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/* rss.F3dK **SiteFileFetch.java ,GP4I3D */ _x1[$A,GuB package NetFox; F>(#Af9 import java.io.*; utJVuJw:t import java.net.*; !H=k7s |hQ|'VCN %kFELtx public class SiteFileFetch extends Thread { [Fj+p4*N E?4@C"Na C_ZD<UPA\ SiteInfoBean siteInfoBean = null; //文件信息Bean 4{WV long[] nStartPos; //开始位置 pQ(eF0KG long[] nEndPos; //结束位置 ?iEXFYJG FileSplitterFetch[] fileSplitterFetch; //子线程对象 mCNf]Yz long nFileLength; //文件长度 6cT~irP boolean bFirst = true; //是否第一次取文件 |abst&yp boolean bStop = false; //停止标志 1(7.V-(G File tmpFile; //文件下载的临时信息 uPC qO+f DataOutputStream output; //输出到文件的输出流 &W<>^C2v Yj7= T%5 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) J$9xC{L4 public SiteFileFetch(SiteInfoBean bean) throws IOException qTh='~m4[ { oT (:33$ siteInfoBean = bean; w*xUuwi //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 2*q:
^ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }A)36 if(tmpFile.exists ()) !:O/|.+Vmf { %X,B-h^ bFirst = false; H@2"ove-uC read_nPos(); .4C[D{4 } M?~<w)L} else bqQO E4; { 'W?v.W & nStartPos = new long[bean.getNSplitter()]; <r +!hJ[s' nEndPos = new long[bean.getNSplitter()]; <\d|=>; } Op/79]$ ]O7.ss/2 ,D@;i zdjM%l); } 3q|cZQK!1 [71#@^ye `zzKD2y public void run() *L;pc g8{ { ,P@/=I5 //获得文件长度 n,?IcDU~m //分割文件 s@ 20#D //实例FileSplitterFetch ~6-"i0k
//启动FileSplitterFetch线程 % L ># //等待子线程返回 &8Jg9# try{ )zW%\s*' if(bFirst) Cl t5 { NlF0\+h nFileLength = getFileSize(); .@i0U if(nFileLength == -1) iF [?uF { i[2bmd!H System.err.println("File Length is not known!"); xI@$aTGq } YXX36 else if(nFileLength == -2) t/d' ,Khg { 5PGlR!^ System.err.println("File is not access!"); BSfm?ku"! } fou_/Nrue else =& q-[JW { p<=(GY- for(int i=0;i<nStartPos.length;i++) ePq13!FC/ { JO2ZS6k[ nStartPos = (long)(i*(nFileLength/nStartPos.length)); ^"O{o8l>2 } Sa;<B:| for(int i=0;i<nEndPos.length-1;i++) IpWy)B>Fl3 { 4d^
\l! nEndPos = nStartPos[i+1]; yV:EK{E } ]6t]m2~\ nEndPos[nEndPos.length-1] = nFileLength; *L%6qxl`V } 7Wwp )D } eVw\v#gd N5 SLF4R1 bBUbw *DF) //启动子线程 E`Jp(gK9F fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 9wO/? for(int i=0;i<nStartPos.length;i++) 2;r]gT~ { |SGgy|/a# fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), r0\cc6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), cGgM8 nStartPos,nEndPos,i); uY^v"cw/F Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (jU/Wj!q fileSplitterFetch.start(); ]y3pE}R } ]\CU9J|H8 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(),
<^lJr82 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); [YC=d1F5 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", I
jZ]_*^! nEndPos = " + nFileLength); t)-*.qZh // fileSplitterFetch[nPos.length-1].start(); uYFMv=>j 3B@y &a#& Jy \2I{I' //等待子线程结束 Z?m
-&% //int count = 0; `J72+ RA //是否结束while循环 G1]"s@8( boolean breakWhile = false; 3`8dii N>+ P WE$ <,\ `Psa)N while(!bStop) `AWy!}8 { a%Uw;6|{ write_nPos(); <&4nOt Utility.sleep(500); p6`Pp"J_tr breakWhile = true; B?+.2 G+0><,S M'kVL0p?vN for(int i=0;i<nStartPos.length;i++) $:Rn; { vt//)*(.$ if(!fileSplitterFetch.bDownOver) BR+nL6sU { rJ'/\Hh5P breakWhile = false; 7 _`L$<-n break; lWW+5 } COR;e`%, } OFA{
KZga if(breakWhile) a Sf/4\ break; c! @F ;x-(kIiE g& k58{e //count++; Frk c O //if(count>4) L'lF/qe^ // siteStop(); Cezh l } $(ewk): [QT1Ju64 9M_(He
- System.err.println("文件下载结束!"); +iy7e6P } EeB ]X24 catch(Exception e){e.printStackTrace ();} RPVT*`o } 77V
.["=7 oBA`|yW{U
B$^7h! //获得文件长度 H6gU?9% public long getFileSize() V }>n { Y>BP?l int nFileLength = -1; $<|ocUC7 try{ nBN&.+3t URL url = new URL(siteInfoBean.getSSiteURL()); K^zDNIQU HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); q]\X~
9# httpConnection.setRequestProperty("User-Agent","NetFox"); *:_P8G; w(j^ccPD Tr& }$kird int responseCode=httpConnection.getResponseCode(); ;gMgj$mI if(responseCode>=400) B6]<G- { [iS,#w`
5 processErrorCode(responseCode); 8!mc@$Z return -2; //-2 represent access is error fQ+\;iAU } BByCMY auHFir8f 2 -Xdoxw String sHeader; f?56=& pHY N
j4IQ<OV |>2FRPK for(int i=1;;i++) |.P/:e9 { 7\XE,;4> //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); K>2 #UzW //Utility.log(in.readLine()); Sm-wH^~KA sHeader=httpConnection.getHeaderFieldKey(i); "&~
0T# if(sHeader!=null) >u0w.3r# { 8' K0L(3[ if(sHeader.equals("Content-Length")) ceT&Y{T { M+`Hg_#Q nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (*\jbK break; BVw Wj-, } pV(lhDNoQ } ]3Dl)[R
else q
o 1lj"P break; 7@}$|u:JUF } fP HLXg5s } ;WU<CKYG* catch(IOException e){e.printStackTrace ();} CHJ>{b`O catch(Exception e){e.printStackTrace ();} awewYf$li j'0r' ,8MLoZ_ Utility.log(nFileLength); &o3K%M;C? ]i*](UQ %\$;(#h return nFileLength; Zm
ogM7B } p4K.NdUH m~hoE8C$ o>/O++7R a //保存下载信息(文件指针位置) 8>WVodv private void write_nPos() v%{.A) { f.B>&%JRZ try{ 7OCwG~_^ output = new DataOutputStream(new FileOutputStream(tmpFile)); 1xE]6he4{T output.writeInt(nStartPos.length); ]iNEw9 for(int i=0;i<nStartPos.length;i++) k
n[Y { k>jbcSY(z< // output.writeLong(nPos); 6$fYt&1 output.writeLong(fileSplitterFetch.nStartPos); eM7Bc4V output.writeLong(fileSplitterFetch.nEndPos); R9rj/Co } aVL=K output.close(); ^D`v3d } NcPgq?3p catch(IOException e){e.printStackTrace ();} !HeSOzN catch(Exception e){e.printStackTrace ();} ^ci3F<?Q= } Cxod[$8 E37<"(; *'Y@3vKE //读取保存的下载信息(文件指针位置) !+)AeDc:j private void read_nPos() sVk$x:k1M { bwM@/g%DL try{ h7*W*Bd DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ~_IHaw$hg int nCount = input.readInt(); p
Dx-2:} nStartPos = new long[nCount]; =0;}K@(J nEndPos = new long[nCount]; 'bld,Do6 for(int i=0;i<nStartPos.length;i++) :c9U>1`g& { n+lOb nStartPos = input.readLong(); iRg7*MQu nEndPos = input.readLong(); ^<e@uNGg } i
wxVl)QL input.close(); :ISMPe3' } T,xPSN2A* catch(IOException e){e.printStackTrace ();} \0lnxLA catch(Exception e){e.printStackTrace ();} t5)+&I2 } bY}eUL2i4 ae:zWk'! 7\*FEjRM] private void processErrorCode(int nErrorCode) )X9W y!w0 { %sHF-n5P System.err.println("Error Code : " + nErrorCode); X#3et' } &E xYXI OpM(j& WD Fjp //停止文件下载 (b'B%rFO public void siteStop() VJ ^dY; { 2I*;A5$N1 bStop = true; :qChMU|Y6 for(int i=0;i<nStartPos.length;i++) 8-y{a.,u. fileSplitterFetch.splitterStop(); !mWiYpbU+
,g%&|FAP '*\|;l#1 } Dfq(Iv } ^Y-]*8;] //负责部分文件的抓取 h?bb/T+' **FileSplitterFetch.java Ag F,aZU */ 8,0YD#x package NetFox; DW)2 m; P!"&%d U|g:`v7 import java.io.*; u%~igt@x import java.net.*; ]4;PR("aU >A@Y$. ,V*%V; public class FileSplitterFetch extends Thread { gJ2>(k03y sP^R/z|Y ;FZ@:%qDm String sURL; //File URL kOh{l: 2-+ long nStartPos; //File Snippet Start Position f>aRkTHf long nEndPos; //File Snippet End Position gY@N~'f;" int nThreadID; //Thread's ID wn)JXR boolean bDownOver = false; //Downing is over 6xD#? boolean bStop = false; //Stop identical 1Bpv"67 FileAccessI fileAccessI = null; //File Access interface Ur*6Gi6 =m5SK5vLKT IpP~Uz public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ?B:a|0pf { ;|UF)QGa2 this.sURL = sURL; 271&i this.nStartPos = nStart; I4&::y^C this.nEndPos = nEnd; 0{#8',*}m? nThreadID = id; LVJxn2x6 fileAccessI = new FileAccessI(sName,nStartPos);//定位 h,Q3oy\s1 } uL[.ND2._& PssMTEf 8P=o4lO+ public void run() {'U
Rz[g { sP ls
zC[ while(nStartPos < nEndPos && !bStop) =b/L?dR.- { rL}YLR RIIitgV_ \?je Wyo try{ ij? URL url = new URL(sURL); /{|fyKo\? HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); cq$i httpConnection.setRequestProperty("User-Agent","NetFox"); &gjF4~W] String sProperty = "bytes="+nStartPos+"-"; XP@1~$ httpConnection.setRequestProperty("RANGE",sProperty); )KP5WudX Utility.log(sProperty); P{u0ftyX} e[8LmuIZ 5|1T}Z#; InputStream input = httpConnection.getInputStream(); Ox@sI:CT //logResponseHead(httpConnection); ~q~MoN<R CxfRVL`7 U4cY_p? byte[] b = new byte[1024]; Q9Q|lO int nRead; A,`8#-AX while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) f"St&q>[s { O9r>E3-q nStartPos += fileAccessI.write(b,0,nRead); HQB(* //if(nThreadID == 1) 0X^Ke(/89 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); z(H^..<!5 } Ybn`3 pZeE61c/
?]x|Zy Utility.log("Thread " + nThreadID + " is over!"); K3=3~uY bDownOver = true; (<)]sp2 //nPos = fileAccessI.write (b,0,nRead); SXy=<%ed } /"B?1?qc,= catch(Exception e){e.printStackTrace ();} 0$-xw } 4 M(-xl? } k70|'* Kh [3@):8
$ mI0Bk //打印回应的头信息 CXC`sPY public void logResponseHead(HttpURLConnection con) &cu lbcz { 3Oi
nK[' for(int i=1;;i++) YiPoYlD*n< { 3:C oZ String header=con.getHeaderFieldKey(i); }6@pJG if(header!=null) nG;8:f` //responseHeaders.put(header,httpConnection.getHeaderField(header)); GxKqD;;u?= Utility.log(header+" : "+con.getHeaderField(header)); ;dzL}@we else }5(Ho$S( break; DrO2 y } EcCFbqS4W } /;utcc 67VT\f o5Q{/ public void splitterStop() +*hm-lv? { T16{_ bStop = true; :at$HCaK } R<=zCE `:
EMfdBY5 !H}vu]R } n2fbp\ I ZAXN6h ,.qMEMm /* yfC^x%d7G **FileAccess.java 1Q.\s_2 *//文件访问(定位,写) |\g5+fv9 package NetFox; L_K=g_] import java.io.*; |e2be1LD XQ~Ke-QW) ti<;7Yb
public class FileAccessI implements Serializable{ 1 %,a =,v S!sqbLrBn //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 &JtV'@>v RandomAccessFile oSavedFile; $O*O/iG long nPos; ;j)FnY=: - +fnK/%b QQV~?iW{~ public FileAccessI() throws IOException xQ'2BAEa { oI#a_/w this("",0); v= N!SaK{ } Q;D0<Bv Jzp#bgq}| u3o#{~E/# public FileAccessI(String sName,long nPos) throws IOException pm9%%M$ { [o<VVtB.Gk oSavedFile = new RandomAccessFile(sName,"rw"); D2,z)O%VK this.nPos = nPos; bHI<B)=` oSavedFile.seek(nPos); leQT-l2Bk } e~"fn*" %bdjBa} 4DOK4{4?5 public synchronized int write(byte[] b,int nStart,int nLen) M_%B|S
{ { m{7(PHpw int n = -1; r]0
lo- try{ jH6&q~# oSavedFile.write(b,nStart,nLen); DzheoA-+L' n = nLen; pm6>_Kz } D91e\|] catch(IOException e) oy;K_9\ { LvEnX S e.printStackTrace (); ykFJ%sw3X } po}F6m8bX C*G=cs\i xrN
&N_K# return n; i>joT><B } o^V(U~m] MG?0>^F g9Yz*Nee< } +nT'I!// <u=4*:QE 1=]kWp`i /* XJIv1s\g **SiteInfoBean.java Jx=hJ-FY */ W'on$mB5< package NetFox; 84{Q\c E{2Eoj;gq EutP\K_Y public class SiteInfoBean { 9Mgq1Z -uH#VP{0M XhPe]P private String sSiteURL; //Site's URL aceZ3U>W private String sFilePath; //Saved File's Path *;XWLd# private String sFileName; //Saved File's Name U-^[lWn[@4 private int nSplitter; //Count of Splited Downloading File )aX2jSp 8#&q$kE Gx
72 public SiteInfoBean() Q_vW3xz {//nSplitter的缺省值为5 @K:N,@yq //default value of nSplitter is 5 BJS-Jy$- this("","","",5); efY8M2 }
3!
~K^Z] [>|FB ' 2:LHy[{5 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) T{}fHfM { d
HJhFw sSiteURL= sURL; :ZDMNhUl
& sFilePath = sPath; !7d*v3)d sFileName = sName; hwqbi "o this.nSplitter = nSpiltter; Y+qQI MZ -!({BH-M_ 6yy;JQAke } dC<LDxlv "<i SZ )RsM!} public String getSSiteURL() jn.C|9/mj { LG]3hz9^9 return sSiteURL; rbZ[!LA } ?U7) XvQ -]:GL>b fj ,m public void setSSiteURL(String value) ai*b:Q { O3o: qly! sSiteURL = value; voe7l+Xk } m%#`y\]I `8\Ja$ = (.3'=n|kE public String getSFilePath() =xianQ<lK { jKIc09H| return sFilePath; e &9F\e } tD$lNh^ iK_c.b OJb*VtZz5R public void setSFilePath(String value) Ov82ibp_1 { 5f:DN\ ] sFilePath = value; K^t?gt@k} } sn{A wF% VK3it3FI>3 Wd(86idnc public String getSFileName() as"N=\N { )$x_!=@1 return sFileName; 'YSuQP> } !~-6wN"k Dmdy=&G <1~^C public void setSFileName(String value) `xKFqx:e { G.U5)4_^ sFileName = value; o'%eI } Ps R>V)L v@EQ^C2.& 2}t&iG|0/ public int getNSplitter() \.s`n2.w { HT`1E0G8) return nSplitter; 'i>xf
^ } 0&fl#]oCE mxqG-*ch- #%S0PL"x U public void setNSplitter(int nCount) Q* O<@ { `EMi0hm&H nSplitter = nCount; +3^NaY`Y } ^i_Iqph= } %"Db? G5'_a$ <`g3(? /* )fh0&Y; R **Utility.java F;D1F+S */ C9KWa*3 package NetFox; /r.6XZs6 z \?UGxu} ?~2Bi^W5 public class Utility { Q;26V4 Rrqg[F + m4/}Jx[ public Utility() :):zNn_>` { /)V4k:#b uu}-"/<~7 Jyu`-=It } (@]tG?I= <d@pmh //线程睡眠 C{Blqf3V0 public static void sleep(int nSecond) :)P<jX-G { |< N frz try{ 4MX7=!E Thread.sleep(nSecond); v["3 } ac6*v49 catch(Exception e) .[f;(WR { J E)J<9gf e.printStackTrace (); oCJbkt= } Fp:3#Bh } ?~)Ak`= my,x9UPs //日志 G?[-cNdk public static void log(String sMsg) P^(.tr3t { MFTC6L+T System.err.println(sMsg); C
ktX0 } WEVl9]b'e+ pbdF]>\ 6_ ]8\n public static void log(int sMsg) &"AQ;%&N { sV'v*
1| System.err.println(sMsg); <bX 1,}? } KW>VOW<. } 'bm:u AP
;*iyQ[ 6UI>GQ /* ;KS`,<^- **TestMethod.java 6EP~F8Kd */ xOM_R2Md package NetFox; x3;jWg~' _3U|2(E -eq=4N=s public class TestMethod { x-4J/tm H%~Q?4 iUCwKpb9 public TestMethod() (uT^Nn9L= { ///xx/weblogic60b2_win.exe 6puVw-X try{ r\bq[9dX> SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); [,nfAY //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); -3`Isv SiteFileFetch fileFetch = new SiteFileFetch(bean); _r7=&oL.Q fileFetch.start(); /KP_Vc:g2_ } @?vLAsp\ catch(Exception e){e.printStackTrace ();} ,W8au" !*8#jy 'XEK&Yi1 } #Wq#beBb -sx-7LKi excrXx public static void main(String[] args) `:R-[>5P8 { ^^'[%ok new TestMethod(); fX""xTNPi } -D;lS
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