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/* Vs@H>97,G **SiteFileFetch.java ~Rk~Zn */ 0`%Ask package NetFox; CKr5L import java.io.*; |++\"g import java.net.*; O[<0\ B"=w9w] XCUU(H public class SiteFileFetch extends Thread { ^QTtCt^: 4g^Xe- ]@9ZUtU,;N SiteInfoBean siteInfoBean = null; //文件信息Bean 0mi$_Ld+ long[] nStartPos; //开始位置 o2e gNTG long[] nEndPos; //结束位置 b_rHt
s FileSplitterFetch[] fileSplitterFetch; //子线程对象 v2;'F long nFileLength; //文件长度 dxK3462 boolean bFirst = true; //是否第一次取文件 P1I L] boolean bStop = false; //停止标志 :DoE_ File tmpFile; //文件下载的临时信息 w-wap DataOutputStream output; //输出到文件的输出流 /7jb&f m%)Cw)t
7 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) II)
K0< public SiteFileFetch(SiteInfoBean bean) throws IOException m)Sdogt_ { nX|]JW siteInfoBean = bean; 9A!B|s //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); F0]xc tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); LMTz/M if(tmpFile.exists ()) uwo\FI { EaUO>S bFirst = false; #d;/Me read_nPos(); 4"~l^yK } Z|6,*XEc else =Cg1I\ { L wP nStartPos = new long[bean.getNSplitter()]; ['jr+gIfQ nEndPos = new long[bean.getNSplitter()]; -0f,qNF } ZYo?b"6A G e+T[ ibn(eu<uW ()o[(Hx+ph } z6x`O-\ M~,N~ N1 &"'Z)iWm public void run() uN+]q qCf { "^NsbA+ //获得文件长度 4I!g?Moh //分割文件 Z)'gj //实例FileSplitterFetch ne9-
c>> //启动FileSplitterFetch线程 G;Py%8 //等待子线程返回 4c9a"v try{ r}i}4K[1 if(bFirst) 45.Vr[FS. { 8~ wP? nFileLength = getFileSize(); pxb4x#CC if(nFileLength == -1) 8KMo !p\i { r<c&;* System.err.println("File Length is not known!"); |*n
B2 } _:7:ixN[Ie else if(nFileLength == -2) kY^ k*-v { "X,*VQl: System.err.println("File is not access!"); /_qW?LKG/ } W*r1Sy else &(X 67 { +sT S1t for(int i=0;i<nStartPos.length;i++) )18C(V-x { ToX--w4 nStartPos = (long)(i*(nFileLength/nStartPos.length)); Jp"yb`w } o1Nfn'!3/> for(int i=0;i<nEndPos.length-1;i++) LDh,!5G-M { }*?,&9/_) nEndPos = nStartPos[i+1]; Fxv5kho } W[<ZI>mf nEndPos[nEndPos.length-1] = nFileLength; 3nnoXc' } 0)rayzv } bYBE h n $Ts;o i|[**P //启动子线程 ],s{%a5wC fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; X.+|o@G for(int i=0;i<nStartPos.length;i++) `!Yd$=*c_& { =z[$o9 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %U6A"?To siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), DIw9ov>k nStartPos,nEndPos,i); y}1Pc* Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); *-(8Z>9 fileSplitterFetch.start(); 6{!Cx9V } DM,)nh6' // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), kgh0 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); s;cGf+ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", K5^`,}Q^ nEndPos = " + nFileLength); "p]!="\ // fileSplitterFetch[nPos.length-1].start(); 7~Z(dTdSG 89Ir}bCr X& mD/1 //等待子线程结束 H3LuRGe&2 //int count = 0; b|e1HCH //是否结束while循环 gY!?JZC-0 boolean breakWhile = false; {5]c\_. 72 ZoN<c h"7~`!"~ while(!bStop) XK&G `cJ[ { -2'1KAk-W write_nPos(); q_cP<2`@V Utility.sleep(500); >&ENrvaJ breakWhile = true; 0f#xyS 3 ?Wc+
J4 [kf6bf@ for(int i=0;i<nStartPos.length;i++) 9yz@hdG { ?j&ZzK'#^ if(!fileSplitterFetch.bDownOver) |A\o { C5g9Gg breakWhile = false; !
(Q[[M break; $0k7W?tu } \/64Xv3L0 } td7Of(k' if(breakWhile) &0i$Y\g break; }U ' mLx=Zes:. bYO['ORr@ //count++; !jvl"+_FV //if(count>4) 3CH>!QOA // siteStop(); fN/;BT } (&Rql7](8 7>= j
WSgO(y System.err.println("文件下载结束!"); }Ogb|8 } bh(}f.@
9 catch(Exception e){e.printStackTrace ();} ?)T@qn+ } @]!9;?so 6_:I~TTX Fv*Et-8tN5 //获得文件长度 K|Eelhm public long getFileSize() D5!#c-Y- { 1_};!5$. int nFileLength = -1; 1tLEKSo+ try{ --EDr>'D5P URL url = new URL(siteInfoBean.getSSiteURL()); `NTtw;%Y HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); uW
[yNwM httpConnection.setRequestProperty("User-Agent","NetFox"); 3b|=V Gu@C*.jj! E*h!{)z@F int responseCode=httpConnection.getResponseCode(); YmpaLZJ if(responseCode>=400) JfY(};& { !C h1q processErrorCode(responseCode); ,Js-'vX return -2; //-2 represent access is error % m"Qg< } ,,!P-kK$ |]9L# zk"8mTg String sHeader; iCLH @]]&^ 7 9g\;L:' for(int i=1;;i++) TyjZ { plp-[eKcD //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); J.'%=q(Sb //Utility.log(in.readLine()); ANNVE}, sHeader=httpConnection.getHeaderFieldKey(i); 9ln=f= if(sHeader!=null) q#@r*hl { ^`B;SSV if(sHeader.equals("Content-Length")) =H3tkMoi2 { #4JLWg nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); T:@7EL break; k~gOL#$ } XK\3"`kd } Oet+$ b else ,<Z,- 0S break; \7%#4@;? } wZN_YFwQ } nzaA_^`mB catch(IOException e){e.printStackTrace ();} iPkCuLQ} catch(Exception e){e.printStackTrace ();} 8\^A;5 !^ad{#|X 7BL)FJ]UR] Utility.log(nFileLength); TQmrL M9afg$;.xe DIw_"$'At return nFileLength; - U\'Emu4 } %<x!mE x %1$#fxR P%H Dz //保存下载信息(文件指针位置) Fe4>G8uuwn private void write_nPos() Mm(#N/ { %1:caa@_p try{ -- FzRO{D output = new DataOutputStream(new FileOutputStream(tmpFile)); s5rD+g]E` output.writeInt(nStartPos.length); &^#u=w?^x for(int i=0;i<nStartPos.length;i++) RgA"`p7{ { CGzu(@dd\ // output.writeLong(nPos); 9^ZtbmUf output.writeLong(fileSplitterFetch.nStartPos); ~!!\#IX output.writeLong(fileSplitterFetch.nEndPos); w#[cGaIB } 3fp&iz output.close(); n=bdV(?4 } 7KX27.~F catch(IOException e){e.printStackTrace ();} o{! :N> ( catch(Exception e){e.printStackTrace ();} ! xG*W6IT } \Dy|}LE A+gS'DZ9C -F[@)$L //读取保存的下载信息(文件指针位置) QF\nf_X private void read_nPos() Ei):\,Nv { FOk;=+ try{ @aZ Tx/ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); 9$Z0mz k int nCount = input.readInt(); /1v9U|j nStartPos = new long[nCount]; KMz!4N nEndPos = new long[nCount]; )S(Ly. for(int i=0;i<nStartPos.length;i++) XC)9aC@s { *;]}`r nStartPos = input.readLong(); }ePl&-9T nEndPos = input.readLong(); *=2W:,$ } ~bxev/$d input.close(); 4|E^
#C } giX[2`^NG catch(IOException e){e.printStackTrace ();} (Jw_2pHxr" catch(Exception e){e.printStackTrace ();} 3,Yr%`/5' } Uu5(/vw] eF22 ~P j&oRj6;Ha+ private void processErrorCode(int nErrorCode) #}FUa u$ { V(F9=r<X System.err.println("Error Code : " + nErrorCode); _OTVQo Ap } Bskp&NV': .WqqP M|K^u.4 //停止文件下载 h7!O
K public void siteStop() DkEv1]6JI_ { T1$E][@Iv bStop = true; p>;@]!YWQ for(int i=0;i<nStartPos.length;i++) =I546($ fileSplitterFetch.splitterStop(); ;6Yg}L LCH\;07V# {]<c6*gQ } qrYbc~jI7 } rBNVI;JZW //负责部分文件的抓取 <3x%-m+p4 **FileSplitterFetch.java 32<D9_ */ Qk:Lo*! package NetFox; JiaR*3# #~|k EGt P,{Q k~iu import java.io.*; PY.K_(D import java.net.*; hOUH1m. 'UIFP#GtFO *G>
x07S)~ public class FileSplitterFetch extends Thread { #@$80eFq *uhQP47B p35=CX`T. String sURL; //File URL I[Lg0H8 long nStartPos; //File Snippet Start Position /;#kV]nF long nEndPos; //File Snippet End Position &,k!,<IF int nThreadID; //Thread's ID M`H#Qo5/ boolean bDownOver = false; //Downing is over 78uImC*o boolean bStop = false; //Stop identical q2vD)r FileAccessI fileAccessI = null; //File Access interface 1N8] ~j {,Q )D$i phuiLW{& public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException *9EwZwE_K { Yt]`>C[|D this.sURL = sURL; 2!J#XzR0W this.nStartPos = nStart; i D IY| this.nEndPos = nEnd; I?3b}#&V9 nThreadID = id; KFd
+7C9 fileAccessI = new FileAccessI(sName,nStartPos);//定位 7Ed0BJTa } 112WryS qjP~F n[iwi public void run() ^?`fN'!p { Swhz\/u9 while(nStartPos < nEndPos && !bStop) \5r^D|Rp} { 9:USxFM J[ Gpd @|anu&Hm try{ K6IT$$g URL url = new URL(sURL); o+E~iCu5 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); '^m.vS!/ httpConnection.setRequestProperty("User-Agent","NetFox"); 3\XNOJH String sProperty = "bytes="+nStartPos+"-"; cmG27\c RO httpConnection.setRequestProperty("RANGE",sProperty); ;{sZDjev> Utility.log(sProperty); d&FXndC4F BV~J*e &)1.z7T InputStream input = httpConnection.getInputStream(); STW?0B'Jr //logResponseHead(httpConnection); )[Tm[o?Y. rv*{[K L3, /7 byte[] b = new byte[1024]; c| ^I} int nRead; F]
c\Qt while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) '@t$3
hk { T7,]^
1 nStartPos += fileAccessI.write(b,0,nRead); `MOw\Z).. //if(nThreadID == 1) M*zpl} // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); @s LN } +#FqC/`l 7 m{lOR !cyrt< Utility.log("Thread " + nThreadID + " is over!"); '? 5- bDownOver = true; ^5sA*%T4 //nPos = fileAccessI.write (b,0,nRead); PXMd=,} } w.?4}'DK catch(Exception e){e.printStackTrace ();} vhfjZ } %;'~TtW5 } 4E^ ?}_$ H0af u)$, ~XTC:6ts //打印回应的头信息 ~S8:xG+s public void logResponseHead(HttpURLConnection con) Qo#]Lo> \g { V+E8{|dYL for(int i=1;;i++) 8Sr' { ,UY1.tR( String header=con.getHeaderFieldKey(i); .Fo#Dmq3 if(header!=null) "JB4Uaa //responseHeaders.put(header,httpConnection.getHeaderField(header)); TJ"-cWpO1 Utility.log(header+" : "+con.getHeaderField(header)); xnZnbgO+ else )zr*Ecz break; BiYxI{V FD } b)d;eS } BDI|z/~& [H}>
2Q NU=ru/ public void splitterStop() HOP*QX8C% { g<j) bStop = true; Z =+Z96 } xe!bfzU 8fXiadP# !Y~UO)u2 } Y2r}W3F= Q@W/~~N cRT'?w`} /* -5<[oBL; **FileAccess.java |R}=HsYey *//文件访问(定位,写) >w
S'z]T9 package NetFox; k>($[;k|b import java.io.*; (P|[<Sd G4cgY|71 V`I4"}M1 public class FileAccessI implements Serializable{ _,J+b R+b |MwV4^ //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 I1<WHq
RandomAccessFile oSavedFile; 6'# 5Dqw"r long nPos; TjUwe@&Rw <s9{o
uZ N:lfKI public FileAccessI() throws IOException {kpF etXt? { z?o8h
N\ this("",0); X8)k'h } 4IeCb? l f>/ k =! Q public FileAccessI(String sName,long nPos) throws IOException
{MgRi7 { xuioU oSavedFile = new RandomAccessFile(sName,"rw"); ;U* /\+*h this.nPos = nPos; /v
8"i^;} oSavedFile.seek(nPos); p'R<yB)V } jWrU'X X)b$CG WNyW1?" public synchronized int write(byte[] b,int nStart,int nLen) h4;kjr}h} { jK w
96 int n = -1; `_\KN_-%Vu try{ I C oSavedFile.write(b,nStart,nLen); [HILK`@@ n = nLen; FIq'W:q: } *#=Ij r~ catch(IOException e) nR_Zrm { QG5WsuT e.printStackTrace (); <*(Z}p } Kip&YB%rk luoQ#1F?sl Aw#<: 6- return n; (]]hSkE } !xsfhLZK *vb"mB vIV|y>;g } ,Z{\YAh1 8b/$Qp4d [IYVrT&C' /* AQ,lLn+ **SiteInfoBean.java a-NTA */ }Ng P`m package NetFox; Rc1j^S;> eCGr_@1 N>I6f public class SiteInfoBean { :HY$x JS/'0. fL*7u\m: private String sSiteURL; //Site's URL N5?bflY private String sFilePath; //Saved File's Path xw #CwMbbi private String sFileName; //Saved File's Name 1:-'euA" private int nSplitter; //Count of Splited Downloading File yv,FzF}7 \=%lH =yS z!}E2j_9P public SiteInfoBean() 6
U.Jaai: {//nSplitter的缺省值为5 a4*v'Xc5 //default value of nSplitter is 5 Q"&Mr+ this("","","",5); V*?cMJ_G } F^%w%E\ 8V:;HY# 6W
i
n!4 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) o~LJ+m6-) { ]_s3<&R sSiteURL= sURL; ]1
f^ SxSI sFilePath = sPath; Dz }i-tw+ sFileName = sName; [ws
_ g,/ this.nSplitter = nSpiltter; &N}"4 e9LX0= ~`
tuPk~l } 0Ui.nz j $TUYxf0q x3O%W?5 public String getSSiteURL() CNNqS^ct { [> HKRVy return sSiteURL; [mtp-4* } ob7'''i VX)8pV$ 65LtCQ} public void setSSiteURL(String value) *;A ;)' { D \ rns+ sSiteURL = value; [:X@|,1V!L } qTuR[( Mq>
4! b31$i 5{ public String getSFilePath() w.m8SvS&b { BE?]P?r? return sFilePath; pCKP{c=6Q } /2K"Mpf8 K6v~!iiK$ I5"wa:Z public void setSFilePath(String value) ^+(5[z { $?GggP d sFilePath = value; SEgw!2H } h#0n2o # ;$D,w iK}p#"si public String getSFileName() KsULQJ#, { C*Q7@+& return sFileName; :C5w5
Vnj } !Rv ;~f/2 5IU!BQU //@6w;P public void setSFileName(String value) R_EU|a {
j^jC| sFileName = value; S`-I-VS=L } lelmX fJ}e i c{I public int getNSplitter() :w8{BIUN) { S
m(*<H return nSplitter; m
H:Un{, } T!jh`;D+
u$?! WuK<?1meN public void setNSplitter(int nCount) V!:!c]8F { e:G~P
u` nSplitter = nCount; >.wZEQ6QK } 3 Zp<# } <#0i*PM_ +^7cS6"L
!oz{XWE /* Dw
i-iA_q **Utility.java 'aNkU */ Pt"K+]Ym package NetFox; h8V*$ ,:Px(=d4 Yn?beu' public class Utility { 1Ek3^TOv7 u7e$Mq l,|Llb public Utility() CPZ{ { SK}jhm"y Luao?;|U :hICe+2ca } [Qs`@u<% -VohU-6 | //线程睡眠 YdD; Qx#O public static void sleep(int nSecond) $:u*)&"t| { YKe&Ph. try{ -mJs0E*g Thread.sleep(nSecond); QFnuu-82" } ld(60?z>FH catch(Exception e) i9 aR# { !Yc:yF e.printStackTrace (); ^fF#Ej1 } JpXv+V } 9d1km~ c =m#MMc) //日志 NVzo)C8kb public static void log(String sMsg) :'DX
M{ { IJf%OA>v System.err.println(sMsg); &r[f ;|o
} \]>821r CDJ@Tdp !$Uo$?gC public static void log(int sMsg) ij]UAJ}t { Dbn~~P System.err.println(sMsg); e"866vc, } 1(;{w+nM } r(^00hvH |?KYY0 D:k< , { /* K qJE?caw **TestMethod.java kw59`z Es */ ,X/j6\VBO package NetFox; _4oAk @A ^mC~<pP( :uYZ1O public class TestMethod { .5 E)dU ue8 @=} )Q1aAS3 public TestMethod() *o1US { ///xx/weblogic60b2_win.exe >|S@twy try{ 3nBZ+n4z SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); /J^dzvH //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 23CvfP SiteFileFetch fileFetch = new SiteFileFetch(bean); !WXV1S fileFetch.start(); ,OlS>>, } |2'WSAWG catch(Exception e){e.printStackTrace ();} .7.1JT#@A7 w!UF^~
fDYTupKXH } `N[@lV\xp! R\cx-h* TJYhgna public static void main(String[] args) OK4r) { ,LZA\XC new TestMethod(); v
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