-
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
|
/* qM:)daS1w **SiteFileFetch.java j5Wx*~@( */ 'lRHdD}s package NetFox; _TN$c import java.io.*; &|{,4V0%A import java.net.*; c+)|o!d .sR&9FH a=B0ytNm public class SiteFileFetch extends Thread { MW[ 4^ yoY)6cn@ *,[=}v1 SiteInfoBean siteInfoBean = null; //文件信息Bean "!/_h > long[] nStartPos; //开始位置 re7\nZ<\| long[] nEndPos; //结束位置 iM/0Yp-v'> FileSplitterFetch[] fileSplitterFetch; //子线程对象 Nt^&YE7d: long nFileLength; //文件长度 >(6\ C boolean bFirst = true; //是否第一次取文件 rnhf(K.{3 boolean bStop = false; //停止标志 75}u
D File tmpFile; //文件下载的临时信息 ?{z${ bD DataOutputStream output; //输出到文件的输出流 0(g MR u[|S*(P //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) z%dlajYm: public SiteFileFetch(SiteInfoBean bean) throws IOException U?^|>cMr { P_g0G#`4 siteInfoBean = bean; T\s#-f[x //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ;yER
V tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ^-;Z8M if(tmpFile.exists ()) }7z+ { $)7f%II bFirst = false; z+D,:!yF read_nPos(); 5'-9?-S" } bfI -!, else u
R%R]X { }0nB'0|y nStartPos = new long[bean.getNSplitter()]; _r5Ild@n nEndPos = new long[bean.getNSplitter()]; (@o
/>T } }qdJ8K LXF%~^^@d 9la~3L_g yaXa8v'oC } # +]! u%n V1>94/waa *Z2Q]?:{
i public void run() nkj'AH"2 { 842+KLS //获得文件长度 2b,TkG8K //分割文件 :RO:k|g //实例FileSplitterFetch ?E_p ,#9j) //启动FileSplitterFetch线程 RTY4%6]O //等待子线程返回 7%!KAtc try{ hPpXB:(-0 if(bFirst) ;k%sKVP { HPdwx
V nFileLength = getFileSize(); y8S6ZtA}2 if(nFileLength == -1) q<uLBaL_]r { <~X6D? System.err.println("File Length is not known!"); +<WT$ddK=5 } KR(ftG' else if(nFileLength == -2) d>98 E9
{ BF[?* b System.err.println("File is not access!"); S|4/C } ~%K(ou=2 else % P)}(e6y { #=#$b _6* for(int i=0;i<nStartPos.length;i++) gpvj'Ri7V { xa0%;nFKe nStartPos = (long)(i*(nFileLength/nStartPos.length)); I3$vw7}5Y } WA\f`SRF for(int i=0;i<nEndPos.length-1;i++) +i!M[ { B[|/wHMsT} nEndPos = nStartPos[i+1]; $K fk=@ } !jq6cND nEndPos[nEndPos.length-1] = nFileLength; 3i}B\
{ } F_ Cz } _-\{kJ &LQab>{*K TC#B^m`'p //启动子线程 2U+p@}cQUA fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; B"zg85
e for(int i=0;i<nStartPos.length;i++) 3 v$4LY { #}yFHM?i fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7 ~8Fs@ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), %9Fg1LH42r nStartPos,nEndPos,i); =e/4Gs0* Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 0U*"OSpF fileSplitterFetch.start(); PQ1NQy8 }
bK1`a{ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), \bSHBTK siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); kDa#yN\ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", +r P<m nEndPos = " + nFileLength); :8wF0n-' // fileSplitterFetch[nPos.length-1].start(); !`=?<Fl 6e|5qKr $*-L8An? //等待子线程结束 :P"Gym //int count = 0; rO%+)M$A //是否结束while循环 *~^^A9C8 boolean breakWhile = false; tp2 _OQAQ o9\m?~g!E P`"DepeD while(!bStop) <F
& hfy { ;_&L^)~P$ write_nPos(); &L~rq)r/& Utility.sleep(500); 3*JybMo" breakWhile = true; >G~;2K[ MA6%g} o obolDha for(int i=0;i<nStartPos.length;i++) E_rC"_Zte { C8q-gP[ if(!fileSplitterFetch.bDownOver) :+!b8[?Z { 6D(m8 breakWhile = false; ,sl.:C 4 break; 6
74X)hB } Qf]!K6eR } FQ)Ekss~C if(breakWhile) ".<p R}
qp break; e'&{KD,-T rP4@K%F9jB 9ksrr{tW //count++; lM,:c.R //if(count>4) 5xUPqW%3 // siteStop(); y<(.,Nb8 } ;f~'7RKy!G %TgM-F,8 9Bw"VN]W System.err.println("文件下载结束!"); _Z2)e*( } ?3N86Qj catch(Exception e){e.printStackTrace ();} P@?CQvMx } ':$a6f &T fZgU@!z \RO Sd //获得文件长度 >WX'oP(< public long getFileSize() mIodD)?{ { ~vFo 0k( int nFileLength = -1; a$8?0`( try{ b] V=wZ
o URL url = new URL(siteInfoBean.getSSiteURL()); _*I6O$/> HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 'WCTjTob/ httpConnection.setRequestProperty("User-Agent","NetFox"); B=`! Yg.u8{H :tG5~sK int responseCode=httpConnection.getResponseCode(); Q.\ovk~,a if(responseCode>=400) xRN$cZC { I5?LD=tt processErrorCode(responseCode); `,[c??h return -2; //-2 represent access is error 0in6z } JN)t'm[kyE W:J00rsv=` MJ08@xGa String sHeader; xpwzz O*U cTp+M L ]S ,GHPEN for(int i=1;;i++) $*R9LPpk+ {
.Oh$sma1 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); kq-RM#Dj: //Utility.log(in.readLine()); E@KK\m
\e sHeader=httpConnection.getHeaderFieldKey(i); lUd,- if(sHeader!=null) hd-ds~ve { "(qO}&b> if(sHeader.equals("Content-Length")) my6T@0R { ]du~V?N
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); t:7jlD!d break; WgB,,L, } -bF+uCfba } dM$S|,H else dD%m=x break; 6}$cDk`dz } r_m&Jl@4 } d+'+z %s% catch(IOException e){e.printStackTrace ();} *TkABUL catch(Exception e){e.printStackTrace ();} Q23y.^W%c Op{Mc$5a +qec>ALAg Utility.log(nFileLength); NYeg,{q ,<7f5qg"' !k63`(Ti return nFileLength; oL;/Qan } Tw5BvB1 }s[/b"%y 76/%Py| //保存下载信息(文件指针位置) , +^db) private void write_nPos() x!+a,+G { -j,o:ng0 try{ }1wuH output = new DataOutputStream(new FileOutputStream(tmpFile)); I_rVeMw= output.writeInt(nStartPos.length); Fz% n!d for(int i=0;i<nStartPos.length;i++) _?"J.i { yrX]w3kr% // output.writeLong(nPos); Lsdu:+- output.writeLong(fileSplitterFetch.nStartPos); j>iM(8`t1 output.writeLong(fileSplitterFetch.nEndPos); T5h[{J^ } =Sq7U^(> output.close(); y8@!2O4 } sBwgl9 catch(IOException e){e.printStackTrace ();} Ih0GzyU*4 catch(Exception e){e.printStackTrace ();} ^8iy( } ITV}f# hGeRM4zVZZ vY6|V$ //读取保存的下载信息(文件指针位置) xjpW<-)MLf private void read_nPos() By9/tB { :`K;0`C+ try{ DH%X+r DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); J98K:SAR int nCount = input.readInt(); ?0x;L/d]) nStartPos = new long[nCount]; OZ6%AUot nEndPos = new long[nCount]; z$NLFJvy_- for(int i=0;i<nStartPos.length;i++) tj3p71% { wHmEt ORo nStartPos = input.readLong(); R)=<q]Ms nEndPos = input.readLong(); 79v&6Io } K5$ y input.close(); !FO)||'[ } P_gQ-pF. catch(IOException e){e.printStackTrace ();} !ktr|9Bl catch(Exception e){e.printStackTrace ();} ~>n<b1}W } =6$( m}(74 bQ%^l#H_n' `W9_LROD private void processErrorCode(int nErrorCode) `6/7},"9t { fCKcv | System.err.println("Error Code : " + nErrorCode); *uIHa" } rZEu@63 ?S_S.Bd R~i<* //停止文件下载 <+a\'X c public void siteStop() e/6oC~#] { 3-05y!vbcE bStop = true; +vP1DXtj( for(int i=0;i<nStartPos.length;i++) w%ForDB>P fileSplitterFetch.splitterStop(); D+V^nCcx% 8Y9mB#X ]q j%6tz } L2$%h1 } E=y#~W //负责部分文件的抓取 M@8(h= **FileSplitterFetch.java }Y[.h=X */ "elh~K package NetFox; vv u((b {9)f~EbM! =k'dbcfO$9 import java.io.*; D|xSO~M5 import java.net.*; pnD#RvmW2e .f}I$ "2 'BC-'Ot public class FileSplitterFetch extends Thread { Y9WH% Gi-tf< ?}y7S]B FI String sURL; //File URL ()rDM@ long nStartPos; //File Snippet Start Position |
8AH_Fk long nEndPos; //File Snippet End Position AA66^/t int nThreadID; //Thread's ID p7*\]HyE) boolean bDownOver = false; //Downing is over &"BKue~q@p boolean bStop = false; //Stop identical ,FTF@h-Cs FileAccessI fileAccessI = null; //File Access interface */1z=
&~j"3G;e U+K_eEI0_I public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException * .e^s3q$ { dG| iA] this.sURL = sURL; aU3&=aN+ this.nStartPos = nStart; M1^pW63 this.nEndPos = nEnd; qAm%h\ nThreadID = id; 0zd1:*KR, fileAccessI = new FileAccessI(sName,nStartPos);//定位 i@2?5U>h } |y]#-T?)t .Ee8s]h5W %>f:m!. public void run() b;yhgdFx { "0
v]O~s while(nStartPos < nEndPos && !bStop) u@o3p*bQ { ,Zdc s:jwwE2 +h
=lAHn& try{ {DpZg",H- URL url = new URL(sURL); i_MDLS>- HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); p\(%bO httpConnection.setRequestProperty("User-Agent","NetFox"); QKVZ![Y!s String sProperty = "bytes="+nStartPos+"-"; M4QMD;Ez httpConnection.setRequestProperty("RANGE",sProperty); C}Khh`8@5. Utility.log(sProperty); &t4j px mJT7e ua0k)4| InputStream input = httpConnection.getInputStream(); Sh"} c2 //logResponseHead(httpConnection); w,\Ua&>4 "^u|vCqw ZXco5,1 byte[] b = new byte[1024]; k -SUp8}g int nRead; Dr;@) while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) w}'E]y2. { xQN](OKG nStartPos += fileAccessI.write(b,0,nRead); |h.he_B+7 //if(nThreadID == 1) XpM#0hm // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `+<5QtD } pdE=9l' 7_JK2 )q#b^( v Utility.log("Thread " + nThreadID + " is over!"); %1#5
7- bDownOver = true; hX;xbl //nPos = fileAccessI.write (b,0,nRead); KB-7]H } VQX#P< catch(Exception e){e.printStackTrace ();} 6OVAsmE } $
@^n3ZQ4 } %DiZ&}^Ck 7Npz
{C{I 39u!j|VH //打印回应的头信息 u tQ_!3u public void logResponseHead(HttpURLConnection con) s,0,w--= { e'u9 SpJ for(int i=1;;i++) _$1W:!f4 { ><$hFrR! String header=con.getHeaderFieldKey(i); f~E'0f_ if(header!=null) M'*
Y //responseHeaders.put(header,httpConnection.getHeaderField(header)); gllXJM^ - Utility.log(header+" : "+con.getHeaderField(header)); = uOFaZ4 else 0`_Gj{:L break; 75{QBlf<
} W$,c]/u| } B&tl6?7h $ZE OE8.\ ]92@&J0w public void splitterStop() sR #( \ { 1(C%/g#" bStop = true; 8TuOf(qE } Z,ag5 w`]L C,K P!B{ Zr`:A$ } N2C^'dFj XO\P4x:c @v |_APy# /* O"Ar3> **FileAccess.java 0e3aWn *//文件访问(定位,写) C#(4>' package NetFox; ! k&< import java.io.*; xAsbP$J: Ww@Rewo #Jg)HU9
public class FileAccessI implements Serializable{ AWGeK-^ pi+m`O //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 (0^u RandomAccessFile oSavedFile; :)bm+xWFF long nPos; is`le}$^y 5y@JMQSO Uw4KdC public FileAccessI() throws IOException 3<?#*z4]_ { *y7^4I-J this("",0); h@l5MH=|% } ]Y:|%rvVH /)6<`S( 3%'$AM}+s public FileAccessI(String sName,long nPos) throws IOException )j!22tlL { iYBs ) oSavedFile = new RandomAccessFile(sName,"rw"); |odl~juU this.nPos = nPos; O']-<E`1k oSavedFile.seek(nPos); p ^T0(\1 } $--W,ov5j "w=.2A:q {B uh5U, public synchronized int write(byte[] b,int nStart,int nLen) I%;xMtY1o { P)ZGNtO9fG int n = -1; K5'@$Km try{ W~FcU+a oSavedFile.write(b,nStart,nLen); .\qZkk}2l n = nLen; u Q. m[y } 7zT]\AnO catch(IOException e) %6HDLG6@^} { r6QNs1f~. e.printStackTrace (); vY:A7yGW } h9RG?r1 vfm|?\ pzH N:9r return n; U!TFFkX[ } ]xbR:CYJ }5FdX3YR \A
Y7%> } C4]vq+ h)fi9 ^. M*pe /* p'ukV(B **SiteInfoBean.java gVl%:Ra% */ D?;$:D" package NetFox; Jah~h44& *h$Z:p-g aB+Ux<
- public class SiteInfoBean { Mq8jPjL NAlYfbp +t})tDPXw private String sSiteURL; //Site's URL a3sXl+$D@ private String sFilePath; //Saved File's Path a>G|t5w private String sFileName; //Saved File's Name s-~Tf| private int nSplitter; //Count of Splited Downloading File -!k"*P vn9_tL& _T7tq public SiteInfoBean() wZ5+ H%x {//nSplitter的缺省值为5 |#Z:v1]" //default value of nSplitter is 5 '/J}T -,Z this("","","",5); a$l } +K])&}Dw inBBU[Sl D}r,t_]Eb public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) bT2 b)nf { 2r^| sSiteURL= sURL; hqmKUlo sFilePath = sPath; ]2+7?QL, sFileName = sName; |Qo;=~7 this.nSplitter = nSpiltter; mvyqCOp 0 _jQ"_Ff 4jfkCU } 6V
KsX+sd Uo#%f+t
MD%_Z/NL public String getSSiteURL() t-)C0< {
l}A8 return sSiteURL;
.;8T* } ]'3e#Cqeh E9!u|&$S J]^)vxm3 public void setSSiteURL(String value) Ph'*s{ { ~q 0)+' sSiteURL = value; =X'i^Q } y2bL!Y<s9 !ZPaU11 A]id*RtY public String getSFilePath() *tC]Z&5 { &.,ZU\`zT return sFilePath; >jD,%yG } |W];8 n[H3b} hiZE8?0+~N public void setSFilePath(String value) eQbDs_ { q90eB6G0g sFilePath = value; Mhc!v, D$ } ~ pWbD~aeg QqA~y$'ut "T|%F D&[ public String getSFileName() AL74q[> { .H
{ return sFileName; FIG3P)) } s-!Bpr16o0 gJ6C&8tl F:"<4hiA" public void setSFileName(String value) D<B/oSy { NHG+l)y: sFileName = value; vtM!?#
} @-|{qP=Dy +YVnA?r? -'*\KA@u public int getNSplitter() :biM}L { }u8o *P|, return nSplitter; ^tc2?T } 5}@6euT5$ tkx1iBW= ;3wj(o0 public void setNSplitter(int nCount) P#m/b< { # Y/.%ch. nSplitter = nCount; FTZ][ } xs_l+/cZ } zA4m !l*eM BQq,,i8H bU9B2'%E /* ;gfY_MXnF **Utility.java JDrh-6Zgj */ RLBjl%Q> package NetFox; PYX]ld.E WX$mAQDV a"uO0LOb public class Utility { JfS:K' SV*h9LL ~?TGSD@( public Utility() 7714}%Z { Ta^l1]9.* chv0\k"' N%
/if } *vqlY[2Ax F[uy'~;@ //线程睡眠 |y=; #A public static void sleep(int nSecond) U9GmkXRix { eV$pza try{ Ej\EuX Thread.sleep(nSecond); #
~SuL3 } ,b!!h]t catch(Exception e) D.elE: { wmbjL=f
Ia e.printStackTrace (); yDh(4w-~gk } PI@/jh } Bwv@D4bii 7 \)OWp //日志 NfqJ>[}I+ public static void log(String sMsg) GjlA\R^e { P[{qp8(g System.err.println(sMsg); ns`|G;1vv } oo sbf#V _):V7Zv Pl(+&k`} public static void log(int sMsg) n46A { [C 1o9c! System.err.println(sMsg); ^M36=~j } 0ant0< } Fr/3Qp@S ? ->:,I=<~ dm;H0v+Y' /* J!r,ktO^U? **TestMethod.java ivL}\~L */ P{2V@ <} package NetFox; o|#Mq"od PR rf$& u 8`Wj 1 ,q public class TestMethod { V?"X0>]0 v"'Co6fw m>dZ n public TestMethod() :.5l9Ci4 { ///xx/weblogic60b2_win.exe >'IFr9&3 try{ hm#S4/=# SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); #Hm*<s. //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); @pq#? SiteFileFetch fileFetch = new SiteFileFetch(bean); *xm(K+j fileFetch.start(); *=UxX ]0y } Pp-\#WJ catch(Exception e){e.printStackTrace ();} U^jxKBq^ Cw`8[)=}o )X*?M?~\ } p0Cp\. `CCuwe<v aRFLh public static void main(String[] args)
!]]QbB { 4u}"ng
new TestMethod(); |GPR3%9 } 27mGX\T } {z)&=v@ 点击下载更多相关资料
|