-
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
|
/* 9v2(cpZ **SiteFileFetch.java .Iret: */ !agtgS$qII package NetFox; /\B[lRn import java.io.*; gUq)M import java.net.*; >5|;8v-r
x#
&ZGFr~ d{LQr}_o$$ public class SiteFileFetch extends Thread { rH<iUiA?O $CYB&|d .$,.w__m~ SiteInfoBean siteInfoBean = null; //文件信息Bean !Ci\Zg long[] nStartPos; //开始位置 [!v|
M long[] nEndPos; //结束位置 cLD-,v;c FileSplitterFetch[] fileSplitterFetch; //子线程对象 i%R2#F7I long nFileLength; //文件长度 :8<\]}J boolean bFirst = true; //是否第一次取文件 U.@j!UrZ boolean bStop = false; //停止标志 yfD)|lK File tmpFile; //文件下载的临时信息 G2x5% ` DataOutputStream output; //输出到文件的输出流
xedbr sN
`NZyG //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) bof{R{3q public SiteFileFetch(SiteInfoBean bean) throws IOException cP~?Iz8nD { 1jhGshhp siteInfoBean = bean; 1K ;i/ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); |F'k5Lh tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 1wqsGad+; if(tmpFile.exists ()) |5}~n"R5 { r|WoM39bp bFirst = false; 0*.>
>rI read_nPos(); N!e?K=}tL } Dl#%tYL+3h else Odo"S;) { -;?5<>zZ nStartPos = new long[bean.getNSplitter()]; w]{NaNIeq1 nEndPos = new long[bean.getNSplitter()]; FB0y } I 2!0,1Q h4GR:` 2Q,8@2w; n+EK}=DK } ?CQ\94kO oR=^NEJv Ass8c]H@ public void run() fQ&:1ec { 3}H"(5dL}z //获得文件长度 FJN,er~T[ //分割文件 !0g+} //实例FileSplitterFetch kd9GHN;7 //启动FileSplitterFetch线程 Ge|& H]W //等待子线程返回 RPvOup try{ !@_( W if(bFirst) jG3}V3|. { at/v.U|F nFileLength = getFileSize(); "=unDpq] if(nFileLength == -1) lxRzyx { FRicHs n System.err.println("File Length is not known!"); ;n*N9-|. } O/IW.t else if(nFileLength == -2) H>-?/H { {V!Jj6n System.err.println("File is not access!"); ({cgak } "mAVkq~ else m<BL/7 { ,uD>.-> for(int i=0;i<nStartPos.length;i++) 2&W(@wT$ { c?0uv2*Yh nStartPos = (long)(i*(nFileLength/nStartPos.length)); 3986;>v } yiUJ!m for(int i=0;i<nEndPos.length-1;i++) 2O|o%`? { FxKb nEndPos = nStartPos[i+1]; G6zFCgFJ^y } gz[Ng> D+ nEndPos[nEndPos.length-1] = nFileLength; [|2uu."$ } @NXGVmY1} } BEM+FG 'nNw Y.?|[x0Wh //启动子线程 XHO}(!l\ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; _9Kdcoh for(int i=0;i<nStartPos.length;i++) hnM|=[wM { ]t|KFk!) fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), oy'Q#! siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), -/aDq?<< nStartPos,nEndPos,i); /h0<0b?i Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); kRgyvA,*; fileSplitterFetch.start(); %HuQc^ } _[V.%k // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Uq/(xh,t5 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 4];Qpln // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", x#e(&OjN7 nEndPos = " + nFileLength); Y9m'RFZr // fileSplitterFetch[nPos.length-1].start(); J-fU,*Bk c7IgndVAV sHe:h XG' //等待子线程结束 '?Q [.{< //int count = 0; &_&])V)<\S //是否结束while循环 Ifu$p]~z$ boolean breakWhile = false; Jug1Va<^c ~Gc+naE> J1"u,H F*( while(!bStop) "2CiW6X[M { !+ IxPn write_nPos(); U<eVLfSij Utility.sleep(500); Y[;Pl$ breakWhile = true; +I2P{7 pM\)f K+H?,I for(int i=0;i<nStartPos.length;i++) Z>a_vC { b]mRn{r? if(!fileSplitterFetch.bDownOver) DB_
x { kT UQ8U breakWhile = false; 9U58# break; C^r 3r6 } +U^dllL7 } "G|Gyc if(breakWhile) 2?ZHWS>U break; oC U8;z gsc*![N "twV3R //count++; @?K(+BGi //if(count>4) Bl' // siteStop(); v>g1\yIw } Y_%\kM?7 AY0o0\6cw f9JD_hhP' System.err.println("文件下载结束!"); s.KJYP } ]&VD$Z984r catch(Exception e){e.printStackTrace ();} [_qBp:_j?s } Z|d_G} ]-)qL[Q
W1y,.6 //获得文件长度 R]/F{Xs public long getFileSize() ^k^%w/fo { .4F(Y_c int nFileLength = -1; d"5:/Mo try{ nI.#A URL url = new URL(siteInfoBean.getSSiteURL()); rN{&$+"2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #>~$`Sg httpConnection.setRequestProperty("User-Agent","NetFox"); h&yaug,. Y*f7& '[ 1&QI1fvx int responseCode=httpConnection.getResponseCode(); % 9BC%w]y if(responseCode>=400) \I,<G7!0 { Qkqn~> processErrorCode(responseCode); V* fDvr0 return -2; //-2 represent access is error Dw[w%uz } h+.^8fPR V85a{OBm,8 tq@<8? String sHeader; LiQs;$V IwFg1\> ffm19 B= for(int i=1;;i++) 3=dGz^Zdv: { RPaB4> //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); m^T$H_*; //Utility.log(in.readLine()); o|alL- sHeader=httpConnection.getHeaderFieldKey(i); Cj5M if(sHeader!=null) jKI+-s { QE)g==d if(sHeader.equals("Content-Length")) .1|'9@]lj4 { LAf!y"A# nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); [Bpgb57En break; r-Z' } )_.@M '? } h{<^?= else S~/iHXm break; 1Q?hskL } %F&j B } g:;v] catch(IOException e){e.printStackTrace ();} ,{8~TVO catch(Exception e){e.printStackTrace ();} 9KXp0Q?-$ .Ji
r<"*< P$]Vb'Fz Utility.log(nFileLength); oi"Bf7{ z0g]nYN% 5/P?@`/eT return nFileLength; Y60ld7H } 30<dEoF "-<u.$fE o{UwUMw5` //保存下载信息(文件指针位置) 3O#7OL68v private void write_nPos() 4sZ^:h,1 { >454Yir0Mk try{ &.(ZO] output = new DataOutputStream(new FileOutputStream(tmpFile)); %Si3t2W/ output.writeInt(nStartPos.length); ~01rc for(int i=0;i<nStartPos.length;i++) KM0#M'dXy { HNU[W8mg8 // output.writeLong(nPos); c}v:X
Slh7 output.writeLong(fileSplitterFetch.nStartPos); S8"X7\d{ output.writeLong(fileSplitterFetch.nEndPos); >%[(C*Cks } ?m?e2{]u, output.close(); %WCpn<) } |UR.7rOV catch(IOException e){e.printStackTrace ();} o"n^zG catch(Exception e){e.printStackTrace ();} 8`u#tl( } 0^["&K/ YuPgsJ[m <o?qpW$,> //读取保存的下载信息(文件指针位置) YT:<AJm private void read_nPos() qU2>V { m"x~Fjvd try{ %],.?TS2V DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); z9dVT' int nCount = input.readInt(); E>'pMw nStartPos = new long[nCount]; "n]B~D nEndPos = new long[nCount]; %&gx@ \v for(int i=0;i<nStartPos.length;i++) wEDU*}~ { -h.YQC` nStartPos = input.readLong(); ARU,Wtj# nEndPos = input.readLong(); e2B~j3-?z } C|!E'8Rw input.close(); >Q+EqT } 89 fT?tT catch(IOException e){e.printStackTrace ();} ]L&_R^ catch(Exception e){e.printStackTrace ();} bQ
.y,+ } lsio\ $ ,cC4d` F=P|vYL&& private void processErrorCode(int nErrorCode) 7d4RtdI { orHVL 2
KK System.err.println("Error Code : " + nErrorCode);
w$B7..r } ;[9cj&7C< ^?J:eB! 1km=9[;w' //停止文件下载 ;H\,w/E9 public void siteStop() #d|.BxH { 0IA
'8_K bStop = true; v<2+yZ M for(int i=0;i<nStartPos.length;i++) o9eK7*D fileSplitterFetch.splitterStop(); K}Z'!+<U KqtI^qC8 R9#Z=f, } r`7`f xe } m]DjIs*@%h //负责部分文件的抓取 Rwy:.)7B$q **FileSplitterFetch.java fp>o ^+VB */ {H>iL package NetFox; =lDmP|^ TR%?U/_4;r +ZZiZ&y import java.io.*; |
c8u import java.net.*; CyXcA;H,. ^WD[>E~ mU\$piei public class FileSplitterFetch extends Thread { r% B5@+{so uP*>-s'm "?S#vUS+ 2 String sURL; //File URL f O(.I long nStartPos; //File Snippet Start Position pxY5S}@ long nEndPos; //File Snippet End Position T:}Ed_m}q int nThreadID; //Thread's ID 1MV^~I8Dd boolean bDownOver = false; //Downing is over G3OQbqn boolean bStop = false; //Stop identical 9X*q^u FileAccessI fileAccessI = null; //File Access interface ix$+NM<n *aT!|; `\.n_nM public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 0`qq"j[6a { P4N{lQ.> this.sURL = sURL; !.w S+ this.nStartPos = nStart; 6U""TR! this.nEndPos = nEnd; qBwqxxTc nThreadID = id; \+>b W( fileAccessI = new FileAccessI(sName,nStartPos);//定位 4l3N#U0Q } twN(]w}Ps| j`tUx#
h em W#ZX public void run() TLV)mCZ { <]!IC]+ while(nStartPos < nEndPos && !bStop) 8vP d~te { U>I#f 9B%"7MVn je{5iIr3/ try{ #pVk%5N URL url = new URL(sURL); mC93
&0 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $jntT(V httpConnection.setRequestProperty("User-Agent","NetFox"); ,Y5+UzE@ String sProperty = "bytes="+nStartPos+"-"; TZ*ib~ httpConnection.setRequestProperty("RANGE",sProperty); }=L
>u>cP Utility.log(sProperty); uC}YKT>V7 o1g[(zky +5HO T{wj InputStream input = httpConnection.getInputStream(); `kz_q/K //logResponseHead(httpConnection); !nYAyjf AzQ}}A;TSx k&?QeXW byte[] b = new byte[1024]; yT,UM^' int nRead; nv8,O=#s while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) +,KuYa{lu { +X- k)9 nStartPos += fileAccessI.write(b,0,nRead); \m\.+q] //if(nThreadID == 1) 1ii.nt1u // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); L NE]#8ue } {&4qknPd% 6Q>w\@lF oJR!0nQ Utility.log("Thread " + nThreadID + " is over!"); ?O3G bDownOver = true; ~/Ry=8 //nPos = fileAccessI.write (b,0,nRead); [NFAdE } ~/.&Z`ls catch(Exception e){e.printStackTrace ();} 0FW=8hFp, } " DFg" } N0Y! [n^___7 npe*A //打印回应的头信息 &=UzF public void logResponseHead(HttpURLConnection con) 2n7[Op { md2kZ.5u for(int i=1;;i++) }i[jJb`bY { %Wu8RG} String header=con.getHeaderFieldKey(i); MdKZH\z/ if(header!=null) :L?zk"0C //responseHeaders.put(header,httpConnection.getHeaderField(header)); q<UqGj7#
Utility.log(header+" : "+con.getHeaderField(header)); S
xg Yq else ^:q(ksssY break; [Q*kom : } IrVeP&KM+ } !bY{T#i)k N" 8o0> aL`pvsnF public void splitterStop() t3WlVUtq3 { L\B+j+~ bStop = true; LRI_s>7 } uu/MXID B\mdOTLQ KOxD%bX_ } OGVhb>LO1 T]myhNk A<Na,EC /* -OHG1"/ **FileAccess.java /U`"|3 *//文件访问(定位,写) ?|L)!LYx package NetFox; .xD-eWw3R import java.io.*; R'3i { 1 Twk zX| _]4cY%s
public class FileAccessI implements Serializable{ WV6vM()#!C 0<)8
?ow //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 V?gQ`( , RandomAccessFile oSavedFile; [ wROIvV long nPos; $M8'm1R9 B}jZ~/D} O{4m-; public FileAccessI() throws IOException Ug"B/UUFd { l5MxJ>?4%B this("",0); PFc02 w } q@\D5F%
> RWoiV10 x O)nS _I public FileAccessI(String sName,long nPos) throws IOException 7}#vANm {
78Gvc~j oSavedFile = new RandomAccessFile(sName,"rw"); olJ9Kfc0 this.nPos = nPos; $W2g2[+ oSavedFile.seek(nPos); JrQN-e! } s)N1@RBR e^FS/= w_-{$8| public synchronized int write(byte[] b,int nStart,int nLen) AV'> { jy*wj7fj1 int n = -1; Gg&jb= try{ QVP
$e`4 oSavedFile.write(b,nStart,nLen); CeZ5Ti?F n = nLen; QA%GK4F70 } J+;.t&5R catch(IOException e) fT@#S}t { k`&mHSk- e.printStackTrace (); (;n|>l?* } o0/03O Qh *|mW OUs2)H61 return n; !At _^hSqz } o#T,vu0s OVd"'|&6_ *=I#VN*_<. } ~/NA?E-c zso.?`85 -1{N#c/U /* 5|Y4GQVz **SiteInfoBean.java b+C>p2 % */ }Orc;_)r package NetFox; k&**f_b |%tR#!&[:g $0 li"+ public class SiteInfoBean { _#L
IG2d 4@bL` L) p5bH-km6 private String sSiteURL; //Site's URL &o8\ $A private String sFilePath; //Saved File's Path &
=frt3 private String sFileName; //Saved File's Name }ri"u;.R private int nSplitter; //Count of Splited Downloading File \Lc
pl-;? 5~sJ$5<, 'UB<;6wy public SiteInfoBean() eg}|%GG {//nSplitter的缺省值为5 1xx-}AIH# //default value of nSplitter is 5 T.{I~_ this("","","",5); tVe*J@i\$ } ,:#prT[P" "16==tLFE sz)3
z public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) F;z FKvn { ?>,aq>2O$ sSiteURL= sURL; fb#Ob0H sFilePath = sPath; {
~Cqb7 sFileName = sName; ,og@}gOMB
this.nSplitter = nSpiltter; |S4yol -aO3/Ik[q O,bj_CW x } 5!5P\o >2wjV"W? UdY9*k public String getSSiteURL() |mKd5[$ { 9]S}m[8k return sSiteURL; ;~@2YPj } X-ml0
=M[ <oR Nd3d iWvgCm4 public void setSSiteURL(String value) H,uOshR { O@ "6)/ sSiteURL = value; jeJGxfi i } O<+C$J| c XY!b=9 o30PI public String getSFilePath() v5*SoUOF { 1.';:/~( return sFilePath; ck Tnb } u?aq'
"t B0YY7od Fc nR}TE public void setSFilePath(String value) Ck[Z(=b$$: { }q~A( u sFilePath = value; Z|j8:Ohz } \V&ly/\
) L$jRg +ivz public String getSFileName() ir\ { %;zA_Wg return sFileName; .t["kaA } Gd'^vqo< E2\)>YF{P x^SE>dy ?z public void setSFileName(String value) !,1~:*: { iBc(
@EJ sFileName = value; q_W NN/w } 8..itty =g&0CFF < i=SX_#b^ public int getNSplitter() -nU_eDy { 1r8]EaI return nSplitter; H%/$Rqg } ^%_LA't'R >`lf1x a1GyI public void setNSplitter(int nCount) G&;W { eR3!P8t nSplitter = nCount; paF2{C)4 } vF*H5\ m<a } {)Gh~~57_W \(Hg_]>m tBf u{oC /* SR\#>Qwx_ **Utility.java Y[pGaiN: */ #ocT4 package NetFox; pM4 j=F 2/h Mx- "cti(0F-d public class Utility { LxG :?=O. zS?L3*u m@yaF:
R public Utility() K J~f ~2; { 8Y4YE(x5 @@! R
Iq! 45_zO# } bbnAF*7s8 AA@J~qd
u //线程睡眠 yyZjMnuD public static void sleep(int nSecond) 6vmkDL8{A8 { 8T1`TGSFC try{ L1aN"KGMF Thread.sleep(nSecond); 6v.*%E*P } {9)LHX7dN catch(Exception e) B\4SB { @jjp\ ~ e.printStackTrace (); |&C.P?q } [y'jz~9c } 9}": }! ^&.F! //日志 4}l,|7_&I public static void log(String sMsg) C~:aol i; { {)`5*sd System.err.println(sMsg); &hZcjdB } =n$,Vv4A lM?P8#3 Vg2s~ce{ public static void log(int sMsg) f)*}L? { /TpM#hkq/2 System.err.println(sMsg); _~6AUwM } in%+)`'nH7 } @P)GDB7A (z"Cwa@e >yT:eG /* =WN6Fj` **TestMethod.java JP[BSmhAV */ CjIkRa@!x package NetFox; Prr<:q a-O9[?G/x \ar.(J public class TestMethod { koaH31Q 0xH$!?{b +DVU"d public TestMethod()
#p\sw { ///xx/weblogic60b2_win.exe Z\NC+{7k] try{ VP|9Cm=Fg SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); PN<Y&/fB
//SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); o%CBSm] SiteFileFetch fileFetch = new SiteFileFetch(bean); 4(o0I~hpB? fileFetch.start(); Vrz<DB^-e } #E*jX-JT catch(Exception e){e.printStackTrace ();} d<!bE( O@Xl_QNxc! +-xA/nU.c } _Z2VS"yH $yOfqr CM7j^t public static void main(String[] args) `Ol*"F.+I { IDcu#Nz` new TestMethod(); (swP#t5S } dpTap<Noby } T|oz_c\e 点击下载更多相关资料
|