-
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
|
/* jq["z<V)x **SiteFileFetch.java 5Tpn`2F */ aG\m3r package NetFox; ]'_z(s} import java.io.*; :7Vm]xd}do import java.net.*; !*|CIxk( nL+*Ja
X2i<2N*@ public class SiteFileFetch extends Thread { `bT{E.(T df1* [ =10t3nA1$ SiteInfoBean siteInfoBean = null; //文件信息Bean i%*x7zjY{ long[] nStartPos; //开始位置 SsznV}{^ long[] nEndPos; //结束位置 H[,.nH_>+ FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ir\3c9 long nFileLength; //文件长度 'KQuz)- boolean bFirst = true; //是否第一次取文件 &9s6p6eb boolean bStop = false; //停止标志 v,|;uc+ File tmpFile; //文件下载的临时信息 /2HwK/RZ DataOutputStream output; //输出到文件的输出流 XY4s q]Qgg //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) "-xC59, public SiteFileFetch(SiteInfoBean bean) throws IOException @/0aj { K.z}%a siteInfoBean = bean; Wt3\&.n //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 8:&@MZQ&! tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ',!#?aGV if(tmpFile.exists ()) Pm?6]] 7 { s\jLIrG8 bFirst = false; 2s{yg%U( read_nPos(); pb{P[-f } _~cmR< else ^5T{x>Lj { <m(nZ'Zqz2 nStartPos = new long[bean.getNSplitter()]; [U jbox nEndPos = new long[bean.getNSplitter()]; e8lF$[i } If&p$pAH? ADBw" ? > B)-S@.u bm+ Mr } ttw@nv%
@ J5o"JRJ" S$H4xkKs public void run() XW#4C*5?d { KcU,RTE //获得文件长度 df:,5@CJ8 //分割文件 }%1E9u //实例FileSplitterFetch TRq~n7Y7C //启动FileSplitterFetch线程 LTY.i3
//等待子线程返回 ~clWG-i try{ )T3wU~% if(bFirst) u3ZG;ykM { eQLa .0 nFileLength = getFileSize(); ^4fkZh if(nFileLength == -1) OS9v.pz { AHA*yC System.err.println("File Length is not known!"); ;|^fAc~9{r } RTU:J67E else if(nFileLength == -2) wd]Yjr#%Ii { zR
.MXr System.err.println("File is not access!"); v8 X&H } )} #r"! else }"8_$VDcz { TB[vpTC9) for(int i=0;i<nStartPos.length;i++) /Yh([P> { Z
kS*CG nStartPos = (long)(i*(nFileLength/nStartPos.length)); ?~K2&eo } f65Sr"qB3 for(int i=0;i<nEndPos.length-1;i++) Qh[t##I/ { O>Sbb2q?" nEndPos = nStartPos[i+1]; ` WB|h)Y } X"0Q) nEndPos[nEndPos.length-1] = nFileLength; {k*_'0 }
4[ra } QE gv,J{ + ND9### mOB\ `&h5 //启动子线程 NLpD,q{ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &zp5do;m for(int i=0;i<nStartPos.length;i++) P2p^jm
{ <H)@vW]_ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), J$Q-1fjj siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Dpd$&Wr0Y nStartPos,nEndPos,i); yU.0'r5uR Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _~kcr5 fileSplitterFetch.start(); p(G? } ;Ki1nq5c#s // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), FCWphpz siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); twtDyo(\ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", K)?^b|D nEndPos = " + nFileLength); ~roHnJ> // fileSplitterFetch[nPos.length-1].start(); *LRGfk+h yjq
)}y,tF Lk9>7xY //等待子线程结束 [1C#[Vla //int count = 0; ,lnuu //是否结束while循环 ?5Fj]Bk] boolean breakWhile = false; zEW:Xe) _iu|*h1y
%\cC]<> while(!bStop) aK{\8L3] { DVJc-.x8 write_nPos(); i[pf*W0g Utility.sleep(500); 8j}m\^si breakWhile = true; LXLDu2/@ k%g xY% 0 C=IH#E= for(int i=0;i<nStartPos.length;i++) {nefS\#{ { ~@D%qbN if(!fileSplitterFetch.bDownOver) 6bNW1]rD { |S{P`)z%f breakWhile = false; aA`q!s.%A break; }|Tg_+ } >~rd5xlk } h'~-K` if(breakWhile) Ij1]GZ`A( break; j>xVy]v= | a*j <TR !&O/7ywe //count++; p*,P%tX //if(count>4) C|\^uR0 // siteStop(); _}@n_E } 2g6_qsqi 49oW 'j OLNn3
J System.err.println("文件下载结束!"); $
bNe0
} 51qIo 4$ catch(Exception e){e.printStackTrace ();} wLSZL } `E=rh3 L0o &&1Y"dFs .)>/!|i //获得文件长度 S}^s5ztm public long getFileSize() eCIRt/ uA { mN{ajf)@ int nFileLength = -1; z<6P3x| try{ Gv,92ny!| URL url = new URL(siteInfoBean.getSSiteURL()); 9c{%m4 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); hlFU"u_ httpConnection.setRequestProperty("User-Agent","NetFox"); #)A?PO2 fslk7RlSKg @P"`=BU& int responseCode=httpConnection.getResponseCode(); :F>L;mp if(responseCode>=400) |M<.O~|D6} { 7e4tUAiuU processErrorCode(responseCode); N~}v:rK>g return -2; //-2 represent access is error d =(Yl r } 4 uy @ { p
(xD/E Ag#5.,B- String sHeader; r(1pvcWY- }'V'Y[ +z(,A for(int i=1;;i++) O&gwr { \e:FmG //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); %*5g<5 //Utility.log(in.readLine()); a&s"#j sHeader=httpConnection.getHeaderFieldKey(i); :*P___S= if(sHeader!=null) Iz?Wtm } { =!S@tuY if(sHeader.equals("Content-Length")) [wy3Ld { Tc3ih~LvG nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); m{lRFKx>s break; @0UwI%. } SEQO2`]e: } }U?gKlLg else [2QY break; P96Cw~<Q? } F@_Egi }
il IV}8 catch(IOException e){e.printStackTrace ();} a(x.{}uG, catch(Exception e){e.printStackTrace ();} neB.Wu~WH 0K$WSGB?6j g`)/ x\ Utility.log(nFileLength); PK-}Ldj
r\l3_t [I++>4 return nFileLength; KM_)7?` } r :fwrC z{_mEE49 fl!mYCPv //保存下载信息(文件指针位置) S9OxI$6Y
private void write_nPos() ::p-9F { PRMZfYc try{ Tx y]"_ output = new DataOutputStream(new FileOutputStream(tmpFile)); 1P5*wNF output.writeInt(nStartPos.length); h=X7,2/< for(int i=0;i<nStartPos.length;i++) Zr\2BOcc.l { '9^E8+=| // output.writeLong(nPos); Hm.X}HO0L output.writeLong(fileSplitterFetch.nStartPos); zSEr4^Dk4 output.writeLong(fileSplitterFetch.nEndPos); <$"7~i/X } cNdu.c[@ output.close(); +ckMT3 } \z2vV+f catch(IOException e){e.printStackTrace ();} ?2H{^\<(e catch(Exception e){e.printStackTrace ();} V%i<;C } ;
qO@A1Hq OpYmTep#T\ j1'\R+4U //读取保存的下载信息(文件指针位置) G"}qV%"6" private void read_nPos() cL6 6gOEL { #o"tMh!f try{ ;_x2Ymw DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Vz%"9`r int nCount = input.readInt(); .8-PB*vb nStartPos = new long[nCount]; J =b* nEndPos = new long[nCount]; b21}49bHN for(int i=0;i<nStartPos.length;i++) :RPVT,O} { @=CLeQG` nStartPos = input.readLong(); BeAk21xb nEndPos = input.readLong(); mG
X\wta } &Y 'z?N input.close();
wtlB } 'zE:
fLo catch(IOException e){e.printStackTrace ();} C2NzP & FD catch(Exception e){e.printStackTrace ();} OE6#YT } JAN|aCzD RTA%hCr! 7Ez}k}aR< private void processErrorCode(int nErrorCode) !5NGlqEF# { xOhRTxic System.err.println("Error Code : " + nErrorCode); D4d]3|/T } OthG7+eF #uB[&GG}W @sN^BX`z //停止文件下载 H%FM public void siteStop() anLbl#UV { }&mj.hGv bStop = true; av$ for(int i=0;i<nStartPos.length;i++) !`Le`c fileSplitterFetch.splitterStop(); " l.!Ed 0"4J"q]& g083J}08 } :r\xkHg/f } cFw3Iw"JJ //负责部分文件的抓取 bea|?lK **FileSplitterFetch.java L+7*NaPY* */ bZu$0IG package NetFox; iEe#aO"D! A^8x1ydZ |"_ )zQ import java.io.*; nVNs][ import java.net.*; ,|A{!j` c+H)ed> G<|:605 public class FileSplitterFetch extends Thread { Q~8y4=|#CY %Or2iuO%-, 2g0K76=Co: String sURL; //File URL NfOp=X?Y long nStartPos; //File Snippet Start Position f*v1J<1# long nEndPos; //File Snippet End Position .3( ;9}; int nThreadID; //Thread's ID E_]k>bf\ boolean bDownOver = false; //Downing is over 2!BsEvB( boolean bStop = false; //Stop identical =88t*dH(," FileAccessI fileAccessI = null; //File Access interface .ByU h>| g2h i]dz}= j' public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException X'jr|s^s { *l:&f_ngV this.sURL = sURL; \x(.d.l/ this.nStartPos = nStart; ;sCU[4 this.nEndPos = nEnd; RNvQ nThreadID = id; {79qtq%W{ fileAccessI = new FileAccessI(sName,nStartPos);//定位 J+lGh9G } JS PW>W" .8:+MW/ 22|"K**3J| public void run() Vli3>K& { i0iez9B
while(nStartPos < nEndPos && !bStop) @"w2R$o { QE3ryD TqAtcAurM Hk~k@Wft try{ 1g~y]iQ URL url = new URL(sURL); ?|lI Xz HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Ox~ 9_d httpConnection.setRequestProperty("User-Agent","NetFox"); ?d~]Wd !z String sProperty = "bytes="+nStartPos+"-"; KI`11lJW~ httpConnection.setRequestProperty("RANGE",sProperty); zWb-pF| Utility.log(sProperty); UP]1(S? Qww^P/vm LJj=]_ InputStream input = httpConnection.getInputStream(); Vha'e3o! //logResponseHead(httpConnection); F;-90w _F^$aZt?e bs
BZE byte[] b = new byte[1024]; gJK KR]4* int nRead; Ch7Egzl7? while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) Tt%}4{"
{ DRp&IP< nStartPos += fileAccessI.write(b,0,nRead); VyY.r#@ //if(nThreadID == 1) Qm; BUG] // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); QkL@JF]Re } q1w|'V f1J%]g! wFb@1ae\ Utility.log("Thread " + nThreadID + " is over!"); eC;!YGZ bDownOver = true; ;y OD //nPos = fileAccessI.write (b,0,nRead); LXNQb6! } `s%QeAde catch(Exception e){e.printStackTrace ();} vd(dNu&,< } hiN/S|JN8y } rREzM)GA g|4w8ry E(;i> //打印回应的头信息 l&Q!mU} public void logResponseHead(HttpURLConnection con) k}U
JVH21k { >XnO&hW for(int i=1;;i++) )!sa)\E? { (Q_2ODKo String header=con.getHeaderFieldKey(i); N Bz%(?\ if(header!=null) yl/a:Q //responseHeaders.put(header,httpConnection.getHeaderField(header)); I="oxf#q Utility.log(header+" : "+con.getHeaderField(header)); cgN>3cE else :<%vE !$ break; .Q[yD<)Ubs } T VeJ6 } Y&GuDLUF
W_}/ O'l{ l#xw.2bo public void splitterStop() 0Cq!\nzz { $"fzBM?5 bStop = true; LS6ry,D"7 } 'hIU_ %w:'!X>< K(3&27sGN } 3+9
U1:1[. >qpqQ;
bm vi|Zit /* fnOIv# **FileAccess.java }p{;^B *//文件访问(定位,写) #HG&[Ywi package NetFox; (Fqa][0 import java.io.*; M=[th [%~^kq=| 2fbU-9Rfn public class FileAccessI implements Serializable{ <A{y($ B@-"1m~la? //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 lC2?sD$ RandomAccessFile oSavedFile; ]ViOr8u long nPos; !&JiNn(' h>|u:]I> '=@r7g.2 public FileAccessI() throws IOException gLx/w\l6 { |!xpYT: this("",0); s ^3[W0hL } Vrg3{@$ f@x_#ov OM{Dq| public FileAccessI(String sName,long nPos) throws IOException _k|g@" { t\|J&4!Y oSavedFile = new RandomAccessFile(sName,"rw"); ]hKgA~; this.nPos = nPos; fCr\u6Tb oSavedFile.seek(nPos); yl]UUBcQ } u?Z
<n: j[H0SBKC hv{87`L'K( public synchronized int write(byte[] b,int nStart,int nLen) &D)2KD"N { -nGwuEngP int n = -1; c"qPTjY try{ W]@6=OpH oSavedFile.write(b,nStart,nLen); {=6)SBjf n = nLen; Ysl9f1>% } ke^d8Z. catch(IOException e) hMWo\qM { ;le0QA
Pf e.printStackTrace (); w#<p^CS } '{CWanTPi .8x@IWJD KD=bkZ& return n; t*s!0'Y } ZqFUPHc Y!it!9 *V -ds8AQ } jNIUsM8e _{mJ.1)V; 8
#Fh> /* 8UYJye8 **SiteInfoBean.java &8afl"_~ */ fRFYJFc n package NetFox; 4ODX5If 9':/Sab:7v I^@.Awt public class SiteInfoBean { uD[^K1Ag]^ -aT=f9u jP7w6sk
E private String sSiteURL; //Site's URL ^^eV4Y5`+ private String sFilePath; //Saved File's Path t%:G|n Sz private String sFileName; //Saved File's Name Uqr{,-]5v private int nSplitter; //Count of Splited Downloading File %^T!@uZr sjcQaF`= l)H9J]
public SiteInfoBean() "!^c {//nSplitter的缺省值为5 cT I,1U //default value of nSplitter is 5 tbY SK this("","","",5); E::<;9 } o:4CI Ir^ BC!<2> l=,.iv=W public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) c9|I4=_K { -h=c=P sSiteURL= sURL; W!y)Ho sFilePath = sPath; ]2P/G5C3tU sFileName = sName; pL%4= ]m this.nSplitter = nSpiltter; )S#j.8P'B SK}HXG{? 5vYsA1Z } V!\n3i?i "\}21B~{7' A7.JFf> public String getSSiteURL() !\3}R25 { $,g 3*A return sSiteURL; A<a2TXcIE3 } ~T;K-9R eK\|SQb GCZu<, public void setSSiteURL(String value) {7/ A { ^GrNfB[Qu sSiteURL = value; 4{g:^?1= } -aC!0O y` ^Kb9@lz/ #*[,woNk public String getSFilePath() C:WtCAm( { A>H*`{} return sFilePath; 3zk:59 } wVlSjk h 3eGq:!9 ^
yY{o/6 public void setSFilePath(String value) X+/{%P!w { ;jp6 }zfI sFilePath = value; 3-4Nad } ^)(G(=-Rf D>psh-,1 rE!G,^_{ public String getSFileName() "cIGNTLFA { A/ox#(!v return sFileName; Nck!z8 } |`N$>9qN #nxER WHZe)|n public void setSFileName(String value) Wm];p qN { 6GvhEulYR sFileName = value; !"Z."fm* } ex0
kb qz-#LZFTR %4QoF public int getNSplitter() buMiJzU { <=B1"'\ return nSplitter; ?CcR
7l } i{%z f\U? :83 gOBj0P8s|} public void setNSplitter(int nCount) P wt ?9I { Hsd|ka$x> nSplitter = nCount; +9=@E } 3n}sCEt= } mcAH1k e X_^_r{ ;]l{D} /* y<I Z|f **Utility.java 0ECO/EuCg */ Vq)|gF[6i package NetFox; m!FM+kge c0,gfY%sI$ <;TP@-a public class Utility { $=@9 D,R 9.MGH2^L? )%H5iSNG$P public Utility() N9>'/jgZX { =/ !{<^0 &VZmP5Gv 7DC0 W|Fe } J*^,l`C/ \(
Gf+ //线程睡眠 '<{oYXZW3 public static void sleep(int nSecond) e&FX7dsyy { ZmR[5 mv@ try{ 3^iQe"P%a@ Thread.sleep(nSecond); 2yCd:wg } vo}_%5v8 catch(Exception e) )N%1%bg^- { "0!eb3n e.printStackTrace (); 709Uv5 } {W:)oh> }
E&T'U2 i\DHIzGp[ //日志 L(!!7B_, public static void log(String sMsg) .9[8H:Fe { hsQ rd%{f System.err.println(sMsg); }77=<N br } )W}/k$S f@xfb
ie! B3g82dm public static void log(int sMsg) X~Rk ,d3 { GqK&'c System.err.println(sMsg); tr9_bl&z } w'zO(6 ` } _QOOx+%*5 -<}>YtB
Q #QyK?i* /* j
O5:{% **TestMethod.java }5Tyz i( */ xjn8)C package NetFox; lz5j~t5>Q s OHAW*+ QO^X7A"?X public class TestMethod { %+JTQy 5DBd
[u3 ]6 7wk public TestMethod() lMf5F8 { ///xx/weblogic60b2_win.exe 'WgwLE_ try{ `\uv+^x{ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); lGgKzi9VD //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 13@| {H CB SiteFileFetch fileFetch = new SiteFileFetch(bean); @G{DOxE* fileFetch.start(); &otgN<H9 } *Bz& |