-
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
|
/* GF'f[F6oI **SiteFileFetch.java #-{N
Ws\ */ qBYg[K> package NetFox; H-,TS^W import java.io.*; Iyyo3awc import java.net.*; 0/Z
!5-. IE;\7r+h Qs l80~n_7 public class SiteFileFetch extends Thread { Q_]~0PoH Ux}W&K/?' q>-R3HB SiteInfoBean siteInfoBean = null; //文件信息Bean rLzW` long[] nStartPos; //开始位置 PO o%^'( long[] nEndPos; //结束位置 fQU{SjG FileSplitterFetch[] fileSplitterFetch; //子线程对象 tuxRVV8l long nFileLength; //文件长度 v L}T~_=3 boolean bFirst = true; //是否第一次取文件 tuLH}tkNY boolean bStop = false; //停止标志 3+(z_!Qh File tmpFile; //文件下载的临时信息 @7W?8 DataOutputStream output; //输出到文件的输出流 qSTW b% rslvsS: //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) jXp. qK\" public SiteFileFetch(SiteInfoBean bean) throws IOException <bUXC@3W { @?Zf-. siteInfoBean = bean; q@l(Qol //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); m[:K"lZ
]2 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ]-:6T0JuS if(tmpFile.exists ()) w2OsLi Sv { OCNPi4 bFirst = false; BvK QlT read_nPos(); I9&lO/c0 } I\zemW! else E^wyD-ii/ { 3v1 7" nStartPos = new long[bean.getNSplitter()]; Svw<XJ nEndPos = new long[bean.getNSplitter()]; W`M6J}oG } ,mKObMu yMxTfR H)>sTST( f%XJ;y\,9H } W~ruN4q. P!e= b-T m Ni2b*k public void run() 6kR\xP]Kr { SK
R1E];4 //获得文件长度 #jA) >z\Q^ //分割文件 1e}8LH7 //实例FileSplitterFetch 0<.RA%dj //启动FileSplitterFetch线程 opp!0:jS* //等待子线程返回 .Djta|puu try{ sgAzL if(bFirst) zN!j%T.e
{ BStk&b nFileLength = getFileSize(); Qxa{UQh}9 if(nFileLength == -1) D4Etl5k { |PP.<ce\- System.err.println("File Length is not known!"); N3%*7{X
9 } q0./O|Dj else if(nFileLength == -2) ss
iok LE { V.=lGhi System.err.println("File is not access!"); b>11h } O0huqF$K else iw\%h9 { LFf`K)q for(int i=0;i<nStartPos.length;i++) QyGnDomQ { <9eu1^g nStartPos = (long)(i*(nFileLength/nStartPos.length)); zT#`qCbT'J } :]WqfR)# for(int i=0;i<nEndPos.length-1;i++) 0*F}o)n/m { sKL:p3r nEndPos = nStartPos[i+1]; R_N:#K.M } Y;
).+si nEndPos[nEndPos.length-1] = nFileLength; s_Wyh
!@M } `u
XQ z7 } wtH~-xSB| qCPmbg %d;ezY '2 //启动子线程 (sTuG} fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; %,UPJn for(int i=0;i<nStartPos.length;i++) Vf $Dnu@}z { T
.n4TmF fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1^G{tlA- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ,[!LCXp nStartPos,nEndPos,i); rs;r
$ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); P_Hv%g fileSplitterFetch.start(); ig!7BxM)<h } d~9!,6XM // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0
n
vSvk siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1G^#q,%X_v // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Um.qRZ? nEndPos = " + nFileLength); ae+*=, // fileSplitterFetch[nPos.length-1].start(); {38bv.3' o{WyQ&2N n<7q`tM# //等待子线程结束 F]+~x/! //int count = 0; j/!H$0PN //是否结束while循环 q(IQa@$SR boolean breakWhile = false; @n+=vC.xO ?cy4&]s @It>*B yB. while(!bStop) &
E}mX]t { z=Cr7- write_nPos(); `[fxyg:u Utility.sleep(500); .uz|/Zy breakWhile = true; h6D^G5i |>
enp> ~d
>W?A for(int i=0;i<nStartPos.length;i++) quxdG>8 { * ?Jz2[B if(!fileSplitterFetch.bDownOver) r@G#[.*A> { CH#k(sy breakWhile = false; f 2YLk break; b Bc- ^ } c1XX~8 } f!_
ctp if(breakWhile) 5*-3?
<)e break; 7^6uG6 K9Hqq7"% fS&6 //count++; X[yNFW}S2W //if(count>4) 6<76H // siteStop(); ~NcQ1. } aM3gRp51cj BMyzjteS+ S.*~C0" System.err.println("文件下载结束!"); K%5"u' } e^1uVN catch(Exception e){e.printStackTrace ();} |a^U] } \}0-^(9zd f58?5(Dc| 4,p;Km& //获得文件长度 V ~{fB~ public long getFileSize() DGESba\2+ { ;q>9W,jy int nFileLength = -1; V^s0fWa try{ gb|Q%LS9R URL url = new URL(siteInfoBean.getSSiteURL()); =n(3o$r( HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); WYcA8X/ httpConnection.setRequestProperty("User-Agent","NetFox"); 5e8AmY8; nw:-J1kWR #'baPqdO int responseCode=httpConnection.getResponseCode(); 9LJZ-/Wq if(responseCode>=400) YX*x&5]lq { -V.d?A4" processErrorCode(responseCode); !D^c3d
return -2; //-2 represent access is error f9$xk|2g } +j14Q$ l! bv^ pKG<Nvgz& String sHeader; (5L-G{4 +kK s@4nWe for(int i=1;;i++) cZ8.TsI~ { zmuMWT; //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); x Gk6n4Gg //Utility.log(in.readLine()); FDzqL;I sHeader=httpConnection.getHeaderFieldKey(i); O*6n$dUj3 if(sHeader!=null) \c,pEXG { DL^o_61 if(sHeader.equals("Content-Length")) "UFs~S|e { 0pb'\lA nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); OPJ: XbG
break; Y$K!7Kq } Cizvw'XDV } 8)*2@-Rp else Y*oDO$6 break; DE$q+j0P } g^Yl TB } K BE Ax3 catch(IOException e){e.printStackTrace ();} B;6]NCxD catch(Exception e){e.printStackTrace ();} iRo.RU8> ;h=*!7:
#FOqP!p.E Utility.log(nFileLength); Cs3^9m6;d y;cUl, :v 8LkP)]4^sO return nFileLength; W<ZK,kv } ^ >x|z. qVqRf.-\ g6t"mkMY
L //保存下载信息(文件指针位置) /hrT private void write_nPos() lA(Q@yEW { /'2O.d0}. try{ ) /vhclkb output = new DataOutputStream(new FileOutputStream(tmpFile)); h5_G4J{1 output.writeInt(nStartPos.length); DhLqhME53 for(int i=0;i<nStartPos.length;i++) 85:NFa@J { N{SQ(%V // output.writeLong(nPos); &.13dq output.writeLong(fileSplitterFetch.nStartPos); MB
ju![n output.writeLong(fileSplitterFetch.nEndPos); wFh8?Z3u_ } }T^cEfX output.close(); Y}*\[}l:&x } 'nQVj catch(IOException e){e.printStackTrace ();} o{b=9-V catch(Exception e){e.printStackTrace ();} EJ}!F?o } N]EcEM # 1LJuCI=~ f*{
YFg?*& //读取保存的下载信息(文件指针位置) sxKf&p; private void read_nPos() :AdDLpk3j { -~[9U, try{ V"o7jsFH6n DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Jf)bHjC_V int nCount = input.readInt();
JCcZuwu[ nStartPos = new long[nCount]; \6?A!w~6 nEndPos = new long[nCount]; #o/H~Iv for(int i=0;i<nStartPos.length;i++) `O?TUQGR { /M~!sPW&? nStartPos = input.readLong(); cq&*. nEndPos = input.readLong(); ,21 np } <:/&&@2 input.close(); |s#'dS; } `i) 2nNJ" catch(IOException e){e.printStackTrace ();} @$"J|s3M catch(Exception e){e.printStackTrace ();} mffn//QS } V=He_9B XY.5Rno4 $mmup|;( private void processErrorCode(int nErrorCode) >h2%[j= { uJHu>M}~ System.err.println("Error Code : " + nErrorCode); iI@jZVk } 02`$OTKz v8gdU7Ll, (6CN/A{qe //停止文件下载 E9|eu\ public void siteStop() n,HE0Zn]Y_ { H.<a`mm8 bStop = true; 07Gv* . for(int i=0;i<nStartPos.length;i++) w;}@'GgL fileSplitterFetch.splitterStop(); 93+"D` h)1qp Qj c^rOImZ } M/?KV9Xk2 } 9odJr] //负责部分文件的抓取 {8,<ZZ_ **FileSplitterFetch.java 5(W"-A} */ YCe7<3> J4 package NetFox; TSAU?r\P &
gJV{V5Ay ""Zp:8o import java.io.*; ^JZ^>E~ import java.net.*; S-31-Zjw ]q-g[e' id<:p*
public class FileSplitterFetch extends Thread { BR^7_q4q 7"7rmZ cYx4~ V^ String sURL; //File URL )%SkJ long nStartPos; //File Snippet Start Position x:vu'A long nEndPos; //File Snippet End Position zWpqJK int nThreadID; //Thread's ID e__@GBG boolean bDownOver = false; //Downing is over 9jN)I(^D6 boolean bStop = false; //Stop identical R(P%Csbqh FileAccessI fileAccessI = null; //File Access interface $Y=T&O %8*64T")
{7!UQrm< public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException )eUW5
tS { Zh5RwQNE~ this.sURL = sURL; 'Y$R~e^Y? this.nStartPos = nStart; `c/*H29 this.nEndPos = nEnd; 48|s$K ^ nThreadID = id; O\K_q7iO6 fileAccessI = new FileAccessI(sName,nStartPos);//定位 ;!o]wHmA } sS&Z ,A KbL V'%D \;VhYvEH public void run() ve
~05mg { EFpIp4_Y while(nStartPos < nEndPos && !bStop) #-3=o6DCK { K.G$]H =.y*_Ja HL/bS/KX try{ *Nyev]8 URL url = new URL(sURL); ^qCkt1C-M HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); UA[,2MBp httpConnection.setRequestProperty("User-Agent","NetFox"); Cv$
SJc String sProperty = "bytes="+nStartPos+"-"; 9Rm/V5 httpConnection.setRequestProperty("RANGE",sProperty); k>dsw : Utility.log(sProperty); ^gVT$A 8Qh#)hiW! th6+2&B6 InputStream input = httpConnection.getInputStream(); Qn ^bVhG+ //logResponseHead(httpConnection); iv phlw n~g)I& ]zO/A4 byte[] b = new byte[1024]; iX'rU@C int nRead; Lokl2o` while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) '(f/~"9B { x^"ES%* nStartPos += fileAccessI.write(b,0,nRead); Ladsw //if(nThreadID == 1) Ca%g_B0t // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }SI GPVM } axHK_1N{ ]$U xCu 0y<wvLv2C Utility.log("Thread " + nThreadID + " is over!"); 7W6cM%_B bDownOver = true; [4fU+D2\d //nPos = fileAccessI.write (b,0,nRead); \4"S7.% | } `@i5i(( catch(Exception e){e.printStackTrace ();} Z%GTnG|rG } 5Z4-Z } |QV!-LK jjJ2>3avY 0!z@2[Pe66 //打印回应的头信息 0O k,oW{ public void logResponseHead(HttpURLConnection con) Qb8KPpd { Mv c`)_Md for(int i=1;;i++) pfx3C* { 0l;<5 String header=con.getHeaderFieldKey(i); H+
h07\?
% if(header!=null) @!&}}"< //responseHeaders.put(header,httpConnection.getHeaderField(header)); *9)SmSs Utility.log(header+" : "+con.getHeaderField(header)); b3wM;jv else mMMQ|ea break; o]IjK } IVr 2y8K } >NB?&| nm7;ieMfr H:p Z-v* public void splitterStop() fYE(n8W3 { /6O??6g bStop = true; 1FtM>&%4 } jGrN\D?h RzhWD^b B v(OBXa9 } i(?,6)9 {cpEaOyOM +n}$pM|NKU /* PSawMPw **FileAccess.java tNVV)C *//文件访问(定位,写) %gnM(pxl package NetFox; gX{loG import java.io.*; TpA\9N#$ fQLt=Lrp y2O4I'/5< public class FileAccessI implements Serializable{ (Qgde6 S4witIK5 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 CE15pNss RandomAccessFile oSavedFile; Og;-B0,A long nPos; EBtLzbj yfU<UQ!1 Pmi#TW3X public FileAccessI() throws IOException /~4"No@ { %!ebO*8q this("",0); b|SE<\ } K
~ 44i &rDM<pO #- ?S?2 0 public FileAccessI(String sName,long nPos) throws IOException }HEvr)v9 { >zkRcm oSavedFile = new RandomAccessFile(sName,"rw"); @pGZLq this.nPos = nPos; 7FN<iI&7\ oSavedFile.seek(nPos); W4;m H}#0 } $3D'4\X~? qH"Gm ]]}tdn _ public synchronized int write(byte[] b,int nStart,int nLen) WWT",gio { Gu=STb int n = -1; E{HY!L[ try{ EkT."K oSavedFile.write(b,nStart,nLen); 5unG#szq n = nLen; %LXM+<N8 }
"o& E2# catch(IOException e) (wc03,K^ { +l^LlqA e.printStackTrace (); >r &;3:" } 9;yn}\N ` 74<!&t PNW \*;j return n; 7^}Ll@ } /S:F)MO9 yBLK$@9 7=@jARW& } )pw&c_x .^)UO 2!N8rHRt /* J==SZ v **SiteInfoBean.java UR(-q */ W~_t~Vg5 package NetFox; }0,>2TTDN dk8wIa"K` `ovtHl3Q public class SiteInfoBean { [nxE)D X &2oPo hP J4Oj1O private String sSiteURL; //Site's URL X\p,%hk \ private String sFilePath; //Saved File's Path \b}~2oX private String sFileName; //Saved File's Name MH|]\ private int nSplitter; //Count of Splited Downloading File #6Xs.*b5C &iN--~}!$ 79zJ\B_ public SiteInfoBean() .@iFa3 {//nSplitter的缺省值为5 \qi|Js*{ //default value of nSplitter is 5 ]E3U
J!! this("","","",5); qDWsvx] } m?s}QGSka # N~,F@t w",?
Bef
public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) G
;?qWB, { Bs`$ i ;& sSiteURL= sURL; JT[*3h sFilePath = sPath; uhN%Aj\iu( sFileName = sName; NGYyn`Lx this.nSplitter = nSpiltter; h5
Vv:C +b;hBb]R W{XkVKe1a } +@X5!S6 5)1+~ B mq /zTm public String getSSiteURL() 9ykM3 { o6"*4P| return sSiteURL; }aB#z<B6 } 3*DXE9gA9 ^GN8V-X4y QbYc[8-[ public void setSSiteURL(String value) /Tz85 [%6 { \(I6_a_{ sSiteURL = value; 3E} An% } U7&x rif hwnx<f ' ps1YQ3Ep& public String getSFilePath() ;D ~L| { lfk9+) return sFilePath; n)8Yj/5 } b syq* G,&%VQ3P> Bp AB5=M0 public void setSFilePath(String value) &UAe!{E0 { 5,+\`!g sFilePath = value; )J/HkOj"V } uMXc0fs!$ .uZ7 -l @^nu#R public String getSFileName() jRkC/Lw { h~HB0^| return sFileName; ~QG?k } fF?6j >AD=31lq #?}6t~ public void setSFileName(String value) ed~R>F> { "i'bTVs sFileName = value; ,W5.:0Y;f[ } M\/XP| 7 Qqs"?Z,P ?`sy%G public int getNSplitter() k/&]KYwu { P1 +"v* return nSplitter; XOrfs sj } 90 {tI X 7u11&(Lz 7-iIay1h" public void setNSplitter(int nCount) lhn8^hOJ/ { :,]S}R nSplitter = nCount; ,-*iCs< } jy$@a%FD } ayp b 5P^ U_ _&{%Wc5W~F /* $B\E.ml. **Utility.java |:iEfi]j */ ~P1_BD( package NetFox; Unl?fXI ='Oj4T H;vZm[\0N- public class Utility { QrjDF> Rmh*TQu Vk<k +=7 public Utility() \&|CM8A { ?_4^le[; tFU;SBt8Ki M$#sc`4* } =DgCC|p \d68-JS@~ //线程睡眠 E1q%gi4 Q% public static void sleep(int nSecond) MZm'npRf { k0K A ~ try{ 8Pmwzpk02 Thread.sleep(nSecond); nsJ:Osq| } ;x[pM_ catch(Exception e) ")\aJ8 { eqzTQen8q e.printStackTrace (); =t+ (' } _x\m|SF_g } ~@M7&%] k&Jo"[i&WO //日志 )LFD6\z1pl public static void log(String sMsg) ??xlA-E { t{(Mf2GR1
System.err.println(sMsg); 0<P(M: a } g{ (@uzqG ?iz<
8]*Q79 public static void log(int sMsg) =y;@?=T { 19y
0$e_V System.err.println(sMsg); OXtBJYe } B3b,F # } `ut)+T V : ^(nj7D y_%&]/% /* h;Mu[` **TestMethod.java "Pdvmur */ }MZan" cfo package NetFox; Q]i[.ME Y?!/>q $%}>zqD1 public class TestMethod { {CP o<lz 75 Fp[Q- Ru7L>(Njs public TestMethod() Yf(im { ///xx/weblogic60b2_win.exe HTNA])G try{ +{vQSFW SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); &q>h*w4O //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); -Op@y2+c SiteFileFetch fileFetch = new SiteFileFetch(bean); ABiC9[Q0 fileFetch.start(); -- S"w@ } lZ a?Y@ catch(Exception e){e.printStackTrace ();} vahf]2jEB W:B }u\)C =
o+7xom } @^HwrwRA RK3.- fk\5D[j^ public static void main(String[] args) 6aSM*S) { _h~p:= new TestMethod(); c%yh(g } onh?/3l } AO8:|?3S 点击下载更多相关资料
|