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/* ~GjM:* **SiteFileFetch.java !%'c$U2 */ gal.<SVW package NetFox; $u{ 8wF/) import java.io.*; ^S^7u import java.net.*; !qJ|`o Y yV5AVMo L)_L#]Yy public class SiteFileFetch extends Thread { BoXGoFn Jek)`D @W!cC#u SiteInfoBean siteInfoBean = null; //文件信息Bean Ok_)C+o long[] nStartPos; //开始位置 #zKF/H|_R long[] nEndPos; //结束位置 -;U3$[T,J7 FileSplitterFetch[] fileSplitterFetch; //子线程对象 yQ+C}8r5 long nFileLength; //文件长度 lR3JyYY{X boolean bFirst = true; //是否第一次取文件 J,^e q@( boolean bStop = false; //停止标志 v,mn=Q&9 File tmpFile; //文件下载的临时信息 ?)XPY< DataOutputStream output; //输出到文件的输出流 ^BQ*l5K @Ke3kLQ_\X //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) k&3'[&$I*, public SiteFileFetch(SiteInfoBean bean) throws IOException ' q{|p+ { m>-(c=3 siteInfoBean = bean; oW8 hC //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 9h'klaE( tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); B#(2,j7M if(tmpFile.exists ()) mYqRN1% { qjd8Q bFirst = false; }P"JP[#E\ read_nPos(); df!n.&\y! } G1:2MPH else Qrt> vOUE7 { wvNddu>@ nStartPos = new long[bean.getNSplitter()]; GA@Zfcg nEndPos = new long[bean.getNSplitter()]; O$ ;:5zT } xZ(VvINL' 6IC/~Woghx x 0x/2re !_=3Dz } ]0)=0pc]E (Y?"L_pC [<7Vv_\Q public void run() )6Qk|gIu( { B$%7U><' //获得文件长度 6"U)d7^ //分割文件 )qx,>PL //实例FileSplitterFetch w(vda0 //启动FileSplitterFetch线程 GHo=)NTjy //等待子线程返回 t /CE,DQ try{ cdfvc0 if(bFirst) KRh95B GU { IBr|A nFileLength = getFileSize(); zq&,KZ if(nFileLength == -1) [vY? ! { x'wT%/hp System.err.println("File Length is not known!"); 3re|=_
Hy } ZCS{D else if(nFileLength == -2) '1yy&QUZq { (@1*-4l System.err.println("File is not access!"); j{u!/FD } 1?bX$$yl; else : $>TeCm {
Rw\S-z/ for(int i=0;i<nStartPos.length;i++) M/mUY { :]oR x nStartPos = (long)(i*(nFileLength/nStartPos.length)); @q]{s+#Xf } 2u|}gZts for(int i=0;i<nEndPos.length-1;i++) GwaU7[6 { y!?l;xMS nEndPos = nStartPos[i+1]; h_:|H8t;w } 1V37%
D nEndPos[nEndPos.length-1] = nFileLength; &r
Lg/UEV- } $zuemjW3p } ?Em*yc@WD GP\Pk/E -w:F8k ~ //启动子线程 7J@D})si fileSplitterFetch = new FileSplitterFetch[nStartPos.length];
=+j>?Yi for(int i=0;i<nStartPos.length;i++) *PjW, { Q1?G7g]N fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), .OC{,f+ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^#VyI F3q nStartPos,nEndPos,i); gr")Jw7 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }$ZcC_ fileSplitterFetch.start(); r&t)%R@q } =?/RaK/
w // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *n=NBkq%/! siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9V=bV=4: // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", j7)Xm,wI8 nEndPos = " + nFileLength); 2So7fZa^wg // fileSplitterFetch[nPos.length-1].start(); U ExK|t yEe4{j$ UldG0+1d //等待子线程结束 d8? }69:h //int count = 0; 1wpeYn7>W //是否结束while循环 OyG$ ]C boolean breakWhile = false; 007SA6xq HV??B : )MKzAAt~ while(!bStop) ;hOrLy&O { \=yx~c_$L write_nPos(); \HB4ikl Utility.sleep(500); 1cyX9X breakWhile = true; /M-%]sayj Jy x6{Oj / ` 7p'i for(int i=0;i<nStartPos.length;i++) ;@@1$mzK { yH8
N 8 if(!fileSplitterFetch.bDownOver) : qKxm( { +Zx+DW cq breakWhile = false; z6K"}C% break; qd B@P } E:N~c'k } _tg&_P+kV if(breakWhile) Gv!*
Qk4 break; ~$N%UQn?b# /
W}Za&] 0.+"K} //count++; Z%Nl<i //if(count>4) mACj>0Z' // siteStop(); uhFj|r$$ } szC~?]<YY N.|Zh+! @L8('8~d System.err.println("文件下载结束!"); #L{QnV.3 } OgNt"Vg catch(Exception e){e.printStackTrace ();} PF-7AIxs" } 4425,AR i51~/
R .Z}ySd:X //获得文件长度 \k1psqw^O public long getFileSize() J(0.eD91v { h$p]#]uMb int nFileLength = -1; Nw}y_Qf{ try{ !aD/I%X URL url = new URL(siteInfoBean.getSSiteURL()); Zi=Nr3b HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); TE4{W4I httpConnection.setRequestProperty("User-Agent","NetFox"); <a |$Bl Ctxs]S tU% Yw=Ve 0 int responseCode=httpConnection.getResponseCode(); #5kQn>R if(responseCode>=400) |2\6X's { <@}~Fp@ processErrorCode(responseCode); *]fBd<(8 return -2; //-2 represent access is error d*=P8QwL| } \+E{8&TH' bIP{DxKS \FSkI0 String sHeader; euS"C* h5&l#>8& NamBJ\2E1[ for(int i=1;;i++) &inu mc { q28i9$Yqj\ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); %_wX9ZT //Utility.log(in.readLine()); lkK+Fm sHeader=httpConnection.getHeaderFieldKey(i); @X_x?N if(sHeader!=null) 2*-s3 >VK { T^8t<S@` if(sHeader.equals("Content-Length")) iK6L\'k { nsqs*$ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); N.C<Mo break; f0fN1 } 'H2TwSbIXI } iIq='xwa9 else bR@ e6.<i break; .Y!*6I } zg&<HJO } _|xO4{X catch(IOException e){e.printStackTrace ();} "P=OpFV catch(Exception e){e.printStackTrace ();} +?n81|7` 1vBR\!d?7 l;:
L0((' Utility.log(nFileLength); 'D8WNZ8Q w1/pwzn U7.3`qd" return nFileLength; ~]DGf( } V<AT"vU[ [y|"iSD DPJ#Y -0 //保存下载信息(文件指针位置) M"2Tuwz private void write_nPos() s)#FqB8 { &IM;Yl try{ *D1^Se output = new DataOutputStream(new FileOutputStream(tmpFile)); mc;Z#"kf output.writeInt(nStartPos.length); -
*!R for(int i=0;i<nStartPos.length;i++) Tm5]M$) { 9D:p~_"g // output.writeLong(nPos); }<o.VY&;. output.writeLong(fileSplitterFetch.nStartPos); jpZ, $ output.writeLong(fileSplitterFetch.nEndPos); ;sCf2TD,_ } \5 IB/* output.close(); Y"~I(,nx! } )y(pd catch(IOException e){e.printStackTrace ();} zlZ$t{[, catch(Exception e){e.printStackTrace ();} 40N8?kQ}? } 5BCXI8Ox9x EAU6z(X$ yf+M //读取保存的下载信息(文件指针位置) [f}YXQ0N) private void read_nPos() mOr>*uR { W~E%Eq3 try{ VS<E?JnbFV DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); i
~fkjn int nCount = input.readInt(); Z 9mY*}:U~ nStartPos = new long[nCount]; 6wx;grt'Z nEndPos = new long[nCount]; k/YEUC5 for(int i=0;i<nStartPos.length;i++) T>s~bIzL*e { :l8n)O3 nStartPos = input.readLong(); D ::),, nEndPos = input.readLong(); -! Hn,93 } L6Ykv/V input.close(); HDZB)'I } abkl)X>k catch(IOException e){e.printStackTrace ();} W"+*%x catch(Exception e){e.printStackTrace ();} _eM\ /(v[ } vFLQq,?Nh blNJ )#zc$D^U private void processErrorCode(int nErrorCode) ~~k_A|& { rvuskXdo System.err.println("Error Code : " + nErrorCode); MZ
o\1tU-i } z=B*s!G Mfe/(tlI Ehu^_HZ //停止文件下载 `q7O\ public void siteStop() m8;;
O { f4)fa yAVp bStop = true; v{
Md4p for(int i=0;i<nStartPos.length;i++) Tz3 L#0:j fileSplitterFetch.splitterStop(); 9 o6ig>C w~hO)1c],: B}8xA}< }
fy" q } 6/Y3#d //负责部分文件的抓取 TJ8IYo|
D **FileSplitterFetch.java @9g$+_"ZT */ St9W{ package NetFox; p9Zi}!
=#dW^?p ;75K:_ import java.io.*; o<bZ. t import java.net.*; /"?yB$s E}Q'Wz|k m(SGE,("w public class FileSplitterFetch extends Thread { p/L|;c ?U.+SQ mH2XwA| String sURL; //File URL Tt#4dm- long nStartPos; //File Snippet Start Position 0>Iy`>] long nEndPos; //File Snippet End Position FIhq>L.q4 int nThreadID; //Thread's ID t?f2*N: boolean bDownOver = false; //Downing is over fVx<f.xuW boolean bStop = false; //Stop identical o^FlQy\ FileAccessI fileAccessI = null; //File Access interface :UM>`Y ~kPHf_B;z ] W39HL public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException :,%~R2 { $(B|$e^:( this.sURL = sURL; xX$'u"dsA this.nStartPos = nStart; >Q#h,x~vu this.nEndPos = nEnd; T#kPn#| nThreadID = id; 0w9)#e+JS fileAccessI = new FileAccessI(sName,nStartPos);//定位 tIfA]pE } 3*x_S"h AL@8v= QG
{KEj2V public void run() \Fg%V> { 69ZGdN while(nStartPos < nEndPos && !bStop) q ww* { #v+2W KGb:NQ=O6i fNe9as try{ ))m\d * URL url = new URL(sURL); RQhS]y@e HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =p~k5k4 httpConnection.setRequestProperty("User-Agent","NetFox"); tb36c<U- String sProperty = "bytes="+nStartPos+"-"; \6AYx[| httpConnection.setRequestProperty("RANGE",sProperty); hB/4.K ]8 Utility.log(sProperty); a!rU+hiC __N<
B5E VbX+`CwH InputStream input = httpConnection.getInputStream(); 2GeJ\1k //logResponseHead(httpConnection); art
L LkYcAY$w |j:"n3~6 byte[] b = new byte[1024]; }2c)UQD8 int nRead; WjLy7& while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) :"QR;O@ { yu3: Hv} nStartPos += fileAccessI.write(b,0,nRead); *|WS, //if(nThreadID == 1) \Gm$hTvB& // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ok63 w7 } 'w//d
$+G_ xVYy`_| fNR2(8;} Utility.log("Thread " + nThreadID + " is over!"); q,S[[{(" bDownOver = true; ZcJa: //nPos = fileAccessI.write (b,0,nRead); G*;?&;* } wJc~AP)I%z catch(Exception e){e.printStackTrace ();} CVUA7eG+ } *Rm"3S } ws}cMX]* Xa o*h(Q@L ,',
S //打印回应的头信息 {3,_i66 public void logResponseHead(HttpURLConnection con) u}_,4J
{ lGoP(ki for(int i=1;;i++) TOF_m$@# { 4mHR+SZy String header=con.getHeaderFieldKey(i); s'$5]9$S if(header!=null) ` mvPbZ0< //responseHeaders.put(header,httpConnection.getHeaderField(header)); K|^PHe Utility.log(header+" : "+con.getHeaderField(header)); 80J87\) else _A]8l52pt break; }-` N^ } 1,Ams } v=m!$~ s"OP[YEke/ 9mA6nmp public void splitterStop() HrOq>CSR { i28WgDG)5 bStop = true; `G/%U~ } aMv?D(Meb
2fqg,_ {L6@d1u } b0VEMu81k Q[PVkZ ht>C 6y /* |:7
^ **FileAccess.java {"v~1W) *//文件访问(定位,写) +"mS< package NetFox; l<3X:) import java.io.*; )NF5,eD %_P[
C}4 yP<ngi^s= public class FileAccessI implements Serializable{ ujin+;1 /$[9-G? //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 [|qV*3|? RandomAccessFile oSavedFile; ;-0
d 2Z long nPos; p]jkfsCjN Ow"e3]}Mt }>93X0%r public FileAccessI() throws IOException 4 H<. { R!)3{cjU@ this("",0); T 6ihEb$C } ^Uq%-a mV>l`&K= we("#s1= public FileAccessI(String sName,long nPos) throws IOException {{:QtkN { 9-/u _$ oSavedFile = new RandomAccessFile(sName,"rw"); s78MXS?py this.nPos = nPos; /]1$Soo oSavedFile.seek(nPos); ^5'pJ/BV } EjA3hHJ uqotVil, nsA}A~(E public synchronized int write(byte[] b,int nStart,int nLen) jT'09r3P { AONEUSxJ int n = -1; a Fh9B\n try{ !{1;wC(b oSavedFile.write(b,nStart,nLen); olv0w;s n = nLen; @k-C>h()C } 2RbK##`vC catch(IOException e)
WrHY' { L*6R5i> e.printStackTrace (); WEaG/)y } 1fH2obI~X 8@ZZ[9kt ?W 6
:$ return n; Qx")D?u } 79*f <Gr 9 _oAs"w A+=K<e } {1eW*9 P#!^9)3 |NdWx1 /* Q]{ `m **SiteInfoBean.java i7XM7+} */ H/2dVUU package NetFox; | LXVf ]?7q%7-e.a NNxzZ!q! public class SiteInfoBean { <GWzdj? n\i~H pi|=3W private String sSiteURL; //Site's URL ^`S.Mw. private String sFilePath; //Saved File's Path S[;d\Z]~ private String sFileName; //Saved File's Name }`pxs private int nSplitter; //Count of Splited Downloading File oh0*b h -Hh.8(!XoO p:NIRs public SiteInfoBean() GYt|[GC {//nSplitter的缺省值为5 )61X,z //default value of nSplitter is 5 / q| o this("","","",5); h'nXV{N0 } 8B`w!@hf Fhrj$ ,p>@:C/M public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 0z$::p$%u { i+Lqj sSiteURL= sURL; `m`Y3I sFilePath = sPath; %M*2 j%6 sFileName = sName; G,}"}v: this.nSplitter = nSpiltter; Y 8n*o3jM 9i46u20 Z8ds`KZM } x~JOg57up F.{$HJ +>ld public String getSSiteURL() {%oxzdPc { DJZ$M return sSiteURL; sOO_J!bblP } Aw]kQ\P& ny"z<N&}/ MwC} public void setSSiteURL(String value) K|Xr~\= { | Rj"}SC sSiteURL = value; )A$xt)}P!{ } \ZtKaEXnx gW-mXb /PKu",Azj public String getSFilePath() LC4W?']/ { Bm5\*Xd1( return sFilePath; feJl[3@tO } !'#GdRstv @\WeI"^F8 %i.Prckrb public void setSFilePath(String value) fZp3g%u { |s,y/svp sFilePath = value; K: |-s4= } X4<Y5?&0 {TZV^gT4 DB+oCE<.# public String getSFileName() bao"iv~z { FeNNzV= return sFileName; w$Z%RF'p } "vX\Q rL 8+ ]'2{ vSy[lB|)24 public void setSFileName(String value) :Y|[?; { r&+w)U~ sFileName = value; c,:nWf } p^1~o/ S%jW}v'; X"sJiF S public int getNSplitter() H*P[tyz$ { {DapXx return nSplitter; },@ex } nkzH}F=< Qff.QI, Yd(<;JKF[ public void setNSplitter(int nCount) CQPq5/@Y4 { XE]"RD<z nSplitter = nCount; \&l@rMD3s } B3<sSe8L0 } ~e&O?X 4peRbm /Pxny3 /* xE{slDl **Utility.java D/afa8>LQH */ eM@xs<BR package NetFox; {:|b,ep
T tXuf ! .Q^V,[on1T public class Utility { fRT4>So mL-6+pJ@ oQA,57B public Utility() Q/q>mN"#1 { ExM VGe .K]Uk/W >?#zPweA } l&*=
.Zc7! Dr76+9'i //线程睡眠 JLt%G^W> public static void sleep(int nSecond) ^X?uAX-RP| { "lrQC`? try{ l"7#(a Thread.sleep(nSecond); U~d%5?q } 'Z]wh .]T catch(Exception e) NTEN { rHi4Pw{L e.printStackTrace (); `(ik2#B`} } T2n3g|4 } S>)[n]f %WC^aKfY //日志 "%b Gwv public static void log(String sMsg) 2m"cK^ { pSI8"GwQ System.err.println(sMsg); (AX$Svw } ?bpVdm! -:kIIK
J"Fp), public static void log(int sMsg) 7#c4.9b? { N}1yDN System.err.println(sMsg); .
:>e"D } #WJ*)$A@& } 1{wbC) 8.>himL
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f /* \ @[Q3.VX **TestMethod.java |fW_9={1kQ */ kv6nVlI)B package NetFox; .wmqaLd% &YcOmI/MM
N:okt)q:% public class TestMethod { cRuN; zWv0y8[d yn"4qC#Z public TestMethod() J .VZD { ///xx/weblogic60b2_win.exe O;5lF try{ ?;H}5>^8P SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); x7Gf):,LK //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ktS^^!,l% SiteFileFetch fileFetch = new SiteFileFetch(bean); L|}s Z\2! fileFetch.start(); [[w | } nM Z)x- catch(Exception e){e.printStackTrace ();} $:\`E56\ 5KDCmw oH!O{pQK} } ,QpFVlPU gWoUE7.3` ~
rQ,%dH public static void main(String[] args) ?Pa(e)8\ { Y9>92#aME new TestMethod(); 'n
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