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/* cl)%qIXj}H **SiteFileFetch.java x>7}>Y*( */ #*XuU8q? package NetFox; R8?Xz5 import java.io.*; KGFmC[ import java.net.*; %E,s*=j xLX:>64'o> 67%o83\ public class SiteFileFetch extends Thread { T ^%$ PG+ICg _L<IxOZh+ SiteInfoBean siteInfoBean = null; //文件信息Bean NqVe{+1x long[] nStartPos; //开始位置 9^x'x@6 long[] nEndPos; //结束位置 /5EM;Mx FileSplitterFetch[] fileSplitterFetch; //子线程对象 ESL(Mf' long nFileLength; //文件长度
ze{ boolean bFirst = true; //是否第一次取文件 ;WWUxrWif boolean bStop = false; //停止标志 ku&IVr% File tmpFile; //文件下载的临时信息 gfR B DataOutputStream output; //输出到文件的输出流 2y`rS
_2 ok iI: //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) *&^`Uk,[ public SiteFileFetch(SiteInfoBean bean) throws IOException ?1JS*LQ$ { ^ dM,K
p siteInfoBean = bean; a}c .]zm] //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); |Rf4^vN tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); %nSLe~b if(tmpFile.exists ()) oEGe y8? { z|x0s0q? bFirst = false; C{H:-"\J9 read_nPos(); p;,Cvw{.;% } c!d>6:\ else Z^zUb { nB[Aw7^|A nStartPos = new long[bean.getNSplitter()]; b%z4u0 nEndPos = new long[bean.getNSplitter()]; tg_v\n } 0B7cpw>_J }'U"HHv FZ)_WaqGf MdV-;uf } .v?Ir) Y_ b;1RN 7^>UUdk( public void run() &-mPj82R { {9S=: //获得文件长度 f|P% //分割文件 6p|*H?|It //实例FileSplitterFetch qq9fZZb //启动FileSplitterFetch线程 8+5z -vd //等待子线程返回 -rb]<FrL^ try{ v1*Lf/ if(bFirst) ?nZQTO7 { !$ItBn/_ nFileLength = getFileSize(); bL v_<\:m if(nFileLength == -1) =B-a]?lM { ]k
&Y ) System.err.println("File Length is not known!"); 5Arx"=c } +n_`*@SE else if(nFileLength == -2) *.nC'$-2r { lv\C(^mGq System.err.println("File is not access!"); !*JE%t } k`[ L else 4Y2l]86 { XaOq &7 for(int i=0;i<nStartPos.length;i++) >U?HXu/TJr { j5QS/3 nStartPos = (long)(i*(nFileLength/nStartPos.length)); tu{y } %<8@NbF for(int i=0;i<nEndPos.length-1;i++) jLRUWg { & c a- nEndPos = nStartPos[i+1]; l8rBp87Q } g|L" |Q nEndPos[nEndPos.length-1] = nFileLength; ug47JW } DWT4D)C,U } TNs;#Q 7[aSP5e>T $#E?`At{I //启动子线程 <7Igd6u fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; sY,q*}SLD for(int i=0;i<nStartPos.length;i++) ?L.c~w;l { iX
;E"ov] fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), nu|paA siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ^D`ARH nStartPos,nEndPos,i); O
:P%gz4 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); d9@!se9&Z fileSplitterFetch.start(); 'fB/6[bd } <tp\+v!u // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), _h;#\ )%~ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ~bL^&o(W // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", haj\Dm nEndPos = " + nFileLength); DxX333vC // fileSplitterFetch[nPos.length-1].start(); ~]t/|xep B1\@ n$ w
s(9@ //等待子线程结束 7kbeAJ+{ //int count = 0; |%6zhkoufM //是否结束while循环 %*4Gx +b boolean breakWhile = false; )./pS~ cQj{[Wt4 ) {=2td$=$ while(!bStop) &j2fh!\4 { #)im9LLC# write_nPos(); SVvR]T&_ Utility.sleep(500); M+Rxt.~6 breakWhile = true; C/nzlp~ 8p3pw=p etbB;!6 for(int i=0;i<nStartPos.length;i++) ~i&Lc7Xl { K]q9wR'q if(!fileSplitterFetch.bDownOver) bY6y)l { )2c[]d/a4 breakWhile = false; S].=gR0: break; K%TlB KV } !M]_CPh] } {.
r/tV5IH if(breakWhile) DkO>?n:-C break; |BysSJ _SS6@`X u#tLY/KA //count++; 3e)3t ` //if(count>4) XO |U4#ya // siteStop(); ti`R } J?Kgev% 0q_Ol]<V 7QdU|1] System.err.println("文件下载结束!"); 8e_ITqV% } $~,]F
catch(Exception e){e.printStackTrace ();} A]nDI:pO| } Y4PU~l sePOW#| |0Kj0u8T //获得文件长度 G:qkk(6_# public long getFileSize() -B\`O*Q { yQQ[_1$pq int nFileLength = -1; #+Lo&%p#3 try{ ],%}}UN URL url = new URL(siteInfoBean.getSSiteURL()); [MM11K HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); X/,4hjg httpConnection.setRequestProperty("User-Agent","NetFox"); 7Kx3G{5ja fT.5@RR7^ JnX@eBNV int responseCode=httpConnection.getResponseCode(); [ @>8Qhw if(responseCode>=400) 5gq3 >qo { A0*u(15% processErrorCode(responseCode); ilv6A9/ return -2; //-2 represent access is error |N[SCk>Kj } 1{+Ni{ S<+_yB? F'ZLN]"{ String sHeader; di6A.N5A Ch
` Omq 8}p 5MG for(int i=1;;i++) <wTkPErUG { ,)+O.Lf7&. //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); M3 8,SH< //Utility.log(in.readLine()); R{.wAH( sHeader=httpConnection.getHeaderFieldKey(i); Qwx}e\= if(sHeader!=null) ?,|_<'$4T { C<A82u;t%@ if(sHeader.equals("Content-Length")) z'r .LBnh { VIbm%b$~ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); xtU)3I=F% break; ;3'}(_n } V]}/e!XK\ } `A80""y:M else X %,;IW]a break; _*Vq1D ]C } > ^3xBI:Q } 7w)#[^ catch(IOException e){e.printStackTrace ();} Yl1@gw7 catch(Exception e){e.printStackTrace ();} ZvNXfC3Ia =]7|*- c#9 zw[y-L Utility.log(nFileLength); KnZm(c9+ =KT7ZSTV OR&+`P"-\ return nFileLength; ika{>hbH } \{?v|%n=/i ycw'>W3.* ZH:#~Zyj //保存下载信息(文件指针位置) iG!MIt* private void write_nPos() WP^%[?S2 { e5fJN)+a try{ 1aYO:ZPy output = new DataOutputStream(new FileOutputStream(tmpFile)); L6$,<}l output.writeInt(nStartPos.length);
=sG(l for(int i=0;i<nStartPos.length;i++) P9`i6H'~ { #_7}O0?c3 // output.writeLong(nPos); WF-imI:EK output.writeLong(fileSplitterFetch.nStartPos); -lSm:O@' output.writeLong(fileSplitterFetch.nEndPos); [W{`L_" } o?{VGJH<v output.close(); "@`mPe/ } WKxJ`r\ catch(IOException e){e.printStackTrace ();} IRo[|&c catch(Exception e){e.printStackTrace ();} 0?,EteR } J+DuQ;k; "
I`YJEv =K8`[iH //读取保存的下载信息(文件指针位置) 1ygu>sKS&A private void read_nPos() WHAEB1c#Q { HEe0dqG try{ x6Z$lhZ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); qLYv=h$, int nCount = input.readInt(); _rjCwo\ nStartPos = new long[nCount]; RSmxwx^ nEndPos = new long[nCount]; HTx7._b for(int i=0;i<nStartPos.length;i++) Y,E:? {
k7y!!AV nStartPos = input.readLong(); ?Cu#( nEndPos = input.readLong(); 8-8=
\ } ]s,T`
(& input.close(); 4TR:bQZs } 6oUT+^z# catch(IOException e){e.printStackTrace ();} v/yk T9@; catch(Exception e){e.printStackTrace ();} i@B5B2 } 3'&]v6| E?08=$^5%
7^Onq0ym T private void processErrorCode(int nErrorCode) \D}/tz5~B { u4+VG5.rhT System.err.println("Error Code : " + nErrorCode); |Z2_1(
ku } /[EI0~P R!$j_H Hh!x&;x} //停止文件下载 j<L!ONvJ1 public void siteStop() dd4yS}yBlR { kP;Rts8JD bStop = true; Vl9\&EL for(int i=0;i<nStartPos.length;i++) 54}s:[O fileSplitterFetch.splitterStop(); HmX(=Y j@9nX4Z $~ItT1k_ } >/'WU79TYE } HVu_@[SYR3 //负责部分文件的抓取 T@Q.m.iV4 **FileSplitterFetch.java }){hQt7 */ t<: XY package NetFox; cIgFSwQ4 )O7 Mfr {ZfTUt)-P import java.io.*; ^Y'>3o21f import java.net.*; vk#xCggK #vS>^OyP jliKMd<? public class FileSplitterFetch extends Thread { E|^a7-}| aMj3ov8p R(q
fP String sURL; //File URL cc^V~-ph long nStartPos; //File Snippet Start Position ,e,fOL long nEndPos; //File Snippet End Position v1)jZ.: int nThreadID; //Thread's ID j4NS5 boolean bDownOver = false; //Downing is over LL,~&5{ boolean bStop = false; //Stop identical fitm* FileAccessI fileAccessI = null; //File Access interface a!>AhOk. ^R2:Z&Iv% '{Ywb@Bc public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException K):)bL(B { M=!x0V ; this.sURL = sURL; rP>5OLP this.nStartPos = nStart; %Y!lEzB5 this.nEndPos = nEnd; lFRgyEPH nThreadID = id; / ?Q@Pn fileAccessI = new FileAccessI(sName,nStartPos);//定位 5$O@+W!?@ } pWQ?pTh Y#rao:I Li7/pUq>}! public void run() {cG&l:-r { jdoI)J@9H while(nStartPos < nEndPos && !bStop) _/PjeEm
$p { 8~4{e,} , ^LnCxA&QH 0gnr@9,X try{ ~>qcV=F^d, URL url = new URL(sURL); [z Y9"B<3 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); WMYvE\" httpConnection.setRequestProperty("User-Agent","NetFox"); b
~F85U2 String sProperty = "bytes="+nStartPos+"-"; _\u'~wWl httpConnection.setRequestProperty("RANGE",sProperty); G:A`
n;E0 Utility.log(sProperty); ZgzrA&6 [Si`pPvl B?Pu0
_|s InputStream input = httpConnection.getInputStream();
!$&K~>` //logResponseHead(httpConnection); Z}XA(;ck ,@GI3bl J/)Q{*`_ byte[] b = new byte[1024]; /J5wwQ
(: int nRead; _%.atW7 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ]V}";cm;2 { cp]\<p('A nStartPos += fileAccessI.write(b,0,nRead); 6R"& !.ZF //if(nThreadID == 1) Y2Y/laD // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); x.}iSE{ } Xi$uK-AHpj tX6n~NJ$ %m{h1UQQ+ Utility.log("Thread " + nThreadID + " is over!"); hoPCbjkov bDownOver = true; lKwI lp //nPos = fileAccessI.write (b,0,nRead); `43E-'g } z!?xz catch(Exception e){e.printStackTrace ();} (i&:=Bfn) } 4fp}`U } CSIW|R@
I+ydVj(Op ~#OnA1) //打印回应的头信息 EtKy?]i public void logResponseHead(HttpURLConnection con) Wc#4%kT { U H
`= for(int i=1;;i++) uBH4E;[f { Pe~[qETv String header=con.getHeaderFieldKey(i); 51l : if(header!=null) THkg,*;: //responseHeaders.put(header,httpConnection.getHeaderField(header)); arET2(h Utility.log(header+" : "+con.getHeaderField(header)); Jro) else J?LetyDNr] break; =J<3B
H^m } <Y9e n!3\ } 9x23## s ~"#qG6dP sA#}0>`3S public void splitterStop() Y'mtMLfMc { ^e1@o\] bStop = true; RG0kOw0 } !%?O`+r fX2sjfk <Y:{>= } pE,2pT2> =+DfIO oIrO%v:'! /* )%dxfwd6 **FileAccess.java g]vo."}5E *//文件访问(定位,写) u%!/-&?wF package NetFox; 3K!(/,` import java.io.*; ($'W(DH4 J}BN}|Y@2 9sG]Q[:.] public class FileAccessI implements Serializable{ %PM&`c98z7 ct`j7[ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ~@ =(#tO. RandomAccessFile oSavedFile; q=(%
]BK long nPos; G!dx)v
cD6S;PSg KW-GVe%8f public FileAccessI() throws IOException 0v+-yEkw { 2[j(C
this("",0); %
bfe_k( } ZP{<f~; DK)T2{: 5(>SFxz"t public FileAccessI(String sName,long nPos) throws IOException }D># AFs6# { P q0%oz oSavedFile = new RandomAccessFile(sName,"rw"); ja^_Lh9 this.nPos = nPos; Yw] 7@ oSavedFile.seek(nPos); p<1y$=zS } i/j53towe 3ew4QPT' L4,b ThSG public synchronized int write(byte[] b,int nStart,int nLen) n,U?]mr { /sfJ:KP0 int n = -1; |Dt_lQp# try{ o?Aj6fNY? oSavedFile.write(b,nStart,nLen); &1(- 8z* n = nLen; <d @9[]
} o^XDG^35` catch(IOException e) 2n)?)w]!M { * xCY^_ e.printStackTrace ();
C];P yQS } 8N%nG(
0 0j_kK `^52IkM) return n; 7:,f|> } ~wa6S? _0(%^5Y K>dB{w#gS } 3P9ux #MKM.T,\t 1rJ2}d\y /* 4vEP\E3u<j **SiteInfoBean.java d2V X\ */ U@M3.[jw package NetFox; RFMPh<Ac #8|LPfA d{"-iw)t public class SiteInfoBean { qT48Y _]-4d_&3( %8,$ILN private String sSiteURL; //Site's URL 4b:|>Z- private String sFilePath; //Saved File's Path 0?<#! private String sFileName; //Saved File's Name *!%lBt{2 private int nSplitter; //Count of Splited Downloading File IdQ./@? t
N{S;)q#X z Fo11;*D public SiteInfoBean() lj (y {//nSplitter的缺省值为5 P(hGkY=( //default value of nSplitter is 5 G18w3BFx this("","","",5); }5-w,m{8/ } GC{M"q|_ X` zWw_i 64<;6* public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Y !?'[t { 9 3>4n\ sSiteURL= sURL; TaN{xpo sFilePath = sPath; %up?70 sFileName = sName; K]hp-QK< this.nSplitter = nSpiltter; }d<R
5 ,~1"50 Hp@ Y()"2CCV } FQ]/c#J iRzFA!wH ,%M[$S' public String getSSiteURL() k, HC"?K { wDJ`#"5p{ return sSiteURL; u^1#9bAW8 }
lN,?N{6s "8xAe0-4 8]ZzO(=@{ public void setSSiteURL(String value)
.Q{RTp { A&Y5z[p sSiteURL = value; \D7bTn } X@rA2);6 *doNPp)m <$A,Ex94 public String getSFilePath() 3v/B*M VI { ghk=` !yKw return sFilePath; JvpGxj }
=<HDek 9iA rBL" S+ kq1R public void setSFilePath(String value) Cn{Hk)6 { gcJ!_KZK sFilePath = value; Nep4J; } mdj%zJ8/ eb62(:=N6 Zf'*pp T&q public String getSFileName() 6':iW~iI { jD:
N)(( return sFileName; +yGQt3U } '![oLy 1Kg0y71" d1b]+A G4 public void setSFileName(String value) =Zd(<&B K { : T*Q2 sFileName = value; "-J5!y*,Y } kv+% 4,9$udiGY $Ome]+0 public int getNSplitter() ,X4e?$7g { O$Rz/& return nSplitter; .tngN<f } 8>Cr6m YH&=cI@ ~>2uRjvkwB public void setNSplitter(int nCount) uqMw-f/ { "yWw3(V2> nSplitter = nCount; i5,iJe0cA } |Splbsk } +vBi7#& +$2{u_m, ?,} u6tH /* T]#V **Utility.java zLI0RI.Pe */ ZnG.::&: package NetFox; 2MkrVQQ9g )vp0X\3q` O%bbyR2 public class Utility { 55[ 4)* .tBlGMcN Q8p6n public Utility() Z>[7#;; { T1LYJ]5 1+l 8%G=hB aZfMeW } L@}PW)# >lI7]hbIs //线程睡眠 b}e1JPk}! public static void sleep(int nSecond) Q&9yrx. { &C 9hT try{ =ily=j"hK Thread.sleep(nSecond); X>q`F;W } mxc)Wm<4 catch(Exception e) fi+}hGj(r { h Yu6PWK e.printStackTrace (); iD^,O)b } ^X#y'odtbS } PEMkx"h + @[GV0*yz$ //日志 )rc!irac] public static void log(String sMsg) Ni$'#
W?t { |tXA$}"L8 System.err.println(sMsg); N Ob`)qb } qJey&_ Rr) 5[ j=\h|^gA public static void log(int sMsg) -,bFGTvYQ { nt.LiM/L System.err.println(sMsg); H]TdW;ZbZ } l|5 h } 1S{Biqi+ UwN Vvo "*g+qll!5d /* bR\7j+*& **TestMethod.java qxL\G &~ */ bS_#3T package NetFox; sp K8^sh WBe0^=x UG| /Px ] public class TestMethod { 0<M-asI? 2"/MM2s 6[bopin public TestMethod() 0G%9
@^B { ///xx/weblogic60b2_win.exe
hfB$4s9 try{ '
jciX]g SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); q'3{M]Tk //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); rPxRGoR SiteFileFetch fileFetch = new SiteFileFetch(bean); >w,L= z= fileFetch.start(); ]8G 'R-8} } I&PJ[U#~a catch(Exception e){e.printStackTrace ();} zzmC[,u} Mz+I
YP`L ,@$5,rNf } JsaXI:%1 # :+Nr unDW2#GX public static void main(String[] args) !j~wAdHk { I}$`gUXX8x new TestMethod(); MT6p@b5 } *,u3Wm|7 } {i;,Io7W 点击下载更多相关资料
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