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/* P8&BtA **SiteFileFetch.java _?VMSu */ w.7pD package NetFox; CjRU3
(Q import java.io.*; N.~zQVO#R import java.net.*; -hd@<+;E #BLx +mLq pL [JGn public class SiteFileFetch extends Thread { \&!qw[;O k -V3l &\Ze<u SiteInfoBean siteInfoBean = null; //文件信息Bean ]Rk4"i long[] nStartPos; //开始位置 ` x|=vu- long[] nEndPos; //结束位置 ;?h+8Z/{ FileSplitterFetch[] fileSplitterFetch; //子线程对象 K*!qt(D& long nFileLength; //文件长度 `;~A boolean bFirst = true; //是否第一次取文件 QsemN7B"< boolean bStop = false; //停止标志 *F:)S"3_~e File tmpFile; //文件下载的临时信息 u~pBMg
, DataOutputStream output; //输出到文件的输出流 MpNgp)%> 8-||Nh //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) uM"_3je{W2 public SiteFileFetch(SiteInfoBean bean) throws IOException DXI{ jalL { `erKHZ]S siteInfoBean = bean; C@o8C%o //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); #Sc9&DfX tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); o=]\Jy if(tmpFile.exists ()) MlKSjKl" ! { ^RI&`5g bFirst = false; #ETy#jKL read_nPos(); E4QLXx6Wa& } y2`}, else .QvH7 { 7:C_{\( nStartPos = new long[bean.getNSplitter()]; 6 l,8ev nEndPos = new long[bean.getNSplitter()]; [d?tf } dZWO6k9[H m[}@\y -F$v`|(O+ M\_IQj } ieap VbI$#;:[7 |Cm6RH$( public void run() o#K*-jOfiH { \[9^,QP //获得文件长度 # 4&t09 //分割文件 14pyHMOR //实例FileSplitterFetch vojXo|c //启动FileSplitterFetch线程 e"(SlR //等待子线程返回 c5em*qCw$ try{ y*#YIS56I if(bFirst) 7 1+
bn { |!q,J nFileLength = getFileSize(); elGwS\sw if(nFileLength == -1) -=WQed} { s-801JpiJ System.err.println("File Length is not known!"); LrH"d } 64UrD{$o else if(nFileLength == -2) oTN:Q"oK7? { z&c|2L-u6 System.err.println("File is not access!"); |)65y
} QOR92}yC else e>2KW5. { (O$il for(int i=0;i<nStartPos.length;i++) eH]9"^>
o { at+Nd K nStartPos = (long)(i*(nFileLength/nStartPos.length)); \0veld } a@S{A5j for(int i=0;i<nEndPos.length-1;i++) lyD=n { U#G<cV79 nEndPos = nStartPos[i+1]; 2!_DkE } 8F
K%7\V nEndPos[nEndPos.length-1] = nFileLength; %M,^)lRP } 6z5wFzJv?q } F};T<# P84=.*> %-KgR //启动子线程 w `nm}4M fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; T'ei>]y] for(int i=0;i<nStartPos.length;i++) &n'@L9v81 { Ih HKRb[ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), RT.
%\))) siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), Alk+MwjR nStartPos,nEndPos,i); `t"7[Zk Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ZmDM=qN fileSplitterFetch.start(); D(WdI } 9~J#> C0} // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), N9#5 P! siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); J9/EJ'My // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Urz9S3#\ nEndPos = " + nFileLength); < V*/1{ // fileSplitterFetch[nPos.length-1].start(); Y?6}r;< ^;sE)L6 bA1O]:` //等待子线程结束 >a;LBQ0 //int count = 0; )Ut K9;@" //是否结束while循环 I|l5e2j boolean breakWhile = false; 9vP#/ -g tlM >=s'T TkR#Kzv380 while(!bStop) cGyR_8:2cv { Nwo*tb: write_nPos(); +|--}iE5n Utility.sleep(500); X%$1%)C9 breakWhile = true; vaLP_V vScEQS$> n/{ pQ&B for(int i=0;i<nStartPos.length;i++) 29^(weT"] { e'sS",o* if(!fileSplitterFetch.bDownOver) ?kK3%uJy& { o)GesgxFa5 breakWhile = false; x];i?
4 break; 6:q,JB@i } YwS/O N } &Oc
`|r* if(breakWhile) fRb break; /:v}Ni"6nF !sp`oM q"5\bh1" //count++; 'ka}x~EF //if(count>4) rd;E /:`5 // siteStop(); *'*,mfk[ } "(iDUl au]W*;x /BN=Kl] System.err.println("文件下载结束!"); }G "EdhSl } 8>9MeDE catch(Exception e){e.printStackTrace ();} $DaQM'- } :r2d%:h%2 RG=i74a voFg6zoV_ //获得文件长度 ]T{v~]7:{ public long getFileSize() JAM]neKiX { dOK]Su int nFileLength = -1; KF1Zy; try{ }lXor~_i URL url = new URL(siteInfoBean.getSSiteURL()); DS9-i2 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 2r!- zEV httpConnection.setRequestProperty("User-Agent","NetFox"); qnb/zr)p #Cx#U"~G` Z^BZH/I? int responseCode=httpConnection.getResponseCode(); +^jm_+ if(responseCode>=400) J 7sH] { e _(';Lk processErrorCode(responseCode); -Mf-8zw8G return -2; //-2 represent access is error ^oYRBEIJH } 0|]d^bo LqXVi80 3ZN\F String sHeader; ]9~Il# P+y XC^ , g{
;OgS3> for(int i=1;;i++) ,:#h;4!VRF { a*t @k*d_ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ;n.h !wmJ} //Utility.log(in.readLine()); cNikLd~?A sHeader=httpConnection.getHeaderFieldKey(i); *Z\AO'h=Z if(sHeader!=null) Ly/ { 0176 if(sHeader.equals("Content-Length")) @FZ_[CYg { ~N/a\%` nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); *&I
_fAh] break; >K&chg@Hv } .'. bokl/ } |26[=_[q else h:|BQC break; :0ltq><? } ll[&O4.F } cq 5^7. catch(IOException e){e.printStackTrace ();} yJ`{\7Uqg catch(Exception e){e.printStackTrace ();} y>:U&P^ `A5n6*A7 CbXSJDs Utility.log(nFileLength); [c -|`d^ s(ap~UCOw h6IO ;:P) return nFileLength; 2.=G } >$yA
,N cW_l | q!+:zZu //保存下载信息(文件指针位置)
]NtBP private void write_nPos() k7{|\w% { c<lEFk!g try{ _mk@1ft output = new DataOutputStream(new FileOutputStream(tmpFile)); vC^{,?@ output.writeInt(nStartPos.length); a\~118 ! for(int i=0;i<nStartPos.length;i++) yye5GVY$ { p] N/]2rR // output.writeLong(nPos); @h_ bXo output.writeLong(fileSplitterFetch.nStartPos); ,`OQAJ)> output.writeLong(fileSplitterFetch.nEndPos); 4;>HBCM4- } oX*;iS X output.close(); lWd@ } ,jtaTG.> catch(IOException e){e.printStackTrace ();} +Wgfxk'{ catch(Exception e){e.printStackTrace ();} \YFM5l;IU } OHW|?hI=[ ]5K(}95&' <`G-_VI //读取保存的下载信息(文件指针位置) +S+=lu _ private void read_nPos() FC~%G&K/q^ { FV3[7w=D\ try{ :>o0zG[;f DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); X$@qs9?)^ int nCount = input.readInt(); Ryygq,>VD. nStartPos = new long[nCount]; )FmIL(vu nEndPos = new long[nCount]; @H3x51PT(m for(int i=0;i<nStartPos.length;i++) 49<t2^1q { )y Zr] nStartPos = input.readLong(); 6|{&7=1t nEndPos = input.readLong(); yGSZ;BDW:K } VXlAK( input.close(); lzz;L
z } )v11j.D catch(IOException e){e.printStackTrace ();} ms!|a_H7r catch(Exception e){e.printStackTrace ();} ywkRH } m2YsE
j7 h{H*k#> -'L~Y~'. private void processErrorCode(int nErrorCode) ,Vo[mB { H3`.Y$z System.err.println("Error Code : " + nErrorCode); ~'0ZW<X. } )n1[#x^I F |R7hqf <2]D3,.g. //停止文件下载 _ WPt
zL public void siteStop() $uJc/ { $duT'G, - bStop = true; =yM%#{t&W for(int i=0;i<nStartPos.length;i++) g oyQ',+ fileSplitterFetch.splitterStop(); S("dU`T? ~IWdFUKk 'ey62-^r6 } #B6f{D[pI } #`f{\ //负责部分文件的抓取 ~b!la **FileSplitterFetch.java W}2!~ep! */ 6O.kKhk package NetFox; (9TSH3f? Z
h9D^I LH=^3Gw import java.io.*; diVg|Z3T import java.net.*; H?a $o( "frioi`a2 $$W2{vr7+ public class FileSplitterFetch extends Thread { '1xhP}'3) o)n)Z~ I"x~ 7
String sURL; //File URL A>e-eD xi long nStartPos; //File Snippet Start Position |5:2?S2R long nEndPos; //File Snippet End Position o1?-+P/ int nThreadID; //Thread's ID ;ND[+i2MN boolean bDownOver = false; //Downing is over ^OX}y~' boolean bStop = false; //Stop identical .T ,HtHe FileAccessI fileAccessI = null; //File Access interface t+q;}ZvG ;hV|W{=w MEJX5qG6m public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Lccy~2v> { *RVCz|0%w this.sURL = sURL; *5*#Z~dut8 this.nStartPos = nStart; fA?v\'Qq/ this.nEndPos = nEnd; 9E8&~y nThreadID = id; #"?pY5 (" fileAccessI = new FileAccessI(sName,nStartPos);//定位 '
Q(kx*; } surNJ,) 9wGsHf8] ;H`@x Lv* public void run() S
w%6- { Jc}6kFgO6 while(nStartPos < nEndPos && !bStop) @1gURx&2_ { \>}#[?y zS|4@t\__ Njr;Wa.r+ try{
N-&ZaK URL url = new URL(sURL); ]jn1T^D' HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); <6Y;VH^_ httpConnection.setRequestProperty("User-Agent","NetFox"); &Xh> w(u String sProperty = "bytes="+nStartPos+"-"; 2
'D,1F httpConnection.setRequestProperty("RANGE",sProperty); |r,})o> Utility.log(sProperty); x{zZ%_F YcclO 0'.z|Jg= InputStream input = httpConnection.getInputStream(); _u u&? <h //logResponseHead(httpConnection); DO~[VK%| )?{!7/H F@ WQze|b% byte[] b = new byte[1024]; Y<(7u`F int nRead; }7b{ZbDI while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) C4`&_yoP4- { ai1;v@1 nStartPos += fileAccessI.write(b,0,nRead); G3+e5/0 //if(nThreadID == 1) FE{c{G< // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `w`N5 ! } <nG}]Smd7 DR3om;Uk "v`q%(TA Utility.log("Thread " + nThreadID + " is over!"); mAGD qz>f bDownOver = true; lo'#dpt< //nPos = fileAccessI.write (b,0,nRead); Mp!1xx } aXQAm$/
> catch(Exception e){e.printStackTrace ();} $BgaLJs/O } j6~`C
?( } #a~BigZ[G }cGILH% z;2& d<h //打印回应的头信息 ?V+\E2 public void logResponseHead(HttpURLConnection con) ;S$ { .d[^&<^ for(int i=1;;i++) dTCLE t. { rr\9HA String header=con.getHeaderFieldKey(i); bma.RCyY< if(header!=null) 3+d^Bpp4 //responseHeaders.put(header,httpConnection.getHeaderField(header)); P]y{3y:XxM Utility.log(header+" : "+con.getHeaderField(header)); <YEKbnw$o else O-)[!8r break; wb(S7OsMO
} s_RK x)w@ } dhxzW@'nIL }~PG]A 4g2`[< S public void splitterStop()
Rx"+i0 { $6J22m!S4n bStop = true; lxgfi@@+h } ~MC5rOA
59SL
mj Bhx.q,X } mLkp*?sfC 'jE/Tre^ (jhi<eV /* KWD{_h{ R **FileAccess.java yHC[8l8% *//文件访问(定位,写) WbhYGcRy package NetFox; xg^%8Ls^ import java.io.*; l<4P">M!. 0<uLQVoR2n xr@;w8X`^ public class FileAccessI implements Serializable{ iRkUL]H@& n{L^W5B //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 v@SHR0 RandomAccessFile oSavedFile; 5{+2#- long nPos; }:{ @nP YT'V/8US qrj f public FileAccessI() throws IOException j7a}<\ { _unoDoB this("",0); cpw=2vnD } ;Gn>W+Ae
M 4I2:"CK06 $8 &Y(` public FileAccessI(String sName,long nPos) throws IOException NvTK7? v { 8rlf9m oSavedFile = new RandomAccessFile(sName,"rw"); lc~c=17 this.nPos = nPos;
E^5 oSavedFile.seek(nPos); mS;WNlm\ } -}j(_]t )p;t
'*] "K9[P:nw public synchronized int write(byte[] b,int nStart,int nLen) Wf5;~RJC? { 8mRZ(B>% X int n = -1; oHv.EO try{ :eD-'#@$u oSavedFile.write(b,nStart,nLen); Hf1b&8&:K n = nLen; f_LXp$n } n/*" 2 catch(IOException e) qa@;S,lp { SDS P4W5 e.printStackTrace (); tq~f9EvC } GhcH"D%- PZ'|) eg?p)| return n; fr04nl } ;vPFRiFK [4YRyx&:++ No[9m_ } q&&"8.w- U&Atgv U=j`RQ 9, /* "+qZv( **SiteInfoBean.java >FHx], */ ZlE=P4`X: package NetFox; :8}Qt^p Tmu2G/yi G,P
k3>I' public class SiteInfoBean { *\}$,/m[' >d"\ i?@7>Ca private String sSiteURL; //Site's URL Evg#sPu\ private String sFilePath; //Saved File's Path KVEc:<|x private String sFileName; //Saved File's Name _99 +Vjy private int nSplitter; //Count of Splited Downloading File h:C:opa-= |x&4vHXR0 MNTVG&h public SiteInfoBean() 33eOM(`D[ {//nSplitter的缺省值为5 a;U)#*(5|v //default value of nSplitter is 5 JgP%4)]LV this("","","",5); A/}[Z\C } }2*qv4},! !blGc$kC L[Y$ `e{zd public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) zPHx\z" { i,Z-UA|f=T sSiteURL= sURL; .=G3wox3 sFilePath = sPath; :@E^oNKa0 sFileName = sName; <6hs<qXqi this.nSplitter = nSpiltter; l?m 3* <_*5BO 5&L*'kV@ } 'x?|tKzd 8dt=@pwx& P Gxv4(% public String getSSiteURL() y0O e)oP { %G6x \[, return sSiteURL; l& sEdEA } %z[=T@ 1B&XM^>/ sRcS-Yw[S public void setSSiteURL(String value) o.|36#Fa { o>d0R
w4h sSiteURL = value; ?/hS1yD; } x#5[i;-c [9~EH8 ]w]BKpU= public String getSFilePath() F2Ny=H&G {
O5+Ah% return sFilePath; }z\ t}lven } 9h-S,q! :nqDX /RhM6N public void setSFilePath(String value) jY/(kA]} { 0v1~#KCm sFilePath = value; +9t{ovF?L } YbWz!.WPe `-b{|a J aYpc\jJ public String getSFileName() C9k"QPE { V8o,
e return sFileName; {IBbN05 ; } 5RO6YxQ ).u>%4=6 /Hm/%os public void setSFileName(String value) /J!hKK^k { &pz`gna sFileName = value; e,#5I(E } HD$`ZV A93(} V7I LSXsq} public int getNSplitter() 5OOXCtIKf { ,?%Y*?v return nSplitter; )ytP$,r![S } :AuK Q`c P&Xy6@%[Z DSp~k) public void setNSplitter(int nCount) :c )R6=v { UaQW<6+ nSplitter = nCount; e9S*^2; } \fUVWXv } B"*PBJuOA ga;t`5+d F60m]NUM)c /* KqaEHL **Utility.java K@osD7- */ =R9`to|
package NetFox; _XrlCLp: d 7VkjnG^!: !>K=@9NC|. public class Utility { Dp} $q`F[ ~ \u>jel !@ AnwV] public Utility() F<2gM#jLB { O0pXHXSAL *8%uXkM m 7s:cg } 2AxKB+c1` a~-k} G5 //线程睡眠 %^"i\-*|S public static void sleep(int nSecond) 4m~p(r { kqC7^x try{ pMUUF5 Thread.sleep(nSecond); y=SpIbn{ } UK@hnQU8` catch(Exception e) EW]8k@&g { 6Ol)SQE, e.printStackTrace (); !@+4&B= } ~_-+Q=3 } {K/xI i5*/ZA_ //日志 !g~u'r'1 public static void log(String sMsg) #Wv8+&n { YsTF10 System.err.println(sMsg); Ac
+fL } QNj6ETB-d sN1I+X poi39B/Vt public static void log(int sMsg) Ipow
Jw^ { hrfSe $8 System.err.println(sMsg); &&96kg3 } '0qKb* } S^i<_?nwg v:9Vp{) MP
Q?Q]' /* LN'})CI8m **TestMethod.java 6?0QzSpfC# */ cI<T/~P package NetFox; c+1<3)Q< eE0nW+i g9=O<u# public class TestMethod { #'y^@90R :+fW#: uH)v\Js public TestMethod() -li;w
tCS { ///xx/weblogic60b2_win.exe >+ Im:fD try{ f+QDjJ?z SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 7zXX& |