-
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
|
/* ^+I{*0{/[ **SiteFileFetch.java >%t"VpvR */ Hq OzArp3 package NetFox; Fq:BRgCE import java.io.*; zl$'W=[rFs import java.net.*; kLK}N>v}X n"*A. BTqY_9 public class SiteFileFetch extends Thread { 46sV\In>? re:=fC:t5A B\`4TU}kE SiteInfoBean siteInfoBean = null; //文件信息Bean +9M#-:qB long[] nStartPos; //开始位置 y\]:&)?&C^ long[] nEndPos; //结束位置 Bg{"{poy FileSplitterFetch[] fileSplitterFetch; //子线程对象 (X;D.s long nFileLength; //文件长度 qq
G24**9v boolean bFirst = true; //是否第一次取文件 @uApm~} boolean bStop = false; //停止标志 "6o}g. File tmpFile; //文件下载的临时信息 A@4sb
W_
DataOutputStream output; //输出到文件的输出流 f!AcBfaLr R^4JM,v9x` //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) {wVj-w=<W public SiteFileFetch(SiteInfoBean bean) throws IOException K_;'-B { < j^8L^ siteInfoBean = bean; 5=(fuY3 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); rE)lt0mkv tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); (hr*.NS# if(tmpFile.exists ()) VXX7Y?! { WKek^TW4HE bFirst = false; &?59{B.mD read_nPos(); _9*3Mr)2N } \iVb;7r)9: else [TRHcz n { O7vJ`K(! nStartPos = new long[bean.getNSplitter()]; 3
vr T` nEndPos = new long[bean.getNSplitter()]; P3Ocfpf Bp } ^N#z&oh O(pa;&" {{N*/E^ $IUe](a{d } J?DJA2o d^pzMaCI 0q}k"(9 public void run() &RF*pU> { pQ2'0u5w5 //获得文件长度 n3x<L:) //分割文件 Ry_"so w4 //实例FileSplitterFetch {_[\k^98> //启动FileSplitterFetch线程 uPh/u! //等待子线程返回 s&.VU|=VQ@ try{ #u]'3en if(bFirst) wB%N}bi! { ny++U;qi nFileLength = getFileSize(); }:SWgPfc if(nFileLength == -1) U?/C>g%/PI {
{@E(p4W System.err.println("File Length is not known!"); $e#V^dph } u/6b.hDO else if(nFileLength == -2)
7j,u&%om { D^dos`L0b System.err.println("File is not access!"); L>@:Xo@ } 3]MSS\uB else i`st'\I { &GKtD) for(int i=0;i<nStartPos.length;i++) <36z,[,kZ@ { F4:giu ht nStartPos = (long)(i*(nFileLength/nStartPos.length)); nA1059B
} HEBKRpt for(int i=0;i<nEndPos.length-1;i++) 4;;K1< 1 { glL.CkJ nEndPos = nStartPos[i+1]; JnodDH ? } ^E]Xq]vd" nEndPos[nEndPos.length-1] = nFileLength; _@] uHp| } ,Y+J.8.H } D:Rr|m0Tk <13').F %Eq4>o?D //启动子线程 |i~Ab!*8n fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; F4X0DRC,G for(int i=0;i<nStartPos.length;i++) P&kjtl68Y { Ew, 1*WK! fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), xPp\OuwK siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "o{o9.w nStartPos,nEndPos,i); (U?*Z/ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .ey=gI!x0 fileSplitterFetch.start(); ps@;Z?Q } \""sf{S9 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b~Q8&z2 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); LkK# =v // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", y/9aI/O' nEndPos = " + nFileLength); w+_pq6\V // fileSplitterFetch[nPos.length-1].start(); Ms61FmA4 q-<t'uhs[ 0D.qc8/V4. //等待子线程结束 ibj3i7G? //int count = 0; S9 VD/ //是否结束while循环 &:@)roCR boolean breakWhile = false; &)Z!A*w] :*<UCn"" jM07&o]D while(!bStop) _&U.DMt2 C { Bsc write_nPos(); 2leTEs5aK` Utility.sleep(500); OF_g0Zu breakWhile = true; _X/`7!f Z8xKg W3~xjS"h for(int i=0;i<nStartPos.length;i++) Lbwc2Q,.- { d!z}!
: if(!fileSplitterFetch.bDownOver) ?nc:B]=pTY { 'jr[
?WQ breakWhile = false; WJA0 `<~ break; -qW[.B } y(92 Th$ } lHI;fR if(breakWhile) \.l8]LH break; ze_q+Z tQYkH$e`/{ u301xc,N<z //count++; S?BI)shmg //if(count>4) 0*{2^\ // siteStop(); Op>l~{{{ } Wm#F~<$ b>]MZhLJe +5xVgIk# System.err.println("文件下载结束!"); l'm\*=3 } E,wOWs* catch(Exception e){e.printStackTrace ();} q1_iV.G< } QRFBMq}'
)/mBq#ZS P7D__hoE //获得文件长度 M9ACaf@ public long getFileSize() Gw@]w;ed { U_.9H
_G int nFileLength = -1; j.O+e|kxU try{ <Y"h2#M " URL url = new URL(siteInfoBean.getSSiteURL()); 3-6Lbe9H HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); NO'37d httpConnection.setRequestProperty("User-Agent","NetFox"); !L?diR efUa[XO L<H zPg int responseCode=httpConnection.getResponseCode(); l)K8.(2 if(responseCode>=400) -)E
nr6 { al@Hr*' processErrorCode(responseCode); b-Xc6f return -2; //-2 represent access is error 8H@] v@Z2 } mi'3ibCG #C#*yE 0hv}*NYd String sHeader; >HL$=J_K? ^jB17z[ ({!S!k for(int i=1;;i++) sp8P[W1a { Wz&[cj //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ,9YgznQ //Utility.log(in.readLine()); e754g(|>b sHeader=httpConnection.getHeaderFieldKey(i); MiN|u if(sHeader!=null) k\<8h% { @|6#]&v` if(sHeader.equals("Content-Length")) /L^pU-}Z0 { }-N4D"d4o nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); '4e,
e|r break; H63?Erh>a } aNDpCpy } ./i5VBP5 else 35 d:r: break; WWgJ !Uz } 7w5C
NV } U%V4@iz~\m catch(IOException e){e.printStackTrace ();} &1Cif$Y4w catch(Exception e){e.printStackTrace ();} b-?d(- .
ytxe!O 0@> Utility.log(nFileLength); x%`tWE| rk8Cea awU&{<,=g return nFileLength; 5a%i%+;N } 'BX
U' 1TlMB p>h}k_s //保存下载信息(文件指针位置) `dJ?j[P,p private void write_nPos() 5b$QXO { IylfMwLC try{ zT+ "Z(oz, output = new DataOutputStream(new FileOutputStream(tmpFile)); o-+H- output.writeInt(nStartPos.length); MmH(dp+ for(int i=0;i<nStartPos.length;i++) ZLlAK ?N { OMm'm\+/ // output.writeLong(nPos); (Qd@Q,@(s output.writeLong(fileSplitterFetch.nStartPos); auHP^O>4L output.writeLong(fileSplitterFetch.nEndPos); [13NhF3.P } D!rD-e output.close(); r1a/'+ } PwC^
]e catch(IOException e){e.printStackTrace ();} $E-c%- catch(Exception e){e.printStackTrace ();} 2Q)pT$ } TXbnK"XQ WQBpU?O U.c~l,5%" //读取保存的下载信息(文件指针位置) gr \vC private void read_nPos() $D;-;5[-/r { 8I<LZ{a10 try{ L8?;A9pc() DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); * TByAa{ int nCount = input.readInt(); j"9Zaq_ nStartPos = new long[nCount]; qF4=MQm\aE nEndPos = new long[nCount]; Bxk2P<d for(int i=0;i<nStartPos.length;i++) ,:pKNWY)Q { N{?Qkkgx nStartPos = input.readLong(); +^3
*Y"6Z nEndPos = input.readLong(); O#`y;% } "#]V^Rzxh input.close(); N >k,"=N/ } &Vbcwv@ catch(IOException e){e.printStackTrace ();} mhMRY9 ahB catch(Exception e){e.printStackTrace ();} D)bR-a_^ } Am=O-;
b'8 w"AO~LF B+lnxr0t private void processErrorCode(int nErrorCode) lFD/hz7lc { #Kt5+"+7 System.err.println("Error Code : " + nErrorCode);
5Eu`1f? } <^"0A bix}#M YQaL)t$0 //停止文件下载 c:,K{ZR public void siteStop() cWp5pGIzfp { _SqUPTb"u bStop = true; m-'+)lB for(int i=0;i<nStartPos.length;i++) 6B@{X^6y fileSplitterFetch.splitterStop(); m-R`( ;c|G '/@i}
digf } \"l/D?+Q } ^A$p)`KR //负责部分文件的抓取 v,Yz\onB^ **FileSplitterFetch.java 0ae}!LO */ ::!{f+Up package NetFox; U_AmRiy %-3wR@ 89[OaT_hs import java.io.*; $<d3g: import java.net.*; rNeSg=j ef]60OtP b0[H{q-z{X public class FileSplitterFetch extends Thread { ?o_D#gG* ?#VkzT )k&!& String sURL; //File URL ="s>lI-1a long nStartPos; //File Snippet Start Position |"k+j_/+ long nEndPos; //File Snippet End Position TbR!u:J int nThreadID; //Thread's ID EALgBv>#ZL boolean bDownOver = false; //Downing is over R2dCp|6A boolean bStop = false; //Stop identical kqp*o+Oz', FileAccessI fileAccessI = null; //File Access interface YE1X*'4 2qDVAq^@ NZt
8L? public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ]VHO'z\m { #B8V2_M this.sURL = sURL; 8?&!@3n this.nStartPos = nStart; XV:icY this.nEndPos = nEnd; PVX23y; nThreadID = id; (-esUOB. fileAccessI = new FileAccessI(sName,nStartPos);//定位 'Y:ZWac, } j$}W%ibj p|VgtQ/)% 1|3{.Ed public void run() m>LC2S;
f { VT5o#NR{R while(nStartPos < nEndPos && !bStop) rT28q. { !&@!:=X, ljw>[wNv h . R bdG try{ 1bpjj'2%x URL url = new URL(sURL); `T~~yM)q HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); A<P rsk! httpConnection.setRequestProperty("User-Agent","NetFox"); -`} d@x String sProperty = "bytes="+nStartPos+"-"; -+Ab[ httpConnection.setRequestProperty("RANGE",sProperty); 0Nq6>^
% Utility.log(sProperty); ~6O<5@k 8ZvozQE H\@@iK= InputStream input = httpConnection.getInputStream(); zIh`Vw ,t0 //logResponseHead(httpConnection); GsvB5i 6xAR: ;-@v1I; byte[] b = new byte[1024]; */E5<DO int nRead; 7S)u7 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) <-K'9ut, { ieG%D
HN nStartPos += fileAccessI.write(b,0,nRead); >(39K //if(nThreadID == 1) T{Y;-m // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); pG(%yIiAi } Q
R<q[@)F 9#ZR0t.cY z 2Rg`1B Utility.log("Thread " + nThreadID + " is over!"); sQ>L3F;A` bDownOver = true; Zh,{e/j //nPos = fileAccessI.write (b,0,nRead); <zh N7=" } ew{(@p+$ catch(Exception e){e.printStackTrace ();} E4dN,^_ F! } O6Jn$'os1# } =&xNdc 'Z=8no`< J'no{3Ktz //打印回应的头信息 tp3]?@0 public void logResponseHead(HttpURLConnection con) %^ z##7^ { 'k?*?XxG for(int i=1;;i++) Uel^rfE` { =w <;tb String header=con.getHeaderFieldKey(i); -k I;yL if(header!=null) A9L
{c!|- //responseHeaders.put(header,httpConnection.getHeaderField(header)); eJ
O+MurO Utility.log(header+" : "+con.getHeaderField(header)); \>@QJ else S eTn] break; %
A8dO+W } 7C"&f *lEi } p&|:,|jo5 ^B`*4 m"y_@Jk public void splitterStop() 8%W(",nd { N|53|H bStop = true; xpjv@P } heN?lmC 6o4Bf| E] (h3f$ } fce~a\y0 m^M sp:T, LWp#i8, /* 'ZboLoS*- **FileAccess.java Td"_To@jd *//文件访问(定位,写) qZz?i package NetFox; aH!2zC\:T import java.io.*; 1FfSqd \sZT[42 3+>;$ public class FileAccessI implements Serializable{ Q"+)xj v62M8r,Y //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 gcKXda( RandomAccessFile oSavedFile; XD=p:Ezh long nPos; VQ,;~^Td aUTXg60l* +i0j3. public FileAccessI() throws IOException B
!}/4" { ;Or]x?- this("",0); 4ZAnq{nR4 } PZjK6]N\ b|KlWt' 3{*nG'@Mal public FileAccessI(String sName,long nPos) throws IOException 8,DY0PGP { jf
WZLb) oSavedFile = new RandomAccessFile(sName,"rw"); <<5x"W(,
this.nPos = nPos; (+w>hCI oSavedFile.seek(nPos); W#@Mx } J+o6*t2| +IkL=/';# }S,KUH. public synchronized int write(byte[] b,int nStart,int nLen) {^jk_G\ys { zZ*\v int n = -1; CL)*cu6zG try{ 31> $;" oSavedFile.write(b,nStart,nLen); ![l`@NH[U n = nLen; 4?2$~\
x } 8EBy5X}US catch(IOException e) cq#=Vb { W~ i599!v e.printStackTrace (); w$1B|7tX;2 } snm1EPj ];63QJU Mr6 q7 return n; 8`GN8F } YM<F7tp4 fUV;3du 4Y
`=`{Q } W#sCvI@ =`W#R vZJu=t /* WTX!)H6Zv **SiteInfoBean.java $z[r(a^a */ k,0lA#> package NetFox; *\"+/ 4ynGXJmMlR tYST&5Kh~ public class SiteInfoBean { CjT]!D)s {wwkbc* >Nr~7s private String sSiteURL; //Site's URL "IuPg=|# private String sFilePath; //Saved File's Path m(rd\3d private String sFileName; //Saved File's Name x4^*YZc$, private int nSplitter; //Count of Splited Downloading File D wtvtglqV 5q 95.rw *h)|Ks public SiteInfoBean() 5ji#rIAhxh {//nSplitter的缺省值为5 sB+
B,DF //default value of nSplitter is 5 -(1GmU5v( this("","","",5); \VAm4 } w3E#v&"=Y V \Sl->: wG}Rh, public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Zy&?.d[z { /pYp,ak sSiteURL= sURL; dSPye z sFilePath = sPath; +5xk6RP sFileName = sName; r$<4_* this.nSplitter = nSpiltter; eccJt j&w4yY 56 [+;* } `Ti?hQm/ SEXmVFsQ fA" VLQE public String getSSiteURL() JSu+/rI1 { kS1?%E,)q return sSiteURL; C<yjGtVD } +LB2V3UZ WNcJ710k27 e763yd public void setSSiteURL(String value) 2e|m3 { gvCQ![ sSiteURL = value; 716r/@y$6 } aM!%EaT \SyG#.$ .
l-eJ public String getSFilePath() R}T\<6Y { tr@)zM
GB return sFilePath; s~g0VNu Y } {jOV8SVL B*&HQW *u }2.0e5[ public void setSFilePath(String value) "pTU&He { qj1Fj sFilePath = value; ?AYb@&% } Kw87 0n< M&J$9X HJ0Rcw% public String getSFileName() <gu>06 { YlJ_$Q[ return sFileName; XkEE55#>| } q:<vl^<j xV>sc;PEb nl+8C}=u public void setSFileName(String value) G6q*U, { vu|-}v?: sFileName = value; l
dw!G/ } |H&&80I
>B$J qc"PTv0q public int getNSplitter() 4`] { 6oy[0hj return nSplitter; Hd89./v`: } {4YD_$4W T07 AH }dpE> public void setNSplitter(int nCount) DSL3+%KF# { 8Az|SJ< nSplitter = nCount; 6ac_AsFK } Ws;X;7tS } ]/{iIS_ ~*hCTqHvN N4$ K{ /* L|Bjw3K&D **Utility.java L!0}&i;u~5 */ Tl L\&n.$ package NetFox; c!]Q0ib6 :Ny^-4-N Ib2n Bg>j public class Utility { Svt%*j `*y%[J,I# rAh|r}R public Utility() 52.%f+Oa { V>& 1;n 4P}d/w?'KL =+w/t9I[ } hp$1c TFDzTD //线程睡眠 ?\_vqW public static void sleep(int nSecond) }gKY_e3 { <z8z\4Hz try{ K&BaGrR Thread.sleep(nSecond); )0zg1z } vQ8$C 3 catch(Exception e) =55V<VI { qJ[wVNHh! e.printStackTrace (); ~toR)=Yv } KN'twPFq } z[l_<`J$9 ? kCo/sW //日志 \?[ m%$A public static void log(String sMsg) Q}|0 { TGuCIc0B{ System.err.println(sMsg); 85BB{T; } DaqlL R~BFZF>: R0e!b+MZ. public static void log(int sMsg) lcXo> { j-zWckT{ System.err.println(sMsg); 8i
Ew;I_ } r=# v@]zB } vHN/~k# 3`Dyrj#! `KUL4) g~ /* JPpNCC.b **TestMethod.java zS'{F>w */ Tsocc5gWZ* package NetFox; WS"v"J% ihD|e& p+V::O&&r public class TestMethod { Sg1,9[pb rBZ00} Yu:($//w public TestMethod() V o%GO9b; { ///xx/weblogic60b2_win.exe x$KQ*P~q try{ ([]\7}+8 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5);
pp()Hu3J //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); rd^j< SiteFileFetch fileFetch = new SiteFileFetch(bean); u zL|yxt fileFetch.start(); ~R7{gCqdr } - XB[2h catch(Exception e){e.printStackTrace ();} hA+;eXy/ .jl^"{@6 +'aG{/J } Pt7C/
qM/ ).jna`A,
5"w% public static void main(String[] args) iOiXo6YE { ,.V=y% new TestMethod(); :fQN_*B4@4 } }3R:7N`,| } 'Me(qpsq 点击下载更多相关资料
|