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/* Fb9!x/$tGV **SiteFileFetch.java Z 361ko} */ \w\{x0u package NetFox; E8s&.:;+ import java.io.*; yUzpl[*e^o import java.net.*; 2[R{IV8e XKt">W j=~c(
B public class SiteFileFetch extends Thread { s j{i 0755;26Bx ^+20e3 ~Y SiteInfoBean siteInfoBean = null; //文件信息Bean z}:|is)? long[] nStartPos; //开始位置 W4~:3Sk long[] nEndPos; //结束位置 yC]X&1,:z FileSplitterFetch[] fileSplitterFetch; //子线程对象 T,eP&IN long nFileLength; //文件长度 w0iv\yIRQ boolean bFirst = true; //是否第一次取文件 }- P
='AyL boolean bStop = false; //停止标志 }+4^ZbX+: File tmpFile; //文件下载的临时信息 WfDpeXdO DataOutputStream output; //输出到文件的输出流 Eax^1 |6 xVn"xk //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) }+1Y>W7q public SiteFileFetch(SiteInfoBean bean) throws IOException Y}pCBw { ~@wM[}ThP$ siteInfoBean = bean; |nFg"W //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); }+fMYgw tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); uYv"5U]MFv if(tmpFile.exists ()) |3A/Og { G$B( AWL bFirst = false; &eHhj9 read_nPos(); 8(EK17rE` } D+ )R_ else SXW8p>1Jw { 30fsVwE2 nStartPos = new long[bean.getNSplitter()]; 1dy>a=W nEndPos = new long[bean.getNSplitter()]; _*I@ J/ } }
:@s EGZF@#N cx(aMcX6 lStYfO:<'v } F( w ?x|8"*N .1[[Y} public void run() #=G[~m\ { $H9+>Z0( //获得文件长度 wm$1LZ8o-` //分割文件 c<`Z[EY(t //实例FileSplitterFetch i+2fWi6Z+ //启动FileSplitterFetch线程 Z*}5M4 //等待子线程返回 =X0"!y" try{ q^e4 if(bFirst) 0
s-IW { Y 7a<3> nFileLength = getFileSize(); YR2Q6}xR if(nFileLength == -1) L|7F%oR { +$hqwNh@Z@ System.err.println("File Length is not known!"); LG0z|x(
} bvf}r
,`Q7 else if(nFileLength == -2) Jzg>Y?jN R { J;K-Pv+ System.err.println("File is not access!"); |hp_<F9. } Kd?TIeF E else #+vIq? { =
h
_>OA for(int i=0;i<nStartPos.length;i++) f__r" N { yA8e"$ nStartPos = (long)(i*(nFileLength/nStartPos.length)); y|BRAk&n } 'w?*4H for(int i=0;i<nEndPos.length-1;i++) 9!u=q5+E { DriJn`vtzq nEndPos = nStartPos[i+1]; Oie0cz:>: } qP"+SVqC nEndPos[nEndPos.length-1] = nFileLength; !$/1Q+ } ? 1OZEzA! } l(EDe 1}moT# xQ[~ c1 //启动子线程 ionFPc]. fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; As&=Pb9 for(int i=0;i<nStartPos.length;i++) 0w0\TWz* { mgIB8D+6 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), wA+QUN3#n siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 7oj
^(R, nStartPos,nEndPos,i); G:W4<w Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); u&q RK>wLa fileSplitterFetch.start(); .?L&k|wX- } .eg?FB'7 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), d|^cKLu siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); uSeRn@ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", h]wahExYP nEndPos = " + nFileLength); ]SqLF!S(= // fileSplitterFetch[nPos.length-1].start(); ,]1oG=`3v ^sLnKAN :L~{Q>o //等待子线程结束 pzX684 //int count = 0; =Kq/EDe //是否结束while循环 3?x4+b boolean breakWhile = false; [0M2`x4` 4fK(<2i > 3<P^-9L while(!bStop) ^6tcB* #A { l98.Hb7 write_nPos(); huMNt6P[ Utility.sleep(500); fOE8{O^W breakWhile = true;
X2X.&^ *Y4h26 I9sx*' for(int i=0;i<nStartPos.length;i++) |T!^&t { 9ANC,+0p if(!fileSplitterFetch.bDownOver) aq'dC=y { ikr|P&e#u breakWhile = false; qH3<,s* break; G+k[. } mN5`Fct*A> } WD wW` if(breakWhile) <78]OZ] Z break; 'S_kD! BO KC+C?]~M 80PlbUBb! //count++; aNZJs<3;'D //if(count>4) mcbr3P // siteStop(); / v";u) } aBo8?VV]8 S >E|A% 4>q^W $ System.err.println("文件下载结束!"); PV_E3,RY } q1 :Y]Rbe catch(Exception e){e.printStackTrace ();} G~,K$z/-l } (~YFm"S ?{bF3Mz= $
O1w6\}_ //获得文件长度 I\NiA>c public long getFileSize() Q.5C$I { h'{}eYb+ int nFileLength = -1; +&LzLF.bK try{ pEUbP,3M: URL url = new URL(siteInfoBean.getSSiteURL()); ]<9=%m HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); VieX5 httpConnection.setRequestProperty("User-Agent","NetFox"); O>zPWVwa I y?_2m F-!,U)
int responseCode=httpConnection.getResponseCode(); 7qfo%n" if(responseCode>=400) X!+#1NPM { vmI2o'zi processErrorCode(responseCode); h@{U>U7 return -2; //-2 represent access is error MA\^<x_?L} } 71AR)6<R ;D Mv?-H yN*HIN String sHeader; E,6(/`0H* D`nW9i7 Yg 8AMi for(int i=1;;i++) 2ckAJcpEb/ { d/Q}I[J.u //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); J(BtGGU' //Utility.log(in.readLine()); 19 h7 M sHeader=httpConnection.getHeaderFieldKey(i); A>;Q<8rh if(sHeader!=null) *? /9lAm { ^i3~i?\,P if(sHeader.equals("Content-Length")) K".\QF,: { +Eil:Jz nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ~n)!e#p break; C$X
)I~M } +\SNaq~& } OiB*,TWV else ;#np~gL break; zd)2@jX= } %w
<59d6 } E?c)WA2iH catch(IOException e){e.printStackTrace ();} Da#|}m0> catch(Exception e){e.printStackTrace ();} (*63G4Nz\ W~15[r0 D- )jmz>R Utility.log(nFileLength); Lod$&k@@ q6Q;9 , 9N(<OY+Dgm return nFileLength; Dq/ _#&S }
FA 1E`AdU LOY+^ U#oe8(?# //保存下载信息(文件指针位置) 3y!yz3E private void write_nPos() ;Qpp[V` { S~WsGLF s try{ P0m;AqS#R output = new DataOutputStream(new FileOutputStream(tmpFile)); ]h0Fv-[A output.writeInt(nStartPos.length); b6Jv|1w' for(int i=0;i<nStartPos.length;i++) z/bJDSQ { #u8|cs! // output.writeLong(nPos); jr@u output.writeLong(fileSplitterFetch.nStartPos); )|>LSKTEl output.writeLong(fileSplitterFetch.nEndPos); gi::?ET/. } \>0F{-cR$ output.close(); pdnkHR$ } Xg*IOhF6x catch(IOException e){e.printStackTrace ();} lk $S"OH! catch(Exception e){e.printStackTrace ();} A1xY8?#?~c } )A]E:]2 ygm4A j> h.Cr;w,2R //读取保存的下载信息(文件指针位置) 0{ovLzW private void read_nPos() *uYnu|UQH { q2VQS1R`8 try{ 'jp nQcwxx DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); OtuOT=% int nCount = input.readInt(); H-%)r&"vn nStartPos = new long[nCount]; MF>1u% nEndPos = new long[nCount]; ?>lvV+3^` for(int i=0;i<nStartPos.length;i++) u@SE)qg { ajy.K'B* nStartPos = input.readLong(); >SJ#
rZ nEndPos = input.readLong(); 8Rq+eOP=S } <fX]`57Dc` input.close(); }{*((@GY} } Wx}+Vq<q catch(IOException e){e.printStackTrace ();} Lu&2^USTO catch(Exception e){e.printStackTrace ();} &wj;: f } ,RFcR[ak lhm=(7Y wAE,mw private void processErrorCode(int nErrorCode) m
ys5B} { =re1xR!E5 System.err.println("Error Code : " + nErrorCode); YH`/;H=$G/ } Gy36{* CFJ F}aW zn5 //停止文件下载 x1)G!i public void siteStop() O`e0r%SJ { DJ"O`qNV3 bStop = true; t?^C9(;6 for(int i=0;i<nStartPos.length;i++) s MAc+9G9k fileSplitterFetch.splitterStop(); htbN7B( dbGW`_zQ4 }?B=R#5 } \nV|Y=5 } t5h]]TOz //负责部分文件的抓取 %-@`| **FileSplitterFetch.java Wt+aW */ PezUG{q( package NetFox; Yck(Fl E^S[8= jnFCtCB import java.io.*; B\&;eZY'G import java.net.*; Vm]ltiTVk P>%\pCJ]) =p>"PqJ/7n public class FileSplitterFetch extends Thread { 8XwAKN:f uV<I!jyI 2U,O
e9 String sURL; //File URL G.K3'^_ long nStartPos; //File Snippet Start Position <Gzy*1Q& long nEndPos; //File Snippet End Position @L|X('i int nThreadID; //Thread's ID 'UO,DFq[Fl boolean bDownOver = false; //Downing is over ywlN4= boolean bStop = false; //Stop identical 7G}vQO FileAccessI fileAccessI = null; //File Access interface 0N.tPF} Mn+;3qo{6 BDY@&vF public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 1E!0N`E { N$J)Ow this.sURL = sURL; T{u!4Yu this.nStartPos = nStart; dwks"5l this.nEndPos = nEnd; }*l V nThreadID = id; ~I6Er6$C^ fileAccessI = new FileAccessI(sName,nStartPos);//定位 >jAr9Blz] } NUBzm nA>8 0`/ PEK{ vrXmzq public void run() D1bS=>
;," { #V[?puE@ while(nStartPos < nEndPos && !bStop) POTW+Zq] { |E-0P=h N!DAn\g k;:v~7VF try{ ~*-ar 6 URL url = new URL(sURL); UwY <3ul HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 'X{cDdS^ httpConnection.setRequestProperty("User-Agent","NetFox"); L'4ob4r{L String sProperty = "bytes="+nStartPos+"-"; F.?`<7 httpConnection.setRequestProperty("RANGE",sProperty); Oy[1_qfP Utility.log(sProperty); }.|\<8_ ,LZ6Wu$P L1*P<Cb InputStream input = httpConnection.getInputStream(); ^pMjii8IZ //logResponseHead(httpConnection); _GK^ 7}u Q17"hO>kC \/4ipU. byte[] b = new byte[1024]; &|P@$O> int nRead; N]: "3?% while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) v,r}q1.E} { XhFa9RC nStartPos += fileAccessI.write(b,0,nRead); ke|v|@ //if(nThreadID == 1) 94%gg0azp // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); I jN3 jU } ';??0M e;pVoRI hu\HK81m Utility.log("Thread " + nThreadID + " is over!"); bJe*J\){ bDownOver = true; <5/r //nPos = fileAccessI.write (b,0,nRead); h{.KPK\ } qie7iE`o catch(Exception e){e.printStackTrace ();} AY:3o3M } 8 f%@:}H } ` 1DJwe2 2;%DE<Z )F&@ M;2p' //打印回应的头信息 =If % m9 public void logResponseHead(HttpURLConnection con) C1P{4 U { 7P9n.
[ for(int i=1;;i++) 1Nw&Z0MI { ?UQVmE& String header=con.getHeaderFieldKey(i); ^4]#Ri=U if(header!=null) *x[B g]/ //responseHeaders.put(header,httpConnection.getHeaderField(header)); N+l~r]: & Utility.log(header+" : "+con.getHeaderField(header)); 0.O pgv2K else JY0t Hs break; Jl&bWp^3 } `|wH= } 0IBVR,q :gY$/1SYD C<fWDLwYqV public void splitterStop() F1R91V| { 5/DTE:M< bStop = true; k);z}`7 } 8,YF>O& Y\BB;"x1 Ri4_zb } UT [7 J m\7-/e2a #h ;j2 /* WM: ~P$%cx **FileAccess.java 2 8SlFu? *//文件访问(定位,写) rui}a=rs package NetFox; [e3|yE6 import java.io.*; -'JTVfm. ;|w &n !$AVlMnJ public class FileAccessI implements Serializable{ \^;Gv%E Q l%7wrK //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 F^_d8=67h RandomAccessFile oSavedFile; /V~L:0% long nPos; mLk@&WxG 0{v? 9 f-T>} public FileAccessI() throws IOException swG^L$r` { xj{X#[q): this("",0); "Na9Xea } O 4N_lr~ J><O
51 L;nRI. public FileAccessI(String sName,long nPos) throws IOException 52m^jT Sx { ?Li^XONz oSavedFile = new RandomAccessFile(sName,"rw"); a%tm[Re this.nPos = nPos; `NXyzT`:K oSavedFile.seek(nPos); dpZ7eJ } sxgR;gf6 _XXK1H x 7EY~5U/4 public synchronized int write(byte[] b,int nStart,int nLen) \bQ|O7s { 7;;W{W% int n = -1; ro@Zbm;P try{ #i ?@S$ oSavedFile.write(b,nStart,nLen); N$pwTyk n = nLen; H24g+<Tv } POH>!lHu catch(IOException e) qS&PMQ"$ { U`FybP2R~ e.printStackTrace (); WeuV+}\b } `m3@mJ!>\ 90sM S]a V==' 7n return n; FtM7+>Do. } z"}k\B-5 Sx;zvc c/;t.+g } Lj *FKP\{ ol!o8M%Q KblOP{I /* kjaz{&P **SiteInfoBean.java n#z^uq|v */ |GK [I package NetFox; ^eM=h 1GOa'bxm lx$Y-Tb^F public class SiteInfoBean { \^Y#"zXo1 Ep 5lmzg vlyq2>TfR private String sSiteURL; //Site's URL (n" ) private String sFilePath; //Saved File's Path P7egT,Z private String sFileName; //Saved File's Name n,PHfydqX private int nSplitter; //Count of Splited Downloading File ]~?k%Mpw MFW?m,It) E>4#j
PK public SiteInfoBean() ~pzaX8! {//nSplitter的缺省值为5 W:(:hT6`j9 //default value of nSplitter is 5 MF 5w.@62X this("","","",5);
@KOa5-u } 82$By]Y9 yl 0?Y {6 #3` public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) x ?^c:`. { $nn~K sSiteURL= sURL; <g*rTqT' sFilePath = sPath; M|n)LyL sFileName = sName; %M}zi'qQ? this.nSplitter = nSpiltter; rFx2S /4_}wi\ *N>Qj-KAM_ } =7e8N&-nv .Z_U]_( GbP!l;a public String getSSiteURL() /2FX"I[0V% { P?9CBhN return sSiteURL; EHzZ9zH\ } '/sc `(`:0 m9L+|r H~ks"D1 public void setSSiteURL(String value) _Fz)2h,3 { Ku&(+e sSiteURL = value; e3S6+H),I } ++dV5 5@0c@Q uFok'3!g7% public String getSFilePath() @J r { #m$H'O[WG\ return sFilePath; G!rcY5!J } \&TTe8 E32z(:7M `/ HygC6 public void setSFilePath(String value) 3_h%g$04s { z?
{#/ sFilePath = value; z9D2,N. } (XW#,=rYk spl*[ d 9&d BL0 public String getSFileName() Ey6K@@% { %1=W#jz return sFileName; 2X*epU_1h } xDQ$Ui. qHKZ5w Yt#($}p public void setSFileName(String value) ko5\*!|:lj { 8p5'}Lq sFileName = value; VqbiZOZ@ } +\W"n_PPy >^ Y9p~ PN'8"8`{ public int getNSplitter() RF;N]A?* { yjSN;3t71 return nSplitter; -"cN9RF } Ee|@l3) >N,G@{FR CD[7h public void setNSplitter(int nCount) VLO>{"{' { :?p{ga9 nSplitter = nCount; ScTqnY$v } \;?\@vo< } t{7l.>kf b~Ruhi[E m_Rgv.gE^ /* R80R{Ze **Utility.java y&CUT:M6 */ 9.@(& package NetFox; jqLyX $bo^UYZ6 ^s?wnEo;j public class Utility { O[`Ob6Q{F tS9m8(Hr%Q 7'8O*EoB' public Utility() -m@s
9k { 1]<!Xuk^f 9F-k:hD | W+eN%w5 } ms{R|vU%b oF>GWstTR //线程睡眠 E??%)q public static void sleep(int nSecond) C=]3NB>Jc { =;`YtOL try{ w %zw+E Thread.sleep(nSecond); 6,7omYof } U=t'>;(g catch(Exception e) VsmL#@E { +sI.GWQ_: e.printStackTrace (); 3K{8sFDO } P$QjDu- } x3P@AC$\ _kd |:, //日志 *Q>:|F[vM public static void log(String sMsg) "5YdmBy { LBE".+ System.err.println(sMsg); k|_2aQ02 } $"i690 vqs~a7E-P ,,J3 h public static void log(int sMsg) C1/jA>XW { O<3,n;56Z System.err.println(sMsg); Y;w]u_ } }-vBRY } y(dS1.5F +doT^&2u* \PFx#
:-c /* |W <:rT **TestMethod.java /Ow?nWSt */ k$c
j|-< package NetFox; 'l:2R,cP "uCQm ' A!D:Kc3
public class TestMethod { -b$OHFL caP |z'?3?,~ public TestMethod() j+9
S { ///xx/weblogic60b2_win.exe 64lEB>VNm try{ eTc`FXw` SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); v2{O67j}
o //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); !.9vW&t SiteFileFetch fileFetch = new SiteFileFetch(bean); =F&RQ}$ fileFetch.start(); <C77_t } Q7r,5w&cm catch(Exception e){e.printStackTrace ();} 7j:{rCp3J gp HwiFc p5l$On } ?a%i|Z7! 4I*Mc%dD Q.1ohj0) public static void main(String[] args) 62jA { wDO5Zew! new TestMethod(); q?L(V+X } _);Kb/ } Elp!,(+&6 点击下载更多相关资料
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