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/* a'r8J~:jy **SiteFileFetch.java 9#cPEbb~ */ #%5[8~& package NetFox; 0w<vc}{t import java.io.*; &P' d&B1
import java.net.*; 6 b-'Hu i+ G
LU7?2`t >{R+j4% public class SiteFileFetch extends Thread { 'ioX,KD UXgeL2`; V(wm?Cc] SiteInfoBean siteInfoBean = null; //文件信息Bean /fgy 07T long[] nStartPos; //开始位置 yzWVUqtXm long[] nEndPos; //结束位置 :< X&y FileSplitterFetch[] fileSplitterFetch; //子线程对象 '3Ro`p{ long nFileLength; //文件长度 ;#)sV2F\& boolean bFirst = true; //是否第一次取文件 +7E&IK boolean bStop = false; //停止标志 .|UIZwW0 File tmpFile; //文件下载的临时信息 m9Xauk$( DataOutputStream output; //输出到文件的输出流 l^!raoH]q ;XagLy //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) \
]v>#VXr_ public SiteFileFetch(SiteInfoBean bean) throws IOException xe`SnJgA { >W>3w siteInfoBean = bean; o 4P>t2' //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); &uP,w# tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); eU(cn8/} if(tmpFile.exists ()) 7G':h0i8 { %/.yGAPkx bFirst = false; _O#R,Y2# read_nPos(); cfSQqH } Yc^;?n`x else yVfF
*nG { vb.}SG> nStartPos = new long[bean.getNSplitter()]; }-/oL+j nEndPos = new long[bean.getNSplitter()]; 0(qtn9;=2 } 0fE?(0pBj !KC4[;Y [jnA? Ge: ++\s0A(e } Jo'~oZ$ (! a;}V<7 03Uj0.Z|7 public void run() 4p<c|(f# { )kIZmQ|f1 //获得文件长度 Fa0Fl}L //分割文件 dC>[[_ //实例FileSplitterFetch Xx,Rah)X3 //启动FileSplitterFetch线程 s+0n0C //等待子线程返回 T|k_$LH try{ Kt3T~k if(bFirst) {Ri6975 { 2=IZD `{! nFileLength = getFileSize(); s.$:.*k if(nFileLength == -1) JCjV, { cB0"vbdO System.err.println("File Length is not known!"); -J":'xCP! } Lrjp else if(nFileLength == -2) z"\<GmvB { k5g vo System.err.println("File is not access!"); p54e'Zb } -[}Ah NYK else &iO53I^r/ {
#sm@|'Q% for(int i=0;i<nStartPos.length;i++) |BEoF[1 { ] kdU]}z nStartPos = (long)(i*(nFileLength/nStartPos.length)); HuLvMYF } ak_n for(int i=0;i<nEndPos.length-1;i++) *JArR1J { O-(gkE nEndPos = nStartPos[i+1]; 7hlzuZob+y } ]?sw<D{ nEndPos[nEndPos.length-1] = nFileLength; sjy/[.4- } @HQqHO&N } Esdv+f}4; xey?.2K1A * `3+x //启动子线程 Owz>g4l
r fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; |33_=" for(int i=0;i<nStartPos.length;i++) {Q021*xt/ { bQ`2ll*( fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), '$h0l-mQ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 0ky3rFSh1 nStartPos,nEndPos,i); 1VA%xOURh Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); m`&6[[)6~ fileSplitterFetch.start(); RveEA/&& } mXT{c=N)w // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), L"L a| siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); a(_3271 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", '
-td/w nEndPos = " + nFileLength); ^!6T,7B B // fileSplitterFetch[nPos.length-1].start(); )O ,+'w? yRWZ/,9x PG{"GiZz= //等待子线程结束 )uO 3v //int count = 0; E?h'OR@_ L //是否结束while循环 5Z>+NKQ boolean breakWhile = false; F%I*m^7d uQl=?085 Rhzcm`" while(!bStop) Og1Hg
B3v { |@rYh-5 write_nPos(); PmA_cP7~ Utility.sleep(500); x75 3o\u! breakWhile = true; ]]hsLOM] 2OwO|n ow9Vj$m for(int i=0;i<nStartPos.length;i++) 0Wb3M"#9< { YK V"bI
if(!fileSplitterFetch.bDownOver) (m() r0:@ { 2Uy}#n|)r breakWhile = false; u vyvy break; F\ %PB p } u>.>hQ } ~>uu1[/ if(breakWhile) ,-V7~gM%} break; Lpk`qJ F~l:WQAj 5XZ\7Z| //count++; m^;A]0h+ //if(count>4) 6C- !^8[f // siteStop(); T#3`&[ } `;Xwv) K 5AArI YH3[Jvzf4 System.err.println("文件下载结束!"); =k2"1f~e } s x) x7 catch(Exception e){e.printStackTrace ();} tC&jzN" } |DUOyQ Es&'c1$^s $yZ(ws //获得文件长度 Q oWjC public long getFileSize() KV|ywcGhT { d[&Ah~, int nFileLength = -1; kOV6O?h try{ ;'oi7b URL url = new URL(siteInfoBean.getSSiteURL()); 84c[ Z HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 7jPn6uz>w httpConnection.setRequestProperty("User-Agent","NetFox"); :Oc&{z?q (*G'~gSX {%8=qJ3@ int responseCode=httpConnection.getResponseCode(); E#`JH if(responseCode>=400) {\5-b:#_ { Ip*[H#h processErrorCode(responseCode); :i]g+</ return -2; //-2 represent access is error Cgn@@P5ZC } |dqvv 1A{iUddR QW>(LG G= String sHeader; h<FEe~ [zhcb+^5l O;RNmiVoq for(int i=1;;i++) ;Rd\yAG { 6gD|QC~; //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); l`vr({A //Utility.log(in.readLine()); k6??+b:rE sHeader=httpConnection.getHeaderFieldKey(i); y:dwx *Q9I if(sHeader!=null) ?v Z5 ^k { 4.'KT;[_1/ if(sHeader.equals("Content-Length")) B=hJ*;:p { !gG\jC~n nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 0u8(*? break; 5U.,iQ(d } )q'~<QxI\ } uH8`ipX else &>z}u&oF break; Bk8 '*O/) } ;/ao3Q } 1a;&&!X catch(IOException e){e.printStackTrace ();} UE/N-K)` catch(Exception e){e.printStackTrace ();} %M;{+90p>t 0= -D g#<M/qn Utility.log(nFileLength); dWhF[q" 0:k ~lz *,p16"Q; return nFileLength; Vr<ypyC } D(gpF85t -QP&A >]7 gfAVxMg //保存下载信息(文件指针位置) 'gv7&$X}4 private void write_nPos() g bwg3$!9 { !Mk:rO-L try{ ,__|SnA. output = new DataOutputStream(new FileOutputStream(tmpFile)); s`"ALn8m output.writeInt(nStartPos.length); .X(ocs$} for(int i=0;i<nStartPos.length;i++) da53XEF& { ^p!bteA> // output.writeLong(nPos); LdY aJh~h output.writeLong(fileSplitterFetch.nStartPos); |h65[9DMP output.writeLong(fileSplitterFetch.nEndPos); -}r(75C } ^Sz?c_<2P output.close(); d
3}'J } od~`q4p1(- catch(IOException e){e.printStackTrace ();}
js8\" catch(Exception e){e.printStackTrace ();} 7<c&)No; } S~4HFNe^& i*%2 e) }V
%b //读取保存的下载信息(文件指针位置) \^%5! private void read_nPos() Y/w) VV { 9 ulr6 try{ P1mPC DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); _G5MQ%z int nCount = input.readInt(); yy-\$<j nStartPos = new long[nCount]; +qEvz<kch nEndPos = new long[nCount]; #]5|Qhrr+ for(int i=0;i<nStartPos.length;i++) WS)u{
or { O@bDMg nStartPos = input.readLong(); CmPix]YMQ nEndPos = input.readLong(); ICgyCsZ, } $\@yH^hL input.close(); 5PlTf?Ao } t#h<'?\E catch(IOException e){e.printStackTrace ();} $MG. I[h catch(Exception e){e.printStackTrace ();} `;R|SyrX } -/#tQ~{gs <ArP_!
`3 kV Z5>D$ private void processErrorCode(int nErrorCode) ywV8s|o { c/57_fOK System.err.println("Error Code : " + nErrorCode); 20f):A6 } R4|<Vp<U2 l7r!fAV-f IK-E{,iKc //停止文件下载 `-N&cc public void siteStop() <~Tlx: { wp,z~raaS bStop = true; S,,3h0$X for(int i=0;i<nStartPos.length;i++) Az2$\ fileSplitterFetch.splitterStop(); :22IY>p Th%1eLQ b\w88=| } PaFJw5f } ft[g1 //负责部分文件的抓取 Yn}_"FO' **FileSplitterFetch.java TPds )osZT */ >cD+&h34 package NetFox; w%k)J{\ O/\jkF #7U,kTj9 import java.io.*; '.@R_sj import java.net.*; 5 b[:B~J 6Bp{FOj:Ss #?i#q%q public class FileSplitterFetch extends Thread { 5@Q4[+5&_ K0\a+6kh D.<CkDB String sURL; //File URL lq_W;L long nStartPos; //File Snippet Start Position 88U4I long nEndPos; //File Snippet End Position _A)<"z0E int nThreadID; //Thread's ID ZjEO$ts=@ boolean bDownOver = false; //Downing is over *ftJ( boolean bStop = false; //Stop identical Prhq ~oI4 FileAccessI fileAccessI = null; //File Access interface ,/W<E $YSD%/c &bj :,$@ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _:'m/K3Ee { VJCh5t* this.sURL = sURL; S53%*7K. this.nStartPos = nStart; Whd4-pR8 this.nEndPos = nEnd; z[v5hhI)4 nThreadID = id; uU.9*B=H9 fileAccessI = new FileAccessI(sName,nStartPos);//定位 |-_5ouN. } 54J<ZXCs
d=qpTb;( ^MJGY,r6b public void run() {u.V8%8 { NTL#! while(nStartPos < nEndPos && !bStop) aG}9Z8D {
o@LjSQ5! faO8
& ?3}UO:B try{ 2J4|7UwJ URL url = new URL(sURL); 6eDIS|/ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); j|`{
1`' httpConnection.setRequestProperty("User-Agent","NetFox"); @L<[38 String sProperty = "bytes="+nStartPos+"-"; 2hJ{+E.m httpConnection.setRequestProperty("RANGE",sProperty); w ^<Y5K Utility.log(sProperty); Km <Wh= cZ!s/^o?f l IFt/ InputStream input = httpConnection.getInputStream(); ^Nsl5 //logResponseHead(httpConnection); @5?T]V g Q5,@P? H;sQ]:.*] byte[] b = new byte[1024]; R^B2J+O int nRead; @i{JqHU" while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 3K?0PRg { mzT} C&hfP nStartPos += fileAccessI.write(b,0,nRead); )b%c]! //if(nThreadID == 1) "{x~j\< // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); K%pmE?%,8 } #dpt= <,E*,&0W 99ha/t Utility.log("Thread " + nThreadID + " is over!"); 0X0D8H(7Q bDownOver = true; ;n;^f&;sJ //nPos = fileAccessI.write (b,0,nRead); s3+O=5 } gw*d"~A catch(Exception e){e.printStackTrace ();} Xl/G|jB9 } /hX"O?^ } @&Nvb.5nT KV5lpN PC 4*+EUJ| //打印回应的头信息 7@lXN8_f public void logResponseHead(HttpURLConnection con) j&Hn`G { *(vq-IE\$ for(int i=1;;i++) -YuvEm#f { h+74W0
$ String header=con.getHeaderFieldKey(i); <y.D0^68 if(header!=null) "q`%d_ //responseHeaders.put(header,httpConnection.getHeaderField(header)); EkL\~^ Utility.log(header+" : "+con.getHeaderField(header)); uf;q/Wr else Vd?v"2S(9 break; m_(hCY=Q$ } i52R,hz }
yX-xVvlv@ s^oNQ} \9}5}X_x. public void splitterStop() @qC:% |> { c"YK+2 bStop = true; 0&.lSwa } q9
;\B& b;t]k9:"L -Y[-t; } t~M<j|]k y[|g!9Rp =+"'=o /* ;yZ N
"r **FileAccess.java RE .@ +A *//文件访问(定位,写) iCK$ o_`? package NetFox; O5{XT]: import java.io.*; u.[JYZ
V1:3 *h4m<\^U public class FileAccessI implements Serializable{ Eo Urc9G2 <!N;(nZ9}O //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 z}8YrVr@ RandomAccessFile oSavedFile; j?,*fp8 long nPos; u W|x)g11a -*lP1Nbp A C^[3 public FileAccessI() throws IOException ,xz^k/. { vQ/\BN this("",0); *_QHtZG } NNE,|
: ;iORfUjxrq K D-_~uIF public FileAccessI(String sName,long nPos) throws IOException PbPP1G') { ]= NYvv>H oSavedFile = new RandomAccessFile(sName,"rw"); Dq?HUb^X this.nPos = nPos; +zdkdS,2< oSavedFile.seek(nPos); +r$.v|6 } /
3k\kkv! 5lxq-E3 z{g<y^Im+E public synchronized int write(byte[] b,int nStart,int nLen) 5 WppV3; { u-9t s int n = -1; _;q-+"6L; try{ `fkrik oSavedFile.write(b,nStart,nLen); na3kHx@ n = nLen; D&r8V;G[[ } 8-5jr_* catch(IOException e) mG~y8nUtp { qE72(#:R* e.printStackTrace (); -HsBV>C } t4k'9Y:\Q <PN;D#2bh />[6uvy#Q return n; 4) iEj } ijqdZ+ &{/>Sv!6# G
r|@CZq } I=%sDn 4@e!D Du [T}]Ma*CS /* =+h!JgY/L **SiteInfoBean.java rgzI */ <M OL{jan package NetFox; IVzA>Vd j& o+KV tN3 {7'\7 public class SiteInfoBean { wmr%h q b2=Q~=Wc +Jka :]MW! private String sSiteURL; //Site's URL px>>]>ZMH private String sFilePath; //Saved File's Path U9o*6`"o private String sFileName; //Saved File's Name Hs}"A,V private int nSplitter; //Count of Splited Downloading File ]A]E)* 70
UgK E !(_xu{(DL public SiteInfoBean() K2rS[Kdfaq {//nSplitter的缺省值为5 z83:a)U //default value of nSplitter is 5 `VFl|o#H this("","","",5); ZU.)K>' } :ZfUjqRE ,N7l/6 ;vc lAsJ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) e~s7ggg2k { '+I
2$xE sSiteURL= sURL; K}=8:BaUL sFilePath = sPath; UVCMB_T sFileName = sName;
01c/;B this.nSplitter = nSpiltter; X_({};mz <SM&VOiaOz Mr NOcx& } lMzCDx!m N"x\YHp ms\/=96F public String getSSiteURL() ar
qLp| { y[WYH5&DJ return sSiteURL; D
,ZNh1xt } mYjiiql~ khN:+V| KvJP(!{ public void setSSiteURL(String value) )]b@eGNGj { K# i*9sM sSiteURL = value; _ K+V?-= } y5Wqu9C\Io 0"<;You %c&Ah public String getSFilePath() )|h;J4V { <,X+`m& return sFilePath; ?tC}M;~ } g.Caapy B
mBzOk^ /yw\(|T public void setSFilePath(String value) 8@W/43K8- { `^bvj]>l sFilePath = value; [OoH5dD } ;p#Z :6 -6~dJTm[t 1|EU5< public String getSFileName() p-yOiG8b} { a,57`Ks+n< return sFileName; >,"D9! } !!+/Wgd:6 [mB(GL rxgVT4 public void setSFileName(String value) [rUh;_b\D { ]k`Fl," sFileName = value; 4'{hI;&a& } 3^A/`8R7K ,F?~'-K 28Ssb| public int getNSplitter() ;x3 ]4^ { J<($L}T*$ return nSplitter; nhQ44qRgQ } AeY$.b %is,t<G W]!@Zlal public void setNSplitter(int nCount) l\sS? { 2 -p nSplitter = nCount; ycl>git] } ]EVe@ } o3i,B),K Xc9p;B>^Ts <(bCz>o| /* R%)2(\ **Utility.java RlslF9f */ j""y2c1 package NetFox; .,ppGc|* "doU.U&u o! 2n}C public class Utility { 3!"b
guE u_p7Mcb |`k1zc)9 public Utility() RvPniT(<? { 0[2BY]`Z. (ifqwl62 FD
XWFJ } E*r @tE&<[e //线程睡眠 Rg8m4x w public static void sleep(int nSecond) s}[A4`EWH { ;o_V!<$ try{ 43{_Y] Thread.sleep(nSecond); PQU3s$ } w;yiX<t< catch(Exception e) rF8W(E_= { }1a <{& e.printStackTrace (); ?`N57'iPb } l`v
+sV^1 } _>gXNS r4u '&.)T2Kw //日志 R8=I)I-8 public static void log(String sMsg) ?ae[dif { v9t47>V System.err.println(sMsg); ^)9MzD^_nV } "RV`L[(P*k }&Wp3EWw |8DH4*y! public static void log(int sMsg) Z^'?|qFj! { &J lpA<^s; System.err.println(sMsg); j.=UI-&m } |<j,Tr1[ } !"`@sd~ -~vl+L RjR&D?dc /* C@TN5?Z **TestMethod.java {[M0y*^64$ */ o~OwE7H)A package NetFox; z`emKFbv >%uAQiU :rz9M@7 public class TestMethod { 3~[`[4n^ p@?7^nIR*u Sk6b`W7$ public TestMethod() =_$XP { ///xx/weblogic60b2_win.exe H
Z;ZjC* try{ [+g( SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); ZdE>C //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); <ICZ"F`S SiteFileFetch fileFetch = new SiteFileFetch(bean); j!zA+hF( fileFetch.start();
_'!aj+{ } d] b~)!VW catch(Exception e){e.printStackTrace ();} Xt</ -` :r1;}hIA9 `ir&]jh.A } "rme~w Di 5kGxhD "C_T]%'Wm public static void main(String[] args) .ocx(_3G { =)(3Dp new TestMethod(); !1ML%}vvB, } E
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