-
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
|
/* CK2 B **SiteFileFetch.java <O.Kqk*
nq */ gdl| ^*tc package NetFox; >L8?=>>?\ import java.io.*; os[ZIHph import java.net.*; L~IE,4 H#+\nT2m gc##V]OD public class SiteFileFetch extends Thread { @|BD|{k uG;?vvg> 4:D:| r SiteInfoBean siteInfoBean = null; //文件信息Bean b6|Z"{TI
_ long[] nStartPos; //开始位置 &M[MEO`t8 long[] nEndPos; //结束位置 )Nbc/nB$ FileSplitterFetch[] fileSplitterFetch; //子线程对象 _m Xs4 long nFileLength; //文件长度 %4,xx'` boolean bFirst = true; //是否第一次取文件 e8oKn& boolean bStop = false; //停止标志 fe|g3>/| File tmpFile; //文件下载的临时信息 >:2}V]/; DataOutputStream output; //输出到文件的输出流 6JSY56v P'sfi>A //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) s
D_G)c public SiteFileFetch(SiteInfoBean bean) throws IOException b4CF`BG { RAV^D. siteInfoBean = bean; '@bJlJB9> //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); '99@=3AB:` tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); GzdRG^vN if(tmpFile.exists ()) fYB*6Xb,w { .$Y?
W< bFirst = false; oE1M/*myS read_nPos(); {SJsA)9:# } )B ;M
else +oZH?N4yaM { b0 & nStartPos = new long[bean.getNSplitter()]; +Qs!Nhsq nEndPos = new long[bean.getNSplitter()]; C`NmZwL } =p q:m DVh)w}v <4c%Q) pA.._8(t } qp>N^)> 4d`+CD C +"8}R~`! public void run() yAG+] r { C',6%6P //获得文件长度 [/cIUQ //分割文件 .xl.P7@JJ //实例FileSplitterFetch +Rqbf //启动FileSplitterFetch线程 |c0, //等待子线程返回 4z_n4= try{ w>[T&0-N if(bFirst) &tj0M.- { p x#suy nFileLength = getFileSize(); =IZ[_ /@ if(nFileLength == -1) >aG= T{ { t`YWwI. System.err.println("File Length is not known!"); qnJ50 VVW } NEVp8)w else if(nFileLength == -2) _R^y\1Qu { <7'&1=%r System.err.println("File is not access!"); 'wvMH;}u } mj2Pk,,SA else ?Vc0) { Uw)=WImz[ for(int i=0;i<nStartPos.length;i++) CxDcY { a9l8{3 nStartPos = (long)(i*(nFileLength/nStartPos.length)); 8z}^jTM } AbfZ++aJ for(int i=0;i<nEndPos.length-1;i++) NYB "jKMk { . I==-| nEndPos = nStartPos[i+1]; Vb!O8xV4;+ } c-B/~& nEndPos[nEndPos.length-1] = nFileLength; /e1(?
20 } oa`#RC8N } {DwIjy31T m#\[m<F ,Dp0fauJ //启动子线程 !9]d|8! fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ,lm=M5b for(int i=0;i<nStartPos.length;i++) Z\ )C_p\- { %;|0 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), d1]i,C~Y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), H0>yi[2f nStartPos,nEndPos,i); f~ZEdq8 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); hw=GR_, fileSplitterFetch.start(); 89HsPB1"t } #jA) >z\Q^ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 1e}8LH7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 0<.RA%dj // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", "0Q1qZ nEndPos = " + nFileLength); (3;@^S4&w // fileSplitterFetch[nPos.length-1].start(); "=A>}q@;H %
frfSGf.# HBiBv-=, //等待子线程结束 ho.(v;
//int count = 0; a#[-*ou` //是否结束while循环 3FNT|QF boolean breakWhile = false; |=K_F3aJ "2{%JFE I ~$1Lu`~ while(!bStop) 4W;S=#1 { (Rd$VYuf write_nPos(); gzdG6" Utility.sleep(500); obo&1Uv,/ breakWhile = true; 80;n|nNB FTf<c0 P^)q=A8Z# for(int i=0;i<nStartPos.length;i++) jc:s` 4 { \/5RL@X} if(!fileSplitterFetch.bDownOver) |+}G|hx@9 { lzhqcL" breakWhile = false; KzO,*M break; Eu,`7iQ?( } pqR\>d0 } 3BQ!qO17^d if(breakWhile) Q5a)}6-5 break; yI3kvh u:dx;* d@ Ja}` //count++; |E3X //if(count>4) ynwG\V // siteStop(); rs;r
$ } P_Hv%g ig!7BxM)<h )r tomp:X System.err.println("文件下载结束!"); o:p
*_>& } szmmu*F,U: catch(Exception e){e.printStackTrace ();} dl~|Izm } se9>.}zZN j
!H^-d}q S\#1 7.= //获得文件长度 bC6oqF'# public long getFileSize() 9`B$V##-L { T+IF}4ed int nFileLength = -1; /)L
0`:I# try{ rcN 9.1 URL url = new URL(siteInfoBean.getSSiteURL()); (u1m]WYL HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~nY]o"8D httpConnection.setRequestProperty("User-Agent","NetFox"); }q[Bd >BVoHt~; e' 9r"<>i int responseCode=httpConnection.getResponseCode(); }}
ZY if(responseCode>=400) rS8 w\`_ { ~O6\6$3b5E processErrorCode(responseCode); nH-V{=** return -2; //-2 represent access is error $XnPwOj } >3.X? tJ0NPI56yP r 2:2,5_ String sHeader; +^|iZbZKx aSutM 0<p{BL8 for(int i=1;;i++) R.9V,R5 { j2 %^qL //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); \cJa;WM> //Utility.log(in.readLine()); PkuTg"; sHeader=httpConnection.getHeaderFieldKey(i); (5Nv8H8| if(sHeader!=null) +0l`5."d { 2?q(cpsN if(sHeader.equals("Content-Length")) "sUyHt -& { ti @kKz nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /~p+j{0L3W break; =/0=$\Ws } {w6/[-^ } `Ityi} else .ic:`1 break; OQ&'Dti } RP4Ku9hk } ~ 5"JzT catch(IOException e){e.printStackTrace ();} @OpNHQat9 catch(Exception e){e.printStackTrace ();} /0MDISQy9 *#
{z 3{+ R:aa+MX(1 Utility.log(nFileLength); V^s0fWa gb|Q%LS9R Xd
`vDgD return nFileLength; WYcA8X/ } 5e8AmY8; }2 8= 9LJZ-/Wq //保存下载信息(文件指针位置) c]k*}W3T private void write_nPos() _QOZsEe { $.%rAa_H try{ Fg]?zEa output = new DataOutputStream(new FileOutputStream(tmpFile)); sBX-X$*N output.writeInt(nStartPos.length); ^Q<mV*~ for(int i=0;i<nStartPos.length;i++) W i.5Y{ { t<iEj"5 // output.writeLong(nPos); X;F8_+Np output.writeLong(fileSplitterFetch.nStartPos); I^\&y(LJF output.writeLong(fileSplitterFetch.nEndPos); a?h*eAAc. } &EGqgNl output.close(); (.Y/ } 1 T<+d5[C catch(IOException e){e.printStackTrace ();} bPKOw< catch(Exception e){e.printStackTrace ();} y]
oaO+ } PUJ2`iP1^3 68fiG G"5D< ] //读取保存的下载信息(文件指针位置) Lo.rvt
private void read_nPos() t&q N: J { jEdtJEPa try{ T4/fdORS DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); SMr13%KN/ int nCount = input.readInt(); n{0Ld -zH nStartPos = new long[nCount]; W*DVi_\$y nEndPos = new long[nCount]; =<@2#E) for(int i=0;i<nStartPos.length;i++) !|waK~jK { ?4H#G)F nStartPos = input.readLong(); rf:XRJ<4 nEndPos = input.readLong(); VXBY8;+Yp } pO Iq%0] input.close(); eDI=nSo } 8LkP)]4^sO catch(IOException e){e.printStackTrace ();} IA zZ1#/3 catch(Exception e){e.printStackTrace ();} W<ZK,kv } ^ >x|z. qVqRf.-\ g6t"mkMY
L private void processErrorCode(int nErrorCode) /hrT { O43YY2 System.err.println("Error Code : " + nErrorCode); $q?$]k|M` } Wm~` ~P lH^^77"4Qo %.v{N6 //停止文件下载 p^kUs0$GS public void siteStop() 85:NFa@J { %sBAl.!BN bStop = true; &.13dq for(int i=0;i<nStartPos.length;i++) s'aip5P fileSplitterFetch.splitterStop(); wFh8?Z3u_ [D"t~QMr Y}*\[}l:&x } 'nQVj } o{b=9-V //负责部分文件的抓取 EJ}!F?o **FileSplitterFetch.java N]EcEM # */ 1LJuCI=~ package NetFox; gJiK+&8I vr^~yEr q LL,F import java.io.*; x&Vm!,%:1 import java.net.*; AmPMY:1i" 0kQPJWF AE`We$! public class FileSplitterFetch extends Thread { X[s8X!# ]?1Y
e8>Y< Snly UP~P String sURL; //File URL Pz#7h*;cw. long nStartPos; //File Snippet Start Position 9Ya<My long nEndPos; //File Snippet End Position 1 2++RkL# int nThreadID; //Thread's ID up3O|lj4 boolean bDownOver = false; //Downing is over -4rDbDsr boolean bStop = false; //Stop identical XfE?C:v FileAccessI fileAccessI = null; //File Access interface 1be %G [* 1axQ)},o@p &c(WE
RW?- public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException $mmup|;( { >h2%[j= this.sURL = sURL; uJHu>M}~ this.nStartPos = nStart; iI@jZVk this.nEndPos = nEnd; 02`$OTKz nThreadID = id; .#u_#=g? fileAccessI = new FileAccessI(sName,nStartPos);//定位 (6CN/A{qe } M2x[" n,HE0Zn]Y_ OH^N" L public void run() <e]Oa$ { {qW~"z*
while(nStartPos < nEndPos && !bStop) f'I z
G.R { .x`M<L#M( \;-fi.Hrf$ XoLJ L]+? try{ [ xOzzp4 URL url = new URL(sURL); ;=j@,
yu HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I$NhXZ)KT httpConnection.setRequestProperty("User-Agent","NetFox"); EV#MQM String sProperty = "bytes="+nStartPos+"-"; tt?58dm| httpConnection.setRequestProperty("RANGE",sProperty); =~Ynz7 /x Utility.log(sProperty); )#a[-.OI JXG"M#{ &
gJV{V5Ay InputStream input = httpConnection.getInputStream(); ""Zp:8o //logResponseHead(httpConnection); ^JZ^>E~ \\BCcr\l ~U(,TjJb byte[] b = new byte[1024]; Qu=LnGo~P int nRead; .6O"|
Mqb while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ri`R<l8 { _LAS~x7, nStartPos += fileAccessI.write(b,0,nRead); HkV1sT //if(nThreadID == 1) IM$2VlC // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); w{~+EolK } ms($9 Lv/ nzjkX4KV O%1v)AT&\ Utility.log("Thread " + nThreadID + " is over!"); ^JI o?R bDownOver = true; Q%/<ZC.Mz6 //nPos = fileAccessI.write (b,0,nRead); ,\ 2a=Fp } ^l^fD t catch(Exception e){e.printStackTrace ();} Q6o(']0 } R1F5-#?'E }
{7!UQrm< `r5$LaD 87}&` //打印回应的头信息 fP3_d public void logResponseHead(HttpURLConnection con) 6:U$w7P0
e { AC
O)Dt(Y for(int i=1;;i++) GV)<Q^9 { A^ _a3$,0 String header=con.getHeaderFieldKey(i); !zPG?q]3 if(header!=null) nA|.t[v //responseHeaders.put(header,httpConnection.getHeaderField(header)); S[tE&[$(p Utility.log(header+" : "+con.getHeaderField(header)); nf1#tlIJd else DjU9
uZT break; SVjl~U-^ } Xi?b]Z } pE{yv1Yg )$w*V9d r'CM public void splitterStop() r1ws1 rr= { wU#F_De)R: bStop = true; k>dsw : } bX.ja;; @i^~0A#q* p^(&qk?ut } Hk>79}; 2=?tJ2E ^:9$@+a /* >0{S **FileAccess.java U yw-2]!n *//文件访问(定位,写) s5RjIa0$7 package NetFox; pLMRwgzr import java.io.*; eI1GXQ% aNyvNEV3C oG$)UTzGc public class FileAccessI implements Serializable{ h._nK\ k{gLMl //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 C^QtSha RandomAccessFile oSavedFile; 9}B`uJ long nPos; /(O$(35 gPAX4' [2ax>Yk$ public FileAccessI() throws IOException s>0Nr { [D5t{[i this("",0); 7_2kDDW0 } <foCb%$(? %>g W9}kB #W.vX?-'0 public FileAccessI(String sName,long nPos) throws IOException &z"krM]G { jCTAKaq oSavedFile = new RandomAccessFile(sName,"rw"); +0),xu this.nPos = nPos; ~&\ f|% oSavedFile.seek(nPos); 6t/`:OZC: } SI:U0gUc &V>fYgui !v]b(z`Y public synchronized int write(byte[] b,int nStart,int nLen) %{6LUn { OMwsbp& int n = -1; A:<;M@q! try{ X=8Y% oSavedFile.write(b,nStart,nLen); I\qYkWg7 n = nLen; K[chjp!$l } pT?Q#,fh catch(IOException e) 0A{/B/r { #YDr%>j e.printStackTrace (); nC {K$ } g*w<* K78rg/` 8 6f2'o+ return n; CF|]e: } 6<0n *& ;n\= R 5. Y!6/[<r$~k } s4_/&h ?PTk1sB 3]-_q"Co4f /* `nUO l **SiteInfoBean.java l"n{.aL */ >;z<j$;F< package NetFox; PpLU [sW.CK=3 Og;-B0,A public class SiteInfoBean { EBtLzbj yfU<UQ!1 Pmi#TW3X private String sSiteURL; //Site's URL /~4"No@ private String sFilePath; //Saved File's Path %!ebO*8q private String sFileName; //Saved File's Name b|SE<\ private int nSplitter; //Count of Splited Downloading File K
~ 44i zi~5l#I ?S?2 0 public SiteInfoBean() }HEvr)v9 {//nSplitter的缺省值为5 >zkRcm //default value of nSplitter is 5 @pGZLq this("","","",5); 7FN<iI&7\ } W4;m H}#0 gn5)SP 8 K;7f?52 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) o;b0m;~ { WWT",gio sSiteURL= sURL; Gu=STb sFilePath = sPath; E{HY!L[ sFileName = sName; EkT."K this.nSplitter = nSpiltter; 5unG#szq g~UUP4<$" 4h6k`ie!$ } `RMI(zI3g.
5-)#f? >h Y"
3 public String getSSiteURL() }AZc8o- { 6io , uh! return sSiteURL; UZ8?[ } -st7_3 _ >`X]I; @v\*AYr'M public void setSSiteURL(String value) K.gEj*@ { @?C#r.vgp sSiteURL = value; * y^OV_n-8 } ,2oF:H R~bC,`Bh ,n!vsIN public String getSFilePath() a:~@CUD
>I { _w@qr\4i= return sFilePath; 7j5f ;O^+ } s=?aox7 Bh&Ew
W"L&fV+3 public void setSFilePath(String value) JcJmds { ~_9"3,~o5 sFilePath = value; (2?G:+C 7 } W:i?t8y\y X5YiFLH>y\ ThW,Y"
l public String getSFileName() 1
4LI5T { *zO&N^X.4 return sFileName; cYNJhGY } ,?
E&V_5 9>/wUQs!] HG/p$L* public void setSFileName(String value) =TR,~8Z| { Gf8s?l sFileName = value; -{h }
Lw1T 4n K[
.JlIP ,n2i@?NHZ public int getNSplitter() -#-p1^v} { 4!`bZ`_Bw return nSplitter; \EbbkN:D } Hy{
Q#fq $]aBe
!
Z?MoJ{.!?R public void setNSplitter(int nCount) x0a.!
{ df+t:a nSplitter = nCount; P`U<7xF~ } NV4g~ +n } }4co)B" 4([.xT HEK-L)S.
* /* l? #xAZx&_ **Utility.java }aB#z<B6 */ #s5 pz8v package NetFox; Ju@Q6J5 cIXwiC8t Kr L>FI public class Utility { x4Rk<Th"o \(I6_a_{ i5hD# public Utility() G@S&1=nj3 { WUAJjds fbZibcQ%k OH<?DcfeL } UVf\2\ Y IL7`0cN( //线程睡眠 jW*1E*"
public static void sleep(int nSecond) :ZdUx { ~Pk0u{,4XQ try{ %R_{1GrL'c Thread.sleep(nSecond); m$>iS@R } =fc:6JR catch(Exception e) ^ L:cjY/ { zH)_vW e.printStackTrace (); l QPqcZd } 4C~UcGMv\ } "
oy\_1| %Xh fXd' //日志 Ft%hh|$5y public static void log(String sMsg) &UAe!{E0 { lp&!lb` System.err.println(sMsg); jyW[m,#(go }
1S%k "u}9@}* -237Lx$/ public static void log(int sMsg) $%2_{m_K:p { bv?0.{Z System.err.println(sMsg); OVoO6F] } L^9HH)Jc } k/Mp6<?C: ~M?|Vn 1`r| op}, /* &ju- **TestMethod.java ,W5.:0Y;f[ */ c $;\i package NetFox;
TmEYW< y93k_iq$S !MZw#=D` public class TestMethod { ateUpGM QU q/@dR{- [_DPxM=V public TestMethod() Xer@A;c { ///xx/weblogic60b2_win.exe 7-iIay1h" try{ lhn8^hOJ/ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); :,]S}R //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); +KK$0pL SiteFileFetch fileFetch = new SiteFileFetch(bean); >POO-8Q fileFetch.start(); f~& a- } u'9gVU B catch(Exception e){e.printStackTrace ();} _&{%Wc5W~F D\L!F6taS Yt1mB[&f^ } N}/>r D 8q_0,>w% H9"= p public static void main(String[] args) oC dGQ7G} { \4~AI=aw,T new TestMethod(); HR{s&ho } 10N,?a } B<
;==| 点击下载更多相关资料
|