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/* sKniqWi **SiteFileFetch.java +d289" */ gNaB^IY package NetFox; 8r\;8all import java.io.*; 5)=YTUCk import java.net.*; &fRZaq'2R >0AVs6&;v RA3!k&8?# public class SiteFileFetch extends Thread { @UwDsx&2(t ++|vy~T XdV(=PS!a@ SiteInfoBean siteInfoBean = null; //文件信息Bean D=_FrEM_IA long[] nStartPos; //开始位置 9>!B .Z?!# long[] nEndPos; //结束位置 )+dd FileSplitterFetch[] fileSplitterFetch; //子线程对象 ud$*/ )/ long nFileLength; //文件长度 LEJn
1 boolean bFirst = true; //是否第一次取文件 O
<#H5/Tq boolean bStop = false; //停止标志 8h$f6 JE File tmpFile; //文件下载的临时信息 j1i<.,0g DataOutputStream output; //输出到文件的输出流 &Ndq^!e d3&l!DoX //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) kNC]q,ljt5 public SiteFileFetch(SiteInfoBean bean) throws IOException aQ#6PO7.Z { {Q/_I@m]. siteInfoBean = bean; ( SiwO.TZ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 4<<T#oW.:G tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;vp[J&= if(tmpFile.exists ()) q'CtfmI`r= { yr[HuwU bFirst = false; jA,|.P> read_nPos(); %Q. |qyq } ) mh,F#"L else ?Vo/mtbY5X { ]S0sjN nStartPos = new long[bean.getNSplitter()]; 3v,Bg4[i nEndPos = new long[bean.getNSplitter()]; )ad6>Y } T(q/$p&q w#w?Y!JXo ){FXonVP x~n]r[!L } 3x3 =ke! mNdEn<W MzpDvnI9 public void run() X{-901J1 {
R7NE=X4 //获得文件长度 qt,;Yxx#^ //分割文件 Tq,xW //实例FileSplitterFetch "Cn<x\E b //启动FileSplitterFetch线程 o`%;*tx //等待子线程返回 up
)JU [ try{ @3WI7q4 if(bFirst) +I[Hxf ~ { 5K[MKfT nFileLength = getFileSize(); 1Farix1YDq if(nFileLength == -1) 5o2vj8:: { hw)#TEt System.err.println("File Length is not known!"); 'E_~> } p)YI8nW else if(nFileLength == -2) _2wH4^Vb { Cw,;>>Y_b< System.err.println("File is not access!");
.NRSBk } nv}z%.rRUj else *]+5T-R% $ { rpMjDjW for(int i=0;i<nStartPos.length;i++) /~}<[6ZGCY { yl UkVr
nStartPos = (long)(i*(nFileLength/nStartPos.length)); rw%1>]os } Mx_O'D for(int i=0;i<nEndPos.length-1;i++) 54>gr1B { {-.ZFUZmT nEndPos = nStartPos[i+1]; &!0%"4 } ZK$<"z6{ nEndPos[nEndPos.length-1] = nFileLength; bPHtP\) } Rpou.RrXR7 } 8%#pv} ]>H'CM4JR w[hT,$n //启动子线程 OTV$8{ fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; I*OJPFZ^4 for(int i=0;i<nStartPos.length;i++) QNxY` { Mcm%G# fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L)-1( e<x siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), TV[@!E a nStartPos,nEndPos,i); H?$gHZPI Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); (GB*+@ fileSplitterFetch.start(); :7 OhplI } Rt3/dw(p // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), "C'T>^qw* siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); u3])_oj= // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", ~=i<O&nai nEndPos = " + nFileLength); jPA^SxM // fileSplitterFetch[nPos.length-1].start(); &KPJB"0L WwAvR5jq 3R)_'!R[B
//等待子线程结束 \>lDM //int count = 0; |]+PDc% //是否结束while循环 ^J?y
mo$>0 boolean breakWhile = false; [a!*m< Z?j4WJy-[ 2YhtD A while(!bStop) :WHbwu,L$ { KreF\M%Ke write_nPos(); 5sI9GC Utility.sleep(500); #{x4s? breakWhile = true; pL pBP+i I`4k5KB; m'YYkq(5%Z for(int i=0;i<nStartPos.length;i++) B0dv_'L}L { ]m@p? A$
if(!fileSplitterFetch.bDownOver)
iJVm=0WS^ { +_v#V9? breakWhile = false; mz?1J4rt break; Fa-F`U@h(m } 2{I+H'w8: } }KFM8CbS if(breakWhile) g ^ 4<ve break; {1m.d;(1 XO,gEn&6V tA {?-5 //count++; xXfFi5Eom //if(count>4) _(0GAz%9 // siteStop(); vuO~^N]G } =5u;\b>* (8jQdbZU st-I7K\v System.err.println("文件下载结束!"); f\h|Z*Bv
} = @n `5g catch(Exception e){e.printStackTrace ();} 1,Ji|&Pwf } q:-1ul cC7&]2X +f w i=&W //获得文件长度 1qd(3A41 public long getFileSize() d6+{^v$# { 5~\GAjf int nFileLength = -1; %W,V~kb try{ A`ScAzx5{ URL url = new URL(siteInfoBean.getSSiteURL()); uG{/yJeU HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); HrH!
'bd httpConnection.setRequestProperty("User-Agent","NetFox"); #xfPobQ>il 0p[-M`D 4)+L(KyB2 int responseCode=httpConnection.getResponseCode(); .y^T3?}I if(responseCode>=400) 9KDm<Q-mf { Rn5{s3?F~2 processErrorCode(responseCode); YW'l),Z return -2; //-2 represent access is error {LoNp0i1a } #S') i1; U2kl-E: thrv_^A String sHeader; 2R>!Wj'G+o DhzmC KxUO=v<u for(int i=1;;i++) {D7v[P+ { K\y
W{y1 //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); DE!P[$J //Utility.log(in.readLine()); 4M*!'sG\ sHeader=httpConnection.getHeaderFieldKey(i); ql(~3/kA_ if(sHeader!=null) )bR`uV9< { [6cf$FS9 if(sHeader.equals("Content-Length")) u]jvXPE6 { z-G*:DfgH nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 1CA%nqlng break; }x(Ewr } gN5;Uk } /\d@A B^5I else =L&dV]'4P break; 9
gWqs' } 5[|ZceY } qz&?zzz; catch(IOException e){e.printStackTrace ();} u?lbC9}$ catch(Exception e){e.printStackTrace ();} 5 ]l8l+ TpAso[r (;cvLop Utility.log(nFileLength); U]64HuL %WAaoR&u H rI(uZ] return nFileLength; lCiRvh1K } e(Y5OTus '-M9v3itC &"mWi-Mpl //保存下载信息(文件指针位置) ~R
C\ private void write_nPos() zp:EssO=Q { <(W:Q3?s try{ xY<*:& output = new DataOutputStream(new FileOutputStream(tmpFile)); y?ypRCgO.u output.writeInt(nStartPos.length); HA]5:ck for(int i=0;i<nStartPos.length;i++) T/iZ"\(~w { )kvrQ6 // output.writeLong(nPos); |ohCA&k%; output.writeLong(fileSplitterFetch.nStartPos); v9XevLs output.writeLong(fileSplitterFetch.nEndPos); =}
flmUv~ } E?cf#;2h8m output.close(); ]3I@5 }5% } m)e~HP7M catch(IOException e){e.printStackTrace ();} rB}2F*eT catch(Exception e){e.printStackTrace ();} ^C70b)68 } [,Fu2j] Ob@HzXH n7(/ml+Q_ //读取保存的下载信息(文件指针位置) ?#Y1E~N private void read_nPos() u
-A_l<K { wrAcVR try{ bD<hzOa DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); H-jxH,mJmW int nCount = input.readInt(); (Ky$(Ubb#6 nStartPos = new long[nCount]; JGQ)/( nEndPos = new long[nCount];
,)Z1&J? for(int i=0;i<nStartPos.length;i++) *Z2#U?_ { #@}wl nStartPos = input.readLong(); \vF*n Z5/ nEndPos = input.readLong(); aqKrf(Rv } )W |_f input.close(); _FP'SVa}D } Eu`K2_b catch(IOException e){e.printStackTrace ();} p61F@=EL catch(Exception e){e.printStackTrace ();} @f`s%o } iG+=whvL ChRCsu~ O~D]C private void processErrorCode(int nErrorCode)
grTwo { !]l;n
Fd System.err.println("Error Code : " + nErrorCode); g4}K6)@ } Nc:0opPM :aWC6"ik-W $\q}A: //停止文件下载 l,:>B-FV public void siteStop() 5~{s-Ms { _NN5e|t bStop = true; ]^I[SG, for(int i=0;i<nStartPos.length;i++) H'%#71 fileSplitterFetch.splitterStop(); Nbd[xs-lw sDP8! } bm ^`QY } ]+d>;$O } 'pC51}[A{^ //负责部分文件的抓取 C(&3L[ **FileSplitterFetch.java tb;u%{S */ 51Q~/ package NetFox; vBYk"a6SD #BwOWra j
W/*-: import java.io.*; -> `R[k import java.net.*; ]; *?`}# W4$F\y A9o"L.o) public class FileSplitterFetch extends Thread { ub]"b[j\1 5v"S v 2 sK\.yS String sURL; //File URL <8BNqbX long nStartPos; //File Snippet Start Position %:yVjb,Yf long nEndPos; //File Snippet End Position Vu;z|L int nThreadID; //Thread's ID
J7p?9 boolean bDownOver = false; //Downing is over Vw+RRi( boolean bStop = false; //Stop identical +k\cmDcb FileAccessI fileAccessI = null; //File Access interface }TRVCF1 +l;A L5h b] ~ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ?<U">8cP { S^_F0</U, this.sURL = sURL; @waY+sqt= this.nStartPos = nStart; S=qx,<J
39 this.nEndPos = nEnd; 2>/}-a nThreadID = id; q@XxCP] fileAccessI = new FileAccessI(sName,nStartPos);//定位 iyP0;$ } kerBy\^ TnJJ& "~3b Ny
G?^ public void run() #]z_pp: { @6%o0p9zz while(nStartPos < nEndPos && !bStop) M?QX'fia { O6n]l l(d3N4iz #A=ER[[ try{ hE;BT>_dn URL url = new URL(sURL); zR5KC!xc HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3 uJ?; httpConnection.setRequestProperty("User-Agent","NetFox"); qz8Jvgu? String sProperty = "bytes="+nStartPos+"-"; W~Q;R:y httpConnection.setRequestProperty("RANGE",sProperty); oa6&?4K?F Utility.log(sProperty); RLbo 1"~$(@oxG 0,j!* InputStream input = httpConnection.getInputStream(); }NKnV3G/Z //logResponseHead(httpConnection); l!j,9wz7 DeTLh($\ G<Y}QhFU byte[] b = new byte[1024]; -YY@[5x?u int nRead; {9-n3j} while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 0X}0, { sF~!qag4q' nStartPos += fileAccessI.write(b,0,nRead); qv3% v3\4 //if(nThreadID == 1) #7=- zda5 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); n a+P|'6 } }s:~E2?In eDY)i9"W PLRMW2 Utility.log("Thread " + nThreadID + " is over!"); }-~LXL%!3 bDownOver = true; Rk!8eN Pf //nPos = fileAccessI.write (b,0,nRead); vfdTGM`3 } rY295Q catch(Exception e){e.printStackTrace ();} \nU_UH } a LJ
d1Q }
Ww=b{lUD <jG[
z69) [" sm7yQ //打印回应的头信息 CvRO' public void logResponseHead(HttpURLConnection con) q``:[Sz { *+_+ZDU for(int i=1;;i++) C sCH :> { mb*|$ysPx String header=con.getHeaderFieldKey(i); uMX\Y;N if(header!=null) F~?|d0
//responseHeaders.put(header,httpConnection.getHeaderField(header));
Z31a4O Utility.log(header+" : "+con.getHeaderField(header)); w#{S=^`} else iC~ll!FA! break; }ZJJqJ`*e } .p(%gmOp# } ~8U 0(n:^ pyp0SGCM: >tE6^7B* public void splitterStop() #,9#x]U#v { qm< mw"] bStop = true; _ O;R } \`R8s_S Fb6d1I^wR #~[{*[B+ } ^Vg-fO]V xB5QM #w\ u,./,:O%= /* s&1}^'| **FileAccess.java v\D.j4%ij *//文件访问(定位,写) N5.kDT package NetFox; BH0s` K" import java.io.*; :ZadPn56 C4)m4r% mI5!rrRD| public class FileAccessI implements Serializable{ >1$Vh=\OI 'cA(-ghY/E //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 PQP|V>g RandomAccessFile oSavedFile; KpT=twcK long nPos; rp=Y } w%- S5# ,,]<f*N public FileAccessI() throws IOException wK0],,RN,h { r!~6. this("",0); |q
c <C&O } d&naJ)IoF) .0p'G}1 Ll, U>yo public FileAccessI(String sName,long nPos) throws IOException X'j9l4Ph7 { yz=aJ
v;
H oSavedFile = new RandomAccessFile(sName,"rw"); /Ow@CB this.nPos = nPos; myF/_o&Ty oSavedFile.seek(nPos); p#
|}
o9 } onl,R{,`0 (U@$gkUx}G 5,?^SK|'x public synchronized int write(byte[] b,int nStart,int nLen) B`:l;<&jX { f o idneus int n = -1; TQth"Cv2: try{ 1p8hn!V oSavedFile.write(b,nStart,nLen); T\"-q4+=C n = nLen; (wf3HEb_ } OoQLR catch(IOException e) mDO! o { ZE9.r` e.printStackTrace (); "O~kIT?/v } 49YN@PXC mJYD"WgY A_crK`3 return n; /!fJ`pu! } gBOF#"- Hyi'z 1 F?t;bV } 3Hi8=* 7"1]5\p^g $g),|[x+( /* `pF7B6[B **SiteInfoBean.java &Bqu2^^ */ i&{%}==7 package NetFox; ;9LOeH? =MT'e,T XSGBC:U)l public class SiteInfoBean { =|dHD V>D}z8w7 ,&L}^ Up private String sSiteURL; //Site's URL V[n,fEPBr private String sFilePath; //Saved File's Path ja6V*CWb private String sFileName; //Saved File's Name %M:$ML6b< private int nSplitter; //Count of Splited Downloading File fk!9` p' sG\K$GP! ]E6r)C public SiteInfoBean() x"r,l/gzy {//nSplitter的缺省值为5 k8r1)B4ab //default value of nSplitter is 5 wNU;gz this("","","",5); j4u
["O3 } M3r;Pdj2r VOIni<9y e^;%w#tEqI public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) P3nBxw" { dsH*9t:z sSiteURL= sURL; TFAR>8Nm sFilePath = sPath; VfozqUf sFileName = sName; Wb[k2V this.nSplitter = nSpiltter; ("{"8 }Rw6+; X4{<{D`0t8 } "Q{l])N | AiMx2
EWr7eH public String getSSiteURL() 0T^0)c { )?pnV":2Y return sSiteURL; )j\_*SoH } q@tym5 )sNPWn8<Uy =3!o_ public void setSSiteURL(String value) p$uPj*
{ *f_A:`: sSiteURL = value;
7iyx_gyo
} M8/:PmR< XUnw*3tPJ T#wG]DH; public String getSFilePath() pRd'\+ { vPc*x5w- return sFilePath; ,HI%ym } Io[NN aF| Qqx!'fft Cy*.pzCi public void setSFilePath(String value) :wG
) { kdp^{zW} sFilePath = value; #Ge_3^' } jOzi89 ^bP`Iv zWH)\>X59 public String getSFileName() x,zYNNx5g { ib~i ^_p return sFileName; lQBEq"7$ } 7?{y&sf `'&mO9,<- J_;*@mW public void setSFileName(String value) QZIzddwp { ('AAHq/ sFileName = value; HUAYtUBH } paLPC&G W6_ rSVm o8|qT)O@U public int getNSplitter() v$w}UC%uf { p|8ZHR+ return nSplitter;
{f@Q&(g } vbd)L$$20+ /'5d0' ,M \P")Eh =d public void setNSplitter(int nCount) V)l:fUm2 { Dh}(B$~Oz+ nSplitter = nCount; 'nBP% } vZ811U~} } GC' e ir"t@"Y;o =5Nh}o(l? /* O ;[Mi **Utility.java z;F HZb9t, */ O"Nr$bS(Y package NetFox; RRV%g! K&Bbjb_| Em^~OM3U$q public class Utility { I
"O^.VC j7lJ7BIr CtV|oeJ public Utility() &$
"J\vm { ^X}r ^ ^L)TfI_n MfHOn YV } 6@t& .xWaS8f //线程睡眠 K3M.ZRh\;` public static void sleep(int nSecond) '^>}
=f { k sXQ}BE try{ #QIY+muN Thread.sleep(nSecond); 4(LLRzzW } h`dQOH# catch(Exception e) BgQ/$, { J?yasjjgP e.printStackTrace (); BxjSo^n } RL/y7M1j } [P =P8-5 A[ncwJ //日志 MP)Prl> public static void log(String sMsg) kfZ`|w@q { u~ipB*Zf System.err.println(sMsg); aHmg!s}& } $
P5K Pd\4hy NsP=l] public static void log(int sMsg) <kPNe>-f { ZTV)D System.err.println(sMsg); ]% HxzJ } FHw%ynC } Mms|jFoQ yn_f%^!G -0#"<!N /* z!O;s
ep?/ **TestMethod.java #dL,d6a */ r KUtTj package NetFox; 0NGth(2 z k/`Uz 6QCVi public class TestMethod { W"\}## J8p; 1-C" n]`]gLF\i public TestMethod() ndzADVP { ///xx/weblogic60b2_win.exe a1y<Y`SC9 try{
Um{) ?1 SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); {?0'(D7. //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); %UrNPk SiteFileFetch fileFetch = new SiteFileFetch(bean); -^2p@^ fileFetch.start(); b4-gNF]Yt } SsTBjIX catch(Exception e){e.printStackTrace ();} 6qFzo1LO uX3yq<lK" ?'+]d;UO& } cZ|*Zpk D]fuX|f~ul v:QUwW public static void main(String[] args) )'T].kWW { i0K 2#}=^ new TestMethod(); PdqvXc } ?Y3i-jY } Zf3(!
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