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/*
PaNeu1cO **SiteFileFetch.java DDWp4`CS| */ RFB(d=o5S package NetFox; +eC3?B8rN import java.io.*; @bE~@4mOu import java.net.*; #.o0mguU
|g+! loLKm]yV public class SiteFileFetch extends Thread { )}quw"H UP R/XQ /;7ID41 SiteInfoBean siteInfoBean = null; //文件信息Bean K0LbZMn,/ long[] nStartPos; //开始位置 kwOeHdV^ long[] nEndPos; //结束位置 x`#22"m FileSplitterFetch[] fileSplitterFetch; //子线程对象 4aA9\\hfGY long nFileLength; //文件长度 wz h.$?~ boolean bFirst = true; //是否第一次取文件 ~+=E"9Oo boolean bStop = false; //停止标志 v:?o3
S File tmpFile; //文件下载的临时信息 zx7#)* DataOutputStream output; //输出到文件的输出流 2p+C%"n> zPHy2H$28 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) MJA~jjy4 public SiteFileFetch(SiteInfoBean bean) throws IOException =D}4X1l { &/iFnYVhy siteInfoBean = bean; >2u y //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); %Sul4: D# tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); lAz2%s{6 if(tmpFile.exists ()) i0iez9B
{ Y|:YrZSC bFirst = false; V'C-'Ythwf read_nPos(); :SK<2<8h } Qne0kB5m else V!W1fb7V { (2d3jQN` nStartPos = new long[bean.getNSplitter()]; h mds(lv7 nEndPos = new long[bean.getNSplitter()]; Jl_~_Z } ZJ9x6|q Ox~ 9_d EDtCNqBS~2 VjY<\WqbS } _Ds@lVY SD^E7W$? $HxS:3D%D public void run() %EWq2'/5 { nGns}\!7' //获得文件长度 W"|mpxp //分割文件 l0:5q?g //实例FileSplitterFetch E0<)oQ0Xa> //启动FileSplitterFetch线程 )d:K:YXt //等待子线程返回 *Wso3 6an try{ l=xt;c! if(bFirst) aiJnfU]W { bs
BZE nFileLength = getFileSize(); |_, /u_ if(nFileLength == -1) YNk|+A.<d { *%I[ ke * System.err.println("File Length is not known!"); /LF3O~Go } dqxd3,Z else if(nFileLength == -2) [g`, AmR\! { ZL=N[XW4' System.err.println("File is not access!"); |Q5+l.% } 8""mp]o9 else DFc [z"[ { @iRO7 6m for(int i=0;i<nStartPos.length;i++) HitAc8 { @C=M
UT-! nStartPos = (long)(i*(nFileLength/nStartPos.length)); ewym1}o } |AC6sfA+ for(int i=0;i<nEndPos.length-1;i++) VGB-h' { VKNp,Lf nEndPos = nStartPos[i+1]; ~{P:sjsU } Je@k iE nEndPos[nEndPos.length-1] = nFileLength; Y1WHy*s? } =U
c$D* } C.(
yd$, f1J%]g! 'bPk'pj9 //启动子线程 r@yD8 D \ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; G5;V.#"Z[ for(int i=0;i<nStartPos.length;i++) S/fW/W*/} { .jargvAL* fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;NP[_2|-, siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \lW_f{X) nStartPos,nEndPos,i); 79wLT\& Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); vd(dNu&,< fileSplitterFetch.start(); n/ AW?' } p-Pz=Cx- // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), :3 y_mf> siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <sc\EK // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", [@|be.g nEndPos = " + nFileLength); "wINBya'M // fileSplitterFetch[nPos.length-1].start(); 5VKcV&D 9n 6fXOC jtCZfFD? //等待子线程结束 2( _=SfQ //int count = 0; Um\0i;7 ~4 //是否结束while循环 8YKQItK boolean breakWhile = false; (Q_2ODKo K$ AB} Fvc sf)W~Lx5a while(!bStop) yl/a:Q { R8 jovr write_nPos(); PQ3h\CL1n Utility.sleep(500); 1eD.:_t4 breakWhile = true; M(2`2-/xh C_Gzv'C"L {R8=}Qo for(int i=0;i<nStartPos.length;i++) fGTOIi@# { )x[HuIRaa if(!fileSplitterFetch.bDownOver) sOz sY7z3Z { I7zn>^0} breakWhile = false; SK-W%t break; SX_4=^ } o\goE^,aeR } 5r7h=[N if(breakWhile) H`el#tt_ break; anC+r(jjg9 W+hV9 M _ (2sq //count++; o%qkq K1 //if(count>4) ;{Jb6'K1h // siteStop(); GO~k ' } "lrA%~3%[P l;0y-m1 /< QSe System.err.println("文件下载结束!"); bjzx!OCpV } |7c`(. catch(Exception e){e.printStackTrace ();} tN2 W8d } "-0;#&! j|(:I: ] Vhph`[dC{ //获得文件长度 aS/`A public long getFileSize() IN_gF_@% { FUqt)YHi int nFileLength = -1; Xm@aYNV try{ &h(g$-l?[ URL url = new URL(siteInfoBean.getSSiteURL()); DY.58IHg1 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); s#P:6]Ar httpConnection.setRequestProperty("User-Agent","NetFox"); JJ-i_5\q km4g}~N</ <+q$XL0 int responseCode=httpConnection.getResponseCode(); U&Ab#m; if(responseCode>=400) *~;8N|4< { _lT0Hu processErrorCode(responseCode); R@n5AN( return -2; //-2 represent access is error Mpm#GdT } \O? u* > UWStzH< +nQ!4 String sHeader; }p{;^B +'%\Pr( 1Is%]6 for(int i=1;;i++) choL%g} { G#lg|# -# //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); X+at%L= //Utility.log(in.readLine()); }p*?1N sHeader=httpConnection.getHeaderFieldKey(i); <4f,G]UH_ if(sHeader!=null) *B{-uc3o { j+Zt.KXjT if(sHeader.equals("Content-Length")) >BJ}U_ck { EneAX&SG nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); MA6P"? break; [#Fg\2bq_y } @yKZRwg } r<|nwFJ else y||@?Y break; 0'@u!m? } g@u;Y5 } Tq#<Po $ catch(IOException e){e.printStackTrace ();} N7pt:G2~% catch(Exception e){e.printStackTrace ();} -|[~sj-p
,CKvTxz0 7E\gxQ(vU Utility.log(nFileLength); bpp* u~}%1 Lzz)n%y5 return nFileLength; waQtr,m) } ~p^7X2% ! $?$9y^\ @/(@/*+" //保存下载信息(文件指针位置) ppFYc\&= private void write_nPos() y\Dn^ { :x+ig5 try{ <m1sSghg output = new DataOutputStream(new FileOutputStream(tmpFile)); 045\i[l= output.writeInt(nStartPos.length); ymkR! for(int i=0;i<nStartPos.length;i++) J#(,0h { $}4K`Iu // output.writeLong(nPos); 5[<F_"x output.writeLong(fileSplitterFetch.nStartPos); W>:kq_gT output.writeLong(fileSplitterFetch.nEndPos); }$:#+
(17 } I%i:)6Un-y output.close(); j6og3.H- } QT;Va#a catch(IOException e){e.printStackTrace ();} 6l[G1KkV catch(Exception e){e.printStackTrace ();} 9FNwpL'C } Q"'V9m7
i ]>vf 9] C fSl
54 //读取保存的下载信息(文件指针位置) x<
S\D& private void read_nPos() 17i$8 { H/`G try{ C$K+=jT DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); T`Ro)ORC# int nCount = input.readInt(); (H1lqlVWV# nStartPos = new long[nCount]; sX5sL nEndPos = new long[nCount]; Yw[{beo for(int i=0;i<nStartPos.length;i++) "uhV|Lk*7 { phS>T nStartPos = input.readLong(); BkV(81"C nEndPos = input.readLong(); L~
2q1 } gY%&IHQ' input.close(); ;Z4o{(/zU } 4oN${7k0 catch(IOException e){e.printStackTrace ();} "Y(^F
bs catch(Exception e){e.printStackTrace ();} 48k7/w\ } ]?#
#))RUS `VXZ khm ^Xa*lR 3 private void processErrorCode(int nErrorCode) O%VA)< { $l#{_~
"m7 System.err.println("Error Code : " + nErrorCode); CpSK(2j } e{JVXc[D hb<k]-'! ArL-rJ{} //停止文件下载 fCr\u6Tb public void siteStop() /6jGt'^U { 6y9C@5p}B bStop = true; u?Z
<n: for(int i=0;i<nStartPos.length;i++) ?rQc<;b fileSplitterFetch.splitterStop(); /W0E(8:C) hv{87`L'K( z{' 6f@] } @`Wt4< } u{P~zyx //负责部分文件的抓取 /ISLVp%H **FileSplitterFetch.java hk.yR1Y| */ SXh?U,5u package NetFox; k{{hZ/om p_9g|B0D 5Edo%Hd6 import java.io.*; !3?yG import java.net.*; -_HRqw,Z0 h(|;\ ~ 5pmQp}}R public class FileSplitterFetch extends Thread { c(E,&{+E wsI5F&R, '{CWanTPi String sURL; //File URL `{<JC{yc? long nStartPos; //File Snippet Start Position [n!x&f8Xh long nEndPos; //File Snippet End Position M=6G:HHY int nThreadID; //Thread's ID jJc07r'] boolean bDownOver = false; //Downing is over e z+yP,.# boolean bStop = false; //Stop identical NFV_+{X\ FileAccessI fileAccessI = null; //File Access interface 3u4:l V pH|R ^X^,>Z| public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Y.X4*B { 1xIFvXru this.sURL = sURL; %!yxC this.nStartPos = nStart; s{B_N/^ this.nEndPos = nEnd; vU{jda$$# nThreadID = id; p&uCp7]U fileAccessI = new FileAccessI(sName,nStartPos);//定位 &8afl"_~ } T(gg>_'jh %:%MUdl6 j<@fT
ewZ public void run() BJ2Q 2WW { d9|T=R while(nStartPos < nEndPos && !bStop) ~Zu}M>-^c, { /0l-mfRr v?}pi @f%wd2 try{ wM0E%6
P URL url = new URL(sURL); aTX]+tBoe HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); t%:G|n Sz httpConnection.setRequestProperty("User-Agent","NetFox"); @~hz_Nm@8 String sProperty = "bytes="+nStartPos+"-"; gLV^Z6eE httpConnection.setRequestProperty("RANGE",sProperty); LjCykk Utility.log(sProperty); <0>[c<{V< {n6\g]p3 m3B\)2B InputStream input = httpConnection.getInputStream(); h)P]gT0f/ //logResponseHead(httpConnection); a 1NCVZ ze
?CoDx2 rCkYfTYI byte[] b = new byte[1024]; p[b7E`7 int nRead; T*8_FR < while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) m qpd { uZ-`fcCjD nStartPos += fileAccessI.write(b,0,nRead); r.9 $y/5 //if(nThreadID == 1) \1~I04'= // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); $=lJG(2% } zQn//7#-G Ae.]F)w_\ tfsh!)u? Utility.log("Thread " + nThreadID + " is over!"); s
8Jj6V bDownOver = true; rrYp'L //nPos = fileAccessI.write (b,0,nRead); VSx%8IM+X } ~ J %m catch(Exception e){e.printStackTrace ();} #c:9V2 } b6]e4DL:R } )S#j.8P'B +H[Q~P8'[
-GK 'V //打印回应的头信息 8dlInms public void logResponseHead(HttpURLConnection con) > e;]mU`, { aam1tm#Q for(int i=1;;i++) q;KshpfRMD { ?F9hDLX String header=con.getHeaderFieldKey(i); rpx0|{m if(header!=null) juR //responseHeaders.put(header,httpConnection.getHeaderField(header)); HuK Aj Utility.log(header+" : "+con.getHeaderField(header)); BSjbnnW}" else P&h/IBA_ break; ~T;K-9R } )ynA:LXx } zo/0b/lQ Q.*'H_Y s8{-c^G:R public void splitterStop() 38<~R { AUu5g bStop = true; OCvml 2
vP } N"&$b_u[ ZWov_ anpJAB:1 } B#;s(O ,o4r,.3[s r*c82}tc /* 9UB??049z **FileAccess.java sb8z_3 *//文件访问(定位,写) S.qk%NTTD package NetFox; wVlSjk import java.io.*; F]hx 2LtU;}7s =ZFcxGo public class FileAccessI implements Serializable{ ](]*]a4ss yLV2>kq //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 []^PJ RandomAccessFile oSavedFile; yp( ?1 long nPos; k];L!Fj1 'O!Z:-qE .LWOM8) public FileAccessI() throws IOException |^
2rtI { vcaBL<io this("",0); -lnTYxo+]^ } !pG+Ak? *2w_oKE'+5 8L%%eM_O public FileAccessI(String sName,long nPos) throws IOException f0:EQYYZ { #nxER oSavedFile = new RandomAccessFile(sName,"rw"); WHZe)|n this.nPos = nPos; p,3go[9X:R oSavedFile.seek(nPos); *>?):-9"6N } B:.;,@r] ;5,`Jpca ?{y:s!! public synchronized int write(byte[] b,int nStart,int nLen) xc:`}4 { 9_g>BI;"8 int n = -1; azz#@f1 try{ FKDamHL< oSavedFile.write(b,nStart,nLen); 48R]\B<R{ n = nLen; O('i*o4!} } !gD 3CA catch(IOException e) b(+w.R(+Ti {
w0q?\qEX e.printStackTrace (); ?,A}E|jZ } @5<]W+jk4 O>)n*OsS Pu/-Qpqh return n; ~(Ih~/5\^ } FZeN, c,g]0S?gu b/a?\0^ } ;EE{~ + MOe{:/6 I;bg?RsF /* w>/pQ6=OFR **SiteInfoBean.java ?15POY ?Z */ $9j>VGf= package NetFox; ~Q.8 U3" o O{|C&A %XDip]+rb public class SiteInfoBean { XL"v21X "-~D!{rS iXr`0V private String sSiteURL; //Site's URL 2@=cqD7x private String sFilePath; //Saved File's Path %^Q@*+{:f private String sFileName; //Saved File's Name 3:02`;3 private int nSplitter; //Count of Splited Downloading File GlV-}5W pw(U< ) ]$XBd{\D{ public SiteInfoBean() A{{q'zb! {//nSplitter的缺省值为5 )cv0$ //default value of nSplitter is 5 'Wx\"]: this("","","",5); \\E_W9.u } |}]JWsuB )Rm
'YmO {Q#Fen
;y| public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) eEg1- { D>"{H7mY sSiteURL= sURL; Wq[=}qh~ sFilePath = sPath; r(?'Y y sFileName = sName; Wf+Cc?/4 this.nSplitter = nSpiltter; g-{<v4 NGI 4cVs(`g^ 7E\K!v_ } D x>1y T9XW%/n /pSUn"3 public String getSSiteURL() )N%1%bg^- { !4b;>y=m return sSiteURL; TS~Y\Cp } k:+)$[t7 &EbD.>Ci qMW%$L\HA public void setSSiteURL(String value) ^8f|clw" { c?V*X- sSiteURL = value; ]y)R C-N } 9L)&n.t1
[M8qU$&?] FRJ:ym=E public String getSFilePath() @88z{ { 4Q`=t&u return sFilePath; 2gC&R1H } U d=gdsL "k_n+cH% Mh-*5Rx public void setSFilePath(String value) B3g82dm { 6{Cu~G{]N sFilePath = value; 9B?t3: } w7*b}D@65\ tr9_bl&z *nUpO] public String getSFileName() e$xv[9 { 8ZDqqz^C0 return sFileName; bTy'5" } G+QNg.pH 6UzT]" LR; >Wr public void setSFileName(String value) pb2{J# { UV
*tO15i sFileName = value; P20]>Hg } nm:let7GB {p lmFV [:hy public int getNSplitter()
+<9q]V { )(|0KarF return nSplitter; g ]PLW3 } 5 1CU@1Ie $X<<JnsK @,>=X:7 public void setNSplitter(int nCount) p TV@nP { "<n"A7e nSplitter = nCount; |uBot#K| } :+dWJNY: } J ]l@ r *a0I Z `S~@ FX /* 5z(>4 d! **Utility.java c7TWAG_+ */ p7=^m>Z6 package NetFox; }AH|~3|D (.nJT"& 4kY{X%9 public class Utility { YT%SCaU 4[V6so 0 CO)b'V, public Utility() U%PMV?L{ {
E#X!*q& s:Ql](/B# vJjj+: } F]&J%i
F[ ;KZ2L~
THG //线程睡眠 @Q1F#IU public static void sleep(int nSecond) d8q$&(]< { XJ1nhE try{ rM~IF+f0XD Thread.sleep(nSecond); )yH#*~X_ } D~ `YRbv catch(Exception e) UmI@":|- { sbiDnRf e.printStackTrace (); ~x^+OXf!^g } cZK?kz_Y } WxP4{T* < AJ1$$c //日志 u'n%BVt
public static void log(String sMsg) C00*X[p { {ZYCnS&?CL System.err.println(sMsg); :V1ZeNw } 0c;"bA0>Sx H&Lbdu~E zm S-s\$, public static void log(int sMsg) *oJ>4S { $MEbePxe System.err.println(sMsg); ['YRY B } |0pBBDw } OZ]3OL, (8X8<>w~ #Q)w$WR /* 7Sv5fLu2 **TestMethod.java 8o5^H> */ yaGVY*M0 package NetFox; 7Qztc?XK L=Jk"qWV0 (C[S?@S public class TestMethod { (#Kvm G u I sM J3JRWy@?P public TestMethod() Q-%=ZW Z { ///xx/weblogic60b2_win.exe 'eXw`kw( try{ k
<Sa< SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); MZF ;k$R //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); !g:G{b SiteFileFetch fileFetch = new SiteFileFetch(bean); IIEU{},}z fileFetch.start(); rca"q[, } [GT1,(}.
Z catch(Exception e){e.printStackTrace ();} 5DBd
[u3 WC&Ltw8 e ^&8x } Z#V\[ 0#nXxkw Y##P9^zH1 public static void main(String[] args) *iN]#)3> { @8d})X33 new TestMethod(); _C#()# } ?S7:KnU>K } qq{N; C 点击下载更多相关资料
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