-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* kyp U&F **SiteFileFetch.java i!s~kk */ 41P4?"O package NetFox; p_D
on3 import java.io.*; !&1}w86 import java.net.*; ~)WfJ 0+$hkd n QwKky ^A public class SiteFileFetch extends Thread { >#Grf)@"6 %4QoF t;Fbt("]: SiteInfoBean siteInfoBean = null; //文件信息Bean <=B1"'\ long[] nStartPos; //开始位置 ?CcR
7l long[] nEndPos; //结束位置 Qi(e`(,' FileSplitterFetch[] fileSplitterFetch; //子线程对象 f\U? :83 long nFileLength; //文件长度 O>)n*OsS boolean bFirst = true; //是否第一次取文件 X}n&`y{/ boolean bStop = false; //停止标志 yVu^
> File tmpFile; //文件下载的临时信息 +?4*,8Tmmz DataOutputStream output; //输出到文件的输出流
6E)uu; 8 zLJ:U`uh\ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类)
4\ uZKv@, public SiteFileFetch(SiteInfoBean bean) throws IOException ;]l{D} { QZ:]8MHl] siteInfoBean = bean; Vz=j)[ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 's56L,^: tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); b#/V; if(tmpFile.exists ()) %l9WZ*yZ`2 { KxgR5#:i" bFirst = false; pqGf@24c< read_nPos(); SopNtcu! } Y]`lEq% else a!hI${Xn { Gdc~Lh nStartPos = new long[bean.getNSplitter()]; E9 80yXJR nEndPos = new long[bean.getNSplitter()]; +Y.uZJ6+ } s%S_K h0Sy']3m r(?'Y y W?4&lC^G } 4cVs(`g^ %$9)1"T0Y sJjl)Qs)T public void run() ;/hH=IT { ba:mO$ //获得文件长度 l/y
Kc8^< //分割文件 Xdp`Z'g //实例FileSplitterFetch YWn6wzu%Vc //启动FileSplitterFetch线程 #:Sy`G6!? //等待子线程返回 C&d"#I try{ X-;Qorb^ if(bFirst) FRJ:ym=E { AT'_0>x8 nFileLength = getFileSize(); v|,[5IY if(nFileLength == -1) k1 LtqV { _sf0{/< ) System.err.println("File Length is not known!"); A aF5` } w7*b}D@65\ else if(nFileLength == -2) hAxuZb7 ? { w Ycz\uV System.err.println("File is not access!"); \aJ-q?= } <>5:u else CrwcYzrRWl { Z+h70,| for(int i=0;i<nStartPos.length;i++)
`Hp.%G( { ZjI/zqBm nStartPos = (long)(i*(nFileLength/nStartPos.length)); a*n%SUP } luxKgcU for(int i=0;i<nEndPos.length-1;i++) =ZJ?xA8 { E 4$h%5 nEndPos = nStartPos[i+1]; @)juP- o% } @,>=X:7 nEndPos[nEndPos.length-1] = nFileLength; Xw}Y!;<IEu } |uBot#K| } YV _I-l0 51;%\@= _ry En //启动子线程 @vYN7 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 4Z
T for(int i=0;i<nStartPos.length;i++) t[yD8h { !=Kay^J~. fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), &+w!'LSaD siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), '/qe#S nStartPos,nEndPos,i); K&P{2Hndr Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); =iN_Ug+ fileSplitterFetch.start(); g2b4 ia!L } JjO/u>A3;7 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^{sI'l~ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); BaHgc 4zI // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", %?G.lej,x nEndPos = " + nFileLength); t T/*ZzMq# // fileSplitterFetch[nPos.length-1].start(); 9(evHR7 rJ~(Xu>,s xg1r 3 //等待子线程结束 ="TOa"Zk //int count = 0; (pxz#B4 //是否结束while循环 Bma|!p{ boolean breakWhile = false; {Ll8@'5 D
'_#?%3^ =Q0)t_z_ while(!bStop) ]8cX#N,M { 6!=9V0G~ write_nPos(); /n}V7 Utility.sleep(500); J-{E`ibGN breakWhile = true; Z5^UF2`Q @3=<wz< >0okb3+ for(int i=0;i<nStartPos.length;i++) LZbHK.G= { K<9MK>T if(!fileSplitterFetch.bDownOver) aj-uk(r { iQj{J1V breakWhile = false; x,*t/nzR break; :[?o7%" } G8c}re
} (c7{dYV if(breakWhile) F(n))`( break; aRKG)0= uUB%I 8 !7kOw65+0 //count++; s-DL=MD //if(count>4) *iN]#)3> // siteStop(); H;te)km} } ?S7:KnU>K _NN{Wk/3w AiI# " System.err.println("文件下载结束!"); HpC4$JMm } qUg4-Z4 catch(Exception e){e.printStackTrace ();} !|QeYGnq6 } %),O9*[9 ^0~1/ PhOw 9!C?2*>A P //获得文件长度 ~ +$><qj public long getFileSize() PiQs><FK8 {
';V+~pi int nFileLength = -1; P
&._-[ try{ LA Vgf> URL url = new URL(siteInfoBean.getSSiteURL()); (3*Hl HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); KO"iauW httpConnection.setRequestProperty("User-Agent","NetFox"); $B/cj^3 kniMXeiu #8|NZ6x, int responseCode=httpConnection.getResponseCode(); $ wB if(responseCode>=400) A1;t60z+q> { Sw)ftC~d processErrorCode(responseCode); U#4W"1~iX return -2; //-2 represent access is error [: j_Y3-9 } S5!2%-;<k 9q{dRS[A [J3;U6 String sHeader; "j>0A
Hem ,:,|A/U R[t[M}q for(int i=1;;i++) ?[">%^ { u] b6> //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 3!x)LUWfWY //Utility.log(in.readLine()); 7 #N
@B sHeader=httpConnection.getHeaderFieldKey(i); jd*H$BU^ if(sHeader!=null) p}uw-$O { G_]mNh if(sHeader.equals("Content-Length")) j>23QPG`6U { H[Cn@XE nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Nh%8; break; `^[ra%a } jL$X3QS: } f*Bc`+G else 'l;|t"R12 break; 2F(j=uV+ } E{J;-+t } z_)$g=9$ catch(IOException e){e.printStackTrace ();} =t2epIr5 catch(Exception e){e.printStackTrace ();} _De;SB%V #96a7K M\3!elp2z Utility.log(nFileLength); xuF_^ C&gJP7 UF J/Li{xp)Lg return nFileLength; VM`."un] } [cq>QMW KAZz)7 3L|k3 `I4 //保存下载信息(文件指针位置) 4M}/PoJ private void write_nPos() _DQdo { QB3AL;7 try{ t<tBOesQ output = new DataOutputStream(new FileOutputStream(tmpFile)); M=%p$\x output.writeInt(nStartPos.length); sQw-#f7t for(int i=0;i<nStartPos.length;i++) n)yqb { jBM>Pe^`3 // output.writeLong(nPos); _C?K;-v} output.writeLong(fileSplitterFetch.nStartPos); [Pay<]c6g output.writeLong(fileSplitterFetch.nEndPos); cQjJ9o7 } %?seX+ne output.close(); &IPT$=u } iBQf tq7 catch(IOException e){e.printStackTrace ();} 4(NI-|q0 catch(Exception e){e.printStackTrace ();} 2B#\683 } 9Bn
dbSi +x`tvo 2mRso.Ah //读取保存的下载信息(文件指针位置) |zf||ju private void read_nPos() Y+E@afsKs { Z'E@sc 9 try{ Z(s}
#- DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); a[/p(O int nCount = input.readInt(); ?~$y3<[ nStartPos = new long[nCount]; G} p~VLf nEndPos = new long[nCount]; u^uW<.#z for(int i=0;i<nStartPos.length;i++) *m7e>]- { 5g=" # nStartPos = input.readLong(); aaBBI S nEndPos = input.readLong(); uo0(W3Q * } 6-o Qs? input.close(); 975KRnj } !vU[V,~
catch(IOException e){e.printStackTrace ();} >[#4Pb7_Y catch(Exception e){e.printStackTrace ();} Cs$g]&a } .p&M@h
w 2iUF%> %V$^CWOy private void processErrorCode(int nErrorCode) zw0p} { \(u P{,ML System.err.println("Error Code : " + nErrorCode); {*: C$"L } ALG + :%0Z i}Y:o} //停止文件下载 u+]zi"k^s public void siteStop() iaMZ37 { I?1^\s#L bStop = true; 5EU3BVu&u for(int i=0;i<nStartPos.length;i++) wBr0s*1I fileSplitterFetch.splitterStop(); p4/D%*G^` 'RPe5 vB 6pH.sX$!_ } iM\W"OUl[ } [ [Z*n/tr //负责部分文件的抓取 uG/Zpi **FileSplitterFetch.java
M; V2O; */ gG#M-2P package NetFox; i#
QI}r Q ml<JF }^=J] import java.io.*; M]oaWQu import java.net.*; m~2PpO QqRL>.)W 7r:!HmRl public class FileSplitterFetch extends Thread { XXO
$[H3O(B0* %/4ChKf!VR String sURL; //File URL C}7Sh6 long nStartPos; //File Snippet Start Position O
Qd,.m long nEndPos; //File Snippet End Position 59GS: int nThreadID; //Thread's ID T$SGf.- boolean bDownOver = false; //Downing is over aCQAh[T boolean bStop = false; //Stop identical SDZ/rC!C FileAccessI fileAccessI = null; //File Access interface oB+drDp8U [V
=O$X_ 6?r}bs6Msx public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Zhf+u
r { {"-uaH>, this.sURL = sURL; c1c8):o+V this.nStartPos = nStart; Oo$i,|$$ this.nEndPos = nEnd; ih~ R?W nThreadID = id; :W^
k3/t fileAccessI = new FileAccessI(sName,nStartPos);//定位 Y'0H2B8 } /alJN`g ',~,hJ0 uvi+#4~G public void run() M/T
ll]\| { xO{yr[x"L while(nStartPos < nEndPos && !bStop) YB*I'm3q { mSr(PIH{\ HZKqGkE (}
?")$. try{ qi!+Ceo} URL url = new URL(sURL); ,Tjc\;~% HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); yJNQO'wcv httpConnection.setRequestProperty("User-Agent","NetFox"); =)!sWY: String sProperty = "bytes="+nStartPos+"-"; z&Cz!HrS httpConnection.setRequestProperty("RANGE",sProperty); 0w)Gb}o$ Utility.log(sProperty); ?NWc3 . NH~\kV *>
LA30R*v InputStream input = httpConnection.getInputStream(); q8#zv_>K //logResponseHead(httpConnection); j`7q7} /fv;`?~d* +VT/c byte[] b = new byte[1024]; grrM[Y7#~b int nRead; *3
8
u ~n while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) :Y>FuE { stQRl_(' nStartPos += fileAccessI.write(b,0,nRead); mBN+c9n/ //if(nThreadID == 1) :8=7)cW // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 6
);8z!+ } #83`T&Xw* "lLwgh; $Y`oqw?g+^ Utility.log("Thread " + nThreadID + " is over!"); (P'{A>aHl0 bDownOver = true; Vq$8!#~w //nPos = fileAccessI.write (b,0,nRead); > zA*W<g } [] cF*en catch(Exception e){e.printStackTrace ();} '-X[T} } s k_TKN`+ } q]Vxf!0*> 'Y2ImSWj g|TWoRx: //打印回应的头信息 z_f^L %J0 public void logResponseHead(HttpURLConnection con) ^m
Ua5w { L0.F}~S for(int i=1;;i++) vB<9M-sa0 { -kzp>= String header=con.getHeaderFieldKey(i); V9Pw\K!w#\ if(header!=null) tJ$gH; //responseHeaders.put(header,httpConnection.getHeaderField(header)); `NySTd)\ Utility.log(header+" : "+con.getHeaderField(header)); fDjJdRS" else L.2!Q3& break; LIE5of } G,!{Q''w } 2Q=I`H_ Z\r?>2 CT?4A1[aD public void splitterStop() !mH
!W5& { uA4xxY bStop = true; E5q t~:C| } NK\0X5##. 0oQJ}8t LEuDDJ- } ka/>jV" ZZM;%i-B X2T_}{ /* @>*r2=#14 **FileAccess.java 5[LDG/{Tys *//文件访问(定位,写) ;Wgkf_3 package NetFox; :.=#U import java.io.*; ' ""s%C+ _Un*x5u2O ^+w1:C 5 public class FileAccessI implements Serializable{ .On3ZN NvvD~Bb //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 yMEI^,0" RandomAccessFile oSavedFile; %$_Y"82 long nPos; vRb7=fXf <m/XGFc 2?F?C public FileAccessI() throws IOException fu
iTy72 { }{}?mQ this("",0); P~84#5R1 } _\<TjGtG T|p%4hH XVF!l>nE public FileAccessI(String sName,long nPos) throws IOException /[5\T2GI { a4XK.[O oSavedFile = new RandomAccessFile(sName,"rw"); X4L@|"ZI this.nPos = nPos; Wcbm,O4u oSavedFile.seek(nPos); nub!*)q } 0v#p4@Z {113B) kZ;Y/DH public synchronized int write(byte[] b,int nStart,int nLen) cSjX/%*!m { ^B8[B&K int n = -1; cT@H49#uB try{ LVy`U07C V oSavedFile.write(b,nStart,nLen); e~SRGyIww n = nLen; hY/qMK5 } *TrpW?]Y& catch(IOException e) <E:_9#Z0sc { - _~\d+>w e.printStackTrace (); N/[!$B0H@ } G^Y^)pc] MwX8F YF
D C)~%(< D return n; K+d{R=s^ } 9I}Uh#]k< ix38|G9U HIUP
=/x } 3[@:I^q lR/Uboyy #=72/[ /* nkz<t **SiteInfoBean.java W)^%/lAh */ l3y}nh+ 8 package NetFox; B`w8d[cL7 $h}w:AV: D&=+PAX public class SiteInfoBean { E&Zt<pRf;2 wv=U[:Y (,|eE)+ private String sSiteURL; //Site's URL o?+?@Xb' private String sFilePath; //Saved File's Path k8i0`VY5Y private String sFileName; //Saved File's Name HG)$W private int nSplitter; //Count of Splited Downloading File f%JM
a]yV wKoar ;Zc0imYL public SiteInfoBean() GnCs_[*&r {//nSplitter的缺省值为5 +U>Y.YP //default value of nSplitter is 5 }2^qM^,0 this("","","",5); 99%R/m } Q(R-8" />uE)R$ )TBm?VMe public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 79D;0 { roBbo sSiteURL= sURL; Zqv sFilePath = sPath; 3JD"* <zs sFileName = sName; Q'Uv5p"X this.nSplitter = nSpiltter; uZ+"-Ig o)Px d NC YOY } 4F<was/ '}OAl ks,d4b=-> public String getSSiteURL() x7i,jMR { KM[&WT return sSiteURL; |x=(}g } @RCZ![XYWg ZTj!ti;5 vg1E@rH|} public void setSSiteURL(String value) .Q{VY]B^ { FTzc,6 sSiteURL = value; LG{50sP` } !Q}Bz*Y 1_8@yO @y6^/' public String getSFilePath() &o&}5Aba9 { kX*.BZI}C return sFilePath; HIvSh6|0p } feM( d"a\`# y>cT{ )E$ public void setSFilePath(String value) dIA1\;@ { ,,g: x sFilePath = value; J:I As:e` } g>a%
gVly YllW2g: m6@;!*Y public String getSFileName() C?<[oQb# { 2ppJ;P{k return sFileName; 0}e&ONDQ } gEmsPk, <!*O[0s R$"> public void setSFileName(String value) }_Y\6fcd { Y+EwBg)co sFileName = value; (m')dSZ } Bi0&F1ZC! @-ir Ng*O/g`%L public int getNSplitter() 3'7X[{uBr { `0=j,54cx return nSplitter; :Yi 4Ia } >/.Ae8I) T+:GYab/ z:08;}t public void setNSplitter(int nCount) @Dd ( { 2W/*1K} nSplitter = nCount; V|4k=_- } "&\]1A}Z-x } }dEf |6_ /f>I;z1 <}%gZ:Z6g /* p(yHB([8 **Utility.java B^j(Fq */ //#]CsFiP package NetFox; iUS?xKN$~- Ft @ZK!'@ '~x jaa;. public class Utility { `t7GYmw^# :|=Xh"l" Pj7MR/AH public Utility() 9hhYyqGsO { &Z+.FTo sb%l N @nM+*0
$d } *#B"%;Ln 2K2*UC`f //线程睡眠 ro^T L public static void sleep(int nSecond) Fz]!2rt { :(4];Va try{ l,
-q:8 Thread.sleep(nSecond); px^brzLQo } Rm@F9D[, catch(Exception e) \>e>J\t: { p49T3V e.printStackTrace (); J 77*Ue^ } rmdG"s } ?WrL<?r)}U P}D5 j //日志 nY?X@avo> public static void log(String sMsg) 2/l4,x { TA+/35^? System.err.println(sMsg); Cx8
H } _;k))K^ L$}'6y/@ 9`DY6qfly public static void log(int sMsg) |d_ rK2 { |bjLmGb System.err.println(sMsg); \LDcIK= } 6X$iTJ[\x } E>qe hs,g =L}$#Y8? q<A,S8'm /* *q(HW **TestMethod.java ,CnUQx0 */ Xd9<`gu package NetFox; %l)~C%T U,nQnD"!t& v5`Odbc=w public class TestMethod { aB4L$M8x LP}YHW/ axd9b, public TestMethod() n`7n5M* { ///xx/weblogic60b2_win.exe SP5t=#M6 try{ ZQrgYeQl" SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); xqaw00,s //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); lV2MRxI SiteFileFetch fileFetch = new SiteFileFetch(bean); s&qr2'F+z fileFetch.start(); R)qK{wq(1E } nB86oQ/S catch(Exception e){e.printStackTrace ();} +PkN~m` 2v\-xg%1 Jl,\^)DSw } &8 4Izs/[ ]lzOz<0q n0kkUc-`
public static void main(String[] args) \{`*`WQF { 2E}^'o new TestMethod(); MFLw^10(T } bLyG3~P;0 } _fANl}Mf: 点击下载更多相关资料
|