-
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
|
/* Svs&?B\}{6 **SiteFileFetch.java 0\eSiXs */ Cq-99@&; package NetFox; Eok8+7g0& import java.io.*; z_8Bl2tl import java.net.*; =CL,+ Z$35`:x&h 0|4R8Dh*- public class SiteFileFetch extends Thread { j9cB<atL g1B P R80|q#h,] SiteInfoBean siteInfoBean = null; //文件信息Bean QqXaXx; long[] nStartPos; //开始位置 PC%_^BDW long[] nEndPos; //结束位置 B E#pHg FileSplitterFetch[] fileSplitterFetch; //子线程对象 ol_&epG;ST long nFileLength; //文件长度 3;!a'[W&p boolean bFirst = true; //是否第一次取文件 'OMl9}M boolean bStop = false; //停止标志 SO~pe$c- File tmpFile; //文件下载的临时信息 472'P DataOutputStream output; //输出到文件的输出流 RaC6RH D^{jXNDNO //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) U)z1RHP|z public SiteFileFetch(SiteInfoBean bean) throws IOException dO-Zj#%7z8 { dtXtZ!g2 siteInfoBean = bean; s GrI%3[e" //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (8em 5 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 9AD0|,g if(tmpFile.exists ()) ?w)A`G_ { i_I` bFirst = false; 475jmQ{q read_nPos(); J.0&gP V } TJ,?C$3 else A~LTi { 6\)u\m`7-l nStartPos = new long[bean.getNSplitter()]; T8j<\0WW nEndPos = new long[bean.getNSplitter()]; V7+/|P_ } ^q<EnsY }5X.*wz QKoJxjR=^ T$V8n_; } y! j>_m){w 9Lqz:4} `EiL~* public void run() LBcqFvj{& { %Wc$S]>i //获得文件长度 ;[|+tO_ //分割文件 {|e7^_ ke //实例FileSplitterFetch ikPr> //启动FileSplitterFetch线程 J/[PA[Rf //等待子线程返回 UG<<.1JL try{ V.o*`V if(bFirst) J!'IkC$> { >Q)S-4iR nFileLength = getFileSize(); **ls 4CE< if(nFileLength == -1) zXd#kw; { YIYuqtnSJ System.err.println("File Length is not known!"); e"2x!(&n( } u5,vchZ else if(nFileLength == -2) \/r]Ra { =e6!U5
f System.err.println("File is not access!"); E7]a# } (. ,{x)H else [bN_0T.YI { v\XO?UEJ2 for(int i=0;i<nStartPos.length;i++) X d&oERJj { L-e6^%eU nStartPos = (long)(i*(nFileLength/nStartPos.length)); R7x*/? } _cbXzSYq& for(int i=0;i<nEndPos.length-1;i++) b+71`aD0 { W#9LK
Jj nEndPos = nStartPos[i+1]; /NVyzM51V } WVL\|y728s nEndPos[nEndPos.length-1] = nFileLength; 57$/Dn } ;ZZmX]kz,M } 5WtI.7r &hzr(v~; 1w>G8 //启动子线程 o6r
^ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; jgw+c3^R_ for(int i=0;i<nStartPos.length;i++) k6_OP] { QO|jdlg fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^ =H 10A siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), C7Hgzc|U nStartPos,nEndPos,i); "l6Ob Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); COSQ fileSplitterFetch.start(); Z0Qh7xWve } 1sfs!b&E // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [wUJ~~2# siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); mS]soYTQ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", '_xa>T} nEndPos = " + nFileLength); CWnRRZ}r // fileSplitterFetch[nPos.length-1].start(); JZD&u6tB /?6 ;7!u(XzN //等待子线程结束 T{ /\q 5 //int count = 0; w)gMJX/0yw //是否结束while循环 ]tEH `Kl boolean breakWhile = false; o(xt%'L`t IPnx5#eB
Ly6) ,[q~ while(!bStop) M,P:<-J { hQDl&A write_nPos(); w{Y:p[} Utility.sleep(500); rVnolA*% breakWhile = true; <P
c;8[ 0U:9&jP, ^^gV@fz for(int i=0;i<nStartPos.length;i++) `mKK1x { X!]p8Q y if(!fileSplitterFetch.bDownOver) ybgw#jv= { m pM,&7} breakWhile = false; jiLt *>I break; Oxh.& } 97VS
xhr } [JVUa2Sm if(breakWhile) T-lHlm break; "ODs.m oq &4Y@-;REt l' a<k" //count++; n UD;y}}n //if(count>4) gUv`G // siteStop(); HQ3kxOT } *lp{, rcjj(
C `,FvYA" System.err.println("文件下载结束!"); ]N1gzHaS } |_wbxdq catch(Exception e){e.printStackTrace ();} 0bR})}a+Yg } :FI4GR*? c(!{_+q" 5E\&O%W" //获得文件长度 ro@`S: public long getFileSize() @*~cmf&FIQ { 8x<; AL|` int nFileLength = -1; |'12Kv]#Xa try{ </7?puVR URL url = new URL(siteInfoBean.getSSiteURL()); VXu1Y xY HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); >J@hqW httpConnection.setRequestProperty("User-Agent","NetFox"); `T$CUlt6 4031~A8 mybjcsV4
int responseCode=httpConnection.getResponseCode(); Vu1X@@z if(responseCode>=400) {@<EVw { jX{t/8v/s4 processErrorCode(responseCode); =h}IyY@o return -2; //-2 represent access is error J"]P"`/ } {K+]^M lnRbvulH MIWI0bnf String sHeader; '~kAsn*/ dK?vg@|' 4krK CD>|G for(int i=1;;i++) NxQ+z^o\ { pL)o@-k#% //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); qi-!iT(fe //Utility.log(in.readLine()); h8tKYm sHeader=httpConnection.getHeaderFieldKey(i); +"2IQme5 if(sHeader!=null) i^u5j\pfY* { l+i9)Fc<i if(sHeader.equals("Content-Length")) EU-=\Y { TZ%u;tBH: nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); iMr/i?`i break; O[#pB.
4 } MzO4Yv"A } BF>3CW7 else 3 ~^ }R break; >gTrui{, } mkOj&Q } l*C(FPw4 catch(IOException e){e.printStackTrace ();} uWKc
. catch(Exception e){e.printStackTrace ();} O U3KB YDr/Cw>J J^BC Utility.log(nFileLength); ! <xe Ao%8 6tg0=_c QC*>
qo return nFileLength; q!+m,
!M } t9B]V cA{zyq26 5n'C6q " //保存下载信息(文件指针位置) .I&]G private void write_nPos() _4jRUsvjY { @I^LmB9* try{ <kr%ylhIu output = new DataOutputStream(new FileOutputStream(tmpFile)); nWAx!0G output.writeInt(nStartPos.length); DU/WB for(int i=0;i<nStartPos.length;i++) 8P'zQ:#RV { -hIDL'5u-I // output.writeLong(nPos); Ou<Vg\Mu output.writeLong(fileSplitterFetch.nStartPos); 2qD80W<1 output.writeLong(fileSplitterFetch.nEndPos); a,sU-w!X' } i-4pdK u output.close(); DpaPRA)x } F&om^G'U catch(IOException e){e.printStackTrace ();} Jr4^@]78o< catch(Exception e){e.printStackTrace ();} p%v+\T2r } 'rwnAr sOBy)vq?\ wLf=a^c# //读取保存的下载信息(文件指针位置) T};fy+iq private void read_nPos() E#=slj@ { Jm+;A^; try{ ;8
D31OT DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,!?&LdPt> int nCount = input.readInt(); k )T;WCia nStartPos = new long[nCount]; h)qapC5z, nEndPos = new long[nCount]; sKT GZA for(int i=0;i<nStartPos.length;i++) )0I;+9:D= { mw1|>*X&R nStartPos = input.readLong(); kU5chltGF nEndPos = input.readLong(); wv8WqYV } si nnHQ input.close(); *VFUC: } |-c)OS3#D catch(IOException e){e.printStackTrace ();} /~Q2SrYH catch(Exception e){e.printStackTrace ();} Q!<b"8V] } qUY QN2wG ]#N~r&hmQ +)4_1i4"x private void processErrorCode(int nErrorCode) jHj*S9:` { {Y! -]_5 System.err.println("Error Code : " + nErrorCode); 8N|y } lxpi =sk]/64h`` }. x&}FqXE //停止文件下载 OJUH".o public void siteStop() jc|"wN] { 5!T\L~tyt bStop = true; i(XcNnn6 for(int i=0;i<nStartPos.length;i++) *LbRLwt fileSplitterFetch.splitterStop(); 5X5 &(S\ 8uR4ZE* _T 5ZL } bt/u^E } }-:s9Lt //负责部分文件的抓取 `)[bu **FileSplitterFetch.java tU02t#8 */ Wv]NFHe# package NetFox; IG1+_-H: MH+t`/E0] '{:WxGgi import java.io.*; , wT$L3 import java.net.*; 4%TY`
II ]C =+ &xlz80% public class FileSplitterFetch extends Thread { i6p0(OS&D -o\r]24
2L~[dn.s String sURL; //File URL .FS`Fh; long nStartPos; //File Snippet Start Position vt3yCS long nEndPos; //File Snippet End Position _
FcfNF int nThreadID; //Thread's ID {"dU?/d boolean bDownOver = false; //Downing is over X#$mBRK7 boolean bStop = false; //Stop identical ,nJYYM
FileAccessI fileAccessI = null; //File Access interface C%8jWc ?\C7.of #TLqo(/ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException C< GS._V& { lZ5 lmsCU this.sURL = sURL; mJaWzR this.nStartPos = nStart; }];8v+M this.nEndPos = nEnd; M~Yho". nThreadID = id; o:<gJzg fileAccessI = new FileAccessI(sName,nStartPos);//定位 Jb'M/iG } `CP}1W> [.O3z*[9# _h4{Sx public void run() ]~:9b[G2 { :?VM1!~ga while(nStartPos < nEndPos && !bStop) E4^zW_|xE { Z_oBZs $2=-Q/lM }4PIpDL try{ XY]|OZ7( URL url = new URL(sURL); xeqAFq=9? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3"HpM\A{A= httpConnection.setRequestProperty("User-Agent","NetFox"); Nj
Ng=q String sProperty = "bytes="+nStartPos+"-"; 5Uc!;Gd?b httpConnection.setRequestProperty("RANGE",sProperty); rULrGoM Utility.log(sProperty); w\U
fq }VlX!/42 /jdq7CF InputStream input = httpConnection.getInputStream(); B1]dub9 //logResponseHead(httpConnection); V#:`:-$$+
hfpSxL '"{ IV byte[] b = new byte[1024]; _C3l2v'I$ int nRead; P>/n!1c while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >E&mNp { A+Nf]([ nStartPos += fileAccessI.write(b,0,nRead); U$j*{`$4 //if(nThreadID == 1) W8:?y*6 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); iq> PN:mr } ?:(BkY,K5 SG1fu<Q6J t&+f:)n Utility.log("Thread " + nThreadID + " is over!"); "oX@Z^ bDownOver = true; Hf( d x\5 //nPos = fileAccessI.write (b,0,nRead); _Y'+E } kK2x';21 catch(Exception e){e.printStackTrace ();} #M;Cw}pW } -I7"9}j3 } -,NiSh}A Qo>VN`v +;7Rz_.6f //打印回应的头信息 4-@D` ,3L public void logResponseHead(HttpURLConnection con) Z `FqC { 9H~3&-8& for(int i=1;;i++) LMchNTL { ZzA4iT=KO String header=con.getHeaderFieldKey(i); [,s{ /OM if(header!=null) Gma)8X# //responseHeaders.put(header,httpConnection.getHeaderField(header)); )v&r^DR_ Utility.log(header+" : "+con.getHeaderField(header)); b&BSigrvou else +@),Fk_ break; [ay~l%x } }Wf \\ } ^J3\
U{B qF m=(J% 9s\;,!b public void splitterStop() N>?R,XM
V { XJl2_# bStop = true; *rPUVhD_ } 5a1)`2V2M uc@f# (- CN6@g^)P } -`FPR4; G<9UL*HU 8YJ8_$Z /* qP<wf=wY **FileAccess.java y#HDJ=2 *//文件访问(定位,写) "71@WLlN package NetFox; ,6Ulj+l import java.io.*; A+d&aE}3V _
F&BSu Vt-D8J\A
0 public class FileAccessI implements Serializable{ Sns`/4S?6Z W)^0~[`i //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Gj]*_"T RandomAccessFile oSavedFile; j,")c'r&dD long nPos; y=) Cid B`,4M& Rckqr7q public FileAccessI() throws IOException .b*%c?e { a= *&OW this("",0); #% PnZ
/ } J1kG'cH05 )8Defuxk +~lZ]a7k public FileAccessI(String sName,long nPos) throws IOException i9?$BZQ[R { (rV#EA+6[` oSavedFile = new RandomAccessFile(sName,"rw"); aW-'Jg=@H^ this.nPos = nPos; Bi?+e~R oSavedFile.seek(nPos); Wh4`Iv\. } U5 ~L^ AW;"` ]. }r:H7&|& public synchronized int write(byte[] b,int nStart,int nLen) EAYx+zI { j#e^PK < int n = -1; IM:*uv try{ .[Ezg(U}ze oSavedFile.write(b,nStart,nLen); .c~`{j} n = nLen; Z'EXq.hk } dLQV>oF catch(IOException e) L1;IXCc= { 9$F '*{8 e.printStackTrace (); g7G=ga } GmoY~}cg~ "|&xUWJ!) 8Qtd, return n; O?|st$g } Ym~*5| KF&1Y>t= .iFd } |7XV!D!\g hawE2k0p( S~auwY ,< /* 6A$
\I44 **SiteInfoBean.java cl s-x@
Kd */ Q$_S/d%* package NetFox; G%N3h'zDi u`Kjs}F' _:|/4.]`_ public class SiteInfoBean { \Q[u ?/TF n DLr17 zx private String sSiteURL; //Site's URL vr#_pu)f4 private String sFilePath; //Saved File's Path p-QD(+@M private String sFileName; //Saved File's Name fy at-wbb private int nSplitter; //Count of Splited Downloading File K1c@]]y) TqURYnNd s UX%{|T_ public SiteInfoBean() pq0F!XmU {//nSplitter的缺省值为5 *gHGi(U(U //default value of nSplitter is 5 =sVB.P this("","","",5); :n36}VG| } >% a^;gk( Wx&gI4~ |1vikG8 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) _B4H"2}[Y { {VOLUC o 4 sSiteURL= sURL; ZsjDe {TH sFilePath = sPath; }Xv2I$J sFileName = sName; @?,iy?BSG this.nSplitter = nSpiltter; )LE SdX ~x`BV+R afEhC0j } '{9nQDgT 1muB*
O 9L+dN%C public String getSSiteURL() z&!n'N<C { (9bFIvMc return sSiteURL; !9+xKr99 } '5j$wr zt QAiont ,! -A}U^-'a} public void setSSiteURL(String value) 5AV5`<r. { P~Cx#`#(V sSiteURL = value; ~4YU } %<cfjo *^]Hqf(` <4!SQgL public String getSFilePath() Z["[^=EP { JY4sB8 return sFilePath; H4#|f n } ;E? Z<3{ ]=T`8)_r) k.b->U public void setSFilePath(String value) DpG|Kl|d { 7;H!F!K] sFilePath = value; \%fl`+` } EMyMed_ $`L!2 ^(5Up=.EA public String getSFileName() "P O>@tY { `/en&l return sFileName; -X#Zn># } =bt/2nPV {ir8n731p
Ys8p,.OMs public void setSFileName(String value) z:C
VzK, { u_+64c_7 sFileName = value; FM\yf]' } Qs(WyP# gWcl@|I;\ yEm[C(gZ public int getNSplitter() ^_dYE]t { d ;GF<bz return nSplitter; iY
@MnnX } nqX)+{wAXe nSWW^ ; vMBF7Jfx public void setNSplitter(int nCount) ?2D1gjr { D@:w/W nSplitter = nCount; sB|>\O#- } iQry X(z } hrsMAh! l#!p?l 5$C4Ui{<E' /* BJzNh>-#= **Utility.java e))fbv&V */ 3K
Y-+ k package NetFox; .<Y7,9;YEF 1k&**!S]% q cYF& public class Utility { &p>VTD ~y@,d yQ5F'.m9e public Utility() `Mj>t( { Y](kMNUSg B J,U,! 2%0J/]n\A" } P GTi-o} ` drds //线程睡眠 p$r=jF& public static void sleep(int nSecond) -[\+~aDH, { DIx!Sw7EC try{ i"eUacBz/- Thread.sleep(nSecond); Y*!J +A# } 6.X| .N catch(Exception e) q/I':a[1 { 3C8cvi[IS e.printStackTrace (); JO*}\Es } ,Jqi J?,4C } =pQ'wx|>| Uy8r
!9O //日志 {FV_APL9_ public static void log(String sMsg) Ja$Ple*XU8 { k%UE^ System.err.println(sMsg); ]xhZJ~"@u }
5X2&hG* TFrZ+CcWp2 MfzSoxCb public static void log(int sMsg) 3LT[?C]H$ { s zgq7 System.err.println(sMsg); s d-5AE } ["N{6d&Q } qo2/? ]
/%W&zd=%# >lZ9Y{Y4v /* xWNB/{F **TestMethod.java \>}G|yL */ TL%2?'G package NetFox; oA_T9uh[ e;QPn( {<\ [gm\X public class TestMethod { -)S(eqq1 g=8}G$su{% )?@X{AN& public TestMethod() /5@4}m>Z@ { ///xx/weblogic60b2_win.exe @EPO\\C"f try{ P)VysYb? SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); sn.Xvk%75 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5);
3vs;ZBM SiteFileFetch fileFetch = new SiteFileFetch(bean); zq(R !a6 fileFetch.start(); Q&p'\6~ } Aw]W- fx catch(Exception e){e.printStackTrace ();} r!DUsE VK7lm|J+ gEFs4;
CN } }E?{M~"< sA(
e ?f9@ public static void main(String[] args) nq9|cS%- { }jF67c-> new TestMethod(); 8Ja't8 } D;~c`G
"f }
4d\1W?i- 点击下载更多相关资料
|