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/* ^Pu:&:ki **SiteFileFetch.java .5s^a.e'O */ 3c(mZ package NetFox; Br42Qo2"T> import java.io.*; VN\VTSZh?\ import java.net.*; V\e1NS ^,5%fl #`K {vj public class SiteFileFetch extends Thread { ue@W@pj iWFtb)3B >ke.ZZV? SiteInfoBean siteInfoBean = null; //文件信息Bean oR,zr long[] nStartPos; //开始位置 5ug|crX long[] nEndPos; //结束位置 ;volBfv FileSplitterFetch[] fileSplitterFetch; //子线程对象 FUJ<gqL long nFileLength; //文件长度 :=5X)10 boolean bFirst = true; //是否第一次取文件 $/@
L boolean bStop = false; //停止标志 !y>up+cRjl File tmpFile; //文件下载的临时信息 4i}nk
T DataOutputStream output; //输出到文件的输出流 B*Om\I vW!O("\7K< //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) W,H=K##6< public SiteFileFetch(SiteInfoBean bean) throws IOException 'Nuy/\[{\ { v&d'ABeT siteInfoBean = bean; 2mMi=pv9 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ,=c(P9}^ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Q>9bKP if(tmpFile.exists ()) ]\oT({$6B { 1;i|GXY:h bFirst = false; 4GG>n read_nPos(); ^;9l3P{ } =n_z `I else mW+5I-~ { XzqB=iX nStartPos = new long[bean.getNSplitter()]; JP5en nEndPos = new long[bean.getNSplitter()]; UIg?3J}R } C]l)Pz$ bmi",UZ:F i_l{#*t 7#oq|5 } V[]Pya|s+ 8O60pB;4 E?bv<L," public void run() oSf`F1;)HQ { *PB /I4>{ //获得文件长度 BS,EW //分割文件 -1NR]#P' //实例FileSplitterFetch @g+v2(f2v //启动FileSplitterFetch线程 0=t2|,} //等待子线程返回 }~ N\A try{ Ea'jAIFPpO if(bFirst) \/gf_R_GN { 5K682+^5 nFileLength = getFileSize(); v&7<f$5 if(nFileLength == -1) 8 4reyA { *:"60fkoU System.err.println("File Length is not known!"); 7ncR2-{g } A{k1MA<F6 else if(nFileLength == -2) =h
+SZXe<r { }Qe(6'l_ System.err.println("File is not access!"); K ;]dZ8 } + @|u8+ else W/ WP }QM { !Fxn1Z, for(int i=0;i<nStartPos.length;i++) +]NpcE' { W&D{0 i`y nStartPos = (long)(i*(nFileLength/nStartPos.length)); f7!48,(fB } % WXl* for(int i=0;i<nEndPos.length-1;i++) S1@r.z2L { wgolgof nEndPos = nStartPos[i+1]; gd#?rc*f<3 } M8 \/[R\ nEndPos[nEndPos.length-1] = nFileLength; &m[}%e%~0 } !g}@xwWax } -aE,KQ F9r/
M"5 "rEfhzmyF //启动子线程 jq8TfJ| fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 8fBhX,1 for(int i=0;i<nStartPos.length;i++) *P]]7DR { .d$Q5Qae fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), '@w'(}3!3R siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), |8[!`T*s nStartPos,nEndPos,i); 2J$vX( Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); BhbfPQ fileSplitterFetch.start(); tlg}"lY } w^ofH-R/ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), aaN/HE_ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ePI N<F;I // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ydY 7 :D nEndPos = " + nFileLength); $UK m[:7 // fileSplitterFetch[nPos.length-1].start(); ?$tD `'EG7 qdKqc,R1{ //等待子线程结束 ^;( dF<?'r //int count = 0; 4b`Fi@J\ //是否结束while循环 "AKr;|m boolean breakWhile = false; \v<S:cTf kq?:<!z G/fBeK$. while(!bStop) uV@'898%5 { >=:mtcph write_nPos(); M6qNh`+HO Utility.sleep(500); F1B/cd breakWhile = true; Q*1'k%7 8\:>;XG6f 7t}s5}Z 4 for(int i=0;i<nStartPos.length;i++) Ygkf}n { ?1Vx)j>| if(!fileSplitterFetch.bDownOver) $F X$nY { gGBRfq> breakWhile = false; aK| break; 5!$sQ@#}D } +opym!\ } O7LJ-M if(breakWhile) -b8SaLak break; VYh/URU> (4yXr|to} d7QUg6= //count++; s"w^E\>6 //if(count>4) GE=S.P; // siteStop(); @"/H
er } I?%q`GyP5 Qy4Pw\ ,WnZ^R/n System.err.println("文件下载结束!"); )dEcKH<# } aUc#,t;Qd catch(Exception e){e.printStackTrace ();} *3@8,~_tp } O\Z!7UQ$ L>E{~yh B^zg#x#8 //获得文件长度 Lyn{Uag public long getFileSize() P_8!Gp { Z02EE-A int nFileLength = -1; )8}k.t>'s try{ WJa7
URL url = new URL(siteInfoBean.getSSiteURL()); Z,O-P9jC HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); wTZ(vX*mK httpConnection.setRequestProperty("User-Agent","NetFox"); %Ny1H/@Q1+ sMUpkU- 7F~g A74h int responseCode=httpConnection.getResponseCode(); c~OPH
0, if(responseCode>=400) /k RCCs8t} { n6Uf>5 processErrorCode(responseCode); <
]+Mdy return -2; //-2 represent access is error wmXI8'~F& } xt"-Jmox u(f;4` -JPkC(V7] String sHeader; c>3? T^= ~OxFgKn23& n4 N6]W\5 for(int i=1;;i++) #6[F& { l7VTuVGUJ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); q{b-2k //Utility.log(in.readLine()); bT
T> sHeader=httpConnection.getHeaderFieldKey(i); 6biR5&Y5U& if(sHeader!=null) 2$!,$J-<Y { $9X?LGUz if(sHeader.equals("Content-Length")) vJVh%l+ { .v'`TD).6 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); NYG!\u\Rm break; e 6>j
gy } ^*B@= } 3K/tB1 else P(Zj}tGN break; KQ81Oxu*C } d=uGB" } C|w<mryx catch(IOException e){e.printStackTrace ();} H`URJ8k$Q catch(Exception e){e.printStackTrace ();} 9h)8Mq+M {+d)M ~[og\QZX Utility.log(nFileLength); Vmh$c*TE W_ Hoa*~ ~@X3qja
return nFileLength; RF'nwzM3 } (RG "2I3 1MnC5[Q wxPl[)E //保存下载信息(文件指针位置) " Qyi/r41 private void write_nPos() i^A=nsD` { P7bb2"_9 try{ W$;qhB output = new DataOutputStream(new FileOutputStream(tmpFile)); ,2 W=/,5A output.writeInt(nStartPos.length); hmG8
{h/ for(int i=0;i<nStartPos.length;i++) 9Hb|$/FD { |42;171
// output.writeLong(nPos); _29wQn@] output.writeLong(fileSplitterFetch.nStartPos); "XLtrAu{ output.writeLong(fileSplitterFetch.nEndPos); Yl"CIgt } "zQ<)Q]U output.close(); S-~)|7d. } y^nT
G catch(IOException e){e.printStackTrace ();} 1=,2i) catch(Exception e){e.printStackTrace ();} m}oR*<. } f/IQ2yT-:D +Ig%h[1a ZUS5z+o //读取保存的下载信息(文件指针位置) xaoR\H private void read_nPos() (&r`
l&0 { [UC_ try{ W(4$.uZ) DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); g.%} +5 int nCount = input.readInt(); s3Zt)xQ3 nStartPos = new long[nCount]; v#<{Y'K nEndPos = new long[nCount]; xVX:kDX for(int i=0;i<nStartPos.length;i++) 7I&o { 7l=Tl[n nStartPos = input.readLong(); ~OvbMWu nEndPos = input.readLong(); H<<t^,E^.t } mTUoFXX[ input.close(); &=n/h5e0t& } 7ZyP catch(IOException e){e.printStackTrace ();} r7R.dD/. catch(Exception e){e.printStackTrace ();} =_m3~=Z } }BL7P-km cZ)mp`^n7 &nI>`Q' private void processErrorCode(int nErrorCode) Qo^(r$BD { I_Gz~ qk6 System.err.println("Error Code : " + nErrorCode); mD&I6F[s } %eIaH!x: wF% RM$ fc<y(uX //停止文件下载 3"v>y]$U public void siteStop() ']I!1>v$[ { o~\.jQQxa bStop = true; _-543B} for(int i=0;i<nStartPos.length;i++) p[].4_B; fileSplitterFetch.splitterStop(); }mIN)o &IzNoB w3sU& |N } aBG^Xhx } hAc|a9 o //负责部分文件的抓取 LW.j)wB] **FileSplitterFetch.java xLi3|^q */ X/vyb^:U package NetFox; $\/^O94-l JN` $Fq+ HQ7g0:-^a> import java.io.*; |mHf7gCX import java.net.*; oD\t4]?E ;fW~Gb?" yTK3eK public class FileSplitterFetch extends Thread { cqJXZ.XC Aaq%'07ihW I=<Qpd4 String sURL; //File URL i '*!c long nStartPos; //File Snippet Start Position n^hkH1vY long nEndPos; //File Snippet End Position >1Hv c7DP int nThreadID; //Thread's ID 8zlvzp boolean bDownOver = false; //Downing is over G7v<Q,s boolean bStop = false; //Stop identical iDl#foXa` FileAccessI fileAccessI = null; //File Access interface oPni4^g i zaLPPm&f DQP!e6Of public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException W SxoGly { srAWet this.sURL = sURL; ~TS!5Wiv this.nStartPos = nStart; 8]b;l; W5 this.nEndPos = nEnd; \9`
~9#P nThreadID = id; Sa[lYMuB fileAccessI = new FileAccessI(sName,nStartPos);//定位 y?O-h1"3, } DbFe;3 6jgP/~hP>N "9QZX[J|* public void run() \ ~+b& { 8OV=;aM?{ while(nStartPos < nEndPos && !bStop) G6W|l2P! { PLz+%L;{ K\fD'; Y%0rji try{ ")vtS}Ekt URL url = new URL(sURL); /!?Tv8TPp HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); U5~aG!E httpConnection.setRequestProperty("User-Agent","NetFox"); 6S3D#SY String sProperty = "bytes="+nStartPos+"-"; AzZhIhWl"> httpConnection.setRequestProperty("RANGE",sProperty); 5Ww,vSCV) Utility.log(sProperty); :A @f[Y'9 T8|?mVv s 'Rsr*gX# InputStream input = httpConnection.getInputStream(); }[UH1+`L //logResponseHead(httpConnection); ZX`x9/0& )uo".n|n~B 6fI2y4yEz byte[] b = new byte[1024]; $|J+ int nRead; 7 L,`7k| while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 7#G!es { Et(H6O8 nStartPos += fileAccessI.write(b,0,nRead); j
nSZ@u //if(nThreadID == 1) V?"U)Y@Y // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [f lK } $/g`{OI]K k\T]*A U>.5vK.+ Utility.log("Thread " + nThreadID + " is over!"); >]gB@tn[ bDownOver = true; JU5,\3Lz# //nPos = fileAccessI.write (b,0,nRead); \ctzv``/n } YlG#sBzl catch(Exception e){e.printStackTrace ();} >yP>]r+ } p"~@q} 3 } Vq`/]& p=> +3 cQThpgha //打印回应的头信息 O{\<Izm`D public void logResponseHead(HttpURLConnection con) VBDb K| { <D)@;A for(int i=1;;i++) W% Lrp{ { =EA @ String header=con.getHeaderFieldKey(i); {Ke
IYjE if(header!=null) +$(y2F7|u- //responseHeaders.put(header,httpConnection.getHeaderField(header)); kv2o.q Utility.log(header+" : "+con.getHeaderField(header)); {fl[BX]kZ else LK*9`dzv=G break; `fX\pOk~e } y_q1Y70i2r } ;R2A>f~ h>[ qXz z(^dwMw} public void splitterStop() .6
0yQ[aE { NopfL bStop = true; {cLWum[SY } Viw,YkC Ps\4k#aOv R_GA`U\ { } -X%twy= U"Bge\6x= 8,vP']4r% /* fSVM[ **FileAccess.java hslT49m> *//文件访问(定位,写) lV4TFt, package NetFox; 7SYe:^Dx import java.io.*; E)jd>" Bd=K40Z: h@ ZC{B public class FileAccessI implements Serializable{ O_th/hl Zj ` ;IYFG //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节
fB]2"( RandomAccessFile oSavedFile; OiZ-y7;k^ long nPos; '@#(jY0_ ~-lUS0duh )c9Xp: public FileAccessI() throws IOException '" &*7)+g* { "oZ_1qi< this("",0); <^{(?* } Nr,I`x\N s!D2s2b9e fQ!W)>mi public FileAccessI(String sName,long nPos) throws IOException
u0oTqD? { T>#~.4A0 oSavedFile = new RandomAccessFile(sName,"rw"); BOM0QskLf this.nPos = nPos; ,d_rK\J oSavedFile.seek(nPos); N!dBF t" } $qZ6i |HY{Q1% Bt$,=k public synchronized int write(byte[] b,int nStart,int nLen) ]K>bSK^TX { Th\T$T`X$ int n = -1; '4u/ g try{ &X`
lh P oSavedFile.write(b,nStart,nLen); tK *y/S n = nLen; lcReRcjm } ]=xX_ catch(IOException e) &vN!>bR { y,`0f| e.printStackTrace (); .T(vGiU } -:45Q{u/ ^
.A "ixea- 2 return n; jHatUez4O } B]gyj W) #{?RE?nD } FS @55mQ @t$yg$Q?[ gPd, /* if\`M'3Xx **SiteInfoBean.java ){,Mv:#+T */ w}$;2g0=a< package NetFox; V7gL*,3>= eUR+j?5I N;!!*3a9= public class SiteInfoBean { 8$iHd |{ZdAr.; $*_79F2zN private String sSiteURL; //Site's URL &P35\q private String sFilePath; //Saved File's Path r#w 7qEtD private String sFileName; //Saved File's Name Z]k@pR ! private int nSplitter; //Count of Splited Downloading File 4JO16 eBmHb\ RK$( public SiteInfoBean() pTTM(Hrx {//nSplitter的缺省值为5 $X\2h+ Os //default value of nSplitter is 5 zO$r this("","","",5); JHZjf7g$k } Sz1 J4$5 q?]KZ_a aAn p7\7 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 017n hI { j*f\Z!EeZ sSiteURL= sURL; uXUuA/O5- sFilePath = sPath; 7'{Vh{. sFileName = sName; wr,+9uK this.nSplitter = nSpiltter; y
)<+?@sP SXJjagAoML 7,alZ"%W } 4,Uqcw?!F' {36N=A e6{E(=R[M public String getSSiteURL() H`q[!5~8 { W.D>$R2 return sSiteURL; t pxk8Ys } @ uQ *$ eHd7fhW5 -GB,g=Dk public void setSSiteURL(String value) i;|I;5tC { a gL@A sSiteURL = value; \ZE=WvnhZ } $ZB`4!JxG W* v3B. A>FWvlLw'm public String getSFilePath() N
Mx:Jh-YN { Y!Io @{f return sFilePath; m$pRA0s2` } [!uVo>Q4 ^1_[UG AqaMi public void setSFilePath(String value) ~>~qA0m"m { f3>DmH# sFilePath = value; U.$Th_ } Y5"HKW^ # M!1W5# 7+X~i@#rU public String getSFileName() |}<Gz+E> { AKk& return sFileName; HN5,MD[ } qFq$a9w|@ WoNY8
8hT ]-SJ";aU public void setSFileName(String value) "o_'q@.} { 6'<[QoW]; sFileName = value; =1
S%E } Wa&!1'
@ ub`zS-vb Jm< uE]9 public int getNSplitter() jPZpJ: { b8vZ^8tBV return nSplitter; 7~k=t!gTY } t&EY$'c Nqz6_! 0bIgOLP public void setNSplitter(int nCount) N&Ho$,2s { )t\aB_ = nSplitter = nCount; K"X"2c1o } M,bs`amz } vEGI 9zIqSjos" )1HWD]>4 /* WNQ<XBqAw **Utility.java ?`O^;f */ S QGYH package NetFox; Un
T\6u r=54@`O! SR?(z public class Utility { %&V%=-O_7 S)4p'cUwq HTvUt*U1 public Utility() _)~VKA]"" { ?~yJ7~3TS< 5wl;fL~e #5'&
|< } ``6- Nv6"c<(L= //线程睡眠 <dr2 bz public static void sleep(int nSecond)
@';.$ { ha 2=O try{ %:;g|PC Thread.sleep(nSecond); P*VZ$bUe5@ } zZ<* catch(Exception e) -%^'x&e { pv-c>8Wb6 e.printStackTrace (); DL!%Np?` } 2' ^7G@% } K,%CE
]. d2-oy5cEB //日志 lmL$0{Yr public static void log(String sMsg) F qgs
S { BfVh\lkH System.err.println(sMsg); Ude?[6 } p?4[nS-, tAI
v+L M'|p<SO] public static void log(int sMsg) 4i^WE;|s { v_WQ<G? System.err.println(sMsg); )4c?BCgy } R:R<Xt N`5 } 10OkrNQ
uKvdL
" X;l/D},. /* kLU-4W5t **TestMethod.java DrC"M*$! */ ['sNk[-C package NetFox; N0vECk 9|v%bO Q[K)Yd public class TestMethod { K:~tZ mZPvG j0a=v}j3 public TestMethod() a
}*i [ { ///xx/weblogic60b2_win.exe rPGj+wL5- try{ /@\R SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); iemp%~UZ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); $gD8[NAIx= SiteFileFetch fileFetch = new SiteFileFetch(bean); 57gt"f fileFetch.start(); 4K?
\5(b } JPng !tvR catch(Exception e){e.printStackTrace ();} 8UqH"^9.Q7 n\JI7A} 2l^_OrE! } 7C,giCYU y)CvlI [A"=!e$< public static void main(String[] args) GdVF; { nhjT2Sl new TestMethod(); C])s'XTs } 9:-7.^`P } n_9Ex&?e 点击下载更多相关资料
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