-
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
|
/* 1r<'&f5 **SiteFileFetch.java 4TcW% */ j^D/,SW package NetFox; 1t7T\~+F import java.io.*; hmv*IF. import java.net.*; H4BuxM_r !
;R}= "SpsSQ public class SiteFileFetch extends Thread { aK8X,1g%) @Dd3mWKq on f7V SiteInfoBean siteInfoBean = null; //文件信息Bean Olr'n% } long[] nStartPos; //开始位置 ;RW5XnVx long[] nEndPos; //结束位置 cB2~W%H FileSplitterFetch[] fileSplitterFetch; //子线程对象 7+m.:~H3} long nFileLength; //文件长度 <4*)J9V^s= boolean bFirst = true; //是否第一次取文件 U-#vssJhk boolean bStop = false; //停止标志 K?=g
IC: File tmpFile; //文件下载的临时信息 rM20Y(| DataOutputStream output; //输出到文件的输出流 <'O|7.
^^
<^adt
*m //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) )>!y7/3 public SiteFileFetch(SiteInfoBean bean) throws IOException -V:7j8 { "=UhTE siteInfoBean = bean; =Ct$!uun //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Bacmrf tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); "SV/'0 if(tmpFile.exists ()) 8b $e) { #|6M*;l N| bFirst = false; ?8$h%Ov- read_nPos(); m"vWu0/# } 'l._00yu else sB<y(}u
{ xOc&n0}% nStartPos = new long[bean.getNSplitter()]; U
zMIm nEndPos = new long[bean.getNSplitter()]; hFDo{yI } `YK#m4gc / KxZ+Ww>v ptTp63+ 86~q pN } <is%lx(GDX 0vcFX)]yW ''B}^yKEW public void run() |$c~Jq { M;E$ ]Z9 //获得文件长度 nY_+V{F //分割文件 Cx
;n#dn* //实例FileSplitterFetch HeM- //启动FileSplitterFetch线程 ASaNac-3 //等待子线程返回 jNP%BNd1f try{ E^t}p[s if(bFirst) D<xDj#Z~1 { o*s3"Ib nFileLength = getFileSize(); @%[
VegT if(nFileLength == -1) H)i%\7F5 { 0/zgjT|fe System.err.println("File Length is not known!"); w(nQ:;oC } -\}Ix> else if(nFileLength == -2) m/NXifi8l { r<-@.$lf System.err.println("File is not access!"); )[5 .*g@ } ~9dAoILrl else mf)E%qo { hB-<GGcO < for(int i=0;i<nStartPos.length;i++) {&.?u1C.\ { 1fU~&?&-u nStartPos = (long)(i*(nFileLength/nStartPos.length)); x-@6U } ri1:q.:I] for(int i=0;i<nEndPos.length-1;i++) D2Dk7//82Y { p`3$NCJN nEndPos = nStartPos[i+1]; =s1Pf__<k } /SQ1i}% nEndPos[nEndPos.length-1] = nFileLength; W&Kjh|[1QZ } #nJ&`woZt } S s#UX_DT_ ;>B06v Zcxj.F(, //启动子线程 2^=.jML[ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Fx' E"d for(int i=0;i<nStartPos.length;i++) a1#
'uS9W { )>rHM6-W fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), glP
W9q,f siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), D``>1IA] nStartPos,nEndPos,i); J1{ucFa Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); {A MoE+U fileSplitterFetch.start(); \o{rw0w0 } nwPU{4#l< // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), U Zc%XZ`"V siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 5mB'\xGO2 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", /V)4B4 nEndPos = " + nFileLength); cp<jwcc! // fileSplitterFetch[nPos.length-1].start(); 4+15` Blnc y f/RDo4 //等待子线程结束 #~`]eM5`J //int count = 0; N3rQ]HZiP //是否结束while循环 .q9wyVi7GI boolean breakWhile = false; {>R'IjFc \Yd
0oe82 F otHITw[ while(!bStop) S K7b]J> { 3Mt Alc0xp write_nPos(); Z@bGLS Utility.sleep(500); <<.%Gk breakWhile = true; Q XV8][ f!aE/e\ a#4 'X* for(int i=0;i<nStartPos.length;i++) iHL`r1I! { =Frbhh57 if(!fileSplitterFetch.bDownOver) JypXQC}~ { ^NPbD<~Lb breakWhile = false; ;IYH5sG{ break; yCOIv!/zy } kw.IVz< } zS+_6s if(breakWhile) a5xmIp@6 break; K JX@?1" @CU~3Md* %1jApCJ //count++; ,,KGcDBj //if(count>4) Oe[qfsdW // siteStop(); {-?8r> } wz(D
}N5 {IpIQ-@l ]h6mJ{k System.err.println("文件下载结束!"); I_h{n{,sr } ;&%G)f catch(Exception e){e.printStackTrace ();} :u$+lq } 5};$>47m %">
Oy&3 f8'$Mn, //获得文件长度 0{
;[k public long getFileSize() p* { OnKPD=< int nFileLength = -1; w(xRL#% try{ s"solPw URL url = new URL(siteInfoBean.getSSiteURL()); @\UoZv( HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); MlM2(/ok httpConnection.setRequestProperty("User-Agent","NetFox"); 5h4E>LB.B +e6c4Tw/ 6(X5n5C int responseCode=httpConnection.getResponseCode(); KZxA\,Y'5 if(responseCode>=400) S=wJ{?gzAK { K{s%h0 processErrorCode(responseCode); yU@~UCmja return -2; //-2 represent access is error GK/Q]}Q8pZ } -MqWcB9& 8uO@S*)0 M5Twulz/w String sHeader; b:iZ.I ;|Z;YK@20 ;\$P;-VY for(int i=1;;i++) joN}N }U { CY4_= //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); hR$lX8 //Utility.log(in.readLine()); ;^,2
Qs M sHeader=httpConnection.getHeaderFieldKey(i); N+vU@)_lC if(sHeader!=null) ecH-JPm' { <}E^r_NvD if(sHeader.equals("Content-Length")) |
3`qT#p{ { >Ufjmm${ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Rro{A+[,X break; FBGHVV
w! } 6rnehv!p } Ohm>^N;
else a9E!2o+, break; 4pF U` g= } %}=$HwN) } / -=(51}E catch(IOException e){e.printStackTrace ();} p0.?R catch(Exception e){e.printStackTrace ();} i;0`d0^ ~?}/L'q!b ?CS
jn Utility.log(nFileLength); I_yIVw; JXlFo3< c=2e? return nFileLength; Gc9^Z= } DJE/u qE xLZQ\2q \2<2&=h? //保存下载信息(文件指针位置) =&fBmV private void write_nPos() ;f-|rC_" { Q:~w;I try{ 71tMX[x output = new DataOutputStream(new FileOutputStream(tmpFile)); Et'C4od s output.writeInt(nStartPos.length); bIm$7a`T for(int i=0;i<nStartPos.length;i++) $UjSP { JMOP/]%D // output.writeLong(nPos); &Jj> jCg output.writeLong(fileSplitterFetch.nStartPos); dITnPb)i output.writeLong(fileSplitterFetch.nEndPos); 7o
z(hO~ } Za!c=(5 output.close(); [6S"iNiyKT } MatC2-aV1 catch(IOException e){e.printStackTrace ();} *vhm catch(Exception e){e.printStackTrace ();} (r[<g*+3 } 8"LaP3U ioi :,q3?l6 //读取保存的下载信息(文件指针位置) &SN$D5U' private void read_nPos() !P Gow { 0acY@_ try{ !CBx$1z DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 0v7;ZxD int nCount = input.readInt(); f!$J_dz nStartPos = new long[nCount]; ` `;$Kr nEndPos = new long[nCount]; Mqh~ 5NM for(int i=0;i<nStartPos.length;i++) 6vaxp|D { d7^XP nStartPos = input.readLong(); *VlYl" nEndPos = input.readLong(); J$I1*~I4v } \[oHt:$do input.close(); O[L8(+Sn } BWPYHWW}E catch(IOException e){e.printStackTrace ();} 5ZKnxEW,( catch(Exception e){e.printStackTrace ();} 2mlE;.}8 } |%V.Lae * Yr-:s9J9 ?*s!&-KI private void processErrorCode(int nErrorCode) zBs7]z!eP { nIi_4=Z
System.err.println("Error Code : " + nErrorCode); 'j)eqoj } a;S^<8 Y+j KP*ri |TUpv*pq //停止文件下载 1I+5 public void siteStop() /*O,T { B7 PmG
f)b bStop = true; ~Op1NE for(int i=0;i<nStartPos.length;i++) ]s -6GT fileSplitterFetch.splitterStop(); 5,c` LuqaGy}>- @Hf}PBb } Kmnr}Lp9 } $F-XXBp //负责部分文件的抓取 )g --=w3 **FileSplitterFetch.java &rd(q'Vi
*/ h[8y$.YsC package NetFox; `l+SJLyJ% 1}uDgz^ `@eH4}L* import java.io.*; L&N"&\K2U import java.net.*; Xp~]kRm9 X2uX+}h*tA u
.2sB6} public class FileSplitterFetch extends Thread { 19.cf3Dh ".)_kt[ H+;wnI>@ String sURL; //File URL Ax0,7,8y long nStartPos; //File Snippet Start Position ZYsFd_ long nEndPos; //File Snippet End Position cBI)? int nThreadID; //Thread's ID xB(:d'1| boolean bDownOver = false; //Downing is over Rpk`fxAO boolean bStop = false; //Stop identical Y2X1!Em>B FileAccessI fileAccessI = null; //File Access interface rxK0<pWJhx upDQNG>d Vi#im`@ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException RNdnlD#P { jEsTw_ this.sURL = sURL; %jxuH+L
this.nStartPos = nStart; m=MT`-: this.nEndPos = nEnd; JC"K{V{ nThreadID = id; X6.O; fileAccessI = new FileAccessI(sName,nStartPos);//定位 OQ7c|O } ?X'*
p<` X^Y9T`mQ} WQpJd7 public void run() / D ]B { zb/Xfu.)?6 while(nStartPos < nEndPos && !bStop) pYVy(]1I(3 { $/TA5h 3}21bL JJ?ri, try{ zt2-w/[Q URL url = new URL(sURL); WdqK/s<jM HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); qm=F6*@} httpConnection.setRequestProperty("User-Agent","NetFox"); t4_K>Mj+d String sProperty = "bytes="+nStartPos+"-"; 6\Vu#r httpConnection.setRequestProperty("RANGE",sProperty); o'7ju~0L Utility.log(sProperty); X-$td~r kA<r:/ !>y}Xq{bm3 InputStream input = httpConnection.getInputStream(); gVU\^KN] //logResponseHead(httpConnection); )95yV;n 3c ^=<i
% ' 1'1T5x~ byte[] b = new byte[1024]; 1vs>2` DLa int nRead; 0Eu$-) while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) W4*BR_H&* { %]0U60 nStartPos += fileAccessI.write(b,0,nRead); 0a6@HwO //if(nThreadID == 1) q;../h]Ne // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Gd6 ;'ZCmY } {2k<
k(, aE+$&_>ef ,XG|oo- Utility.log("Thread " + nThreadID + " is over!"); $ t# ,'M bDownOver = true; }0*ra37z> //nPos = fileAccessI.write (b,0,nRead); &@utAuI } &9dr+o-(~ catch(Exception e){e.printStackTrace ();} 0 ,Qj: } sQ:VrXwP } JJ9e{~0I FR,#s^kF y8*@dRrq //打印回应的头信息 mz$Wo *FB public void logResponseHead(HttpURLConnection con) f93rY< { renmz,dJ, for(int i=1;;i++) bOSYr<R& { CDwIq>0j String header=con.getHeaderFieldKey(i); [^d6cMEOlc if(header!=null) q8xc70: R //responseHeaders.put(header,httpConnection.getHeaderField(header)); _l!U[{l*d Utility.log(header+" : "+con.getHeaderField(header)); 9g&)6,< else 76_8e{zbr break; wdcryejCkr } E}b>7L&w } .`Old{< ?^48Zq6wM {`Fx~w;i public void splitterStop() #!=>muZt { 3w^J"O/T bStop = true; Z!RRe]"y } +ersP@G w] 5U =Mu'+,dT } W:{PBb"x8 }Cmj (k`~ h*\TCl) /* ^{fi^lL= **FileAccess.java K+7yUF8XP *//文件访问(定位,写) APQQ:'>N4~ package NetFox; #}t1 import java.io.*; X$uz=) lN)Y vA2,&%jw public class FileAccessI implements Serializable{ EN-8uY. :rTKqX&"j //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 9&XV}I,~?| RandomAccessFile oSavedFile; zqvRkMWc M long nPos; XMeL^|D _
r^90 A4#3O5kij public FileAccessI() throws IOException 6cQeL$,SQ { gc,J2B]61 this("",0); \sHy. { } J:g<RZZ1 V`R)#G>IH% <@U. public FileAccessI(String sName,long nPos) throws IOException U!a!|s> { vR%j#v|s oSavedFile = new RandomAccessFile(sName,"rw"); h7de9Rt this.nPos = nPos; Wk\mgGn+ oSavedFile.seek(nPos); M9(ez7Z } dJ%wVY0z= LY\ddI*s ,u?wYW; public synchronized int write(byte[] b,int nStart,int nLen) (<]\,pP0_ { ;1*m}uNz int n = -1; TdNuD V try{ -!'Oy%a# oSavedFile.write(b,nStart,nLen); 1EC -e|M. n = nLen; bxd3
} #L@} .Giz catch(IOException e) )Y&MIJ7>@ { jy\W_CT e.printStackTrace (); RsqRR`|X? } cW81 iXUWIgr *<`7|BH 3 return n; Z-^uM`],G } iX8h2l G*P[z'K= N`,7 FI} } 936Ff*%(l _L&n&y1+% V]l&{hl, /* Gt^|+[gD **SiteInfoBean.java s
jL*I */ :Az8K ) package NetFox; 8 *4@-3Sx MuDFdbtR }Kvh`@CiJ public class SiteInfoBean { l 8O"w& o/tVcv .+{nA}Bc private String sSiteURL; //Site's URL l?3vNa FeR private String sFilePath; //Saved File's Path %/{IssCR7 private String sFileName; //Saved File's Name Y5nz?a private int nSplitter; //Count of Splited Downloading File R'*<A3^ =]=B}L` j4E H2v public SiteInfoBean() 8ku?
W {//nSplitter的缺省值为5 I#i?** //default value of nSplitter is 5 GwgFi@itN this("","","",5); 9b?i
G } .yZK.[x4 o `b`*Z Iv'RLM public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ;): 8yBMk { $a`J(I sSiteURL= sURL; PYdIP\<V sFilePath = sPath; xCR;
K]! sFileName = sName; Kg4QT/0VA this.nSplitter = nSpiltter; "V: }*?yHJ3 @''&nRC1 } Jb(DJ-& JzHqNUn*M Bs_S.JP<` public String getSSiteURL() ;l$9gD>R { ~RcNZ\2y return sSiteURL; u8|@|t } 3Z_t%J5QZ$ CT|z[^ L30>|g public void setSSiteURL(String value) 0('OyH) { q_-ma_F#s sSiteURL = value; +T-@5v[ } 0Xp
nbB~~I qpoquWZ x:p}w[WM public String getSFilePath() D0f*eSXE{ { XFtOmY return sFilePath; #]@9qPyn } Nfr:`$k UMT\Q6p ' Q\ @19 public void setSFilePath(String value) I"B8_ { A_@I_V$ sFilePath = value; h5x*NM1Ih } R|-6o)$ {z=j_;<] P= e4lF. public String getSFileName() ]Qd{ '}+ { b9`i Z return sFileName; ]+mjOks~ } F{;;
: Bw6 L;Vu Hc M~ public void setSFileName(String value) kQy&I3 { f?Z|>3.2 sFileName = value; `{DG;J03[ } uWh|C9Y!A $.wA?`1aSk u %'y_C3 public int getNSplitter() {H+?z<BF< { m#*h{U$ return nSplitter; wEE2a56L- } i =-8@ NIaF 5z =rEA:Q`~w public void setNSplitter(int nCount) 7RD$=?o O' { 3^XVQS*** nSplitter = nCount; "NKf0F } $6#
lTYN~ } yQ'eu;+] %MbyKz:X zi
}(^~Fe /* R5~gH6K| **Utility.java wYjQV?, */ +1/b^Ac package NetFox; tfA}`*$s {\EOo-&A p0Gk j- public class Utility { ck$M(^)l Ib6(Bp9.L srK53vKMHW public Utility() '#W_boN { \DS^i`o)rY )&,K94
tFiR!f) } [zQWyDu [x5mPjgw //线程睡眠 {]`p&@ public static void sleep(int nSecond)
#9\THfb { pv&^D,H, try{ csDQva\ Thread.sleep(nSecond); Xu6K%]i^ } bAiJn< catch(Exception e) nvt$F%+ { M|8
3HTJ e.printStackTrace (); +xp*]a } ! Mo`^t } Y@%`ZPJ G6Nb{m //日志 MMgx|" public static void log(String sMsg) DsGI/c { OKAkl System.err.println(sMsg); =EpJZt } =cn~BnowY Ri @`a X;VQEDMPU public static void log(int sMsg) |')-VhLLK { vq>l>as9O System.err.println(sMsg); h e&V# # } wa ky<w, } lhO2'#]i ehT%s+aUw *_"u)<J /* TzKK;(GX **TestMethod.java /g76Hw>H */ 7&+Ys package NetFox; p`P~i&_ p3yU:q#A EB,4PEe: public class TestMethod { &{z<kmc$6 cp%ii' <3Gqv9Y& public TestMethod() CT*,<l-D { ///xx/weblogic60b2_win.exe @;Y~frT try{ c!wtf,F SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 3n48 %5 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); .=<$S#x^Hb SiteFileFetch fileFetch = new SiteFileFetch(bean); CS@&^SEj fileFetch.start(); K5k?H } Oy_c catch(Exception e){e.printStackTrace ();} A'-_TFwW j *3}1L4P
>|*yh~ } _^\$"nw n:4uA`Vg d,9`<1{9 public static void main(String[] args) T3 pdx~66 { 926Tl new TestMethod(); JhX=l-? } !'0S0a8 } DtF}QvA 点击下载更多相关资料
|