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/* :w:hqe|_ **SiteFileFetch.java -("sp */ kUUeyq package NetFox; v4=9T<[ import java.io.*; ComVY4, import java.net.*; qd(C%Wk oOUL<ihe? ,1EyT> public class SiteFileFetch extends Thread { Eb{Zm<TP :^j`wd1
h A?<R9A SiteInfoBean siteInfoBean = null; //文件信息Bean v^0D long[] nStartPos; //开始位置 ;*5$xs&=_Z long[] nEndPos; //结束位置 w,> ceu/ FileSplitterFetch[] fileSplitterFetch; //子线程对象 xDG8C39qrs long nFileLength; //文件长度 gUwg\>UC boolean bFirst = true; //是否第一次取文件 zMxHJNQ\D boolean bStop = false; //停止标志 wZ6LiYiHl File tmpFile; //文件下载的临时信息 |jH-
bm DataOutputStream output; //输出到文件的输出流 sxinA8
O@6iG //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) P!3)-apP\ public SiteFileFetch(SiteInfoBean bean) throws IOException c+,F)i^` { AX,V*
s siteInfoBean = bean; "bZ%1)+ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); fmrd 7*MW tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 5RXZ$/ if(tmpFile.exists ()) @(M-ZO!D { ^0py bFirst = false; +XCLdf}dC read_nPos(); 9z6-HZG'~< } I },.U&r else k#X~+}N^ { f]Z%,'1^ nStartPos = new long[bean.getNSplitter()]; n4\UoKq nEndPos = new long[bean.getNSplitter()]; L"{qF<@V7& } o.W:R Ux O?5uCh$H Cl#PYB{1Y ~Gm<F .(+ } BC*62m o~<Xc l{ <+V) public void run() 7.mY@ { CAg~K[ //获得文件长度 {2 l35K= //分割文件 9oBK(Sf@^ //实例FileSplitterFetch 1c8Nr&Jl //启动FileSplitterFetch线程 MIma:N_c //等待子线程返回 UtPFkase try{ nX%b@cOXj if(bFirst) uqy&PS { =f0qih5.4 nFileLength = getFileSize(); NV\t%/ ? if(nFileLength == -1) -E{D'X { 5"5!\Zo System.err.println("File Length is not known!"); BV)oF2b: } !Q[j;f
else if(nFileLength == -2) y0s=yN_ { HXV4E\JA System.err.println("File is not access!"); &JMp)zaI[ } `R[cM; c2 else 'kU5 { w]L^)_'Th for(int i=0;i<nStartPos.length;i++) 3{c6)vR2 { =D-u".{ nStartPos = (long)(i*(nFileLength/nStartPos.length)); =T"R_3[NC } cG!\P: re for(int i=0;i<nEndPos.length-1;i++) R|&jvG=| { H.ha}0J nEndPos = nStartPos[i+1]; g{PEplk } E$O-\)wY0 nEndPos[nEndPos.length-1] = nFileLength; -YvnX0j+ } !UHWCJ<
<w } x -;tV=E} n vzk P{ by}C;eN //启动子线程 ~]f6@n fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Q$,AQyBlqc for(int i=0;i<nStartPos.length;i++) NJ]AxFG { `>ppDQaS)W fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), H!SFSgAu siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), - t#YL nStartPos,nEndPos,i); *G rYB6MT Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); V[DiN~H fileSplitterFetch.start(); B|WM;Y^ } _43'W{% // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :/A7Z<u, siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _(7f0p // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", w?#s)z4}g nEndPos = " + nFileLength); Cb}I-GtO // fileSplitterFetch[nPos.length-1].start(); ehTrjb3k
zSd!n Ww=^P{q\ //等待子线程结束 Gxh r0' //int count = 0; _v6x3 Z //是否结束while循环 TXL!5,
X_ boolean breakWhile = false; E P3Vz8^ jouA
]E Q DVk7ks while(!bStop) r7ebF JEf { bW-sTGjRD write_nPos(); |hl:!j.t Utility.sleep(500); vKO/hZBh breakWhile = true; sP:nTpTsC HPryq )z *Jwx,wF}4 for(int i=0;i<nStartPos.length;i++) ldFR%v>9 { zgNzdO/B if(!fileSplitterFetch.bDownOver) =;Q:z^S { 3xIelTf* breakWhile = false; /7N&4FrG break; }3O 0nab } qdnwaJ;& } {gz-w|7 if(breakWhile) 2A=q{7s break; ]?G|:Kx$y% xm Ns% V O\g"Yc //count++; sOJXloeO[6 //if(count>4) rnyXMt.q // siteStop(); ;rRV=$y } 38mC+%iC b#nI#!p' xyD2<?dGUb System.err.println("文件下载结束!"); $c{fPFe- } EVlj#~mV catch(Exception e){e.printStackTrace ();} AqiH1LAE } $GR
rT C! 9?iA~r|+ 5szJ.!( //获得文件长度 \
)WS^KR% public long getFileSize() $35C1" { F| jl=i int nFileLength = -1; riZ :#I try{ N7u|<
0[ URL url = new URL(siteInfoBean.getSSiteURL()); >[2; HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); jiejs* httpConnection.setRequestProperty("User-Agent","NetFox"); S6g_$Q7 ?$K.*])e YK\pV'&+ int responseCode=httpConnection.getResponseCode(); j1rR3)oP if(responseCode>=400) jp;]dyU { 4/ WKR3X processErrorCode(responseCode); /\{emE\] return -2; //-2 represent access is error ?9;CC]D } lc8g$Xw3 %*NED zy ff;~k?L String sHeader; P;`Awp?
jF-:e;- 9}wI@ for(int i=1;;i++) 43 vF(<r&f { ..kFn!5(g //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 5sANF9o! //Utility.log(in.readLine()); %:s+5*SKe sHeader=httpConnection.getHeaderFieldKey(i); *_Vv(H& if(sHeader!=null) C*}PL { W#+f2 RR if(sHeader.equals("Content-Length")) -2[#1S* { eEBo:Rc9 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ~N%+ZXh&E break; hFo29oN } A`#?Bj } eBH:_Ls_-^ else dF[|9%) break; hF{gN3v5 } d>?C?F } 9Fy'L#% catch(IOException e){e.printStackTrace ();} le'
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catch(Exception e){e.printStackTrace ();} OwT _W)$ A=0{}B# Y7zs)W8xTT Utility.log(nFileLength); Q6HghG A%2B3@1'q HC}vO0X4 return nFileLength; X}xf_3N
" } Wco2i m EDz;6Z*4N @ x .`z //保存下载信息(文件指针位置) E~#G_opQA private void write_nPos() ]
s^7c { Ab]tLz|Z try{ Dw/vXyZ output = new DataOutputStream(new FileOutputStream(tmpFile)); "F}dZ output.writeInt(nStartPos.length); R `Fgne$4 for(int i=0;i<nStartPos.length;i++) S6}_N/;6~ { 3"zPG~fY{ // output.writeLong(nPos); {?Nm"# output.writeLong(fileSplitterFetch.nStartPos); I-}ms output.writeLong(fileSplitterFetch.nEndPos); eKy!Pai } G pI4QzR output.close(); t
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WhP } %W8iC%~ catch(IOException e){e.printStackTrace ();} \gA<yz-;N catch(Exception e){e.printStackTrace ();}
?HRS* } ImG8v[Q
E qFK.ULgP` ht*(@MCr< //读取保存的下载信息(文件指针位置) \i/HHP[% private void read_nPos() ~&<t++ g { = try{ IA<>+NS DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); vQ*RrHG?c int nCount = input.readInt(); `kJ)E;v;3 nStartPos = new long[nCount]; Pjk2tf0j` nEndPos = new long[nCount]; ^8EW/$k for(int i=0;i<nStartPos.length;i++) xxyc^\$ { $cK}Tlq nStartPos = input.readLong(); A
yr, nEndPos = input.readLong(); p3Qls* } z bYv}q input.close(); 'iF%mnJ } f]#\&" catch(IOException e){e.printStackTrace ();} aPzn4}~/_ catch(Exception e){e.printStackTrace ();} u4IK7[= } p@kRo#~l $cIaLq A"ATtid private void processErrorCode(int nErrorCode) nhdZC@~E0 { .SjJG67OyA System.err.println("Error Code : " + nErrorCode); F \ls]luN } \wD/TLS} YTFU#F 26g]_Igq //停止文件下载 (_|*&au J public void siteStop() h$kz3r;b," { r&m49N,d bStop = true; _Iminet for(int i=0;i<nStartPos.length;i++) iMJt8sd fileSplitterFetch.splitterStop(); l99Lxgx= >zqaV@T 4/|x^Ky>G } Dc@ O Mr } sBB[u'h! //负责部分文件的抓取 ?tY+P`S **FileSplitterFetch.java u>)h */ ']TWWwj$ package NetFox;
P4q5#r u+Ix''Fn#% dkz%
Y] import java.io.*; uUg;v/: import java.net.*; #<< el;n L&DjNu`!9 Sc]K-]1(H public class FileSplitterFetch extends Thread { iq*im$9J F$)l8} 2PYn zAsl String sURL; //File URL &RYdSXM long nStartPos; //File Snippet Start Position V\Gs&> long nEndPos; //File Snippet End Position @JXpD8jn int nThreadID; //Thread's ID O\.^H/ boolean bDownOver = false; //Downing is over %h@1lsm1+ boolean bStop = false; //Stop identical F|eWHw?t FileAccessI fileAccessI = null; //File Access interface 'KA$^ KR#,6 sJ|pR=g)! public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ,Q56A#Y\ { @KK6Jy OTQ this.sURL = sURL; {/]2~! this.nStartPos = nStart; R|8vdZ%@ this.nEndPos = nEnd; 6&os`! nThreadID = id; {lWV H fileAccessI = new FileAccessI(sName,nStartPos);//定位 m;~} }~&vQ } a5pl/d vSR&>Q%X $KbZ4bB[Bo public void run() 4`Ud\Jm[s { ?OFa
Q while(nStartPos < nEndPos && !bStop) 3/`BK{ { (p{%]M 8In\Jo$|q> |-x-CSN try{ n"htx|v URL url = new URL(sURL); !CUl1L1DSi HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8{jXSCP# httpConnection.setRequestProperty("User-Agent","NetFox"); dhtH&:J<; String sProperty = "bytes="+nStartPos+"-"; Q4m>
3I httpConnection.setRequestProperty("RANGE",sProperty); 4j=3'Z| Utility.log(sProperty); M5h
r0R{ IFTNr2I 20V~?xs~ InputStream input = httpConnection.getInputStream(); = g{I`u //logResponseHead(httpConnection); %PYO9:n :s_>y_=g K>DN6{hnV; byte[] b = new byte[1024]; Cq!eAc int nRead; vHf)gi}O| while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) =$J(]KPv!? { 4CF;>b
f~ nStartPos += fileAccessI.write(b,0,nRead); Ncz4LKzt //if(nThreadID == 1) #@B"E2F // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =\< 7+nv } _li3cXE 'hjEd. h.X4x2(. Utility.log("Thread " + nThreadID + " is over!"); ML_VD*t9 bDownOver = true; euB 1}M //nPos = fileAccessI.write (b,0,nRead); H7X-\K 1w } -x+3nb|. catch(Exception e){e.printStackTrace ();} G$>?UQ[ } ww^\_KGu7 } A0Mjk wtek5C^ \Osu1]Jn> //打印回应的头信息 R'v~:wNTNs public void logResponseHead(HttpURLConnection con) syR"p,3EC { RE;A0E_3 for(int i=1;;i++) "#iJ/vy { _p*9LsN$L String header=con.getHeaderFieldKey(i); I1fpX | if(header!=null) j+_fHADq //responseHeaders.put(header,httpConnection.getHeaderField(header)); BX?DI-o^h Utility.log(header+" : "+con.getHeaderField(header)); 'GJB9i+a^ else *&I>3;~%^} break; rRq60A } ~</FF'Xz } ]j3> =Jb; "io O_ bp?5GU&Uy public void splitterStop() X`D2w: { h-P|O6@Ki bStop = true; |'?vlUCd } `NW/Z/_ V.*TOU{{xh BD
C DQ } E@SFK=` =K`.$R \1<'XVS /* L0wT :x* **FileAccess.java ^o3,YH *//文件访问(定位,写) aO&U=! package NetFox; 5%Qxx\q import java.io.*; *2zp>(% BmX'%5ho ?),b902C public class FileAccessI implements Serializable{ |Vpp'ipr ~qghw@Q~ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 t*(bF[? RandomAccessFile oSavedFile; 0zr27ko long nPos; L"bJ#0m |owr?tC a4,V(Hlm public FileAccessI() throws IOException i|^Q{3?o# { .C^P6S2oJ this("",0); huC{SzXM } +Ryj82;59z G WIsT\J ;b {#$#`= public FileAccessI(String sName,long nPos) throws IOException ]pR?/3 { arL>{mj oSavedFile = new RandomAccessFile(sName,"rw"); 7H3v[ f^Q this.nPos = nPos; [inlxJD oSavedFile.seek(nPos); >-MnB } WN'AQ~qA $@z77td3 U?0|2hR~ public synchronized int write(byte[] b,int nStart,int nLen) H+[?{+"#@l { 1 (<n^\J( int n = -1; eI1zRoIl- try{ A%8
Q}s$<s oSavedFile.write(b,nStart,nLen); +_]Ui| l n = nLen; 7%^G]AFi } JH.XZM& catch(IOException e) P)Adb~r { h[remR#3\ e.printStackTrace (); PF~@@j } kk=n&M ZsP ^< k$kE5kh,S return n; HgQjw! } !eyLh&]5 mo| D 5T;LWS } ahl|N` gnp.!- t=P+m /* qd0G sr}j **SiteInfoBean.java /!H24[tnk1 */ y[ dBmTY package NetFox; Orq/38:4G u nv:sV#b JG!B3^qB public class SiteInfoBean { CPJ<A,V doanTF4Da |=}+%>y_ private String sSiteURL; //Site's URL &ivU4rEG private String sFilePath; //Saved File's Path >#G%2Vp private String sFileName; //Saved File's Name KtQs uL% private int nSplitter; //Count of Splited Downloading File IO\1nB$0nb N'2?Z b J||g(+H> public SiteInfoBean() HJl?@&l/ {//nSplitter的缺省值为5 5sY$ //default value of nSplitter is 5 ]KFh 1 this("","","",5); [5P-K{Ko } e)e(f"t6Q qR@ESJ_ Lvf<g}?4 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Z[@ i/. I { t utk*|S sSiteURL= sURL; !4p{b f sFilePath = sPath; J*zzjtY( 1 sFileName = sName; Al
yJ!f"Y this.nSplitter = nSpiltter; l+Wux$6U $J6
.0O pz^S3fy } 1clzDwW \n_7+[=E ='"Yj public String getSSiteURL() L0![SE> { [Hx}#Kds return sSiteURL; !RKuEg4hQ } 3/RwCtc ;#Po}8Y= ?T/4
= public void setSSiteURL(String value) k4sV6f { ^2'Y=g> sSiteURL = value; Y][12{I{ } LW<LgN"L- V6merT79 ci;2XLAM public String getSFilePath() mP^ B2"|q { #eJfwc1JY return sFilePath; ?xaUWD } 4u5j
7`O ]O|>nTa 0/QDfA? public void setSFilePath(String value) >v,X:B?+FL { od!44p] sFilePath = value; 7@{%S~TN } ^JY {< !{l% 3'2 ?c8~VQaQ public String getSFileName() _f!ko<52 { I[%IW4jJ return sFileName; EP38Ho=[ } O8Mypv/C
m}yu4 QbdXt%gZe public void setSFileName(String value) dg|+?M^9` { g+o$&'\ sFileName = value; ho>@ $9 } !8p>4 |VM xI<l1@ 'wPX.h? public int getNSplitter() ^$oa`B^2JM { Apu-9|oP return nSplitter; ]:f.=" } ^?e[$} fS}Eu4Xe E]q>ggeNH public void setNSplitter(int nCount) S:!5|o| { Cx;it/8+ nSplitter = nCount; }e7/F[c.U } TD\TVK3P } lz=DGm
g;Fdm5Q |e8A)xM]wC /* 6ud?US( **Utility.java 5^uX!_r` */ _U}|Le@ e package NetFox; 5{-Hg[+9 M0m%S:2 A]"6/Lr9P public class Utility { ,GWa3.&.d v_5O*F7) )-+tN>Bb public Utility() 7'+`vt#E { kYS#P(1 /;_$:`|/ gB#!g@ } ${Lrj}93 ~/4j&IG //线程睡眠 ~JZLWTEe public static void sleep(int nSecond) eZ)
|m { CMC p7-v try{ GGHMpQ Thread.sleep(nSecond); |%4nU#GoB } h(2{+Y+ catch(Exception e) Gad&3M0r { []\-*{^r e.printStackTrace (); ]UOzz1 } MeD/)T{ G~ } ft8 ++2a xRl //日志 pz2E+o public static void log(String sMsg) }Bh\N5G% { '1!%yKc0 System.err.println(sMsg); S%p,.0_ } ^p4`o> \R&ZWJKh >CCy2W^W public static void log(int sMsg) s,J\nbj0h { f[zKA{R System.err.println(sMsg); ,9|7{j|u } v'L"sgW6I } d;%~\+)x4 (|W6p%( lS;S:-
-F /* \U]<HEc^ **TestMethod.java fpNq */ El`G<esX package NetFox; }`whg8 fZ 'o]}vyz; l7ES*==&@0 public class TestMethod { cmf*BkS O,@QGUoA ,vi6<C\ public TestMethod() <c`,fd8 { ///xx/weblogic60b2_win.exe _z^&zuO try{ ^CwS'/fdN SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); TFc/` //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 9MRe? SiteFileFetch fileFetch = new SiteFileFetch(bean); {KqW<X6Hp fileFetch.start(); ld~*w } 5k_%%><: q catch(Exception e){e.printStackTrace ();} IL8&MA% C/"Wh=h6 ORo +]9)Yv } tchpO3u, MoC/xF& NnZ_x>R public static void main(String[] args) :v-,-3AG { mX
SLH' new TestMethod(); bxz6
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