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/* FZ/&[;E! **SiteFileFetch.java l<6/ADuS */ 9hzU@m package NetFox; GUXX|W[6 import java.io.*; SQk!o{ import java.net.*; +[DVD 5+Ut]AL5 =)bc/309 public class SiteFileFetch extends Thread { i9"1 pn|{P<b\ `,"Jc<R7Z SiteInfoBean siteInfoBean = null; //文件信息Bean hn.fX:} long[] nStartPos; //开始位置 p,fin?nW c long[] nEndPos; //结束位置 >6q@Tr FileSplitterFetch[] fileSplitterFetch; //子线程对象 hT#mM*` long nFileLength; //文件长度 G7?EaLsfQ boolean bFirst = true; //是否第一次取文件 `rV,<
boolean bStop = false; //停止标志 hSH-Ck@Qy File tmpFile; //文件下载的临时信息 V
ZGhF!To DataOutputStream output; //输出到文件的输出流 g!uhy} {n'}S( //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 70~]J8T+u public SiteFileFetch(SiteInfoBean bean) throws IOException 7Cjrh"al" { S]m[$)U%@ siteInfoBean = bean; cs)hq4-L` //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); R,lr&;a8 tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); _6(=0::x if(tmpFile.exists ()) 40XI\yE_? { ^
z;pP bFirst = false; |QdS; read_nPos(); 9q?gmAn. } " B1' K8 else aHw VoT { s~CA
@ nStartPos = new long[bean.getNSplitter()]; lk|/N^8M nEndPos = new long[bean.getNSplitter()]; o^D{WH\p } -}s?!Pg> q I}Zg)q] joq
;N]S r|+Zni] } 2Xosj(H Uka4iya 9z#IdY$a public void run() = j - { qyto`n7 //获得文件长度 23PSv8;EM //分割文件 N~Gh>{N //实例FileSplitterFetch +;T%7j"wz //启动FileSplitterFetch线程 k6XO-a f //等待子线程返回 Q5ux**(Wr try{ PNq#o%q if(bFirst) eF9LZ"-s { =g ]C9'I3 nFileLength = getFileSize(); BLRrHaX0 if(nFileLength == -1) +_<#8v { *T3"U|0_ y System.err.println("File Length is not known!"); iZUBw } IKt9=Tx else if(nFileLength == -2) Ur@3_F { C/XOI> System.err.println("File is not access!"); |R4]( } ZISR]xay else uQDu<@5^[ { S"dQ@r9 for(int i=0;i<nStartPos.length;i++) r=vE0;7 { `
H"5nQRV nStartPos = (long)(i*(nFileLength/nStartPos.length)); rpvm].4 } eu~;G H for(int i=0;i<nEndPos.length-1;i++) 4P.ry|2 { ixp %aRRP nEndPos = nStartPos[i+1]; /w|YNDA]j } @{bf]Oc nEndPos[nEndPos.length-1] = nFileLength; hX^XtIC= } ka (xU#; } yO !*pC x@/!H<y N7NK1<vw2 //启动子线程 vt1!|2{
h fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; $h2h&6mH for(int i=0;i<nStartPos.length;i++) ;gF"o5/Q { zpY8w#b fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), I?1^\s#L siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 5EU3BVu&u nStartPos,nEndPos,i); wBr0s*1I Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); _H-Lt{k fileSplitterFetch.start(); 8.vD]hO } u+ -}| // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), dfNNCPu]+ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); #e=[W)) // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", F:\CDM=lS nEndPos = " + nFileLength); Ts.61Rx // fileSplitterFetch[nPos.length-1].start(); /u?^s "C/ RxAZ<8T_ Baq&>] //等待子线程结束 VlKWWQj //int count = 0; #
TvY*D, //是否结束while循环 &n['#7 <(! boolean breakWhile = false; 1>n@`M8} ZM\Z2L]n Mq-;sPsFP while(!bStop) -(Yq$5Zc& { d}Q;CF3m: write_nPos(); At"@`1n_u' Utility.sleep(500); 7%C6gU!r breakWhile = true; zh7NXTzyf yAaMYF@ `Os@/S for(int i=0;i<nStartPos.length;i++) "Ln)v { tX)^$3A if(!fileSplitterFetch.bDownOver) :
xW.(^(d { iOw'NxmY breakWhile = false; ,|D<De\v& break; "1Vuf<?C } y4+Km*am,W } I t",WFE. if(breakWhile) H}`}qu #~V break; ?m0|>[j %R." =5J}CPKbZI //count++; |pA3ZWm //if(count>4) kyMWO*>| // siteStop(); eX>x
+]l6 } 2{(_{9<>z 4~4D1 &Yb!j System.err.println("文件下载结束!"); )17CG*K1 } F@UbUm2o catch(Exception e){e.printStackTrace ();} Dwn.0|E } 3,t3\`= ^z)p@sk# D5^wT>3> //获得文件长度 p%[/
_ -7 public long getFileSize() kIrb;bZ+l { ?cF`T/z]" int nFileLength = -1; b"iPuN!p try{ NSI$uS6 URL url = new URL(siteInfoBean.getSSiteURL()); l$
^LY)i HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Qq+$ea?> httpConnection.setRequestProperty("User-Agent","NetFox"); Bq@_/*'*Y c&X2k\ ,v ,#f
. int responseCode=httpConnection.getResponseCode(); =#0f4z if(responseCode>=400) nHyqfd<V> { qjDt6B^RO processErrorCode(responseCode); 9X/]O<i,Es return -2; //-2 represent access is error e*)*__$O } 9?]69O
O3 NI zl $mt'\y String sHeader; []OmztB ^pwT8Bp 7bSj[kuN for(int i=1;;i++) 8n??/VDRl { l]R=I2t //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); XSHK7vpMf //Utility.log(in.readLine()); =hY9lxW sHeader=httpConnection.getHeaderFieldKey(i); TAB'oLNp if(sHeader!=null) !{q_Q ! { 4g+Dp&U if(sHeader.equals("Content-Length")) N1iP!m9Q { Y#[xX2z9 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Zz/
z7~{ break; {:]u 6l } 0uL*-/| } WA((>Daf] else X{Ij30Bmv break; 8Wba Hw_ } zt;aB>jz# } 3!M|Sf<s catch(IOException e){e.printStackTrace ();} o3W@)|> catch(Exception e){e.printStackTrace ();} 'D'H)J Z\r?>2 CT?4A1[aD Utility.log(nFileLength); ^ 6b27_= " %
l`` %/oeV;D return nFileLength; =&Z#QD"vl } W#&BU-|2 s}q tM.^W x3:d/>b //保存下载信息(文件指针位置) )LAG$Cn private void write_nPos() #f@}$@ { +;T\:'CU try{ _1G;!eO output = new DataOutputStream(new FileOutputStream(tmpFile)); 'i<%kL@ output.writeInt(nStartPos.length); %6\L^RP for(int i=0;i<nStartPos.length;i++) os n ,kD* { +,]_TxL|C // output.writeLong(nPos); bgeJVI output.writeLong(fileSplitterFetch.nStartPos); {8 # output.writeLong(fileSplitterFetch.nEndPos); CC)Mws+2 } 3/y"kl:<- output.close(); ; GEr8_7 } .Zc:$"gDu catch(IOException e){e.printStackTrace ();} &D91bT+L catch(Exception e){e.printStackTrace ();} !5
?<QKOe } </pt($ ?$MO! ]?T,J+S //读取保存的下载信息(文件指针位置) MU4BAN private void read_nPos() P~84#5R1 { _\<TjGtG try{ T|p%4hH DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); LJA
uTg int nCount = input.readInt(); /[5\T2GI nStartPos = new long[nCount]; a4XK.[O nEndPos = new long[nCount]; X4L@|"ZI for(int i=0;i<nStartPos.length;i++) Wcbm,O4u { ]c1#_MW nStartPos = input.readLong(); sf
O{.#5< nEndPos = input.readLong(); !D!"ftOm } /.(~=6o5 input.close(); Wj8WT)cB } fZ(k"*\MZ catch(IOException e){e.printStackTrace ();} e5D\m g) catch(Exception e){e.printStackTrace ();} Bjh8uW
G } 8@ S@^C*F %XQJ!sC` ~R\ $Z private void processErrorCode(int nErrorCode) R[kF(C& { _C=01 %/ System.err.println("Error Code : " + nErrorCode); 21my9Ui] } e:K'e2 ]f5vk )=cJW(nfP //停止文件下载 Y5y7ONcn public void siteStop() sX]gL { qoZe<jW ( bStop = true; d6ifJ for(int i=0;i<nStartPos.length;i++) h*Mt{A&'.& fileSplitterFetch.splitterStop(); a5(9~.9 >}/T&S MShcZtN } AF,;3G } '$VP\Gj. //负责部分文件的抓取 G
*<g%" **FileSplitterFetch.java iVo-z# */ 'UTMEN& package NetFox; 3T>6Q#W5eO NZlCn:" p} JGx^X~ import java.io.*; >p`i6_P0P/ import java.net.*; c[;A$P=
8. E>:#{% #GfM^sK public class FileSplitterFetch extends Thread { =iB$4d2 hu7oJ H 9?^0pR p String sURL; //File URL 1(Z+n,Hh long nStartPos; //File Snippet Start Position z@~mu long nEndPos; //File Snippet End Position lv~ga2>z int nThreadID; //Thread's ID zn0%%x+!g boolean bDownOver = false; //Downing is over ~@e=+Z boolean bStop = false; //Stop identical r9<#R=r)}J FileAccessI fileAccessI = null; //File Access interface /XNC^!z6Js ?kRx;S+ n0t+xvNDF_ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException N7GZ'-t^Er { YRv}w3yQ this.sURL = sURL; Pa=xc>m^ this.nStartPos = nStart; A<(Fn_&W this.nEndPos = nEnd; ^)'D
eP/ nThreadID = id; 4^9qs%& fileAccessI = new FileAccessI(sName,nStartPos);//定位 gc
b8eB, } -Vs;4-B{9 |h&okR+_, G @]n(\7Y public void run() ,#9i=gp { 1\AcceJ|(w while(nStartPos < nEndPos && !bStop) Dc 84^>l { ? :A%$T T hVq5 i?V:+0#q\] try{ b/tcD r URL url = new URL(sURL); 3ly]DTbz HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); {$7vd httpConnection.setRequestProperty("User-Agent","NetFox"); .3wx}!:*| String sProperty = "bytes="+nStartPos+"-"; K.}jyhKIKi httpConnection.setRequestProperty("RANGE",sProperty); +x?8\
Utility.log(sProperty); LaL{
^wP IU"n`HS Cd_H<8__ InputStream input = httpConnection.getInputStream(); ]<9o>#3 //logResponseHead(httpConnection); cnDF`7xrT ]6MXG% /N")uuv byte[] b = new byte[1024]; V<U9Pj^?^ int nRead; dV^ck+ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) k`\L-*:Ji { a4]=4[(iu> nStartPos += fileAccessI.write(b,0,nRead); >
lI2r} //if(nThreadID == 1) gEmsPk, // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); "b"|ay } M(ie1Ju Wi*HLP!lNC `2j"Z.= Utility.log("Thread " + nThreadID + " is over!"); sD6vHX% bDownOver = true; YdYaLTz //nPos = fileAccessI.write (b,0,nRead); mAe)Hy % } yATXN>]l catch(Exception e){e.printStackTrace ();} (%fSJCBl[P } I@1VX5 } kPSi6ci ]XWtw21I1 Pb7-pu5X //打印回应的头信息 ("=B,%F_ public void logResponseHead(HttpURLConnection con) c=Zurqj { -(E-yCu for(int i=1;;i++) "&\]1A}Z-x { h0l_9uI String header=con.getHeaderFieldKey(i); ciN*gwI) if(header!=null) OjK+`D_C //responseHeaders.put(header,httpConnection.getHeaderField(header)); '=UsN_@ Utility.log(header+" : "+con.getHeaderField(header)); NH,4>mV$! else j^Ln\N]^ break; %'9&JsO } C1-Jj_XQ. } f=>iiv 4@@gC&:Y CSr2\ogT public void splitterStop() %,udZyO3uR { ~tB9kLFG bStop = true; <7j"CcJzZ } ,(kaC.Em Z}>+!Z 2K2*UC`f } ro^T L Fz]!2rt N&W7g#F /* ::Pf\Lb> **FileAccess.java =CL h<& *//文件访问(定位,写) A$]#f package NetFox; uJJP<mDgA import java.io.*; J 77*Ue^ v3]~*\!5 tsf!Q public class FileAccessI implements Serializable{ z2SR/[I? w6[$vib' //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 SXmh@a"*\ RandomAccessFile oSavedFile; wM#q [m; long nPos; 62>/0_m5
83:qIfF !)uXCg9U public FileAccessI() throws IOException z9^_5la# { 2spK#0n.HV this("",0); jHc/ EZB } ~VJP:Y{[ 13I~
=L}$#Y8? public FileAccessI(String sName,long nPos) throws IOException Ijs=4f { [,mcvO; oSavedFile = new RandomAccessFile(sName,"rw"); v0|"[qGb this.nPos = nPos; \J^xpR_0u oSavedFile.seek(nPos); KnYHjJa } Q37zBC0 }/Y)^ A;Uw
b public synchronized int write(byte[] b,int nStart,int nLen) 0"=}d y { Rj,M|9Y)o int n = -1; l, 1.6
try{ iTeFy-Ct oSavedFile.write(b,nStart,nLen); 7R".$ p n = nLen; C,3yu,' } u9dL-Nr` catch(IOException e) JPS<e*5 { \ffU15@N e.printStackTrace (); |-VbJd } *wJ'Z4_5F ij1g2^],4 |}K7Q return n; `H\NJ, } \fD[Ej ~7&O[ y1hJVYE2 } .(zZTyZr j_~lc,+m '#x<Fo~hT /* Q$DF3[NC **SiteInfoBean.java k3t2{=&'&x */ [0hZg package NetFox; 7$I *ju_ .AZ+|?d cOEzS public class SiteInfoBean { FI(M 1iJ U>_#,j 9:6d,^X private String sSiteURL; //Site's URL *gXm&/2* private String sFilePath; //Saved File's Path 7S9Q{ private String sFileName; //Saved File's Name 1oIu~f{` private int nSplitter; //Count of Splited Downloading File wenJ (0L| %uhhQ<zs% RlTVx: public SiteInfoBean() )ur&Mnmm {//nSplitter的缺省值为5 X+XbIbUuL //default value of nSplitter is 5 nzORG this("","","",5); ecy41y'~: } &,@wLy^T Mt`XHXTp t9
m],aH public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) )BLoj:gYn { s
*1%I$=@ sSiteURL= sURL; YJ^TO\4WM sFilePath = sPath; \:wLUGFl5 sFileName = sName; 4Vi&Y')f this.nSplitter = nSpiltter; b`sph%& Dbo.N` Gk5SG_o } 8RR6f98FF 4\yKd8I +bK.{1 public String getSSiteURL() F
/:2+ {
vmXY}Ul return sSiteURL; JP<Z3
A2q } 9#@CmiIhy v{2Vg +C !A@ public void setSSiteURL(String value) sIJ37;ZA { 8h2! 8' sSiteURL = value; "ci<W_lx } +iPS=?S C&'Y@GE5 N]sX
r public String getSFilePath() v+*l|!v { gZs8BKO return sFilePath; Up$vBE8i] } :I }_ O({-lI %j=,c{`Q public void setSFilePath(String value) (IR'~:W { IczEddt@' sFilePath = value; rkl/5z?? } jjm-%W@ 2aN -~h2^Oez public String getSFileName() UmU=3et<Wj { 7c6-S@L return sFileName; )N2yhdcqI } g5to0 mHox <_H0Q_/( public void setSFileName(String value) xTM&SVNbL_ { :OBggb#?! sFileName = value; ? F fw'O } 0p$?-81BJ @11voD nZN]Q9 public int getNSplitter() >|7&hj$ { 4#=!VK8ZH return nSplitter; @Cm"lv.hz } *(d^k; $zz=>BOk ~%Yh`c
EP public void setNSplitter(int nCount) Ye!= { yZFvpw|g nSplitter = nCount; '7'cKp } 3g|O2>*? } M7,|+W/RK uD:O[H-x }.zgVLL /* N M~e **Utility.java nhXa&Nro */ 3[aJ=5 package NetFox; dt3Vy*zL 0#*\o1r\p [AX).b public class Utility { 9f,HjRP b<.+WkO "TjR]jnV( public Utility() R?|_`@@A { 7P|(j<JX6' *bRH,u }>frK#S } gi;V~>kh aeBth{ //线程睡眠 vlj|[joXw public static void sleep(int nSecond) sCRBKCR? { H V try{ Tu/JhP/g,` Thread.sleep(nSecond); P<4jY?. } s.GhquFCrU catch(Exception e) `XWxC:j3% { GF/p|I D e.printStackTrace (); {8B\-LUR } 5E!|-xD } E!Fy2h>[Z H8-,gV //日志 IG9Q~7@ public static void log(String sMsg) ([9h.M6v { x6) System.err.println(sMsg); 10}Zoq|)n } WVNQ}KY )E[5lD61 )7i?8XiSZF public static void log(int sMsg) lP9I\Ge& { nO|S+S_9 System.err.println(sMsg); xwRnrWd^6 } ~hxB Pn." } o"]eAQ yZ!Eu#81 @`_j't, /* %cm5Z^B1" **TestMethod.java 6=@n
b3D% */ _E30t( _. package NetFox; ?xf;#J+{8 .e"jnP~ Zgg 7pL)#c public class TestMethod { {!/y@/NK2 TAAsV#l G1nW{vce public TestMethod() 7K;dVB { ///xx/weblogic60b2_win.exe v =?V{"wk! try{ hx2C<;s4 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5);
yCkm| //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); `Eu(r]:W SiteFileFetch fileFetch = new SiteFileFetch(bean); KqSa"76R fileFetch.start(); {tT`It } NuooA catch(Exception e){e.printStackTrace ();} O)5PUyC:H Fd\XDc[g r2](~&i2 } '0O[ dN Z*TW;h0ZQ3 Zn/9BO5 public static void main(String[] args) RYV6hp)| { /-hF<oNQ new TestMethod(); "{Be k< } |ber:1 } 3'"M31iA 点击下载更多相关资料
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