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/* b$R>GQ?# **SiteFileFetch.java >qF KXzI */ V2FE|+R%g package NetFox; |I\A0a a import java.io.*; C-Fp)Zs{0 import java.net.*; ''v1Pv- 3+|6])Hi1 Jj6kZK public class SiteFileFetch extends Thread { (Z"Xp{u aq5<Ks `r
.V.N^8(:a SiteInfoBean siteInfoBean = null; //文件信息Bean &HXSO,@ long[] nStartPos; //开始位置 >A,WXzAK}S long[] nEndPos; //结束位置 ABHZ)OM FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ro1' L1: long nFileLength; //文件长度 }\0"gM boolean bFirst = true; //是否第一次取文件 5nj~RUK boolean bStop = false; //停止标志 _@OYC< File tmpFile; //文件下载的临时信息 W"-nzdAJ5 DataOutputStream output; //输出到文件的输出流 F>b6fUtR `2fuV]FW //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) f.P( {PN public SiteFileFetch(SiteInfoBean bean) throws IOException
yY| . { 8_,ZJ9l; siteInfoBean = bean; ,){0y%c#y //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); R]Yhuo9,&n tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); aXJe"IT.u if(tmpFile.exists ()) y*(YZ zF { UA8!?r-cR bFirst = false; ww,c)$ read_nPos(); >ATW/9r } OX`n`+^D else f!J^vDl { 8
KkpXaz nStartPos = new long[bean.getNSplitter()]; F:@Ixk?E nEndPos = new long[bean.getNSplitter()]; 4AM*KI } h[8y$.YsC S }n;..{ ~ 9;GD4 %pp+V1FH } J7_H.RPa
flB,_ E&+^H
on public void run() :}JZKj!}M { B~NC //获得文件长度 DsX>xzM //分割文件 `-H:j:U{ //实例FileSplitterFetch eI}VH BAz //启动FileSplitterFetch线程 (6BCFl:/Q< //等待子线程返回 eFio, try{ 1pb;A;F,A if(bFirst) g,:Nzb { AVr!e
nFileLength = getFileSize(); DOerSh_0W if(nFileLength == -1) K|G$s { 88>Uu!M=f System.err.println("File Length is not known!"); >>$|,Q-. } y2R=%EFh6 else if(nFileLength == -2) ]K7 64} { [!&k?.*;< System.err.println("File is not access!"); 0'hx w3# } )!d1<p3 else OQ7c|O { ?X'*
p<` for(int i=0;i<nStartPos.length;i++) C.E>) { .dCP8| nStartPos = (long)(i*(nFileLength/nStartPos.length)); S7a6ntei } u mlZ(??. for(int i=0;i<nEndPos.length-1;i++) pU ]{Z( { @6q$Zg/ nEndPos = nStartPos[i+1]; ? ~Zrd } F?} *ovy nEndPos[nEndPos.length-1] = nFileLength; 8 uxFXQ } Z5Ihc%J^ } RuNH
(>Eb #`4^zU) ~{YgM/c|dt //启动子线程 MNqyEc"" fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; #L.}CzAz for(int i=0;i<nStartPos.length;i++) eH955[fVd4 { ?ev G=S4> fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +)JqEwCrq siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), pMp9O/u% nStartPos,nEndPos,i); W<91m* Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); j{R|]SjW2H fileSplitterFetch.start(); ^3|$wB= } WlQ=CRY // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~cBc&u:" siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ~e<'t4 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", #}7m'F nEndPos = " + nFileLength); |D`b7h // fileSplitterFetch[nPos.length-1].start(); z%3"d0 Qz) 8eIO: DUKmwKM"k //等待子线程结束 %4|}&,%%r //int count = 0; pZ~>l=- //是否结束while循环 ?VZXJO{^ boolean breakWhile = false; _@pf1d$
sq(Ar(L< X,EYa>RSy_ while(!bStop) liw 9:@+V { gQd=0"MV write_nPos(); `V):V4!j), Utility.sleep(500); w+9C/U;|s breakWhile = true; &iiK ZZ`_o cw]>a&d ;=VK_3" for(int i=0;i<nStartPos.length;i++) =R;1vUio { *_/eAi/WG if(!fileSplitterFetch.bDownOver) 4a.e
,gitf { m)|.:sj breakWhile = false; O4d^ig-xaH break; zHoO?tGf } z?uQlm*We } $F@L$&~ if(breakWhile) w4fJ`, break; ds$ \vSd 4R*<WdT( zGL<m0C //count++; N<Z)b!o%u //if(count>4) U~#^ ^ // siteStop(); _/%]: } @@{_[ir ]i,Mq `YmI' System.err.println("文件下载结束!"); vi! r8k } H&yFSz}6a catch(Exception e){e.printStackTrace ();} dy6F+V\DG } ^I'Lw j^$3vj5E[ !: EW21m //获得文件长度 x U13fl public long getFileSize() kJ#[UCqzM { qSC~^N` int nFileLength = -1; zN)|g try{ q(&^9" URL url = new URL(siteInfoBean.getSSiteURL()); #}t1 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *<.WL"Qhl httpConnection.setRequestProperty("User-Agent","NetFox"); ??\*D9rCn ."F'5eTT~ ^aD/ . int responseCode=httpConnection.getResponseCode(); ^Z-.[Y if(responseCode>=400) 3<jAp#bE { S4 k^&$; processErrorCode(responseCode); :@QK}qFP return -2; //-2 represent access is error h$aew63 } TRySl5jx@ e}?1T7NPG] XC7Ty'#"KX String sHeader; *,pZ fc XUQW;H s.p1L for(int i=1;;i++) 5Aa31"43n { hyk|+z`B //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); MfNpQ: ]c\ //Utility.log(in.readLine()); a9?
v\hG sHeader=httpConnection.getHeaderFieldKey(i); j1;_w if(sHeader!=null) EU^}NZW&v: { M\\e e3Ih if(sHeader.equals("Content-Length")) r}_Lb.1] { IFC%%It5, nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); XQ0#0<
break; Qr|N) } C;d|\[7Z } y"|K
|QT else >}dTO/ break; #514a(6 } v2M"b?Q } e?^\r)1
catch(IOException e){e.printStackTrace ();} HQ|o%9~ catch(Exception e){e.printStackTrace ();} HO%E-5b9 G|QUujl 5';/@M Utility.log(nFileLength); ~8H&m,{j
LaIW,+ Eu`2w%qz return nFileLength; BB2_J=wA } xQNw&'|UU tsTR2+GZS D rF //保存下载信息(文件指针位置) VZT6;1TD$8 private void write_nPos() ~
V@xu{ { :DOr!PNA try{ {f`lSu output = new DataOutputStream(new FileOutputStream(tmpFile)); [+hy_Nc$ output.writeInt(nStartPos.length); H$NP1^5! for(int i=0;i<nStartPos.length;i++) GN:Ru|n { +8LM~voB // output.writeLong(nPos);
Pcs^@QP output.writeLong(fileSplitterFetch.nStartPos); wFK:Dp_^ output.writeLong(fileSplitterFetch.nEndPos); CTh1+&Pa } \]Y\P~n output.close(); 0OleO9Ua } WW@JVZxK catch(IOException e){e.printStackTrace ();} 3+CSQb8 catch(Exception e){e.printStackTrace ();} 6V'wQqJ } %/{IssCR7 Y5nz?a #5'c\\?Q //读取保存的下载信息(文件指针位置) =]=B}L` private void read_nPos() ??%)|nj. { X4d Xm>*?= try{ bin6i2b DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); J}x>~?W int nCount = input.readInt(); 7[ZkM+z! nStartPos = new long[nCount]; sx-EA&5-9k nEndPos = new long[nCount]; th5,HO~ for(int i=0;i<nStartPos.length;i++) n?y'c^ { m(2G*} nStartPos = input.readLong(); L_tjcfVo nEndPos = input.readLong(); z[WC7hvU } 5."5IjZu input.close(); ]XmQ]Yit } zt7_r`#z catch(IOException e){e.printStackTrace ();} v*&Uk'4E catch(Exception e){e.printStackTrace ();} ^{),+S } 9uuta4&uI Ya~ "R#Uy *
eA{[ private void processErrorCode(int nErrorCode) =YWT|%^uX { U5|B9%:& System.err.println("Error Code : " + nErrorCode); +2-
qlU } Bx+d3 A|2 <A
! )J;ny!^2 //停止文件下载 6,B-:{{e" public void siteStop() smQ4CLJ { N2ni3M5v bStop = true; f_oq1 W)9 for(int i=0;i<nStartPos.length;i++) ZH\0=l) fileSplitterFetch.splitterStop(); cN62M=** Hr(6TLNw 5i|s>pD4z1 } DNmb[ } Vre=%bGw //负责部分文件的抓取 VK9Q?nu **FileSplitterFetch.java Kl2}o|b */ :qBGe1Sv( package NetFox; 9H>BWjS +-U@0&Y3M p=2zS. import java.io.*; R|-6o)$ import java.net.*; {z=j_;<] P= e4lF. ]Qd{ '}+ public class FileSplitterFetch extends Thread { b9`i Z 5bXHz5i F{;;
: String sURL; //File URL Bw6 L;Vu long nStartPos; //File Snippet Start Position Hc M~ long nEndPos; //File Snippet End Position kQy&I3 int nThreadID; //Thread's ID JfbKf~g boolean bDownOver = false; //Downing is over D@#0 dDT boolean bStop = false; //Stop identical z*RSMfRW FileAccessI fileAccessI = null; //File Access interface c&
3#-DNI F,Q?s9s /oFc03d public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException #Gd7M3 { ("OAPr\2dw this.sURL = sURL; GYd]5`ri this.nStartPos = nStart; eI0F!Yon this.nEndPos = nEnd;
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nThreadID = id; mGO>""<: fileAccessI = new FileAccessI(sName,nStartPos);//定位 ujx@@N } +tIz[+u 3524m#4&@ :\mRtVH public void run() _PV*lK= { _|X7
n~ while(nStartPos < nEndPos && !bStop) G,=F<TnI' { Z2#`}GI_m 3?@?-q2g Z^*NnL.' try{ Y87XLvig} URL url = new URL(sURL); {c@G$ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); }a ^|L"
httpConnection.setRequestProperty("User-Agent","NetFox"); qi&D+~Gv! String sProperty = "bytes="+nStartPos+"-"; 8 aZ$5^z httpConnection.setRequestProperty("RANGE",sProperty); N 'i,> Utility.log(sProperty); ;\x~ '@ nkRK+~> LQqfi
~ InputStream input = httpConnection.getInputStream(); (UGol[f< //logResponseHead(httpConnection); 3{e'YD~hP #]y5zi @cIgxp byte[] b = new byte[1024]; ' S ,2 int nRead; w.uK?A>W, while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) U(*yL- { %'0&ElQ nStartPos += fileAccessI.write(b,0,nRead); =!CU $g //if(nThreadID == 1) t8/%Dgu // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Bc<n2 C0 } @VK6JjIq 88 l,&2q OJpj}R Utility.log("Thread " + nThreadID + " is over!"); 8teJ*sz bDownOver = true; G6Nb{m //nPos = fileAccessI.write (b,0,nRead); #tDW!Xv? } Kam]Mn' catch(Exception e){e.printStackTrace ();} YE\K<T
jH } 1TZPef^y } 0x ~`5h NR3`M?Hjf DP*@dFU" //打印回应的头信息 XYAmJ public void logResponseHead(HttpURLConnection con) rwgsXS8W6 { "hPCQp`Tj for(int i=1;;i++) V!&P(YO: { Qxt@V String header=con.getHeaderFieldKey(i); -DCa
if(header!=null) ,{KCY[}| //responseHeaders.put(header,httpConnection.getHeaderField(header)); Q7GY3X*kA Utility.log(header+" : "+con.getHeaderField(header)); !d8A else p`P~i&_ break; 6(KmA-!b(O } EB,4PEe: } af'@h: {Uq:Xw 0^&!6R public void splitterStop() fu]N""~ { 9 Cvn6{ bStop = true; o`6|ba } O+"ac /r :(p)1=I E FY@Y[ } &=Y e6 f[ h{_*oBa j@| `f((4 /* Ik~1:D]f **FileAccess.java "HlgRp]u *//文件访问(定位,写) 'jjb[{g^}} package NetFox; ][7p+IsB import java.io.*; >]?H`>4( =k{`oO~:9+ GwLFL.Ke public class FileAccessI implements Serializable{ ]KuMz p! o2uj =Gnx //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Xy7Z38G RandomAccessFile oSavedFile; P8I*dvu _ long nPos; n]N 96oD YnTB&GPxl e@n!x}t8 public FileAccessI() throws IOException KnzsHli,~k { >M;u*Go`QO this("",0); Cifd21v4 } _[K#O,D, 1*Ar{:+ua n&Yk< public FileAccessI(String sName,long nPos) throws IOException #T3h}= { XDz5b., oSavedFile = new RandomAccessFile(sName,"rw"); %XTA;lrz this.nPos = nPos; Z|*!y]We oSavedFile.seek(nPos); :c]`D> } pq!%?m] RBGX_v? z@VP:au public synchronized int write(byte[] b,int nStart,int nLen) G/?~\
}:s
{ vqNsZ 8|` int n = -1; m~`>`4 try{ Is.WZYa oSavedFile.write(b,nStart,nLen); *}!MOqP n = nLen; [QczlwmO } K%j&/T j1 catch(IOException e) Q^_/By@ { 7;}l\VXHm e.printStackTrace (); kQv*eZ~ } 2eP;[o xUWr}j4; , c;eN return n; NgZUnh3{ } rOfK~g,X 6oL1_) /^7iZ|>:M: } ]MTbW=*}ED 5g
;ac~g &h~aChJ /* 8v92Ng7 **SiteInfoBean.java [rYT */ v3RcwySk package NetFox; O&Z'r v."Dnl /SR^C$h'I public class SiteInfoBean { (9RslvKL cma*Dc F?4(5 K private String sSiteURL; //Site's URL HAB#pd9 private String sFilePath; //Saved File's Path RDQ^dui private String sFileName; //Saved File's Name eiMH['X5 private int nSplitter; //Count of Splited Downloading File yJJ4~j){l
*~VxC{ h{iEZ# public SiteInfoBean() m7|RD]q& {//nSplitter的缺省值为5 B|{I:[ //default value of nSplitter is 5 ~,gXaw this("","","",5); % 4 ~l } L/r@ S' NucM+r1P e$/B_o7( public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) lhLGG { !]?$f= sSiteURL= sURL; 8g/F)~s^F sFilePath = sPath; *,WP,-0 sFileName = sName; ^y_fRP~ this.nSplitter = nSpiltter; %@J1]E; I=Zx"'Um uQCo6"e } 3`V1XE.; o4^Fo p H#d:kil Ny public String getSSiteURL() 12`_;[37 { C? Zw6M+ return sSiteURL; pxINw>\Qv } &XLD S=j *TdnB'Gd 8\ha@&p public void setSSiteURL(String value) >v5k{Cbp0 { _%@=Uc6V sSiteURL = value; dj9?t } mj,fp2D;% [w\?j, n-;y*kD public String getSFilePath() JC;^--0(z { ]dPZ .r return sFilePath; B5am1y{P# } )h$NS2B` H}0dd" 2ef;NC.&n public void setSFilePath(String value) =([av7 { PH4%R]{8{ sFilePath = value; 9l/EjF^ } 2(YPz|~W V9 }t0$LN -`c:}m public String getSFileName() &lc8G { |BU+:+ return sFileName; 4/>Our 5 } uZ6d35MJ o@E/r.uK @Cq? :o< public void setSFileName(String value) kUHE\L.Y] { 5ua?I9fY sFileName = value; M~T.n)x2 } {==pZpyyh i^z`"3#LE B)SLG]72f public int getNSplitter() }qPhx6nP { TJ@Cj y% return nSplitter; f>Td)s1
M } ph:3|d PFSLyV* h+7># *DH public void setNSplitter(int nCount) *=F(KZ { qB6dFl\ ( nSplitter = nCount; cSP*f0n,eo } M++0zhS } ,%"xH4d tl8O6`<Z m 40m<@ /* Y#V8(DTyH **Utility.java &rq{v!=7 */ D@Da0 package NetFox; `|e!Kq?#Q 'w/qcD- h=VqxGC& public class Utility { #} ,x @]p nY-* i!H <EX7WA public Utility() czWw~'." { h,t|V}Wb "l~Ci7& !a ,32xcj}j)r } {[G`Z9]z&- dz9Y}\2tf //线程睡眠 ;6;H*Y0,|E public static void sleep(int nSecond) {+T/GBF-K= { R'K/t|MC try{ D>ef Thread.sleep(nSecond); T.&7sbE_ } (RL>Hn;. catch(Exception e) mX# "+X| { LgqGVh3\s e.printStackTrace (); *7gT}O;p 5 } h BMH)aU } !>.vh]8g I2Ev~! //日志 Fe=8O ^\ public static void log(String sMsg) D@54QJ< { &_-](w` System.err.println(sMsg); ]?l{j } HxwlYx,4 *YV
S|6bs >l1r,/\\ public static void log(int sMsg) 0&w0aP`Y { Y*YFB|f? System.err.println(sMsg); ISqfU]>[ }
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/* t8J/\f= **TestMethod.java i.a _C'<$ */ >.%4~\U package NetFox; pa/9F[ vs9?+3 ;IP~Tb]& public class TestMethod { ]#eh&jw 5G*II_j C8b''9t. public TestMethod() G?)vWM`j { ///xx/weblogic60b2_win.exe ;Rnhe_A. try{ ';YgG<u SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); T 1Cs>#) //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); $Xf (^K SiteFileFetch fileFetch = new SiteFileFetch(bean); f6ZZ}lwaV fileFetch.start(); =Viy^ieN$ } 4('JwZw\! catch(Exception e){e.printStackTrace ();} sg?@qc=g Z6s5M{mE "dCzWFet } Uene=Q6> i57(
$1. 7sV/_3H+ public static void main(String[] args) Go8F5a@j { -F`he=Ev9 new TestMethod();
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