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/* \yxGE+~P **SiteFileFetch.java px+]/P<dX */ W$J.B!O package NetFox; EM+! ph import java.io.*; yv>uzb`N import java.net.*; wN/v-^2 U~@;2\
o CWYOzqf public class SiteFileFetch extends Thread { ]~f-8!$$R |Zp')
JiS e7&RZ+s#wZ SiteInfoBean siteInfoBean = null; //文件信息Bean qf<o"B|_9 long[] nStartPos; //开始位置 V$Oj@vI long[] nEndPos; //结束位置 yT7{,Z7t FileSplitterFetch[] fileSplitterFetch; //子线程对象 h<PS< long nFileLength; //文件长度 v@s"*E/PF7 boolean bFirst = true; //是否第一次取文件 k+je-%hPj boolean bStop = false; //停止标志 w-v8P`V File tmpFile; //文件下载的临时信息 2\+N<-(F5 DataOutputStream output; //输出到文件的输出流 p?P.BU\CR 2~r2ErtS //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) yOb'] public SiteFileFetch(SiteInfoBean bean) throws IOException EqIs&){ { *p0n^XZ% ? siteInfoBean = bean; rd[mC[
r //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 7*Zm{r@u tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); L5 Ai if(tmpFile.exists ()) (R RRG;*n# { $`t2SD bFirst = false; UX|3LpFX&I read_nPos(); ?hIDyM } 78?{;iNv else 7M?Sndp$ { +G7[(Wz(z nStartPos = new long[bean.getNSplitter()]; j-FMWEp nEndPos = new long[bean.getNSplitter()]; 4@a/k[, } uz=9L<$ 92b}N|u ;9J6)zg !n YX3NZW2i } L"jjD: !Ow
M-t 6 vJS"+ < public void run() j^f54Ky. { YuzVh9jTI //获得文件长度 { W5
_KX //分割文件 tBsvi%F //实例FileSplitterFetch ;vpq0t` //启动FileSplitterFetch线程 ^EmePkPI //等待子线程返回 j``Ku@/x0 try{ lC
d\nE8G if(bFirst) X>]<rEh { X?`mYoe nFileLength = getFileSize(); %Z*)<[cIE0 if(nFileLength == -1) n
\&H~0X { zP c54>f System.err.println("File Length is not known!"); >.XXB
5a } e\*(F3r else if(nFileLength == -2) I0^oaccM { jOK!k System.err.println("File is not access!"); 3z"%ht~; } BcQw-<veu else a
[f}-t9 { #9qX:*>h for(int i=0;i<nStartPos.length;i++) -7Kstc- { :x?G[x= nStartPos = (long)(i*(nFileLength/nStartPos.length)); ZHj7^y@P } t+0/$ for(int i=0;i<nEndPos.length-1;i++) Ch~y;C&e+r { Yb:F,d-Ya nEndPos = nStartPos[i+1]; Pb59RE:7V } a5w E{K nEndPos[nEndPos.length-1] = nFileLength; dXU6TCjU7 } H87k1^}HV } c/(Dg$DbX }me`(zp ;H?tcb* //启动子线程 CXi:?6OG fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; X7MA>j3m for(int i=0;i<nStartPos.length;i++) <jLL2-5r0 { FJW,G20L fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^Q!A4qOQ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 91k-os(4] nStartPos,nEndPos,i); ydE}.0zN Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); K>-01AGHL fileSplitterFetch.start(); ~D/1U)kt } A[:(#iR5-E // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]l siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ;g<y{o"Q3p // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", SkU9iW(k nEndPos = " + nFileLength); b$`/f:_ // fileSplitterFetch[nPos.length-1].start(); DYgz;Y/%l r[2*K 9 %e+*&Z', //等待子线程结束 U.N&~S //int count = 0; ?MvL}o\| //是否结束while循环 71\GK boolean breakWhile = false; o9OCgP`Y FbW$H]C$ !H6X%hlk while(!bStop) )X8N|W>vh { /?}2OCq write_nPos(); NA#,q 8 Utility.sleep(500); &=wvlI52` breakWhile = true; >g{b'Xx ?&VKZSo
LFvZ 7M\\ for(int i=0;i<nStartPos.length;i++) ( F4c0 { g)IW9q2 if(!fileSplitterFetch.bDownOver) :_o^oi7G { Qm*X Wo breakWhile = false; ]q&NO(:kbq break; caV DV } Fn{Pmo*rs } Nc?'}, if(breakWhile) ?R4%z2rcW break; WzBr1
ea{I v8C4BuwA LbR'nG{J //count++; (?"z!dg c //if(count>4) 9xFI%UOb# // siteStop(); C3(h j } `^h:}V "ZFH_5< |AS<I4+& System.err.println("文件下载结束!"); 4I*'(6
,! } +M<W8KF catch(Exception e){e.printStackTrace ();} A>_,tt
} K@a#^lmd QH?sx k2 ,,lR\!>8 //获得文件长度 uJ0Wb$% public long getFileSize() "+Sq}WR { #er% q: int nFileLength = -1; =J'Q%qN<Zd try{ :@-.whj URL url = new URL(siteInfoBean.getSSiteURL()); 6Xbf3So HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); &2I8!Ia httpConnection.setRequestProperty("User-Agent","NetFox");
=y`-:j\ G#A6<e/ 6{yn;D4 int responseCode=httpConnection.getResponseCode(); h.NCG96S if(responseCode>=400) >P//]nn { @#;*e] 1a processErrorCode(responseCode); B![:fiR` return -2; //-2 represent access is error [a?bv7Kz } 0Gu?;]GSv W>:MK-_J c c/nzB String sHeader;
eC L_c>3!
'(g;nU< }}k*i0 for(int i=1;;i++) 6\`8b&'n { #zBqj;p //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -= izu]Fb, //Utility.log(in.readLine()); 5fYWuc9}z sHeader=httpConnection.getHeaderFieldKey(i); 0)ZLdF_6 if(sHeader!=null) sf:IA%.4t { MU\Pggs if(sHeader.equals("Content-Length")) W1Ye+vg/s { 1}+b4"7] nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); u|6-[I break; VL'wrgk } 5?([jAOf } 7S=,# else O f-xGoYZ break; VJ_fA}U } rBy0hGx } gGx(mX._L? catch(IOException e){e.printStackTrace ();} 6a_U[-a9; catch(Exception e){e.printStackTrace ();} \u))1zRd ;jN1n
xF o=K9\ l Utility.log(nFileLength); sLXM$SMBh y`
'#gH foL4s;2 return nFileLength; "?lz[K> } *X ;ch55\ 1i_%1Oip a|.IAxJ //保存下载信息(文件指针位置) @^ *62 private void write_nPos() wu`+KUx { Fq5u%S try{ ,^Q~w
b!{ output = new DataOutputStream(new FileOutputStream(tmpFile)); 56.JBBZZ output.writeInt(nStartPos.length);
-$I30.# for(int i=0;i<nStartPos.length;i++) q-uzu ! { \8s:I+[HH // output.writeLong(nPos); v ?}0h5 output.writeLong(fileSplitterFetch.nStartPos); pV_zePyOn output.writeLong(fileSplitterFetch.nEndPos); \i@R5v=zL } =5V7212 output.close(); ZGsd cnz } 4
2DMmwB catch(IOException e){e.printStackTrace ();} O8_!!Qd catch(Exception e){e.printStackTrace ();} \~(kGE--+ } ccPWfy_ 75R#gQ]EV (C"q-0?n //读取保存的下载信息(文件指针位置) '5[(QM5Gi& private void read_nPos() N- knhA { 0GeL">v,:= try{ '@h DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); rqdN%=C int nCount = input.readInt(); q5-i=lw nStartPos = new long[nCount]; !Ko> nEndPos = new long[nCount]; JMo r[* for(int i=0;i<nStartPos.length;i++) &FT`z"^ { u a_w5o7 nStartPos = input.readLong(); T4"D&~3
3q nEndPos = input.readLong(); 5B2p_$W# } 9#&H'mG input.close(); 8wOscL f: } 4;CI<&S catch(IOException e){e.printStackTrace ();} G)t-W%D& catch(Exception e){e.printStackTrace ();} `XK\',
}F } TNA7(<"fV| Pmd[2/][ Fb8d=Zc private void processErrorCode(int nErrorCode) Wkjp:`(-$r { C~@m6K System.err.println("Error Code : " + nErrorCode); \y(3b# } $ B&ZnZ? <f8j^ Dv/7w[F //停止文件下载 ,zHL8SiTX public void siteStop() =mZYBm,IQ { 43M.Hj] bStop = true; Q*PcO \Y!y for(int i=0;i<nStartPos.length;i++) }8aqSD<: fileSplitterFetch.splitterStop(); *PL&CDu=) 6fo"k+S uyB 2 } _LC*_LT_ } 7]T(=gg / //负责部分文件的抓取 fd>{UyU **FileSplitterFetch.java 0NZ'(qf~9 */ M57<e`m package NetFox; f)z(9JJL `:V'E>B ,
ftJw import java.io.*; *Ic^9njt import java.net.*; *p\Zc*N;% b5^>QzgD ?yq=c public class FileSplitterFetch extends Thread { x}c IBJNs$ xlwf @XW String sURL; //File URL i)X~L4gn long nStartPos; //File Snippet Start Position +<[ q"3 long nEndPos; //File Snippet End Position X coPkW int nThreadID; //Thread's ID _1G/qHf^S boolean bDownOver = false; //Downing is over DAWF
=p] boolean bStop = false; //Stop identical /Z^a,%1 FileAccessI fileAccessI = null; //File Access interface JP6 Noia 7UW\|r } (-9d public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException <zn)f@W { ;#v3C; this.sURL = sURL; C@`#@1X this.nStartPos = nStart; {X(nn.GpC this.nEndPos = nEnd; FD
8Lk nThreadID = id; :g63*d+/G fileAccessI = new FileAccessI(sName,nStartPos);//定位 }O@>:?U } N}B&(dJ
{q8|/{; @hg[v`~ public void run() kGAgXtE { TCyev[( while(nStartPos < nEndPos && !bStop) $aJay]F { |f$+|9Q? jH<Sf: Y( j`.&4.7+ try{ }a5TY("d9H URL url = new URL(sURL); ~\NQkaBkY HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7MrHu2rZ= httpConnection.setRequestProperty("User-Agent","NetFox"); A~vx,|I String sProperty = "bytes="+nStartPos+"-"; IWq\M,P httpConnection.setRequestProperty("RANGE",sProperty); |Sjy
Utility.log(sProperty); 8ly)G _dk[k@5W{' _4Eq_w` InputStream input = httpConnection.getInputStream(); tUULpx.h //logResponseHead(httpConnection); zx\-He \ [[xyd nD
eVY K byte[] b = new byte[1024]; PV~D; int nRead; y-.{){uaD while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) |A*4Fuc& { )HE{`yiLL nStartPos += fileAccessI.write(b,0,nRead); M("sekL //if(nThreadID == 1) \w1XOm [) // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); eJ45:]_%I@ } DQW)^j
h /"La@M37 <]G'& iv> Utility.log("Thread " + nThreadID + " is over!"); &)Qq%\EP4 bDownOver = true; k6(</uRj //nPos = fileAccessI.write (b,0,nRead); [sH3REE1h } %b*N.v1+ catch(Exception e){e.printStackTrace ();} LRu*%3xx } T<Xw[PEnP } oCkG &D{!zF ?'f //打印回应的头信息 cd1-2-4U public void logResponseHead(HttpURLConnection con) Hm>cKPZ) { w]qM
for(int i=1;;i++) Ua|iAD1 { #lqH/>`> String header=con.getHeaderFieldKey(i); =C,DR4xh if(header!=null) U{ 0~& //responseHeaders.put(header,httpConnection.getHeaderField(header)); &Cj~D$kDEu Utility.log(header+" : "+con.getHeaderField(header)); _PPC?k{z! else q
6UZ`9&z break; TEo } 9[VYd ' } iP9]b& iT{4-j7|P4 j~\FDcG*ed public void splitterStop() YC 4c-M { ?/MkH0[G = bStop = true; Ws3z-U>j } jEQ_#KKYJ )vOBF5 T2]8w1l&K } ^kcuRJ0*$ w)S 4Xi= A3 TR'BFw- /* Ji,;ri2i **FileAccess.java X4:84 *//文件访问(定位,写) P]^8Enp package NetFox; 1t/c@YUTy import java.io.*; g&p(XuN ~DxuLk6
s J|U~W
kW public class FileAccessI implements Serializable{ YY tVp_) k~<Ozx^AyY //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 +|S)Mm8- RandomAccessFile oSavedFile; |wb_im long nPos; 7\$}|b[9 )cQ KR4x0^ ;9)nG,P3 public FileAccessI() throws IOException <w~$S0_ { pK{G2]OK{U this("",0); D6e?J. } ^|h_[> .XK3o .ZhW dmkGIg} public FileAccessI(String sName,long nPos) throws IOException D?Ol)aj? { 8TH;6-RT oSavedFile = new RandomAccessFile(sName,"rw"); {s*1QBM$\Z this.nPos = nPos; 4$2HO`@uN oSavedFile.seek(nPos); K(MZ!>{ } rFC9y o v%`k*n': 4s>L]!
W$8 public synchronized int write(byte[] b,int nStart,int nLen) j1Sjw6}GCH { %y>*9$<pXe int n = -1; #>CWee; try{ .{;RJ:O oSavedFile.write(b,nStart,nLen); ^Bw"+ 6d n = nLen; 2"
v{ } 33}p02# catch(IOException e) ~|{e"!(} { 9XS>;<"2 e.printStackTrace (); =VWH8w.3 } /NPx9cLW^ Mp5Z=2l5 IA=\c return n; T9}dgf } ow,! 7|m w1F)R^tU .ArOZ{lKD> } qMO(j%N5 "0>AefFd# &u2m6 r>W /* #cJ1Jj $ **SiteInfoBean.java {>ghX_m| */ [4])\q^q package NetFox; ZS&+<kGD C1YH\X(r 4Dd]:2|D public class SiteInfoBean { nob}}w]~C eY:jVYG( ?%>S5,f_ private String sSiteURL; //Site's URL PMj!T \B| private String sFilePath; //Saved File's Path }mk z_P(Z private String sFileName; //Saved File's Name *MCkezW7{ private int nSplitter; //Count of Splited Downloading File kf' 4C
"} b u/GaE~ Wjd_|Kui public SiteInfoBean() 0e'@Xo2e {//nSplitter的缺省值为5 7X/B9Hee //default value of nSplitter is 5 Z7MGBwP( this("","","",5); nG|
NRp } r;zG
jpiBHi]5+ -zm-|6[Wi public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) NF*Z<$ '% { O
0P4uq sSiteURL= sURL; V9D>Xh!0H sFilePath = sPath; H|d"45J_ sFileName = sName; 1|7tq this.nSplitter = nSpiltter; l.SoiFDd D'_w
* H7Ee0T(` } 5mI}IS|@ j@jUuYuDgl GUvEOD=p public String getSSiteURL() FlLk.+!t { ;c# jO:A5 return sSiteURL; 6PRP&|.# } &>Nw>V rn-CQ2{? Z2I2 [pA public void setSSiteURL(String value) f;a55%3c { 2?(dS sSiteURL = value; Nb/Z + } N?mQ50o~C ~:"//%M3l 9h0Y">}`b public String getSFilePath() 43BqNQ0 { QWAtF@qTV return sFilePath; pn
aSOyR } iiTt{ab\Y X32{y973hT 1c*XmMB public void setSFilePath(String value) l[b`4 { '"]U+aIg sFilePath = value; 7) Qq } V*F |Yo: ?!$:I8T (cm8x public String getSFileName() X~ g9TUv8 { QJtO~~- return sFileName; 'Em633 } .CBb%onx aJ$({ZN\# . MH;u3U public void setSFileName(String value) \MB$ Cwc { V5bB$tL}3 sFileName = value; *w[0uQL5Z } M. fA5rJ^ ^W,~ w7QYWf' public int getNSplitter() oR'u&\mB { jUd)|v+t return nSplitter; |?4NlB6 } ?OVje9 \U.js- A/ 88WC$v public void setNSplitter(int nCount) "43F.!P { 9i+`,r
nSplitter = nCount; kt7x}F(?< } C!W0L`r } ~ ;ObT= )F,z pGG U[W &D%' /* /o9
0O& **Utility.java @z>DJ>htN */ ~9n30j%]s package NetFox; Ih)4.lLcKn U;t1 K ]Wtg.y6; public class Utility { 8~y&" \ Tb\<e3Te_ YFP<^y= public Utility() <."KejXg- { 4))N(m%3F 2])e}&i `N8t2yF } 1@n'6!]6O 5&qBG@Hw] //线程睡眠 L}rYh`bUP[ public static void sleep(int nSecond) {@hJPK8 { R5&<\RI0 try{ Hb0_QT~ Thread.sleep(nSecond); J vq)%t8q> } k~)@D| ? catch(Exception e) O_L>We@3E { [,(+r7aB e.printStackTrace (); %<fs \J^k } l+j
!CvtI } oRZe?h^r# #4<=Ira5 //日志 $PRUzFZ public static void log(String sMsg) 8:[ l1d86 { #x`K4f) System.err.println(sMsg); (I/iD.A } #}l$<7ZU 'KDt%?24 6|IJwP^Q_ public static void log(int sMsg) }B_?7+ { `@ny!S|1/ System.err.println(sMsg); QAAuFZs } rgDl%X2B } "!CVm{7[ +*,!q7Gt O p1TsRm5L /* a,(nf1@5 **TestMethod.java #%w+PL:*O */ "U+c`V=w package NetFox; 3iUJ!gK /:ZwGyT; Bh'!aip k public class TestMethod { .)=*Yr M g9CedD%40 ;K~=? k public TestMethod() h(R7y@mp\0 { ///xx/weblogic60b2_win.exe v(GnG try{ 'HJ+)[0X* SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); (P;TM1k //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); v_Df+ SiteFileFetch fileFetch = new SiteFileFetch(bean); w>8kBQ?b fileFetch.start(); kvuRT`/ } X)6 G :cD catch(Exception e){e.printStackTrace ();} H-nhq-fut 63J3NwFt R)ZzRz|/ } Pksr9"Ah
~ @*q8lC ]*'_a@h public static void main(String[] args) Nsq=1)
< { 4w'&:k47 new TestMethod(); ^*4#ZvpG2 } Pz[UAJ } GF9[|).
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