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/* t]HY@@0g **SiteFileFetch.java yXU.PSG* */ nQc,^A)I package NetFox; +4 k=Y import java.io.*; 'D21A8*N import java.net.*; x*1wsA z$Jm1l YY;<y%:8Z public class SiteFileFetch extends Thread { N`W[Q>n DP{nvsF ` @ QZK0Ox SiteInfoBean siteInfoBean = null; //文件信息Bean JV~
Dly> long[] nStartPos; //开始位置 )Q1>j 2& long[] nEndPos; //结束位置 #
55>? FileSplitterFetch[] fileSplitterFetch; //子线程对象 i(.e=
long nFileLength; //文件长度 RBQ8+^ boolean bFirst = true; //是否第一次取文件 +(*HDa| boolean bStop = false; //停止标志 A4"TJZBg} File tmpFile; //文件下载的临时信息 NsB]f{7>8+ DataOutputStream output; //输出到文件的输出流 19$A!kH\ FOF@@C~aH //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) }y6|H,t9 public SiteFileFetch(SiteInfoBean bean) throws IOException %Y&48''" { M/ 64`lcb siteInfoBean = bean; j!4{+&Laq //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); kp*v:* tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); I# tlaz# if(tmpFile.exists ()) -DkD*64wu { ;+~5XLk bFirst = false; .`IhxE~mN read_nPos(); h`6 (Oo| } u
IXA{89 else <q7o"NI6FZ { <H^jbK nStartPos = new long[bean.getNSplitter()]; mz0{eO nEndPos = new long[bean.getNSplitter()]; f\
P0% } ,[;O'g?,g `jeATxWv /"e@rnn uZld9u } Q+Bl1xl 'APx JSB+g; public void run() H@(O{ 9Yl; { 3H,x4L5j //获得文件长度 `Abd=1nH //分割文件 LGhK)]: //实例FileSplitterFetch j-9)Sijj{ //启动FileSplitterFetch线程 cM%?Ot,mK" //等待子线程返回 pN^g. try{ #aX#gh}1
if(bFirst) Z1,rN#p9 { 5{HF'1XgZ* nFileLength = getFileSize(); H q6%$!q if(nFileLength == -1) UV2W~g { }R;}d(C` System.err.println("File Length is not known!"); 1WtE ]
D } "w?0f[" else if(nFileLength == -2) tl_3 %$s { @g#5d|U); System.err.println("File is not access!"); ejd_ 85$ } $2uC%er"H else
?!Y_w2 { Z#}sK5s for(int i=0;i<nStartPos.length;i++) %UI^+:C { j/aJD E(+ nStartPos = (long)(i*(nFileLength/nStartPos.length)); kEh\@x[ } 4ior for(int i=0;i<nEndPos.length-1;i++) ovp/DM { Qhj']>#g nEndPos = nStartPos[i+1]; ddgDq0N1j } !SK`!/7c? nEndPos[nEndPos.length-1] = nFileLength; X2V+cre } ;y(;7n_ a } 9JdJn> k[8F: T- {H/%2 //启动子线程 I7_8oq\3D fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; qIJc\,' for(int i=0;i<nStartPos.length;i++) G
y[5'J` { _|\X8o_ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 0f5 ag& siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), W/UA%We3+L nStartPos,nEndPos,i); 0m3hL~0(a Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Zv}F?4T~: fileSplitterFetch.start(); brTNwRze } H|aFs.S EQ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), b"$?(Y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); -. *E<% // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", CWeQv9h]X nEndPos = " + nFileLength); .'=S1|_( // fileSplitterFetch[nPos.length-1].start(); Sqi9'-%m 7@"X?uo%o pJFn
8&!J //等待子线程结束 `!cdxKLR //int count = 0; #;8)UNc)} //是否结束while循环 9 &r]k8K boolean breakWhile = false; }36A eJ7L K{d3)lVYCS 9<3( QR while(!bStop) Tbm
~@k(C { #U- y<[
3 write_nPos(); "&H'?N%9Up Utility.sleep(500); A_TaXl( breakWhile = true; -G>J 8`L]<Dm j)/Vtf for(int i=0;i<nStartPos.length;i++) jvQ^Vh!mC { *m]Y6 if(!fileSplitterFetch.bDownOver) {*;8`+R& { K\ Wzh; breakWhile = false; bYLYJ`hH<R break; x"Ll/E)\v] } N?m)u,6-l } 9X*Z\- if(breakWhile) IiniaVuQ break; <%.%q te[uAJ1 N (^W}uDPCB //count++; cS Lj\'`b //if(count>4) U~=?I)Ni // siteStop(); 2W0nA t } @Nb/n <U$YJtEK 1M`>;fjYa System.err.println("文件下载结束!"); <SJ6<' } I._ A catch(Exception e){e.printStackTrace ();} }eSy]r[J } =( ZOn=IL 346 z`5 /
^)3V} //获得文件长度 *Z"cXg^ti public long getFileSize() 7Wef[N\x { =ttD5p int nFileLength = -1; *i*\dl try{ ^nZ=B>Yn2 URL url = new URL(siteInfoBean.getSSiteURL()); lO\HchGzB HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); WCd:(8B httpConnection.setRequestProperty("User-Agent","NetFox"); +E9G"Z65iP &M5v EPR ,W+=N"`a' int responseCode=httpConnection.getResponseCode(); ,l AZ4 if(responseCode>=400)
gwIR3u { V(kK2az processErrorCode(responseCode); N^B7<~ bD return -2; //-2 represent access is error +8ib928E } $G <r2lPy [<i3l'V/[ Q^<amM! String sHeader; N'{Yhx u ~I N g9| `\:Ede for(int i=1;;i++) &(<>}
r { ,L //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); l'<&H#A;' //Utility.log(in.readLine()); PO5,lcBD< sHeader=httpConnection.getHeaderFieldKey(i); \roJf&O } if(sHeader!=null) pGU.+[|( { W0x9^'=s\ if(sHeader.equals("Content-Length")) v8)wu=u { Ib{#dhV nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 7>im2"zm break; %_n%-Qn } An>ai N] } +D
@B eQu else b`%u}^B { break; <- sr& } \6GNKeN } V%[t'uh catch(IOException e){e.printStackTrace ();} {_W8Qm`. catch(Exception e){e.printStackTrace ();} U}HSL5v 5f_x.~ymA q8ZxeMqx% Utility.log(nFileLength); nv0D4 t 851BOkRal4 5X3JQ"z return nFileLength; tHaHBx1P } LTBH/[q5 tMdSdJ8 V1P]pP //保存下载信息(文件指针位置) |63uoRr private void write_nPos() ~9rNP{+ { 5fs,UH try{ k2loGvBJ output = new DataOutputStream(new FileOutputStream(tmpFile)); F+VNrt- output.writeInt(nStartPos.length); U5ph4G for(int i=0;i<nStartPos.length;i++) VQf^ y q { Uth+4Aq // output.writeLong(nPos); $C=XSuPNK output.writeLong(fileSplitterFetch.nStartPos); w)K547!00 output.writeLong(fileSplitterFetch.nEndPos); lNc0znY } m%eCTpYo output.close(); =ZoNkj/^, } 4T52vM catch(IOException e){e.printStackTrace ();} yS
K81` catch(Exception e){e.printStackTrace ();} `tO t+>YWn } *:\[;69[ oGZuYpa9 <% mD#S //读取保存的下载信息(文件指针位置) 6;~V@t private void read_nPos() o
S{hv:)> { b!MN QGs try{ 1Cc91 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); /xSJljexz int nCount = input.readInt(); {B#w9>'b nStartPos = new long[nCount]; zGme}z;1@ nEndPos = new long[nCount]; KN@ [hb7% for(int i=0;i<nStartPos.length;i++) i.K!;E> { r25VcY nStartPos = input.readLong(); LIJ#nb nEndPos = input.readLong(); !iHC++D } NG\'Ii:-J input.close(); N? S;v&q+ } 'G[G;?F catch(IOException e){e.printStackTrace ();} l`6.(6 catch(Exception e){e.printStackTrace ();} 5`}za- } O)R}| $uwz`N: b'FTyi private void processErrorCode(int nErrorCode) e7n0=U0 { TSJeS`I System.err.println("Error Code : " + nErrorCode); C:AV? } wYFkGih UZ<.R"aK C_;nlG6 //停止文件下载 <7T}b95 public void siteStop() ;9#W#/B { v}5YUM0H ` bStop = true; *E>R1bJ8 for(int i=0;i<nStartPos.length;i++) g>7i2 fileSplitterFetch.splitterStop(); 67H?xsk@n REcKfJTj bFG?mG: } 9A{D<h}yk } n}9<7e~/ //负责部分文件的抓取 8t< X **FileSplitterFetch.java ,[N(XstI */ Q|VBH5}1O package NetFox; X16O9qsh #u"@q< ) s7jNRY V import java.io.*; fhdqes]) import java.net.*; fwx^?/5j %#EzZD LH`$<p2''r public class FileSplitterFetch extends Thread { E>E^t=;[ 2!9W:I7 y%
!.:7Y String sURL; //File URL $zhvI*0 long nStartPos; //File Snippet Start Position >X[:(m' long nEndPos; //File Snippet End Position ut]&3f'' int nThreadID; //Thread's ID iBWEZw) boolean bDownOver = false; //Downing is over 7On.y* boolean bStop = false; //Stop identical lHliMBSc FileAccessI fileAccessI = null; //File Access interface $t6t 6<M) SY.koW g@t..xJ, public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException `6YN/"unfp { ]m&Ss this.sURL = sURL; ?|`n&HrP this.nStartPos = nStart; Az(,Q$"|5 this.nEndPos = nEnd; gDw(_KC nThreadID = id; 2cS94h fileAccessI = new FileAccessI(sName,nStartPos);//定位 TZn5s~t } G&Yo2aADR HsRoiqo L*p7|rq$" public void run() x~IrqdmW { ~rq:I<5 while(nStartPos < nEndPos && !bStop) Xmb##: { e<8KZ W?N+7_%' S<*1b 6%D try{ +?Q HSIQo URL url = new URL(sURL); VgY6M_V HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); W<O/LHKHdn httpConnection.setRequestProperty("User-Agent","NetFox"); <Vh5`-J String sProperty = "bytes="+nStartPos+"-"; p vWj)4e httpConnection.setRequestProperty("RANGE",sProperty);
t"~X6o|R Utility.log(sProperty); 1 K^-tms )-iUUak 5,O:"3>c InputStream input = httpConnection.getInputStream(); ZOppec1D //logResponseHead(httpConnection); eH*i_g' 3qV~C{S "WPWMQ+ byte[] b = new byte[1024]; cdI"=B+C\ int nRead; c>r~pY~$ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) &P*r66 { >$3 =yw% nStartPos += fileAccessI.write(b,0,nRead); uVX,[%*P //if(nThreadID == 1) _S*QIbO // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *y+K{ fM1 } ignOF .345%j $j!:ET'V Utility.log("Thread " + nThreadID + " is over!"); 2]x,joB bDownOver = true; <h~uGBS" //nPos = fileAccessI.write (b,0,nRead); Q/HEWk } !af;5F catch(Exception e){e.printStackTrace ();} {)kL7>u]^V } $fPiR } 3EA_-? OzxiT + !QqVJ a{j //打印回应的头信息 od !s5f! public void logResponseHead(HttpURLConnection con) QY\'Uu{ { `$JOFLa for(int i=1;;i++) W3X;c*j { or)fx/ %h String header=con.getHeaderFieldKey(i); |\ C.il7 if(header!=null) ,W]}mqV%.' //responseHeaders.put(header,httpConnection.getHeaderField(header)); :4\_upRE Utility.log(header+" : "+con.getHeaderField(header)); h7xgLe@ else h-m0Ro?6 break; h,/3} } b$*G&d5 } Jcp=<z*0 2 0A:,pMb S4E@wLi public void splitterStop() @}%kSn5y: { Idj Z2)$
bStop = true; D [v22 5 } mndEB!b ,yfJjV*I g ZES}]N } xKT;1(Mk ?]}=4 l`:-B'WM /* 1P BnGQYM **FileAccess.java F=UW[zy/[ *//文件访问(定位,写) COH.`Tv{* package NetFox; #S|On[Q! import java.io.*; h`tf!M D] 6iEA._y UyMlk public class FileAccessI implements Serializable{ '?$<k@mJW I
wu^@ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 |g\CS4$ RandomAccessFile oSavedFile; |c2;`T#`o long nPos; "nNT9
K| (d[JMO^@8 ?J"Y4,{ public FileAccessI() throws IOException `K2vG`c { fKs3H?| this("",0); CZCVC (/u } 2\Yv;J+; z-nV!# /DSy/p0% public FileAccessI(String sName,long nPos) throws IOException RS7J~Q { Vl:M6d1 oSavedFile = new RandomAccessFile(sName,"rw"); A<[w'" this.nPos = nPos; <.@w%rvG oSavedFile.seek(nPos); Sh<A936/E } (B].ppBii H_%ae'W <9Ytv|t@0 public synchronized int write(byte[] b,int nStart,int nLen) L\t!)X-4 { 4DGKZh'm" int n = -1; \JF 2'm\M try{ ><)fK5x oSavedFile.write(b,nStart,nLen); r+MqjdXG n = nLen; :O*62olC5 } Tz/[P:O3 catch(IOException e) 7{[i) { .R@euIva e.printStackTrace (); FJB
/tg } ~HBx5Cpi %bhFl,tL Z1DF ) return n; &Qv%~dvW } sDy~<$l? cdfnM% `>\ MIc(B_q } zOL*XZ0c 8w3Wy<}y TyaK_XW /* JaJyH%+$! **SiteInfoBean.java wV{VV?h} */ Wp=&nh package NetFox; XP@&I[J3sI ~rbJtz p;vrPS public class SiteInfoBean { c=IjR3F PW-sF p/jAr+XM private String sSiteURL; //Site's URL 9Cw !< private String sFilePath; //Saved File's Path v/G^yZa private String sFileName; //Saved File's Name ?? Dv\yLZI private int nSplitter; //Count of Splited Downloading File *18J$ EJTa~ S%w67sGl4n public SiteInfoBean() h56s ~(?O {//nSplitter的缺省值为5 G*^4CJ //default value of nSplitter is 5 ~#JX
0J= this("","","",5); |Fzt|
\ } &. "ltB V5]\|?= rK
cr1VFy public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) zm^5WH { bY=Yb sSiteURL= sURL; z-h7v5i" sFilePath = sPath;
yc@:*Z sFileName = sName; bKPjxN?!9 this.nSplitter = nSpiltter; ?*U:=| rj;~SC{
`AELe_ } ch0x*[N@ N|s8PIcSp (FNX>2Mv public String getSSiteURL() N_y#Y{c{( { (7}Zh|@W return sSiteURL; 2H`;?#Uq: } vb k4 :j%
B(@b kX'a*AG public void setSSiteURL(String value) yI$MqR { unkA%x{W; sSiteURL = value; X0%BE! } Z-z(SKL &d[% 4ak} "Z public String getSFilePath() 3 _c4+u"6 { [[8h*[: return sFilePath; ig:z[k? } \&%y4=y<sE v!rOT/I H?dEgubg7] public void setSFilePath(String value) ZvW&%*k= { O9MBQNwjA sFilePath = value; z%WOv~8~ } ]hA]o7k LfG$?<}hR Kl+4A}Uo public String getSFileName() dY]iAJ { K|{&SU_m return sFileName; q|R$A8)L. } 4S,/Z{ J. 3a6 Z`bo1,6> public void setSFileName(String value) SrSm%Dv { *XqS~G sFileName = value; %Wb$qpa } / ,
.rUn1 )]m_ L$9 ^VlPnx8y= public int getNSplitter() ("j*!Dsd { [fXC ;c1 return nSplitter; #Xd#Ncj } &pLCN[a ]7_O#MY1 8*yky public void setNSplitter(int nCount) tsqWnz=) { R{Qvpd$y nSplitter = nCount; ogKd}qTov } ,zrShliU } KXga{]G: =?-
sazF& jTq@@y /* Jl^THoEL **Utility.java JB\BP$ap */ &5;y&dh package NetFox; ffE>%M* gT4H?
#UB =)y=39&;/ public class Utility { aQhr$aH DYvg ^b 4xNzhnp| public Utility() O\qY?) { oq }Q2[.b vH9Gf t>>\U X } wKs-<b%; Yo#F ;s7 //线程睡眠 0_5j( public static void sleep(int nSecond) 7u7 <"?v= { )VCRbz"[g try{ H(Q|qckj Thread.sleep(nSecond); w*s#=]6 } zE<G wVI~ catch(Exception e) 2wG4" { /Q[M2DN@ e.printStackTrace (); }]?U.
]- } C:d$ } #NLLlEE jo8;S?+<|? //日志 $C !Mk public static void log(String sMsg) Eq?d+s> { dd%-bI^ System.err.println(sMsg); p~THliwd } 6
bnuC &OSyU4r Nd4!:. public static void log(int sMsg) j;b<oQH { 1z[GY RSt System.err.println(sMsg); y:+s*x6Vg } s%R'c_cGZ } -'!%\E;5 U1^R+ *yp `L=$,7` /* S4Vv _k-&
**TestMethod.java sZhl.[&zo */ NTtRz( package NetFox; :+>:>$ao
S*1Km& NCM&6<_ public class TestMethod { :Gz# 4k zl!`*{T{ Soa5TM public TestMethod() /M "E5 { ///xx/weblogic60b2_win.exe <KDl2>O try{ Rl""
aZ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); yxa~Rz/ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 3yAzt*dZ SiteFileFetch fileFetch = new SiteFileFetch(bean); vYNh0)$%F fileFetch.start(); J12ZdC'O } ?=uw0~O[ catch(Exception e){e.printStackTrace ();} b]h]h1~hHH o[!g,Gmoh 4;ig5'U, } 5PQs1B =Jx,.|Bf E*Q><UU public static void main(String[] args) zoV-@<Eh { jF\J+:5M new TestMethod(); I!;# Nk> } ,e
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