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/* 4pq@o **SiteFileFetch.java 1@6dHFA`o */ )Ge.1B$8h package NetFox; "~0m_brf import java.io.*; cH?j@-pY import java.net.*; Q"n*`#Yt' + pZ, RW.D q{HfT
d public class SiteFileFetch extends Thread { $NC1>83 X}Bo[YoY$ &u( eu'Q3 SiteInfoBean siteInfoBean = null; //文件信息Bean
jhjb)r. long[] nStartPos; //开始位置 ;|6kFBGC"+ long[] nEndPos; //结束位置 m!3b.2/h FileSplitterFetch[] fileSplitterFetch; //子线程对象 BoE;,s>]NW long nFileLength; //文件长度 y8'WR-; boolean bFirst = true; //是否第一次取文件 i[/g&fx boolean bStop = false; //停止标志 3zo]*6p0 File tmpFile; //文件下载的临时信息 Gkv<)}G DataOutputStream output; //输出到文件的输出流 K9B_o, k3h,c; //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) l5F>v!NA
public SiteFileFetch(SiteInfoBean bean) throws IOException D]S@U>]M! { _]a8lr+_- siteInfoBean = bean; ;,![Lar5L //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); "Lk-R5iFd tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); @.;] $N&J if(tmpFile.exists ()) ,)e&u1' { &Ed7|k]H bFirst = false; _fx0-S*$ read_nPos(); zZ&L# } D1o<:jOj else CB{%~ { ="<5+G nStartPos = new long[bean.getNSplitter()]; 6!bp;iLKy nEndPos = new long[bean.getNSplitter()]; ifTMoC% } R]O!F)_/' kwU~kcM rxH*h`Xx@ eR PmN } p%toD{$ 8d|omqe~P *{8<4CVv public void run() T+ey>[ { ,ef"S
r //获得文件长度 }'mVD^<+ //分割文件 WJbdsPs //实例FileSplitterFetch ?K%&N99c! //启动FileSplitterFetch线程 /fC@T //等待子线程返回 =+9.X8SP try{ KKP}fN if(bFirst) f_a.BTtNO { Pj9n`LwM nFileLength = getFileSize(); 8.FBgZh* if(nFileLength == -1) Pw
i6Ly` { q"xIW0Pc System.err.println("File Length is not known!"); ngJi;9X8*t } >=Hm2daN else if(nFileLength == -2) 0`.3`Mk { F4'g}yOLd System.err.println("File is not access!"); qI;"yG-x- } X_GR{z%
else "9,z"k { t)P5bQ+$u9 for(int i=0;i<nStartPos.length;i++) /z:pid,_0 { g
/D@/AU1u nStartPos = (long)(i*(nFileLength/nStartPos.length)); VP[-BK[ } XDs ) for(int i=0;i<nEndPos.length-1;i++) 1T:M?N8J { \?uaHX`1 nEndPos = nStartPos[i+1]; I;H6E } d#P3
< nEndPos[nEndPos.length-1] = nFileLength; CBw/a0Uck } EV{kd.=f } '{=dEEi 5N
"fD{v{ XOgl>1O //启动子线程 V^fSrW] fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 7KIOI,qb6 for(int i=0;i<nStartPos.length;i++) L".Qf|b* { td!WgL,m fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), V
;Kzh$^rk siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), ?mKj+Bk2 nStartPos,nEndPos,i); *#+e_)d Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 3]xe7F'` fileSplitterFetch.start(); 0I_A$Z,x } 'PPVM@)fU // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), tdZ,sHY6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); *lHI\5 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", @i'24Q[6 nEndPos = " + nFileLength); #;FHyKx // fileSplitterFetch[nPos.length-1].start(); F7$x5h@ cpz'upVOZ uim4,Zm{ //等待子线程结束 }YUUCq& //int count = 0; YT7,=k _ //是否结束while循环 E^uau=F boolean breakWhile = false; '}\{4Qst sute%6yM O%? TxzX; while(!bStop) .Rt_j
{ !u~h.DrvZ write_nPos(); G8xM]'y Utility.sleep(500); sVP[7&vr~ breakWhile = true; lF-;h{
YT!QY@qw SN2X{Q|* for(int i=0;i<nStartPos.length;i++) Ar&]/X,WG { mD }&X7 if(!fileSplitterFetch.bDownOver) iC-WQkQY { N<c98 breakWhile = false;
E~oQ%X~ break; #N%ATV } ]D|sQPi]F } J qWMO!1 if(breakWhile) 0v6(A4Y break; 9_Tk8L# 1Xy{&Ut\ qh}M!p2 //count++; P(?i>F7s //if(count>4) g7*c wu // siteStop(); Z}bUvr XP } ECHl9;
+ H':dLR .5=Qfvi* System.err.println("文件下载结束!"); (?MRbX]@ } &1O[N*$e catch(Exception e){e.printStackTrace ();} Abr:UEG } GE4d=;5 -$Bom qc^u% //获得文件长度 zrfE'C8O public long getFileSize() ' k~'aZ { 0{|ib ! int nFileLength = -1; ?^iX% try{ Jej P91 URL url = new URL(siteInfoBean.getSSiteURL()); 5`m RrEA HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); z_fR?~$N2 httpConnection.setRequestProperty("User-Agent","NetFox"); 2w`k h= &W/C2cpmR =XWew* int responseCode=httpConnection.getResponseCode(); 4u5^I;4pL if(responseCode>=400) :ie7HF { C D#:* processErrorCode(responseCode); Y9F78=Q return -2; //-2 represent access is error SI_{%~k*B } M$O}roOa c-nBB Hbogi1!al| String sHeader; 0gNwC~IA8 I}oxwc [\N,ow,n for(int i=1;;i++) b
62 o { rAqg<fR* //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); (1e;7sNG@ //Utility.log(in.readLine()); + >o/Ob sHeader=httpConnection.getHeaderFieldKey(i); F5Ce:+h if(sHeader!=null) =\s(v-8 { *yAC8\v if(sHeader.equals("Content-Length")) rg
U$&O { /'U/rjb_h{ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); /7Z0|Zw] break; #5HJW[9 } 5A]IiX4Z } Zf;1U98oC else 75vd ]45as break; hg7`jE&2 } d!)
&@k } ,sPsL9]$ catch(IOException e){e.printStackTrace ();} rtcY(5Q catch(Exception e){e.printStackTrace ();} 9ls<Y FY"!%)TV = !D<1< Utility.log(nFileLength); H?8uy_Sc \~ O6S`, 2d+IROA return nFileLength; )W9$_<Z } @ -pi CFD& -tED& p1t9s
N, //保存下载信息(文件指针位置) "El$Sat` private void write_nPos() 1fRYXqx { ,ZjbbBZ try{ rlu{C4l output = new DataOutputStream(new FileOutputStream(tmpFile)); W&`_cGoP output.writeInt(nStartPos.length); k^I4z^O=-; for(int i=0;i<nStartPos.length;i++) D6Ov]E:fa { mj :8ZZ // output.writeLong(nPos); b\~rL,7( output.writeLong(fileSplitterFetch.nStartPos); qA:CV(Z output.writeLong(fileSplitterFetch.nEndPos); . (*V|&n } H~RWM'_ output.close(); 2&fIF}vk>m } vW6Pf^yJ catch(IOException e){e.printStackTrace ();} Vf6lu)Zc1 catch(Exception e){e.printStackTrace ();} mJb>)bOl } Er}
xB~<t '3=[xVnv Uxx=$ //读取保存的下载信息(文件指针位置) OI B~W private void read_nPos() u{=(]n { 0hcrQ^BB!b try{ hBDPz1< DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); /yn1MW[. int nCount = input.readInt(); 0+IJ, ;Wx nStartPos = new long[nCount]; 1vQf=t%lw nEndPos = new long[nCount]; Mvoi
for(int i=0;i<nStartPos.length;i++) sAS\-c'6 { \>nPg5OT nStartPos = input.readLong(); SiHZco
I nEndPos = input.readLong(); k<ds7k1m } R^P~iAO input.close(); [0N==Ym1 } dix\hqZ catch(IOException e){e.printStackTrace ();} 3EB8ls2 catch(Exception e){e.printStackTrace ();} 1R9hA7y&,/ } LoUi Yf C)`ZI8 |mV*HdqU private void processErrorCode(int nErrorCode) OtJYr1:y_ { pgT{#[=> System.err.println("Error Code : " + nErrorCode); &!JX
} {6'5K
U*RH =3lUr<Ze ?,NZ/n //停止文件下载 6d"dJV.\ public void siteStop() KZeRbq2jJ { '#[U7(lIQ bStop = true; A:[La#h|p for(int i=0;i<nStartPos.length;i++) DIodQkF fileSplitterFetch.splitterStop(); iOm1U_S ga^O]yK 0iqa]Am } Lhu2;F\/ } ]OZZPo //负责部分文件的抓取 "?lirOD **FileSplitterFetch.java yi%A*q~MT */ #B:J7&@fn package NetFox; K^?yD VcIsAK".4[ :6PWU$z$7 import java.io.*; XLp tJ4~v import java.net.*;
f]q3E[?/ -cNh5~p= IJO`"da public class FileSplitterFetch extends Thread { "QA CQ- |332G64K ]"q[hF*PM String sURL; //File URL ULMG"."IH long nStartPos; //File Snippet Start Position Sj(uc# long nEndPos; //File Snippet End Position sIdo(`8$ int nThreadID; //Thread's ID l*("[?>I boolean bDownOver = false; //Downing is over N:[m,U9a boolean bStop = false; //Stop identical 3Gf^IV-
FileAccessI fileAccessI = null; //File Access interface A_T-]YQ zMt "ST. g"(
vl-Uw public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Y'S xehx { EnA) Rz this.sURL = sURL; C*ZgjFvB this.nStartPos = nStart; Xj"/6|X this.nEndPos = nEnd; fG;)wQJ nThreadID = id; ;r>?V2,tm fileAccessI = new FileAccessI(sName,nStartPos);//定位 ui`xgR\6Rh } =1)yI>2e%} qfvd(w 8qp!S1Qnv public void run() au}rS0)+ { oP5G*AFUq while(nStartPos < nEndPos && !bStop) >>Hsx2M { #*,Jqr2f \bqNjlu Pk[f_%0 try{ C\dQ6(3}\ URL url = new URL(sURL); jJ?MT#v HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); TbU\qcm]] httpConnection.setRequestProperty("User-Agent","NetFox"); `da6}Vqj: String sProperty = "bytes="+nStartPos+"-"; p9XHYf72 httpConnection.setRequestProperty("RANGE",sProperty); (\.[pj%-O Utility.log(sProperty); [yL%+I <%<}];bmFL I(P|`" InputStream input = httpConnection.getInputStream(); 2GXAq~h@ //logResponseHead(httpConnection); m7z/@b[ IK(G%dDw uCF+Mp byte[] b = new byte[1024]; PV(bJ7&R int nRead; AUcq\Ys while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) |OF<=GGO+ { ;#78`x2 nStartPos += fileAccessI.write(b,0,nRead); < Upn~tH //if(nThreadID == 1) t#MU2b // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); c)#b*k,lw< } B~- VGT2o ch1EF/" ./jkY7
k Utility.log("Thread " + nThreadID + " is over!"); +cheLc bDownOver = true; qD7(+a //nPos = fileAccessI.write (b,0,nRead); (' /S~ } djqSW9 catch(Exception e){e.printStackTrace ();} c%>t(ce`Tl } heZJ(mR } KCq qwGM Lg|j0-"N `x~k} //打印回应的头信息 xO9,,w47 public void logResponseHead(HttpURLConnection con) $%`OJf*k { )9##mUt'} for(int i=1;;i++) JxiLjvIq { !sEI|47{ String header=con.getHeaderFieldKey(i); fW!~*Q if(header!=null) .
Uv7{( //responseHeaders.put(header,httpConnection.getHeaderField(header)); ss T o?WL| Utility.log(header+" : "+con.getHeaderField(header)); EyI
9$@4 else Y<:%_]] break; ktU98Bk] } Sq/M
%z5' } ml.l( 6A iBwl(,)?m2 :m_0WT public void splitterStop() t<$9!" { ($7>\"+Tl bStop = true; PkF
B. } QB#f'X }h5pM`|1 .^I,C!O# } u]@``Zb| JMuUj_^}7 kWjCSC>jA /* Au#(guvm **FileAccess.java !-2nIY! *//文件访问(定位,写) |iLeOztuE package NetFox; ?qAX *j import java.io.*; =R:3J"ly0 eqD%Qdx D*Siy; public class FileAccessI implements Serializable{ DC]FY|ff ppR~e*rv- //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 L q'*B9 RandomAccessFile oSavedFile; $V]D7kDph* long nPos; W!4GL>9m}A ']u w,b yb*SD! public FileAccessI() throws IOException RSG4A>%!mI { U;i:k%Bzy this("",0); cm%QV? } @'?<92A W~.1f1) p
W:[Q\rSj public FileAccessI(String sName,long nPos) throws IOException {ogGi/8 { JiDX|Q<c oSavedFile = new RandomAccessFile(sName,"rw"); 6f?5/hq this.nPos = nPos; 2etcSU(y> oSavedFile.seek(nPos); Axk
p } )$P!7$C- "6Nma)8 g4=}]. public synchronized int write(byte[] b,int nStart,int nLen) |ZJ]`qmZ { j{7_p$JM int n = -1; *P$5k1 try{ P{)HXUVb oSavedFile.write(b,nStart,nLen); ;pU9ov4) n = nLen; +&O[}%W } O#H `/z catch(IOException e) pA!+;Y!ZB< { GTYGm e.printStackTrace (); \'GX^0yK } CmJI" xHJ+! d}>Nl$ return n; HOsq _)K } {3$ge 59$mfW
o> XsQ<yeun } X
z2IAiAs' gD _tBv UQPd@IVu6 /* [LL"86D **SiteInfoBean.java }qc[ysDK] */ )UI T'*ow package NetFox;
fhL dM A8e b{qv w/d9S(
public class SiteInfoBean { NX@TWBn% I =qd\ {h&*H[Z z private String sSiteURL; //Site's URL +m:U9K(\h private String sFilePath; //Saved File's Path 6 [a CjW private String sFileName; //Saved File's Name <Sm=,Sw private int nSplitter; //Count of Splited Downloading File fk*JoR.o ~b3xn T @K4} cP public SiteInfoBean() gO*cX& {//nSplitter的缺省值为5 +SrE //default value of nSplitter is 5 =H>rX
2k this("","","",5); 0Ny0#;P
} $SG^, !!&A H<}<f: 2i |wQU5w public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) KKGAk\X { #T#&qo# sSiteURL= sURL; P6i4Dr sFilePath = sPath; 6M"J3\
x sFileName = sName; asQ pVP this.nSplitter = nSpiltter; D<L]' ujmW {() E2X
K hW } 0Hff/~J "Z&qOQg%3 -CtA\<7I public String getSSiteURL() y\5V(Q\ { w]tv<U={ return sSiteURL; R!*UU'se } x"8(j8e "}7K>|a gWy2$) public void setSSiteURL(String value) FLEf( { $'L(}gNv5 sSiteURL = value; 3 c@Cb`w@ } S.t+HwVodO Vfg144FG' @,M !&l public String getSFilePath() _m3PAD4 { K+ ufcct return sFilePath; \ts:' } b'Mg 5SR29Z[ <G 2;nvRr public void setSFilePath(String value) ;o%r{:lng { l=
~]MSwY sFilePath = value; KSh<_`j } kn+`2-0 jBI VZ!X }k \a~<'X public String getSFileName() C<qJnB:B9 { -$dnUXFsj[ return sFileName; TeHL=\L-^ } @L{HT8utK3 6dC!&leNi d?b2jZ$r] public void setSFileName(String value) CWCE}WU>4 { bC?t4-W sFileName = value; z)43+8 ; } qO&:J\d f`/JY!uj{ _P,fJ`w public int getNSplitter() (zk'i13#6 { ?ohLcz return nSplitter; d/Zt}{ } A ;Z%-x &Vnet7LfU *=@Z\]"? public void setNSplitter(int nCount) WAqR70{KM { u"X8(\pOn nSplitter = nCount; jpm}EOq<% } |I)xK@7 } 9co
-W+ +;FF0_ 3~s0ux[ /* AGK+~EjL@ **Utility.java }-:
d*YtK */ &[R&@l Y package NetFox; ,dZ
9=] >=C)\Yfu) ou,W|<% public class Utility { @_N -> l 0e:K iUr -_>c P public Utility() 7dV^35 KP { '~3(s?B 8V=I[UF.1? RM%lhDFY } Br\/7F wT*`Od8w //线程睡眠 ,1^)JshZ~ public static void sleep(int nSecond) 4.H!rkMM { -lb}}z+/ try{ Og30&a!~F Thread.sleep(nSecond); 7F}I.,<W } GN=F-*2 catch(Exception e) K8284A8v { "=4=Q\0PT e.printStackTrace (); Y$oBsg\v } "TN}=^A\F } Gp32\^H|< b*P\a //日志 nU`vj`K
public static void log(String sMsg) a`/[\K6 { kIXLB!L2b^ System.err.println(sMsg); P3lNns3 } M&Ycw XV:Z G@,qO#5& c{FvMV2em public static void log(int sMsg) &,NHk9.aq { Zh3]bg5 System.err.println(sMsg); f)"O( c } W=F?+KgL } ~POe0!} (_<ruwV]` QbOmJQ /* \ZCc~muR **TestMethod.java v6oZD;;~ */ j}0*`[c package NetFox; |6_<4lmTxF j
q1qj9KZ E.6^~'/ public class TestMethod { #n~/~*:i92 $R7d*\(G 5%tIAbGW public TestMethod() 9dKrE_zK: { ///xx/weblogic60b2_win.exe {H"gp?Z- try{ 9W'#4 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); wond>m
3 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); @X1>Wv|[ SiteFileFetch fileFetch = new SiteFileFetch(bean); OaU$ [Z'8 fileFetch.start(); 1*>a } J5|Dduv
catch(Exception e){e.printStackTrace ();} XPWK"t01 F_V~UX1D rl4daV&,U } AQ+w%>G6 $lV0TCgba8 PPE:@!u< public static void main(String[] args) M=0I 3o}J { 3+n&Ya1 new TestMethod(); yKfRwO[j } A!iV iX &y } [@>Kd`!' 点击下载更多相关资料
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