-
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
|
/* ;q:jl~ **SiteFileFetch.java ]ix!tb.Q */ @"o@}9=d package NetFox; kWNV%RlSx import java.io.*; &[At`Nw71 import java.net.*; 1?| flK SL,p36N 2e|N@j
& public class SiteFileFetch extends Thread { :<Fe =L C:SFzF 5*0y7K/D SiteInfoBean siteInfoBean = null; //文件信息Bean XEdzpkB long[] nStartPos; //开始位置 {U84 _Pi long[] nEndPos; //结束位置 U-:ieao@ FileSplitterFetch[] fileSplitterFetch; //子线程对象 )x]3Zq long nFileLength; //文件长度 4T?h boolean bFirst = true; //是否第一次取文件 sYdRh?Hq boolean bStop = false; //停止标志 |=EZ1<KzD File tmpFile; //文件下载的临时信息 in(U:04 DataOutputStream output; //输出到文件的输出流 zLF?P3^ KL ?@@7 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) :Dd$i_3= public SiteFileFetch(SiteInfoBean bean) throws IOException +n7?S~R$ { \'M3|w`f siteInfoBean = bean; ~u.T- 0F //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 11,!XD*" tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); efD)S92 if(tmpFile.exists ()) %%Qo2^- { 5l,ZoB8 bFirst = false; Fh*j#*oe read_nPos(); ]q6;#EUr? } [|lB5gi4t! else ]I L;`>Gp { 7^M9qTEHp nStartPos = new long[bean.getNSplitter()]; F
{B\kq8 nEndPos = new long[bean.getNSplitter()]; +z9gbcx } 7#~+@'Oe t#S<iBAZ ay
%KE=*v <&!v1yR } 7Su#Je] *A~
G_0B /5#rADOS public void run() <HRBMSR+ { 2 QNNp:`6 //获得文件长度 i@][rdhT //分割文件 o=RM-tR`v //实例FileSplitterFetch T2D<UhP //启动FileSplitterFetch线程 5P .qXA"D //等待子线程返回 >j{z> try{ 6&!&\ if(bFirst) &*s0\
8 { 4Td{;Y="yF nFileLength = getFileSize(); :aG#~-Q if(nFileLength == -1) 5'Q|EIL { .>(Q)"v System.err.println("File Length is not known!"); 1RKW2RCaW_ } :0/q5_t else if(nFileLength == -2) siTX_`0 { c,Euv>*` System.err.println("File is not access!"); vm'5s]kdh } @ w>zF/ else WsFk:h'r { up2+s# for(int i=0;i<nStartPos.length;i++) (Z}>1WRju { nkv(~ej( nStartPos = (long)(i*(nFileLength/nStartPos.length)); @vMA=v7a } kqb0>rYa for(int i=0;i<nEndPos.length-1;i++) 9
C{;h { 4G@nZn nEndPos = nStartPos[i+1]; \j2;4O?` } h b/]8mR nEndPos[nEndPos.length-1] = nFileLength; [I:KpAd/
} y}v+c%d } &vovA} F HK)cKzG[s! {T'GQz+R" //启动子线程 KI]wm fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; yIb,,!y9{ for(int i=0;i<nStartPos.length;i++) \]9.zlB { @R m-CWa fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), D{v8q)5r siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), `p'Q7m2y/b nStartPos,nEndPos,i); 7n o5b]
\ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); XM<KF&pVB fileSplitterFetch.start(); x"4} isp< } ez3Z3t` // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(),
Ke-)vPc siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); kGkA:g: // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Y:ldR nEndPos = " + nFileLength); `imWc"'Ej // fileSplitterFetch[nPos.length-1].start(); a{[+<8=@1 .P$IJUYO I5AO?BzJ //等待子线程结束 T<-=nX //int count = 0; ?4CNkk=v //是否结束while循环 Cv)/7vyB8 boolean breakWhile = false; (]*H[)F/ z^nvMTC NA$zd( while(!bStop) 0lM{l? { jxgj,h"}9` write_nPos(); 8wH.et25k Utility.sleep(500); NDO\B,7 breakWhile = true; K1?Gmue#I -S%x
wJKM <P%}|@ for(int i=0;i<nStartPos.length;i++) '<iK*[NW { qEUT90 if(!fileSplitterFetch.bDownOver) ._z'g_c( { QMo}W{D breakWhile = false; qW_u break; Q>qFM9Z } CJaKnz } 3ew8m}A{O if(breakWhile) fU2qrcVu break; +]:2\TTGI *FR$vLGn RQW6N??C //count++; 5~XN>>hp //if(count>4) W2-=U@ // siteStop(); gLE7Edcp6V } _U|7'^ | Xj+q~4{|vt =\,
qP System.err.println("文件下载结束!"); KyP)Qzp } %m{U&
-(l@ catch(Exception e){e.printStackTrace ();} kJs^ z } 5wC* ?>/ ]>i~6!@ lo&#(L+2 //获得文件长度 W&"|}Pi/ public long getFileSize() .wrL3z_ { n
uQM^2 int nFileLength = -1; :Zw@yt try{ !SHj$Jwa' URL url = new URL(siteInfoBean.getSSiteURL()); 7@%'wy&A HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _L.n, httpConnection.setRequestProperty("User-Agent","NetFox"); % 0:p)Z0 vOI[Z0Lq9h -m 5}#P89 int responseCode=httpConnection.getResponseCode(); RAs0]K if(responseCode>=400) C.!_]Pxs { ALd;$fd qf processErrorCode(responseCode); \'?#i@O return -2; //-2 represent access is error oh#N
0
0X } >x:EJV fvo<(c#Y# fn{S
"33" String sHeader; J?:[$ C5 )wzV
$(~ 7q9gngT1LA for(int i=1;;i++) !{_yaVF { x;BbTBc> //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 9vGs; //Utility.log(in.readLine()); f%qt)Ick sHeader=httpConnection.getHeaderFieldKey(i); HO|-@yOF^ if(sHeader!=null) xcCl
(M]+ { |E/L.gdP7 if(sHeader.equals("Content-Length")) 7_KhV { (d2@Mz nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); q$ghLGz break;
r@)A
k } zz$q5[n } &;q<M_< else NSLVD[yT break; v$|mo;6 } \94j rr } J>S3sP catch(IOException e){e.printStackTrace ();} %.x@gi q catch(Exception e){e.printStackTrace ();} h!]"R<QQdu X.|Ygx v1[_}N9f>H Utility.log(nFileLength); 3-wD^4)O, {0jIY d}0qJoH4 return nFileLength; &y_? rH } V/#v\*JHFc \ a-CN> Fq,N //保存下载信息(文件指针位置) o#i
]" private void write_nPos() nf%4sIQ*x { |DG@ht try{ +/'<z output = new DataOutputStream(new FileOutputStream(tmpFile)); )q?$p9 output.writeInt(nStartPos.length); z)L}ECZh9 for(int i=0;i<nStartPos.length;i++) Q2'eQ0W{o { M StX*Zw // output.writeLong(nPos); 7|D|4!i2Y output.writeLong(fileSplitterFetch.nStartPos); L-'k7?%( output.writeLong(fileSplitterFetch.nEndPos); sB*o)8 } MR9/Y:Nm output.close(); D,W\ gP/h% } hFb
fNB3 catch(IOException e){e.printStackTrace ();} w{7ji} catch(Exception e){e.printStackTrace ();} )@PnTpL* } m3
IP7h' !QC<n/ ;lfWuU%R //读取保存的下载信息(文件指针位置) 0o/B{|rv private void read_nPos() |+ 7f2C { Q)6va}2ai try{ #Q6w+" DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); =Lw3
\5l int nCount = input.readInt(); 3XVk#)lw nStartPos = new long[nCount]; I"Q<n[g0' nEndPos = new long[nCount]; ua& @GXvZ for(int i=0;i<nStartPos.length;i++) z%2w(&1 { Kmry=`=A nStartPos = input.readLong(); !]DuZ= nEndPos = input.readLong(); )bW<8f2 } X=_Z(;<& input.close(); kO3`54 } H@!#;w catch(IOException e){e.printStackTrace ();} D9,!
%7i catch(Exception e){e.printStackTrace ();} &:vscOl } )A83A<~ #MM&BC IRB& j%LA private void processErrorCode(int nErrorCode) %-^}45](q { g,?\~8-c System.err.println("Error Code : " + nErrorCode); *wUdC } @l,{x|00 _g6wQdxT |zMqJ.qu //停止文件下载 Y+|PY?
~ public void siteStop() 0BC`iql5 { Mvof%I bStop = true; NWISS for(int i=0;i<nStartPos.length;i++) 6&],WGz fileSplitterFetch.splitterStop(); 9s
$PrF KM5 JZZP ec'tFL#u{ } 9.8,q } DT? m/* //负责部分文件的抓取 F$ {4X /9n **FileSplitterFetch.java SI_?~Pf3k */ 7\/u& package NetFox; I@PJl ,8`O7V{W #:W%,$9\P import java.io.*; A}4t9|/K6 import java.net.*; C"No5r'K3 +!$dO'0nt, :@e\'~7sH public class FileSplitterFetch extends Thread { %c0z)R~ 2?1}ZXr 22IYrk String sURL; //File URL %MNk4UsV long nStartPos; //File Snippet Start Position ^Jtl;Q long nEndPos; //File Snippet End Position "`]'ZIx[R/ int nThreadID; //Thread's ID PN9^[X boolean bDownOver = false; //Downing is over Ut;'Gk boolean bStop = false; //Stop identical z@`@I FileAccessI fileAccessI = null; //File Access interface U$09p;~$Ww >Fh#DmQ x vJ^@w' public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 5ZUy: { >W~=]&7{s4 this.sURL = sURL; J" wKR y this.nStartPos = nStart; {e6KJ@H6 this.nEndPos = nEnd; &G=0 nThreadID = id; =BW9/fG fileAccessI = new FileAccessI(sName,nStartPos);//定位 dqwWfn1lt } iE+6UK u2,H ]- E@]sq A public void run() (olLB { TPqvp|~2 while(nStartPos < nEndPos && !bStop) pg5&= {
r4S=I k) 3s? \d$Rd")w try{ f~v"zT URL url = new URL(sURL); b\M b*o HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); a'^0.1 httpConnection.setRequestProperty("User-Agent","NetFox"); |P~q/Wff String sProperty = "bytes="+nStartPos+"-"; u!u5g.Q httpConnection.setRequestProperty("RANGE",sProperty); _M&{^d Utility.log(sProperty); h;}ODK(. }(cY| l }+Cdy9> InputStream input = httpConnection.getInputStream(); 5])8qb/F //logResponseHead(httpConnection); *sAOpf@M ytob/tc 'M
lXnHxt byte[] b = new byte[1024]; k?n]ZNlT int nRead; #O><A&FrF` while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) s%bUgO%& { U~hCn+0 nStartPos += fileAccessI.write(b,0,nRead); pNSst_!> //if(nThreadID == 1) L3g9b53\ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); V:QdQ;c } ?AT(S A_]D~HH y*
rY~U#3 Utility.log("Thread " + nThreadID + " is over!"); TL]bY'% bDownOver = true; Bf+^O)Ns^ //nPos = fileAccessI.write (b,0,nRead); YjL
t&D:IZ } W`5a:"Vg catch(Exception e){e.printStackTrace ();} [Q=4P*G}X } m"q/,}DR } }eI`Qg CCn/ udp@ e-jw^
//打印回应的头信息 " C&x,Ic public void logResponseHead(HttpURLConnection con) IF^[^^v+H { xLZMpP5c for(int i=1;;i++) @,GjeF]! { .2/,XwIr String header=con.getHeaderFieldKey(i); QWQ!Ak if(header!=null) WySNL#>a //responseHeaders.put(header,httpConnection.getHeaderField(header)); 4xp j< Utility.log(header+" : "+con.getHeaderField(header)); G6<HO7\ else J/=
+r0c break; q1P :^<[ } =J`gGDhGY- } >Rr!rtc'x qZ233pc vD_u[j] public void splitterStop() {q})kO { i5Eeg`NMl bStop = true; F],TG&>5 } _J` |<}?t; >
Z]P]e #*+;B93) } 7
s7}?l9 ,R8n,az x{~_/;\p3 /* e{:86C!d) **FileAccess.java '}@e5^oL *//文件访问(定位,写) A}gYcc85Z package NetFox; AVU7WU{ import java.io.*; zv`zsqDJ (2cGHYU3N< +J%6bn)U public class FileAccessI implements Serializable{ %;'~%\|dZM 2$iw/r //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 QZ#3Bn%B5 RandomAccessFile oSavedFile; @h!U long nPos; cxL,]27Bu s87 a% %C6|-?TAd public FileAccessI() throws IOException m9%yR"g9 { {`tHJ|8 this("",0); vY4WQbz( } 0PR4g}" l.sm~/ -6(h@F%E public FileAccessI(String sName,long nPos) throws IOException 5sG ]3z+1 { ]aREQ?ma&z oSavedFile = new RandomAccessFile(sName,"rw"); *X%?3"WH8 this.nPos = nPos; L,f^mX0< oSavedFile.seek(nPos); D`1I;Tb# } Ml'bZLwq FpwlV}: [SKP|`I>I public synchronized int write(byte[] b,int nStart,int nLen) $_ST:h&C { " vv$%^ int n = -1; B8`R(vu; try{ t)YFTO"Jj oSavedFile.write(b,nStart,nLen); PY[Sz=[ n = nLen; hgF21Oj9 } \x3^ catch(IOException e) J11dqj { Pw0{.W~r e.printStackTrace (); kt;}]O2%R } s4^[3|Zrr0
Iz 1*4@ Sr4dY`V*:z return n; Uyz;U34 oI } _HSTiJVr 8 h55$j mMel,iK= } $_4oN(WSz \Sz4Gr0g3Z V22q*/iV /* ---Ks0\V **SiteInfoBean.java BnY\FQ)K */ V5hp
Y ] package NetFox; ?FkQe~FN{ N:m@D][/sW JrY"J]/ public class SiteInfoBean { k#{lt-a/ 9\\@I
=; ~nLkn#Z private String sSiteURL; //Site's URL f'7d4 private String sFilePath; //Saved File's Path .Y=Z!Q private String sFileName; //Saved File's Name K8e4ax private int nSplitter; //Count of Splited Downloading File ]L5Z=.z& AJJ%gxqGq EKeBTb public SiteInfoBean() 3 C E 39W {//nSplitter的缺省值为5 F]dmc,Q //default value of nSplitter is 5 UXcH";*9b this("","","",5); >[A65q' } u *#-7 GQEI f$ A>rW Go.{E public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) EZgxSQaPH { (h'$3~ sSiteURL= sURL; [wXwKr sFilePath = sPath; /6Jy'"+'0 sFileName = sName; 4]|9!=\
this.nSplitter = nSpiltter; ~ wJ3AqNC? wj5qQ]WC 2zmQp } S)Ub/`f{s b |o`Q7Hj yg-L^`t+B5 public String getSSiteURL() x
mrugNRg { WrIL]kJw^ return sSiteURL; 6Zl.Lh } 8AC.2v?_ =:ya;k& ,?7xb]h public void setSSiteURL(String value) e0G}$
as { lEVQA*u[ sSiteURL = value; 'p|Iwtjn> } oF 1W}DtA khKv5K#) O>tC]sm% public String getSFilePath() gKm@B{rC { U_N5~#9 return sFilePath; 7Y_fF1-wY } m=("N Sm*Jysy` HL}sqcp public void setSFilePath(String value) o[Wagg.% { G{&yzHAuae sFilePath = value; O=!)})YG } 5;sQ@ jx5[bUp4u b}}1TnS) public String getSFileName() ^J*G%* { o\=i0HR9 return sFileName; ib""Fv7{ } q|Pt>4c5? eD`
, f2SU5e2 public void setSFileName(String value) %FR^[H] { XeIUdg4>R sFileName = value; 'o#J>a~!9L } AD!<%h: + 8K1]'t$ ac+k 5K+ public int getNSplitter() G2[IO $ { SCt=OdP= return nSplitter; }?Yr>ZRi } JtrDZ;^@
]L%R[Z!3 &[2Ej|o public void setNSplitter(int nCount) x(/@Pt2B { SceCucT nSplitter = nCount; 7gdU9c/q, } KWn1 %oGJ } &xiDG=I# DESViQM LGo@F;!n /* +~i+k~{`H **Utility.java X
gx2 */ ~y-vKCp| package NetFox; !7"K>m< 5qtmb4R~ EV?47\~ public class Utility { ZR01<V R6WgA@Z|r ah!O&ECh public Utility() ]zwqG A { *|,ykb> w;SH>Ax: |q.:hWYFpM } rJc)<OZjT G=bP<XF //线程睡眠 8HRPJSO~g public static void sleep(int nSecond) pJ*#aH[ySP { Mn }Z9S[ try{ ("JV:u.L+ Thread.sleep(nSecond); 1J{z}yPHc } gt t$O catch(Exception e) w#G=Z_Tt { _AFt6\ e.printStackTrace (); eDM0417O( } !qw=I( } ~q_+;W. @y\{<X.F\1 //日志 h@m n
GE public static void log(String sMsg) }fZ=T4r { moJT8tb System.err.println(sMsg); y'2kV6TtqD } 64\5v?C :@@A 1-NX>E5 public static void log(int sMsg) dj'8x48H2W { l;Wy,?p System.err.println(sMsg); ,<P[CUD&& } *A1TDc$ } }jY[| >z #!d^3iB2 R$;&O.
5M /* YT(1
"{: **TestMethod.java xm10 */ % 6hw package NetFox; Y7t{4P C}P
\kDM ?'/5%f` public class TestMethod { ox=7N{+`J , w'$T) ~h^}W$pO public TestMethod() if!`Qid { ///xx/weblogic60b2_win.exe ;`PkmAg try{ n\"LN3 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); >wS:3$Q //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); E#2k|TpH4 SiteFileFetch fileFetch = new SiteFileFetch(bean); `w=H'"Zv fileFetch.start(); dK;\`>8 } .kKwdqO+zB catch(Exception e){e.printStackTrace ();} ~!d)J ,S0~:c:) Mm7n?kb6 } q}F%o0 vB YT)S CygV_q public static void main(String[] args) L,A-G"z0Z {
pOI`,i}. new TestMethod(); 6p=x gk-q } u r.T YKF } y"
6~9j 点击下载更多相关资料
|