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/*
(Z?f eUxp **SiteFileFetch.java w`f66*@Q1 */ #@`c7SR package NetFox; 3?"gfw W import java.io.*; ov, import java.net.*; hp2E! C ma x,10o *qSvSY* public class SiteFileFetch extends Thread { zx=eqN@!@ m)pHCS l:eC+[_;> SiteInfoBean siteInfoBean = null; //文件信息Bean R(^Sse long[] nStartPos; //开始位置 ejkUNCKQt long[] nEndPos; //结束位置 /ZabY FileSplitterFetch[] fileSplitterFetch; //子线程对象 |g^YD;9s. long nFileLength; //文件长度 *kK +Nvt8s boolean bFirst = true; //是否第一次取文件 rCA!b"C2 boolean bStop = false; //停止标志 UsU
Ri File tmpFile; //文件下载的临时信息 9(S=0< DataOutputStream output; //输出到文件的输出流 ';Nc;9 JJWPte/ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) r`6f public SiteFileFetch(SiteInfoBean bean) throws IOException NdLe|L?c { R"O%##Ws siteInfoBean = bean; T$2A2gb` //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 0R\.G1f% tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); dazML|1ow if(tmpFile.exists ()) tyW[i8)O} { i_AD3Jrs bFirst = false; E`^D9:3:) read_nPos(); 45.g ; } ZZ^A&%E(a else `^8mGR>OpI { oz{X"jfu nStartPos = new long[bean.getNSplitter()]; Ar/P%$Zfq nEndPos = new long[bean.getNSplitter()]; LsIZeL^ } hkb\GcOj }DjVZ48 vqf}(/.D $+44US } [3-u7Fx! .Er+*j;&w XZ@+aG_%q public void run() P8dMfD*"E { H9TeMY //获得文件长度 <HRPloVKo //分割文件 CckfoJ 9 //实例FileSplitterFetch "OI$PLK //启动FileSplitterFetch线程 DPW^OgL; //等待子线程返回 mMZ{W+"[f try{ W9c&"T9JT if(bFirst) ,D`jlY-1l { X4hz\={ nFileLength = getFileSize(); [T7&)p if(nFileLength == -1) x<!]#**; { [&&#~gz System.err.println("File Length is not known!"); 2@Nd02v| } ~$4(|Fq/ else if(nFileLength == -2) UYZC% $5x { P(8Yz W System.err.println("File is not access!"); _7:Bxx4B } dPpQCxf else zB+e;x f | { B!quj!A for(int i=0;i<nStartPos.length;i++) 8(K:2 { {e2ZW] nStartPos = (long)(i*(nFileLength/nStartPos.length)); MNe/H\ } ZyNgG9JL] for(int i=0;i<nEndPos.length-1;i++) RF2I_4 { I(BJ1 8F$ nEndPos = nStartPos[i+1]; "u~` ZV( } H*<E5^#dw nEndPos[nEndPos.length-1] = nFileLength; ke W7pN? } 7)#JrpTj% } #| gh pd: YR; lj&\F|-i //启动子线程 r 56~s5A fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ~e[qh+ for(int i=0;i<nStartPos.length;i++) mpwh= { OzC%6;6h fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Gy["_;+xU siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), A~E S{Zkh nStartPos,nEndPos,i); FPK=Tr:b Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); o+}1M fileSplitterFetch.start(); hUvA;E(qD } g6DIWMoO=h // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), i}>EGmv m siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1 <T| // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", yCkc3s|DA; nEndPos = " + nFileLength); e&ZTRgYdi // fileSplitterFetch[nPos.length-1].start(); d<OdQvW. t6-fG/Kc ON!Fk:- //等待子线程结束 >HwVP.~HN //int count = 0; fYZd:3VdC //是否结束while循环 j<Pw0?~s6 boolean breakWhile = false; yF|yZ{ #!TlalV ~qL/P 5*+ while(!bStop) tNZZCdB { L5d
YTLY write_nPos(); [\Aws^fD_ Utility.sleep(500); l>i:M#z& breakWhile = true; 8?<J,zu@AV zJ1M$U c@]G;> o for(int i=0;i<nStartPos.length;i++) D2o|.e<r { XD!}uDZ^ if(!fileSplitterFetch.bDownOver) W95q1f#7 { 7}c[GC)F breakWhile = false; r0&LjH&R break; (C`nBiL< } {4[dHfIy } ^-~=U^2tC if(breakWhile) i,Jz7OX break; q:jv9eL.O wLO"[, 0$yHO2 f //count++; 6+s&%io4 //if(count>4) n@C#,v#^0 // siteStop(); NX;{L#lQ } Pq-@waH3 @LU[po1I ]5ibg"{S System.err.println("文件下载结束!"); q~AvxO } vu*{+YpH catch(Exception e){e.printStackTrace ();} 7n;a_Z0s$ } drwxrZt =''*'a-P Bz:Hp{7& //获得文件长度 d|UH AX public long getFileSize() ,gkWksl9 { b-c6.aKf| int nFileLength = -1; h"2^`
)!u try{ vj#m#1\f URL url = new URL(siteInfoBean.getSSiteURL()); \
sz ](X HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection ();
%>O}bdSf httpConnection.setRequestProperty("User-Agent","NetFox"); >E,/|K* NLgeBLB %hBw)3;l int responseCode=httpConnection.getResponseCode(); 9]{Ss$W3x if(responseCode>=400) 1&=2" { rX`fjS*C processErrorCode(responseCode); P=9sP:[f6 return -2; //-2 represent access is error F*:H&, } 9/#b1NGv geqx":gpx9 `I|Y7GoUO String sHeader; lL'K1%{+
\ LzB*d e5ww~%, for(int i=1;;i++) k5)IBO { QX(t@VP //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); un,W{*s8* //Utility.log(in.readLine()); hH?ke(&=f sHeader=httpConnection.getHeaderFieldKey(i); r9-)+R
J if(sHeader!=null) `E>o:tff { 9<Th: t|w if(sHeader.equals("Content-Length")) Y$3liDeL= { " M&zW& nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); {N-*eV9# break; :3}K$ } R*vfp?x } >4T7DMy else =D 5!Xq'| break; Zk gj_ } lg jY\? } iW?NxP catch(IOException e){e.printStackTrace ();} kf)s3I/`( catch(Exception e){e.printStackTrace ();} *b1NVN$ :\1vy5 _ F2=#\U$ Utility.log(nFileLength); 0@#d($'1?Z %U97{y _x7>d:C return nFileLength; _ 1\H{x } /Dk`? LkXF~ ??P>HVx //保存下载信息(文件指针位置) *>j4tA{b@v private void write_nPos() TrHUM4 { @ v}M\$N? try{ .-p?skm=a output = new DataOutputStream(new FileOutputStream(tmpFile)); j 2Jew output.writeInt(nStartPos.length); y;LZX-Z- for(int i=0;i<nStartPos.length;i++) ~eGtoEY { PF;`mdi-, // output.writeLong(nPos); W4AFa>h output.writeLong(fileSplitterFetch.nStartPos); YccD^w[`B output.writeLong(fileSplitterFetch.nEndPos); lN::veD } p:|p? output.close(); N5fMMi(O } 0OVxx>p/x catch(IOException e){e.printStackTrace ();} `ve5>aw0_Y catch(Exception e){e.printStackTrace ();} n11eJEtm } %|?PG i@5 MqswYK-s ()@+QE$ //读取保存的下载信息(文件指针位置) zDA;FKZPp private void read_nPos() ,W;2A0A?X { ^G(+sb[t try{ #c2JWDH1F DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); uTUkRqtD! int nCount = input.readInt(); N6S}u@{J~N nStartPos = new long[nCount]; ;KW}F| nEndPos = new long[nCount]; fYZ)5xnj for(int i=0;i<nStartPos.length;i++) km!jxs { <UO'&?G nStartPos = input.readLong(); +Tp>3Jh2 nEndPos = input.readLong(); \Ot,&Z k2 } p%y|w input.close(); \RyW#[( } A!!W\Jt catch(IOException e){e.printStackTrace ();} t[ ^68] catch(Exception e){e.printStackTrace ();} e?!A]2 } "zBYhZr FDO$(& D7b]
;Nf\ private void processErrorCode(int nErrorCode) Ja#ti y { o8ADAU" System.err.println("Error Code : " + nErrorCode); c27A)`
} ,Tc598D dJd(m&.|N wloQk(T<W //停止文件下载 xD<:'-ri> public void siteStop() '0>w_ge4 { ibskce{H bStop = true; JN-wToOF for(int i=0;i<nStartPos.length;i++) V,)bw fileSplitterFetch.splitterStop(); F2RU7o'f. :Sd
iG=t ?Dk&5d^d } x0_$,Tz@ } }*I:0"WH //负责部分文件的抓取 sKI{AHJ?X **FileSplitterFetch.java rXlJW]i */ W-+~r package NetFox; \>*B ril4*$e7^\ &]Q\@;]Aq import java.io.*; StJ&YYdD import java.net.*; \sZ!F&a~ U(cV#@Y A296f( public class FileSplitterFetch extends Thread { 4r'f/s8"# qkN{l88 B'Ll\<mq@ String sURL; //File URL c>%+y+b{ long nStartPos; //File Snippet Start Position V.*0k~ long nEndPos; //File Snippet End Position xr*hmp1 int nThreadID; //Thread's ID `Al( AT(p boolean bDownOver = false; //Downing is over 3jB5F0^r1 boolean bStop = false; //Stop identical k-&fPEjG FileAccessI fileAccessI = null; //File Access interface 2'zYrdem + 5:oW~
; IirXF?&t public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException yBwgLn { Td !7Rx
_ this.sURL = sURL; g~JN"ap this.nStartPos = nStart; syYe0~ this.nEndPos = nEnd; <k0$3&D nThreadID = id; s<t*g]0`/ fileAccessI = new FileAccessI(sName,nStartPos);//定位 9$pQ|e0tJ } ^%V^\DK El$yM.M" :NJ(QkTZv public void run() xM3T7PV9 { 3~7X2}qU while(nStartPos < nEndPos && !bStop) 7]w]i5 { 11s*C # D@5AI
]( ~al4`:rRx1 try{ Rh:edQ# URL url = new URL(sURL); <V-D HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); GDgq
4vfj httpConnection.setRequestProperty("User-Agent","NetFox"); dd +%d String sProperty = "bytes="+nStartPos+"-"; %\5d?; httpConnection.setRequestProperty("RANGE",sProperty); z+>FKAF Utility.log(sProperty); '7UW\KEB[} al9L+ruR ;-:Nw6 E InputStream input = httpConnection.getInputStream(); n -P)X<\ //logResponseHead(httpConnection); I$7#Z!P6| jU~
!*] 4PwjG;!K byte[] b = new byte[1024]; $y\\?
int nRead; ^x8yWbrE while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) tiI:yq0 { $d ]3ek/ nStartPos += fileAccessI.write(b,0,nRead); +5|wd6 //if(nThreadID == 1) J_]B,'
6 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); h#ogL-UU } 'w^Md Hp2ysU "Cz8nG Utility.log("Thread " + nThreadID + " is over!"); '+6SkZ bDownOver = true; 6tC0F= //nPos = fileAccessI.write (b,0,nRead); ai!zb2j!E } Hy _ ( catch(Exception e){e.printStackTrace ();} 8cV3VapF } Flrpk`4 } HB}!Lf#*P .""?k[f5Q $wgHaSni //打印回应的头信息 Sz.sX w; public void logResponseHead(HttpURLConnection con) |;XkU`G { uTgvMkO for(int i=1;;i++) MCBZq\c { Dp)5u@I String header=con.getHeaderFieldKey(i); o(=\FNe if(header!=null) %s}c#n)N //responseHeaders.put(header,httpConnection.getHeaderField(header)); %|&Wc pQR Utility.log(header+" : "+con.getHeaderField(header)); 9ZbT41 else .DzFtc break; W+v7OSd92 } ZK1H%&P=R } _O76Aw-@l Sm@T/+uG: n-/{H4\ public void splitterStop() cO]_5@#f'8 { $e
bx bStop = true; |yqL0x0\l } 'G6g
yO/K I\%a< S?ypka"L } '&XL|_Iq w}wABO }Zs
y&K /* '<}N`PS#N **FileAccess.java /i'dhiG *//文件访问(定位,写) `QpkD8 package NetFox; T$p!IRPt import java.io.*; kj$Ks2!W 0X.(BRI~6p LHQ$0LVt>T public class FileAccessI implements Serializable{ !'y9/ 2pKkg>/S //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 :gD=F &V RandomAccessFile oSavedFile; rb"J{^ long nPos; =;hz,+ it
Byw1/ us/}_r74N* public FileAccessI() throws IOException ULqFJ*nla { ljr?Z,R4 this("",0); %25GplMT } xL-]gwq .uo9VL< V 6DWYs> public FileAccessI(String sName,long nPos) throws IOException zSJSus { J>@T'# oSavedFile = new RandomAccessFile(sName,"rw"); )=~OP>7B this.nPos = nPos; c#-o@`Po oSavedFile.seek(nPos); v-
793pr } oGtz*AP% ~Ox !7Lp }Kt`du= public synchronized int write(byte[] b,int nStart,int nLen) -rn%ASye { QD2;JI2 int n = -1; ]0Y5 Z)3:z try{
O,a1?_m8 oSavedFile.write(b,nStart,nLen); -2o_ L? n = nLen; xaPaK- } [:CV5k~xc catch(IOException e) S2;u!f { 8)Z)pCN e.printStackTrace (); +D3w2C } bS1?I@ _Se0,Uns (uW$ch@2K return n; "!g}Q* } yi29+T7j4S UrMEL;@g n+'gVEBA } IqA'Vz,lL b.N$eJlQ& [}mx4i /* JZl"k **SiteInfoBean.java i9RAbt Q} */ ;2k!KW@ package NetFox; y7X2|$9z- 4X}.aZO&b ^\(<s public class SiteInfoBean { ;4%Co)Rw e+TSjm ^t2b`n60 private String sSiteURL; //Site's URL 6E)emFkQ private String sFilePath; //Saved File's Path TJO?BX_9 private String sFileName; //Saved File's Name GJ9'i-\*\ private int nSplitter; //Count of Splited Downloading File `K%f"by a'Vz|SG ?LwBF;Y public SiteInfoBean() H(QbH)S$6 {//nSplitter的缺省值为5 ^o LMgz //default value of nSplitter is 5 at
)m* this("","","",5); X21k7 Ls } B-1Kfc CVAX?c{ ZL7#44 public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) t+l{D#?a
{ b_&KL_vo{| sSiteURL= sURL; ] >4CBm$ sFilePath = sPath; Fd1t/B, sFileName = sName; |uIgZ|7[ this.nSplitter = nSpiltter; ,SF>$
. )Y](Mj!D EK%J%NY } ~_]i'ii8 3nbTK3, l:.q1UV public String getSSiteURL() Ai*+LSG { HOr.(gL! return sSiteURL; hU~up a<dD } 4}r.g0L h`@z61UI nw public void setSSiteURL(String value) wqasI@vyu { kZK1{ sSiteURL = value; )4;$;a1 } ?X'l&k> sLOkLz"x cl{kCSZo.z public String getSFilePath() Swxur+hfH { -%_v b6u return sFilePath; -\[&<o@/D } nkO4~p n.b_fkZNr sHPK8Wsg public void setSFilePath(String value) b^'>XT~1J& { (o2.*x sFilePath = value; d9.I83SS } w\}Q.$@ wu;^fL M!b-;{;' public String getSFileName() W5(.Hub} { m0,TH[HWGF return sFileName; ~(-df> } tpn.\z% KPxf q M(@wFg public void setSFileName(String value) Rebo.6rG { _X~xfmU sFileName = value; !a7YM4D } Fvr$K*u ^5Ob(FvU 4CK$W`V public int getNSplitter() A,;[9J2\& { m~`f0 return nSplitter; 4Jk[X>I~ } o<L=l Q _}l7f X_ (n public void setNSplitter(int nCount) jMP;$w { IQyw>_~] nSplitter = nCount; m/"}Y]n! } <.U(%`| } /&o<kY |5(un/-C 4p&YhV7j)o /* uX8G<7O^ **Utility.java }_h2:^n */ yhxZ^(I package NetFox; Gf<%bQE ;edt["Eu 7xfN}iHG public class Utility { zC WN,K` MmW]U24s %5Zhq> public Utility() R[!%d6jDE { B18?)LA nzl3<Ar 8M6Qn7{L } c#T0n !} x-HR [{C //线程睡眠 %!V =noo public static void sleep(int nSecond) T-.Bof(?w { ^dRgYi"(A try{ wQrD(Dv(yA Thread.sleep(nSecond); wiM-TFT~ } 7DB!s@"
catch(Exception e) Yzih-$g { VR vX^w0 e.printStackTrace (); vve[.Lud' } f= 33+8I } B0ZLGB f4+}k GJN //日志 d^G5Pq public static void log(String sMsg) =f=,YcRn+ { `E5vO1Pl System.err.println(sMsg); FSyeDC^@ } giu8EjzK 1fcyGZq OIrr'uNH public static void log(int sMsg) l~$Od jf { #yR@.&P System.err.println(sMsg); H
>1mi_1 } ~.TKzh'eB } Ku;8Mx{ <'92\O =d1i<iw?- /* k4BiH5\hA **TestMethod.java IjrjLp[z$ */ AGgL`sP package NetFox; .6y(ox|LL U66 zm9
3& ?KXgG'!! public class TestMethod {
o>ZlA3tv =f-.aq(G/ mx")cGGQ public TestMethod() nY=]KU { ///xx/weblogic60b2_win.exe a3(q;^v try{ H_+!. SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); Tp
fC //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); }Oh@`xTxt SiteFileFetch fileFetch = new SiteFileFetch(bean); TF;}NQ fileFetch.start(); '/K-i.8F } 7|$
H}$ catch(Exception e){e.printStackTrace ();} sp&)1?!M P1}Fn:Xe%7 Odj4) } 7d'gG[Z^^ <P)0Y u zFGZ;?i public static void main(String[] args) SBqx_4} { *<T,Fyc| new TestMethod(); K)8N8Js( } 8A3!XA } eWwI@ASaA 点击下载更多相关资料
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