-
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
|
/* PLwa!j **SiteFileFetch.java @ -g^R4e< */ *j8w"
4 package NetFox; &:w{[H$- import java.io.*; :'#BU: import java.net.*; hnL(~ n0nkv[ 9NKZE?5P|D public class SiteFileFetch extends Thread { UI |D?z< /TS>I8V! 3)I v8mA SiteInfoBean siteInfoBean = null; //文件信息Bean 2L ~U^ long[] nStartPos; //开始位置 -H{c@hl long[] nEndPos; //结束位置 lAV6z%MmM FileSplitterFetch[] fileSplitterFetch; //子线程对象 dc"Vc 3) long nFileLength; //文件长度 HA"LU;5>2J boolean bFirst = true; //是否第一次取文件 vBq2JJAl boolean bStop = false; //停止标志 L<J%IlcfO File tmpFile; //文件下载的临时信息 .GLotc DataOutputStream output; //输出到文件的输出流 >L)Xyq v||8Q\d //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) @^/JNtbH! public SiteFileFetch(SiteInfoBean bean) throws IOException zI(b#eUF
{ [BmondOx siteInfoBean = bean; `ffWV;P //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <"aPoGda tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); e$ E=n if(tmpFile.exists ()) [G4#DP\t>p { v-4eN1OS bFirst = false; -,3Ka: read_nPos(); liPUK # } ^hTq~ " else \/lH]u\x {
,!PNfJA2 nStartPos = new long[bean.getNSplitter()]; dLG5yx\js nEndPos = new long[bean.getNSplitter()]; 4e1Zyi! } rQ.j$U O" n /.` P#"vlNa Qq^>7OU>Co } m`E8gVC ]@>bz Uo5l
=\ public void run() b'uH4[zX% { kQwBrb4 //获得文件长度 WRL &tz //分割文件 #W'jNX,h //实例FileSplitterFetch W/xb[w9v //启动FileSplitterFetch线程 l\jf]BHX' //等待子线程返回 &nTB^MF try{ *_3+ DF if(bFirst) KGzBK: { y~Sh|2x8v nFileLength = getFileSize(); M%sWtgw( if(nFileLength == -1) = M ? { _K8ob8)m System.err.println("File Length is not known!"); {}{|trr-E } 8iR%?5 >K else if(nFileLength == -2) w~X1Il7A { sf@g $ System.err.println("File is not access!"); -E?h^J&U } !~"q$T>@ else x}].lTjD { }=az6cLE2 for(int i=0;i<nStartPos.length;i++) hyVuZ\9B { f4CwyL6ur nStartPos = (long)(i*(nFileLength/nStartPos.length)); 'C!b($Y } 2Pasmh for(int i=0;i<nEndPos.length-1;i++) mvlK~c8 { n"-cX) nEndPos = nStartPos[i+1]; gfFP-J3cN } x^;nQas; nEndPos[nEndPos.length-1] = nFileLength; qbFzA
i } _h M3p } +mYD
DlvI N@)tU;U3O zf4@:GM` //启动子线程 `4gm'C fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; }`\+_@w for(int i=0;i<nStartPos.length;i++) ;HgV(d#X { owJPEx fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }I9\=jT siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), O5LB&s nStartPos,nEndPos,i); ie=tM'fb Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (KK9/k fileSplitterFetch.start(); 7P.C~,+D%P } YSs9BF:a // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), $:t;WXc.< siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); r,EIOcz: // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", X-e)w nEndPos = " + nFileLength); Z~9\7QJn // fileSplitterFetch[nPos.length-1].start(); |*e
>hk OtrO"K yv[s)c} //等待子线程结束 ^kzw/.I{ //int count = 0; Cn[`] //是否结束while循环 WpWnwQY`# boolean breakWhile = false; w f,7 U;LbP-{B m("!
M~1 while(!bStop) 9=&LMjTQ { ZBB^?FF write_nPos(); ~NMal]Fwx Utility.sleep(500); C3:4V2<_ breakWhile = true; wMT?p/9Blm OGzth$7A A|O7W|"W for(int i=0;i<nStartPos.length;i++) x{6/di { L/_OgL]YdI if(!fileSplitterFetch.bDownOver) Ir_K83VM { (B}+uI{ breakWhile = false; r~si:?6: break; Q+U} } %mAgE\y25 } l+*^P'0u if(breakWhile) u0Fu_Rtr break;
pBG(%3PpW eZ(<hE> 4Sf v //count++; e@Q<hb0<eU //if(count>4) YrS%Yvhj0 // siteStop(); 0-oR
{
{ } >c|u|^3zt %J!+f-:= ,)@Q,EHN; System.err.println("文件下载结束!"); 3tMs613 } hCQzD2 catch(Exception e){e.printStackTrace ();} D ?1$I0 = } xVao3+r #Wey)DI b?hdWQSW7 //获得文件长度 7q<I7Wt public long getFileSize() QU2\gAM {
!NUsfd int nFileLength = -1; Rf+ogLa= try{ %`t;5kmR URL url = new URL(siteInfoBean.getSSiteURL());
}H&NR?Ax HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]!E|5=q httpConnection.setRequestProperty("User-Agent","NetFox"); ^z-e" hw:zak#j, CLg; int responseCode=httpConnection.getResponseCode(); >?ZH[A if(responseCode>=400) }xJ9EE*G/ { bJj<xjBM processErrorCode(responseCode); .3l'&".' return -2; //-2 represent access is error )2C_6eR } O['gp~P" .cdm@_Ls OW<i"?0 String sHeader; k6_RJ8I {w$1_GU 7hqa| for(int i=1;;i++) %3M(!X:[ { #/Y t4n //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); AF g* //Utility.log(in.readLine()); w4H3($
K sHeader=httpConnection.getHeaderFieldKey(i); _Pjo9z
9 if(sHeader!=null) (1T2?mO { , |CT|2D> if(sHeader.equals("Content-Length")) rR@ t5 { ,F`:4=H% nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); D642}VD break; h@7Shp } W'hE, } zM%ILv4 else Wky=]C% break; =W"BfG } v|C)Q %v } m=b~Wf39 catch(IOException e){e.printStackTrace ();} lG;RfDI- catch(Exception e){e.printStackTrace ();} *G7$wW:? D *R F._ V'sp6:3*\ Utility.log(nFileLength); ??5qR8n. g^OU+7o 8aQ\Yx return nFileLength; B<i)je! } F2WUG
)T/"QF}<T {y0#(8-& //保存下载信息(文件指针位置) p:U9#(v) private void write_nPos() !Sx}~XB< { B.vg2N try{ :j)H;@[I output = new DataOutputStream(new FileOutputStream(tmpFile)); S^?
@vj output.writeInt(nStartPos.length); ?}\aG3_4 for(int i=0;i<nStartPos.length;i++) |q"WJQ { c+c3C8s*8 // output.writeLong(nPos); <GC<uB |p output.writeLong(fileSplitterFetch.nStartPos); OiH
tobM output.writeLong(fileSplitterFetch.nEndPos); 1H`T=:P? } 6*u#^">,< output.close(); t33/QW
r } *9M 5' catch(IOException e){e.printStackTrace ();} 'L4@|c~x catch(Exception e){e.printStackTrace ();} 9`yG[OA } i,=greA]" t$^1A1Ef Z[<rz6%cB //读取保存的下载信息(文件指针位置) ,rVm81-2 private void read_nPos() gq~>S1 { r\Nf309~ try{ !7"-9n DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); o_ka'| int nCount = input.readInt(); 0Aw.aQ~E8i nStartPos = new long[nCount]; zc>/1>?M nEndPos = new long[nCount]; VRurn>y0 for(int i=0;i<nStartPos.length;i++) 4vKp341B { 6*9hAnH nStartPos = input.readLong(); Tu2BQ4\[ nEndPos = input.readLong(); 2mN>7Tj: } WW82=2rJ9 input.close(); 7t= e"|^ } m,NUNd#)\ catch(IOException e){e.printStackTrace ();} ~9c?g(0 catch(Exception e){e.printStackTrace ();} *@[DG)N } "W$,dWF fx(^}e L"6qS3 [= private void processErrorCode(int nErrorCode) NPy{ =#k4 { y33+^ System.err.println("Error Code : " + nErrorCode); RO?5WJpPj } ZnSDq_Uk 3qU#Rg
;7 q'~?azg: //停止文件下载 H~UxVQLPp public void siteStop() Njsz= { Tn2nd bStop = true; ?JO x9;` for(int i=0;i<nStartPos.length;i++) :%cL(',Q fileSplitterFetch.splitterStop(); ~`)`Ip ( P|Ph 9,wd,,ta } n*~=O ' } 8wz%e( //负责部分文件的抓取 t:NTk( **FileSplitterFetch.java vn<z\wVbf */ g]?&qF} package NetFox; {E`[`Kf m?bd6'&FR YSERQo import java.io.*; xp-.,^q\w import java.net.*; p.^glz >B mpfc2>6Il. -3`S;Dmn public class FileSplitterFetch extends Thread { Q-o}Xnj*!L _ #]uk&5a ^*(*tS|M String sURL; //File URL V)#se"GV long nStartPos; //File Snippet Start Position lj0"2@z3"E long nEndPos; //File Snippet End Position VL=. JwK int nThreadID; //Thread's ID 2>BWu boolean bDownOver = false; //Downing is over G;:n*_QXE boolean bStop = false; //Stop identical ^]:w5\DG FileAccessI fileAccessI = null; //File Access interface epM;u /.{4
KW5 oe,I vnt public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException N"Y) { =>nrU8x this.sURL = sURL; jf25Ky~ this.nStartPos = nStart; ]G.ttfC this.nEndPos = nEnd; :ad nThreadID = id; 1vKc>+9 fileAccessI = new FileAccessI(sName,nStartPos);//定位 *ub]M3O } 88(h`RGMh h?E[28QB G q%q x4 public void run() 3\_ae2GW { T(t@[U2^ while(nStartPos < nEndPos && !bStop) kSx^Uu* { L1=+x^WQ T\7z87Q w@w(AFV9/ try{ i}teY{pyc URL url = new URL(sURL);
s;V~dxAiv HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `kb]tf httpConnection.setRequestProperty("User-Agent","NetFox"); d,kh6'g2@ String sProperty = "bytes="+nStartPos+"-"; b|mWEB.p httpConnection.setRequestProperty("RANGE",sProperty); A;~lG3j4 Utility.log(sProperty); lnuf_;0 GPBp.$q+B QHOA__? InputStream input = httpConnection.getInputStream(); 9qc<m'MZ //logResponseHead(httpConnection); G"w
?{W@ 0kxo "FA&Qm0 byte[] b = new byte[1024]; R
gY-fc0 int nRead; r}kQ<SRx while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) &)`xlIw} { i#Tm] ++ nStartPos += fileAccessI.write(b,0,nRead); Qvc "?yx8} //if(nThreadID == 1) K;,zE6WD$$ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wh4ik`S 1 } ;UuCSfs{ 7<{g+Q~7* p!qV!: Utility.log("Thread " + nThreadID + " is over!"); Ip#BR!$n bDownOver = true; xs+pCK | //nPos = fileAccessI.write (b,0,nRead); 0/{$5gy& } .B2?%2S catch(Exception e){e.printStackTrace ();} Q72}V9I9 } WJH-~,u } +M4X
r* thG;~W &+V6mH9m@ //打印回应的头信息 Z*&y8;vUQ public void logResponseHead(HttpURLConnection con) n8W+q~sW% { N-XOPwx' for(int i=1;;i++) /5cFa { 6mcxp+lm| String header=con.getHeaderFieldKey(i); _}MO.&Y if(header!=null) =eG?O7z& //responseHeaders.put(header,httpConnection.getHeaderField(header)); DmDsn Utility.log(header+" : "+con.getHeaderField(header)); hM}rf6B else QTZfe<m0 break; pxm{?eBz } %`*`HU#X } 1Rrp#E} P<<?7_ ?? M "QT(u+ public void splitterStop() &!/E&e$_ { "rhU2jT=c bStop = true; OZ{YQ}t{^1 } }dnO7K I+nKaN+8i
G@s]HJ: } j7L uN +; /]' \:>GF-Z( /* `qP <S
**FileAccess.java Bw5zh1ALC; *//文件访问(定位,写) h)S223[ package NetFox; XLwmXi import java.io.*; IE/F =Wr z1wJ-l E?$|`<o{|` public class FileAccessI implements Serializable{ uu08q<B5b) TL^af- //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 nR%ASUx:Y RandomAccessFile oSavedFile; 06hzCWm# long nPos; zj~(CNE CM$q{;y 3&H#LGoV$ public FileAccessI() throws IOException LjZvWts? { D@jG+k-Lm this("",0); 2hZ>bg } KDx~^OO j_=A)B? B 4s^X`?z public FileAccessI(String sName,long nPos) throws IOException #jY\l&E { :exgdm;N oSavedFile = new RandomAccessFile(sName,"rw"); c?@WNv this.nPos = nPos; +rT%C&ze oSavedFile.seek(nPos); &yu3nA:7D } 4k}3^.# )-2sk@y 9\2<#,R1q public synchronized int write(byte[] b,int nStart,int nLen) <5Ft3sd { U[l7n3Y= int n = -1; +y%"[6c| try{ lrn3yDkR? oSavedFile.write(b,nStart,nLen); CcF$?07 i n = nLen; uJBs 3X } !m7`E catch(IOException e) ].E89 _|O { jZRf{ e.printStackTrace (); *t_"]v-w } "EA6RFRD N?Wx-pK X<pg^Y0 return n; >[,ywRJ#_} } h6Femis /(/Z~J[ d!BQ%a } C!]R0L* KyQO>g{R JnC$}amr /* /O,>s **SiteInfoBean.java nC-=CMWWr */ k,)xv? package NetFox; zWN/>~}U\ tyEa5sy4 (s:ihpI public class SiteInfoBean { cr}T ? $\K v|\<N!g (lNV\Za private String sSiteURL; //Site's URL 'VgdQp$L$ private String sFilePath; //Saved File's Path M
@|n"(P private String sFileName; //Saved File's Name IJWUNKqo= private int nSplitter; //Count of Splited Downloading File H2f!c{t$p =[N=mC x,CTB public SiteInfoBean() 79DzrLu {//nSplitter的缺省值为5 S5Hb9m&& //default value of nSplitter is 5 }rWEa^ this("","","",5); =H<I` J' } |E%i
t?3M ~0;l\^ Yf=an`" public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 4trP*u,4 { Ry$zF~[ sSiteURL= sURL; we4k VAn sFilePath = sPath; !ucHLo3: sFileName = sName; `"7}'| this.nSplitter = nSpiltter; 7P+qPcRaP JEw+5MO@ 4tQ~Z6Jn; } -<g&U*/E _T96.~Q 3MmpB9l#H public String getSSiteURL() u-8b,$@Z>' { Su4&qY return sSiteURL; `Z#0kpXk_ } t2L} ?S*Cvr+=4 #[
H4`hZ public void setSSiteURL(String value) &oz^dlw { p)u?x)w= sSiteURL = value; Po)!vL"
} j&(Yk"j+ _/Sqw xj ?#]GR public String getSFilePath() p#\JKx { |)Q#U$ m return sFilePath;
6#J>b[Q } yt5Sy s6DmZ^Y% Rudj"OGO public void setSFilePath(String value) xJ$/#UdP { ; ,vGw<|o sFilePath = value; ;u(#-C2^{l } *]7$/%.D -ho%9LW%| 8[k:FGp> public String getSFileName() OV"uIY[%8V { $fzO:br5WJ return sFileName; rexNsKRK_ } zu,F 0;De <M
y+!3\A 3)6TnY/u6{ public void setSFileName(String value) u~C,x3yr { xg;o<y KF sFileName = value; D2y[?RG } #VvU8"u H@'f=Y*D &Hi;> public int getNSplitter() %W(/W9B$/F { -MK9IO]i return nSplitter; FxFRrRRH@ } up@I,9C/ 8PB 8h L0Ycf|[s, public void setNSplitter(int nCount) +W%3VV$ { %tE#%;Z nSplitter = nCount; >p`ZcFNs" } vG{lxPIj } d:L|BkQ7* 6CV9ewr m]?C @ina /* .eHOG]H **Utility.java V0/PjD,jP */ Q,m&XpZ package NetFox; J#*%r) rRQKW_9mB O
a%ZlEUF public class Utility { 8Y,imj\(v xU!eT'Y 0! W$Cz[ public Utility() /Xm4%~b_gj { MS~+P' JW}O`H9 +V `* } l+UUv]:1 T&q0TBT //线程睡眠 \3WQ<t)W public static void sleep(int nSecond) Wb%t6N? { V{{Xz: try{ Bnfp_SM Thread.sleep(nSecond); g}OZ!mKd } 1!=^mu8 catch(Exception e) 6bwzNY 7 { ZnAXb S e.printStackTrace (); wj{[g^y% }
UOa
n } :pCv!g2 P#l"`C
/ //日志 MJ M< public static void log(String sMsg) *~\R0ddz { [e`e bn[C System.err.println(sMsg); )>]@@Trx } J=t@2 SMn(c eUVhNg public static void log(int sMsg) 63fgl+ { ms{iQ:'9 System.err.println(sMsg); _]t^F9l } wZ%a:Z4TcM } #oD; ?Mi $4:Se#nl He)!Ez\X /* Db K(Rh_
K **TestMethod.java Yv/T6z@ */ ".7\>8A#a package NetFox; EdTR]}8 mlO\wn-F ?`/DFI'_G public class TestMethod { WyU\," %PlA9@:IZ uZml.#@4 public TestMethod() phi9/tO\u { ///xx/weblogic60b2_win.exe z'9U.v'M) try{ +`f3_Xd SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); <lgX=wx L //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5);
vLs*}+f SiteFileFetch fileFetch = new SiteFileFetch(bean); c->.eL% fileFetch.start(); (b8ZADI* } :pdl2#5H^ catch(Exception e){e.printStackTrace ();} 85_Qb2<'r (3? W)i n.7-$1 } &&ZX<wOM dCA!
R"HD )Ah 7 public static void main(String[] args) 5ENEx { ~X<?&;6 new TestMethod(); FWW*f
_L } d]K$0HY } uH |:gF^ 点击下载更多相关资料
|