-
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
|
/* r}**^"mFy **SiteFileFetch.java ]C;X/8'Jf5 */ =JkPE2mU package NetFox; V< Ib#rd' import java.io.*; z4qc)-
{L import java.net.*; 5@lVuMIYT t)4><22of ]<3n;*8k? public class SiteFileFetch extends Thread { afw`Heaa2( 4'+g/i1S
F xekU2u}WE SiteInfoBean siteInfoBean = null; //文件信息Bean %`_Rl>@K= long[] nStartPos; //开始位置 ]\C wa9 long[] nEndPos; //结束位置 e9=UTn{! FileSplitterFetch[] fileSplitterFetch; //子线程对象 E/3i_R long nFileLength; //文件长度 tEN8S]X boolean bFirst = true; //是否第一次取文件 iV$TvD+ boolean bStop = false; //停止标志 EV'i/*v}\ File tmpFile; //文件下载的临时信息 ? K ,d DataOutputStream output; //输出到文件的输出流 4St-Q]Y _ 8nu@6 )# //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 8.!+Hm4 public SiteFileFetch(SiteInfoBean bean) throws IOException +SB>> { yPd6{% w siteInfoBean = bean; r)
u@,P //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Yyr
qO^9m tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); /V{1Zw= if(tmpFile.exists ()) S}b^_+UbP { h+ms%tNT bFirst = false; N>H#Ew@2U read_nPos(); L>Y3t1= } :I{9k~ else (e_z*o)\T { l$&dTI<# nStartPos = new long[bean.getNSplitter()]; SHYbQF2 nEndPos = new long[bean.getNSplitter()]; .k-t5d } b/w5K2 p9E/#U8A_ |vw],r6 <N:)Xf9` } n)j0h- sVpET 1u8hnG public void run() R.\]JvqO { vqAEF^HYry //获得文件长度 zM(-f|wVI) //分割文件 4wN5 x[vp //实例FileSplitterFetch m1e Sn |)7 //启动FileSplitterFetch线程 /9A6"Z //等待子线程返回 `TYC]9 try{ va:<W H if(bFirst) 6V"uovN2 { !' 0PM[ nFileLength = getFileSize(); GkIhPn(d if(nFileLength == -1) #+N_wIP4 { :-WNw
n System.err.println("File Length is not known!"); >,QCKZH } ULhXyItL else if(nFileLength == -2) WD_{bd) { MGf *+!y, System.err.println("File is not access!"); dC;&X
g` } w59q* 2 else tLU@&NY` {
LJ;&02w@ for(int i=0;i<nStartPos.length;i++) nLOK1@,4 { BNF*1JO nStartPos = (long)(i*(nFileLength/nStartPos.length)); }.pqV
X{d } m[%':^vSr for(int i=0;i<nEndPos.length-1;i++) lQiw8qD { xkRS?Q g nEndPos = nStartPos[i+1]; KLW>O_+ } =''WA:,=h nEndPos[nEndPos.length-1] = nFileLength; Wx8:GBM$2 } S?6-I,]h } J[0 5T1 g\?v 5 LEOri=?RF //启动子线程 ^eyVEN fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; i=*H|) for(int i=0;i<nStartPos.length;i++)
4JU 2x { _!VtM#G[ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), YXZP-=fB>i siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), zy%0;% nStartPos,nEndPos,i); cWG%>.`5r Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); oc]:Ty fileSplitterFetch.start(); O$;#GpR } Rnoz[1y?0 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), by0K:*C siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); S~ Z<-@S // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", uY(8KW nEndPos = " + nFileLength); m?4hEwQxf // fileSplitterFetch[nPos.length-1].start(); .>#O'Z&q9 J}[[tl a]7g\rg) //等待子线程结束 QuG"]$ //int count = 0; DQ3L= //是否结束while循环 ZgG~xl\My boolean breakWhile = false; zwU[!i) u8.Tu7~ +p63J while(!bStop) [U",yN]d { _k26(rdI@- write_nPos(); 1<1+nGO Utility.sleep(500); {J
izCUo_' breakWhile = true; Ha|}Oj
1KrJS(. M_Ag*?2I for(int i=0;i<nStartPos.length;i++) yyljyE { GC7 WRA if(!fileSplitterFetch.bDownOver) M;Pry3J { HV)aVkr/& breakWhile = false; ,dTmI{@O break; H7.l)' } O^=+"O] } Li}5aK if(breakWhile) k9OGnCW\ break; wEM=Tr/h ~WTk X(\ #"KC29!Yj //count++; Sx QA*}N //if(count>4) ObEz 0Rj // siteStop(); -$o0P'Vx } n<j+KD#a pXl[I; C{pOGc@ System.err.println("文件下载结束!"); QK+,63@D\= } x1#>"z7 catch(Exception e){e.printStackTrace ();} "lw|EpQk` } qjhV/fsfb h#O9TB PBb&.< //获得文件长度 lTqlQ<`V public long getFileSize() G2kU_ { 5[SwF&zZ int nFileLength = -1; <C&|8@A0 try{ vuPNru" 2 URL url = new URL(siteInfoBean.getSSiteURL()); Rv9jLH HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); i,*m(C@F} httpConnection.setRequestProperty("User-Agent","NetFox"); T2<%[AF0 4\&Y;upy+ B F<u3p?? int responseCode=httpConnection.getResponseCode(); k*fU:q1
if(responseCode>=400) +m%%Bz> { hk4t #Km processErrorCode(responseCode); ? /z[Jx. return -2; //-2 represent access is error ?$109wZ:9 } |}
b+$J R\3a Sx L tj@(0}pi4 String sHeader; ZK^cG'^2| >[|N%9\ c]ARgrH- for(int i=1;;i++) X n!mdR { !="q"X/* //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); -Y/i
h(I^ //Utility.log(in.readLine()); 70c]|5 sHeader=httpConnection.getHeaderFieldKey(i); U*$P"sS` if(sHeader!=null) $C\ETQ@ { OY`B{jV- if(sHeader.equals("Content-Length")) &su'znLV { Z*co\ pW nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); !Rl|o^Vw>{ break; zg<-%r'$ } ^)gyKl:E' } ^_bG{du else dyWp'vCQs\ break; ^b+>r } )FQ"l{P } w_56y8Pd4 catch(IOException e){e.printStackTrace ();} QE(.w
dHP catch(Exception e){e.printStackTrace ();} AYA{_^#+3 MJ)lZ!KZ H>EM3cFU Utility.log(nFileLength); K4!-%d$ }~I!'J#) >s{I@#9 return nFileLength; XX~vg>3_ } V|MGG fkzSX8a9} k
<oB9J //保存下载信息(文件指针位置) BkB>eE1)Ea private void write_nPos() Wm}c-GD { 6^"QABc try{ t_3j_` output = new DataOutputStream(new FileOutputStream(tmpFile)); %hnBpz output.writeInt(nStartPos.length); c1'@_Is for(int i=0;i<nStartPos.length;i++) o{s2T)2 { +NPL.b| // output.writeLong(nPos); F<* / J] output.writeLong(fileSplitterFetch.nStartPos); &F&`y output.writeLong(fileSplitterFetch.nEndPos); QQ3<)i } O^@8Drgc output.close(); *DF3juf~ } I@'[> t catch(IOException e){e.printStackTrace ();} [A-_?#cZ catch(Exception e){e.printStackTrace ();} a$My6Qa# } ]nTeTW d/7fJ8y8 xo"GNFh! //读取保存的下载信息(文件指针位置) 2Xt4Rqk $ private void read_nPos() Hy.u6Jt*/ { F(G..XJQ try{ }\"EI<$s DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); W>@ti9\t int nCount = input.readInt(); Z,).)y#B nStartPos = new long[nCount]; =A"Abmx| nEndPos = new long[nCount]; ]at$ohS for(int i=0;i<nStartPos.length;i++) E`IXBI { Q]k<Y nStartPos = input.readLong(); hLO)-ueb nEndPos = input.readLong(); [RyVR } !vSI"$xd input.close(); 66v,/#K } Nm*(?1 catch(IOException e){e.printStackTrace ();} 9c>i>Vja! catch(Exception e){e.printStackTrace ();} !7N:cx'Qy } >ED;_L*_o :R;w<Tbz" Q
dj(D\. private void processErrorCode(int nErrorCode) xVx s~p1 { \((iR>^| System.err.println("Error Code : " + nErrorCode); hY"eGaoF" } p*g Fr hm /UCBoQ$/] ;wv[';J //停止文件下载 RHF"$6EAFG public void siteStop() ZbFD |~[ V { W{6QvQD8 bStop = true; 7)rQf{q7 for(int i=0;i<nStartPos.length;i++) BIx*t9wA fileSplitterFetch.splitterStop(); &;BhL%)} q*hn5 K* H,7='n7" } k6tCfq; } &[ })FI //负责部分文件的抓取 GkAd"<B **FileSplitterFetch.java jD
S?p)& */ s9?mX@>h package NetFox;
?8>a;0 ]iV]7g8: /`PYk]mJh import java.io.*; `G\
qGllX import java.net.*; *p{p.%Qs: 4 9qa TegdB|y7O public class FileSplitterFetch extends Thread { lu#a.41 Pf;OYWST M\1CDU+*Ns String sURL; //File URL W~ yb>+u long nStartPos; //File Snippet Start Position RoqkT|#$ long nEndPos; //File Snippet End Position mR0`wrt int nThreadID; //Thread's ID #qd!_oN boolean bDownOver = false; //Downing is over '(]Wtx%9" boolean bStop = false; //Stop identical }&v}S6T FileAccessI fileAccessI = null; //File Access interface 6i/unwe!`) Y>$5j}K rz|T2K public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException X@~/.H5 { !'$*Z( this.sURL = sURL; zw<<st Bp this.nStartPos = nStart; 4MC]s~n this.nEndPos = nEnd; .][yH[F nThreadID = id; z_c-1iXCW fileAccessI = new FileAccessI(sName,nStartPos);//定位 l$u52e!7 } ]}`t~#Irz eF3NyL(A >?+Rtg|${ public void run() U&3!=|j { }s2CND while(nStartPos < nEndPos && !bStop) ~<1s[Hu { J.iz%8 )CXlPbhY? cqU6 Y*n try{
pj %]t URL url = new URL(sURL); shw?_#?1dy HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); @3n!5XM{EE httpConnection.setRequestProperty("User-Agent","NetFox"); veDv14 String sProperty = "bytes="+nStartPos+"-"; 091m$~r* httpConnection.setRequestProperty("RANGE",sProperty); :$I"n\ Utility.log(sProperty); DN^+"_:TB |QS|\8g{0V 8wWp+Hk InputStream input = httpConnection.getInputStream(); -w+.' //logResponseHead(httpConnection); T4x%3-4; 1F.._5_"] :h@V,m Z byte[] b = new byte[1024]; QFTiE1mGH int nRead; /5 z+N(RFC while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) gLMb,buqC { :r{-:
nStartPos += fileAccessI.write(b,0,nRead); /[c_,G"" //if(nThreadID == 1) 2dz)rjdO, // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); U*nB=
= } Q]5_s{kiz ;)ay uS sQ 2Ys=/mh Utility.log("Thread " + nThreadID + " is over!"); FqyxvL. bDownOver = true; 2-m@- //nPos = fileAccessI.write (b,0,nRead); e# Y{YtE } WG,Il/ catch(Exception e){e.printStackTrace ();} e=XP4h } ~v&Q\>' } &NF$_*\E i:Y5aZc/Ds 54{E&QvL8o //打印回应的头信息 *~U*:>hS public void logResponseHead(HttpURLConnection con) p` ~=v4;b { 8XV RRk for(int i=1;;i++) m
+A4aQ9 { U:x;4 String header=con.getHeaderFieldKey(i); i&(1<S>P if(header!=null) x7B;\D#`i/ //responseHeaders.put(header,httpConnection.getHeaderField(header)); ^vm6JWwN0B Utility.log(header+" : "+con.getHeaderField(header)); "T[BSj?E else (Jb#'(~a break; (e_<~+E } 0fj C>AS } {'alA h@JX?LzZS UvMkL public void splitterStop() |FFz $'8) { _{): w~zi bStop = true; +DQUL|\ } G>?kskm ^EN
)}:%Z {Zw;<1{E } +hKU]DP2; 3AENY@* M8:i ] /* [$K8y&\L **FileAccess.java D]>Z5nr | *//文件访问(定位,写) .[eC w package NetFox; K:9AP{+ import java.io.*; Rkg)yme!N x?A<X2 bD/ZKvg public class FileAccessI implements Serializable{ o6w8Y/VPu tf54EIy5Y //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 9:g]DIL RandomAccessFile oSavedFile; \^pc"?Rc long nPos; /
j "}e_Q mc`Z;D/mt MrUjqv6a[ public FileAccessI() throws IOException myVa5m!7Q { i@D4bd9lR this("",0); G*_]Lz(N } |_g7k2oLY \7h>9}wGf ]jI<Js*F public FileAccessI(String sName,long nPos) throws IOException a0k;way { J9;fqQCt oSavedFile = new RandomAccessFile(sName,"rw"); g/68&
M this.nPos = nPos; @J>JZ7m]\ oSavedFile.seek(nPos); Uu*iL< ` } K:XP;#OsP 6DU(KYN ?vbAaRg50s public synchronized int write(byte[] b,int nStart,int nLen) =rZ'!Pa { wjH1Ombt int n = -1; 7.
$wK. try{ <-'
!I& oSavedFile.write(b,nStart,nLen); A4rMJ+!5 n = nLen; cR!M{U.q } a-S
tOO5s catch(IOException e) IS!OO< { ZDL1H3;R e.printStackTrace (); b{aB^a:f=L } yEjiMtQll] 2[(~_VJ w-R.) return n; nql9SQ'\\ } w
oIZFus =Yl ea,S N.q*jY=X| } .`_iWfK Lj GZp"&{ |/xx**? /* $mAC8a_Zu **SiteInfoBean.java PCL
;Z */ sG_/E-%5' package NetFox; XC;Icr) {Ak
4G L 'oY#a9~Z{ public class SiteInfoBean { VoUo!t:(+ %GY'pQz OE0G*`m private String sSiteURL; //Site's URL Wq+GlB* private String sFilePath; //Saved File's Path /i27F2NQm private String sFileName; //Saved File's Name u_+iH$zA private int nSplitter; //Count of Splited Downloading File AIn/v`JeX 6|B9kh} R3a}YwJFXF public SiteInfoBean() [PUu9rz# {//nSplitter的缺省值为5 M!i|,S //default value of nSplitter is 5 a9p:k
]{ this("","","",5); $Z;/Sh } a,S;JF)v Mth:V45G| 8 I_ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 4P1}XYD-2 { ^Z;zA@[wt sSiteURL= sURL; mgVYKZWL-i sFilePath = sPath; $qYP|W sFileName = sName; @>VVB{1@,] this.nSplitter = nSpiltter; jMTM:~0N , p~1fB-/ .S-) } KfBT'6t :zKMw= }kr?+)wB public String getSSiteURL() U7D!w$4 { xR3$sA2 return sSiteURL; u)<s*jk } Pb8@owG8 kq5X<'MM9N _7;:*'>a4 public void setSSiteURL(String value) $+7uB-KsU { n:`f.jG | sSiteURL = value; m?<E >-bI } %Rn*oV ?BfE*I$\h +K'Hr:( public String getSFilePath() %;dj6):@ { 2NMs-Zs return sFilePath; 18Y#=uH} } f2;.He =f!clhO "}V_.I*+ public void setSFilePath(String value) c?N,Cd~q { Wy%FF\D.Y sFilePath = value; 5owK2 } jD${ZIv xHMFYt+0$G v&bG`\ ! public String getSFileName() G[1\5dK*uR { bf|ePGW? return sFileName; A,BYi$ } f}J(nz>Sh )U=]HpuzI J ZkQ/vp( public void setSFileName(String value) Nte$cTjX { @$~IPg[J sFileName = value; -Caj>K } K{{_qFj@<y *~>p;* G bclR:G public int getNSplitter() ^H&U_ { $rI 1|;^ return nSplitter; ^sB0$|DU } 15hqoo9! r0 )ne|&Hp a eeor public void setNSplitter(int nCount) 3 ye { QeG9CS)E}j nSplitter = nCount; 1"L"LU' } (
*Xn"o } &iVdqr1, P.qzP/Ny a5GLbanF /* yji[Yde;| **Utility.java H=Ilum06 */ !TJ,:c]4{! package NetFox; CF2Bd:mfZ S.)Jp-&K c%J6!\ public class Utility { o]Rlivahm 4G?^#+|^ eM:J_>7t public Utility() ANy*'/f { Ph1XI&us9 =y4dR#R(\ hU8Y&R)=9 } 52dD(
8&)v%TX //线程睡眠 8s@N NjV public static void sleep(int nSecond) LWN{ { Wc[,kc try{ )&Oc7\J, Thread.sleep(nSecond); /v8Q17O?e } RhH1nf2UR catch(Exception e) lGl'A}]#$ { 3 /@z4:p0R e.printStackTrace (); %, kP_[!>Q } ]~KLdgru_ } ^AS\a4`/ b}3"v( //日志 S{rltT- public static void log(String sMsg) VN0We<\Z { $'498%K2 System.err.println(sMsg); _U<fS } d9#Vq=H / :TH cI;PG8 ej`%}e%2 public static void log(int sMsg) hfaU-IPcFX { GQqGrUQ*} System.err.println(sMsg); `hi=y BO } ^dHQ<L3.* } Y$ys4X 0=j }` [1VA`:?W /* =?<WCR
C* **TestMethod.java H\67Pd(Z6 */ |h>PUt@LL package NetFox; h:YD$XE ;]>kp^C# n|w+08c" public class TestMethod { )/H;5 cn *qd:f!Q3 ~RhUg~o public TestMethod() GXtMX ha, { ///xx/weblogic60b2_win.exe M&Ka^h;N try{ \<4N'|: SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ;b$P*dSG} //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); H_DCdUgC' SiteFileFetch fileFetch = new SiteFileFetch(bean); {PHH1dC{ fileFetch.start(); `8:)? 0Ez } zUfq. catch(Exception e){e.printStackTrace ();} H U|.5tP 3S0.sU~_U Kg[OUBv } nw+~:c 9%!h/m>rW /{i~CGc;" public static void main(String[] args) ~MC|
{ 3o<d=@`r new TestMethod(); _bFUr } :t}\%%EbmE } Q]:O#;"< 点击下载更多相关资料
|