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/* SFqq(K2u **SiteFileFetch.java 6N.MCB^ */ S&'-wAEd package NetFox; LO)QEUG import java.io.*; zR}vR9Ls import java.net.*; tz%H1` z*N%kcw" Ja%isIdh public class SiteFileFetch extends Thread { X@~R< $oi8<8Y SCq3Kh SiteInfoBean siteInfoBean = null; //文件信息Bean ZVCa0Km
long[] nStartPos; //开始位置 D#X&gE long[] nEndPos; //结束位置 /J&_ZDNV~ FileSplitterFetch[] fileSplitterFetch; //子线程对象 LT/*y= long nFileLength; //文件长度 iDlg>UYd boolean bFirst = true; //是否第一次取文件
FOuPj+}F boolean bStop = false; //停止标志 1_)Y{3L File tmpFile; //文件下载的临时信息 |eej}G(,m} DataOutputStream output; //输出到文件的输出流 ^O3p:X4u |b|bL 7nx //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) -.UUa public SiteFileFetch(SiteInfoBean bean) throws IOException *47%|bf` { +3-f$/po siteInfoBean = bean; S$nEflcz //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); |<LW(,|A tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); U{3Pk0rZ if(tmpFile.exists ()) ->@iw!5xu { fvoPV&: bFirst = false; WAGU|t#." read_nPos(); snny!
0E\m } W0# VD e]> else @P<Mc)o^ { ` =I@W nStartPos = new long[bean.getNSplitter()]; q&: t$tSS nEndPos = new long[bean.getNSplitter()]; !f#[4Xw } (KphAA8 *Di ;Gf@ dca?(B!'6 ,)t/1oQ}>^ } Jrx]/CM ;QQ/bM&I }[ByN). public void run() bHmn0fZ9 { h.aXW]]}(P //获得文件长度 r59BBW)M //分割文件 g|x*sZR~Y //实例FileSplitterFetch #lx(F3 //启动FileSplitterFetch线程 Pb/[945 //等待子线程返回 1K{hj% try{ h%U,g
9_ if(bFirst) bVds23q { ]bAw>1,NVD nFileLength = getFileSize(); -VZ?
c if(nFileLength == -1) 8?$XT { Opf^#6'mq System.err.println("File Length is not known!"); /m+.5Qz9)@ } dqw0ns.2 else if(nFileLength == -2) tQIz { A{\!nq_~N System.err.println("File is not access!"); #(r1b'jfP } DMd&9EsRG else v cb}Gk { (l:LG"sy\ for(int i=0;i<nStartPos.length;i++) Ly`FU) { {tF)%>\# nStartPos = (long)(i*(nFileLength/nStartPos.length)); RVa{% } sm;\;MP*yH for(int i=0;i<nEndPos.length-1;i++) *!yY7 ~# { 1IZTo!xi nEndPos = nStartPos[i+1]; MK, $# } Ve\P ,. nEndPos[nEndPos.length-1] = nFileLength; `:EU~4s\ } 87:V-*8 } xU$15|ny ^1z)\p1 t3;QF //启动子线程 o\:vxj+%* fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; tcj3x< for(int i=0;i<nStartPos.length;i++) 420yaw/": { ,M$J
yda fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), MHAWnH8 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), NLO&.Q]# nStartPos,nEndPos,i); R ;3!?` Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); r*W&SU9Z fileSplitterFetch.start(); &W-1W99auE } S *K0OUq // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), qiyJ4^1 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); \Gz
79VW // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", LkUi^1((e nEndPos = " + nFileLength); yI_MYL[ // fileSplitterFetch[nPos.length-1].start(); XQ$9E?|= <5sP%Fs ) E JJW //等待子线程结束 [fr!J?/@ //int count = 0; ny[\yj4F //是否结束while循环 YEhPAQNj boolean breakWhile = false; eLN[`hJ E#mpj~{- y'U-y"7y while(!bStop) dmUa\1g# { _&/2-3]\B write_nPos(); 6eAJ>9@x Utility.sleep(500); =FXq=x%9+ breakWhile = true; @!2vS@f yo"!C?82= XFWo"%}w for(int i=0;i<nStartPos.length;i++) mA0|W#NB { -3&mgd if(!fileSplitterFetch.bDownOver) +{"w5o<CO { ]`_eaW?Ua breakWhile = false; RWINdJZ break; 0;x<0P } x @uowx_&m } +"Mlj$O if(breakWhile) 2U`g[1 break; `NARJ9M =1Tn~)^O ;>h:VnV(>( //count++; J2Z?}5> //if(count>4) 2M3C
5Fu // siteStop(); C?lZu\L } uy
oEMT#u Ebytvs,w Ue2k^a*Ww System.err.println("文件下载结束!"); QVPJ$~x } '=]|" catch(Exception e){e.printStackTrace ();} O*+,KKPt } @RFJe$% u13v@<HGc _$BH.I //获得文件长度 Ej/P:nB public long getFileSize() $'
>|r] { Ts
1 int nFileLength = -1; WS1$cAD2N try{ x$/:%"E URL url = new URL(siteInfoBean.getSSiteURL()); k{w HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); C9"yu&l httpConnection.setRequestProperty("User-Agent","NetFox"); |A19IXZ\ a
qIpO *4RL int responseCode=httpConnection.getResponseCode(); xzOM\Nq?O if(responseCode>=400) `Fs- z { ^DOQ+ processErrorCode(responseCode); R:t return -2; //-2 represent access is error DzE_p-
zs } ps@{1Rn1 -%6Y&_5VK C#D8
E.W String sHeader; anxwK47 WiCJhVF3 Qvhz$W[P> for(int i=1;;i++) (ixlFGvEq { TM^.y
Y //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); b<"LUM*; //Utility.log(in.readLine()); Jqgo\r%` sHeader=httpConnection.getHeaderFieldKey(i); 5R/k8UZ if(sHeader!=null) N"&qy3F { pm k;5 d if(sHeader.equals("Content-Length")) 37nGFH`K2m { \K(QE ~y'W nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); OysO55 i break; |g8Q.*"l[ } A<<Bm M.% } 1n|K else 8$y5) ~Q break; i $;y } 7=[/J*-m } R?H[{AX catch(IOException e){e.printStackTrace ();} =>,X)+O catch(Exception e){e.printStackTrace ();} NncII5z &)#bdt[ k9 NPC" Utility.log(nFileLength); g RBbL1 Tl`HFZQ1 f4r)g2Zb[ return nFileLength; mZ}C)&,m2 } [V _\SQV0 4'BZ +A,p pQ yH` //保存下载信息(文件指针位置) R1NwtnS private void write_nPos() Q9NKQuSu { -Vhxnh S try{ @86?!0bt output = new DataOutputStream(new FileOutputStream(tmpFile)); QPJz~;V2 output.writeInt(nStartPos.length); g.d~`R@v for(int i=0;i<nStartPos.length;i++) qhqqCVrsW { %hH@< <b(s // output.writeLong(nPos); $V2.@X output.writeLong(fileSplitterFetch.nStartPos); h;S? output.writeLong(fileSplitterFetch.nEndPos); Kuy0Ci } BhCOT+i;c output.close(); X8212[7 } ]d -U catch(IOException e){e.printStackTrace ();} G
"`t$=0 catch(Exception e){e.printStackTrace ();} `as6IMqJD } Z}s56{!. T@x_}a:g <n{-&;> //读取保存的下载信息(文件指针位置) KB6`OT^b{r private void read_nPos() ooIA#u { ,ou&WI yC try{ !;h`J:dN DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ry!0~ir int nCount = input.readInt(); ~#y( ]Xec2 nStartPos = new long[nCount]; V4qv7 nEndPos = new long[nCount]; R"V^%z;8o for(int i=0;i<nStartPos.length;i++) '5
kSr( { 't<hhjPqY nStartPos = input.readLong(); #AUV&pI[ nEndPos = input.readLong(); p~NFiZ, } S^*ME*DDz input.close(); U t'r^ } ]B>g~t5J catch(IOException e){e.printStackTrace ();} ERZWK catch(Exception e){e.printStackTrace ();} G*\U'w4w|* } /j:fc?yv wC~LZSTt $KMxq= private void processErrorCode(int nErrorCode) 6h3TU,$r { fs;pX/:FR System.err.println("Error Code : " + nErrorCode); u RPvo}!=1 } %% A==_b a<d$P*I(cH u[~= a5:4 //停止文件下载 jpRC6b? public void siteStop() AxZaV;%* { 3}ATt". bStop = true; 4VrL@c
@ for(int i=0;i<nStartPos.length;i++) CGY,I
UG fileSplitterFetch.splitterStop(); Xw_6SR9C f5dctDHP +!Lz]@9K } iDrQ4> } unN=yeut //负责部分文件的抓取 F vae lB **FileSplitterFetch.java x!QA* M */ Xl\yOMfp package NetFox; 6
~d\+aV H!vX# 0FG|s#Ig import java.io.*; $mLiEsJ import java.net.*; v7@O ,% @1^:V-= E!zAUEVQm[ public class FileSplitterFetch extends Thread { C3GI?|b }j6<S-s~ gi5Ffvs$ String sURL; //File URL d6ABgQi0 long nStartPos; //File Snippet Start Position gPzp/I long nEndPos; //File Snippet End Position 2E_*'RT int nThreadID; //Thread's ID DX#_0-o boolean bDownOver = false; //Downing is over G;Thz boolean bStop = false; //Stop identical >C"QV`+ FileAccessI fileAccessI = null; //File Access interface /{HK0fd ):pFI/iC V07? sc< public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 1H]E:Bq { B#Z-kFn@ this.sURL = sURL; 'Bb@K[=s this.nStartPos = nStart; /woC{J)4p this.nEndPos = nEnd; <N}*|z7=b nThreadID = id; to"[r fileAccessI = new FileAccessI(sName,nStartPos);//定位 a-Ef$(i_ } z }f;_NX CY
i{WV(: bf&k:.v'8 public void run() c`x[C { ga+Z6|t while(nStartPos < nEndPos && !bStop) w\2yippI { \jGvom. tF=Y3W+L %2t#>}If! try{ 2i_X{!0} URL url = new URL(sURL); vhj^R5= HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =as\Tp#d httpConnection.setRequestProperty("User-Agent","NetFox"); t?404 String sProperty = "bytes="+nStartPos+"-"; Xsit4Ma httpConnection.setRequestProperty("RANGE",sProperty); 4[^lE?+ Utility.log(sProperty); >W7IWhm3 J0a#QvX! "Ir.1FN InputStream input = httpConnection.getInputStream(); Zk#?.z} //logResponseHead(httpConnection); >HlQ+bl$xw ;?'=*+'> o YNp0Hc byte[] b = new byte[1024]; iz pFl@WS int nRead; j~:N8(= while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ajMI7j^G { PquATAzQA nStartPos += fileAccessI.write(b,0,nRead); @E5}v //if(nThreadID == 1) 1ps_zn( // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); h<ULp&g } Owz.C_{) b1 NB: 'I *&P5| Utility.log("Thread " + nThreadID + " is over!"); %V&I${z bDownOver = true; d?_LNSDo //nPos = fileAccessI.write (b,0,nRead); jtFet{ } LwL\CE_6+ catch(Exception e){e.printStackTrace ();} 0nOp'Ky\k } =gb(<`{> } [J6b5 6ISDY>p L.M|o //打印回应的头信息 BL Q&VI4 public void logResponseHead(HttpURLConnection con) mbm|~UwD { ;%tu; for(int i=1;;i++) :\+\/HTbh { oy!Dm4F String header=con.getHeaderFieldKey(i); %/(>>*}Kw| if(header!=null) \r+8}8 //responseHeaders.put(header,httpConnection.getHeaderField(header)); G
oJ\6&" Utility.log(header+" : "+con.getHeaderField(header)); bu|ecv else sBfPhBT| break; Ap[}[:U } qmJ^@dxs } 5{uK;Vxse ' y9yx[P A"8"e* public void splitterStop() b!ea(D!: { 6bW:&IPQ; bStop = true; r=3knCEWK } @JL+xfz Q4JvFy0' J}vxK
H#= } =P.m5e< {Z=m5Dy} Cw_XLMY%V1 /* _^)<d$R< **FileAccess.java 6W abw: *//文件访问(定位,写) Sn lKPd package NetFox; @^';[P! import java.io.*; HRY?[+ $SmmrM /\_wDi+# public class FileAccessI implements Serializable{ *NDM{WB|) $M T'ZM //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Ka"Z,\T
RandomAccessFile oSavedFile; o?$B<Cb" long nPos; &4ScwK: =NHzh! =(~UK9` public FileAccessI() throws IOException 0H-~-z8Y { {LLy4m this("",0); KiJR q> } M9/c8zZ JM@}+pX Vp'Zm: public FileAccessI(String sName,long nPos) throws IOException :2KLziO2 { >_4Ck{^d# oSavedFile = new RandomAccessFile(sName,"rw"); ?T(>!m this.nPos = nPos; u0@i3Po oSavedFile.seek(nPos);
Z E*m; } PmGW\E[ni z|V5/" a3<.F&c+c public synchronized int write(byte[] b,int nStart,int nLen) Q6 G-`&5 { 2h6<'2'o1 int n = -1; @L-3&~= try{ O,kzU,zOs oSavedFile.write(b,nStart,nLen); 6eqPaIaD n = nLen; 9N [PZD } hK,e<?N^ catch(IOException e) m"<Sb,"x! { ORV~F0d< e.printStackTrace (); SJtQK-%wK> } |@x^5Ab$T 0
7CufoI |-HV@c] return n; {1Z`'.FU } $EB&]t+ k(oHmw V #0F2GV<, } Y?(kE` R e `!PQMLU :[1^IH(sb /* XA~Cc<v **SiteInfoBean.java TU-4+o%; */ w(QU '4~ package NetFox; v>FsP$p4yE 2FxrMCC Zz<k^ public class SiteInfoBean { hlpi-oW` ymdZ#I- oh
k.; private String sSiteURL; //Site's URL BitP?6KX private String sFilePath; //Saved File's Path 0^41dfdE private String sFileName; //Saved File's Name v)*/E'Cr* private int nSplitter; //Count of Splited Downloading File /Q4TQ\: .Vm!Ng )j b]'Uv8f bF public SiteInfoBean() Fb&Xy{kt1 {//nSplitter的缺省值为5 uT'}_2=: //default value of nSplitter is 5 42a.@JbLQ this("","","",5); y9cDPwi:b } d{cd+An ~C1lbn b qB57w:J public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) &@tD/Jw3 { 4l/hh|3@ sSiteURL= sURL; Yv?nw-HM sFilePath = sPath; DQ'=$z sFileName = sName; -}u=tiNG this.nSplitter = nSpiltter; e>zCzKK h0}=C_.^ ke'aSD } ~)\9f 1O{^ k8!|WqfP Hc`)Q vFRW public String getSSiteURL() u@j]U|FpY { YP*EDb?f return sSiteURL; S
VCTiG8t } d5zv8?|X+ [{]/9E/& :fo.9J public void setSSiteURL(String value) T5*
t~`bfU { x=1Iuc;&3 sSiteURL = value; O$F<x, } b@GL*Z |m x)W} pKeK6K\8 public String getSFilePath() !GB\-( { :@mBSE/ return sFilePath; &I8Q' } d']CBoK )qDCh *P\$<4l public void setSFilePath(String value) mGss9eZa { ]q#w97BxiJ sFilePath = value; MIV<"A } g+g0iS .[%^~q7 9T`$gAI public String getSFileName() R^v-%mG9 { ]]sy+$@~ return sFileName; `^:>sU } r#8t@W 1 u[a713O 1L~y!il public void setSFileName(String value) Ptt { (d9G` sFileName = value; 54X=58Q } *$%ch= ld *W\ h/'b(9fS public int getNSplitter() CcGE4BB { sBN"eHg return nSplitter; QcW6o, } , %8keGhl kGz0`8URu Ox | ? public void setNSplitter(int nCount) O4)'78ATp { }u3Q*oAGl nSplitter = nCount; ; 9n} P@ } %4bGI/\/ } z%FBHj Z<P?P` |M8FMH[_ /* ;u:A:Y4V **Utility.java L1Hk[j]X| */ Zqo package NetFox; o\TXWqt /$EX-!ie $,b1`* public class Utility { g1!ek 0mt lM( UFE# J public Utility() Q1Jw7R#?l { "b~-`ni Gy]ZYo( QL].)Vgf } 1<9=J`(H b0(bL_, //线程睡眠 `>HM<Nn-0 public static void sleep(int nSecond) @IXvp3r { j3-^,r
t4 try{ sYfiC`9SO Thread.sleep(nSecond); **,(>4j } 0Z.X;1= catch(Exception e) MH0xD { O:%,.??<% e.printStackTrace (); q0m>NA
} b] EC+. } {)CN.z:O T{CCZ"Fv //日志 ydZS^BqG public static void log(String sMsg) iQT$#"m
n { n<)gS7 System.err.println(sMsg); yQ [n7du } )yl;i ln1QY"g M?gc&2Y public static void log(int sMsg) <MQTOz
oj { 6L/` System.err.println(sMsg); su}n3NsJ } -$2B!#]3 } C j4ED 'NAC4to;; }J ^+66{ /* ^~7/hm: **TestMethod.java j^T
i6F>f */ r%uka5@ package NetFox; 7l+:gD +Oafo|% d71|(`& public class TestMethod { `Eg~;E: .T\jEH8E ,hVDGif public TestMethod() NMvNw?] { ///xx/weblogic60b2_win.exe d#U~>wr try{ kSfNu{YS SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); %wQE
lkB //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); N<N uBtkA SiteFileFetch fileFetch = new SiteFileFetch(bean); 9F"^MzZ fileFetch.start(); xTGdh } PK&\pkX catch(Exception e){e.printStackTrace ();} 4(D1/8 <*3#nA-O>i '},
8x? }
PKg>|]Rf. PNp-/1Cx VkD}gJY public static void main(String[] args) Q`zW[Y&] { Gl6M(<f\5 new TestMethod(); VBN=xg} } <hBd
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