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/* {BKr/) H **SiteFileFetch.java Q!dNJQpb */ K# dV. package NetFox; f;
1C) import java.io.*; 7lz"^ import java.net.*; :X;AmLf`2u O<v9i4* Skd,=r public class SiteFileFetch extends Thread { oZ(T`5 " |l-NUe zn|/h,. SiteInfoBean siteInfoBean = null; //文件信息Bean `Dco!ih long[] nStartPos; //开始位置 *m[ow s long[] nEndPos; //结束位置 e.IKmH]z FileSplitterFetch[] fileSplitterFetch; //子线程对象 =K2mR}n\; long nFileLength; //文件长度 D*R49hja{ boolean bFirst = true; //是否第一次取文件 tgbr/eCoU boolean bStop = false; //停止标志 ^J=l] l File tmpFile; //文件下载的临时信息 xPi/nWl`| DataOutputStream output; //输出到文件的输出流 `?ijKZ}y5 U:. //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) X4R+Frt8 public SiteFileFetch(SiteInfoBean bean) throws IOException }6Uw4D61 { p7;/| ]o3 siteInfoBean = bean; Ih.6"ISK} //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &zYo tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 2 nRL;[L*. if(tmpFile.exists ()) E5<}7Pt { VfiMR%i} bFirst = false; NN9`jP2 read_nPos(); H `V3oS~} } (fjAsbT else ]7, mo { /8SQmh$+e nStartPos = new long[bean.getNSplitter()]; 6*<=(SQI nEndPos = new long[bean.getNSplitter()]; nVC:5ie } 1wa zJj=v hd2 X/" @{Q[M3l +0Rr5^8u } bt,^-gt@ zW_V)UNe VBIY[2zf public void run() 6"Km E} { *8uSy/l //获得文件长度 btK| U //分割文件 l*|^mx^Q //实例FileSplitterFetch Dm j^aFB0| //启动FileSplitterFetch线程 ?[K+Ym+ //等待子线程返回 pH%cbBm try{ T7AFL= if(bFirst) lMX 2O2 o { AFWcTz6 #d nFileLength = getFileSize(); bN$!G9I!, if(nFileLength == -1) xP.B,1\X { u":D{+wC| System.err.println("File Length is not known!"); eiJO;%fl>l } *=1;HN3 else if(nFileLength == -2) \guZc}V]:\ { U
n#7@8, System.err.println("File is not access!"); oQC* d}_E} } "msCiqF{z else .#uRJo%8 { ${#5$U+kI for(int i=0;i<nStartPos.length;i++) ,P ?TYk { *hAeA+: nStartPos = (long)(i*(nFileLength/nStartPos.length)); :z^ps0 } ]],6Fi+
for(int i=0;i<nEndPos.length-1;i++) UAT46 { I?v)>||Q nEndPos = nStartPos[i+1]; aW7{T6., } aC>r5b#: nEndPos[nEndPos.length-1] = nFileLength; cve(pkl } $V~r*#$. } e_+`%A+- 4:8#&eF 13.v5 v,l //启动子线程 WIXzxI<) fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; y6'Fi(2yw for(int i=0;i<nStartPos.length;i++) H*3f8A&@s { ,~FyC_%*
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5+GW%U/ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), h)q:nlKUW nStartPos,nEndPos,i); PG9won5_ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !%NxSJ fileSplitterFetch.start(); PGMu6$ } 7Nc@7_=
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x{u_kepv[k siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); [kzcsJ'/e // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", $nQ; ++ nEndPos = " + nFileLength); Q{!lLka // fileSplitterFetch[nPos.length-1].start(); M}}9 3O<<XXar {o7ibw=E) //等待子线程结束 ^aDos9SyV //int count = 0; gLQWL}0O //是否结束while循环 "uCx.Q9ef boolean breakWhile = false; T1;yw1/m5\ ]y$D@/L@ r!yrPwKL while(!bStop) 71cc6T { ?]f+)tCMs write_nPos(); (o{-1Dg) Utility.sleep(500); F8YD: breakWhile = true; uJMF\G=nb $Ha?:jSc e%N\Pshgv for(int i=0;i<nStartPos.length;i++) Z?[;Japg { "j3Yu4_ks if(!fileSplitterFetch.bDownOver) |Wj)kr !| { F {]: breakWhile = false; @y->4`N break; q^Lj)zmnK } ^o"9f1s 5 } P6S^wjk if(breakWhile) 8nQlmWpJ break; a9"x_IVU OnF+ @\Sa) //count++; oScHmGFv //if(count>4) iBxCk^ // siteStop(); eGvHU ;@ } :q;vZ6Xd TF|GGYi TxwZA System.err.println("文件下载结束!"); q NU\XO`H } 88d0`6K-9 catch(Exception e){e.printStackTrace ();} 17H_>a\` } O~9
%!LAu *FR
Eh@R C>N)~Ut //获得文件长度 <|Bh;; public long getFileSize() Hy|$7]1 { "f~S3 ?^!2 int nFileLength = -1; i+Px &9o<9 try{ w@nN3U+ URL url = new URL(siteInfoBean.getSSiteURL()); ;Y
j_@= HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); :doP66["! httpConnection.setRequestProperty("User-Agent","NetFox"); =iRc& 0^]E-Zf 7&:gvhw int responseCode=httpConnection.getResponseCode(); U[c,cdA if(responseCode>=400) 9/{+,RpC
{ @;fdf 3ian processErrorCode(responseCode); <QugV3e return -2; //-2 represent access is error Ngu+V } QSAz:Yvf| ]$4 k+)6 ~ra2Xyl String sHeader; G|'DAj% '- 4);:(^ u\ytiGO* for(int i=1;;i++) JQ%e' { 6t*pV
[ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -/B}XNW //Utility.log(in.readLine()); CP |N2rb sHeader=httpConnection.getHeaderFieldKey(i); "\vEi
&C if(sHeader!=null) $[VKM|Zjw { I(s\ Q[ if(sHeader.equals("Content-Length")) c|:H/Y2n| { MH?|>6 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); PD$ay^Y break; :'f#0 ox } aa.EtKl } l\ts!p4f$ else hp%|n:.G break; 4M6o+WV } Q68&CO(rE } P_z3TK catch(IOException e){e.printStackTrace ();} zW!3>(L/ catch(Exception e){e.printStackTrace ();} 3 {\b/NL$ z\oq b)a "7JO~T+v Utility.log(nFileLength); %^p1ax &tj0Z: n9050&_S return nFileLength; ?<#6= } rfkk3oy ch 4z{7 82YTd(yB //保存下载信息(文件指针位置) $s/N;E!t private void write_nPos() 9-Ikd>9 { tt{,f1v0t try{ .2C}8GGC' output = new DataOutputStream(new FileOutputStream(tmpFile)); gvr"F output.writeInt(nStartPos.length); +%7yJmMw for(int i=0;i<nStartPos.length;i++) a/NmM) { 9 @!Og(l // output.writeLong(nPos); DFwkd/3" output.writeLong(fileSplitterFetch.nStartPos); (NFq/w% output.writeLong(fileSplitterFetch.nEndPos); ^a[7qX_B } gkI(B2,/ output.close(); a^~T-;_V } n (C*LK catch(IOException e){e.printStackTrace ();} XK`>#*"V catch(Exception e){e.printStackTrace ();} [kt!\- } 8ysU.5S -=&r}/& (Vf&,b@U_ //读取保存的下载信息(文件指针位置) YKJk)%;+w private void read_nPos() |<\o%89AM { _ ;O$ot\5 try{ pT>[w1Kk^ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); al F*L int nCount = input.readInt(); N0O8to}V nStartPos = new long[nCount]; "w*VyD nEndPos = new long[nCount]; 1tDd4r?Y for(int i=0;i<nStartPos.length;i++) 7
}4T)k(a { .</d$FM JE nStartPos = input.readLong(); I+kGEHO} nEndPos = input.readLong(); O"<D0xzF? } )TP1i input.close(); lE78Yl] } /+1+6MqRn* catch(IOException e){e.printStackTrace ();} EFW'D=&h8 catch(Exception e){e.printStackTrace ();} 5n"b$hMF } "9!ln WogJ~N,d53 M`-#6,m3 private void processErrorCode(int nErrorCode) X~*1 { u>
XCE|D* System.err.println("Error Code : " + nErrorCode);
\U(qv(T } F-R4S^eV ZN~:^,PO/ D.kLx@Z //停止文件下载 Ck%nNy29 public void siteStop() 3 q^3znt { ^ b{0|: bStop = true; J(ZYoJ for(int i=0;i<nStartPos.length;i++) &p8b4y_ fileSplitterFetch.splitterStop(); -M2c8P:.b \rn:/ s$4!?b$tw } TppR \[4] } n2zJ' //负责部分文件的抓取 26B]b{Iz{ **FileSplitterFetch.java q(p]6Ha| */ ]R32dI8N package NetFox; "-C.gqoB OBqaf
)W wb~#=6Y import java.io.*; l ~CYxO import java.net.*; Qh<_/X? }dQW-U V|e9G,z~A public class FileSplitterFetch extends Thread { rz+)z:u cK%Sty'8+ "#\\p~D/< String sURL; //File URL %ZF47P%6 long nStartPos; //File Snippet Start Position Au<NUc
2 long nEndPos; //File Snippet End Position a'u:1C^\ int nThreadID; //Thread's ID lK;|ciq"c7 boolean bDownOver = false; //Downing is over ~,3+]ts='\ boolean bStop = false; //Stop identical *`&4<>=n FileAccessI fileAccessI = null; //File Access interface %$}aWzQxll '=C)Hj[D G`8i{3: public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException >Vc;s!R { *WdnP.'Y this.sURL = sURL; Y`
t-Bg!~ this.nStartPos = nStart; ~3bH2,{L[ this.nEndPos = nEnd; Kq&b1x nThreadID = id; ^h
#0e:7< fileAccessI = new FileAccessI(sName,nStartPos);//定位 x8
: } 8-]\C t)o!OEnE LgFF+z public void run() !o +[L { 'b(V8x while(nStartPos < nEndPos && !bStop) 3"afrA { Ot,eAiaX $bSnbU< >F7v'-*{ try{ vt8z=O URL url = new URL(sURL); h2~b%|Pv HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #$k6OlK-r" httpConnection.setRequestProperty("User-Agent","NetFox"); $}_a`~u String sProperty = "bytes="+nStartPos+"-"; qcpAjjK httpConnection.setRequestProperty("RANGE",sProperty); JR>v Utility.log(sProperty); c*R?eLt/ 3>O=d> (.[HE
~ s? InputStream input = httpConnection.getInputStream(); BhFyEY( //logResponseHead(httpConnection); 5}-e9U ~d5f]6#` q8 jI
y@ byte[] b = new byte[1024]; Igb@aGA int nRead; 2x3%*r$ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) '1rHvz`B/" { Y243mq- nStartPos += fileAccessI.write(b,0,nRead); L{)*evBL //if(nThreadID == 1) R/5@*mv{ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); P:Nj;Cxh } Y9^;TQ+# xn1=@0
a .] gY{_|x Utility.log("Thread " + nThreadID + " is over!"); En&`m bDownOver = true; N5m+r.<; //nPos = fileAccessI.write (b,0,nRead); x,LQA0 } 0=g~ozEW& catch(Exception e){e.printStackTrace ();} 67,@*cK3?J } FH Hi/yh } (c3%rM m] m~$S ]Wf tZ4Zj`x|^ //打印回应的头信息 Wbra*LNU public void logResponseHead(HttpURLConnection con) bIs@CDB { RxUABF8b for(int i=1;;i++) *.g@6IkAQ { dJ/(u&N String header=con.getHeaderFieldKey(i); BZUA/;Hz & if(header!=null) ~r%>x //responseHeaders.put(header,httpConnection.getHeaderField(header)); HzuB.B< Utility.log(header+" : "+con.getHeaderField(header)); ItLP&S= else LA\)B"{J break; .LQvjK[N } @ckOLtxE> } @)hrj2Jw b!do7%]i `y%1K|Y= public void splitterStop() fQ.{sQ$@h { |~V`Es +j bStop = true; aNcuT,=(?8 } estDW1i) yKy07<Gr> uW@o,S0: } w26x)(7 v8PH(d2{@ ~4MUac^w /* E]opA$JQ **FileAccess.java ;8VvpO^G/ *//文件访问(定位,写) P R{y84$ package NetFox; (K"8kQLY import java.io.*; =5zx]N1r 6X1_NbC 9gS.G2 public class FileAccessI implements Serializable{ B^{87YR +0)zB;~7 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 F~qiNV RandomAccessFile oSavedFile; (";{@a % long nPos; `% a+LU2 utJz e gJn_Z7Mg J public FileAccessI() throws IOException 'J0Erk8( { ,:G3 Y
) this("",0); E\ 'X|/$a } ab5uZ0@ _jhdqON6E Vv]81y15Q; public FileAccessI(String sName,long nPos) throws IOException vWM'}( { [+j39d.Q oSavedFile = new RandomAccessFile(sName,"rw"); pbM"tr_A{ this.nPos = nPos; c[a1
Md& oSavedFile.seek(nPos); *,Mg } Xy;!Q`h( Z
T5p 6Eu&%` public synchronized int write(byte[] b,int nStart,int nLen) @Z50S 8 { s</llJ$ int n = -1; .W9/*cZV0 try{ !edgziuO oSavedFile.write(b,nStart,nLen); 4Pm+0=E n = nLen; x:Nd>Fb } UdSu:V| catch(IOException e) C}~/(;1V= { Rlq6I?S+ e.printStackTrace (); 7+h*&f3> } wn$:L9"YN 4-YXXi} X?F$jX|c return n; uy,ySBY } A{7N#-h_ ~6hG"t]: I8<s4q
} ElEa*70~g hVfiF v {H3DgyG /* O> \E'Nk$V3 {//nSplitter的缺省值为5 D4"](RXH //default value of nSplitter is 5 h= 3156M this("","","",5); WAj26";M( } {,5=U@J }}GBCXAf_ ,H3C\.%w\ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) .2xp.i{ { !n`ogzOh sSiteURL= sURL; =f)S=0U F sFilePath = sPath; VesO/xG< sFileName = sName; o3;u*f0rWn this.nSplitter = nSpiltter; X-Sso9/q. EO|r zN\~v } NRS!Ox @" ~Mglgw N_vVEIO9 public String getSSiteURL() 7eh|5e$@ { mf26AIlkQ return sSiteURL; y> S.B/d } F_SkS?dB tVhY=X{N? OpwZTy}1} public void setSSiteURL(String value) I +,D,Vg { S?{|qlpy sSiteURL = value; Sa&~\!0t }
,i2%FW |Hbe]2"x> cJ&e^$:Er public String getSFilePath() Ii?"`d +JA { .P=uR8 return sFilePath; ou44vKzS } Z_qs_/y b; SFnZa8 r +]
J {k public void setSFilePath(String value) @o+T<}kW X { SnbH`\U" sFilePath = value; (k"oV>a| } N(?yOB4gt %iI0JF*Ez Z6&s 6MF public String getSFileName() N0c+V["s { `8F%bc54iw return sFileName; ZkYc9!anY } >GiM?*cC {uO8VL5+Qx 9p!V?cH#8 public void setSFileName(String value) n=RAE^[M { k=[!{I sFileName = value; Z'GOp? } /UjRuUC] NQ<~$+{ I}Z[F,}*J public int getNSplitter() *DX6m { Y*``C):K% return nSplitter; wLD/#Hfi7 } ~(B\X?v p5C
sw5 2
G_*Pqc public void setNSplitter(int nCount) a#1LGH7E8 { ewgcpV|spn nSplitter = nCount; vi0% jsI } K0]'v>AWr } w\;=3C` ?ZSG4La\ v,RLN`CID /* 2 c'=^0: **Utility.java @yaBtZUp3 */ +byw*Kk package NetFox; !23W=N}82 }i/&m&VU "zw?AC6 public class Utility { Ul[>LKFY p;j$i6YJ 0|{U"\ public Utility() ]t1)8v2w> { `q e L$` W.\HfJ74 i#1T68y} } Qd!;CoOmZs 44?5]C7 //线程睡眠 6!bA~"N public static void sleep(int nSecond) (k
M\R| { Xr M[8a try{ KLqu[{y.' Thread.sleep(nSecond); ;sNyN# } i TD}gC catch(Exception e) P1
(8foZA { >
Q@*o e.printStackTrace (); (eJr-xZ/ } $t1]w]}d } dqUhp_f2qK F4Ft~:a //日志 U3lr<(r* public static void log(String sMsg) |i?AtOt@f { p`1d'n[ System.err.println(sMsg); X>%2\S } {L$b$u$7: W\U zw,vI -ihF)^"a public static void log(int sMsg) }#<Sq57n { ;y6Jo System.err.println(sMsg); 5vbnO]8 } >o 3X) } 1y0.tdI( 2I ?HBz1v j#&sZ$HQ4 /* 4>Uo0NfL **TestMethod.java l(=#c/f */ ]vQo^nOo package NetFox; PBn(k>=+ (fh:q2E#
NFLmM public class TestMethod {
UUb!2sO $'9r=#EH DGHX:Ft# public TestMethod() 83i%3[L { ///xx/weblogic60b2_win.exe gSR&CnqZ< try{ ~8pf.^,fi SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); a4`@z:l //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 7R))(- SiteFileFetch fileFetch = new SiteFileFetch(bean); bvG").8$ fileFetch.start(); &v4w3'@1 } #yr19i ? catch(Exception e){e.printStackTrace ();} $o]zNW;X ;S`N q%, CM5A-R90 } A$XjzTR nQ$N(2<Fe (m04Z2# public static void main(String[] args) mZ/B:)_ { 1LPfn( new TestMethod(); 'b661,+d } ?783LBe } hD>:WJ 点击下载更多相关资料
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