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/* FQ|LA[~ **SiteFileFetch.java vgQhdtt */ kk_9G-M package NetFox; G9'YgW+$7 import java.io.*; +ersP@G import java.net.*; vi! r8k w] 5U fv j5[Q public class SiteFileFetch extends Thread { dy6F+V\DG MY?O/,6 i5E:FS^!I SiteInfoBean siteInfoBean = null; //文件信息Bean iVpA@p long[] nStartPos; //开始位置 g?A5'o&Yu long[] nEndPos; //结束位置 'tV"^KQHI FileSplitterFetch[] fileSplitterFetch; //子线程对象 dJQ }{,+6 long nFileLength; //文件长度 mWN1Q<vn,l boolean bFirst = true; //是否第一次取文件 *@G(3 n boolean bStop = false; //停止标志 ^{fi^lL= File tmpFile; //文件下载的临时信息 4-d99|mv DataOutputStream output; //输出到文件的输出流 zN)|g g=oeS%>E //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 76IALJ00V public SiteFileFetch(SiteInfoBean bean) throws IOException yNqm]H3<MP { DNm7z[t{ siteInfoBean = bean; X$uz=) //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); )kL`&+#> tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Bgk~R.l if(tmpFile.exists ()) 9-a2L JI { lN)Y bFirst = false; gB{]yA"(' read_nPos(); ^Z-.[Y } xu"94y+ else 0XR;5kd% { Wp7@ nStartPos = new long[bean.getNSplitter()]; {?
K|(C nEndPos = new long[bean.getNSplitter()]; D,GPn%Wqi } <r7qq$ e"o6C\c L.TgJv43 ?HEtrX,q } J:~[j XC7Ty'#"KX l?@MUsg+ public void run() "
g0-u(Y { qUEd
E`B //获得文件长度 iJdrY6qd //分割文件 EG(`E9DZ //实例FileSplitterFetch ^:cb
$9F //启动FileSplitterFetch线程 wv7p,9Z[ //等待子线程返回 OXIu>jF try{ H)j[eZP if(bFirst) _>jrlIfc { ;9p#xW6 nFileLength = getFileSize(); i3M?D}(Bs if(nFileLength == -1) ]uStn { AT%*
~tr System.err.println("File Length is not known!"); As6)_8w } Yhc6P%{Z^ else if(nFileLength == -2) "UhK]i*@l { Z0()pT System.err.println("File is not access!"); Wk\mgGn+ } `Ct'/h{
else %?]{U($? { "o^bN 9= for(int i=0;i<nStartPos.length;i++) nl)_`8= { "q9~C nStartPos = (long)(i*(nFileLength/nStartPos.length)); NRHr6!f> } ,u?wYW; for(int i=0;i<nEndPos.length-1;i++) >}dTO/ { Gs_*/E7, nEndPos = nStartPos[i+1]; Lo|NE[b:G } S{^6iR nEndPos[nEndPos.length-1] = nFileLength; TdNuD V } Xb(CH#*{z } w&wA >q>& q9>Ls-k b!4N)t>gl //启动子线程 2d5}`> fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; #sz]PZ\ for(int i=0;i<nStartPos.length;i++) 2A*X Hvwb { )Y&MIJ7>@ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;xW8Z<\- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), #Dj"W8'zh nStartPos,nEndPos,i); ?Kx6Sf<i Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 95.qAFB1 fileSplitterFetch.start(); cW81 } 8X}^~ e // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), p|&ZJ@3 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $'A4RVVT // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", iX8h2l nEndPos = " + nFileLength); a'
IX yj // fileSplitterFetch[nPos.length-1].start(); m%e^&N#%6r KXoL,)Hl 'h!h! //等待子线程结束 ULp)T`P //int count = 0; 9]]!8_0=r //是否结束while循环 7af?E)}v boolean breakWhile = false; V]l&{hl, t7jh?] @!z$Sp= while(!bStop) 8BYIxHHz { .DgoOo%?" write_nPos(); e={k.y}x} Utility.sleep(500); 7.wR"1p# breakWhile = true; wFK:Dp_^ MuDFdbtR nwa\Lrh for(int i=0;i<nStartPos.length;i++) ;yk9(wea}" { @wd!&%yzO if(!fileSplitterFetch.bDownOver) V+qFT3?- { y;,=ajrF breakWhile = false; EzzTJ> break; O{lIs_1.Z } 8yHq7= } qiG]nCq if(breakWhile) mV6#!_" break; a(PjcQ4dY ePV-yy G*kE~s9R
//count++; bWGyLo, //if(count>4) 6@"Vqm|HD // siteStop(); Si#"Wn?| } o\_
Td X4d Xm>*?= Pk$}%;@v System.err.println("文件下载结束!"); W0VA'W } D3<IuWeM catch(Exception e){e.printStackTrace ();} fC=fJZU7$ } <T(s\N5B= =}~NRmmF I["F+kt^^ //获得文件长度 [:AB$l* public long getFileSize() 5Z*
b(R { |$YyjYK int nFileLength = -1; m(2G*} try{ \w{@u)h URL url = new URL(siteInfoBean.getSSiteURL()); fUb1/-} HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,]0S4h67 httpConnection.setRequestProperty("User-Agent","NetFox"); 17e=GL l_^T&xq8 Oamv9RyDvC int responseCode=httpConnection.getResponseCode(); 4 hL`=[AB if(responseCode>=400) zt7_r`#z { hNH.G(l0 processErrorCode(responseCode); x7vq?fP0n return -2; //-2 represent access is error XxmJP5 } "nVK< V d aXRv}WO$>k +n@f'a"> String sHeader; /)sDnJ1r *
eA{[ zl0;84:H for(int i=1;;i++) t[%x}0FP-F { ^Ku\l #B //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); q]F4Lq( //Utility.log(in.readLine()); EYA/CI sHeader=httpConnection.getHeaderFieldKey(i); x$~3$E if(sHeader!=null) U'rr?,RML { A|2 <A
! if(sHeader.equals("Content-Length")) IeO-O'^&` { =Nw2;TkB[ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 9Tqo LX break; #]?tY}~ } ^Y$QR] } pI
&o?n else 2K3MAd{ break; J
cP~-cp } BTOA &Ag } 0Xp
nbB~~I catch(IOException e){e.printStackTrace ();} %_>Tcm= catch(Exception e){e.printStackTrace ();} - oU@D Ynvj; | @uq() Utility.log(nFileLength); DYc.to- Y
[4vRzc 4S'[\ZJO return nFileLength; E3y6c)< } `+oV/:Q3 Ud$Q0m& DG3[^B //保存下载信息(文件指针位置) D`en%Lf!m private void write_nPos() |pBMrN+is { +-U@0&Y3M try{ pQqbZ3] output = new DataOutputStream(new FileOutputStream(tmpFile)); xtOx|FkYcl output.writeInt(nStartPos.length); I=U+GY: for(int i=0;i<nStartPos.length;i++) l(gJLjTH% { 3QIdN // output.writeLong(nPos); l`DtiJ?$$0 output.writeLong(fileSplitterFetch.nStartPos); Y=9qJ`q output.writeLong(fileSplitterFetch.nEndPos); F@<O;b#Ip } dl:-k r8 output.close(); it~Z|$ } 5bXHz5i catch(IOException e){e.printStackTrace ();} :]yg catch(Exception e){e.printStackTrace ();} `Uv)Sf{ } tzPC/? )Ea8{m! Hc M~ //读取保存的下载信息(文件指针位置)
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T private void read_nPos() +)zDA:2Wa" { Yhe+u\vGs\ try{ "2%>M DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); sA3UeTf int nCount = input.readInt(); k'g$2 nStartPos = new long[nCount]; p<q].^M nEndPos = new long[nCount]; F%Kp9I* for(int i=0;i<nStartPos.length;i++)
NaF(\j { U7E nStartPos = input.readLong(); r?\|f:M3 nEndPos = input.readLong(); )AJ=an||5 } lw s(/a*c input.close(); {$0&R$v3 } `%oIRuYG]j catch(IOException e){e.printStackTrace ();} =rEA:Q`~w catch(Exception e){e.printStackTrace ();} @^'$r&M } `YU=~xQ 2yvVeo&3 &-=K:;x private void processErrorCode(int nErrorCode) "NKf0F { {8 N=WZ System.err.println("Error Code : " + nErrorCode); x)3~il5 } Vg{Zv4+t p!}ZdX[u mW~P!7] //停止文件下载 U_l7CCK + public void siteStop() pr$~8e=c { D;jK/2 bStop = true; #Mg lHQO+ for(int i=0;i<nStartPos.length;i++) Ge^Qar fileSplitterFetch.splitterStop(); @ ICbKg: 0Qp[\ia Fom>'g* } Z["BgEJ } Pr`s0J%m //负责部分文件的抓取 p-,Iio+ **FileSplitterFetch.java S.W^7Ap */ ck$M(^)l package NetFox; v77fQ0w3 ZjS(ad*.2 /=TH08 import java.io.*; FN!1|'VK import java.net.*; '#W_boN x#mtS-sw2Q >fH*XP>( public class FileSplitterFetch extends Thread { Yy hny[fa9 0cFn{q'u N
xFUO0O3 String sURL; //File URL @(>XOj?+ long nStartPos; //File Snippet Start Position c" +zgP long nEndPos; //File Snippet End Position #]y5zi int nThreadID; //Thread's ID O#:&*Mv boolean bDownOver = false; //Downing is over =JW[pRI5a boolean bStop = false; //Stop identical ' S ,2 FileAccessI fileAccessI = null; //File Access interface &{ ZSE^ R*bmu B)6#Lp3 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException t.)AggXj# { {fU?idY)c this.sURL = sURL; qp&4 1 this.nStartPos = nStart; y(}Eko4u5 this.nEndPos = nEnd; \2>?6zs nThreadID = id; nvt$F%+ fileAccessI = new FileAccessI(sName,nStartPos);//定位 h>klTPM> } ZdH1nX(Yh3 _B[WY 8_a3'o%5 public void run()
Jq)U</ { /H)Br~ l while(nStartPos < nEndPos && !bStop) a+Ab]m8` { 63M=,0-Qt DsGI/c ertBuU try{ 5un^yRMB- URL url = new URL(sURL); @5E,:)T*wR HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ^N- 'xy httpConnection.setRequestProperty("User-Agent","NetFox"); j5^-.sEEw String sProperty = "bytes="+nStartPos+"-"; b#a@rh httpConnection.setRequestProperty("RANGE",sProperty); ,r`UBQ}? Utility.log(sProperty); X;VQEDMPU OH6n^WKY DP*@dFU" InputStream input = httpConnection.getInputStream(); O%g\B8; //logResponseHead(httpConnection); [zh"x#AyI "Pj}E=!k \$pkk6Q3,w byte[] b = new byte[1024]; Qqq
<e int nRead; 8TPN#" while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) zCV7%,H~ { Qxt@V nStartPos += fileAccessI.write(b,0,nRead); `!i-#~n //if(nThreadID == 1) [/$N!2'5 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
RJ}#)cT } wkBL=a 3?`" N4wA#\- Utility.log("Thread " + nThreadID + " is over!"); =~ jAoOC@ bDownOver = true; <2<87PU //nPos = fileAccessI.write (b,0,nRead); pbLGe' } ;#/0b{XFj catch(Exception e){e.printStackTrace ();} S
GM!#K } 78]gtJ } &{z<kmc$6 P^i.La, E\$C/}T //打印回应的头信息 S_\
F public void logResponseHead(HttpURLConnection con) &z@~B&O { nIBFk?)6 for(int i=1;;i++) >qh?L#Fk { F8=nhn String header=con.getHeaderFieldKey(i); c!wtf,F if(header!=null) 6ep>hS4A& //responseHeaders.put(header,httpConnection.getHeaderField(header)); Fm3t'^SqF Utility.log(header+" : "+con.getHeaderField(header)); !9 f4R/ ? else c-8!#~M( break; 8\Hr5FqB( } wC`
R>) } 1mH\k5xu 2"&)W dm zOB=aG?/ public void splitterStop() A'-_TFwW { Ik~1:D]f bStop = true; Fn+?u } v}[dnG \#6Fm_b]u ,}J_:\j } euQ.ArF e:-8k_0| d,9`<1{9 /* 8l>CR#%@C **FileAccess.java &y\sL"YL! *//文件访问(定位,写) s'u(B]E package NetFox; &`Ck import java.io.*; X?o(
b/F- 4c159wsnQ ,Z~;U public class FileAccessI implements Serializable{ hfrnxeM#~ C@gXT]Q
0} //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 qp~gP RandomAccessFile oSavedFile; >/^#Drwb!i long nPos; ;t(f1rPyE qf8[!5GM S$[k Q|Am public FileAccessI() throws IOException 0rE(p2 { rU2iy"L this("",0); kWW w<cA } F
L=,YP 6`\ya@ Cifd21v4 public FileAccessI(String sName,long nPos) throws IOException I%lE;'x { -]S.<8<$ oSavedFile = new RandomAccessFile(sName,"rw"); G>z,#Xt this.nPos = nPos; ,Em$ !n oSavedFile.seek(nPos); .}`hCt08 } _*6v|Ed? k\7:{y@, Q+$Tt7/ public synchronized int write(byte[] b,int nStart,int nLen) %y<]Yzv. { jirbUl int n = -1; #A<P6zJXR try{ H0*,8i5I oSavedFile.write(b,nStart,nLen); @pza>^wk n = nLen; JPx7EEkZR4 } ;#k-)m% catch(IOException e) q/gB<p9 { G/?~\
}:s
e.printStackTrace (); R,_d1^|*w } w4:\N U {nMAm/kyj Es'Um,ku return n; XFqJ 'R } =A!S/;z> [L~@uAMw: K%j&/T j1 } vO@s$qi -kj< 1~YW ^TFs;|.. /* d- E4~)Qy **SiteInfoBean.java 9NpD!A&64< */ `a]44es9q package NetFox; Nt -<W+, lmCZ8 j(FF Bl;KOR public class SiteInfoBean { Z)"61)
) t+TYb#Tc `\Unpp\I private String sSiteURL; //Site's URL s8gU7pT49 private String sFilePath; //Saved File's Path 0b|zk < private String sFileName; //Saved File's Name >G"X J<IO private int nSplitter; //Count of Splited Downloading File Y}STF cO#oH2} *r,b=8| public SiteInfoBean() \fLvw {//nSplitter的缺省值为5 wts:65~ //default value of nSplitter is 5 +cB&Mi5 this("","","",5); >cR)?P/o } 3OqX/z, XvGA|Ekf< uB.-t^@ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ^]c6RE_ { tj1JB% sSiteURL= sURL; `
%?9=h% sFilePath = sPath; >^_ bD sFileName = sName; 8;\sU?
this.nSplitter = nSpiltter; 2 WBq H7g<
p" !u;>Wyd W } i+vsp@d u<tk G B ; y.E! public String getSSiteURL() 'cd N3i( { Iw=Sq8 return sSiteURL; }nx=e#[g%2 } I$q> *OTS'W~t o'V%EQ public void setSSiteURL(String value) Q9?t[ir { m7|RD]q& sSiteURL = value; ((3}LQ } ^4$'KIq cPF<D$B ;[0&G6g public String getSFilePath() C2F0tr| { #gbH^a' return sFilePath; 2y GOzc } i%{X9!*%TX .p6+l!" f@V3\Z/6E public void setSFilePath(String value) a}nbo4jK { Y:QD sFilePath = value; O>0VTW } `)>7)={ :
mGAt[Cc '/%zi,0 public String getSFileName() UVuDQ { )mcEQ -!b return sFileName; fys } ]F*3"y?)2 ^HA
%q8| n X]*QUV]i public void setSFileName(String value) |;vi*u { oR#:NtX@ sFileName = value; '\ DSTr:N } HeN~c<NuB P&A|PY,P L\aBc} public int getNSplitter() v:_B kHN' { l:(Rb-Wy return nSplitter; iZ,YxN<R } 6tjcAsV 4&^9Wklj j .A6S` public void setNSplitter(int nCount) p9ZXbAJ{ { 7S^""*Q^ nSplitter = nCount; c'fSu;1 } 1&)_(|p[C }
:Ao!ls'= @1RP/y% l5t2\Fl /* Ss?CfRM **Utility.java :VA.Q rKW */ M^madx6` package NetFox; _GtBP'iN #
'|'r+ 9ptFG]lZ public class Utility { .V'V:;BE% A7XnHPIw QDmYSY$ public Utility() #=e;?w { JqU ADm &Vk; VM`5 =H5\$&xj4. } alFjc.~} c@m5~
//线程睡眠 ub?K, public static void sleep(int nSecond) hq>Csj==@ { g=)J~1&p try{ 72db[ Thread.sleep(nSecond); n]!fO
6kj } mryN} catch(Exception e) $6>?; { L):qu e.printStackTrace (); LxN*)[ Wb } 4/>Our 5 } 2s ,8R $So%d9k //日志 +{`yeZ9S public static void log(String sMsg) w=b(X
q+: { XAOak$(j System.err.println(sMsg); @Cq? :o< } L):U"M>]= 4g
_"ku Lm)\Z P+W public static void log(int sMsg) 5 MxL*DB=b { @$@mqHI} System.err.println(sMsg); %,*$D}H } 3NK ^AaTK } =(r*
5vd $6f\uuTU2" =H]F`[B= /* vxlOh.a|/L **TestMethod.java wzcai
0y* */ USML~]G
z package NetFox; v[k5.\No \&xl{64 J QKdW public class TestMethod { V2&^!#=s
**_&i!dtL ")#<y@Rv public TestMethod() ak:v3cQR { ///xx/weblogic60b2_win.exe <|6%9@ try{ 0&Gl@4oZ" SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); !3&kQpF //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 8|1^|B(l SiteFileFetch fileFetch = new SiteFileFetch(bean); Eh8Pwt7C@ fileFetch.start(); 2h~- } =ZYThfAEw catch(Exception e){e.printStackTrace ();} #G^A-yjn B~WtZ-%%E Dma.r } `\$8`Zb; pNaiXu3 Y0uvT7+[hi public static void main(String[] args) VAQ)Hc] { [.yJV` new TestMethod(); =5]n\"/ } ?^!,vh } yOXO)u1n 点击下载更多相关资料
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