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/* HC0juT OiO **SiteFileFetch.java ~Ps *i]n( */
/SvhOi package NetFox; g`EZLDjt import java.io.*; w0QtGQ| import java.net.*; rcnH ^P i Ad&o`C 2w>%-_]u+ public class SiteFileFetch extends Thread { W 4{ T< ET*A0rt YV>a 3 SiteInfoBean siteInfoBean = null; //文件信息Bean FT).$h~+4 long[] nStartPos; //开始位置 iIfiv<(ChM long[] nEndPos; //结束位置 ?pL|eS7 FileSplitterFetch[] fileSplitterFetch; //子线程对象 tX*@r long nFileLength; //文件长度 B=Hd:P| boolean bFirst = true; //是否第一次取文件 ]&'!0'3` boolean bStop = false; //停止标志 9~p;iiKGG File tmpFile; //文件下载的临时信息 EPo)7<|> DataOutputStream output; //输出到文件的输出流 ZbRRDXk! H`[FC|RYyE //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) B<W}:>3 public SiteFileFetch(SiteInfoBean bean) throws IOException +'H[4g` { X[z;P!U siteInfoBean = bean; pj'gTQ),0 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <O
jK $KV tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 2OG/0cP if(tmpFile.exists ()) f/\!=sa: { 8 Ku9;VEk bFirst = false; &+9 ; read_nPos(); ]dycesc' } \Y# else _KRnx- { * :"*' nStartPos = new long[bean.getNSplitter()]; YznL+TD nEndPos = new long[bean.getNSplitter()]; ]4rmQAS7" } Q`CuZkP( vc#o(?g b[vE!lJEq Rtf<UhUn } ^!['\ !D22HSv(w a[ULSYEi public void run() '!>9j,BJ { <I,4Kc! //获得文件长度 / Pjd" //分割文件 E2hsSqsu=
//实例FileSplitterFetch +Q&l}2 //启动FileSplitterFetch线程 H )X[%+ //等待子线程返回 {/[@uMS_6] try{ +=WBH' if(bFirst) QW..=}pL { CKw-HgXG nFileLength = getFileSize(); lw=kTYbq if(nFileLength == -1) LcKc#)'EE { g}9,U&$]y System.err.println("File Length is not known!"); l@Lk+-[D } +m_.?V6 else if(nFileLength == -2) o HK { HB9"T5Pd* System.err.println("File is not access!"); &0 QUObK } `(W"wC else F"Dr(V { RXRbW %b for(int i=0;i<nStartPos.length;i++) 9FEhl~& { Zf M]A) nStartPos = (long)(i*(nFileLength/nStartPos.length)); COi15( G2 } m?-)SA for(int i=0;i<nEndPos.length-1;i++) V7$ m.P#uM { Yjg$o:M nEndPos = nStartPos[i+1]; 3P_.SF } %/eG{oh- nEndPos[nEndPos.length-1] = nFileLength; p5In9s } yf{\^^ i( } Uahh|>s Q-) ( s \:'GAByy //启动子线程 ;v8TT}R fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Y]
1U108 for(int i=0;i<nStartPos.length;i++) CW`^fI9H {
Zl_sbIY fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N\|B06X siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), TjpyU:R,&| nStartPos,nEndPos,i); IO7z}![V; Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); '[r: pwE fileSplitterFetch.start();
dX\OP> } FC 8<D // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), zBm~ J% siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); Vc\g"1x // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", clDn=k< nEndPos = " + nFileLength); mjOxmwo // fileSplitterFetch[nPos.length-1].start(); <B%wq>4S b'(AVA Ioe.[&o6B //等待子线程结束 ]xf89[;0 //int count = 0; uNewWtUb( //是否结束while循环 mB2}(DbhE boolean breakWhile = false; (R=ZI [KUkv `&I6=,YLp while(!bStop) hGFi|9/-u { <\*)YKjn/@ write_nPos(); {9J|\Zz3 Utility.sleep(500); 28JVW3&) breakWhile = true; s=$xnc}mf 2?(/$F9X, $d1ow#ROgy for(int i=0;i<nStartPos.length;i++) xpZ@DK; { I
N@ ~~ if(!fileSplitterFetch.bDownOver) UXZ3~/L5 O { )g=mv*9> breakWhile = false; Sh;`<Ggi~ break; K*^'tltJ } hgZvti } wgDAb#Zuk if(breakWhile) WLWfe- break; lf\"6VIsR /XG7M=A$o =ZHN]PP //count++; yI=nu53BV //if(count>4) Z4z|B& // siteStop(); :Gz$(!j1.' } h-.^*=]R6 -/3h&g lBn<\Y!^ System.err.println("文件下载结束!"); !B[Y?b: } =Q"thsR catch(Exception e){e.printStackTrace ();} <S_0=U } [YQtX_;w VK9E{~0= bO6z;D# //获得文件长度 !d0$cF): public long getFileSize() ~#EXb?#uS { gISA13 int nFileLength = -1; Pf8_6 z_ try{ [:,|g;=Y} URL url = new URL(siteInfoBean.getSSiteURL()); uUl ;}W HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); C&q}&=3r httpConnection.setRequestProperty("User-Agent","NetFox"); R||$Wi[$ &WCVdZK: //G&=i$ int responseCode=httpConnection.getResponseCode(); **AJFc if(responseCode>=400) vU/sQt8 { h*4wi.- processErrorCode(responseCode); "%
i1zQo& return -2; //-2 represent access is error $sL+k 'dY } <)cmI .J3 ,:.8s>+i <-d-.
8 String sHeader; c5CxR#O 7F~Jz*,B*W b6 g9! for(int i=1;;i++) 9~,!+# { i(u zb< //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); : Q,O: //Utility.log(in.readLine()); Z(E.F,k sHeader=httpConnection.getHeaderFieldKey(i); bz&9]%S< if(sHeader!=null) HVC|0} { :U1V 2f'l3 if(sHeader.equals("Content-Length")) R^E-9S\@ { (1,4egMpR nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); uxrNkZia break; 4pDZ +}p } F&/}x15 } TR?jT
U else 4J[bh break; v&^N +>p } 7|m{hSc } 8Z@O%\1x6 catch(IOException e){e.printStackTrace ();} ;r;>4+zn\ catch(Exception e){e.printStackTrace ();} I
tn?''~; ]~WIGl"g +SRM?av Utility.log(nFileLength); rI:]''PR F7p`zf@O] KE)^S
[Da return nFileLength; j{5oXW } =F*{O= 0Oq5;5 '?|.#D#-c //保存下载信息(文件指针位置) OUHd@up@n private void write_nPos() Qe<c@i" { v|kL7t)} try{ QD[l 6 output = new DataOutputStream(new FileOutputStream(tmpFile)); IetV ]Ff6 output.writeInt(nStartPos.length); P.|g4EdND for(int i=0;i<nStartPos.length;i++) ~fA H6FdZ\ { zpcm`z // output.writeLong(nPos); =66,$~g{ output.writeLong(fileSplitterFetch.nStartPos); ]o8~b- output.writeLong(fileSplitterFetch.nEndPos); V[|k:($ } RML'C:1 output.close(); lce~6} } *
8D(Lp1 catch(IOException e){e.printStackTrace ();} el0W0T catch(Exception e){e.printStackTrace ();} (7aE!r\Ab } Lj3q?>D*^6 [h
:FJ b~G|Bhxa //读取保存的下载信息(文件指针位置)
BgG+ private void read_nPos() HQ|{!P\/?U { TLzcQ | try{ m+'X8}GC#O DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 9;c]_zt int nCount = input.readInt(); -E!V;Tgc%U nStartPos = new long[nCount]; Kib?JRYt nEndPos = new long[nCount]; l\-(li
H for(int i=0;i<nStartPos.length;i++) YwM;G
g3 { r(=3yd/G$ nStartPos = input.readLong(); 01^W Py9l nEndPos = input.readLong(); j@s,5:;[ } QeAkuqT'[ input.close();
)2,\Y } UUql"$q catch(IOException e){e.printStackTrace ();} yIThzyS catch(Exception e){e.printStackTrace ();} j#XU\G } (aH_K07 7<ES&ls_ }%-`CJ, private void processErrorCode(int nErrorCode) vCNYqa)m: { z[, ` System.err.println("Error Code : " + nErrorCode); ;,&1 } u"n~9!G ph1veD<ZZ ? Kn~fs8 //停止文件下载 0r\hX6 k public void siteStop() whg?X&j\V { K31rt-IIt bStop = true; RT2a:3f for(int i=0;i<nStartPos.length;i++) dQFx]p3L fileSplitterFetch.splitterStop(); @{n2R3)k
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v4<x 4 dTP$7nfe }
*o[*,1Pw } L``K. DF //负责部分文件的抓取 J_mpI.^Bsf **FileSplitterFetch.java f&>Q6 {*] */ t
UW'E package NetFox; }%rz"kB P8s'e_t ^Sr`)vP import java.io.*; 0)qLW&
w import java.net.*; SIRZ_lt$r 8YBsYKC \G*vY#] public class FileSplitterFetch extends Thread { (sn|`k3I 7[V'3 Z)(C7,Xu String sURL; //File URL /T*]RO4%>] long nStartPos; //File Snippet Start Position *Mqg_} 0Y long nEndPos; //File Snippet End Position
FyQ^@@ int nThreadID; //Thread's ID )P.|Xk:r boolean bDownOver = false; //Downing is over B|~\m~ boolean bStop = false; //Stop identical D`.CXFI+U FileAccessI fileAccessI = null; //File Access interface Efw/bTEg |xaA3UA ZD0Q<8% public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException fD|ox { zUxF"g-W this.sURL = sURL; 413r3/ this.nStartPos = nStart; >[Q(!Ai this.nEndPos = nEnd; 4 ITSDx nThreadID = id; z{^XU"yB fileAccessI = new FileAccessI(sName,nStartPos);//定位 rq6(^I } 0:nQGX!N t9x.O
*Qg/W?"m public void run() ]}G(@9 { /^0Hi4+\ while(nStartPos < nEndPos && !bStop) J]|-.Wv1 { 5R,/X U1rh[A> Y6fU; try{ Yb x4 Up@ URL url = new URL(sURL); !H,R$3~ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); e$tKKcj0T httpConnection.setRequestProperty("User-Agent","NetFox"); Fu m1w String sProperty = "bytes="+nStartPos+"-"; ^ yu^Du httpConnection.setRequestProperty("RANGE",sProperty); f=J#mmHw$ Utility.log(sProperty); qx53,^2 Z!|nc. "$:nz} InputStream input = httpConnection.getInputStream(); %-T]!3"n //logResponseHead(httpConnection); JUU0Tx:`9) )WEyB~'o
OH*[ byte[] b = new byte[1024]; !Nl"y'B| int nRead; IEeh)aj[ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) '(u [ { |vWx[=`o nStartPos += fileAccessI.write(b,0,nRead); o *I-~k //if(nThreadID == 1) OBN]bvCJ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [N#2uo } Yq)
wE|k/ (g~&$&pa iQin|$F_O Utility.log("Thread " + nThreadID + " is over!"); m2<sVTN`^ bDownOver = true; Fz)z&WT //nPos = fileAccessI.write (b,0,nRead); 3r^i>r8B } R^_/iy catch(Exception e){e.printStackTrace ();} WZ~rsSZSV } I#S6k%-' } &&(sZGw Ql\{^s+ cKK 1$x //打印回应的头信息 ,1F3";`n[ public void logResponseHead(HttpURLConnection con) O-bC+vB]M { cy/;qd+!M for(int i=1;;i++) #xE"]; { P7"g/j" " String header=con.getHeaderFieldKey(i); |{Z?a^-NJ if(header!=null) 7ktf =Y //responseHeaders.put(header,httpConnection.getHeaderField(header)); M.!U;U<? Utility.log(header+" : "+con.getHeaderField(header)); o& $Fc8bH else *]O[ZjyOY break; LYavth`@h } .azdAq'r&\ } J0lTp / QSEf 0 Co_," public void splitterStop() n>Q/XQXB { #$X_,P|D bStop = true; [ZOo%"M_Y } I`E9]b(w SS@#$t: m[Px|A5{ } )5)S8~Oc }N*6xr*X+ ^0A'XCULG /* +'hcFZn(T **FileAccess.java
JTQ$p*2] *//文件访问(定位,写) 44mYs`] package NetFox; [L]
ca* import java.io.*; @B*?owba> 6#KRI%adw` l)HF4#Bs public class FileAccessI implements Serializable{ !ZD[ $lt+ m(XcPb //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 J/M1#sE RandomAccessFile oSavedFile; oAA%pZ@ long nPos; t!AHTtI I/_`/mQ Fla,#uB public FileAccessI() throws IOException 73rr">
9#0 { = %\;7 this("",0); 'h.{fKG]ME } [>oq~[e)? /
\!hW-+]W Wb68" )$ public FileAccessI(String sName,long nPos) throws IOException 7y&Fb { +kd88Fx oSavedFile = new RandomAccessFile(sName,"rw"); q4|TwRx~ this.nPos = nPos; G5 Y 8]N oSavedFile.seek(nPos); nUz2~z } `)* #&\^{Z W0K&mBu public synchronized int write(byte[] b,int nStart,int nLen) <}pqj3 { Y<#WC#3= int n = -1; W r);A{ try{ h$_Wh( oSavedFile.write(b,nStart,nLen); \RnGKQ"4 n = nLen; Jb#*QJ= } (?72 vCc catch(IOException e) 5^t68
WOl { sf2_x>U1 e.printStackTrace (); {W62%>v } #)AcK|*y 4~53%=+ 9qc1^Fs~ return n; jX$TiG } o) `zb? 1c(1 YGuH lNs 'jaD } -IMm# gEcVQPD@ 7v}4 Pl,$4 /* .;u(uB;J6 **SiteInfoBean.java &n|#jo(gS */ ~Us1F=i_Q package NetFox; y/K% F,WMf YQG[8I 4NMv7[r public class SiteInfoBean { su<_?'uH g^26Gb. hV;Tm7I2 private String sSiteURL; //Site's URL :c"J$wT/ private String sFilePath; //Saved File's Path E
j@M\ private String sFileName; //Saved File's Name YES!?^} private int nSplitter; //Count of Splited Downloading File c|x:]W'ij @I2m4Q{O ,-ZAI b* public SiteInfoBean() %;(+s7 {//nSplitter的缺省值为5 >|KfO> //default value of nSplitter is 5 j0L9Q|s this("","","",5); W1$B6+}Z0V } :Qh5ZO&G0 6cp x1y]~6 y4$UPLm public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) k2sb#]-/} { , d ?4"8_ sSiteURL= sURL; d~tG#<^` sFilePath = sPath; Jxi>1 sFileName = sName; g-U'{I5F this.nSplitter = nSpiltter; Mc oHV]x G1
%c<1Y AGQCk*dm } e2*0NT^R 3M8P% r.**
z j public String getSSiteURL() %gSqc
}v* { ndT:,"s return sSiteURL; Vj_(55WQ } d*khda;Vj ;Jr6 .qi$X!0 public void setSSiteURL(String value) YiB]}/ { EShc1KPqc sSiteURL = value; C_dsYuQ5R } daE/v.a4| 1GN>,Lb:o E D*=8s2 public String getSFilePath() 18z{d9'F { 90|p]I% return sFilePath; YR'?fr } n9]^v-]K F\Q)l+c oD4NQR public void setSFilePath(String value) *>V6KW { h#@l'Cye sFilePath = value; A9qCaq{ } J0a]Wz% i:Pg&474f yc|C}oQF public String getSFileName() R[LVx-e7' { }oigZI(1 return sFileName; `I ,A7b } [6K2V:6: H/Cv ?GJF #x1AZwC public void setSFileName(String value) V.)y7B { qF`;xa%,} sFileName = value; .3?'+KZ, } %eT4Q~}5" Dx$74~2e sSd public int getNSplitter() z@>z.d4 { Wa
#,> return nSplitter; :^0g}8$< } I+D`\OSL Q-F'-@`(C #i-!:6sLA public void setNSplitter(int nCount) E$.|h;i]Q { 6#T?g7\pyR nSplitter = nCount; >C+0LF`U } ?=jmyDXH! } pu=T
pSZ \hdR&f5q hghtF /* Z{+h~?63 **Utility.java <Xm5re. */ ,r{*o6 package NetFox; FI.S?gy0 Bjml% 4D"IAI public class Utility { &YO5N4X~o =}\]i* tirw{[X0n public Utility() XtT;UBE { -Hh$3Uv Q&(?D 9r+ `j } [4
g5{eX $Bz |[= //线程睡眠 4v3y3 public static void sleep(int nSecond) SjKIn- { LoOyqJ, try{ ^%M!!wlUH Thread.sleep(nSecond); ?XsL4HIx } ~ Cks)mJs catch(Exception e) :|<D(YA { ]O<Yr' e.printStackTrace (); vMzR3@4e } NTXT0: } }n6BI}n o80pmy7@ //日志 eWqJ 2Tt public static void log(String sMsg) Br]VCp { -ud~'<k
System.err.println(sMsg); 1kio.9NIp } $7TYix8= >gFF>L> $Y$!nPO public static void log(int sMsg) ~W5fJd0 { zq4,%$y8| System.err.println(sMsg); )K@ 20Q+0K } |xQj2?_z* }
TnM}|~V ?U|~h1
'9auQ(2 /* .Yha(5( **TestMethod.java PwF}yxkI */ {zbH.V[ package NetFox; Rr%]/% %|SbZ)gcQ "^_p>C)T public class TestMethod { SjlkKulMF .a=M@;p E'XFn' public TestMethod() EoQ.d|:g { ///xx/weblogic60b2_win.exe J'@I!Jc try{ z+wV(i97 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 1)u=&t,
//SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); lG\lu'<C SiteFileFetch fileFetch = new SiteFileFetch(bean); J4`08, fileFetch.start(); K/MIDH } nn#A-x}~;b catch(Exception e){e.printStackTrace ();} 5U1@wfKE3> bXJ,L$q C!qW:H } xBB:b\ gl]{mUZz} c0Q`S"o+ public static void main(String[] args) . s?
''/( { fD,#z& new TestMethod(); E_
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