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/* 8`Q8Mct$< **SiteFileFetch.java oJK1~;: */ y-m<&{q package NetFox; c}kZx1 import java.io.*; 'e_^s+l)a import java.net.*; fWhw I+ m{9m.~d !FX0Nx=oi public class SiteFileFetch extends Thread { A6v02WG_1T \-a^8{.^E kngkG|du SiteInfoBean siteInfoBean = null; //文件信息Bean *kY\,r&!P long[] nStartPos; //开始位置 W(Z_ac^e[ long[] nEndPos; //结束位置 RMUR@o5N FileSplitterFetch[] fileSplitterFetch; //子线程对象 bq/m?; long nFileLength; //文件长度 TCYjj:/ boolean bFirst = true; //是否第一次取文件 |6'(yn boolean bStop = false; //停止标志 X1?7}VO File tmpFile; //文件下载的临时信息 ZgQ4~s DataOutputStream output; //输出到文件的输出流 qqA(Swe)T A&*lb7X //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) j9)P3=s public SiteFileFetch(SiteInfoBean bean) throws IOException q4'szDYO2 { fDt#<f 4; siteInfoBean = bean; }R4%%)j(Vj //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); CG*eo!Nw tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); nd*9vxM if(tmpFile.exists ()) c ]M!4. { Aw9se"d bFirst = false; <aR9,: read_nPos(); JwG$lGNJ } T;K@3]FbX else @[h)M3DFd { GEj/Z};;[b nStartPos = new long[bean.getNSplitter()]; 1;?n]L`T nEndPos = new long[bean.getNSplitter()]; iU"jV*P] } Aq674 <wWZ]P2] KU# w% s ;EwAd( } 11t+
a,fM BwMi@r
= n6D9f~8" public void run() XgL-t~_ { "#1KO1@G //获得文件长度 2f>G //分割文件 2yZ/'}Mw //实例FileSplitterFetch ,l/~epx4v) //启动FileSplitterFetch线程 \) DJo //等待子线程返回 .<&o, D try{ g(Q)fw if(bFirst) Lt`d
{s { `/?XvF\ nFileLength = getFileSize(); /$
Gp<.z if(nFileLength == -1) Bh3N6j+$d { &/QdG= r + System.err.println("File Length is not known!"); ,dn6z#pb+ } >%Rb}Ki4 else if(nFileLength == -2) kS_oj { p1~u5BE7O System.err.println("File is not access!"); KFQ 4vavNh } v:/+OzY else LpRl!\FY$ { 1eQfc{[g for(int i=0;i<nStartPos.length;i++) CB V(H$d { Mn$w_Z? nStartPos = (long)(i*(nFileLength/nStartPos.length)); 1^&qlnqH } 8 KDF*%7' for(int i=0;i<nEndPos.length-1;i++) eh4` a<gC { Cka&b nEndPos = nStartPos[i+1]; Jv_KZDOdk } NQBa+N nEndPos[nEndPos.length-1] = nFileLength; q8&2M } >
mI1wV[ } X}"Ic@8 ":=\ci]e% 4}0DEH.Vx //启动子线程 z}Y23W&sX fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9Q\CJ9 for(int i=0;i<nStartPos.length;i++) hG1\ { w=e_@^Fkx fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [/Q .MmnL siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), RWyDX_z#< nStartPos,nEndPos,i); </xz
V<Pi Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); etnq{tE5 fileSplitterFetch.start(); M1nH!A~o } 9Yu63s ia // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 9)c{L<o}T siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); WY>r9+A?W // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", *[VO03
nEndPos = " + nFileLength); n8h1SlK08 // fileSplitterFetch[nPos.length-1].start(); C8^h`B9z&I kHWW\?O g+(Cs //等待子线程结束 PhUG}94 //int count = 0; ojmF:hR" //是否结束while循环 6YErF| boolean breakWhile = false; hk5[ N= ]81t~t9LQ I,7~D!4G while(!bStop) bQ%6z}r { f$7Xh~ write_nPos(); "+0Yhr ? Utility.sleep(500); Gy;>.:n breakWhile = true; #'5C*RO 8-JOfq}s g4eEkG`XTS for(int i=0;i<nStartPos.length;i++) d#tqa`@~ { ,(&p"O": if(!fileSplitterFetch.bDownOver) |_6V+/?"?` { UO1WtQyu,H breakWhile = false; 9#;GG3 break; sn!E$ls3O } %#_"Ie } y
4
wV]1 if(breakWhile) lRk) break; "_f~8f`y K'6NW:zp~ i]cD{hv //count++; _YK66cS3E/ //if(count>4) X[SdDYMY // siteStop(); $q$G } @sr~&YhA Sux/=' ia9=&Hy]) System.err.println("文件下载结束!"); 7^oO
N+=d } h&|S* catch(Exception e){e.printStackTrace ();}
DXa!"ZU } o){\qhLp a 23XrX 4\_~B{kzZ //获得文件长度 BNw};.lO public long getFileSize() hEh` cBO { _'*Vcu`Y int nFileLength = -1; o*t4zF&n try{ L-9AJk>V URL url = new URL(siteInfoBean.getSSiteURL()); S{Q2KD HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 5(\H:g\z httpConnection.setRequestProperty("User-Agent","NetFox"); 5r` x\ sd5)We ~Fe$/*v int responseCode=httpConnection.getResponseCode(); &} rmDx if(responseCode>=400) %TeH#%[g>\ { %Q080Ltet processErrorCode(responseCode); t?(fDWd|- return -2; //-2 represent access is error yno X=#` } *'n L[] ]:r(U5 # cakwGs_{ String sHeader; 4c]=kb GW #z5$_z?_ Vo;0i$ for(int i=1;;i++) _u9bZ' { 0t?g! //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); X@Bg_9\i //Utility.log(in.readLine()); )tv~N7 sHeader=httpConnection.getHeaderFieldKey(i); ^4~?]5Y\ if(sHeader!=null) 7NMy1'-q { 6W/uoH=; if(sHeader.equals("Content-Length")) MAcjWb~f { 4g)$(5jI} nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); emMk*l, break; _)Ad%LPsd7 } ) E*- } 2@Zw#2|] else ;3\'}2^|l break; hiEosI
C } T`2a) } Rjn%<R2nW catch(IOException e){e.printStackTrace ();} yS.)l catch(Exception e){e.printStackTrace ();} b=kY9!GN,v m>^vr7 tkP& =$ Utility.log(nFileLength); |,T"_R_K k{
$,FQ4 ?!u9=?? return nFileLength; -HvJ&O.V$ } JYnyo$m/ Jow{7@FG lXRB"z //保存下载信息(文件指针位置) a5/r|BiBK private void write_nPos() i(YR-vYK { g:YUuZ try{ sWKv>bx output = new DataOutputStream(new FileOutputStream(tmpFile)); ;!j/t3#a output.writeInt(nStartPos.length); I9h{fB for(int i=0;i<nStartPos.length;i++) rX22%~1 { "iJAM`Hi // output.writeLong(nPos); L>pSE'} output.writeLong(fileSplitterFetch.nStartPos); AZ
SaI output.writeLong(fileSplitterFetch.nEndPos); k- exqM2x= } l-2lb&n output.close(); f\z9?Z(~ } _6->D[dB catch(IOException e){e.printStackTrace ();} X=? \A{Y catch(Exception e){e.printStackTrace ();} _ucixM# } ; hU9_e p7L6~IN ]dT]25V //读取保存的下载信息(文件指针位置) _8 l=65GW private void read_nPos() ?4t~z 1.f { = gcZ RoL try{ GuF-HP}xM DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ]''tuo2g8 int nCount = input.readInt(); t&-c?&FO\; nStartPos = new long[nCount]; qnzNJ_ `R nEndPos = new long[nCount]; ie/QSte for(int i=0;i<nStartPos.length;i++) I#xhmsF { a?)g>e
HN nStartPos = input.readLong(); n65fT+; nEndPos = input.readLong(); .:/X~{ } UJ`%uLR~ input.close(); @^`5;JiUk } xzRC % catch(IOException e){e.printStackTrace ();} \\/
!I
catch(Exception e){e.printStackTrace ();} w_YY~Af } w$749jGx s%?<:9 /sVmQqVY private void processErrorCode(int nErrorCode) 7A { ">s0B5F7 System.err.println("Error Code : " + nErrorCode); Q8DKU } G+iJS!= "?YpF2pD vf`] //停止文件下载 R xWD>: public void siteStop() ;e~K<vMm;y { *gI9CVfQl bStop = true; -Q!?=JNtQ for(int i=0;i<nStartPos.length;i++) *JaFt@ x fileSplitterFetch.splitterStop(); _xdttO^N s3M#ua#mX *8 ] } 1xwq:vFC. } W*D*\E //负责部分文件的抓取 <zu)=W'R] **FileSplitterFetch.java ,0$b8lb;x/ */ r3.v ^ package NetFox; 1 z[blNs& fVBRP[, xX])IZD import java.io.*; S[uHPYhlA import java.net.*; &S#bLE !Jo.Un7 5TdI public class FileSplitterFetch extends Thread { WTh|7& D%.<}vG II_MY#0X String sURL; //File URL lc0Z fC long nStartPos; //File Snippet Start Position Eb9M;u long nEndPos; //File Snippet End Position j8p'B-yS int nThreadID; //Thread's ID #D!3a%u0 boolean bDownOver = false; //Downing is over =j~}];I boolean bStop = false; //Stop identical kC[nY FileAccessI fileAccessI = null; //File Access interface e 3>k" "i*Gi
\U |m7`:~ow public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException gM3gc; { ^SRa!8z$W this.sURL = sURL; %x7l`.)N this.nStartPos = nStart; N:/$N@"Ge this.nEndPos = nEnd;
( ]o6Pi nThreadID = id; -.WVuc` fileAccessI = new FileAccessI(sName,nStartPos);//定位 P^LOrLmo8 } `o*g2fW! -nT+!3A8 2=NYBOE public void run() Bf88f<Z { 7+u%]D! while(nStartPos < nEndPos && !bStop) 5cQBqH] { _>:g&pS/ Xc5[d`] Q<``}:y|> try{ @kwD$%*0 URL url = new URL(sURL); )Bk?"q HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); z_l3=7R httpConnection.setRequestProperty("User-Agent","NetFox"); L ou4M String sProperty = "bytes="+nStartPos+"-"; T[q-$8U httpConnection.setRequestProperty("RANGE",sProperty); +;[`fSi Utility.log(sProperty); KwQO,($,] PvT8XSlTx! A1ebXXD) InputStream input = httpConnection.getInputStream(); _zmx //logResponseHead(httpConnection); e#HP+b$ q%:Jmi> X0Oq lAw byte[] b = new byte[1024]; Dfhs@ z int nRead; HIa$0g0J while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 5!ReW39c; { fF[ g%?w nStartPos += fileAccessI.write(b,0,nRead); lIFU7g //if(nThreadID == 1) )#ujF~w> // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); nG%j4r ; } 'qd") "^D6%I#T \!V6` @0KC Utility.log("Thread " + nThreadID + " is over!"); N~ozyIP, bDownOver = true; #*]=
%-A //nPos = fileAccessI.write (b,0,nRead); *-Yw0Y[E } 3CHte*NL= catch(Exception e){e.printStackTrace ();} ^c7L!F } anwn!Eqk" } 3 z#;0n} _INUJc 9,c>H6R7 //打印回应的头信息 Q8~pIv public void logResponseHead(HttpURLConnection con) >PJ-Z~O'
{ DJW1kR for(int i=1;;i++) tj&A@\/ { A{o{o++ String header=con.getHeaderFieldKey(i); -?'CUm*Od if(header!=null) FTenXJ/c //responseHeaders.put(header,httpConnection.getHeaderField(header)); `3:%F> Utility.log(header+" : "+con.getHeaderField(header)); _#F'rl6' else .e AC!R break; e4b~s } ,'673PR } NE4fQi?3 !jW32$YTR wg1pt1 ` public void splitterStop() F1=+<]! { )pLq^j bStop = true; W<L6, } HKkf+)%)x dW`D?$(@, #50)D wD } kt#W~n z Y|g#V- +*DX(v"BH /* [s2V-'2 **FileAccess.java u3:Q t2^S *//文件访问(定位,写) TfVD'HAN;l package NetFox; }(K6 YL import java.io.*; \G@6jn1G( wVOL7vh DV\ei") public class FileAccessI implements Serializable{ ,9qB}HG m4wTg
8LJ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 7]j-zv RandomAccessFile oSavedFile; PuJ{!S\T7 long nPos; |mmG
s Z5L1^ I)6Sbt JV^ public FileAccessI() throws IOException }YP7x| { Zbh]OCN this("",0); ] <3?=$ } 1>VS/H` gj,J3x4TK/ ue"?S6 public FileAccessI(String sName,long nPos) throws IOException 5]l7Z35 { E$Pjp oQTf oSavedFile = new RandomAccessFile(sName,"rw"); b6vYM_ Q this.nPos = nPos; TrU@mYnE oSavedFile.seek(nPos); d$rUxqB. } KB R0p&MN Gc!8v}[7J j(C
UYm public synchronized int write(byte[] b,int nStart,int nLen) y32++b! { IWo~s int n = -1; aSkx#mV try{ j&
iL5J; oSavedFile.write(b,nStart,nLen); 0"psKf' n = nLen; -5v.1y=!L } 7EP|X. catch(IOException e) G+ v, Hi1 { ` u\z!x' e.printStackTrace (); hdtnC29$ } ;c-
]bhBB ~po%GoH(K YB
B$uGA return n; M:Y*Tb6w } uy _i{Y| /rxltF3 .k,Jt+ } Kq 4<l 'gZbNg=&[ )d(0Y<e@ /* (vAv^A*i} **SiteInfoBean.java n R\n\
*/ XMEK5Z9Dd package NetFox; 'uf2
nUo n!ZP?]FR [Ba2b: l6v public class SiteInfoBean { HKiVEg 0^}'+t,lc <L/M`(:=k private String sSiteURL; //Site's URL P,/13tZ#3 private String sFilePath; //Saved File's Path J[!x%8m private String sFileName; //Saved File's Name J7ktfyQ0W private int nSplitter; //Count of Splited Downloading File 974eY S@c\|
|rxKCzjm public SiteInfoBean() j!S1Y0CV {//nSplitter的缺省值为5 nR o=J5tY //default value of nSplitter is 5 L8:]`MQ0 this("","","",5); /1 US, } gj[ >p=Wn AJ\VY;m7F oE!hF }O public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) &gWMl`3^*! { L{2b0Zh' sSiteURL= sURL; |I}A>XG sFilePath = sPath; K}PvrcO1 sFileName = sName; (F,(]71Z+ this.nSplitter = nSpiltter; /[Bl E 4='m B:O+*3j } ~>#LOT ` zP:~O (B>)2: T1 public String getSSiteURL() (|g").L { _x\-!&[p return sSiteURL; $R%+* } j6tP)f^tD tLS<0 @A
[)hk&(R public void setSSiteURL(String value) a9#W9eP { u?q&K|
sSiteURL = value; N@cMM1 } W[R]^2QAG hz<|W5 Lzh9DYU6 public String getSFilePath() OM20-KDc5 { _Fy4DVCg return sFilePath; I:F'S# } G%2P 4@DVc7\x$ lir&e
9I+ public void setSFilePath(String value) [urH a { ,3:QB_ sFilePath = value; 4dW3'"R"L } 7'_nc!ME ':,>eL#+uV 3hc#FmLr2b public String getSFileName() uyL72($ { ;e&! return sFileName; HjV\lcK:v } jo_o`j yrO?Np "3@KRb4f public void setSFileName(String value) :tKbz
nd/ { PPN q:, sFileName = value; kfVZ=`p} }
^[en3aQ 7.%f01/i 5+`=t07^et public int getNSplitter() ?#4+r_dP { 0HjJaML return nSplitter; j\!
e9M } /[0F6 F\JLbY{x] B9wp*:. public void setNSplitter(int nCount) O8gfiQqF& { 2.]~*7
nSplitter = nCount; .
/Y&\< } o5>/}wIf } "s% 686Vz 658\#x8| NNgK:YibD /* g+.0c=G( **Utility.java 9-b 8`|s */ (JWv *p package NetFox; C]/&vh7ta rrAqI$6 HQl~Dh0DJ public class Utility { =m~ruZ/ E&'#=K[ =9(tsB gTX public Utility() |IAW{_9)U { {b2 aL7 xLZ bU4 b]w[*<f? } `T=1<Tw c aF!WIvir //线程睡眠 _@~PL>g"p public static void sleep(int nSecond) Z&A0hI4d { I
:@|^PYw try{ l/M[am Thread.sleep(nSecond); ]9s\_A9 } 9l#gMFknI catch(Exception e) l**3%cTb { 2Q}7fht e.printStackTrace (); D!S8oKW } TywK\hH } \TZ|S,FS $D}"k!H //日志 FJ}gUs{m public static void log(String sMsg) |WBZN1W) { Wa<-AZnh System.err.println(sMsg); nn'Af,ko/ } u3ST; **n y! @gEr+O1K( public static void log(int sMsg) AC'lS
>7s { 0X#+#[W System.err.println(sMsg); 6m@0;Ht }
'mJ13 } Bh,Q8%\6 :xtT)w @i{]4rk lv /* {pC\\} **TestMethod.java cl_TF[n? */ G1/Gq.< package NetFox; *{4
ETr7 S}b~_} o[oqPN3$Y public class TestMethod { ]);NnsG c})wD+1 _N@(Y : public TestMethod() w,/6B&| { ///xx/weblogic60b2_win.exe E<k^S{ try{ Qh8C,"a SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); =9<$eLE0 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ]VDn'@uM SiteFileFetch fileFetch = new SiteFileFetch(bean); N8QH*FX/F1 fileFetch.start(); ,_bp)-O G } qX?[mdCHZ catch(Exception e){e.printStackTrace ();} \OY}GRKt j76%UG\Ga djGs~H>;U_ } x)5LT}p WL:0R>0 ^vM_kArA public static void main(String[] args) "&<~UiI { =Epq%,4nG new TestMethod(); He<;4?: } Yt*vqm[WV } ST%
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