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/* 51y"#\7 **SiteFileFetch.java wz69Yw7 */ 300w\9fn& package NetFox; njX$?V
import java.io.*; LYRpd import java.net.*; 0&]1s h,m 90Hd+ Rb0I7~Z%'d public class SiteFileFetch extends Thread { 9!uiQ io+V4m
1,;X4/* SiteInfoBean siteInfoBean = null; //文件信息Bean u>:(MARsR long[] nStartPos; //开始位置 *QiQ,~Ep long[] nEndPos; //结束位置 U3V5Jor# FileSplitterFetch[] fileSplitterFetch; //子线程对象 %Rn*oV long nFileLength; //文件长度 ;mk[! boolean bFirst = true; //是否第一次取文件 }/vW"&h- boolean bStop = false; //停止标志 X@DW1<wEt File tmpFile; //文件下载的临时信息 kc^,V|Nbq6 DataOutputStream output; //输出到文件的输出流 %k1Pyv;] 'v V7@@ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) mvZ#FF1,J public SiteFileFetch(SiteInfoBean bean) throws IOException + tMf&BZ { }Rw ,4 siteInfoBean = bean; :NF4[c //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); s4"OsgP+ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ]c7X~y if(tmpFile.exists ()) nlNk { /gZyl|kdy bFirst = false; DHWz, M read_nPos(); =,(TP } -U=Ci else rR#Ditn^ { aaFT nStartPos = new long[bean.getNSplitter()]; \uJRjw+ nEndPos = new long[bean.getNSplitter()]; ^'V :T Y } ;Y^'$I2fR# ?@.v*'qR 1[SG. 3OZPy|".ax } W}CM;~*L C}RO'_Pq {p84fR1P public void run() h= sNj { lhGJ/By- - //获得文件长度 Kp`{-dUf //分割文件 (.ir"\k1( //实例FileSplitterFetch U-I,Q+[C[^ //启动FileSplitterFetch线程 @x}"aJgl //等待子线程返回 VLez<Id9( try{ DW. w=L|5R if(bFirst) >[fu&r1 { 7 $e 6H|j@ nFileLength = getFileSize(); SMX]JZmH if(nFileLength == -1) lvO6&sF1 { r=H?fTY<3E System.err.println("File Length is not known!"); UZyg_G6 } t}YcB`q) else if(nFileLength == -2) 6Wu*zY_+ {
QrYF Lh System.err.println("File is not access!"); 5 #K*75> } *q=T1JY else /4&gA5BS] { [IL*}M! for(int i=0;i<nStartPos.length;i++) s?w2^<P { s@F&N9oh nStartPos = (long)(i*(nFileLength/nStartPos.length)); v'W{+>. } uuC ["Z for(int i=0;i<nEndPos.length-1;i++) X-c|jn7 { vd%g'fTy9 nEndPos = nStartPos[i+1]; ^65I,Z" } : ky`)F` nEndPos[nEndPos.length-1] = nFileLength; xb,XI/ } 6 c_#"4 } vMT f^V s1:Wrz?4 DB/~Z //启动子线程 hNN>Pd~; fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; z'YWomfZm for(int i=0;i<nStartPos.length;i++) !5`MiH { 0!hr9Y]Lx fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x-BU$bx5 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5Gz!Bf@!! nStartPos,nEndPos,i); im<bo Mv Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 4t,
2H" M fileSplitterFetch.start(); 1Bj.MQ^ } $.PRav // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !eW1d0n'+f siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); K./qu^+k // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", yw^Pok5. nEndPos = " + nFileLength); uo#1^`P // fileSplitterFetch[nPos.length-1].start(); ${f<} daE.y_9y %K6veB{M //等待子线程结束 7he73 //int count = 0; 6"&cQ>$xh //是否结束while循环 r48|C{je- boolean breakWhile = false; /ZvP.VW& EXDDUqZ5\ B7%K}|Qg while(!bStop) qSY\a\.< { "#1 \ uoH write_nPos(); Rb6BY-/J Utility.sleep(500); r,6~%T0 breakWhile = true; )w7vE\n3 IW~R{ ]6 =:H-9 for(int i=0;i<nStartPos.length;i++) =U]9> { %_(vSpk if(!fileSplitterFetch.bDownOver) W A/dt2D| { 3=O [Q :8 breakWhile = false; c!EA>:;(< break; sxNf"C=-. } 3#7V1 } 1j?P$%p if(breakWhile) &Hoc`u break; &*`dRIQ] @{/)k%U y``\^F //count++; @6;OF5VsQ //if(count>4) GcV/_Y // siteStop(); cY?|RXNmZ } fn}E1w cMT7Bd K~L&Z?~|E System.err.println("文件下载结束!"); I}`pY3 } f_~T catch(Exception e){e.printStackTrace ();} .p[uIRd` } +~8Lc'0aA h FU8iB`Q #u&fUxM:AS //获得文件长度 R"cQyG4 public long getFileSize() be+-p { cv'8_3 int nFileLength = -1; 2yfU]`qN try{ /~,*DH$) URL url = new URL(siteInfoBean.getSSiteURL()); i}m'#b HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); P(aBJ*((~ httpConnection.setRequestProperty("User-Agent","NetFox"); !tq]kKJ3: fFJ7Y+^ IdmP!(u int responseCode=httpConnection.getResponseCode(); 7KgaXi3r if(responseCode>=400) xlv(PVdn { ~XR('}5D processErrorCode(responseCode); +`d92T z return -2; //-2 represent access is error }a" =K%b<\ }
VY6G{f #9GfMxH -Q? i16pM String sHeader; d+DO}=] ,
z\Qd07u bB<S4@jF8z for(int i=1;;i++) AXbb-GK { J!Z6$VERy //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); kFjv'[Y1N //Utility.log(in.readLine()); ,!Wo6{' sHeader=httpConnection.getHeaderFieldKey(i); -6)n QNj| if(sHeader!=null) (wu'FFJp# { c/Pql!h+ if(sHeader.equals("Content-Length")) lWRl { 3EY Ed39E nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); SPqJ
[F break; b
ri[&= } > TYDkEs0 } L}
R"1O else P5my]4|x break; i ;B^I8 } _|e&zr } b36{vcs~ catch(IOException e){e.printStackTrace ();} (Z<@dkO?) catch(Exception e){e.printStackTrace ();} !SuflGx,q :2j`NyLI. g;Ugr8 Utility.log(nFileLength); M4Cb(QAVP N[eLQe]q GP+=b:C{E return nFileLength; Sfe[z=7S }
3?D,
Wu '/`O*KD] 2Pb+/1*ix //保存下载信息(文件指针位置) A\?t^T private void write_nPos() 2#NnA3l]x% { zWo try{ +C\79,r output = new DataOutputStream(new FileOutputStream(tmpFile)); *
1}dk`- output.writeInt(nStartPos.length); NrS+N;i for(int i=0;i<nStartPos.length;i++) \JPMGcL { q25p3 // output.writeLong(nPos); YnnK]N;\x output.writeLong(fileSplitterFetch.nStartPos); 25Ee+&&%
output.writeLong(fileSplitterFetch.nEndPos); c)
Eu(j\# } MR|A_e^x output.close(); y9mV6.r } <k[_AlCmsg catch(IOException e){e.printStackTrace ();} yl?LXc[) catch(Exception e){e.printStackTrace ();} z:S:[X0 } $cn8]*Z= ;|K
} SN)Czi#7
//读取保存的下载信息(文件指针位置) ^/Hf$tYI!` private void read_nPos() >!Gq[i0 { .oM- A\! try{ V=fu[#<@Ig DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (,sz. int nCount = input.readInt(); BHp>(7, nStartPos = new long[nCount]; Z:^<NdKe nEndPos = new long[nCount]; 1/1oT for(int i=0;i<nStartPos.length;i++) lI46
f { \>4>sCC nStartPos = input.readLong(); d_(;sW"I nEndPos = input.readLong(); =oXlJ[)h } c61 1& input.close(); `6-flc0r } /Q W^v;^ catch(IOException e){e.printStackTrace ();} 5M> p%/ catch(Exception e){e.printStackTrace ();} 1\Bh-tzB } B t3++ Mj OLF6["0Rn ~tTa[_ a! private void processErrorCode(int nErrorCode) A'![*O { .+Q1h61$T System.err.println("Error Code : " + nErrorCode); _[8JSw7 } k~;~i)Eg A##Q>|>) ~BTm6*'h //停止文件下载 nzxHd7NIZ public void siteStop() vR#MUKfh { K~]Xx~F bStop = true; ?r]0 %W^ for(int i=0;i<nStartPos.length;i++) V@LBy1z fileSplitterFetch.splitterStop(); P{s1NorKDh Yrf?|, S\ZCZ0 } r.@UH-2c } VwBw!,%Ab //负责部分文件的抓取 >yenuqIKQv **FileSplitterFetch.java 6_8y Q */ eJ[+3Wh package NetFox; /QlzWson ZHwN3 *XDe:A import java.io.*; \p\p~FVS import java.net.*; R/B/|x u6E
ze4u cWQ &zc public class FileSplitterFetch extends Thread { x`p908S^ ]LCL?zAzH! @VND}{j String sURL; //File URL t
~]'
{[F long nStartPos; //File Snippet Start Position PHez5 }T long nEndPos; //File Snippet End Position =%}(Dvjv int nThreadID; //Thread's ID \/wk!mWV@ boolean bDownOver = false; //Downing is over B'B0 e` boolean bStop = false; //Stop identical KKg\n^ FileAccessI fileAccessI = null; //File Access interface ,o
`tRh< ,
P1m# fP;I{AiN~ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException SoCN.J30 { MD0d this.sURL = sURL; E-9>lb this.nStartPos = nStart; RXWdqaENx this.nEndPos = nEnd; RY,L'GtO nThreadID = id; q` |E9 fileAccessI = new FileAccessI(sName,nStartPos);//定位 pP\^bjI } sBxCi~ 925T#%y
{j[*:l0Ui public void run() "|WKK} { *rm[\ while(nStartPos < nEndPos && !bStop) hR>`I0|p& { ZTGsZ}{5 +miL naO~L s,laJf try{ >G0ihhVt URL url = new URL(sURL); MzW!iG HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); EL
*l5!Iu httpConnection.setRequestProperty("User-Agent","NetFox"); hg^klQD String sProperty = "bytes="+nStartPos+"-"; C0>)WVCK httpConnection.setRequestProperty("RANGE",sProperty); X-"0Zc Utility.log(sProperty); 3\B~`=*q/ `Z`o[]% M7gqoJM'Q InputStream input = httpConnection.getInputStream(); AUU(fy#< //logResponseHead(httpConnection); ZI!;~q '
b,zE[Q 9\r5&#<(I byte[] b = new byte[1024]; bOlb int nRead; x}7Xd P.2$ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) rqM_#[Y? { @^Kw\s nStartPos += fileAccessI.write(b,0,nRead); p!(]`N //if(nThreadID == 1) m`,h nDp // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (jh0cy}|] } ;Ac!"_N?7 "L)?dlb6T fqm6Pd{:( Utility.log("Thread " + nThreadID + " is over!"); HxShNU bDownOver = true; J\ ? //nPos = fileAccessI.write (b,0,nRead); a3_pF~Qx } e5sQl1 catch(Exception e){e.printStackTrace ();} 04E#d.o' } IkLcL8P^ } gM
v0[~;u _4t n6GB2<y //打印回应的头信息 f:A1j\A? public void logResponseHead(HttpURLConnection con) W'C~{}c= { *i7|~q/u for(int i=1;;i++) (M t-2+"+ { n\4sNoFI String header=con.getHeaderFieldKey(i); L q;=UE if(header!=null) #Ic-?2Gn4< //responseHeaders.put(header,httpConnection.getHeaderField(header)); hzy#%FaB Utility.log(header+" : "+con.getHeaderField(header)); ,-Yl%R.W= else 0a's[>-'A break; h\OMWJ~ } Ivc/g, } ~$ "P\iJ #6Fc-ysk: O>2i)M-h9x public void splitterStop() e:WKb9nT { Md1ePp] bStop = true; :.fm LL } 8}!WJ2[R UJQGwTA W 'WJ3q|o/
} ;[[oZ -Y/c]g 1ihdH1rg[ /* T
[2l32 **FileAccess.java sb*)K,U *//文件访问(定位,写) 2G BE=T package NetFox; &BJ"T import java.io.*; :^992]EBEj 0 5o
1 /~;om\7r public class FileAccessI implements Serializable{ X< p KAO\ @ZGD'+zd? //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 5X,|Pn RandomAccessFile oSavedFile; 7y'2 long nPos; _T.k/a OS$^>1f" ,ftKRq public FileAccessI() throws IOException 2"!s8x1$ { =^`?O* /; this("",0); Y4I;-&d's } |'N)HH>; *t,1(Gw|7q XMw*4j2E public FileAccessI(String sName,long nPos) throws IOException 'yR)z\) { R*r;`x oSavedFile = new RandomAccessFile(sName,"rw"); \d}>@@U& this.nPos = nPos; YGf<! oSavedFile.seek(nPos); "TP^:Ln } .*Ylj2nM 0;2"X[e :SvgXMY@ public synchronized int write(byte[] b,int nStart,int nLen) |58xR.S'g { rki0! P` int n = -1; EN;s
8sC! try{ |!E: [UH oSavedFile.write(b,nStart,nLen); 'Uu!K! n = nLen; 1j?+rs+o- } XsbYWJdds catch(IOException e) 9vI<\
Xa { jcL%_of e.printStackTrace (); z^^)n } Yh2[
nF_ X)b@ia'"Wp Z|$M 9E return n; 2rPmu } _kXq0~ }WDzzjDR+ ;7E
c'nC4 } Wmc@:
(n 3>QkO.b bYAtUEv /* dTZ$92< **SiteInfoBean.java #gsJ
tT9 */ '8w>=9Xl package NetFox; D$Eq~VQ *WaqNMD[% {;vLM*
' public class SiteInfoBean { 5yk#(i7C M>[e1y>7 'e/wjV private String sSiteURL; //Site's URL U*4r<y9R private String sFilePath; //Saved File's Path sOVU>tb\' private String sFileName; //Saved File's Name 7z q@T] private int nSplitter; //Count of Splited Downloading File );;UA6CD &&g02>gE /V
GI@"^v public SiteInfoBean() !|Wf
mU {//nSplitter的缺省值为5 pZz\o //default value of nSplitter is 5 &EmG\vfE this("","","",5); \{v e6`7Rn } %
:h%i| VwOcWKD Q_>W!)p Gz public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Q[{RNab { jn(%v] sSiteURL= sURL; $*;`$5.x^ sFilePath = sPath; _&%FGcAS sFileName = sName; )2a)$qx; this.nSplitter = nSpiltter; X|-[i hp; ;y_ ]w6|n E!_3?:[S_ }
4Cv*zn ,x$^^ XBoq/kbw! public String getSSiteURL() 2VzYP~Jg { "}V_.I*+ return sSiteURL; Xv3pKf-K } .5uqc.i"f "([/G?QAG Lw2VdFi>E& public void setSSiteURL(String value) T<-_#}.Hn { 4jt(tZS sSiteURL = value; P?S]Q19Q4 } -We9
FO~ NBHpM}1xtU qV6WT&)T public String getSFilePath() ]f0OmUHR5i { sM+~x<}0 return sFilePath; Ptf(p` } #*:^\z_Jd kg
8Dn _ OC@J*4. public void setSFilePath(String value) M~N/er { `CI_zc=jx sFilePath = value; X
=%8*_ } fbU3-L? $rI 1|;^ *mVg_Kl public String getSFileName() UKQ"sC { M(zZ8# return sFileName; x Ek8oc } S>r",S +D:8r|evH Lm=;Y6'`N public void setSFileName(String value) HC/z3b; { bi^?SH\ sFileName = value; HA*L*:0 } r34MDUZdI L- !1ybB^ "X8jpg public int getNSplitter() F,{mF2U*$ { !TJ,:c]4{! return nSplitter; CF2Bd:mfZ } kJp~'\b 2Jio_Hk 80wzn,o
S public void setNSplitter(int nCount) ,_fz)@) { u}gavG l nSplitter = nCount; 6oNcj_?7?q } NOuG# P } >
'hM"4f hU8Y&R)=9 52dD(
/* J+J,W5t^ **Utility.java +ti ?7|bK< */ Zn'tNt/ package NetFox; N);w~)MYh B-R#?Xn:!I )&Oc7\J, public class Utility {
M .b8 -`V YR9fw a+E&{pV public Utility() 4=xi)qF/@ { -f)fiQ-< >H!Mx_fDL 6:]N% } r8J 7zTD& "y,YC M` //线程睡眠 lUm(iYv;H public static void sleep(int nSecond) o)AwM" { ViPC Yt`of try{ [|DKBJ Thread.sleep(nSecond); En?V\|, } :TH cI;PG8 catch(Exception e) ?Gki0^~J { bf"'xn9 e.printStackTrace (); hj [77EEz } ZgP%sF } <+i(CGw I6W`yh`I) //日志 amu;grH public static void log(String sMsg) V&M*,#(? { d;Vy59}eY System.err.println(sMsg); 3@>F-N } nqcq3o*B cz>,sz~i G*fo9eu5$ public static void log(int sMsg) Je1d|1!3 { "is( System.err.println(sMsg); q@|+`>h } Km`
SR^&\ } nT6y6F_e GXtMX ha, <v_=k],W /* 'o>)E> **TestMethod.java eqo0{e */ Dqx#i-L23 package NetFox; ]pax,|+$C w,LtQhQ m&UP@hUV- public class TestMethod { xM*_1+<dT$ eUyF<j PsY![CPrW public TestMethod() 2Je$SE8 { ///xx/weblogic60b2_win.exe 9%!h/m>rW try{ U
v2.Jo/Q SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ;H_/o+ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); -aoYoJ ' SiteFileFetch fileFetch = new SiteFileFetch(bean); ^X=Q{nB fileFetch.start(); :t}\%%EbmE } 4CNrIF@ catch(Exception e){e.printStackTrace ();} P6:9o}K6 f98,2I(>`+ ;O"?6d0 } sVLvnX, qpjY &3SI Ot=jwvw public static void main(String[] args) 067c/c { d+9V% T new TestMethod(); +#}GmUwPG$ } =
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