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/* ihBlP\C **SiteFileFetch.java ir-srVoXy */ Ey A} package NetFox; ie{9zO<d import java.io.*; kUUeyq import java.net.*; v4=9T<[ ComVY4, qd(C%Wk public class SiteFileFetch extends Thread { x6\EU=, jQ@z!GirT l_5]~N SiteInfoBean siteInfoBean = null; //文件信息Bean *=mtt^yZ long[] nStartPos; //开始位置 8-3]Bm! long[] nEndPos; //结束位置 xX*I.saK FileSplitterFetch[] fileSplitterFetch; //子线程对象 $3zs?Fd` long nFileLength; //文件长度 DX l3 boolean bFirst = true; //是否第一次取文件 j[k&O)A{C boolean bStop = false; //停止标志 A
'rfoA6 File tmpFile; //文件下载的临时信息 Z0s}65BR DataOutputStream output; //输出到文件的输出流 (4o_\& wP8Wx~Q= //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4\a K C%5 public SiteFileFetch(SiteInfoBean bean) throws IOException vmm#UjwF3 { B ZP}0 siteInfoBean = bean; pZUckQ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); n=WwB(}q tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); vx62u29m if(tmpFile.exists ()) |RS9N_eRt { +KgLe> -} bFirst = false; FY+0r67] read_nPos(); w4P?2-kB } !f[LFQD else FJomUVR . { rg64f'+Eug nStartPos = new long[bean.getNSplitter()]; Y|FF
;[ nEndPos = new long[bean.getNSplitter()]; q}p&<k } #kjN!S*= N]udZhkn AE? 0UVI / E}L%OvE } jU.z{(s d*$$E AP5[}$TT public void run() g|ewc'y { jI%v[]V //获得文件长度 ?XN=Er^ //分割文件 8'[g? //实例FileSplitterFetch }5
^2g!M //启动FileSplitterFetch线程 ZmeSm&
hQ_ //等待子线程返回 _rt+OzZ*L try{ hAX@|G. if(bFirst) jLo(Uf { kKL'rT6z nFileLength = getFileSize(); yIy'"BCxM if(nFileLength == -1) ~(bY-6z { S^(OjS System.err.println("File Length is not known!"); w#mna b@ } Q46^i7= else if(nFileLength == -2) 'ol8l Ia.P { W|h~&O System.err.println("File is not access!"); l\g>@b } G(gJtl else m_YXTwwx { ~SUrbRaY> for(int i=0;i<nStartPos.length;i++) z#9Tg"8] { EZnXS"z nStartPos = (long)(i*(nFileLength/nStartPos.length)); U|SF;T
. } n'*4zxAA for(int i=0;i<nEndPos.length-1;i++) S"hA@j { )tYu3*' nEndPos = nStartPos[i+1]; " E+V>V+ } 8 *o*?1. nEndPos[nEndPos.length-1] = nFileLength; GPV=(}z } &iKy } =2v/f_ z7TMg^9# Io_bS+ //启动子线程 hK^(Y fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; z5.Uv/n\1 for(int i=0;i<nStartPos.length;i++) v2eLH:6 { ayF+2(vch) fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ls[0X82F siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 3
UUOB. nStartPos,nEndPos,i); ;IyA"C(i Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); En!X}Owh fileSplitterFetch.start(); }@6Tcn1 } D!7-(3R // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), lRA=IRQ] siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); s1
mKz0q // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ((0nJJjz nEndPos = " + nFileLength); +/O3L=QyJ // fileSplitterFetch[nPos.length-1].start(); (U@Ks ) _EPfeh; 9r2l~zE //等待子线程结束 RvQa&r5l //int count = 0; @vyq?H$U;N //是否结束while循环 Y oDL/ boolean breakWhile = false; ri.}G phCItN; V[DiN~H while(!bStop) B|WM;Y^ { H@,h$$ write_nPos(); !ZxK+Xqx[ Utility.sleep(500); M02U,!di breakWhile = true; Q Ev7k F/%M`?m"ie oRkh>yj' for(int i=0;i<nStartPos.length;i++) U80h0t% { `:b*#@ if(!fileSplitterFetch.bDownOver) vJ,r}$H3 { 8MQb5( ! breakWhile = false; I9
(6 break; t;HM } LNNwy:_ ! } XXDLbT'J if(breakWhile) `;j@v8n$* break; HQkK8'\LP 7l(GBr jw5ldC>U //count++; 9{*$[%d1 //if(count>4) )kMF~S|H // siteStop(); 0RZ[]:( } Wn%b}{9Fb Cer&VMrQK <%4M\n System.err.println("文件下载结束!"); mNA=<O;i)' } ;yu#Bs catch(Exception e){e.printStackTrace ();} =;Q:z^S } 3xIelTf* /7N&4FrG n }kn|To~ //获得文件长度
/\.[@] public long getFileSize() \s?8}k { jK-b#h.gL int nFileLength = -1; C'7DG\pr try{ !S~0T!afF URL url = new URL(siteInfoBean.getSSiteURL()); kqkTz_r|H HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection ();
CK+t6Gp httpConnection.setRequestProperty("User-Agent","NetFox"); xlcL;e&^P 3\}>nE FUVp}>#U int responseCode=httpConnection.getResponseCode(); "5HSCl$r% if(responseCode>=400) oRZ98?Y\B
{ <k?pnBI_ processErrorCode(responseCode); vnN0o5 return -2; //-2 represent access is error [KL-T16 } QHXA?nBX d{J@A;da +)hxYLk&I String sHeader; uf^HDrr<L xp? YM35 ;kzjx%h for(int i=1;;i++) nIr:a|}[ { s*Nb=v.e9 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); bj6;>Ezp3( //Utility.log(in.readLine()); )+Y"4?z~ sHeader=httpConnection.getHeaderFieldKey(i); =PF2p'.o if(sHeader!=null) D7r&z? { B:Y F|k}T if(sHeader.equals("Content-Length")) W{%X1::q$ { >PzZt8e nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); g=/!Ry= break; "Zfm4Nx" } M5a&eO } @O`T|7v else _\.4ofK( break; 7`j%5%q } %M3L<2 } '}^qz#w catch(IOException e){e.printStackTrace ();} }Y^o("c(
catch(Exception e){e.printStackTrace ();} k Nvb>v WG&! VK 9W0*|!tQ,+ Utility.log(nFileLength); dS8ydG2 9
JhCSw-<) u`ryCZo#g return nFileLength; k;B[wEW@ } G6.lRaPu"m ?b:Pl{? +T&YYO8>5 //保存下载信息(文件指针位置) y/E:6w private void write_nPos() 7},oY""8 { i)$P1h try{ jGi{:} `lB output = new DataOutputStream(new FileOutputStream(tmpFile)); 0l3[?YtXc output.writeInt(nStartPos.length); $4mCtonP= for(int i=0;i<nStartPos.length;i++) $ q*a}d[Q { 80=LT-%# // output.writeLong(nPos); t`="2$NO output.writeLong(fileSplitterFetch.nStartPos); ^Ze(WE) output.writeLong(fileSplitterFetch.nEndPos); &~Y%0&F,& } qm"SN<2S* output.close(); ;mYZ@g%e } wfv\xHG catch(IOException e){e.printStackTrace ();} jEE!H/ catch(Exception e){e.printStackTrace ();} 8_E(.]U } h% KEg667 aAbA)'G ,]@K,|pC) //读取保存的下载信息(文件指针位置) ;Xf1BG r private void read_nPos() c`/VYgcTqB { soLW'8 try{ 9%Tqk"x? DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Zs]n0iwM'@ int nCount = input.readInt(); BT&R:_: nStartPos = new long[nCount]; gxhdxSm=2 nEndPos = new long[nCount]; -uxU[E for(int i=0;i<nStartPos.length;i++) R `Fgne$4 { Ph%{h" nStartPos = input.readLong(); *;)O'| nEndPos = input.readLong(); 3"zPG~fY{ } a{L&RRJ input.close(); Yj'9|4%+| } I-}ms catch(IOException e){e.printStackTrace ();} zrqI^i"c catch(Exception e){e.printStackTrace ();} S]ayH$w\Q } z{|0W!nHJ =tbfBK+ P6Y+ u private void processErrorCode(int nErrorCode) %W8iC%~ { o">~ObR System.err.println("Error Code : " + nErrorCode); Ka6u*:/ } I`(53LCqo 8{=|< OPzudO //停止文件下载 4D2U,Ds
public void siteStop() bf@g*~h@ { 78{9@\e"0 bStop = true; f=k#o2 for(int i=0;i<nStartPos.length;i++) n?nzm "g fileSplitterFetch.splitterStop(); v$0|\)E) .8Bu%Sf 9tU"+ } Pjk2tf0j` } ]E-3/r$_cO //负责部分文件的抓取 xxyc^\$ **FileSplitterFetch.java $cK}Tlq */ mZ2CGOR package NetFox; :{N*Z }] U#cGd\b #Lpw8b6 import java.io.*; [Q{\Ik import java.net.*; %VFoK-a .Sn{a}XP4 u4IK7[= public class FileSplitterFetch extends Thread { WKiP0~ QmjE\TcK/ tVO}{[U} String sURL; //File URL z
&Xl long nStartPos; //File Snippet Start Position $1"gFg long nEndPos; //File Snippet End Position u3#+fn_ int nThreadID; //Thread's ID <!g]q1 boolean bDownOver = false; //Downing is over \wD/TLS} boolean bStop = false; //Stop identical CV\^gTPmx FileAccessI fileAccessI = null; //File Access interface :>.{w$Ln% nKzm.D gt_ W03mdRW public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 1$eoW/8. { F$DA/ {.D this.sURL = sURL; bJetqF6n this.nStartPos = nStart; X5YOxMq this.nEndPos = nEnd; eM_;rM Cr} nThreadID = id; j&,Gv@ fileAccessI = new FileAccessI(sName,nStartPos);//定位 `@
YV } sBB[u'h! OA*O = 7tXy3-~biz public void run() 'bJGQ[c { Bkd$'7UT while(nStartPos < nEndPos && !bStop) w")
G:K { )-_^vB ~;3#MAG +Ps.HW#NY try{ WI4<2u; URL url = new URL(sURL); g%l ,a3" HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 'o6}g p) httpConnection.setRequestProperty("User-Agent","NetFox"); ",3v%$> String sProperty = "bytes="+nStartPos+"-"; 6w7; httpConnection.setRequestProperty("RANGE",sProperty); Nna.N U1 Utility.log(sProperty); /^AH/,p B;eka[xU 7JGc9K+Av InputStream input = httpConnection.getInputStream(); ppRmC,0f^ //logResponseHead(httpConnection); g5@JA^\vZT TL2E|@k1] @>Yd6C byte[] b = new byte[1024]; R1X'}#mU int nRead; sJ|pR=g)! while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) >9!J?HA { mFF4qbe nStartPos += fileAccessI.write(b,0,nRead); ^T!Zz"/: //if(nThreadID == 1) ,_u7@Ix // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
I8? } .p!
DVQ"a YK)m6zW5 gMI%!Y Utility.log("Thread " + nThreadID + " is over!"); "G
[Nb:,CR bDownOver = true; wHbkF#[:i //nPos = fileAccessI.write (b,0,nRead); w2.]
3QAZ } .qSDe+A catch(Exception e){e.printStackTrace ();} M!'d } _K9`o^g%PJ } ^AH[]sE_ gLX<>|)* <4;
nq~ //打印回应的头信息 04-_ K public void logResponseHead(HttpURLConnection con) HpEd$+Mz { L]H'$~xx* for(int i=1;;i++) g8N"-j&@ { ksC_F8Q+ String header=con.getHeaderFieldKey(i); aO(PVS|P if(header!=null) D+3?p //responseHeaders.put(header,httpConnection.getHeaderField(header)); xT"V9t[f Utility.log(header+" : "+con.getHeaderField(header)); QCW4gIp else D_d>A+ break; xRD+!3 } ;[::&qf } G`zNCx. Mpojabsh p
qz~9y~ public void splitterStop() GK}52,NM { M!J7Vj?Ps bStop = true; +
f67y } ri{*\LV*@ TI DgIK vW=-RTRH } Qp:I[:Lr; xn3 _ED i]r(VKX /* )$:1e)d **FileAccess.java 8X7??f1;Y *//文件访问(定位,写) -x+3nb|. package NetFox; G$>?UQ[ import java.io.*; ekhv.;N~ 3:x(2 A 23):OB>S` public class FileAccessI implements Serializable{ Q]K` p( ,,{;G'R| //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ~A=zjkm RandomAccessFile oSavedFile; W<)P@_+- long nPos; 2|>\A.I|= 9~Dg<wQ z?\it( public FileAccessI() throws IOException KQPu9f9 { @PvO;]]% this("",0); o^@"eG$, } 'GJB9i+a^ \C3I6Qx XYo,5- public FileAccessI(String sName,long nPos) throws IOException !kE5]<H\ { I_<VGU k oSavedFile = new RandomAccessFile(sName,"rw"); ]j3> =Jb; this.nPos = nPos; M-^I! C oSavedFile.seek(nPos); bp?5GU&Uy } ln82pQD2Y~ EH|+S <c}@lj-j public synchronized int write(byte[] b,int nStart,int nLen) KyyRHf5 { Y*c]C;%= int n = -1; uxf,95<g) try{ $.jGO! oSavedFile.write(b,nStart,nLen); X+;[Gc}(W n = nLen; ?Zb+xN KJ( } 3NpB1lgh&: catch(IOException e) q}P@}TE { DO:,PZX e.printStackTrace (); J9mK9{#q } <T_3s\ bTD?uX!^@ cT'Bp)a return n; XGSFG~d } 072C!F IA` voO$ 8TP$ ?8l } )=~&l={T vXDs/,`r :lB*km g /* x0<;Rm [u= **SiteInfoBean.java .#yg=t1C */ EsGu#lD2 package NetFox; O@Aazc5K '3>;8(sl XKjrS
9: public class SiteInfoBean { Ljy797{f K{ P-+( ,clbD4 private String sSiteURL; //Site's URL #kC~qux^ private String sFilePath; //Saved File's Path
~71U s private String sFileName; //Saved File's Name ,sL'T[tuiU private int nSplitter; //Count of Splited Downloading File Ce}`z
L 8Rj5~+5 ^@^8iZ public SiteInfoBean() ;\RVC7 {//nSplitter的缺省值为5 c[Fc3 //default value of nSplitter is 5 G)7U&B this("","","",5); 60+ zoL' } +_]Ui| l (]#^q8)]\9 JH.XZM& public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) P)Adb~r { h[remR#3\ sSiteURL= sURL; PF~@@j sFilePath = sPath; kk=n&M sFileName = sName; gQ\.|'% this.nSplitter = nSpiltter; GeR#B;{ ?Q]&;5o GY$Rkg6d } .RxT z9( ahl|N` gnp.!- public String getSSiteURL() t=P+m { c-$rB_t+ return sSiteURL; \}b2oiY } =z# trQ{ 9+1{a.JO :=NXwY3~M public void setSSiteURL(String value) JQM_96\ { Usf@kVQ sSiteURL = value; TUp\,T^2 } #<0Hvde B[uyr)$ x$LCLP#$H public String getSFilePath() }3*<sxw7< { -N' (2' return sFilePath; xGsOnY; } ~}_^$l8#-Q "^4*,41U #z(:n5$F public void setSFilePath(String value) %],BgLhS. { )O[8 D sFilePath = value; ?IGp?R^j" } x@
=p ~-'2jb*8 ']nIa7 public String getSFileName() !BoGSI { r8m}B#W7 return sFileName; Wg}KQ6
6 } >|SIqB<%: -m`|S q 8>C4w 5kF public void setSFileName(String value) H9T~7e+ { _A,_RM$Y sFileName = value; (>}1t!1 } \:m~
+o$<- c^W;p2^ q-z1ElrN7u public int getNSplitter() &y_t,8>5 { ?\\wLZ return nSplitter; 8-G )lyfj } Q6(~VvC- Y(,RJ&7 2O kID
WcM public void setNSplitter(int nCount) !~E/Rp { IOFXkpKR nSplitter = nCount; ]xvA2!)Q } I$"Z\c8; } mP^ B2"|q #eJfwc1JY ?xaUWD /* ;2kQ)Bq" **Utility.java kQ=bd{a6 */ 6/;YS[jX package NetFox; +C`!4v\n 1EV bGe%b nFni1cCD public class Utility { 7@{%S~TN ^JY {< !{l% 3'2 public Utility() ?c8~VQaQ { ^y>V-R/N g=td*S M{L<aYe } 0L>3i8' 7#)k-S!B //线程睡眠 H
r:*p6 public static void sleep(int nSecond) `ulQ C { `v?hL~ try{ rai'x/Ut}+ Thread.sleep(nSecond); qK'mF#n0# } s`x2Go catch(Exception e) e, sS. { #.Dl1L/ e.printStackTrace (); k)knyEUi } r8(oTx } 3Y P! B= C6gSj1 //日志 6O/ L~Z*t public static void log(String sMsg) ~;(\a@ _ { t M5(&cQ!d System.err.println(sMsg); z
4}"oQk:r } *$7^.eHfdd %ZRv+}z Z*Ffdh>*:& public static void log(int sMsg) G:e=9qTf { yl>^QMmo System.err.println(sMsg); -,
+o*BP } Yh]a4l0 } bAt!S ta&z lZt iB0r+IbR /* U,b80%k: **TestMethod.java vT5GUO{5 */ D?ic~-& package NetFox; z\v xDe^>(," rE*yT(:w public class TestMethod { @IL@|Srs8 y6am(ugE Q8HNST($? public TestMethod() 0^{Tq0Ri[ { ///xx/weblogic60b2_win.exe YEV;GFI1 try{ f.ua,,P. SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); q!&:y7O8 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); N_D=j6B SiteFileFetch fileFetch = new SiteFileFetch(bean); }*XF- U fileFetch.start(); mTH[*Y, } (l][_6Q catch(Exception e){e.printStackTrace ();} FBNi (D ]oix))'n i8<5|du&? } ="T}mc -)J*(7F(6^ TFbc@rfB public static void main(String[] args) n}NUe`E_h { tqA-X[^ new TestMethod(); oItC;T } :V8oWMY } :TrP3wV_ 点击下载更多相关资料
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