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/* ~IPATG **SiteFileFetch.java L?P[{Ohh/ */ gz uWhQo package NetFox; "pcr-?L import java.io.*; :8hX kQ import java.net.*; b$pCp`/MT <0m^b#hdG >WJQxL4 public class SiteFileFetch extends Thread { }6 u)wF5 "vkM*HP r+6 DlT
a SiteInfoBean siteInfoBean = null; //文件信息Bean @3 + long[] nStartPos; //开始位置 69Z`mR long[] nEndPos; //结束位置 7l09 FileSplitterFetch[] fileSplitterFetch; //子线程对象 ^^24a_+2 long nFileLength; //文件长度 {zc*yV\ boolean bFirst = true; //是否第一次取文件 0F6@aQ\y3 boolean bStop = false; //停止标志 |Q@( <'8= File tmpFile; //文件下载的临时信息 \d:Uq5d)0 DataOutputStream output; //输出到文件的输出流 x_/l,4_ BeD>y@ it //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) Fi 7~JZZ public SiteFileFetch(SiteInfoBean bean) throws IOException R<hsG%BS(D { X+ybgB4( siteInfoBean = bean; cG 3tn&AXi //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); Lpnw(r9Y tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); }5z!FXB if(tmpFile.exists ()) "4T36b { s<:);-tL bFirst = false; 33a}M;vx read_nPos(); a@9W'/?igk } |mdf u= else 0R0_UvsXU { q$s)(D nStartPos = new long[bean.getNSplitter()]; \f VX<L nEndPos = new long[bean.getNSplitter()]; ^JY:$)4[" } /xr75|-8 `#r/L@QI KV'3\`v@LY .m%5Esx } ZEpu5` >* F#ZZv}p HCYy9 public void run() bP|-GCKM8 { \<y|[ //获得文件长度 Y{@foIZ //分割文件 pe). //实例FileSplitterFetch Xi+l 1xe //启动FileSplitterFetch线程 `r}a:w- //等待子线程返回 f'7/Wj try{ /Tw $}8 if(bFirst) *IF~ab2 { $RHw6*COG nFileLength = getFileSize(); V' i@N if(nFileLength == -1) <h<_''+ { !+YSc&R_fW System.err.println("File Length is not known!"); vDR>
Q&/K } p]toDy-} else if(nFileLength == -2) V1,~GpNx { |TJu|zv^ System.err.println("File is not access!"); j xq89x } P8w56 else C nD3%% { \[8uE,=| for(int i=0;i<nStartPos.length;i++) I8IH\5k { ;7JyL|2 nStartPos = (long)(i*(nFileLength/nStartPos.length)); s%m?Yh3 } |="Y3}a for(int i=0;i<nEndPos.length-1;i++) .\)ek[? { B <HD nEndPos = nStartPos[i+1]; {n<1uh9~$8 } \9sJ`,T? nEndPos[nEndPos.length-1] = nFileLength; xyXVWd[ } l~@ -oE } \!0~$?_)P n2["Ln mO 'k<~HQr //启动子线程 \TYH7wXDP fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; g`"_+x' for(int i=0;i<nStartPos.length;i++) mhs%8OTN { C
[8='i26 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ? fM_Y siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 7L]Y.7> nStartPos,nEndPos,i); [LbCG Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Ro2!$[P fileSplitterFetch.start(); )M56vyo } `#j;\ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), u1Wixjd| siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); :<1PCX2 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", =RlAOgJ nEndPos = " + nFileLength); gA2]kZg // fileSplitterFetch[nPos.length-1].start(); )S@TYzdAN 'm/`= QX j<w5xY
//等待子线程结束 _sCzee&uQ //int count = 0; mP_c-qD
| //是否结束while循环 iTCY $)J boolean breakWhile = false; P Qi= o'YK\L!p 8` WaUB% while(!bStop) 1t#|MH
?U_ { C33RXt$X write_nPos(); ZM57(D Utility.sleep(500); 0!1cHB/c breakWhile = true; 5hlS2fn N_VWA.JHt -e *(+ for(int i=0;i<nStartPos.length;i++) - KaU@t { LD}<| if(!fileSplitterFetch.bDownOver) ovvg"/>L { 7X .B breakWhile = false; ]; B`'Ia break; M-C>I;a } 5F1P|t# } zZPXI&, if(breakWhile) AUr~b3< 6 break; u#$sO;8s ]"\sd" Cs^'g' //count++; w?R#ly //if(count>4) aR%E"P-6l // siteStop(); QY1|:( } "^VPe[lA (;++a9GK !L@a;L System.err.println("文件下载结束!"); *1U"uJno } qtS+01o catch(Exception e){e.printStackTrace ();} HQ/ Q" } 2>kk6=<5' T2XLP l -6W]\v Z //获得文件长度 s{0c.M public long getFileSize() XILreATK@ { |'Ksy{lA int nFileLength = -1; nh/%0=S try{ _%PEv{H0. URL url = new URL(siteInfoBean.getSSiteURL()); TK Ec^ HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l3YS_WBSn httpConnection.setRequestProperty("User-Agent","NetFox"); OH` |aqN zj#8@gbh+ c7 O$< F int responseCode=httpConnection.getResponseCode(); #pWeMt' if(responseCode>=400) JP6+h>ft { cGv`% processErrorCode(responseCode); -Dr)+Y return -2; //-2 represent access is error aq.Lnbi/X } +^|=MK% Iv>4o~t 1&utf0TX6q String sHeader; .J2tm2]"EZ ~s)
`y2Y <USr$ for(int i=1;;i++) z_t%n<OvK { Q;2n //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); |@pn=wW //Utility.log(in.readLine()); [^\HP]*Q{ sHeader=httpConnection.getHeaderFieldKey(i); _4X3g%nXl if(sHeader!=null) -AM(- { !u=A9i! if(sHeader.equals("Content-Length")) Y
i`wj^ { aHSl_[ nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); b|u0a6 break; q,.@<s W } 42.y.LtZ } t ;bU#THM else <4D.H break; .2QZe8" } ~L=? F } ge$ p/ catch(IOException e){e.printStackTrace ();} k\}\>&Zqu catch(Exception e){e.printStackTrace ();} n4DKLAl ITBa ^P ^7V{nT@H3 Utility.log(nFileLength); M1e79p< I{uwT5QT- [Qn$i/`J return nFileLength; c7t . }
Aiqn6BX{ G!5~`v Tu}?Q.pKo //保存下载信息(文件指针位置) =g$>]AE private void write_nPos() }/.GB5Ej { 5<h:kZ"S^g try{ ]E}eM@xdD output = new DataOutputStream(new FileOutputStream(tmpFile)); "uG@gV output.writeInt(nStartPos.length); qnTW?c9Z5 for(int i=0;i<nStartPos.length;i++) lVo}DFZ { Ag0)> PD^ // output.writeLong(nPos); &Q[|FO;[ output.writeLong(fileSplitterFetch.nStartPos); *n2le7 output.writeLong(fileSplitterFetch.nEndPos); ~zL DLr= } 75*q^ui output.close(); # 4;(^`? } i'uSu8$'* catch(IOException e){e.printStackTrace ();} vALH!Kh catch(Exception e){e.printStackTrace ();} L31#v$;4 } x\'95qU #A9rI;"XI ]O+W+h{] //读取保存的下载信息(文件指针位置) EOzw&M];r private void read_nPos() 2#xz,RM. { xA]}/* try{ O
<"\G!y~ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); |,WP) int nCount = input.readInt(); ,*d<hBGbh nStartPos = new long[nCount]; {*AYhZ nEndPos = new long[nCount]; j5bp)U for(int i=0;i<nStartPos.length;i++) "|<U`3y6 { \'-E[xNcWI nStartPos = input.readLong(); V8"m_ nEndPos = input.readLong(); 5PPaR|c3 } 2rG$.cGN" input.close(); X.J$
5b } t-VU&.Y catch(IOException e){e.printStackTrace ();} whh#J
( catch(Exception e){e.printStackTrace ();} @Avve8S } &a?k1R> GVUZn// T1g3`7C3 private void processErrorCode(int nErrorCode) lkaWwjv_D { UA(&_-C\ System.err.println("Error Code : " + nErrorCode); F`RPXY`ux } LV`tnt's 4s7&*dJ s1%th"e
[ //停止文件下载 O("13cU public void siteStop() /DoSU>%hK { 91ndr@*| bStop = true; c^x5 E`{ for(int i=0;i<nStartPos.length;i++) @"O|[%7e fileSplitterFetch.splitterStop(); gfly?)V nF ] Wx?k7T ytyB:# J } ],l\HHQ }
} @4by< //负责部分文件的抓取 Oe"nNvu/ **FileSplitterFetch.java (svKq(X */ H_d^Xk QZ package NetFox; Rh#QPYPq M992XXd ZXC_kmBN/ import java.io.*; k8E{pc6; import java.net.*; hK 1 H'~c Tga%-xr+ w,eW?b
public class FileSplitterFetch extends Thread { BKk+<#Ti s%i
\z }/ ,j e String sURL; //File URL LW!>_~g- long nStartPos; //File Snippet Start Position %abc-q long nEndPos; //File Snippet End Position v?(z4oOD/> int nThreadID; //Thread's ID (DY&{vudF boolean bDownOver = false; //Downing is over ]\(Ho
boolean bStop = false; //Stop identical \/F*JPhy FileAccessI fileAccessI = null; //File Access interface XWag+K L*(`ccU ^"] ]rZ) public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException yyM`J7]J { Fuy"JmeR
this.sURL = sURL; $nr=4'yZ this.nStartPos = nStart; j] J-#J this.nEndPos = nEnd; m"GgaH3, nThreadID = id; tui5?\ fileAccessI = new FileAccessI(sName,nStartPos);//定位 Hd57Iw } L'u*WHj|v ,Rdw]O
!24PJ\~I public void run() o^v]d7I8b { Nj=0bg"Qg5 while(nStartPos < nEndPos && !bStop) z^u*e { p9![8VU cyBm,! K@tEL Yb try{ -S7i': URL url = new URL(sURL); KpC!C9 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Of
m0{c= httpConnection.setRequestProperty("User-Agent","NetFox"); @ )Nw>/;o String sProperty = "bytes="+nStartPos+"-"; `wKd##v'@ httpConnection.setRequestProperty("RANGE",sProperty); 6o&ZS @ Utility.log(sProperty); `APeS=<
& cy0j>-z VWrb`p@ InputStream input = httpConnection.getInputStream(); mv>-XJ+ //logResponseHead(httpConnection); <RuLIu {'sp8:$a %\T#Ik~3 byte[] b = new byte[1024]; 5O[\gd- int nRead; #@L5yy2 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 1|:'jK#gE { ~(\.j=x nStartPos += fileAccessI.write(b,0,nRead); B["jndyr //if(nThreadID == 1) ca<OG;R^ // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 'Lh nl3 } 6'Q*SO;1gh lQ&J2H<w &Gs/#2XQ Utility.log("Thread " + nThreadID + " is over!"); ~rlPS#]o bDownOver = true; !GnwE //nPos = fileAccessI.write (b,0,nRead); 1>L8EImx]V } Dg*'n catch(Exception e){e.printStackTrace ();} QYc/f"9 } W:hTRq } 2`J#)f| lUd4`r" [*1:?mD$ //打印回应的头信息 M)3'\x: public void logResponseHead(HttpURLConnection con) `#4q7v~>oe { 'm0_pM1:D for(int i=1;;i++) y+h/jEbM</ { Yf_/c*t\5 String header=con.getHeaderFieldKey(i); -J>f,zA if(header!=null) p^ ONJL //responseHeaders.put(header,httpConnection.getHeaderField(header)); o_a' <7\#i Utility.log(header+" : "+con.getHeaderField(header)); |k#EYf#Y else pgPm0+N
break; S
9|^VU } MavidkS
} \%_sL#? b%7zu}F N?IdaVLj public void splitterStop() wRg[Mu,Q5 { ^O<@I bStop = true; iy|;xBI, } eOahr:Db 1BSn#Dnj Vi#[kn' } wb ^>/ 6Ev+!!znu 5xQ5)B4k /* WO$8j2!~# **FileAccess.java F`>qg2wO *//文件访问(定位,写) ?}HZJ@:lB package NetFox; G"ixw import java.io.*; #'.
' |z q8MyEoc:n \+Y5b} public class FileAccessI implements Serializable{ <?h(Dchq 1n[wk'}qf4 //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 a:s$[+'Y RandomAccessFile oSavedFile; @6*eS+t\ long nPos; 3zv0Nwb, *;T'=u_lR f# -\*
public FileAccessI() throws IOException B<ZCuVWH: { D;z!C
ys this("",0); 9{0%M } u qA!#E zXk^ugFy / 2MhP=, public FileAccessI(String sName,long nPos) throws IOException WBR# Ux { #<G:& oSavedFile = new RandomAccessFile(sName,"rw"); ,{_56j^d, this.nPos = nPos; -`$J& YU oSavedFile.seek(nPos); }!"Cvu } 89t"2|9 u /Mj|Px% 2fXwJG' public synchronized int write(byte[] b,int nStart,int nLen) 8!
/ue.T { {\X$vaF int n = -1; TN<"X :x9 try{ 0^)~p{Zh oSavedFile.write(b,nStart,nLen); Jl|^^? n = nLen; G?!8T91; } *+(eH#_2/ catch(IOException e) .g94|P { _#we1m e.printStackTrace (); S5r.so } [E/. r{S eN`G2eE v1/Y0 return n; i=&]%T6Qk } )1 QOA 9A87vs4[ /S @iF } r.c:QY$ ;p87^: x6ayFq= /* k1SD{BL **SiteInfoBean.java ?)Je%H */ 7>F [7_ package NetFox; .3#Xjhebvu ) )t]5Ys%; %'VzN3Q5V public class SiteInfoBean { J&B5Ll
I9xkqj ?!.J0q private String sSiteURL; //Site's URL bdEIvf7 private String sFilePath; //Saved File's Path lq a~ZF* private String sFileName; //Saved File's Name yqR]9"a private int nSplitter; //Count of Splited Downloading File mQ9shdvt- 'T7Y5X80$j <9c{Kt.5( public SiteInfoBean() wk'&n^_br {//nSplitter的缺省值为5 d.
ZfK //default value of nSplitter is 5 L-zU%`1{M this("","","",5); $LcMG,8%_ } b1G6'~U - '&$zgK9T? 9W-1P}e, public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 8"p rWAN { |:,`dQfw sSiteURL= sURL; 1H-~+lf sFilePath = sPath; N#@v`S sFileName = sName; '8FHn~F this.nSplitter = nSpiltter; .v-2A);I r]]:/pw?t BK
wo2=m~ } s'OK])>` L(9AcP (*,R21<% public String getSSiteURL() e_g&L) { GkI{7GD:z return sSiteURL; s(e1kk}" } =#A/d`2
b @Kw&XK e` D *IeG>% public void setSSiteURL(String value) L+eK)Q { @ZrNV*&< sSiteURL = value; |C5{[ z } JY,oXA6O FlY"OU* 2fNNdxdbT public String getSFilePath() HrMbp { ly6dl return sFilePath; [Dmf.PUe } fwh/#V-i R<%{I) F&B E+b/# public void setSFilePath(String value) m=Mk@xfQ# { y=jZ8+M sFilePath = value; =@q,/FR- } UMT}2d% B\l 0kiNT zMM~4?4 public String getSFileName() .u`A4;;Gw { {xOzxLB; return sFileName; }SyK)W5Y } i6y=3k e@S\7Ks q8,,[R_ public void setSFileName(String value) k~F,n {
*I}_g4 sFileName = value; hS>=pO+y }
Qstd;qE~ ln":j?` M(uJ'Ud/! public int getNSplitter() 73_-7'^mQ { ;e9&WEG_\ return nSplitter; 0-57_";%Q } zQUNvPYM P"Z1K5>2L g@pK9R%wH< public void setNSplitter(int nCount) 2=%]Ax"R { fhNJB0 nSplitter = nCount; !89hO4 0r } gvL*]U7 } -KfMKN~ Og8%SnEpMI JXR]G /* 1/6}E]-F **Utility.java DF-.|-^9I */ B}K<L\S package NetFox; J,s:CBCGL FMzG6nrdBN " BLJh)i public class Utility { NbCIL8f] P
m&^rC; 5H|7DVG public Utility() =WEDQ\ c { ` .]oH1\ nT(AO-Ue^ I1s$\NZ~] } lhf5[Rp l)'*jZ //线程睡眠 QIJ/'72 public static void sleep(int nSecond) i [Wxu M { {XD':2E try{ D=Yr/qc? Thread.sleep(nSecond); rV?@Kgxi } +8"P*z, catch(Exception e) bQPO'S4 { (m=1yj9 e.printStackTrace (); -rT#Wi } 2^nws } ][YuJUK8 Der'45]*^ //日志 mX?t|:[b public static void log(String sMsg) tx Qr|\4k { B(O6qWsL System.err.println(sMsg); x5rLGt } 4Y4zBD=< @RL'pKab9 -8dz`o} public static void log(int sMsg) +rhBC
V { K}GRU) System.err.println(sMsg);
AsvH@\\ } AVfF<E/ } F
IB)cpo Y]5MM:mI `)MKCw$e /* fvV"H{V, **TestMethod.java >;VZB/d */ uyWw3> package NetFox; rhly.f7N=A {+3g*s/HI (.L?sDQ</z public class TestMethod { ] ;CJ6gM~ _A0X[}^K MD3iWgM public TestMethod() c6y>]8_ { ///xx/weblogic60b2_win.exe `O;4b#!g try{ 5g$>J)Ry SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); %az6\"n //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); xO,;4uE SiteFileFetch fileFetch = new SiteFileFetch(bean); mZuLwd$0 fileFetch.start(); e"*ho[ } Pv3G?u=4 catch(Exception e){e.printStackTrace ();} Lw1[)Vk}E (Jk[%_b>_ 8#o2 qQ2+ } [,MK)7DU 6':Egh[; pF8+<
T3y public static void main(String[] args) N.ZuSkRM { 2"%f:?xV{ new TestMethod();
/<%L& } SZ7; }
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