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/* @_N -> l **SiteFileFetch.java 0e:K iUr */ c?jjY4u package NetFox; zrnc~I+
import java.io.*; ax>en]rNP import java.net.*; ]y-r
I cpu+"/\ >4LX!^V" public class SiteFileFetch extends Thread { I`Rxijz )bPNL$O u`E_Q8 SiteInfoBean siteInfoBean = null; //文件信息Bean Q`r1pO long[] nStartPos; //开始位置 O=c& long[] nEndPos; //结束位置 Axj<e!{D FileSplitterFetch[] fileSplitterFetch; //子线程对象 m_\CK5T_ long nFileLength; //文件长度 rUx%2O|qu boolean bFirst = true; //是否第一次取文件 3Y=T8Gi# boolean bStop = false; //停止标志 OjrQ[`(E File tmpFile; //文件下载的临时信息 Y<a/(` DataOutputStream output; //输出到文件的输出流 ^6J*yV% =jg!@H=_i //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Y*wbFL6` public SiteFileFetch(SiteInfoBean bean) throws IOException i,;Q { .}Bb
:*@ siteInfoBean = bean; -cY/M~ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 0A5xG& tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); "=4=Q\0PT if(tmpFile.exists ()) w$61+KH K { b$rBxe\ bFirst = false; zx=A3I%7 A read_nPos(); @OwU[\6fc} } >6jyd{ else R`TM@aaS: { _@?]!J[ nStartPos = new long[bean.getNSplitter()]; w:z_EV!& nEndPos = new long[bean.getNSplitter()]; V!]e#QH; } -J? df f4@Dn
>BJ {a%T <WW &S3szhe } @H7dQ,%
`I6)e{5t !X[lNtO public void run() IO v4Zx<) { p)TH^87 //获得文件长度 'y'>0'et //分割文件 Eptsxyz{ //实例FileSplitterFetch Kq-y1h]7H //启动FileSplitterFetch线程
Ge(r6"%7 //等待子线程返回 hrEKmRmF- try{ v,g,c`BjK if(bFirst) 3b%y+?-{\u { CZwZ#WV6 nFileLength = getFileSize(); I&1Mh4yu if(nFileLength == -1) i}+dctg/ { >OiC].1
System.err.println("File Length is not known!"); :Tj,;0#/ } Hej0l^ else if(nFileLength == -2) 4:6@9.VVT { {/R4Q1 System.err.println("File is not access!"); NbkWy } EWH'x$z_q else 7J$ ^R6rh { 3@6f%Dyj for(int i=0;i<nStartPos.length;i++) @jwUH8g1 { 6
D!,vu nStartPos = (long)(i*(nFileLength/nStartPos.length)); {
"$2 } Kpj0IfC,10 for(int i=0;i<nEndPos.length-1;i++) d*q_DV { li/O&@g` nEndPos = nStartPos[i+1]; Q?[k>fu0 } Z~$& h nEndPos[nEndPos.length-1] = nFileLength; LR9dQ=fHS } T(ponLh } $XT&8%|*7 /V&$SRdL* -qx Z3
//启动子线程 Kj-:'jzW fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ijyj}gpWha for(int i=0;i<nStartPos.length;i++) nSd?P'PFg { X)~JX}-L fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), I:mJWe siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), F_V~UX1D nStartPos,nEndPos,i); /xf%Rp4} Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3ck;~Ncj< fileSplitterFetch.start(); ?bN8h)>QQ8 } (VBoZP=W // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Q
v{q:=k siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); HC!$Z`}Y // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", RJBNY;0 nEndPos = " + nFileLength); H6'xXS // fileSplitterFetch[nPos.length-1].start(); w ="I*7c@ n"_EDb M%9PVePOe //等待子线程结束 k}jH //int count = 0; ~rn82an@G //是否结束while循环 )G*Hl^Z;4 boolean breakWhile = false; eJ7A.O o
@*3<_e /i^b;?/1 while(!bStop) ZH&%D*a& { EZBk;*=B write_nPos(); c#CX~ Utility.sleep(500); ;[dcbyu@ breakWhile = true; >@TZYdl !>t|vgW #a}fI for(int i=0;i<nStartPos.length;i++) =A=er1~% { c*1B*_08 if(!fileSplitterFetch.bDownOver) K6|*-Wo. { 'lIT7MK breakWhile = false; 7CwG(c/5 break; M[TgNWl/[ } %&z9^}Vd[ } ,ci
tzh if(breakWhile) JrCm >0g break; Fz>J7(Y.j dc%+f $!KV]] //count++; T4\,b //if(count>4) trgj]|?M // siteStop(); DSET!F;PG } LD^V="d % YU(,83(+ EJZl'CR System.err.println("文件下载结束!"); e ~*qi&,4 } VN`2bp>5I catch(Exception e){e.printStackTrace ();} *K m%Vl } 6 D~b9e 4[+n;OI -?'u"*#1, //获得文件长度 m=j7 vb public long getFileSize() )v
['p { uCUQxFp int nFileLength = -1; ?~u"w OH' try{ {!6!z, URL url = new URL(siteInfoBean.getSSiteURL()); qZA?M=NT?
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Ibpk\a?A{ httpConnection.setRequestProperty("User-Agent","NetFox"); G9}[g)R* Mx$VAV^\ 9\Yj`,i5 int responseCode=httpConnection.getResponseCode(); xPsuDi8u if(responseCode>=400) htMpL {
]km8M^P processErrorCode(responseCode); H={fY:% return -2; //-2 represent access is error T#er5WOH } lR;<6 1 ht4LRFi \{NeDv{A String sHeader; >JC.qjA 3-LO ~u}[VP for(int i=1;;i++) wm@1jLjrQ { $WTu7lVV[1 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); #2x\d //Utility.log(in.readLine()); ~Bj-n6 QDE sHeader=httpConnection.getHeaderFieldKey(i); \?
MuORg if(sHeader!=null) eFZ`0V0 { f9OVylm if(sHeader.equals("Content-Length")) (:E^} &A { Jq?ai8
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); Ep?a1&b break; C{Aeud #5 } u5T\_0 } %2/WyD$U else mL3'/3-7:V break; }54\NSj0 } Ct
#hl8b: } #T
!YFMh; catch(IOException e){e.printStackTrace ();} %&e5i catch(Exception e){e.printStackTrace ();} /Q{Jf+>R> 0jj
}jw Hhfqb"2on Utility.log(nFileLength); 80:na7$)# [f-
#pew Cn+TcdHX return nFileLength; c;(}Ih(# } ;k!Ej-( rQ~%SUM7 63F0Za}h //保存下载信息(文件指针位置) \n+`~< i private void write_nPos() B>9D@fmzs { bjD0y
cB[ try{ Xo]FOJ5 output = new DataOutputStream(new FileOutputStream(tmpFile)); d{9jd{
_#G output.writeInt(nStartPos.length); 7J0PO}N for(int i=0;i<nStartPos.length;i++) s
g6 { S{fNeK // output.writeLong(nPos); c3K(mM: output.writeLong(fileSplitterFetch.nStartPos); E/5w
H/ output.writeLong(fileSplitterFetch.nEndPos); T[ mTA>d } 9J l9\y9 output.close(); G0a UZCw } @bD,^3 U catch(IOException e){e.printStackTrace ();} dR $@vDm catch(Exception e){e.printStackTrace ();} {Ivu"<`L3 } ~EX/IIa{ B4U+q|OD# !aIIjWz] //读取保存的下载信息(文件指针位置) 5r`g6@ private void read_nPos() ! =|{ { Udd|. J Rd try{ X*d,z~k%*d DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); @0Tm>s int nCount = input.readInt(); xr.fZMOh4 nStartPos = new long[nCount]; }bjTb! nEndPos = new long[nCount]; .5_w^4`b for(int i=0;i<nStartPos.length;i++) 7\5 [lM { m#'u;GP]k nStartPos = input.readLong(); ii{5z;I]X nEndPos = input.readLong(); ,X9Y/S
l } CX\#
|Q8q input.close(); L(AY)gB } gIRFqEz@o catch(IOException e){e.printStackTrace ();} TLO-$>h catch(Exception e){e.printStackTrace ();} 8G(wYlxi } ;~xkT' KA%tVBl o2F6K*u} private void processErrorCode(int nErrorCode) coU`2n/ { zXp{9P\c System.err.println("Error Code : " + nErrorCode); LH0\SmhU } 8 I,(\<Xv "64pVaT4 H:p(C?tk{ //停止文件下载 fa"eyBO50 public void siteStop() E)>6}0P { ]$KH78MTW bStop = true; /5zzzaj{ for(int i=0;i<nStartPos.length;i++) kw?RUt0-V fileSplitterFetch.splitterStop(); |p3]9H Rp9uUJ 6o k6G23p[9 } KHdj#3<AR } 8Ck:c45v //负责部分文件的抓取 -OVJ] **FileSplitterFetch.java }7Pd\t G] */ (3=. 3[ package NetFox; [wIyW/+ >(d+E\!A vhKeW(z import java.io.*; 1~ZDHfd5 import java.net.*; ^c.b@BE Q_M2!qj *>Om3[D public class FileSplitterFetch extends Thread { Z1OX9]##r [o>/2 pE15[fJ` String sURL; //File URL M.H4ud long nStartPos; //File Snippet Start Position ,>"1'i&@ long nEndPos; //File Snippet End Position *4=Fy:R]O int nThreadID; //Thread's ID Vv6xVX boolean bDownOver = false; //Downing is over 4}#*M2wb boolean bStop = false; //Stop identical AF **@iG FileAccessI fileAccessI = null; //File Access interface wBCnP f)N67z6 @CWfhc-Ub public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 'p Z~3q { ~hP[[? this.sURL = sURL; <}.)kg${O this.nStartPos = nStart; dk;Ed this.nEndPos = nEnd; AGOK%[[Ws nThreadID = id; }2DeqY fileAccessI = new FileAccessI(sName,nStartPos);//定位 GTJ\APrH } C,jPr )6) R)G'ILneV vWzNsWPK"{ public void run() PMkwY{.u { zgVplp while(nStartPos < nEndPos && !bStop) Og-Mnx3 { uodO^5"- `4l>%S8y: %3"3OOT7 try{ V}@c5)(j URL url = new URL(sURL); bCA3w%,kM HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]:]2f9y httpConnection.setRequestProperty("User-Agent","NetFox"); )mwY]
! String sProperty = "bytes="+nStartPos+"-"; nef-xxXC^I httpConnection.setRequestProperty("RANGE",sProperty); uCmdNY Utility.log(sProperty); 7|65;jm+ lm-ubzJN v
mw7H InputStream input = httpConnection.getInputStream(); r|0C G^:C //logResponseHead(httpConnection); Re,0RM\ ^!Bpev ,gD30Pylz byte[] b = new byte[1024]; mX,#|qLf int nRead; "ZT=[&2 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) v-OGY[|97 { $0cMrf@ nStartPos += fileAccessI.write(b,0,nRead); =oiY'}%(i //if(nThreadID == 1) "P0o)g+{ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #v~zf@<KLB } |!IJ/ivEgw d5sGt# BWw7o{d Utility.log("Thread " + nThreadID + " is over!"); |%zhwDQ. bDownOver = true; lWnV{/q\X //nPos = fileAccessI.write (b,0,nRead); TSE(Kt } C8NbxP catch(Exception e){e.printStackTrace ();} L\hPw{) } `1pri0! } )?Jj#HtW /?2yo{Fg %;^6W7 //打印回应的头信息 f\/};a public void logResponseHead(HttpURLConnection con) 7_q"%xH { Uf_w
o for(int i=1;;i++) a ,W5T8 { "@`M>)*o String header=con.getHeaderFieldKey(i); 0ZPPt(7 if(header!=null) *4A.R&Vu //responseHeaders.put(header,httpConnection.getHeaderField(header)); `Gsh<.w!7 Utility.log(header+" : "+con.getHeaderField(header)); ^_2Ki else NW!e@;E+i break; Km\M/j| } !M3IuDN } :!{aey uiHlaMf `EWeJ(4Z@ public void splitterStop() )Tb{O { b/ZX}<s(1= bStop = true; S7N54X2JwL } @,zBZNX
y $o]suF;3 EXb{/4 } %y8w9aGt zU1rjhv+ j:{<
/* & qd:o} **FileAccess.java 5z El`h *//文件访问(定位,写) W,w g@2 package NetFox; |#!25qAT import java.io.*; G-,PsXSwe :5@7z9 > E*RP8 public class FileAccessI implements Serializable{ xx/DD%IZ |k?,4
Pk //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 [C7:Yg7 RandomAccessFile oSavedFile; .fQDj{ long nPos; TzX>d<x Vvv
-f }8x[ public FileAccessI() throws IOException A$1pMG~as { o"'VI4 this("",0); Or6'5e?N } 5{cAawU. qZ8lU rV2}> k public FileAccessI(String sName,long nPos) throws IOException n,xK7icYNQ { 1l1X1 oSavedFile = new RandomAccessFile(sName,"rw"); vLpE|QZ s this.nPos = nPos; ~(hmiNa; oSavedFile.seek(nPos); D(Xv shQ } |mci-ZT 5|H?L@_9 vz@QGgQ9~2 public synchronized int write(byte[] b,int nStart,int nLen) ;5 IS58L { X>*zA?: int n = -1; G. <9K9K try{ C'zMOR6c oSavedFile.write(b,nStart,nLen); `=CF
|I n = nLen; -U;s,>\) } KZD&Ih(vC catch(IOException e) tK8\Ib J { E}"&?oY e.printStackTrace (); %M'"%Yn@(y } X}p4yR7' BAzqdG lkw[Z}\ return n; L i< c } k$I[F<f Dw.>4bA. B5tJ|3! } ,ew<T{PL ",~3&wx EE%OD~u&9# /* ?$r+#'asd( **SiteInfoBean.java 3&2,[G04 */ U][.ioc package NetFox; bF B;N+> xn6E f" hXMC!~Th public class SiteInfoBean { EaP#~x +S3'ms .cu5h private String sSiteURL; //Site's URL 9N'$Y*. d< private String sFilePath; //Saved File's Path CQv
[Od private String sFileName; //Saved File's Name -R&h?ec private int nSplitter; //Count of Splited Downloading File .X:{s,@ [Q^kO; w)!(@}vd public SiteInfoBean() \&e+f#!u {//nSplitter的缺省值为5 HkrNh>^= //default value of nSplitter is 5 c/g(=F__[ this("","","",5); UejG$JyHP } B]]M?pS 6j`
waK MJ92S( public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 6^ /C+zuX { }n:-nB4 sSiteURL= sURL; tQwbIX-7/ sFilePath = sPath; *DG*&Me sFileName = sName; v $pARt this.nSplitter = nSpiltter; yK}#|b'cM dC.uK^FuJ c6?5?_ne } `
0\hm` xRaYm v`v+M4upC public String getSSiteURL() ?]P&3UU>0z { "BzRLg!J return sSiteURL; Zr$PSp} } _$fxo D9 E6@+w. VVO A\SbuRty public void setSSiteURL(String value) "%}PVO! { I7[+:?2 sSiteURL = value; e?f[t*td } yGN<.IP75 "CZ`hx1|^ `qfVgT=2 public String getSFilePath() jj.yB#T { g5T~%t5lo return sFilePath; xQmk2S`
y } y XS/3_A{ ! Noabt }4bwLO public void setSFilePath(String value) Qs,LK(1 { yLY2_p-X sFilePath = value; G1P m!CM= } k@wT,?kD 9Y/c<gbY :b.#h7Qt< public String getSFileName() ?rv+ydR/q { '!y ^ return sFileName; }>h?W1 } >i=O =w B!8]\D [IHT)%>E8& public void setSFileName(String value) (jQL? { *Qyw
_Q sFileName = value; U+'?#"
J8( } vn
kktD'n 7p~@S4 2&=;$2?} public int getNSplitter() ]jy6C'Mp { 1x\%VtO>\b return nSplitter; b"f4}b } *^NC5=A(d ls/:/x(5d TuX#;!p6 public void setNSplitter(int nCount) lSbAZ6 { S:t7U% nSplitter = nCount; u`("x5sa } "+)ey>_ } DE. Pw+5<. bu$5gGWVf %GHHnf%2Z /* #b{otc) **Utility.java LoTq2 / */ GLk7#Y package NetFox; t(ZiQ<A }~A-ELe: A70_hhP public class Utility { .oSKSld @NV$!FB< S'?XI@t[ public Utility() Z0-W%W { ,a?em'= Nzr zLK WM>9sJf } d;'@4NX5+ w0
"h,{ //线程睡眠 m&;
t; public static void sleep(int nSecond) >~ne(n4qy { |7f}icXKur try{ "e(OO/EZS Thread.sleep(nSecond); ss-Be } e"2 wXd_} catch(Exception e) Gq0~&6 { ,Q}/#/ e.printStackTrace (); 7OW;omT` } OP<@Xz } wRLkO/Fw Kj'm<]u //日志 Rfgc^ 3:j public static void log(String sMsg) VJ1si0vWtq { ){gO b System.err.println(sMsg); (hmasy6hM } &5zUk++ i5-V$ Qh Q&n|tQ*4 public static void log(int sMsg) iv56zsR { KiCZEA
System.err.println(sMsg); 2-{8+*_' } .
vYGJ8(P } 8n2*z LkNfcBa_ Mu{mj4Y{ /* (:@qn+
a **TestMethod.java 2{{M{#}S. */ C~6aX/: package NetFox; f2yc]I<lr~ b7"pm)6 SHhg&~B public class TestMethod { A
#ZaXu/:X *d(wOl5[ a{]1H4+bQ public TestMethod() hBN!!a|l { ///xx/weblogic60b2_win.exe FJ#V"|} try{ _|~2i1Ms, SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); LsBDfp5/ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); drN^-e SiteFileFetch fileFetch = new SiteFileFetch(bean); 8zZR%fZ fileFetch.start(); q9!5J2P } 8mx5K-/,y^ catch(Exception e){e.printStackTrace ();} OPKm^} )zr/9aV sRY: 7>eg } +mAMCM2N T@k&YJ
t6js@Ih public static void main(String[] args) :*Ckq~[Hg { vA+ RZ new TestMethod(); `W|2Xi=^5 } "7gS*v,r } ;'cv?3Y 点击下载更多相关资料
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