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/* <E>7>ZL **SiteFileFetch.java cgs3qI */ -,QKTxwo> package NetFox; Cf0|Z import java.io.*; ;Y'8:ncDn import java.net.*; 6|
*(dE2x( 7q%|4Z-~ J}Qs"+x public class SiteFileFetch extends Thread { s~=KhP~ qr)v'aC3 =[]x\&@t SiteInfoBean siteInfoBean = null; //文件信息Bean 1l/AKI(! long[] nStartPos; //开始位置 }_{y|NW long[] nEndPos; //结束位置 *A?8F"6> FileSplitterFetch[] fileSplitterFetch; //子线程对象 .P)s4rQ\ long nFileLength; //文件长度 qDnCn H boolean bFirst = true; //是否第一次取文件 {I0w`xe boolean bStop = false; //停止标志 j)jCu ;` File tmpFile; //文件下载的临时信息
h6u2j p(+ DataOutputStream output; //输出到文件的输出流 XC|*A$x, !1a}| !Zn //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) P<%v+O public SiteFileFetch(SiteInfoBean bean) throws IOException /8xH$n&xoC { 9wL!D3e
{Q siteInfoBean = bean; 1ZT^)/ G //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); SQ}S4r tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); /~40rXH2C if(tmpFile.exists ()) {7vgHutp { :?HSZocf bFirst = false; `-VG ?J read_nPos(); JC=dYP} } bqSMDK else HHz;0V4w? { }@d>, 1DU nStartPos = new long[bean.getNSplitter()]; {!L=u/qs" nEndPos = new long[bean.getNSplitter()]; l+%Fl=Q2em } ]?[zx'| O?CdAnhQc` /K7Bae5h 6`acg'sk> } jDR')ascn H4t)+(:D' lbRzx4=\y public void run() ;; :">@5 { 5J
ySFG3 //获得文件长度 _=pWG^a //分割文件 # Mu<8`T- //实例FileSplitterFetch W3)\co //启动FileSplitterFetch线程 13H;p[$ //等待子线程返回 /ip lU try{ j_p`Ng if(bFirst) :vpl+)n { xk& NAB nFileLength = getFileSize(); RT,:hH if(nFileLength == -1) wTxbDT@ H5 { GMl"{Oxo& System.err.println("File Length is not known!"); H<g 1m } /jM_mrpz else if(nFileLength == -2) i0>]CJG { 2HD:JdL System.err.println("File is not access!"); q]CeD } 1w`2Dt else \^jjK,OK { C0QM#"[ for(int i=0;i<nStartPos.length;i++) k)cP! %z { 6hO-H&r++ nStartPos = (long)(i*(nFileLength/nStartPos.length)); *Ddi(` } [
7g>< for(int i=0;i<nEndPos.length-1;i++) >%u@R3PH] { AotCX7T2T nEndPos = nStartPos[i+1]; #.H}r6jqs } /'ZKS T4 nEndPos[nEndPos.length-1] = nFileLength; ow/U } \8{\;L C } 1c$vLo832 J/ vK6cO\ nq1
'F //启动子线程 V7EQ4Om:It fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; TN\|fzj for(int i=0;i<nStartPos.length;i++) R:M,tL-l { V,Q4n%h1. fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 6kN:* siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 0Qnd6mb nStartPos,nEndPos,i); \9`#]#1bx5 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); -U>y fileSplitterFetch.start(); 7/aOsW"6 } 1yMr~Fo // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7VAJJv3 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); b5<okICD // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ~Wei|,w'< nEndPos = " + nFileLength); /`3#4=5- // fileSplitterFetch[nPos.length-1].start(); FQk!d$BG ?{6s58Q{ I`T1Pll //等待子线程结束 BJk
Z2= //int count = 0; zU&L.+
//是否结束while循环 {e"dm5 boolean breakWhile = false; (5a1P;_Y rQb7?O@- -R
b{^/ while(!bStop) Y%@hbUc}x9 { eVJ^\z:4 write_nPos(); @ }&_Dvf Utility.sleep(500); ml0*1Dw breakWhile = true; Z.1>
kZ 6@V~0DG v7,$7@$:\ for(int i=0;i<nStartPos.length;i++) 6~xBi(m` { Ls}7VKl' if(!fileSplitterFetch.bDownOver) qtMD CXZ^n { PyBD breakWhile = false; hr/o<#OW break; r|eZv<6 } @kxel`,$e } IeP
WOpj3 if(breakWhile) TB!((' break; *2e!M^K< }r%X`i| O"Q7Rx //count++; sOpep //if(count>4) <%P2qgz5 // siteStop(); D+RiM~LH8 } xr%#dVk Ln!A:dP}c- [9o4hw System.err.println("文件下载结束!"); G^;>8r } KOhA) catch(Exception e){e.printStackTrace ();} fuMJdAuY7d } Pw[g !)pdamdA O9"/
kmB //获得文件长度 k~.&j"K public long getFileSize() [{
~TcT { t9cl"F= int nFileLength = -1; =0
try{ ~ G6"3" URL url = new URL(siteInfoBean.getSSiteURL()); .iHn5SGA HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); >V$ Gx>I httpConnection.setRequestProperty("User-Agent","NetFox"); ])}]/Qw Qk9 76 }H"kU2l int responseCode=httpConnection.getResponseCode(); eE@&ze>X if(responseCode>=400) }4//@J?: { g(|{')8?d processErrorCode(responseCode); T~4N+fK return -2; //-2 represent access is error Qk1xUE } hA1-){aw3q .(CP. d /i]y$^ String sHeader; ,9D+brm Qf $|_&| x@Hd^xH` for(int i=1;;i++) .2)
=vf'd { 04U")-\O //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); N<(.%<! //Utility.log(in.readLine()); tjT>VwqH sHeader=httpConnection.getHeaderFieldKey(i); [U/(<?F{( if(sHeader!=null) ._O { 3?n>yS if(sHeader.equals("Content-Length")) w= P9FxB { L+}n@B nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Iw<i@=V break; tptN6Isuh } OTDg5:> } H1n1-!%d else NMOut@ break; QPtGdd } }g7]?Ee } n\z,/'d" catch(IOException e){e.printStackTrace ();} Z|"p*5O, catch(Exception e){e.printStackTrace ();} !> }.~[M ,#?uJTLH T"7~AbgNU Utility.log(nFileLength); $(e#aHB X;v$5UKU '6y}ZE[ return nFileLength; mtz#}qD66 } YH&bD16c3 3jB$2: # YuZ"s55zU{ //保存下载信息(文件指针位置) 3psU?8( private void write_nPos() Z_1U9+, { 7\FXz'hA try{ V-'K6mn; output = new DataOutputStream(new FileOutputStream(tmpFile)); fjk\L\1 output.writeInt(nStartPos.length); W6 H,6v for(int i=0;i<nStartPos.length;i++) l<0}l^C. { X4l@woh%
// output.writeLong(nPos); ';Zi@f" output.writeLong(fileSplitterFetch.nStartPos); ~vlype3/EF output.writeLong(fileSplitterFetch.nEndPos); |w aIpB( } $Iv2j">3) output.close(); W"^wnGa@a } Tou/5?#%e catch(IOException e){e.printStackTrace ();}
]$b[`g& catch(Exception e){e.printStackTrace ();} b306&ZVEk } 6`vC1PK^ M" ^PW,k ./Q, //读取保存的下载信息(文件指针位置) ib{-A& private void read_nPos() N_:qRpp6i { bwiPS1+); try{ EBz}|GY; DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); [(1c<b2r int nCount = input.readInt(); \%^%wXfp nStartPos = new long[nCount]; ]BR,M4 nEndPos = new long[nCount]; U!U$x74D5 for(int i=0;i<nStartPos.length;i++) sBrI}[oyx { {ZY+L;eg1 nStartPos = input.readLong(); P) 3mX.(} nEndPos = input.readLong(); .`>y@p! } J{^RkGF input.close(); E4m` } ,|&9M^ catch(IOException e){e.printStackTrace ();} A\8}|r(>9E catch(Exception e){e.printStackTrace ();} K2%w0ohC } ,^#yo6- |$5[(6T| 9]q:[zm^ private void processErrorCode(int nErrorCode) o sKKt?^? { a!O0,y System.err.println("Error Code : " + nErrorCode); 5mb]Q)f9- } x c{hC4^V [l,Ei? 3}e%[AKh //停止文件下载 &x3VCsC\| public void siteStop() w^t/9Nasi { XQw>EZdj_N bStop = true; eq UME for(int i=0;i<nStartPos.length;i++) h:9Zt0, fileSplitterFetch.splitterStop(); #8)*1? ;Iq/l%vX l+V>]?j } K4kMM*D } ,G)r=$XU //负责部分文件的抓取 o}ZdTf= **FileSplitterFetch.java 812$`5l */ t. ;LnrY package NetFox; ~?(N rS;Dmm 7Hs%Cc" import java.io.*; EY tQw(!Q import java.net.*; fk&8]tK4 ^pUHKXihD &Y }N|q- public class FileSplitterFetch extends Thread { irfp!(r 6fw(T.Pe DY`kx2e! String sURL; //File URL ;3@cy|\: long nStartPos; //File Snippet Start Position (SvWvm long nEndPos; //File Snippet End Position {E@Lft- int nThreadID; //Thread's ID A,a.8!*}vd boolean bDownOver = false; //Downing is over S_Wrw z boolean bStop = false; //Stop identical ,N)/w1?I FileAccessI fileAccessI = null; //File Access interface @H=:)*; x@[rms
MjU6/pO}L public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException .hifsB~ { Om5Y|v"* this.sURL = sURL; s=;uc]9g this.nStartPos = nStart; w 47tgPPk this.nEndPos = nEnd; n^g|Ja nThreadID = id; (=om,g} fileAccessI = new FileAccessI(sName,nStartPos);//定位 _WRFsDZ' } B\XKw' sc}~8T k=jk`c{<[ public void run() r8xv#r 1 { Y/*mUS[oa while(nStartPos < nEndPos && !bStop) $69oV: { =o$sxb
E( ye,>A. R21b!Pd\ try{ Kkm>e{0)AY URL url = new URL(sURL); >7QvK3S4% HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); =Lf,?"S httpConnection.setRequestProperty("User-Agent","NetFox"); XzEc2)0'v String sProperty = "bytes="+nStartPos+"-"; 7Mg=b%IYs httpConnection.setRequestProperty("RANGE",sProperty); ci?qT,& Utility.log(sProperty); 6V7B;tB %yv<y+yP~ ]d!
UJ&<? InputStream input = httpConnection.getInputStream(); SMpH._VFeE //logResponseHead(httpConnection); gMzcTmbc8 zdYy^8V|z =\H!GT byte[] b = new byte[1024]; ,Y/ g2
4R int nRead; !:q/Ye3. while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) t%E!o0+8Z { sTn<#l6 nStartPos += fileAccessI.write(b,0,nRead); 0.8 2kl //if(nThreadID == 1) }&wUr>= // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); &E.^jR~* } ewctkI$,5 tFp Ygff< s~5[![1
K Utility.log("Thread " + nThreadID + " is over!"); x-^`~p bDownOver = true; XovRg, //nPos = fileAccessI.write (b,0,nRead); YS/Yd[ e } nU7>uU catch(Exception e){e.printStackTrace ();} v>Q#B } i3@)W4{ } ~a ]+#D x|pg"v&[ _( {hc+9p //打印回应的头信息 {xXsBh
Y public void logResponseHead(HttpURLConnection con) >n'o*gZM { 1H6<[iHW for(int i=1;;i++) "@iK'
c^ { :bwjJ}F String header=con.getHeaderFieldKey(i); y1dDO2mA if(header!=null) n*[XR`r} //responseHeaders.put(header,httpConnection.getHeaderField(header)); ChGYTn`X Utility.log(header+" : "+con.getHeaderField(header)); fF7bBE)L/| else `d5%.N break; 1Q<^8N)pf } )u[emv$ } A kC1z73< $4h 5rC g0 ywGd> @ public void splitterStop() PQ5QA61 { }dgfqq bStop = true; 4T|b
Cs?e } kmP]SO?tx >=:&D)m" "s0)rqf< } 2$+bJJM WW4vn|0v v%+:/m1 /* Br1&8L-|% **FileAccess.java O}-jCW;K *//文件访问(定位,写) &Sw%<N*r package NetFox; u0|8Tgf import java.io.*; }B\a<0L/ g{OwuAC_ gQWa24 public class FileAccessI implements Serializable{ $'BSH4~|. Dfg2`l //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 X[]m _@ v RandomAccessFile oSavedFile; Mo?~_|} long nPos; n}F&1Z 3!XjtVhK?I $q6BP'7 public FileAccessI() throws IOException /uPcXq:L~ { ?Y-%'J( this("",0); LlX{#R } eKE#Yr
d=x xjfV?B'Y}V :W!7mna public FileAccessI(String sName,long nPos) throws IOException ]m
g)Q:d, { G&D7a/G\ oSavedFile = new RandomAccessFile(sName,"rw"); +)!Y rKuu this.nPos = nPos; Q sZx)
bO oSavedFile.seek(nPos); dP#|$1 } ub^h&=\S q)X$^oE!6 OK[T3/v, public synchronized int write(byte[] b,int nStart,int nLen) ^t` k0< { -lbm*
-( int n = -1; XG{{ 2f try{ $$|rr G oSavedFile.write(b,nStart,nLen); qLn/2 n = nLen; +T|JK7 } [ey:e6,T9 catch(IOException e) |'P]GK { SQBa;hvgM e.printStackTrace (); &]" } sGyeb5c b LlKe50 G_;)a]v8) return n; UW N*j_9i } D>/0v8
d"}k!
0m h1B? 8pD } 6IBgt!=, jF ^~p9z D^yRaP*|7 /* EN$2,qf **SiteInfoBean.java +o\:d1y */ [B+yyBtx package NetFox; U{7w#>V
. nxUJN1b!N xbdN0MAU public class SiteInfoBean { {@eJtF+2 $@z5kwx:P v*'^r)Q[p private String sSiteURL; //Site's URL .<jr0,i private String sFilePath; //Saved File's Path o)Iff)m$ private String sFileName; //Saved File's Name /xsF90c\h private int nSplitter; //Count of Splited Downloading File d74d/l1*{ n!YKz"$ 8J:}%DaxL public SiteInfoBean()
@G8lr {//nSplitter的缺省值为5 kDEPs$^ //default value of nSplitter is 5 GR&z, this("","","",5); -8; 7Sp1 } 0t Fkd 8K.R= ?{/4b:ua public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 6VS4y-N { TT2d81I3m sSiteURL= sURL; ti5mIW\ sFilePath = sPath; s%qF/70' sFileName = sName; uD}2<$PP this.nSplitter = nSpiltter; k`So -e- 0+?7EL~ /I1h2E } u$>4F|=T Tu$f? 6ys
&zy public String getSSiteURL() mtJ9nC { fa++MNf}3 return sSiteURL; ZjgsR|i } W }8'Pf ).Fpgxs I/a/)No public void setSSiteURL(String value) +aJ>rR { ,VCyG:dw sSiteURL = value; v9:9E|,U+ } ur3(HL kddZZA3` q#T/
public String getSFilePath() d*jMZ%@uS { OHeT,@(mh return sFilePath; v16JgycM } Q?nN!eT *G{^|z X#*JWQO= public void setSFilePath(String value) B.dH(um { ex::m& sFilePath = value; =osv3>&q } +?:7O=Y z`!XhU %K>,xiD) public String getSFileName() }])oM|fgO { XiL~TCkx4 return sFileName; |2RC# ]/-Y } ,eTUhK I(V!Mv8j t; 4]cg:_ public void setSFileName(String value) ?)kG A$m# { i(AT8Bo2 sFileName = value; _J Hd9)[ } =h0,?]z <~6h|F8 cl]Mi
"3_ public int getNSplitter() 5_- (<B { v*r7Zz6l return nSplitter; ToJ$A`_!` } z.kvX+7' (BTVD,G EK;YiJ public void setNSplitter(int nCount) #:[t^} { qv]}$WU nSplitter = nCount; vgsJeV`}I } V!lZ\) } g]4(g<:O
>Db;yC& Ov-icDMm /* OW3sS+y **Utility.java w2
a1mU/ */ >4#)r8;dx package NetFox; Y0x%sz5 5Ow[~p"l< vR s,zL$W public class Utility { TygW0b 1 8n'B6hi :c8&N-` public Utility() E^vJ@O { \#Pfj&* .}O[dR _a6[{_Pc } ~yH?=:>U =p*]Az //线程睡眠 AS
=?@2 q public static void sleep(int nSecond) ^>jwh { .?R!DYC` try{ jz
qyk^X Thread.sleep(nSecond); 7]blrN] } 4)A#2 catch(Exception e) ,Wk?I%> { ]j`c]2EuP e.printStackTrace (); ~:Ll&29i } SKkUU^\#R` } j`~Ms> kQEy#JQmB //日志 tasUZ#\6 public static void log(String sMsg) BW 4%l { 9{
>Ui System.err.println(sMsg); ^pQCNKLBY } y#U+c*LB D;;!ODX$? gBC@38|6) public static void log(int sMsg) ,.OERw { G+X
Sfr System.err.println(sMsg); xlA$:M& } P} 0%-JC } v":x4!kdX b:tob0TB Zc
W:6po> /* BT}!W`
**TestMethod.java 3E!|<q$z */ 1Cv- package NetFox; ?u "
4@ mF,Y?ax K`u(/kz/< public class TestMethod { `HZ;NRr |}(`kW FaDjLo2'o public TestMethod() mP0yk| { ///xx/weblogic60b2_win.exe m^ tFi7c try{ y:~ZLTAv SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); C|}iCB //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); -"=U?>( SiteFileFetch fileFetch = new SiteFileFetch(bean); `f*Q$Ulqx fileFetch.start(); #a'Ex=%rM } v(ZYS']d2 catch(Exception e){e.printStackTrace ();} tjdaaN#,V L?WFmn gG*X^Uo } ZWc]$H? ykV
5 j g8fU public static void main(String[] args) 57umx`m { jRJn+ new TestMethod(); 0n;<
ge&~R } ;" dV"W
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