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/* g5y`XFY **SiteFileFetch.java g<(!>:h */ [.^ol6 package NetFox; f]#\&" import java.io.*; a7c`[ import java.net.*; ^utOVi QmjE\TcK/ ?IYu"UO<)| public class SiteFileFetch extends Thread { *~g*J^R} \#(1IC`as y~\ujp_5w SiteInfoBean siteInfoBean = null; //文件信息Bean &:5*^1oP long[] nStartPos; //开始位置 h$kz3r;b," long[] nEndPos; //结束位置 =]]1x_GB FileSplitterFetch[] fileSplitterFetch; //子线程对象 %SOXw8- long nFileLength; //文件长度 Nd]F 33|X boolean bFirst = true; //是否第一次取文件 '=vZAV` boolean bStop = false; //停止标志 )M.s<Y File tmpFile; //文件下载的临时信息 d_d&su
E DataOutputStream output; //输出到文件的输出流 ?[d4HKs l>K+4 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) w")
G:K public SiteFileFetch(SiteInfoBean bean) throws IOException jhm/<= { BW7AjtxQ& siteInfoBean = bean;
O_8 SlW0e //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); L4Zt4Yuw tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &RYdSXM if(tmpFile.exists ()) kW)3naUf< { o *J*}y bFirst = false; Ny2
Z
<TW read_nPos(); ]5jS6@Vl* } jcJ 4? else &'$Bk5 D@G { 9^W7i]-Z nStartPos = new long[bean.getNSplitter()]; V*b/N nEndPos = new long[bean.getNSplitter()]; Q__CW5&'u } EW*sTI3 #zTy7ZS,0 WVRIq' H[u9C:}9b } yuZLsH PP$sdmo i8V\ x> 9 public void run() EL`|>/[J { [*^.$s( //获得文件长度 aO(PVS|P //分割文件 ~D9Cu>d9 //实例FileSplitterFetch \W.CHSD //启动FileSplitterFetch线程 `.MZ,Xhqi" //等待子线程返回 OP1`!P y try{ d5l42^Z if(bFirst) 6^gp
/{ { LZn'+{\` nFileLength = getFileSize(); kM506U<g if(nFileLength == -1) Cjf[]aNJe` { +r3)\L{U System.err.println("File Length is not known!"); ML_VD*t9 } 9m
M3Ve* else if(nFileLength == -2) Ma|4nLC} { W^[FWFUTY System.err.println("File is not access!"); *)Qv;'U=rn } Q-w# !<L. else "tCTkog3] { O6hzOyNX@ for(int i=0;i<nStartPos.length;i++) 0 #8 { l1 Kv`v\ nStartPos = (long)(i*(nFileLength/nStartPos.length)); z?\it( } ELCNf for(int i=0;i<nEndPos.length-1;i++) _iJ~O1qx,w { BTkx}KK nEndPos = nStartPos[i+1]; 2%pED
xui } P$ o bID nEndPos[nEndPos.length-1] = nFileLength; mU #F> } vUpAW[[ } (L/>LZn| ^&?,L@fW {]Zan'{PCO //启动子线程 3s%?)z fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; XR+
SjCA for(int i=0;i<nStartPos.length;i++) %)lp]Y33 { jA{5)-g fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }Ja-0v)Wf siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), <K [y~9u nStartPos,nEndPos,i); #3rS{4[ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ;MS.ag# fileSplitterFetch.start(); Pzso^^g } kZw"a*6 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), gI^&z siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Pp_4B // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", <<>+z5D+ nEndPos = " + nFileLength); XG/xMz~ // fileSplitterFetch[nPos.length-1].start(); z(\aJW
aN0[6+KP; LIID(s!bX //等待子线程结束 yLC[-.H //int count = 0; Z Ts*Y, //是否结束while循环 :TQp,CEa boolean breakWhile = false; T3{O+aRt ?6:qAFw v+nXKNL while(!bStop) B"GC|}N)v { XJ<"S
p write_nPos(); /I 7V\ Utility.sleep(500); wp?:@XM breakWhile = true; j[r}!;O VIp|U{ Cf[tNq for(int i=0;i<nStartPos.length;i++) xvTtA61Vp { , /.@([C if(!fileSplitterFetch.bDownOver) =7Ud-5c { Nn05me"X breakWhile = false; #p(gB)o:l break; OR@
67Y } #kW=|8X } g6Vkns4 if(breakWhile) {"wF;*U.V break; [K4cxqlfk E22o-nI?1 QEJu.o //count++; tYD8Y //if(count>4) *u$aItx // siteStop(); I*-\u } MJ:c";KCq0 {I{ 0rV H:(B^uH System.err.println("文件下载结束!"); NN4Z:6W5 } !`{?qQ[= catch(Exception e){e.printStackTrace ();} Wg}KQ6
6 } 7\UHADr iWt%Boyi H9T~7e+ //获得文件长度 0fqcPi public long getFileSize() )la3GT*1mS { FF8jW1 int nFileLength = -1; 5Dkb/Iagi try{ b~.$1oZ URL url = new URL(siteInfoBean.getSSiteURL()); WM+8<|)n HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); B!&5*f}* httpConnection.setRequestProperty("User-Agent","NetFox"); VD.TosVeWo ci;2XLAM R2)@Q int responseCode=httpConnection.getResponseCode(); UuIjtqW if(responseCode>=400) *8)?ZZMM { aqSOC(jU processErrorCode(responseCode); m'2F#{ return -2; //-2 represent access is error >M5}L< } U.TZd" |)7K(R)(= =o(}=T>:" String sHeader;
m}yu4 Ny"9!3V R6<'J?k for(int i=1;;i++) ( %7V { >"/TiQt //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); #.Dl1L/ //Utility.log(in.readLine()); F.TIdkvp sHeader=httpConnection.getHeaderFieldKey(i); ytj});,> if(sHeader!=null) OXLB{|hH80 { E]q>ggeNH if(sHeader.equals("Content-Length")) IEm?'o: { OG#^d5( nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); }e7/F[c.U break; \B')2phE } i<S\x } bAt!S else `pbCPa{Y break; H'S~GP4D } D?ic~-& } JSg=9p$ catch(IOException e){e.printStackTrace ();} bN?*p($/ catch(Exception e){e.printStackTrace ();} *e ffDNE! ydD:6bBX 7'+`vt#E Utility.log(nFileLength); -~.+3rcZ] ~%\vX mTH[*Y, return nFileLength; ,JH*l:7 } e`+ CV|Ae [ >$}Mr%49 //保存下载信息(文件指针位置) k&yBB%g private void write_nPos() nILUo2e~ { `mkOjsj & try{ +4t
\j<T output = new DataOutputStream(new FileOutputStream(tmpFile)); 4-O.i\1q output.writeInt(nStartPos.length); S%p,.0_ for(int i=0;i<nStartPos.length;i++) GF9iK|i/ { d>M 0: // output.writeLong(nPos); f[zKA{R output.writeLong(fileSplitterFetch.nStartPos); %.[AZ> output.writeLong(fileSplitterFetch.nEndPos); O0^Y1l } GLY,<O>D5 output.close(); ]mBlXE:Z } =]Y'xzJuu catch(IOException e){e.printStackTrace ();} Q-_;.xy#4 catch(Exception e){e.printStackTrace ();} ;|rFP } Jv2V@6a( a"O9;&};& sC.cMZ e //读取保存的下载信息(文件指针位置) OwC{ Ad{ private void read_nPos() '&/Y}] { ~O;?;@ try{ MMRO@MdfV DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); w4y???90) int nCount = input.readInt(); 1g!%ej
jd nStartPos = new long[nCount]; F8m@mh*8> nEndPos = new long[nCount]; ~}YgZ/U7T for(int i=0;i<nStartPos.length;i++) ^YPw'cZZ& { Y$q--JA nStartPos = input.readLong(); {flxZ} nEndPos = input.readLong(); :fG9p` } nNM)rW input.close(); e]jzFm~ } mpCKF=KL. catch(IOException e){e.printStackTrace ();} @(st![i+ catch(Exception e){e.printStackTrace ();} >*w(YB]/$V } ?IG+U TI ctC!b{S"@ 5geZ6]| private void processErrorCode(int nErrorCode) jK=-L#hz { e3&.RrA System.err.println("Error Code : " + nErrorCode); 3Z)vJC9' } &
V/t0 bU(fH^ BYDOTy/%nJ //停止文件下载 EJrQ9"x&n public void siteStop() g|3FJA/ { FJ&?My,=J bStop = true; gJn_8\,C>Q for(int i=0;i<nStartPos.length;i++) l< |)LDq~ fileSplitterFetch.splitterStop(); u-Ip *1/wp {,m W7 Z"<tEOs/En } 0/%VejZ' } tTrue? //负责部分文件的抓取 Q,f5r%A. **FileSplitterFetch.java W[W}:@KZ */ n47v5.Wn package NetFox; $5l=& n|iO)L\9aB B1gBvss import java.io.*; 5SY( :! import java.net.*; G&*2h2,] =:=uV0jX\ O7RW*V:G@ public class FileSplitterFetch extends Thread { cz9T, HTCn=MZm
? tm}0kWx String sURL; //File URL 3+jqf@ fO long nStartPos; //File Snippet Start Position fL&bN[XA"$ long nEndPos; //File Snippet End Position y|%rW int nThreadID; //Thread's ID +lqX;*a=N
boolean bDownOver = false; //Downing is over 7l3sd5 boolean bStop = false; //Stop identical 2^7VDqLc FileAccessI fileAccessI = null; //File Access interface ',p`B-dw {)0"?$C_H *<_8]C0> public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 3v%V\kO=F { 9rmOf Jo: this.sURL = sURL; <J QvuC this.nStartPos = nStart; 3Ga!) this.nEndPos = nEnd; h~
=UFE%' nThreadID = id; _YW1Mk1 fileAccessI = new FileAccessI(sName,nStartPos);//定位 x;Jy-hMNl } ^i^/d# =X11x)]F9 sc^TElic public void run() 3X&}{M:Qo { aD@sb o while(nStartPos < nEndPos && !bStop) :)\< { j9YI6X" viT/$7`AI yb#NB)+E@ try{ G~I@'[ur URL url = new URL(sURL); ^U.8grA HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); RAQi&?Ko httpConnection.setRequestProperty("User-Agent","NetFox"); [s4lSGh String sProperty = "bytes="+nStartPos+"-"; )q\|f_ httpConnection.setRequestProperty("RANGE",sProperty); hp]T ^ Utility.log(sProperty); fKMbOqU_ MGd 7Ont ^xO
CT=V InputStream input = httpConnection.getInputStream(); "Fu*F/KW //logResponseHead(httpConnection); 7W6tz\Y ;aip1Df d([NU; byte[] b = new byte[1024]; X9#;quco@ int nRead; l Ud/^u` while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ~1Q$FgLk { A7|!&fi nStartPos += fileAccessI.write(b,0,nRead); MS-}IHO //if(nThreadID == 1) $UAmUQg)}_ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); W|o LS } R g7 O WUSkN;idVG GQOz\ic Utility.log("Thread " + nThreadID + " is over!"); E4aCL#}D bDownOver = true; e.%`
tK3J //nPos = fileAccessI.write (b,0,nRead); V^WR(Q} } L<encPJt catch(Exception e){e.printStackTrace ();} _6"!y
]Q } K)c`G_%G } j()<.h;' f\FubL SyFOf //打印回应的头信息 TOp|Qtn public void logResponseHead(HttpURLConnection con) \-Mzs 0R { <taN3 for(int i=1;;i++) tY^ MP5* { L,L>cmpM String header=con.getHeaderFieldKey(i); {#aW")x^# if(header!=null) ?r"'JO.w //responseHeaders.put(header,httpConnection.getHeaderField(header)); YoV^Y&:9< Utility.log(header+" : "+con.getHeaderField(header)); h=uwOi6} else 8jW"8~Y#0 break; E(F<shT# } PMzPe"3M } E Z95)pk hm"i\JZ3N #;59THdtPk public void splitterStop() #%t&f"j2 { 5|>FM& bStop = true; 'xi[- - } dYdZt<6W<( !iBe/yb <u2rb6 } EY=`/~|c B2\R#&X. +.gM"JV /* 5 Z+2 **FileAccess.java ;fLYO6 *//文件访问(定位,写) vovc,4} package NetFox; $xRZU9+ import java.io.*; S&]AIG) ZPHiR4fQli 8zv=@`4@G public class FileAccessI implements Serializable{ #-b0U[,. QJ2V&t"3 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Y)*5M RandomAccessFile oSavedFile; >*#clf;@p long nPos; C{mL]ds< %Q9
iR5? H'N$Vv2q public FileAccessI() throws IOException X=O}k& { X2>qx^jT this("",0); 6E~T$^Q} } )c
vA}U.z ^B[%|{cO %Z|]"=;6 public FileAccessI(String sName,long nPos) throws IOException m/W0vPM1 { %n<u- {` oSavedFile = new RandomAccessFile(sName,"rw"); Z|&Y1k-h this.nPos = nPos; ^6*LuXPv oSavedFile.seek(nPos); Ul@Jg
} &w@~@] OnGtIY ,0ZkE}<=w public synchronized int write(byte[] b,int nStart,int nLen) pAwmQS\W { o(iv=(o int n = -1; a o_A%?Ld try{ n^OWz4 oSavedFile.write(b,nStart,nLen); ^<L;"jl% n = nLen; xs jJ8>G } {4u8~whLp catch(IOException e) E]x)Qr2Ju { ofeSGx e.printStackTrace (); H`!%" } 0fc]RkHs" Efo,5 ppcuMcR{ return n; Y XC?q } CV<@Rgoa rTJv>Jjld b}P5*}$:9" } QW~-+BD pPztUz/. BaSNr6
YW /* J:M)gh~# **SiteInfoBean.java Z
Mp */ TF %8pIg>Z package NetFox; @d5G\1(% }NQx2k0 6`LC(Nv%-n public class SiteInfoBean { F">>,Oc)U" p_hljgOV |.D_[QI private String sSiteURL; //Site's URL o!Vs{RRu} private String sFilePath; //Saved File's Path ;0}8vs private String sFileName; //Saved File's Name -"L)<J@gQ? private int nSplitter; //Count of Splited Downloading File =m@5$ kqYvd]ss B!jINOg public SiteInfoBean() z~d\d!u1 {//nSplitter的缺省值为5 #k%3Ag //default value of nSplitter is 5 Ed/@&52z0 this("","","",5); G@Dw } M4a-+T" 7#Qa/[? D rQNT public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) #80*3vi~F { *"E?n>b sSiteURL= sURL; &k3'UN!&Ix sFilePath = sPath; Meh?FW||5 sFileName = sName; )2X ng_, this.nSplitter = nSpiltter; "AjtNL5 DI=Nqa)r t;+6>sTu } 4+mawyM nbYkr*: "t 2aUz.k8o public String getSSiteURL() =+gp~RR, { z`uqK!v(K return sSiteURL; ;_0)f } +j 5u[X pj,.RcH@o :>lica_ public void setSSiteURL(String value) qR < { >Uvtsj# sSiteURL = value; N$ZThZqqv } xmtbSRgK9 uK]@!gz
~4Is public String getSFilePath() wxZnuCO%H8 { &)Z8Qu return sFilePath; jG{}b6 } uVqJl{e\ $JmL)r uMF\3T(x4 public void setSFilePath(String value) UQ>GAzh { .Gl&K|/{j sFilePath = value; o]#Q6J } $XFG1?L! \E.t=XBn l3}n.ODA public String getSFileName() {549&]/o { QN-n9f8 return sFileName; `.%;|"xR } NpD}7t<EF ^iubqtT] U=XaI%ZM) public void setSFileName(String value) 2Z@<llsi { (W+9 u0Zq sFileName = value; L5yxaF{] } UF<|1;' |f8by\Q86= [CPZj*|b public int getNSplitter() sNvT0 { B\|>i~u( return nSplitter; /_,~dt } =
k3O4gE7 :G^`LyOM 5?;'26iC public void setNSplitter(int nCount) B<1*p,z { 94APjqV6' nSplitter = nCount; <zZAVGb4I } c7s4 g- } 2)A
D' wtUG2 ( etoE$2c /* &f yFUg **Utility.java ry\']\k */ {_~G+rqY package NetFox; ]]Z,Qu#<- v wyDY%B"n qLP+@wbJ public class Utility { ?>y-5B[K/( )
G{v>Z,
xAjQW= public Utility() w!}1oy { K_5&_P1 E5(Y*m! )ziQ=k6d6 } (<l2 ^H c-.>C) //线程睡眠 lnDDFsA public static void sleep(int nSecond) kpH;D=; { hwzUCh 5! try{ JY2
F-0t) Thread.sleep(nSecond); ;}~=W!yz } \V>%yl{8 catch(Exception e) .=yus[,~ { HD{`w1vcN e.printStackTrace (); .m?~TOR } Xa@wN/"F } *d@Hnu"q GC[{=]}9U //日志 EKPTDKut public static void log(String sMsg) `yAo3A9vk { jw[BtRW System.err.println(sMsg); +Rgw+o } 0Qp'} _ wYA/<0'yH D:E~yh)$- public static void log(int sMsg)
<%D"eD { Sx)Il~ x System.err.println(sMsg); kI3zYD^: } `4H9f&8( } 6I.m c r`&|)Hx i=UTc1 /* .w_`d'} **TestMethod.java "O[76}I+.q */ y,?G75wij package NetFox; %hbLT{w
IZ0$=aB7 RVnyl`s public class TestMethod { 5u_4lNJ& B21AcE RzRvu]]8 public TestMethod() 'ZH<g8:=@ { ///xx/weblogic60b2_win.exe +;*(a3Gp try{ 4l}M
i SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); NWHH.1| //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Ws*PMK.0 SiteFileFetch fileFetch = new SiteFileFetch(bean); G;HlII9x[ fileFetch.start(); oPu|Q^I= } a\69,%!: catch(Exception e){e.printStackTrace ();} 0r-lb[n8i 4A/,X>W61 <
mK } '}+X,Usm ^T&u!{82j [du>ff public static void main(String[] args) KTK6#[8A { @`;Y/', new TestMethod(); 2v9s@k/k)6 } rrY{Jf9> } ]X:
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