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/* bG^E]a/D **SiteFileFetch.java KB&t31aq */ xHJ+! package NetFox; /6gqpzum4 import java.io.*; )KaQ\WJ: import java.net.*; Zu$f-_" /!eC;qp;[ C&NoEtL>s public class SiteFileFetch extends Thread { 59$mfW
o> 7_E+y$i= 6^mO<nB SiteInfoBean siteInfoBean = null; //文件信息Bean HMgZ&v long[] nStartPos; //开始位置 ?qHW"0Tjn long[] nEndPos; //结束位置 _R8)%<E FileSplitterFetch[] fileSplitterFetch; //子线程对象 lk}R#n$ long nFileLength; //文件长度 'iXjt
MX boolean bFirst = true; //是否第一次取文件 Mn7 y@/1 boolean bStop = false; //停止标志 wI
#_r_ File tmpFile; //文件下载的临时信息 z/F(z*'v DataOutputStream output; //输出到文件的输出流 QD+dP nZu w<J$12
"p+ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 2(5wFc public SiteFileFetch(SiteInfoBean bean) throws IOException `2J6Dz"W { `;hsOfo siteInfoBean = bean; oE"! //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); n1y#gC tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); r7C
m if(tmpFile.exists ()) yHCQY4/ { G+m|A*[> bFirst = false; UB .FX read_nPos(); h[C!cX } yf3%g\k else {Ylj] { 9H1R0iWW nStartPos = new long[bean.getNSplitter()]; \r324Bw>2 nEndPos = new long[bean.getNSplitter()]; k1$|vzMh } <Sm=,Sw k:m~'r8z
f3y_&I+zl I?4J69' } V F6OC4 K 7T_g?!sdMh @s/;y VVq public void run() 42Gr0+Mb { qoB //获得文件长度 O*H:CW //分割文件 MZ=U}
&F //实例FileSplitterFetch }UXj|SY //启动FileSplitterFetch线程 0Ny0#;P
//等待子线程返回 ;?=nr 5;q try{ RNRMw;cT if(bFirst) /B|#GJ\\3 { >]T(}S~ nFileLength = getFileSize(); WE|L{ if(nFileLength == -1) :&6QKTX { `Wn0v2@a(~ System.err.println("File Length is not known!"); g}ciG!0 } Hi,_qlc+ else if(nFileLength == -2) K?-K<3]9f { p|(910OEQ System.err.println("File is not access!"); /:ma}qGy } qAR~js`5 else rU<
H7U { Z:O24{ro5 for(int i=0;i<nStartPos.length;i++) >^|\wy { M`BD]{tN} nStartPos = (long)(i*(nFileLength/nStartPos.length)); ^=OjsN } r5lp<md for(int i=0;i<nEndPos.length-1;i++) Z>o;Yf[ { gWy2$) nEndPos = nStartPos[i+1]; eK/[jxNO } $'L(}gNv5 nEndPos[nEndPos.length-1] = nFileLength; #q==GT7 } wMt?yc:X } (LL4V
3) \dIIZSN [p}J=1S //启动子线程 \{{B57/Isq fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 0J@)?,V-. for(int i=0;i<nStartPos.length;i++) i&mu=J[ { pA(@gisg fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N(t1?R/e, siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), vq( @B nStartPos,nEndPos,i); Z(/jQ=ozQ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); P~ffgzP fileSplitterFetch.start(); ll[U-v{ } ^uIZs}=+ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "JJ )w0 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); lsJ'dS // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", sb4r\[? nEndPos = " + nFileLength); :'1ePq // fileSplitterFetch[nPos.length-1].start(); oIoJBn Wf0ui1@ #`y7L4V*o //等待子线程结束 .H7"nt^ //int count = 0; {r[*}Bv
//是否结束while循环 PovPO boolean breakWhile = false; :V}8a!3h =]-! <gf:QX! while(!bStop) r^WO$u|@i { [rqq*_eB write_nPos(); *|_u~v:)|5 Utility.sleep(500); >,uof ? breakWhile = true; 1ww|km kl3#&>e s)
V7$D for(int i=0;i<nStartPos.length;i++) k5g\s9n] { CM9+h;Zm if(!fileSplitterFetch.bDownOver) ;[gv-H { 1MfRFv breakWhile = false; #vLDN R break; t8]u#bx"? }
4?jhZLBU } HmbTV(lC if(breakWhile)
6$fC
R break; 'qQDM_+ wqA5GK>m2 ]$0{PBndW //count++; 1PLKcU //if(count>4) [OH>NpL // siteStop(); 2/B(T5PY@ } d@,q6R}!MP ]y.,J |06J4H~k System.err.println("文件下载结束!"); %b@>riR(y } rAP+nh ans catch(Exception e){e.printStackTrace ();} >4LX!^V" } -s:JD J* 5jx{O${u O=c& //获得文件长度 6K?+ad Klc public long getFileSize() YJrK oK} { m='+->O*'l int nFileLength = -1; FCqs' try{ {'>X6: URL url = new URL(siteInfoBean.getSSiteURL()); GN=F-*2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); `n5RDz/f0 httpConnection.setRequestProperty("User-Agent","NetFox"); "=4=Q\0PT Y$oBsg\v "TN}=^A\F int responseCode=httpConnection.getResponseCode(); >6jyd{ if(responseCode>=400) r)U9u 0 { HV>|f'45 processErrorCode(responseCode); ks(PH6:]< return -2; //-2 represent access is error kE6\G}zj } 1DZGb)OU DU}q4u@) M&Ycw XV:Z String sHeader; b-~`A;pr c{FvMV2em qDcl;{L for(int i=1;;i++) .JQR5R |Q { b!7"drge: //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 8&dmH& //Utility.log(in.readLine()); N_/&xHw sHeader=httpConnection.getHeaderFieldKey(i); :Tj,;0#/ if(sHeader!=null) Ai#W.
n { .z+QyNc: if(sHeader.equals("Content-Length")) EWH'x$z_q { joM98H@ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); g*Cs/w break; ;]<$p[m } 9H.E15B } sjShm else Z~$& h break; LR9dQ=fHS } .lTGFeJqZ4 } QKCk. 0Xe catch(IOException e){e.printStackTrace ();} -R6z/P(} catch(Exception e){e.printStackTrace ();} 9D8el}uHf 8V~w3ssz yDy3;*lE Utility.log(nFileLength); )O2^?Q quS <7^_M*F9 ,YH^jc return nFileLength; siyJjE)}w } }\l5|Ft[! `[o^w(l:5@ ;=UrIA@y;= //保存下载信息(文件指针位置) ~rn82an@G private void write_nPos() 8?I(wn { Fnll&TF try{ ZH&%D*a& output = new DataOutputStream(new FileOutputStream(tmpFile)); #kma)_X output.writeInt(nStartPos.length); -Frx {3 for(int i=0;i<nStartPos.length;i++) NUx%zY { o{zo-:>Jp // output.writeLong(nPos); q/%f2U%4: output.writeLong(fileSplitterFetch.nStartPos); 6aMqU?- output.writeLong(fileSplitterFetch.nEndPos); 7i6-Hq } h-jea1m output.close(); hnG'L*HooE } $!KV]] catch(IOException e){e.printStackTrace ();} m_(+-G catch(Exception e){e.printStackTrace ();} ULQ*cW&;? } jQsucs5$h dwAju:-H *K m%Vl //读取保存的下载信息(文件指针位置) !:e}d+F private void read_nPos() atW;S99# { )v
['p try{ B6=8cf"i DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); '+' int nCount = input.readInt(); Ibpk\a?A{ nStartPos = new long[nCount]; |\N[EM%.@ nEndPos = new long[nCount]; 6!b9 6bV for(int i=0;i<nStartPos.length;i++) l'-iIbKX { LFg<j1Gk` nStartPos = input.readLong(); $IB@|n nEndPos = input.readLong(); e&]XiV' } E: XzX Fxx input.close(); <7)Vj*VxC } JUwP<C[ catch(IOException e){e.printStackTrace ();} )t@OHSl catch(Exception e){e.printStackTrace ();} p~=%CG^5 } Kw925@W
`db++Z'C @c7 On)sy private void processErrorCode(int nErrorCode) fN t { 1Pn!{ bU3@ System.err.println("Error Code : " + nErrorCode); i,* DWD+ } \<;/)!Nmw G7zfyw}W inR8m 4c]P //停止文件下载 % J+'7'g public void siteStop() 80:na7$)# { ap_(/W bStop = true; I>ofSaN for(int i=0;i<nStartPos.length;i++) qYbod+UX fileSplitterFetch.splitterStop(); V3F2Z_VH2 0/-[k FC vR } I /> .P } c$1ez //负责部分文件的抓取 Qv']*C[!z **FileSplitterFetch.java {e>}.R */ }ZR3 package NetFox; 97<Y.
0 <3ovCqa LTFA2X&E= import java.io.*; /z5j.TMs import java.net.*; #J1a `}x C2DNyMu cBc6*%ZD public class FileSplitterFetch extends Thread { H:p(C?tk{ H|75, !< -OVJ] String sURL; //File URL #YjV3O5< long nStartPos; //File Snippet Start Position 9u"im+=: long nEndPos; //File Snippet End Position ZLo3
0* int nThreadID; //Thread's ID rpy`Wz/[ boolean bDownOver = false; //Downing is over I"Y?vj9] boolean bStop = false; //Stop identical ?Yz.tg FileAccessI fileAccessI = null; //File Access interface ;jI\MZ~l\ o$Hc5W([Z zg|yW6l)9 public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Ntg#-_] { #N,\c@Gy this.sURL = sURL; {s_0[> this.nStartPos = nStart; n |.- :Zy this.nEndPos = nEnd; :n>:*e@w% nThreadID = id; $c f?`k fileAccessI = new FileAccessI(sName,nStartPos);//定位 ?CM,k0 } .hZ =8y9 %xWmzdn vT3LhN+1 public void run() *1%=?:$(r6 { bNIT 1'v while(nStartPos < nEndPos && !bStop) b\H(Lq17 { 213D{#2 [xM07%:
Z p]Bs try{ 7Zr jU{ URL url = new URL(sURL); 5F&i/8Ib HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); v }P~g httpConnection.setRequestProperty("User-Agent","NetFox"); EL~s90C String sProperty = "bytes="+nStartPos+"-"; @yobT,DXi httpConnection.setRequestProperty("RANGE",sProperty); h-!(O^M Utility.log(sProperty); &tp5y}=n Wpj.G -YSn 3= InputStream input = httpConnection.getInputStream(); '_(oa<g //logResponseHead(httpConnection); VwtGHF' lWnV{/q\X 1\zI#"b ^ byte[] b = new byte[1024]; aU#8W.~ int nRead; \U~ggg0h while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) =U|J{^ >I { ls#O0 nStartPos += fileAccessI.write(b,0,nRead); VAq(
t //if(nThreadID == 1) 9chiu%20 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9x{T"' } LnR3C:NO k x40R)Led Km\M/j| Utility.log("Thread " + nThreadID + " is over!"); X,T^(p bDownOver = true; y0A2{'w //nPos = fileAccessI.write (b,0,nRead); | b@?]M } (
B50~it catch(Exception e){e.printStackTrace ();} r!Mr\ } /D)@y548~~ } ,9W 0fm\t YXD1B`23 T5Pc2R //打印回应的头信息 Hi.JL public void logResponseHead(HttpURLConnection con) HJ_xg6.x { #1m!,tC for(int i=1;;i++) `{tykYwCLc { vuw1ycy) String header=con.getHeaderFieldKey(i); ts9N$?0:V if(header!=null) rV2}> k //responseHeaders.put(header,httpConnection.getHeaderField(header)); gdkO|x Utility.log(header+" : "+con.getHeaderField(header)); 2.; OHQTE else j}h50*6KO break; mP:mzmUw } @6t3Us~/ } $,6= .YuY =E
|[8 U) CR,
Y%0vQ public void splitterStop() gvwR16N { +Pa!pj/< z bStop = true; F}.Af=<Q } y/kCzDT, ,ew<T{PL S6]D;c8GE } !4*@H b<:s{f"t, xn6E f" /* $F/&/Aa **FileAccess.java `_<AZ{&& *//文件访问(定位,写) lXB_HDY package NetFox; XWB>'
UDQ# import java.io.*; w)!(@}vd U*6-Y%7 y`(z_5ClT public class FileAccessI implements Serializable{ jhg!K.A zIdQ^vm8Q //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 x/9`2X`~ RandomAccessFile oSavedFile; ngdVRJL long nPos; qqkZbsN +mF}j=k kWoy%?|RRa public FileAccessI() throws IOException z<AQ;b { SM^6+L"BE this("",0); 6qHo$#iT } x80~j(uVf <|m"Q!f [{Y$]3?} public FileAccessI(String sName,long nPos) throws IOException lezdJ { <BO|.(ys oSavedFile = new RandomAccessFile(sName,"rw"); g5T~%t5lo this.nPos = nPos; x"N,oDs oSavedFile.seek(nPos); if`/LJsa } 'nCBLc8 XPY66VC&_ #z5'5|3 public synchronized int write(byte[] b,int nStart,int nLen) 3w^q 0/GD { H=wmN0s{< int n = -1; z:fd'NC try{ hl# 9a? oSavedFile.write(b,nStart,nLen); [IHT)%>E8& n = nLen; 8, WQ}cC }
o>W}1_ catch(IOException e) dXdU4YJX { ^ 0TJys% e.printStackTrace (); 9VP|a- } MKQa&Dvw \!631FcQ }K&K{ 9} return n; }7&;YAt } 3z5,4ps bJe^x;J9 qA03EU } !E$S&zVMQ !>2s5^JI9 -`Z5#8P /* S"}FsS;k<? **SiteInfoBean.java #"f:m` */ fTH?t_e package NetFox; 6?hv,^ r]8B6iV U2SxRFs >
public class SiteInfoBean { ~v<r\8`OI2
wN*e6dOF @gTpiV2 private String sSiteURL; //Site's URL 8LiRZ" private String sFilePath; //Saved File's Path VT+GmS private String sFileName; //Saved File's Name > m5j.GP; private int nSplitter; //Count of Splited Downloading File Gz6FwU8L Z\@vN[[ -;Hd_ ~O>j public SiteInfoBean() op}x}Ioz {//nSplitter的缺省值为5 q>H!?zi\Hy //default value of nSplitter is 5 JfC.U,7Nc this("","","",5); LkNfcBa_ } 8U=M.FFp ;ATk?O4T 5oORwOP public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) {;z3$/JB { )Hw;{5p@ sSiteURL= sURL; /V3*[ sFilePath = sPath; ?(ks=rRK sFileName = sName; drN^-e this.nSplitter = nSpiltter; /i$&89yod Tm`QZh3 &_!BMzp4 } Pyk~V)~M N}s[0s %f,
9 public String getSSiteURL() .F%!zaVIu { jixU9] return sSiteURL; E{lq@it32p } [0_Kz"| /&ph-4\i } #%sI"9 public void setSSiteURL(String value) ym1TGeFAq { s31^9a sSiteURL = value; 0Z9jlwcQ } "hQV\|!\ LscAsq<H< Sqfa,3?L public String getSFilePath() U>X06T { ]4hXK!^Uu return sFilePath; 36lIV,YnU } mflI> J=g AV%Q5Mi} V+D "_ public void setSFilePath(String value) d8Upr1_ { I] sFilePath = value; =U@*adgw } V&GFGds u1nv'\* 3ON]c13 public String getSFileName() vqL{~tR { SHwl^qVk[ return sFileName; R[#5E|` `9 } 0<i~XN0g %/UQ0d~b Q~*A`h# public void setSFileName(String value) XFBk:~}sI { +>I4@1qC-| sFileName = value; ~2"|4 } ',O@0L]L wmoOp;C DJ<e=F! public int getNSplitter() cHR }`U$ { fWLsk return nSplitter; /M'b137 } <v{jJ7w 7s[ ATu j^64 :3 public void setNSplitter(int nCount) r
Ssv^W+ { X;}_[=- nSplitter = nCount; 1BWuFYB } s)To# } !`aodz*PO [s7I.rdGzz (/hF~A /* _Juhl^LM; **Utility.java 6 a$% */ uAJ_`o[ package NetFox; =jG3wf* b<[eBXe 'ugG^2Y public class Utility { pXQ&2s$ AV8TP-Ls+ C8n1j2G\ public Utility() Ni0lj: { +bQn2PG= :;|x'[JoE? V];RQWs } ;eA~z"g $/d~bk@=l //线程睡眠 "Dy&` public static void sleep(int nSecond) Bq2}nDP { vJcvyz#%1 try{ 1w5p*U0 ; Thread.sleep(nSecond); $~9U-B\ } d&U;rMEv catch(Exception e) w$t2Hd { D@Wm- e.printStackTrace (); 1yKf=LZ^ } @B[=`9KF[ } :!#-k E3KPjK //日志 )lW<:?k public static void log(String sMsg) t71 0sWh{ { A&t}s
#3 System.err.println(sMsg); ,$G89jSM } #p[=iP 1`)R#$h 7"S|GEs: public static void log(int sMsg) p<J/J.E { Rn TPU` System.err.println(sMsg); |X_yL3`Zb } {<|0M%v } '<@ PgO~ 'uPqe.#? lOEbh /* <Z0Tz6/j, **TestMethod.java xAoozDj */ GN{.R7 package NetFox; T8RQM1D_s N
.SszZh Cvl"")ZZ` public class TestMethod { _mn4z+ &XZ>}^lD^ ciXAyT cG public TestMethod() ]w')~yk { ///xx/weblogic60b2_win.exe [}VEDx try{ "OWq]q# SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); F4:ssy^ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); WIbU^WJ0 SiteFileFetch fileFetch = new SiteFileFetch(bean); 3W27R fileFetch.start(); 1 8&^k| } LOOv8'%O8 catch(Exception e){e.printStackTrace ();} !u=[/> _-h3>.;h9 ,0])] } v0HFW%YJ^J Ig=4Z*au!g R!- RSkB public static void main(String[] args) ,iHl;3bu { T{ojla( new TestMethod(); mH8"k+k } }t-{,0 } DsP+#PX 点击下载更多相关资料
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