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/* !-3;Qj}V **SiteFileFetch.java e:'56?| */ .RFH@'' package NetFox; H2#o
X import java.io.*; vGh>1U: import java.net.*; lA/-fUA 6z6\xkr V|sV U public class SiteFileFetch extends Thread { s9nPxC&A zixG}' v)_FiY QQ6 SiteInfoBean siteInfoBean = null; //文件信息Bean @d 7V@F0d long[] nStartPos; //开始位置 u?dPCgs;h long[] nEndPos; //结束位置 0\ (:y^X FileSplitterFetch[] fileSplitterFetch; //子线程对象 3Z*o5@RI long nFileLength; //文件长度 @/^mFqr2 boolean bFirst = true; //是否第一次取文件 { ,c*OR boolean bStop = false; //停止标志 a4 N f\7 File tmpFile; //文件下载的临时信息 *DfOm`m DataOutputStream output; //输出到文件的输出流 `m<O!I"A
C&vi7Yx //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ,z/aT6M?H public SiteFileFetch(SiteInfoBean bean) throws IOException y<Xu65 { v]F4o1ckk siteInfoBean = bean; bl^Ihza //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); $>O~7Nfst7 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); |%XTy7^a if(tmpFile.exists ()) 2 Kjd!~Z$ { Q35\wQ# bFirst = false; ]T]{VB read_nPos(); Sm4BZF~!B } n^ fUKi*; else 8/dMvAB1So { =tt3nfZ9 nStartPos = new long[bean.getNSplitter()]; 4^2>KC_ nEndPos = new long[bean.getNSplitter()]; 4FRi=d;mP } !.mR]El{K J$1H3#VVG |> ]@w\] N2A6C$s } /ugyUpyg 0,ryy,2 <Jhd%O public void run() Ri" hU/H{ { Uz! 3){E //获得文件长度 JJ?rVq1g //分割文件 J}xM+l7uY //实例FileSplitterFetch 9_:"`)]3B //启动FileSplitterFetch线程 1a{3k#} //等待子线程返回 z6E =%-` try{ l|gi2~ %Y if(bFirst) EA6l11{Gk1 { Y#68_%[ nFileLength = getFileSize(); ")uKDq if(nFileLength == -1) %w65)BFQ { {j>a_]dTVX System.err.println("File Length is not known!"); !mUJ["# } <5z!0m-G else if(nFileLength == -2) m#RJRuZ|2V { +X^GS^mz System.err.println("File is not access!"); 63u%=-T%a
} P5_Ajb(@' else uM[|>t { vNs%e/~vj for(int i=0;i<nStartPos.length;i++) Zc~7R`v7} { mk1R~4v nStartPos = (long)(i*(nFileLength/nStartPos.length)); d0I s|Gs } K)LoZ^x0) for(int i=0;i<nEndPos.length-1;i++) '1b 1N5~ { ch0^g8@Q[ nEndPos = nStartPos[i+1]; )9yQ
C } =figat nEndPos[nEndPos.length-1] = nFileLength; iLSUz j` } /OztkThx= } 3O$l;|SX MZh.Xo d5gwc5X //启动子线程 ,ZJ}X 9$< fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; iptA#<Yj for(int i=0;i<nStartPos.length;i++) n&;JW6VQS { X^eyrqv fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ~q566k!Ll! siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), !FP ] nStartPos,nEndPos,i); }}TPu8Rl Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); %;QK5L fileSplitterFetch.start(); Z .gb' } yg}O9!M J // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), j? BL8E' siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); ^aAs=KditO // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", $EFS_*<X nEndPos = " + nFileLength); 5\quh2Q_ // fileSplitterFetch[nPos.length-1].start(); HU?1>}4L uZn_*_J! S,:!H@~B //等待子线程结束 EX{%CPp7} //int count = 0; /P,1KVQPh //是否结束while循环 ]j7`3%4uK boolean breakWhile = false; p+=zl`\=| F(`|-E"E; i_*yS+Z; while(!bStop) fU$Jh/#": { -M=BD-_.h write_nPos(); @~hy'6/ Utility.sleep(500); $jh$nMx)! breakWhile = true; 85&7WAco"B tP|/Q5s $5 G(_ for(int i=0;i<nStartPos.length;i++) "7%jv[ { O"~[njwkE if(!fileSplitterFetch.bDownOver) s&nat4{B { L3I$ K+c breakWhile = false; ||X3g"2W9 break; OlyW/hd } HQ"T>xb } 0a:oC(Ak
if(breakWhile) B;[ .u>f break; n! 5(Z5= n[DRX5OxR' afX|R //count++; eowwN>-2C //if(count>4) Ich^*z(F$ // siteStop(); iqB5h|
` } ~vDa2D<9% *D%w r'!> 9cB+x`+Lu System.err.println("文件下载结束!"); 0^>,
} !%65YTxY- catch(Exception e){e.printStackTrace ();} npzp/mcIe) } k^ZP~.G (mP{A(kwJ ep"{{S5g //获得文件长度 rVP\F{Q4Tr public long getFileSize() '8)kFR^9 { AcuZ?LYzK int nFileLength = -1; F&!vtlV) try{ 4#>Z.sf URL url = new URL(siteInfoBean.getSSiteURL()); [(Z(8{3i HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); f$:Y'$Z1 httpConnection.setRequestProperty("User-Agent","NetFox"); Zfk]Z9YO G8vDy1`q6 I\_2=mL int responseCode=httpConnection.getResponseCode(); /v9qrZ$$ if(responseCode>=400) RdD>&D$I { bj@sci(1? processErrorCode(responseCode); RN 4?]8 return -2; //-2 represent access is error f@YdL6&d- } U)f('zD nxhlTf>3 z<9C- String sHeader; !dwZ` D s i2@k kP$E+L for(int i=1;;i++) $=diG { pnSKIn //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); KE"6I //Utility.log(in.readLine()); :z P:4NW sHeader=httpConnection.getHeaderFieldKey(i); c6 &k?Puy if(sHeader!=null) nZnqXclzxn { KwHN c\\ if(sHeader.equals("Content-Length")) (U#,; { pW.WJ`Rk nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); >?K=l]!(* break; mvH8hvD9 } uQc("F } glCpA$;VPu else ?7wcv$K5 break; !HU$V9C } '8zd]U } er24}G8 catch(IOException e){e.printStackTrace ();} oS$7k3s
fj catch(Exception e){e.printStackTrace ();} *#>(P 'z,kxra|n MzUKp" Utility.log(nFileLength); ^@8XJ[C,_ bP-(N14x+ ;UgwV/d return nFileLength; V0{#q/q } Q e+;BE-H 7/a7p(
8D`+3 //保存下载信息(文件指针位置) ,w6?Ap private void write_nPos() i/-IjgM"- { :'%|LBc0 try{ j;uUM6 output = new DataOutputStream(new FileOutputStream(tmpFile)); {sB-"NR`K output.writeInt(nStartPos.length); nI?*[y} for(int i=0;i<nStartPos.length;i++) ][l5S*CC_ { \y?*} L // output.writeLong(nPos); Xh}q/H< output.writeLong(fileSplitterFetch.nStartPos); *JX$5bZsI output.writeLong(fileSplitterFetch.nEndPos); SujEF`" } SaGI4O_\s output.close(); pD[&,gV$ } @bTm.3 catch(IOException e){e.printStackTrace ();} [sG`D-\P[ catch(Exception e){e.printStackTrace ();} {J1rjrPo } KB~1]cYMp <-N eusx% [dLc+h1{B //读取保存的下载信息(文件指针位置) yn ofDGAf private void read_nPos() 6{i0i9Tb { MHWc~@R try{ yxx_%9 X DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); >CKa?N; int nCount = input.readInt(); !lzj.|7=1 nStartPos = new long[nCount]; %P1zb7:8 nEndPos = new long[nCount]; {BM:c$3@j for(int i=0;i<nStartPos.length;i++) :|k!hG { b/\O;o}] nStartPos = input.readLong(); 4J,6cOuW4 nEndPos = input.readLong(); ?z M }
VJK4C8] input.close(); jo"+_)] } *{5}m(5F catch(IOException e){e.printStackTrace ();} 7ojh=imY catch(Exception e){e.printStackTrace ();} RgFpc*.T } o"RE4s\G~r anz7ae&P'K 4`v[p4k private void processErrorCode(int nErrorCode) Ap\]v2G { b *|?7 System.err.println("Error Code : " + nErrorCode); Vt zSM%= } moVf(7 lbIW1z%:sy GPAC0K^p //停止文件下载 YVRE9 public void siteStop() FLPN#1 { oIE(`l0l bStop = true; .-s!} P" for(int i=0;i<nStartPos.length;i++) aAoAjV NkK fileSplitterFetch.splitterStop(); |'i ?o Zq1> M'V; UlN}SddI9 } b,HXD~= } 7 je1vNs //负责部分文件的抓取 @AG=Eq9<o **FileSplitterFetch.java D//58z& */ xop\W4s_ package NetFox; )}w-;HX 3 5-FD{ Jz;`L3m import java.io.*; %iV\nFal> import java.net.*; ~U?vB((j! E.VEW;= NFIFCy! public class FileSplitterFetch extends Thread { Z-U3TrSI
@J@bD+Q+0 I GcR5/3 String sURL; //File URL YRl4?}r2 long nStartPos; //File Snippet Start Position P#A|Pn<p long nEndPos; //File Snippet End Position NVC$8imip int nThreadID; //Thread's ID Yic'p0<
?V boolean bDownOver = false; //Downing is over CA"`7<, boolean bStop = false; //Stop identical 0XIrEwm@% FileAccessI fileAccessI = null; //File Access interface y7*^H DUm/0q& Ke&fTK public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException >W8PLo+i { 6d 8n1_ this.sURL = sURL; !q PUQ+ this.nStartPos = nStart; v#IZSBvuQK this.nEndPos = nEnd; YX2j;Y? nThreadID = id; VxAR,a1+n fileAccessI = new FileAccessI(sName,nStartPos);//定位 z#&qWO } uoBPi[nK h"nv[0!) pm;g)p? public void run() :(x 90;DW { X_|} b[b while(nStartPos < nEndPos && !bStop) ]zK} X! { lu.2ZQE PsD]gN5" C[$<7Mi|; try{ &jPsdv h URL url = new URL(sURL); %nc+VL4 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~yf 5$~Z httpConnection.setRequestProperty("User-Agent","NetFox"); 7~`6~qg. String sProperty = "bytes="+nStartPos+"-"; `Op
";E88 httpConnection.setRequestProperty("RANGE",sProperty); ')FNudsC Utility.log(sProperty); @49^WY E3KPJ`=!*" bmddh2 InputStream input = httpConnection.getInputStream(); aH$*Ue@Q //logResponseHead(httpConnection); RMrt4:-DI D{z=)'/F \S2'3SDd/ byte[] b = new byte[1024]; cRfX int nRead; h/w- &7t while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) uc"u@ _M { KJkcmF}Q nStartPos += fileAccessI.write(b,0,nRead); 3i$AR //if(nThreadID == 1) ta4<d)nB // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); YvHn~gNPhs } kI;^V ?x/L"h&Kp ^e 6(#SqR Utility.log("Thread " + nThreadID + " is over!"); E|Lh$9XONA bDownOver = true; 5Np. & //nPos = fileAccessI.write (b,0,nRead); LtvyWc` } [E /3&3 catch(Exception e){e.printStackTrace ();} wb9zJAsc } gR>#LM&dG } tE>:kx0*3 ~gDtj&F tr} $82Po //打印回应的头信息 #sHP\|rA public void logResponseHead(HttpURLConnection con) ^b.J z} { 3G&1. 8 for(int i=1;;i++) /kq~*s { x[kdQj2[& String header=con.getHeaderFieldKey(i); Zn!SHj if(header!=null) cK } Qu //responseHeaders.put(header,httpConnection.getHeaderField(header)); {gn[
&\ Utility.log(header+" : "+con.getHeaderField(header)); P$QfcJq&c* else 33C#iR1(WJ break; &pAT } 8|/YxF< } J{ Vl2P?@ 32Z4&~I (TQXG^n$gY public void splitterStop() YD%Kd&es { RPWYm bStop = true; \3/9lE|gh } v]!7=>/2 IR&u55#I6 *%e#)sn* } rG]Xgq" ~eP2PG l]Sui_+ZU /* ^pP
14y*go **FileAccess.java 2S4z$(x3 *//文件访问(定位,写) fYi!Z/Ck2 package NetFox; VGq]id{*$ import java.io.*; )Fw)&5B! #wyS?FP- '9gI=/29D public class FileAccessI implements Serializable{ >A/=eW/q Fqv5WoYVf //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 BTyVfq
sx RandomAccessFile oSavedFile; jo*9QO long nPos; DPOPRi~ :Mk}Suf&H u/f&Wq/ public FileAccessI() throws IOException /WfxI>v { :6+~"7T this("",0); c"ztrKQQ } %U7B0- Mm!saKT% 0Pk-FSY|f public FileAccessI(String sName,long nPos) throws IOException %-Z~f~<? { cw.7YiU oSavedFile = new RandomAccessFile(sName,"rw"); cIp h$@ this.nPos = nPos; F e.*O` oSavedFile.seek(nPos); A2d2V**Z } v3Yj2LSqx 3D0I5LF& &?6w2[} public synchronized int write(byte[] b,int nStart,int nLen) vNbA/sM { cG:`Zj~4 int n = -1; HV.7IyBA^ try{ \irjIXtV oSavedFile.write(b,nStart,nLen); dk/*%a
+ n = nLen; o=QF>\\ } G65N: catch(IOException e) ZZ*k3Ce { w ZAXfNA e.printStackTrace (); :\_MA^< } ~*Qpv&y) (q N(#~ Rn_c9p
return n; ?y)X $D^ } KCE-6T V?BVk8D}; V bOLTc } &NeYKh? j:3Hm0W3 ^6>|! /* ycD.:w p\' **SiteInfoBean.java -<]_:Kf{;& */ w lg#c6#q package NetFox; ?
M_SNv mtddLd, /ASI0h public class SiteInfoBean { lG>e6[Wc ]_8I_VcQ `|Z@UPHzG private String sSiteURL; //Site's URL %W;Gf9.w private String sFilePath; //Saved File's Path \|`Pul$ private String sFileName; //Saved File's Name Tk&9Klo private int nSplitter; //Count of Splited Downloading File ya g C)p<M H< h##?~!xDmq public SiteInfoBean() BrMp_M {//nSplitter的缺省值为5 _)2TLA
n3 //default value of nSplitter is 5 3MJWC o-[ this("","","",5); |o=ST
} <|Eby!KXR eAKQR 14!a)Ijl public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) f?zK" { DeQ'U!?+N sSiteURL= sURL; .t[ZXrd|0 sFilePath = sPath; KVpAV$|e sFileName = sName;
0lr4d Y this.nSplitter = nSpiltter; K |} ]< qZ_fQ@ ?mfWm{QTt } 7C7(bg,7^ ^^3va)1{! !_H8Q}a public String getSSiteURL() tSc>@Q_| { A6 y~_dt return sSiteURL; exEld } G|oB'~{& qs1.@l(" hIo S#] public void setSSiteURL(String value) ~K$"PKs3 { 7a]Zws sSiteURL = value; ) wo2GF } $]U5 uQtk|)T E
)P9{47 public String getSFilePath() Dw/Gha/ { s]<r return sFilePath; lJ] \ } ?"<r9S|[O -1r &s ""v`0OP&J public void setSFilePath(String value) H0b6ZA%n { vV\F^ sFilePath = value; R{xyme@"^ } $ X=D9h LXu"rfp <AAZ8#^ public String getSFileName() kl3S~gE4@ { IL[|CB1v return sFileName; _QMHPRELk } 90h1e7ZcC &kjwIg{ |RAQ% VXm public void setSFileName(String value) Wt)SdF=U/ { ,[}yf#8@J sFileName = value; bu"68A;> } t3#H@0< T^%n!t m!#)JFe67 public int getNSplitter() {Sr=SE { KIAe36.~ return nSplitter; +/!=Ub[:U } ? __aVQ7 [#>$k
6F* N{hF [F public void setNSplitter(int nCount) IzGB { <jRFN&"h} nSplitter = nCount; Zu0;/_rN } #[U9(44, } lA.;ZD! -wfRR>)d %7(kP}y* /*
InPy:} **Utility.java VTJIaqw */ aZawBU.: package NetFox; NO+
55n 8R)D ! 7[l sR>`QIi(a public class Utility { 0Y6q$h>4 (
*9Ip Q9yGQu public Utility() hSkc9jBF { I NPYJ#% Pn+IJ=0Y V{T{0b"\U } CCW%G,$U9 UKKSc>D1 //线程睡眠 YH'$_,8peM public static void sleep(int nSecond) ?y>Y$-v/C { up3?$hUc. try{ l- 1]w$
y Thread.sleep(nSecond); {ywXz|TP } M q^|M~ catch(Exception e) ^zaKO'KcV { 2<[eD`u e.printStackTrace (); XdGpW } QM[A;WBr7 } m feMmKFu\ CYPazOfj //日志 " K 8&{= public static void log(String sMsg) KMK&[E#r { 4?>18%7& System.err.println(sMsg); k'[ S@+5 } 49+ >f ;m@1Ec@*p J+)'-OFt0 public static void log(int sMsg) kgbobolA { &jV9* System.err.println(sMsg); ex`
xkZ+ } 0W T#6D } :vc[/< vix&E`0yD dSOlD/c
/* 3[0w+{(Q **TestMethod.java ;YK!EMM4!h */ xab]q$n]k package NetFox; NXzU0
2[Z0I4r cS<TmS! public class TestMethod { I86e&"40 t6'61*)|0 ?mH@`c,fM public TestMethod() jW-;4e*H=V { ///xx/weblogic60b2_win.exe cQ8dc+ { try{ p=!#],[ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); #*!+b //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); `IEq@Wr#$! SiteFileFetch fileFetch = new SiteFileFetch(bean); kWB, ;7 fileFetch.start(); \\=.6cg<K } `1nRcY catch(Exception e){e.printStackTrace ();} f>.4-a? Tr}R`6d$ ZlthYuJ } B|cA[ wA?@v|,dZ X?tj$ public static void main(String[] args) \r)%R5_CQ { tf4*R_6;1$ new TestMethod(); Y4QLs^IdB } 2
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