.* h,{Q%sqO InputStream input = httpConnection.getInputStream(); V&f*+!!2 //logResponseHead(httpConnection); _*~F1% d # `=Zc7gf `4*I1WZW byte[] b = new byte[1024]; b~zSsws. int nRead; 'OnfU{Ai while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 5Od%Jhtt { PIH\*2\/ nStartPos += fileAccessI.write(b,0,nRead); 7.29' //if(nThreadID == 1) 7wj2-BWa // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 4vg3F( } :$D*ab^^P ehW [LRtq qcs)
p Utility.log("Thread " + nThreadID + " is over!"); 7 z bDownOver = true; 8C{&i5kj\E //nPos = fileAccessI.write (b,0,nRead); 5qrD~D' } b^HDN(v catch(Exception e){e.printStackTrace ();} 2}&ERW } 6La[( ) } QVjHGY*R ^(JrOh' `%Fp'`ZM$8 //打印回应的头信息 OG}890$n public void logResponseHead(HttpURLConnection con) x;[ . ZzQ { n~629 & for(int i=1;;i++) d.+*o { 4.,EKw3 String header=con.getHeaderFieldKey(i); :-{"9cgFR if(header!=null) CmB_g?K //responseHeaders.put(header,httpConnection.getHeaderField(header)); %gmx47 Utility.log(header+" : "+con.getHeaderField(header)); Bj7*2} else XH%pV break; /[TOy2/;%b } UIEvwQ } s*GZOz \kQ)fk]^ ]~;*9`: public void splitterStop() P|Aac,nE+^ { _ &, A bStop = true; |!(8c>]Bo } =G}a%)?As\ [bnu
DS \~#\ [r_ } [R4#bl yepRJ%mp NAo.79 /* *fm?"0M5 **FileAccess.java
Fbo"Csn_ *//文件访问(定位,写) *z[vp2
TN package NetFox; 9i\}^ s2 import java.io.*; Tu(:? z<eu=OD4t +c_AAMe public class FileAccessI implements Serializable{ <~mqb=qA$ @_`r*Tb)dM //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 "[ LUv5 RandomAccessFile oSavedFile; g/C 7wc long nPos; |&@q$d %uo8z~+ j#f/M3 public FileAccessI() throws IOException OmuE l> { :Pq&l. this("",0); "1s ]74 } $2Wk#F2c= =\]gL%N-| w5z]=dN public FileAccessI(String sName,long nPos) throws IOException `)a|Q { 7Q/H+) oSavedFile = new RandomAccessFile(sName,"rw"); lB27Z} this.nPos = nPos; p>)1Z<D"a oSavedFile.seek(nPos); =+X*$'<J } W,~*pyLdO ++~
G\T9H 1tXc7NA< public synchronized int write(byte[] b,int nStart,int nLen) d*+}_EV)Y3 { 8nI~iN?" int n = -1; q5g_5^csM{ try{ VQ!4(
<XD oSavedFile.write(b,nStart,nLen); 9]3l' n = nLen; r5&c!b \ } ScJ:F-@> catch(IOException e) xd3mAf { cPIyD?c e.printStackTrace (); L^e*_q2d:> } 2>"{El|PbN HV!P]82Pa .:H'9QJg return n; %;4#?.W8 } _3
[E$Lg wSjy31 5S? "<+J' } UP-2{zb |? 9>+>s ?IgK nxN("$'cq /* zpT{!V **SiteInfoBean.java |g7)A?2J~ */ NH/jkt&F[ package NetFox; mV]~}7*Y; <;i&-, Z2{$FN public class SiteInfoBean { B#."cg4VR C|}yE;*a ' q9Ejig private String sSiteURL; //Site's URL ]Q^8
9? private String sFilePath; //Saved File's Path ])pX)(a private String sFileName; //Saved File's Name -6 v?iiZr private int nSplitter; //Count of Splited Downloading File lU|ltnU 6Hc25NuQZ 7#
'j>] public SiteInfoBean() Uj 3{c {//nSplitter的缺省值为5 F4(;O7j9 //default value of nSplitter is 5 &[\zs&[@y this("","","",5); &>B|?d } !5+9~/; *RkvM?o@jC ~=wBF public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ,hK
=x { mp3 Dc sSiteURL= sURL; tc;$7F ; sFilePath = sPath; j,,#B4b sFileName = sName; WV}pE~ this.nSplitter = nSpiltter; JF&$' k'$7RjCu lItr*,A] } =uwG.,lC ;F_&h#D]3 ?{Xp'D\z public String getSSiteURL() s5 Fn("h]n { yPbOiA*lHz return sSiteURL; HH!SqkwT } *=z.H
* |q o3
E hQSJt[8My public void setSSiteURL(String value) 5}NO~Xd< { 6O5E4= sSiteURL = value; p*P0<01Z } 7;}TNK\+v ku^2K C~iFFh6: public String getSFilePath() kGq<Zmy| { VAxk?P0j6 return sFilePath; _}Gs9sHr0K } RkdAzv!Y7 # 9f
4{=\ 7Ph+Vs+h public void setSFilePath(String value) `Geq, { d\z':d.Tt sFilePath = value; 43J8PMY } }=3W(1cu- HSl$ U0 ]*S_fme public String getSFileName() ,/L_9wV-\ { 1 _W5@) return sFileName; Qe/=(P< } Hi{!<e2 Q!%CU8!`& ~?A,GalS public void setSFileName(String value) "ZVBn!
{ }\ui}\ sFileName = value; 5Q72.4HH } :kI
x?cc .uagD[${ d>4e9M" public int getNSplitter() B<'V7#L_ { H+2J.&Ch return nSplitter; HNoh B4vt } $j}sxxTT e$(i!G) 7 -V_)FK2c public void setNSplitter(int nCount) f4T-=` SO {
?Ve5}N nSplitter = nCount; S+OI?QS } ")M.p_b[Z= } u=
+ f{z%P I[ {78*SR /* PuABS>.; **Utility.java ~KfjT
p# */ -+I! (? package NetFox; <F.Ol/'h 7#|NQ=yd Xhkw<XbV public class Utility { &akMj@4;R s9:2aLZ{ Y.*lO public Utility() Q}Vho.N@= { |-aj$u%~ 1aMBCh<}JN |QgXSe7 } ;%z0iZmg 0Rk'sEX, //线程睡眠 01q7n`o#zf public static void sleep(int nSecond) @%cJjZ5y { s3kEux^ try{ gZ!(&u Thread.sleep(nSecond); x!.VWG tb } FZ2-e catch(Exception e) hJ4.: { <,hBoHZSL e.printStackTrace (); ze\~-0ks+ } /7"1\s0 U } |95/'a* `oz7Q(` //日志 =L
wX+c public static void log(String sMsg) Oc'z?6axWv { SCH![Amq System.err.println(sMsg); o%9>elOju } -MEz`7c~ Gf]s?J^a Pd;ClMa% public static void log(int sMsg) EIEq[`h { < 5_Ys System.err.println(sMsg); 9FLn7Y } Po4cbFZ } |8`;55G TgB;R5 PrKlwhi# /* QF;<%QF: **TestMethod.java NU(/Yit */ )Z%+~n3o' package NetFox; ,]{NZ9 g^4FzJ =U2Te public class TestMethod { .}<B*e=y 9iy|= @
:4Kk
4g1 public TestMethod() 3ElpS^2W { ///xx/weblogic60b2_win.exe l=]vC +mU try{ XZ&v3ul SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); hw'2q9J| //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5);
E$>e<
T SiteFileFetch fileFetch = new SiteFileFetch(bean); {G0)mp, fileFetch.start(); Xbtv}g<0c } (}}8DB catch(Exception e){e.printStackTrace ();} RZtL<2.@ uY~A0I5Z ck~xj0 } c-=0l)&'D= ^Q,/C8qeb a*[\edcHU public static void main(String[] args) ed*AU,^@v { X[~CLKH( new TestMethod(); g[jZ A[[ } LI<5;oE; } ;MJ1Q 点击下载更多相关资料
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