-
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
|
/* *X{7m]5 **SiteFileFetch.java IUDH"~f */ =@S
a\; package NetFox; J@"UFL'^ import java.io.*; lSlZ^.& import java.net.*; G.^)5!By QqRF?%7q"q cTS.yN({G public class SiteFileFetch extends Thread { \#WWJh"W : p)R,('g ij!], SiteInfoBean siteInfoBean = null; //文件信息Bean DA04llX~ long[] nStartPos; //开始位置 5!cp^[rGL long[] nEndPos; //结束位置 Sc#3<nVg FileSplitterFetch[] fileSplitterFetch; //子线程对象 @}:E{J#g long nFileLength; //文件长度 ?qi~8.<w boolean bFirst = true; //是否第一次取文件 $(+xhn(O boolean bStop = false; //停止标志 wu><a!3`=o File tmpFile; //文件下载的临时信息 c9o]w8p/ DataOutputStream output; //输出到文件的输出流 #/jug[wf*! w-2#CX8jY //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) /H"fycZ public SiteFileFetch(SiteInfoBean bean) throws IOException SDV#p];u { F_9
4k siteInfoBean = bean; k52IvB@2 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); MmfBFt* tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); +3o0GJ
if(tmpFile.exists ()) < \fA}b { ?|/K(} bFirst = false; dQZdL4 read_nPos(); 9<&M~(dwT4 } JqZt1um else CLk,]kA'r { \Vroz=IT: nStartPos = new long[bean.getNSplitter()]; E?czolNl nEndPos = new long[bean.getNSplitter()]; bmK } ZSW@,Ti [Eccj`\e g p
JT)X8K" `e~i<Pi } /}
z9( *~shvtq 'I+S5![< public void run() r~YBj>} { TukhGgmF //获得文件长度 8<mloM-4 //分割文件 H#D:'B j29 //实例FileSplitterFetch @&`^#pok //启动FileSplitterFetch线程 1 :$#a //等待子线程返回 )^AZmUYZ try{ \8!CKnfs if(bFirst)
{U$XHG { R]e&JoY nFileLength = getFileSize(); Z37Dv;&ZD if(nFileLength == -1) - _8-i1? { *?d\Zcj85[ System.err.println("File Length is not known!"); q~
ZUtF } A{J?I: else if(nFileLength == -2) ^)Awjj9 { Yl>Y.SO System.err.println("File is not access!"); Zi+F IQ( } "yh2+97l else !j`<iPI7B { fs;\_E[) for(int i=0;i<nStartPos.length;i++) k{#k: { -,+C*|mu nStartPos = (long)(i*(nFileLength/nStartPos.length)); F~fBr } T9&{s-3* for(int i=0;i<nEndPos.length-1;i++) }T(=tfv@ { ~!~i_L\V nEndPos = nStartPos[i+1]; u&uFXOc' } `ovMfL.u nEndPos[nEndPos.length-1] = nFileLength; KJ32L } Q"D } j0~am,yZ jT$J~MpHh 6xtgnl#T //启动子线程 uA[
: fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; aVK,(j9u for(int i=0;i<nStartPos.length;i++) &
[@)Er= { 4-SU\_ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), IB|6\uKn siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), &U?4e'N)T nStartPos,nEndPos,i); U)Hc7%
e Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); HVoPJ!K3 fileSplitterFetch.start(); 4)D~S4{E5 } "5<! // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ><D2of| siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); B>:U // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", i6k6l% nEndPos = " + nFileLength); 0C%IdV%CU // fileSplitterFetch[nPos.length-1].start(); lSaX!${R'T XXn3K BIf N,rd= m+ //等待子线程结束 ]
&" ` //int count = 0; qQ^CSn98J //是否结束while循环 7r'_p$ boolean breakWhile = false; Ul/m]b6- /huh}&NNu FCEmg0qdjD while(!bStop) "Y L^j~A { t?-a JU write_nPos(); r'#!w3*Cy Utility.sleep(500); O.X;w<F/V breakWhile = true; ;@ixrj0u rZpsC}C' ],0I`!\ for(int i=0;i<nStartPos.length;i++) dR.?Kv(,E { LKc p.i if(!fileSplitterFetch.bDownOver) BWxJ1ENM
{ q x1Js3% breakWhile = false; EG qu-WBS break; .6$=]hdAp } }"WovU{*s } !Whx^B: if(breakWhile) AQ(n?1LU break; B *O/>=_ ?+7~E8 TO5y.M|7 //count++; n:wAxU //if(count>4) @OT$* Qh // siteStop(); fi>.X99(G } :3R3>o6m zLe(#8G E_A5KLP System.err.println("文件下载结束!"); AEnkx!o } KG(FA catch(Exception e){e.printStackTrace ();} VT4>6u} } 0_ST2I"Ln \.i ejB qS! Lt3+ //获得文件长度 ~=c5q public long getFileSize() bws}'#-* { zE1=P/N int nFileLength = -1; QnBWZUI try{ G)[gLD{g? URL url = new URL(siteInfoBean.getSSiteURL()); 3=oxT6"k HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); cSB_b.@"1 httpConnection.setRequestProperty("User-Agent","NetFox"); +{=U!}3| Tim/7*vx w<THPFFF" int responseCode=httpConnection.getResponseCode();
Nb3O>&J if(responseCode>=400) G$'UK { eP:\\;
; processErrorCode(responseCode); 6p&2A return -2; //-2 represent access is error }z/%b<o_ } %7`eT^ U_'M9g{,< }jC^&%| String sHeader; MtPdpm6\ 2^`k6V! vs+aUT C\ for(int i=1;;i++) 9pj6`5Zn@6 { u@:[ dbJ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); K@2"n|
S; //Utility.log(in.readLine()); $Lbamg->E sHeader=httpConnection.getHeaderFieldKey(i); zmD7]?| if(sHeader!=null) t+F_/_"B { N.Q}.(N0 if(sHeader.equals("Content-Length")) seAPVzWUU { #+_=(J nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); iuXXFuh break; T zS?WYF } ,d lq2 } i9qIaG/ else PWp=}f.y break; 8EJP~bt } HbPn<x^7 } V>obMr^5 catch(IOException e){e.printStackTrace ();} ?-2s}IJO catch(Exception e){e.printStackTrace ();} B>cT<B Nc[N 11?O Zw{?^6;cS Utility.log(nFileLength); GNuIcy j-"34 TUwX4X6m return nFileLength; N8kNi4$mp= } =a+
} 6 2/A*\ H{i|?a) //保存下载信息(文件指针位置) NhTJB7 private void write_nPos() n,s7!z/ { 4,R"(ej try{ b?,%M^9\` output = new DataOutputStream(new FileOutputStream(tmpFile)); "WtYqXyd output.writeInt(nStartPos.length); j$s/YI: for(int i=0;i<nStartPos.length;i++) 4bw4!z9G { 9Qu(RbDqC // output.writeLong(nPos); m:0[as= output.writeLong(fileSplitterFetch.nStartPos); hP.Km%C)0n output.writeLong(fileSplitterFetch.nEndPos); g2==`f!i } KTot40osj output.close(); YuIF}mUr" } O/#uQn} catch(IOException e){e.printStackTrace ();} +03/A`PKrB catch(Exception e){e.printStackTrace ();} 6;s[dw5T } 2)0J@r' 1k)pJzsc bd}[X'4d //读取保存的下载信息(文件指针位置) 0,@^<G8? private void read_nPos() Svo\+S { 6yAZvX try{ nnT#S DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); [.Fq
l+ int nCount = input.readInt(); -nHkO&&R nStartPos = new long[nCount]; 1\aTA, nEndPos = new long[nCount]; (@!K tW for(int i=0;i<nStartPos.length;i++) :06.b:_ { 7mXXMm nStartPos = input.readLong(); #XqCz>Z nEndPos = input.readLong(); L$);50E
} |`o1B;lc input.close(); w8 UUeF } =)g}$r
&< catch(IOException e){e.printStackTrace ();} @b., pwZF catch(Exception e){e.printStackTrace ();} 4]p#9`j } ,:'JJZg@ ?ILjt? X8 &!WRa@x0I private void processErrorCode(int nErrorCode) [dFcxzM-N { $%31Gk[I System.err.println("Error Code : " + nErrorCode); |=,jom } HYT~AO-! I
2OQ IDos4nM27] //停止文件下载 4<E <sD public void siteStop() -Hw3rv3o { BgdUG:;&
bStop = true; }
d8\ Jg for(int i=0;i<nStartPos.length;i++) LA2/<: fileSplitterFetch.splitterStop(); &hL2xx= ]e"!ZR?XJ ,!%E\` } cqs.[0 z#B } #Y //负责部分文件的抓取 Lr8|S **FileSplitterFetch.java 'yA/sZ */ V'Kied+ package NetFox; ~$[fG}C.K ]W2#8:i ]sVWQj import java.io.*; >D~8iuy]8. import java.net.*; 4~FRE)8 Qyx~={.C~ nIfAG^?|* public class FileSplitterFetch extends Thread { <BZC5b6 oCI\yp@a ,5}w]6bCr String sURL; //File URL |Z2"pV long nStartPos; //File Snippet Start Position q%$p56\?3 long nEndPos; //File Snippet End Position E7@Gpu,o int nThreadID; //Thread's ID ~UO}PI`C boolean bDownOver = false; //Downing is over :@-yK8q's boolean bStop = false; //Stop identical !P^Mo> " FileAccessI fileAccessI = null; //File Access interface uG6.(A1LM <1>6!`b4 Z~-N'Lt{ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException W { UXpp1/d|e this.sURL = sURL; g%[:wjV; this.nStartPos = nStart; wik<#ke this.nEndPos = nEnd; C|3Xz[k{ nThreadID = id; g<0K
i^# fileAccessI = new FileAccessI(sName,nStartPos);//定位 J!5b~8`v } .7b%7dQ<\ =4SXntU!e 9609 public void run() =*lBJ-L { CyYr5 Dz while(nStartPos < nEndPos && !bStop) $HQ4 o\~ { .RFH@'' rQ]JM 6<fG;: try{ =G^'wwpv( URL url = new URL(sURL); =QtFJ9\ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7[qL~BT+ httpConnection.setRequestProperty("User-Agent","NetFox"); N5sVRL"7 String sProperty = "bytes="+nStartPos+"-"; GxG~J4 httpConnection.setRequestProperty("RANGE",sProperty); Tjrb.+cua Utility.log(sProperty); L2EQ 9i'[ C5TV}Bq\ '&Y_,-i InputStream input = httpConnection.getInputStream(); c$&({Z{1 //logResponseHead(httpConnection); YOGj__: 0\ (:y^X Gvh"3|u?z byte[] b = new byte[1024]; /P TRe5-7 int nRead; {dpDQP +! while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) <Ohi+a%6 { Z10}xqi!X nStartPos += fileAccessI.write(b,0,nRead); ! {G0' //if(nThreadID == 1) >|kD(}Axf // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); zN[&
iKf } ,z/aT6M?H E/%"%&`8j YT(Eh3ID Utility.log("Thread " + nThreadID + " is over!"); C]5 kQ1Og bDownOver = true; kV?fie<\) //nPos = fileAccessI.write (b,0,nRead); Bz-jy. } ^w~B]*A:" catch(Exception e){e.printStackTrace ();} H~Vf;k> } 6V JudNA } $'Mf$h ;2&" LAxN?ok9gD //打印回应的头信息 6Nn+7z<*&z public void logResponseHead(HttpURLConnection con) GVnDN~[
{ 8/dMvAB1So for(int i=1;;i++) Qm[s"pM { hd9HM5{p String header=con.getHeaderFieldKey(i); ztSQrDbbb4 if(header!=null) (M$>*O3SR //responseHeaders.put(header,httpConnection.getHeaderField(header)); c6 mS Utility.log(header+" : "+con.getHeaderField(header)); -X$EE$: else wxh\CBxG break; QtKcv7:4 } UiH7 } @g5y_G{SP ]&Y^ 5{V"!M+< public void splitterStop() ;j1E 6 { <Jhd%O bStop = true; ]Rxo}A } QWfSm^
t #Iz)Mu T*C25l;w } ;n(f?RO3X %hYgG;22 l|gi2~ %Y /* Vl5>o$G|<. **FileAccess.java g_syGQ\ *//文件访问(定位,写) /ie&uWy package NetFox; %w65)BFQ import java.io.*; L>sLb(2\i ~KS@Ulrox Zhfg public class FileAccessI implements Serializable{ fIQ,}> 66eJp-5e8 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 K}@rte RandomAccessFile oSavedFile; r]p3DQ long nPos; 8N'hG, QNMZR |@JTSz*Or public FileAccessI() throws IOException BkXv4|UE { 4DCh+|r this("",0); `~u=[}w } OmWEa Yt(FSb31H E! NtD).=S public FileAccessI(String sName,long nPos) throws IOException mv8H:T { Gr2}N"X= oSavedFile = new RandomAccessFile(sName,"rw"); %BkE %ZcZ this.nPos = nPos; uKk#V6t# oSavedFile.seek(nPos); 'D5J5+.z } a`w=0]1&* >EJ{ * iLSUz j` public synchronized int write(byte[] b,int nStart,int nLen) K.}jOm { 3/n?g7B int n = -1; V[/9?5pM try{ :;eOhZ=_ oSavedFile.write(b,nStart,nLen); iptA#<Yj n = nLen; :P_h_Tizv } 8+oc4~!A@n catch(IOException e) 7w)8s { Ljz)%y[s e.printStackTrace (); 2T2<I/")O } G^)]FwTs a^J(TW/ ]C,j80+pK return n; }VJ>}i* } ,g7O Sr6'$8#>Y ^;PjO|mD
Z } Q;3`T7 ?`?Tg&W j.Uy>ol /* #1J,!seJ **SiteInfoBean.java IwnDG;+Ap */ RG45S0Ygj package NetFox; lF(v<drkB }XBF#BN cF15Mm2 public class SiteInfoBean { I*a@_EO #(614-r/ p+=zl`\=| private String sSiteURL; //Site's URL k(H]ILL private String sFilePath; //Saved File's Path md{nHX& private String sFileName; //Saved File's Name K@1gK<,a private int nSplitter; //Count of Splited Downloading File S&UP;oc _oc6=Z bDWLHdu
a public SiteInfoBean() zS;ruK%2 {//nSplitter的缺省值为5 m=9b/Nr4 //default value of nSplitter is 5 A` _dj}UF this("","","",5); q#AEu
xI1 } p)B/(% QO;Dyef7b PzKTEYJL public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) u|IS7>Sm { `"CA$Se8 sSiteURL= sURL; GZaB z#U sFilePath = sPath; xbCR4upS sFileName = sName; ||X3g"2W9 this.nSplitter = nSpiltter; ~2rQ80_ >|%3j,<U kNWTM%u9 } e+BZoK ^ Rf4K Rhi m@kLZimD public String getSSiteURL() "W+>?u ) { `$jun return sSiteURL; vE(]!CB } 7#j.yf4 7 w,D2T k
?KJ8 public void setSSiteURL(String value) (
xooU 8d { X9?)P5h= sSiteURL = value; MUl7o@{' } %7mGMa/ nQV0I"f]?] Vc5>I_ public String getSFilePath() W6>t!1oO+ { [r"Oi|
8I return sFilePath; T=YVG@fm? } fmK~? 8:c=h/fa
F&!vtlV) public void setSFilePath(String value) ]CLM'$ { toGd;2rl sFilePath = value; ?0:]%t18 } tx
d0S! Z#@ `oNJ=,p public String getSFileName() 2LN6pu { X7-*`NI^ return sFileName; sDNWB_~ } \;MP|:{pU [ S }.045 Wuu public void setSFileName(String value) bj@sci(1? { ,&@GxiU sFileName = value; g5Hsz,x } r
Z5eXew6 d9
8pv% Ej VB\6, public int getNSplitter() y;9K { NVC$8imip return nSplitter; )[sSCt] } q|D*H9[ke ;NJM3g0I H~hAm public void setNSplitter(int nCount) 1nLFtiki { f'Xz4; nSplitter = nCount; ^n]?!BdU } 78b9Sdi& } =(k0^#++G hU2N{Ac tK <)A) /* ER$~kFE2yP **Utility.java kS7T'[d */ Y50$2%kM package NetFox; ~0.@1zEXj YX2j;Y? ]}0+7Q public class Utility { / dn]`Ge) R91u6r#
D3 E!jQ1 public Utility() 2gjA>ET`N { 483vFLnF QaEXk5>e KQqQ@D&n } JeCEj=_Z M9S[{Jj* //线程睡眠 `V0]t_*D public static void sleep(int nSecond) 7
~ Bo*UM { wY}+d0Ch try{ ~RE`@/wQ] Thread.sleep(nSecond); Y.Ew;\6U } 8%U)EU catch(Exception e) t,P+~ A { 54LCoG/ e.printStackTrace (); 9zd)[4%= } (C QgT3V } {k~$\J?. a. 5`Q2 //日志 ~JT{!wcE}o public static void log(String sMsg) e S
Fmx { [K9q+ System.err.println(sMsg); 9k"nx ," } #wm)e)2@ bmddh2 ]X _& public static void log(int sMsg) j({L6</x { RMrt4:-DI System.err.println(sMsg); gA) F } uTJ?@^nq } Cw^)}23R EGMcU|yL >"nk}@ /* #QDV_ziE5 **TestMethod.java I2l'y8)d */ a+BA~|u^ package NetFox; Em.? W]*wxzf!5z &
='uAw public class TestMethod { K|1^?#n <?nr"V Vis?cuU/ public TestMethod() E0h!%/+-L { ///xx/weblogic60b2_win.exe kI;^V try{ WK^qYfq| SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Tp6ysjao //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); nMbV{h , SiteFileFetch fileFetch = new SiteFileFetch(bean); #5I "M WA fileFetch.start(); t[
MRyi)LF } ?^+|V,< catch(Exception e){e.printStackTrace ();} q
B2#EsZ 1Q$ M/} xX>448= } U)o8Tr ?8nG F%p Zj^H3h public static void main(String[] args) Ek.j@79 { RGKJO_*J2 new TestMethod(); QBo^{], } tr} $82Po } wLbnsqa 点击下载更多相关资料
|