-
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
|
/* 8M@BG8 **SiteFileFetch.java lL]y~u */ JdZ+Hp3. package NetFox; P0`Mdk371 import java.io.*; Y(.OF
Q import java.net.*; AoA!q> WyP W* eY{+~|KZ public class SiteFileFetch extends Thread { ~=R SKyzt >
iE!m p4V eRJk% SiteInfoBean siteInfoBean = null; //文件信息Bean hzk6rYg1 long[] nStartPos; //开始位置 nQ|r"|g long[] nEndPos; //结束位置 r\nx= FileSplitterFetch[] fileSplitterFetch; //子线程对象 0Z{j>=$ long nFileLength; //文件长度 npRSE v boolean bFirst = true; //是否第一次取文件 r>GZ58i boolean bStop = false; //停止标志 /b|0PMX File tmpFile; //文件下载的临时信息 ?xK,mbFgl DataOutputStream output; //输出到文件的输出流 Q f(p~a(d LJoGpr8 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) e8'wG{3A public SiteFileFetch(SiteInfoBean bean) throws IOException AIA6yeaU { ,vW:}&U siteInfoBean = bean; pLv$\MiZ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); ;-UmY}MU tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); g/13~UM\ if(tmpFile.exists ()) I(=V}s2 { QRLt9L bFirst = false; 2w)-\/j} read_nPos(); >
xIJE2 } tH'2gl else YJ(*wByM { lsN~*q?~] nStartPos = new long[bean.getNSplitter()]; @29U@T nEndPos = new long[bean.getNSplitter()]; |d6T/Uxo } r,_?F7 =)|-?\[w RmZ]"
` mDZ*E !B } a1Qv@p^._b xeGb?DPu \c^45<G2qA public void run() ?`J[[", { ~}Rj$%_ //获得文件长度 r H ~" 4 //分割文件 I@\OaUGr+ //实例FileSplitterFetch BC'llD //启动FileSplitterFetch线程 s`>[F@N7.o //等待子线程返回 -GLMmZJt try{ pKi& [ if(bFirst) Rb3V^;i { u+{a8= nFileLength = getFileSize(); i1RiGS if(nFileLength == -1) }jill+] { A=Ss6-Je System.err.println("File Length is not known!"); %c[ V } |F#1C9]P else if(nFileLength == -2) 8b0d]*q { 5E notp[ System.err.println("File is not access!"); | [>UH } S8e{K else H.UX,O@ { [V:\\$ for(int i=0;i<nStartPos.length;i++) " LJq%E { XkyKBg- nStartPos = (long)(i*(nFileLength/nStartPos.length)); n@ G[ } >ooZj9:' for(int i=0;i<nEndPos.length-1;i++) qTQBt} { Z(!00^ nEndPos = nStartPos[i+1]; o6//IOZ } sN5B7)Vc nEndPos[nEndPos.length-1] = nFileLength; CW<N: F.9 } wb~@7,D } W0}B'VS.I puT'y c_elShK8# //启动子线程 MTUn3;c/ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; O(_[ayE for(int i=0;i<nStartPos.length;i++) &5:tn=E { (e"iO`H fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^n+ !4(@= siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), [k-+AA>: nStartPos,nEndPos,i); >$ 2V%}; Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); "le>_Ze_>| fileSplitterFetch.start(); p0pWzwTG3 } tY
<Z'xA? // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), VcoOeAKL siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); *_ ?dVhxf // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 0:b2(^]bg nEndPos = " + nFileLength); Gm\/Y:U // fileSplitterFetch[nPos.length-1].start(); Gdg"gi!4 Ge<nxl<Bd 3N_"rNKD //等待子线程结束 Bp@v,)8* //int count = 0; a+Ac[> //是否结束while循环 wg w(YU boolean breakWhile = false; 'R_g">B. <^$<#Kd rl0< Ls while(!bStop) 8.[SU { T*KMksjxm` write_nPos(); K#"O
a
h Utility.sleep(500); )&!&AlLn breakWhile = true; 5ls6t{Ci __.+s32SS$ Xn{1 FJX/ for(int i=0;i<nStartPos.length;i++) ` Jdb ; { ~s5SZK* if(!fileSplitterFetch.bDownOver) %HJK; { %plo=RF breakWhile = false; 7.`fJf? break; db6mfxi } 1/"WD?a } I(XOE$3 if(breakWhile) h*v8#\b$J_ break; _8E/)M &%-73nYw ^#sU*trr //count++; QqU!Najf //if(count>4) !/wtYI-` // siteStop(); mrw=T. } S9#)A-> h2D>;k %Z1N;g0 System.err.println("文件下载结束!"); s~Te } bcYF\@}; catch(Exception e){e.printStackTrace ();} [ 1u-Q%?# } Gn&4V}F cCxBzkH6 p3^m9J //获得文件长度 ,S!azN= public long getFileSize() }+sT4'Ah> { F|!){=
int nFileLength = -1; 1@-Ns try{ \P6$mh\T URL url = new URL(siteInfoBean.getSSiteURL()); L+i(TM= HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /~<@ *-' httpConnection.setRequestProperty("User-Agent","NetFox"); |)*fRL, q*9!,!e LSRk7'0 int responseCode=httpConnection.getResponseCode(); b1($R[ if(responseCode>=400) 7"C$pm6 { =y!$/(H processErrorCode(responseCode); g
pOC`=
return -2; //-2 represent access is error c??mL4$'N } ruy}/7uf \*<d{gZ~ `V04\05 String sHeader; >m$ 1+30X &e!7Z40w@& SBS3?hw
for(int i=1;;i++) kbe-1 <72 { {Ja!~N;3 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); \QCJ4}\CS //Utility.log(in.readLine()); Dbz3;t sHeader=httpConnection.getHeaderFieldKey(i); 7yh/BZ1 if(sHeader!=null) aSnFKB { eYvWZJa4 if(sHeader.equals("Content-Length")) @
rc{SB { %B.yW`,X nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); HKUn`ng break; b"{'T]"*j } (P:<t6;+ } #n8IZ3+ else $F5 b break; bXNk%W[n } {Sj9%2'M) } (:>,u*x% catch(IOException e){e.printStackTrace ();} Bn &Ws catch(Exception e){e.printStackTrace ();} 1bn^.768l 736Jq^T XSyHk"g` Utility.log(nFileLength); ?o|f': e0,|Wm #iHs*
/85 return nFileLength; O[ef#R! } TJR:vr fNW"+ <W 0a XPPnuX //保存下载信息(文件指针位置) ]Yn_}Bq private void write_nPos() Y<%@s}zc { UWo]s. try{ '?p<lu^^B output = new DataOutputStream(new FileOutputStream(tmpFile)); XLrwxj0 output.writeInt(nStartPos.length); }*S `qW;B for(int i=0;i<nStartPos.length;i++) $arK( { YF>m$?; // output.writeLong(nPos); %#xaA'?
[ output.writeLong(fileSplitterFetch.nStartPos); 2$ze=
/ l output.writeLong(fileSplitterFetch.nEndPos); 9~/J35 } <"my^ output.close(); '$ t } /Y2}a<3&0 catch(IOException e){e.printStackTrace ();} U ^5Kz-5. catch(Exception e){e.printStackTrace ();} hJpxf,?'K } A"dR{8&0 P 'od` hFy;ffs. //读取保存的下载信息(文件指针位置) DrY:9[LP private void read_nPos() ^Dn D>h@q {
:7]Sa` try{ [R^iF DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Ay0U=#XP int nCount = input.readInt(); WGZ9B^A nStartPos = new long[nCount]; jYmR nEndPos = new long[nCount]; %|q>pin2 for(int i=0;i<nStartPos.length;i++) sl`s_$J { st:`y=F_ nStartPos = input.readLong(); os:A] nEndPos = input.readLong(); 0vD7v } S]Mw#O| input.close(); sg3OL/" }
T^k7o^N> catch(IOException e){e.printStackTrace ();} E^/t$M|H catch(Exception e){e.printStackTrace ();} 'O_3)x5 } gf
&Pn 1;Cyz) LcTt)rs
f private void processErrorCode(int nErrorCode) Ch|jtVeuyJ { f$Fhf?' System.err.println("Error Code : " + nErrorCode); Pama#6?OPh } qGB{7-r u yDegcAn? f=r<nb'H //停止文件下载 -~v2BN/ public void siteStop() %4,O 2\0?& { pm
9"4 z bStop = true; F`XP@Xx for(int i=0;i<nStartPos.length;i++) 9CWF{" fileSplitterFetch.splitterStop(); "8x8UgG iXVe.n 1AM!8VR2 } *U,@q4 } \F/hMXDlJ //负责部分文件的抓取 x7!L{(E3 **FileSplitterFetch.java WrxP */ d"*uBVzXm package NetFox; --HZX
H Y&DmE '$ => import java.io.*; Mh:L$f0A%O import java.net.*; emqZztccZ 6z#acE1)M p'*>vk public class FileSplitterFetch extends Thread { G\Cp7:j} Eg#K.5hJ wnEyl[ac String sURL; //File URL "$+Jnc!! long nStartPos; //File Snippet Start Position lm-dW'7& long nEndPos; //File Snippet End Position |Mup8(gCk int nThreadID; //Thread's ID [B#R94 boolean bDownOver = false; //Downing is over ;o2$
Q boolean bStop = false; //Stop identical m.#
VYN`+A FileAccessI fileAccessI = null; //File Access interface bYpntV hKLCJ#T |,gc_G public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException e,vvzso { 1PQ~jfGi this.sURL = sURL; .f%fHj this.nStartPos = nStart; K1"*.\?F this.nEndPos = nEnd; ?(Dq ?-. nThreadID = id; VM
GS[qrG fileAccessI = new FileAccessI(sName,nStartPos);//定位 RKHyw08 } (2J: # c'>/ \E72L5nJW public void run() PV'x+bN5 { |:nOp(A\* while(nStartPos < nEndPos && !bStop) m? J0i>H
{ 4o
<Uy u~7hWiY<2 H]{v;;'~ try{ C*)3e*T* URL url = new URL(sURL); r3&G)g=u HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); |[<_GQl httpConnection.setRequestProperty("User-Agent","NetFox"); U@_dm/;0& String sProperty = "bytes="+nStartPos+"-"; EUD~CZhS"k httpConnection.setRequestProperty("RANGE",sProperty); ,
pDnRRJ! Utility.log(sProperty); %p^wZtm 8=B|C'> :DrWq{4 InputStream input = httpConnection.getInputStream(); `w#Oih!6A| //logResponseHead(httpConnection); "pi=$/RD9 +7D|4 0=@?ob7 byte[] b = new byte[1024]; C%$edEi int nRead; [')m|u~FS4 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) "CSsCA$/ { #^lL5= nStartPos += fileAccessI.write(b,0,nRead); QUq_:t+Dv //if(nThreadID == 1) L[oui,}_ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); D.B.7-_8 } s@&`f{ 'y;EhOwj, sT 3^hY7 Utility.log("Thread " + nThreadID + " is over!"); -BrMp%C bDownOver = true; _E &A{HkJ //nPos = fileAccessI.write (b,0,nRead); `18qbot } [;4g catch(Exception e){e.printStackTrace ();} m,*QP* } nt 81Bk= } $UMFNjL
Ygm`ZA y eJF5n# //打印回应的头信息 a,@]8 r-" public void logResponseHead(HttpURLConnection con) >:A ARx% { XX7{-Yy for(int i=1;;i++) {@H6HqD { yzbx . String header=con.getHeaderFieldKey(i); FOv=!'So if(header!=null) *W4m3Lq //responseHeaders.put(header,httpConnection.getHeaderField(header)); 9_# >aOqL Utility.log(header+" : "+con.getHeaderField(header)); [pC$+NX else 3c#BKHNC break; %+@O#P } ypbe!Y<i] } m!|kW{B#A nW PF6V> _GXk0Ia3` public void splitterStop() j~2{lCT { 5gb|w\N> bStop = true; [.O?Z=5a[V } YZL kL26[ .f*4T4eR- ,~a QL } [;r)9mh7 9=vMgW WKts[Z /* bZnuNYty75 **FileAccess.java mC4zactv *//文件访问(定位,写) e}D3d=6` package NetFox; S@jQX import java.io.*; K,Ef9c/+K :8L8q<U chcbd
y>C public class FileAccessI implements Serializable{ 14Xqn8uOW dT`D:)*: //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 6CV*
Z\b RandomAccessFile oSavedFile; |jQ:~2U| long nPos; @)UZ@ ~R 8ZM?)#`@{ 5m*iE*+ public FileAccessI() throws IOException :}Xll#.,m { j| v%)A this("",0); v0
nj M } Upc+Ukw fL_4uC i\ wg7V-+@i public FileAccessI(String sName,long nPos) throws IOException zcel|oz) { @GBxL*e oSavedFile = new RandomAccessFile(sName,"rw"); Sc>,lIM this.nPos = nPos; S'|,oUWDb oSavedFile.seek(nPos); bV(Y`g } ujDd1Bxf? C\S3Gs _K`wG}YIE public synchronized int write(byte[] b,int nStart,int nLen) $*SW8'],` { AJf4_+He int n = -1; 00G%gQXk, try{ Vr )<\h oSavedFile.write(b,nStart,nLen); b=g8eMm n = nLen; GQ t8p[! } gD,1 06% catch(IOException e) O-ew%@_ { H2&@shOOQJ e.printStackTrace (); LM$W* } I(]}XZq 98j>1"8 ~T ]m>A! return n; 88VZR&v } O,J>/
8J=?5 .Obw|V- } xe#FUS
3 u5O+1sZ"6 GS0;bI4ay /* o}$XH,-9& **SiteInfoBean.java aK&b{d */ W,4QzcQR package NetFox; '= _/ 1F*q NiWa7 /Hr ;'?l$
._ public class SiteInfoBean { kjW+QT?T& ZO!I. Qt iDTr private String sSiteURL; //Site's URL <A[E:*`* private String sFilePath; //Saved File's Path ~"!]
3C,L private String sFileName; //Saved File's Name :H7D~ n private int nSplitter; //Count of Splited Downloading File "JVkVp[5D+ ks3`3q 7 TMAJb+@l: public SiteInfoBean() l,R/Gl {//nSplitter的缺省值为5 XxT#X3D/," //default value of nSplitter is 5 qd9c I& this("","","",5); vqnw#U4` } Ipf|")* Da&vb
D-Bg ,LTH;<zB) public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) VGfMN|h { @x9a?L.48 sSiteURL= sURL; 0Oi,#]F sFilePath = sPath; `k=bL"T>\ sFileName = sName; {FO;Yg' this.nSplitter = nSpiltter; E'v_#FLvR {kp-h2I, q`|LRz&al } x9$` W _.>QEh5"5 2{]`W57_= public String getSSiteURL() #,S0HDDHn { P::TO-C return sSiteURL; 9iXeBC } G3{Q"^S" rFIqC:= BS /G("oZ[ public void setSSiteURL(String value) ^g*pGrl# { 4oK?-|=? sSiteURL = value; .clP#r{U } guX
9} W@ T~ly;e* /+8JCp
public String getSFilePath() $iI]MV%= { QBtnx[ return sFilePath; l=]cy-H } aY3^C q(r v$~QU{& ?;KKw* public void setSFilePath(String value) lwHzj&/ ~ { +)k b( sFilePath = value; UUSq$~Ct } _ 6O\W%it bnm
P{Ps D Gr>
2 public String getSFileName() BsBK@+ZyI { yN~dU0.G6! return sFileName; ^w(p8G_-w } s<*XNNE7 7bqBk,`9 7]^M># public void setSFileName(String value) (>F%UY { SLO%7%>p sFileName = value; 6Ca(U' } C2@,BCR Ol1e/Wv =6woWlf b public int getNSplitter() F4It/ { 4?0vso*X<: return nSplitter; ">~.$Jp_4 } 7Ok;Lt!x 2}YOcnB .nG#co"r}3 public void setNSplitter(int nCount) SPN5dE.@ { "vXxv'0\f nSplitter = nCount; Tg!i%v(-t } xG}(5Tt } !O-T0O I'PeN0T
f F_Z- 8>P /* ;} und*q **Utility.java kdCUORMK */ fYp'&Btb]x package NetFox; @[5xq J%x6 xm%Um\Pb7 public class Utility { JXCCTUO "[vu6 `m? y|CP;:f; public Utility() EPS={w$'s { W.z;B< ~vs}.kb QF{4/y^j{ } %{YN70/ ;w'D4p= P //线程睡眠 [`p=(/I&L public static void sleep(int nSecond) MxWy*|J} { bSsh^Z try{ *\=.<|H Z Thread.sleep(nSecond); ~GTz:nC* } h]og*( catch(Exception e) 4$qWiG~ { ELBa}h; e.printStackTrace (); ,z3{u162 } "J+3w } ~2<7ZtV= ]d,S749(s //日志 >2~+.WePu public static void log(String sMsg) uvtF_P/ { u`y><w4i System.err.println(sMsg); J\d3N7_d } %FXfqF9 ObLly%|i I"Ms-zs public static void log(int sMsg) #?q&r_@@ { j;s"q]"x] System.err.println(sMsg); !6s"]WvF } b'J'F;zh> } /DQc&.jK M%1}/!J3 Q>/C*@ /* A/s>PhxV **TestMethod.java D<8HZ%o */ AK\$i$@6 package NetFox; +|bmT AgV G`q >y.%xK public class TestMethod { R&|mdY8 t<~ $ D|rFu public TestMethod() dY@WI[yog { ///xx/weblogic60b2_win.exe uwa~-xX6 try{ vJ\pR~? SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 0@G")L
Ue0 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); b7 !Qn} SiteFileFetch fileFetch = new SiteFileFetch(bean); r`AuvwHPs[ fileFetch.start(); 6b%WHLUeT } ^xh}I5 catch(Exception e){e.printStackTrace ();} .mDM[e@' /I)yU>o Q2zjZC*'% } }
@K FB `D`sr[3n [[>wB[w public static void main(String[] args) I4i2+
*l} { *g y{] new TestMethod(); j7sKsbb } 0G7K8`a } u}!@ ,/) 点击下载更多相关资料
|