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/* L#
1vf **SiteFileFetch.java zs:7! */ x=#5\t9 package NetFox; .8!0b iS import java.io.*; FxX3Pq8h import java.net.*; `VE&Obp[ P$ef,ZW" Hu7zmh5FF public class SiteFileFetch extends Thread { [\
YP8^.. rM=A" +|<b0Xd SiteInfoBean siteInfoBean = null; //文件信息Bean 0Ida]H long[] nStartPos; //开始位置 Hc%\9{zH long[] nEndPos; //结束位置 =M#?* e FileSplitterFetch[] fileSplitterFetch; //子线程对象 -b}S3<15@ long nFileLength; //文件长度 X4G55]D$> boolean bFirst = true; //是否第一次取文件 %Nl(Y@dD* boolean bStop = false; //停止标志 @e0skc File tmpFile; //文件下载的临时信息 [s{:}ZuKc DataOutputStream output; //输出到文件的输出流 f4T0Y["QA %pkq ?9 //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) I?g__u=n~ public SiteFileFetch(SiteInfoBean bean) throws IOException @qy*R'+ { :+Ax3 siteInfoBean = bean; _5w?v~6 5 //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); N:[;E3?O tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 5)5bt q)[ if(tmpFile.exists ()) M9g\/]Io; { "4hpU]4j bFirst = false; cEjdImAzU read_nPos(); $#FlnM<= } 97wy;'J[u else WbWW=(N'd { MxEAs}MDv nStartPos = new long[bean.getNSplitter()]; %=8(B.I! nEndPos = new long[bean.getNSplitter()]; 2\\3< } @h$0S+?: [(F<|f:n dd7nO
:] F'$S!K58 } $jh>zf )9*3^v EJ ~kZ3 public void run() Q9xx/tUW { )$h9Y //获得文件长度 XJ~l5}y ] //分割文件 nSQ}yqM) //实例FileSplitterFetch sLi//P?:t //启动FileSplitterFetch线程 &N_c-@2O //等待子线程返回 7QiCZcb\ try{ xyjVdD\ if(bFirst) nCMa$+ { z12But\< nFileLength = getFileSize(); X5|/s::u if(nFileLength == -1) 5vF}F^ { qZsddll System.err.println("File Length is not known!"); ~)a;59<$ } 0s9z @>2 else if(nFileLength == -2) k)K-mD``U { c_bVF 'Bz System.err.println("File is not access!"); q[OTaSQ~u^ } .7gE^ else %"[dGB$S { X/8iJ-KB for(int i=0;i<nStartPos.length;i++) Te@6N\g
{ SslY]d] nStartPos = (long)(i*(nFileLength/nStartPos.length)); */^2RZg|W } 6 _5d for(int i=0;i<nEndPos.length-1;i++) t?nc0;Q9,@ { rYFau1 nEndPos = nStartPos[i+1]; <h_P+ nz } TBKd|D'H nEndPos[nEndPos.length-1] = nFileLength; )|x%o(n } _| } -+=:+LhSMb ,;iBeqr5 @fH&(@ //启动子线程 ](=wlq) fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 4JZHjf0M6 for(int i=0;i<nStartPos.length;i++) s>VEuLY* { Sj{ia2AE_ fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %|(?!w7 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), C9F+e nStartPos,nEndPos,i); s9rtXBJP Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #>:(#^Uu fileSplitterFetch.start(); CSL{Q } z34>,0 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^~6] 0$yJ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); !b]2q%XM // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", "?SOBA!vy nEndPos = " + nFileLength); jfY{z=*]u // fileSplitterFetch[nPos.length-1].start(); q|u8CX \_*MJ)h)X -[pCP_`)u //等待子线程结束 lgonR //int count = 0; RzzFhU#r //是否结束while循环 W8,t l>( boolean breakWhile = false; SE^b0ZV*x },fo+vRM u.kYp while(!bStop) 0/:=wn^pg { &oeN#5Es8C write_nPos(); II-$WJy Utility.sleep(500); B8UZ9I$n breakWhile = true; inB PT~y 0Ox|^V ]`@]<6 for(int i=0;i<nStartPos.length;i++) *F
szGn< { .'S^&M/$ if(!fileSplitterFetch.bDownOver) Aa`MK$29F { ^'7C0ps+A breakWhile = false; \+{t4Im break; +qdIj] v } N2tkCkl^x9 } dm2CA0 if(breakWhile) e$Bf[F#;- break; :6W^ S/pf 7V=MRf&xQ EDHg'q //count++; )8$:DW; //if(count>4) {x[;5TM // siteStop(); X7H'Uk9: } ;V~rWzKM( kG$E
tE# b4v(k(< System.err.println("文件下载结束!"); jJUGZVM6) } B [+(r catch(Exception e){e.printStackTrace ();} 1 Itil~ } v\%B rv}mD 3ximNQ}S //获得文件长度 9k\)tWe public long getFileSize() ut$,?k!M { Hwp{< int nFileLength = -1; (LRM~5KVg try{ 7$ =Y\P URL url = new URL(siteInfoBean.getSSiteURL()); ~{4n}* HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Y$`eg|$ httpConnection.setRequestProperty("User-Agent","NetFox"); qX5yN| A4 *#1y6^ fVDDYo2\ int responseCode=httpConnection.getResponseCode(); 2$
|]Vj*Zs if(responseCode>=400) 3I"NI.>* { N-2([v processErrorCode(responseCode); FjZc#\^9 return -2; //-2 represent access is error V06CCy8n } `ke3+%uj o D0/DI dn ZzA String sHeader; J3e:Y! /2;dH]o0 ]cm6 |`pz for(int i=1;;i++) 3`A>j" { |(V?,^b^ro //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); &~~aAg //Utility.log(in.readLine()); +Qh[sGDdY sHeader=httpConnection.getHeaderFieldKey(i); F$Im9T6 if(sHeader!=null) D XV@DQ { 7}4'dW. if(sHeader.equals("Content-Length")) <nWKR, { , 3X: ) nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); N]14 break; ZfPd0 p } -AjH}A[! } +T0op4 else O' +"d%2' break; sM9FE{,mx } qoj^_s6 } bMN@H\Ek catch(IOException e){e.printStackTrace ();} D|d4:;7 catch(Exception e){e.printStackTrace ();} 7\A4vUI3 *Jvxs
R'a1 .u1X+P7 Utility.log(nFileLength); ]~-*hOcQ4 _1^8xFe2 mZ~ qG5@/F return nFileLength; X^}A*4j } Rj[hhSx 2 &<,SV^wag ]^=|Zd- //保存下载信息(文件指针位置) qib7Z]j private void write_nPos() KRYcCn { fb\DiKsW try{ ugYw< output = new DataOutputStream(new FileOutputStream(tmpFile)); ep+ output.writeInt(nStartPos.length); (1 CJw: for(int i=0;i<nStartPos.length;i++) ?Z q_9T7 { 4%
HGMr // output.writeLong(nPos); AL$W +') output.writeLong(fileSplitterFetch.nStartPos); ^=EjadVQ output.writeLong(fileSplitterFetch.nEndPos); 'p%=<0vrr } ZJ;LD* output.close(); *'D=1{WZ! } gH %y catch(IOException e){e.printStackTrace ();} w
|_GV}#_ catch(Exception e){e.printStackTrace ();} o+nG3kRD } xXX/]x> ><;Q@u5~ kt^yj"C> //读取保存的下载信息(文件指针位置) D+Cm<ZT~ private void read_nPos() 5h0>!0 { R A:jzht try{ !(Krf DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (;aB!(_ int nCount = input.readInt(); KP3n^
$~ nStartPos = new long[nCount]; x97L6! nEndPos = new long[nCount]; W9Nmx3ve for(int i=0;i<nStartPos.length;i++) JqEW=5 { 9)+@0fG) nStartPos = input.readLong(); -G9|n#zCU nEndPos = input.readLong(); G.g|jP'n } 6v to++ input.close(); y&"!m} } #EbGL])F} catch(IOException e){e.printStackTrace ();} s5l3V2k catch(Exception e){e.printStackTrace ();} c-kA^z{f } GnFs63 wW:7y>z) Wta]BX private void processErrorCode(int nErrorCode) ~-TOsRvxR { 5IW8=$k~.) System.err.println("Error Code : " + nErrorCode); *8bK')W } .NJ|p=fy 9Bz0MUbrLl @6 /yu>% //停止文件下载 xCWz\-; public void siteStop() %aU4,j^],o { xjo;kx\y^ bStop = true; )6{<
i5nJ\ for(int i=0;i<nStartPos.length;i++) Nt]qVwUm'Y fileSplitterFetch.splitterStop(); #;[Bl=3( q-nER< G?`-]FMO } ["y6b*;x } 9#7J:PfZ< //负责部分文件的抓取 nnwJYEi **FileSplitterFetch.java W|MWXs5'1* */ [4*1}}gW%5 package NetFox; J8?2R^;{ n9%]-s\Hn >"v9iT import java.io.*; pMR,#[U< import java.net.*; 1<.5ub*i4 {uU 2)5i2- $ rUSKm# public class FileSplitterFetch extends Thread { ACg;CTBb prtK:eGe2 tdep|sD String sURL; //File URL A%u_&a}
long nStartPos; //File Snippet Start Position m:uPEpcU long nEndPos; //File Snippet End Position +dk fcG int nThreadID; //Thread's ID [:h5} boolean bDownOver = false; //Downing is over ;HNq>/{ boolean bStop = false; //Stop identical c 6"Ib) FileAccessI fileAccessI = null; //File Access interface ;au*V5a% ,zhJY ?sk VfSj E.| public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException e_.Gw"/Yl {
6)qp*P$L this.sURL = sURL; rh!;|xB|+ this.nStartPos = nStart; #(KDjnP[ this.nEndPos = nEnd; HeLG?6 nThreadID = id; tIc 7:th fileAccessI = new FileAccessI(sName,nStartPos);//定位 PT'MNH } >oGiIYq _V2xA88 X|}2_B public void run() j.m(ltGh { _Mk7U@j+9 while(nStartPos < nEndPos && !bStop) +D&Pp0xe { o(!@7Lqq a~PK
pw2% AiP!hw/V$ try{ ;W]\rft[ URL url = new URL(sURL); VwyVEZt HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *$,:m httpConnection.setRequestProperty("User-Agent","NetFox"); m&*JMA;^ String sProperty = "bytes="+nStartPos+"-"; d%_OT0Ei httpConnection.setRequestProperty("RANGE",sProperty); I|9
SiZ0 Utility.log(sProperty); ~g6 3qs g^7MMlY% ",yc0 2< InputStream input = httpConnection.getInputStream(); `JB?c //logResponseHead(httpConnection); a0=WfeT T 2F6)e ,WDX( byte[] b = new byte[1024]; %eg+F int nRead; H,QTYXi " while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) d\]Yk]r { ;Hmp f0$ nStartPos += fileAccessI.write(b,0,nRead); wSEWwU[ //if(nThreadID == 1) 0hY{<^"Y // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `d\r;cE%lm } W$0^(FH[ W3H+.E HCWNo Utility.log("Thread " + nThreadID + " is over!"); +s++7<C bDownOver = true; S >yLqPp //nPos = fileAccessI.write (b,0,nRead); [ sF(#Y:I } G2Vv i[c catch(Exception e){e.printStackTrace ();} M|,mr~rRG } 58 bCUh#uw } 3djC;*,9, xtfBfA i,IB!x //打印回应的头信息 x/!5K|c public void logResponseHead(HttpURLConnection con) gNYqAUG5 { UC
HZ2& for(int i=1;;i++) 3]RyTQ { +Q$h ]^>~ String header=con.getHeaderFieldKey(i); tM4Cx if(header!=null) TX=yPq //responseHeaders.put(header,httpConnection.getHeaderField(header)); T4)fOu3] Utility.log(header+" : "+con.getHeaderField(header)); nUS| sh else ) ZfdQ3 break; y5r4+2B } T 20&F } Fqy\CMC t.p~\6Yi 5Xn.CBd] public void splitterStop() ]\ !5}L { R:X0'zeRr bStop = true; `h:34RC; } i|`dWOVb ]:>,A@7 i4JqT \q } Gg Jf7ie4 +M'
H0-[ _{<seA /* /!h;c$ **FileAccess.java VTy9_~q *//文件访问(定位,写) Xpe)PXb package NetFox; )R`x R,H import java.io.*; [AMAa]^ I$q]. B s\!>"J bAQ public class FileAccessI implements Serializable{ 3?2 FP|G8 oND@:>QBF //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 `F<jLU^3 RandomAccessFile oSavedFile; G uz"wY long nPos; KlRr8G!Z v~QHMg h8Yx#4
public FileAccessI() throws IOException (aOv#Vor]% { 8YC_3Yi% this("",0); 4=<tWa|@9 } 1`ayc|9BR q$I:`& hn#1%p6t public FileAccessI(String sName,long nPos) throws IOException !;?+>R)h { %_ !bRo oSavedFile = new RandomAccessFile(sName,"rw"); =UUU$hq2 this.nPos = nPos; MxT-1&XL oSavedFile.seek(nPos); |$?bc3 } _ODbY;M ,eTU/Q>{,& C74a(Bk}H public synchronized int write(byte[] b,int nStart,int nLen) /c
uLc^(X { lOtDqb& int n = -1; 0a80 LAK try{ th;{V%:LW oSavedFile.write(b,nStart,nLen); *98$dQR$ n = nLen; 6I@h9uIsze } n{6G"t:^l catch(IOException e) |*}4 m'c { 15o9 . e.printStackTrace (); H\TI[JPAl } ")d`dj\o Djg,Lvhm &Z`#cMR{H return n; hCC<?5q } #O+),,WS )c `7( nY 7(pF[LCF } I:mr}mv=i C.FI~Z ."9];)2rx /* B)0i:"q **SiteInfoBean.java {{QELfH2 */ #{?qNl8F*J package NetFox; zAiXo__x rx] @A ax (c# public class SiteInfoBean { V#iPj'*
V,%=AR5 S:OO0<W private String sSiteURL; //Site's URL
5~>z h private String sFilePath; //Saved File's Path ZzSz%z_sE private String sFileName; //Saved File's Name $m/)FnU/ private int nSplitter; //Count of Splited Downloading File ZjF 4v oz,e/v8~ C#Na&m public SiteInfoBean() zx)z/1 {//nSplitter的缺省值为5 +mn,F}; //default value of nSplitter is 5 Le\?+h42> this("","","",5); PpAu!2lt9 } "vOwd.(?N LU={")TdQ -4
SY=NC_ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) @0/+_2MH- { PK `D8)=u sSiteURL= sURL; t+!$[K0/ sFilePath = sPath; hpD!2 K3> sFileName = sName; ^zQ/mo,Z this.nSplitter = nSpiltter; `Tv[DIVW "$YJX1u3 [D\k^h } ]GW]dM Zcx`SC-0 e]zBf;9J public String getSSiteURL() C$XU%5qi { tM'P m return sSiteURL; =Jyu4j *} } iMDM1}b ~kEI4}O uFinv2Z' public void setSSiteURL(String value) ~v|>xqWV { `u&Rsz&^ sSiteURL = value; @U& QI* } #Up86(Z Al}B34.uh |xdsl, public String getSFilePath() -C(crn { v0H@Eg_ return sFilePath; SC)g^E# } 6[ j.@[t Ju1D
=b P*3BB>FO public void setSFilePath(String value) j~[z2tV { |}Nn!Sj>#; sFilePath = value; #."-#"0 } CTq&-l:f :&V h? ?kbiMs1;u public String getSFileName() c7x~{V8 { 4R1<nZ"e~ return sFileName; vunHNHltW0 } Lr~=^{ (ROY?5
@c Y[}>CYO public void setSFileName(String value) #W4dkCd(pF { pZqq]mHK sFileName = value; U`, 6 * MS } A>o*t=5 5K>3My# ~j}cyHg public int getNSplitter() EyJJ0 { (X\@t-8 return nSplitter; JfLqtXF[&" } l5!|I:/*; eD?tLj Q ayPo]O public void setNSplitter(int nCount) OEA&~4&{7 { 'vbsv T nSplitter = nCount; }ppN k:B } X86O lP)eX } Jh,]r?Bd R3gdLa. .WA-&b_ /* CQF:Rnb **Utility.java 5Ha9lM2gh */ 5q3JI package NetFox; R O+GK`J Lo{
E:5q G|!Tj X7s public class Utility { |"ls\ 7 Yvw(tj5_5 ayR-\mZ public Utility() &^ 1$^= { ,8U&?8l snE8 K}4 [=6]+V83M } y\4L{GlBM )~)J?l3{ //线程睡眠 *2pt%eav public static void sleep(int nSecond) Dp,L/1GQ8 { X(
\AB try{ o=1Uh,S3R Thread.sleep(nSecond); B+P(M!m3 } 4gI/!,J(b catch(Exception e) 6m*QX+ { y-'$(x e.printStackTrace (); ]7W&JKmA& } :~&~y-14 } FH?U(- \)#kquH/l //日志 at#ja_ hd public static void log(String sMsg) ?~BC#B\>o { Gw/Pk4R System.err.println(sMsg); S 6@u@C } 4KhV|#-;k i1ixi\P{0 )B"jF>9)[ public static void log(int sMsg) ]sf7{lVT { :%tU'w System.err.println(sMsg); ?pW`cFLDHF } GZN ^k+w } 6M @[B|Q( n4;.W#\ }aa'\8 /* ,>bh$| **TestMethod.java SA&Rep^ */ kJ'[K!r package NetFox; :;t:H]
f 0gW"i&7c q6McG HT public class TestMethod { dyz2.ZY~2 EizKoHI-z (9''MlGd% public TestMethod() Q|S.R1L^ { ///xx/weblogic60b2_win.exe \FQRNj?'_ try{ PS)4 I&;U SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); pnl{&<$C%C //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); jwc)Lj} SiteFileFetch fileFetch = new SiteFileFetch(bean); E:UW#S%A
f fileFetch.start(); fiK6@, } }"nItcp.1 catch(Exception e){e.printStackTrace ();} YqhAZp< 'nzg6^I7g $p1(He0 2 } $Xv* ,Bq nsu@h Xb|:vr\v public static void main(String[] args) B]nEkO'a: { Y071Y: new TestMethod(); ~^NtO } u1J0$ } py$Q 点击下载更多相关资料
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