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/* "Y@q?ey[1 **SiteFileFetch.java 59i2*<k */ PcI~,e% package NetFox;
V Ds0+RC import java.io.*; Q\N >W+d import java.net.*; 4*HBCzr7[ N6> rU #qv!1$}2 public class SiteFileFetch extends Thread { u=Xpu,q P"o|kRO Z[>fFg~N4 SiteInfoBean siteInfoBean = null; //文件信息Bean 8U}+9 long[] nStartPos; //开始位置 I'[;E.KU long[] nEndPos; //结束位置 6OqF-nso[E FileSplitterFetch[] fileSplitterFetch; //子线程对象 umCmxmr& long nFileLength; //文件长度 D
!{e boolean bFirst = true; //是否第一次取文件 \fp'=&tp~a boolean bStop = false; //停止标志 cp0yr:~ File tmpFile; //文件下载的临时信息 ~(B%E' DataOutputStream output; //输出到文件的输出流 "=LeHY=9 KtArV //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) c'mg=jH public SiteFileFetch(SiteInfoBean bean) throws IOException \:+ NVIN { zGy+jeH:. siteInfoBean = bean; <p-@XzyE //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); :jC$$oC]. tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); e X6o7a if(tmpFile.exists ()) Q<KF<K'0hg { GMB3`&qh bFirst = false; sL;;'S& read_nPos(); <[ u(il } ? cn`N| else \U##b~Z,g { h
B_p nStartPos = new long[bean.getNSplitter()]; _>;{+XRX[ nEndPos = new long[bean.getNSplitter()]; XVb9)a } ;Sg,$`] i0*Cs#(=h <j/wK]d*/ q=-h#IF^ } 6ND*L0 T3LVn<Lm\ *`LrvE@t public void run() Y*{5'q+2 { c
*<m. //获得文件长度 btC6R>0 //分割文件
p.b#RY //实例FileSplitterFetch 2
/*z5 //启动FileSplitterFetch线程 H!Dj.]T //等待子线程返回 _!Pi+l4p/} try{ D7muf if(bFirst) sH'0utD#Y { IiJ$Ng nFileLength = getFileSize(); '=xO?2U-Z if(nFileLength == -1) 72_+ b { Jd',v System.err.println("File Length is not known!"); }EP}D?Mmu } ii>^]iT else if(nFileLength == -2) /I{K_G@ { 8&3&^!I System.err.println("File is not access!"); p"- %~%J= } a .?AniB0 else BOP7@ D { RLzqpE<rJ for(int i=0;i<nStartPos.length;i++) $!TMS&Wk { j5A>aj nStartPos = (long)(i*(nFileLength/nStartPos.length)); (44L8)I.D } )>U"WZ'< for(int i=0;i<nEndPos.length-1;i++) 3Bvz& `\ { K9yZG nEndPos = nStartPos[i+1]; J<4_<.o(a } qg|ark*1u nEndPos[nEndPos.length-1] = nFileLength; Gm \)1b } Z'l!/l! } >AY9F|:
+U%epq >< P<k& //启动子线程 7=Pj}x) fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; j>l for(int i=0;i<nStartPos.length;i++) Bjj=UtI { ~)[pL(4 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2J%L%6z8~ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), IXlk1tHN4I nStartPos,nEndPos,i); BE],PCpPr Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 0c1=M|2 fileSplitterFetch.start(); l!W!Gz0to } (I(U23A~ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _a|g
> siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ^)a:DKL // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", -B!
a
O65^ nEndPos = " + nFileLength); ;uv$>Fauk // fileSplitterFetch[nPos.length-1].start(); !VsdKG) >[wB|V5 ,?IXfJ`c //等待子线程结束 G2 V$8lh //int count = 0; p#-=mXE/2 //是否结束while循环 mAY/J0_ boolean breakWhile = false; qh&q<M Z;BEUtR
c rdtzz#7 while(!bStop) &;p}HL, { g1_z=(i`Z write_nPos();
?^MH:o Utility.sleep(500); .Cs'@[Ciy breakWhile = true; .IVKgQ
B J><hrZ x]?V*Jz for(int i=0;i<nStartPos.length;i++) vu}U2 0@ { !0UfX{. if(!fileSplitterFetch.bDownOver) ;l<Hen* { 49O_A[(d breakWhile = false; =<)/lz] H break; (l9jczi } /u`Opv&I } <P&X0S`O if(breakWhile) Vpzjh,r-j break; Y C<FKWc xj&~>&U){; 6c27X/'Z //count++; 2PUB@B'
+ //if(count>4) wZbT*rU // siteStop(); $sZ4r>- } SG&H^V8 f)gV2f0t Eza^Tbq%j? System.err.println("文件下载结束!"); AE`UnlUSF } e%4vvPp catch(Exception e){e.printStackTrace ();} {f*{dSm9b } |2=w":2# (~! @Uz5 *CAz_s< //获得文件长度 .y_ ~mr&d public long getFileSize() _3O*"S=1 { nD>X?yz2 int nFileLength = -1; :_2:Fh.}3~ try{ oL }d=x/ URL url = new URL(siteInfoBean.getSSiteURL()); HU|qeSyel HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); N~or.i&a httpConnection.setRequestProperty("User-Agent","NetFox"); odJE~\\hw H!,V7R .x/H2r'1 int responseCode=httpConnection.getResponseCode(); !vc5NKv#n if(responseCode>=400) DYC2bs> { UEm4):/} processErrorCode(responseCode); 3-n&&< return -2; //-2 represent access is error @{Fa=".Ch } l&"bm C:xr v&%W*M0q@ [nX{sM% String sHeader; -;RAW1]}Y$ TaKHr$h .L^;aL for(int i=1;;i++) ^h#A7 g { +iQ~ Y2Gh //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); &hi][Pt //Utility.log(in.readLine()); IM[=]j.? sHeader=httpConnection.getHeaderFieldKey(i); wN6sica| if(sHeader!=null) rq1~%S { EG8z&^O x if(sHeader.equals("Content-Length")) A)d0Z6G` { E5c)\
D nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); <5CQ#^cK break; A e2Y\ sAV } @Eh(GZN } XRyeEwA;pp else m9jjKu]| break; ;i+(Q%LO } Z3ODZfu> } W=|'&UU Ul catch(IOException e){e.printStackTrace ();} ]^{5` catch(Exception e){e.printStackTrace ();} 0tMzVxS NcX-*o ,'l.u?SKyd Utility.log(nFileLength); (4`Tf*5hHa qEdY]t h\Zh^B6J return nFileLength;
!y!s/i&P% } @cm[]]f'l KK-+vq 2!{_x8,n //保存下载信息(文件指针位置) ,5K&f\ private void write_nPos() ?6I`$ &OA { A^0-%Ygl try{ ?o/p}6 output = new DataOutputStream(new FileOutputStream(tmpFile)); ilQ\+xR{b output.writeInt(nStartPos.length); a"1LF` for(int i=0;i<nStartPos.length;i++) to#2. { F0r5$Pl* // output.writeLong(nPos); HBk5p>& output.writeLong(fileSplitterFetch.nStartPos); R\$6_ output.writeLong(fileSplitterFetch.nEndPos); 40-/t*2Ly } ]Rp<64I o output.close(); %VXIiu[ } ~wGjr7Wt catch(IOException e){e.printStackTrace ();} /\1Q
:B3W catch(Exception e){e.printStackTrace ();} SxC(:k2b; } MzlE lb"T'}q S%7bM~J@ //读取保存的下载信息(文件指针位置) AJRiwP|H+ private void read_nPos() }2Im?Q { *t={9h try{ >Wpd q( o DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); R9+f^o`W int nCount = input.readInt(); +ZBj_Vw*| nStartPos = new long[nCount]; R~N%sn nEndPos = new long[nCount]; K:pG<oV|} for(int i=0;i<nStartPos.length;i++) 1'B=JyR~K { :n
x;~f nStartPos = input.readLong(); SBw'z(U nEndPos = input.readLong(); _,- \; } )S_%Ip input.close(); )MX%DQw } x}reeqn catch(IOException e){e.printStackTrace ();} Ja@?.gW catch(Exception e){e.printStackTrace ();} T16B2|C"Y } `X`|]mWj ^1--7#H 2Paw*"U private void processErrorCode(int nErrorCode) `WQpGBS_z_ { lw4#C`bx System.err.println("Error Code : " + nErrorCode); ({!*&DVu } |txzIc.# }yCgd 5+_ uuCVI2| //停止文件下载 _b=})** public void siteStop() o%Qn%gaX { wo^1%:@/2 bStop = true; F#efs6{ for(int i=0;i<nStartPos.length;i++) !}xRwkN fileSplitterFetch.splitterStop(); CR|>?9V `R$bx 64 O}7aX ' } \l 3M\$oS> } |e3YTLsI //负责部分文件的抓取 ,z0E2 **FileSplitterFetch.java U(:t$SBKy */ eA/}$.R package NetFox; |'#uV)b0@ uYc&Q$U Zo,]Dx import java.io.*; 6AmFl< import java.net.*; l02aXxT)] y"nCT3 Mz6|#P}.s public class FileSplitterFetch extends Thread { Z?w=- +T7FG_ 89A04HX String sURL; //File URL E95VR?nUg long nStartPos; //File Snippet Start Position ] m^ECA$ long nEndPos; //File Snippet End Position .MRLAG int nThreadID; //Thread's ID sF#t{x/sW boolean bDownOver = false; //Downing is over It^_?oiK boolean bStop = false; //Stop identical /3~}= b FileAccessI fileAccessI = null; //File Access interface sZU
Ao& tLx8}@X" ]}AyDy6C public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException v8A{q { DAd$u1 this.sURL = sURL; 9,
792b this.nStartPos = nStart; 11yS2D
this.nEndPos = nEnd; u+8?'ZT, nThreadID = id; 2l4`h)_q fileAccessI = new FileAccessI(sName,nStartPos);//定位 Al]z= } k:zGv :.\h.H; XpOQBXbt public void run() {*4Z9.2c* { \V.U8asfI while(nStartPos < nEndPos && !bStop) s-xby~ { VnMiZAHR E}=F
~3m}
EL try{ &oiBMk`* URL url = new URL(sURL); z[_Gg8e HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); O<w7PS httpConnection.setRequestProperty("User-Agent","NetFox"); ,[Z;"wE String sProperty = "bytes="+nStartPos+"-"; `#N7ym;s@ httpConnection.setRequestProperty("RANGE",sProperty); 1uhSP!b Utility.log(sProperty); i'vjvc~ q]t^6m&- Ad`jV_z InputStream input = httpConnection.getInputStream(); 1Aa=&B2 //logResponseHead(httpConnection); 8f|+045E@ .DHRPel SkA"MhX byte[] b = new byte[1024]; '~'3x4Bo int nRead; @BXV>U2B{ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) %|3UWN { Ehf{Kl nStartPos += fileAccessI.write(b,0,nRead); V?cUQghHg //if(nThreadID == 1) aD3Q-a[ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5($
'@u } pG:)u
cj u@zBE?
g r7p>`>_Q\ Utility.log("Thread " + nThreadID + " is over!"); zL3'',Ha bDownOver = true; doaqHri\, //nPos = fileAccessI.write (b,0,nRead); S-+^L| } meV
RdQ catch(Exception e){e.printStackTrace ();} 1YMu\( } x;*KRO } bwh.ekf8 qT L@N9 !b+Kasss9 //打印回应的头信息 D<cHa | public void logResponseHead(HttpURLConnection con) V]9?9-r { 3bPvL/\Lb for(int i=1;;i++) ~UJ_Rr54 { KcjP39@I String header=con.getHeaderFieldKey(i); I*K~GXWs# if(header!=null) DavG=kvd //responseHeaders.put(header,httpConnection.getHeaderField(header)); `_v|O{DC{ Utility.log(header+" : "+con.getHeaderField(header)); ^UK6q2[ else x_5H_! \# break; sxLq'3( } !P0Oq)q } ?wx|n_3<: 1cdM^k bdCpGG9 public void splitterStop() etH%E aF[ { dGzZ_Vf bStop = true; *l^%7Wrk } 4<&`\<jZ qcfLA~y _#+~#U%5n } Kq';[ Yc kSw.Q2ao IPnbR)[% /* &u_f:Pog **FileAccess.java 6]^}GyM! *//文件访问(定位,写) l8hOr yB& package NetFox; [?hc.COE import java.io.*; o3l_&?^ /^\6q"' ?J~(qa a; public class FileAccessI implements Serializable{ Y75,{1\l0 RW|3d<Fj //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Y m|zM1qc RandomAccessFile oSavedFile; Ro?aDrQ long nPos; S:Ne g!` FXOA1VEg l7P~_X_)" public FileAccessI() throws IOException fNx3\<~V= { X] &Q^ this("",0); @DrMaTr }
/E@| $R7n1 ?8n`4yO0 public FileAccessI(String sName,long nPos) throws IOException nrMm](Y45 { DEL#MD! oSavedFile = new RandomAccessFile(sName,"rw"); *#,wV
this.nPos = nPos; Jx@3zl oSavedFile.seek(nPos); .4~n|d>z } n||/3-HDj _}7N,Cx =x~HcsJ8!R public synchronized int write(byte[] b,int nStart,int nLen) +)FB[/pXk { W9?Vh{w int n = -1; nj~1y') try{ C_Y^< oSavedFile.write(b,nStart,nLen); ^~2GhveBV n = nLen; 0t1WvW } )sVz;rF< catch(IOException e) <w.W[ak { V 3-5:z e.printStackTrace (); b$+.}&M } 0Q=4{*:? A5zT^!`[ w Maib3Q return n; fNc3&=]] } LzS@@'] RUmJ=i'4/ ZUb6d*B } \&J7>vu^y hd.^ZD7 v3Y/D1jd" /* *.AokY)_a **SiteInfoBean.java 4QZ -7_ */ k#%BxT package NetFox; &'UYV> aO?(ZL e/EfWwqt public class SiteInfoBean { B]q
&?~ ~&=-* }N1Z7G private String sSiteURL; //Site's URL jx&pRjP
private String sFilePath; //Saved File's Path ]C-hl}iq private String sFileName; //Saved File's Name ]%3o"| private int nSplitter; //Count of Splited Downloading File g6k@E,cI_ YsXP$y]g- z{cI G8z public SiteInfoBean() ]n0kO& {//nSplitter的缺省值为5 vW
0m% //default value of nSplitter is 5 yK<%AV@v this("","","",5); utC]GiR } ;-47d ^ 69 R8#M impzqQlZ, public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) c.Pyt {
Q d]5e sSiteURL= sURL; ;$=`BI) sFilePath = sPath; 0 }k[s+^ sFileName = sName; ig]*Z this.nSplitter = nSpiltter; P'GX-H TGGeTtk= j8!fzJG } 9. Q;J#;1 (t1:2WY@ 1"009/| public String getSSiteURL() |r!G(an1x4 { *? 7Ie;) return sSiteURL; DF/p{s1Y3 } l.?R7f r>sk@[4h Z}TuVE public void setSSiteURL(String value) <P7f\$o~ { &C<B=T"I sSiteURL = value; |_8-3 } ,2/qQD n/ 6$w)"Rq y iE[^2Pv public String getSFilePath() FJgr=9> { &Jv j@,>$d return sFilePath; |f&)@fUI } .R;HH_ UHF.R>Ry 8*I43Jtlf, public void setSFilePath(String value) ?h"+q8& { Xz&Hfs"/J sFilePath = value; kehv85 } kN>%y&cK c%r?tKG6 }kdYR#{s public String getSFileName() V}=9S@$o { +.whEw(i return sFileName; 8E"Ik~ } UMuqdLaT9 Gvw4ot/ ~mx me6"v public void setSFileName(String value) 7OG=LF*V- { aR ao\Wp| sFileName = value; p#)u2^ } P
Ig)h-w? _ro^<V$% 8Br* public int getNSplitter()
;?1H& { 2Otd return nSplitter; W)ihk\E } sH(4.36+ r.0IC*Y 2ixg
ix public void setNSplitter(int nCount) }BS.OK? { iXK.QktHw nSplitter = nCount; ilEWxr;, } 3:7J@> } -z./6dQ :TqvL'9o j{SRE1tqh /* {$)zC*l **Utility.java r5> FU>7' */ _?kjIF package NetFox; p<*3mbgGO -gefdx6ES F]\(p=U. public class Utility { jt?4raNW !*ct3{m >
$DMVtE0 public Utility() w d2GKq! { 3r!6Z5P7{' /Pv
d[oF n]?Yv E } AHc:6v^ :oYu+cQ //线程睡眠
i-w^pv' public static void sleep(int nSecond) q%%8oaEI { NypM+y try{ @&t';"AE Thread.sleep(nSecond); hJ\IE?+ } 1r;]== catch(Exception e) VliX'.- { 0B#9CxU% e.printStackTrace (); Y
m=ihQ| } O|=5+X } x1</%y5ev 56t9h/y //日志 6z=h0,Y} public static void log(String sMsg) c[J(H,mt/ { A}pmr System.err.println(sMsg); zgRZgVj } =B<>H$ r:lv[/D a|rN %hA4 public static void log(int sMsg) ~=91Kxf { A&X(\ c M System.err.println(sMsg); EjW3_ % } sS(t
}$ } &NZl_7PL =(:{>tO_" 0YK`wuZGS /* =NLsT.aa **TestMethod.java gcDo o2RE */ ms2y[b package NetFox; =&G<^7 /RU'~( vaN}M)W/ public class TestMethod { u U Xj S`g:zb_ 1.*VliY public TestMethod() &<hDl<E { ///xx/weblogic60b2_win.exe ,(&jG^IpVJ try{ )@+lfIE(l SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); IlQNo 1 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); X^;[X~g SiteFileFetch fileFetch = new SiteFileFetch(bean); %;ZWYj`]n fileFetch.start(); w/_n$hX } FN jT?* catch(Exception e){e.printStackTrace ();} Cq\1t !wP|t#Sc9 =OY&;d!C } z{XN1'/V &c!d}pU} \1|]?ZQ\ K public static void main(String[] args) aK>5r^7S { !kCMw%[ new TestMethod(); b-4gHW } ZslH2#
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