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/* t/3qD7L **SiteFileFetch.java C!6D /S */ |=:hUp Jp package NetFox; r;wm`(e import java.io.*; Z:2%gU&W import java.net.*; n5tsaU; (W[]}k; :$P1ps3B public class SiteFileFetch extends Thread { d%E*P4Ua GR 1%(, Cyo:Da
A SiteInfoBean siteInfoBean = null; //文件信息Bean :C={Z}t/F long[] nStartPos; //开始位置 B9c
gVTLj long[] nEndPos; //结束位置 ~JS@$ # FileSplitterFetch[] fileSplitterFetch; //子线程对象 qc';< long nFileLength; //文件长度 HTm`_}G9 boolean bFirst = true; //是否第一次取文件 >8$Lqj^i boolean bStop = false; //停止标志 ::cI4D File tmpFile; //文件下载的临时信息 }` <DKO/ DataOutputStream output; //输出到文件的输出流 )YwLj&e4tf oP:R1< //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) ,,ML^ey public SiteFileFetch(SiteInfoBean bean) throws IOException _C|j"f/} { KYz@H#M siteInfoBean = bean; ]bstkf}~u //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); /`y^z"! tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); y,qn 9 if(tmpFile.exists ()) LIyb+rH#yg { wk1/& bFirst = false; )FfS7 C\. read_nPos(); =gZA9@]W2 } M<Dvhy[ else 6X4r2Vq { BD]o+96qP nStartPos = new long[bean.getNSplitter()]; 6k{gI.SG nEndPos = new long[bean.getNSplitter()]; 2 ksbDl} } )/2TU]// >
-(Zx rQ&XHG>Q* W?[
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au- } ?t/\ ID ln6=XDu OE _V6Er public void run() p
)WRsJ8 { J90
)v7 //获得文件长度 4sC)hAx&f //分割文件 X[SIk%{D //实例FileSplitterFetch nAX/u[ //启动FileSplitterFetch线程 GBT219Z@8 //等待子线程返回 Wy /5Qw~s try{ 7=qvu&{ if(bFirst) VM;vLUu!e { 3[ xHY@c nFileLength = getFileSize(); /R>YDout} if(nFileLength == -1) ^nDa-J$ { ~4mRm!DP System.err.println("File Length is not known!"); UoSc<h| } 8~|v:qk else if(nFileLength == -2) VAe[x
` { >Qg-dJt[ System.err.println("File is not access!"); D/,(xWaT } cu)B!#<!& else q &S@\b { O2U}jHsd for(int i=0;i<nStartPos.length;i++) pkTVQdtRG { b%d, X-3 nStartPos = (long)(i*(nFileLength/nStartPos.length)); iDltN]zS } ^E~1%Md. for(int i=0;i<nEndPos.length-1;i++) W[>qiYf^b { e-VGJxR nEndPos = nStartPos[i+1]; 7=&+0@R#/d } 0}'/3Q nEndPos[nEndPos.length-1] = nFileLength; K%u>'W } v`p@djM } (aq-aum-I 4i<GqG vV"I}L //启动子线程 QcjsQTAbk fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; NH*"AE; for(int i=0;i<nStartPos.length;i++) 7Rc>LI*
' { UVW4KUxR fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), vjA!+_I6 siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), @twi<U_ nStartPos,nEndPos,i); r>sXvzv Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); \c!e_rZ fileSplitterFetch.start(); #CW{y?= } gN*b~&G // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {xICR ~,* siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); l j+p}dt // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", k"m+i nEndPos = " + nFileLength); t%@u)b p // fileSplitterFetch[nPos.length-1].start(); ~3%aEj TKVS%// xZ
SDA8kS //等待子线程结束 ]Z52L`k //int count = 0; S@TfZ3Go| //是否结束while循环 &MB1'~Q,hq boolean breakWhile = false; ~n(LBA bkrl>Im<n *nv^s while(!bStop) CdtCxy5 { vN~joQ=d write_nPos(); !Y/S 2J Utility.sleep(500); ]3Jb$Q@ breakWhile = true; C^:{y ~4xn^.w ,| j\x for(int i=0;i<nStartPos.length;i++) KTeR;6oZn" { k`s_31< if(!fileSplitterFetch.bDownOver) 0n={Mb { Z>dvth breakWhile = false; r"t,/@`n break; bw!*=< } 1Ve~P"w } ~B7<Yg if(breakWhile) W*,$0 t break; 0_=^#r4Mu }1Q>A 5e ZS`9r16@b //count++; ;q#Pl!*5 //if(count>4) GgE
38~A4 // siteStop(); j(M.7Z7^ } Bw9O)++ Xo6zeLHO -U\s.FI.AR System.err.println("文件下载结束!"); $+,kibk*R } g!)*CP#; catch(Exception e){e.printStackTrace ();} 5,\|XQA5! } E
5mYFVK Q9Go}}n m6Qm }"" //获得文件长度 e2pFX? public long getFileSize() 2(P<TP._E { 1O1MB&5% int nFileLength = -1;
-$,'|\Y try{ Owv}lJ URL url = new URL(siteInfoBean.getSSiteURL()); n;QFy5HB8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); _:Jma httpConnection.setRequestProperty("User-Agent","NetFox"); p[;@9!t 8~O0P= B3I0H6O int responseCode=httpConnection.getResponseCode(); O5:[]vIn if(responseCode>=400) A+z}z@K { O:8Ne*L`D processErrorCode(responseCode);
=NWzsRl, return -2; //-2 represent access is error tJm1Q#|| } ):n'B` f}z 3-)R' gf^y3F[\ String sHeader; c(!pcB8 b=SCyGxlZ5 q2;CvoF for(int i=1;;i++) `trcYmR=k { 6LqF*$+$` //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Hr \vu`p$ //Utility.log(in.readLine()); kPO+M~+n sHeader=httpConnection.getHeaderFieldKey(i); w8#ji 1gX if(sHeader!=null) i8#:y`ai { 162Dj$ if(sHeader.equals("Content-Length")) &G?w*w_n { ~
cI`$kJ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 08g2? 5w" break; >x
]{cb/m } U}l=1B } at\$
IK_ else O>9-iqP>`d break; v9Lf|FXo& } 2;w> w#}> } iT+t catch(IOException e){e.printStackTrace ();} lbh7`xCR catch(Exception e){e.printStackTrace ();} /XdLdA!v &3itBQF zKh <zj Utility.log(nFileLength); ViUx^e\ }n
+MVJ;dG hI*6f3Vn(n return nFileLength; 'u_j5 } W'e{2u TxTxyYd mqY=N~/O //保存下载信息(文件指针位置) gb}ov** private void write_nPos() }^*`&Lh { qV-1aaA try{ uX6rCokr output = new DataOutputStream(new FileOutputStream(tmpFile)); &
sXMB output.writeInt(nStartPos.length); sXY{g0% for(int i=0;i<nStartPos.length;i++) o?aF { g``S SU // output.writeLong(nPos); c4bv Jy8 output.writeLong(fileSplitterFetch.nStartPos); 7Oi<_b output.writeLong(fileSplitterFetch.nEndPos); t&IWKu# } +KOhDtLMG output.close(); _<?z-K_;I } L:.Rv0XT catch(IOException e){e.printStackTrace ();} {yMkd4v catch(Exception e){e.printStackTrace ();} "S>VqvH3 } ZbH_h]1$D j_b/66JyN iaQFVROu //读取保存的下载信息(文件指针位置) Z5`V\$ private void read_nPos() PH?<)Wj9i { EEvi_Z932 try{ 51ILR9 Bc_ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); (.b!kfC int nCount = input.readInt(); 9QeBz`lm) nStartPos = new long[nCount]; <1`MjP*w nEndPos = new long[nCount]; OfeM;) for(int i=0;i<nStartPos.length;i++) INR RA { },O7NSG<o nStartPos = input.readLong(); Qh]k)]+*| nEndPos = input.readLong(); ]|[mwC4 } 7(H?3)%0 input.close(); }$* z:E } Q_*.1L catch(IOException e){e.printStackTrace ();} [lzH%0
V catch(Exception e){e.printStackTrace ();} AR
g]GV/L } |Vp
? ZR8y9mx2" V-"#Kf9 private void processErrorCode(int nErrorCode) aaI5x { SXV2Y- System.err.println("Error Code : " + nErrorCode); <irr.O } EWWCh0
{ JZqJ& eUD 5V //停止文件下载 {<cgeH public void siteStop() KSUhB {
af/0e}- bStop = true; J@rBrKC for(int i=0;i<nStartPos.length;i++) Ki /j\ fileSplitterFetch.splitterStop(); JQW7y!Z 2N.!#~_2 D V0_^==Vs } d^"|ESQEU } hzh3p[ //负责部分文件的抓取 $]a*ZHd;2& **FileSplitterFetch.java r_o\72 */ X#X/P package NetFox; J~N!. i }x_:v!G {H
3wL import java.io.*; .EjjCE/v- import java.net.*; DH.CAV zXe]P(p< 8C I\NR{x8 public class FileSplitterFetch extends Thread { :aD_>,n s2#}@b6'. <co:z<^lqu String sURL; //File URL }G"bD8+ long nStartPos; //File Snippet Start Position A'*#UYn( long nEndPos; //File Snippet End Position LDDt=HEY4 int nThreadID; //Thread's ID 2=|Ks]<P boolean bDownOver = false; //Downing is over Jb)xzUhES boolean bStop = false; //Stop identical
FWLLbL5t FileAccessI fileAccessI = null; //File Access interface '"6*C*XS 8]4W@~c xk^`4; public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException /8/N { ]Bz.6OR this.sURL = sURL; HrRw this.nStartPos = nStart; V\AF%=6} this.nEndPos = nEnd; }3-`e3 nThreadID = id; WHRBYq_ fileAccessI = new FileAccessI(sName,nStartPos);//定位 02^Nf7DMR }
)t,efg `mquGk|) tHFUV\D;, public void run() ;NGSJfn { 66po SZR@ while(nStartPos < nEndPos && !bStop) m;vm7]5 { l_ LH!Tu HUel Q@Cy\l try{ ];QX&";Z URL url = new URL(sURL); +t(Gt0+ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !{A#\~, httpConnection.setRequestProperty("User-Agent","NetFox"); l4^MYwFR{O String sProperty = "bytes="+nStartPos+"-"; :6Gf@Z&+ httpConnection.setRequestProperty("RANGE",sProperty); iq5-eJmq Utility.log(sProperty); W QeQ`pM [] R8VC>Ah GwmYhG<{ InputStream input = httpConnection.getInputStream(); G6X5`eLQ //logResponseHead(httpConnection); -I~\ `L3{y/U' :T#f&|Gg; byte[] b = new byte[1024]; Mp@dts/| int nRead; =3GgfU5k while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) ~;oaW<" { IkQ,#Bsb[ nStartPos += fileAccessI.write(b,0,nRead); bFJ>+ {# //if(nThreadID == 1) 9Wdx"g52_D // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); r$,Xv+} } -hGLGF?? $8Gj9mw4e' mD,fxm{G Utility.log("Thread " + nThreadID + " is over!"); &InFC5A bDownOver = true; gbFHH,@ //nPos = fileAccessI.write (b,0,nRead); L(HAAqRnJ } +y 48.5 catch(Exception e){e.printStackTrace ();} mS+sh'VH } ZD<e$PxxCd } O
2+taB f~f)6XU| =@d->d //打印回应的头信息 iVb7>d9} public void logResponseHead(HttpURLConnection con) /7WdG)' { `_3Gb for(int i=1;;i++) ?4_ME3$t { t*Z4&Sy^ String header=con.getHeaderFieldKey(i); .F0Q<s9 if(header!=null) h<g2aL21?F //responseHeaders.put(header,httpConnection.getHeaderField(header)); VD+v\X_ Utility.log(header+" : "+con.getHeaderField(header)); |[$TT$Fb else 7_L$ XIa break; t~Qj$:\ } -CTLQyj) } a*nCvZ
_DYe<f. Pt/F$A{Cj public void splitterStop() b\UE+\a& { )vGxF}I3 bStop = true; Y 9BKd78Y } +[[^W;<.l R'^J#"[ eo&G@zwN } zuJ@@\75 m=60a@o] g2YE^EKU~ /* z#6(PZC} **FileAccess.java z7&m,:M *//文件访问(定位,写) =RHIB1 package NetFox; l(8@?t^; import java.io.*; #d$lN}8 r>6FJ:Tx :,.HJ[Vg& public class FileAccessI implements Serializable{ ~eXI}KhBw6 $?DEO[p. //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 ,2mq}u>WU RandomAccessFile oSavedFile; m1RjD$fM long nPos; q<cxmo0S >oapw5~5 <Kk?BRxi public FileAccessI() throws IOException Xc<Hm { hwSxdT6 this("",0); ?2K~']\S } l=<},_]{ u&e?3qKX( w3"%d~/[x public FileAccessI(String sName,long nPos) throws IOException n9V8A[QJ { 5e^z]j1Yv oSavedFile = new RandomAccessFile(sName,"rw"); i4)]lWnd this.nPos = nPos; FaKZ|~Y
e oSavedFile.seek(nPos); RG_6&
A } y]uBVn'u }-p-( #r@>.S=U] public synchronized int write(byte[] b,int nStart,int nLen) .i1|U8" X { 88l{M[B2 int n = -1; p\tA&>3- try{ .+5;AtN oSavedFile.write(b,nStart,nLen); &
z5:v-G? n = nLen; dA0o{[o= } fjm3X$tR catch(IOException e) Y0ACJ?| { l7(p~+o?h> e.printStackTrace (); QiNLE'19^ } 27Vx<W CW,|l0i e_3B\59k return n; "j=E8Dd} } ,8stEp9~h] {&nDm$KTD QM{B(zH } Ib"fHLWA^! Cjj(v7[E H:mcex /* Li\b,_C **SiteInfoBean.java jOL=vG */ lN_b&92 package NetFox; gj82qy\: -'Z-8 fBKN?]BdN public class SiteInfoBean { (Vt5@25JW Q>TNzh jV#1d8qm private String sSiteURL; //Site's URL WP PDvB private String sFilePath; //Saved File's Path /`7G 7pQ+ private String sFileName; //Saved File's Name J!yK/*sO, private int nSplitter; //Count of Splited Downloading File M[L@ej 8]WcW/1r ! s 4n<k]d public SiteInfoBean() i1!Y{ {//nSplitter的缺省值为5
&0OH:P% //default value of nSplitter is 5 B.#-@ this("","","",5); |oR#j
` } vhN6_XD .GvZv> {T3wOi public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) X @X`,/{X { 4hW:c0 sSiteURL= sURL; tD]vx`0> sFilePath = sPath; LftzW{>gI" sFileName = sName; jK2gc^"t this.nSplitter = nSpiltter; y 48zsm{ /Ur]U
w peVzF'F } #/)U0IR) r<'B\.#tp> 9/O\769"' public String getSSiteURL() UL xgvq { \mw5
~Rf; return sSiteURL; >dwY(a } H h%|}*f_, 'i 8`LPQ pMkM@OH
public void setSSiteURL(String value) +l<;?yk:; { pK)!o sSiteURL = value; q[c^`5 } F`o"t]AD-a unyU|B \3O1o#=( public String getSFilePath() ,N8SP
'R { yg"FF:^T return sFilePath; Q>uJ:[x+ } R)%I9M, ~ _ko$(;A && WEBQ public void setSFilePath(String value) S*H
@`Do%d { \_/dfmlIZ sFilePath = value; MFqb_q+ } P}
Y .
"}:SXAZ5` :PBW=W public String getSFileName() m2Wi "X(I_ { LKst
QP!I return sFileName; B8zc#0!1 } `bZgw ^C;ULUn3 |43Oc:Ah+ public void setSFileName(String value) 'NDr$Qc3 { r^,"OM] sFileName = value; #}[NleTVt } U+VyH4" y.::d9v i L'j9_w, public int getNSplitter() l^rQo_alk { D~ 7W return nSplitter; FMC]KXSd } {G{>Qa| ]m#*4 v+'*.Iv: public void setNSplitter(int nCount) {%6g6?=j { ,jeC7-tX nSplitter = nCount; <,Jx3yq } 24
RD } Kae-Y \
F)}brPc LmP pt3[ /* )&ucX **Utility.java
g hW */ eqqnR.0 package NetFox; i\kDb= Nu+DVIM z]!w@: public class Utility { i ~rb-~o rg I Z |]b,% ?,U public Utility() fRp(&%8E { X5=I{eY} fPG3$<Zr ,Eo\(j2F. } h/*@ML+bB8 dyl1~'K^ //线程睡眠 n39EKH rm% public static void sleep(int nSecond) _ U Y5 { cuL/y$+EY try{ uz;eYD Thread.sleep(nSecond); l6.&<0pLT } ?3<Y/Vg%c catch(Exception e)
Fp>nu _-" { LXf|n e.printStackTrace (); 40 zO4 } c, }VC- } xggF:El3{ \9]-(j6[H //日志 imyfki $B public static void log(String sMsg) Au*1- { c~!ETwpHQ System.err.println(sMsg); .>Fpk7 } 877Kv); 'Qg.D88 &5QvUn public static void log(int sMsg) x|g2H.n { 8[:G/8VI System.err.println(sMsg); Nop61zj } /`j2%8^N } g-cg3Vso K+P a b ? Wlp`D /* \ZBz]rh* **TestMethod.java \xmDkWzE */ _AH_<Z( package NetFox; <|hrmwk| R0-Y2v zO0K*s.yK public class TestMethod { c,#Nd@ @[{5{ y rVp^s/A^; public TestMethod() @?&
i { ///xx/weblogic60b2_win.exe IH.EvierJ try{ LVdtI SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); (*\y //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); LdnTdh? SiteFileFetch fileFetch = new SiteFileFetch(bean); @@=,bO fileFetch.start(); TW=N+ye^1( } {,= hIXo> catch(Exception e){e.printStackTrace ();} _WI~b ZHCrKp A>\3FeU>UC } (R(NEN Bk5ft4v- SBY0L. public static void main(String[] args) ^!x qOp! { n%!50E6*: new TestMethod(); %1)J Rc } zbfe=J4c } .`oKd@I*" 点击下载更多相关资料
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