-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* n#5%{e> **SiteFileFetch.java (ft$ R? */ r`CsR0[ package NetFox; OM7EmMa; import java.io.*; u"1Zv! import java.net.*; )KD*G;<O]L 39,7N2 uY |`6*~ciUV public class SiteFileFetch extends Thread { H(j983 0W>,RR) ?,x3*'-( SiteInfoBean siteInfoBean = null; //文件信息Bean }EWPLJA long[] nStartPos; //开始位置 L(qQ,1VY long[] nEndPos; //结束位置 r5aOQ FileSplitterFetch[] fileSplitterFetch; //子线程对象 {`1gDKH long nFileLength; //文件长度 5"9!kZ(< boolean bFirst = true; //是否第一次取文件 [E|% boolean bStop = false; //停止标志 iwnFCZVS File tmpFile; //文件下载的临时信息 rXu^]CK
*G DataOutputStream output; //输出到文件的输出流 .~dNzonq ;JQ;LbEn //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ]eZrb%B. public SiteFileFetch(SiteInfoBean bean) throws IOException R<x~KJ11c { pbePxOG siteInfoBean = bean; 4XXuj //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); OB5`a,5dI tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >hmBV7nR if(tmpFile.exists ()) \$[S=&E { N1i%b,:3 bFirst = false; etWCMR read_nPos(); iqPMCOPZ } zU,Qph
,< else V0!$k.Wk { $4a;R I nStartPos = new long[bean.getNSplitter()]; Rz9IjL.Z nEndPos = new long[bean.getNSplitter()]; ;/g Bjp]H } e2l!L*[g xRM)f93@ g/6>>p`J =Hwlo! } `z{sDe; '&hk? 3=~0m public void run() 8%D 2G i { {:0TiOP5x //获得文件长度 &`IC3O5 //分割文件 YE5B^sQ1 //实例FileSplitterFetch a8laPN //启动FileSplitterFetch线程 1z$K54Mj //等待子线程返回 P4S]bPIp try{ YZ0Jei8+- if(bFirst) E2~&GkU.UN { (W4H?u@X0 nFileLength = getFileSize(); m]#oZVngy if(nFileLength == -1) Tweku}D7 { w5uOkz # System.err.println("File Length is not known!"); 2Ub!wee } ,4tuWO)" else if(nFileLength == -2) (Ld,<!eN0 { 0<C]9[l System.err.println("File is not access!"); &@h(6 } V*1hoC# else aBonq]W { .>Fy ]Cqoh for(int i=0;i<nStartPos.length;i++) r0fxEYze& { yO`HL'SMo nStartPos = (long)(i*(nFileLength/nStartPos.length)); B
LI
9(@ } C=>IJ'G for(int i=0;i<nEndPos.length-1;i++) [uD G;We= { I@/+= nEndPos = nStartPos[i+1]; Ri mz~}+ } TKBW2 nEndPos[nEndPos.length-1] = nFileLength; Q'qz(G0 } =AIeYUh } M6o"|\ $vK(Qm [DzZ:8 //启动子线程 n3Q Rn^ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; LW '3m5 for(int i=0;i<nStartPos.length;i++) 1ms(03dp { oW
\k%Vj fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $]t3pAI[H0 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), oDBv5 nStartPos,nEndPos,i); +zf[Im%E Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); GLE/ 1 fileSplitterFetch.start(); 7`_`V&3s } :[C"}mR1 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), o!-kwtw`l siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); cA8A^Iv:0 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 6A23H7 nEndPos = " + nFileLength); Cl>{vSN // fileSplitterFetch[nPos.length-1].start(); JULns#tx} {\62c;. ZGZ1Q/WH //等待子线程结束 o/~Rf1 //int count = 0; 3yw`%$d5 //是否结束while循环 t#BQB<GI boolean breakWhile = false; UHT2a9rG o;5 ns #<*=) [ while(!bStop) wFX>y^ 1 { mx3p/p write_nPos(); ZD;1{ Utility.sleep(500); x@*!MC# breakWhile = true; ?)V?6"fFP _ ,~D]JYE O.Xhi+ for(int i=0;i<nStartPos.length;i++) O=;}VZ<9 { _my!YS5n if(!fileSplitterFetch.bDownOver) .Gq]Mrim9G { +Cg[!6[# breakWhile = false; = Y`e?\#` break; Lsb` ,: } FX,kmre3 } KqhE=2, if(breakWhile) i_<GSUTTr/ break; vg;9"A!( '74*-yd *)u%KYGr //count++; H05xt$J //if(count>4) % db // siteStop(); V3v/hV: } J-d>#'Wb| mP[Z lS~" /JbO $A System.err.println("文件下载结束!"); q)rxv7Iu\ } ]7DS>%mY( catch(Exception e){e.printStackTrace ();} jWNF3\ } KzWqHq gO%oA} !i p|9Eue3j2 //获得文件长度 %s*F~E public long getFileSize() .6HHUy { $3)Z>p int nFileLength = -1; e.VR9O]G try{ -ztgirU URL url = new URL(siteInfoBean.getSSiteURL()); _Qd CV` HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); O~DdMW httpConnection.setRequestProperty("User-Agent","NetFox"); 6O\a\z h"ZR`?h L)yc_ d5 int responseCode=httpConnection.getResponseCode(); !}I+)@~\w if(responseCode>=400) ={[9kR i { Ce`#J6lT processErrorCode(responseCode); #Pr
w2u return -2; //-2 represent access is error V<ExR@|}.% } Gk-49|qIV VbfTdRD- 2C[xrZa^ String sHeader; o_R_ ffI
z>Of: ,0\Pr for(int i=1;;i++) d8ck].m= { ni~1)"U. //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *c>B, //Utility.log(in.readLine()); zr@HYl sHeader=httpConnection.getHeaderFieldKey(i); <:ptNGR if(sHeader!=null) < VrHWJo { J>N^ FR9 if(sHeader.equals("Content-Length")) &3CC | { 6BH
P#B2j nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); @5tGI U;1 break; %Fp1c K } p,K!'\ } JDP /vNq else (,^jgv|I break;
`BzjDI:a } G7SmlFn? } lOEB ,/P
catch(IOException e){e.printStackTrace ();} OKV/=]GS catch(Exception e){e.printStackTrace ();} kO/]mNLG u{8:VX Bv{DZ?{s Utility.log(nFileLength); =.(~`ici~ ;Q\MH t* 6Ij'z9nJw return nFileLength; AR3v,eOs } 9^g?/8 I4(z'C EZJ[+ -Q; //保存下载信息(文件指针位置) O)%s_/UX private void write_nPos() =O??W8u { X|4_}b> x try{ ~%?LFR' output = new DataOutputStream(new FileOutputStream(tmpFile)); [ XBVES8 output.writeInt(nStartPos.length); .1YiNmW= for(int i=0;i<nStartPos.length;i++) Jk}Dj0o { D* QZR;D#. // output.writeLong(nPos); p5`={'>- output.writeLong(fileSplitterFetch.nStartPos); AQjf\i output.writeLong(fileSplitterFetch.nEndPos); wu~ ?P ` } LXS)(-& output.close(); ICD;a } -jk-ve catch(IOException e){e.printStackTrace ();} =`E{QCW catch(Exception e){e.printStackTrace ();} Ft<B[bQ } ycj\5+g Rj!9pwvT 75W@B}dZd //读取保存的下载信息(文件指针位置) WwF2Ry^a private void read_nPos() cI (} { Wxa</n8S[n try{ Nq"J[l*+g DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); -)9aY. int nCount = input.readInt(); 0mR^%+~ nStartPos = new long[nCount]; cP^c}e*;NS nEndPos = new long[nCount]; N7UGgn= for(int i=0;i<nStartPos.length;i++) QC<O=<$Q[ { C Xh>'K nStartPos = input.readLong(); w`X0^<Fv nEndPos = input.readLong(); o:PdPuZVR } "5@\"L input.close(); se*!OiOt } 2Dw}o;1' catch(IOException e){e.printStackTrace ();} X}ft7;Jpy catch(Exception e){e.printStackTrace ();} D9%t67s } )QW
p[bV ZmAo9>'Kg @ n^2UJ private void processErrorCode(int nErrorCode) q{uv?{I {
;(
[^+_/ System.err.println("Error Code : " + nErrorCode); a[ yyEgm2 } y`a]##1j$M mGh8/Xt V6kJoSyde //停止文件下载 I78Q8W(5 public void siteStop() 1otE:bi { UId?a}J bStop = true;
?)2; W for(int i=0;i<nStartPos.length;i++) f0 "_ {\ fileSplitterFetch.splitterStop(); K;*B$2Z#k
[7Liken go?}M]c%7 } NeR1}W } N)
'|l0x0 //负责部分文件的抓取 b8&z~'ieR **FileSplitterFetch.java h~5gHx/a */ r1[#_A`Yn package NetFox; !|~yf3 A`nzqe#(1 u?SxaGEa import java.io.*; '}9 %12\^h import java.net.*; Q.g44> *T2kxN,Ik 7Cx-yv public class FileSplitterFetch extends Thread { t/J|<Ooj? O{Y*a )" o#hFK'&~ String sURL; //File URL >0S(se$ long nStartPos; //File Snippet Start Position Le2rc*T long nEndPos; //File Snippet End Position 7`HKa@ int nThreadID; //Thread's ID o?5;l`.L} boolean bDownOver = false; //Downing is over g9AA)Ykp boolean bStop = false; //Stop identical B4{F)Zb FileAccessI fileAccessI = null; //File Access interface &
Tkl-{I u-R;rf5%k 1AQ3< public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 8=-#LVo~c { " nLWvV1 this.sURL = sURL; SI/3Dz[ this.nStartPos = nStart; E=]$nE]b this.nEndPos = nEnd; Dop,_94G nThreadID = id; 5`)[FCQ fileAccessI = new FileAccessI(sName,nStartPos);//定位 <q:2' 4o } 8TCbEPS@Q ZM_-g4[H FDTC?Ii O public void run() $k^&
X
` { =\gK<Xh while(nStartPos < nEndPos && !bStop) ^C~t)U { ;aDYw [ Q|7;Zsd: @=qWwt4~ try{ K~A@>~vFb URL url = new URL(sURL); %<\tN^rP HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Id{Ix(O httpConnection.setRequestProperty("User-Agent","NetFox"); ~;@\9oPpz% String sProperty = "bytes="+nStartPos+"-"; yAQ)/u[| httpConnection.setRequestProperty("RANGE",sProperty); G$t:#2 Utility.log(sProperty); R<Ct{f!
vu3zZMl emG1Wyl InputStream input = httpConnection.getInputStream(); o$Z]qhq //logResponseHead(httpConnection); P.3kcZ P(B&*1X B3Ws)nF" byte[] b = new byte[1024]; 6 -IThC int nRead; H={5>;8G while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 0}-MWbG { RY]jY | E nStartPos += fileAccessI.write(b,0,nRead); qU^`fIa //if(nThreadID == 1) ' pfkbmJ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); },,K6*P } @Uqcym. 7W=s.Gy7G\ ?tkd5kE Utility.log("Thread " + nThreadID + " is over!"); t8uaNvUM}e bDownOver = true; vs{xr*Ft //nPos = fileAccessI.write (b,0,nRead); F@1Eg } p*|Ct catch(Exception e){e.printStackTrace ();} 8r.3t\o)X } Yq%r\[%* } Ur(< ] %8lWJwb7u 95*=&d //打印回应的头信息 7upN:7D- public void logResponseHead(HttpURLConnection con) `FByME { ><{Lh@{ for(int i=1;;i++) Tz{-L%*# { J )UCy;Y String header=con.getHeaderFieldKey(i); Bs\&'=l if(header!=null) e\! ic //responseHeaders.put(header,httpConnection.getHeaderField(header)); vq1u!SY Utility.log(header+" : "+con.getHeaderField(header)); D:XjJMW3r else $|K-wN[ break; j=Z;M1 } J'*`K>wV } v4r%'bA CPJ%<+4%b jR"ACup( public void splitterStop() <1E5[9
q { _@O.EksY3r bStop = true; 90">l^HX= } ' [%?j?2r (
c +M"s F+/#ugI } 4]no#lVRJ *C,1x5 <h*$bx]9 + /* JxQGL{)
> **FileAccess.java gZ6tbp,X *//文件访问(定位,写) p*~b5'+ C+ package NetFox; Z(BZGO< import java.io.*; aA-s{af LuWY}ste vpoJ{TPO
public class FileAccessI implements Serializable{ 14yzGhA {$'oKJy* //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 dyt.(2 RandomAccessFile oSavedFile; )pw53,7>aN long nPos; uwu`ms7z 2 `}#n#C) 2Jqr"|sw public FileAccessI() throws IOException 66HxwY3a { Nh+XlgXG this("",0); ~;I'.TW } %Ktlez:S [ip}f4K TchByN6oN< public FileAccessI(String sName,long nPos) throws IOException |qtZb}"| { J+YoAf`hi oSavedFile = new RandomAccessFile(sName,"rw"); Ns.{$'ll this.nPos = nPos; h`:B8+k oSavedFile.seek(nPos); c4M]q4]F } kjj?X|Un <'vtnz 9KMtPBZ public synchronized int write(byte[] b,int nStart,int nLen) dwVo"_Yr { |?ma? int n = -1; K&;/hdS=F try{ F`57;)F oSavedFile.write(b,nStart,nLen); I GB) n = nLen; k];fQ7}m<0 } (ljoD[kZ catch(IOException e) e4-7&8N+ { @"0n8y e.printStackTrace (); j4E`O%@^ } #XeabcOQ LR
y&/d 0yL%Pjn6 return n; #w;%{C[D } fU'[lZ B)s%B' K<fB]44Y } 'V}4_3#q 9 tIE+RD j_}f6d/h /*
7?2<W-n **SiteInfoBean.java d2*uY., */ >C/O >g package NetFox; K(Ak+&[ W"1=K]B VevDW }4q* public class SiteInfoBean { nh>lDfJV< )0{ZZ-beG y@\J7 h: private String sSiteURL; //Site's URL }Pj;9ivz private String sFilePath; //Saved File's Path &Tk@2<5= private String sFileName; //Saved File's Name @!%HEs!# # private int nSplitter; //Count of Splited Downloading File d?4-"9Y Fy^MI*}BZ YBQ{/"v%| public SiteInfoBean() hvF>Tu]^r {//nSplitter的缺省值为5 dA$qzQ //default value of nSplitter is 5 K"VRHIhfg this("","","",5); |%fM*F^7/ } 6='x}Qb \H !p(N
DQm Ky)*6QOw public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ^zR*s |1Q { {Zf 9}
!qF sSiteURL= sURL; _yc&'Wq sFilePath = sPath; ?9;r|G sFileName = sName; 2E0$R%\ this.nSplitter = nSpiltter; Hs(U|BXU DQ= /Jr~ I5w>*F } 8J8@0 N@\`DO io*iA<@Gx public String getSSiteURL() Dh .<&ri
{ m]'P3^<{P return sSiteURL; n!%'%%o2v } X!f` !tZ:{ 9oxn-)6JC qp2&Z8S\D public void setSSiteURL(String value) pFwhvw { CF/8d6}Vf sSiteURL = value; z460a[Wl } Mtq^6`JJ' 2Z*^)ZQB a
VIh|v public String getSFilePath() 6>F]Z)]} { <CGJ:% AY return sFilePath; N3?hu} } #~6au6LMC 5U<;6s \mDBOC0eK public void setSFilePath(String value) BVv{:m{w { '" J``= sFilePath = value; RV_+-m{] } i"
>kF@]c8 ZGQz@H5 |]j2T8_= public String getSFileName() GaLQ/V2R { e2L4E8ST< return sFileName; qruv^#_l } JG=z~ STz {[[/*1r| :U/x( public void setSFileName(String value) i
E)Fo.H { Q a3+ 9 sFileName = value; D@o8Gerq~ } '*n2<y )jed@? yo_;j@BGR public int getNSplitter() 4,?ZNyl { 3nX={72<b return nSplitter; -)p| i~j^A } ]rc=oP; '+E\-X 4'`y5E public void setNSplitter(int nCount) [K"&1h<> { 8d8GYTl b) nSplitter = nCount; KN"<f:u } ) (l=_[1Z5 } ~?uch8H qt4^e7o 0M|Jvw'n| /* )P
#MUC **Utility.java eWTbHF */ X"O^4MnvI package NetFox; Q7XlFjzcm {V5eHn9/Q' <,I]=+A public class Utility { AMc`qh y~;w`5;| 8&UwnEk< public Utility() %2<u>=6byG { SX@zDuM Y@Ti2bI`v B%/N{i*Z } @&GfCg5Cb 29r (Y //线程睡眠 _X]S`e1F public static void sleep(int nSecond) Vl%jpjqP { (v1~p3H try{ 'uU{.bq Thread.sleep(nSecond); _e94 } 41NVF_R6J catch(Exception e) %mMPALN]{ { w}r~Wk^dLI e.printStackTrace (); K#4Toc#=V } IhPX/P } QT7PCHP B dKD%CJ[ //日志 @"'$e_jj" public static void log(String sMsg) fE,Io3 { 0=V
-{ System.err.println(sMsg); -1c{Jo } <^fvTb &* sH /08Z =w2_1F" public static void log(int sMsg) /'Q2TLy= { xBg.QV System.err.println(sMsg); ":V,&o9n } \2VYDBi?| } y sFp` [WW ~SOJe (I\qTfN4 /* QB L| n+ **TestMethod.java iuS*Vw */ )T!3du:M package NetFox; l&oc/$&|[ POt8G NH0uK public class TestMethod { ~(K{D
D7[N 9jW"83*5 #0'%51Jcl public TestMethod() #7|73&u( { ///xx/weblogic60b2_win.exe raCgctYVq try{ D%!GY1wdn SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); vnD `+y //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); sG8G}f SiteFileFetch fileFetch = new SiteFileFetch(bean); pT'jX^BU fileFetch.start(); )Rr0f 8 } }-H)jN^ catch(Exception e){e.printStackTrace ();} >S'IrnH'! S0mzDLgE T1W H } i16kPU
c[X:vDUX vx}W.6C} public static void main(String[] args) *5d6Q {
dBEm7.nh new TestMethod(); !?5YXI, } M}x]\#MMY } { {@* 点击下载更多相关资料
|