-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* J3e96t~u **SiteFileFetch.java 5]NqRI^0 */ Kf>A\l^X7 package NetFox; C>-aIz!y import java.io.*; O[I\A[* import java.net.*; R9'b-5q Jy)KqdkX+ KV]X@7`@ public class SiteFileFetch extends Thread { V}J)\VZ2# <vUbv Z3#P,y9@ SiteInfoBean siteInfoBean = null; //文件信息Bean U}6B*Xx' long[] nStartPos; //开始位置 6ys
&zy long[] nEndPos; //结束位置 4A8;tU$& FileSplitterFetch[] fileSplitterFetch; //子线程对象 G'oG</A long nFileLength; //文件长度 S0B|#O%Z boolean bFirst = true; //是否第一次取文件 % W=b?: boolean bStop = false; //停止标志 Q9~*<I> h; File tmpFile; //文件下载的临时信息 =:&ly'QB& DataOutputStream output; //输出到文件的输出流 GNgKo]u qlb-
jL //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4.Q} 1%ZN public SiteFileFetch(SiteInfoBean bean) throws IOException ABQa 3{v { OjFLPGRCh siteInfoBean = bean; =8t]\Y? //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &:/hrighH tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); TV<'8L if(tmpFile.exists ()) R%{a1r>9h { 9Xj7~, bFirst = false; 19HM])Zw\ read_nPos(); f({Ei`| } [NaN>BZ? else !qv ea,vw { (MR_^t nStartPos = new long[bean.getNSplitter()]; zfc'=ODX nEndPos = new long[bean.getNSplitter()]; SW*"\X; } : ]sUpO _oHNkKQ o$#G0}yn -&3hEv5 } 4? ICy/,U- gLE:g5v6 X.Rb-@ public void run() /JHc! D { J&M
o%"[) //获得文件长度 e8pG"`wM8 //分割文件 F ~^Jmp7Y //实例FileSplitterFetch `V`lo,"\ //启动FileSplitterFetch线程 luo //等待子线程返回 '^No)n\` try{ O_ChxX0KP if(bFirst) 8vMG5#U[ { -*$HddD nFileLength = getFileSize(); L\@I*QP if(nFileLength == -1) G_0(
|% { n;@bLJ$W System.err.println("File Length is not known!"); fDT%! } z2g3FUTX)b else if(nFileLength == -2) VKq=7^W { yKa{08X: System.err.println("File is not access!"); 4Uphfzv3D } o=50>$5jlS else #:[t^} { F({HP)9b for(int i=0;i<nStartPos.length;i++) ]^lw*724'> { $oj:e?8N nStartPos = (long)(i*(nFileLength/nStartPos.length)); PmKeF} } Bwa'`+bC for(int i=0;i<nEndPos.length-1;i++) KVn []@# { i+p^ ^t\ nEndPos = nStartPos[i+1]; )TVFtI=,NN } mS~o?q-n nEndPos[nEndPos.length-1] = nFileLength; tnPv70m } j6Yy6X] } K
P Oa|$ SZ,YS
4M |y0(Q V //启动子线程 ;$smH=I fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; d8[J@M53|T for(int i=0;i<nStartPos.length;i++) L1cI`9 { \P.I)n`8 y fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), X~lVVBO siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), :-/M?,Q" nStartPos,nEndPos,i); 6LalW5I Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); BI3@|,._N fileSplitterFetch.start(); Lv|q } n?- }) // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {so`/EWa siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); CIb2J)qev // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", -_1>C\h" nEndPos = " + nFileLength); 8=NM|i // fileSplitterFetch[nPos.length-1].start(); gj*+\3KO@a j!U-'zJ aX5
z&r:{ //等待子线程结束 5]AC*2( //int count = 0; f33 l$pOp //是否结束while循环 - `p4-J!Fy boolean breakWhile = false; ] Hzt b 2/"u5 IIn"=g=9 while(!bStop) G/7cK\^u { ?d{Na=O\ write_nPos(); xx#zN0I>-y Utility.sleep(500); `< xn8h9p breakWhile = true; "|q qUKJZ nlW +.a[ 7ccO93Mz for(int i=0;i<nStartPos.length;i++) j2QmxTa! { /SrCElabP if(!fileSplitterFetch.bDownOver) 45,1-? -! { ?u "
4@ breakWhile = false; mF,Y?ax break; K`u(/kz/< } `HZ;NRr } |}(`kW if(breakWhile) FaDjLo2'o break; |wH5sjT ,*7 (%k^` :lf+W //count++; (Iaf?J5{ //if(count>4) `$W_R[ // siteStop(); @d
mV } Exc9`
7%. _j< K=){ G
8g<>d{j System.err.println("文件下载结束!"); l'/R&`-n } ;/r1}tl+3> catch(Exception e){e.printStackTrace ();} 19E8'@ } tt0f-:# @zU6t|mhz HY&aV2|A1 //获得文件长度 A8uVK5 public long getFileSize() +@p%
p { mLP.t%?# int nFileLength = -1; y5*Z3"< try{ 7"20hAd URL url = new URL(siteInfoBean.getSSiteURL()); -*
WXMzr HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); DAcQz4T` httpConnection.setRequestProperty("User-Agent","NetFox"); =kJ,%\E` :h\Q;? ?o81E2TJO int responseCode=httpConnection.getResponseCode(); n%-R[vW if(responseCode>=400) `(_s|-$ { KH(%? processErrorCode(responseCode); mlJ!:WG return -2; //-2 represent access is error 5|o6v1bM } ca7=V/i_a{ Ju96#v+: 5ni~Q 9b String sHeader; mS(fgq6 UNom- r:f[mk"-"A for(int i=1;;i++) S-
pV_Ff { 9Uj$K>: //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); &PYK8}pBk3 //Utility.log(in.readLine()); NG "C&v sHeader=httpConnection.getHeaderFieldKey(i); D~hg$XzK if(sHeader!=null) 6kpg+{; { *AO,^R&e. if(sHeader.equals("Content-Length"))
'EbWFMjy { jQ2Ot < nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); u%}nw :> break; e1%/26\ } 5*l T. } >O*IQ[r- else CE#gfP break; F`gi_;c } VH9dleZ } /{+y2.{j catch(IOException e){e.printStackTrace ();} D8Ykg >B;& catch(Exception e){e.printStackTrace ();} 95 ;x=ju B@&4i?yJ M?Dfu
.t Utility.log(nFileLength); DI:]GED"= QZ6D7tUc8 pR(jglm7- return nFileLength; NidIVbT.A } B8f8w)m `|{-+m _P0T)-X\( //保存下载信息(文件指针位置) "e.jZcN* private void write_nPos() 7
n8"/0kc: {
DJ'zz&K try{
coW:DFX output = new DataOutputStream(new FileOutputStream(tmpFile)); &;^YBW :I output.writeInt(nStartPos.length); z\K"Rg~J for(int i=0;i<nStartPos.length;i++) yE:+Lo`> { ;j[>9g // output.writeLong(nPos); lR )67a output.writeLong(fileSplitterFetch.nStartPos); .E`\MtA output.writeLong(fileSplitterFetch.nEndPos); X:HacYqtC } T ]t'39 output.close(); ZA0mz 65 } hIy ~B[' catch(IOException e){e.printStackTrace ();} B"h#C!E catch(Exception e){e.printStackTrace ();} @
[:ZS+1 } jrr EAp vB.E3 r= ^2Fei.?T. //读取保存的下载信息(文件指针位置) CyS$|E private void read_nPos() &]`(v}`] { T|nDTezr try{ z@!`:'ak DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ]A~WIF int nCount = input.readInt(); [<n2Uz7MP nStartPos = new long[nCount]; (}Z@R#njH nEndPos = new long[nCount]; */sS`/Lx for(int i=0;i<nStartPos.length;i++) ojcA<60
' { U#lCj0iUt, nStartPos = input.readLong(); A P)L:7w'e nEndPos = input.readLong(); eD,.~Y#?= } _zY#U9 input.close(); FHj"
nB } ur)9x^y catch(IOException e){e.printStackTrace ();} Of*Pw[vD catch(Exception e){e.printStackTrace ();} 4 ezEW|S } _
TiuY wH>a~C: jyZ (RB private void processErrorCode(int nErrorCode) aS{|uE] { = bfJ^]R System.err.println("Error Code : " + nErrorCode); 7%5z p|3 } @$ne{2J3 $ `ov4W HVi'eNgo //停止文件下载 pmuvg6@h public void siteStop()
~ksi</s { 6n,i0W bStop = true; |:nn>E}ZA/ for(int i=0;i<nStartPos.length;i++) ff]6aR/
UQ fileSplitterFetch.splitterStop(); Vr]id $Q &lSVQ K'L^;z6 } MI/MhkS
? } 94h]~GqNi //负责部分文件的抓取 <^&ehy:7y **FileSplitterFetch.java
?9!6%]2D */ ,)0H3t package NetFox; Bo)3!wO8 Rw"sJ) / CS2Bo import java.io.*; ( /=f6^} import java.net.*; EAT"pxP N-G1h?e4 fT;s-v[`k public class FileSplitterFetch extends Thread { joFm]3$; ,f~J`3(& qB5j;@r String sURL; //File URL 1Ir21un long nStartPos; //File Snippet Start Position k
Z?=AXu long nEndPos; //File Snippet End Position F^WP <0C int nThreadID; //Thread's ID F0GxH? boolean bDownOver = false; //Downing is over (l\1n;s*B boolean bStop = false; //Stop identical !\-{D$E?H FileAccessI fileAccessI = null; //File Access interface {x|[p_? 8m-U){r!U^ \HqNAE2T public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException *w|:~g { SEo'(-5 this.sURL = sURL; tI`Q /a5@ this.nStartPos = nStart; $mu^G t this.nEndPos = nEnd; *1uKr9 nThreadID = id; o*-)Tq8GHE fileAccessI = new FileAccessI(sName,nStartPos);//定位 vmU@^2JSJ } Z?6%;n^ 54 @3) (BpFe dzARI` public void run() J1,9kCO { p,
h9D_ while(nStartPos < nEndPos && !bStop) E%yNa]\P { o*b] p- 2y//'3[ SON-Z"v try{ +NeOSQSj URL url = new URL(sURL); \.0^n3y HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I5`4Al httpConnection.setRequestProperty("User-Agent","NetFox"); q8FTi^=Kb String sProperty = "bytes="+nStartPos+"-"; ? E1<!~ httpConnection.setRequestProperty("RANGE",sProperty); 7S-ys+ Utility.log(sProperty); MDnKX?Y v_<rNc,z-s 6^V=?~a&z InputStream input = httpConnection.getInputStream(); pM+ AjPr //logResponseHead(httpConnection); 2a-w%
(K )Lk639r QiQ_bB!\ byte[] b = new byte[1024]; B\=L3eL<D int nRead; UxbjA- U[ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 6@Y_*4$| { sQ=]NF)\ nStartPos += fileAccessI.write(b,0,nRead); hB"fhX //if(nThreadID == 1) tWJZoD6}h // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); P60~V"/P } 2V"B:X\ A}BVep@D D|lzGt Utility.log("Thread " + nThreadID + " is over!"); 61Bwb]\f/| bDownOver = true; }d[ kxo //nPos = fileAccessI.write (b,0,nRead); bbtGXfI+SB } dV*]f$wQ catch(Exception e){e.printStackTrace ();} Z EXc%-M } sz5MH!/PJ } fWCo;4<5? x5|I %G3h?3 //打印回应的头信息 FGPB: public void logResponseHead(HttpURLConnection con) m- %E-nr { N/[p < for(int i=1;;i++) '@cANGg7[ { kj|6iG String header=con.getHeaderFieldKey(i); 8|b3j^u if(header!=null) 2;[D;Y} //responseHeaders.put(header,httpConnection.getHeaderField(header)); Kc!}`Pm Utility.log(header+" : "+con.getHeaderField(header)); 4ae`pAu else ?# Mr break; 8/DS:uM } ucuSe!IcX } :lX!\(E2 H;D>|q Qwz}B public void splitterStop() v&Ii^?CvO { wJg1Y0nh bStop = true; R]Vt Y7}i, } G
!<Z.] ~Xw"}S5 -B>++r2A^ } 214Ml0/%
,ZKr.`B LZ\q37UV /* }xKP~h'F **FileAccess.java ,368d9,rDz *//文件访问(定位,写) PvR6
z0 package NetFox; <z+t,<3D import java.io.*; 7.-V-?i anuL1fXO ^le<} public class FileAccessI implements Serializable{ [M?}uK ^ zqd@EF6/bz //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 LU+3{O5y RandomAccessFile oSavedFile; t^VwR=i long nPos; Bm.afsM; Y4%:7mw~= DDvh4<Hk public FileAccessI() throws IOException sJ\BF { TvwZW!@jc this("",0); Z<U6<{b } `+`Z7 I\hh8abAp l_3`G-`2 public FileAccessI(String sName,long nPos) throws IOException @<<<C?CTv { K*\'.~[6 oSavedFile = new RandomAccessFile(sName,"rw"); UT>s5C this.nPos = nPos; r)qnl9?;`] oSavedFile.seek(nPos); "vA}FV%tRq } jnd[6v=C7- <DpevoF 8][nmjk0 public synchronized int write(byte[] b,int nStart,int nLen) 85lCj-cs { |b[+I?X int n = -1; L9-h;] x! try{ =5aDM\L$& oSavedFile.write(b,nStart,nLen); soPLA68 n = nLen; ]&?Y~"{cD } DvME1]7) catch(IOException e) ~0?mBy!-O { Xsa2(- e.printStackTrace (); &
SiP\65N } 4f@o mAM ^<;V]cY` [N1hWcfvd return n; )_a~}
U]=. } b`L%t:u{d Cv
}Qwy "~`I::'c } Z.d7U~_ ekI2icD $m7?3/YG /* f @8mS **SiteInfoBean.java pa#d L!J */ 5>VY LI package NetFox; dG@"!!, NxSu3e~PS +U_=*"@| public class SiteInfoBean { *+'x~a Ny_lrfh) [ Z:ni$7<. private String sSiteURL; //Site's URL 1[kMOp private String sFilePath; //Saved File's Path 6cpw~ private String sFileName; //Saved File's Name ^?$WVB private int nSplitter; //Count of Splited Downloading File 0 - ><q pkP?i5, e'~Zo9`r6 public SiteInfoBean() 5'0xz.)!
{//nSplitter的缺省值为5 b k|m4| //default value of nSplitter is 5 |M8WyW this("","","",5); A"`foI$0 } %cCs?ic =PUt&`1.a jlp:lX public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ~UyV< { ktK_e sSiteURL= sURL; ~CtL9m3tO sFilePath = sPath; <$6QDfa# sFileName = sName; PpV'F[|,r this.nSplitter = nSpiltter; tS|9fBdCs Ys
-T0 \Z^TXyu } .udv"?!z RbCPmiZcH A;5n:Sd public String getSSiteURL() ,B08i
o- { Z?pnj8h-& return sSiteURL; _tSAI } 76>7=#m0u' [v$0[IuY, #BJG9DFP4` public void setSSiteURL(String value) cHcmgW\4 { T_X6Ulp sSiteURL = value; mK[)mC
_8 } Qhs/E`k4 I6j$X 6u `
L> public String getSFilePath() 76V
6cI=+ { HODz*pI return sFilePath; o[v\|Q`d } *4U^0e Jo$G,Q IGS1| public void setSFilePath(String value) rm4.aO~-F { vy_D>tp sFilePath = value; '7D,m
H } ?notxE7 ] :[\v baJxU:Y=p public String getSFileName() W3D c r@Dy { v$(lZa1 return sFileName; 61/.K_%I. } LVc4CE
f O:TlIJwW Q?8R[i public void setSFileName(String value) CqHK %M { Rp*R:3
C sFileName = value; ~ zil/P8 } RletL) QYa(N[~a '; = f public int getNSplitter() &ZghMq~ { `6 /$M!4$ return nSplitter; XO-Prs } u$*56y .Q@S #d `Ja?fI'H- public void setNSplitter(int nCount) 6'kS_Zu{< { K`/`|1 nSplitter = nCount; $&$w Y/F } |}{B1A } Ubh{!Y VR+<v lIUuA /* GuGOePV **Utility.java #VB')^d<U */ AK=
h[2( package NetFox; >$ NDv >*-FV{{ VOc8q-hK public class Utility { <&&SX; #6AFdNy j
[rB"N`0 public Utility() |,#t^'S! { MZTx:EN! yu6`66h) ZunCKc } VtzI9CD ;<$H)`* //线程睡眠 !/^-;o7 public static void sleep(int nSecond) Sr&515 { -6tgsfEr try{ a-"k/P# Thread.sleep(nSecond); "V>R9dO{"! } C w~RJ^a_ catch(Exception e) cTXri8K_ { `((Yc]:7 e.printStackTrace (); G0`h % } #l4)HV } Kx.X 7R f'<Q.Vh< //日志 Mmo6MZ^ public static void log(String sMsg) Q\GDrdA { K,6b3kk System.err.println(sMsg); N0K){ } wO:Sg=,
U3izvM I=7Y]w= public static void log(int sMsg) S@}1t4Ls: { "]m+z)lWd System.err.println(sMsg); Vo9F } dWXstb:[ } cXR1grz Q~MC7-n> I.Y['%8,5~ /* {ekCQeDo **TestMethod.java nI/kw%< */ 3#vinz package NetFox; Fi.aC;sx Ul_M3"Z &X|<@'933 public class TestMethod { {TOmv h'i{&mS_b zVi15P$ public TestMethod() ]l@ qra { ///xx/weblogic60b2_win.exe q;fKcblKj try{ l"{Sm6:;- SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); X*g(q0N<S //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); >Jw6l0z SiteFileFetch fileFetch = new SiteFileFetch(bean); qC_mu)6 fileFetch.start(); 8 F2| } xy8#2 catch(Exception e){e.printStackTrace ();} ~
^>417>
Ku/~N# ~XydQJ^* } 9D 0dg( k-E{d04-2 F,GN[f- public static void main(String[] args) 4D$;KokZ { g|Y] wd new TestMethod(); O<jPGU } F(
Ak } 9'DtaTmGW 点击下载更多相关资料
|