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/* Eb7qM.Q] & **SiteFileFetch.java hw:zak#j, */ 559znM= package NetFox; -n?}L#4%8 import java.io.*; hu%UEB import java.net.*;
n4h@{Xg (Eq0 |"cj \Azl6`Em public class SiteFileFetch extends Thread { x00"d$! %=xR$<D o$FqMRep
SiteInfoBean siteInfoBean = null; //文件信息Bean )q&=x2` long[] nStartPos; //开始位置 snT! 3t long[] nEndPos; //结束位置 +R@5e+auQ. FileSplitterFetch[] fileSplitterFetch; //子线程对象 K'+GK S7. long nFileLength; //文件长度 0K <@?cI boolean bFirst = true; //是否第一次取文件 ? "]fGp6y boolean bStop = false; //停止标志 Jtnuo]{R File tmpFile; //文件下载的临时信息 $?YRy_SI DataOutputStream output; //输出到文件的输出流 <03 @c s ?g+0S@{i $ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) UQgOtqL3 public SiteFileFetch(SiteInfoBean bean) throws IOException WBFG_]) { @%q0fj8b siteInfoBean = bean; lR\=] ]7I> //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); HaXlc8 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >:!TfuU^R if(tmpFile.exists ()) 8zS't2
u { AdxCP\S& bFirst = false; x]&V7Y read_nPos(); $`W.9 } WX&Man!f else WHk/Rg%< { axW3#3#` nStartPos = new long[bean.getNSplitter()]; x48Y#"' nEndPos = new long[bean.getNSplitter()]; L:"i,K#P } Fy3&Emu |#q 5#@, L']EYK5 ))^rk6 } 3
[: x#r $=uyZTYF)} T>2) YOx public void run() d?C8rkV' { qRT1W re
3 //获得文件长度 +/y 3]} //分割文件 M)C.bo{p //实例FileSplitterFetch D_ybgX?0: //启动FileSplitterFetch线程 Y
O;N9wu3f //等待子线程返回 Sd'!(M^k3 try{ /PH+K24v~ if(bFirst) 4vq,W_n.hQ { xwhH_[ nFileLength = getFileSize(); ) E.KB6 if(nFileLength == -1) /~)vma1< { t33/QW
r System.err.println("File Length is not known!"); uF_gfjR[m } 'L4@|c~x else if(nFileLength == -2) 9`yG[OA { t<mT=(zt* System.err.println("File is not access!"); t$^1A1Ef } Z[<rz6%cB else m:CiXM { i$gm/ZO for(int i=0;i<nStartPos.length;i++) 7Gd)=Q{uur { rK)aR nStartPos = (long)(i*(nFileLength/nStartPos.length)); NXb_hF } FZ'|z8Dm for(int i=0;i<nEndPos.length-1;i++) -Zc
6_]F| { aRPgo0,W1 nEndPos = nStartPos[i+1]; cf)2GoV>e } g
N76 nEndPos[nEndPos.length-1] = nFileLength; DP **pf%j } 12BTZ } H)S" `j ~?4'{Hc' `p1szZD& //启动子线程 ZnSDq_Uk fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; [<`K%1GQ for(int i=0;i<nStartPos.length;i++) H~UxVQLPp { {)nm
{IV, fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), G&$+8r siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Sd/?xyF1( nStartPos,nEndPos,i); n:d]Z2b Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); rM<|<6(L fileSplitterFetch.start(); u&Ts'j } |:Gz9u + // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .|`JS?L[ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); d1VNTB // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CnyCEIO- nEndPos = " + nFileLength); qDZ?iTHQq // fileSplitterFetch[nPos.length-1].start(); m?bd6'&FR YSERQo xp-.,^q\w //等待子线程结束 p.^glz >B //int count = 0; 3`[f<XaL //是否结束while循环 mpfc2>6Il. boolean breakWhile = false; '7AlE!7% Q-o}Xnj*!L spter35b[ while(!bStop) ^*(*tS|M { A.tONPi write_nPos(); lj0"2@z3"E Utility.sleep(500); VL=. JwK breakWhile = true; [mX/]31 }9yAYZ0q{b )7@f{E#w for(int i=0;i<nStartPos.length;i++) Lt>"R! "x { d\&{Ev9v if(!fileSplitterFetch.bDownOver) LdxrS5 { `F5iZWW1 breakWhile = false; .U|irDO break; nI4Kuz`dF } R!IODXP= } ??eSGQ| if(breakWhile) "`]G>,r_ break; ) *Mr{` +k|t[N JW[y //count++; _Kdqa%L
! //if(count>4) (XW\4msB)I // siteStop(); 6d/;GyG } G q%q x4 3\_ae2GW K P{|xQ> System.err.println("文件下载结束!"); B1dVHz# } ~ED8]*H|` catch(Exception e){e.printStackTrace ();} ;|_aACina } 0G`_dMN Y"~Tf{8 Y+5nn //获得文件长度 8|kr|l public long getFileSize() e~C5{XEE { Sq^f}q int nFileLength = -1; _~V7m try{ d 7vD URL url = new URL(siteInfoBean.getSSiteURL()); 4FSA:]o- HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); qgREkb0 httpConnection.setRequestProperty("User-Agent","NetFox"); XFpII45 &KinCh7l L PI_MSiYQ int responseCode=httpConnection.getResponseCode(); zUX%$N+w}> if(responseCode>=400) sq
`f?tA? { KwGk8$ U processErrorCode(responseCode); gB/4ro8 return -2; //-2 represent access is error q =sEtH=
} (iub \` ?+#|h;M8 a@(4X/| String sHeader; z}I =: $:IOoS|e ~ [L4,q for(int i=1;;i++) l&3f<e { _'pow&w~ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); $="t7C9S //Utility.log(in.readLine()); 2R9AYI sHeader=httpConnection.getHeaderFieldKey(i); $HVus=D" if(sHeader!=null) ~uqpF-. { WAr;g?Q8 if(sHeader.equals("Content-Length")) 69#mj*p@+ { mS?.xu nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); I(LBc break; h|
q!Qsnj' } w`_cmI } ffMh2 else v4M1uJ8 break; ?,GCR1|4 } HJ4T! `'d } 7ux0|l catch(IOException e){e.printStackTrace ();} {OFbU catch(Exception e){e.printStackTrace ();} /^_~NF# &5JTcMC^ +ob<?
T Utility.log(nFileLength); 9 0PF)U .|>zQ(7YC ee7#PE]} return nFileLength; |'@c ~yc } `PML4P[ }dnO7K I+nKaN+8i
//保存下载信息(文件指针位置) kU uDA><1 private void write_nPos() +/!kL0[v { Ik{[BRzUgt try{ @tv3\eD output = new DataOutputStream(new FileOutputStream(tmpFile)); [[uKakp
output.writeInt(nStartPos.length); VVY#g%(K for(int i=0;i<nStartPos.length;i++) n-X;JYQW { >K]s)VuWR // output.writeLong(nPos); 'Xj9sAB output.writeLong(fileSplitterFetch.nStartPos); &f12Q&jY7 output.writeLong(fileSplitterFetch.nEndPos); <{$0mUn;s| } M0Eq
7:Ba output.close(); -M]NdgI } \#1*r'V8 catch(IOException e){e.printStackTrace ();} ]/byz_7] catch(Exception e){e.printStackTrace ();} Fh2$,$
2 } xd[GJ;xvs fP|rD[ gz{~\0y //读取保存的下载信息(文件指针位置) | %E\?-TK private void read_nPos() }M3f ?Jv { .MNi)+ try{ <*D{uMw DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,&+"|,m int nCount = input.readInt(); Gyo[C98 nStartPos = new long[nCount]; 66A}5b4)] nEndPos = new long[nCount]; oW0A8_|9 for(int i=0;i<nStartPos.length;i++) |>w>}w`~ { :X1~ nStartPos = input.readLong(); +{b!,D3sa* nEndPos = input.readLong(); ?&qa3y)wX: } 1oD1ia# input.close(); &yu3nA:7D } c
eH8 catch(IOException e){e.printStackTrace ();} Xz/5Wis4 catch(Exception e){e.printStackTrace ();} z^@.b } $bf&ct*$h )C?bb$
G $e(]L(o; private void processErrorCode(int nErrorCode) z"cF\F { &/%A 9R, System.err.println("Error Code : " + nErrorCode); XctSw } . X(^E x3./ Cxn<#Kf\-< //停止文件下载 *t_"]v-w public void siteStop() q_0So} { ;3\oU$' bStop = true; E;$;g#ksf for(int i=0;i<nStartPos.length;i++) BQ X6Q< fileSplitterFetch.splitterStop(); nIRJ5|G( rE:"8d}z h$F.(N IYe } zDEX `~c } J<p.J3I //负责部分文件的抓取 to}g4 **FileSplitterFetch.java 1_AB;^ */
dv?ael^ package NetFox; i5f8}`w $P=B66t
^ CV9o,rL import java.io.*; J%8M+!`F import java.net.*; 4CUoXs' ~&zrDj~FI MCPVql`+`q public class FileSplitterFetch extends Thread { [w0@7p"7 ,r=9$i_ Iq76JJuCb String sURL; //File URL hW^*b:v{ long nStartPos; //File Snippet Start Position YY!Lv:.7> long nEndPos; //File Snippet End Position VnZRsFY<^ int nThreadID; //Thread's ID ].=~C"s,a boolean bDownOver = false; //Downing is over #3b_#+, boolean bStop = false; //Stop identical pQQN8Y~^Y FileAccessI fileAccessI = null; //File Access interface <)hA?3J {ylY"FA wiwAdYEQ\ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException dC&OjBQ { 4trP*u,4 this.sURL = sURL; Ry$zF~[ this.nStartPos = nStart; s}
I8:ufT this.nEndPos = nEnd; W0zRV9"P nThreadID = id; pUGFQ."\ fileAccessI = new FileAccessI(sName,nStartPos);//定位 W6e,S[J^FY } |4$.mb.
M2pe*z SG5GJCkc public void run() [`F}<L." { S]}hh,A while(nStartPos < nEndPos && !bStop) {D6p?TL+ { (D\7EH\9,] n@TK}?\UoR Su4&qY try{ )bd)noZi URL url = new URL(sURL); QR ?JN\%? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -Kas9\VWEw httpConnection.setRequestProperty("User-Agent","NetFox"); :4Gc'bR String sProperty = "bytes="+nStartPos+"-"; qjcPJ httpConnection.setRequestProperty("RANGE",sProperty); #[
H4`hZ Utility.log(sProperty); &oz^dlw Az+k8=? u<g0oEs) InputStream input = httpConnection.getInputStream(); r<%ua6@ //logResponseHead(httpConnection); H^VNw1. lQ8h -Tz h_( #U)z_3 byte[] b = new byte[1024]; /?ZO-]q int nRead; BR*'SF\T while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) K@f@vyw] { d@0p<at>~ nStartPos += fileAccessI.write(b,0,nRead); L:.z
FW, //if(nThreadID == 1) Rudj"OGO // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); xJ$/#UdP } ; ,vGw<|o 7J[DD5 .83{NF Utility.log("Thread " + nThreadID + " is over!"); Cr7T=&L bDownOver = true; wV604eO( //nPos = fileAccessI.write (b,0,nRead); N4[`pXM6 } gNWTzz<[f> catch(Exception e){e.printStackTrace ();} [%0{7pz} } rN3qTp } \&6^c=2= @#j?Z7E| #`HY"-7m_ //打印回应的头信息 9a6ij*# public void logResponseHead(HttpURLConnection con) y6hb-:
#1 { qxQuXF>:# for(int i=1;;i++) <Jf[N= { |3bCq(ZR\P String header=con.getHeaderFieldKey(i); eT'Z;ZO if(header!=null) *=2sXH1j //responseHeaders.put(header,httpConnection.getHeaderField(header)); Uhw:XV@m Utility.log(header+" : "+con.getHeaderField(header)); f`gs/R else qk{+Y break; @W1F4HYds } m8T< x> } n9 %&HDl4 b2tUJ2p 5r)]o'?s public void splitterStop() R PB%6z$ { t:O"t
G bStop = true; KLBX2H2^0 } (
kKQs") ]aMeMhe- <2V:tj)?P } O
a%ZlEUF 8Y,imj\(v xU!eT'Y /* \C}_l+nY **FileAccess.java mm:g9j *//文件访问(定位,写) ;ztt*py package NetFox; (M-Wea!q import java.io.*; ln2lFfz %K[u X{u\|e{ public class FileAccessI implements Serializable{ IA;'5IF fEB&)mM //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 "g%=FH3e RandomAccessFile oSavedFile; ED;rp9( long nPos; YApm)O={ 69?wZfj' I^l\<1"] public FileAccessI() throws IOException 9 S4bg7 { $X_A74( this("",0); KCl85Wi' } KNG7$icG NVX @1} 'JRYf;9c public FileAccessI(String sName,long nPos) throws IOException >X_5o^s2s { m#,AD,s oSavedFile = new RandomAccessFile(sName,"rw"); \|YIuzlO4 this.nPos = nPos; :V!F~ oSavedFile.seek(nPos); p9-s' F|@i } ,<t)aZL,A; Tl!}Rw~Pg o JX4+uJ public synchronized int write(byte[] b,int nStart,int nLen) UGP,/[XI { aCF=Og int n = -1; _]t^F9l try{ wZ%a:Z4TcM oSavedFile.write(b,nStart,nLen); #oD; ?Mi n = nLen; $4:Se#nl } He)!Ez\X catch(IOException e) _Q9I
W { Yv/T6z@ e.printStackTrace (); .z, ot| } {fI"p;| H(gETRh 045_0+r"@ return n; `LOW)|6r` } sXwa`_{ F#)@ c '\% Kd+k } E}g)q;0v|2 Q;?rqi
, y#{v\h
Cz /* _KJ!C! **SiteInfoBean.java n+57# pS7 */ NHQi_U package NetFox;
rK[;wD< &7r73~TXm Bp-e< : public class SiteInfoBean { dT7!+)s5- ;R([w4[~ 3_ ZlZ_Tq private String sSiteURL; //Site's URL 2C AR2V| private String sFilePath; //Saved File's Path .$ X|96~$ private String sFileName; //Saved File's Name WRp0. private int nSplitter; //Count of Splited Downloading File dUH+7.\ KP&$Sl =`ECM7 public SiteInfoBean() |@BX*r {//nSplitter的缺省值为5 [=TD)o>W(p //default value of nSplitter is 5 vMzBp#MT this("","","",5); i :|e#$x } _>E=.$ @y2cC6+'t oc"7|YG public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 8l*h\p:Q { FGzn|I sSiteURL= sURL; X@ S~D7|ja sFilePath = sPath; q.bxnta" sFileName = sName; $kBcnk this.nSplitter = nSpiltter; <~zPt&C]V V-9\@'gc .dsB\C } v Q51-.g
no(or5UJ C@Wd Pjxj public String getSSiteURL() o8X? 1 { ?&-$Zog return sSiteURL; 6[,7g&C } @77+K:9I7 p$}/~5b}4 >U)>~SQf public void setSSiteURL(String value) P~;1adi3 { "hnvND4= sSiteURL = value; /\MkH\zg } 8?1MnjhX10 6^)eW+ {_4`0J`3 public String getSFilePath() >en\:pJn)' { On0,#i= return sFilePath; /
5/mx } [)?yH3 ft1V1 c Q<Qd*v&- public void setSFilePath(String value) _p'u!.a?! { FXul
u6"SX sFilePath = value; O1!YHo } _
glB<r$ =>XjChM yO`
|X public String getSFileName() >T)tAZ?WK { s Fx0 return sFileName; 9)>+r6t } ECk3Da ]xGpN ]u eo~b]D public void setSFileName(String value) /!%?I#K{Wq { tn;{r sFileName = value; /VD[: sU7 } 2BiFP|| (+SL1O P :j? MEeu public int getNSplitter() 6xFchdMG{m { Dutc#?bT return nSplitter; I|wC`VgB } B`YD>oCN CwD=nT5` Vjd(Z public void setNSplitter(int nCount) s4j]kH { ?6UjD5NkX nSplitter = nCount; 4";NT;_q5 } Vha,rIi } )q`.tsR> w3#0kl 0\Tp/Ph /* bB)$=7\ **Utility.java >7r%k,` */ #/5eQTBD package NetFox; vdigw.=z ,w
f6gmh8 V.ET uS; public class Utility { Et
y?/ eVd:C8q G#ELQ/Q public Utility() _St":9'uU { kek/C`7 NLu[<u U* JXHf$k } P/xEn_*v BF 0#G2`h> //线程睡眠 (b.4&P"0 public static void sleep(int nSecond) "MK2QIo { $)~ :H- try{ ,&
wd Thread.sleep(nSecond); 9Vl}f^Gn } {|@}xrB catch(Exception e) x3sX=jIW_ { ,f@j4*) e.printStackTrace (); ' 6)Yf}I } O{\%{XrW } W>qu~ak?x j3H_g^ //日志 yo8mfH_, public static void log(String sMsg) s>W :vV@ { * U}-Y* System.err.println(sMsg); eSHsE3}h
} {|<yZ,,p 7rYBFSp 5V~vND*
s public static void log(int sMsg) 'h^Ya?g { L)4~:f)B System.err.println(sMsg); @t0T+T3 } l-Ha*>gX[j } UFLx'VXd `PUxR8y HCCq9us /* MPK rr **TestMethod.java /r2S1"(q */ !X||ds package NetFox; >?_}NZ,y 6(x53y__ :pNS$g[ public class TestMethod { 7yXJ\(6R_ sAPQbTSM }/#*opcv public TestMethod() T1R~^x1 { ///xx/weblogic60b2_win.exe &,3s2,1U( try{ ,CN(;z) SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); NpCQ4K //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Z9MR"!0 SiteFileFetch fileFetch = new SiteFileFetch(bean); KFRf5^ % fileFetch.start(); m9\"B3sr } t: oQHhO? catch(Exception e){e.printStackTrace ();} 8'_MCx( =v'Aub q317~z_nl } M,X)rM}Q }_F:]lI*R G Y.iCub public static void main(String[] args) & |