-
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
|
/* pW 2NrBq@w **SiteFileFetch.java LkK%DY */ 5N@k9x package NetFox; gp`$/ci import java.io.*; +? E~F import java.net.*; F w)#[ |a*VoMZ 8iGS=M public class SiteFileFetch extends Thread { &5h{XSv >7V96jL$Y iP]KV.e'/C SiteInfoBean siteInfoBean = null; //文件信息Bean ?\"GT] 5D long[] nStartPos; //开始位置 ; :4&nJ*qG long[] nEndPos; //结束位置 l=GcgxD+"d FileSplitterFetch[] fileSplitterFetch; //子线程对象 3CL/9C> long nFileLength; //文件长度 ?#YheML? boolean bFirst = true; //是否第一次取文件 ]w`)"{j5m boolean bStop = false; //停止标志 Tty_P, File tmpFile; //文件下载的临时信息 WXV (R,*Tc DataOutputStream output; //输出到文件的输出流 aMe]6cWHV> LmWZ43Z"@ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) &kUEnwQ- public SiteFileFetch(SiteInfoBean bean) throws IOException }Go?j#
! { 6Ri+DPf: siteInfoBean = bean; H=RzY-\a% //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &&T\PspM tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); JZI)jIh if(tmpFile.exists ()) }Z#KPI8\Q { &W+lwEu bFirst = false; M(8dKj1+ read_nPos(); d9e_slx } -@L7!,j else nsn { DcYL8u nStartPos = new long[bean.getNSplitter()]; J_NY:B nEndPos = new long[bean.getNSplitter()]; \kWL:uU } -LzkM" A0X'|4I 2 tD{c^
9< Iue}AGxu:{ } ,2oF t\`.r -[/tS<U 3E9 )~$ public void run() QiH>!Ssw { " GRR,7A //获得文件长度 [l44,!Z& //分割文件 =jv3O.z q //实例FileSplitterFetch |BGB60}]f //启动FileSplitterFetch线程 &s6;2G&L$ //等待子线程返回 `vjn,2S} try{ _D+pJ{@W if(bFirst) TrCut2 { $, hHR: nFileLength = getFileSize(); d*$L$1S if(nFileLength == -1) 5 EhOvt8 { mrmm@? System.err.println("File Length is not known!"); JuW"4R } RN^<bt{_U else if(nFileLength == -2) #`]`gNB0Yg { j]HzI{7y System.err.println("File is not access!"); =/5^/vwgY } [#@\A]LO else hGU
m7 { b~$8<\ for(int i=0;i<nStartPos.length;i++) >}T}^F { kB`
@M>[ nStartPos = (long)(i*(nFileLength/nStartPos.length)); h;Hg/jv } ($nQmr;t for(int i=0;i<nEndPos.length-1;i++) !;3hN$5 { Mz7qC3Z nEndPos = nStartPos[i+1]; o5B]? ekpq } >:Y"DX- nEndPos[nEndPos.length-1] = nFileLength; !zVjbYWY } vh"wXu } HPMj+xH uG7?:) pxv d\ I6Wn //启动子线程 _u3%16,o fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &w!(.uDO for(int i=0;i<nStartPos.length;i++) r2%Qk { Tw,|ZA4XH fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bMq)[8,N siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), /IQ$[WR cx nStartPos,nEndPos,i); K
0e*K=UM Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); L35]'Jua fileSplitterFetch.start(); s6F0&L;N& } w=_q<1a // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), H Y~[/H+: siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1B#iJZ} // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", gy1R.SN nEndPos = " + nFileLength); (gRTSd T? // fileSplitterFetch[nPos.length-1].start(); }<qZXb1 *ESi~7;# <a&w$Zc/ //等待子线程结束 tmd{Gx}c //int count = 0; "!Qi$ ] //是否结束while循环 `>4"i+NFF8 boolean breakWhile = false; W|Cs{rBc? pocXQEg$] :HM~!7e while(!bStop) Q#F9&{'l { d]USk&8 write_nPos(); /PVx Utility.sleep(500); bE,#, breakWhile = true; P~#LbUP( ZkWMo=vL #_Zkke~{ for(int i=0;i<nStartPos.length;i++) JXV#V7 { 4p7j"d5 if(!fileSplitterFetch.bDownOver) )(OGo`4Qz { O1@3V/.Wu breakWhile = false; O=eU38n:5u break; j u&v4] } d}aMdIF!e } {Hie%2V if(breakWhile) /2''EF'; break; !UR3`Xk nq,:UYNJ w`EC6ZN //count++; <isU D6TC //if(count>4) 0nvT}[\H* // siteStop(); .+mP#<mAg } \T[OF8yhW ex#-,;T )gz]F_ System.err.println("文件下载结束!"); 7xM4=\~OG } ]*U+nG catch(Exception e){e.printStackTrace ();} uGn BlR$} } nXk9
IG( ~$ Po3]{s q6hH]Q>w* //获得文件长度 tS Y4' public long getFileSize() 2s=zT5 { uP$i2Cy int nFileLength = -1; #S]O|$&* try{ zJh!Q** URL url = new URL(siteInfoBean.getSSiteURL()); m^zD'] HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -]-0]*oAp httpConnection.setRequestProperty("User-Agent","NetFox"); @=}NMoNH =jA.INin4 W4qnXD1n int responseCode=httpConnection.getResponseCode(); <pXOE-G5 if(responseCode>=400) _+)n}Se { -7XaS&.4 processErrorCode(responseCode); z8r?C return -2; //-2 represent access is error i!fk'Yt% } <(~Wg{ >l=jJTJ;q S|;}]6p String sHeader; GY5JPl \II^&xSF +3M1^: for(int i=1;;i++) Y]
UoV_ { $C,`^n' //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); /cVZ/" //Utility.log(in.readLine()); ?=1i:h sHeader=httpConnection.getHeaderFieldKey(i); zo8&(XS if(sHeader!=null) ~]Av$S { fGW~xul_ if(sHeader.equals("Content-Length")) 3g56[;Up? { ,&s"f4Mft nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); D(&Zq7]n break; C!nbl+75 } Z#l6BXK } >)Bv>HM else 4N1)+W8k* break; $VP\Ac,! } l)~$/#k } >]A#_p catch(IOException e){e.printStackTrace ();} 3[?;s}61 catch(Exception e){e.printStackTrace ();} EY.m,@{ ,1.Td=lY$ ~ 588md : Utility.log(nFileLength); sHV?njZd K@oyvJ$ !aJ6Uf%R return nFileLength; biForT_no } t0?tXe.B meXwmO kY9$ M8b //保存下载信息(文件指针位置) '#oH1$W] private void write_nPos() KdzV^6K<c { ?5^DQ|Hg ^ try{
9l |*E output = new DataOutputStream(new FileOutputStream(tmpFile)); U'~]^F%eyu output.writeInt(nStartPos.length); 16nU`TN for(int i=0;i<nStartPos.length;i++) J/,m'wH { E8t{[N6d // output.writeLong(nPos); tO D}& output.writeLong(fileSplitterFetch.nStartPos); @ Jb-[W$* output.writeLong(fileSplitterFetch.nEndPos); AM#s2.@ } M"msLz output.close(); OB^j
b8 } MX+gc$Y
O catch(IOException e){e.printStackTrace ();} [M:<!QXw catch(Exception e){e.printStackTrace ();} $:UD #eh0? } Y:Jgr&*,z +1\t0P24 QF22_D<.}J //读取保存的下载信息(文件指针位置) 2^Z"4t4 private void read_nPos() t1$pl6&, { zyt >(A1 try{ tWQ$`<h DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 92N `Q} int nCount = input.readInt(); LY#V)f nStartPos = new long[nCount]; v0bP|h[t nEndPos = new long[nCount]; M6V^ur 1 for(int i=0;i<nStartPos.length;i++) 64<*\z_ { znIS2{p/` nStartPos = input.readLong(); [o7Qr?RN nEndPos = input.readLong(); g@>93j=cZU } T&:~= input.close(); ZXIz.GFy+ } THgEHR0,}[ catch(IOException e){e.printStackTrace ();} ~~m(CJ4S catch(Exception e){e.printStackTrace ();} I SdB5Va } 0< }BSv Q~rE+?n9F ]mC5Z6,1s private void processErrorCode(int nErrorCode) k\g:uIsv$ { >LPIvmT4D? System.err.println("Error Code : " + nErrorCode); 9ESV[ } 4AF.KX7 OsRizcgdA b d C //停止文件下载 F%O+w;J4 public void siteStop() Q|U
[|U { .*J /F$ bStop = true; 9g.5: for(int i=0;i<nStartPos.length;i++) _?eT[!oO8 fileSplitterFetch.splitterStop(); r8[)C cv
NfmHa [h8macx } mMO]l(a& } H6/gRv@ //负责部分文件的抓取 \Xr*1DI< **FileSplitterFetch.java WSGho(\ */ .Sv/0&O package NetFox; 7")~JBH +wI<w|! 8PWEQ<ev7> import java.io.*; bU/YU0ZIT import java.net.*; b"B:DDw00 I<+:Ho=6 BKgCuz:y public class FileSplitterFetch extends Thread { vTIRydg2b x+DecO2 cIP%t pTW. String sURL; //File URL H?V
b long nStartPos; //File Snippet Start Position ;<nJBZB9u
long nEndPos; //File Snippet End Position tZu1jBO_Q4 int nThreadID; //Thread's ID GR_caP boolean bDownOver = false; //Downing is over %joU}G;" boolean bStop = false; //Stop identical 8xkLfN|N=
FileAccessI fileAccessI = null; //File Access interface JY~CMR5#.O )CgH|z:=b D'BGoVP public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Iv*u#]{t { yM,Y8^ this.sURL = sURL; 8# x7q>? this.nStartPos = nStart; b/
h#{' this.nEndPos = nEnd; !/=.~B nThreadID = id; r\)bN4-g fileAccessI = new FileAccessI(sName,nStartPos);//定位 l kyK } Z#YNL-x tg\o"QKW9 0Q)YZ2 public void run() b`F]oQ_* { DKkilqVM while(nStartPos < nEndPos && !bStop) z\woTL6D] { \1QY=} yT~x7, ? nq%'<^^ try{ c5:X$k\ URL url = new URL(sURL); (L(n% HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |"+Ufw^ httpConnection.setRequestProperty("User-Agent","NetFox"); NFR>[L V String sProperty = "bytes="+nStartPos+"-"; h[Uo6` httpConnection.setRequestProperty("RANGE",sProperty); gYe6(l7m Utility.log(sProperty); yrd1J$ i4nFjz "M3;>"`G InputStream input = httpConnection.getInputStream(); IDL0!cF //logResponseHead(httpConnection); \f)GW$` h_SkX@"/- ),|z4~ byte[] b = new byte[1024]; K9y~
e int nRead; U3Z-1G~*r while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 0%4OmLBT { 0m"Ni:KEf nStartPos += fileAccessI.write(b,0,nRead); QHc([%oV //if(nThreadID == 1) *ZxurbX# // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); oR/_{#Mz" } _uXb>V*8 c*\;!dbP 1:>F{g Utility.log("Thread " + nThreadID + " is over!"); $L?KNXHAF! bDownOver = true; 0/9]TIc //nPos = fileAccessI.write (b,0,nRead); S>S7\b' } 3!vzkBr catch(Exception e){e.printStackTrace ();} ]vP}K } xu%eg] } N_Kdi%q z^z`{B 8ZLHN', //打印回应的头信息 c&FOt public void logResponseHead(HttpURLConnection con) 0U H] { j<k6z for(int i=1;;i++) #V%98|" { x~wS/y
String header=con.getHeaderFieldKey(i); /
*PHX@ if(header!=null) 6bLn8UT //responseHeaders.put(header,httpConnection.getHeaderField(header)); %OHZOs Utility.log(header+" : "+con.getHeaderField(header)); _53~D= else qb/}&J7+ break; ,&qC
R
sw } 4+s6cQ]S` } [.1MElM [/%N2mj x5mg<y2`Ng public void splitterStop() )>S,#_e*b { ]bY]YNt{7] bStop = true; @NqwJ.%g } GNe^~ 2vX $:4 d]"4aS } I
"~.p=' VqpC@C$ ~~ rR< re /* y& 1@d+Lf **FileAccess.java {svo!pN: *//文件访问(定位,写) =R|XFZ, package NetFox; s&(; import java.io.*; ,3y9yJQa*# 7-!n- mpMAhm: public class FileAccessI implements Serializable{ Zrr)<'!i z+yIP ?s}( //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 wz*iwd- RandomAccessFile oSavedFile; d6YXITL)\> long nPos; 4]ni-u0* ,7]hjf_h qul#)HI public FileAccessI() throws IOException x9 %=d { UI+6\ 3 this("",0); /uj^w&l# } (^m]
7l c{BAQZVc f7lj,GAZ public FileAccessI(String sName,long nPos) throws IOException AcPLJ!y { MQ-u9=ys oSavedFile = new RandomAccessFile(sName,"rw"); :~vodh this.nPos = nPos; :Kwu{<rJ!( oSavedFile.seek(nPos); ehr-o7]( } +*]$PVAFA |'nQvn:{ Og/aTR<;= public synchronized int write(byte[] b,int nStart,int nLen) bOFzq>k_ { ` 3qf}=Z` int n = -1; ^{4BcM7eH try{ &>,;ye>A oSavedFile.write(b,nStart,nLen); Q'/sP 5Pj n = nLen;
X8$Mzeq } *9^8NY] catch(IOException e) h*k V@Dc { %8FfP5# e.printStackTrace (); wtY)(ka } 4]h/t&ppq Z8#nu ?e$&=FC0; return n; c>_ti+ } GfE>?mG -e/}DGL rexv)!J } FvpU] 9\_AB.Z: .N X9Ab /* h;gc5"mG **SiteInfoBean.java ,|:.0g[n */ WigtTAh4 package NetFox; dLiiJ6pl* j=l2\W#} djdTh
+>28 public class SiteInfoBean { Qr$'Q7 u}@N
Qeg &B{zS K$N private String sSiteURL; //Site's URL 1=R$ RI private String sFilePath; //Saved File's Path NN*L3yx private String sFileName; //Saved File's Name nR{<xD^ private int nSplitter; //Count of Splited Downloading File 8;@y\0 4&mY-N7A z9aR/:W} public SiteInfoBean() XV]N}~h o` {//nSplitter的缺省值为5 |OH*c3~r //default value of nSplitter is 5 Nk7y2[ this("","","",5); $6rm;UH } |?T=4~b
Ei!Z]jeK ^4n#''wJ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 0/R;g~q@ { N%dY.Fk sSiteURL= sURL; FRQ.ix2 sFilePath = sPath; yB UQ!4e sFileName = sName; TKB8%/_p this.nSplitter = nSpiltter; 1Wpu IuXgxR%
d$$5&a } jIs>> 2;v:Z^& 32ki ?\P public String getSSiteURL() \s)MNs { eFiG:LS7 return sSiteURL; 6>]_H(z7 } cGlN*GJ*H ;M~,S^U w%]) public void setSSiteURL(String value) $s7U
|F,I { syX?O'xJ sSiteURL = value; 8_%GH}{ } o/{`\4 q;eb ED` 1)1< public String getSFilePath() T?1BcY
{ r&LZH.$oh return sFilePath; :!aLa}`@ } v`|]57?A +xYu@r%R ?}?"m:= public void setSFilePath(String value) 5;)^o3X> { '4'Z
sFilePath = value; ]+I9{%zB%8 } 1V2]@VQF };'@'
ai<qK3!O public String getSFileName() 9Q9{>d#" { X_78;T)uA return sFileName; yY#h1 } #L.,aTA< :?xH)J,imk _mm(W=KiL public void setSFileName(String value) y(|#!m?@ { KYiJXE[Q- sFileName = value; yr%[IX]R } ZxtO.U2 fqI67E$59 Z1fY' f public int getNSplitter() ]wid;< { O:0{vu9AQ return nSplitter; ZUS-4'"$ } sK#)k\w> Z
)c\B l,o'J%<% public void setNSplitter(int nCount) }# s{." { Mxl;Im]!`. nSplitter = nCount; /l<(i+0 } 6xDk3 } +2iD9X{$MX ^iONC&r LzL)qdL /* u[**,.Ecg **Utility.java 5Y+YN1 */ /phMrL= package NetFox; :E-$:\V0}k "mQp#d/' "s|P,*Xf public class Utility { O7 ;=g!j azZtuDfv L(|K{vH h] public Utility() ''auu4vF { VzXVy)d iZG-ca !L.R"8! } +q
pW"0[ q0}u%Yz //线程睡眠 _&]7 public static void sleep(int nSecond) n#6{K6}k~ { ;+DEU0|pe try{ zg ,=A? Thread.sleep(nSecond); ))AxU!*. } +.~K=.O) catch(Exception e) x\'3UKQP+^ { AZ(zM.y!#_ e.printStackTrace (); S*<J y(:n } e.vt"eRB } LF7 }gQs
^ [y8(v ~H //日志 m}z6Bbis 0 public static void log(String sMsg) "_&ZRcd* { $9?:P}$v System.err.println(sMsg); "m {i`<, } /wEl\Kx (eF[nfM }Hb0@
b_ public static void log(int sMsg) 9C)VW { <n,QSy# System.err.println(sMsg); ng/h6
S } 5Xr})%L } __eB 7]#E |yz[mP*;o @&G}'6vF! /* w)|9iL8 **TestMethod.java <cOjtq,0 */ 8Ygf@*9L4 package NetFox; ^1~lnD~0 K&&T:'=/ %~:\f#6 public class TestMethod { R +@|#! \ n2MP M@KQOAzt public TestMethod() ~D@ YLW1z( { ///xx/weblogic60b2_win.exe ,y'6vW`%g9 try{ wlP3 XF? SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); L~f~XgQ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); C$0u-Nx8 SiteFileFetch fileFetch = new SiteFileFetch(bean); ,vLQx\m{ fileFetch.start(); ujnT B*Cqc } A{4,ih"5 catch(Exception e){e.printStackTrace ();} 4
. c1 5 eL
b/,R $1 B?@~& } UF^[?M = q)9n%- YgP V|@bITJ?7 public static void main(String[] args) *lA+-gkK* { \]4EAKJE new TestMethod(); Csy$1;"A } ,mx\
-lWFy } q6rkp f,Tl 点击下载更多相关资料
|