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/* c#fSt}J>C **SiteFileFetch.java -ozcK */ wr6(C: package NetFox; #<w2xR]: import java.io.*; dhr-tw import java.net.*; llpgi,-= 7"])Y t1o_x}z4. public class SiteFileFetch extends Thread { 3`njQvI\ [5P1 pkZ o~'UWU'# SiteInfoBean siteInfoBean = null; //文件信息Bean //}KWz long[] nStartPos; //开始位置 9@
^*\s long[] nEndPos; //结束位置 OL@' 1$/A FileSplitterFetch[] fileSplitterFetch; //子线程对象 2
3A)^j long nFileLength; //文件长度 S<++eu boolean bFirst = true; //是否第一次取文件 g`H;~ w boolean bStop = false; //停止标志 uX&Tn1Kg File tmpFile; //文件下载的临时信息 6#2E {uy;R DataOutputStream output; //输出到文件的输出流 /8>we`4 P#2#i]- //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Rap_1o9#\ public SiteFileFetch(SiteInfoBean bean) throws IOException <'P+2(Oi { Ke\FzZ] siteInfoBean = bean; U]iZ3^8VT //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); W=!D[G R tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 5e
c T. if(tmpFile.exists ()) 6"o@d8>v { ) !l1 bFirst = false; iuoZk5O read_nPos(); KyzdJ^xC" } 9+frxD&pO else
hh^_Z| 5 { !4+@b
s nStartPos = new long[bean.getNSplitter()]; {MmK:C nEndPos = new long[bean.getNSplitter()]; cq1)b\ | } xcXnd"YYE 9P-I)ZqL ,@@FAL %uy?@ e } fSm|anuKZe X0]5I0YP v,)vW5jGI public void run() SMHQh.O?5 { {mB &xz:b //获得文件长度 {&)E$M //分割文件 #D8u#8Dz //实例FileSplitterFetch ' n "n; //启动FileSplitterFetch线程 \.MPjD //等待子线程返回 >m`<AynJ try{ !4fT<V( if(bFirst) Y^}c+)t { A}0u-W nFileLength = getFileSize(); P<R'S if(nFileLength == -1) PWN$x`h g[ { 7V;wCm#b System.err.println("File Length is not known!"); >L88` } 9*xv
,Yz8 else if(nFileLength == -2) -T .C?Q g {
<Lfo5:. System.err.println("File is not access!"); LhtA]z,m } G\H |\i else K]Z];C#) {
MVe4[< for(int i=0;i<nStartPos.length;i++) \yA*)X+ { SQI =D8 nStartPos = (long)(i*(nFileLength/nStartPos.length)); {'q(a4 } -ob1_0 for(int i=0;i<nEndPos.length-1;i++) hkvymHaG { |6zx
YuX nEndPos = nStartPos[i+1]; Hu7WU;w } "v5jYz5M nEndPos[nEndPos.length-1] = nFileLength; @DCw(.k* } d?1[xv; } 9
IY1"j0O |F52)<\ C3e0d~C //启动子线程 #~;:i fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;Qdw$NuW for(int i=0;i<nStartPos.length;i++) Te&5IB- { ~#9(Q fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), !l#n.Fx&3 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 6^hCW`jG nStartPos,nEndPos,i); ](sT,' Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); \={A%pA;@{ fileSplitterFetch.start(); U
jB5Xks } U:O&FE // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "A3V(~%! siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); %&S :W%qm? // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", j<_)Y(x> nEndPos = " + nFileLength); ?wbf)fbq // fileSplitterFetch[nPos.length-1].start(); pwr]lV$w 5s=L5]]r_j s%S; 9T //等待子线程结束 'jd fUB //int count = 0; C;oT0( //是否结束while循环 'n4
iW boolean breakWhile = false; S"Mm_<A$@ OE_A$8L ];au!
_o while(!bStop) ?<eH!MHF { *odwg$ write_nPos(); kU[#.
y=%p Utility.sleep(500); ?
EXYLG breakWhile = true; QB#rf=' e6hfgVN jij-pDQnv for(int i=0;i<nStartPos.length;i++) C(lGW,! { "}jv5j5 if(!fileSplitterFetch.bDownOver) lc\f6J>HT { nM6/c breakWhile = false; ;\)N7SJ break; !d3:`l< } WeRX ~ } #tQ__V if(breakWhile) `{W>Dy break; G}p*oz~ Q
a8;MxK` Dro2R_j{ //count++; b;Uqyc //if(count>4) +C){&/=# // siteStop(); u(Y?2R } 8+OcM
;0 ''~#tK
f L&h90Az1W System.err.println("文件下载结束!"); /yO|Q{C}M8 } $z* Y:vFP catch(Exception e){e.printStackTrace ();} w2e9Ue~WH } +'QE-#%{= =hDFpb,mr ZT%Q:]B+ //获得文件长度 f%5 s8) public long getFileSize() ?_Y2'O { VqK/GWg int nFileLength = -1; yUp"%_t0 try{
/DN!" URL url = new URL(siteInfoBean.getSSiteURL()); 2C_/T8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *Z
C$DW!- httpConnection.setRequestProperty("User-Agent","NetFox"); Hlye:.$ KJ;NcUq !Au 9C
int responseCode=httpConnection.getResponseCode(); a>XlkkX if(responseCode>=400) $3Srr* { qJf=f3 processErrorCode(responseCode); :Vl2\H=P return -2; //-2 represent access is error ;Alw`' } m03]SF(#3 7z^\}& t~@~XI5 String sHeader; w*7BiZ{s< 0)T`&u3! -P7JaH/Q for(int i=1;;i++) 25CO_ { F9 q9BH //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); F1UTj"<e //Utility.log(in.readLine()); #>@~3kGg sHeader=httpConnection.getHeaderFieldKey(i); b Q6<R4 if(sHeader!=null) dyMj=e { [
bB
if(sHeader.equals("Content-Length")) Dhy@!EOS { vgvJ6$# nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); rLzN#Zoi break; xD3Y-d9 } `oUuAL } mhZ60 RW else {Mx3G*hr break; "<5su5] } 60r4%>d } =&
.KKr catch(IOException e){e.printStackTrace ();} [$[1|r
*Q catch(Exception e){e.printStackTrace ();} ^jxV `(@}O?w!1 {3{cU#\QA Utility.log(nFileLength); F1aI4H<(T %qj8*1 X=U >r return nFileLength; g<&n V>wF } -p\uW0XA N!
N>/9 G(6MLh1 //保存下载信息(文件指针位置) )r^)e4UI private void write_nPos() 4W$t28) { Fv(1A_~IS try{ vq&u19iP output = new DataOutputStream(new FileOutputStream(tmpFile)); nNJMQb'K output.writeInt(nStartPos.length); q" aUA_}\ for(int i=0;i<nStartPos.length;i++) 2IGoAt>V { 4Cl41a // output.writeLong(nPos); O)E8'Oe"Q output.writeLong(fileSplitterFetch.nStartPos); /degBL+ output.writeLong(fileSplitterFetch.nEndPos);
<B%s9Zy } .3JLa8y output.close(); xOAA1# } ~$\9T.tre2 catch(IOException e){e.printStackTrace ();} Fw!TTH6l0 catch(Exception e){e.printStackTrace ();}
E,nxv+AQ } q;<=MO/ m5/d=k0l B"rfR_B2M# //读取保存的下载信息(文件指针位置) f8c'`$O private void read_nPos() _R 6+bB$ { ySEhi_)9^ try{ Xi~%,~ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile));
2l#c?]TA int nCount = input.readInt(); YAoGVey nStartPos = new long[nCount]; f,_EPh> nEndPos = new long[nCount]; #uzp for(int i=0;i<nStartPos.length;i++) <*4BT}r,^2 { BD(Y=g nStartPos = input.readLong(); >.)m|, nEndPos = input.readLong(); :g`j
gn0 } ][IEzeI_LN input.close(); )* \N[zm } d}2$J1` catch(IOException e){e.printStackTrace ();} wG\ +C'&~ catch(Exception e){e.printStackTrace ();} Jiv%Opo/| } WE|-zo 'zg; *)x1/ wcI?. private void processErrorCode(int nErrorCode) S);SfNh%CL { )*wM
DM5q System.err.println("Error Code : " + nErrorCode); E1&9( L5 } 4%s6 d,6" p]-\\o} 7|/Ct;oO: //停止文件下载 $yA>j (k4 public void siteStop() x&kM /z?/ { ~5Cid)Q}@o bStop = true; K_" denzT+ for(int i=0;i<nStartPos.length;i++) TOe=6Z5h fileSplitterFetch.splitterStop(); /#C}1emK sBLf(Q, Mt93YD-2+ } :~Z-K\ } }CCTz0[D" //负责部分文件的抓取 d}Y\;'2, **FileSplitterFetch.java aGR!T{` */ "nzQ$E>?$ package NetFox; 9
Y-y?Y J:!m49fF p!OCF]r import java.io.*; dN%*-p( import java.net.*; Fzc8) *w 8`{)1.d5[ 'kC,pN{-> public class FileSplitterFetch extends Thread { P d"=&Az| z3bRV{{YqN nN]GO} String sURL; //File URL 1j!LK- long nStartPos; //File Snippet Start Position w I7iE4\vz long nEndPos; //File Snippet End Position 1_of;=9V int nThreadID; //Thread's ID ;tZ;C(;< boolean bDownOver = false; //Downing is over k"z ~> boolean bStop = false; //Stop identical I+4#LR3; FileAccessI fileAccessI = null; //File Access interface =G9 9U/ <U]!1 qq,#bRe public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 5!b+^UR;z { $Sx(vq6( this.sURL = sURL; /~O>He this.nStartPos = nStart; j^Vr!y this.nEndPos = nEnd; 6VsgZ"Il nThreadID = id; x/B1\U
I fileAccessI = new FileAccessI(sName,nStartPos);//定位 UK7pQt}9 } p";5J+?( 'BiR ,M$mY =Lc!L
!(,b public void run() Hrk]6* { \|gE=5!Am= while(nStartPos < nEndPos && !bStop) z[0+9=<Y { <0w"$.K#3 cR*5iqA 2:6W_[7l! try{ <y}9Twdy URL url = new URL(sURL); l
10p'9n HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); g5OKhL0u httpConnection.setRequestProperty("User-Agent","NetFox"); x%!Ea{s String sProperty = "bytes="+nStartPos+"-"; n`Y"b& httpConnection.setRequestProperty("RANGE",sProperty); _&wrA3@/L Utility.log(sProperty); Z"pCDW) [B,w\PLub l+vD`aJ 3 InputStream input = httpConnection.getInputStream(); wqnHaWd* //logResponseHead(httpConnection); 6${=N}3Kw ^vHh*Ub MP3Vo|}3 byte[] b = new byte[1024]; i!a.6Gq int nRead; )/y7Fh while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 3 i;sB { .DX-biX, nStartPos += fileAccessI.write(b,0,nRead); x@)G@'vV| //if(nThreadID == 1) 'nMj<:0wlD // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6L!/#d0 } \2c3Nsra a$AR ++=f7yu Utility.log("Thread " + nThreadID + " is over!"); %4QpDt bDownOver = true; ;}dvc7 //nPos = fileAccessI.write (b,0,nRead); s?5vJ:M
Xr } mp:xR ^5c catch(Exception e){e.printStackTrace ();} Z^[
]s1iP} } Img$D*BM }
Nt
w?~% 0z
=?}xr WR<?_X_ //打印回应的头信息 ?]AF?
0/ public void logResponseHead(HttpURLConnection con) gr^TL1( { JE*d- for(int i=1;;i++) bl3?C { $ o
} String header=con.getHeaderFieldKey(i); MtD0e@ if(header!=null) DuMzK%
//responseHeaders.put(header,httpConnection.getHeaderField(header)); (k^o[H F Utility.log(header+" : "+con.getHeaderField(header)); ,6 IKkyD else +Zg@X.z break; cFZcBiw } *8I"7'xh } )vsX (/WU <0!O'" "J YctWSfh public void splitterStop() SYd6D@^2j { xjy(f~' bStop = true; 8-PHW,1@a3 } W;T5[ Ntt*}|:QV< w$DHMpW' } t}YT+S ,x=S)t <5 } /* vk4Q2P **FileAccess.java r,HIoeAKP *//文件访问(定位,写) q"e]\Tb=we package NetFox; $3=S\jyfK import java.io.*; nCS" l5 `*ALb|4ilG )kT.3
Q public class FileAccessI implements Serializable{ {ldt/dl~ bP Q=88* //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 6E#znRi6IE RandomAccessFile oSavedFile; dSI<s^n long nPos; we/sv9v}n cSTF$62E RG.wu6Av public FileAccessI() throws IOException v{X<6^g { .%EYof this("",0); NZ"nG<;5 } r])V6 ^U 82M`sk3. SU5O+;{`' public FileAccessI(String sName,long nPos) throws IOException G1fC'6$3 { cN-$;Ent oSavedFile = new RandomAccessFile(sName,"rw"); jVPX]8 this.nPos = nPos; SJ2l6 oSavedFile.seek(nPos); al" =ld( } L++qMRk9 D&{CC kMx)G] public synchronized int write(byte[] b,int nStart,int nLen) ;pw9+zo^M { fKW)h?.Kd int n = -1; =NmW}x|n try{ mxE< oSavedFile.write(b,nStart,nLen); cgi:"y F n = nLen; b_X&>^4Dkl } ,M9e * catch(IOException e) [w90gp1O[ { v5F+@ug e.printStackTrace (); :8`~dj. } #g/m^8n?s @T Ha [|(S
LS$zA>: return n; O6ph_$nt. } [MuZ^'dR ?t5<S]'r$ UqD ]@s` } /i~x.i3 zI0d S Rk%BJ? ~ /* Ci4;e **SiteInfoBean.java H:)_;k */ @^Rl{p package NetFox; UM/!dt}DnF {;N2 &S o uM\5GK public class SiteInfoBean { .DI?-=p|_# osl\j]U8 2qot(Zs1i private String sSiteURL; //Site's URL K3Bw3j 9 private String sFilePath; //Saved File's Path e#)NYcr6 private String sFileName; //Saved File's Name P{x6e/ private int nSplitter; //Count of Splited Downloading File %Zp|1J'" !S%0#d2 1F_$[iIX] public SiteInfoBean() \,fa"^8 {//nSplitter的缺省值为5 _, E/HAX //default value of nSplitter is 5 Cs(sar:7 this("","","",5); >(-A"jf } *4e?y \1SC:gN*# i),bAU!+m public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) ap8q`a{j^ { 4l7
Ny\J sSiteURL= sURL; zn>+\ sFilePath = sPath; wBvVY3VQ^
sFileName = sName; =P%&]5ts this.nSplitter = nSpiltter; ;{aGEOP'U `U=Jbdc l3 $H)QUFyC } t.dr<
*NG\3%}%|@ b50mMWtG public String getSSiteURL() xKl1DIN[ { /z_]7] return sSiteURL; 1+gF fKq } h!ogH >S~ b8_F2 |j-ng; public void setSSiteURL(String value) $_iE^zZaU^ { 4&=</ok6`0 sSiteURL = value; JEk'2Htx } DR{O.TX 3@qv[yOE op\$(7<d- public String getSFilePath() FZ?:BX^ { yx|{:Li! return sFilePath; qDG2rFu&[ } T@=C2
1 .9J}Z^FD P6O\\,B1A public void setSFilePath(String value) 6UqAs<c9 { vJaWHC$q sFilePath = value; h=0a9vIXF } P%)r4+at .>eR X% XPU>} 4{ public String getSFileName() |1"&[ . { EG`6T return sFileName; k#zDY*kj } 9(J,&)J n|{#5# SDC'S]{ew public void setSFileName(String value) N[e,%heR { 5 ty2e`~K sFileName = value; /IG{j} } ROmmak(y8 -2; 6Pwmv 6^WNwe\ public int getNSplitter() bY2R/FNL= { 3i7EF. return nSplitter; w;gk=<_ } tc0;Ake-& q~b# ml2QS ":8\2Qp public void setNSplitter(int nCount) ]c~yMA+]FZ { Uffwzd! nSplitter = nCount; *d3-[HwZCL } 8W{M}>;[9 } [B#XA}w 9zb1t1[W mmbe.$73 /* @t~y9UfF **Utility.java 7;o:r$08&} */ S)rr package NetFox; v>#Njgo `VKFA<T b9RHsr]V public class Utility { }q`9U!v X'jyR:ut# ?a3wBy public Utility() +7}^Y}( { aWIkp5BFj Jgv Mx 7%i'F=LzT } hqvhnqQk X7huc* //线程睡眠 $C;i}q# public static void sleep(int nSecond) b^Z2Vf:k] { G;}WZy try{ D[/fs`XES Thread.sleep(nSecond); ?@9v+Am! } 6X*vCylI catch(Exception e) s|e.mZk/ { ud r\\5 e.printStackTrace (); Yi%lWbr } (|K+1R } x*7A33@i "-$}GUK?Z //日志 %-!%n=P public static void log(String sMsg) XnZ$%?$ { x.*^dM@V System.err.println(sMsg); KsP2./N } <E4(KE Tse#{ ~^1y(-cw public static void log(int sMsg) UHZ&7jfl { 5_aj]"x System.err.println(sMsg); k_,7#:+ } QQS*r}> } |@u2/U9
;[}OZt f%,S::%Ea /* D<6$@ZJ **TestMethod.java reN\|?0{ */ Xe%J{ package NetFox; IQPu%n{0v l&ueD&*4& 1 %P-X! public class TestMethod { (N9-YP?qm JB~^J5#[Oh KSPa2>lz? public TestMethod() gB'ajX=OA/ { ///xx/weblogic60b2_win.exe _d@YLd78P try{ ;
BN81; SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); |Gf<Ql_.4 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); V1]GOmXz SiteFileFetch fileFetch = new SiteFileFetch(bean); <R7{W"QTA) fileFetch.start(); Zo<)r2|O. } <a"(B*bBd catch(Exception e){e.printStackTrace ();} U3{<+vSR` Z<i}XCE v0\l~_|H } l<+[l$0# ]eKuR"ob0 CM_hN>%w[ public static void main(String[] args) :hZM$4 { ]o<]A[< new TestMethod(); Kz"3ba}KH } idYB.]Y( } ?:\/-y)Sp 点击下载更多相关资料
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