-
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
|
/* p~8~EQFj **SiteFileFetch.java ,dVCbAS@ */ (la<X<w package NetFox; sx]?^KR: import java.io.*; uTl:u import java.net.*; /kw4":{] CCEx>*E6c ^OBaVb public class SiteFileFetch extends Thread { W77JXD93 &V=54n=O? :ZL>JVk SiteInfoBean siteInfoBean = null; //文件信息Bean l*v([@A\ long[] nStartPos; //开始位置 3~cOQ%#]4 long[] nEndPos; //结束位置 7Ck;LF}>0 FileSplitterFetch[] fileSplitterFetch; //子线程对象 =\XAD+ long nFileLength; //文件长度 'oT}jI boolean bFirst = true; //是否第一次取文件 d:pp,N~2o boolean bStop = false; //停止标志 h.?[1hT4R File tmpFile; //文件下载的临时信息 G0Wd"AV+ DataOutputStream output; //输出到文件的输出流 zl:
u@!' \B}W(^\wg; //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) c<DYk f public SiteFileFetch(SiteInfoBean bean) throws IOException Ra{B8)Q { k oHY
AF siteInfoBean = bean; @\"*Z&]8z0 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); c hd${
j tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); _O!D*=I if(tmpFile.exists ()) >}4]51s { Q}=RG//0* bFirst = false; 3Aj_,&X.@( read_nPos(); Ro<!n>H } eGTK^p else |iwTzlt*# { g$ 2M|Q nStartPos = new long[bean.getNSplitter()]; /vPb nEndPos = new long[bean.getNSplitter()]; Iyc')\W& } -:~`g*3# `PW=_f={ 5t<]|-i! #>- rKv.A } dt \O7Rjw8 <oXsn.'\ =d5!O~}r> public void run() W^Rb~b^? { 9~; Ju^b //获得文件长度 H]-W$V
//分割文件 ?s?uoZ /2 //实例FileSplitterFetch QE #$bCw //启动FileSplitterFetch线程 J<BdIKCma //等待子线程返回 \
yOZ&qU try{ 4O`h%`M if(bFirst) z5vryhX_Z { EmUxM_T/2 nFileLength = getFileSize(); {``}TsN if(nFileLength == -1) ?+|tPjg$ { U3V<ITZI8t System.err.println("File Length is not known!"); 6)3eB{$; } =#^dG''*" else if(nFileLength == -2) L|Ydd!m { sN g"JQ System.err.println("File is not access!"); ZH}NlEn } A;|DQR() else uLCU3nI { u!-eP7;7 for(int i=0;i<nStartPos.length;i++) 0*AlLwO { ZF
t^q/pw nStartPos = (long)(i*(nFileLength/nStartPos.length)); r{TNPa6! } ,9pi9\S for(int i=0;i<nEndPos.length-1;i++) v8@dvT< { ?oJ~3Kg nEndPos = nStartPos[i+1]; 5&kR1Bp#- } #
R&[+1=9j nEndPos[nEndPos.length-1] = nFileLength;
vXvV5Oq } .Ep3~9TBW } -J30g\ FGH>;H@ M/DTD98'N //启动子线程 :3t])mL# fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; >ahj|pm for(int i=0;i<nStartPos.length;i++) j41:]6 { z
K(5&u fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), NN:TT\!v siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ;MMFF { nStartPos,nEndPos,i); </=PN1=A Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); c[y8"M5 fileSplitterFetch.start(); U .Od } bGJUu# // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 5QSmim siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); @j
(jOe // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", :kVV.a#g nEndPos = " + nFileLength); nGbrWu]w // fileSplitterFetch[nPos.length-1].start(); sy?>e*-{ !kcg#+s91 B1M/5cr. //等待子线程结束 FSmi.7 //int count = 0; Za6oYM_z //是否结束while循环 Hj\~sR$L- boolean breakWhile = false; z3C^L ul?BKV+3E #~+#72+x7 while(!bStop) asi1c
y\ { X]fw9tZ write_nPos(); u J`&hX Utility.sleep(500); S8=4C`> jf breakWhile = true; k:TfE6JZ SRTpE, 8Vn6* Xn for(int i=0;i<nStartPos.length;i++) }$)<k { ?R(3O1,v^ if(!fileSplitterFetch.bDownOver) :#/bA& { 5);#\&B breakWhile = false; J qUVGEg break; e%U*~{m+ } nB5[]x' } *lK4yI*%o if(breakWhile) 4BT`|(7 break; 2mUu3fZ _}&]`,s> h Nle;&*F //count++; JB+pFBeY //if(count>4) nnG2z@$- // siteStop(); ?6QJP|kE } hwzUCh 5! g#4gGhI iy]}1((hR System.err.println("文件下载结束!"); $3TTHS o } !I[n|r " catch(Exception e){e.printStackTrace ();} 7fay:_ } 32iI :u JF*g!sV% f}X8|GlBo //获得文件长度 m-8 9nOls public long getFileSize() .A\ \v6@ { xp&!Cl>C3\ int nFileLength = -1; @?m8/t9. try{ mr!I}I7x&x URL url = new URL(siteInfoBean.getSSiteURL()); \.c
)^QQ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Hg`{9v httpConnection.setRequestProperty("User-Agent","NetFox"); mM}Ukmy |T_Pz&- @vYmkF` int responseCode=httpConnection.getResponseCode(); YfwJBzD if(responseCode>=400) 0s|LK { Qs9 U&*L processErrorCode(responseCode); rk/
c return -2; //-2 represent access is error X u):.0I } dz|*n'd $NT9LtT@K !Blk=L+p String sHeader; o#xg:m_py ;a&:r7]= oKi1=d+T for(int i=1;;i++) (AG { r^t{Ii~ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); DME?kh>7 //Utility.log(in.readLine()); X-1Vp_(,TP sHeader=httpConnection.getHeaderFieldKey(i); qb4;l\SfT if(sHeader!=null) $Je"z]cy- { -FN6sNvIh if(sHeader.equals("Content-Length")) 'd^gRH<z {
9JV
3 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); EQJ_$6 break; "O[76}I+.q } ^<\} Y } h.$__Gs else ky[Xf -9# break; .crM!{<Y } kc'0NE4oq } %Z[/U catch(IOException e){e.printStackTrace ();} \TB%N1^ catch(Exception e){e.printStackTrace ();} 5^K#Tj ;2 fq'Xy9L 0? us]lx Utility.log(nFileLength); r?nV
Sb|[ SP*JleQN 'ZH<g8:=@ return nFileLength; (kQ.tsl } (+LR u1z 0BB@E(* 6
2`PK+ //保存下载信息(文件指针位置) NWHH.1| private void write_nPos() yVI;s|jG { tOg
8L2 try{ DRW.NL o output = new DataOutputStream(new FileOutputStream(tmpFile)); i!W8Q$V output.writeInt(nStartPos.length); S@xsAib0J for(int i=0;i<nStartPos.length;i++) z|]oM#Gt { !mxh]x<e // output.writeLong(nPos); o9LD6$ output.writeLong(fileSplitterFetch.nStartPos); %<C
G|]W output.writeLong(fileSplitterFetch.nEndPos); F|Dz]ar } ]jVSsSv output.close(); pOVghllO } zrU$SWU catch(IOException e){e.printStackTrace ();} .Spi$>v catch(Exception e){e.printStackTrace ();} QHzX
5$IM }
.x!7 StZRc\k >3`ctbe //读取保存的下载信息(文件指针位置) nqxq@.L2 private void read_nPos() BgWz<k}5M { sRyw\v-=P try{ PyT}}UKj: DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); "56?/ jF int nCount = input.readInt(); +B q}> nStartPos = new long[nCount]; gLaO#cQ% nEndPos = new long[nCount]; jqGo-C~ for(int i=0;i<nStartPos.length;i++) 0"^oTmQN { aT1CpY=T|. nStartPos = input.readLong(); ah/6;,T nEndPos = input.readLong(); UI<PNQvo9 } nE,gQHw input.close(); 6Sb'Otw. } bj7MzlGFy catch(IOException e){e.printStackTrace ();} ]EM)_ :tRf catch(Exception e){e.printStackTrace ();} UiK+c30FU } *lerPY3 q ]PzTl {] y/}VtD private void processErrorCode(int nErrorCode) c_z/At;4 { {|5$1v System.err.println("Error Code : " + nErrorCode); ?]\W8) } Vr-3M+l=O L`\`NNQC *mQDS.'AB@ //停止文件下载 RC8)f8n public void siteStop() QFNz9c { ^?6
W< bStop = true; t$y&=v for(int i=0;i<nStartPos.length;i++) q3x;_y^ fileSplitterFetch.splitterStop(); Q}Ze-JIL$ Ie2w0Cs28 .hQ3A" } =tf@4_ } [)H,zpl //负责部分文件的抓取 11B{gUv.] **FileSplitterFetch.java Y-%l7GErhL */ mF*?e/ package NetFox; /h7>Z9T 6t_ 3%{ DYAwQ"i;6 import java.io.*; uq|vNLW26 import java.net.*; Lov.E3S6; %89"A'g P )t]bS public class FileSplitterFetch extends Thread { n~,]KdU] 8sR {(M&-~Yh String sURL; //File URL Zr.\`mG4f long nStartPos; //File Snippet Start Position h{W$ fZc< long nEndPos; //File Snippet End Position }
T/}0W]0 int nThreadID; //Thread's ID (RDa,& boolean bDownOver = false; //Downing is over rysP)e boolean bStop = false; //Stop identical )e|$K=
D FileAccessI fileAccessI = null; //File Access interface [ GR|$/(z= FtFv<UV +H[}T ] public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException s`Yu"s
8}4 { iJ`%yg, this.sURL = sURL; v7o?GQ75 this.nStartPos = nStart; >J^7}J this.nEndPos = nEnd; *`+<x nThreadID = id; ;!l*7}5X= fileAccessI = new FileAccessI(sName,nStartPos);//定位 #gX%X~w$F } vz;7} Zj] A*\o
c a%Z4_ToLZ public void run() IS,zy+w { DnNt@e2| while(nStartPos < nEndPos && !bStop) Hi; K"H]x1 { OX)#F'Sl} #MhNdH# < v|%K.yd try{ |t4Gz1"q=8 URL url = new URL(sURL); Tn4W\?R HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $z2xZqe httpConnection.setRequestProperty("User-Agent","NetFox"); 9{)Z5%Kz String sProperty = "bytes="+nStartPos+"-"; c$,c`H(~ httpConnection.setRequestProperty("RANGE",sProperty); [Krm .) Utility.log(sProperty); t4f
(Y,v zB#_:(1qK U{T[*s InputStream input = httpConnection.getInputStream(); BKE\SWu //logResponseHead(httpConnection); ~rgf{oGz C<[d w8 ?Pb$Fe byte[] b = new byte[1024]; mP9cBLz int nRead; C1X}3bB while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) d98))G~W { &Pu+(~'Q nStartPos += fileAccessI.write(b,0,nRead); b$dJ?%W //if(nThreadID == 1) 5nM kd/ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); |MTpU@`p5 } ruZYehu1W uSABh^ pT("2:)x Utility.log("Thread " + nThreadID + " is over!"); V*6l6-y~Ih bDownOver = true; v2/yw, //nPos = fileAccessI.write (b,0,nRead); gHQPhe#n } TqS2!/jp catch(Exception e){e.printStackTrace ();} /hm84La } u:_sTfKm& } [NHg&R H [kPD`be2# QuSV&>T\ //打印回应的头信息 8g<Q5( public void logResponseHead(HttpURLConnection con) ?!bd!:(N { vC)"*wYB{ for(int i=1;;i++) X}zX`]:I' { Pv< QjY String header=con.getHeaderFieldKey(i); M0cd-Dn if(header!=null) ~A^E //responseHeaders.put(header,httpConnection.getHeaderField(header)); G;2R]H#p Utility.log(header+" : "+con.getHeaderField(header)); -Nsk}Rnk* else siZr@g !L break; C-Nuy1o } SV$nyV
} TRF]i/Bs fA"<MslKLK -h>Z,-DE6 public void splitterStop() r0)JUc}Fyq { 8 ne/=N|, bStop = true; 1S+;ZMk } >F/XZC f"vk# 3 v2Dt3$@H6 } 8{R&EijC ?TIV2m^? w?kGi>7E /* [dl+:P:zc **FileAccess.java Ee{ `Y0 *//文件访问(定位,写) i~9?:plS package NetFox; ETM2p1ru0 import java.io.*; K@q&HV"'. qOW#Q:T 8V6=i'GK public class FileAccessI implements Serializable{ *%:@
cbF-M &svx@wW //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 RG&I\DTyt RandomAccessFile oSavedFile; }-d)ms! long nPos; #"::
'?, fi=0{ dw~[9oh public FileAccessI() throws IOException ^uia`sOP4 { a* D,*C5} this("",0); v9u<F6 } ERF,tLa! w'A tf '0]r<O public FileAccessI(String sName,long nPos) throws IOException E_~x==cb { Yg/}ghF\ oSavedFile = new RandomAccessFile(sName,"rw"); q7|:^#{av this.nPos = nPos; J5;5-:N oSavedFile.seek(nPos); xZX`%f- } W$r^ @c Z\*,T fb23J|" public synchronized int write(byte[] b,int nStart,int nLen) t\zbEN { 7skljw( int n = -1; ZT6V/MD7T. try{ 0x\2#i oSavedFile.write(b,nStart,nLen); 7!pLK&_ n = nLen; (qUK7$ } cQX:%Ix= catch(IOException e)
}g>kpa0c { Y=E9zUF e.printStackTrace (); Rv,82iEKs } qYK4)JP @M=$qO_$9 IhE9snJ[ return n; (VyA6a8 } T'.[F
rIVvO )Ob]T{GY } 3E,DipHg FqwIJ|ct \ZMP_UU( /* wFvT0 **SiteInfoBean.java Cc!J1) */ s O=4IBE package NetFox; HMV)U{ :N2E}hxk W .U+.hR public class SiteInfoBean { T^]7R4Fg /YFa
;2 W Q/py qe G private String sSiteURL; //Site's URL qEQAn/& private String sFilePath; //Saved File's Path b,Ke>.m private String sFileName; //Saved File's Name Nt~x&s private int nSplitter; //Count of Splited Downloading File ^LVk5l)\>g Um z05* y@3Q;~l, public SiteInfoBean() ePEe?o4; {//nSplitter的缺省值为5 :m Kxa //default value of nSplitter is 5 paWxanSt this("","","",5); TGf;_)El } XFQNr` m;o4Fu ($62o&I public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) *g_w I%l { UW6VHA> sSiteURL= sURL; 26.)U r<F sFilePath = sPath; e[{mVhg4E sFileName = sName; 'w.}2( this.nSplitter = nSpiltter; ,hWcytzEw =IZ[_ /@ RBE7485 } 4&{!M
_ &s8<6P7 #byJqy&e public String getSSiteURL() ?v4E<iXs { K(VW%hV1 return sSiteURL; d2~l4IL)~ } XQ?fJWLU
\GL*0NJ b+{r!D}~ public void setSSiteURL(String value) \}#@9= { Z5B/|{ sSiteURL = value; mj2Pk,,SA } Nqcp1J" z)}!e,7 9i=B public String getSFilePath() ? %(spV { CZ(`|;BC* return sFilePath; k!3 cq) } GoIQ>n O~PChUU*Y . I==-| public void setSFilePath(String value) \u M? S { s bnjy"Z% sFilePath = value; }pawIf4V } RlRs}yF 3vW4<:Lgy :q
(&$ public String getSFileName() ',)7GY/n~ { g^l RG3a return sFileName; Ur!~<4GO } eT[&L @l]b %>zjGF< f~ZEdq8 public void setSFileName(String value) hw=GR_, { 89HsPB1"t sFileName = value; #jA) >z\Q^ } ,j178EX ?djQZ* opp!0:jS* public int getNSplitter() pRi<cO { C6jR=@42Q return nSplitter; zN!j%T.e
} +Gh7^v|" Qxa{UQh}9 D4Etl5k public void setNSplitter(int nCount) (=c1 { N3%*7{X
9 nSplitter = nCount; q0./O|Dj } .H~YI } 7\Fs=\2l+' b>11h fS=hpL6]@ /* O{]9hm(tN **Utility.java JOD/Raq.1k */ 57Z- package NetFox; h`Tz5% n L/Vx~r`P (9C<K< public class Utility { Kat&U19YH 7L3ik;> Y;
).+si public Utility() gl7|H&&xV { Y)|N"f; .`p&ATgv {5j66QFoo } fex,z%}p -VT+O+9_A //线程睡眠 )L5i&UK. public static void sleep(int nSecond) X.FGBR7=q { w>e
s try{ igC_)C^i> Thread.sleep(nSecond); c#cx>wq9 } k)7{Y9_No catch(Exception e) X}A'Cg0y { V/%~F6e e.printStackTrace (); V diJ>d[ } #FH[hRo=6 } "r'ozf2\ s?C&s|'. //日志 @xAfZb2 E public static void log(String sMsg) z#6?8y2- { ,d_Gn! System.err.println(sMsg); .iwZ*b{ } &
,hr8 YY5!_k y~
rXl public static void log(int sMsg) DAO]uh{6 { %)(Cp-b! System.err.println(sMsg); 3n;K!L%zMT } K8I$]M } v]VWDT
` 1iBP,:>* jZ*WN|FK? /* rS8 w\`_ **TestMethod.java ~O6\6$3b5E */ nH-V{=** package NetFox; $XnPwOj # Su~`] Zjh2{ : public class TestMethod { cr;`Tl~}s ,5Vt]#F5@ [1yq{n= public TestMethod() ;2xO`[# { ///xx/weblogic60b2_win.exe R[B?C;+(O try{ 5*-3?
<)e SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); gABr@>Vv //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); }^kL|qmjR SiteFileFetch fileFetch = new SiteFileFetch(bean); *m+BuGt| fileFetch.start(); \wvg,j= } +-?/e-z") catch(Exception e){e.printStackTrace ();} /e@H^Cgo 5@~|*g[ u9qMqeF } w n|]{Ww35 1GCzyBSbb Vr.Y/3N&' public static void main(String[] args) dtt ~ Bd { cC{"<fYF new TestMethod(); 0%`4px4J } :mcYZPX# } D<$XyP 点击下载更多相关资料
|