-
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
|
/* <M(Jqb cWa **SiteFileFetch.java Q_ zGs6 */ *h+@a package NetFox; Pm2T!0 import java.io.*; .T*K4m{b0 import java.net.*; :6~DOvY O}4(v # ~hubh!d= public class SiteFileFetch extends Thread { OQ[E-%v1 R fs8nYgv|Q KC+C?]~M SiteInfoBean siteInfoBean = null; //文件信息Bean h5+qP"n!?q long[] nStartPos; //开始位置 K"p$ga{ long[] nEndPos; //结束位置 9}~WwmC|x FileSplitterFetch[] fileSplitterFetch; //子线程对象 @x9DV{j)V long nFileLength; //文件长度 BXNt@% boolean bFirst = true; //是否第一次取文件 >d.o1< boolean bStop = false; //停止标志 / v";u) File tmpFile; //文件下载的临时信息 Kd2?9gaw DataOutputStream output; //输出到文件的输出流 ]_cBd)3P} YeN /J.R //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ttEQgkd` public SiteFileFetch(SiteInfoBean bean) throws IOException Y^zL}@ { G k'j<a
siteInfoBean = bean; <SiD m-=E //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 7@[3]c<= tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); d>ltL`xn if(tmpFile.exists ()) %9|}H [x { p&B
c<+3e bFirst = false; Q
o}&2m read_nPos(); e-$U .cx } aE[>^~Lv} else z93HTy9 { b`x7%?Qn nStartPos = new long[bean.getNSplitter()]; 68m (%%E@ nEndPos = new long[bean.getNSplitter()]; ('!{kVLT- } ' 0iXx nWTo$*>W W$&kOdD!$ Au+SCj } v3b[08
F )Fc`rY ]Lc:M'V# public void run() l2v4SvbX { mL\j^q,Y //获得文件长度 ;>*l?m-S@n //分割文件 OBGA~E;% //实例FileSplitterFetch 3t //启动FileSplitterFetch线程 E,6(/`0H* //等待子线程返回 >Ab>"!/'K try{ Yg 8AMi if(bFirst) 2ckAJcpEb/ { B{fPj9Y0 nFileLength = getFileSize(); J(BtGGU' if(nFileLength == -1) T [mo
PD5 { !PN;XZ~{ System.err.println("File Length is not known!"); nC^|83 } V^O
dTM else if(nFileLength == -2) [emUyF { j, SOL9yg System.err.println("File is not access!"); EJ$- } =bJj;bc'5 else #;Yn8'a~ { u{0'"jVJ for(int i=0;i<nStartPos.length;i++) 4"$K66yk@ { gu+c7qe nStartPos = (long)(i*(nFileLength/nStartPos.length)); =NyN.^bwT } uzf@49m]m for(int i=0;i<nEndPos.length-1;i++) C-@ { -4P2 2 nEndPos = nStartPos[i+1]; Evd>s } L2s)B nEndPos[nEndPos.length-1] = nFileLength; s1,kTde } <8UqV.& } *9"L?S(X# %@IZ41<C
;p~ &G"-C` //启动子线程 nSH
A,c fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; [al, UO for(int i=0;i<nStartPos.length;i++) p fj%AP: { d*%-r2K fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), yZf+*j/a7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), TGnyN'P| nStartPos,nEndPos,i); s>Eu[uA Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Dp:u!tdbeg fileSplitterFetch.start(); [m*=Q } n\v\<mVTb7 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b6Jv|1w' siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); z/bJDSQ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", #(o 'G4T nEndPos = " + nFileLength); jr@u // fileSplitterFetch[nPos.length-1].start(); )|>LSKTEl gi::?ET/. D#>+]}5@x //等待子线程结束 pdnkHR$ //int count = 0; (k?,+jnR //是否结束while循环 4l! ^"=rh boolean breakWhile = false; +MG(YP/l ZyE2=w7n h1 \)_jxA while(!bStop) 3}::"X { zx7*Bnu0 write_nPos(); L@*0wx`fU Utility.sleep(500); =>ooB/ breakWhile = true; F(E3U'G ?#@JH D:Zpls. for(int i=0;i<nStartPos.length;i++) 0mB]*<x8 { *wW/nr=\; if(!fileSplitterFetch.bDownOver) (5@9j { : 0BaEqX breakWhile = false; 1Yt;1k' break; o[AQS` } /p~Wk4' } 8" Z!: =A if(breakWhile) ${n=1-SMU break; xZ2}1D [3`T/Wm XAuB .)| //count++; Ya] qo] //if(count>4) V}732?Jy // siteStop(); G!~[+B } #84pRU~ D$k40Mz ~ei\~;n\@ System.err.println("文件下载结束!"); ^6v ob } O`e0r%SJ catch(Exception e){e.printStackTrace ();} DJ"O`qNV3 } A3%s5`vNvH >'#G$f 3=9yR** //获得文件长度 aK'`yuN public long getFileSize() jyF0asb { (;=:QjaoZ int nFileLength = -1; SJ1
1LF3) try{ )L#C1DP# URL url = new URL(siteInfoBean.getSSiteURL()); >V:g'[b HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7*5$=z4,1 httpConnection.setRequestProperty("User-Agent","NetFox"); gx&BzODPd0 hx$-d}W{ Qg+0(odd int responseCode=httpConnection.getResponseCode(); d)|{iUcW if(responseCode>=400) IC}?oXs5G { }zVPdBRfm processErrorCode(responseCode); ADRjCk}I return -2; //-2 represent access is error M-KjRl } 8;7Y}c $3](6 }fw;{&s{z String sHeader; D%cWw0Oq \RZFq<6> \ief [ for(int i=1;;i++) *&)<'6 { c8mcJAc //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); $NP5Z0v7 //Utility.log(in.readLine()); ~~]/<d sHeader=httpConnection.getHeaderFieldKey(i); GDC`\cy if(sHeader!=null) WAiEINQ^) { 42LlR
0 if(sHeader.equals("Content-Length")) VAf~,T]Ww { '01H8er nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); |i-Q fpn break; xKKL4ws } 2A@9jl s } {O*<1v9< else '2=u<a B break; O4FW/)gq } '>>
IMF } ~*D)L'`2M catch(IOException e){e.printStackTrace ();} e!yUA!x`u catch(Exception e){e.printStackTrace ();} ?}sh@;]*h yG58?5\9 l|-1H76 Utility.log(nFileLength); ?}%Gr,tj2 th8f P%>? O :a return nFileLength; Y4`MgP8t } NLM ]KT ~*-ar 6 _)Uw-vhQiT //保存下载信息(文件指针位置) 'X{cDdS^ private void write_nPos() L'4ob4r{L { N)A?*s'v~ try{ qWe1`.o output = new DataOutputStream(new FileOutputStream(tmpFile)); CtVY;eG output.writeInt(nStartPos.length); o9M[Zr1@k for(int i=0;i<nStartPos.length;i++) ''!pvxA { *!UY;InanX // output.writeLong(nPos); 5=Mm=HyI2 output.writeLong(fileSplitterFetch.nStartPos); WM BntB output.writeLong(fileSplitterFetch.nEndPos); <Fb3\T L } 70&v`" output.close(); ^[XxE Lx } 5gW`;Cdbyc catch(IOException e){e.printStackTrace ();} HTI1eLZ2 catch(Exception e){e.printStackTrace ();} c+AZ(6O?\ } 1&c>v3 $2 zLXmjrC %JDG aG' //读取保存的下载信息(文件指针位置) Rk^Fasg" private void read_nPos() =nOV!!
{ boo,KhW'Y try{ <5/r DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); h{.KPK\ int nCount = input.readInt(); OlhfBu)~ nStartPos = new long[nCount]; PRl\W:_t nEndPos = new long[nCount]; ed*Cx~rT for(int i=0;i<nStartPos.length;i++) joDnjz= { 6cSMKbgZJ nStartPos = input.readLong(); @lAOi1m,, nEndPos = input.readLong(); b].:2 } ]CH@T9d5V input.close(); v vlfL*f } 4NbX!"0 catch(IOException e){e.printStackTrace ();} S5d:?^PGg catch(Exception e){e.printStackTrace ();} RH ow%2D } )H$Ik)/N sj2v*tFb <Hhl=6op private void processErrorCode(int nErrorCode) @``kt*+K+ { +Uq9C-Iu System.err.println("Error Code : " + nErrorCode); g~.,-V} } Y5=~>*e MQE=8\
,T"pUe VJ //停止文件下载 +]
B public void siteStop() *wP8)yv7 { %Rr!I:[ $ bStop = true; ? AP2Opsl for(int i=0;i<nStartPos.length;i++) "e g`3v fileSplitterFetch.splitterStop(); %@ $h?HP `3kE$h# ]R}#3(]1 } Ri4_zb } b>E%&sf //负责部分文件的抓取 VP\HPSp **FileSplitterFetch.java zy4AFW */ shxr^ package NetFox; IGT~@); (}O)pqZ> a*CP1@O import java.io.*; 3/:O8H import java.net.*; 0~A<AF*t Rp A76ug Nv*x^y] public class FileSplitterFetch extends Thread { [{N
i94:d qLKyr@\' 7GfgW02 String sURL; //File URL
wxsJB2 long nStartPos; //File Snippet Start Position COFs?L.` long nEndPos; //File Snippet End Position ]l+Bg;F#V int nThreadID; //Thread's ID EVNTn`J_ boolean bDownOver = false; //Downing is over B+);y boolean bStop = false; //Stop identical )(*A1C[ FileAccessI fileAccessI = null; //File Access interface Di9yd aRq7x~j
)\ 8_>\A=
E
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException dJ?VN!B0 { Y+iC/pd this.sURL = sURL; b@^M|h.Va this.nStartPos = nStart; L;nRI. this.nEndPos = nEnd; 52m^jT Sx nThreadID = id; Q6,rY(b6 fileAccessI = new FileAccessI(sName,nStartPos);//定位 ]?-56c, } )]J I Q"rR 5h1!E Y:^ =jV7 public void run() &[*_ - { X~0l1 @! while(nStartPos < nEndPos && !bStop) |/arxb& { aen(Mcd3bg IG`~^-}7lR N ED`GU try{ Cd'P URL url = new URL(sURL); 9/}i6j8Z HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); s7I*=}{g0. httpConnection.setRequestProperty("User-Agent","NetFox"); :m5&
i& String sProperty = "bytes="+nStartPos+"-"; )oTEB#J httpConnection.setRequestProperty("RANGE",sProperty); 'e3y| Utility.log(sProperty); u>&\@?( H; TmG<S 34YYw@?}Y InputStream input = httpConnection.getInputStream(); V==' 7n //logResponseHead(httpConnection); FtM7+>Do. z"}k\B-5 Sx;zvc byte[] b = new byte[1024]; c/;t.+g int nRead; Lj *FKP\{ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) }K~JM1(26 { <B`}18x nStartPos += fileAccessI.write(b,0,nRead); {tOuKnnS //if(nThreadID == 1) 68FxM#xR // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6xdu}l=% } FPaj
p -J[zJ4z# *^Zt5 zk Utility.log("Thread " + nThreadID + " is over!"); /T#<g: bDownOver = true; k%hD<_:p //nPos = fileAccessI.write (b,0,nRead); {Hp?rY@ } OOl{ catch(Exception e){e.printStackTrace ();} Da-F(^E } IL.Jx:(0 } m6 hA,li >-X&/i ?jqZeO#W7 //打印回应的头信息 7S]
h:q%% public void logResponseHead(HttpURLConnection con) nyQFS { WcH^bAY 6 for(int i=1;;i++) <$?:| { -mY90]g String header=con.getHeaderFieldKey(i); +V2a|uvEc if(header!=null) rA`zuYo //responseHeaders.put(header,httpConnection.getHeaderField(header)); LvWU
%? Utility.log(header+" : "+con.getHeaderField(header)); GZZLX19sq else |]GEJUWtCd break; yqejd_cd } 'Dat.@j } LWVO%@)w wW%I < M `W]a
@\EYA public void splitterStop() T{uktIO/ { @;rVB bStop = true; ykM#EyN } g,,cV+ _'I9rGlx3 '')G6-c/ } 7y[B[$P _Fz)2h,3 Ku&(+e /* ,1~Zqprn **FileAccess.java //J:p,AF *//文件访问(定位,写) ]G1j\ wnF package NetFox; t<`ar@} import java.io.*; HhqqJEp0 DVB:8"Bu xje{kx# public class FileAccessI implements Serializable{ yLDHJ}R ,7j`5iq[m //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 fx;5j; RandomAccessFile oSavedFile; r#Pd@SV long nPos; ..~{cU4Tt z?
{#/ z9D2,N. public FileAccessI() throws IOException ?5(L.XFm { Fn[~5/ this("",0); qb" ! } QlXy9-oJ" Rp@u.C< htF&VeIte public FileAccessI(String sName,long nPos) throws IOException (vI7qD_ { R(zsn; oSavedFile = new RandomAccessFile(sName,"rw"); wz,
\zh this.nPos = nPos; wR;l"*j oSavedFile.seek(nPos); N$y4>g } EXBfzK)a vaQ,l6z
.h wZC'BLD public synchronized int write(byte[] b,int nStart,int nLen) ~f@<] { BMdr.0 int n = -1; #t/Q4X
+ try{ &a|oJ'clz oSavedFile.write(b,nStart,nLen); TM"-X\e~{ n = nLen; <=zGaU, } #zy%B catch(IOException e) 0)P18n"$ { Fx@
{] e.printStackTrace (); :EO}uP2 } `Ch6"=t P\M+ZA ; 8odVdivh return n; HhpP}9P; } $(NfHIX ~Fx[YPO, q6ikJ8E8b } kl={L{r -
a=yid %bimcRX#W /* q@\_q! **SiteInfoBean.java sbs"26IE */ .U1dcL6 package NetFox; Y{O&-5H^| p;5WLAF H 0h public class SiteInfoBean { pP
r<8tm[ >ciq4H43Q| [qXpi'q[ private String sSiteURL; //Site's URL 7d<v\=J} private String sFilePath; //Saved File's Path z=fag'fzM private String sFileName; //Saved File's Name -?]ltn9! private int nSplitter; //Count of Splited Downloading File x)?\g{JH ms{R|vU%b oF>GWstTR public SiteInfoBean() E??%)q {//nSplitter的缺省值为5 c[YjGx //default value of nSplitter is 5 #<~f~{x this("","","",5); F9<OKcXH } Ya_6Zd4O roA1=G\Q OMZT\$9yT public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 4tC_W!?$t { N<{`n; sSiteURL= sURL; esHiWHAC
sFilePath = sPath; x L BG}C sFileName = sName; q)~qd$yMS this.nSplitter = nSpiltter; \1Bgs^ <2Q@^ Y/^<t'o& } K$
&wO. f8 jaMn9o {#%xq]r_ public String getSSiteURL() Cb6MD { S3_4i;K\ return sSiteURL; y(dS1.5F } Z~uKT n br;G5^j3? 42u\Y_^ID public void setSSiteURL(String value) md`ToU { ]/bE${W*] sSiteURL = value; 8F*
WT|] } HZm
i? X2`>@GR/> ]R@G5d public String getSFilePath() 2tv40(M:< { `#f=&S?k return sFilePath; caP } |z'?3?,~ j+9
S m\f_u* public void setSFilePath(String value) (*ng$zZ$ { V\ "5<>+O sFilePath = value; [!le 9aNg } jE#8&P~ CwvNxH#LVu wb[(_@eZ public String getSFileName() k)s 7Ev* { 78)^vvn5~ return sFileName; k~#|8eLv } TJpv"V K5>:WiY @QG1\W' public void setSFileName(String value) Lm|X5RVq { X2[cR;;' sFileName = value; KV_Ga8hs } @"8QG^q8de !cb#fl uE j6A public int getNSplitter() J7GsNFL { fYy.>m+P1 return nSplitter; 6\;1<Sw* } ra>`J_ )0mDN. CiI:
uU public void setNSplitter(int nCount) _w;+Jh { :Y>]6 nSplitter = nCount; L_mqC(vn } G 7]wg>* } kDq%Y[6Z 3(+#^aw r%pFq1/'! /* k_>{"Rc **Utility.java !h!9SE */ ^ kvH/ Y& package NetFox; ef&@aB >e;STU Jt6J'MOq public class Utility { wG5RN;`V k{jw%a<Sc cl{W]4*$ public Utility() k_<{j0z. { X3{1DY3@u i8_x1=A U!:!]DX( } oxQID _M[[vXH //线程睡眠 WgJAr73
l public static void sleep(int nSecond) q_y,j& { ;-pvc<_c< try{ 'S7@+kJ Thread.sleep(nSecond); \Z20fh2 } 5w)^~#' catch(Exception e) 9jGuelwN { n/oipiYx e.printStackTrace (); BddECY,z } NcBe|qxQ } ^FM9} t/U, ]H#Rm#q //日志 A;-z#R#V5 public static void log(String sMsg) q'F_j" { yj'' \ System.err.println(sMsg); 19 wqDIE0 } <ytKf<a%e nX\]i~ ; [%}Xx public static void log(int sMsg) }u_EXP8M { Pgw%SMEp System.err.println(sMsg); RyOT[J } b2X'AHK S } 4Sstg57x~ 8o7]XZE=) -*hb^MvP /* Di<J6xu **TestMethod.java `JWYPsWk */ ]~00=nXFM/ package NetFox; Cxk$"_ _Sgk^i3v cbCE
$ public class TestMethod { NQ!N"C3u E`uaE=Mdq %Mng8r public TestMethod() @y0bU*v7 { ///xx/weblogic60b2_win.exe E[3FdX8 try{ Mj
B<\g> SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Dg>'5`& //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); $wYuH9( SiteFileFetch fileFetch = new SiteFileFetch(bean); X!rQ@F3 fileFetch.start(); 8jjk?PUD8 } '!^E92 catch(Exception e){e.printStackTrace ();} N _~KZQ11^ Uty(sDtu q"+ q } K>R;~
o m-'(27 R8[iXXjku public static void main(String[] args) ra%R:xX { w
<#*O: new TestMethod(); ECS<l*i57& } ,/?%y\:J } "T{~,'T 点击下载更多相关资料
|