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/* ;O1jf4y **SiteFileFetch.java A@Q6}ESD */ >yr;Y4y7K package NetFox; :2H]DDg( import java.io.*; K\wu9z8M import java.net.*; T;5VNRgpI *v%gNq -.r"|\1X public class SiteFileFetch extends Thread { yUWc8]9\W D_?Tj ~r?tFE*+ SiteInfoBean siteInfoBean = null; //文件信息Bean KTt+}-vP^ long[] nStartPos; //开始位置 !zt>& t long[] nEndPos; //结束位置 `-%dHvB^R FileSplitterFetch[] fileSplitterFetch; //子线程对象 Cu5_OJ long nFileLength; //文件长度 cpl Ny?UIC boolean bFirst = true; //是否第一次取文件 Ux1j +}y boolean bStop = false; //停止标志 '$Z@oCY# File tmpFile; //文件下载的临时信息 [ )
0JI6 DataOutputStream output; //输出到文件的输出流 VH4wsEH] i3mw.`7 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ZJW8S public SiteFileFetch(SiteInfoBean bean) throws IOException uB^"A ;0v { %19~9Tw siteInfoBean = bean; pdm(7^ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ,}\LC;31, tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); n-2!<`UFX if(tmpFile.exists ()) tH&eKM4G { [<5/s$,i bFirst = false; yZ 7)|j read_nPos(); b1>]?. } .rG~\Ws else A9N8Hav { oexTz[ nStartPos = new long[bean.getNSplitter()]; R(pQu!
K4 nEndPos = new long[bean.getNSplitter()]; P>u2""c } fPHV]8Ft| 0<:rp]<, Kp*3:XK f[D%( } ," 5HJA4 T[^&ZS]s EcX7wrl9x public void run() T59FRX { ]KEE+o //获得文件长度 Q|P
M6ta //分割文件 4W|cIcU
W //实例FileSplitterFetch @{#'y4\> //启动FileSplitterFetch线程 P=1Ku|k //等待子线程返回 WY QVe_<z: try{ iDX<`) if(bFirst) 50|nQ:u, { (tq);m& nFileLength = getFileSize(); \a7m!v if(nFileLength == -1) IJKdVb~ { c~/poFj System.err.println("File Length is not known!"); n$NM } S"@6, else if(nFileLength == -2) 3 ^x&G?) { :Cezk D& System.err.println("File is not access!"); QHja4/ } WF*j^ %5 else xjF>AAM_Px { ~:k
r;n2 for(int i=0;i<nStartPos.length;i++) )7!,_r { %QrO Es nStartPos = (long)(i*(nFileLength/nStartPos.length)); ^!C
} 4YI6& for(int i=0;i<nEndPos.length-1;i++) c%O97J.5b { }"nm3\Df nEndPos = nStartPos[i+1]; )MSCyPp5 } A$7K5 nEndPos[nEndPos.length-1] = nFileLength; J"<
h#@` } k"%JyO8Y } Nt]nwae>A ^t71${w## GIkeZV{4} //启动子线程 Ct?xTFb fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; [O'aka
Q for(int i=0;i<nStartPos.length;i++) Y@k=m )zE { _-H,S)kI` fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Vt \g9-[ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?Fl O,|
nStartPos,nEndPos,i); 9{geU9&Z Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); nh0gT>a>@ fileSplitterFetch.start(); <+r~?X_ } p5OoDo // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `Ix`/k} siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); !5h-$; // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 'AWWdz nEndPos = " + nFileLength); i;/;zG^=_ // fileSplitterFetch[nPos.length-1].start(); 9=6BQ`u UroC8Tm g~,iWoY //等待子线程结束 t' J4zV //int count = 0; ,SIGfd //是否结束while循环 |:4W5>sfg boolean breakWhile = false; (pM&eow} ^fsC]9NS _g9j_
x:= while(!bStop) -DJ,<f*$ { z79oj\&[ write_nPos(); x!W5'DO Utility.sleep(500); /&G|.Cx breakWhile = true; ltU{P|7!E +:jv )4^O 6Y6t.j0vN. for(int i=0;i<nStartPos.length;i++) Y1>OhHuN { RTbV!I if(!fileSplitterFetch.bDownOver) _*g.U=u { Z8/.I breakWhile = false; ^V9|uHOJoq break; AB0}6g^O } ~.J*_0~Ze } -R1;(n) if(breakWhile) gaNe\ break; _,v?rFLE B 5qy4MFWs e2G;_: //count++; pRxVsOb //if(count>4) FIAmAZH}_ // siteStop(); Isvb;VT9L } pbqk T*Ge67 4JXvP1` System.err.println("文件下载结束!"); w'_|X&@H } fWW B]h catch(Exception e){e.printStackTrace ();} m+7%]$ } ts_|7Ev !2&)6SL/ Khv}q.)F //获得文件长度 {*g{9` public long getFileSize() P_mP ^L { `-cw[@uD int nFileLength = -1; bQ
0Ab"+D try{ sUR5Q/Q URL url = new URL(siteInfoBean.getSSiteURL()); FqGMHM\J HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); )M Tf httpConnection.setRequestProperty("User-Agent","NetFox"); yP} |8x _
M B/p kef%5B int responseCode=httpConnection.getResponseCode(); 50A\Y)i_mZ if(responseCode>=400) 0wSy[z4V { f-H"|9 processErrorCode(responseCode); v@2@9/ return -2; //-2 represent access is error %qE"A6j } @}waZ?' +>2.O2)%q </5 String sHeader; wL]#]DiE ob9od5Rf 2?:OsA} for(int i=1;;i++) (d,OLng { 8yDsl //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^r(]S% //Utility.log(in.readLine()); 8KkN
"4' sHeader=httpConnection.getHeaderFieldKey(i); PA*k| if(sHeader!=null) ?UIW&*h} { Z 5P4 H if(sHeader.equals("Content-Length")) l=Jw6F+5 { pV\ >? nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); N7}3?wS break; 7B5b
+ } PBE i"`i } -bSM]86 else Pf?&ys6 break; CK|AXz+EN } ^5?|Dj } #cW:04 catch(IOException e){e.printStackTrace ();} xX{Zh;M&[ catch(Exception e){e.printStackTrace ();} ]mNsG0r6 Oi$1ma xT m!^$_d\%~ Utility.log(nFileLength); Uugq.'> R^$EnrY(< =b1
y*? return nFileLength; aMkuyqPf{ } ySDo(EI4 N'l2$8 7)2Q //保存下载信息(文件指针位置) Rg46V-"d,@ private void write_nPos() (JjxrZ+L { #D?w,<_8, try{ tu{paQ output = new DataOutputStream(new FileOutputStream(tmpFile)); aTvLQ@MQ output.writeInt(nStartPos.length); P\{s C6E for(int i=0;i<nStartPos.length;i++) ^'Rs`e { 9jx>&MnWs // output.writeLong(nPos); 9&C8c\Y output.writeLong(fileSplitterFetch.nStartPos); z?kE((Ey output.writeLong(fileSplitterFetch.nEndPos); ]:T:cO0_n } y@2"[fo3~ output.close(); KyP@ hhj } ''! j:49 catch(IOException e){e.printStackTrace ();} q@VIFmqY! catch(Exception e){e.printStackTrace ();} nox-)e } saQo]6# aM#xy6:XG dNqj | Vu //读取保存的下载信息(文件指针位置) )$a6l8
private void read_nPos() E KN<KnU% { K&gE4;> try{ $83Qd DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,VUOsNN4\ int nCount = input.readInt(); KIWHn_ : nStartPos = new long[nCount]; -*ZQ=nomN nEndPos = new long[nCount]; xdaq` ^Bbt for(int i=0;i<nStartPos.length;i++) d|~'#:y@ { @;{ZnRv14 nStartPos = input.readLong(); x{So nEndPos = input.readLong(); '0_W<lGB } $rbr&TJ input.close(); T?jN/}qg } tO1k2<Z"Y& catch(IOException e){e.printStackTrace ();} 4 CiRh catch(Exception e){e.printStackTrace ();} Hv:~)h$ } ^ u0y<kItX 4 2,dHYdt u% 1JdEWZd private void processErrorCode(int nErrorCode) Yb[)ETf^ { pa?AKj] System.err.println("Error Code : " + nErrorCode); rTJqw@]#WH } H+gB| J_|%8N{[x 3KkJQ5a //停止文件下载 3|)cT1ej public void siteStop() \S?-[v*{ { fT?m~W^ bStop = true; 6e5A8e8"] for(int i=0;i<nStartPos.length;i++) w_~tY*IwB fileSplitterFetch.splitterStop(); =1)9>= } asy:[r" zA$ f$J7\^ } 1E4`&? } GN5* //负责部分文件的抓取 %=s2>vv9 **FileSplitterFetch.java E6T=lwOZ */ 2pSp(@N3 package NetFox; VtU2& M-+!z5q~d *qm>py`O import java.io.*; C+t|fSJ import java.net.*; Z3u6m0! sE{5&aCSR n3eWqwQ$5 public class FileSplitterFetch extends Thread { Y[rCF=ZVH od,,2pwK+ U!BZsVx String sURL; //File URL ,LLx&jS long nStartPos; //File Snippet Start Position &Akw V- long nEndPos; //File Snippet End Position =W"T=p*j int nThreadID; //Thread's ID !kh: zTP boolean bDownOver = false; //Downing is over <9$Pl%: boolean bStop = false; //Stop identical qzZ;{>_f
FileAccessI fileAccessI = null; //File Access interface oGbh* "dYT>w BPOT!- public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException <@4V G { ).Iifu|ks this.sURL = sURL; >*+n`"6 this.nStartPos = nStart; ~Xr[d07bC this.nEndPos = nEnd; pMAFZfte!x nThreadID = id; >,)U46 fileAccessI = new FileAccessI(sName,nStartPos);//定位 *lheF>^ } NNJQDkO-I +OSSgY$ j!0-3YKv public void run() x%W~@_ { mr]~(]B?r while(nStartPos < nEndPos && !bStop) l6MBnvi { a%an={ 5~#oQ& !#
xi^I try{ u,`V%J?vW URL url = new URL(sURL); Aaz:C5dtU HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); D&],.N httpConnection.setRequestProperty("User-Agent","NetFox"); c%
?@3d String sProperty = "bytes="+nStartPos+"-"; P/k#([:2 httpConnection.setRequestProperty("RANGE",sProperty); G \$x. Utility.log(sProperty); =4!m]*y mWLi XKnb 4JH^R^O<n
InputStream input = httpConnection.getInputStream(); U:PtRSdn!b //logResponseHead(httpConnection); e%9zY{ABR% l Yj$3 o nv0gb/J byte[] b = new byte[1024]; 2@N-#x' int nRead; Dj0D.}`~ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) oXVx9dZ { QV#HN"F/K nStartPos += fileAccessI.write(b,0,nRead); uFvR(LDb&g //if(nThreadID == 1) 3?!c<^"e // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ]&='E.f } e_S,N0 jF#Dc[* 1@~ 1vsJ Utility.log("Thread " + nThreadID + " is over!"); eG.s|0` bDownOver = true; "412w^5[T //nPos = fileAccessI.write (b,0,nRead); Tg=P*HY6 } Tx'anP catch(Exception e){e.printStackTrace ();} x69RQ+Vw } l @E
{K| } fP\*5|7%R -BwZ ,~Lx7 5{ //打印回应的头信息 (H]NL public void logResponseHead(HttpURLConnection con) DW)81*~g { 9R[PpE'' for(int i=1;;i++) f]Rh<N$ { >LVGNicQ String header=con.getHeaderFieldKey(i); 3A! |M5 if(header!=null) xxC2 h3 //responseHeaders.put(header,httpConnection.getHeaderField(header)); p@@*F+ Utility.log(header+" : "+con.getHeaderField(header)); <?Z]h]C^o else I &%
Z*H break; =&: |a$C } uj)fah?Wg } idjk uB(6 v++&% {~'Iu8TvZ public void splitterStop() O`9vEovjs { 1V,DcolRY bStop = true; Jgq#m~M6 } 1T4#+kW& b
|ijkys rWN%j)#+ } *qr>x8OGp *c(YlfeZ# q5)
K /* E$v!Z; A **FileAccess.java r#J_;P{U *//文件访问(定位,写) pMf
?'l package NetFox; ]#'&x%m import java.io.*; 5'|W(yR} ;[:IC^9fv ~L_1&q^4!i public class FileAccessI implements Serializable{ $h
>rs ~bw=;xF{3 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 wF*9%K'E RandomAccessFile oSavedFile; "9NWsy}<c long nPos; K}Q:L(SSr\ Fj`K$K? {_Fh3gjb/ public FileAccessI() throws IOException Ia[<;":U { mPo.Z"uy7 this("",0); gz Dfx&.0 } 1q|iw ?YF2Uc8z%2 +iNp8 public FileAccessI(String sName,long nPos) throws IOException E!=Iz5 { Ns\};j?TU* oSavedFile = new RandomAccessFile(sName,"rw"); (543`dqAmC this.nPos = nPos; 0~Xt_rN]( oSavedFile.seek(nPos); 1c*;Lr.K } u Vo"_c w Q&w"!N l.BiE<& public synchronized int write(byte[] b,int nStart,int nLen)
c^z)[ { qu;$I'Ul% int n = -1; C4
-y%W"P try{ `yC[Fn"E^ oSavedFile.write(b,nStart,nLen); HNLr}
Y j n = nLen; Dnd } MieO1l catch(IOException e) x-b}S1@ { @yF>=5z: e.printStackTrace (); blkPsp)m" } bicbCC6kC $dsLU5]1o /RWD\u<l return n; 4rpry@1 } Fv:x>qZr@ ~G.MaSm (g1Op~EM } b&RsxW7 9!ARr@ ; O.{ /* 6lUC$B Y **SiteInfoBean.java 7/)0{B4U' */ =JxEM7r package NetFox; t~":'le`zr 8=g~+<A p ^9o*k`u public class SiteInfoBean { ZWKvz3Wt (&X/n=UI KWM}VZY:Z private String sSiteURL; //Site's URL Af}o/g private String sFilePath; //Saved File's Path |<uBJ-5 private String sFileName; //Saved File's Name g@Rs.Zq private int nSplitter; //Count of Splited Downloading File 7JBr{3;eS v<mSd2B* apnpy\in public SiteInfoBean() 4E+8kz' {//nSplitter的缺省值为5 C 1)+^{7ef //default value of nSplitter is 5 2#s8Dxt this("","","",5); $UpWlYwG } 5tEkQ(Ei8 S WyJ` n$ E$@ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 3 Zwhv+CP[ { _9?v?mL5; sSiteURL= sURL; 5f2=`C0_ sFilePath = sPath; }'Ph^
%ox sFileName = sName; x{/-&`F this.nSplitter = nSpiltter; /)<kG(Z .kJu17! >;%LW}
% } J|VDZ# c7 Y' 5X4Ks| ja(ZJ[<` public String getSSiteURL() Y=y
0`?K { QP>F *A
return sSiteURL; 8~g~XUl } Rm~8n;7oOr ?8;WP& <;cch6Z public void setSSiteURL(String value) fUZCP*7> { D}UgC\u sSiteURL = value; 1K'cT\aFm } "~Zdv}^xS md|I?vk $x#qv1 public String getSFilePath() uO1^nK { ZP-9KA$" return sFilePath; ]cWQ9 } D%6}x^`Qk wNUcL*n H}(WL+7 public void setSFilePath(String value) rje;Bf { '2rSX[$tf sFilePath = value; u`Kc\BSn } ft0tRv(s: 12Fnv/[n'K 7uOtdH+ public String getSFileName() fJe5
i6`( { ^ (J%)&_\3 return sFileName; T7l,}G } p4kK"
\ln 7Q,<h8N\5 u#Bj#y! public void setSFileName(String value) ]I]G3 e { CZ%KC$l.5 sFileName = value; uLNOhgSUf } 4w]<1V gADqIPu] fgHsg@33N public int getNSplitter() Cv
p#=x0 { #Yy5@A}`o return nSplitter; 3_T'0x\FP } u=E &jL5U Ec }9R3 m , 10+Sh public void setNSplitter(int nCount) iTF%}( { yA7O<p+ nSplitter = nCount; \Rha7O } llCE}Vdh } (&, E}{p9 x}x )h3e )*7{%Ilq /* 4`7~~:W!M5 **Utility.java $XKUw"% */ `V.tqZF package NetFox; ?DnQU"_$ ~bis!(}p- 0rif,{" public class Utility { >:0N)Pj auM1k] 7
Rc/<,X public Utility() ?q0a^c?A^ {
uwt29 M3dUGM ZvK3Su)f1 } @(."[O: TT){15T;" //线程睡眠 qR
,
5 public static void sleep(int nSecond) dkg+_V! { @9k3}x K try{ h,K&R8S Thread.sleep(nSecond); pTJ_DH } ?wjk=hM2 catch(Exception e) +LF=oM< { PI8ag e.printStackTrace (); h-o;vC9fC } e"Z,!Q^-L } CM`Q(( +.$:ZzH# //日志 2Ns<lh public static void log(String sMsg) $0]5b{i] { 9N|JI3*41 System.err.println(sMsg); Eh"Y<]$ } ?pA_/wwp e`5:46k| =Hj3o_g- public static void log(int sMsg) -ilhC Y@M { vJW`aN1<I3 System.err.println(sMsg); h}S2b@e| } 4&6cDig7*2 } P)ne^_
-'i[/{ h[C XH" /* 5Iv" **TestMethod.java ]0{,P
! */ =E~_F>SD package NetFox; *6v5JH&K cc"<H}g>` \`8F.oZ^) public class TestMethod { {4%ddJn[.) E>"SC\#7 "`w*-O public TestMethod() viVn { ///xx/weblogic60b2_win.exe =
@FT$GQ try{ u4[JDB7tH SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5);
Fo]]j= //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); bnE&-N* SiteFileFetch fileFetch = new SiteFileFetch(bean); LI"N^K'z fileFetch.start(); /4+*!X } YT@H^= catch(Exception e){e.printStackTrace ();} va.Ve# N )P.,h&h/ [c99m:*+ } sr:hRQ27 rj<-sfs >waA\C} public static void main(String[] args) _G)x\K]N { -1R7 8(1 new TestMethod(); 2%]#rZ
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