-
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
|
/* R1*4 **SiteFileFetch.java JHXkQz[Jb */ LM+d3|gSV package NetFox; NJ]3qH import java.io.*; a9UXg<4 import java.net.*; rOz1tY)l0d S8Y\@C?5 uovv">Uw public class SiteFileFetch extends Thread { b]fx !-.GfI:q \H~zN]3^
SiteInfoBean siteInfoBean = null; //文件信息Bean :m(DRD long[] nStartPos; //开始位置 :PtZKt;~X long[] nEndPos; //结束位置 X^Z!!KTH FileSplitterFetch[] fileSplitterFetch; //子线程对象 ^5.XQ0n long nFileLength; //文件长度 0y6M;"&~E boolean bFirst = true; //是否第一次取文件 *ziR &Fr! boolean bStop = false; //停止标志 L,[Q{:C S File tmpFile; //文件下载的临时信息 Fs].Fa DataOutputStream output; //输出到文件的输出流 N0.|Mb"?t R(`:~@3\6 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) tAF?.\x"g public SiteFileFetch(SiteInfoBean bean) throws IOException 8!rdqI { .w;kB}$YC siteInfoBean = bean; >mai
v; //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); *8WB($T} tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 2ozh!8aL if(tmpFile.exists ()) %IX)+
Lp` { ATl?./T u bFirst = false; Z*q9vX read_nPos(); }!AS? } X!p`|i else z
-!w/Bv@ { 3f] ;y<Km nStartPos = new long[bean.getNSplitter()]; +a3E=GJ nEndPos = new long[bean.getNSplitter()]; S0)JIrrHC } 68Gywk3]=u 8HQ.MXKP *y!O\-\S#> !:^q_q4 } $2Whb!7Z( _r*\ BM8y eHuJFM public void run() njF$1? )sq { D &"D[|@ //获得文件长度 y
%Q. ( //分割文件 <Gi%+I@szl //实例FileSplitterFetch +cfEyiub //启动FileSplitterFetch线程 z*EV>Y[ //等待子线程返回 y:W6;R try{ V0=%$tH if(bFirst) [b:&y( { gvA}s/ nFileLength = getFileSize(); -2M~KlYl if(nFileLength == -1) S^eem_C { x9vSekV System.err.println("File Length is not known!"); G}fBd } @kWL "yy, else if(nFileLength == -2) +e-F`k { x#J9GP. System.err.println("File is not access!"); gSz<K.CT } x9"Cm;H% else HOR8Jwf: { 9{*{Ba for(int i=0;i<nStartPos.length;i++) P.'.KZJ:WD { @up,5` nStartPos = (long)(i*(nFileLength/nStartPos.length)); %.Ma_4o
Z } -B
*W^-;* for(int i=0;i<nEndPos.length-1;i++) C9!t&<\} { @-'a{hBR nEndPos = nStartPos[i+1]; R}ki%i5| } hMa; \ k nEndPos[nEndPos.length-1] = nFileLength; Y~WdN<g } %_ibe } jYHn J}< *nCA6i QB*,+u4 //启动子线程 i6WH^IQ M fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; nm- for(int i=0;i<nStartPos.length;i++) j
uA@"SG { wq$$.
.E fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), cZYy+ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), zm" nStartPos,nEndPos,i); n#lbfN 4 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); {]k#=a4 fileSplitterFetch.start(); mn7I# ~ } wJy]Vyd // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Mu\V3`j siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 3iCe5VF // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", rwRZGd *p nEndPos = " + nFileLength); ~"#0rPT // fileSplitterFetch[nPos.length-1].start(); hdPGqJE %Mda<3P r#sg5aS7O| //等待子线程结束 cx\E40WD //int count = 0; qGk.7wf% //是否结束while循环 Q@ VA@N=w boolean breakWhile = false; WH:dcU * Gg7(cnpw Ew/MSl6} while(!bStop) &C9IR,& { iWs6 !s! write_nPos(); ;6G]~}>o Utility.sleep(500); O[ma% E*0 breakWhile = true; v$y\X3)mB kE&R;T`Gb% ZISIW! for(int i=0;i<nStartPos.length;i++) T:za},- { =Z\q``RBy if(!fileSplitterFetch.bDownOver) 4uXGpsL { Dvg' breakWhile = false; OrkcY39"~a break; &FXf]9
_X } kTL{Q0q } Bhv;l/K]) if(breakWhile) ^E70$yB^ break; <Wn~s= 9q`Ewj R QVT0.GzR //count++; e>MtDJ5 //if(count>4) 2{ F-@}= // siteStop(); |]&3*%b@ } LJeq{Z #{6VdWZ xWxHi6U( System.err.println("文件下载结束!"); *~PB } mdc?~?? 8 catch(Exception e){e.printStackTrace ();} A;co1,]gR } -H60T,o
G*=HjLmZg Y=XDN: //获得文件长度 sp\6-*F public long getFileSize() 6tH}K { ~VsN\! G int nFileLength = -1; w7MRuAJ4 try{ x1@,k=qrd URL url = new URL(siteInfoBean.getSSiteURL()); >WZ.Dj0n HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F 'uqL+jVO httpConnection.setRequestProperty("User-Agent","NetFox"); :` SIuu~@ RuHDAJ"&a zA#pgX[# int responseCode=httpConnection.getResponseCode(); H:G``Vq;0m if(responseCode>=400) D <iG*I { (%^C}`|EA processErrorCode(responseCode); nAP*w6m0j return -2; //-2 represent access is error K_MEd1l } g2f"tu_/% (Yy#:r;U qsj$u-xhX String sHeader; L` [iI upMs yLp( Y1Ql_ for(int i=1;;i++) {MtJP:8Jp { RPX.?;": //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); \#[DZOI~ //Utility.log(in.readLine()); c44s@E sHeader=httpConnection.getHeaderFieldKey(i); _N5pxe` if(sHeader!=null) 27Gff(
{ =ls+vH40& if(sHeader.equals("Content-Length")) JrBPx/?(,; { Yup#aeXY/ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); tar/n o break; R&!;(k0 } Wps^wY } DcxT6[ else *$cx7yJ break; %R5- 6 } e/4C` J- } m+M^we*R catch(IOException e){e.printStackTrace ();} HL{aqT2 catch(Exception e){e.printStackTrace ();} <8(q. ftn10TO * @0@WklAJA Utility.log(nFileLength); /R|?v{S1 Da<`|
l @Mya|zb return nFileLength; U/Cc!WXV] } dsX"S;`v Lum=5zDo 1!zd#TX //保存下载信息(文件指针位置) )7NK+k private void write_nPos() VK/L}^=GOO { c6b51)sQ" try{ X[/7vSqZ@w output = new DataOutputStream(new FileOutputStream(tmpFile)); hGKQK
^bn output.writeInt(nStartPos.length); Wt%Wpb8 for(int i=0;i<nStartPos.length;i++) /\,3AInLb { 7jw+o*; // output.writeLong(nPos); uBG!R#T output.writeLong(fileSplitterFetch.nStartPos); ce$[H}rDB output.writeLong(fileSplitterFetch.nEndPos); g8/ ,E-u } eJf]"- output.close(); 8A0a/
7Lj } }#<Rs catch(IOException e){e.printStackTrace ();} SOPair <r catch(Exception e){e.printStackTrace ();} hcW>R } $mT)<N ;w /pRv
i>_(: .8'c
c8 //读取保存的下载信息(文件指针位置) -I4@6vE, private void read_nPos() ,]t_9B QK { A#`$#CO try{ e6*,MnqBh DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |Fx *,91 int nCount = input.readInt(); xm=Gt$>.o nStartPos = new long[nCount]; sw9ri}oc nEndPos = new long[nCount]; 6lpJ+A57# for(int i=0;i<nStartPos.length;i++) $J4)z&%dr { ~|<'@B!6 nStartPos = input.readLong(); 3ylSO73R nEndPos = input.readLong(); ;pL!cG@ } y ~-v0/ input.close();
"O#
V/( } i\uj>;B catch(IOException e){e.printStackTrace ();} IT#Li catch(Exception e){e.printStackTrace ();} bR}fj.gP } `s69p'<;p k v_t6 (qd {^Q,G x( private void processErrorCode(int nErrorCode) M:.+^.h { ]*MVC/R, System.err.println("Error Code : " + nErrorCode); %O!xrA{ } F7<u1Rx] 3;jxIo$, 83]m/Iz //停止文件下载 97HI9R public void siteStop() ;wJe%Nw? { -~RGjx bStop = true; e2fv% for(int i=0;i<nStartPos.length;i++) X!{K`~DRX fileSplitterFetch.splitterStop(); |7KWa(V5I >tkz%;6 yFd .tQs } }T PyHq" } {\k }:) //负责部分文件的抓取 `'3&tAy **FileSplitterFetch.java w)&4i$Lk6 */ eU)QoVt package NetFox; G]$EIf' 6pb~+=3n R@uA4Al import java.io.*; \)6AzCq import java.net.*; <l!:#u tZx}/&m- amExZ/ public class FileSplitterFetch extends Thread { s;l"'6:_ Q(Yn8t cDYOJu. String sURL; //File URL ]Ar,HaX- long nStartPos; //File Snippet Start Position RnC+]J+?4 long nEndPos; //File Snippet End Position GJ`._ju int nThreadID; //Thread's ID -Ju;i< boolean bDownOver = false; //Downing is over ukVBC"Ny boolean bStop = false; //Stop identical ue?3;BF 5 FileAccessI fileAccessI = null; //File Access interface a>-qHX-l 0t(c84o5 ]1zud public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException #l`\'0`. { 30SQ&j[N] this.sURL = sURL; ~K5A$s2 this.nStartPos = nStart; QrFKjmD< this.nEndPos = nEnd; Y^DGnx("m nThreadID = id; 3.P7GbN fileAccessI = new FileAccessI(sName,nStartPos);//定位 Xf"<
>M } O8>&J-+2 raSga'uT; rtbV*@Z public void run() p(="73 { AEx VKy while(nStartPos < nEndPos && !bStop) 0Ntvd7"`} { l1`r%9gr @(*A<2;N 3P>1-= try{ Dk$<fMS,7c URL url = new URL(sURL); Al@. KTK HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3*\Q]|SI! httpConnection.setRequestProperty("User-Agent","NetFox"); SHB'g){P String sProperty = "bytes="+nStartPos+"-"; av5a2r0W1 httpConnection.setRequestProperty("RANGE",sProperty); >z/.8!#Q Utility.log(sProperty); !%t2ZQJq EbX!;z j+dQI_']x InputStream input = httpConnection.getInputStream(); ;;
{K##^l //logResponseHead(httpConnection); N(yd<Mw vf#d \et2aX ! byte[] b = new byte[1024]; 0WKS int nRead; 4^YE*6z while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) cX4]ViXSr { K1R?Qt,qDF nStartPos += fileAccessI.write(b,0,nRead); 9c*B%A8J //if(nThreadID == 1) ")txFe // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9LBZMQ } Dm}M8`|X x@/:{B F#)bGi Utility.log("Thread " + nThreadID + " is over!"); ~#P]NWW%. bDownOver = true; fI<d&5&g //nPos = fileAccessI.write (b,0,nRead); ]91QZ~4a } UU[z\^w| E catch(Exception e){e.printStackTrace ();} zG/? wP" } k?L2LIB< } Ndb7>"W qP&:9eL B/;'D7i|S //打印回应的头信息 %I!2dXNFRF public void logResponseHead(HttpURLConnection con) '+vmC*-I( { r_,;[+! for(int i=1;;i++) `jr?I {m; { Ya!%o> J%t String header=con.getHeaderFieldKey(i); kw#-\RR_c if(header!=null) %QGw`E //responseHeaders.put(header,httpConnection.getHeaderField(header)); Fsx<Sa Utility.log(header+" : "+con.getHeaderField(header)); 75>Ok / else .L"IG=Uh# break; $)X8'1%6 } KUm?gFh } P7Qel , xYW&Mfka @^.W|Zh[& public void splitterStop() VlL%dN;
0 { QX<x2U bStop = true; [.Kp/,JY } 1kvs2 #,6T. O u-:3C<&> } ; Ad5Jk nfGI4ZE kQ lwl9 /* N]|>\ **FileAccess.java cL03V? }
~ *//文件访问(定位,写) rMZuiRz* package NetFox; B@6L<oZ import java.io.*; g*LD}`X/- 8 Zp^/43 t#t[cgI public class FileAccessI implements Serializable{ SZ$WC8AX >zL5*:G //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 m_Q&zp[" RandomAccessFile oSavedFile; _!,
J iOI long nPos; q-_!&kDK" ^->S7[N? bJD$!*r\%! public FileAccessI() throws IOException ysp`(n= { ey4.Hj#T this("",0); NIbK3`1 } w7Y@wa! 02*qf:kTnA 8=joVbs public FileAccessI(String sName,long nPos) throws IOException udLI AV* { 6j6;lNUc oSavedFile = new RandomAccessFile(sName,"rw"); fxr#T'i this.nPos = nPos; {N/%%O.b oSavedFile.seek(nPos); sO6=w%l^ } yrfV&C%=n r@Jy*2[-Jq Yb/*2iWX public synchronized int write(byte[] b,int nStart,int nLen) 9`Fw}yAt { s<k2vbhI int n = -1; vPz7*w try{ *x;4::'Jn oSavedFile.write(b,nStart,nLen); : N$-SV n = nLen; r-.@MbBm } h"0)spF"d catch(IOException e) u5glKE { ;`:YZ+2
Z e.printStackTrace (); 1,bE[_ } ,#&7+e!]>P 5Lej_uqF
T>L?\- return n; lG94^|U } SZHgXl3: pWJEFm (?zD!%
k } <"P-7/j3j hdrsa}{g \y=oZk4 /* q^EY?;Y **SiteInfoBean.java X|eZpIA45 */ )S2yU<6oOt package NetFox; s:"Sbml xSK#ovH2 W [K.|8ho public class SiteInfoBean { Xw!\,"{s x4H#8ZK! zp1ym}9M private String sSiteURL; //Site's URL \P?X`]NwnO private String sFilePath; //Saved File's Path VK1B}5 / private String sFileName; //Saved File's Name z^Ikb(KC private int nSplitter; //Count of Splited Downloading File ozRTY9S
_; R( FQ+h @y`xFPB public SiteInfoBean() G`>]ng {//nSplitter的缺省值为5 ^9q#,6 //default value of nSplitter is 5 g;8 wP5i this("","","",5); _J W|3q } er)I ".| Xzf,S;XV~ oYStf5 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) @&O4a2+ { HRDpFMA/~ sSiteURL= sURL; p.=9[` sFilePath = sPath; wLXJ?iy3 sFileName = sName; U"p</Q this.nSplitter = nSpiltter; `**{a/3 <c pck tULGfvp } bP9ly9FH @3O)#r}\ `!HD.
E[2c public String getSSiteURL() "Nj/{BU { 4r1\&sI$~ return sSiteURL; &o;0%QgF } x
I.W-js[ }:Z A) 7D#y public void setSSiteURL(String value) iT4*~(p 3 { bhpku=ov sSiteURL = value; U-u?oU-.' } )P:^A9&_n= IFX$\+- cZ?QI6|[ public String getSFilePath() d-UeItyW* { s51$x M return sFilePath; PWpt\g } Lau@HYW0 ;X,u "[|b,fxR public void setSFilePath(String value) e}e8WR=B { ns8s2kYcm sFilePath = value; x 6`! } "+"=iwEAz +&`W\?.~ !=,4tg` public String getSFileName() "S%t\ { 1jl!VU6 return sFileName; E6A"Xo } '3( ^Zv G-Tmk7m |HAJDhM,l public void setSFileName(String value) oY18a*_>M1 { }p7iv:P=3 sFileName = value; }6c>BU}DF } ijF_
KP' ssi7)0 MePD:;mm^ public int getNSplitter() Nujnm$!,Q { WD[eoi return nSplitter; >0IZ%Wiz } ;hX( /T vjGQ! xF 0Z9DewwP public void setNSplitter(int nCount) Z .6dL { hi0HEm\ nSplitter = nCount; 8vY-bm,e } >d 2Fa4u3 } 5~JT*Ny H$(bSw$ zN4OrG0 /* Ic#xz;elM **Utility.java JQ&t"`\k */ 2d !'9mA package NetFox; i<m(neX[H \2i7\U #&&T1;z"# public class Utility { _>;Wz7 !Lf<hS^ V)`2Kw public Utility() IY`p7 )#i { =?fz-HB $<^t][{ Dm>"c;2 } IU%|K~_n NI >%v //线程睡眠 @w[i%F,&` public static void sleep(int nSecond) iq(PC3e`V { 'pdTV:]zA try{ XIHN6aQ{X Thread.sleep(nSecond); _!\d?]Ya } +2~kHrv catch(Exception e) ,kN;d}bg { #<im? e.printStackTrace (); 6[> lzEZ } X*8y"~X|vq } *v>ZE6CL ,5}U
H //日志 |\5^ub,m public static void log(String sMsg) 0lfK}
a { >H2`4]4] System.err.println(sMsg); vT'Bs;QR } !>8~R2 RK>Pe3< K7+yU3 public static void log(int sMsg) WSkGVQu { =l,P'E System.err.println(sMsg); AlSO } 6OES'3 Cy } '|C3t!H` ly[LF1t E$e7(D /* ~4S$+*'8 **TestMethod.java wbO6Ag@)) */ C6_(j48& package NetFox; ?Ec9rM\ze RU )35oEV| Y?VbgOM) public class TestMethod { {f!/:bM ?9b9{c'an +]db- public TestMethod() }I"C4'(a { ///xx/weblogic60b2_win.exe kIrrbD try{ (B7G'h.? SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); \{,TpK. //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); KhCP9(A=Qo SiteFileFetch fileFetch = new SiteFileFetch(bean); v<qh;2 fileFetch.start(); iTVe8eI } I$n=>s catch(Exception e){e.printStackTrace ();} d"$8-_K [|u^:&az 8sG3<$Z^ } $Gn.G_"v :QCL9QZ' ^E
!v D public static void main(String[] args) #x%'U}sF { 90}{4&C.^ new TestMethod(); QFyL2Xes/ } mCtS_"W } X'9.fKp 点击下载更多相关资料
|