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/* px<psR5 **SiteFileFetch.java b^VRpv */ E{<#h9=> package NetFox; {^z73Gxt, import java.io.*; DjM*U52Yfj import java.net.*; AH#mL F:!6B b C rx2)uUbR public class SiteFileFetch extends Thread { Vr
EGR$ t1Fqq4wRi 2iG+Ek-?" SiteInfoBean siteInfoBean = null; //文件信息Bean QN#"c long[] nStartPos; //开始位置 6G2~'zqPc~ long[] nEndPos; //结束位置 ,c&u\W=p FileSplitterFetch[] fileSplitterFetch; //子线程对象 f~NS{gL* long nFileLength; //文件长度 &DWSf`:Hx boolean bFirst = true; //是否第一次取文件 M0w Uis:` boolean bStop = false; //停止标志 EB}B75)x File tmpFile; //文件下载的临时信息 ij$NTY=u DataOutputStream output; //输出到文件的输出流 H~Uf2A)C 1
pVw,} //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 4Y8= public SiteFileFetch(SiteInfoBean bean) throws IOException ,`bW(V { F9
r5 Z siteInfoBean = bean; "z{/*uM2< //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <[k3x8H' tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); C}h(WOcr`X if(tmpFile.exists ()) )/jDt dI { TRi'l #m4 bFirst = false; rWTaCU^qV read_nPos(); .V
hU:_u } 6{I7)@>N else C~h#pAh { y~+LzDV nStartPos = new long[bean.getNSplitter()]; B~I ]3f nEndPos = new long[bean.getNSplitter()]; j\>&]0-Iq } Xex7Lr& !V.]mI Q#% LIkeq HIc;Lc8$ } }rJqMZ]w @ym:@<D ] V/5<O1 public void run() >Lcu { m~+.vk //获得文件长度 wrkw,H //分割文件 "o--MBq4 //实例FileSplitterFetch &>c=/]Lop //启动FileSplitterFetch线程 .V!5Ui< //等待子线程返回 Vx!ZF+ try{ xQZOGq if(bFirst) vE[d& b[ { MEI&]qI nFileLength = getFileSize(); [\ku,yd%0 if(nFileLength == -1) ()|e
xWW { hWt_}' System.err.println("File Length is not known!"); tXzuP_0 } c^_+<C-F else if(nFileLength == -2)
iK4\N;H { $D`Kz*/. System.err.println("File is not access!"); 3mo<O}} } gkK(7=r% else :tV"uWZFU { bzG vnaTt for(int i=0;i<nStartPos.length;i++) 2_Lu0Yrg { Lj /^cx nStartPos = (long)(i*(nFileLength/nStartPos.length)); W(qK?"s2 } n!zB+hW for(int i=0;i<nEndPos.length-1;i++) ):Fg {7b]n { Wgf
f+7k nEndPos = nStartPos[i+1]; 9vi+[3s/=; } _&HFKpHQ nEndPos[nEndPos.length-1] = nFileLength; vmgd } s[4 qC } JXuks`:Q p!E*ANwX AIP0PJI3 //启动子线程 M7qg\1L fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; R Q8"vF# for(int i=0;i<nStartPos.length;i++) x6aVNH= { :2
\NG} fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), G$)q% b;Lz siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), }Q[U4G nStartPos,nEndPos,i); 5#z7Hj&w Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); c
CjN8< fileSplitterFetch.start(); =8vwaJ } O4nA?bA // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), fm#7}Y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); D8k >f ] // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", uaD+G:{[ nEndPos = " + nFileLength); aAcQmq TT // fileSplitterFetch[nPos.length-1].start(); yodhDSO5i UChLWf|' *r4FOA%P //等待子线程结束 >]B_+r0m^ //int count = 0;
2X`t&zg //是否结束while循环 7yG%E boolean breakWhile = false; rXSw@pqZ& hB'rkjt k'v+/6 Y while(!bStop) mb'{@ { ^!m%:r7Dr write_nPos(); l(MjLXw5 Utility.sleep(500); nF-l4 = breakWhile = true; 9n5uO[D ?5G;=#I 4{,!'NA for(int i=0;i<nStartPos.length;i++) 2UR1T~r { UN<$F yb if(!fileSplitterFetch.bDownOver) auB+ g'l { (wH+ 0 breakWhile = false; C\[:{d break; #.FhN x } (Rs;+S } &/Gf@[ if(breakWhile) 9r:|u:i7m break; \1u^?cBd \0*dKgN _+Z;pt$C //count++; H H3Z?g //if(count>4) f4`Nws-dP // siteStop(); [+@T"2h2b } P e}
T z3^gufOkQ >of9m System.err.println("文件下载结束!"); CTqhXk[ } &i805,lx catch(Exception e){e.printStackTrace ();} ?J| } _Kli~$c& M D=f$-rn Y|#<kS //获得文件长度 Zirp_[KZ% public long getFileSize() cNKGEm
;z { ocS}4.a@ int nFileLength = -1; RdjoVCf try{ ,7d#t4 URL url = new URL(siteInfoBean.getSSiteURL()); 7OPRf9+o HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); xyV7MW\?w httpConnection.setRequestProperty("User-Agent","NetFox"); xNJ*TA[+ nh+h3"-d Ix@nRc' int responseCode=httpConnection.getResponseCode(); ~1Ffu x if(responseCode>=400) ZlMS=<hgFx { 6m:$RW processErrorCode(responseCode); p`"Ic2xPJ return -2; //-2 represent access is error on7?V< } l>oJ^J : t
D`e< ;Rxc(tR!n String sHeader; aMK\&yZD z2A,*|I 9+Wf*:*EW for(int i=1;;i++) NwKj@ Jos { f(EO|d^u //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 1#zD7b~ //Utility.log(in.readLine()); i\>?b)a> sHeader=httpConnection.getHeaderFieldKey(i); ^= kr`5 if(sHeader!=null) '~{kR=+ { V_4=0( if(sHeader.equals("Content-Length")) MHCwjo" { CQ{pv3) nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /BS yanro break; M3fTUCR } ]<;y_ } d|sf2 else =+VDb5= TV break;
msq2/sS~ } ziQ&M\ } Wq25, M' catch(IOException e){e.printStackTrace ();} wF-H{C' catch(Exception e){e.printStackTrace ();} kb\\F:w(W 5p7i9"tgn KO))2GET Utility.log(nFileLength); e[QEOx/-h2 HSACaTVK /W{^hVkvC return nFileLength; w,1*dn } 94lz?-j ~'Korxa US<l4 //保存下载信息(文件指针位置) r+a0. private void write_nPos() @><8YN^)% { 7Xh
;dJAF3 try{ +~xzgaL
output = new DataOutputStream(new FileOutputStream(tmpFile)); ,y)V5
c1 output.writeInt(nStartPos.length); T|--ZRYn for(int i=0;i<nStartPos.length;i++) i@=(Y~tD` { Xk :_aJ // output.writeLong(nPos); a!&<jM output.writeLong(fileSplitterFetch.nStartPos); 0|mCk output.writeLong(fileSplitterFetch.nEndPos); BtF7P}:MGf } `nd$6i^#W output.close(); ddlF4L_ } j9f Q V catch(IOException e){e.printStackTrace ();} "i%=QON` catch(Exception e){e.printStackTrace ();} HC$}KoZkC } A4)TJY
3g 5_rx$avm /vLW{ % //读取保存的下载信息(文件指针位置) DH])Q5 private void read_nPos() .aC/ g?U { 7Y
4! try{ G#. q%Up DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (Wn^~-`=+ int nCount = input.readInt(); Xz'o<S nStartPos = new long[nCount]; p-6T,') nEndPos = new long[nCount]; G[zVGqk for(int i=0;i<nStartPos.length;i++) G4EuW *~ { e'3y^Vg nStartPos = input.readLong(); [n$6T nEndPos = input.readLong(); %\1W0%w } O~5*X f input.close(); ,UxAHCR~9 } *3(mNpi{_ catch(IOException e){e.printStackTrace ();} T?*f}J catch(Exception e){e.printStackTrace ();} 5~RR
_G } xQxq33\ mfk^t`w_ 3oApazH* private void processErrorCode(int nErrorCode) dSE"G>l8 { g7v(g? System.err.println("Error Code : " + nErrorCode); (J.U{N v } Sj<]~*y" b%xG^jUXsX }u;`k'J@ //停止文件下载 &Y2Dft_K public void siteStop() "BC;zH: { :d|~k bStop = true; 3
5p)e c for(int i=0;i<nStartPos.length;i++) R-Gg= l5 fileSplitterFetch.splitterStop(); YN7JJJ/~T }k@SmO8 mv#*%St5 }
tPFj[Y~Iy } eI/5foA //负责部分文件的抓取 [I(
Yn **FileSplitterFetch.java ;IR.6k$; */ ,b t
j6hg package NetFox; rb]?"lizi |}o3EX /PE L[Os import java.io.*; :CP,DO import java.net.*; ka*#O"}L8 FlT5R*m WIw*//nw public class FileSplitterFetch extends Thread { 5p~hUP]tT SnY{| tcJN`N String sURL; //File URL D/Py?<n-B long nStartPos; //File Snippet Start Position ZQ_AqzT3D long nEndPos; //File Snippet End Position *_K*GCy int nThreadID; //Thread's ID ULzrJbP'7 boolean bDownOver = false; //Downing is over o`Q.;1(Y' boolean bStop = false; //Stop identical uP^u:'VjbH FileAccessI fileAccessI = null; //File Access interface KESM5p"f bv}e[yH E^m;Ab= public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException M]SeNYDy { f%rZ2h) this.sURL = sURL; wotw nE this.nStartPos = nStart; sAoxLI this.nEndPos = nEnd; YVPLHwh/5 nThreadID = id; 6K^O.VoV^J fileAccessI = new FileAccessI(sName,nStartPos);//定位 wQ81wfr1: } No*[@D]g
H`rd bE (btmg<WT" public void run() H4<Q}([w { V+t's*9o3 while(nStartPos < nEndPos && !bStop) l\ VrD2j8 { $t0JfDd6Ky _7'5I A upGLZ# try{ _IWLC{%V URL url = new URL(sURL); xcH&B%;f HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); #tA/)Jvi httpConnection.setRequestProperty("User-Agent","NetFox"); W"&,=wvg2 String sProperty = "bytes="+nStartPos+"-"; }d%Fl}.Ez httpConnection.setRequestProperty("RANGE",sProperty); 9^@)R
ED Utility.log(sProperty); bbT$$b- DTHWL \susLD InputStream input = httpConnection.getInputStream(); R$;TX^r'o& //logResponseHead(httpConnection); `i<Z<
<c> h=B=
J >~_)2_j byte[] b = new byte[1024]; eg24.W9c int nRead; N! I$Qtr, while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) R[OXYHu { -_XTy!I nStartPos += fileAccessI.write(b,0,nRead); z7TyS.z //if(nThreadID == 1) 6w[EJ;=p_ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wOsg,p;\' } I{=Yuc 45WJb+$ fg4mP_ Utility.log("Thread " + nThreadID + " is over!"); U*?`tdXJ$ bDownOver = true; Zn[ppsz| //nPos = fileAccessI.write (b,0,nRead); %< `D'V@ } =nqHVRA catch(Exception e){e.printStackTrace ();} dg_w$# } 5]n\E?V'L } [v`kqL~ :aH5=@[!y gFsqCx<q //打印回应的头信息 Eihn%Esa public void logResponseHead(HttpURLConnection con) "F[7b!>R { _<=h#lH for(int i=1;;i++) lnRL^ } { -!}3bl*(7 String header=con.getHeaderFieldKey(i); h}kJ,n if(header!=null) -gUp/#l1 //responseHeaders.put(header,httpConnection.getHeaderField(header)); %Aqf=R_^ Utility.log(header+" : "+con.getHeaderField(header)); $lq.*UQ;0 else SmIcqM break; aemi;61T\ } opMnLor } /aIGq/;Y+a
]sJC%/ 'gHg&E9E& public void splitterStop() Xj~%kPe { ~S\> F\v6' bStop = true; ;#:AM; } -&=dl_m @w`wJ*I4, qG ? :Q } n>w<vM Np aS2q-d IdK<:)Q /* n2EPx(~ **FileAccess.java Hq!|r8@6 *//文件访问(定位,写) </u=<^ire package NetFox; *QV"o{V import java.io.*; ambr}+}
x0WinLQ YV!hlYOBi public class FileAccessI implements Serializable{ 2;0eW&e 0[e!/*_V //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 6?;z\AP& RandomAccessFile oSavedFile; 9g>)7Ne long nPos; 8g
Z)c\ @5ud{"|2 2`TV(U@ public FileAccessI() throws IOException c+
e~BN { 8;r #HtFM this("",0); *0to,$ n } i;-M8Q^ v?Utz~lQ gu+zfvkcY public FileAccessI(String sName,long nPos) throws IOException aU^6FI { b?c/J{me oSavedFile = new RandomAccessFile(sName,"rw"); U7?v4O]D[ this.nPos = nPos; 0Qq<h;8xEc oSavedFile.seek(nPos); =*"8N-FU } ]Yw$A ts9wSx~[+ a[ayr$Hk? public synchronized int write(byte[] b,int nStart,int nLen) ^
nI2<P { GEA1y^b6" int n = -1; g,rmGu3v try{ _DH^ K9,9 oSavedFile.write(b,nStart,nLen); m\X\Xp~A n = nLen; J=k=cFUX } }ML2-k catch(IOException e) &lLfVa-l { U||GeEd e.printStackTrace (); =$fz</S=J } ,w3-*z b^Re947{g gXJBb+P
return n; `Z8k#z'bN } <|jh3Hlp }Sbk qd5 pCA`OP);= } IEMa/[n/ 7HBf^N. zh*D2/r /* FK593z **SiteInfoBean.java ?-vWNv */ dGn0-l'q package NetFox; eqsmv[ j~G(7t rpK&OR/ public class SiteInfoBean { RYjK4xT?Y/ }b&lHr'Uw ?VmgM"'md private String sSiteURL; //Site's URL oV0T
private String sFilePath; //Saved File's Path #Uu,yHMv:; private String sFileName; //Saved File's Name W>C?a=r~ private int nSplitter; //Count of Splited Downloading File f|FS%]fCxk ]LUcOR tVEe) QX public SiteInfoBean() {0Y6jk>I {//nSplitter的缺省值为5 $_E.D>5^%7 //default value of nSplitter is 5 k#Sr; " this("","","",5); &hI!mo } IBo <D ~hhGb T\uIXL?3 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) rZJJ\ , | { e,/]]E/o sSiteURL= sURL; ZK+F<} sFilePath = sPath; jDpA>{O[ sFileName = sName; 94BH{9b5 this.nSplitter = nSpiltter; ={sjoMW YM:sLeQ~c 5@m
,*n&[ } ]690ey$E:j (.cA'f?h r|u[36NmA public String getSSiteURL() z R?R,k)m { w;`Jj- return sSiteURL; $|- Lw!)D } m0TV i] v JM,%|
E _d5:Y public void setSSiteURL(String value) Y
b3ckktY { rs{)4.I sSiteURL = value; Sk cK>i.[ } ;v@ G gGL}FNH Ne1Oz} public String getSFilePath() 0BlEt1e2T { f?Zjd&|Ch return sFilePath; <v|"eq} } ,bl }@0A IDH~nMz 6I
+0@,I public void setSFilePath(String value) ES&u*X: { 7qB4_ sFilePath = value; 1"ZtE\{
" } Hyy b0c^= QIGU i,R eyD V911 public String getSFileName() DJ, LQj { i *.Y return sFileName; >,{sFc } Q^Cm3|ZO BqNeY<zB* f47]gtB- public void setSFileName(String value) z}!g2d { pD%(Y^h? sFileName = value; O D}RnKL } ~~OFymQ%?q **hQb$ #y:D{%Wp public int getNSplitter() g8##Be { 51q|-d return nSplitter; u]IbTJ' } kWXLncE Kd5'2"DI wc;n=
% public void setNSplitter(int nCount) 2F:qaz { }8ubGMr,Y nSplitter = nCount; 7EE{*}?0E } T?pS2I~ } \sAaVdZJH( H`CID*Ji qgrJi +WZ /* U|}
?{x **Utility.java VV$t*9w */ ,/{e%J package NetFox; ?uq`| 1` ApCU|*r) ]$@a.#} public class Utility { kcCCa@~v ^HC6v;K 6eV#x%z@v' public Utility() W "'6M=* { $y8-JR~ 1D*=ZkA) 1|MRXK } ]y0Y ( }<04\t? //线程睡眠 'I]XX==_ public static void sleep(int nSecond) )!"fUz$ { +-!E%$ try{ S\A/*!%~y Thread.sleep(nSecond); X2|~(* } R@o&c%K" catch(Exception e) 'o-4' { 7)lEZJK&T e.printStackTrace (); m-Eh0Zl>Z } dz_S6o ] } R*[sO*h\k =fcg4h5( //日志 KxkBP/`3Q public static void log(String sMsg) p~$cwbQ! { O(T5 System.err.println(sMsg); $H)^o! } 4@PA+(kvS Xqf,_I=V |THpkfW public static void log(int sMsg) :o'x?] { 3Z
b]@n System.err.println(sMsg); dvB=Zk]m } yix[zfQt0 } jc5[r;# ')"+ a^c CvoFt=c$jE /* npdljLN **TestMethod.java %_OjmXOfe */ ^#Ii=K-[^ package NetFox; <u64)8' N''QQBUD yKc-:IBb{u public class TestMethod { u R0UfKK b[74$W{ T`&zQQ6F' public TestMethod() rW{!8FhI { ///xx/weblogic60b2_win.exe 0pZvW try{ ]@{Lx>Oh" SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); my?Ly(# //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5);
jxog8E SiteFileFetch fileFetch = new SiteFileFetch(bean); |toP86 fileFetch.start(); yb`PMj j15 } C96/ catch(Exception e){e.printStackTrace ();} R_!.vGhkN $YSXE
: 9wvlR6z;u } QQ(}71U L+am-k:T~ 3Ua?^2l public static void main(String[] args) EW
`hL~{ { b#VtPn] new TestMethod(); 3!CUJs/W }
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