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/* <@P0sd **SiteFileFetch.java hsh
W5j */ Fc
Cxr@ package NetFox; 1RLSeT import java.io.*; i?]!8Ji import java.net.*; t+
@F"[j m`|+_{4[n j56Y,Tm public class SiteFileFetch extends Thread { #&^+hx| #HML=qK~ ;Ti?(n#M> SiteInfoBean siteInfoBean = null; //文件信息Bean `|4{|X*U. long[] nStartPos; //开始位置 6FfDif long[] nEndPos; //结束位置 q~Ud>{ FileSplitterFetch[] fileSplitterFetch; //子线程对象 .%o:kq@B long nFileLength; //文件长度 NGxuwHIQ8 boolean bFirst = true; //是否第一次取文件 8LOzL,Ah boolean bStop = false; //停止标志 94+#6jd e File tmpFile; //文件下载的临时信息 /W;;7k DataOutputStream output; //输出到文件的输出流 ck;owGlT F+X3CB,f //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) QJ
QQ- public SiteFileFetch(SiteInfoBean bean) throws IOException a^N/N5-Z { 5:6mptn> siteInfoBean = bean; QP'*
)gjO7 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (NP=5lLH tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); W'[!4RQL if(tmpFile.exists ()) VYO O8MQI { y]k`}&-~ bFirst = false; HO'
HkVA read_nPos(); 3WhJ,~o-y } W`KkuQ4cM else m1TPy-|1 {
W*
YfyM nStartPos = new long[bean.getNSplitter()]; ,v/C-b)I nEndPos = new long[bean.getNSplitter()]; rq=R},p } ^T"A9uaG >Kxl+F K_xn> CZ@M~Si_ } 8`+X6iZOQ Sng V<J>zR z-,'W` public void run() 'Mg%G(3 { )K}b,X`($ //获得文件长度 'lWNU //分割文件 nV'B!q //实例FileSplitterFetch 0GB6.Ggft //启动FileSplitterFetch线程 $*tuv? //等待子线程返回 BD#4=u try{ "l!"gc87 if(bFirst) pz(clTOD: { 0 X@5W$x nFileLength = getFileSize(); F"LT\7yjyG if(nFileLength == -1) =%bc;ZUu { lps System.err.println("File Length is not known!"); E;N+B34 } 4VK5TWg else if(nFileLength == -2) r`lgK2r\ { sbgRl% System.err.println("File is not access!"); ;qvZ * } +ISB"a else Re=bJ|wo { 8s|r' for(int i=0;i<nStartPos.length;i++) a-7nA {
^s%Qt nStartPos = (long)(i*(nFileLength/nStartPos.length)); WvR}c } "~GudK & for(int i=0;i<nEndPos.length-1;i++) pt=[XhxC(> { H`fkds nEndPos = nStartPos[i+1]; :QN,T3i'/3 } \4V'NTjB nEndPos[nEndPos.length-1] = nFileLength; GU!|J71z } aPWFb.JO4 } [QeKT8 7"M7N^ }L@YLnc% //启动子线程 9~N7hLT fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; %e_WO,R for(int i=0;i<nStartPos.length;i++) U9Y'eP.2 { u+{5c5_ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]SK (cfA` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), DK:d'zb nStartPos,nEndPos,i); lk8VJ~2d Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); YTY0N5[" fileSplitterFetch.start(); IUzRE?Kzf } L&l>?"_ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `OduBUI]] siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Y5K!DMKY // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Q&wBX%@^L nEndPos = " + nFileLength); kQ|}"Tw7 // fileSplitterFetch[nPos.length-1].start(); wd u>3Ch"y sW[42A i3YAK$w;& //等待子线程结束 aX0sy\Z]j //int count = 0; X!r!lW //是否结束while循环 enZW2o97c boolean breakWhile = false; ${`\In_?O XxV]U{i! 0ro)e~_@* while(!bStop) 3fpX { GJ!usv u write_nPos(); G.L4l|%W Utility.sleep(500); {Ke3 breakWhile = true; F/mD05{ 8amtTM 594$X@!v for(int i=0;i<nStartPos.length;i++) #~(@Ka.eA0 { IDv@r\Xw if(!fileSplitterFetch.bDownOver) ci,o'`Q { W.>yIA% breakWhile = false; N+h|Ffnp break; x%LWcT/ } n_iq85 } x}72jJe` if(breakWhile) ;0@"1` break; 7v1}8Uk SxMh ' I#9A\.pO //count++; g=a-zg9LX //if(count>4) :s*&_y // siteStop(); 'v4AM@%u }
T<P4+#JK QD7>S(p DAJh9I System.err.println("文件下载结束!"); 'M YqCfIK } `4XfT.9GT catch(Exception e){e.printStackTrace ();} k5W5 9tz } uPb9j;Q? N/]TZu~k z
RtK/bUa //获得文件长度 f'*HP%+Y public long getFileSize() >[ywrB ?T { c~@I1M int nFileLength = -1; U.d*E/OR5 try{ lkBab$S) URL url = new URL(siteInfoBean.getSSiteURL()); O`H[,+vm[ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 350 y6pVh httpConnection.setRequestProperty("User-Agent","NetFox"); DtyT8kr h1J-AfV .3oFSc`q int responseCode=httpConnection.getResponseCode(); jUdW o}/ if(responseCode>=400) &9IMZAo { BYP,}yzA processErrorCode(responseCode); tlG&PVvr return -2; //-2 represent access is error ;v#~o* } k:R9wo LKztGfy Q-BciBh$ String sHeader; W>'R<IY4#N s|YY i~ -x5^>+Y4 for(int i=1;;i++) o"K{^ L~u { +n1}({7m //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); *COr^7Kf5 //Utility.log(in.readLine()); QR<IHE{~8 sHeader=httpConnection.getHeaderFieldKey(i); C'kd>LAGu if(sHeader!=null) l{vi{9n) { w~Es,@ if(sHeader.equals("Content-Length")) XgU]Ktl { sg{>-KHM nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 4d[:{/+Q break; h?fv:^vSi } i5V ly'Q } H|==i2V{ else ]'MLy#9 break; *(s)CWf } {H"xC~. } 5zfPh`U>1 catch(IOException e){e.printStackTrace ();} %;9wToyK> catch(Exception e){e.printStackTrace ();} |\Jpjm)? 2~~Q NWN z&9vKF Utility.log(nFileLength); sm/l'e ;%hlh)k$ : E]A51 return nFileLength; m3K8hL/ } n+j'FfSz 7J7uHl`yq` 592q`m\ //保存下载信息(文件指针位置) ?ZE1>L7e private void write_nPos() FtT+Q$q= { (Kv[~W7lb try{ cqi: Rj
output = new DataOutputStream(new FileOutputStream(tmpFile)); $nBzYRc"3 output.writeInt(nStartPos.length); M*{E K for(int i=0;i<nStartPos.length;i++) 1/JgirVA { og!Uq]U/y // output.writeLong(nPos); \"5%w *vl output.writeLong(fileSplitterFetch.nStartPos); _D[vMr[ output.writeLong(fileSplitterFetch.nEndPos); {BDp`uZ } d|w%F= output.close(); T'0Ot3m` } =AGsW catch(IOException e){e.printStackTrace ();} ci6j"nKci catch(Exception e){e.printStackTrace ();} [gQ*y~N } q/<.^X s0qA8`Yu 2y v'DS //读取保存的下载信息(文件指针位置) mf^(Tq[ private void read_nPos() )nTOIfP2 { mvlK~c8 try{
WwPfz<I DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); gfFP-J3cN int nCount = input.readInt(); x^;nQas; nStartPos = new long[nCount]; qbFzA
i nEndPos = new long[nCount]; _h M3p for(int i=0;i<nStartPos.length;i++) +mYD
DlvI { rG}o!I`z nStartPos = input.readLong(); zf4@:GM` nEndPos = input.readLong(); &=xm>;`3 } }`\+_@w input.close(); gNo.&G [ } owJPEx catch(IOException e){e.printStackTrace ();} }I9\=jT catch(Exception e){e.printStackTrace ();} $+R0RqV$V~ } ie=tM'fb iw12x: 7P.C~,+D%P private void processErrorCode(int nErrorCode) YSs9BF:a { $:t;WXc.< System.err.println("Error Code : " + nErrorCode); r,EIOcz: } )1Z*kY?f! Z~9\7QJn w-"o?;)a //停止文件下载 %, XyhS5[o public void siteStop() [x'xbQLGd { vB#&XK.aW bStop = true; Ud\Jc:DG for(int i=0;i<nStartPos.length;i++) WpWnwQY`# fileSplitterFetch.splitterStop(); \:'=ccf U;LbP-{B AJI,>I,}} } Wu,'S;>C } bH~ue5q //负责部分文件的抓取 qR--lvO **FileSplitterFetch.java 7fgA)dU:K */ BOoLs(p package NetFox; $7T3wv9 BI3Q~ADV MrXhVZ"d* import java.io.*; )?:V5UO\ import java.net.*; =O<Ul~JRK +q|2j>k@ W52AX.Nm public class FileSplitterFetch extends Thread { %mAgE\y25 ez"Xb 7 Z1wN+Y.CA String sURL; //File URL ;%"UZ~]f long nStartPos; //File Snippet Start Position o=X6PoJN_ long nEndPos; //File Snippet End Position {]n5h#c 5* int nThreadID; //Thread's ID @K7#}7,t boolean bDownOver = false; //Downing is over U:M?Ji5CY boolean bStop = false; //Stop identical /0uZ(F|>I FileAccessI fileAccessI = null; //File Access interface #e((F,1z Bq#?g@V weEmUw Z public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException rLw,? { Ont4-AP
this.sURL = sURL; 9_n!.zA< this.nStartPos = nStart; i<YatW~Pu this.nEndPos = nEnd; |-bSoq7t nThreadID = id; cP'' fileAccessI = new FileAccessI(sName,nStartPos);//定位 L6fc_Mo.EE } b?hdWQSW7 7q<I7Wt QU2\gAM public void run()
!NUsfd { Rf+ogLa= while(nStartPos < nEndPos && !bStop) %`t;5kmR {
}H&NR?Ax Ix93/FAn ZTfs&5 try{ D0Oh,Fe#M\ URL url = new URL(sURL); + G#qS1 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); y]xG@;4M httpConnection.setRequestProperty("User-Agent","NetFox"); :[3{-.c String sProperty = "bytes="+nStartPos+"-"; A% 9TS/-p httpConnection.setRequestProperty("RANGE",sProperty); &B1d+.+ Utility.log(sProperty); ]rO`eN[~U )2C_6eR g>_lU
vSE InputStream input = httpConnection.getInputStream(); K, ae-#wgb //logResponseHead(httpConnection); OW<i"?0 k6_RJ8I HeZ! "^w byte[] b = new byte[1024]; 7hqa| int nRead; %3M(!X:[ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) t,4q]Jt { AF g* nStartPos += fileAccessI.write(b,0,nRead); O4ciD1 //if(nThreadID == 1) B @H.O! // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); , |CT|2D> } rR@ t5 Z"<aS&GH kz\
D-b Utility.log("Thread " + nThreadID + " is over!"); JEL=,0J bDownOver = true; DBANq\ //nPos = fileAccessI.write (b,0,nRead); 9->E$W } (9]`3^_,J catch(Exception e){e.printStackTrace ();} ,R5NKWo } <7fF9X } -yHVydu= 8;mn7 XX Fy3&Emu //打印回应的头信息 |#q 5#@, public void logResponseHead(HttpURLConnection con) Ml1yk)3G { oqH811 for(int i=1;;i++) 2T3v^%%j { {|c
<8 String header=con.getHeaderFieldKey(i); |FGt' if(header!=null) b&f;p}C24 //responseHeaders.put(header,httpConnection.getHeaderField(header)); hPLQ)c? Utility.log(header+" : "+con.getHeaderField(header)); ^B8%Re% else $p30?\ break; i% 19|an } .<}(J#vC } z1XFc*5 kFZw"5hb PXof-W public void splitterStop() h4N!zj[ { J;,6ydf8! bStop = true; D ksSD } %B5.zs]Of )F4H' v_?0|Ei[ } C8>zr6)1
M/C7<?& Aq@_^mq1A /* q[`)A?Ae **FileAccess.java 7Gd)=Q{uur *//文件访问(定位,写) 0|E!e package NetFox; N>!RKf:ir import java.io.*; "PK\;#[W| NXb_hF KSU?Tg&JR public class FileAccessI implements Serializable{ 6*9hAnH %
\p:S)R //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ]CsF} wr'z RandomAccessFile oSavedFile; Z?
u\ long nPos; ]`)50\pdw Cy-q9uTm v*`$is+ public FileAccessI() throws IOException 8gwJ%"-K { 5 fY\0 this("",0); JYB"\VV } j3jf:7 /\ 2V%si 6 #D~atgR public FileAccessI(String sName,long nPos) throws IOException >Vz Gx(7q { (~}IoQp> oSavedFile = new RandomAccessFile(sName,"rw"); >U.TkB this.nPos = nPos; ^vmT=f;TM oSavedFile.seek(nPos); F!OVx< } awLN>KI]</ fr
kDf-P Sd/?xyF1( public synchronized int write(byte[] b,int nStart,int nLen) d~@&*1} { o"dX3jd int n = -1; w=5 D>] try{ ovJ#2_ oSavedFile.write(b,nStart,nLen); E/z^~;KA n = nLen; ~H!s{$.5 } '0)a|1, catch(IOException e) fQ c%a1' { MUsF/1 e.printStackTrace (); d7s? c } WtOpxAq k4r;t: O ^ Mqc" return n; AB<|iJC } ?Iy$'am]L _ #]uk&5a Q SPneYD } 9[K".VeT] C[MZ9r OCmF/B_ /* 6'
}oo'#~ **SiteInfoBean.java .v;$sst5y */ >a7'_n_o package NetFox; >MD['=J[d 6U[`CGL66 t=M:L[bis; public class SiteInfoBean { C5oslP/@ sUA==k 9a}rE private String sSiteURL; //Site's URL <?UbzT7X private String sFilePath; //Saved File's Path 1%~yb Q private String sFileName; //Saved File's Name EUH&"8
L private int nSplitter; //Count of Splited Downloading File 1vKc>+9 (n:d
{bKV _Kdqa%L
! public SiteInfoBean() :L gFd {//nSplitter的缺省值为5 1xN6V-qk //default value of nSplitter is 5 z%-Yz-G9 this("","","",5); J60XUxf } 5u
+U^D 'q%56WAJ pleLdGq public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) xL8r'gV@ { 6UK{0\0 sSiteURL= sURL; mYLqT$t.+ sFilePath = sPath; }z{2~ 0, sFileName = sName; U6^x(2De this.nSplitter = nSpiltter; /RD@ [ 8 Za68V/Vj y)iT-$bQ } $D{KXkrd *Kj*| >) .^6;_s>FN public String getSSiteURL() a+A^njk { +oa\'.~? return sSiteURL; ,#&\1Vxf } KwGk8$ U VN!`@Ci/ S+(TRIjk public void setSSiteURL(String value) #'5|$ug[ { ):"Z7~j= sSiteURL = value; al>^}: } RsV<4$ A9Cq(L_H rg Gm[SL*< public String getSFilePath() m(MPVY<X { ?sfas57&y return sFilePath; $|+q9o\ } Ia_I~ U$
*Ju$A K.3)m]dCl public void setSFilePath(String value) WJH-~,u { +M4X
r* sFilePath = value; thG;~W } &+V6mH9m@ Z*&y8;vUQ n0|oV(0FE public String getSFileName() \Tf[% Kt x { ~)>O=nR return sFileName; #oBM A } DUBEh@ ZH'- >/ VB
53n' public void setSFileName(String value) ZlaU+Y(_[ { *sNZ.Y:. sFileName = value; [:M:6JJ } -L%J,f[&, /.PjHTM< Uc
oVp}vl public int getNSplitter() kLc}a5; { %eJolztKZ return nSplitter; ,H6*9!Dv2 } 6z;C~_BV u!kC+0Y I*,!zym public void setNSplitter(int nCount) tBR"sBiws { V>"nAh]}. nSplitter = nCount; hf5yTs } 80qSPitj } y X%q7ex )_[eqr >K]s)VuWR /* kmfz=q? **Utility.java J<K-Yeph */ <{$0mUn;s| package NetFox; M0Eq
7:Ba -M]NdgI !~X[qT public class Utility { s?qRy
2 %V r vu5 fP|rD[ public Utility() F_28q15~: { pPI'0x ~W?F. o}EipTL } +Fn^@/?yC "9mVBa|Q //线程睡眠 DeqTr: public static void sleep(int nSecond) kR+xInDM* { CKC%|xke try{ y2"PKBK\_ Thread.sleep(nSecond); Xx.4K>j+j } 3O{*~D&n catch(Exception e) ?&qa3y)wX: { +rT%C&ze e.printStackTrace (); &yu3nA:7D } c
eH8 } UNx|+ z^@.b //日志 IZr~h9 public static void log(String sMsg) [V vTR#^ { 7d9kr?3(U System.err.println(sMsg); jg2UX } cvoE4&m! T6T3:DG_B px|y_.DB2x public static void log(int sMsg) PKDzIA~T { x#wkODLqi System.err.println(sMsg); m8Wv46% } b=V"$(Q } , 7` /D !Q-h#']~L &ZkY9XO /* JCL+uEX4S **TestMethod.java !v^{n+ */ U<T.o0s= package NetFox; )Dg;W6 .Vohd@s9l "nkj_pC public class TestMethod { 0D x,)C (#|CL/ & f9+J} public TestMethod() G~$.Af!9W { ///xx/weblogic60b2_win.exe $P=B66t
^ try{ +
F{hFuHV SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); D'{NEk@ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Vrwy+o>:X SiteFileFetch fileFetch = new SiteFileFetch(bean); bn$(' fileFetch.start(); z%lu% } 'hEvW catch(Exception e){e.printStackTrace ();} VnZRsFY<^ ].=~C"s,a DC&3=Nd } pQQN8Y~^Y <)hA?3J {ylY"FA public static void main(String[] args) }01c7/DRP< { _*tU.x|DP new TestMethod(); qh|t}#DrR } !ucHLo3: } `"7}'| 点击下载更多相关资料
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