-
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
|
/* 92M_Z1_w[ **SiteFileFetch.java )`}4rD^b */ ^']*UD; package NetFox; td|O #R import java.io.*; XO}v8nWV import java.net.*; w s7LDY&( w>&g' RNb" O{3 public class SiteFileFetch extends Thread { PRN%4G K(Ak+&[ /qweozW_+ SiteInfoBean siteInfoBean = null; //文件信息Bean ^'$P[ long[] nStartPos; //开始位置 |/;X-+f8 long[] nEndPos; //结束位置 "PC9[i FileSplitterFetch[] fileSplitterFetch; //子线程对象 k9iB-=X?4s long nFileLength; //文件长度 }Pj;9ivz boolean bFirst = true; //是否第一次取文件 &Tk@2<5= boolean bStop = false; //停止标志 o<7'(Pz File tmpFile; //文件下载的临时信息 d?4-"9Y DataOutputStream output; //输出到文件的输出流 Fy^MI*}BZ YBQ{/"v%| //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ?$%2\"wX~7 public SiteFileFetch(SiteInfoBean bean) throws IOException ~s>Ud<l%r { _+.
)8
siteInfoBean = bean; AmBLZ<f; //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); "K#zY~>L tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); =VF%Z[Gm if(tmpFile.exists ()) \(ju0qFqH { 9^^:Y3j bFirst = false; qfyuq] read_nPos(); 8Oo16LPD } ^q/_D%]C else N6!$V7oT { }RZN3U= nStartPos = new long[bean.getNSplitter()]; ;%PI nEndPos = new long[bean.getNSplitter()]; W_h!Puj_ } VHx:3G L*1yK* </|m^$v jU=n\o=? } aaFt=7(K $Zf]1?|xa $mF9os- public void run() f9La79v { /xkF9 //获得文件长度
@xN)mi //分割文件 $WG< //实例FileSplitterFetch :PQvt/-'(D //启动FileSplitterFetch线程 zl!Y(o!@ //等待子线程返回 ^-26K|{3 try{ /U@Y2$TOF if(bFirst) a<v!5\dq! { Wh1'?# nFileLength = getFileSize();
iKEHwm if(nFileLength == -1)
U].3vju`c { oPR?Ar System.err.println("File Length is not known!"); SJ8|~,vL } Oi\,clR^[o else if(nFileLength == -2) G*rlU { 1g_Dkv|D System.err.println("File is not access!"); y!jq!faqt } D'oy%
1Q} else ZGQz@H5 { L] !M1\ for(int i=0;i<nStartPos.length;i++) "$PX[: { @JpkG%eK nStartPos = (long)(i*(nFileLength/nStartPos.length)); E>k!d'+tb } *[b22a4H( for(int i=0;i<nEndPos.length-1;i++) .@3bz
{ 9AHxa nEndPos = nStartPos[i+1]; Ae>:i7.V } x^/453Lk nEndPos[nEndPos.length-1] = nFileLength; ?m dGMf) } 5ii:93Hlj } '*n2<y )jed@? 3Jw}MFFV //启动子线程 mI-9=6T_ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; n@y*~sG] for(int i=0;i<nStartPos.length;i++) }TwSSF|}3 { vs(x;zpJ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Hjc *WTu siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), cUc:^wvLS nStartPos,nEndPos,i); QZamf
lk Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .?*TU~S fileSplitterFetch.start();
s?_H<u } Z,5B(X j // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Jn)DZv8? siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 6G]hsgro // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", c^`(5}39v nEndPos = " + nFileLength); w4j,t // fileSplitterFetch[nPos.length-1].start(); NLF6O9 g\=e86 PR~9*#"v.. //等待子线程结束 {}N=pL8MS //int count = 0; n_@cjO //是否结束while循环 pEX|zee boolean breakWhile = false; ><"0GPxrx J|:Zs1.<d {Q
AV while(!bStop) SX@zDuM { Y@Ti2bI`v write_nPos(); _q3|Ddm2LN Utility.sleep(500); SB=%(]S breakWhile = true; *#Hw6N0# ;B6m;[M+ Pm!/#PtX for(int i=0;i<nStartPos.length;i++) p
_q]Rt { [?nM)4d if(!fileSplitterFetch.bDownOver) s[#ww
=T\ { =SLCG. breakWhile = false; hO0g3^ break; G~KYFNHr } S F&EVRv } Kzrt%DA if(breakWhile) )m.U"giG++ break; x$=""?dd pDM95.6 IJv+si:k //count++; gkL{]*9&% //if(count>4) 1cY,)Z%l # // siteStop(); <^fvTb &* } sH /08Z *W$bhC'w NAh^2X System.err.println("文件下载结束!"); ZCz#B2Sf8 } _Sn45h@" catch(Exception e){e.printStackTrace ();} &@/25Y2 } "*Gp@ ~dlpoT z 3N'Xk //获得文件长度 E% d3}@ public long getFileSize() pW1(1M)[%Z { L1YiXJ,T, int nFileLength = -1; x5 ?>y{6D try{ d.t$VRO URL url = new URL(siteInfoBean.getSSiteURL()); J3,m{%EtNM HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &~sirxR p httpConnection.setRequestProperty("User-Agent","NetFox"); 5;q{9wvqO 22FHD4 /L*JHNu"_ int responseCode=httpConnection.getResponseCode(); mk]8}+^. if(responseCode>=400) BSHtoD@e7 { [LDY;k~5+ processErrorCode(responseCode); !FHm.E_> return -2; //-2 represent access is error c!dc`R } 0*XCAnJ^_ D2MWrX nV3I6 String sHeader; a+PVi -&JQdrs j6DI$tV~ for(int i=1;;i++) QI*<MF,1 { 6gTc)rhRT //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); nD\H$5>5 //Utility.log(in.readLine()); ky=h7#wdv- sHeader=httpConnection.getHeaderFieldKey(i); vfloha p if(sHeader!=null) pgEDh^[MW { #9CLIYJAd if(sHeader.equals("Content-Length")) {W$K@vuV;? { (fcJp)D nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /[+%<5s break; y{Vh?Z<E } SmVL?wf } Q%n$IQr4gM else LZ<^b6Dxk break; 12HE= } <P.'r,"[ } (Fs{~4T catch(IOException e){e.printStackTrace ();} J+r:7NvZ catch(Exception e){e.printStackTrace ();} s"B+),Jod )%vnl~i! jj6yf.r6c Utility.log(nFileLength); ch]{=61 jH?!\F2)+ M$U Zn return nFileLength; OU'm0Jlk } ;bRyk# >p
9~' Nx=rw h //保存下载信息(文件指针位置) ]_43U` [# private void write_nPos() =Hx]K8N ) { f[wxt n'r try{ 52t6_!y+V output = new DataOutputStream(new FileOutputStream(tmpFile)); *cAI gO7 output.writeInt(nStartPos.length); aM YtWj for(int i=0;i<nStartPos.length;i++) /_</m?&.U& {
()e|BFL . // output.writeLong(nPos); #eIFRNRb) output.writeLong(fileSplitterFetch.nStartPos); bk:mk[ output.writeLong(fileSplitterFetch.nEndPos); KvXFzx|A } ip!-~HNwJ output.close(); +F+M[ef<ws } UX%J?;g catch(IOException e){e.printStackTrace ();} 45;ey }8 catch(Exception e){e.printStackTrace ();} %
Ou'+A } xQkvK=~$ a!B"WNb+ bXk(wXX //读取保存的下载信息(文件指针位置) Dvm[W),(k private void read_nPos() |dhKeg_ { :f~qt%%/ try{ }/2M?W0 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (9Q@I8}Iy int nCount = input.readInt(); *" +u^ nStartPos = new long[nCount]; ZQ{-6VCjl nEndPos = new long[nCount]; 1P?|.W_^1 for(int i=0;i<nStartPos.length;i++) Z}S7%m { J?C:@Q nStartPos = input.readLong(); u=t.1eS5 nEndPos = input.readLong(); S? #6{rx } ZlP+t> input.close(); MI)v@_1d } U=PTn(2 catch(IOException e){e.printStackTrace ();} ^@^K
<SVc catch(Exception e){e.printStackTrace ();} `T{'ufI4B } $4q$!jB5 G`RQl@W>)( ><I{R|bC private void processErrorCode(int nErrorCode) "3/&<0k { wKKQAM6P1 System.err.println("Error Code : " + nErrorCode); P1ak>T*#2 } B>g(i=E
wSi$.C2 y/+IPR //停止文件下载 qP]1}- public void siteStop() Z)md]Twt { \/ipYc bStop = true; }$i/4?dYsQ for(int i=0;i<nStartPos.length;i++)
9}5o> iR fileSplitterFetch.splitterStop(); VS >xvF 1!NrndJ I }=Ul8
< } .wB'"z8L } c(aykIVOo //负责部分文件的抓取 6V*,nocL_+ **FileSplitterFetch.java ,Oe:SZJ> */ {
&Vt]9 package NetFox; ~;#sj&~ 1)5$,+~lL tAsap}( import java.io.*; 8OiCldw:HN import java.net.*; S%aup(wu6 51Vqbtj^ "6
~5RCZ public class FileSplitterFetch extends Thread { -iKoQkHt _s*p$/V\ .><-XJ String sURL; //File URL S=\cF,Zs long nStartPos; //File Snippet Start Position D -d long nEndPos; //File Snippet End Position x#gZC1$Y int nThreadID; //Thread's ID fUr%@&~l^ boolean bDownOver = false; //Downing is over <@P. 'rE boolean bStop = false; //Stop identical LosRjvQ: FileAccessI fileAccessI = null; //File Access interface xkv%4H> XJ5@/BW '6;
{DX public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException [S1 b\f# { \*[DR R0 this.sURL = sURL; vn!5@""T this.nStartPos = nStart; hQ'W7EF this.nEndPos = nEnd; YmOj.Q& nThreadID = id; +abb[ fileAccessI = new FileAccessI(sName,nStartPos);//定位 $JUkwsc } .+kg1=s S`$%C=a. x-]:g&5T public void run() V0BT./ B\< { D|ra ;d while(nStartPos < nEndPos && !bStop) )K$YL='kX { ;dPaWS1D
U!NuiKaQ26 g9fYt& try{ U8J9 #+: URL url = new URL(sURL); D<|$ZuB4 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); XRO(p`OE- httpConnection.setRequestProperty("User-Agent","NetFox"); < Sgc6>) String sProperty = "bytes="+nStartPos+"-"; &>]U c%JK httpConnection.setRequestProperty("RANGE",sProperty); m2"wMt"*V Utility.log(sProperty); *V7mM? _QEw=*.< ;|0P\3 InputStream input = httpConnection.getInputStream(); {Wi*B( //logResponseHead(httpConnection); 7'"qW"< ptrwZ8' FvY=!U06 byte[] b = new byte[1024]; k1oJ<$Q int nRead; DP0@x+`k while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) = pn;b1= { ~M8|r!_ nStartPos += fileAccessI.write(b,0,nRead); zjh:jrv~ //if(nThreadID == 1) `a83bF35 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); E*`PD<:)H } ;i\N!T{> /(*Ucv2i}T Wy}^5]R0E Utility.log("Thread " + nThreadID + " is over!"); L9N}lH bDownOver = true; n}_}#(a //nPos = fileAccessI.write (b,0,nRead); 2Z%n
"z68 } -gm5Eqi catch(Exception e){e.printStackTrace ();} qdn_ZE } xT]t3'y|- } yo/;@}g}
g'b|[ q ^C1LQZ //打印回应的头信息 g e(,>xB public void logResponseHead(HttpURLConnection con) 1G7l+6w5~^ { Kei0>hBi for(int i=1;;i++) e5 L_<V^Jo { WG3!M/4r H String header=con.getHeaderFieldKey(i); \pfa\,rW if(header!=null) w;yzgj:n&f //responseHeaders.put(header,httpConnection.getHeaderField(header)); 3]GMQA{L) Utility.log(header+" : "+con.getHeaderField(header)); FR[I~unqD else vi
*A5 break; G{]RC^Zo } Jx~H4y=z } jLM([t l)*(UZ" |Q%P4S"B? public void splitterStop() l cHf\~ { ZnRT$ l O bStop = true;
*Z^`H!& } A&)2m }oA>0Nw$K ) WbWp4 } C1e@{> ]95VMyN `BK b60 /* ;cvMNU$fN **FileAccess.java | bRU=dg *//文件访问(定位,写) [K$5Rm5 package NetFox; $8rnf import java.io.*; IH dA2d?.] z4Zm% %jy$4qAf% public class FileAccessI implements Serializable{ ^h$*7u"^y ]t~.?)Ad+2 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 tiE|%jOzt RandomAccessFile oSavedFile; 5{k,/Z[L
long nPos; 'E9{qPLk( x<M::")5!V wpuK?fP public FileAccessI() throws IOException Qy0w'L/@ { 'mbLK#q this("",0); T>'O[=UWh } ,wes* #55:qc>m 4qp|g'uXT public FileAccessI(String sName,long nPos) throws IOException G(.G>8pf { Ba8=nGa4KY oSavedFile = new RandomAccessFile(sName,"rw"); oG1zPspL this.nPos = nPos; WM?-BIlT= oSavedFile.seek(nPos); W/bW=.d
Jd } -
[h[ F0p=|W X':FFD4h public synchronized int write(byte[] b,int nStart,int nLen) Ajm!;LA[jO { }LS8q int n = -1; 4h@,hY1# try{ }n4 T!N oSavedFile.write(b,nStart,nLen); lbda/Zx n = nLen; UjQz } M%`CzCL
u catch(IOException e) /HLI9 { sFz0:SqhE e.printStackTrace (); 3?a`@C&x } Zh;wQCDj wDh]vH[ 0>Snps3*Z return n; .)b<cH~% } (cOe*>L; |Q3d7y &L$9Ii } ZI!: 1*u]v{JJ( 7Dbm
s(:( /* ]|tg`*l!> **SiteInfoBean.java Cjr]l! */ }x`Cnn package NetFox; @@H_3!B%4v B4RrUA32 P M [_0b public class SiteInfoBean { ?h&XIM( \)No?fB H%@f ^ private String sSiteURL; //Site's URL XqmB%g( private String sFilePath; //Saved File's Path !vAmjjB private String sFileName; //Saved File's Name /S"jO[n9b private int nSplitter; //Count of Splited Downloading File bPxL+
+ %US&`BT! ;yomaAr public SiteInfoBean() )~wKRyQff {//nSplitter的缺省值为5 S4_/%~? //default value of nSplitter is 5 Pj
<U|\-? this("","","",5); d j\Z}[ } c EYHB1*cT Gn8sB _GG\SWm public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) AhN3~/u%7 { V'j+)!w5 sSiteURL= sURL; xKSQz sFilePath = sPath; %m
|I=P sFileName = sName; +_7a/3kh this.nSplitter = nSpiltter; f"FFgQMkv ad: qOm .g*N+T6O } jXE:aWQht B>L7UQ6_[ gUru=p public String getSSiteURL() "5V;~}=S { 60!%^O = return sSiteURL; jG[Vp b } 6/8K2_UeoW (NvjX})eh PK2;Ywk` public void setSSiteURL(String value) 6h>#;M { ;bB#Pg sSiteURL = value; }CBQdH&g; } '|SO7}`;Q :Ph>\ aG "V>}-G& public String getSFilePath() %i9 e<.Ot { |MZ1j(_ return sFilePath; T ?[28| } QgqJ # 8D )nM| C>+n>bH]L public void setSFilePath(String value) ,~d0R4) { jjV'`Vy) sFilePath = value; \s*M5oN]] } d. vNiq,` e3;& G*9>TavE public String getSFileName() }#ZRi}f2VJ { ]#]Z]9w return sFileName; &|k=mxox\ } $os]$5( ;Sivu-% %1Q:{m public void setSFileName(String value) 0A)0Zw { V8M()7uJ sFileName = value; Gw<D'b)! } !l
$d^y345 w{W+WJ P5<9;PPbZ public int getNSplitter() A O:F*%Q u { L\2"1%8Wj return nSplitter; H[~ D]RG}' } "#O9ij d&NnpjH}c MQ!4"E5"j public void setNSplitter(int nCount) epiviCYC { B"&-) ( nSplitter = nCount; :8)Jnh\5 } K<J,n!zc } #BLHHK/[ i=Qy?aU? J 4gtm"2) /* uy
hh"[ **Utility.java U4!KO;Jc */ xfb .Z( package NetFox; >.Gmu uBRlvNJ _c>ww<*3 public class Utility { B r#{ k77IXT_7u 0/su` public Utility() yI:
;+K { ' 4FH9J sGu.G xT+_JT65 } iM<$
n2t B5z'Tq1 //线程睡眠 ?sk>Mzr public static void sleep(int nSecond) f`hZb { "A}sD7xy9 try{ 6'^E
],:b Thread.sleep(nSecond); ;TJpD0 } n*7^lAa2 catch(Exception e) +c~&o83[ { ]:gW+6w"C e.printStackTrace (); Ok_}d&A } 9w=7A>.U } +7gd1^|$e KmNnW1T //日志 |HmY`w6*z public static void log(String sMsg) PMytk`<`zw { cHvm System.err.println(sMsg); JUr
t%2 } c7XBZ%D &+#5gii1i Yg8*)u0 public static void log(int sMsg) -P;0<j@6k5 { , MXU]{ System.err.println(sMsg); 'SXHq>#gA } o.ZR5 `. } !_W/p`Tc s/7Z.\ =%m{|HQ` /* J#$U<`j*G **TestMethod.java ^bv^&V&IB */ q-`&C package NetFox; SZKYq8ZA)V ~,}|~ M(a%Qk?]/ public class TestMethod { Vc9rc} %V>%AP e-rlk5k%f public TestMethod() MZV$YD^S { ///xx/weblogic60b2_win.exe x4*
bhiu try{ +.!D>U$)} SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); a$=~1@ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); @s1T|}AJ SiteFileFetch fileFetch = new SiteFileFetch(bean); 6M
>@DRZ'| fileFetch.start(); |6Q5bV } 8* A%k1+ catch(Exception e){e.printStackTrace ();} v@=qVwX @-sWXz*W ,>-j Ztm } !h.hJt HV~Fe!J_ 9O 'j+?(`@ public static void main(String[] args) ;eYG\uKC{ { iN&oSpQ new TestMethod(); vaB ql(?'2 } 4
.
7X*1 } F@?-^ E@ 点击下载更多相关资料
|