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/* 4c0 =\v **SiteFileFetch.java clyZD`* */ $MhfGMk!' package NetFox; O4t0 VL$ import java.io.*; K+|G9 import java.net.*; lsq\CavbM L.X"wIs^ wNMf-~ public class SiteFileFetch extends Thread { Qa>t$`o` 21_sg f? [&eG>zF" SiteInfoBean siteInfoBean = null; //文件信息Bean POB6#x long[] nStartPos; //开始位置 bS7%%8C long[] nEndPos; //结束位置 @?e+;Sx FileSplitterFetch[] fileSplitterFetch; //子线程对象 QN)EPS:y long nFileLength; //文件长度 Q!.JV.( boolean bFirst = true; //是否第一次取文件 xU9T8Lw boolean bStop = false; //停止标志 5d|hP4fEc File tmpFile; //文件下载的临时信息 <aSjK# DataOutputStream output; //输出到文件的输出流 1K\zamBg upi\pXv //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) As"%
u public SiteFileFetch(SiteInfoBean bean) throws IOException VYG o; { 4fSGc8 siteInfoBean = bean; o@2Y98~Q} //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); \8Y62 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); &uP,w# if(tmpFile.exists ()) eU(cn8/} { 7G':h0i8 bFirst = false; %/.yGAPkx read_nPos();
|pgrR7G' } vX30Ijm else tqk^)c4FF( { *E.uqu>I nStartPos = new long[bean.getNSplitter()]; tw
k nEndPos = new long[bean.getNSplitter()]; b=+3/-d } T$!Pkdh BMi5F?Q'G 5LaF'>1yY xlIVLv6dO } dj-/%MU *jC Hv _D"V^4^yqu public void run() tXfXuHa { JIatRc?g //获得文件长度 !(A< //分割文件 gkhmQd //实例FileSplitterFetch Fe L !%z //启动FileSplitterFetch线程 ?uh%WN6nU] //等待子线程返回 `}.jH1Fx/m try{ adY ,Nz if(bFirst) R+r;V ]-/ { {&TP&_|H nFileLength = getFileSize(); bUU\bc if(nFileLength == -1) br;~}GR_h { }y>/#]X System.err.println("File Length is not known!"); yU|=)p5 } y3@m1>]09 else if(nFileLength == -2) O%s7 }bR3 { z?<Xx?Kk System.err.println("File is not access!"); a! gj_ } >c)-o}bd^ else ^UmhSxQ## { Qa#Em1co for(int i=0;i<nStartPos.length;i++) ^Ycn&`s { v`&>m' nStartPos = (long)(i*(nFileLength/nStartPos.length)); ] kdU]}z } +OaBA>Jh9 for(int i=0;i<nEndPos.length-1;i++) ak_n { *JArR1J nEndPos = nStartPos[i+1]; 1EMrXnv, } cC pNF `DN nEndPos[nEndPos.length-1] = nFileLength; h^v+d*R
N } E3V_qT8 } ^6@6BYf) ;iA$yw: m^$KDrkD //启动子线程 K |^OnM fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; p'4ZcCW?f for(int i=0;i<nStartPos.length;i++) |-9##0H { 9}T(m(WQVu fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), *RD<*l siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ~--b#o{ nStartPos,nEndPos,i); 6
m%/3>q Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); /"@k_[O fileSplitterFetch.start(); 9]gV#uF } #X"fm1 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), m$`4.>J siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); .R^q$U~v3 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", t=IM"ZgfL nEndPos = " + nFileLength); 0ZJrK\K; // fileSplitterFetch[nPos.length-1].start(); th|'t}bWV &[t} /+) )1/J5DI @8 //等待子线程结束 _};T:GOT //int count = 0; jwp?eL!7 //是否结束while循环 Bq~?!~\?. boolean breakWhile = false; CqLAtS X7 awgS5We| _iH:>2p 5R while(!bStop) =>*9"k%m { LG
vPy write_nPos(); *5mJA -[B+ Utility.sleep(500); T5eJIc3a" breakWhile = true; H,(4a2zx LHMA-0$ ?) u}-)ywX for(int i=0;i<nStartPos.length;i++) U]Fnf?( { Va$JfWef if(!fileSplitterFetch.bDownOver) <z QUa { "y-/ 9C breakWhile = false; ]RuH6d2d| break; NchEay;` } PEMuIYm$ } T,uJO< if(breakWhile) ]t-B-(D break; 72\o6{BiC & &:ZY4` 7&2CLh //count++; /h ,-J 8[ //if(count>4) k&= iye( // siteStop(); qf*e2"~v } (,['6k< b?:SCUI FTh/1"a System.err.println("文件下载结束!"); /t04}+,e^ } YR.f`-<Z catch(Exception e){e.printStackTrace ();} Mb+CtI_' } uDMyO<\ SJO^.[ pAH9 //获得文件长度 @rlL'|&X* public long getFileSize() \GCT3$ { i%otvDn1 int nFileLength = -1; J%P{/ nR
try{ |#5_VEG URL url = new URL(siteInfoBean.getSSiteURL()); ?m h0^G HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); M5{vYk>,1Q httpConnection.setRequestProperty("User-Agent","NetFox"); SXRND;-W8 wV"C ,*V 71G00@&w9D int responseCode=httpConnection.getResponseCode(); +~?K@n if(responseCode>=400) 0E`6g6xMS { GD<pqm`vVY processErrorCode(responseCode); *h~(LH"tN return -2; //-2 represent access is error yHxi^D] } @l?2", 3&Fqd pJ_>^i= String sHeader; Cgn@@P5ZC oI9-jW 1A{iUddR for(int i=1;;i++) QW>(LG G= {
C44*qiG. //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ^ =RSoR //Utility.log(in.readLine()); O;RNmiVoq sHeader=httpConnection.getHeaderFieldKey(i); '?b.t2 if(sHeader!=null) 8zH/a
{ g&L $5 if(sHeader.equals("Content-Length")) }\d3 { $F~hL?"? nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); UY&DXIP M break; (=w ff5U } 0@2pw2{Ru } hJ0m;j&4y else Yd$64d7,h break; N0fXO } nXxSv~r } 5h>t4 [~ catch(IOException e){e.printStackTrace ();} /[Sy;wn catch(Exception e){e.printStackTrace ();} vQL)I #mbl4a !'
jXN82 Utility.log(nFileLength); ybVdWOqv k?'PCV bn8?- return nFileLength; {#%;Hq P } }$1Aw%p^ Gq^#.o] ai~JY[ //保存下载信息(文件指针位置) }NETiJ"6 private void write_nPos() 8A|i$#.& { 2s8(r8 AI try{ 0%5x&vx'S output = new DataOutputStream(new FileOutputStream(tmpFile)); z,/y2H2 output.writeInt(nStartPos.length); M^~ for(int i=0;i<nStartPos.length;i++) gb@ |\n { My\ // output.writeLong(nPos); V39)[FH} output.writeLong(fileSplitterFetch.nStartPos); >jBnNA@ output.writeLong(fileSplitterFetch.nEndPos); o!M*cyq } AZadNuL/ output.close(); ^p!bteA> } s*W)BK|+? catch(IOException e){e.printStackTrace ();} w\3'wD! catch(Exception e){e.printStackTrace ();} 7`6JK } Id'@!U:NA ti9cfv> &)|3OJ'o //读取保存的下载信息(文件指针位置) [8C6%n{W private void read_nPos() &-6D'@ { k0R;1lZ0n try{ |A@Gch fd DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); =v]eQIp int nCount = input.readInt(); 3a#j&] nStartPos = new long[nCount]; 9@|X~z5E nEndPos = new long[nCount]; b3!,r\9V for(int i=0;i<nStartPos.length;i++) 9 ulr6 { fO{E65uA nStartPos = input.readLong(); _G5MQ%z nEndPos = input.readLong(); yy-\$<j } +qEvz<kch input.close(); aXefi'!6 } QZ54Osdl catch(IOException e){e.printStackTrace ();} "RJf2~(ZX catch(Exception e){e.printStackTrace ();} ))>)qav } xj!_]XJ^w dSBW&-p Ctxx.MM private void processErrorCode(int nErrorCode) c~UYs\ { _;+N=/l0 System.err.println("Error Code : " + nErrorCode); $0K%H } 0IEFCDeCO 1f1J'du <U$A_]*w //停止文件下载 #Rdq^TGMi; public void siteStop() weiqt
*,8 { _"`U.!3* bStop = true; __V6TDehJ$ for(int i=0;i<nStartPos.length;i++) x 1"ikp} fileSplitterFetch.splitterStop(); =pS\gLQu 4GRmo"S Y">;2Pt; } *ad"3> } &p$SFH?s //负责部分文件的抓取 t9()?6H\ **FileSplitterFetch.java B$ )6X */ -zVa[& package NetFox; -ijQTB X+K$y:UZ Tl3{)(ezx import java.io.*; b_ | import java.net.*; /-39od0 8EPV\M1% ft[g1 public class FileSplitterFetch extends Thread { %?EOD=e= *<! W k\ e+F5FAMR68 String sURL; //File URL #={L!"3?e long nStartPos; //File Snippet Start Position SS;QPWRZ long nEndPos; //File Snippet End Position FBcF int nThreadID; //Thread's ID yX(6C]D boolean bDownOver = false; //Downing is over n]@+<TA<uA boolean bStop = false; //Stop identical <nj[=C4v FileAccessI fileAccessI = null; //File Access interface v=|BqG` k852M^JP soZw""|v public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException QWf)5S { Rh%/xG#k this.sURL = sURL; aM9St!i this.nStartPos = nStart; _|Ml6;1aZ this.nEndPos = nEnd; `B6{y9J6 nThreadID = id; r Q'tab.,] fileAccessI = new FileAccessI(sName,nStartPos);//定位 G1~|$X@@ } k[Iwxl;/ fwRlqfi L/GM~*Xp(O public void run() D.<CkDB { &hba{!`y while(nStartPos < nEndPos && !bStop) >{4pEy { 5e,Dk0d 8y!fqXm%) N)h>Ie try{ .VmI4V?}h URL url = new URL(sURL); ZjEO$ts=@ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Md
{,@ G httpConnection.setRequestProperty("User-Agent","NetFox"); G6eC.vU]j String sProperty = "bytes="+nStartPos+"-"; xM;gF2 httpConnection.setRequestProperty("RANGE",sProperty);
jl2nRo Utility.log(sProperty); )
ZOmv ZZE q'2PG@ InputStream input = httpConnection.getInputStream(); g#_?Vxt //logResponseHead(httpConnection); u6y\ GsM.a 5!Z+2Cu] _:'m/K3Ee byte[] b = new byte[1024]; ?/)5U}*M0T int nRead; =O)JPo&iwY while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) MZw%s(lv { G"TPu_g nStartPos += fileAccessI.write(b,0,nRead); 6DJ,/J2F //if(nThreadID == 1) :<&}/r // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); DcbL$9UI } <'~8mV1 vtmO Mn~A;=%qF Utility.log("Thread " + nThreadID + " is over!"); !nj%n bDownOver = true; 0v0Y(
Mo@ //nPos = fileAccessI.write (b,0,nRead); vEzzdDwi6 } 2c%}p0<;|? catch(Exception e){e.printStackTrace ();} ,0 &lag } :/%Vpdd@ } ^MJGY,r6b h;4g#|, |7`Vw Z //打印回应的头信息 4&ea*w public void logResponseHead(HttpURLConnection con) k #*|-? { &OhKx for(int i=1;;i++)
o@LjSQ5! { qqzQKN String header=con.getHeaderFieldKey(i); t48(GKF if(header!=null) {C]M]b*F6( //responseHeaders.put(header,httpConnection.getHeaderField(header)); iW"L!t#\| Utility.log(header+" : "+con.getHeaderField(header)); 1wc
-v@E else +zs6$OI]V break; FYcMvY } ZVp\5V* } &{]%=stI @su{Uno8/ z}bnw2d] public void splitterStop() Xb^\{s?b { >>$IHz4Z" bStop = true; RaU.yCYyu } dWqFP Ix"c<1I cZ!s/^o?f } Yn<0D|S;X uAjGR t^CT^z /* o~-X7)] **FileAccess.java Q5,@P? *//文件访问(定位,写) 4G>|It package NetFox; =(n'#mV import java.io.*; 3K?0PRg mzT} C&hfP 9uS7G * public class FileAccessI implements Serializable{ K%pmE?%,8 #dpt= //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 <,E*,&0W RandomAccessFile oSavedFile; /2@%:b) long nPos; 0X0D8H(7Q 4|$D.`Wu 0[1!K&(L public FileAccessI() throws IOException 3-mw-;. { +1)C&: this("",0); `C*!de]Y% } <Y orQ> 44W3U~1 -8tA~;p public FileAccessI(String sName,long nPos) throws IOException T?\CAk> { Rm*}<JN31 oSavedFile = new RandomAccessFile(sName,"rw"); y2 +a2 this.nPos = nPos; =O;SXzgE oSavedFile.seek(nPos); @l(Y6m|v\ } jYy0^)6X( 4iLU "~ iO!lG public synchronized int write(byte[] b,int nStart,int nLen) R&4E7wrdP { ]~qN<x int n = -1; Vd?v"2S(9 try{ m_(hCY=Q$ oSavedFile.write(b,nStart,nLen); q~^:S~q n = nLen;
yX-xVvlv@ } 13QCM0# catch(IOException e) ^z^>]Qd { +
kF[Oh# e.printStackTrace (); P+b^;+\1s } %b{!9-n} ^ Wl/ c}QJ-I return n; aqM_t } Q
jBCkx]g Yjl0Pz.q vv0zUvmT } t3GK{X 1}BNG ,n T8441qo{> /* <dN=d3S
**SiteInfoBean.java iCK$ o_`? */ +zD'r5 package NetFox; x5|v#
-F ^ A$F;fCV* ^97ZH)Ww public class SiteInfoBean { \Zv =?\ .]e6TFsrO btF%}<o) private String sSiteURL; //Site's URL _Y|kX2l
S@ private String sFilePath; //Saved File's Path j?,*fp8 private String sFileName; //Saved File's Name u W|x)g11a private int nSplitter; //Count of Splited Downloading File 7[H`;l YxtkI:C? ? g{,MP5 public SiteInfoBean() cP2R24th {//nSplitter的缺省值为5 &JlR70gdHi //default value of nSplitter is 5 d*>k
]X@G this("","","",5); JKT+ q*V } ,j nRt%W 3kQ ^f=Wd ^d9raYE`' public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) gk z#kiGF { c_q+_$t sSiteURL= sURL; 0X?fDz}jd sFilePath = sPath; ~yi&wbTjM sFileName = sName; \!QF9dP4 this.nSplitter = nSpiltter; =Yj[MVn z{g<y^Im+E I7PWOd } 9AYe,R @c!67Z L%d?eHF public String getSSiteURL() 12PE{Mut { v,+l xY return sSiteURL; h<K;VpL6 } JYr7;n'! SU'1#$69F YhT1P fl public void setSSiteURL(String value) nh=Us^xD { VQ?H:1R sSiteURL = value; x#0@$ } 9(F?|bfk LQ@|M.$A 02^(z6K'&? public String getSFilePath() qX'a&~s)n { R$fIb}PDr return sFilePath; T+nC>}*jgJ } (bt]GAxb1 'h^DI` $JB:rozE public void setSFilePath(String value) C5 5n { Kg`x9._2 sFilePath = value; ]0i2]=J&, } (1,#=e+ IA`8ie+ c'+r[rSn1 public String getSFileName() ;]M67ma7C { ba9<(0` return sFileName; 1ysLZ;K } gqD^Bs'VF JGDUCb~ YaZt+WA public void setSFileName(String value) |~uzQU7 { W:poUG1UR sFileName = value; !(_xu{(DL } K2rS[Kdfaq 9H}iX0O ~}0hN]*G public int getNSplitter() K^vp(2 { -mHhB(Td' return nSplitter; z{3%Hq } /Tf*d>Yh; 0*;9CH=BE DVoV:pk public void setNSplitter(int nCount) q&$0i { 3d'ikkXK nSplitter = nCount; y [9}[NMZ } 06@0r } To8v#.i wt.{Fqm M}oj!xGB /* lMzCDx!m **Utility.java N"x\YHp */ =@KY A(D package NetFox; ?*R^?[ ?3TK7]1V: p@8^gc public class Utility { KO]?>>5S6 FV6he[, tbzvO<~ public Utility() q\b
?o!#_ { YeExjC ua|Z`qUyq l&sO?P[ / } Xf_tj:eO~ ~sHZh //线程睡眠 &]yJCzo] public static void sleep(int nSecond) %M)oHX1p { 9poEUjBI try{ wz0$g4 Thread.sleep(nSecond); ?tC}M;~ } g.Caapy catch(Exception e) h,'mN\6t { V0'p1J tD e.printStackTrace (); .FbZVY c] } 8X
?GY8W: } KYRm
Ui# ,Z*3,/a //日志 @2~O^5[> public static void log(String sMsg) 0o=6A<#x { K]pKe"M System.err.println(sMsg); y|+~>'^JR } p]V-< R#7+ &X]=Qpl public static void log(int sMsg) ptWG@"j/b { BtpjQNN System.err.println(sMsg); x:n9dm }
TCKI } 2.Eu+*UC >.O*gv/_ ok>P [
&! /* `m@] **TestMethod.java #1jtprc */ SCh7O} package NetFox; a._^E/EV %$Jqt V:(w\'wm public class TestMethod { 8`inRfpY cdJ`Gk ]EVe@ public TestMethod() ^!o1l-Y^gr { ///xx/weblogic60b2_win.exe !7kLFW try{ H81.p SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); PX69 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); RlslF9f SiteFileFetch fileFetch = new SiteFileFetch(bean); @!&Jgg53G fileFetch.start(); Y( V3PnH } LG Y!j_bD catch(Exception e){e.printStackTrace ();} _8x'GK
tU ;vI*ThzdD |auX*hb9 } 1O]5/Eu f1CMR4D hP4)8 > public static void main(String[] args) rAlh&
?X { i!.I;@ new TestMethod(); Wlr&g
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