-
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
|
/* 2~!+EH
**SiteFileFetch.java lm(k[]@ */ 1y6{3AZm< package NetFox; Qr]`flQ8 import java.io.*; u\ }"l2 r import java.net.*; Y2P%0 ]t.6bb4 JX2@i8[~ public class SiteFileFetch extends Thread { !^(?C@TQ eW;0{P {h}e 9 SiteInfoBean siteInfoBean = null; //文件信息Bean L%0G >2x long[] nStartPos; //开始位置 Hge0$6l long[] nEndPos; //结束位置 hH=}<@z FileSplitterFetch[] fileSplitterFetch; //子线程对象 *ta?7uSiT long nFileLength; //文件长度 @SH$QUM( boolean bFirst = true; //是否第一次取文件 Wt9'-"c boolean bStop = false; //停止标志 7G
&I]> File tmpFile; //文件下载的临时信息 Huho|6ohH DataOutputStream output; //输出到文件的输出流 Et+W LQ6) fV5MI[t //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) C?7I(b: public SiteFileFetch(SiteInfoBean bean) throws IOException Cc>+OUL { Tj,1]_`=V$ siteInfoBean = bean; &265
B_'D //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath()));
^#&:-4/ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); P^& =L&U if(tmpFile.exists ()) (@;=[5+ { #@K
%Mx bFirst = false; @hj5j;NHK read_nPos(); Ggp. %kS6F } q;=! =aRg else ?bH!|aW(H { /nVGr]t_pj nStartPos = new long[bean.getNSplitter()]; |lVoL.Z,0 nEndPos = new long[bean.getNSplitter()]; \"?5CHz* } }(Dt,F` *_!}g
] h5VZ-v_j >):^Zs } FR? \H"'x _jD\kg#LY ad,pHJ` public void run() >}6V=r3[+ { 5 p! rZ //获得文件长度 \ 3HB //分割文件 zpBkP-%}E //实例FileSplitterFetch 2(K@V6j$M //启动FileSplitterFetch线程 8)51p+a //等待子线程返回
<5:`tC2 try{ ><3!J+<? if(bFirst) D:vX/mf;7 { ~mK|~x01@ nFileLength = getFileSize(); aXRf6:\% if(nFileLength == -1) e)A-.SRiO$ { J0O wzO System.err.println("File Length is not known!"); acdF5ch@ } ="__*J#nze else if(nFileLength == -2) Rr6}$]1 { g]E>e v{` System.err.println("File is not access!"); xdkC>o4> }
mPS27z( else \O(~:KN { .<kbYo:MV for(int i=0;i<nStartPos.length;i++) QeNN*@
='i { _2E* nStartPos = (long)(i*(nFileLength/nStartPos.length)); #/LU@+ } fsz:A"0H for(int i=0;i<nEndPos.length-1;i++) jltW@co2sV { 0mi$_Ld+ nEndPos = nStartPos[i+1]; o2e gNTG } +jN%w{^= nEndPos[nEndPos.length-1] = nFileLength; Z[?zaQ$ } .}ePm( } ~"}o^#@DwJ Z,}c) @z1pE@7jK //启动子线程 kYnp$8 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; y,cz;2 for(int i=0;i<nStartPos.length;i++) u;3wg`e { )0N^rw kW fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), >dYN@cB$} siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #[ ?E, nStartPos,nEndPos,i); y';"tD Fb Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $s"{C"4q fileSplitterFetch.start(); } za"rU } Z|6,*XEc // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =Cg1I\ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); bTbF // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", UNJAfr P nEndPos = " + nFileLength); 1Zt>andBF // fileSplitterFetch[nPos.length-1].start(); -cP7`.a crl"Ec ^g
N/ 5 //等待子线程结束 $i]G'fj //int count = 0; AtYqD<hl: //是否结束while循环 Vh'H =J boolean breakWhile = false; SBh"^q L5 Q^cY]p jN T+?2 while(!bStop) GiS:Nq`$( { C q)Cwc[H write_nPos(); G;Py%8 Utility.sleep(500); 4c9a"v breakWhile = true; r}i}4K[1 =:;K nS 0I['UL^!F for(int i=0;i<nStartPos.length;i++) pX?/=T@ Bw { ,jq:%Y[KZ if(!fileSplitterFetch.bDownOver) :b`ywSp` { I#PhzGC@ breakWhile = false; vtF|:*h break; EaKbG> } i)th] 1K% } *~0U4kw+ if(breakWhile) l?)!^}Qc break; @RXkj-,eC# J^y?nE(j Z~1uyr( //count++; uZe"M(3r$ //if(count>4) 6<mlx' // siteStop(); yZQcxg% } PWk\#dJN& LDh,!5G-M Yan}H}Oq System.err.println("文件下载结束!"); hMnm> } ;b_l/T( catch(Exception e){e.printStackTrace ();} i!;9A6D } zEk/15 ,{X}C A~({vb' //获得文件长度 YF)k0bu&; public long getFileSize() apZPHau6h { }inV)QQ int nFileLength = -1; =z[$o9 try{ eI,H URL url = new URL(siteInfoBean.getSSiteURL()); 2{<o1x,Ym HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |8?e4yVd httpConnection.setRequestProperty("User-Agent","NetFox"); Zygu/M6 6u>]-K5 +E-CsNAZ*" int responseCode=httpConnection.getResponseCode(); EhAaaG if(responseCode>=400) {"c`k4R { c8LMvL processErrorCode(responseCode); -G(#,rXk return -2; //-2 represent access is error n?*r, )' } spT$}F2n x;{Hd;<YF X& mD/1 String sHeader; H3LuRGe&2 HZqk)sN gY!?JZC-0 for(int i=1;;i++) Cy dV$!&mP { '0w</g //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 0*E_D //Utility.log(in.readLine()); Q^bYx (r5w sHeader=httpConnection.getHeaderFieldKey(i); {mUt|m7! if(sHeader!=null) gI!d*]{BP { 055C1RV% if(sHeader.equals("Content-Length")) n8tw8o%&[ { %n6NVi_[ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /@B2-.w break; }N&?8s= } (hEg&@ } _y&XFdp else u+^KP>rM( break; 8u%,5GV>Xr } yLPP6_59$ } 09qfnQG catch(IOException e){e.printStackTrace ();} [&g"Z" catch(Exception e){e.printStackTrace ();} ,0c]/Sd*p WLA&K] 3CH>!QOA Utility.log(nFileLength); U(Tl$#Bt n?;h-KKO: g(9kc<`3'D return nFileLength; /_qHF- } #Vu;R5GZ} P=PeWX*L<Z '{-Ic?F<P //保存下载信息(文件指针位置) W-*HAS private void write_nPos()
T%Bz >K { l(W?]{C[% try{ 8L+A&^qx output = new DataOutputStream(new FileOutputStream(tmpFile)); y^z
c@f output.writeInt(nStartPos.length); QQHQ3\ for(int i=0;i<nStartPos.length;i++) N0%q66]1 { ZZ L@UO>: // output.writeLong(nPos); a@J/[$5 output.writeLong(fileSplitterFetch.nStartPos); n
=WH=:& output.writeLong(fileSplitterFetch.nEndPos); TOhWfl; } mfG m>U output.close(); Gu@C*.jj! } zdw*
?C catch(IOException e){e.printStackTrace ();} wX$|(Y} catch(Exception e){e.printStackTrace ();} Zl>dBc% } Ot)S\s> G<*
Iw>ep C1+f\A|9FP //读取保存的下载信息(文件指针位置) .9N7` private void read_nPos() >bd@2au9! { ~sZ$`t try{ U>OAtiq JX DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); I,<?Kv int nCount = input.readInt(); =Z{jc nStartPos = new long[nCount]; ?J,,RK. nEndPos = new long[nCount]; @meT8S9t for(int i=0;i<nStartPos.length;i++) 2W2T { ?T .=ym nStartPos = input.readLong(); &_u.q/~ nEndPos = input.readLong(); a#k7 aOT0 } ,i1BoG input.close(); &=MVX>[ } ^/6P~iK' catch(IOException e){e.printStackTrace ();} I)yF!E & catch(Exception e){e.printStackTrace ();} k~gOL#$ } XK\3"`kd Oet+$ b ,<Z,- 0S private void processErrorCode(int nErrorCode) 1=7ASS9 { UhrRB System.err.println("Error Code : " + nErrorCode); eWNg?*/ } CmV &+C$V% R7U%v"F>` jJ-C\
v //停止文件下载 uT'l.*W6i public void siteStop() ];lZ:gT { e#,(a bStop = true; [sjkm+
? for(int i=0;i<nStartPos.length;i++) % P Ex fileSplitterFetch.splitterStop(); zj(V\y&H #]6{>n1*+w yCA8/)>Gm } ma+AFCi } &x[7?Y L //负责部分文件的抓取 0#DEh|? **FileSplitterFetch.java :o .+<_& */ =JW-EQ6[T package NetFox; !><asaB]1 ;-XfbqZ\ vzFpXdt import java.io.*; \1LfDlQk) import java.net.*; o<%0|n_O& ^!d0abA NPS*0 y/ public class FileSplitterFetch extends Thread { #4b]j".P!n w#[cGaIB 3fp&iz String sURL; //File URL R^$|D)( long nStartPos; //File Snippet Start Position ;Xy=;Z.]i long nEndPos; //File Snippet End Position huS*1xl int nThreadID; //Thread's ID kaXq. boolean bDownOver = false; //Downing is over pmvd%X\f boolean bStop = false; //Stop identical ];4!0\M FileAccessI fileAccessI = null; //File Access interface U: Wet, rv(?%h`
4l%1D.3-O public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException :>2wVN&\c { !&>` this.sURL = sURL; (/N&_r4x this.nStartPos = nStart;
q:TNf\/o this.nEndPos = nEnd; .1jiANY nThreadID = id; "GQ Q8rQ fileAccessI = new FileAccessI(sName,nStartPos);//定位 %^HE^ & } 9i}$245lB y:}qoT_. z-606g public void run() uBa<5YDF { |Ia9bg'1U while(nStartPos < nEndPos && !bStop) p/?o^_s { 3_Xu3hNH! >>,G3/Zd* d_M+W@{ try{ w\YS5!P,V URL url = new URL(sURL); UJSIbb5 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8ZVQM7O httpConnection.setRequestProperty("User-Agent","NetFox"); Bskp&NV': String sProperty = "bytes="+nStartPos+"-"; ,`Y$}"M4 httpConnection.setRequestProperty("RANGE",sProperty); >*8V]{f9 Utility.log(sProperty); SXZ9+<\ w+R7NFq >e>3:~&2 InputStream input = httpConnection.getInputStream(); NeG`D' //logResponseHead(httpConnection); (pd$?vRy &<]f- B(++*#T!^m byte[] b = new byte[1024]; H{vKk int nRead; lQHF=Jex while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) X<}}DZSu a { Ly+UY.v" nStartPos += fileAccessI.write(b,0,nRead); _E`+0;O //if(nThreadID == 1) <3x%-m+p4 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ze eV- } 0H}tb}4 c\1X NPGG @%R4V[Lo. Utility.log("Thread " + nThreadID + " is over!"); `a4&_`E,p bDownOver = true; 5b7(^T^K //nPos = fileAccessI.write (b,0,nRead); hOUH1m. } 'UIFP#GtFO catch(Exception e){e.printStackTrace ();} o5tCbsHj- } MhD' } fw jo? oNAnJ+_ igfQ,LWe! //打印回应的头信息 |(z{)yWbC[ public void logResponseHead(HttpURLConnection con) b4e~Z { %- 540V{q for(int i=1;;i++) *y?HaU { p8~lGuH String header=con.getHeaderFieldKey(i); !%,7*F( if(header!=null) jU j\<aW //responseHeaders.put(header,httpConnection.getHeaderField(header)); P3&s<mh Utility.log(header+" : "+con.getHeaderField(header)); ORs:S$Nt$ else A_zCSRF, break; BB/wL_=: } i D IY| } tF`L]1r> F,wB6Cw 'F/oR/4, public void splitterStop() h#hr'3bI1 { _xaum bStop = true; {r&mNbz } 6:#o0OeBP WMf /
S"= (@+pz/ } t<p#u=jOa z3tx]Ade @kFZN 6 /* [Y
.8C$0 **FileAccess.java K$,Zg *//文件访问(定位,写) 5wx_ol}2 package NetFox; JY#vq'dl| import java.io.*; yS
W$zA, ZL6HD n! qPq]%G*{ public class FileAccessI implements Serializable{ [<RhaZz x|~8?i$% //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 &)1.z7T RandomAccessFile oSavedFile; ! Ld5Y$ long nPos; u?Ffqt9' ?s^qWA )j36Y =r3 public FileAccessI() throws IOException ,<rC,4-F< { h+Co:pr this("",0); Z@0tZ^V{ } ?.46X^ XjG S.&'I >&PM'k public FileAccessI(String sName,long nPos) throws IOException 7 m{lOR { !cyrt< oSavedFile = new RandomAccessFile(sName,"rw"); '? 5- this.nPos = nPos; ^5sA*%T4 oSavedFile.seek(nPos); PXMd=,} } w.?4}'DK vhfjZ ]].~/kC^3k public synchronized int write(byte[] b,int nStart,int nLen) t`Z'TqP R { %GhI0F # int n = -1; 1Toiqb/ try{ P8z%*/
3NF oSavedFile.write(b,nStart,nLen); ,eyh%k*hz n = nLen; 8_('[89m } u9hd%}9Qd? catch(IOException e) Ou_H&R { q5(t2nNb e.printStackTrace (); M&V'*.xz } c;VqEpsbl 'Lrn< 6m:$mhA5 return n; GmH DG- } =0ZRGp !?P8[K xuK"pS } \?xM%(:<Q |4df) xb,d,(^ ]R /* )^ah, ;( **SiteInfoBean.java [CJ<$R ! */ !O_G%+>5W package NetFox; U]cXE1c>F qbv\uYow3k >WSh)(Cg public class SiteInfoBean { o}rG:rhIh h9)S&Sk{s ybBmg'198 private String sSiteURL; //Site's URL {18hzhs private String sFilePath; //Saved File's Path tMxde+$y private String sFileName; //Saved File's Name ZxF`i>/h private int nSplitter; //Count of Splited Downloading File (P|[<Sd G4cgY|71 i0=U6S:# public SiteInfoBean() pe?)AiTZ: {//nSplitter的缺省值为5 DDeU: //default value of nSplitter is 5 T*x2+(r this("","","",5); #Z%"
?RJ } hq=;ZI |7|S>h^ Hl$W+e|tj public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) TjUwe@&Rw { .?:*0 sSiteURL= sURL; ?M4o>T%p " sFilePath = sPath; #t
;` sFileName = sName; ]fM|cN8(zM this.nSplitter = nSpiltter; Z 1HH0{q-A LikcW# @2>UR9j } k =! Q
{MgRi7 b84l`J public String getSSiteURL() yvd)pH<a2 { 5BVvT
`< return sSiteURL; [^qT?se{ } sINQ?4_8T o2!738 T9nb ~P[ public void setSSiteURL(String value) ?
:H+j6+f { h4;kjr}h} sSiteURL = value; jK w
96 } G2`z?);1b ~5KcbGD~ b80#75Bj> public String getSFilePath() Y(PCc}/\ { k\f
_\pj6 return sFilePath; meX2Y; } )WqolB /qLO/Mim l2
.S^S public void setSFilePath(String value) 'PF>#X'' { bZ`v1d
(r sFilePath = value; (0 T!-hsP } Hyb(.hlZh `!]|lI!GW &;@L]
o public String getSFileName() ;(i6 X) { cH5i420;aO return sFileName; *ID=X!v } N~)-\T:ap FGV
L[\ Q}AZkZ public void setSFileName(String value) t1 3V>9to { \g}]u(zg% sFileName = value; `5Y*)
q } ] ?DU8 h^3gYL7O6 R"t#dG]1t public int getNSplitter() _b&|0j:Ud { ~,)jZ-fw return nSplitter; 6W
i
n!4 } d/d)MoaJ*t iH(7.?.r qAjtvc2 public void setNSplitter(int nCount) SXL3>-Z E { {$frR "K nSplitter = nCount; 4"P9z}y=i } o 4F'z } SzW;Yb"#^k :>&q?xvA &da=hc,>% /* C$w%!
jE **Utility.java D[$"nc/ */ CNNqS^ct package NetFox; [> HKRVy [mtp-4* ob7'''i public class Utility { %-n)L Xh"9Bcjf o#qdgZ public Utility() ](r}`u%}y { Hx#YN*\.M ?}HK!feU j yHa}OT } S!?T0c?> w.m8SvS&b //线程睡眠 BE?]P?r? public static void sleep(int nSecond) pCKP{c=6Q { -E7mt`:d try{ _pdKcE\X Thread.sleep(nSecond); J9T2 p\5 } 7@c!4hmrU catch(Exception e) Myc-lCE { P+CV4;Xz e.printStackTrace (); i%i~qTN } opa/+V3E4 } yy3rh(ea I!/32* s1t //日志 Ca |}i+ public static void log(String sMsg) mb*Yw6q { s#$t!F??9 System.err.println(sMsg); {it.F4. } +g1>h,K 3 H!;N0",]N oG,>Pk public static void log(int sMsg) O,%UNjx9K { mE~WE+lw9 System.err.println(sMsg); y [Vd*8 } +<E#_)}`D6 } P'~`2W0sz >2#<gp3 er3Mvw /* -zK>{)Z=q **TestMethod.java D.Ke */ ~n
'A1 package NetFox; I0
t#{i @GQe-04W` P-X|qVNK1Z public class TestMethod { +^7cS6"L p3P8@M P& 1$SWNyW public TestMethod() \;7U:Y$v { ///xx/weblogic60b2_win.exe Cmx<>7fN try{ nlv,j& SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); S}C[ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 6mcb'hy SiteFileFetch fileFetch = new SiteFileFetch(bean); QSaDa@OV fileFetch.start(); JC'3x9_<z } SQ)BS/8A catch(Exception e){e.printStackTrace ();} Z
`F[0- Fo3*PcUv *~8F.cx } O?vh]o X;LYGJ{Xk =z}PR1X! public static void main(String[] args) S257+ K9 { Z=%
j|xE_ new TestMethod(); ~~yng-3)1 } uzp\V
39 } L@Rgiq|v-| 点击下载更多相关资料
|