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/* ;>PV]0bOm> **SiteFileFetch.java 2-$R@
SVy */ ]Y3ALQr! package NetFox; }Iu 6]?|' import java.io.*; Va1|XQ<CL import java.net.*; _8bqk\m+ 46mu,v I!bG7;=_ public class SiteFileFetch extends Thread { m8FKr/Z- o}[wu:>yk mk[n3oE1 SiteInfoBean siteInfoBean = null; //文件信息Bean 77)C`]0( long[] nStartPos; //开始位置 $hA[vi\5 long[] nEndPos; //结束位置 Qc6323/" FileSplitterFetch[] fileSplitterFetch; //子线程对象 [ P
8e=; long nFileLength; //文件长度 Sna7r~j boolean bFirst = true; //是否第一次取文件 2^|*M@3r boolean bStop = false; //停止标志 j3$KYf`T} File tmpFile; //文件下载的临时信息 f1Rm9`` DataOutputStream output; //输出到文件的输出流 RNm/&F1C$ _Wgg=A"G //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) jML}{>Gy8S public SiteFileFetch(SiteInfoBean bean) throws IOException -`rz[";n { 6CCM7 siteInfoBean = bean; I+}h+[W //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); V;>p@uE,P tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); `LNRl'Zm if(tmpFile.exists ()) 9X!OQxmg { J H6\;G6 bFirst = false; P,,@&*
: read_nPos(); d=q2Or } eQMY3/# else W4Zi?@L>' { c: _l+CgeH nStartPos = new long[bean.getNSplitter()]; p`Ax)L\f nEndPos = new long[bean.getNSplitter()]; `2GHB@S"k } SV-pS># *r[PZ{D+ ;X\,-pjv SC'fT! } 1;SWfKU?. c\n\gQ:LQ `2{x8A public void run() tM~R?9OaJ { ,*Sj7qb# //获得文件长度 y+@7k3" //分割文件 =T!M` //实例FileSplitterFetch S?;&vs9j //启动FileSplitterFetch线程 9^ )=N=wV //等待子线程返回 #p0vrQ;5f try{ I:[3x2H if(bFirst) {G_ZEo#x8, { )
_"`{2 nFileLength = getFileSize(); \
VJ3 if(nFileLength == -1) Rs7=v2>I { &d=j_9 System.err.println("File Length is not known!"); YMC*<wXN } |]^OX$d else if(nFileLength == -2) 4h?[NOA" { 9=Y-w s System.err.println("File is not access!"); EZao\,t } .#P'NF(5# else *uNa(yd { S$ dFz for(int i=0;i<nStartPos.length;i++) Q!MS_
#O { YS%HZFY, " nStartPos = (long)(i*(nFileLength/nStartPos.length)); _r&`[@m } v 6Tz7 for(int i=0;i<nEndPos.length-1;i++) !\2Xr{f { tyNT1F{ nEndPos = nStartPos[i+1]; ~`(#sjr6KR } ,SH))%Cyt nEndPos[nEndPos.length-1] = nFileLength; c:M~!CXO } Beqzw0 } G-xW&wC- *e!0ZB3J ^ola5w D //启动子线程 k#&d`?X fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; )mS
Aog< for(int i=0;i<nStartPos.length;i++) gm\P`~+o { >`SIB; &>j fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "I}3*s9Q- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), {+!m]-s nStartPos,nEndPos,i); *C Me:a Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ~+7q.XL$$K fileSplitterFetch.start(); .9PPWY;H } 5_9mA4gs@ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^,qi`Tk siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 7NE"+EP\{2 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Rra<MOR nEndPos = " + nFileLength); ".Luc7 // fileSplitterFetch[nPos.length-1].start(); UW_fn =E,^ +`M >S,yqKp37~ //等待子线程结束 Z`Rrv$M! //int count = 0; *shE-w;C //是否结束while循环 F$F,I,$ " boolean breakWhile = false; |gg6|,Bt4 ^9UKsy/q 9{]U6A*K0w while(!bStop) ozy~`$;c { Y92wL} write_nPos(); h(l4\) Utility.sleep(500); ZF!cXo7d breakWhile = true; w9Bbvr6 %\IB_M ZxFRE#y~2 for(int i=0;i<nStartPos.length;i++) a<*q+a(*W { '@i0~ if(!fileSplitterFetch.bDownOver) T{<riJ`O { rozp breakWhile = false; m-Z<zEQ break; 4i|yEf } LVP2jTz } 4+"2K-] if(breakWhile) wc`UcGO break; nLicog)!I gqJSz}' H0r@dn //count++; Y@B0.5U2 //if(count>4) R~
n[g // siteStop(); P'MfuTtT& } )_BQ@5NK f9ux+XQk9 k+b!Lw!L System.err.println("文件下载结束!"); jwhc;y } jMr [UZ catch(Exception e){e.printStackTrace ();} |C"(K-do } =z#6mSx|W
BQTZt'p |Lf>Z2E //获得文件长度 tqbYrF) public long getFileSize() -|V1A[ { ZEa31[@B[ int nFileLength = -1; @
>_v/U' try{ p?rh+0wgX URL url = new URL(siteInfoBean.getSSiteURL()); |iSd< HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Z$jqB~=^e httpConnection.setRequestProperty("User-Agent","NetFox"); ]t0]fb[J o?5m^S14[1 W'lejOiw int responseCode=httpConnection.getResponseCode(); {02$pO if(responseCode>=400) c[VVCN8dA { ;\a?xtIy processErrorCode(responseCode); ,Y9bXC8+dU return -2; //-2 represent access is error ~P!\;S } w]1hoYuV eLF xGZ Z u|(;SY String sHeader; hvW FzT5 lEAf\T7 8_$[SV$q for(int i=1;;i++) Ck1{\=t { iepolO= //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); k0r93xa //Utility.log(in.readLine()); wH]5VltUT1 sHeader=httpConnection.getHeaderFieldKey(i); Z?JR6;@W if(sHeader!=null) "xWrYq'" { !U::kr=t if(sHeader.equals("Content-Length")) y[`>,?ns5 { gug9cmA/Q7 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); _ \&vA5- break; Mbm'cM&} } !#&`1cYX } t?Ku6Z' else Dxvizd>VU break; 1FA:"0lO } (}B3df } E)>.2{]C> catch(IOException e){e.printStackTrace ();} okm
}%#| catch(Exception e){e.printStackTrace ();} O}s Mqh P*6h$T Hnft1
Utility.log(nFileLength); VEsIhjQ 6+UTEw; ^=Dz)95c return nFileLength; !}lCwV } )B*D\9\Z Q6PaT@gs je;C}4 //保存下载信息(文件指针位置) qt{lZ_$ private void write_nPos() )WNw0cV}J> { M"\Iw'5$ try{ {"PIS&]tR output = new DataOutputStream(new FileOutputStream(tmpFile)); %fuV] output.writeInt(nStartPos.length); 3QI. |;X for(int i=0;i<nStartPos.length;i++) Llf#g#T { 'nIKkQ" N // output.writeLong(nPos); jhR`%aH4 output.writeLong(fileSplitterFetch.nStartPos); >\?RYy,s$ output.writeLong(fileSplitterFetch.nEndPos); \X2r? } icK>| output.close(); Uee(1 } s3-TBhAv catch(IOException e){e.printStackTrace ();} t p<v catch(Exception e){e.printStackTrace ();} K>2M*bGcp } -bd'sv 3d`u!i?/ b9 ;w3Ba //读取保存的下载信息(文件指针位置) ni$;"RGC private void read_nPos() "|Gr3 sD { mWUkkR(/ try{ prEI9/d" DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ;,lFocGv int nCount = input.readInt(); Y{d-k1?s5 nStartPos = new long[nCount]; J
?0P{{ nEndPos = new long[nCount]; tdsfCvF=a for(int i=0;i<nStartPos.length;i++) "IHFme@^ { H-,p.$3} nStartPos = input.readLong(); xs6kr nEndPos = input.readLong(); CzDV^Iv;Q{ } ;&dMtYb input.close(); b+`qGJrej } yGY:EvH^? catch(IOException e){e.printStackTrace ();} V]Rt[l] catch(Exception e){e.printStackTrace ();} WJJmM*>JW } 0Ke2%+yqJ ~KQiNkA\|l S3UJ)@
E private void processErrorCode(int nErrorCode) g4 3(N!@g { &gF9VY System.err.println("Error Code : " + nErrorCode); [*J?TNk } :85QwN]\ WF_v>g:g gNJdP!(t //停止文件下载 !bIE%cq public void siteStop() B[IWgvB(e { 5?Ukf$)x bStop = true; a9u2Wlz for(int i=0;i<nStartPos.length;i++)
RnSll- fileSplitterFetch.splitterStop(); bkuJN% KV)if' e I9#JM|2 } bcgXpP } -TMg9M4 //负责部分文件的抓取 ]D&U}n **FileSplitterFetch.java Dz&,g+>$J */ "TI>_~ package NetFox; %'uei4 #-i#mbZ e a/</P
|UG import java.io.*; ||L^yI~_d import java.net.*; &5[B\yv T>pyYF1Q lc 3N i<3v public class FileSplitterFetch extends Thread { OZ33w-X< ;F_P<b 2 \.'[!GE *c String sURL; //File URL 0|<9eD\I= long nStartPos; //File Snippet Start Position vb|
d long nEndPos; //File Snippet End Position b<%c ]z int nThreadID; //Thread's ID Wecxx^vtv6 boolean bDownOver = false; //Downing is over S5kD|kJ boolean bStop = false; //Stop identical lMl'+ yy FileAccessI fileAccessI = null; //File Access interface "G^TA:O:= |/ji'Bh t3AmXx public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException nu)YN1
* { 6L;]5)# this.sURL = sURL; *aJO5&w<T this.nStartPos = nStart; |e<$ this.nEndPos = nEnd; 9 p,O>I nThreadID = id; T^F83Py< fileAccessI = new FileAccessI(sName,nStartPos);//定位 ;b(ww{& } (*b<IGi; I$ R1#s hQ}_(F_H public void run() P4zwTEk` { ^f57qc3nF while(nStartPos < nEndPos && !bStop) [mQdc?n\ { Y/5(BK) MsZx 0] $o0.oY#
try{
IT7],pM URL url = new URL(sURL);
peHjKK HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); i&8|@CACb httpConnection.setRequestProperty("User-Agent","NetFox"); FQ>kTm`d String sProperty = "bytes="+nStartPos+"-"; ~<-mxOe httpConnection.setRequestProperty("RANGE",sProperty); =~"X/>' Utility.log(sProperty); bT6VxbNS u0]u"T&N! 3IJ0 P.x!o InputStream input = httpConnection.getInputStream(); 6{{<+
o //logResponseHead(httpConnection); {kBsiSvsA; ]28j$)6
QT5pn5+ z byte[] b = new byte[1024]; t\h4-dJn int nRead; jABFdNjri while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) SME9hS$4 { AusjN-IL nStartPos += fileAccessI.write(b,0,nRead); N:CQ$7T{ j //if(nThreadID == 1) 93Zij<bH?e // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =@pD>h/~ } sgDSl@lB xXc>YTK' ?68~ g<d, Utility.log("Thread " + nThreadID + " is over!"); icX4n bDownOver = true; MV??S{^4 //nPos = fileAccessI.write (b,0,nRead); ~o/k?l } jO/cdLKX( catch(Exception e){e.printStackTrace ();} Faa>bc~E } {6WG } Zk/ejhy0 s7HKgj C/QmtT~`e //打印回应的头信息 t|V<K^ public void logResponseHead(HttpURLConnection con) &AOGg\ { :8]8[ for(int i=1;;i++) }*U|^$FEU { YU" /p|!1 String header=con.getHeaderFieldKey(i); I 44]W & if(header!=null) i]N<xcF9N* //responseHeaders.put(header,httpConnection.getHeaderField(header)); w@&z0ODJ Utility.log(header+" : "+con.getHeaderField(header)); I`*5z;Q!%@ else S0Io$\ha break; wP*3Hx;S } o&&`_"18 } Kc95yt 7y&6q`y E nu7 R public void splitterStop() nGe4IY\-w { (# mvDz bStop = true; E
N%{ $ } ;Ce?f=4 e[?,'Mp9 h]L.6G|hEN } ;ne`ppz0 k*n~&y: O cc*?4C/t /* 4].o:d;`/ **FileAccess.java 6dmb
bgO) *//文件访问(定位,写) b_ak@LYiu package NetFox; 6r`N\ :18 import java.io.*; FZn1$_Svr \O4s0*gw 6)ibXbH public class FileAccessI implements Serializable{ 1U#W=Fg' $ZGup"z) //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 `kxC#
&HO RandomAccessFile oSavedFile; l?2 long nPos; i+qg*o$ =1dczJHV wn?oHz* public FileAccessI() throws IOException Exqz$'(W9 { 7%EIn9P this("",0); wM4{\ f\ } qqe"hruFJ .B-b51Uz Q-V8=. public FileAccessI(String sName,long nPos) throws IOException _AFje { =
g
& oSavedFile = new RandomAccessFile(sName,"rw"); xT_"` @ this.nPos = nPos; |" WL oSavedFile.seek(nPos); S9P({iZK } oJ
%Nt&q m3Wc};yE*Q W{.:Cf9 public synchronized int write(byte[] b,int nStart,int nLen) qbsod { |9%~z0 int n = -1; O5vfcX4> try{ bR)P-9rs oSavedFile.write(b,nStart,nLen); u &1M(~Ub= n = nLen; i8k} B
o } fMFkA(Of^ catch(IOException e) &"JC8 { ^7/v[J<< e.printStackTrace (); S+~;PmN9qL } x%r$/= (kB ;$6L_C4B return n; .pWRV<25 } b#p0s?* uP%VL}%0 ed/B.SY } NZv 8# &Pm@+ML*x U ->vk{v /* APF`b **SiteInfoBean.java C_/eNu\I */ r<1W.xd": package NetFox; #*.4Jv<R +58^{_k+% .<>t2,Af public class SiteInfoBean { ;"Qq/knVL _g/d/{-{Q >*gf1" private String sSiteURL; //Site's URL SF*mY=1 private String sFilePath; //Saved File's Path KTT!P 4 private String sFileName; //Saved File's Name BM:p)%Pv#P private int nSplitter; //Count of Splited Downloading File Y\_mqd l![79eFp g]HWaFjc5 public SiteInfoBean() yN{**?b {//nSplitter的缺省值为5 )e PQxx //default value of nSplitter is 5 w9GY/] this("","","",5); @H$am } 5)S;R, K/C} iUh7eR9 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) D9NRM;v { +qjZ;5( sSiteURL= sURL; *!"T^4DEg sFilePath = sPath; > `eo 0 sFileName = sName; faLfdUimJ this.nSplitter = nSpiltter; Q+K]:c u c!6?+0h ,B/TqPP } ~h8k4eM ,Aq, f$5V c/bT5TIEWs public String getSSiteURL() C $])q`9 { (AZneK
:* return sSiteURL; ld(_+<e } / zNVJhC :/=P6b; 4IfkYM public void setSSiteURL(String value) $<Gt^3e { 4%nK0FAj sSiteURL = value; wjX0r7^@ } h6LjReNo t"%~r3{ Bq~S=bAB>R public String getSFilePath() otjT?R2g' { ^8oN~HLZ return sFilePath; d:&cq8^ } AX@bM \ :@!rM Y(rQ032s public void setSFilePath(String value) (0 t{ { Dy. |bUB!f sFilePath = value; E"BW-<_! } S?v;+3TG kH0kf-4\ X
J]+F public String getSFileName()
2i6P<&@ { aF"PB
h= return sFileName; ]nIVP } f~=e u5qaLHoEP su\Lxv
public void setSFileName(String value) Aj\m57e,6 { >/GYw"KK sFileName = value; mrE>o! } uKIR$n" C\C*@9=&x 0""%@X]m public int getNSplitter() 4yxf/X) { cru&nH*O^ return nSplitter; GF<SQHL, } w"Zws[pm] yyVJb3n5:! {2g?+8L$Z public void setNSplitter(int nCount) S,+|A)\# { !C' Y
7 nSplitter = nCount; Gqar5 } "$%&C%t }
6 ;\>, =x^IBLHN \"K:<+RH /* W-RshZ\ **Utility.java ) { "}bMf */ +Sv2'& B package NetFox; Sf`?j 2rP!] &s.-p_4w^D public class Utility { r)qow.+& $I4JKh J(,gLl public Utility() }`$({\^w { XHuHbriI .0y .0=l Y5IQhV. } GV)DLHiyxX N':d
T //线程睡眠 c&L|e$C] public static void sleep(int nSecond) G"<} s
mB { W6*5e{ try{ kf",/?s2Z Thread.sleep(nSecond); H8qAj } =p!Hl# catch(Exception e)
5&U?\YNLa { $>l65)(E\ e.printStackTrace (); <M3&\ } 1NlpOVq:) } ^''3}<Ep 60p*4>^v //日志 zZCssn;[ public static void log(String sMsg) l(tMo7iPa { DoJ3zYEk System.err.println(sMsg); XlxB% } QfU{W@!h h4M>k{ 0s%{m< public static void log(int sMsg) 2mvp|<" { /(ArA=# System.err.println(sMsg); _H2%6t/V } 9[\$\l } 'F8:|g .TRp74 \G]vTK3 /* qZ+^ND(I **TestMethod.java oJ}$ /_ */ /u'M7R package NetFox; b;(BMO,( y"0!7^ !='&#@7u public class TestMethod { klC48l +Xr87x; nR$Q~` public TestMethod() 5./(n7d_ { ///xx/weblogic60b2_win.exe Nj4^G ~_ try{ PHn3f;I SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); o{
\r1<D //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); _/[(&}M SiteFileFetch fileFetch = new SiteFileFetch(bean); w8AHs/'r fileFetch.start(); F1zsGlObu} } e~BUAz catch(Exception e){e.printStackTrace ();} 8 =<&9TmE Y)v_O_` wd~!j&`a } '^6x-aeq[D #v4q:&yKf lWYgIpw public static void main(String[] args) -jsk-, { m3K .\3 new TestMethod(); 6/ thhP3`- } 3LD`Ep
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