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/* #I
x59 **SiteFileFetch.java LWX,u */ QY7Thnp1 package NetFox; d$f3Cre import java.io.*; ?j:U<TY) import java.net.*; )y#~eYn mu$0x) -mfd ngp3 public class SiteFileFetch extends Thread { QJ%[6S dsrKHi i!KZg74V SiteInfoBean siteInfoBean = null; //文件信息Bean **KkPjAO? long[] nStartPos; //开始位置 Ew, 1*WK! long[] nEndPos; //结束位置 +-$Hx5 FileSplitterFetch[] fileSplitterFetch; //子线程对象 nm}wdel" long nFileLength; //文件长度 Bk44 wz2X boolean bFirst = true; //是否第一次取文件 hO?RsYJ.F boolean bStop = false; //停止标志 S!oG|%VuB# File tmpFile; //文件下载的临时信息 .$]%gjIBCl DataOutputStream output; //输出到文件的输出流 qZ=%ru }<=4A\LZ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Z]^Ooy[pb public SiteFileFetch(SiteInfoBean bean) throws IOException _$vAitUe4S { \ )'`F;
P siteInfoBean = bean; kD?lMA__ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 77?D
~N[ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); #)7THx/= if(tmpFile.exists ()) |%HTBF { -1z<,IN+ bFirst = false; N*$L#L$* read_nPos(); I}hY @ } j~;kh_ else OF_g0Zu { zQ>|`0&8 nStartPos = new long[bean.getNSplitter()]; rAwuWM@BIg nEndPos = new long[bean.getNSplitter()]; 1;FtQnvH } 'Z{_ws %j4AX E(p*B8d 9esMr0*= } ")xd 'V sCrOdJ6| XUK!1} public void run() -#agWqUM|T { x(r~<a[ //获得文件长度 tQYkH$e`/{ //分割文件 O*dtVX //实例FileSplitterFetch B3NDx+%m //启动FileSplitterFetch线程 eWw#
T^ //等待子线程返回 [19QpK WM try{ ^(c.AYI if(bFirst) X={Z5Xxr" { 6aq=h`Y nFileLength = getFileSize(); g\~n5=-D if(nFileLength == -1) lD41+x7 { hwj:$mR System.err.println("File Length is not known!");
)/mBq#ZS } 'OjsV$_ else if(nFileLength == -2) 2b89th { }Y`D^z~ System.err.println("File is not access!"); _i@4R< } G W@g else 5'%nLW7;O { 3-6Lbe9H for(int i=0;i<nStartPos.length;i++) H$44,8,m { {1Hs5bg@ nStartPos = (long)(i*(nFileLength/nStartPos.length)); HpGI\s } yNDplm|9* for(int i=0;i<nEndPos.length-1;i++) u!@(u!Qz { )8@|+'q nEndPos = nStartPos[i+1]; 2R=Fc@MXs } <!G%P4) nEndPos[nEndPos.length-1] = nFileLength; dK d"2+fH } `c.P`@KA } J2avt u?%FD~l:uU 45aFH}w: //启动子线程 =tQ^t4_ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;&OVV+y for(int i=0;i<nStartPos.length;i++) ]}z"H@k { u6MHdCJ0y fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), pz0Q@ n/X siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), HD!2|b~@ nStartPos,nEndPos,i); reI4!,x Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); bx._,G fileSplitterFetch.start(); \ Dccf_(Pb } aNDpCpy // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), r(OH siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); :D:Y-cG*n< // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @Pb%dS nEndPos = " + nFileLength); Lc! t // fileSplitterFetch[nPos.length-1].start(); Y{7)$'At 34c+70x7 tb/`*Yl@ //等待子线程结束 JsK_q9]$e //int count = 0; )zAATBb4. //是否结束while循环 9r=yfc!cS boolean breakWhile = false; U[G5<&Z^ q854k+C jhB+ ] while(!bStop) S.|%dz { H,Yrk(O- write_nPos(); tvOyT6 ] Utility.sleep(500); d;v<rw breakWhile = true; <(_${zR GzjC;+W
LX</xI08W for(int i=0;i<nStartPos.length;i++) Xu& v3Y~k { =~q Xzq if(!fileSplitterFetch.bDownOver) PBb'`PV { [E;~Y_l breakWhile = false; +?^lnoX break; 7-MyiCt } V PI_pK }
fK NDl\SD if(breakWhile) nmoC(| r break; \
m g +t}<e( X!K:V~WG //count++; ;fB!/u //if(count>4) Bi|-KS.9 // siteStop(); gsVm)mkd } 0RP{_1k =|qYaXjT$ pXf5/u8& System.err.println("文件下载结束!"); N[wyi&m4 } YLid2aF catch(Exception e){e.printStackTrace ();} ~"22X`;h[G } ,S-zY\XB c1h?aP p1fy)K2{,j //获得文件长度 nACKSsWqI public long getFileSize() _}Ec[c { m ?jF:]^ int nFileLength = -1; Mf`@X[-; try{ 89[OaT_hs URL url = new URL(siteInfoBean.getSSiteURL()); Jl{g"N{2u' HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); CxJH)H$ httpConnection.setRequestProperty("User-Agent","NetFox"); NXdT"O=P $GX9-^og=T [-w+ACV~ int responseCode=httpConnection.getResponseCode(); ;(;{~1~ if(responseCode>=400) ){"-J&@? { o'!WW processErrorCode(responseCode); ;1>)p x** return -2; //-2 represent access is error P*{*^DN } T<~?7-O" <amdPo+2D 'L ]k\GO String sHeader; H(ds Ui05o7xg~p 7A4_b8 for(int i=1;;i++) 6"_ytqw7 { #H&`wMZZ: //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); H+Se //Utility.log(in.readLine()); o;7_*=i sHeader=httpConnection.getHeaderFieldKey(i); }XIUz| if(sHeader!=null) k+y>xI, { o :_'R5 if(sHeader.equals("Content-Length")) TZ]o6B b { TW~9<c nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); _U`1BmTC2 break; }?=4pGsI } P |kfPohI= } ip2BvN& else `T~~yM)q break; :WnF>zN } v= "2p8@F } Yb Dz{m catch(IOException e){e.printStackTrace ();} 2^T`> ?{X catch(Exception e){e.printStackTrace ();} +!)v=NY wEMg~Hh iBy
^ Utility.log(nFileLength); 3Fl!pq] o%$'-N B3-;]6 return nFileLength; !i*bb~ } ucgp=bye g=_@j` o2r)K AA //保存下载信息(文件指针位置) V
j"B/@ private void write_nPos() 3v7*@(y { oJbMUEQQq try{ ecG,[1]; output = new DataOutputStream(new FileOutputStream(tmpFile)); 5p`.RWls output.writeInt(nStartPos.length); "L~qsFL for(int i=0;i<nStartPos.length;i++) E G3?C { kqyPb$Wy // output.writeLong(nPos); .iXIoka output.writeLong(fileSplitterFetch.nStartPos); (2fWJ% 7VG output.writeLong(fileSplitterFetch.nEndPos); +4*jO5EZ } Jx_BjkF output.close(); yJGM"$ } tp3]?@0 catch(IOException e){e.printStackTrace ();} 1T@#gE["Ic catch(Exception e){e.printStackTrace ();} :q,tmk h } /R%
Xkb vS_Ji<W~E Y}Gf%Xi, //读取保存的下载信息(文件指针位置) ,ThN/GkSC private void read_nPos() CBvvvgI o { .PJCBTe try{ mcFJ__3MAV DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); eQQ*ZNG int nCount = input.readInt(); J52- qR/ nStartPos = new long[nCount]; HE0@`(mCpa nEndPos = new long[nCount]; !<2%N3l for(int i=0;i<nStartPos.length;i++) #2\
0#HN { sj& j\<( nStartPos = input.readLong(); F.[E;gOTo nEndPos = input.readLong(); %;-]HI } _bm8m4Lk input.close(); m^M sp:T, } W+&<C#1|] catch(IOException e){e.printStackTrace ();} TCI%Ox|a catch(Exception e){e.printStackTrace ();} _cw~N
p } s}5,<|DL 0l&#%wmJ, (_aM26s private void processErrorCode(int nErrorCode) dnW #" { %SHgXd#X System.err.println("Error Code : " + nErrorCode); F&= X/ } K.T.?ug;: n?=d)[] 1x8zub B //停止文件下载 y/(60H,{{ public void siteStop() \p%,g&^ x { nhZ^`mP bStop = true; @j/|U04_Z for(int i=0;i<nStartPos.length;i++) n#Y=y# fileSplitterFetch.splitterStop(); Q]v>< e[
9 ;[,r./XmH } 4[o/p8*/ } cU //负责部分文件的抓取 a\@k5? **FileSplitterFetch.java J+o6*t2| */
x $@Gp package NetFox; _d`)N &u}]3E'-k :*6#(MX import java.io.*; {^jk_G\ys import java.net.*; lI*uF~ 'D iu9 <]1k 5tG\5
public class FileSplitterFetch extends Thread { s`63
y&Z[ |h6u%t2AY {)L*\r String sURL; //File URL ]XS[\qo long nStartPos; //File Snippet Start Position 3UX/ long nEndPos; //File Snippet End Position 4?2$~\
x int nThreadID; //Thread's ID }3DZ`8u boolean bDownOver = false; //Downing is over >o_cf*nx boolean bStop = false; //Stop identical /nas~{B FileAccessI fileAccessI = null; //File Access interface r;C
BA'Z &hco3HfW (aTpBXGr= public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException @}+F4Xh,L { Ak'=/`+ p this.sURL = sURL; T5gL this.nStartPos = nStart; EjDr
this.nEndPos = nEnd; qQ
T^d nThreadID = id; Mr6 q7 fileAccessI = new FileAccessI(sName,nStartPos);//定位 l?Qbwv} } D]StDOmM "t!_bma N}rc3d# public void run() XKQ\Ts2<k { !0DOj[" while(nStartPos < nEndPos && !bStop) MLk%U 4 { WLkfo6Nw `vc?*" )r|Pm-:A{ try{ IQNvhl.{ URL url = new URL(sURL); UJ^MS4;I3 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8^2E77s4U httpConnection.setRequestProperty("User-Agent","NetFox"); 3:ELYn String sProperty = "bytes="+nStartPos+"-"; V|`w/P9g4 httpConnection.setRequestProperty("RANGE",sProperty); g3Z"ri~!G Utility.log(sProperty); ,JONc9 3U!#rz" ..a@9#D InputStream input = httpConnection.getInputStream(); /4wPMAlb //logResponseHead(httpConnection); CjT]!D)s E~K5n2CI f C_H0h3 byte[] b = new byte[1024]; &(/QJ `*8 int nRead; l`(pV ;{W while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ';iLk[ { gH<A.5 xy nStartPos += fileAccessI.write(b,0,nRead); ^P~NE#p5 //if(nThreadID == 1) 'eDV-cB // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); :211T&B%A_ } +
X0db -hpC8YS ~;D5j ) 9I Utility.log("Thread " + nThreadID + " is over!"); sB+
B,DF bDownOver = true; Y'eE({)<K //nPos = fileAccessI.write (b,0,nRead); s_RUb } rOA{8)jIa* catch(Exception e){e.printStackTrace ();} Ds@nuQ } C]GW u~QF } -![>aqWmj1 V \Sl->: YX{c06BHs //打印回应的头信息 E*G{V j public void logResponseHead(HttpURLConnection con) ]3&BLq { JK9 J;c#T for(int i=1;;i++) GS&iSjw { ipH'}~=ID String header=con.getHeaderFieldKey(i); K!jMW if(header!=null) )7;E,m<:tO //responseHeaders.put(header,httpConnection.getHeaderField(header)); gq~6jf> Utility.log(header+" : "+con.getHeaderField(header)); 7I;A5f else eccJt break; ,f)#&}x*2+ } 0jmPj } (!"&c*
< IEeh9:Km 3#Qek2 public void splitterStop() p|RFpn2ygF { \wM8I-f! bStop = true; fA" VLQE } -v & |@Sj:^cJD l0nm>ps'D } _,bDv`>Ra sMNhD/bb G-Dc(QhU& /* b 67l\L **FileAccess.java cu )w6!f *//文件访问(定位,写) wq
=Ef package NetFox; e763yd import java.io.*; #CTeZ/g r9y(j
z 7x//4G public class FileAccessI implements Serializable{ eYD -8* 6O|
rI>D //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 vV*i)`IXe RandomAccessFile oSavedFile; 0.z\YTZ9 long nPos; MNu\=p\Eq s]'EIw}mo {2T;^+KE public FileAccessI() throws IOException qj:\)#I { A40Q~X this("",0); [Nv)37|W } g\A kf SK t&BnW vNSeNS@jxC public FileAccessI(String sName,long nPos) throws IOException v18OUPPX { v!6IH oSavedFile = new RandomAccessFile(sName,"rw"); F/w*[Xi
Sh this.nPos = nPos; v/[*Pze,C oSavedFile.seek(nPos); Rg\D-F6: } Yc2dq e> ,HECHA_" (Q F-=o public synchronized int write(byte[] b,int nStart,int nLen) A#Ne07d { ?4H>1Wkb int n = -1; JN> h: try{ Apbgm[m|{ oSavedFile.write(b,nStart,nLen); z#Db~ n = nLen; E@CK.-N| } EPd
catch(IOException e) 0;Z] vl/| { `L7Cf&W\l8 e.printStackTrace (); |{9&!=/qf } }II)<g' 0T.kwZ8 >^J return n; |H&&80I } h%8C_mA o@uZU4MM n0%5mTUN } X1FKcWv wuKr9W9Xa > K s. /* b:(t22m#? **SiteInfoBean.java %6cbHH */
ES ?6 package NetFox; bsdT>|gW G0b##-.'^ ,iMdv+ public class SiteInfoBean { p@[n(?duC. h)h%y)1 4MPR private String sSiteURL; //Site's URL k\Z@B!VAq private String sFilePath; //Saved File's Path FJ{6_=@D private String sFileName; //Saved File's Name 6ac_AsFK private int nSplitter; //Count of Splited Downloading File {ug* -7(,*1Tk d:JP935 public SiteInfoBean() wj 15Og? {//nSplitter的缺省值为5 m_h$fT8
_ //default value of nSplitter is 5 Wiere0 2* this("","","",5); Ls/*&u } |u_fVQj d5#z\E?? XVzsqi*Z public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) CG]/. { 7=a=@D[ sSiteURL= sURL; 4azqH;i sFilePath = sPath; lQ!(lPh sFileName = sName; ~ugH2jiB this.nSplitter = nSpiltter; Y
lhKP; bA\(oD+: xwa@h}\# } W<T
Ui51Y (kL(:P/ @BMuov public String getSSiteURL() +c' n,O~3 { !112u#V return sSiteURL; I|.
< } Xh@;4n IubzHf _71&".A public void setSSiteURL(String value) ~WKWx.ul { }% `f%/ sSiteURL = value; V?"1&m&E } TTD#ovo' w}0rDWuR[ @YbZ"Jb public String getSFilePath() _V(FHjY { zuI7Px return sFilePath; (&Mv!6] } K)GpQ|4:< ?^WX]SAl 5V8`-yO9 public void setSFilePath(String value) cp2a @ { *0x!C8*`Xe sFilePath = value; =55V<VI } 2hY"bpGW k_`YVsEYP lw_@(E]E public String getSFileName() aj]pN,g@N { KN'twPFq return sFileName; \0.!al0 } 't+'rG6x j+[oZfH |}Mt hj9n public void setSFileName(String value) ^+x ,211f { >OKc\m2%Q sFileName = value; TGuCIc0B{ } t(1gJZs>kX T'a& `a5,5}7v%` public int getNSplitter() A`1-c { &'u%|A@ return nSplitter; ]l^"A~va } zqxN/H]z ?MOjtAG0_~ )i[K1$x2 public void setNSplitter(int nCount) F&HvSt}l5 { _mTNK^gB nSplitter = nCount; `2`h4[^ [X } # blh9.V&F } pV*d"~T @ 1FWBH~ jQ['f\R /* [nLd> 2P **Utility.java `KUL4) g~ */ g ,yB^^% package NetFox; GW2v&Ul7( K~+x@O* A>6_h1 public class Utility { Awe'MG p% x\pygzQ/ :=\`P public Utility() d?><+!a { |nY+Nen7 5hfx2O) J9P\D! } GQ}R xu]
j]m|}n //线程睡眠 XsX];I{E, public static void sleep(int nSecond) 'y7<!uo? { S+l>@wa)| try{ 6C!TXV' Thread.sleep(nSecond); jF-0 fK;)* } c3*9{Il^ catch(Exception e) +/rh8? { -^t&U]
g e.printStackTrace ();
TIxlLOs } |;R-q8 } lHO.pN`2 jV' tcFr4 //日志 caZEZk#r; public static void log(String sMsg) GK&R.R] { FYH^axpp System.err.println(sMsg); ;Bat--K7+ } [Vj|fy4 SDO~g ~NTp +'aG{/J public static void log(int sMsg) mV}eMw { (, $Lp0mB7 System.err.println(sMsg); n +dRAIqB }
5"w% } Tx(=4ALY 7eG@)5Uy ,.V=y% /* aZCxyoh + **TestMethod.java D!D}mPi[ */ 1~[GGl package NetFox; ~e=KBYDBu S9 @*g3 5K00z?kD2V public class TestMethod { M] W5%3do LP) IL~ QY$4D;M`g6 public TestMethod() ^?T,>ZI { ///xx/weblogic60b2_win.exe Q`Ug tL try{ c}w[T SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); MJ.Kor //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); E#n:d9WA: SiteFileFetch fileFetch = new SiteFileFetch(bean); f0g&=k{OD fileFetch.start(); \8`^QgV`@ } kp*BAQ catch(Exception e){e.printStackTrace ();} H}lbF0` aq8mD^j -& cd$,, } }TU2o3Q o+?Ko=vYw ,62BZyT,T, public static void main(String[] args) >2tosxH M { 3,Bm"'b6 new TestMethod(); b2YOnV } P>
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