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/*
_JpTHpqu **SiteFileFetch.java mtFC H */ ?aaYka] package NetFox; ]S(nA!] import java.io.*; MYJDfI import java.net.*; hHEn \o,et9zDJ3 R90chl public class SiteFileFetch extends Thread {
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3o 1N]-WCxQ SiteInfoBean siteInfoBean = null; //文件信息Bean \HoVS long[] nStartPos; //开始位置 ~EDO< O>3 long[] nEndPos; //结束位置 `aMnTF5: FileSplitterFetch[] fileSplitterFetch; //子线程对象 9@h-q(-
long nFileLength; //文件长度 V?MaI.gj boolean bFirst = true; //是否第一次取文件 0^P9)<k' boolean bStop = false; //停止标志 A@.ruG$ File tmpFile; //文件下载的临时信息 ?)qm=mebY DataOutputStream output; //输出到文件的输出流 t P'._0n0 *Q-uE //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) H5FWk public SiteFileFetch(SiteInfoBean bean) throws IOException S2I{?y&K { >r:z`^p siteInfoBean = bean; o9D#d\G //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); nm|"9|/
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); IQ#Kod;) if(tmpFile.exists ()) 5?#AS#TD' { .Pe^u%J6F bFirst = false; `sdbo](76 read_nPos(); U z)G Y } U&+lw= else FGMYpapc~ {
#s=\ nStartPos = new long[bean.getNSplitter()]; wXeJjE%j:3 nEndPos = new long[bean.getNSplitter()]; =6'D/| 3 } $xcU*?=K %E":Wv ac43d`wpK dm83YCdL } @`sZV8 z[+pN:47 *q1sM#;5 public void run() KH$o X\v { d$D3iv^hyx //获得文件长度 OYfP!,+bn //分割文件 ui*CA^ Y //实例FileSplitterFetch Ag]Hk% //启动FileSplitterFetch线程 yle~hL //等待子线程返回 v Dph}Z try{ bsWDjV~ if(bFirst) n
QOLR?% { M)nf(jw#G nFileLength = getFileSize(); IrP6Rxh if(nFileLength == -1) 44h z, { Z+;670Z System.err.println("File Length is not known!"); V,3$>4x } 1B`0.M'd else if(nFileLength == -2) O;;vz+ j { ^@q$c System.err.println("File is not access!"); V/DdV}n! } `ucr;P else `{@?O%UB { TSd;L
u%hr for(int i=0;i<nStartPos.length;i++) !B*d,_9c { :B_ itl0{e nStartPos = (long)(i*(nFileLength/nStartPos.length)); 'l'[U } (Bfy
for(int i=0;i<nEndPos.length-1;i++) ""F'Nzy { X@7e7 nEndPos = nStartPos[i+1]; @ GzN0yXhR } /I'
np nEndPos[nEndPos.length-1] = nFileLength; *j|BSd
P } 8:UV; 5@ } _i&awm/U cM+s)4TPL d,).O //启动子线程 R$40cW3` fileSplitterFetch = new FileSplitterFetch[nStartPos.length];
^pZ\: for(int i=0;i<nStartPos.length;i++) D\GP+Ota { !bD`2m[Q fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^,Y#_$oR siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \Mod4tQ nStartPos,nEndPos,i); y>m=A41:g Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos);
XS"lR | fileSplitterFetch.start(); 9Lxa?Y1 } 9k!#5_ M // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), KbF,jm5 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 9/S-=VOe.t // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", U_c9T> = nEndPos = " + nFileLength); s@bo df& // fileSplitterFetch[nPos.length-1].start(); A&QO]8 1=%\4\ mH} 1Zy //等待子线程结束 VFwp .1oa! //int count = 0; 6tmn1: //是否结束while循环 > jvi7 boolean breakWhile = false; '=vD!6=0@ ng[ZM); 'Sjcm@ILm while(!bStop) k@ZmI^ { cw{[% 7 write_nPos(); $q;dsW,8 Utility.sleep(500); O>`DR0 breakWhile = true; m-No 8)2yA 7[W!Nx "S@%d(lg for(int i=0;i<nStartPos.length;i++) B?J#NFUb { y"SVZ} ;| if(!fileSplitterFetch.bDownOver) h"G#} C] { sIh,@b breakWhile = false; +V6N/{^5 break; $n?@zd@53 } LHz-/0[ } gaw/3@ if(breakWhile) }@:vq8%Q break; _(s|@UT# @{!c [{x,T 'Nv*ePz //count++; Ey!+rq} //if(count>4) k:0HsN!F9 // siteStop(); *L.+w-g&& } BHw/~H d4 Ju#t^P H:BWv08~5 System.err.println("文件下载结束!"); A/EW57v" } rOu7r 4 catch(Exception e){e.printStackTrace ();} bytAdS$3 } SXA_P{j&a e03q9( /"$;3n~ //获得文件长度 r4h4A w { public long getFileSize() KfsU RTZ { ga~C?H,K int nFileLength = -1; }?=$?3W try{
.* xaI+: URL url = new URL(siteInfoBean.getSSiteURL()); -&*
4~ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); OXuBtW*,z+ httpConnection.setRequestProperty("User-Agent","NetFox"); q8{)27f, o'Byuct _f u?, int responseCode=httpConnection.getResponseCode(); 2\M^_x$N if(responseCode>=400) aoh"<I%]>4 { ;|f|d?Q\ processErrorCode(responseCode); \ueo^p]_? return -2; //-2 represent access is error pAo5c4y!4 } E1'HdOh&z j ,'$i[F' Eh)PZvH String sHeader; |Psi?'4 c1?_L( )8:Ltn% for(int i=1;;i++) Re{vO&. { {]/}3t //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); %(,Kj
~0 //Utility.log(in.readLine()); ?6F\cl0. sHeader=httpConnection.getHeaderFieldKey(i); _>8ZL)NQQ if(sHeader!=null) W4Ey]y" { c-L1 Bkw if(sHeader.equals("Content-Length")) B6&;nU>; { %EuJ~;x(Mg nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Quy&CV{@ break; |Fk>NX } +wU9d8W } xG JX~) else dMw0Aw,2]8 break; F/FUKXxx } 0HA` } eot]VO: catch(IOException e){e.printStackTrace ();} oz(V a! catch(Exception e){e.printStackTrace ();} ab5 a>w6} XjL)WgQ{i ~.?,*q7 Utility.log(nFileLength); 60B6~@]P IvFxI#.ju l&@]
return nFileLength; [=[>1<L> } 59;p| ]Z?y\L*M- ~ [k0ay //保存下载信息(文件指针位置) wJs#rkW private void write_nPos() nm)H\i { 8X,dVX5LT try{ 1&JPyW output = new DataOutputStream(new FileOutputStream(tmpFile)); eM";P/XaX output.writeInt(nStartPos.length); #)&kF+ for(int i=0;i<nStartPos.length;i++) mhZ{}~ { 9?5'>WO // output.writeLong(nPos); &eL02:[ output.writeLong(fileSplitterFetch.nStartPos); $9!2c / output.writeLong(fileSplitterFetch.nEndPos); ^Oy97Y } ?/Bp8q( output.close(); )N4!zuSVf } A}Q6DHh26 catch(IOException e){e.printStackTrace ();} c]SXcA;Pmv catch(Exception e){e.printStackTrace ();} z>rl7&[@ } v]UT1d=_T *E*=
;BG &\8qN_` //读取保存的下载信息(文件指针位置) _Mi`]VSq9 private void read_nPos() x3j)'`=15 { J:<mq5[ try{ eD4D<\* DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ws1io. int nCount = input.readInt(); !6Sr*a*5 nStartPos = new long[nCount]; ;L1Q"Hxh nEndPos = new long[nCount]; |$*1!pL-QP for(int i=0;i<nStartPos.length;i++) or~2r8 { LhN?j5XqM nStartPos = input.readLong(); 3q'["SS nEndPos = input.readLong(); 0_F6t- } b.mcP@ input.close(); Ass : } 6#[ catch(IOException e){e.printStackTrace ();} ]S@zhQ catch(Exception e){e.printStackTrace ();} zSy^vM;6zf } BvQMq5& 1b^e4 &PQhJ#YG private void processErrorCode(int nErrorCode) S$~T8_m^U { 0 &M~lJ System.err.println("Error Code : " + nErrorCode); =<yMB d\ } ~s3X&!# -|K^!G
Iw)}YZmn //停止文件下载 ;a"g<v public void siteStop() Yatd$`,hW { b 6kDkE bStop = true; s7(NFX5 for(int i=0;i<nStartPos.length;i++) \wMqVRPoQ fileSplitterFetch.splitterStop(); j<"@Y7 /e/%mo k
P]' } _}bs0 kIz } I+08tXO //负责部分文件的抓取 pco:]3BF6 **FileSplitterFetch.java 5;WESk */ B* 0TM+
package NetFox; Y-yozt #mT\B[4h l k~VvRq import java.io.*; &>nB@SQZ import java.net.*; |ry![\ O`?qnNmc; (,nQ7,2EX public class FileSplitterFetch extends Thread { )RUx ` nd/N# Qy4eDv5 String sURL; //File URL eELLnU{" long nStartPos; //File Snippet Start Position d-X6yRjnj long nEndPos; //File Snippet End Position 4d x4hBd int nThreadID; //Thread's ID nXU`^<nA boolean bDownOver = false; //Downing is over u[:-^H boolean bStop = false; //Stop identical `T'[H/ FileAccessI fileAccessI = null; //File Access interface t=l@(%O 0_ _ *l+ze[a >Hr&F
nh+ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ~ 3!yd0[k { @\*`rl] this.sURL = sURL; .ZOG,h+8 this.nStartPos = nStart; WswM5RN this.nEndPos = nEnd; Y0z)5),[U: nThreadID = id; 8SZZ_tS3r fileAccessI = new FileAccessI(sName,nStartPos);//定位 plNoI1st } 8}M-b6RV MnLo{G] fA$2jbGW public void run() ltWEA { 3<XP/c"; while(nStartPos < nEndPos && !bStop) b6%[?k { vRhI:E)So# eoj(zY3 D6I-:{ws try{ m| uVmg!* URL url = new URL(sURL); FOyANN' HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); wC>}9OM httpConnection.setRequestProperty("User-Agent","NetFox"); 7v']wA r] String sProperty = "bytes="+nStartPos+"-"; 7|@FN7]5NF httpConnection.setRequestProperty("RANGE",sProperty); K' ?`'7 Utility.log(sProperty); dz6&TdEl W{$J)iQ `w8Ejm?n InputStream input = httpConnection.getInputStream(); G1
K@Ir< //logResponseHead(httpConnection); a
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YD T^ )\ m$.7) 24 byte[] b = new byte[1024]; .DR*MQI9 int nRead; d53Eu`QW? while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) w#d7 { A3Xfu$[u nStartPos += fileAccessI.write(b,0,nRead); <B
Vx% //if(nThreadID == 1) :R'={0Jg // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2^X<n{0N) } \b;z$P\+* qV#,]mX (VM.]B< Utility.log("Thread " + nThreadID + " is over!"); G_QV'zQ bDownOver = true; 6ys|'<? //nPos = fileAccessI.write (b,0,nRead); 6vfut$)[{ } lyS`X catch(Exception e){e.printStackTrace ();} Fy*t[> } `t7z
LC^c } K_Pbzj4(P csFLBP %N#A1 //打印回应的头信息 7](aPm8 public void logResponseHead(HttpURLConnection con) :IX_|8e ^ { ^\oMsU5( for(int i=1;;i++) &s8vmUt { D!DL6l` String header=con.getHeaderFieldKey(i); 3o2x&v if(header!=null) kmg/hNtN //responseHeaders.put(header,httpConnection.getHeaderField(header)); \IhHbcF`d Utility.log(header+" : "+con.getHeaderField(header)); (j(hr'f else -]Ny-[P break; yJ:rry } F Jp<J } 7 \AoMk}
m;J'y2h =$ yRivf.wH public void splitterStop() ok1w4#%, { \;+TZ1i_ bStop = true; 0}`0!Kv } WR9-HPF }vb.>hy z%;_h- } 0Of6$` C';Dc4j 2c'<rkA /* *&z!y/ **FileAccess.java 7*kTu0m *//文件访问(定位,写) 7sU+:a package NetFox; qL?$u07<9' import java.io.*; FMtg7+Q|> sk5B} - ,z01*Yx public class FileAccessI implements Serializable{ o?d`o$ J^=Xy(3e //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 -;O"Y?ME RandomAccessFile oSavedFile; \bies1TBB^ long nPos; tmQ,> 6st^-L Us\Nmso
z public FileAccessI() throws IOException N[I ?x5:u { GBTwQYF this("",0); 9aYVbq"" } ck$> :7*9W|e
BQ=JZ4& public FileAccessI(String sName,long nPos) throws IOException h05BZrE { f.c2AY~5[ oSavedFile = new RandomAccessFile(sName,"rw"); B@ >t$jK this.nPos = nPos; On(.(7sNc oSavedFile.seek(nPos); yb-4[C:i } @zJiR{Je-U `Bb32L xS; tmc public synchronized int write(byte[] b,int nStart,int nLen) @ %o' { wkY$J\J int n = -1; `NyO|9/4 try{ HOr Xxxp1^ oSavedFile.write(b,nStart,nLen); n0)y|B# n = nLen; y,6KU$G } }((P)\s catch(IOException e) ~"Su2{"8B { L/)eNZ e.printStackTrace (); ] I5&'#%2
} bduHYs+rq hb(H-`16 "g/UpnH return n; K."W/A! } |9[)-C~N7 4j(*%da wauM|/KG } D|2lBU hP_{$c{4:g i&-g /* _z\qtl~3 **SiteInfoBean.java DG,m;vg+ */ /Ri-iC > package NetFox; 6%V#_] 6A4{6B [xXV5 JU public class SiteInfoBean { A~;.9{6J[t +E+I.}sOB #dFE}!"#` private String sSiteURL; //Site's URL yQq|!'MK k private String sFilePath; //Saved File's Path qykI[4 private String sFileName; //Saved File's Name [;#^h/5E private int nSplitter; //Count of Splited Downloading File xs?]DJj D7Ds*X`!l g(R!M0hdF public SiteInfoBean() 'X~CrgQl {//nSplitter的缺省值为5 6&btAwvOHx //default value of nSplitter is 5
r@Xh8
r; this("","","",5); ;+n25_9 } S-79uo (\4YBaGd /S9n!H:MT public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) &-KQ
m20n { {~V_6wY g sSiteURL= sURL; X=VaBy4# sFilePath = sPath; 4rypT-%^ ; sFileName = sName; u"(2Xer this.nSplitter = nSpiltter; zX8{( zomg$@j ;(s.G-9S } ~g *`E!2 /+m7J"Km @9g!5dcT public String getSSiteURL() ^t[br6G { 2\#~%D>[ return sSiteURL; xw3A |Aj?r } T'7x,8&2| R7Ns5s3X \r}*<CRr6 public void setSSiteURL(String value) ;n b>IL { GFZx[*+%%z sSiteURL = value; V_9>Z? } RohD.`D wEEFpn_ >+S* Wtm5 public String getSFilePath() _2eL3xXha. { _m1WY7 return sFilePath; nVk]Qe } PU%WpI.w {'Gu@l J|b:Zo9<f" public void setSFilePath(String value) d-"[-+)- { #Y>d@ sFilePath = value; 9z(h8H } m
A|" tHo/Vly6Z j*jq2u public String getSFileName() u_S>`I { "HbrYYRb'
return sFileName; s`,. & } fQ,(,^!; <$`udP@ pl.=u0 * public void setSFileName(String value) <~Tfi*^+ { 7@i2Mz/eV sFileName = value; [oS.B\Vc } }u~r.= y{\(|j ]I0(_e|z} public int getNSplitter() +isaqfy/ { ]TKM.[[ return nSplitter; kN$L8U8f } H @8 ;6D o#F0 3 /J'dG% public void setNSplitter(int nCount) A\<WnG>xjP { *!+?%e{;b nSplitter = nCount; 0 }aw9g } +luW=j0V } "O{:jfq ^
P=CoLFa HUY1nb= /* z/7"! **Utility.java L QP4#7 */ R P6R1iN3 package NetFox; siGt5RH* oNBYJ]t g/m%A2M&aH public class Utility { ,h$j%->U ]6EXaf# 4kQL\Ld#E% public Utility() dDla?)F { w~=@+U$f t2vo;,^euL Ic&Jhw;]z } #-u?+Nk/ S#,
E)h/ //线程睡眠 f<G:}I public static void sleep(int nSecond) )haHI)xR { *G0r4Ui$ try{ -* ;`~5 Thread.sleep(nSecond); #$9rH
2zd } ^!>o5Y) catch(Exception e) @uI_4 a { v:$Y
|mh e.printStackTrace (); jP|(y]! } \muC_9ke } )|@UY(VZ^ nxh9'"th //日志 ur2`.dY>3" public static void log(String sMsg) !ZlNPPrq} { &za~=+ System.err.println(sMsg); ssC5YtF7X } tmI2BBv goV[C]| l~Sn`%PgA public static void log(int sMsg) sGD b< { Qf]ACN System.err.println(sMsg); SpUcrK;1 } M0zlB{eH } /0H39]y!~ ROHr%'owgL ,4%'~8'3 /* nY<hfqof **TestMethod.java MM%c */ nfMQ3KP package NetFox; 8"g.Z* e
RjpR?!\ )v67wn*1A public class TestMethod { H A(e Lqv5"r7eV ]n:)W.|`R public TestMethod() r:Xui- { ///xx/weblogic60b2_win.exe L?n*b try{ i
XI:yE; SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5);
$dLPvN //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); >_$DKY>$` SiteFileFetch fileFetch = new SiteFileFetch(bean); nn_j"Nu fileFetch.start(); #ab=]}2W_g } j@b4)t catch(Exception e){e.printStackTrace ();} 6"W~%FSJX @u2nG:FG oA&V,r } 6Hn3 !%?X% @9 WeTs va+ public static void main(String[] args) -)tu$W* { r='"X#CmV/ new TestMethod(); dviL5Eaj } mu/O\'5 } ArUGa(;f 点击下载更多相关资料
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