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/* nms8@[4- **SiteFileFetch.java mI1H! */ p*3; hGp6 package NetFox; Sv[ 5NZn0& import java.io.*; &(pjqV import java.net.*; KLWDo%%u BOVPKX Gu0 ,)jy\ public class SiteFileFetch extends Thread { #
TkR QO;4}rq 'Prxocxq SiteInfoBean siteInfoBean = null; //文件信息Bean Ri*3ySyb long[] nStartPos; //开始位置 2[yBD-": long[] nEndPos; //结束位置 5]Ajf;W\ FileSplitterFetch[] fileSplitterFetch; //子线程对象 }FqA ppr long nFileLength; //文件长度 r?$?;%|C boolean bFirst = true; //是否第一次取文件 ))h6~1` boolean bStop = false; //停止标志 dFXc/VH') File tmpFile; //文件下载的临时信息 W7No ls{ DataOutputStream output; //输出到文件的输出流 ki]ti={12 k ]a*&me //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 9)dfL?x8V{ public SiteFileFetch(SiteInfoBean bean) throws IOException $%k1fa C { $4=f+ "z siteInfoBean = bean; AONDx3[
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 2'0K WYM tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); uKr1Z2 if(tmpFile.exists ()) |AZW9 { mh/n.*E7 bFirst = false; R!\EKH read_nPos(); .p`
pG3 } u'~;Y.@i' else 9"{W,'r&d { j7QX,_Q nStartPos = new long[bean.getNSplitter()]; `TLzVB-j3 nEndPos = new long[bean.getNSplitter()]; {tP%epQ } +K",^6%1 /+K? ^C)n$L>C0 '-$XX%TOAc } g=@_Z" >pL2*O^{9 !RvRGRSyF public void run() lEjwgk { { Pt,ebL~ //获得文件长度 CB\{! //分割文件 sN=6 gCau //实例FileSplitterFetch jH;Du2w //启动FileSplitterFetch线程 `6=-WEo //等待子线程返回 &]6)LFm try{ gxNL_(A if(bFirst) <=K qcHb { gk0.zz([ nFileLength = getFileSize(); 6aft$A}XnD if(nFileLength == -1) _o3e]{ { nSx8E7 |V System.err.println("File Length is not known!"); (t^n'V } ~EiH-z4U else if(nFileLength == -2) PyC0Q\$% { (?)7)5H System.err.println("File is not access!"); \;5\9B"i } U\@A_
B else I&yVx8aH} { Wzq>JNny for(int i=0;i<nStartPos.length;i++) -Yi,_#3{ { )Q;978: nStartPos = (long)(i*(nFileLength/nStartPos.length)); M)-6T{[IT } {2d_"lHBt for(int i=0;i<nEndPos.length-1;i++) $RX'(/ { Sb2v_o nEndPos = nStartPos[i+1]; +xv!$gJEj } @exey nEndPos[nEndPos.length-1] = nFileLength; oih5B<&f# } {^)70Vz>PE } Pn.bVV: TA18 gq AEirj / //启动子线程 "d/s5sP|S fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; '_s}o< for(int i=0;i<nStartPos.length;i++) {Bvj"mL]j { ,Z9>h[JF fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), iOw3MfO siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), *hhmTc# nStartPos,nEndPos,i); /hW d/H] Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !\ND( fileSplitterFetch.start(); V)M1YZV{ } ]:]H:U]p // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +]xFoH
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); )P&9A)8 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", y8Xv~4qQW nEndPos = " + nFileLength); 5i6
hp;= // fileSplitterFetch[nPos.length-1].start(); >T3H qYX5W &Nl2sey M6|I6M< //等待子线程结束 5E\#%K[ //int count = 0; FVsj; //是否结束while循环 >>Ar$ boolean breakWhile = false; b}9[s 0*%&> le)DgIT>= while(!bStop) y7\"[<E`(V { Fqq6^um write_nPos(); n^(A=G Utility.sleep(500); km5~Gc} breakWhile = true; qNgd33u1 %y[1H5)3< A?!I/|E^; for(int i=0;i<nStartPos.length;i++) WKM)*@#, { "@3@/I if(!fileSplitterFetch.bDownOver) .9G<y 4 { 4R%*Z~ breakWhile = false; \YJy#2K break; t q50fq' } l;X|=eu' } ?9MVM~$ if(breakWhile) Ds8
EMtS break; sRHA."A!8 'XOX@UH d 8iQ[9 //count++; mABe'"8 //if(count>4) _W!p8cB // siteStop(); \uOdALZ } h[tix: `s#Hq\C m`?MV\^ System.err.println("文件下载结束!"); A~(l{g } 2(!fg4#+ catch(Exception e){e.printStackTrace ();} zdun,`6 } 3:/'n 9%)=`W y %8op:' //获得文件长度 H5>hx{ public long getFileSize() 9.O8/0w7LV { k,Qskd-N] int nFileLength = -1; M[5[N{ try{ ks;%*d URL url = new URL(siteInfoBean.getSSiteURL()); +#J,BKul HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); \$*$='6" httpConnection.setRequestProperty("User-Agent","NetFox"); &O\(;mFc Kr`]_m +V862R4,o int responseCode=httpConnection.getResponseCode(); D<{{ :7n if(responseCode>=400) !G5a*8] { ~|Y>:M+0Z processErrorCode(responseCode); &:B<Q$g# return -2; //-2 represent access is error .y5,x\Pq( } ._:nw=Y0<} g&/p*c_ 6&U+6gb String sHeader; ZUXr!v/R:1 #%3rTU =4!nFi for(int i=1;;i++) "O>n@Q| { 7EhN u@5- //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); N)8HR9[! //Utility.log(in.readLine()); cp
Ear sHeader=httpConnection.getHeaderFieldKey(i); qAkx<u if(sHeader!=null) xvLn'8H. { N6QVt f. if(sHeader.equals("Content-Length")) wmr-}Y!9u% { 4b]a&_-} nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); %~|HFYd break; `'_m\uo } SU _SU". } BZK`O/ else 4pz|1Hw7 break; -_VG;$,jE } }f>H\iJe } #b0{#^S: catch(IOException e){e.printStackTrace ();} 8t"~Om5sG catch(Exception e){e.printStackTrace ();} lt'I,Xt Eu<1Bse; Mq%,lJA\ Utility.log(nFileLength); #Sg\q8(O L?&'xzt B s$h]
G[x return nFileLength; `:{B(+6 } p^m5`{1]x 0Sl]!PZR1 u<ySd? //保存下载信息(文件指针位置) 3+7^uR$/I4 private void write_nPos() w]j+9-._ { 1{"llD try{ CENVp"C/` output = new DataOutputStream(new FileOutputStream(tmpFile)); lVH<lp_ZtK output.writeInt(nStartPos.length); cX!Pz.C for(int i=0;i<nStartPos.length;i++) or ;f&![w { ~rbIMF4T`] // output.writeLong(nPos); 7[v%GoE output.writeLong(fileSplitterFetch.nStartPos); bJr[I output.writeLong(fileSplitterFetch.nEndPos);
ug 7o>PX } 1MkI0OZE
output.close(); `xS{0P{uj } t-%Q`V=[ catch(IOException e){e.printStackTrace ();} $9
p!Y} catch(Exception e){e.printStackTrace ();} &(rWw Oo6 } {0\,0*^p Y o0FUj =(AtfW^H //读取保存的下载信息(文件指针位置) n_K~vD private void read_nPos() T>>YNaUL { \J^ try{ 2+8#H. DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); FeJr\|FT int nCount = input.readInt(); tY W>t9 nStartPos = new long[nCount]; d~tuk4F nEndPos = new long[nCount]; FXKF\1`(H for(int i=0;i<nStartPos.length;i++) "HMP$)d { nCg66-3A nStartPos = input.readLong(); EEy$w1ec nEndPos = input.readLong(); d4[(8}
x$/ } 01a-{&
input.close(); u8b2$D } !,$i6gm catch(IOException e){e.printStackTrace ();} 1nj(hg catch(Exception e){e.printStackTrace ();} qf'm=efRyu } uw\1b.r'B {WN(&eax [ANuBNF private void processErrorCode(int nErrorCode) w6|9|f/ { 6x{<e4<n System.err.println("Error Code : " + nErrorCode); K5Wg"^AHY/ } I lR\
# u }hF8eD ,M !tm7 //停止文件下载 G*
%t'jX9 public void siteStop() wl=61Mb { tEd.'D8 s bStop = true; sf}Dh for(int i=0;i<nStartPos.length;i++) %u{W7 fileSplitterFetch.splitterStop(); JD>d\z2QC igf)Hb;5 Ha>*?`?yI } $Byj}^ ;1 } iSRpfU //负责部分文件的抓取 &tR(n$M@> **FileSplitterFetch.java EfLO5$?rm */ td2/9|Q package NetFox; @=S}=cl R u?ek|%Ok import java.io.*;
8Chj
w wB import java.net.*; !4@G3Ae22 4fV3Ear=j KP;(Q+qTx public class FileSplitterFetch extends Thread { Huw\&E }'"Gr%jf( PrQ?PvA<L String sURL; //File URL vEM(bT=H long nStartPos; //File Snippet Start Position [a[/_Sf{ long nEndPos; //File Snippet End Position D:\ g,\Z int nThreadID; //Thread's ID t5k!W7C boolean bDownOver = false; //Downing is over %3;Fgk y boolean bStop = false; //Stop identical !4"sX+z9 FileAccessI fileAccessI = null; //File Access interface 5@Bu99` ]36sZ
* ;.sl*q1A public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException t,)N('m}= { ^he=)rBb? this.sURL = sURL; >M!xiQX this.nStartPos = nStart; _GQz!YA this.nEndPos = nEnd; dGfVZDsr] nThreadID = id; gxPx&Z6jF fileAccessI = new FileAccessI(sName,nStartPos);//定位 Q\
^[!| } UCrh/b Tm 3CjL\pIC 7)rWw<mY public void run() l7(!`NPbC { gJt`?8t while(nStartPos < nEndPos && !bStop) 6~:Sgt nU { jdeV|H} u }G46g#_6d> stl 1QO(h try{ c47")2/yO URL url = new URL(sURL); `pZs T
^G[ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); %wV>0gQTf httpConnection.setRequestProperty("User-Agent","NetFox"); ExSe=4q# String sProperty = "bytes="+nStartPos+"-"; G}@#u9 httpConnection.setRequestProperty("RANGE",sProperty); j Ib Utility.log(sProperty); cR-~)UyrO #BK 9 k>i y]..=z_ql InputStream input = httpConnection.getInputStream(); >C WKH~ //logResponseHead(httpConnection); 5(2|tJw-H; lor8@Qz 3LR p2(A byte[] b = new byte[1024]; ~d{.ng 4K int nRead; ( fD
;g9 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 'J*<iA*W { BIaDY<j90 nStartPos += fileAccessI.write(b,0,nRead); ln*icaDqf //if(nThreadID == 1) ~sQjl] // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ?zJpD8e } fqz28aHh C`rLj5E% Oh.ZPG= Utility.log("Thread " + nThreadID + " is over!"); *x~xWg9^ bDownOver = true; 1RLY $M //nPos = fileAccessI.write (b,0,nRead); #yseiVm; } (LvS
:?T} catch(Exception e){e.printStackTrace ();} iVtl72O } 2s*#u<I } ~pk(L[G }y%`)lz~ ; :H6FPV78 //打印回应的头信息 HC {XX>F^ public void logResponseHead(HttpURLConnection con) +^aFs S { "Y`3DxXz for(int i=1;;i++) B(k=oXDF { wmNHT _ String header=con.getHeaderFieldKey(i); Yw3oJf& if(header!=null) wo2@hav //responseHeaders.put(header,httpConnection.getHeaderField(header)); `i,_aFB| Utility.log(header+" : "+con.getHeaderField(header)); )|j[uh6wo else v4Zb?
Yb break; }g+;y } :qhpL-ER } @ufo$?D [@<sFP;g >$67 7 public void splitterStop() DVZdClAL { >!e<}84b bStop = true; c97{Pu } uaw~r2 ?[TfpAtQ` dCYCHHHF } Zt
-1h{7 + Y.1)i} h[KvhbD3 /* 7T``-:`[ **FileAccess.java @r(Z%j7 *//文件访问(定位,写) 3:/'t{ ^B package NetFox; xVB;s.'! import java.io.*; 3FSqd<t;D #mR4fst S 6,4PP public class FileAccessI implements Serializable{ HysS_/t~ Z#d&|5Xj //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ?rVy2! RandomAccessFile oSavedFile; eO=s-]mk long nPos; h+.{2^x =rA~7+} /gcEw!JS public FileAccessI() throws IOException a/Q$cOs { qL$a
c}` this("",0); ?,P3)&3g } <Tw>|cFT })xp%<` p=GWq(S6 public FileAccessI(String sName,long nPos) throws IOException TQX)?^Ft { v dbO( oSavedFile = new RandomAccessFile(sName,"rw"); a?}
.Fs this.nPos = nPos; zIC;7 5# oSavedFile.seek(nPos); E9\vA*a } '# NcZy B0$:b! _CBWb public synchronized int write(byte[] b,int nStart,int nLen) `=+^|Y} { ]=rht9)," int n = -1; hDP/JN8y try{ d4:`@* oSavedFile.write(b,nStart,nLen); CQ7{1,?2 n = nLen; qs\2Z@; } 9Gy catch(IOException e) +:=(#Y { (YBMsh e.printStackTrace (); ( m\$hX } C`=p+2I] r;9 r!$d 7*Qk`*Ii return n; y4Z&@,_{ } $CTSnlPq *b *G2f^ 682Z}"I0 } eg<bi@C1| m p<1yY] &wd;EGGT!q /* "q}FPJ^l_N **SiteInfoBean.java bawJ$_O_ */ "xcX'F^ package NetFox;
N#V.1<Y m^' uipa\ lN,/3\B public class SiteInfoBean { H|ozDA Y^Nuz/ ]3ONFa private String sSiteURL; //Site's URL r`&-9"+ private String sFilePath; //Saved File's Path ?1L.:CS private String sFileName; //Saved File's Name [=O/1T private int nSplitter; //Count of Splited Downloading File rn DCqv!'P HCK|~k n%h^o public SiteInfoBean() V$0dtvGvH {//nSplitter的缺省值为5 I`[i;U{CK //default value of nSplitter is 5 i|
\6JpNA: this("","","",5); o:Qv
JcB } Qjx?ri// s?8<50s 9[!,c`pw public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) u&G.4QQF { (>J4^``x= sSiteURL= sURL; $VAx:Y| sFilePath = sPath; 6s,uXn sFileName = sName; ^@P1
JNe this.nSplitter = nSpiltter; I8oo~2Qw a`Gx=8 8eA+d5k\. } Vz14j_ %1pYEHn "~UUx"Y public String getSSiteURL() -(#I3h;I { EM>}0V return sSiteURL; %h1N3\y9i( } yx V:!gl
IUR<.Y` t+oJV+@ public void setSSiteURL(String value) &`b
"a! { d0'JC* sSiteURL = value; "5cM54Z0 } k6`6Mjbc L
lqM c (F7(^.MG public String getSFilePath() b~dIk5>O { yH][(o=2 return sFilePath; 9nu3+.&P } J0zn- +C7 ~b~ % NM)k/?fA public void setSFilePath(String value) **69rN { {M,,npl sFilePath = value; ^Rm } (&$VxuJ+6y !lo/xQ< }b 1cLchl public String getSFileName() CJ}5T]WZ { :JlP[I
return sFileName; 6TP7b| } 4Llo`K4 lKk/p^: d[rv1s>i public void setSFileName(String value) a >\vUv* { Ym;*Y !~[ sFileName = value; cqxVAzb } UH7jP#W%= 8[6o ( y
qtKy public int getNSplitter() Jk,;JQ { = k\J< return nSplitter; :qC'$dO! } r1RG TEkD +{sqcr1G s/089jlc public void setNSplitter(int nCount) hY`\&@ { \h8 <cTQ nSplitter = nCount; Z"unF9`"1 } g^zs,4pPU< } fhB}9i^]tg {v3P9s( yDNOt C| /* HSq}7S&U **Utility.java A 7[:5$ */ Cu6%h>@K$ package NetFox; $1SUU F\. TX SwZA6R& public class Utility { e{Z &d
{k rswh3 ;#Q%j%J public Utility() 3_A
*$ { hMtf.3S7c s+>:,U<A arf8xqR-U] } +^;JS3p@\ <$JaWL //线程睡眠 s(W|f|R public static void sleep(int nSecond) +{/ { >M&3Y
XC try{ ](|\whI Thread.sleep(nSecond); ID/F } HV<Lf
6gE catch(Exception e) 1'?4m0W1 { R:B^ e.printStackTrace (); _UuC,Pl3 } `-LGU7~+ } (Cqn6dWK :%IoM E //日志 irjP>3_e public static void log(String sMsg) m# =z7.XrX { $ `7^+8vHV System.err.println(sMsg); 7 [0L9\xm } sJNFFOz $ MC)}l 5atYOep public static void log(int sMsg) )p*}e8L { .1LCXW= System.err.println(sMsg); $8BPlqBIZ } i~r l o^ } z;y:9l 3po:xMY |fo0 /* 5eWwgA **TestMethod.java }l=xiAF */ XC+A_"w) package NetFox; S{3nM< JfPD}w G}p\8Q}' public class TestMethod { 'F3)9&M Z@r.pRr'
6^DR0sO public TestMethod() m4*@o?Ow { ///xx/weblogic60b2_win.exe G z)NwD try{ f7}*X|_Y SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Dl}$pN //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); a0Zv p>Ft SiteFileFetch fileFetch = new SiteFileFetch(bean); [+P#tIL fileFetch.start(); jVq(?Gc } o6p98Dpg catch(Exception e){e.printStackTrace ();} PdvqDa8 4f<$4d^md Q%f|~Kl-hd } < |