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/* C[#C/@ **SiteFileFetch.java i*!2n1c[ */ zf^|H%
~^ package NetFox; \ptjnwC^O import java.io.*; Unb3
Gv#O import java.net.*; @A*>lUo vEGI E'SDT*EI public class SiteFileFetch extends Thread { 'lu3BQvfh ?0+g.,9 L<Z,@q` SiteInfoBean siteInfoBean = null; //文件信息Bean \[*q~95$v long[] nStartPos; //开始位置 3 5L0CM long[] nEndPos; //结束位置 HTvUt*U1 FileSplitterFetch[] fileSplitterFetch; //子线程对象 s2 :Vm\ long nFileLength; //文件长度 <l5m\A boolean bFirst = true; //是否第一次取文件 ``6- boolean bStop = false; //停止标志 1v,R<1)& File tmpFile; //文件下载的临时信息 .sFN[>) DataOutputStream output; //输出到文件的输出流 M:iH7K P*VZ$bUe5@ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) x',6VTz^ public SiteFileFetch(SiteInfoBean bean) throws IOException UEfY'%x { v7`{6Pf_$ siteInfoBean = bean; j F/S2Ty2 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); .V3e>8gw3 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); v'S5F@ln if(tmpFile.exists ()) BpYxH#4 { ('Uj|m}9 bFirst = false; Z,Us<du read_nPos(); <yBa5m@/ } U/|JAg# else SO[ u4b_"h {
uKvdL
" nStartPos = new long[bean.getNSplitter()]; 2+~gZxHq nEndPos = new long[bean.getNSplitter()]; V'MY+# } VfP\)Rl lI.oyR' %%>nM'4< Pw thYy } VY+P c/b `ZI -1&Y3 DZ\K7- public void run() h0g?=hJq { .Y^cs+-o //获得文件长度 u#Jr_ze //分割文件 h&}iH //实例FileSplitterFetch 7C,giCYU //启动FileSplitterFetch线程 eNVuw: Q+ //等待子线程返回 ?# _{h try{ N~l*//Ep if(bFirst) UOl*wvy { ugE!EEy[^ nFileLength = getFileSize(); yRXWd*9 if(nFileLength == -1) 0< vJ*z|_ { -GHd]7n System.err.println("File Length is not known!"); ]W`?0VwF } $/;K<*O$ else if(nFileLength == -2) HK~SD:d { s*<T'0&w0S System.err.println("File is not access!"); yGAFQ|+ } dr: x0>
else dpylJ2 { <r t$~} for(int i=0;i<nStartPos.length;i++) ]77f`<q<}! { L+<h5>6 nStartPos = (long)(i*(nFileLength/nStartPos.length)); {5<fvMO!6 } bp=r]nO for(int i=0;i<nEndPos.length-1;i++) CW?Z\ { =&$z
Nc4h nEndPos = nStartPos[i+1]; %N fpEo } OoH-E.lp nEndPos[nEndPos.length-1] = nFileLength; YI,t{Wy } QRf>lZP } 2HN*j~>i~ yxp,)os: lMvOYv //启动子线程 2[qfF6FHA fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; SM4`Hys;p for(int i=0;i<nStartPos.length;i++) $m2#oI'D { &|#[.ti1 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), A?!RF7v siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), N\g=9o|Q nStartPos,nEndPos,i); !uW*~u Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); I@/
G#3Zr fileSplitterFetch.start(); Z6i~Dy3 } $$1t4=Pz // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b2UDP W siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $a*7Q~4 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ^?+[yvq nEndPos = " + nFileLength); ZxwrlaA // fileSplitterFetch[nPos.length-1].start(); 5buW\_G) jo<xrn\ S1U0sP@o //等待子线程结束 h'
!C //int count = 0; -?)^
hbr //是否结束while循环 iv *$!\Cd boolean breakWhile = false; S=!WFKcJR NknS:r&2 y&,|+h while(!bStop) HdqB B { xyk%\&"7 write_nPos(); x'x5tg Utility.sleep(500); ;kk[x8$ breakWhile = true; OVi<d 8O'bCBhv `5?0yXK for(int i=0;i<nStartPos.length;i++) t2(X { $kTm"I if(!fileSplitterFetch.bDownOver) ))|d~m { ,Zn6T"[$ breakWhile = false; t[`LG) break; cj>UxU][eS } M=liG+d } F(ydqgH~a if(breakWhile) y2_rm break; FprdP*/ Ur
xiaE Ra|P5 //count++; DlUKhbo$g //if(count>4) Hh^ "c} // siteStop(); kJ5z['4? } aKriO 6v3l^~kc' /=p[k^A System.err.println("文件下载结束!"); hAf/&yA@ } _,L_H[FN catch(Exception e){e.printStackTrace ();} (Ut8pa+yX } @\?ubF -4Hb]#*2 $^iio@SW{ //获得文件长度 %jjPs. public long getFileSize() ; R+>}6 { n\((#<& int nFileLength = -1; S<i1t[E@W try{ )%@7tx URL url = new URL(siteInfoBean.getSSiteURL()); 66pjWS
{X HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Nj4CkMM[3 httpConnection.setRequestProperty("User-Agent","NetFox"); eTp|!T 61H_o7XXk DSwb8q int responseCode=httpConnection.getResponseCode(); k4V3.i!E if(responseCode>=400) 5K1cPU~o_b { VBL4cU8D processErrorCode(responseCode); Q)0KYKD+@ return -2; //-2 represent access is error nnj<k5 } z='%NZY `Qo37B2 _A C N String sHeader; N 5*Qnb8 kAEq +{h 'w=|uE {^ for(int i=1;;i++) 9s"st\u
4 { =Mx"+/Yo* //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Hnt*,C.0 //Utility.log(in.readLine()); ~".@mubt1$ sHeader=httpConnection.getHeaderFieldKey(i); "M5 if(sHeader!=null) S#M8}+ZD, { 5\pS8<RJ; if(sHeader.equals("Content-Length")) Fy{yg]O" { ikc1,o nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); |`:cB break; Eto"B" }
$L= Dky7 } |s!
_;6 else \eKXsO"d break; 1k6asz^T } !s-A`}
s+ } xJ$uoy3+ catch(IOException e){e.printStackTrace ();} HZAT_ catch(Exception e){e.printStackTrace ();} gttsxOgktH #$BFTlm| A:(|"<lA Utility.log(nFileLength); u"qu!EY2 `'s_5Ek ]!AS%D` return nFileLength; r[!~~yu/o } U*a#{C7" Vx<{cHQQ .rk5u4yK //保存下载信息(文件指针位置) "]=OR> private void write_nPos() 73X*|g[O { i$] :Y`3h try{ 8~O#@hB~3 output = new DataOutputStream(new FileOutputStream(tmpFile)); Ll=G+cw6P output.writeInt(nStartPos.length); e^eJ!~0 for(int i=0;i<nStartPos.length;i++) $Xwk8< { m[=SCH-; // output.writeLong(nPos);
#tKks:eL output.writeLong(fileSplitterFetch.nStartPos); dQIF'==6 output.writeLong(fileSplitterFetch.nEndPos); N%f" W&ci } bWA_a]G output.close(); :(XyiF<Ud } AVjRhe catch(IOException e){e.printStackTrace ();} (m2%7f.I catch(Exception e){e.printStackTrace ();} -E\G3/*51 } p'LLzc## :4zPYG o }T.>p#z //读取保存的下载信息(文件指针位置) ,5zY1C==Ut private void read_nPos() H'3
pHb { GImPPF try{ h
i!K-_Uy DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); OulRqbL2 int nCount = input.readInt(); 75H!i$(*+ nStartPos = new long[nCount]; !y_L~81? nEndPos = new long[nCount]; D-@6 hWh~ for(int i=0;i<nStartPos.length;i++) EC$F|T0f { @VP/kut nStartPos = input.readLong(); tiGH#~? nEndPos = input.readLong(); #8t=vb3 } a"P &
9c input.close(); WY|~E%k } {s@!N catch(IOException e){e.printStackTrace ();} H9jlp.F catch(Exception e){e.printStackTrace ();} c),UO^EqV } Lfx a^0 $xW9)) ds(X[7XGW
private void processErrorCode(int nErrorCode) sB:e:PK { ?W ^`Fa)]o System.err.println("Error Code : " + nErrorCode); 8Q/cJ+& } JGq9RB]D$ ;gEEdx'&T #vK99S2 //停止文件下载 @}UOm-M public void siteStop() }6LcimQyK { t_I-6`8o] bStop = true; n. N0Nhd for(int i=0;i<nStartPos.length;i++) "=]'"'B: fileSplitterFetch.splitterStop(); ?_{{iil w`boQ_Ir UBv#z&@[ } te;bn4~ } -"Kjn`8 //负责部分文件的抓取 ^&F.T-( A **FileSplitterFetch.java 'O ~_g5kC */ [D|Uwq package NetFox; q\P{h ij uuHs) 8}oe))b import java.io.*; P<1&kUZL import java.net.*; G|&$/]~ +tkm,>s Wf:X)S7 public class FileSplitterFetch extends Thread { l}S96B R90chl vG}\Amx+ String sURL; //File URL T;kh+i long nStartPos; //File Snippet Start Position 2CtCG8o long nEndPos; //File Snippet End Position
e'|P^G>g int nThreadID; //Thread's ID !Y^B{bh boolean bDownOver = false; //Downing is over =AK6^v&on boolean bStop = false; //Stop identical o 8^!wGY FileAccessI fileAccessI = null; //File Access interface vO zUAi sN[<{;K4 V,7Xeh(+5L public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException F%ukT6xp { SX?hu|g_r this.sURL = sURL; M1DV 9~S this.nStartPos = nStart; r_^]5C\ this.nEndPos = nEnd; 's8LrO(= nThreadID = id; p|>/Hz1v fileAccessI = new FileAccessI(sName,nStartPos);//定位 0ZAtBq.s } !q+
%]k?x jA3Ir;a Q`h@-6N public void run() zW95qxXg { yrMakT = while(nStartPos < nEndPos && !bStop) lt l(SIi { v(/T<^{cuk =FXZcP>h iIoeG_^*Y try{ +AyrKs?h URL url = new URL(sURL); N%\!eHxy HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $5`P~Q'U httpConnection.setRequestProperty("User-Agent","NetFox"); @e_ bG@ String sProperty = "bytes="+nStartPos+"-"; Q9b.]W httpConnection.setRequestProperty("RANGE",sProperty); <m#ov G6 Utility.log(sProperty); ee.#Vhz {]/}3t /L8Q[`;. InputStream input = httpConnection.getInputStream(); tB_GEt2M //logResponseHead(httpConnection); I]|X6 s=&&gC1 B`xrdtW byte[] b = new byte[1024]; B'OUT2cgB int nRead; ]4m;NI d while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ndn)}Z!0h { -rSpgk0wL nStartPos += fileAccessI.write(b,0,nRead); #MbkU]) //if(nThreadID == 1) 0L_JP9e // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); YQWGv,47\ } /G`'9cD B 3Y,|* 0>?%{Xy Utility.log("Thread " + nThreadID + " is over!"); :d v{'O bDownOver = true; B zmmE2~* //nPos = fileAccessI.write (b,0,nRead); a7+w)]r } cRm+?/ catch(Exception e){e.printStackTrace ();} zrqQcnx9(m } N^\<y7x } #"J8]3\F B8){ p.1@4kgK&r //打印回应的头信息 {k4)f ad\ public void logResponseHead(HttpURLConnection con) ?6;9r[ p { o}q>oa b z for(int i=1;;i++) WZ\bm$
{ X}@^$'W String header=con.getHeaderFieldKey(i); zq1je2DB if(header!=null) OIpkXM //responseHeaders.put(header,httpConnection.getHeaderField(header)); >/@wht4- j Utility.log(header+" : "+con.getHeaderField(header)); 7>#?-, B else J:<mq5[ break; y:t@X~ } 5L6_W-n{ } 37OU w$Zi'+&* (_h=|VjK(I public void splitterStop() kj_MzgC'? { 6#[ bStop = true; .
V5Pr}"y } GRM:o)4;# rC`pTN }q<p;4<\F } Gw!VPFV>W ltQo_k JRti2Mu /* .r ,wc*SF **FileAccess.java b/[$bZD5o *//文件访问(定位,写) Z hqGUb package NetFox; tQR qQ import java.io.*; k^VL{z:EWB 6d7E@}< $6[%NQp public class FileAccessI implements Serializable{ p!oO}gE U/}("i![Dy //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 "A(D}~i RandomAccessFile oSavedFile; !
3 ;;6 long nPos; V; pRw` dDu8n+(8 L XE#a# public FileAccessI() throws IOException /Fr*k5I { MnLo{G] this("",0); ?^3Y+)} } oV/:T\Qn= dI(1L~ 2v$\mL public FileAccessI(String sName,long nPos) throws IOException &0b\E73 { pyw]ydB oSavedFile = new RandomAccessFile(sName,"rw"); tZXq<k9 this.nPos = nPos; :$=]*54`T oSavedFile.seek(nPos); !We9T )e } *KV^X(/ awU!3)B gB<1;_KW public synchronized int write(byte[] b,int nStart,int nLen) 8l>7=~Egp { <`V_H~Z int n = -1; {^@vCBE+ try{ H'"=C&D~ oSavedFile.write(b,nStart,nLen); cy64xR BB n = nLen; M7fPaJKL } {1"kZL catch(IOException e) ~v@.YJoZ4Z { HIqe~Vc e.printStackTrace (); j6d{r\!$4 } rDWwu' *DgRF/S XZ=%XB:? return n; n v
?u } <CcSChCg :sS4T&@1= m;J'y2h =$ } 6{w'q&LYcE Z817f]l y&A&d- /* D4T42L **SiteInfoBean.java q:1n=iEi */ m f\tMik< package NetFox; $WiUoS ?X+PNw|pf z.!u<hy( public class SiteInfoBean { 'Yaq; mDY y5j ;Daq J^=Xy(3e private String sSiteURL; //Site's URL "H9q%S,FH private String sFilePath; //Saved File's Path QuBA'4ht private String sFileName; //Saved File's Name .:t&LC][ private int nSplitter; //Count of Splited Downloading File a`D`v5G t /&E]qc*-p [4Q;5 'Dj public SiteInfoBean() ~Zw37C9J {//nSplitter的缺省值为5 ? r}2JHvN //default value of nSplitter is 5 sVH
w\_F$ this("","","",5); l\TL=8u2c
} RS|*3
$1 .7+"KP: ,E8g~ZUY9 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) `NyO|9/4 { t^=S\1"R\ sSiteURL= sURL; g)}q3-<AK> sFilePath = sPath; YlXqj\a sFileName = sName; /GF"D5 this.nSplitter = nSpiltter; bduHYs+rq L lD=c " eS-i@ } 4j(*%da 94?/Rhs5 8g?2( MT; public String getSSiteURL() 9fYof { 1I%niQv5t return sSiteURL; 6A4{6B } 4 g8t PB#EU9 Y2|c;1~5$ public void setSSiteURL(String value) >ktekO:H { D7Ds*X`!l sSiteURL = value; P!!:p2fo } !,~C /px`FuJI( >+%p}l:<\ public String getSFilePath() p3B_NsXVZ { T^g i^{ return sFilePath; ,w,)n^ } 6Z-[-0o+g 7'7o^>
! ~Q)Dcit- public void setSFilePath(String value) .p'\@@o5 { -];Hb'M.!e sFilePath = value; 6W'2w?qj?4 } \r}*<CRr6 CYNpbv *jl_,0g] public String getSFileName() 8u Z4[ { ;zo?o t/ return sFileName; )J&!>GP } $]b&3_O$N8 yjucR
Fl NmV][0(BS public void setSFileName(String value) ]2xoeNF/W{ { kN*\yH| sFileName = value; ntF#x.1Pm } @TnAO8Q>XD
(<#Ns W!z 4\Cb4jq%/ public int getNSplitter() !7anJl { _ 3>|1RB return nSplitter; Jm}zit:o } Oxf,2r ++0xa%: ?T:$:IHw public void setNSplitter(int nCount) @0rwvyE=+3 { .:jfNp~jt nSplitter = nCount; 5$f*fMd; } f%Bm x{Ttq } z/7"!
QX393v! ]ipltR7k /* #FV `*G
**Utility.java ]6EXaf# */ `'<&<P package NetFox; |/AY!Y3 a0x/ ?)DO j*;/Cah]k public class Utility { b."1p7' 3:WXrOl k`Ifd:V.y public Utility() (1b%);L7 { *S4*FH;8 K|LS VN?K e#$ZOK)` } goV[C]| sGD b< //线程睡眠 .J3Dk=/ public static void sleep(int nSecond) JMq00_ { Px))O&w{ try{ A">A@`} Thread.sleep(nSecond); -!]dU`:(X } yjP;o`z% catch(Exception e) (S#4y { ?(CMm%(8 e.printStackTrace (); 3#Hx^H } @rVBL<!o, } S?_ ;$Cn 3QrYH
@7zx //日志 X pd^^ public static void log(String sMsg) ii@O&g { UN}jpu<h System.err.println(sMsg); xd H*[ } ]OOL4=b 0oi
=}lV \'40u|f public static void log(int sMsg) K}U}h>N { Y@Kp'+t(! System.err.println(sMsg); m,U`hPJ } NwdA@"YQ| } 'L2M
W $Y4;Xe= qe:,%a-9 /* t>T |\WAAL **TestMethod.java &V&0kp@+ */ ToN$x^M
w package NetFox; dZ7+Iw;m pU*dE
,]'?Gd public class TestMethod {
WoiK _Ud y3K9rf MD,}-m public TestMethod() )[>b7K$f { ///xx/weblogic60b2_win.exe B&`hvR try{ PQRh5km SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); yjVPaEu]aU //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); <"@~
SiteFileFetch fileFetch = new SiteFileFetch(bean); +M6qbIO fileFetch.start(); 8eSIY17 } *Ki ],>_~ catch(Exception e){e.printStackTrace ();} u9FXZK7 qF(F<$B mlY0G w_e } 8_K22]c5 Q+[e)YO) tw]RH(g+# public static void main(String[] args) Eq9TJt'3y {
5eO`u8M new TestMethod(); s45Y8!c } Yo
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