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/* q{Ao
j **SiteFileFetch.java DrK@y8 */ e1Q
package NetFox; %-fQ[@5 import java.io.*; L.2!Q3& import java.net.*; ^|%u%UR r(j :C%?}C 'C7$,H' public class SiteFileFetch extends Thread { 70-nAv hh!4DHv u+
b `aB SiteInfoBean siteInfoBean = null; //文件信息Bean Z\r?>2 long[] nStartPos; //开始位置 O\F$~YQ long[] nEndPos; //结束位置 i"#pk"@` FileSplitterFetch[] fileSplitterFetch; //子线程对象 Yz)+UF, long nFileLength; //文件长度 4OeH}@ a boolean bFirst = true; //是否第一次取文件 " %
l`` boolean bStop = false; //停止标志 [>D5(O File tmpFile; //文件下载的临时信息 |"g+p)A DataOutputStream output; //输出到文件的输出流 IN_O!c0e Z H2 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) a(IUAh*mO public SiteFileFetch(SiteInfoBean bean) throws IOException XM f>B| { LEuDDJ- siteInfoBean = bean; TXT!Ae //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); dWTc3@xd tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); xc}kDpF=g if(tmpFile.exists ()) >N~orSw% { s~06%QEG bFirst = false; `{%ImXQF read_nPos(); j-#h^3l1? } BD-
c<K" else b$q~(Z} { V3Ep&<=/ nStartPos = new long[bean.getNSplitter()]; /Z~5bb( nEndPos = new long[bean.getNSplitter()]; 4&AGVplgF } >-,$ 9zl-C*9vj MbxJ3"@ Q[Gs%/> } (QTQxZ "[ieOFI M1=eS@ public void run() W2{4s
1 { .On3ZN //获得文件长度 vddl9"V) //分割文件 C<#_1@^:8e //实例FileSplitterFetch h t3P@; //启动FileSplitterFetch线程 +w?-#M# //等待子线程返回 !t[;~`d9 try{ %$_Y"82 if(bFirst) O{p7I& { MxOIe|=& nFileLength = getFileSize(); &z05h<] if(nFileLength == -1) N :OLN[ { 2?F?C System.err.println("File Length is not known!"); Z.`0 } 4-BrE&2f else if(nFileLength == -2) rgo!t028^ { j-d542" System.err.println("File is not access!"); P~84#5R1 } z))rk vL% else >}B53.;.k { c*r@QmB: for(int i=0;i<nStartPos.length;i++) 7+Er}y> { F. I\?b nStartPos = (long)(i*(nFileLength/nStartPos.length)); WDI3* } FqZD'Uu7 for(int i=0;i<nEndPos.length-1;i++) 0ybMI+* { BoXPX2: nEndPos = nStartPos[i+1]; Ej $.x6: } U8{^-#(Uz nEndPos[nEndPos.length-1] = nFileLength; Wcbm,O4u } drvz
[
9; } )-m/(- ,#bT j$<g8Bg=o //启动子线程 85q!FpuH fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; '|}H,I{ for(int i=0;i<nStartPos.length;i++) 5&.I9}[)j { dt0(04 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), l,5isq
;m siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), E5?$=cL? nStartPos,nEndPos,i); dXPTW;w Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); e5D\m g) fileSplitterFetch.start(); Wngc(+6O& } eM]>" // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), cfPp>EK siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); k(xB%>ns // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %XQJ!sC` nEndPos = " + nFileLength); {8 &=t8,c // fileSplitterFetch[nPos.length-1].start(); vXZ
) (G~M E> /i
//等待子线程结束 \~r_S //int count = 0; ps^["3e //是否结束while循环 *uSlp_;kB boolean breakWhile = false; ZENblh8fs OnyAM{$g T+PERz( while(!bStop) `4e| I.`^r { Y5y7ONcn write_nPos(); ix38|G9U Utility.sleep(500); qeC^e}h breakWhile = true; oN)I3wO$ EN__C$ G5lBCm for(int i=0;i<nStartPos.length;i++) fm$Qd^E|e { !^EA}N.u if(!fileSplitterFetch.bDownOver) Ffd4c { w]fVELU breakWhile = false; % .wx]:o break; B 74 } MShcZtN } %q.5;L if(breakWhile) |[p]])
o break; B`w8d[cL7 _Ea1;dJmq IpM"k)HR //count++; gB>AYL%o= //if(count>4) iVo-z# // siteStop(); lk`|u$KPz } 8bf@<VTO_ E&Zt<pRf;2 fl40jo] System.err.println("文件下载结束!"); dA<SVk*0Q } .J=QWfqt catch(Exception e){e.printStackTrace ();} <tm= } +jS<n13T DHbS=Iih n<F3&2w //获得文件长度 ItVVI"- public long getFileSize() E>:#{% { 'e6J&X int nFileLength = -1; =BbXSwv'( try{ 8Pva ]Q URL url = new URL(siteInfoBean.getSSiteURL()); O]?\<&y HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 5k?xBk=< httpConnection.setRequestProperty("User-Agent","NetFox"); 8Q0/kG VCT1GsnE +U>Y.YP int responseCode=httpConnection.getResponseCode(); \w&R`;b8w if(responseCode>=400) Iu(]i?Y { @LY[kt6o processErrorCode(responseCode); lv~ga2>z return -2; //-2 represent access is error tv2k&\1 }
C+_UIx]A ?0-3J )kW )TBm?VMe String sHeader; y3bL\d1 +Y2D @K?) \?|^w. for(int i=1;;i++) 0g
Hd{H= { Zqv //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); yTNHM_P //Utility.log(in.readLine()); B,` `2\B sHeader=httpConnection.getHeaderFieldKey(i); N7GZ'-t^Er if(sHeader!=null) HdTB[( { 3Vk\iJ if(sHeader.equals("Content-Length")) -~*kAh { !Q,Dzv"7 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); A<(Fn_&W break; /(9.Fqe( } "*S_w N% } &x4*YMh else fo<nk|i break; TkIiO> } E 0OHl } jw/@]f;N catch(IOException e){e.printStackTrace ();} =>&~p\Aw catch(Exception e){e.printStackTrace ();} QyrB"_dm *|cs_,3 o#D'"Tn! Utility.log(nFileLength); l\2"u M#7 +i}uRO IR&b2FTcU return nFileLength; 6BZi4:PDx } L+mHeS l #KuBEHr :bCswgd[ //保存下载信息(文件指针位置) T hVq5 private void write_nPos() &V%faa1 { z uo:yaO try{ B`vC> output = new DataOutputStream(new FileOutputStream(tmpFile)); 1_8@yO output.writeInt(nStartPos.length); AmUH]+5KT for(int i=0;i<nStartPos.length;i++) MM&qLAa"f { M+)ENve // output.writeLong(nPos); K_;?Sr= output.writeLong(fileSplitterFetch.nStartPos); [<}W S}
. output.writeLong(fileSplitterFetch.nEndPos); zFY$^Oz"_ } hVCxwTg^X output.close(); Yf1%7+V35 } =tX"aCW~ catch(IOException e){e.printStackTrace ();} QVmJ_WT catch(Exception e){e.printStackTrace ();} 'oM=ZU8wo } ,,g: x m!(dk] 67||wh.BU //读取保存的下载信息(文件指针位置) umpa!q}; private void read_nPos() ]w]:9w { YllW2g: try{ 1M?Sl?+j DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); gQeoCBCE int nCount = input.readInt(); #UvWS nStartPos = new long[nCount]; j*~z.Q | nEndPos = new long[nCount]; 2ppJ;P{k for(int i=0;i<nStartPos.length;i++) 4F!%mMq { <2LUq@Pg nStartPos = input.readLong(); >
lI2r} nEndPos = input.readLong(); yb\!4ml } ^a| input.close(); 0&3zBL%Bo } -AQ
7Bd catch(IOException e){e.printStackTrace ();} M(ie1Ju catch(Exception e){e.printStackTrace ();} d7Z$/ $ } I]Z"?T 2Y;iqR M{=p0?X private void processErrorCode(int nErrorCode) &$h#9 { {>Qs+] System.err.println("Error Code : " + nErrorCode); COxJ,v( } vCtnjWGX}/ \.F|c ;Wn0-`_1, //停止文件下载 q 1A0-W#4 public void siteStop() bOr6"nn { hy3?. bStop = true; I@1VX5 for(int i=0;i<nStartPos.length;i++) yJ(ITJE_Z fileSplitterFetch.splitterStop(); H.O&seY y#nyH0U Nig)!4CG } 7!e kINQ } /g!X[rn7Q //负责部分文件的抓取 !1<>][F **FileSplitterFetch.java JP]-a!5Ru */ c=Zurqj package NetFox; m'2EiYX$}\ )-i (%;,*e #BI6+rfv| import java.io.*; , lBHA+@ import java.net.*; h0l_9uI Slp_o\s$@ (cp$poo public class FileSplitterFetch extends Thread { %.:]4jhk iP?lP= M i}C%`1+( String sURL; //File URL Qs 'dwc long nStartPos; //File Snippet Start Position 9"dZ4{\! long nEndPos; //File Snippet End Position //#]CsFiP int nThreadID; //Thread's ID OV-#8RXJ boolean bDownOver = false; //Downing is over F[X;A\ boolean bStop = false; //Stop identical ALKzR433/ FileAccessI fileAccessI = null; //File Access interface >6'brb f=>iiv V)mi1H|m public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException T
0?9F2 { (V`ddP- this.sURL = sURL; ~b9fk)z! this.nStartPos = nStart; .zJZ*\2ob this.nEndPos = nEnd; WwLV^m] nThreadID = id; &Z+.FTo fileAccessI = new FileAccessI(sName,nStartPos);//定位 9n3. Ar } djDE0-QxcR g7K<"Z {M Jx8DVjy public void run() Z}>+!Z { )2bbG4:N while(nStartPos < nEndPos && !bStop) >UV=k :Q { B\>3[_n 0fa8.g#I$ }G<A$*L1 try{ :(4];Va URL url = new URL(sURL); i6k~j%0m HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o H]FT{ httpConnection.setRequestProperty("User-Agent","NetFox"); sP%J`L@h String sProperty = "bytes="+nStartPos+"-"; eS2VLVxu httpConnection.setRequestProperty("RANGE",sProperty); wOR#sp& Utility.log(sProperty); FNXVd/{M3 ^;cJjl'= Kxsj_^&|i InputStream input = httpConnection.getInputStream(); K$-|7tJon //logResponseHead(httpConnection); 22D,,nC0+= .U,>Qn4/ ?xo<Fv byte[] b = new byte[1024]; ZIaFvm&q7Z int nRead; ?M04 cvm while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop)
:a M@"#F { nY?X@avo> nStartPos += fileAccessI.write(b,0,nRead); n:%A4* //if(nThreadID == 1) m8&XW2S // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); AKAxfnaR } SXmh@a"*\ K(}<L-cv ns&(g^ Utility.log("Thread " + nThreadID + " is over!"); `u7twW*U2 bDownOver = true; t\lx*_lr //nPos = fileAccessI.write (b,0,nRead); 7 '7a`-W } RH;Kbu catch(Exception e){e.printStackTrace ();} !)uXCg9U } D o!]t7Y$ } Q8bn|#` +fq;o8q Y67i\U>? //打印回应的头信息 )h;zH,DA[3 public void logResponseHead(HttpURLConnection con) &0J/V>k { (9!kKMQW' for(int i=1;;i++) x_x|D|@wM { 9q"G g? String header=con.getHeaderFieldKey(i); O9)k)A]`O if(header!=null) *9}~?#b //responseHeaders.put(header,httpConnection.getHeaderField(header)); s9Bd mD^|# Utility.log(header+" : "+con.getHeaderField(header)); _P{v=`]Eu else f{#Mc break; ,CnUQx0 } ^4>Icz^ F } \J^xpR_0u V;]U] 20mZ{_% public void splitterStop() jp-]];:aPJ { Ji:0J},m bStop = true; }/Y)^ } 8?k.4{? Y^uYc} 8j!(*'J. } p9iCrqi "C [uz& ]\:l>< /* PX,fg5s\b **FileAccess.java Re'Ek *//文件访问(定位,写) '>|5 package NetFox; c# WIB 4 import java.io.*; )hK1W\5 4(\7Or('' tqK}KL public class FileAccessI implements Serializable{ 7.xJ:r| R)qK{wq(1E //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 DZ0\pp?S RandomAccessFile oSavedFile; " qrL:, long nPos; %b`B.A 4$b9<:M_ .@]M'S^1 public FileAccessI() throws IOException ^b(>Bg)T { }@wXm this("",0); DR#[\RzNI } gc{5/U9H* DX#F]8bWl %q,^A+= public FileAccessI(String sName,long nPos) throws IOException j~rarR@NB) { >eaK@u-'0 oSavedFile = new RandomAccessFile(sName,"rw"); g].hL this.nPos = nPos; =;A~$[ g oSavedFile.seek(nPos); ~b{j`T } u+uu?.bM auQfWO[ u vW4N[ .+ public synchronized int write(byte[] b,int nStart,int nLen) \Rvsy;7 { Bn{0-5nj int n = -1; ?GKm_b]JC try{ 6u v'{ oSavedFile.write(b,nStart,nLen); yj{:%Km:` n = nLen; 98eS f } MHKB:t]hA catch(IOException e) q CB9z { mPo] .z e.printStackTrace (); _a=f.I } \78kShx T?E[LzZg R|H_F#eVn} return n; \:wLUGFl5 } \ g[A{ 6WnGP>tc. 3$ 1 z } '$n#~/#} >jDx-H.N S=~8nr/V /* %;9+`U **SiteInfoBean.java r#[YBaCZJ */ OHha5n package NetFox; wY j~ (P" 7oI^sh k OT5'c l public class SiteInfoBean { BV
HO_ 2nPU $\du }ZWeb#\ private String sSiteURL; //Site's URL o(@F37r{? private String sFilePath; //Saved File's Path l?%U*~* private String sFileName; //Saved File's Name !Rw\k'<GKX private int nSplitter; //Count of Splited Downloading File
wc'K=;c lCyp&b#(L ~X
-.@k' public SiteInfoBean() ZVek`Cc2 {//nSplitter的缺省值为5 dO[w3\~ //default value of nSplitter is 5 lC i_G3C this("","","",5);
I"=XM
} /aB9pD+% O}3M+ %7?v='s= public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) OAQ'/{~7 { ,FPgbs sSiteURL= sURL; +>5
"fs$Y sFilePath = sPath; VSkx;P sFileName = sName; +<ey
Iw this.nSplitter = nSpiltter; S&P5##.u` 1`_i%R^ wFaWLC|& } N7xkkAS{ JZQ$*K ^OQ#N z public String getSSiteURL() Do|`wpR { W$Bx?}x($ return sSiteURL; P( W8XC } o;JBe"1 I
-obfyije jjm-%W@ public void setSSiteURL(String value) A4?_0:< { &~Q ?k sSiteURL = value; JPk3T.qp } C6eo n4Ut LV 94i !m1pL0 public String getSFilePath() dR_hPBn/@ { w`VmN}pR return sFilePath; y o[!q|z } |[TH
~o sh?Dxodp9 N3H!ptn37 public void setSFilePath(String value) >}/"gx { 0nz
k?iP sFilePath = value; 8L 9;VY^Y } .{-8gAh UgJ^NF2w 4f"a/(>* public String getSFileName() ]IJ.} { b,G+=&6u return sFileName; Bd"7F{H } <S0!$.Kg*< fK^FD&sF ki^[~JS>' public void setSFileName(String value) N2tvP+Z6D { Y^S0K'N sFileName = value; W.n@ } R< xxwjt ^LT9t2 s:cS 9A8 public int getNSplitter() a@,tf'Sr { S-yd-MtQp return nSplitter; YKl!M/
} mXF
pGo5 s <z)MV
oa b)w3
G%Xx public void setNSplitter(int nCount) k=bv!T_o {
VV]{R' nSplitter = nCount; 4'9h^C& } sS(^7GARa } =GM!M@~,Ab HA"dw2| xYt{= /* N M~e **Utility.java
YQX>)' */ D?5W1m]E,s package NetFox; o(~JZik P!YT{} G';oM;~/| public class Utility { (DKpJCx N??<3j+Iu oRWsi/Zf public Utility() :@b>,{*4zS { a9jY^E'|n p7H*Ff` >Q5E0 !] } ^ad>
(W 6o A0a\G' //线程睡眠 s[s 6E`Q public static void sleep(int nSecond) zLXtj- { 7P|(j<JX6' try{ S8,+6+_7 Thread.sleep(nSecond); `O}.
.N]g } <6L$:vT_ catch(Exception e) N{p2@_fnB { <O\z`aA'q e.printStackTrace (); FT(EH } [V jd)% } vlj|[joXw 4?yc/F=kI //日志 ;- ]f4O8 public static void log(String sMsg) ^2^ptQj { q9WSQ$:z8 System.err.println(sMsg); 5K6_#g4" } MB "?^~Sm Va*Uwy?x/) ,$;CII
v public static void log(int sMsg) .=@M>TZM { dqKTF_+VhA System.err.println(sMsg); +Qc^A } p Y>yJ) } Ca1)>1Vz u5CT7_#) o!\O) /* ]B,S <*h **TestMethod.java b0t];Gc%b */ H8-,gV package NetFox; %] #;
~I% Yaa
M-o ;_Rx|~!! public class TestMethod { 1@nR.v"$ p6HZ2Q:a ?pF;{ public TestMethod() \
I?;% { ///xx/weblogic60b2_win.exe x(=kh%\; try{ Le3S;SY& SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); fnmZJJ,Q //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); LiB0]+wzj SiteFileFetch fileFetch = new SiteFileFetch(bean); m1[QD26 fileFetch.start(); T:!sfhrZ~< } ,<vrDHR catch(Exception e){e.printStackTrace ();} "]N QTUb; G0(c@FBK ka>RAr J } KT g$^"\ /p%K[)T( ~hxB Pn." public static void main(String[] args) q]r!5&Z |