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/* ,K9UT#h **SiteFileFetch.java D@^F6am% */ 44W3U~1 package NetFox; -8tA~;p import java.io.*; i`>X5Da5 import java.net.*; -ufmpq. N6J$z\
P ]JD$fS=_ public class SiteFileFetch extends Thread { R&4E7wrdP uf;q/Wr Vd?v"2S(9 SiteInfoBean siteInfoBean = null; //文件信息Bean m_(hCY=Q$ long[] nStartPos; //开始位置 i52R,hz long[] nEndPos; //结束位置 1!f'nS FileSplitterFetch[] fileSplitterFetch; //子线程对象 EORRSP,$2 long nFileLength; //文件长度 \9}5}X_x. boolean bFirst = true; //是否第一次取文件 @qC:% |> boolean bStop = false; //停止标志 c"YK+2 File tmpFile; //文件下载的临时信息 0&.lSwa DataOutputStream output; //输出到文件的输出流 q9
;\B& b;t]k9:"L //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) .HQ<6k:
public SiteFileFetch(SiteInfoBean bean) throws IOException t~M<j|]k { y[|g!9Rp siteInfoBean = bean; v)d0MxSC //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <=inogf tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); o 4b{>x if(tmpFile.exists ()) KB"iF}\P0 { $0*47+f bFirst = false; MzG ryM- read_nPos(); &!a2%%1#N } lBn*G&(P else iTt=aQjd { >1~`tP nStartPos = new long[bean.getNSplitter()]; .]e6TFsrO nEndPos = new long[bean.getNSplitter()]; btF%}<o) } z}8YrVr@ j?,*fp8 u W|x)g11a -*lP1Nbp } V`M,d~:Pr" {^f0RGJg9 Q*C4
q` public void run() zrew:5*uZ { .cF$f4>2 //获得文件长度 2`I;f/Sd //分割文件 "?{yVu~9 //实例FileSplitterFetch d8kwW!m+ //启动FileSplitterFetch线程 e1loI8 //等待子线程返回 BP[U`
! try{ 9Bk}g50$# if(bFirst) be/1-=m { n`}&,UA$4 nFileLength = getFileSize(); N 9&@,3 if(nFileLength == -1) Mak9qaWqF> { BZ<z@DJp System.err.println("File Length is not known!"); GzXP } ]'h)7 else if(nFileLength == -2) #5C3S3e= { %'T>kz *A System.err.println("File is not access!"); 8-5jr_* } 7h]R{ _ else Kk9 8FI0] { ;0!Wd for(int i=0;i<nStartPos.length;i++) ++!E9GU{ { %gMpV nStartPos = (long)(i*(nFileLength/nStartPos.length)); W-PZE|< } -NPkN%h for(int i=0;i<nEndPos.length-1;i++) (bt]GAxb1 { ];d:z[\P nEndPos = nStartPos[i+1]; W>s'4C` } C9H11g7{ nEndPos[nEndPos.length-1] = nFileLength; =(X'c.%i } LXC`Zq\ } e-cb?.WU? gwaC?tf[ /mwr1GU //启动子线程 un^IQMIh fileSplitterFetch = new FileSplitterFetch[nStartPos.length];
_O;~
}N4u for(int i=0;i<nStartPos.length;i++) fJw=7t-t { 56Y5kxmi fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :J`!'{r siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), C)96/k nStartPos,nEndPos,i); i>Bi&azx Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); RpK,ixbtA+ fileSplitterFetch.start(); 7 3z
Y^x } 9H}iX0O // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~}0hN]*G siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); K^vp(2 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", z){UuiUM+= nEndPos = " + nFileLength); !-RpRRR[Co // fileSplitterFetch[nPos.length-1].start(); %H}Y]D~R Mto~ / !$xEX,vj|W //等待子线程结束 K}=8:BaUL //int count = 0; LEngZ~sV/ //是否结束while循环 h!N&gZ[0 boolean breakWhile = false; y]YS2^ wt.{Fqm Mr NOcx& while(!bStop) lMzCDx!m { N"x\YHp write_nPos(); ms\/=96F Utility.sleep(500); ar
qLp| breakWhile = true; y[WYH5&DJ D
,ZNh1xt mYjiiql~ for(int i=0;i<nStartPos.length;i++)
iRwW> a3/ { 9h38`*Im; if(!fileSplitterFetch.bDownOver) u4#~
i0@ { yFU2'pB breakWhile = false; NVA`t]gn break;
):fu } {.D2ON } 8cBW] \ v if(breakWhile) 3Ra\2(bR break; )|h;J4V <,X+`m& ]b~2Dap //count++; YV3TxvXMR //if(count>4) h,'mN\6t // siteStop(); Z:Y.":[
Qi } h
GA0F9.U &8_f'+i0 d+m6-4[_k System.err.println("文件下载结束!"); C|d!'"p } (_&V9vat= catch(Exception e){e.printStackTrace ();} (-'0g@0UA } UGC|C F2K N]s7/s vzyI::f? //获得文件长度 !Ir1qt8T public long getFileSize() enbN0 { (LT\
IJSM int nFileLength = -1; ;vv!qBl|@ try{ >uchF8)e| URL url = new URL(siteInfoBean.getSSiteURL()); qtwT#z;Y HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ;[OJ-|Q httpConnection.setRequestProperty("User-Agent","NetFox"); @maZlw1q itC *Z6^ %I|+_ z&x int responseCode=httpConnection.getResponseCode(); hKH$AEHEU} if(responseCode>=400) Ss<_K>wk { d1uG[ processErrorCode(responseCode); 4j@kMe;RjZ return -2; //-2 represent access is error ySuLt@X } zA'gb'MmW -0KbdHIKb' [zh4W*K_cq String sHeader; "\zj][sL _Xk03\n6 L VU)W^ for(int i=1;;i++) n<%=~1iY+ { *t?~)o7 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 6N%L8Q //Utility.log(in.readLine()); SZK)q sHeader=httpConnection.getHeaderFieldKey(i); 4gv.E 0Fo if(sHeader!=null) yYG3/Z3u5 { A1|7(Sow if(sHeader.equals("Content-Length")) A^4kYOe { EBIa%, nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); vNK`Y|u@ break; fNAo$O4cm } 0[2BY]`Z. } (ifqwl62 else (N*<\6kr break; qr'x0r|<> } \C+*loLs } s#+"5&!s catch(IOException e){e.printStackTrace ();} hs{&G^!jo catch(Exception e){e.printStackTrace ();} /Oq)3fU
e 4Wi8$ 9+'@ Utility.log(nFileLength); M}=s3[d(, #7-kL7 MK] 5D]30 return nFileLength; Fi?32e4KI5 } bRK CY6 wuBlFUSg z<yNG/M1>U //保存下载信息(文件指针位置) e>?_)B4 private void write_nPos() 7Ykj#"BZ { DnG/ n try{ &O+sK4P output = new DataOutputStream(new FileOutputStream(tmpFile)); f!M[awj% output.writeInt(nStartPos.length); h V|v6 _ for(int i=0;i<nStartPos.length;i++) {z5V{M(|w3 { vgh^fa!/ // output.writeLong(nPos); j.=UI-&m output.writeLong(fileSplitterFetch.nStartPos); gqP-E output.writeLong(fileSplitterFetch.nEndPos);
o273|* } 6m, KL5>W output.close(); Ism^hyL } S+) l[0 catch(IOException e){e.printStackTrace ();} YM# catch(Exception e){e.printStackTrace ();} Qq,i } 6?1s`{yy XD$% fV.A=*1l# //读取保存的下载信息(文件指针位置) ^eTDD private void read_nPos() T:K" { #D|!
.I) try{ Z/89&Uy`h DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); h`
irO5 int nCount = input.readInt(); >\|kJ?h nStartPos = new long[nCount]; Cec9#C nEndPos = new long[nCount]; 5+e> +$2 for(int i=0;i<nStartPos.length;i++) TIcd
_>TW { ZQ,fm`y\ nStartPos = input.readLong(); #dva0%-1 nEndPos = input.readLong(); /<3;0~#){ } |eH wp input.close(); g9yaNelDh) } &\;<t,3A~ catch(IOException e){e.printStackTrace ();} N5pinR5 H catch(Exception e){e.printStackTrace ();} Xt</ -` } iGG6Myp- _u:>1] Qqd6.F private void processErrorCode(int nErrorCode) pP|,7c5 { UJee&4C-y System.err.println("Error Code : " + nErrorCode); 82j'MgGP } (Oxz'#TX "C_T]%'Wm !GlnQ`T //停止文件下载 5x*5|8 public void siteStop() f,Sth7y { ksB bStop = true; q+YuVQ-fx for(int i=0;i<nStartPos.length;i++) SQq6X63 \ fileSplitterFetch.splitterStop(); 1^Kj8*O8e :7 qqjs
I#"t'=9H } L8K0^~Mk } 4`'8fe/" //负责部分文件的抓取 [8,PO **FileSplitterFetch.java O0@w(L- */ 6eOrs-ty package NetFox; Ze-MAt NJn&>/vM aQ(`6DQv import java.io.*; Z} c'Bm( import java.net.*; _LJ5o_-N Hu<p?mF# BX@pt;$ek7 public class FileSplitterFetch extends Thread { q>^hoW2$C
@bY('gC, @O@fyAz String sURL; //File URL {SF[I long nStartPos; //File Snippet Start Position J&A;#<qY long nEndPos; //File Snippet End Position M-{*92y&
| int nThreadID; //Thread's ID }X=87ud boolean bDownOver = false; //Downing is over w+q?T boolean bStop = false; //Stop identical %oAL FileAccessI fileAccessI = null; //File Access interface g(mxhD!k D`~JbKV5@^ d!`lsh@tF public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException )8[ym/m { q\a[S* this.sURL = sURL; o[o:A|n this.nStartPos = nStart; 7N>oY$&) this.nEndPos = nEnd;
M{]e5+ nThreadID = id; 92!JKZe
fileAccessI = new FileAccessI(sName,nStartPos);//定位 .2e1S{ 9 } #MUiL= plK=D#) OQ6sv/ public void run() V/J>GRjw { O~.U:45t while(nStartPos < nEndPos && !bStop) d4%dIR) { s0r"N7~ >[a FOA fGb7=Fk try{ I[ai: URL url = new URL(sURL); mKV'jm0 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 1xz\=HOT httpConnection.setRequestProperty("User-Agent","NetFox"); [_h%F,_ A String sProperty = "bytes="+nStartPos+"-"; gF3TwAr httpConnection.setRequestProperty("RANGE",sProperty); lY.B Utility.log(sProperty); B]1HS`*7 x"vwWJNQ Xq|nJ|h InputStream input = httpConnection.getInputStream(); WM/#. //logResponseHead(httpConnection); $'^&\U~? YZibi X6xx2v%D byte[] b = new byte[1024]; [Gh"ojt]w int nRead; opdu=i=E while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Qu`n& { rnu
e(t nStartPos += fileAccessI.write(b,0,nRead); k_!+V`Ro# //if(nThreadID == 1) ~wTX>qV // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); X:Q$gO?[4 } hm3jpWi8 r=qLaPG yIOLs}!SF Utility.log("Thread " + nThreadID + " is over!"); qbXz7s*{ bDownOver = true; fE^uF[-7? //nPos = fileAccessI.write (b,0,nRead); job[bhK'Jt } $_)=8"Sn catch(Exception e){e.printStackTrace ();} ,<sm,!^<r } {DT4mG5 } eZNitGaU DF'8GF&Rp nX._EC //打印回应的头信息 6yI}1g public void logResponseHead(HttpURLConnection con) k,rWa { ;-Ss# & for(int i=1;;i++) 1~'_K9eE { |q_
!.
a String header=con.getHeaderFieldKey(i); =2,0Wo]$ if(header!=null) W<NmsG})_g //responseHeaders.put(header,httpConnection.getHeaderField(header)); ,d|vP)SS Utility.log(header+" : "+con.getHeaderField(header)); %,|ztH/ Q else t^.'>RwW| break; )Pli}) } M-Y0xWs } &8sV
o@Pa k(vPg,X>m Zm(dY*z5:J public void splitterStop() &EovZ@u { Fd7*]a bStop = true; H0a-( } 9=
V>f)R 'S?;J ,/ J{Tq%\a3 } Zhzy.u/> ,- '4L9 wVqd$nsY" /* :
,p||_G& **FileAccess.java bC~~5Cm *//文件访问(定位,写) Q2/.6O8 package NetFox; ~Fw<eY import java.io.*; ] TSg!H m_*R.a |y"jZT6R}t public class FileAccessI implements Serializable{ 6z?gg3GV ~O:
U|& //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 O"*`'D|hK RandomAccessFile oSavedFile; ni6r{eSQ long nPos; 2yKz-"E z<pJYpxH \cQ .|S public FileAccessI() throws IOException R#(G%66
{ zoP%u,XL this("",0); @Z;1 g } =MLf[ XoR>H4xh +y&d;0! public FileAccessI(String sName,long nPos) throws IOException ?t rV72D { >qR~'$,$ oSavedFile = new RandomAccessFile(sName,"rw"); 9s` /~ a@ this.nPos = nPos; Bux'hc oSavedFile.seek(nPos); ? _<[T } W#XG; *7" L]6 +a|/l public synchronized int write(byte[] b,int nStart,int nLen) }Qrab#v { WM,i:P)b int n = -1; 4/*H.Fl try{ ~p*1:ij oSavedFile.write(b,nStart,nLen); b2kWjg.4 n = nLen; 0oU=RbC } Lw*]EG|? catch(IOException e) )%Ru#}1X6 { a<m-V&4x e.printStackTrace (); h qmSE'8 } ._CP%
R <7n]Ai@Y 1H{jy^sP 7 return n; R$m`Z+/@ } iOqk*EL_r\ 7Kf}O6nE (~s|=Hxq|- } f9TV%fG? ^#e~g/ Veji^-0E /* rt4Z; **SiteInfoBean.java O~@fXMthh */ 8Fq_i-u package NetFox; >UHa #S5`Pd!I h`5)2n+ P public class SiteInfoBean { XU-m"_t K: r\{#9 *t9eZ!_f? private String sSiteURL; //Site's URL [!"XcFY:a private String sFilePath; //Saved File's Path %<Q*Jf private String sFileName; //Saved File's Name .px:e)iW private int nSplitter; //Count of Splited Downloading File onte&Ed\ )`HA:: Vhg1/EgUr public SiteInfoBean() mBk5+KyT {//nSplitter的缺省值为5 ijUzC>O+q //default value of nSplitter is 5 :&VcB$ this("","","",5); z4M1D9iPY } ftZj}|R! @Doyt{|T .T.5TMiOSq public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) $.K?N@(W { Lz4ehWntO sSiteURL= sURL;
cd. brM sFilePath = sPath; .%xzT J=! sFileName = sName; %_gho this.nSplitter = nSpiltter; |M5-5) UAYd?r rwqv V^ } / 8gL.i$ "x*-PFT ,&]MOe4@> public String getSSiteURL() '2^
Yw { w+AuMc return sSiteURL; dpzw.Z } ;IZ?19Q g]$
4~"|. <{ru|-9 public void setSSiteURL(String value)
K5"sj|d& { 3|kgTB- sSiteURL = value; 'Bq ZOZw } p1O6+hRio kv?|'DN -{g~TUz public String getSFilePath() <GIwRVCU { raB+,Oi$G return sFilePath; 0[a}n6XTk } P-Su5F 2x}6\t /c-nE3+rn public void setSFilePath(String value) ,Og4
?fS { _ PWj(}); sFilePath = value; ]/dVRkZeAE } TKI$hc3|L D`o<,Y 3y`F<&sA public String getSFileName() .y4&rF$n { ?nFO:N< return sFileName; "mIgs9l$ } BBL485` pGWA\}' N{joXHCu public void setSFileName(String value) .;I29yk\XS { ;;&F1@3tBa sFileName = value; y?z\L } \0*l,i1& XGs^rIf &Cro2|KZhG public int getNSplitter() zg}YGu|J { 1'KishHK= return nSplitter; YUkud2,j } ?y7w} W 3<(q } >Hwc,j
q public void setNSplitter(int nCount) RA1yr+) { tIZ~^*' nSplitter = nCount; zCe/Kukvy
} OkH\^ } grcbH >SI<rR[~% e>H:/24 /* TMj4w,g4 **Utility.java fEnQE EU~P */ nkY@_N package NetFox; !,&yyx. EESN\_{~. dbF M,"^ public class Utility { :Ml7G SN">gmY+ vA&Vu"}S public Utility() ;5S}~+j { \C|cp|A*& lpC
@I^: &=q! Wdw~ } _a
-]?R {BV4h%P]: //线程睡眠 XB\zkf_}Xc public static void sleep(int nSecond) 6Z! y { 'ZHdV,dd try{ ;st\I Thread.sleep(nSecond); u?0d[mC } ]> G&jd7 catch(Exception e) igkz2S I { M7dU@ Ag e.printStackTrace (); i@$*Csj\9* } LI
W*4r! } iS: #o> P%>?[9!Nt //日志 v,1F--v public static void log(String sMsg) $|<m9CW { >S#ul? System.err.println(sMsg); tFh|V
pB } I$jvXl=$ ijYvqZ_ .ER 98 public static void log(int sMsg) N}Vn;29 { shFc[A,r} System.err.println(sMsg); b:MG@Hxc } ]7/gJ>g, } P]6}\
]~ o$J6 ~dn RUXCq`)"< /* +x1/-J8_sg **TestMethod.java La,QB3K/ */ <y=ovkM3 package NetFox; PZOKrW a(x?fa[D v3^|"}\q5 public class TestMethod { 8Qrpa o .iv3q?8.b A WJWtUa public TestMethod() {d!Y3+I%G { ///xx/weblogic60b2_win.exe IgX4.]W5 try{ At9X]t SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); K0fv( !r{ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ;VzMU ;j SiteFileFetch fileFetch = new SiteFileFetch(bean); =>LZm+P fileFetch.start(); %+tV/7|F } &RY |