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/*
OJ/SYZ.r **SiteFileFetch.java -=)-s m' */ ,[`$JNc package NetFox; J#aVo&.Y import java.io.*; :c7CiP import java.net.*; ,w2WS\`% h/<=u9J tg 85: public class SiteFileFetch extends Thread { (Z-l/)Q ~HmxEk9 q4ipumy* SiteInfoBean siteInfoBean = null; //文件信息Bean kH?#B%N5 long[] nStartPos; //开始位置 P`TIaP9%E long[] nEndPos; //结束位置 [w+Q^\%bN FileSplitterFetch[] fileSplitterFetch; //子线程对象 qC@Ar)T long nFileLength; //文件长度 V=}1[^ boolean bFirst = true; //是否第一次取文件 hz\WZ^ boolean bStop = false; //停止标志 vM`~)rO@! File tmpFile; //文件下载的临时信息 !M;A*:- DataOutputStream output; //输出到文件的输出流 Sj-[%D* o| D^`Z //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) `,Orf ZMb public SiteFileFetch(SiteInfoBean bean) throws IOException ]V<-J { ssl&5AS siteInfoBean = bean; /P+q}L% //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); aB"xqh)a}T tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); K]fpGo if(tmpFile.exists ()) ut&/\k=N { KcXpH]>!9 bFirst = false; 6G_<2bO read_nPos(); >I<PO.c! } S "
pI else GGnp Pp { s@!$='| nStartPos = new long[bean.getNSplitter()]; \##5O7/1 nEndPos = new long[bean.getNSplitter()]; `ZGcgO<c\ } n%$ &=-Fk ({[,$dEa; B9M>e'H%< C;qMw-*F } p2d\ZgWD=) 9DE)S)e8 pbn\9C/ public void run() [,g~m9 { keCRvl Z4 //获得文件长度 QxpKX_@Q5 //分割文件 ai^|N.! //实例FileSplitterFetch tZho)[1 //启动FileSplitterFetch线程 `\b+[Nes //等待子线程返回 m{(+6-8|m try{ KCtX$XGL if(bFirst) ` |Fp^gM { qO()w nFileLength = getFileSize(); kGHC]Fb) if(nFileLength == -1) C1fyV] { PC/!9s0W System.err.println("File Length is not known!"); c K <)$* } -:`V< else if(nFileLength == -2) u#jC#u^M { `}8&E(< System.err.println("File is not access!"); t9u|iTY
f! } Ade}g' else (:sZ
b?* { MCnN^ for(int i=0;i<nStartPos.length;i++) x$B&L`QV { tZ8e`r* nStartPos = (long)(i*(nFileLength/nStartPos.length)); 4v.d-^ } D}{b;Un for(int i=0;i<nEndPos.length-1;i++) }ugxN0 { M-MKk:o nEndPos = nStartPos[i+1]; @ 4UxRp6+ } "J19*<~ nEndPos[nEndPos.length-1] = nFileLength; Lj
8<'"U# } w^;DG } r"]'`qP, ja T$gAx GozPvR^/ //启动子线程 7%d8D>uw8 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; n-afDV for(int i=0;i<nStartPos.length;i++) OW5t[~y] { VmvQvQ/9R fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), `;%Z N siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), yyP-=Lhmo= nStartPos,nEndPos,i); b?VV'{4 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); D>#l -{d fileSplitterFetch.start(); vg\/DbI' } 9- )qZ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), jRQ+2@n{E siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); qx)?buAij // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ALT^8c&K nEndPos = " + nFileLength);
&|o$=Ad // fileSplitterFetch[nPos.length-1].start(); d7Ro}>lp ?6N3tk-2 GDhM<bVqM* //等待子线程结束 `8g7q 5 //int count = 0; 5ukp^OxE //是否结束while循环 ;_"U "?h_J boolean breakWhile = false; S2^>6/[xM {{{#?~3$7 B6M+mx"G while(!bStop) (-^bj { xvm5 write_nPos(); Gt-UJ-RR y Utility.sleep(500); &t}?2>: breakWhile = true; M {a
# (?i[jO||B k&6I f0i for(int i=0;i<nStartPos.length;i++) M0'v&g { SaDA`JmO if(!fileSplitterFetch.bDownOver) T3,1m=S { "Ij I'c breakWhile = false; c:4P%({ break; TkRP3_b } [~mGsXV } |D#2GeBw1h if(breakWhile) 2YBIWR8z break; &xd.Qi2 6d|q+]x_n w4};q%OBj //count++; !DXNo(:r //if(count>4) HEF?mD3h // siteStop(); .qD@
Y3- } /DFV$+9 <PD?f/4 / /n5n
)P@L System.err.println("文件下载结束!"); DVp5hR_$ } 5f7zk catch(Exception e){e.printStackTrace ();} 6^F'|Wh } >)nS2bOE 0D&> Gyc*0 #%,RJMv //获得文件长度 eVz#7vqv public long getFileSize() HIc a nk { |zsbW9
W*m int nFileLength = -1; ~}9PuYaD@ try{ MmoR~~* URL url = new URL(siteInfoBean.getSSiteURL()); 6z,Dyy]tl HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); GHc/Zc"iX httpConnection.setRequestProperty("User-Agent","NetFox"); @tT-JwU Djt%r< '0aG
N<c int responseCode=httpConnection.getResponseCode(); |`O5Xs1{B if(responseCode>=400) .IrNa>J~ { ;iQEkn2T|} processErrorCode(responseCode); z%d#@w0X1 return -2; //-2 represent access is error ^_5|BT@ } :<S<f% HTjkR*E |CD"*[j] String sHeader; b'p4wE> s4LO&STh{ Rd&9E for(int i=1;;i++) @E9" Zv-$ { ;@mRo`D` //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -.I4-6~ //Utility.log(in.readLine()); v({N:ya sHeader=httpConnection.getHeaderFieldKey(i); N;sm*+r if(sHeader!=null) LO%!Z,} { cWAtju?L; if(sHeader.equals("Content-Length")) |}&RXD { aEVsU|
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); &p(0K4: break; *s4\\Wb= } =6 r:A<F!n } Do7=#|bAM else Fzq41jiS break; _
Y2
U7W } #E7AmmqD% } |+,[``d>" catch(IOException e){e.printStackTrace ();} zU5Hb2a catch(Exception e){e.printStackTrace ();} k\)Cw "h"NW[R -1|iz2^N Utility.log(nFileLength); \[:/CxP < B g8,; V\5 L?} return nFileLength; =^DLywAh}u } T?
,P*l Cr ?4Ngw l1=JrpCan //保存下载信息(文件指针位置) m#e3%150{ private void write_nPos() ,YYVj{~2 { s,]%dG! try{ @p=AWi}\ output = new DataOutputStream(new FileOutputStream(tmpFile)); J%C#V}z7E output.writeInt(nStartPos.length); *>8ce-PV for(int i=0;i<nStartPos.length;i++) dP2irC%f8 { )~)*=u/ // output.writeLong(nPos); `YBkF output.writeLong(fileSplitterFetch.nStartPos); #uCB)n&. output.writeLong(fileSplitterFetch.nEndPos); ecJ6 } vdDludEv output.close(); * *H&+T/B } fnKY1y]2+ catch(IOException e){e.printStackTrace ();} Z"-L[2E/{! catch(Exception e){e.printStackTrace ();} ~X(UcZ2 } t(!r8!c
u} 1j-te-}"c Bf`9V713 //读取保存的下载信息(文件指针位置) VZn=rw private void read_nPos() I751 t { I`(l *U try{ qml2XJ> DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); T'-FV int nCount = input.readInt(); +k<w!B*
nStartPos = new long[nCount]; P,S
G.EFK nEndPos = new long[nCount]; EpJ4`{4 for(int i=0;i<nStartPos.length;i++) /Dtd#OAdr { zLw{ {| nStartPos = input.readLong(); :wqC8&V nEndPos = input.readLong(); r,P1^ uHx } b^c9po input.close(); _?voU } '|>9C^E9X catch(IOException e){e.printStackTrace ();} [k$*4u> catch(Exception e){e.printStackTrace ();} 9i5,2~ } 3Ug ?jQ](i& 2L_6x<u' private void processErrorCode(int nErrorCode) lS^(&<{ { |WryBzZ>on System.err.println("Error Code : " + nErrorCode); /Ss7"*JLe } RR;AJ8wd w9RS)l2FQ s^OO^%b //停止文件下载 |H}m 4-+* public void siteStop() sd#|3 { }V;+l8 bStop = true; 4F3x@H' for(int i=0;i<nStartPos.length;i++) wu9=N
^x fileSplitterFetch.splitterStop(); I:V0Xxz5t dBV7Te4L \qvaE+ } )QagS.L{z } Si9Z>MR //负责部分文件的抓取 6C4'BCYW( **FileSplitterFetch.java hd V1nS$ */ NC qo@vE package NetFox; oY~ Dg w6dFb6~R |]Z:&[D]i import java.io.*; /"H`.LD.? import java.net.*; R1:k23{ Xb
!MaNm) wv
QMnE8\ public class FileSplitterFetch extends Thread { o'~5pS(wq U'UQ|%5f S_T^G` [ String sURL; //File URL o`zr> long nStartPos; //File Snippet Start Position O|A_PyW long nEndPos; //File Snippet End Position ?; YC'bF int nThreadID; //Thread's ID AB Xl boolean bDownOver = false; //Downing is over y|&}.~U[ boolean bStop = false; //Stop identical *rZ^^`4R FileAccessI fileAccessI = null; //File Access interface iGDLZE+? }ZSQ>8a MC((M,3L public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException R8L_J6Kpa { !{n<K:x1 this.sURL = sURL; .O*bILU this.nStartPos = nStart; j#~Jxv%n this.nEndPos = nEnd; N!Qg; ( nThreadID = id; &AuF]VT fileAccessI = new FileAccessI(sName,nStartPos);//定位 ~m1P_`T } 5F t5@UF~ 5G0$ OX%MP!#KU public void run() rV({4cIe9R { UY2X while(nStartPos < nEndPos && !bStop) Z34Wbun4 { @ DZD 2Nxm@B` { MRr</o try{ S.B<pjgt URL url = new URL(sURL); M@P1, Y HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); vQF
vtwd httpConnection.setRequestProperty("User-Agent","NetFox"); zL5d0_E9 String sProperty = "bytes="+nStartPos+"-"; &bgvy'p httpConnection.setRequestProperty("RANGE",sProperty); v{i7h|e Utility.log(sProperty); 5!C_X5M 7@.cOB`y@3 }7{t^>;D InputStream input = httpConnection.getInputStream(); H4OhIxK //logResponseHead(httpConnection); SxyONp.$\ T{]~07N? Xd:7"/:r byte[] b = new byte[1024]; iDl;!b&V. int nRead; = 5D nR while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) E6Rz@"^XV { <J(sR nStartPos += fileAccessI.write(b,0,nRead); 'B83m#HR# //if(nThreadID == 1) 3:"]Rn([P // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #tt?!\8C } TGuiNobD VhT=
l q0% Utility.log("Thread " + nThreadID + " is over!"); >$gG/WD?KR bDownOver = true; J" j.'. //nPos = fileAccessI.write (b,0,nRead); pqvOJ#?Q}= } :ztr) catch(Exception e){e.printStackTrace ();} B)$c|dUV } . .QB~ } 0s#vwK13 @=w<B4L g#NZ ,~ //打印回应的头信息 0Q"u#V Sp public void logResponseHead(HttpURLConnection con) U,/6;} { :J}t&t for(int i=1;;i++) \&V0vN1 { -]Cc String header=con.getHeaderFieldKey(i); Xf=XBoN| if(header!=null) h9$ Fx //responseHeaders.put(header,httpConnection.getHeaderField(header)); 0Q1FL MLV Utility.log(header+" : "+con.getHeaderField(header)); s"=6{EVqk3 else k<w(i
k1bi break; f0+2t.tj } z^o 1GY } Gy1xG.yM~ I~PDaZP D/(L public void splitterStop() "%WgT2)m. { w&Dv8Wv+Oq bStop = true; @J[6,$UVu } R7oj# F0~k1TDw 3[p_!eoW } P7r'ffA Vi!Q 3zuF{Q2P< /* ,F+B Wot4 **FileAccess.java h*0S$p<[1 *//文件访问(定位,写) |6biq8|$3V package NetFox; >1L=,M import java.io.*; k1z$e*u&r y#ON|c
/ RKd public class FileAccessI implements Serializable{ fbrp#G71y TGT$ >/w > //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 maMHZ\Q RandomAccessFile oSavedFile; z^*
'@ long nPos; qOCJT Og7 ,7]k fB @54*.q$ public FileAccessI() throws IOException rt]S\
{ 78#!Q.## this("",0); ~ <0Z>qr } 6,Hqb<( Rz%e>) 9V1cdb~?"T public FileAccessI(String sName,long nPos) throws IOException ,cTgR78' { Ar9nBJ` oSavedFile = new RandomAccessFile(sName,"rw"); uE_c4Hp this.nPos = nPos; `T*U]/zQ oSavedFile.seek(nPos); 4C_c\;d } =Cf] &!.HuRiuC <T,A&`/ public synchronized int write(byte[] b,int nStart,int nLen) suJ_nb { 6y+b5-{' int n = -1; `hh9"Ws% try{ $FM'
3%B[ oSavedFile.write(b,nStart,nLen); e&Y0}oY n = nLen; BW[5o3
i } OTvROJP catch(IOException e) 6o3T;h { JXQPT e.printStackTrace (); #~Q=h`9 } sPYX~G&T g9tu%cIkR +`en{$%% return n; ^i%A7pg } oVkq2 Iq'O 9G+f/k,P } S0w> hr K!{5[G Rc$h{0K8 /* e=f .y< **SiteInfoBean.java i s"vekC */ ma8wmQ9 JR package NetFox; :xeLt; M=!i>(yG y%(X+E"n* public class SiteInfoBean { n[k1np$7?6 <+E%E4 "e62/Ejg% private String sSiteURL; //Site's URL ;b~~s.+ private String sFilePath; //Saved File's Path +cg
{[f,J; private String sFileName; //Saved File's Name b](o]O{v private int nSplitter; //Count of Splited Downloading File U{1z;lJ $C_M&O} =&U`9qN public SiteInfoBean() hw,^G5m {//nSplitter的缺省值为5 SE `l(-tL //default value of nSplitter is 5 YB!!/ SX4 this("","","",5); 2_pz3<,\ } =Sxol>?t 'F_}xMU 1kFjas`g public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) RsSXhPk? { 'V!kL,
9ES sSiteURL= sURL; it}-^3AM sFilePath = sPath; &4kM8Qh sFileName = sName; X%4h(7;v this.nSplitter = nSpiltter; kL7^$ Fj=NiZ= 4;<DJ.XlN= } Yo2Trh Q=+8/b -<oZ)OfU public String getSSiteURL() DP>mNE { c4|so= return sSiteURL; &BgU:R, } 4
X`^{~ -CU,z|g+ oh&Y<d0 public void setSSiteURL(String value) ,L%p { (!n-Age sSiteURL = value; `Cj,HI_/* } wItz cY1m ay[+2" >eo8 public String getSFilePath() C4_t_N { "k>bUe|RG return sFilePath; iEhDaC[e(b } 2u&c
&G )6G+ tU' E& ]_U$ public void setSFilePath(String value) Q-Y@)Mf~?0 { [+DNM
2A sFilePath = value; Mcb<[~m } '%Dg{ zL @7|)RSBQz +~:0Dxv W public String getSFileName() EG1x { g.&\6^)8p return sFileName; ddMM74 } o}R|tOe fiqj;GW $y4M#yv public void setSFileName(String value) =0Y'f](2eW { 0C7" 3l sFileName = value; m2MPWy5s } g[<uwknf V,'FlU cFxSDTR public int getNSplitter() e)og4 { @f'AWeJ2 return nSplitter; Q,TaJ] } {8i}Ow Xa\]ua_ a!{hC)d* public void setNSplitter(int nCount) A'(k
Yc { h@/>?Va nSplitter = nCount; ^)'||Ly } n]Ebwznt- } n%Rjt!9 1 pYsjo~ ~M(pCSJ[ /* $o::PDQ? **Utility.java N}1-2 */ j[BgP\&, package NetFox; l9,w>]s r6/<&1[ aGe \.A= public class Utility { 0c{Gr 0[> ]dQZ8yVK SwQOFE/Dv~ public Utility() ;vZ*,q6 { yA457'R1 I[vME" `jt(DKB+J } + >Fv*lux l
%]<- //线程睡眠 _qdWQFuM public static void sleep(int nSecond) r{c5dQ
{ zbdOCfA; try{ (u$!\fE-et Thread.sleep(nSecond); ggzAU6J } Gf!t< =T catch(Exception e) 4{uJ||! { +lW+H12 e.printStackTrace (); \Gv- sA } qsQ]M^@> } _q2`m *
N2#{eF&] //日志 QLxXp public static void log(String sMsg) 8Fyc#Xo8 { noWRYS % System.err.println(sMsg); m3 x!*9h } 0fEZD$ <5C=i:6% w/)e2CH public static void log(int sMsg) f4qS OVv
{ lU>)n System.err.println(sMsg); .CB"@.7 } ixoMccU0 } d{(s- $u(M 4(} F=P+;%. /* 0$Qn#K **TestMethod.java ([z<TS#Md */ c9>8IW package NetFox; m&;zLBA; 2\kC_o97 6ba2^3GH public class TestMethod { OoA5!HEh "1=.5:yG wt3Z?Pb public TestMethod() \ZmFH8=|f { ///xx/weblogic60b2_win.exe NG4eEnic!a try{ mUe@Dud SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ZKiL-^dob //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5);
QmDhZ04f SiteFileFetch fileFetch = new SiteFileFetch(bean); `:B fileFetch.start(); ]y$V/Ij=qK }
B[2h catch(Exception e){e.printStackTrace ();} Oa3=+_C~$1
.jrR4@ e2_r0I^C } UlLM<33_) >V ]*mS%K LmT[N@>" public static void main(String[] args) Z1qATXXf { A(_^_p.| new TestMethod(); vb80J<4 } ^`B##9g~ }
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