-
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
|
/* cH\.-5NQ **SiteFileFetch.java e?!A]2 */ Y[ toN9, package NetFox; i!EN/Bd import java.io.*; ?e!mv}B_ import java.net.*; \*$''`b)j HrQft1~N 5J8U] :Y) public class SiteFileFetch extends Thread { c4n]#((%a {%3sj"suB 2AI~Jm# SiteInfoBean siteInfoBean = null; //文件信息Bean 6N'v`p8 long[] nStartPos; //开始位置 '\.fG\xD long[] nEndPos; //结束位置 (y!<^Q FileSplitterFetch[] fileSplitterFetch; //子线程对象 1-60gI1) long nFileLength; //文件长度 (Y%pk76d boolean bFirst = true; //是否第一次取文件 MHkTN boolean bStop = false; //停止标志 OfGMeN6 File tmpFile; //文件下载的临时信息 W-+~r DataOutputStream output; //输出到文件的输出流 Qyoly"b@ n$}Cj}eju //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ^X/[x]UOT@ public SiteFileFetch(SiteInfoBean bean) throws IOException ;y"quJ'O { 8n^v,s > siteInfoBean = bean; N
v,Yikf //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); h"{Z%XPX# tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info");
&(Ot(. if(tmpFile.exists ()) {\+!@? { [vs5e3B) bFirst = false; ^ LTKX`p read_nPos();
0]3 #3TH } BHh%3Q else ?tLBEoUmKT { yBwgLn nStartPos = new long[bean.getNSplitter()]; `w
J^ nEndPos = new long[bean.getNSplitter()]; as?~N/} } H#luG_) 3;6Criq} & A%*sD6 9$pQ|e0tJ } A[@xTqs{{ '% $)"g]/# VnB"0"%w public void run() E6
2{sA^ { .6m%/-whS //获得文件长度 I8C(z1(N //分割文件 ;LM,<QJ //实例FileSplitterFetch R7)2@;i //启动FileSplitterFetch线程 h`0'27\C //等待子线程返回 hqA6%Y^k try{ `is."]%f if(bFirst) z+>FKAF { +p:#$R)MW nFileLength = getFileSize(); I'M,p<B if(nFileLength == -1) ppjS|l*` { 7n,*3;I System.err.println("File Length is not known!"); %B&y^mZv*\ } ]D@_cxud3 else if(nFileLength == -2) jW^@lH
EU { $y\\?
System.err.println("File is not access!"); cg-\|H1 } Z9MT,
" else bcp+7b(IB { 2cy: l03 for(int i=0;i<nStartPos.length;i++) .]_
(>^6 { y my/`% nStartPos = (long)(i*(nFileLength/nStartPos.length)); 9%i|_c} } G(2(-x"+ for(int i=0;i<nEndPos.length-1;i++) nwOT%@nw { Z Sj[GI nEndPos = nStartPos[i+1]; |2#)lGA } gZI88Q nEndPos[nEndPos.length-1] = nFileLength; o&
g01t } sOegR5?; } G1t{a: bG`aF*10)! n2NxO0 //启动子线程 &R? \q* fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; %s}c#n)N for(int i=0;i<nStartPos.length;i++) EZ6\pyNB0# { 8<gYB$* S fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0}a="`p#< siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), VM
3~W nStartPos,nEndPos,i);
){u/v[O9" Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); z+RA fileSplitterFetch.start(); `Ap<xT0H } gLyXe,Jp // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >5rb4 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); z}>q/!q // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", '<}N`PS#N nEndPos = " + nFileLength); ws!pp\F // fileSplitterFetch[nPos.length-1].start(); 8F?6Aq1B T$p!IRPt `eD70h`XK //等待子线程结束 T1\LS*~! //int count = 0; h!k[]bt5 //是否结束while循环 rD"$,-h boolean breakWhile = false; k/6Qwb# U3R;'80 f M0+xl+c+ while(!bStop) us/}_r74N* { nY]5pOF: write_nPos(); %25GplMT Utility.sleep(500); xL-]gwq breakWhile = true; ZDQc_{e{ <'{*6f@n F$tshe( for(int i=0;i<nStartPos.length;i++) Owe"x2D\ { ,;&j*qFi if(!fileSplitterFetch.bDownOver) M>eMDCB\ { i?{cB!7 breakWhile = false; XLu Y break; XfYMv38( } 6cO36 } Mj9Mv<io if(breakWhile) ZGa;' break; F
gi&CJ8Q zJ"`40V*; tsYBZaH //count++; <8 $fo //if(count>4) ZOAHM1ci // siteStop(); +D3w2C } ^k*h _Se0,Uns 4qsP/`8 System.err.println("文件下载结束!"); vYPZVqF_$ } -Lo3@:2i catch(Exception e){e.printStackTrace ();} Em<B9S } Whd\Ub8( JZl"k #YiphR& //获得文件长度 X[e:fW[e) public long getFileSize() k1.h |&JJN { (C3:_cM5 int nFileLength = -1; ~W>3EJghR, try{ V*Q!J{lj^# URL url = new URL(siteInfoBean.getSSiteURL()); s"'ns HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !l(O$T9T httpConnection.setRequestProperty("User-Agent","NetFox"); J,W<vrKOcN `K%f"by VUneCt% int responseCode=httpConnection.getResponseCode(); Pg''>6w> if(responseCode>=400) E ',z<S { u3G.xlHH[ processErrorCode(responseCode); p.ks
jD return -2; //-2 represent access is error D;Bij= } =$wQA \cr)O^& Jv8JCu"eky String sHeader; _?I6[Mz 6)h~9iK KHTR oXt for(int i=1;;i++) (g*mC7 HN { v;WfcpWq2 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); r,r"?}Z //Utility.log(in.readLine()); 0^25uAD= sHeader=httpConnection.getHeaderFieldKey(i); 1C5~GI ` if(sHeader!=null) %W8*vSbx { uBUT84i if(sHeader.equals("Content-Length")) g9.y`o}c { A=f)ntH~ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 8+n*S$ break; [W8"Mc|ve }
oB8LJZ; } Q>yO,H| else }v`Z.?|Z break; sLOkLz"x } cl{kCSZo.z } GTocN1,Z~a catch(IOException e){e.printStackTrace ();} XEL~y catch(Exception e){e.printStackTrace ();}
(RBB0CE 9zD,z+ "+Kp8n6 Utility.log(nFileLength); L$3{L"/ nj<nW5[ (o2.*x return nFileLength; iI$;%uY3g } y;VmA#k` n48%Uwa, WxJV
zHtR //保存下载信息(文件指针位置) mum4Uj private void write_nPos() [l*;+N+ {
X?z
CB try{ vVFT0_ output = new DataOutputStream(new FileOutputStream(tmpFile)); ?2<V./2F output.writeInt(nStartPos.length); Ol)M0u for(int i=0;i<nStartPos.length;i++) M6lNdK { G7YBo4v // output.writeLong(nPos); 'p&q}IO output.writeLong(fileSplitterFetch.nStartPos); *EF`s~ output.writeLong(fileSplitterFetch.nEndPos); CPLsSv5 } jJK@i\bU_ output.close(); |o#pd\ } mc|8t0+1` catch(IOException e){e.printStackTrace ();} ]owcx=5q%' catch(Exception e){e.printStackTrace ();} '"9Wt@
. } )P#xny2 uC5W1LyI )E}eK-Yu //读取保存的下载信息(文件指针位置) UJ^-T+fut private void read_nPos() **~1`_7~* { 4Ep6vm X try{ W744hq@P% DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); FJIo]p int nCount = input.readInt(); `e}6/~R` nStartPos = new long[nCount]; DxzNg_E] nEndPos = new long[nCount]; }3S6TJ+ for(int i=0;i<nStartPos.length;i++) iz:O]kI { znNv;-q nStartPos = input.readLong(); hEfFMi=a` nEndPos = input.readLong(); 9@ 8)ZHf } T%@qlEmf input.close(); wQrD(Dv(yA } ~?:Xi_3Lo catch(IOException e){e.printStackTrace ();} DX<xkS[P catch(Exception e){e.printStackTrace ();} 1V;m8)RF } JA
" \)+s)&JLb 86ml.VOR private void processErrorCode(int nErrorCode) 0T<DHPQ1 { `E5vO1Pl System.err.println("Error Code : " + nErrorCode); )B5(V5-!| } c\N-B,m& #W[C;f|, i&zJwUr(< //停止文件下载 xwZ7I public void siteStop() ziG]BZ { G/?j$T bStop = true; LO;Z3Q>#0 for(int i=0;i<nStartPos.length;i++) V1\x.0Fs fileSplitterFetch.splitterStop(); hG>3y\!# %^<A`Q_
]tO9< } U66 zm9
3& } FW!1 0K? //负责部分文件的抓取 =f-.aq(G/ **FileSplitterFetch.java
u9,ZY> */ ] KR\<MJK package NetFox; \&1Di\eL 4P$#m<;t '/K-i.8F import java.io.*; I
DtGtkF import java.net.*; ~riV9_- x#&%lJT CsW*E,|xyP public class FileSplitterFetch extends Thread { o _DZ 1F58 2 l SBqx_4} String sURL; //File URL pxO?:B long nStartPos; //File Snippet Start Position 8A3!XA long nEndPos; //File Snippet End Position |h75S.UY int nThreadID; //Thread's ID WMXk-?v4 boolean bDownOver = false; //Downing is over Ex3V[v+D( boolean bStop = false; //Stop identical >XiTl;UU FileAccessI fileAccessI = null; //File Access interface Y]!{
nW K/+w6d =_Y#uE$ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ILq"/S. { vTF_`X this.sURL = sURL; PgF7ug%,@C this.nStartPos = nStart; ,c\3b)ax this.nEndPos = nEnd; "lJ[H=\ nThreadID = id; .}zpvr8YP fileAccessI = new FileAccessI(sName,nStartPos);//定位 _&
qM^ } .ko}m{ TWFi.w4pY G~;hD-D~. public void run() /\&Wk;u3 { .|g67PH= while(nStartPos < nEndPos && !bStop) X#!oG)or { #aV2+ `d EO[UezuU nQW`X=Ku try{ umD[4aP~; URL url = new URL(sURL); zxt&oT0Q HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :Sj r httpConnection.setRequestProperty("User-Agent","NetFox"); "Lp"o String sProperty = "bytes="+nStartPos+"-"; *l-(tp5 httpConnection.setRequestProperty("RANGE",sProperty); $2j?Z.yEG Utility.log(sProperty); .g6DKjy> e~,/Z\i (YJ]}J^ InputStream input = httpConnection.getInputStream(); 4vk^= //logResponseHead(httpConnection); }m6j6uAR6) CdN,R"V0$@ 9-9:]2~g! byte[] b = new byte[1024]; FGP~^Dr/ int nRead; m%hUvG| i while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) gZs UX^% { H' [#x2 nStartPos += fileAccessI.write(b,0,nRead); A%G
\
AT //if(nThreadID == 1) gTp){ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); -
:0{
} 'e(`2 ?OU+)kgzh G1d!a6> Utility.log("Thread " + nThreadID + " is over!"); : Jh bDownOver = true; Z-!W#
//nPos = fileAccessI.write (b,0,nRead); /Nh:O } +=y ktf catch(Exception e){e.printStackTrace ();} VvO/
} U 6y
;V } I\0mmdi73 @42!\1YT #<7ajmr //打印回应的头信息 psg}sl/ public void logResponseHead(HttpURLConnection con) o'3t(dyyH { xpf\S10e for(int i=1;;i++) jF'azlT { ZcXqH7`r String header=con.getHeaderFieldKey(i); hwmpiyu if(header!=null) ?^F#}>C //responseHeaders.put(header,httpConnection.getHeaderField(header)); 'y#kRC=G: Utility.log(header+" : "+con.getHeaderField(header)); VxOrrs7Z else }31z
35 break; Sdc;jK 9d! } {.We%{4V } h-1eDxK6 VY'#>k}} 2w=0&wG4K public void splitterStop() P]Z}%
8^O { t/,k{5lX bStop = true; T|p$Ddt`+ } |5}{4k~9J .Lrdw3( A$RN7# } ku*|?uF p&F=<<C <3;/,>^ Pm /* BCya5!uy **FileAccess.java snTj!rV/_ *//文件访问(定位,写) bQk5R._got package NetFox; XcA4EBRj
import java.io.*; EIl _QV6 1$fA9u$ m p~\ioI*d public class FileAccessI implements Serializable{ >L anuv)O -aGv#!aIl //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 f #414ja RandomAccessFile oSavedFile; |B4dFI? long nPos; `3r *Ae LX
j Tqp' B$Jn|J"/6 public FileAccessI() throws IOException 7,|-%!p[ { Hux#v>e this("",0); SZc6=^$ } (~{7 e/)r :$[m[y7i <?Fgm1=o public FileAccessI(String sName,long nPos) throws IOException Zx5vIm { 0;e>kz3o oSavedFile = new RandomAccessFile(sName,"rw"); vVKiE 6^ this.nPos = nPos; z]\0]i
oSavedFile.seek(nPos); =Ze~6vS, } Jx_ OT C TA}gCXE
e O" ['.b public synchronized int write(byte[] b,int nStart,int nLen) ,[+gE\z{{u { Qd]-i3^0 int n = -1; RsVba!x@ try{ 2hf]XV\ oSavedFile.write(b,nStart,nLen); 34]f[jJ| n = nLen; p%J,af } /5suyM=U catch(IOException e) Pp3tEZfE { KWy4}7a@,s e.printStackTrace (); ngEjbCV+ } ~|Gtm[9Ru SLz^Wg._ V'^s5 return n; (sO;etW } Z'WoChjM `6lc] r Uh?SDay } $}W=O:L+D O,9KhX+ ] 2FS= /* im%'S6_X4 **SiteInfoBean.java 3boINmX */ Jh M.P9 package NetFox; 0l^-[jK) #=7~.Y "-A@>*g public class SiteInfoBean { cRT@Cu h3>/..l _hA p@?
M private String sSiteURL; //Site's URL Bz9!a k~4 private String sFilePath; //Saved File's Path GvF~h0wMt private String sFileName; //Saved File's Name 8WZM}3x$f{ private int nSplitter; //Count of Splited Downloading File bb+-R_3Kd [=7|LHjU z~L(kf4 public SiteInfoBean() #r#UO {//nSplitter的缺省值为5 4[Hf[. //default value of nSplitter is 5 cZZ-K?_ this("","","",5); b)3dZ*cOJ } ,>`wz^z Kt;h'? DE^{8YX, public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) mcpM<vY/H { B;2os ^* sSiteURL= sURL; ^6Hfq^ejt sFilePath = sPath; ujmO'blO sFileName = sName; +i4S^B/8i this.nSplitter = nSpiltter; a~9U{)@F U<KvKg #
0dN!l; } go@UE2qw ,L6d~>=41 M0S}-eXc5 public String getSSiteURL() ZXFM_>y5 { zVd2kuI&? return sSiteURL; ,<d[5;7x } C~yfuPr\B fOdkzD, (l TM5qC public void setSSiteURL(String value) _b&Mrd { +=)<
Su. sSiteURL = value; o6'I%Gs } mawomna m$NBG w F@& R"- public String getSFilePath() 4h@jJm
{ ~>VEg3#F return sFilePath; SsIy ;l } C5CUMYU \3-XXq C\ZL*,%} public void setSFilePath(String value) j\B]>PP5 { d(3F:dbk sFilePath = value; =;W"Pi;* } j&6,%s-M`a @{iws@. :2pd2 S public String getSFileName() $3[IlQ? { "o2p|2c return sFileName; 5|my}.TR } w},' 1 y>Zvos e lM86 *g 'l public void setSFileName(String value) Nwr.mtvh { 5+vCuVZ sFileName = value; }fpK{db } an_qE}P ^1s!OT Is *;"N kCf public int getNSplitter() 8c(}*,O/ { 7!+kyA\}r^ return nSplitter; (~:k70V5 } +c.A|!- PVP,2Yq! %jdV8D#Q public void setNSplitter(int nCount) 1sl^+)z8 { ?VrZM nSplitter = nCount; 8
!Pk1P } T)&J}^j } $e&( ncM !sQ$a#Ea _IuEa\> /* nF~</> **Utility.java 7Bm 18 */ kq6S`~J^R package NetFox; X|K"p(N 79U
Th@r} [_hHZMTH public class Utility { R$'4 d F]]np&UV. GE]fBg public Utility() ["- pylhK { [SgWUP* `,i'vb`W#b ZZOBMF7 } @P#uH5U oJe9H < //线程睡眠 g
<^Y^~+E public static void sleep(int nSecond) +5H9mk { \?c0XD try{ "'h?O*V]u{ Thread.sleep(nSecond); La48M'u } ztf
VXmi' catch(Exception e) :_JZn`Cab { jLX{$, e.printStackTrace (); j89|hG)2 } s|Ls } x7K a]'sby //日志 O&l(`*P public static void log(String sMsg) bhe~ekb { v39`ct= e System.err.println(sMsg); hDJq:g
wD } TU$PAwn= F,Y,0f@4U9 Nv "R'Pps public static void log(int sMsg) ,Q4U<`ds! { g\)+
LX System.err.println(sMsg); X).UvPZ/ } *F* c } r \H+=2E' 7Ipt~K} R~8gw^w![ /* \kcJF'JFA0 **TestMethod.java v1<gNb)` */ ;Q&38qI package NetFox; E@TX>M-& pw{3I 2Ix @3KVYv,q public class TestMethod { 'EU{%\qM 7IW:,=Zk8+ ,!t1( H
public TestMethod() IK5FSN]s/ { ///xx/weblogic60b2_win.exe W"S,~y try{ DfwxPt# SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); :0IxnK(r& //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 6cz%>@ SiteFileFetch fileFetch = new SiteFileFetch(bean); (q`Jef fileFetch.start(); u\=gps/Z } J XKps#,(# catch(Exception e){e.printStackTrace ();} !Sr^4R +Z Je_Hj9#M\d ,OWdp<z } xb\(>7M6Y yveyAsN`B MV6%~T public static void main(String[] args) ^4(CO[|c~ { GjZ@fnF new TestMethod(); S_LY>k? } q88p~Ccoa } S+>&O3m 点击下载更多相关资料
|