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/* CI,-qi **SiteFileFetch.java 9> |rIw */ 83dOSS2 package NetFox; !xlVyt5e import java.io.*; @.5Ybgn import java.net.*; HCP Be2 +V) (,f1 NZ_45/(dx public class SiteFileFetch extends Thread { X2{3I\'Ft f="}. \h
yTcFb SiteInfoBean siteInfoBean = null; //文件信息Bean 6(z.(eT long[] nStartPos; //开始位置 g5cR.]oz long[] nEndPos; //结束位置 c" l~=1Dr FileSplitterFetch[] fileSplitterFetch; //子线程对象 !=-l760 long nFileLength; //文件长度 Wc)^@f[~< boolean bFirst = true; //是否第一次取文件 0+L5k!1D boolean bStop = false; //停止标志 Y8P File tmpFile; //文件下载的临时信息 NO<myN+N DataOutputStream output; //输出到文件的输出流 []Z6<rC| "ZH1W9A //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) A ^~\ public SiteFileFetch(SiteInfoBean bean) throws IOException ^yX
W.s { UeVF@rw siteInfoBean = bean; H'Po //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Q:-/@$&i tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); rg
$71Ir if(tmpFile.exists ()) K<t(HK#[ { 9/'j<v6M bFirst = false; :c6%;2 read_nPos(); _[<I&^% } ;[|x5o/< else xv)7-jlx { 5Ph"*Rz% nStartPos = new long[bean.getNSplitter()]; G1D(-X4ALZ nEndPos = new long[bean.getNSplitter()]; @P8q=j}l9 } 3(CUC dx~F [ T"2ye9a l@^RbF[' } h\yYg' CC yn7n m7eO T public void run() yeW|Ux: { tkd2AMkh! //获得文件长度 6h5*b8LxA //分割文件 Yu8WmX,[ //实例FileSplitterFetch v"s}7trWV //启动FileSplitterFetch线程
SI@I //等待子线程返回 SmRU!C$A try{ $u` ;{8 if(bFirst) (;s\Ip0 { pE=wP/# nFileLength = getFileSize(); I5-/KVWb if(nFileLength == -1) 79i>@u% { +tuC845 System.err.println("File Length is not known!"); ov|s5yH8e } _)p% else if(nFileLength == -2) :@pmgp { Yc9 M6=E^ System.err.println("File is not access!"); =n;ileGm+^ } ]A_)&`"Cb else `T}e3l { ;KnnAZJ for(int i=0;i<nStartPos.length;i++) wD*_S}] { c|I{U[(U nStartPos = (long)(i*(nFileLength/nStartPos.length)); Ble <n6 } ^*Ca+22xO for(int i=0;i<nEndPos.length-1;i++) "--rz;+K { Qs~;?BH& nEndPos = nStartPos[i+1]; d,$[633It} } [t0gX dU6 nEndPos[nEndPos.length-1] = nFileLength; @O4m-Oosi } ~(FyGB} }
l_$~~z ~ MF=@PE][ TG'A'wXxy //启动子线程 vZ|m3;X fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; h v9s for(int i=0;i<nStartPos.length;i++) Z>o20uA { A/GEDG
? fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), dGZVWEaPfx siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), xH*OEzN nStartPos,nEndPos,i); \<V{6#Q= Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); vk{dL' fileSplitterFetch.start(); IUI>/87u } )=8X[<^i // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), HSyohP8 7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); <Y9ps`{}: // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ;c~6^s`2 nEndPos = " + nFileLength); w!tQU9+* // fileSplitterFetch[nPos.length-1].start(); HHT K{X+ 0hCJovSG% MX
qH //等待子线程结束 ,p0R4gi //int count = 0; O'o` //是否结束while循环 2v yB[( boolean breakWhile = false; ]yA|
m3^2 [O9(sWL' L1M]ya!l while(!bStop) C$Ldz=d { 389T6sP] write_nPos(); ?GX5Pvg Utility.sleep(500); pX|\J>u) breakWhile = true; mG\,T3/* 7w YSP&$ ;,4 Z5+ for(int i=0;i<nStartPos.length;i++) [\eUCt F { Hz!+g'R!Gs if(!fileSplitterFetch.bDownOver) zN*/G6>A {
;OE{& breakWhile = false; Peh(*D{ break; 1u'x|Un } }G_ i+ } @4_W}1W if(breakWhile) hP,SvN#!2 break; tk2B\}6 Hk(w\
5fSDdaO //count++; 3Ud&B //if(count>4) {b8!YbG // siteStop(); !G Z2|~f9 } tihb38gE +.mIC:9 A<QYW,:| System.err.println("文件下载结束!"); l&^9<th } CSR6 catch(Exception e){e.printStackTrace ();} :$j!e#?= } 0q>f x (SU*fD!t ?7YX@x //获得文件长度 [AfV+$ public long getFileSize() R1\cAP^0 { (+q?xwl!N int nFileLength = -1; z@{|Y;s try{ LPvyfD;Zy URL url = new URL(siteInfoBean.getSSiteURL()); G]=U=9ZI HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4cTJ$" v httpConnection.setRequestProperty("User-Agent","NetFox"); 'w^1re=R Z#3wMK~ DbH{;
Fb int responseCode=httpConnection.getResponseCode(); Wi'BX#xCB if(responseCode>=400) gXE'3 { ?so3Kj6H processErrorCode(responseCode); 2u~0B +)K/ return -2; //-2 represent access is error hm&{l|u{RU } P)tX U j}X4#{jgC hSQP
'6 String sHeader; |Gzd|$%Oq kZWc(LwA p}}}~ lC/ for(int i=1;;i++) L/c$p`- { ec)G~?FH //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); YEF%l'm(\ //Utility.log(in.readLine()); 0/#XUX 4 sHeader=httpConnection.getHeaderFieldKey(i); {(7Dz*0 if(sHeader!=null) F
C2oP, { Q{Jz;6" if(sHeader.equals("Content-Length")) 9 %,_G. { Mw\/gm_3 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ;#G>q o break; '.#KkvE## } d9R0P2 } (|I0C 'Ki else fFqK.^Tn break; {MO`0n;
rt } q}M^i7IE } AA^3P?iD
catch(IOException e){e.printStackTrace ();} s^AQJ{X catch(Exception e){e.printStackTrace ();} hOO)0IrIM* XaR(q2s ahhVl=9/ao Utility.log(nFileLength); `g6ZhG:W |*Z'WUv WvAl!^{` return nFileLength; R
=mawmQ2 } H
\.EKZ Z@t).$ (=)+as"u9* //保存下载信息(文件指针位置) ZBJ.dK?Ky| private void write_nPos() IgLP=mqcWK { 8Nd + try{ z
}R-J/xr2 output = new DataOutputStream(new FileOutputStream(tmpFile)); 4<ER
dP7"- output.writeInt(nStartPos.length); V.1sb
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for(int i=0;i<nStartPos.length;i++) sog?Mvoq { f]J?-ks // output.writeLong(nPos); aS'G&(_ output.writeLong(fileSplitterFetch.nStartPos); z=?ainnKx output.writeLong(fileSplitterFetch.nEndPos); #Ru+|KL } x*}(l%[ output.close(); 2a (w7/W: } x|F6^d
catch(IOException e){e.printStackTrace ();} Jn'q'+ catch(Exception e){e.printStackTrace ();} fx99@%Ii } RgRyo
|uj1T=ZY (|(Y;%>-v //读取保存的下载信息(文件指针位置) QI0ARdS private void read_nPos() /+JCi6{sHS { RLw=y{%p try{ P]yER9' DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); wrK$ZO] int nCount = input.readInt(); qWw@6VvoQ nStartPos = new long[nCount]; o7DDL{iR/ nEndPos = new long[nCount]; dK|MQ < for(int i=0;i<nStartPos.length;i++) No=f&GVg { h'MX{Wm. nStartPos = input.readLong(); [9'5+RXw3 nEndPos = input.readLong(); ;yBq'_e3 } m-, ' input.close(); rnmWw# } d0MX4bhZ catch(IOException e){e.printStackTrace ();} y?_tSnDK catch(Exception e){e.printStackTrace ();} Y0&w;P } 4JU#3 &7E 0H{ K*7*`6iU private void processErrorCode(int nErrorCode) |os2@G$ { ~AjbF(Ad System.err.println("Error Code : " + nErrorCode); @#*B|lHE } Y49kq} ?# ,\, XL EA|# //停止文件下载 wUh'1D<(r public void siteStop() ;#~rd8Z52 { SY>N-fW\H: bStop = true; q^"P_pV\ for(int i=0;i<nStartPos.length;i++) 57K1e~^ fileSplitterFetch.splitterStop(); *`|.:' @<>](4D ~qFi0<-M } `9zP{p } IB(IiF5 //负责部分文件的抓取 5IVASqYp **FileSplitterFetch.java dkG-Yz~ */ kIU"-;5tP package NetFox; i]8zZRe 6l:CDPhR J[VQ6fD% import java.io.*; T(J&v|FK import java.net.*; Bi?.G7> F'pD_d9]e .6e5w1r63 public class FileSplitterFetch extends Thread { R0oP##] AL
H^tV? k3S**&i!CR String sURL; //File URL \-V long nStartPos; //File Snippet Start Position >"zSW? long nEndPos; //File Snippet End Position XImb"7| int nThreadID; //Thread's ID 4;w_o9o boolean bDownOver = false; //Downing is over z Lf^O%zN boolean bStop = false; //Stop identical gmJJ(}HVz FileAccessI fileAccessI = null; //File Access interface 9.vHnMcq L|!9%X0. R^%7| public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException (Q#A Br8 { D$#=;H
, this.sURL = sURL; h7gH4L!'u this.nStartPos = nStart; L.+5`& this.nEndPos = nEnd; @-!w,$F)%d nThreadID = id; QVzLf+R~ fileAccessI = new FileAccessI(sName,nStartPos);//定位 JK[7&C-O } m(*CuM[E F
=d L#@^ ywi
Shvi8 public void run()
(nvSB}? { }v=q6C#Q> while(nStartPos < nEndPos && !bStop) |`:Uww+3 { XXxX;xz$ oBAD4qK {#>@h7 try{ '3%!Gi!g URL url = new URL(sURL); LB 2
2doW HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ,+zLFQC0@ httpConnection.setRequestProperty("User-Agent","NetFox"); 8M(N String sProperty = "bytes="+nStartPos+"-"; NpH)K:$#% httpConnection.setRequestProperty("RANGE",sProperty); )Bd+jli|s Utility.log(sProperty); Wc-P= J*m F?5kl/(" 1wGd5>GDA InputStream input = httpConnection.getInputStream(); .`xcR]PQ //logResponseHead(httpConnection); 64b9.5Bn #l8CUg~Uj Ww)qBsi8 byte[] b = new byte[1024]; pS0-<-\R int nRead; KWN0$*4 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) @36^4E>h { G8akMd]2 nStartPos += fileAccessI.write(b,0,nRead); cZ^$!0 //if(nThreadID == 1) {7B$%G' // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ZaXK=%z } 7m@pdq5Ub iK=H9j 8oN4!#: Utility.log("Thread " + nThreadID + " is over!"); <f{m=Dc bDownOver = true; X o{Ce%L //nPos = fileAccessI.write (b,0,nRead); z\fD}`^8 } dtm_~r7~ catch(Exception e){e.printStackTrace ();} AB}Qd\ } 1sn!! } 1cOp"! `=%[ \!z=x#!O$ //打印回应的头信息 HHa7Kh|-H public void logResponseHead(HttpURLConnection con) j!m~ :D { .R biF for(int i=1;;i++) 1pO ;aG1O { 0#sk ]Qz String header=con.getHeaderFieldKey(i); I2K52A+ if(header!=null) J>X aQfzwU //responseHeaders.put(header,httpConnection.getHeaderField(header)); M}/%t1^g: Utility.log(header+" : "+con.getHeaderField(header)); YM+}Mmu else jwAO{.}T1r break; zXUE<\ } {TE0 } uTB;Bva sks_>BM D95$ public void splitterStop() A 7DdU NR { ^D oJ='& bStop = true; S,Zjol %p } $@8\9Y
{ rYN`u ,ulNap"R } J,m.LpY bis/Nfr] 69yTGUG3 /* Ob0=ZW`+& **FileAccess.java n'4D ;4 *//文件访问(定位,写) jCKRoao package NetFox; glk
I9~ import java.io.*; Ldir'FW Z4hP fVR ~PG0 public class FileAccessI implements Serializable{ )-9|3` NF&\<2kX //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 Dtd
bQF RandomAccessFile oSavedFile; K"-N:OV long nPos; ?:n{GK `Rj
i=k> /:awPYGH<1 public FileAccessI() throws IOException \Xxx5:qM { hw~cS7 this("",0); r\=p.cw< } >]C;sP F)DL/'; 9Cf^Q3)5o public FileAccessI(String sName,long nPos) throws IOException Kau*e8 { ;;l( oSavedFile = new RandomAccessFile(sName,"rw"); rw+0<r3|K this.nPos = nPos; T("Fh} oSavedFile.seek(nPos); V !FzVl=G } &Lq @af#
QW6k!ms$ 8yztV dh public synchronized int write(byte[] b,int nStart,int nLen) s/ZOA[Yux { Y>%A*|U% int n = -1; rRC3^X`u try{ $RA"NIZ:! oSavedFile.write(b,nStart,nLen); {-17;M$ n = nLen; g08=D$P } ;?n*w+6< catch(IOException e) Iun!rv { \N"K^kR4 e.printStackTrace (); vO4
&ZQ>6 } D4o? If4YqBG !L3Bvb;Q return n; ZU "y< }
Y`(I};MO L{gFk{@W {v]>sn;P1 } [$H8?J Ud{-H_m+ 'u696ED4 /* Bwll
[=_I **SiteInfoBean.java (G$m}ng */ 4&t6 package NetFox; x!"!oJG^k m41n5T` :;??!V public class SiteInfoBean { Bq:@ [pCQ lfI[r| 0/] @#G2 private String sSiteURL; //Site's URL 8E0Rg/DnT private String sFilePath; //Saved File's Path 3:=XU9p)x private String sFileName; //Saved File's Name rxDule3m private int nSplitter; //Count of Splited Downloading File @H{$,\\ Wm3H6o* G_AAE#r` public SiteInfoBean() $B$=,^)3 {//nSplitter的缺省值为5 w"l8M0$m //default value of nSplitter is 5 z*9/ "M this("","","",5); E+ 7S:B } 4AF"+L n+!.0d}6
~i
&K, public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) wkd591d* { uHf~KYL sSiteURL= sURL; Ap97 Zcw sFilePath = sPath; Y[x ^59 sFileName = sName; sO(K po9jq this.nSplitter = nSpiltter; JL(*peeu3 ec]ksw6T+ o[cKh7&+ } 7q67_u?@ \8t g7Sdq gE$dz#t. public String getSSiteURL() <o]tW4\(R { qc`_&!*D return sSiteURL; k|
jCc } r/{VL3}F_e Jk1Up2#B (p2\H>pTr public void setSSiteURL(String value) 2{#quXN9 { _nTjCN625 sSiteURL = value; iSsy_ | } n1cAI|ZE uvmNQg
S$$:G$j public String getSFilePath() $*@mxwMQ} { sJ0y3)PQ return sFilePath; >ZNL
pJQ } D(r|sw
goHr#@ Y.hrU*[J0 public void setSFilePath(String value) Vy5Q+gw { n"MFC sFilePath = value; 0`S!+d } p@Qzg
/X <4!w2vxG Y@r#:BH) public String getSFileName() TvQAy/Y0 { [6-l6W return sFileName; VK NCK } x[>A'.m@) g^]Q*EBa q,*IR*B:a public void setSFileName(String value) Ne#nSx5, { G;^iwxzhO sFileName = value; o?%x!m> } Z4(2&t^ P!vBS"S ~ib#x~Db public int getNSplitter() 6}|vfw { $OUa3!U_! return nSplitter; %`}Qkb/Lyh } rVN|OLh NuP@eeF>, ;=n7 Z public void setNSplitter(int nCount) HML6<U-eS { wo_FM
`@ nSplitter = nCount; %V+,# } ^Krkf4fO } ^%<v| Y(X X0U6: )pvZM? /* 2.NzB7c*CM **Utility.java i\<l&W */ i/$lOde package NetFox; p,4z;.s$ MDB}G
' l s_i)X public class Utility { OE[/sv '@W72ML. KS|$_-7u public Utility() ]ny(l#Hu: { vx
,yz+yP $rlIJwqn ?(|!VLu } !BY=HFT J[B8sa //线程睡眠 My[L3KTTp public static void sleep(int nSecond) 59ivL6=3 { F0|T%!FB>% try{ xp39TiXJ* Thread.sleep(nSecond); V]<dh|x } w5[POo' 5 catch(Exception e) j[z\p~^ { %_z]iz4 e.printStackTrace (); 7'o?'He-.2 } Y#Z&$&n } \l[5U3{ ;WzT"yW)T //日志 'shOSB public static void log(String sMsg) ]xS< \{og { SZ0Zi\W System.err.println(sMsg); 7O{\^Jz1 } lz>5bR' \twlHj4 MKH7d/x public static void log(int sMsg) Jsw<,uTD { *$s)p > System.err.println(sMsg); Zc"]Cv( } !^N/n5eoz } ZNx{7]=a g3qtWS 57oY]NT? /* =DqGm]tA **TestMethod.java T@z$g */ s_kI\w4(x1 package NetFox; xWlB!r<}Gz qD9B[s8 kg-%:;y. public class TestMethod { q| j;dI& 6\]-J*e> NeWssSje public TestMethod() 4RzG3CJdS { ///xx/weblogic60b2_win.exe k"n#4o: try{ 7kb`o
y;(^ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); fG.w;Aemv5 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ``O\'{o& SiteFileFetch fileFetch = new SiteFileFetch(bean); HPgMVp' fileFetch.start(); ~L1N1Z)Kk } <fyv^e catch(Exception e){e.printStackTrace ();} A#p@`|H#B 9\"~ G) :b
;5O3:B } f.u{;W !KF;Z|_(I &"CS1P| public static void main(String[] args) *yJb4uALB { [Z[)hUXE? new TestMethod(); %ZxKN ; } H37Z\xS } 3C[ ;2 点击下载更多相关资料
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