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/* +Mijio **SiteFileFetch.java 8O]`3oa> */ T 'c39 package NetFox; B2j1GJEO import java.io.*; -c]AS[( import java.net.*; ciODTq? 3E*m.jX [s[ZOi!;I public class SiteFileFetch extends Thread { E>]K#H
]Ac}+? l~;>KjZg SiteInfoBean siteInfoBean = null; //文件信息Bean -MS#YcsV long[] nStartPos; //开始位置 ]87BP%G long[] nEndPos; //结束位置 0)Ephsw FileSplitterFetch[] fileSplitterFetch; //子线程对象 !Nx1I long nFileLength; //文件长度 SC~k4&xy boolean bFirst = true; //是否第一次取文件 r~)fAb? boolean bStop = false; //停止标志 T8A(W File tmpFile; //文件下载的临时信息 3:nBl?G< DataOutputStream output; //输出到文件的输出流 %\<b{x# G 9r]|P}yuS //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) w1"+HJd public SiteFileFetch(SiteInfoBean bean) throws IOException A/<u>cCW { 4{F1GW siteInfoBean = bean; Kb(11$U //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); edo )W
mn tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info");
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if(tmpFile.exists ()) *KvD$(ny { c$ZVvu bFirst = false; =^u;uS[IW read_nPos(); J;obh.}u"{ } dW4jkjap else [y@*vQw { a,vS{434J nStartPos = new long[bean.getNSplitter()]; iv$YUM+ nEndPos = new long[bean.getNSplitter()]; i$E [@ } T3P9 KCTX2eNN&h %nY\" Pt"H_SW~k } 'M >m$cCMZ _aPAn|. =lJ
?yuc public void run() /jGBQ-X { @M"gEeI9 //获得文件长度 )k,n} //分割文件 p@G7}'|eyA //实例FileSplitterFetch nU_O|l9 //启动FileSplitterFetch线程 )6)bI.BY //等待子线程返回 pjFO0h_Y try{ y,nmPX?]n if(bFirst) VQla.Y { V_SH90@)+ nFileLength = getFileSize(); z/{X{+Z if(nFileLength == -1) h )
Wp { ^-Od*DTL System.err.println("File Length is not known!"); qazA,|L! } +\Vm t[v else if(nFileLength == -2) RHC ZP { 3{3@>8{w System.err.println("File is not access!"); g Y~r{ } GjhTF| else |[>@Kk4 { <PpvVDy3 for(int i=0;i<nStartPos.length;i++) : ZrJL& { "OjAhKfG nStartPos = (long)(i*(nFileLength/nStartPos.length)); *XTd9E^tXq } tVn?cS for(int i=0;i<nEndPos.length-1;i++) |EE1S{!24m { 6^Wep- $ nEndPos = nStartPos[i+1]; &|>~7( } i
6G40!G=) nEndPos[nEndPos.length-1] = nFileLength; _!',%+ } yU
v
YV-7 } C.jWT1 f,HUr% @ )Zr9
`3[ //启动子线程 =hKAwk/^ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Z0Z6aZeb for(int i=0;i<nStartPos.length;i++) {]^Ixm-,f { ?mg@z q8 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0\%g@j-aD siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ]P?<2, nStartPos,nEndPos,i); |ri)-Bk
, Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9wWBE<}>u fileSplitterFetch.start(); $"kPzo~B_ } 3gi)QCsk // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), E^i]eK*" siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1);
:skR6J // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", aas.-NT nEndPos = " + nFileLength); v=N?(6T // fileSplitterFetch[nPos.length-1].start(); GDxv2^4 A8Ju+ F[jE#M=k //等待子线程结束 ,L/ x\_28 //int count = 0;
lgOAc, //是否结束while循环
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D*l boolean breakWhile = false; FO2e7p^Q vQEV,d1 1)(>'pY while(!bStop) -* ,CMw { $O%{l.-O write_nPos(); @[n#-!i Utility.sleep(500); rpT.n-H>%A breakWhile = true; W'[V$* 'h*jL@%TT p>B2bv+L for(int i=0;i<nStartPos.length;i++) XNJ4T]>< { t7+A!7b{ if(!fileSplitterFetch.bDownOver) EA& 3rI>U) { xl\Kj2^ breakWhile = false; m^_=^z+ break; Jxe+LG } l[}4
X/ } c2npma]DZ if(breakWhile) tq3_az ~1 break; y}odTeq C ^Y\?2h1 ~ nsb //count++; 4V,.Oi //if(count>4) gF)9a_R%p // siteStop(); "%-Vrb=:Y } 5> x_G#W ffrIi',@ {OU|' System.err.println("文件下载结束!"); 8`q7Yss6F } _Iy\,< catch(Exception e){e.printStackTrace ();} 8%[pno
|0I } @Wu-&Lb L:G#> d?2V2`6 //获得文件长度 Y %JQ public long getFileSize() V'vR(Wx { AcH-TIgM/ int nFileLength = -1; H9cPtP~a) try{ @]=40Yj~w URL url = new URL(siteInfoBean.getSSiteURL()); WgtLKRZ\ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $]2)r[eA) httpConnection.setRequestProperty("User-Agent","NetFox"); Y2H-D{a27 r\Nfq(w QU).q65p int responseCode=httpConnection.getResponseCode(); jj5S+ >4 if(responseCode>=400) EApKN@<" { Z>rY9VvWD processErrorCode(responseCode); nr!N%Hi return -2; //-2 represent access is error g52a
vG } L44m!%q AJPvwu}D ;P@]7vkff String sHeader; oUv26t~ u!_l/'\ #z `W ,^C for(int i=1;;i++) ,erw(7}'. { @A/k"Ax{r //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 1vj/6L //Utility.log(in.readLine()); F!omkN sHeader=httpConnection.getHeaderFieldKey(i); 4U}qrN~= if(sHeader!=null) [0H0%z#tU& { oo5=5s6 3} if(sHeader.equals("Content-Length")) c`a( { d1j9{ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 2QfN.<[- break; drq3=2 } ]R__$fl`8 } )pnyVTKt else +&EXTZ@o break; FfoOJzf~o } zsFzg.$3& } ;XKe$fsa~? catch(IOException e){e.printStackTrace ();} mB?x_6#d9 catch(Exception e){e.printStackTrace ();} .fA*WQ!lb wKV4-uyr #+I'V\[ Utility.log(nFileLength); kxn&f(5 \CbJU UtZ,q!sg return nFileLength; j)A#}4jd } {1W:@6tl ccD+AGM.
W yL+HB} //保存下载信息(文件指针位置) Fnw:alWr private void write_nPos() Ha'[uEDb { Rj8%% G-pt try{ P]_d;\
!"v output = new DataOutputStream(new FileOutputStream(tmpFile)); 8%?y)K^
D output.writeInt(nStartPos.length); K1B9t{T for(int i=0;i<nStartPos.length;i++) MmuT~d/ { ^J!q>KJs // output.writeLong(nPos); bx@l6bpQ output.writeLong(fileSplitterFetch.nStartPos); V~J5x >O output.writeLong(fileSplitterFetch.nEndPos); qQ&uU7,# } -yYdj1y; output.close();
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} `8:0x?X catch(IOException e){e.printStackTrace ();} qUe
_B catch(Exception e){e.printStackTrace ();} pSZ2>^"; } 6cQgp]% 1>!LK_ gq?:n.;TY //读取保存的下载信息(文件指针位置) U|(+-R8Z private void read_nPos() d0cL9&~qW { Qzi?%& try{ em$pU*`P DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); y_]+;% w: int nCount = input.readInt(); @ZKf3,J0 nStartPos = new long[nCount]; mkl{Tp* nEndPos = new long[nCount]; ,$P,x for(int i=0;i<nStartPos.length;i++) FR&`R { _T=g?0
q nStartPos = input.readLong(); VFHd2Ea( nEndPos = input.readLong(); 4w4B\Na>l } YO6BzS/~ input.close(); VJh8`PVX } SC{m@ catch(IOException e){e.printStackTrace ();} 1J@Iekat catch(Exception e){e.printStackTrace ();} P&-o>mM } <Au2e iCt.rr~;V ]S|FK>U[ private void processErrorCode(int nErrorCode) niVR!l { !xM5
A[f System.err.println("Error Code : " + nErrorCode); 7*/{m K) } 5=dL` B@,9Cx564 k$EVr([ //停止文件下载 K|& f5w public void siteStop() zmMc*| { Mf}M/Fh bStop = true; wBPo{ for(int i=0;i<nStartPos.length;i++) 8~sP{V% fileSplitterFetch.splitterStop(); )8Va%{j 9
_d2u# >yIJ8IDF } xo:kT ) } "L~(%Nx3 //负责部分文件的抓取 6|TSH$w_ **FileSplitterFetch.java b}J%4Lx%m */ CSk]c9= package NetFox; 4#U}bN sdu?#O+c1 95DEuReKi import java.io.*; 1^iBS import java.net.*; ?b7\m":' 7>JYwU{ `i7r] public class FileSplitterFetch extends Thread { U=>S|>daR .
,7bGY 1$ p!.~hw9 String sURL; //File URL ~%{2Z_t$ long nStartPos; //File Snippet Start Position n ]ikc| long nEndPos; //File Snippet End Position XtF
m5\U int nThreadID; //Thread's ID DwD$T%kF boolean bDownOver = false; //Downing is over b7Y g~Lw boolean bStop = false; //Stop identical 74s{b]jN'- FileAccessI fileAccessI = null; //File Access interface @hLkU4S Cs $5Of( pYO =pL^Q public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException \& JZ
>h { jDzQw>TX this.sURL = sURL; (8 nv&| this.nStartPos = nStart; ]@q%dsz this.nEndPos = nEnd; xNz(LZ.c nThreadID = id; #-hO\
QdC fileAccessI = new FileAccessI(sName,nStartPos);//定位 v=`yfCX-qX } x2"iZzQlD 8:cbr/F< H=dIZ public void run() 5&Oc`5QD {
4aayMS!# while(nStartPos < nEndPos && !bStop) Hl*vS { ^xo<$zn .nV2n@SR >J"IN I try{ 5/H,UL URL url = new URL(sURL); ,'#TdLe HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |dRVSVN httpConnection.setRequestProperty("User-Agent","NetFox"); 3"fDFR String sProperty = "bytes="+nStartPos+"-"; A_9WSXR httpConnection.setRequestProperty("RANGE",sProperty); f~IJ4T2#N Utility.log(sProperty); Z\0Rw># 3;nOm =I @sXFu[!U InputStream input = httpConnection.getInputStream(); _1"
ecaA //logResponseHead(httpConnection); XTol|a= UK`A:N2[ L"_XWno byte[] b = new byte[1024]; J0G@]H int nRead; "> uN={Iy while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) z^Q'GBoBA { [K{{P|(q nStartPos += fileAccessI.write(b,0,nRead); y@P%t9l //if(nThreadID == 1) De $AJl // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); "W<Y1$Y=Y } 5=>1>HYM 9>}&dQ8 '3.\+^3 Utility.log("Thread " + nThreadID + " is over!"); b
F=MQ bDownOver = true; s.3"2waZ=T //nPos = fileAccessI.write (b,0,nRead); 3G})$y3m } ,5DJ54B! catch(Exception e){e.printStackTrace ();} b|#=kPVgL} } A^U84kV= } 'C+cQLig@ sEhvx+( Mk!Fy]3 //打印回应的头信息 hU)t5/h;K public void logResponseHead(HttpURLConnection con) %Ymi,o> { HB07 n4 | for(int i=1;;i++) =C %)(| { bQ<qdGa String header=con.getHeaderFieldKey(i); <'y<8gpM if(header!=null) }\4yU=JPK //responseHeaders.put(header,httpConnection.getHeaderField(header)); AGhenDNV Utility.log(header+" : "+con.getHeaderField(header)); *X5)9dq else Pz4#>tP break; "k zKQ~ } *D5 xbkH=. } blc?[ [,! [-~pDkf: U?[ ( public void splitterStop() {gMe<y { k
%I83,+ bStop = true; 8NN+Z< } ]ua3I}_B6v hA=uoe\ &AiAd6 } ]uXJjS f 0B6!$) *-i ZR>BK, /* V"Q\7,_k. **FileAccess.java <z Gh}.6v *//文件访问(定位,写) E^8|xT'h6 package NetFox; D
0Xl`0"' import java.io.*; p1N}2]e IQqUFP$8g ;hj lRQ\ public class FileAccessI implements Serializable{ y^2#;0W qHt/,w='Q //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 VKa+[ RandomAccessFile oSavedFile; *V>?m6y/ long nPos; F:j@ JMpQ Pz)lq2Zm9 h nydH-;cz public FileAccessI() throws IOException *ug~LK5Y. { v^"\e&XL this("",0); E@VQxB7+ }
(s8b?Ol/ J[/WBVFDf OB>Hiy
public FileAccessI(String sName,long nPos) throws IOException S-t#d7'B { *-VRkS-G oSavedFile = new RandomAccessFile(sName,"rw"); eORXyh\K this.nPos = nPos; k1&9 bgI oSavedFile.seek(nPos); `46~j } g`fG84 *s6x zs$r>rlO public synchronized int write(byte[] b,int nStart,int nLen) G
e;67 { }'[>~&/" int n = -1; 7QO/; zL try{ Gp%po@A& oSavedFile.write(b,nStart,nLen); _^ hg7&dF n = nLen; W>3S%2d } -^&=I3bp catch(IOException e) hSehJjEoM { :{u`qi e.printStackTrace (); |q`NJ } dT|XcVKg =<]`'15"V &V4Zmn?UU return n; ~yv7[`+Tgg } b]u$!W Xhe& "rM Emlj,c<?j } *)m:u : 5c- P lm% Dka,v /* ?N kKDvv **SiteInfoBean.java ^'3c%&Zf3 */ jY6GWsh:9 package NetFox; %QP[/5vQ *_D/_Rp7 N{J
1C6 public class SiteInfoBean { MA
.;=T la[pA XgxE M1( private String sSiteURL; //Site's URL 2w|5SK_ private String sFilePath; //Saved File's Path n%E,[JT private String sFileName; //Saved File's Name /HIyQW\Ki- private int nSplitter; //Count of Splited Downloading File %.Y5%TyP 9f~qD&~ fPeS; public SiteInfoBean() *p/,Z2f {//nSplitter的缺省值为5 ^h?fr` //default value of nSplitter is 5 G'|ql5Zw this("","","",5); Q68~D.V%r } C?qRZB+W# xG!~TQ ^ ` LqNG public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) P2n8H Fi { cSL6V2F sSiteURL= sURL; IQ_6DF sFilePath = sPath; ; Y/nS sFileName = sName; j!+jLm!l this.nSplitter = nSpiltter; %q5dV<X'c [,;Y5#Y[5 !*]i3 ,{7v } 4DL;Y SZGR9/*^ BX_yC=S public String getSSiteURL() ns~]a:1yh { ?%3dgQB' return sSiteURL; ; Z:[LJd } @i ~ A7L0/ +4yre^gC `v-[& public void setSSiteURL(String value) "Enb { 4cQP+ n sSiteURL = value; KV0*dB; } e!6yxL*[@[ Bx45yaT A]c'TT@6 public String getSFilePath() bM?gAY]mB8 { 7O1MC 8{ return sFilePath; 8N&'n } oAO{4xP XG|N$~N+ 2 }
=OE.cf@ public void setSFilePath(String value) Kx9u|fp5 { y:)^*2GA-B sFilePath = value; *JK0X } ]:e_Y,@ izP)t C0N
:z.)4 public String getSFileName() L:HvrB~ { B[8bkFS>] return sFileName; s{b\\$Rb } Jc":zR@5 ^N7H~CT" Pd7\Q]of public void setSFileName(String value) 8"%Es { Q6m8N sFileName = value; q|*^{(tWs } $0$sM/ % NP;W=A F 0AHQ(+Ap public int getNSplitter() tV!?Ol { t:2DB) return nSplitter; $udhTI#, } 44KoOY_ 4jXo5SkEJ &
/8Tth86 public void setNSplitter(int nCount) 40?RiwwD { mx^Ga=:
? nSplitter = nCount; \3hA_{ w } T'p L&@,Q }
m-t:'B )Qb,zS6 SIp)& /* #*bmwb*i **Utility.java y#'hOSR2 */ )$] lf } package NetFox; 4r(0+SO o2
ng \Th<7WbR6# public class Utility { y,5qY}P+ wPg/.N9H /\%<VBx ?q public Utility() rZ?:$],U! { JpS}X\]i JP4DV=}L AW5iwq6p } ET.jjV c)#P}Ai //线程睡眠 X+!+&RAN* public static void sleep(int nSecond) JmCMFqB9 { DFMpU.BN W try{ uzdPA'u Thread.sleep(nSecond); T^ktfgXq } :)#;0o5 catch(Exception e) $z=%e#(!I { 7}&:07U e.printStackTrace (); u%C oo } n#+EG3 } F` ybe\ xFF!)k # //日志 v@zi?D K public static void log(String sMsg) BpIyw
{ 4]r_K2.cc System.err.println(sMsg); M!,H0(@G } D|q~n)TW5 _)45G"M O|H: public static void log(int sMsg) &vrQ *jX { s70Z&3A System.err.println(sMsg); DMUirA; } +Kk1[fh-
} 8n3]AOc'~- poBeEpbs 6nTM~]5. /* WJq>%<# **TestMethod.java c9+G
Qp */ j*>J1M3E package NetFox; [1rQ'FBB^1 =muQ7l:( "'CvB0> public class TestMethod { |<Ls;:5. -m@c{&r Qxz[ public TestMethod() h
/ { ///xx/weblogic60b2_win.exe _r-LX" try{ w*`:v$ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); z_>~=Mm //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); v +4v SiteFileFetch fileFetch = new SiteFileFetch(bean); 2W+~{3[# fileFetch.start(); vzSb( } DvH-M3 catch(Exception e){e.printStackTrace ();} W_B=}lP@x g@#he95 } +RJ{)Nec } 0%bCP/ W'4/cO l>\EkUT public static void main(String[] args) ^BF}wQb:j { &ZD@-"@ new TestMethod(); 8xB-cE } u[)X="-e# } m4m-JD|v 点击下载更多相关资料
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