-
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
|
/* _ShWCU-~Z **SiteFileFetch.java 'qG-)2
t */ ox\D04:M package NetFox; R>&8%%# import java.io.*; \P"Ol\@ import java.net.*; y!rJ}e Z( "-7_ w8: public class SiteFileFetch extends Thread { 5:5d=7WX ^
uwth <Ter\o5% SiteInfoBean siteInfoBean = null; //文件信息Bean <9:~u]ixt long[] nStartPos; //开始位置 %BT]h3dcSS long[] nEndPos; //结束位置
^^n (s_g FileSplitterFetch[] fileSplitterFetch; //子线程对象 $b7@S`5 long nFileLength; //文件长度 f#7=N{wm boolean bFirst = true; //是否第一次取文件 bR:hu}YS boolean bStop = false; //停止标志 O
9M?Wk
: File tmpFile; //文件下载的临时信息 DWCf+4 DataOutputStream output; //输出到文件的输出流 yOAC<<Tzus Mc(|+S@w' //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) nZ#u#V public SiteFileFetch(SiteInfoBean bean) throws IOException
3Z`
wU { voTP,R[}85 siteInfoBean = bean; [f[Wz{Q#Y //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); M"qS#*{ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Y}Dk>IG if(tmpFile.exists ()) ?4aW^l6/ { %q9"2]
cR bFirst = false; -yBj7F| read_nPos(); h^1!8oOYD } ^|hVFM2 else SkCux { m~P30) nStartPos = new long[bean.getNSplitter()]; =w"Kkj>%oh nEndPos = new long[bean.getNSplitter()]; =*zde0T?l } Q7d@+C y7rT[f/J s aHY9{) p&)d]oV> } kd]CV7(7 iC>%P&|-)| 7fS NF7/+ public void run() Of$R+n. { V\]j^$ //获得文件长度 {X_I>)Wg //分割文件 qHo Hh //实例FileSplitterFetch a'n17d& //启动FileSplitterFetch线程 d+ZXi' //等待子线程返回 \1n (Jr.< try{ 9Nx%Sdu if(bFirst)
]w$cqUhM { \d]Y#j< nFileLength = getFileSize(); $<&_9T#&w if(nFileLength == -1) G%zJ4W% { UWK|_RT6SA System.err.println("File Length is not known!"); kCoE;)y$ } _IV!9 JL else if(nFileLength == -2) q"DHMZB { z}Us+>z+jc System.err.println("File is not access!"); #T{)y } ^Oeixi@f else v]H9`s#, { MA}}w& for(int i=0;i<nStartPos.length;i++) X%N!gy { PBFpV8P, nStartPos = (long)(i*(nFileLength/nStartPos.length)); &5z9C=]e } 6X?:mn'%QF for(int i=0;i<nEndPos.length-1;i++) H8HVmfM { ?UOaqcL nEndPos = nStartPos[i+1]; /` nkz } ]sE)-8 nEndPos[nEndPos.length-1] = nFileLength; piuM#+Y\'S } H!OX1F } &
BY\h: %4V$')rek kt\,$.v8 //启动子线程 26 1? 8&c fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Oo FMOlb.Z for(int i=0;i<nStartPos.length;i++) q4G$I?4 { X Z3fWcw[ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6%:~.ZfN siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 'Nuy/\[{\ nStartPos,nEndPos,i); P{:Z xli0 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 2mMi=pv9 fileSplitterFetch.start(); ,=c(P9}^ } 1CSGG'J]E // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ]\oT({$6B siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); {.[EX MX // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", G-K{ nEndPos = " + nFileLength); mh`uvqY // fileSplitterFetch[nPos.length-1].start(); ur=:Ha zxH<~2 0 z]H= //等待子线程结束 JP5en //int count = 0; _8F;-7Sz //是否结束while循环 R$A%Zh6 boolean breakWhile = false; W=LJhCpRHj |!7leL =1(7T.t while(!bStop) suW|hh1/Ya { :F#^Q%-IS write_nPos(); 7#oq|5 Utility.sleep(500); 3/uvw>$ breakWhile = true; LHu ja/wI'J< 8faT@J'e; for(int i=0;i<nStartPos.length;i++) $<C",& { !<VP[%2L~ if(!fileSplitterFetch.bDownOver) 2Ub-ufkU { Li0+%ijM breakWhile = false; l{ql'm break;
98^7pa } j6$@vA) } _3wK: T{: if(breakWhile) i+< v7?:`# break; T<b*=i /vi Ic
%= ~Cw7.NA{3 //count++; A{k1MA<F6 //if(count>4) < 3*q) VT // siteStop(); NjA[(8\: } UJ%.KU%Q} f8=qnY2j G(Hr*T% System.err.println("文件下载结束!"); v.vkQQ0[9 } +ZiYl[_| catch(Exception e){e.printStackTrace ();} m .(\u?J } m_Z(osoE#W u^c/1H:6 )Y'g; //获得文件长度 Ui9;rh$1eU public long getFileSize() eT5IL(mH { H\ E%.QIx int nFileLength = -1; ?"<m {,yQI try{ C.LAr~P URL url = new URL(siteInfoBean.getSSiteURL()); M5d EZ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); -MsL>F.] httpConnection.setRequestProperty("User-Agent","NetFox"); Qt_KUtD ad47 42 NV?XZ[<*< int responseCode=httpConnection.getResponseCode(); -)Vy)hD, if(responseCode>=400) ZqpK}I { c=bK_Z_ processErrorCode(responseCode); V>E7!LIn. return -2; //-2 represent access is error c&wiTvRV } Nge@8 C?]eFKS." #.fJ
M:"tG String sHeader; _s5FYb# #Cy3x-! )+8r$ i for(int i=1;;i++) +|8.ymvm { ZG#:3d*) //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Vkd_&z7 //Utility.log(in.readLine()); c9Cc%EK sHeader=httpConnection.getHeaderFieldKey(i); xx7&y!_ if(sHeader!=null) k $8Zg*) { YO?o$Hv16 if(sHeader.equals("Content-Length")) :sLg$OF { x>BFK@# nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); )b=vBs`% break; K7(k_4 } >hq{:m } Y"KJ`Rx else &b*v7c=o break; 4${3e
Sg_ } _5(p=Zc } wL>*WLfR catch(IOException e){e.printStackTrace ();} #2:?N8vz* catch(Exception e){e.printStackTrace ();} #Z
`Tk)u/ 5WxNH}{ iyr8*L\ Utility.log(nFileLength); 99By.+~pX )\2KDXc /38I(0 return nFileLength; V lO^0r^z } FV
aC8Kw QHUFS{G] 3&{6+ A //保存下载信息(文件指针位置) 'W54 T private void write_nPos() F s=x+8'M { vkR~nIp try{ !Y7$cU &
output = new DataOutputStream(new FileOutputStream(tmpFile)); y!R9)=/M output.writeInt(nStartPos.length); 4MW oGV9 for(int i=0;i<nStartPos.length;i++) fl9VokAT { \+Y=}P> // output.writeLong(nPos); ;pOV; q3j output.writeLong(fileSplitterFetch.nStartPos); KD+&5=Y output.writeLong(fileSplitterFetch.nEndPos); Bj><0
cNF } Iw(
wT_ output.close(); b2[U3)|oO } #DJZ42 catch(IOException e){e.printStackTrace ();} T3"'`Sd9; catch(Exception e){e.printStackTrace ();} F:jtzy" } 9xw"NcL %Ny1H/@Q1+ H_x}- //读取保存的下载信息(文件指针位置) V:P]Ved private void read_nPos() ;qbK[3. { "zTy_0[; try{ [P ;fv DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); f2SJ4"X int nCount = input.readInt(); 4@<wN \' nStartPos = new long[nCount]; xE!0p EHd nEndPos = new long[nCount]; +\&6Zbn for(int i=0;i<nStartPos.length;i++) ~=[5X,Ta { U#iW1jPE2 nStartPos = input.readLong(); @]2aPs} }6 nEndPos = input.readLong(); 'o0o.&/= } yIngenr$ input.close(); xSlgq|8 } 2|B@s3a catch(IOException e){e.printStackTrace ();} /%p
~ catch(Exception e){e.printStackTrace ();} }''0N1,/ } Lpkx$QZ $XMpC{ a$^)~2U{ private void processErrorCode(int nErrorCode) Pw7uxN` { P,WQN[(+ System.err.println("Error Code : " + nErrorCode); <}8G1<QZ'. } S0:Oep k&f/f $E^sA|KcT //停止文件下载 ,%xat`d3,3 public void siteStop() N2[j By8M { bDh4p]lm bStop = true; C Q iHk for(int i=0;i<nStartPos.length;i++) UukY9n];] fileSplitterFetch.splitterStop(); noa+h<vGb 7SYe:^Dx 2h*aWBLk } )T
gfd5B } 7p':a) //负责部分文件的抓取 . a @7 **FileSplitterFetch.java mSu$1m8 */ *& );-r`. package NetFox; Sw-2vnSdM Z>Rshtg <6+B;brh import java.io.*; *9=}f;~ import java.net.*; CW8YNJ' AU%Yr6 5?
Y(FhnIC public class FileSplitterFetch extends Thread { /@&o%I3h :]Om4Q\-# =B;qy7? String sURL; //File URL P~:^bU^F7 long nStartPos; //File Snippet Start Position z~p!7q&g long nEndPos; //File Snippet End Position 7^! zT int nThreadID; //Thread's ID Xg_l4!T_l boolean bDownOver = false; //Downing is over iY2q^z/S boolean bStop = false; //Stop identical q^wSM FileAccessI fileAccessI = null; //File Access interface Hi~)C \ G^K;+& T 4Jc~I public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Bt$,=k { _<c}iZv@ this.sURL = sURL; .:Wp9M this.nStartPos = nStart; `<<9A\Y-f this.nEndPos = nEnd; >>C
S8 nThreadID = id; zlQBBm;fE fileAccessI = new FileAccessI(sName,nStartPos);//定位 3%o}3.P,:@ } Lp|n)29+du y,n.(?!* xpuTh"ED public void run() eA?|X| { T7/DH while(nStartPos < nEndPos && !bStop) eA
Fp<2g { x]%,?Vd? Gkfzb>_V] ~/aCzx~ try{ j)iUg03>/4 URL url = new URL(sURL); \/Q~C! HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); M($GZ~ b%A httpConnection.setRequestProperty("User-Agent","NetFox"); v6uRzFw
String sProperty = "bytes="+nStartPos+"-"; 0ZI}eZA j httpConnection.setRequestProperty("RANGE",sProperty); y>u|3:z Utility.log(sProperty); 7!Im|7Ty ttlMZLX{TJ Y@MxKK uj InputStream input = httpConnection.getInputStream(); UM21Cfqex //logResponseHead(httpConnection); kqo4
v;r :2vuc!Pu i7 YUyU byte[] b = new byte[1024]; OR|Jc+LT int nRead; b~)2`l while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) E|_8#xvb { c`lL&*] nStartPos += fileAccessI.write(b,0,nRead); z}$.A9yn //if(nThreadID == 1) [GI2%uA0 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); sVmqx^- } -*T0Cl. KZ AF9 ta x:9j|~ Utility.log("Thread " + nThreadID + " is over!"); Lrr(7cH, bDownOver = true;
eIlovq/X //nPos = fileAccessI.write (b,0,nRead); LZs'hA<L } oGg<s3;UND catch(Exception e){e.printStackTrace ();} ]EDCs?, } L
9cXgd } mC0Dj O i=P}i8,^= THK^u+~LM //打印回应的头信息 w&VDe(:~ public void logResponseHead(HttpURLConnection con) TPKD'@:x { (./Iq#@S for(int i=1;;i++) 8+Gwv
SDU { >T0`( #Lm String header=con.getHeaderFieldKey(i); #(+V&<K if(header!=null) z_{_wAuY //responseHeaders.put(header,httpConnection.getHeaderField(header)); fF9hL3h?) Utility.log(header+" : "+con.getHeaderField(header)); Vl<7> else ~P~q' break; OmfHrlA } S-7 C'dc } pbWjTI $ c_.Fe'E i?eVi public void splitterStop() % hH> % { Up_"qD6 bStop = true; T;PLUjp} } -'*<;]P+. }:J-o "K+EZ%~< } \&Bdi6xAy 9GTp};Kg 3%Q9521 /* #@1( **FileAccess.java 4HGS *//文件访问(定位,写) STg}
Z package NetFox; "i*gJFW| import java.io.*; V(io!8, itc\wn %S$$*|_G public class FileAccessI implements Serializable{ })J}7@VPO # Oq.}x?i //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 |*-<G3@ RandomAccessFile oSavedFile; <viC~=k; long nPos; >XM]UdP :Y9/} b{ IAe/) public FileAccessI() throws IOException qss)5a/x. { $ye>;Ek this("",0); x_C0=Q|K3 } d:#tN4y7(
cJTwgm? tL<.B public FileAccessI(String sName,long nPos) throws IOException w
$`w { ^7=7V0>,: oSavedFile = new RandomAccessFile(sName,"rw"); '^$+G0jv this.nPos = nPos; WA:r4V oSavedFile.seek(nPos); KU]o=\ak% } P46Q3EE
?gjx7TQ? v#X#F9C public synchronized int write(byte[] b,int nStart,int nLen) .`v%9-5v
{ ja&m-CFK int n = -1; E'SDT*EI try{ "J+4 oSavedFile.write(b,nStart,nLen); %so{'rQl n = nLen; ?0+g.,9 } e:C4f catch(IOException e) nf1 `)tXG { 0!$y]Gr e.printStackTrace (); vP? T } @_#\qGY n}(A4^=4KQ K1]3zLnS return n; *-Vr=e<8 } %yk_(3a o[+t}hC[ wArfnB& } 6f
?,v5 Vry_X2 HSAr6h /* 6h %rt]g **SiteInfoBean.java wp>
z04
*/ $b53~ package NetFox; r`h".=oD ~<s^HP2U{ S'hUh'PZ public class SiteInfoBean { *yjnC /4+(e I7 0 ]L
private String sSiteURL; //Site's URL ^M;#x$Y? private String sFilePath; //Saved File's Path #h4FLF_w private String sFileName; //Saved File's Name ]6A wd A private int nSplitter; //Count of Splited Downloading File ZKpJc'h ('Uj|m}9 t*)mX2R, public SiteInfoBean() VYO1qj {//nSplitter的缺省值为5 lCl5#L9 //default value of nSplitter is 5 w&Gc#-B this("","","",5); }N$f=:iI } EUQtl_h/H d)acWF\ /!MKijI public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) &;L=f; { ^w<aS
w sSiteURL= sURL; L/]
(pXEp sFilePath = sPath; X ,^([$ sFileName = sName; Pt/]Z<VL this.nSplitter = nSpiltter; lI.oyR' uN>5Eh&=Pf h8(>$A- } Pw thYy 0\B{~1(^ 0_MtmmL. public String getSSiteURL() d%-/U!z? { %d(= > return sSiteURL; 8"ZS|^#
} .5}Gt>4XM 57gt"f 4K?
\5(b public void setSSiteURL(String value) JPng !tvR { 8UqH"^9.Q7 sSiteURL = value; xSSEDfq } tpO'<b 7C,giCYU y)CvlI public String getSFilePath() [A"=!e$< { GdVF; return sFilePath; jY]51B } Gsb^gd N)R5#JX *L$_80 public void setSFilePath(String value) " r o'? { 1
ptyiy sFilePath = value; [0]A-#J } ZILJXX4 "* F`,I3 ~QxW^DGa7] public String getSFileName() B%MdJD> { pq&[cA_w return sFileName; K%x]:|,>M } IM/xBP x-X~'p'f BI %XF
9{ public void setSFileName(String value) #u8#<
,w { 9q_{_%G% sFileName = value; #ye`vD } ?6`B;_m kROIVO1|` {ilz[LM8( public int getNSplitter() N!3Tg564j { z8JW iRn return nSplitter; F@f4-NR> } -D'XxOI Bdb}4X rL >V27#L2:J public void setNSplitter(int nCount) AD?XJ3 { R]&Csr#~ nSplitter = nCount; e(|Z<6 } -bHlFNRm } /(51\RYkir 'hs4k|B PS+~JwD Uc /* 4YikC **Utility.java 4\
Xaou2V[ */ -$[&{.B. package NetFox; 1Z @sh>X| s_VcC_A 9*ZlNZ
public class Utility { >$L7J=Em 2tpu v(H; ^4^N} 7>5 public Utility() Q+9:]Bt { ".(vR7u' D_czUM \WE&5
9G } ~U"m"zpLP &s vg<UZ //线程睡眠 bHv"! public static void sleep(int nSecond) ?{B5gaU9F { p8%qU>~+4 try{ n-" (~ Thread.sleep(nSecond); ka\{?:r,8 } W3/bM>1 catch(Exception e) $KGMAg/H { dVEs^ZtI e.printStackTrace (); eDZ8F^0 } \?T9v } zHX\h[0f Jl`^`Yv //日志 =zK4jiM1 public static void log(String sMsg) 4hwb]
Yz { J#F5by%8 System.err.println(sMsg); *0!p_Hco } Hf]:mhH 9AX}V6\+ n2B%}LLa public static void log(int sMsg)
1?FG3X 5 { DMG~56cTO, System.err.println(sMsg); /ta}12Z } A%W]XEa<
} )PP yJ@M 8e*skL K%\r[NF /* yT@Aj;X0v **TestMethod.java h'
!C */ ?0qD(cfx< package NetFox; pS ](Emn`. :) lG}c
|di(hY| public class TestMethod { S=!WFKcJR <7\j\` i3N{Dt public TestMethod() 3u/JcU-< { ///xx/weblogic60b2_win.exe [StnKQ?"wz try{ HdqB B SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); K_)~&Cu*' //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); qsep9z. SiteFileFetch fileFetch = new SiteFileFetch(bean); VRQ`-# fileFetch.start(); c.IUqin } znsQ/[ catch(Exception e){e.printStackTrace ();} w8 :[w %%s)D4sW 9efey? z } S9Yzvq!( 3d6z_Yd: ITw *m3 public static void main(String[] args) W<X3!zuKSg { $kTm"I new TestMethod(); x:MwM? } s"=TM$Vb } 8c)GUx 点击下载更多相关资料
|