-
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
|
/* !$;a[Te **SiteFileFetch.java G!N{NCq */ l_'[27 package NetFox; N==ZtKj F import java.io.*; /cr}N%HZB import java.net.*; Ys+OB*8AE H5CR'Rp Kv'n:z7Md public class SiteFileFetch extends Thread { g>rp@M l%ayI $rF=_D6 SiteInfoBean siteInfoBean = null; //文件信息Bean eN?Y7 long[] nStartPos; //开始位置 TL$EV>Nr long[] nEndPos; //结束位置 D4Al3fe FileSplitterFetch[] fileSplitterFetch; //子线程对象 `;|5 long nFileLength; //文件长度 ^9OUzTF boolean bFirst = true; //是否第一次取文件 >_dx_<75& boolean bStop = false; //停止标志 "xmP6=1 File tmpFile; //文件下载的临时信息 M->*{D@a DataOutputStream output; //输出到文件的输出流 VV4Gjc %3q0(Xl //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /MMd`VrC2 public SiteFileFetch(SiteInfoBean bean) throws IOException aprm0:Q^ { Zn=T#o siteInfoBean = bean; kE8>dmH23 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Wz4&7KYY tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); zya5Jb:Sg if(tmpFile.exists ()) \Ng\B.IQ { \<Sv3xy&O bFirst = false; YJg,B\z} read_nPos(); 0~wF3BgV } n+@F`]Ke else (&|_quP7O { @E( 7V(m/ nStartPos = new long[bean.getNSplitter()]; HoV^Y6 nEndPos = new long[bean.getNSplitter()]; d)cOhZy } EN{]Qb06A !Cgx. " 96yp4v@ %*aJLn+]_R } ^,l_{ 9)xUA;Qw?z )VL96 did public void run() !Fo*e { M.-"U+#aD //获得文件长度 <IW#ME //分割文件 D jk C //实例FileSplitterFetch WW+l' 6. //启动FileSplitterFetch线程 k#8Ti"0 //等待子线程返回 {oc igR0 try{ E$9Ys if(bFirst) t?o,RN: { c_aZ{S nFileLength = getFileSize(); 5D M"0 if(nFileLength == -1) -9RDr\&`( { MMB@.W System.err.println("File Length is not known!"); mk7&<M } O#wpbrJ else if(nFileLength == -2) ,B4VT 96* { 6sIL.S~c) System.err.println("File is not access!"); *k"|i*{ } X[#zCM else M8H5K { +^*iZ6{+7 for(int i=0;i<nStartPos.length;i++) PJxH7|GSi { '(?
uPr nStartPos = (long)(i*(nFileLength/nStartPos.length)); Hf'G8vW } D7Y)?Z5A; for(int i=0;i<nEndPos.length-1;i++) ?USQlnr:R/ { G}
eUL|S nEndPos = nStartPos[i+1]; 8WE{5#oi } 0 a]/%y3V nEndPos[nEndPos.length-1] = nFileLength; ??TMSH } ^c~)/F/cF } LjL[V'JL f.24:Dw, ~GE$myUT\p //启动子线程 E?(xb B fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; o=FE5"t for(int i=0;i<nStartPos.length;i++) eC5 $#,HiC { ^pM+A6
XY fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), + <,gB $j siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), NmMIQ@K nStartPos,nEndPos,i); BCe_@ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *:i1Lv@ fileSplitterFetch.start(); VG/3xR&y } UhIDRR // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), K)TrZ 2 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ~|wbP6</:- // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", #:T-hRu nEndPos = " + nFileLength); pJN$ { // fileSplitterFetch[nPos.length-1].start(); 0$7.g!h? VqL.iZ- +[SgO}sF //等待子线程结束 2pdvWWh3l //int count = 0; pP(XIC //是否结束while循环 cyxuK*x< boolean breakWhile = false; E}%hz*Q)( 5[j`6l T~h5B(J; while(!bStop) JCAq8=zM { <~
J O
s2 write_nPos(); 3\T2?w9u( Utility.sleep(500); (KvROV); breakWhile = true; &uC@|dbC5 [AV4m
Ltjbxw"Qd for(int i=0;i<nStartPos.length;i++) `jS T { ?\8?%Qk if(!fileSplitterFetch.bDownOver) j~j\\Y { hHqh{:q{v breakWhile = false; Kx_h1{ break; ]Qm]I1P } wP,JjPUt } fDx9iHGv if(breakWhile) Mi~(aah break; eT2*W$ t>8XTqqi Scv#zuv_ //count++; iAa;6mH //if(count>4) "`6n6r42 // siteStop(); (H+'X}1
} Zo>]rKeV A.UUW {BHI1Uw System.err.println("文件下载结束!"); pRSOYTebP } Gycm,Cy catch(Exception e){e.printStackTrace ();} dg4vc][ } Vf(6!iRP@ bI|2@HV2 vM_:&j_?`` //获得文件长度 )}9rwZ public long getFileSize() xC
C:BO`pw { t43)F9! int nFileLength = -1; <3,<\ub try{ b,8{ X< URL url = new URL(siteInfoBean.getSSiteURL()); 43V}#DA@ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); VY)s+Bx httpConnection.setRequestProperty("User-Agent","NetFox"); q\\gpCgp vFEQ7qI DNP13wp@ int responseCode=httpConnection.getResponseCode(); .jMq if(responseCode>=400) A<;SnXm { gk`zA processErrorCode(responseCode); +**!@uY return -2; //-2 represent access is error '=P7""mN5 } %,ngRYxT# JmEj{K<3I G9JAcO1 String sHeader; 7t.!lh5G% KD^N)&k^Kp h;3cd0 for(int i=1;;i++) 3j3N!T9 { Fv<`AU //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); vzmc}y G //Utility.log(in.readLine()); x`6<m!d` sHeader=httpConnection.getHeaderFieldKey(i); ]vuwkn+) if(sHeader!=null) _ 84ut { /rSH"$ if(sHeader.equals("Content-Length")) Ks}Xgc\ { TwgrRtj' nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); : _QCfH break; }%D^8>S } LY+|[qka } `Qeg else )Pv9_XKJ break; 2h%z ("3/ } @O[5M2|r }
YtO|D catch(IOException e){e.printStackTrace ();} H*9~yT'Q catch(Exception e){e.printStackTrace ();} r [K5w bu51$s?B V\6]n2 Utility.log(nFileLength); } CfqG?) IIyI=WlpG &?h,7
D;A return nFileLength; a@R]X5[O } xZV1k~C VU@9@%TN
P\_` //保存下载信息(文件指针位置) t:fFU1x private void write_nPos() Q?X>E3=U { @$T 9Ll try{ uw2hMt (N output = new DataOutputStream(new FileOutputStream(tmpFile)); D.mHIsX6\ output.writeInt(nStartPos.length); }K3x for(int i=0;i<nStartPos.length;i++) >a}f{\Q { <vwkjCA` // output.writeLong(nPos); Onwp-!!.
output.writeLong(fileSplitterFetch.nStartPos); @Pt="*g output.writeLong(fileSplitterFetch.nEndPos); @'GGm#< } ]7e =fM9V; output.close(); \m1~jMz*>k } 2+X\}s1vN catch(IOException e){e.printStackTrace ();} *E{2J:` catch(Exception e){e.printStackTrace ();} GQ
|Mr{.; } t#2(j1 XU"~h64] {GJ@psG* //读取保存的下载信息(文件指针位置) J(6oL private void read_nPos() L5,NP5RC { P@FHnh3}Z$ try{ -{ZWo:,r~q DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 0tU.( int nCount = input.readInt(); 4^URX>nx8 nStartPos = new long[nCount]; QVtQx>K` nEndPos = new long[nCount]; 9V5-%Iv for(int i=0;i<nStartPos.length;i++) ooQQ-?"m { ttu&@
= nStartPos = input.readLong(); 0'IBN} nEndPos = input.readLong(); Q1+dCCY#F } v;)..X30 input.close(); l]5w$dded~ } ,N0#!<}4 catch(IOException e){e.printStackTrace ();} /i77 catch(Exception e){e.printStackTrace ();} tPF.r } g1(IR)U!z /E\%>wv o]opdw private void processErrorCode(int nErrorCode) rEF0oJ. { #_u~/jhX System.err.println("Error Code : " + nErrorCode); V5rST + } KY~-;0x o>VVsH G["c\Xux //停止文件下载 ZMq6/G*fD public void siteStop() s)pbS}L { ukUGvK bStop = true; v\{!THCSh for(int i=0;i<nStartPos.length;i++) Q 7?#=N? fileSplitterFetch.splitterStop(); Bs?^2T~%{ JeE;V![ d N$Tf } E@b(1@ }
)KAEt.
//负责部分文件的抓取 rh^mJUh **FileSplitterFetch.java r3PT1'P?L */ cMOyo<F#^= package NetFox; VzVc37Z>6 b1($R[ q7E~+p(>( import java.io.*; =y!$/(H import java.net.*; R~6$oeWAw c??mL4$'N {lc\,F* $ public class FileSplitterFetch extends Thread { hzvd t `V04\05 RVQh2'w String sURL; //File URL &e!7Z40w@& long nStartPos; //File Snippet Start Position FIsyiSY<j long nEndPos; //File Snippet End Position kbe-1 <72 int nThreadID; //Thread's ID {Ja!~N;3 boolean bDownOver = false; //Downing is over 1 |jt"Hz boolean bStop = false; //Stop identical Dbz3;t FileAccessI fileAccessI = null; //File Access interface ^t#&@-'(d aSnFKB eYvWZJa4 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 55fC~J< { %B.yW`,X this.sURL = sURL; %xyou:~0zs this.nStartPos = nStart; b"{'T]"*j this.nEndPos = nEnd; N=7pK&NHSG nThreadID = id; #NryLE!/ fileAccessI = new FileAccessI(sName,nStartPos);//定位 Ug<#en } !/]WrGqbS e\:+uVzz FFEfI4&SfS public void run() W*I(f]8:y` { ZG&>:Si; while(nStartPos < nEndPos && !bStop) mmk=97 { lp^<3o*1 Ev}C<zk* #*UN >X try{ $[a8$VY^Cm URL url = new URL(sURL); |3KLk ?2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^0\ httpConnection.setRequestProperty("User-Agent","NetFox"); Y<%@s}zc String sProperty = "bytes="+nStartPos+"-"; aq@8"b(. httpConnection.setRequestProperty("RANGE",sProperty); '?p<lu^^B Utility.log(sProperty); XLrwxj0 $cU!m(SILQ $arK( InputStream input = httpConnection.getInputStream(); 5lUF7:A># //logResponseHead(httpConnection); %#xaA'?
[ !'9Feoez 9~/J35 byte[] b = new byte[1024]; v: OR int nRead; /^#;d
UB while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) {C N~S*m { '$ t nStartPos += fileAccessI.write(b,0,nRead); abfW[J //if(nThreadID == 1) /Y2}a<3&0 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _v> }_S } hJpxf,?'K GE%Z9#E P 'od` Utility.log("Thread " + nThreadID + " is over!"); ud'-;W bDownOver = true; "4{LN}` //nPos = fileAccessI.write (b,0,nRead); LQRQA[^ } F7EKoDt catch(Exception e){e.printStackTrace ();} [R^iF } (Fhs" } WGZ9B^A jYmR %|q>pin2 //打印回应的头信息 sl`s_$J public void logResponseHead(HttpURLConnection con) ~ls[Sl@ { g'n7T|h
~ for(int i=1;;i++) S p;G'*g { Vg>dI&O String header=con.getHeaderFieldKey(i); ic#`N0s? if(header!=null) VKG&Y_7N //responseHeaders.put(header,httpConnection.getHeaderField(header)); 8h*Icf Utility.log(header+" : "+con.getHeaderField(header)); 'R'*kxf else V8C:"UZ; break; /)}q Xx& } ($; 77fPR } `-J%pEIza TE7nJ gm L>aLqQ3 public void splitterStop() _4U5 { lJ}_G>GJ bStop = true; DpvI[r//'* } L(|N[# c]n1':FT" 7'W%blg!V } QLvHQtzwX J$GUB3
G 1VG4S){}\9 /* 2db3I:;E **FileAccess.java ZQ%'`q\c *//文件访问(定位,写) ~-_kM package NetFox; Gi?/C&1T import java.io.*; L\xk:j1[ Ez
fN&8E --HZX public class FileAccessI implements Serializable{
H Y&DmE '$ => //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Mh:L$f0A%O RandomAccessFile oSavedFile; l3Q(TH ~I long nPos; #*K}IBz t4zkt!`B Oj3.q#)`Z public FileAccessI() throws IOException c1k/UcEcg~ { M3c$=> this("",0); e.7EU } IEsEdw]aZE bYpntV (_mnB W public FileAccessI(String sName,long nPos) throws IOException 2Mc3|T4)U { )U7t oSavedFile = new RandomAccessFile(sName,"rw"); dJeNbVd this.nPos = nPos; ~J wb`g. oSavedFile.seek(nPos); RKHyw08 } (2J: # eg\v0Y!rI cl[BF'.H public synchronized int write(byte[] b,int nStart,int nLen) 5\5/ { XHK<AO^ int n = -1; }Jy8.<Gd^ try{ AS'R?aX|C oSavedFile.write(b,nStart,nLen); /YW>*?"N n = nLen; CrC^1K } :dl]h&C^ catch(IOException e) I7 |Pi[e { ~?4PBq e.printStackTrace (); ZkRx1S"m } rb5~XnJk \o}xF@sM5 z;{iM/Xe return n; TN!j13, } U\4g#!qj M -cTRd-i ww\CQ6/h } l&OKBUG 2&:f&" h)ECf?r< /* QRc{vUR& **SiteInfoBean.java w28o}$b` */ @=bLDTx;c) package NetFox; A!s`[2 Z jSh5!6O ddJQC|xR} public class SiteInfoBean { >kj`7GA l2zFKCGF( @Owb?(6? private String sSiteURL; //Site's URL -BrMp%C private String sFilePath; //Saved File's Path Su
586;\ private String sFileName; //Saved File's Name #I{h\x><? private int nSplitter; //Count of Splited Downloading File :1cV;gJ A -H& NPhhD&W_ public SiteInfoBean() rn/ /% {//nSplitter的缺省值为5 ]
bM)t< //default value of nSplitter is 5 6}gls}[0{e this("","","",5); KyVQh8 } ocqU=^ta g`{;(/M+ 8{wwd:6 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 9oRy)_5Z(= { /[a~3^Gs^ sSiteURL= sURL; Tzt8h\Q^z sFilePath = sPath; -[*,^Ti` sFileName = sName; SN9kFFIPb= this.nSplitter = nSpiltter; m'Amli@[ ''q@> k$R~R-' } ~Sg5:T3 b*;Si7- 9oyE$S h] public String getSSiteURL() 04LI]' { NO7J!k? return sSiteURL; +6sy-<ZL: } Ed0QQyC@9 _(_a*ml j@W.&- _ public void setSSiteURL(String value) **w!CaqvY { (yu/l6[ sSiteURL = value; @oNH@a
j% } *? 5*m+ oz,np@f)J bx#>BK! public String getSFilePath() F |d\k Q { o1-m1 <ft return sFilePath; 3B1XZm } #ZJ _T`l 3AHlSX G! ]k#.^A, public void setSFilePath(String value) K#%&0D! { sd ,J3 sFilePath = value; $h2){*5E{ } mPOGidxix K{x\4 X>1,!I9 public String getSFileName() KK1gNC4R { ?zeJ#i return sFileName; ^WHE$4U` } o>).Cj @E;=*9ek{u 4iqoR$3Fc public void setSFileName(String value) LIS)(X<]? { 9 %8"e>~ sFileName = value; D N'3QQn } na#CpS;pc qIVx9jNN 8qY79)vD4E public int getNSplitter() %b%-Ogz;4 { vL|SY_:4 return nSplitter; Keuf9u } \.C+ue TlXI|3Ip B:dB,3,`( public void setNSplitter(int nCount) D2<fw# { t#Z-mv:( nSplitter = nCount; {v=T [D } vX{J' H]u } $&y%=-] | T?:Rdo!:u u5O+1sZ"6 /* GS0;bI4ay **Utility.java o}$XH,-9& */ aK&b{d package NetFox; qmnZAk !2 LCLN\ VLS0XKI) public class Utility { ;Yx )tWQI 8}c$XmCM ?{\nf7Y public Utility() ^$%S &W { M9Cv
wMi ZW-yP2 ]=.\-K } ?i)f^O 0)%YNaskj //线程睡眠 6FUw"|\u{ public static void sleep(int nSecond) N96jJk { ~Fe${2 try{ )i~cr2Hk Thread.sleep(nSecond); ~J5+i9T.) } 1q~+E\x catch(Exception e) 0]>u)% { +!k&Yje e.printStackTrace (); H9KKed47d/ } N8!cO[3Oh } {s)+R[?m<o %u`8minCt //日志 J1/?JfF public static void log(String sMsg) BHd&yIyI { k]W[` System.err.println(sMsg); GT~)nC9f } ZtV9&rd7 ]Oh@,V8
<p}R~zk public static void log(int sMsg) aHs^tPg { {n(b{ibl System.err.println(sMsg); ;6gDV`Twy } 4,..kSA3iw } h"Xg;(K g+DzscIT _6_IP0; /* uG?_< mun **TestMethod.java $u7;TW6QD */ w ihH?~] package NetFox; .9,zL=)Ba 1)9sf0LyU j;']cWe public class TestMethod { 2]I4M[|&z +)k b( UUSq$~Ct public TestMethod()
u*e.yN { ///xx/weblogic60b2_win.exe i#7DR>XF/ try{ D Gr>
2 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); IKABB W //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); A&s:\3*Kh SiteFileFetch fileFetch = new SiteFileFetch(bean); B,M(@5wz fileFetch.start(); UV5Ie!\nm } O>SLOWgha catch(Exception e){e.printStackTrace ();} GRGzP&}@ -0?~ 7P"| J\ } c#a@n 4 anIAM E8>Rui@9 public static void main(String[] args) >^%7@i:@U { S7=Bd[4 new TestMethod(); q+P|l5_
t } aT_&x@x } 8S>&WR%jH] 点击下载更多相关资料
|