-
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
|
/* LaL.C^K **SiteFileFetch.java 7=yC*]BH-= */ ?4%'6R package NetFox; [t@ import java.io.*; f\O)+Vc import java.net.*; \ .HX7v H\7#$ HB 5y07@x public class SiteFileFetch extends Thread { B. Rc s R/8>^6 23XSQHVx SiteInfoBean siteInfoBean = null; //文件信息Bean <Z%iP{ long[] nStartPos; //开始位置 'f0*~Wq| long[] nEndPos; //结束位置 }HB)%C50. FileSplitterFetch[] fileSplitterFetch; //子线程对象 "YbvI@pD long nFileLength; //文件长度 smEKQHB boolean bFirst = true; //是否第一次取文件 ^E_`M:~ boolean bStop = false; //停止标志 EU?)AxH^ File tmpFile; //文件下载的临时信息 ?n o.hf DataOutputStream output; //输出到文件的输出流 b#%s! q{/>hvl //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) iHy=92/Ww public SiteFileFetch(SiteInfoBean bean) throws IOException n_5m+
1N { =fmM=@!$< siteInfoBean = bean; l$KC\$?%* //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 49b#$Xq tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); a f[<[2pma if(tmpFile.exists ()) :G$f)NMK { kL;sA'I:S bFirst = false; # Vz9j read_nPos(); rjzRZ } GKf,1kns else RR h0G>* { WE""be8 nStartPos = new long[bean.getNSplitter()]; Xq`|'6]/ nEndPos = new long[bean.getNSplitter()]; 7FL!([S5i } u,i~,M ud]O'@G< FHpS ?htRy j:'sbU } g.-{=kZ
QixEMX4< _@I<H\^ public void run() F9rxm { ssbvuTr //获得文件长度 LGx]z.30B //分割文件 _:oB#-0
//实例FileSplitterFetch hKP7p //启动FileSplitterFetch线程 8[ //等待子线程返回 7UQFAt_r try{ YCvIB' if(bFirst) $$7Mq*a> { p!5oz2RK nFileLength = getFileSize(); 1eue.iuQ if(nFileLength == -1) ' b41#/- { 9W3zcL8 System.err.println("File Length is not known!"); wc7gOrPpm } 7J@iJW],, else if(nFileLength == -2) g?,\bmH E { 7b7~D +b System.err.println("File is not access!"); _t[RHrs } >Micc else ]A oRK=aH { 3!_X FV for(int i=0;i<nStartPos.length;i++) aewVq@ngq! { 0k"n;:KM8 nStartPos = (long)(i*(nFileLength/nStartPos.length)); ?@"F\Bv<h } yPG,+uQ$. for(int i=0;i<nEndPos.length-1;i++) wZ7Opm<nt { _U}pdzX? nEndPos = nStartPos[i+1]; A$gP: 1&m } Rlc$2y@pU nEndPos[nEndPos.length-1] = nFileLength; 6Y4sv5G } $10"lM[ } /VFh3n>I2 o^P/ -&T ZmSe>}B= //启动子线程 G9'Wo.$ t fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;T1OXuQ for(int i=0;i<nStartPos.length;i++) X|!VtO { $ M?VJ\8 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *o<zo
` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), wlc Cz nStartPos,nEndPos,i); gA0:qEL\ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); w|$i<OIi) fileSplitterFetch.start(); i("ok } f'
|JLhs // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), TEQs\d siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); lYz{#UX} // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", m2wGg/F5 nEndPos = " + nFileLength); _P6e%O8C# // fileSplitterFetch[nPos.length-1].start(); l/?Jp+] %JUD54bBt 5>z`==N) //等待子线程结束 8nzDLFxp_ //int count = 0; m-V_J`9" //是否结束while循环 >bQ'*! boolean breakWhile = false; a,<l_#' J1P
jMb} /)6+I(H while(!bStop) quXL'g { VX+:k.} write_nPos(); f(}?Sp_ Utility.sleep(500); NDsF<2A4 breakWhile = true; X2CpA;#;7l ~mAv)JK vjNP for(int i=0;i<nStartPos.length;i++) jz
CA2N% { 4%k{vo5i if(!fileSplitterFetch.bDownOver) }N@8zB~X { AlZ]UGf^ breakWhile = false; fpd4 v|( break; a=m4)tjk } ?T.'
q } %x(||cq if(breakWhile) Tj0qq . break; ~kHWh8\b: 0?@;zTE0 bH6i1c8 //count++; 4KSZ;fV6/ //if(count>4) ;UU`kk // siteStop(); ck0K^o v } FU]jI[ p./9^S
B=vBJC) System.err.println("文件下载结束!"); V)|]w[(Y } HLYog+? catch(Exception e){e.printStackTrace ();} .7GTL } .J?cV;:` o03Y w)* P_(QG
6 //获得文件长度 },r9f MJ public long getFileSize() _x+)Tv { CEQs}bz int nFileLength = -1; JU>F&g/| try{ 'YFy6rds URL url = new URL(siteInfoBean.getSSiteURL()); +!"GYPUXy HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 0oT~6BGm httpConnection.setRequestProperty("User-Agent","NetFox"); <c;U 0! m [2*?b/q3J _+B{n^ { int responseCode=httpConnection.getResponseCode(); ?$v*_*:2h if(responseCode>=400) E@.daUoB { 9E`Laf processErrorCode(responseCode); O0`o0!=P return -2; //-2 represent access is error <m"fzT<" } zDD H6o_*Y }BFX7X String sHeader; 7+'&(^c zCz"[9k HpCTQ\H for(int i=1;;i++) 2!kb? { h^ o@=%b //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5rX_85 ] //Utility.log(in.readLine()); l&JV.}qGB8 sHeader=httpConnection.getHeaderFieldKey(i); 3ncL351k if(sHeader!=null) \+iZdZD { rS|nO_9 f if(sHeader.equals("Content-Length")) IuV7~w { NCX`-SLv nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Zb&5)&'X break; i>j(Ds v } \&XtPQ } c^F@9{I else jNbU{Z%r break; ^55q~DP}> } 9*Z!=Y#4, } vV
PK catch(IOException e){e.printStackTrace ();} 8T523VI catch(Exception e){e.printStackTrace ();} Q8h0:Q q1Sr#h| dy"7Wl]hi7 Utility.log(nFileLength); 9EFQo^
E O\X=vh/D qu`F,OG return nFileLength; r]3v.GZy } MkK6.qV\z
r-e-2y7 K^m`3N" //保存下载信息(文件指针位置) M&SY2\\TB private void write_nPos() 2Q;g|*] { KFhnv`a.0 try{ j=kz^o~mH output = new DataOutputStream(new FileOutputStream(tmpFile)); ZCAg)/ output.writeInt(nStartPos.length); ./qbWr`L for(int i=0;i<nStartPos.length;i++) 7X{@$>+S { WupONrH1e // output.writeLong(nPos); $?*XPzZ output.writeLong(fileSplitterFetch.nStartPos); Q $^)z_jai output.writeLong(fileSplitterFetch.nEndPos); -n"7G%$M } w678 output.close(); ?{]"UnyVE* } Yc`PK =!l catch(IOException e){e.printStackTrace ();} $aC%&&+wG catch(Exception e){e.printStackTrace ();} {36QZV*P } BbG=vy8'l o>^@s4t 1$n!Lj=5 //读取保存的下载信息(文件指针位置)
M2Zk1Z private void read_nPos() ~P,@">} { n2N:rP try{ <Kk[^.7C; DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); D6fGr$(N% int nCount = input.readInt(); BJP^?FUd=, nStartPos = new long[nCount]; }$oZZKS nEndPos = new long[nCount]; \R.Fmeko for(int i=0;i<nStartPos.length;i++) ,<O|#`?"@G { CyKupJ.Fq nStartPos = input.readLong(); z{(c-7* nEndPos = input.readLong(); M?v`C>j } wDt9Lf
O input.close(); 82P#C4c+d } $_+.D`vx` catch(IOException e){e.printStackTrace ();} g0k{b catch(Exception e){e.printStackTrace ();} rd ]dDG } lEC91:Jyt g{e@I;F ]L;X Aj? private void processErrorCode(int nErrorCode)
f)#nXTXeC { -~TgA*_5] System.err.println("Error Code : " + nErrorCode); |>v8yS5 } seS) `@n i:sb_U+M eMOnzW|h //停止文件下载 }kF*I@:g public void siteStop() mNQ*YCq. { ?{(Jy* bStop = true; =SK{|fBB for(int i=0;i<nStartPos.length;i++) *kq>Z 06'i fileSplitterFetch.splitterStop(); &\5%C\0Z< df8aM<&m3 vq8&IL } X8~gLdv8 } I,7n-G_' //负责部分文件的抓取 oLc **FileSplitterFetch.java u;/<uV3 */ KY9&Ky+2 B package NetFox; s-e<&*D[ VI;)VJbq EViDMp" import java.io.*; .]LP327u import java.net.*; wh#x`Nc MB"<^ZX /rzZU} 3[ public class FileSplitterFetch extends Thread { @YI-@ BE,H`G #h lQt* LWd[ String sURL; //File URL (R^Ca7F long nStartPos; //File Snippet Start Position A08{]E#v> long nEndPos; //File Snippet End Position L=)Arj@q int nThreadID; //Thread's ID X0BBJ( e boolean bDownOver = false; //Downing is over Vbp`Rm1? boolean bStop = false; //Stop identical [' cq FileAccessI fileAccessI = null; //File Access interface (k<__W c_t (T8dh| X@^"@ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException N6uKFQL:{ { 4L/8Hj#g this.sURL = sURL; (E<QA this.nStartPos = nStart; /u pDbP.O this.nEndPos = nEnd; h%!N!\ nThreadID = id; YnwP\Arfq fileAccessI = new FileAccessI(sName,nStartPos);//定位 r1AG1Y } `t Zw(Z=h }Oe9Zq !~a1xI~s public void run() ^<v]x;
3 { S1E=EVG while(nStartPos < nEndPos && !bStop) V"W)u#4, { *S\/l-D :'K%&e?7s $#HUxwx4 try{ Sj9NhtF]f URL url = new URL(sURL); Z)dE#A_X HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); hgI;^ia
httpConnection.setRequestProperty("User-Agent","NetFox"); |C3~Q{A String sProperty = "bytes="+nStartPos+"-"; {on+
;, httpConnection.setRequestProperty("RANGE",sProperty); Jsw%.< Utility.log(sProperty); Bw*6X`'Q /]hE?cmj 5 $:
q InputStream input = httpConnection.getInputStream(); YY9Ub //logResponseHead(httpConnection); ;eiqzdP )NCSO b Qhsk09K_=4 byte[] b = new byte[1024]; 6^vHFJ$ int nRead; U=>4=gsG while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Z*M-PaU} { sI#r3:?i nStartPos += fileAccessI.write(b,0,nRead); TptXH? //if(nThreadID == 1) ="AJ&BqHd // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <:Z-zQp)? } 93fClF|@ V8IEfU Q0-}!5`E1$ Utility.log("Thread " + nThreadID + " is over!"); $+Zj)V( bDownOver = true; N83g=[ //nPos = fileAccessI.write (b,0,nRead); JN<IMH } @DK;i_i catch(Exception e){e.printStackTrace ();} 0OPpA Ll } [XDr-5Dm } #`b5kqQm k5TPzm=y{ X7{ h/^ //打印回应的头信息 X)k+BJ public void logResponseHead(HttpURLConnection con) zx=AT { M`gr*p for(int i=1;;i++) 5Q.z#]Lg { <o.?T*Q9 String header=con.getHeaderFieldKey(i); O*y@4AR"S if(header!=null) dRPX`%J //responseHeaders.put(header,httpConnection.getHeaderField(header)); &~a/Upz0]_ Utility.log(header+" : "+con.getHeaderField(header)); 6/&aBE= else `6`oLu\l break; >2@ a\ } ;OY*`(Id } ;'xd8Jf X/-u$c Q2HULz{ public void splitterStop() U8s&5~IPn { bsgr g bStop = true; p@bcf5' } i0e aBG]I 0F|DD8tHR Q2 @Ugt$ } ? bnhx 4.}J'3 . z8\;XR /* Ss
c3uo 0 **FileAccess.java 2$%E:J+2:$ *//文件访问(定位,写) @N,I}_ 9- package NetFox; okv`v
({ import java.io.*; Fu6~8uDV{{ CxW-lU3G` nlaeo"] public class FileAccessI implements Serializable{ ECF \/12 Vs~!\<? //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 rP7~R RandomAccessFile oSavedFile; t_Rpeav long nPos; /pOK4" *>f-UNV KWB;*P
C^ public FileAccessI() throws IOException #I|jFn9 { b+3QqbJ[F this("",0); I]OVzM } E]26a,^L b+qdl`Vd A-XWG9nL public FileAccessI(String sName,long nPos) throws IOException t:<dirw,o { f*Dy>sw oSavedFile = new RandomAccessFile(sName,"rw"); [r"`rBw this.nPos = nPos; ~Q/G_^U: oSavedFile.seek(nPos); tW#=St0<.o } j/Rm~!q ZQQ0} f}U@e0Lsb public synchronized int write(byte[] b,int nStart,int nLen) % HK \ { {Y#$ int n = -1; rS/}!|uAu try{ 8>y!=+9_ oSavedFile.write(b,nStart,nLen); ?E88y n = nLen; _6,Tb] } 9X6l`bo' catch(IOException e) Jf|6 FQo& { eX9Hwq4X44 e.printStackTrace (); eaGd:( } 5$C]$o} M7 Z9(3Va [J71aH return n; |rg4j } }3&~YBx;: #0wH.\79 %Yi^{ZrM } pg;y\} 2|C(|fD4 "/MA.zEl0, /* v1Wz#oP **SiteInfoBean.java 16N+ */ WMw]W& package NetFox; 4`Z8EV |-SImxV -B l!s^-' public class SiteInfoBean { *U69rbYI vQiKpO* = g[Cs* private String sSiteURL; //Site's URL bEz1@"~
p private String sFilePath; //Saved File's Path Zg#VZg1
2 private String sFileName; //Saved File's Name h72#AN private int nSplitter; //Count of Splited Downloading File 78[5@U 0nbQKoF *>,CG:`D public SiteInfoBean() V<+=t{ {//nSplitter的缺省值为5 j~a"z4 0 //default value of nSplitter is 5 6YCFSvA#/ this("","","",5); [c=T)]E1 } n6f 5sc`L S`qa_yI)Ed public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) n,E=eNc { |VPJaiC~ sSiteURL= sURL; vS$_H<;P sFilePath = sPath; Mx<?c sFileName = sName; KS6H`Mm}/ this.nSplitter = nSpiltter; UD@u hL c+^#(OB _CDl9pP36# } 4tb y N q0l=S+0 aN/0'V|&ym public String getSSiteURL() }wh
sZ { =/b WS,= return sSiteURL; #r ;;d( } 10 D6fkjf GvCB3z 8 FqhSzw public void setSSiteURL(String value) 1sT%g}w@| { foOwJ }JU sSiteURL = value; x/pM.NZF1 } }bg_?o;X} =Bq3O58+ RrPo89o public String getSFilePath() +TQMA>@g< { !k= ~5)x return sFilePath; TL?(0]Hfe } 2unaK<1s m<DiYxK y
;$8C public void setSFilePath(String value) WjrUns { CfWtCA sFilePath = value; %bp8VR sY } 7K|:
7e( F {g^4 {4@+
2)l public String getSFileName() *nPB+@f { DD4fV`:kG return sFileName; [=
GVK }
>Mzk;TM }c"1;C&{ jv
C.T]<B public void setSFileName(String value) .=nx5yz { ![{>$Q?5
sFileName = value; ;B'5B]A3 } NX?IM8\t Y)-)owx7 .[1"3!T public int getNSplitter() ygvX}q { l^ @!,Z return nSplitter; Eep*,Cnt0 } eoC@b/F4 #ZPU.NNT? pnvHh0ck_ public void setNSplitter(int nCount) )<kId4E { ;-OnCLr nSplitter = nCount; VGVZ`| } [CBhipoc } QB Nnvg4v b~1]}9TJ }nQni? /* 0! :1o61 **Utility.java &7{/ x~S{ */ U8T"ABvFP package NetFox; b* QRd /%#LA =`b/ip5 public class Utility { 4rmSo^vK Gl1Qbd0 7.r}98V public Utility() Aj9Onz,Lg { : *~}\M* wO&edZ]zb^ T\G2B*fGd } ),<E-Ub `v1Xywg9P //线程睡眠 [F^qa/vJ10 public static void sleep(int nSecond) :`9hgd/9 { [BH^SvE try{
jWg7RuN Thread.sleep(nSecond); }SdI _sLe } AX Y.80+ catch(Exception e) T4O H,^J { =
}&@XRLJ e.printStackTrace (); ]y4(WG;: } 3c"$@W:> } g=*`6@_= N34.Bt //日志 #SHmAB public static void log(String sMsg) Xm|Uz`A; { f1a >C System.err.println(sMsg); 3H_mR
j9th } y;!q E~!3 \WDL?(G< aAlES< r public static void log(int sMsg) )wmG&"qsP { Lv`*+;1K System.err.println(sMsg); B]`!L/ } aw0; } &
*^FBJEa. b.`<T"y ;{n@hM*O /* eb])= **TestMethod.java .HM1c */ Y:~A-_ package NetFox; l1_Tr2A}7/ UN~dzA~V X>[x7t: public class TestMethod { ZfpV=DU r((2.,\Z B@:c8}2. public TestMethod() +0w~Skd, { ///xx/weblogic60b2_win.exe a?zn>tx try{ >q'xW=Y
j\ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); NZJ:@J=- //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); jm-J_o;}z6 SiteFileFetch fileFetch = new SiteFileFetch(bean); 2k
}:)]m fileFetch.start(); ^4+ew>BLSv } ;g3z?Uz) catch(Exception e){e.printStackTrace ();} d},IQ,Az:Z lZY0A#
AoaRlk-# } E&\dr;{7 >@NH Al uhyw?#f public static void main(String[] args) 0!D,74r { Quc,,#u new TestMethod(); yGNZw7^( } uCc.dluU } ;XJK*QDN 点击下载更多相关资料
|