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/* oR+-+-??$ **SiteFileFetch.java CF
y}r(q */ $KV&\Q3\0 package NetFox; <x%M3BTx import java.io.*; Dkw%`(Oh/, import java.net.*; O[~x_xeW S{F-ttS" 2)iD4G` public class SiteFileFetch extends Thread { uE_c4Hp xc
1A$EY jX=lAs~6 SiteInfoBean siteInfoBean = null; //文件信息Bean @
$cUNvI long[] nStartPos; //开始位置 AH7L.L+$M long[] nEndPos; //结束位置 .;/L2Jv FileSplitterFetch[] fileSplitterFetch; //子线程对象 db=$zIB[: long nFileLength; //文件长度 qG8s;_G boolean bFirst = true; //是否第一次取文件 r >{G`de4 boolean bStop = false; //停止标志 ,1n
>U?5 File tmpFile; //文件下载的临时信息 !jX4`/n2 DataOutputStream output; //输出到文件的输出流 2f, B$-# -xmf'c9P //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4k}e28 public SiteFileFetch(SiteInfoBean bean) throws IOException MlO-+}`_+ { 4|J[Jdj siteInfoBean = bean; @B1{r|-<^ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); SDJH;c0 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Pd=,$UQp if(tmpFile.exists ()) s}x>J8hK { l4'~}nn(Y bFirst = false; >}+Q:iNQ)2 read_nPos(); %(m]) } I d8wS!W`7 else (ClhbfzD { V}8$p8#<@ nStartPos = new long[bean.getNSplitter()]; #m. AN nEndPos = new long[bean.getNSplitter()]; eBB:~,C^q. } :1fagaPg oT+(W,G }F1s
tDx PB'0?b}fab } }Ag|gF!_ SQ(apc}N4 1IH[g*f public void run() </oY4$ l' { /9ZcM]X B //获得文件长度 B:oF;~d/, //分割文件 I@7/jUO //实例FileSplitterFetch Z_z#QX>=D //启动FileSplitterFetch线程 :Z`4j //等待子线程返回 GKtS6$1d# try{ x/TGp?\g if(bFirst) z MdC { )na&"bJ nFileLength = getFileSize(); gy_$#e if(nFileLength == -1) ))#'4 { TYS\95< System.err.println("File Length is not known!"); M=!i>(yG } /lD?VE else if(nFileLength == -2) [$\>~nj= { :iCM=k System.err.println("File is not access!"); T-L5zu } d+2daKi else !e8i/!}^S { ;b~~s.+ for(int i=0;i<nStartPos.length;i++) \P?ToTTV { L/r{xS nStartPos = (long)(i*(nFileLength/nStartPos.length)); vE\lp8j+ } BA+_C]%ZJ for(int i=0;i<nEndPos.length-1;i++) L'kq>1QWf { r2eQ{u{nX nEndPos = nStartPos[i+1]; hY8#b)l~lu }
WR.x&m> nEndPos[nEndPos.length-1] = nFileLength; bkQ3c-C< } u}jrfKdE } n.$(}A ijZ>:B2: 8OAg~mQ15( //启动子线程 H~9=&p[Q fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Z!\@%`0$ for(int i=0;i<nStartPos.length;i++) xfHyC'? { `F1dyf!p< fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), oh\,OW siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), YdOUv|tZC nStartPos,nEndPos,i); P#tvm, Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); tHI*, fileSplitterFetch.start(); "DckwtG:% } =HE
m) // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %?tq;~|]Q siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Z;<ep@gy~ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", TbNGgjT nEndPos = " + nFileLength); [&VxaJ("3 // fileSplitterFetch[nPos.length-1].start(); lizTRVBE Fj=NiZ= 0'yyfz //等待子线程结束 DX@}!6|T //int count = 0; FBYODw //是否结束while循环 B=zMYi boolean breakWhile = false; Q=+8/b nR'#s%Kj hZuYdV{'h while(!bStop) -V=arm\#z { <5ZJ]W write_nPos(); c4|so= Utility.sleep(500); :XS"#^aJ breakWhile = true; Dd/}Ya(Gi h~ha rSyaZ6# for(int i=0;i<nStartPos.length;i++) -CU,z|g+ {
5-'vB if(!fileSplitterFetch.bDownOver) <o@ )SD~K { 2V$9ei6 breakWhile = false; F0;1zw break; `Cj,HI_/* } `^%GN8d}nm } "6V_/u5M;= if(breakWhile) hEOJb
@:R break; WEC-<fN|Y\ |h,FUj<r jOl 1_ //count++; NgxO&Zp //if(count>4) I7Zq}Pxa // siteStop(); kPJ~X0Fr{t } ?UK:sF|(O Yq;&F0paK MVAc8d S System.err.println("文件下载结束!"); OK\]*r } M(S{1|,V catch(Exception e){e.printStackTrace ();} # U`&jBU } }#YQg0( Q-Y@)Mf~?0 \UQ],+H //获得文件长度 LW?2}`+ public long getFileSize() /nM*ljfB\ { UCF[oO>v int nFileLength = -1; '%Dg{ zL try{ ZOHRUm URL url = new URL(siteInfoBean.getSSiteURL()); ^'Zh;WjI7 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); SRk7gfP*q httpConnection.setRequestProperty("User-Agent","NetFox"); r %xB8e9 j?J=w=.Nx ^K>pT}u int responseCode=httpConnection.getResponseCode(); Na;t#, if(responseCode>=400) N[{]iQ { 4H9xO[iM processErrorCode(responseCode); 3mA/Nu_ return -2; //-2 represent access is error Ib(,P3 } -9Xw]I#QR p,^>*/O> dh,7iQ
s String sHeader; ~$ WQ"~z |
VRq$^g *EE|?vn for(int i=1;;i++) bgXc_>T6_y { 2 ^ kn5 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); s.ey!ew //Utility.log(in.readLine()); ^ N_`^m sHeader=httpConnection.getHeaderFieldKey(i); ZArf;&8 if(sHeader!=null) n(# c`t* { F~P/*FFK if(sHeader.equals("Content-Length")) c$.T<r)Z { P#9-bYNU nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); JgZdS-~ break; "U{mMd!9L } qZc)Sa.S } Ot"(uW4$[ else .=aMjrME break; @%7/2k } X)FQ%(H< } g&8 .A( catch(IOException e){e.printStackTrace ();} W.sD2f catch(Exception e){e.printStackTrace ();} ,|>nF;.Y otZ JY) vKV{
$| Utility.log(nFileLength); (BhL/A 4 Ut=0~x.=< M,Po54u return nFileLength; xKisL=l6Y } dR?5$V( s={X-H< 2
.;}pU!S~R //保存下载信息(文件指针位置) JG1LS$p^ private void write_nPos() _4A&%> { ]n/jJ_[ try{ m';|}z' output = new DataOutputStream(new FileOutputStream(tmpFile)); s
UvKA0 output.writeInt(nStartPos.length); ,7/\&X<`B for(int i=0;i<nStartPos.length;i++) 4v i B=> { ;+!xZOmm // output.writeLong(nPos); sd7Y6?_C output.writeLong(fileSplitterFetch.nStartPos); i@%L_[MtA output.writeLong(fileSplitterFetch.nEndPos); $jDD0<F.# } ;vZ*,q6 output.close(); ug>]U ~0 } E ,Dlaq catch(IOException e){e.printStackTrace ();} )z|_*||WU^ catch(Exception e){e.printStackTrace ();} J\9jsx!WQ } .|tQ=l@I iNMLYYq]l *GB$sXF //读取保存的下载信息(文件指针位置) 8cequAD private void read_nPos() g8B&u u # { P/HHWiD`D try{ ],WwqD= DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); k0R,!F int nCount = input.readInt(); [ )B@ nStartPos = new long[nCount]; puk4D nEndPos = new long[nCount]; _LLW{^V for(int i=0;i<nStartPos.length;i++) *YMXiYJR { 6NP`P j R nStartPos = input.readLong(); Gf!t< =T nEndPos = input.readLong(); %Gnd"SGs } nT(!HDH input.close(); d;IJ0xB+by } F12S(5Z0% catch(IOException e){e.printStackTrace ();} 6i55J a catch(Exception e){e.printStackTrace ();} 4h[2C6
\+` } WIhIEU7 / _q2`m 3Bu D/bs private void processErrorCode(int nErrorCode) =2Pz$q*ub { MX%|hIOpr System.err.println("Error Code : " + nErrorCode); }"!6Xm } ,<IL*=a pvK \fSr ](idf(j //停止文件下载 99=[>Ck)G public void siteStop() GA}hp% { kjQIagw bStop = true; })Ix.!p for(int i=0;i<nStartPos.length;i++) C8O7i[uc fileSplitterFetch.splitterStop(); w/)e2CH ;w>Q{z KI^ q 5D ? } lU>)n } ci#Zvhtkr //负责部分文件的抓取 ~M|NzK_9 **FileSplitterFetch.java O p! */ <<~lV5 package NetFox; ^*j[&:d y?rK5Yos T(t
<Ay?c import java.io.*; [0(
E>vm import java.net.*; xV
}:M Wl@0TUK S S7D1 public class FileSplitterFetch extends Thread { IX > j8z[ 96^1Ivd m7bn%j-{$f String sURL; //File URL |^>L`6uo long nStartPos; //File Snippet Start Position ^$g],PAY long nEndPos; //File Snippet End Position W,L>'$#pM int nThreadID; //Thread's ID U/v"?pg[ boolean bDownOver = false; //Downing is over Z)b)v boolean bStop = false; //Stop identical ?et0W|^k FileAccessI fileAccessI = null; //File Access interface "oKj~:$ Vf#oKPP1 F5om-tzy public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 4 @ydK { ;+#za?w this.sURL = sURL; M,=@|U/B this.nStartPos = nStart; {g23[$X]N this.nEndPos = nEnd; I{Y
{ nThreadID = id; xP|%rl4 fileAccessI = new FileAccessI(sName,nStartPos);//定位 c+YYM
:S } R
oF v{\n^|=]) N23+1 h public void run()
B[2h { _
cHV3cz while(nStartPos < nEndPos && !bStop) Dg];(c+/ { `i_L?C7 h<!khWFS e2_r0I^C try{ -hJ>wGI URL url = new URL(sURL); HquB*=^xh HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); nATfmUN
L httpConnection.setRequestProperty("User-Agent","NetFox"); \I`=JKYT String sProperty = "bytes="+nStartPos+"-"; 6>P httpConnection.setRequestProperty("RANGE",sProperty); 8{U]ATx'( Utility.log(sProperty); !Barc,kA C$]%1<-Iv] W6!4Qyn InputStream input = httpConnection.getInputStream(); U- U V<} //logResponseHead(httpConnection); , L AJ &d &oP
{O3oUE+ byte[] b = new byte[1024]; d~xU?)n) int nRead; F"HI>t)> while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) i32_ZB Z?y { (Mire%$h nStartPos += fileAccessI.write(b,0,nRead); '"G
%0y //if(nThreadID == 1) WP#_qqO // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ""U?#<}GD } t,r&SrC 8=zM~v) p7ns(g@9 Utility.log("Thread " + nThreadID + " is over!"); W@uH!n>k bDownOver = true; 3Wtv+L7Br //nPos = fileAccessI.write (b,0,nRead); `!>dbR&1 } Jr*S2z<* catch(Exception e){e.printStackTrace ();} U{:(j5m } ky
lr f4= } ^|hRu{QW z)?#UdBQv %N AFU/& //打印回应的头信息 1RUbY>K#U public void logResponseHead(HttpURLConnection con) (fI&("; t { #B.w7y5* for(int i=1;;i++) KE)D =P { 3I{ta/( String header=con.getHeaderFieldKey(i); )su
<Ji* if(header!=null) IP4b[|ef //responseHeaders.put(header,httpConnection.getHeaderField(header)); TF iM[ Utility.log(header+" : "+con.getHeaderField(header)); &s}@7htE else %(7wZ0Z break; <:yq~? } 6^z\;,p } i[BR(D&l_p _XO)`D~ ?M{6U[? public void splitterStop() {J6sM$aj { ^TCJh^4na bStop = true; j[=_1~u} } pGcx
jm A%czhF J7xT6Q= } :`"T Eif 6x zR*~7 K7R])*B.~ /* 3K20f8g **FileAccess.java w)y9!li *//文件访问(定位,写) _I}L$ package NetFox; gBiQIhz import java.io.*; r(2'0JQ i,b7Ft:F& { `|YX_HS public class FileAccessI implements Serializable{ <W[8k-yOV` sq6% =(q(? //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Sph"w08 RandomAccessFile oSavedFile; bZlLivi long nPos; 1S.e5{ 2Q'XB 08n%%
F public FileAccessI() throws IOException
a):Run { jvQ+u L this("",0); wj:3 } HtXBaIl\ 0<]!G|;| Zow^bzy4 public FileAccessI(String sName,long nPos) throws IOException !m:PBl5
{ ![D,8]GD oSavedFile = new RandomAccessFile(sName,"rw"); 'UG}E@G this.nPos = nPos; ]!J3?G oSavedFile.seek(nPos); {$TB#=G } WyJfF=< A=[f>8 <Ibr.L] public synchronized int write(byte[] b,int nStart,int nLen) ht)*Ync { IEr`6|X int n = -1; ,4T$ try{ 'e)ze^Jq oSavedFile.write(b,nStart,nLen); yc4f\0B/ n = nLen; y#Sw>-zRq } 0B:{4Lsn& catch(IOException e) |3lAye,t)a { <UHWy&+z& e.printStackTrace (); |b@A:8ss } B+[Q$Q" >sS:x,- l
\n:"*To return n; MdboWE5i } :-@P3F[0 d*:qFq_ Olh%"=*; } wQuaB6E sU_4+Mk ]fS~N9B /* &OR*r7*Z **SiteInfoBean.java w[vIPlSdS */ x4A~MuGU package NetFox; wQS w&G $
5-2cL @`*YZq>p public class SiteInfoBean { LuQ
M$/i +/lj~5:y Q
pc^qP^- private String sSiteURL; //Site's URL 5@rqU(]< private String sFilePath; //Saved File's Path )w?$~q private String sFileName; //Saved File's Name M~Dc5\T private int nSplitter; //Count of Splited Downloading File f#Oz("d %=O!K>^vt< 4^}PnU7z public SiteInfoBean() ef;="N {//nSplitter的缺省值为5 'xI+kyu //default value of nSplitter is 5 c Yn}we}7 this("","","",5); N6
(w<b } &r%^wfp r9'H7J 92_H!m/ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 'R5l
=Wf { WWD@rn sVf sSiteURL= sURL; moI<b\G@ sFilePath = sPath; _7HJ' sFileName = sName; OiEaVPSI; this.nSplitter = nSpiltter; )g^Ewzy^X ly5L-=Xb M@[gT?mv1 } zVLi Y6;9j=[ G'C^C[_W public String getSSiteURL() J|8YB3K, { y'wW2U/1- return sSiteURL; '=Y~Ir+ } P>Rqy 7+r5?h| .[85<"C public void setSSiteURL(String value) <Py/uF| { -7VV5W sSiteURL = value; e1 }0f8% } nW*Oo|p~= zb)SlR HD|)D5wH| public String getSFilePath() 4c@F.I { 'E8Qi'g return sFilePath; w.-i !Ls } 6x8|v7cMH wIHz TL %d\+(:uu/ public void setSFilePath(String value) iPYlTV { wf$ JuHPt sFilePath = value; (W/UR9x)|d } e2ZUl` {g L KR,CPz ,R6$SrNcd public String getSFileName() ZWEzL$VWi { F4gc_>{| return sFileName; !qve1H4d2 } t4f\0`jN VO?NrKyeW rrRC5h
public void setSFileName(String value) "evV/Fg( { &"n9,$ sFileName = value; SVz.d/3Y } }CqIKoX. lI<8)42yq kO"aE~ public int getNSplitter() -e\56%\~_ { 4;{CR. D return nSplitter; f#b[KB^Z,2 } GdY^}TJrh "S#hzrEdYI zH4#\d public void setNSplitter(int nCount) 7J/3O[2 { A*;h}\n nSplitter = nCount; mq9&To! } 6*
w;xf } _
RT}Ee}Y [wYQP6Cyy @S):a`J /* HEN9D/O= **Utility.java U%l{>*q */ .C?g nOq package NetFox; I]1fH .?NAq[H% `rQl{$9IC public class Utility { ? GW3E m!(K +R$KEGu~0Y public Utility() Ne_>%P|I_ { Jq)k?WS x|5/#H 5Px_vtqP } OD|&qsbL i[J', //线程睡眠 %R>MSSjvr public static void sleep(int nSecond) GjBQxn { R?I3xb try{ +__Rk1CVh Thread.sleep(nSecond); S0yT%V } uM#/ catch(Exception e) mQJ GKh&Pk { 1qF.0 e.printStackTrace (); XwMC/]lK< } d?.x./1[qi } R\?!r4 ysPW< //日志 24fWj?A| ^ public static void log(String sMsg) { q<l]jn9 { v>R.ou( System.err.println(sMsg); TmiQq'm[b } [XK"$C]jHJ &5<lQ1 #$E
vybETx public static void log(int sMsg) ,5:86'p { +0DIN4Y(4 System.err.println(sMsg); C54)eT6 } _u;
UU$~
} HL]?CWtGP \Qn8"I83AV P2kZi=0 /* huIr*)r&p **TestMethod.java OMU#Sx!6 */ {[+gM? package NetFox; LtBH4A Ql
1# l:Q Mv3Ch'X[ public class TestMethod { r{_'2Z_i <[bDNe["? I\_ R&
v public TestMethod() ;z#9>99rH { ///xx/weblogic60b2_win.exe {JJ`|*H$_ try{ *(rE< SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); l{4\Wn Va //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); * ?K=;$ SiteFileFetch fileFetch = new SiteFileFetch(bean); (ym)q#^ fileFetch.start(); I$&/?ns@O } PhQD}|S catch(Exception e){e.printStackTrace ();} M}>q> JQqDUd frt?*|: } i y 5 ZpyRvDz tznT*EQr public static void main(String[] args) jWz-7BO { 1N&U{#4 new TestMethod(); U&NOf;h$ } nJnan,`W } FYJB.lAT 点击下载更多相关资料
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