-
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
|
/* +<sv/gEt **SiteFileFetch.java !4T7@V`G */ N?c!uO|h| package NetFox; +LaR_n[ import java.io.*; (CY#B%* import java.net.*; G]gc*\4 5:SS2>~g }%S#d&wh$_ public class SiteFileFetch extends Thread { p u[S ZY8:7Q@P> KH9D}, SiteInfoBean siteInfoBean = null; //文件信息Bean =L,7~9 long[] nStartPos; //开始位置 @}_Wl<kn long[] nEndPos; //结束位置 Z':w
X FileSplitterFetch[] fileSplitterFetch; //子线程对象 %kV #UzL long nFileLength; //文件长度 4X$|jGQ\ boolean bFirst = true; //是否第一次取文件 _{?-=<V'_ boolean bStop = false; //停止标志 m 8P`n File tmpFile; //文件下载的临时信息 ;~n^/D2. DataOutputStream output; //输出到文件的输出流 n?8xRaEf 1oL3y;>iL //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) luCwP public SiteFileFetch(SiteInfoBean bean) throws IOException B[r04YGh { azl!#% siteInfoBean = bean; G`,M?lmL //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); A{ . A1 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ]Tn""3#1g if(tmpFile.exists ()) mh,a}bX{ { NoT%z$1n bFirst = false; Dn+hI_"#_ read_nPos(); >]ZW.?1h } u Qz!of%x else 9QEK|x`8 { ;~( yv|f6 nStartPos = new long[bean.getNSplitter()]; d,0Klew nEndPos = new long[bean.getNSplitter()]; HEe_K!_ } k6(0:/C l6pvQ| 0uJ??4N9 e}TDo`q }
T}Ve:S Qv1cf ria.MCe\! public void run() SX[ { r)[Xzn //获得文件长度 `"y:/F"{ //分割文件 @$5=4HA //实例FileSplitterFetch {EyWSf" //启动FileSplitterFetch线程 ?I;PJj //等待子线程返回 mIv}%hD try{ wfQImCZ>l if(bFirst) y`8jz,&. { mtVoA8(6 nFileLength = getFileSize(); #bGYd}BfD if(nFileLength == -1) 5GDg_9Bz { 8Bx58$xRq System.err.println("File Length is not known!"); )Qh*@=$- } axz.[L_elB else if(nFileLength == -2) "$A5:1; { -mG ,_}F System.err.println("File is not access!"); o8N,mGj} } P}"uC`036 else 7
/XfPF { &M6Zsmo for(int i=0;i<nStartPos.length;i++) !>EK
%OO { m`Pk )c0 nStartPos = (long)(i*(nFileLength/nStartPos.length)); Sn[/'V^$a } N@V:nCl for(int i=0;i<nEndPos.length-1;i++) LU+}iA) { mi@ni+2Tn nEndPos = nStartPos[i+1]; !JA//{? } Nu@dMG<5 nEndPos[nEndPos.length-1] = nFileLength; |
&/_{T } d^d+8R } _3q}K Zhc99 L&K K<MWiB& //启动子线程 =LKf.@]# fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; >FqU=Q for(int i=0;i<nStartPos.length;i++) B{>x { 4++p K;I fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =-/sB>-C siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), eZ{Ce.lNR nStartPos,nEndPos,i); bmO(tQS$5 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); I6PReVIb fileSplitterFetch.start(); qD,/Qu62 } oObQN;A@6 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), xMFEeSzl>S siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); sCE%./h] // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", )a<MW66 nEndPos = " + nFileLength); {TaYkuWS // fileSplitterFetch[nPos.length-1].start(); ~"r(PCa@ >S]"-0tGD= .HPa\b\L> //等待子线程结束 ba^/Ar(B //int count = 0; -x-EU#.G //是否结束while循环 6_>(9&g`zV boolean breakWhile = false; 2Mj_wc M"yOWD~s~ o,{]<Sm while(!bStop) GIhFOK { 'u6n,yRm write_nPos(); H{1'- wB Utility.sleep(500); HF*j=qt! breakWhile = true; n_kE L9d|7.b |BXp ` for(int i=0;i<nStartPos.length;i++) @Y!B~ { ^7YZ>^ if(!fileSplitterFetch.bDownOver) mQ2=t% { S{N=9934_ breakWhile = false; Ey{p;;H break; gnw">H } ~bz$] o-< } 9K-,#a if(breakWhile) uobQS! break; sW76RKX8 ?0+N M9?f`9 //count++; F:8@ ]tA& //if(count>4) ;9'] na // siteStop(); d=dHY(ms] } eu'~(_2 &ju.5v| dnkHx System.err.println("文件下载结束!"); MhIHfW]b } 3rX40>Cs8 catch(Exception e){e.printStackTrace ();} X2'XbG3 } S" (Nf+ux @TJ I8k+Rk* //获得文件长度 p5l|qs public long getFileSize() C$4{'J-ZH { Ok<,_yh int nFileLength = -1; j{6O:d6([$ try{ -B #K}xL|x URL url = new URL(siteInfoBean.getSSiteURL()); 1 ]ePU8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;7*T6~tv httpConnection.setRequestProperty("User-Agent","NetFox"); yw{r:fy t :~,7 l[C_vUg int responseCode=httpConnection.getResponseCode(); 8+H 0 if(responseCode>=400) =]1cVnPI { H3( @Q^9 processErrorCode(responseCode); &joP-!" return -2; //-2 represent access is error j1=su~ } m[Mw2 F i`=%X{9 9+ |W; String sHeader; plpb4>
S =MwR)CI# (L:Mdo for(int i=1;;i++) zx@L sp { c/V0AKkS
8 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Z+=-)&L //Utility.log(in.readLine()); I@TH^8( sHeader=httpConnection.getHeaderFieldKey(i); N1"p ;czK if(sHeader!=null) ;te( {u+ { T8d=@8g,% if(sHeader.equals("Content-Length")) Dw$RHogb~y { F<Xtp8 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); a'r1or4 break; }KT$J G? } gw^W6v } 5&xbGEP$ else ZD4aT1|Q7 break; x+b.9f4xJ } + WT?p] } VCwC$ts catch(IOException e){e.printStackTrace ();} u"m TS& catch(Exception e){e.printStackTrace ();} BCtKxtbS [Y
j:H HDaeJk Utility.log(nFileLength); AQ,"):ofvT i)$ySlEh | >'q%xK return nFileLength; z[K)0@8 6 } /IF?|71,m 2/\I/QkTs Mi\-
9- //保存下载信息(文件指针位置) ta^$&$l private void write_nPos() r! [Qpb-: { p_)ttcpi1 try{ )0g!lCfb output = new DataOutputStream(new FileOutputStream(tmpFile)); `gyke2n output.writeInt(nStartPos.length); .`(YCn?\ for(int i=0;i<nStartPos.length;i++) .1z=VLKF' { hBVm;` // output.writeLong(nPos); pl$wy}W- output.writeLong(fileSplitterFetch.nStartPos); %(]B1Zg6, output.writeLong(fileSplitterFetch.nEndPos); ?bg
/%o } |<O^M q output.close(); F{rC{5@fj } *9aI\#} catch(IOException e){e.printStackTrace ();} uGHM ]"!) catch(Exception e){e.printStackTrace ();} v=Q!ioE7 } eu":\ks /1$u|Gs
* 7|jy:F,w% //读取保存的下载信息(文件指针位置) cI/}rZ+ private void read_nPos() b"nkF\P@Fj { f1sp6S0V\ try{ $4qM\3x0, DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); #2"'tHf4 int nCount = input.readInt(); 9+/D\|"{ nStartPos = new long[nCount]; +SW|/oIU nEndPos = new long[nCount]; MWK)Bn for(int i=0;i<nStartPos.length;i++) @"wX#ot { (!qfd
Qq# nStartPos = input.readLong(); C6h[L nEndPos = input.readLong(); %LD(S* >7 } mn*}U R input.close(); J8ScKMUN2 } %oquHkX%OJ catch(IOException e){e.printStackTrace ();} %UhLCyC/ catch(Exception e){e.printStackTrace ();} *{5/" H5 } ;=k{[g 'gv 2%9L'- ?GqH/
(O private void processErrorCode(int nErrorCode) $yq76 { g^7zDU&' System.err.println("Error Code : " + nErrorCode); '-Oh$hqCx| } U#Iwe= .v+W> dBS_N/ //停止文件下载 a .?AniB0 public void siteStop() _+H $Pa}? { RLzqpE<rJ bStop = true;
?P4y$P for(int i=0;i<nStartPos.length;i++) $!TMS&Wk fileSplitterFetch.splitterStop(); -]{
_^ (44L8)I.D )>U"WZ'< } #2$wI^O } K9yZG //负责部分文件的抓取 +XW1,ly~ **FileSplitterFetch.java qg|ark*1u */ j}`ku9S~ package NetFox; E1dhj3+3 1ox#hQBoS XsDZ<j%x89 import java.io.*; Ts3!mjn import java.net.*; 7oc Ng O*!f%} 27,c}OS5o public class FileSplitterFetch extends Thread { 7I@df.rf6J {v|ib112; F! Cn'* String sURL; //File URL og~a*my3 long nStartPos; //File Snippet Start Position 3x7fa^umR long nEndPos; //File Snippet End Position 5rc3jIXc{| int nThreadID; //Thread's ID 9I$}=&" boolean bDownOver = false; //Downing is over :eT\XtxM~{ boolean bStop = false; //Stop identical H q?F @X FileAccessI fileAccessI = null; //File Access interface )?$@cvf m1X*I TTbJ9O<43 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException s&Al4>}.f { XD|Xd|/ { this.sURL = sURL; uEG4^ this.nStartPos = nStart; ;!lwB this.nEndPos = nEnd; bv7xh*/ nThreadID = id; dmcY]m fileAccessI = new FileAccessI(sName,nStartPos);//定位 "%S-(ue: } VUP.
\Vry GoH.0eQ^ dm40qj public void run() 5wE6 gRJ { jC$~m#F while(nStartPos < nEndPos && !bStop) O '`|(L { z@?y(E }NRt:JC vILB$%I try{ UH;bg}=8 URL url = new URL(sURL); a`]ZyG*P HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); {7MY*&P$, httpConnection.setRequestProperty("User-Agent","NetFox"); v6| [p String sProperty = "bytes="+nStartPos+"-"; /~7M @`1 httpConnection.setRequestProperty("RANGE",sProperty); mG@[~w+ Utility.log(sProperty); +2}Ar<elP #7]>ozKm r'_#rl InputStream input = httpConnection.getInputStream(); z4` :n. //logResponseHead(httpConnection); u$aN~6HG SG&H^V8 f)gV2f0t byte[] b = new byte[1024]; Eza^Tbq%j? int nRead; AE`UnlUSF while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) n "^rS}Y] { 1vCp<D9< nStartPos += fileAccessI.write(b,0,nRead); 0(9gTxdB //if(nThreadID == 1) Xc^(e?L4 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); m^0 I3; } S4_ZG>\VT +
65<|0 TiZ
MY:^ Utility.log("Thread " + nThreadID + " is over!"); k`]76C7 bDownOver = true; Zy{hYHQ //nPos = fileAccessI.write (b,0,nRead); _ouZd. } 8wZ
$Hq catch(Exception e){e.printStackTrace ();} !{ _:k%B } H4{7,n } 'O9Yu{M DYC2bs> UEm4):/} //打印回应的头信息 g2*}XS3 public void logResponseHead(HttpURLConnection con) $P#+Y,r~\ { 2chT^3e for(int i=1;;i++) 30(e6T; { +W8#] u| String header=con.getHeaderFieldKey(i); :D>flZi if(header!=null) [nX{sM% //responseHeaders.put(header,httpConnection.getHeaderField(header)); -;RAW1]}Y$ Utility.log(header+" : "+con.getHeaderField(header)); V:+vB " else d{(Rs.GuP break; ;- Vs|X } hp}rCy|01 } {!{T,_ J /X#OX8gb] I\rjw$V# public void splitterStop() 9ao?\]&t { f(K1,L:&7 bStop = true; ;ByCtVm2 } #q9BU: E%stFyr9`/ Do^yer~ } -xJ\/"A upJy,|5 }v?l0Gk( /* %?qzP' **FileAccess.java E)X_ *//文件访问(定位,写) #>BC|/P} package NetFox; 2(e;pM2Dq import java.io.*;
=&qfmq 9c1q:>| (5[#?_~ public class FileAccessI implements Serializable{ 36.mf_AM 6(1
&6|o3 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 S_VzmCi RandomAccessFile oSavedFile; -~lrv#5Q long nPos; !VrBoU4<d !}1l8Y y] Cx[ public FileAccessI() throws IOException BP4vOZ0$ { gB,Q4acjj this("",0); 4xFAFK~lx } @:!% Z` mt e3k=17 @e7_&EGR? public FileAccessI(String sName,long nPos) throws IOException fg1uqS1rg { hKsx7`[ oSavedFile = new RandomAccessFile(sName,"rw"); pH@yE Vf this.nPos = nPos; X\<a|/{V A oSavedFile.seek(nPos); Y!|}; } (.{. " m5KLi
&R Vt9o8naz public synchronized int write(byte[] b,int nStart,int nLen) mcQ\"9 ;pY { 6jl{^dI int n = -1; pMp@W`i^6 try{ }JT&lyO< b oSavedFile.write(b,nStart,nLen); pBQ[lPCY/ n = nLen; F1`mq2^@ } X&K,,C catch(IOException e) +ZBj_Vw*| { ~n/:a e.printStackTrace (); K:pG<oV|} } MUN:}S *S Z]xrs C{ Z*5) return n; (hv}K*c{ } .=c@ps ^4saB+qm ZQ[s: } xrJ0 ~<osL %u]>K(tU /* [Kbna>` **SiteInfoBean.java O9p^P%U " */ 0upZ4eN package NetFox; ,-Lv3 2b:I. mFIIqkUAL public class SiteInfoBean { v\kd78, ?/p."N:]H 0E&XD&D private String sSiteURL; //Site's URL +.hJ[|F1& private String sFilePath; //Saved File's Path <)@^TRS private String sFileName; //Saved File's Name _)#~D*3 private int nSplitter; //Count of Splited Downloading File D,uT#P y|wR)\ 23q2u6.F` public SiteInfoBean() `7',RUj|D {//nSplitter的缺省值为5 _'s5FlZq //default value of nSplitter is 5 \z2d=E this("","","",5); dBW#PRg } ['0^gN$:e IRI<no c;R.rV< public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 8EI&}I { Zo,]Dx sSiteURL= sURL; a+\s 0Qo< sFilePath = sPath; HMR!XF&JjC sFileName = sName; 8ZO~=e this.nSplitter = nSpiltter; W8!8/IZbN
lx~mn~;x lt}U,p,S } ra\|c>[% aII:Pzh]B @;d7#!:cE public String getSSiteURL() Je`
w/Hl/U { Q9t.*+ return sSiteURL; "S&1J8D| } z7lbb*Xe nSU7,K`PM W@FGU public void setSSiteURL(String value) c<qJs-C4; { ^#2Y4[@ sSiteURL = value; * km- pp } jY\YSQ w;^7FuBaC 0'*'%Iga public String getSFilePath() Cd7d-'EQn { <NM Os"NB return sFilePath; UgLJV2M6 } mHC36ba GJuU?h#:/{ gr$H?|n l public void setSFilePath(String value) )i>T\B { DZ|/#- k sFilePath = value; 3bB%@^< } %] 7.E !^A t{[U *yA.D? public String getSFileName() Bk~M ^AK@~ { .'N#qs_ return sFileName; {eo?vA8SE } /?QBMI oI%.oP}G J7rfHhz public void setSFileName(String value) cV)~%e/ { GD .>u sFileName = value; <3Hu(Jx<O } iD9hqiX& MMUw+jM4 #Y<b'7yJ public int getNSplitter() b~FmX { }L*cP;m# return nSplitter; KHXnB } pG:)u
cj u@zBE?
g r7p>`>_Q\ public void setNSplitter(int nCount) zL3'',Ha { doaqHri\, nSplitter = nCount; S-+^L| } meV
RdQ } _26F[R1><~ x;*KRO bwh.ekf8 /* qT L@N9 **Utility.java GQ9g $&T */ D<cHa | package NetFox; V]9?9-r 3bPvL/\Lb ~UJ_Rr54 public class Utility { KcjP39@I I*K~GXWs# yS-owtVCGF public Utility() `_v|O{DC{ { ^UK6q2[ x_5H_! \# sxLq'3( } !P0Oq)q ?wx|n_3<: //线程睡眠 D*j\gI public static void sleep(int nSecond) w~g)Dz2G { `4 A%BKYB try{ KmkPq] Thread.sleep(nSecond); ),)]gw71QW } [e'Ts#($A catch(Exception e) f/qG:yTV` { Sf\mg4, e.printStackTrace (); oa|nQ`[ } fhmqO0 } fm\IQqIK% pJ5Sxgv{; //日志 DFt1{qS8@u public static void log(String sMsg) K(HP PM\ { ,tL<?6_ System.err.println(sMsg); L[*Xrp;/& } I.\fhNxHY /^\6q"' 'DQKpk' public static void log(int sMsg) (v8jVbg { m>6,{g) System.err.println(sMsg); pemb2HQ'4j } S0Y$$r } u#Qd`@p Ro?aDrQ S:Ne g!` /* FXOA1VEg **TestMethod.java l7P~_X_)" */ fNx3\<~V= package NetFox; X] &Q^ m>'sM1s fgP_NYfOj public class TestMethod { tq^H) T?c:z?j_9 >_]j{}~\k public TestMethod() vd9><W { ///xx/weblogic60b2_win.exe /nRi19a%xU try{ lM5Xw SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); =?3D:k7z //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); s7<x~v+^ SiteFileFetch fileFetch = new SiteFileFetch(bean); FHI`/ fileFetch.start(); RI"A'/56 } -lm\~VZT3 catch(Exception e){e.printStackTrace ();} 0p_/eWww- nj~1y') C_Y^< } YzSUJ=0/ #|34(ML ;z>)&F public static void main(String[] args) hX]vZR&R { `bffw:;% new TestMethod(); =LS?:Mhm } jyf[O - } Qd 1Q~PBla 点击下载更多相关资料
|