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/* k q]E@tE*3 **SiteFileFetch.java e`U
6JzC */ ~NPhVlT package NetFox; 6`iYIXnz import java.io.*; *zN~x(0{E import java.net.*; U}4I29M WUjRnzVM }Xk_
xQVt{ public class SiteFileFetch extends Thread { Sk"hqF.2 ~QlF(@ue #AP;GoIf"j SiteInfoBean siteInfoBean = null; //文件信息Bean ',!jYh}Uxk long[] nStartPos; //开始位置 OiXO<1'$ long[] nEndPos; //结束位置 vE8BB$D FileSplitterFetch[] fileSplitterFetch; //子线程对象 7QnWw0 long nFileLength; //文件长度 mA$86 X_ boolean bFirst = true; //是否第一次取文件 1=5HQ~|[TO boolean bStop = false; //停止标志 Z9NND File tmpFile; //文件下载的临时信息 3bXfR,U DataOutputStream output; //输出到文件的输出流 7.Z- h)fsLzn]Tf //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x#&_/oqAk public SiteFileFetch(SiteInfoBean bean) throws IOException jjQDw=6 { q9p31b3 siteInfoBean = bean; TBrwir //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); D
vvi)/< tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 4X*U~} if(tmpFile.exists ()) }apno|W& { k H<C9z2= bFirst = false; 9_d#F'#F read_nPos(); U,p'<rmS } [0105l5 else ~4Gc~ " { jUKMDlH nStartPos = new long[bean.getNSplitter()]; '(C+qwdRv nEndPos = new long[bean.getNSplitter()]; AX%}ip[PC } ,52Lm=n Tn/Z s| RM,aG}6M)M tFc<f7k } ]LZ#[xnM7 R) :Xs . ;]0d{ public void run() )+'=Zvgej= { M;b3-
i //获得文件长度 JFO,Q
-y\ //分割文件 1fsNQ!vQP //实例FileSplitterFetch =n,1* //启动FileSplitterFetch线程 !W8=\:D[ //等待子线程返回 szhSI try{ DZ\ '7%c if(bFirst) wu
eDedz\ { n{<}<SVY nFileLength = getFileSize(); 5,oLl {S' if(nFileLength == -1) A?lR[`'u\ { 3M+rFB}tS System.err.println("File Length is not known!"); &L5
)v\z } XEbVsw else if(nFileLength == -2) 0,)2\`99#k { mjg@c|rTG System.err.println("File is not access!");
]UEA"^ } %qo.n v else -`{W~yz { h!JyFc
for(int i=0;i<nStartPos.length;i++) _EP]|DTfr { ~Gmt,l!b nStartPos = (long)(i*(nFileLength/nStartPos.length)); spm)X-[1 } ,j`48S@ for(int i=0;i<nEndPos.length-1;i++) eGg6wd { B+~ /-3 nEndPos = nStartPos[i+1]; c1i:m'b_5 } 1$Q[%9 nEndPos[nEndPos.length-1] = nFileLength; %i/|}K } mRC3w(W } :<B_V< $z*"@ ,g}$u'A+d //启动子线程 j!!s>7IZ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 0wNlt#G;{ for(int i=0;i<nStartPos.length;i++) xg7KU& { =O"]e/CfO fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), u6?9#L( siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), *S.FM.r nStartPos,nEndPos,i); 8@LWg d Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); x:~XZX\mwH fileSplitterFetch.start(); Rvu5#_P } %Rf9KQ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 60{DR >S siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); cf$
hIB)Oi // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", /3rNX}tOMH nEndPos = " + nFileLength); 2jC:uk // fileSplitterFetch[nPos.length-1].start(); ogQfzk Z}0xK6 gsEcvkj* //等待子线程结束 LFxk.-{= //int count = 0; \ +sa[jK //是否结束while循环 ;A@DE@^5w boolean breakWhile = false; F.aG7 N0^SWA|S bri8o" while(!bStop) +aEm]=3 { $
-<(geI write_nPos(); ^yc8is'` Utility.sleep(500); )4qspy3 breakWhile = true; 0\Jeyb2dl "|dhmV[; ?)(/SZC0 for(int i=0;i<nStartPos.length;i++) ]o"E4Vht { )V>OND if(!fileSplitterFetch.bDownOver) |hi,]D^Kc { fVY I breakWhile = false; G8__6v~ break; SE' |||B } i}C%8}% } !e<2o2~. if(breakWhile) z8"1*V break; ReM]I<WuY v9r.w- :;hg :Q: //count++; [sk n9$ //if(count>4) ({C[RsY=6 // siteStop(); :7.k E } !lFNG:&` `i(b%$|^&Z @J5TDq @ System.err.println("文件下载结束!"); B=n90XO | } j #:
ARb catch(Exception e){e.printStackTrace ();} p6BDhT(RS } xFThs,w Z8ivw\|M8 h
x5M)8#+ //获得文件长度 CYE[$*g6y public long getFileSize() x"C7NW[$ { R+K|K2" int nFileLength = -1; yF6AI@y try{ W/t,7lPFb URL url = new URL(siteInfoBean.getSSiteURL()); c u";rnj HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2
yANf httpConnection.setRequestProperty("User-Agent","NetFox"); :/5GHfyj 3 V ^5 4_ /({oN1X>i int responseCode=httpConnection.getResponseCode(); @XtrC|dkkE if(responseCode>=400) _{#K { y>E:]#F processErrorCode(responseCode); @73kry v return -2; //-2 represent access is error `kvIw,c. } {Y2J: x LVdR,'lS mejNa(D ^ String sHeader; PIo@B|W-SX =8*ru\L:hr m='}t \= for(int i=1;;i++) ']\SX*z? { t, /8U //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); +L'Cbv= " //Utility.log(in.readLine()); g)$KN,gGuO sHeader=httpConnection.getHeaderFieldKey(i); cU ?F D if(sHeader!=null) (X\]! 'A { :
KFK2yD if(sHeader.equals("Content-Length")) L?|}! { `w>D6K+ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); v,QvCozOz break; l/nBin&YGv } {`M\}(E } e&T-GL else RR+kjK? break; P/WGB~NH } @uV]7d"z( } M1NdlAAf catch(IOException e){e.printStackTrace ();} D~i 5E9s5 catch(Exception e){e.printStackTrace ();} !Z\Gv1 3`{
vx rloxM~7!,) Utility.log(nFileLength); j<BRaT GLZ*5kw NhNd+SCZ@ return nFileLength; VKYljY0# } b|Ge#o C_q2bI oO3^9?Z //保存下载信息(文件指针位置) svxjad@l/
private void write_nPos() ge?0>UU;~ { }|;j2'(R try{ CFW Hih output = new DataOutputStream(new FileOutputStream(tmpFile)); W"vkmk output.writeInt(nStartPos.length); >m!Z$m([J for(int i=0;i<nStartPos.length;i++) 0iR?r+| { 3[_WTwX0 // output.writeLong(nPos); PbS1`8|4 output.writeLong(fileSplitterFetch.nStartPos); *3={s"a.( output.writeLong(fileSplitterFetch.nEndPos); v_U/0
0 } &XI9%h9| output.close(); {2T u_2> } X|!@%wuGC catch(IOException e){e.printStackTrace ();} > vXJ9\ catch(Exception e){e.printStackTrace ();} [) >Yp-n } C}3a^j l4taD!WD/ jP}Ry=V/ //读取保存的下载信息(文件指针位置) + 0*\q private void read_nPos() I!9>"s12 { )[UYCx' try{ -W@nc
QL} DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); K+ M\E[1W int nCount = input.readInt(); N\. g+ W nStartPos = new long[nCount]; "'Gq4<&y nEndPos = new long[nCount]; F,VWi$Po\N for(int i=0;i<nStartPos.length;i++) \/SOpC { SD%3B!cpX nStartPos = input.readLong(); Fz<1xyc( nEndPos = input.readLong(); .9z}S=ZK } 1~E4]Ef:W input.close(); @mg5vt!$` } 2g5 4<G*e catch(IOException e){e.printStackTrace ();} V,c^Vqy catch(Exception e){e.printStackTrace ();} '?.']U,: $ } Ho(}_Q& I
H#CaD *>[q*SF private void processErrorCode(int nErrorCode) Z<AZO ^ { bYem0hzOe System.err.println("Error Code : " + nErrorCode); V(LfFO{^>? } ZR|s]' :?z@T[- u-jc8W`Zd //停止文件下载 B+R|fQ public void siteStop() Z]2z*XD { N`H`\+ bStop = true; <Tbl|9 for(int i=0;i<nStartPos.length;i++) p^w)@^f fileSplitterFetch.splitterStop(); rbv J~`!@! 3rN}iSF^ } L_:~{jV } &Y9%Y/Y //负责部分文件的抓取 %1GKN|7 **FileSplitterFetch.java p(4B"[ !S */ T.;U~< package NetFox; ?kV_!2U)'K Uh1UZ
r ';.y`{/
import java.io.*; }c=Y<Cdh
import java.net.*; \0;w7tdo g co;8e_ n,-*$~{ public class FileSplitterFetch extends Thread { Mkt_pr %M8Q6 6kR3[]:16v String sURL; //File URL o,J8n;"l long nStartPos; //File Snippet Start Position V^n=@CZT9C long nEndPos; //File Snippet End Position %)dp
a int nThreadID; //Thread's ID x+'Ea.^ boolean bDownOver = false; //Downing is over kDQE*o boolean bStop = false; //Stop identical !,b&e FileAccessI fileAccessI = null; //File Access interface MZX@Gi<S[ C~.\2D`zy cR55,DR,#W public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ih75C" { 5__B
M5| this.sURL = sURL; V}2[chbl this.nStartPos = nStart;
? uP5("c this.nEndPos = nEnd; i~<.@&vt nThreadID = id; &"Cy&[ fileAccessI = new FileAccessI(sName,nStartPos);//定位 x2b
t^!t. } Ag(JSVY \7$"i5 `GY]JVW public void run() } 21!b :a { cL#zE while(nStartPos < nEndPos && !bStop) OQg}E@LZ { 4 s9^%K\8{ Edcv>}PfE |?f~T"|> try{ T(cpU,Q URL url = new URL(sURL); %7\l+g, HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); O\]{6+$fm! httpConnection.setRequestProperty("User-Agent","NetFox"); &i`(y>\ String sProperty = "bytes="+nStartPos+"-"; wF6a*b@v httpConnection.setRequestProperty("RANGE",sProperty); #X{lV]Z Utility.log(sProperty); ,ag*
/ R Eo{E { VM^K1 InputStream input = httpConnection.getInputStream(); C\bJ_vl;' //logResponseHead(httpConnection); mB
bGj3u; mL;oR4{ ,]9p&xu byte[] b = new byte[1024]; 4/S3hH int nRead; 7g o Rj while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) u-.nR}DM_ { rT4q x2 u nStartPos += fileAccessI.write(b,0,nRead); g*4^HbVxt //if(nThreadID == 1) _IxYnm`pc // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !@T~m1L
eY } mpIR: Im mv$gL {Ov{O,c5 Utility.log("Thread " + nThreadID + " is over!"); &f)pU>Di bDownOver = true; XA69t2J~F //nPos = fileAccessI.write (b,0,nRead); Ne1W!0YLK } aE:$ N#|Qa catch(Exception e){e.printStackTrace ();} Wn2J]BH }
jEP'jib% } =6fJUy^M\ ,K&L/* UhU+vy6)/ //打印回应的头信息 -"2%+S{ public void logResponseHead(HttpURLConnection con) t|UM2h { n5fc_N/8O= for(int i=1;;i++) nU2w\(3| { 2j{T8F\] String header=con.getHeaderFieldKey(i); }^odUIj if(header!=null) ^Vc(oa&; //responseHeaders.put(header,httpConnection.getHeaderField(header)); $c+:dO|Fb Utility.log(header+" : "+con.getHeaderField(header)); A*]sN8 else JRtDjZ4> break; LTb#1JC } iWe'|Br } ue!4By8T N{Pa&/V 7<?Aou public void splitterStop() S[&yO-=p6 { $TAsb>W!( bStop = true; /|v
b)J } a72L%oJ m'ZxmsFo ehMpo BL } 4/2@^\?i) 99~-TiU bl|)/)6o /* PvxU. **FileAccess.java mMK 93Ng"& *//文件访问(定位,写) VZk;{ package NetFox; pWoeF=+y]W import java.io.*; JY D\VaW ZRa~miKyM .SWn/Kk
public class FileAccessI implements Serializable{ @.QuIm8, QT(]S>--n //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 !]z4'* )W RandomAccessFile oSavedFile; O&dh< long nPos; ]4\6_J& %w3tzE1Hq 7U&<{U< public FileAccessI() throws IOException `]/0&S { q-+_Y `_\ this("",0); ]^QO^{Sz } mw\Pv| 4%SA%]a L1 }$3pS:_N~ public FileAccessI(String sName,long nPos) throws IOException \LM{.gzT { .;:dG oSavedFile = new RandomAccessFile(sName,"rw"); J
p0j this.nPos = nPos; T&E'MB oSavedFile.seek(nPos); &w^:nVgl } #<-%% *Oh]I|? 0 \o5+ public synchronized int write(byte[] b,int nStart,int nLen) qcBamf { *OY
Nx4 k int n = -1; (Ii+}Mfp try{ e{ZS"e`! oSavedFile.write(b,nStart,nLen); ^8g<>,$ n = nLen; <7MxI@\ } :*tFW~<*b catch(IOException e) !WD^To { A=wh&X e.printStackTrace (); msZ3%L } ~8lB#NuN m{rsjdnA #\3X;{ return n; ev5m(wR } 0(^N $
3.Y2&$T Y0o{@)Y: } eqU y> 7<93n`byM (S63:q&g /* :CXm@yF~4= **SiteInfoBean.java f(c#1AJE53 */ mqQC`Aqx: package NetFox; @dhnpR:L A+"'8%o9} Es1T{<G|w public class SiteInfoBean { *HQ>tvUh zi+NQOhR "Q1oSpF private String sSiteURL; //Site's URL W`jKe-jF private String sFilePath; //Saved File's Path zm=|#f private String sFileName; //Saved File's Name 9f3rMPVh( private int nSplitter; //Count of Splited Downloading File +!-U+W !<5Wi)* 4 :M}Vz- public SiteInfoBean() TmLfH
d {//nSplitter的缺省值为5 1Zgv+. //default value of nSplitter is 5 2-@z-XKn this("","","",5); F@-8J?Hl: } 4{ED~w| mFuHZ)iQG i[n3ILn public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) }^*m0`H { xyi4U(; sSiteURL= sURL; /}3I:aJwb sFilePath = sPath; >u?a#5R:m sFileName = sName; b}m@2DR'|m this.nSplitter = nSpiltter; f/^T:F6 ,egbU(:l ~PedR=Y0n } i$XT Qr0K= u
236a\: 3^Z@fC public String getSSiteURL() R"O,2+@<. { Ev1gzHd!i return sSiteURL; mS
&^xWPV } 8}|!p> l }]"X@&G [}?E,1Q3 public void setSSiteURL(String value) Lz`_&&6 { "V<7X%LIX sSiteURL = value; _16r8r$V } D#d
\1g 'TDp%s*; L=kETJ:g public String getSFilePath() $`"$ZI6[ { d5lD! return sFilePath; K5(:0Q.5y } uP2Wy3`V KzLkT7,y+ #}C6}}; public void setSFilePath(String value) \m~Oaf;$ { H:,Hr_;nC sFilePath = value; FLaj|Z~#) } W$Z8AZ{E .-.b:gdO( CWS]821; public String getSFileName() cjf_,x { LTnbBh*mc return sFileName; G5!!^p~ } }ZfdjF8N! +Sg+% 8T UkM#uKr: public void setSFileName(String value) r.v.y[u { He LW* sFileName = value; Ap!i-E,"J } !w:pb7+G E#c9n%E\sz D]+@pKb public int getNSplitter() rVDOco+w { 2mfG:^^c return nSplitter; x3 01uf[ } (kSb74*g Vu Ey`c 1cd3m public void setNSplitter(int nCount) FdS'0#$ { jluv}*If nSplitter = nCount; O2oF\E_6 } Twpk@2=l } '$q3 Ze q
7hoI] u Uh6/=y /* MUMB\K*$ **Utility.java F2dwT */ !>6`+$=U package NetFox; ]|B_3*A p}|<EL}Z9 H.)J?3 public class Utility { G PL^!_ G(#EW+ !r9~K^EI public Utility() 3tCT"UvTD { v'SqH,=d Cuo"6, M -5,+gakSk } sJm v{wM 6Bn}W ? //线程睡眠 Dx.hM[ public static void sleep(int nSecond) DN|+d{^lN { 1A N)% try{ NX?6
(lO, Thread.sleep(nSecond); dXDuO } Q VWVZ >l catch(Exception e) -z>m]YDH { SHqz&2u e.printStackTrace (); N`7+]T } /n3S E0Y } \d
QRQL{LL qmq#(%Z <W //日志 #kAk
d-QY6 public static void log(String sMsg) ?)e6:T( { 'o1lJ?~kH System.err.println(sMsg); z"V`8D } d@
tD0s 1c:/c|shQ_ /B5rWJ2AS public static void log(int sMsg) 2o~UA\:+= { e(jD[q System.err.println(sMsg); "_ON0._(/ } Ob|v$C } 9zaSA,} 7lG,.W| z<8WN[fB /* 6V-JyTcxGI **TestMethod.java ;:P}s4p */ 3+V.9TL'a package NetFox; UZu.B!4 .wkW<F7 p}q]GJ public class TestMethod { vJ uL+'[i T_<: h]k1vp)Q y public TestMethod() ^6 \@$ { ///xx/weblogic60b2_win.exe Uk4G9}I try{ x6
h53R SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); M(W-\L //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); m<|fdS'@ SiteFileFetch fileFetch = new SiteFileFetch(bean); `6o5[2V fileFetch.start(); R5fZ}C7 } sb</-']a catch(Exception e){e.printStackTrace ();} i[PksT#p 1"U.-I@ pYX!l:hk } b&.3u ls6 *m`F-J6U g3\13< public static void main(String[] args) -@/!u9l { r1.OLn?C new TestMethod(); O
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