-
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
|
/* <spZ! #o **SiteFileFetch.java 5 BtX63 */ F^k.is
package NetFox; o*g|m.SjL import java.io.*; ,TJD$^ import java.net.*; 8}e,%{q w$Ot{i|$( V DS23Bo public class SiteFileFetch extends Thread { 76cG90!Z 6
sxffJt
dq1:s1 SiteInfoBean siteInfoBean = null; //文件信息Bean evA/+F,& long[] nStartPos; //开始位置 Va
VN long[] nEndPos; //结束位置 X[gn+6WB% FileSplitterFetch[] fileSplitterFetch; //子线程对象 G~7 i@Zs long nFileLength; //文件长度 WKz>
!E% boolean bFirst = true; //是否第一次取文件 bI.t<; boolean bStop = false; //停止标志 E m
6Qe File tmpFile; //文件下载的临时信息 `+:.L>5([ DataOutputStream output; //输出到文件的输出流 :,b
iyJt #@@Mxr'F //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ((tv2 public SiteFileFetch(SiteInfoBean bean) throws IOException ml|W~-6l { E{^ XlY siteInfoBean = bean; z@Q@^
&0Mr //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); p[lNy{u~M tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); XdLCbY if(tmpFile.exists ()) [[d(jV=* { ofYlR| bFirst = false; r_e7a6 read_nPos(); h_1T,f( } zA+~7;7E else hQ6a~?f { :1XtvH nStartPos = new long[bean.getNSplitter()]; ")O`mXg- nEndPos = new long[bean.getNSplitter()]; rqPFU6 } i
wxVl)QL a22Mufl P`s wn_b[tdxq } K7Rpr.p o9xlu.QL{c aLJ(?8M@ public void run() }ENR{vz$A { OO?]qZa1 //获得文件长度 +w@M~?> //分割文件 pwwH<0[ //实例FileSplitterFetch b=~i)` //启动FileSplitterFetch线程 <E\$3Ym9 //等待子线程返回 /%_OW@ ? try{ pdJ/&ufh if(bFirst) [,2|Flf
e { 2I*;A5$N1 nFileLength = getFileSize(); D]c`B if(nFileLength == -1) [mEql,x3 { !mWiYpbU+ System.err.println("File Length is not known!");
,g%&|FAP } '*\|;l#1 else if(nFileLength == -2) Z|%_oR~b| { 3~nnCR[R System.err.println("File is not access!");
/'31w9 } Ag F,aZU else 8,0YD#x { It2" x; for(int i=0;i<nStartPos.length;i++) el:9 wq { u%~igt@x nStartPos = (long)(i*(nFileLength/nStartPos.length)); @as"JAN } r}uz7}z %" for(int i=0;i<nEndPos.length-1;i++) pABs!A`N { Oft4-4$E nEndPos = nStartPos[i+1]; ]E] 2o } TLoz)&@ nEndPos[nEndPos.length-1] = nFileLength; >yY'7Ey } :1Q!$ m } detwa}h[0 {uGP&cS~( +-E~6^> //启动子线程 w`q%#qRk fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; SPp#f~%m for(int i=0;i<nStartPos.length;i++) ?_I[,N?@41 { 'uq#ai[5I fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1KjU ]
r2 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), bQ~j=\[r nStartPos,nEndPos,i); ` AY_2>7 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); qIld;v8w"g fileSplitterFetch.start(); ?JL:CBvCp } ~#kT_*sw) // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), K~22\G` siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Ot]Ru,y->+ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", V*W;OiE_3 nEndPos = " + nFileLength); b$Vz2Fzx // fileSplitterFetch[nPos.length-1].start(); W"Gkq!3u{ G#MdfKH 1x[)/@.'f //等待子线程结束 }!6\|;Qsz, //int count = 0; Uh][@35 p //是否结束while循环 Br`IW boolean breakWhile = false; 3Kn_mL3V- /{|fyKo\? cq$i while(!bStop) {l |E:>Q2 { [ :zO}r: write_nPos(); YX`7Hm, Utility.sleep(500); p1vp8p breakWhile = true; gCxAG X,LD Ntbg`LGf'! for(int i=0;i<nStartPos.length;i++) 8cA~R- { A\#iXOd if(!fileSplitterFetch.bDownOver) &8z[`JW,T { P LueVz breakWhile = false; "I
Ql Vi break; AZmb!}m+d } %?m$`9yU } Y*!qG if(breakWhile) qM.bF&&Go break; #y%!\1M/:A ^.>jGI%rB Yh>]-SCw //count++; ?yj6CL(, //if(count>4) wR^ RM(1 // siteStop(); W16,Alf: } C?2'+K ndeebXw* fXc m|U,ho System.err.println("文件下载结束!"); 65Cg]Dt71 } >Bgw}PI catch(Exception e){e.printStackTrace ();} X_7UJ
jFw" } |M+<m">E n-%s8aaVf a|?4) //获得文件长度 YiPoYlD*n< public long getFileSize() Y_QH&GZ { q5#J~n8Wr int nFileLength = -1; kP?KXT3y try{ Q*b]_0Rb URL url = new URL(siteInfoBean.getSSiteURL()); Cm\6tD HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 'UYR5Y> httpConnection.setRequestProperty("User-Agent","NetFox"); HTyLJe ?! `=X>5 9F*+YG! int responseCode=httpConnection.getResponseCode(); %b"\bHH if(responseCode>=400) z5r$M { Ck!VV2U# processErrorCode(responseCode); )lZp9O return -2; //-2 represent access is error J52
o
g4l } />9OR Iwc{R8BV
EMfdBY5 String sHeader; !H}vu]R afb+GA! J;f!!<l\ for(int i=1;;i++) uECsh2Uin { #jxe%2'Ot //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); k+DR]icv //Utility.log(in.readLine()); ]._LLSzWhg sHeader=httpConnection.getHeaderFieldKey(i); a!u
rew# if(sHeader!=null) }sOwp}FV8X { [NTtz
<i@ if(sHeader.equals("Content-Length")) (bh95X { :bC40@ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); d:i;z9b@to break; ti<;7Yb
} :G<E^<M\)^ } PK4iuU`vh else 44F`$.v96 break; ?:L:EW8 } xQp|;oW;z } 4~N[%>zJ catch(IOException e){e.printStackTrace ();} {U_$&f9s catch(Exception e){e.printStackTrace ();} 3hK#'."`N \l@,B +) T0]*{k(FR Utility.log(nFileLength); zD?K>I = Jzp#bgq}| bpxeznz return nFileLength; Y}vr>\ } Al`e/a !0dNQ[$82 +
Q6l*:<|c //保存下载信息(文件指针位置) qVs\Y3u( private void write_nPos() MXyaE~LK { d`(@_czdF try{ gc?#pP output = new DataOutputStream(new FileOutputStream(tmpFile)); _IdRF5<4 output.writeInt(nStartPos.length); p}<w#p
| for(int i=0;i<nStartPos.length;i++) d%0~c'D8a { r]0
lo- // output.writeLong(nPos); YX_gb/A output.writeLong(fileSplitterFetch.nStartPos); 7k( Kq5w. output.writeLong(fileSplitterFetch.nEndPos); UDL
RCS8i } 5P'p2x#U output.close(); ScSZGs 5& } "hy.GWF|* catch(IOException e){e.printStackTrace ();} W
mm4hkf catch(Exception e){e.printStackTrace ();} Z?O*'#yn } WsDM{1c np4+" {H{X[p8 //读取保存的下载信息(文件指针位置) A=j0On private void read_nPos() LB.co4 { ?Q72 ;/$ try{ {Ions~cO) DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Tdc3_<1 int nCount = input.readInt(); _Um d nStartPos = new long[nCount]; {$1J=JbE nEndPos = new long[nCount]; G\a8B#hg for(int i=0;i<nStartPos.length;i++) ez9q7SpA { L-9~uM3@\ nStartPos = input.readLong(); A%2:E^k(s nEndPos = input.readLong(); +GAf O0 } \t|M-%&)4 input.close(); 1*
]Ev }
PTS]7 catch(IOException e){e.printStackTrace ();} aBzszp]l+ catch(Exception e){e.printStackTrace ();} c1xrn4f@a } [JaS??ig wWXD\{Hk @;?T~^nGj private void processErrorCode(int nErrorCode) k'PQ}
,Vb { W@2vjz System.err.println("Error Code : " + nErrorCode); -`Y:~q1 } SZ_V^UX_ BJS-Jy$- &ciN@nJ|$z //停止文件下载 U/NBFc:[y: public void siteStop() O$ HBO { 4R8G&8b bStop = true; emW:C-/h/@ for(int i=0;i<nStartPos.length;i++) j.:h5Y^N fileSplitterFetch.splitterStop(); dr<<! q / RJeSi`19T) "+uNmUUnm } Y+qQI MZ } dz[
bm<T7 //负责部分文件的抓取 }!i` 0p **FileSplitterFetch.java Em7 WDu0 */ y3<Y?M4 package NetFox; F6hmku>\1 4"=Vq5 LG]3hz9^9 import java.io.*; 9,]5v+ import java.net.*; ejXMKPE; V|>oGtt7 A%\tiZe public class FileSplitterFetch extends Thread { BN,>&1I
Z"s|]K " $t-n'Qh^2 String sURL; //File URL $c&0F, long nStartPos; //File Snippet Start Position G9g6.8*& long nEndPos; //File Snippet End Position ^ZTGJ(j7~ int nThreadID; //Thread's ID 0qFH
s boolean bDownOver = false; //Downing is over 4ujvD ^ boolean bStop = false; //Stop identical l =IeJh FileAccessI fileAccessI = null; //File Access interface l?*r5[O>n 2-0$FQ@/ 5y4u5Tm-% public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException s:y
^_W)d { X%9*O[6{ this.sURL = sURL; b.2J]6G
this.nStartPos = nStart; pe&UQ C^ this.nEndPos = nEnd; e1q"AOV 6 nThreadID = id; +[. Yy fileAccessI = new FileAccessI(sName,nStartPos);//定位 ;pRcVL_4 } $WW)bP
d4^ B
?%L C+NF9N public void run() )fU(AXSP { 8n?kZY$, while(nStartPos < nEndPos && !bStop) %"A_!<n@*` { )yxT+g2! dv
N<5~ 'q%%m/,VPQ try{ ?PPZp6A3L= URL url = new URL(sURL); tu%[p 4
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #NRh\Wj| httpConnection.setRequestProperty("User-Agent","NetFox"); <Mf*l)%* String sProperty = "bytes="+nStartPos+"-"; gmSQcN) httpConnection.setRequestProperty("RANGE",sProperty); Wf>^bFb"$ Utility.log(sProperty); +'03>!V mxqG-*ch- #%S0PL"x U InputStream input = httpConnection.getInputStream(); Q* O<@ //logResponseHead(httpConnection); X,v4d~>] +3^NaY`Y ]re'LC!d byte[] b = new byte[1024]; %"Db? int nRead; XrN- 2HTV while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) m s~8QL { Ttv9"z nStartPos += fileAccessI.write(b,0,nRead); C9KWa*3 //if(nThreadID == 1) ]HvZ$ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); !Ua&0s% } E20 :uZ7\ Dl;d33 &2.+Igo|G Utility.log("Thread " + nThreadID + " is over!"); F,v7ifo#f bDownOver = true; p#H]\P' //nPos = fileAccessI.write (b,0,nRead); ]h~o],: } 93w~.p catch(Exception e){e.printStackTrace ();} *_)E6Y?9 }
^Omfe } n,KA&)/s l_+A5Xy <TjBd1 //打印回应的头信息 ^Rmoz1d public void logResponseHead(HttpURLConnection con) eoJ]4-WFq { S;}qLjT for(int i=1;;i++) ac6*v49 { .[f;(WR String header=con.getHeaderFieldKey(i); J E)J<9gf if(header!=null) oCJbkt= //responseHeaders.put(header,httpConnection.getHeaderField(header)); RG?MRxC Utility.log(header+" : "+con.getHeaderField(header)); K+mU_+KRp else /2h][zrZ[. break; 2z-$zB<vyw } u33zceE8 } ;c)! @GoA .;slrg(5F ^K*-G@B public void splitterStop() 8_iHVc;< { !`C%Fkq bStop = true;
^Fp=y,D } |#cAsf_{ m0Z7N5v) #HDesen } [|<EDR {_as!5l )l{A{f6O /* -aN":?8(G **FileAccess.java qvTJ>FILT *//文件访问(定位,写) `]hCUaV package NetFox; lEa W7j import java.io.*; R.UumBM \^m.dIPdO +3HPA#A public class FileAccessI implements Serializable{ 5U;nhDmM .~22^k //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 2*YP"Ryh RandomAccessFile oSavedFile; zP|*(* long nPos; *JS"(. '( kc|>Q7~{ ^Yr|K public FileAccessI() throws IOException H8<m9zDvl { xBt<Yt" this("",0); EaCZx } H-m`Dh5{ F_ _H(}d s79q5 public FileAccessI(String sName,long nPos) throws IOException sM0c#YK? { 4UazD_`' oSavedFile = new RandomAccessFile(sName,"rw"); `:R-[>5P8 this.nPos = nPos; UCn.t oSavedFile.seek(nPos); fX""xTNPi } -D;lS
6 &EGY+p|2Y @F~0p5I public synchronized int write(byte[] b,int nStart,int nLen) BQuRHi IV { SUo^c1)G int n = -1; )I?RMR try{ xV?*!m$V%R oSavedFile.write(b,nStart,nLen); V!H(;Tuuo n = nLen; >]^>gUmq } FE>3 D1\ catch(IOException e) *|@+rbjVC { 2[XltjO e.printStackTrace (); v^;-@ddr } CN-4- Wf_CR( QZ?O;K1|y return n; S\}?zlV } zU=YNrn Jm%mm SYK +_P8'e%Iy } TS/Cp{ @pTD{OW? aX:#'eDB /* `D4oAx d9 **SiteInfoBean.java omNpE_ */ 9/FG,9 package NetFox; E`Q;DlXv> H\ {E%7^h- poTl|y @ public class SiteInfoBean { te4F"SEf Nvi Fq GJ.kkTMT private String sSiteURL; //Site's URL sg+ZQDF{x private String sFilePath; //Saved File's Path @Q/x&BV private String sFileName; //Saved File's Name mx:J>SPA8 private int nSplitter; //Count of Splited Downloading File R|nEd/'< 83\o( bl$+8!~ public SiteInfoBean() s*aH`M7^0
{//nSplitter的缺省值为5 f37ji //default value of nSplitter is 5 y;zt_O/ this("","","",5); F_ ,L2J } J'I1,5( R.91v4J JmnBq<&,0 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 6F@zCv"w { $&ex\_W sSiteURL= sURL; ^2C0oX sFilePath = sPath; q"{Up sFileName = sName; oq=?i%'> this.nSplitter = nSpiltter; BM|-GErE jl;kcGE |h#DL$ } = 4BLc 73'U#@g6 *37LN public String getSSiteURL() ,[Dh2fPM, { WF+bN#YJ return sSiteURL; R88(dEK } 4RK.Il*d ${jA+L<J ?l)}E public void setSSiteURL(String value) dNR7e { 2E@C0Ha L sSiteURL = value; c%q}"Y0oh } ?&whE! _7-"VoX :pA=V public String getSFilePath() Y|hzF:ll { &Iv\jhq
return sFilePath; fK)ZJ_?w,@ } ZTQ$Ol+{q hN>('S-cq [(D}%+2 public void setSFilePath(String value) t-v^-# { (hhdbf sFilePath = value; #U?EOm } gE-w]/1zD5 "@c';".| H3
A]m~=3 public String getSFileName() *eJhd w* { ;a!h.8UJPI return sFileName; %4|n-`: } 2.HZ+1 USnD7I/b *3w/`R<\ public void setSFileName(String value) ,wry u|7"$ { ;55tf
l sFileName = value; F8|5_214' } g( @$uJ u7WTSL% wzNt c)~i public int getNSplitter() Xa? 6# { :=iM$_tp' return nSplitter; h-?q6O/| } 2;Y@3d:z %#S "~) "lv:hz public void setNSplitter(int nCount) Ru
vG1" { dCoi>PO nSplitter = nCount; v2Qc}o } ])$."g } >'2w\Uk~: t]u(jX) m>Z\
rqOK /* 8Y{}p[UFT **Utility.java ^;Hi/KvM\ */ !"Oj$c
- package NetFox; Dvq*XI5 )L(d$N=Bd !F7EAQn{( public class Utility { \ ]kb&Qw [FAOp@7W }]39
iK`w public Utility() >DL-Q\U { iZkW+5( <mo^Y k3 [A%e6 } u':0"5} 11@2 ;vw //线程睡眠 ?ck^? p7 public static void sleep(int nSecond) D|Ih e%w- { ;@7#w try{ o trTrh Thread.sleep(nSecond); zZ+LisS s& } |bG [TOa catch(Exception e) z)<pqN { 2=/g~rp* e.printStackTrace (); ]/VIff } [y=$2 } "- j@GCme tEWj}rX //日志 9a~BAH,j public static void log(String sMsg) 9tc@
{ R0YC:rAt System.err.println(sMsg); &PQ{e8w } Vg [5bJ5 EhP&L?EL RP@idz public static void log(int sMsg) xU\:Vid+A { 48&KdbGX System.err.println(sMsg); 1(;33),P8 } ++{+
#s6 } [>Kxm sm&rR=b |_xiG~ /* &A5[C{x **TestMethod.java y1"^S */ #u=O 5%. package NetFox; .&yWHdQC: |z7Crz u,SX`6% public class TestMethod { P2:Q+j:PX ?xTeio44 M"$RtS|h public TestMethod() q!oZ; $ { ///xx/weblogic60b2_win.exe @
H`QLm try{ R?9Plzt5 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); e/ % ; //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); kFa?q}47 SiteFileFetch fileFetch = new SiteFileFetch(bean); x#gmliF fileFetch.start(); J%[N- } .HyiPx3^ catch(Exception e){e.printStackTrace ();} .
;@)5" ,l?76g a3
_0F@I } a5~C:EU0 :ktX7p~ ]jY)M<:J4 public static void main(String[] args) y`@4n.Q { ieF 0<'iF new TestMethod(); j83Y'VJJC } 'nDT.i } r|F,\fF 点击下载更多相关资料
|