-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* Xr2J:1pgg **SiteFileFetch.java 3Vu8F" */ -~'kP /E^ package NetFox; a97Csxf;7 import java.io.*; ^@ UjQ9[> import java.net.*; <t6d)mJ% m9g^ -X =n
}Yqny public class SiteFileFetch extends Thread { W}k[slqZA ~\bHfiIDy Fhi5LhWe+. SiteInfoBean siteInfoBean = null; //文件信息Bean `Y\QUj long[] nStartPos; //开始位置 N K"%DU< long[] nEndPos; //结束位置 LO>8 j: FileSplitterFetch[] fileSplitterFetch; //子线程对象 !>|`ly$6 long nFileLength; //文件长度 14u^[M"U boolean bFirst = true; //是否第一次取文件 iJ*%dio boolean bStop = false; //停止标志 ./!KE"! File tmpFile; //文件下载的临时信息 ^=#!D[xj> DataOutputStream output; //输出到文件的输出流 q/J3cXa{K (v|`LmV //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) g!5#,kJM public SiteFileFetch(SiteInfoBean bean) throws IOException o?=fhc { cV(H<"I siteInfoBean = bean; ]84YvpfW //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 7`+UB>8 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); -~0'a if(tmpFile.exists ()) GsRt5?X/* { a?\ `
bFirst = false; \"bLE0~ read_nPos(); }JJ::*W2n } T;%+ ]:w< else %rFllb7 { ?7 X3P nStartPos = new long[bean.getNSplitter()]; .)nCOwR6p nEndPos = new long[bean.getNSplitter()]; ;l#?SYY } U*xxrt/On/ dff#{ :9O|l)N)W= o7QK8# } tQ6| PV -sD:+Te [sptU3,2U public void run() :`j"Sj!t3 { $WM8tF?H //获得文件长度 `bi
k/o=% //分割文件 2q$X>ImI$ //实例FileSplitterFetch :!hk~#yvJ9 //启动FileSplitterFetch线程 DMRs}Yz6 //等待子线程返回 zPA>af~Ej try{ uyvs kz\ if(bFirst) l85CJ+rg { @hBx,`H^ nFileLength = getFileSize(); {8W |W2o$! if(nFileLength == -1) ~vkud+r { n_ OUWvs System.err.println("File Length is not known!"); ` C ?a } 34]%d<;A else if(nFileLength == -2) _]Z$YM { 1(D1}fcul System.err.println("File is not access!"); i|[S5QXCh } fV v$K& else 6.vNe { ?~]>H A: for(int i=0;i<nStartPos.length;i++) }"g@E-]N { ;S{ZC5 nStartPos = (long)(i*(nFileLength/nStartPos.length)); q
w"e0q% ) } J~:kuf21 for(int i=0;i<nEndPos.length-1;i++) 2%*|fF}I { :nTkg[49pJ nEndPos = nStartPos[i+1]; )8\Z=uC } C=M? nEndPos[nEndPos.length-1] = nFileLength; FJ nG<5Rh } l!Nvn$hm } AZ}%MA;q /}[zA@ o(BYT9|.kw //启动子线程 7?*~oVZW fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; wP+'04H0 for(int i=0;i<nStartPos.length;i++) 8HB?=a2Q<' { _6|
/P7" fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), s-y'<(ll siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), z, :+Oc nStartPos,nEndPos,i); I(F1S,7 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); L'zdsa}Et fileSplitterFetch.start(); QZ_nQ3K } Ynv 9v\n| // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,[+ZjAyG}# siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); g(M(Hn7
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", \q|e8k4p nEndPos = " + nFileLength); [UUM^!1 // fileSplitterFetch[nPos.length-1].start(); >V3W>5 X 2I9{+>k 3Ro7M=] //等待子线程结束 #{.pQi}) //int count = 0; =#J9 //是否结束while循环 h%4~0 boolean breakWhile = false; ^2(";.m Ykx&6M@t D}3cW2!9 while(!bStop) wpJ^}+kF { ^2P;CAjj-
write_nPos(); 2-/YYe;C Utility.sleep(500); 5LnB]dW breakWhile = true; Qq6%53 m mw)C" t(Cq(.u`: for(int i=0;i<nStartPos.length;i++) !:`Ra { a'(lVZA; if(!fileSplitterFetch.bDownOver) C&qDvvk { gqKC 4'G0 breakWhile = false; 1mkQ"E4 break; zcbA) } 9;'>\ImI } jFK9?cLT if(breakWhile) uT@8 _9 break; E}E7VQjM !dYX2!lvT %6vMpB`g //count++; EC:x,i //if(count>4) _~(MA-l // siteStop(); kY0g}o'< } AF07KA# S<)RVm,!e $]`'Mi System.err.println("文件下载结束!"); 6-Vl#Lyb } Ra*k catch(Exception e){e.printStackTrace ();} S@l
a.0HDA } &St~!y6M? ueS[sN! cviN$oL //获得文件长度 F\YcSDM public long getFileSize() cPa 0n4 { ACMpm~C8Gu int nFileLength = -1; 8O}A/*1FJ try{ -+Awm{X_@ URL url = new URL(siteInfoBean.getSSiteURL()); +$an*k9 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 5Od(J5` httpConnection.setRequestProperty("User-Agent","NetFox"); Qg86XU%l ;Ln7_ ph5xW<VNP int responseCode=httpConnection.getResponseCode(); {jCu9 ]c! if(responseCode>=400) B_6v'=7] {
vf/$`IJ processErrorCode(responseCode); 6='_+{
return -2; //-2 represent access is error tleK(^ } 7m@^=w Z"PDOwj5 K{7S String sHeader; )x5$io
"m\UqQGX 3IRRFIiO for(int i=1;;i++) cC(ubUR { FK/ro91L //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9x
6ca //Utility.log(in.readLine()); 1Tts3O. sHeader=httpConnection.getHeaderFieldKey(i); yQQDGFTb!= if(sHeader!=null) n=Z[w5 { CgPZvB[ if(sHeader.equals("Content-Length")) :@z5& h { *X=f nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); M<|~MR break; PK|`}z9 } Z-;uzx } n?ZH2dI\0 else :[ZC-hc\ break; h-)A?%Xt } J 6d n~nPK } @a7(*<". catch(IOException e){e.printStackTrace ();} K:Xrfn{s catch(Exception e){e.printStackTrace ();} Rh-8//&vZ/ qS[p|*BL Qe=Q8cT Utility.log(nFileLength); n3@g{4~ (B~V:Yt VHY<(4@ return nFileLength; vGMOXbq4& } OYRR'X.E vN6]6nUOiT ~Hs]} Xo //保存下载信息(文件指针位置) h0EGhJs private void write_nPos() m6ZbYF-7W { ZJJl944 try{ ,uD*FSp> output = new DataOutputStream(new FileOutputStream(tmpFile)); G5e Ls output.writeInt(nStartPos.length); v!v0,?b* for(int i=0;i<nStartPos.length;i++) B}xo|:f!zj { @_weMz8} // output.writeLong(nPos); yK2*~T,6@ output.writeLong(fileSplitterFetch.nStartPos); 7{/:, output.writeLong(fileSplitterFetch.nEndPos); rF
j)5~ } u=UM^C! output.close(); *R~(:z>> } E0?\DvA catch(IOException e){e.printStackTrace ();} do?n /<@o catch(Exception e){e.printStackTrace ();} R?e7#HsJ } MBTt'6M Exo`Z`m`U HjY-b*B //读取保存的下载信息(文件指针位置) 7g<`wLAH private void read_nPos() DEeL48{R { xo"4mbTV try{ 5Vm}<8{ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); QCY{D@7T int nCount = input.readInt(); !A<XqzV] nStartPos = new long[nCount]; NS/L! "g nEndPos = new long[nCount]; nO7o7bc for(int i=0;i<nStartPos.length;i++) D+U/ ]sW { y&I|m nStartPos = input.readLong(); X52jqXjg nEndPos = input.readLong(); 4lKbw4[a } Gw\HL input.close(); r.G/f{=<@ } v'~nABYH catch(IOException e){e.printStackTrace ();} a0j.\g catch(Exception e){e.printStackTrace ();} U;A5-|C } {q>4:lsS Vv"wf;# $.]t1e7s private void processErrorCode(int nErrorCode) ,,j=RG_ { )A+j System.err.println("Error Code : " + nErrorCode); s^X/
Om } vi.AzO D]`B;aE>A* bb_jD^ //停止文件下载 OcS`Fxs public void siteStop() 6V?&hq&t { |JQP7z6j] bStop = true; XGl13@=O for(int i=0;i<nStartPos.length;i++) 8'\,&f`Y fileSplitterFetch.splitterStop(); e/#&5ISk ?GfA;O (pK4i5lT } ?m7" G) } Tb6x@MorP //负责部分文件的抓取 "._WdY[ **FileSplitterFetch.java +Y^F>/ 4=Y */ ^znv[ package NetFox; `; %aQR 3\.)y49,1 fQA)r import java.io.*; vl(v1[pU import java.net.*; t-'GRme E4@fP]R+ !eoec2h#5 public class FileSplitterFetch extends Thread { v#2qwd3x (_5+`YsV !3v"7l{LF String sURL; //File URL snNg:rTL long nStartPos; //File Snippet Start Position U)1qsUDF long nEndPos; //File Snippet End Position P87Fg int nThreadID; //Thread's ID {OoNhN9 boolean bDownOver = false; //Downing is over toZI.cSg4 boolean bStop = false; //Stop identical M<m64{m1 FileAccessI fileAccessI = null; //File Access interface F+9`G[ )H,<i{80c M!DoR6 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException C$;s+ALy[ { !VTS
$nJ4 this.sURL = sURL; H 6<@ this.nStartPos = nStart; 5j01Mx
A this.nEndPos = nEnd; |MrH@v7S nThreadID = id; DL!s)5!M fileAccessI = new FileAccessI(sName,nStartPos);//定位 LZ]pyoi } 07Cuoqt2 z ate%y P(+ar#,G public void run() x=+I8Q4: { k<hO9;#qpL while(nStartPos < nEndPos && !bStop) I~6 ;9TlQ { 6oBt<r?CJ <aD+Ki6 s'=]a-l~ try{ .Vjpkt:H URL url = new URL(sURL); ZKTBjOa]* HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $iJ
#%&D httpConnection.setRequestProperty("User-Agent","NetFox"); ,$[lOFs String sProperty = "bytes="+nStartPos+"-"; >2a#|_-T httpConnection.setRequestProperty("RANGE",sProperty); &4iIzw` Utility.log(sProperty); /VZU3p<~ iW$i%`> Dv{AZyqe InputStream input = httpConnection.getInputStream(); P#1y //logResponseHead(httpConnection); V$D
d 7 nu-wQr HJrg byte[] b = new byte[1024]; y>18)8 int nRead; ;BvWU\! while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) /qze { .}>[Kr nStartPos += fileAccessI.write(b,0,nRead); >Cc$ P //if(nThreadID == 1) /bk} J:QRg // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); NFPkK?+ } t!N>0]:mo 39eoL;O_ Wm_-T]#_ Utility.log("Thread " + nThreadID + " is over!"); ^O"`.2O1 bDownOver = true; `Yve
//nPos = fileAccessI.write (b,0,nRead); 4D$E } Q+N @j]' catch(Exception e){e.printStackTrace ();} Y" |U$ } w$HC! } w]XBq~KO k/Q]Ke kS!*kk*a //打印回应的头信息 % m$Mnx public void logResponseHead(HttpURLConnection con) PrxXL/6 { 5%/%i}e~( for(int i=1;;i++) 2ARh-zLb { 3Mt6iZW String header=con.getHeaderFieldKey(i); a$A
S?`L if(header!=null) t|_g O!w8 //responseHeaders.put(header,httpConnection.getHeaderField(header)); h|Qh/jCX Utility.log(header+" : "+con.getHeaderField(header)); D=]P9XDvb. else 7.-|3Wcg break; Ce emR>\t } ~8E
rl3=5{ } T]k@g_ r|8..Ll ``D-pnKK public void splitterStop() tzPe*|m< { Hqv(X=6E0 bStop = true; ]F!,Jx } d4tVK0
~ $>Do&TU
<L0_<T } iLei-\w6y vzPrG%Uu7g -K4RQ{=>UZ /* >ZWm0nTr **FileAccess.java ='azVw%_ *//文件访问(定位,写) )JON&~C package NetFox; J3v uh# import java.io.*; +(T,d ]o] :}cAq/ EY(4<;) public class FileAccessI implements Serializable{ NKN!X/P Ns{4BM6j //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 4BX*-t RandomAccessFile oSavedFile; cA,xf@itp long nPos; ,0O!w>u_]J lU3wIB u5,<.#EVY public FileAccessI() throws IOException Q}]un]]Zt { &3MHe$ this("",0); f.WtD`Oas } p+Xz9A" -i4gzak R8_qZ;t:z public FileAccessI(String sName,long nPos) throws IOException !+U.)u9 ' { na>B{6 oSavedFile = new RandomAccessFile(sName,"rw"); YjT
#^AH this.nPos = nPos; >"b"K{t oSavedFile.seek(nPos); O4{&B@! } O1PdM52 "wc $'7M 7O j9~3o4 public synchronized int write(byte[] b,int nStart,int nLen) z;)% i f6 { p w8'+FX int n = -1; a?dM8zAnc try{ LBzpaLd oSavedFile.write(b,nStart,nLen); X^`ld&^*({ n = nLen; K7U<~f$OiN } qW9|&GuZ$ catch(IOException e) gKnAw+u\ { _*_zyWW_j e.printStackTrace (); uxBk7E%6 } t+
@F"[j /TdTo@ :Wln$L$ return n; =KMck=#B } 3)sqAs( 9;jfg|x1[ -HOCxR } Z|.z~53; 1*5n}cU~ fw5AZvE6$ /* 3!I8J:GZ: **SiteInfoBean.java l[gL(p"W */ 5|Uub, package NetFox; iw%DQ }$ | e+m!G1G 15B$Sp!/`e public class SiteInfoBean { ZD*>i=S g`6S*&8I K%;O$
> private String sSiteURL; //Site's URL !zeBxR$&o private String sFilePath; //Saved File's Path ^^Y0 \3. private String sFileName; //Saved File's Name H74hv`G9 private int nSplitter; //Count of Splited Downloading File x&sF_<[ ({)_[dJ' q
/#O :Q public SiteInfoBean() $O[ut. {//nSplitter的缺省值为5 M30_b8[Y_ //default value of nSplitter is 5 w
^A0l.{ this("","","",5); M9M EQK } e.Ii@< @{j-B
IRZ0 ?r/7: public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) lD(d9GVm{z { fK[9<"PC0 sSiteURL= sURL;
:geXplTx sFilePath = sPath; g&"Nr aQM9 sFileName = sName; E:7vm@+ this.nSplitter = nSpiltter; g
wk\[I`;
*J6qL! [" E-RbFTVBA } 0pu'K)Rb :]x)lP(3E dX<UruPA public String getSSiteURL() (7"qT^s3 { i"r=b%;; return sSiteURL; 7+ c?eH } G|o-C:~ &" b0`&l Lbd_L public void setSSiteURL(String value) G"'DoP7p9 { PRs[:we~~ sSiteURL = value; A!NT 2YdHZ } C~
>'pS6%5 -Z:al\e<g 371E S4 public String getSFilePath() &c A?|(7- { u*"tZ+|m return sFilePath; yfV{2[8ux } gxJ(u{2 Q_ $AGF hcej?W8j public void setSFilePath(String value) i;)88 { 1r@v
\#P sFilePath = value; !
$n^Ze2 ! } h~dM*yo; -WEiY 1wwhTek public String getSFileName() U5Rzfm4 { }D0j%~&"e return sFileName; K^Xg^9 } WS;3a}u F
M`pPx n6oVx5/ public void setSFileName(String value) |ek*wo { e&E*$G@.7 sFileName = value; qWo|LpxWt } DD;PmIW Vb/J` |GIT{_JE public int getNSplitter() #*w$JH { X]`\NNx return nSplitter; 5^pQ=Sgt } eK]GyY/Y Z$2mVRS`c )M1.>?b public void setNSplitter(int nCount) K":-zS { XfB;^y=u8 nSplitter = nCount; 2 !{P< } .3$iOMCH } IN_GL18^MV #E>f.:) |i1z47jN6P /* UUX
_x?BD **Utility.java s*rtm */ DT_012z package NetFox; x!S8' 10*U2FY)] Rnj2Q!C2 public class Utility { =_=jXWOQv H3MT.Cpd 1w?X~VZAX public Utility() ZSxKk6n}J { !iITX,'8 5PdC4vI*+ vVE^Y } `lr\V;o! Jg^tr>I~ //线程睡眠 SxMh ' public static void sleep(int nSecond) I#9A\.pO { g=a-zg9LX try{ ""TRLs!:M Thread.sleep(nSecond); h%#@Xd>. } v)BUt,A catch(Exception e) I9B B<~4o { Bojm lVg e.printStackTrace (); r)ga{Nn,. } sd
Z=3) } obUh+9K `4XfT.9GT //日志 k5W5 9tz public static void log(String sMsg) uPb9j;Q? { s|dL.@0,L System.err.println(sMsg);
RtK/bUa } VM|8HR7U rY88xh^ PLwa!j public static void log(int sMsg) ?DM-C5$ { dDAdZxd System.err.println(sMsg); cND2(<jx: } Wu%;{y~#} } (,HAOs
}?"f#bI Z$Qlr:7 /* wHdq :,0-! **TestMethod.java bMf+/n */ ;v#~o* package NetFox; k:R9wo LKztGfy Q-BciBh$ public class TestMethod { Ywlym\
[+ =v1s@5;~ R>#T{<<L public TestMethod() t:$p8qR { ///xx/weblogic60b2_win.exe t4h5R try{ H<dm;cU SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); j @sd x)1+ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 7vgz=-
MZ# SiteFileFetch fileFetch = new SiteFileFetch(bean); dEns|r fileFetch.start(); si0jXue~j\ } }4\>q$8' catch(Exception e){e.printStackTrace ();} X=_N7! ;\(wJ{u?Y \Ui8Sgeei } v:<u0B-)$ j =[Td (~,Q-w" public static void main(String[] args) D6c4tA^EO { 8V.x%T new TestMethod(); 4e1Zyi! } rQ.j$U } O zY&^:> 点击下载更多相关资料
|