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/* w {"1V7| **SiteFileFetch.java ?(n v_O */ Z #T package NetFox; Y2;2Exp^ import java.io.*; T];dFv-GT import java.net.*; uuxVVgWp{ qXhdU/
= e,,O public class SiteFileFetch extends Thread { ^,,}2dsb> UOk\fyD2[ $
nHD,h SiteInfoBean siteInfoBean = null; //文件信息Bean bAbR0) long[] nStartPos; //开始位置 ,ryL("G long[] nEndPos; //结束位置 R1D ; FileSplitterFetch[] fileSplitterFetch; //子线程对象 u`&lTJgF/O long nFileLength; //文件长度 #y[U2s Se boolean bFirst = true; //是否第一次取文件 4"_`Mu_% boolean bStop = false; //停止标志 aZ+><1TD File tmpFile; //文件下载的临时信息 zgH(/@P DataOutputStream output; //输出到文件的输出流 U`lK'.. ~USt&? //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) s*s~yH6 public SiteFileFetch(SiteInfoBean bean) throws IOException Q@7d:v { Bp3E)l siteInfoBean = bean; JXM]tV //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); uKd4+Km tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); DY9]$h*y if(tmpFile.exists ()) OZ+v ~'oD { +[<YE bFirst = false; AYgXqmH~+ read_nPos(); a&V;^ / } DU0/if9. else .] sJl { ^lAM /
nStartPos = new long[bean.getNSplitter()]; TS#[[^!S nEndPos = new long[bean.getNSplitter()]; nYFrp)DLK } FY ms]bv I# &r5Q NC#F:M;b s2#Ia>5! } i'7+
?YL D:;idUO LP=j/qf| public void run() d 8DU[p { ](A2,F
9(U //获得文件长度 T*f/M //分割文件 >WIc"y. //实例FileSplitterFetch xbm%+ //启动FileSplitterFetch线程 G[A3H>
> //等待子线程返回 o87kF!x try{ %VH, (}i if(bFirst) XTo7fbW* { }:Gs , nFileLength = getFileSize(); sVK?sBs] if(nFileLength == -1) ^J5{quV { IQRuqp KL System.err.println("File Length is not known!"); v6s,lC5qR } B*,)@h else if(nFileLength == -2) lI 4tW= { $[A\i<# System.err.println("File is not access!"); tqZ+2c<W3 } NS~;{d\ else DK\XC%~m { \xj;{xc for(int i=0;i<nStartPos.length;i++) +yp:douERi { F5Z,Jmi^M nStartPos = (long)(i*(nFileLength/nStartPos.length)); d=PX}o^ } _r*\ BM8y for(int i=0;i<nEndPos.length-1;i++) k~^4 { MQQm3VaKS nEndPos = nStartPos[i+1]; R7kkth } ;^5k_\ nEndPos[nEndPos.length-1] = nFileLength; ch8a } n4/Wd?#` } `8ac;b f9W:-00QD kFv*>>X` //启动子线程 t$18h2yOL fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; P[2!D)A for(int i=0;i<nStartPos.length;i++) T&?g) { NOo? fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), c]PTU2BB8 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), lPZ(c%P nStartPos,nEndPos,i); n^Ca?|}
, Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 5 wrRtzf fileSplitterFetch.start(); x#J9GP. } OT%E|) 6' // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), x9"Cm;H% siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); HOR8Jwf: // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", 9{*{Ba nEndPos = " + nFileLength); P.'.KZJ:WD // fileSplitterFetch[nPos.length-1].start(); @up,5` %.Ma_4o
Z -B
*W^-;* //等待子线程结束 C9!t&<\} //int count = 0;
bDkZU //是否结束while循环 iT>u&0B- boolean breakWhile = false; Aqmpo3P[+ x
b"z%.j :\\NK/" while(!bStop) :&IHdf0+ { jYHn J}< write_nPos(); H648 [H[k Utility.sleep(500); s-$Wc)l breakWhile = true;
s;BMj^x >R+-mP!nj X
zJ#)}f for(int i=0;i<nStartPos.length;i++) {^WK#$] { >A$L&8'C if(!fileSplitterFetch.bDownOver) -&Z!b!jN { w+g29 breakWhile = false; y9r4]45 break; >}+{;d } +e>SK!kB7 } #ibwD:{ if(breakWhile) f#0HiE! break; ]n!V Mu\V3`j T/_u;My; //count++; BJj'91B[d //if(count>4) H9mN nZ_k // siteStop(); E^1yU } }QFL YThVG0I = ?veeW6E( System.err.println("文件下载结束!"); ,/\`Rc^n } oY)eN?c catch(Exception e){e.printStackTrace ();} h>/teHy / } ?zW'Hi A2|Bbqd KD kGQh#9 //获得文件长度 V<QpC5 public long getFileSize() ~}.C*;J { x?Abk int nFileLength = -1; }r:"X<` try{ |_;kQ(, URL url = new URL(siteInfoBean.getSSiteURL()); >Xn,jMUW HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); e~]P _53 httpConnection.setRequestProperty("User-Agent","NetFox"); I-]G{ ]9oj,k -9b=-K.y int responseCode=httpConnection.getResponseCode(); 1bFZyD" if(responseCode>=400) \p4*Q}t { cNWmaCLN$ processErrorCode(responseCode); $*C
}iJsF return -2; //-2 represent access is error w2s`9 } h4hAzFQ.s T3wTMbZ!VK :zHSy&i` String sHeader; LT%~Cuf MhMiSsZ o?baiOkH for(int i=1;;i++) [vi
=^ { '12m4quO //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); S7+>Mk //Utility.log(in.readLine()); y\FQt];z) sHeader=httpConnection.getHeaderFieldKey(i); u$\.aWol if(sHeader!=null) #{6VdWZ { xWxHi6U( if(sHeader.equals("Content-Length")) *~PB { mdc?~?? 8 nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); A;co1,]gR break; -H60T,o
} + ~V%R{h } 8-;.Ejz!\A else ,RPb<3
B break; 7P$*qj~Vh } ?NoNg^ Of } Otq3nBZ catch(IOException e){e.printStackTrace ();} IVxJN(N^ catch(Exception e){e.printStackTrace ();} [G_ ;78 4e#g{, G#7*O` Utility.log(nFileLength); *). z
0?Me H# [J2evi? return nFileLength; hC$e8t60 } Es[3Ppz `{#""I^_ AF:_&gF //保存下载信息(文件指针位置) L'wR$ private void write_nPos() =c6d$ { gW~YB2 $ try{ a!o%x output = new DataOutputStream(new FileOutputStream(tmpFile)); rCo}^M4Pb output.writeInt(nStartPos.length); eEqcAUn for(int i=0;i<nStartPos.length;i++) 0*MUe1{ { w"v96%"Y // output.writeLong(nPos); 8(? &=>@ output.writeLong(fileSplitterFetch.nStartPos); Jq^[^ output.writeLong(fileSplitterFetch.nEndPos);
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} (6fD5XtS output.close(); -c>3|bo } Sstz_t catch(IOException e){e.printStackTrace ();} BsA4/Bf catch(Exception e){e.printStackTrace ();} Bl>m`/\1i } ;1~ n|IY DcxT6[ 5%TSUU+<I //读取保存的下载信息(文件指针位置) &&;.7E private void read_nPos() s(X\7Hz_nC { m+M^we*R try{ HL{aqT2 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); <8(q. int nCount = input.readInt(); ftn10TO * nStartPos = new long[nCount]; remc_}`w nEndPos = new long[nCount]; Eq_@xT0> for(int i=0;i<nStartPos.length;i++) 2 4od74\ { kiF}+,z" nStartPos = input.readLong(); ",~ZO<P nEndPos = input.readLong(); $bhI2%_`M } 'z91aNG] input.close(); oyiG04H& } n{W(8K6d@[ catch(IOException e){e.printStackTrace ();} /K2[`+- catch(Exception e){e.printStackTrace ();} =o~mZ/ 7=M } c6jVx_tt.
6(7
56 J[}j8x?r private void processErrorCode(int nErrorCode) +_X*one { 7jw+o*; System.err.println("Error Code : " + nErrorCode); uBG!R#T } mBL?2~M *lDVV,T'}w eJf]"- //停止文件下载 8A0a/
7Lj public void siteStop() wtbN@g0 { rrC\4#H[?? bStop = true; "7-}#_!g for(int i=0;i<nStartPos.length;i++) |zRrGQYm fileSplitterFetch.splitterStop(); BuvnY ~"*W;|) ~APS_iG[ } ShQ! '[J } +6: //负责部分文件的抓取 oHfr
glGX **FileSplitterFetch.java _rSwQ<38> */ WXo bh package NetFox; 5ms]Wbh) g\B ?
|% 44 8%yP import java.io.*; \hBzQ%0 import java.net.*; uju'Bs7 SDbkPx P\@kqf~pC public class FileSplitterFetch extends Thread { uNEl]Q]<e] mY=sh{ir ;P<h9( String sURL; //File URL UOj*Gt& long nStartPos; //File Snippet Start Position j 0LZ )V long nEndPos; //File Snippet End Position |)d%3s\ int nThreadID; //Thread's ID k"=*' boolean bDownOver = false; //Downing is over 2asRJ97qES boolean bStop = false; //Stop identical tW!*W? FileAccessI fileAccessI = null; //File Access interface O=LW[h! Mp
js [zl4"|_` public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 'Jek<
5 { !5'4FUlJ this.sURL = sURL; e)s
l this.nStartPos = nStart; cD9U^SOS this.nEndPos = nEnd; w3VgGc~ nThreadID = id; Ugo! fileAccessI = new FileAccessI(sName,nStartPos);//定位 1\{FK Ot } AcJrJS)~ HS*Y%* r=37Q14v public void run() s-I M { tYgHJ~1L* while(nStartPos < nEndPos && !bStop) /:!l&1l:p { K8&) kfyI !ni
1 qM 'cu14m_ try{ oP
T)vN? URL url = new URL(sURL); ?x 0gI
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); $v_&jE httpConnection.setRequestProperty("User-Agent","NetFox"); 48S
NI String sProperty = "bytes="+nStartPos+"-"; yIr0D6L httpConnection.setRequestProperty("RANGE",sProperty); /]0SF_dZ Utility.log(sProperty); 2&pE M*cF'go FbMtor InputStream input = httpConnection.getInputStream(); y5KeUMcu //logResponseHead(httpConnection); LRaO}-<b UlNiH <5Ll<0 byte[] b = new byte[1024]; s1sn,? int nRead; 7}MnvWP while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) `t9k!y!GV { g[O nStartPos += fileAccessI.write(b,0,nRead); 7K&Uu3m //if(nThreadID == 1) @@-TW`G7 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); ] ZP!y } 2 ( I4h[ -da: j-_ IMM+g]#e Utility.log("Thread " + nThreadID + " is over!"); @d^DU5ats> bDownOver = true; RO3q!+a$/ //nPos = fileAccessI.write (b,0,nRead); |Vlx: } >hSu1s: catch(Exception e){e.printStackTrace ();} RX_f[ } ~xDu2-5 } !/a6;:_y O3T7O`H[ k{S8q?Gc //打印回应的头信息 C[jX;//Jiu public void logResponseHead(HttpURLConnection con) ,B_tAg4~ { o~CEja&( for(int i=1;;i++) T.')XKP)1N { !Ea9
fe String header=con.getHeaderFieldKey(i); 9
!UNO if(header!=null) KJS-{ed //responseHeaders.put(header,httpConnection.getHeaderField(header)); gMZ+kP` Utility.log(header+" : "+con.getHeaderField(header)); _NwHT`O[ else LXJ;8uW2y break; 9@IL5 47V } NX8hFwR } WI*CuJU<zJ 8lDb<i Q}l~n)= public void splitterStop() lup2>"?* { 5}_=q;sZ bStop = true; tux0}|[^' } T%FW|jKw Z]tQmV8e XHdhSFpm } f[R~oc5P0 bWlYQ
_!vy|,w@e /* =-r); d **FileAccess.java y3j"vKG *//文件访问(定位,写) d-m.aP)y: package NetFox; ux!YVvTPd import java.io.*; ]xoG{%vgb C4gES"T mvTp,^1 public class FileAccessI implements Serializable{ qP&:9eL B/;'D7i|S //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 %I!2dXNFRF RandomAccessFile oSavedFile; [dz3k@ >0 long nPos; Rrl ZQ*Us*9I ;PMh>ZE` public FileAccessI() throws IOException D *PEIsV { S3WUccv this("",0); j`$$BVZ } 7Nk|9t Y6)o7t bi",DKU{l public FileAccessI(String sName,long nPos) throws IOException lsOfpJ { n{etDO oSavedFile = new RandomAccessFile(sName,"rw"); (dQ=i this.nPos = nPos; ,d* hhe
oSavedFile.seek(nPos); wsH _pF }
q~W:W}z bX:h"6{=R q3h&V public synchronized int write(byte[] b,int nStart,int nLen) dT?3Q;>B? { f^"pZS int n = -1; nu~]9~)I try{ $)8,dS oSavedFile.write(b,nStart,nLen); g3{UP]Z71 n = nLen; gVR]z9 } k 9z9{ catch(IOException e) XQfmD;U { tk=S4/VWv e.printStackTrace (); YOrq)_ l } 7:b.c eMFxdtH @@{5]Y return n; Qr7v^H~E4. } 0x]?rd+q8Q RB% y($ LGZa
l&9AY } NV9JMB{q %8xRT@Q |Nj6RB7 /* C&*1H`n **SiteInfoBean.java [>\|QS| */ J,u-)9yBA< package NetFox; >{:hadUH dY~z6bT p)?6#~9$ public class SiteInfoBean { EEL3~H{( S7PWP<9 sO6=w%l^ private String sSiteURL; //Site's URL yrfV&C%=n private String sFilePath; //Saved File's Path r@Jy*2[-Jq private String sFileName; //Saved File's Name Yb/*2iWX private int nSplitter; //Count of Splited Downloading File 9`Fw}yAt s<k2vbhI vPz7*w public SiteInfoBean() x(eX.>o\ {//nSplitter的缺省值为5 ^IIy> //default value of nSplitter is 5 v}V[sIs} this("","","",5); nM b@
B } l$EN7^%w "opMS/a"7 dpNERc5 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) p@4GI[ 4 { 0NC70+4L sSiteURL= sURL; 7dACbqba sFilePath = sPath; pb)8?1O|s sFileName = sName; (?JdiY/ this.nSplitter = nSpiltter; bDtb6hL ,%l}TSs X~JP
1 } foQo`}"5 7>F{.\Z +>vKI8g*RH public String getSSiteURL() * zyik[o { )hj:Xpj9# return sSiteURL; E
BBd } 4m1r@
$ KAFR.h:p9 ~tW~%]bs2Q public void setSSiteURL(String value) mOn_#2=KF { sTlel& sSiteURL = value; ja';NIO- } B#SVN Lv (A6~mi r! T:Klr=&V public String getSFilePath() IY#:v%U { 9N}\>L)_ return sFilePath; 5Q"w{ n } {o)pwM"@( .\^0RyJE Hy[: _E public void setSFilePath(String value) M%!;5 { D5?8`U
m= sFilePath = value; oYStf5 } x}?<9(nE c lYQ|NL(): RE%f'y public String getSFileName() KBN% TqH| { 9T24dofkJ return sFileName; sEdz`F } vb6EO[e%I F1L[3D^- !!^z6jpvn public void setSFileName(String value) <dH@e { Q,xL8i
M, sFileName = value; l_+@Xpl } x2#JD|0 p#ar`-vQ }:Z A) public int getNSplitter() 7D#y { iT4*~(p 3 return nSplitter; bhpku=ov } U-u?oU-.' )P:^A9&_n= H,X|-B public void setNSplitter(int nCount) 0Lxz?R x]< { 8v& \F nSplitter = nCount; rXX>I;`& } 6&eXQl } :V)jm`)#+ cu0IFNF}[ =79R;|5 /* P6 OnE18n **Utility.java JF 4A */ -Qn7+?P package NetFox; ]19VEH 2L^)k?9>g+ @ivd|*?k0 public class Utility { L9D`hefz _]>1(8_N FI$:R public Utility() 'RK"/ZhqE { PX
8 UVA r<e%;S 5XZ!yYB? } @%R<3!3v '+cI W(F? //线程睡眠 y~
=H`PAE public static void sleep(int nSecond) `um,S { ssi7)0 try{ MePD:;mm^ Thread.sleep(nSecond); $>XeC}"x68 } ~t`s&t'c| catch(Exception e) ?0VR2Yb${b { yJm"vN e.printStackTrace (); c[dzO.~ } ]yU"J:/ } HB/V4ki WVbrbs4 //日志 fSuykbZ public static void log(String sMsg) "#j}F u_! {
B )r-,M System.err.println(sMsg); A IP~A]T } az(<<2= PLyity-L[7 \n)',4mY public static void log(int sMsg) 9B: 3Ha= { iEr,ly System.err.println(sMsg); []>'Dw_r } kz"uTJK } 9Yx(u2PQ )u)=@@k21 &7aWVKon /* e`D}[G# **TestMethod.java /~[Lr
*/ 6Xlzdt package NetFox; o%$.8)B9F 9)q3cjP{< 5AYOM=O]t public class TestMethod { %a;#]d RdTM5ANT i--t
?@# public TestMethod() NK_|h% { ///xx/weblogic60b2_win.exe {m.$EoS try{ <>cS@V5j SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); }rTH<!j //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); ?{{w[U6NE SiteFileFetch fileFetch = new SiteFileFetch(bean); 200yN+ ec fileFetch.start(); ~U9K<_U } 'ZfgCu)St catch(Exception e){e.printStackTrace ();} Ey46JO" c3A\~tHW m~ tvuz I } SUncQJJ0S* :d36oiHKu 7 F^d- public static void main(String[] args) 3$$E0`7. { K7+yU3 new TestMethod(); h+ f>#O+: } 0B
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