-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* <D.E.^Y **SiteFileFetch.java 1eD#-tzV */ 3Y)&[aj package NetFox; 9<u&27. import java.io.*; !, BJO3& import java.net.*; 6\.g,>
e3ZRL91c ;0dH@b public class SiteFileFetch extends Thread { 05 6K) E GrLxERf nX (bVT4i SiteInfoBean siteInfoBean = null; //文件信息Bean @&m [w'tn long[] nStartPos; //开始位置 ArtY;.cg% long[] nEndPos; //结束位置 BQ6$T& FileSplitterFetch[] fileSplitterFetch; //子线程对象 g$uiwqNA% long nFileLength; //文件长度 >
SZ95@Oh boolean bFirst = true; //是否第一次取文件 PB^rniYh boolean bStop = false; //停止标志 E!Q@AZ File tmpFile; //文件下载的临时信息 I0F[Z\U DataOutputStream output; //输出到文件的输出流 2E-Kz?,:[ >&.N_,* //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) D9g*+KM& public SiteFileFetch(SiteInfoBean bean) throws IOException <#:iltO { $*{,Z<|2 siteInfoBean = bean; zu}uW,XH- //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); K>'4^W5d, tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); oc"p5Y3,Os if(tmpFile.exists ()) I;XM4a { 9BakxmAc bFirst = false; /uWUQ#9 read_nPos(); YHN6/k7H } \l=A2i7TQ else Jj]<SWh {
iK4\N;H nStartPos = new long[bean.getNSplitter()]; |}77'w : nEndPos = new long[bean.getNSplitter()]; mCnl@ } ^h_rE
|c ar@,SKU'K #`@)lU+/ htYfIy{5w } t]sk[ 3x(Y+
ymP 7 :\J2$P public void run() jXx~5 { BHpay //获得文件长度 R Q8"vF# //分割文件 -.)f~#8 //实例FileSplitterFetch #: EhGlq8 //启动FileSplitterFetch线程 bv7)[,i //等待子线程返回 rE"FN~9P try{ [ !~8TF if(bFirst) |xb;#ruR6 { E.C=VfBW nFileLength = getFileSize(); UaG&HGg]! if(nFileLength == -1) A/ zAB3 { iJZvVs', System.err.println("File Length is not known!"); 7yG%E } 3Q&@l49q else if(nFileLength == -2) z>W?\[E<2 { b 2\J<Nw System.err.println("File is not access!"); :EPe,v RT } )1R[~]y else XcbEh { 9n5uO[D for(int i=0;i<nStartPos.length;i++) u$qasII { af[dkuv nStartPos = (long)(i*(nFileLength/nStartPos.length));
ndyIsR } ./tZ*sP: for(int i=0;i<nEndPos.length-1;i++) _+}o/449 { U*EBH nEndPos = nStartPos[i+1]; 4tkb7D
q } akj#.aYk nEndPos[nEndPos.length-1] = nFileLength; E?&YcVA } R<3 -!p1v } iQ;lvOja 7#HSe#0J uv$utu><
* //启动子线程 %f\j)qw fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; $5#DU__F/ for(int i=0;i<nStartPos.length;i++) P e}
T { ,\T `gh fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ZRGe$HaU siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), jJ
RaY3 nStartPos,nEndPos,i); X&Ospl@H Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); <UIE-# fileSplitterFetch.start(); >y!R}`&0^t } 'K23oQwDB // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), k/Urz*O siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); FrRUAoFO // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", A(XX2f!i nEndPos = " + nFileLength); }Oe4wEYN) // fileSplitterFetch[nPos.length-1].start(); XB[EJGaX B$q5/ L$} 1n)YCSA //等待子线程结束 Bi/E{k, //int count = 0; tHvP0RxM //是否结束while循环 )*}?EI4. boolean breakWhile = false; @]]\r.DG V2yX;u G[d]t$f= while(!bStop) T7Y+ WfYh { $|@-u0sv write_nPos(); ;iN[du Utility.sleep(500); 1yS:` breakWhile = true; '^Q$:P{G? ;+3@S`2r /*6[Itm_h for(int i=0;i<nStartPos.length;i++) L8pKVr { ihct~y-9W if(!fileSplitterFetch.bDownOver) ?5[$d{ Gjl { !6 kn>447Y breakWhile = false; 3z k},8fu break; K,bX<~e5 } v# fny } _GoFwVO if(breakWhile) T0o0_R break; r0<zy_d' LCSJIt uesIkJ^Q[ //count++; j3R}]F'C* //if(count>4) =QwT)KRB% // siteStop(); dA#'HMh@ } Nc^:v/(P }+:X= @Z@ 7Zft]C?|@ System.err.println("文件下载结束!"); @6y)wA9Yx } x45F-w{ catch(Exception e){e.printStackTrace ();} wF-H{C' } H:q;IYE+a U]M5&R=? a3[,3 //获得文件长度 Eh *u6K)Z public long getFileSize() \h}sA { #=ko4?Wr( int nFileLength = -1; }'p*C$ try{ MMQ\V(C URL url = new URL(siteInfoBean.getSSiteURL()); 0Y!~xyg/ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); I#(?xHx
httpConnection.setRequestProperty("User-Agent","NetFox"); EQy~ ^7V B c&g*nDuDj 0.~s>xXp int responseCode=httpConnection.getResponseCode(); E,/nK if(responseCode>=400) QwnqysNx4 { S`h yRw processErrorCode(responseCode); #Fh:z4 return -2; //-2 represent access is error =s:Z-*vy! } V|2[>\Cv 3'55!DE d263#R String sHeader; )SaMfP1=v =|V#~p* ^ b{~]I for(int i=1;;i++) >=Na, D { Ibv`/8xh //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); p3IhK> //Utility.log(in.readLine()); )|&FBz; sHeader=httpConnection.getHeaderFieldKey(i); Q*9Y.W. 8 if(sHeader!=null) ?{1& J9H { $L72%T if(sHeader.equals("Content-Length"))
C5TC@ w1* { |4Os_*tRKU nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader));
d-I&--"ju break; lgefTT GX) } DNRWE1P2bg } Go7 oj'" else ( n!8>>+1C break; 5QG?*Z~?7 } i&L!?6 5-f } =pb ru=/ catch(IOException e){e.printStackTrace ();} Nfd'|# catch(Exception e){e.printStackTrace ();} >B$B|g~ P\$%p-G X(;WY^i! Utility.log(nFileLength); <@>l9_=R Bf$`Hf6 wd2z=^S~ return nFileLength; B*}:YV } u y13SkW U ?6.UtNf 'On%p|s)H //保存下载信息(文件指针位置) K#x|/b'5d private void write_nPos() WS\Ir-B { S3y('
PeF try{ o}Q3mCB output = new DataOutputStream(new FileOutputStream(tmpFile)); *dxE
( dP output.writeInt(nStartPos.length); l-8rCaq&J for(int i=0;i<nStartPos.length;i++) pE{Ecrc3| { B#o6UO\ // output.writeLong(nPos); $g
}aH(vf output.writeLong(fileSplitterFetch.nStartPos); V17!~ output.writeLong(fileSplitterFetch.nEndPos); Eu[/* t+l } T@ zV output.close(); 8M7Bw[Q1 } $AdBX}{ catch(IOException e){e.printStackTrace ();} =A_fL{ SM catch(Exception e){e.printStackTrace ();} +EH"A } &[5pR60 O&@CT] )8 ,3Aiz|v- //读取保存的下载信息(文件指针位置) scy_ private void read_nPos() CWSc #E { UYhxgPGsj try{ 1P G"IaOb DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); SL`nt int nCount = input.readInt(); Lv<vMIr nStartPos = new long[nCount]; ,#j'~-5 nEndPos = new long[nCount]; ^MvBW6#1 for(int i=0;i<nStartPos.length;i++) !d1a9los { _W>xFBy
nStartPos = input.readLong(); HnKXO nEndPos = input.readLong(); QVkrhwp } e. R9: input.close(); ggy9euWV } CsN^u H catch(IOException e){e.printStackTrace ();} cT
nC catch(Exception e){e.printStackTrace ();} V}Ce3wgvA } FQ u c}A *eMMfxFl C40o_1g private void processErrorCode(int nErrorCode) c6VyF=2q { %m-U:H.Vp System.err.println("Error Code : " + nErrorCode); 8;x0U`}Ez( } T _fM\jdI +.QJZo_ _[/#t|I} //停止文件下载 !gJw?(8" public void siteStop() <4582x,G { m%s:4Z%= bStop = true; ~re~Ys for(int i=0;i<nStartPos.length;i++) f'TEua_` fileSplitterFetch.splitterStop(); v4F+^0? P7$/yBI U `7R-2
w<b? } b8glZb*$ } gKtgW&PYm //负责部分文件的抓取 =X7_!vSv **FileSplitterFetch.java $ByP 9=| */ a`>H69(bU package NetFox; }ldpudU KCnm_4 I8uFMP import java.io.*; kq@~QI?9 import java.net.*; /dHIm`. Z }
g%v<'K BO.Db`` public class FileSplitterFetch extends Thread { \} _,g -B?cF9 aP#/% String sURL; //File URL Q"H/RMo- long nStartPos; //File Snippet Start Position L2OR<3*|Av long nEndPos; //File Snippet End Position J M`[|"R% int nThreadID; //Thread's ID Rx?ze( boolean bDownOver = false; //Downing is over I
moxg+u
boolean bStop = false; //Stop identical my#\(E+ FileAccessI fileAccessI = null; //File Access interface R[@}Lg7+v X!m
lC51 ilAhw4A public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException d0;?GQYn: { V)P8w#, this.sURL = sURL; =nqHVRA this.nStartPos = nStart; 2+ywl}9 this.nEndPos = nEnd; ?hViOh$. nThreadID = id; lSc=c-iOv fileAccessI = new FileAccessI(sName,nStartPos);//定位 :aH5=@[!y } gFsqCx<q tHK>w%|\R KD?b|y@ public void run() bP> Kx-%q { tS-gaT`T while(nStartPos < nEndPos && !bStop) 73Hm:"Eqd { Fu5c_"! ,e$6%R kpxGC,I^*. try{ '.k'*=cq0 URL url = new URL(sURL); ^b.#4i(v HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 6[SIDOp*^ httpConnection.setRequestProperty("User-Agent","NetFox"); b`@J"E} String sProperty = "bytes="+nStartPos+"-"; 7VL|\^Y `q httpConnection.setRequestProperty("RANGE",sProperty); na"!"C
s3 Utility.log(sProperty); T"<)B^8f 7Gy:T47T\@ 'u~0rMe4}) InputStream input = httpConnection.getInputStream(); @0d"^ //logResponseHead(httpConnection); MzDosr3: 5{bc&?" O8SE)R~ byte[] b = new byte[1024]; _
j`tR: int nRead; SZ}=~yoD( while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) k81%$E { 5DVYHN9c| nStartPos += fileAccessI.write(b,0,nRead); b` va\'&3 //if(nThreadID == 1) ~]q>}/&YLo // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); e['<.Yf+ } }1W@ [c;#>UQMf is~2{: Utility.log("Thread " + nThreadID + " is over!"); w
?*eBLJ(G bDownOver = true; YV!hlYOBi //nPos = fileAccessI.write (b,0,nRead); 2;0eW&e } N$x&k$w R catch(Exception e){e.printStackTrace ();} kw
E2V+2 } Ih>s2nL } )Yv=:+f |0Xf": AI`k
}sA~ //打印回应的头信息 &{UqGD#1& public void logResponseHead(HttpURLConnection con) r$8'1s37` { P=_fYA3 for(int i=1;;i++) *UJ4\ { }>d String header=con.getHeaderFieldKey(i); ]!&$&t8. if(header!=null) Y~e)3e //responseHeaders.put(header,httpConnection.getHeaderField(header)); <f M}Kk Utility.log(header+" : "+con.getHeaderField(header)); Fm,` ]CO else *mbzK*
break; 8QZI(Xe9r } }YVF
fi~ } S0QLM) E2d'P 8'%m! public void splitterStop() G!;PV^6x { S_/S2(V" bStop = true; Cs7ol-\) } X-(4/T+v JO+tY[q _OyQ:>M6P } 0Q`v#$?": (:HT|gKoE +{RTz)e?* /* 23WrJM!2N **FileAccess.java &JcatI *//文件访问(定位,写) -5 D<zP/ package NetFox; %1.F;-GdsW import java.io.*; YO$D- {(!JYz~P !*Eu(abD public class FileAccessI implements Serializable{ .
ump?
M ?5J# //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 5l
3PAG
RandomAccessFile oSavedFile; 5a$EXV long nPos; [`t ;or C5 Q!_x( #[bL9R5NC public FileAccessI() throws IOException }#7rg_O]> { yV )fJ_ this("",0); 0hV#]`9`gN } S`U8\KTi #Uu,yHMv:; W>C?a=r~ public FileAccessI(String sName,long nPos) throws IOException f|FS%]fCxk { t4[q:[1 oSavedFile = new RandomAccessFile(sName,"rw"); HyVV,q^E this.nPos = nPos; ws+ '*7 oSavedFile.seek(nPos); ^`'\eEa } ;Pt8\X &hI!mo IBo public synchronized int write(byte[] b,int nStart,int nLen) )q-NE) { Syy{ ^Ae} int n = -1; rZJJ\ , | try{ e,/]]E/o oSavedFile.write(b,nStart,nLen); t]@>kAA>2L n = nLen; j<*7p:L7_> } _&BK4?H@b catch(IOException e) =g9n =spAn { WSu6chz) e.printStackTrace (); kpIn_Ea } c
'wRGMP jez0 A H.ksI;, return n; uBx\xeI } $jg[6`L$ #Az#_0= L)J1yw } f7~dn#<@ B_Q{B|eEt& )|xu5.F /* Q_0+N3 **SiteInfoBean.java FL^ _)` */ -&>V.hi7 package NetFox; tfGs|x j'z#V_S W_`]7RO8 public class SiteInfoBean { /)sP, 2/ .EL3}6"A .iRKuBM/ private String sSiteURL; //Site's URL +ig%_QED[\ private String sFilePath; //Saved File's Path Lc{arhN private String sFileName; //Saved File's Name @"MYq#2c$ private int nSplitter; //Count of Splited Downloading File S>~f. wWb>V&3 a+cMXMf public SiteInfoBean() .cHgYHa {//nSplitter的缺省值为5 k
i<X ^^ //default value of nSplitter is 5 S@HC$ this("","","",5); uI7n{4W*x } w~b:9_reY $:F+Nf
8 OX]$Xdb2: public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 5p[}<I{ { QPDh!A3T sSiteURL= sURL; FpRYffT 9u sFilePath = sPath; n?EgC8b9 sFileName = sName; ~~OFymQ%?q this.nSplitter = nSpiltter; **hQb$ uGMzU&+ +M0pmK! } c a_mift "CJ~BJI% kWXLncE public String getSSiteURL() Kd5'2"DI { wc;n=
% return sSiteURL; qg
oB}n% } z3+@[I$ 7EE{*}?0E fZo#:"{/K public void setSSiteURL(String value) T?pS2I~ { 8Agg%*Qs} sSiteURL = value; smf"F\Ws } (?r,pAc: SV>tw`2 =9jK\ T^ public String getSFilePath() 4`5yrCd { )R JEOl1 return sFilePath; q*&R&K;q } ~(^P( 2IJK0w@ H{*Dc_ public void setSFilePath(String value) :25LQf^nz { 7Bp7d/R- sFilePath = value; y!#-[K: } rL{R=0 N y'\Q"Y] .T'@P7Hdx public String getSFileName() ]c/E7|0Q { T$%|=gq return sFileName; p\w<~pN[ } 4nsJZo#S/ H$h#n~W~ j<p.#jkT public void setSFileName(String value) I%3[aBz4 { U N9hZ>9 sFileName = value; 7)lEZJK&T } m-Eh0Zl>Z dz_S6o ] Jl/w P public int getNSplitter() WoEK #,I; { nq M7Is return nSplitter; p~$cwbQ! } O(T5 $H)^o! 4@PA+(kvS public void setNSplitter(int nCount) Xqf,_I=V { |THpkfW nSplitter = nCount; :o'x?] } 3Z
b]@n } dvB=Zk]m /|0-O'' BX >L7 n /* sey,J5? **Utility.java ]q]xU, */ n=.P46| package NetFox; G !q[NRu +hyOc|5 |bY@HpMp public class Utility { 1$>+rW{a |[*Bn3E: f>N DtG.6 public Utility() <`}P { Pxlc RF %O"8|ZG9{ IzP,)!EE } :7v'[b
BQ-x#[%s //线程睡眠 &`r/+B_W public static void sleep(int nSecond) uz8LF47@:- { n#(pT3&
try{ V(7,N( Thread.sleep(nSecond); z#*.9/y\^R } .xRdKt!p catch(Exception e) y\?ey'o { f"ezmZI e.printStackTrace (); n|i:4D } Rf:.'/<^ } U$OZkHA[ `b?uQ\#-M //日志 2Rk}ovtD[ public static void log(String sMsg) .GrOdDK$ns { `/8@Fj System.err.println(sMsg); u^Q`xd1 } '75T2Ud i>m%hbAk %*
"+kwZ public static void log(int sMsg) idI w7hi4 { a1Fx|#!
mq System.err.println(sMsg); &hOz(825r } -%asHDQ{ } p*
>z:= }3(!kW V1aP_G-: /* hOj{y2sc **TestMethod.java @62T:Vl */ '}.Yf_ package NetFox; /R#zu_i ">H*InF {9x_E { public class TestMethod { <Ky-3:pxeM At Wv9 @*6fEG{,q public TestMethod() \x<8 { ///xx/weblogic60b2_win.exe g) X3:=[' try{ /fI}QY1 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); S=UuEmU5N //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); cAWn*% SiteFileFetch fileFetch = new SiteFileFetch(bean); Uj!3MF fileFetch.start(); o@:"3s } dOhSqx56 catch(Exception e){e.printStackTrace ();} :#rP$LSYC -&Rv=q> '/d51 } yJA~4 SDnl^a 2b"*~O; public static void main(String[] args) vm [lMx { `^M]|7 new TestMethod(); IskL$Y ^
} \]X.f&u } l]*RiK2AC 点击下载更多相关资料
|