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/* 9;uH}j8sE **SiteFileFetch.java eK5~gnv, */ "KS"[i!3j package NetFox; 7'65+c[& import java.io.*; :-<30LS$ import java.net.*; %`K{0b HmkxE x7G)^ public class SiteFileFetch extends Thread { w^^l, WNb2"W W(Md0* SiteInfoBean siteInfoBean = null; //文件信息Bean Vgkj4EE long[] nStartPos; //开始位置 +5I'? _{V long[] nEndPos; //结束位置 6v]`s FileSplitterFetch[] fileSplitterFetch; //子线程对象 dZ8ldpf8 long nFileLength; //文件长度 I Z*) boolean bFirst = true; //是否第一次取文件 (v
KJyk+Y boolean bStop = false; //停止标志 2hso6Oy/v{ File tmpFile; //文件下载的临时信息 o2bmsnXQ DataOutputStream output; //输出到文件的输出流 hO{&bY0 I$x<B7U //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 3Nwix_&S public SiteFileFetch(SiteInfoBean bean) throws IOException yB/F6/B~ { ;($xAAR siteInfoBean = bean; 9z{g3m70@ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); w1(5,~OB tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;&f(7 Q+T_ if(tmpFile.exists ()) S 1^t;{" { g.blDOmlc bFirst = false; KHx;r@{< read_nPos(); 1*$6u5.=F } :is2 &-|x else |uz\XK { ut]UU*g^$ nStartPos = new long[bean.getNSplitter()]; N!ay#V nEndPos = new long[bean.getNSplitter()]; ,UC|[-J } i `p1e5$ lj8ficANo W"pHR sf
W/u(9 } Nu3IYS5& T-GvPl9ZJw cTn(Tv9s public void run() VAjl?\}6 { qmGHuQVe //获得文件长度 AS:k&t //分割文件 . XbDb //实例FileSplitterFetch 8.^`~ta //启动FileSplitterFetch线程 N?#L{Yt //等待子线程返回 ]B8iQr-! try{ 8''1H<f if(bFirst) E BoC,{R# { mA%}ijR6y nFileLength = getFileSize(); wS?K c^2O if(nFileLength == -1) F
Pjc;zNA { (fr=[m$` System.err.println("File Length is not known!"); -^t.eZ*| } C`3XOth else if(nFileLength == -2) ^jdtp { \*BRFUAc System.err.println("File is not access!"); 8 $H\b &u } $!!y v'K else Pg`+Q^^6S { UY,u-E" for(int i=0;i<nStartPos.length;i++) bA$ElKT { ;14Q@yrZ0 nStartPos = (long)(i*(nFileLength/nStartPos.length)); fhRu- } (E 8jkc
for(int i=0;i<nEndPos.length-1;i++) Q%!xw( { 7<(U`9W/q nEndPos = nStartPos[i+1]; hH-!3S2' } H8B.c%_|U nEndPos[nEndPos.length-1] = nFileLength; p[%~d$JUq } dD'KP4Io@ } @"98u$5 C~K/yLCAi p`Tl)[* //启动子线程 Y#-c<o}f fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; BT;1"l< for(int i=0;i<nStartPos.length;i++) '43U v { <nV 3`L&] fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), mr_NArF siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), "Wk K1u nStartPos,nEndPos,i); 4AvIU!0w Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Z\QNn fileSplitterFetch.start(); 3m21n7F4* } /:BC<]s // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ;0$qT$, siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); )' ,dP)b // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", *!Gb_!98 nEndPos = " + nFileLength); CI \O)iB // fileSplitterFetch[nPos.length-1].start(); [xGL0Z%)t <; Td8O89_ tBwPB#:W //等待子线程结束 kDE:KV<"c //int count = 0; p&`I#6{ //是否结束while循环 2JeEmG9 boolean breakWhile = false; A] o3MoSt yTe25l{QaF YY7dw:>e/ while(!bStop) i1b3>H*3 { KM^}d$x}s write_nPos(); U}=H1f, Utility.sleep(500); sv "GX<+ breakWhile = true; (f#{<^ gd RJN
LcIm (V/!0Lj for(int i=0;i<nStartPos.length;i++) eB,@oo% { Tn38]UL if(!fileSplitterFetch.bDownOver) %F;uW[4r { SokU9n! breakWhile = false; 3rX8H`R break; `@:k*d } ,S, R6#3G } V|nJ%G\ if(breakWhile) xFp9H'j{ break; Pb@$RAU63 ;D[I/U vDc&m //count++; [{ A5BE - //if(count>4) q'biTn]2 // siteStop(); 1gYvp9Ma } :ZM=P3QZ ]tbl1=| }k8&T\V! System.err.println("文件下载结束!"); _.,"`U; H } ~%: TE} catch(Exception e){e.printStackTrace ();} +]VW[$W } 4%TmW/yd 2qKAO/_O ;b,
bHL //获得文件长度 'w\Gd7E public long getFileSize() gaL.5_1 { |q q29dS? int nFileLength = -1; {UhpN"'"n try{ 4&`d$K URL url = new URL(siteInfoBean.getSSiteURL()); {?IUf~< HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); bGB5]%v, httpConnection.setRequestProperty("User-Agent","NetFox"); uv7tbI"r W}\<}dK ]k.YG!$ int responseCode=httpConnection.getResponseCode(); E `%*lGu_ if(responseCode>=400) P$`k*
v { &=.7-iC|W processErrorCode(responseCode); m W4tW return -2; //-2 represent access is error 6~8dMy;w } k~$}&O }iB>3|\ Z2k5qs7g String sHeader; twPD'X!r TiI3<.a! l-[5Zl;" for(int i=1;;i++) @#5?tk0 { (G{2ec:? //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 3HX-lg`0 //Utility.log(in.readLine()); hXn@vK6 sHeader=httpConnection.getHeaderFieldKey(i); T@N)BfkB
if(sHeader!=null) Vjr}"K$Y { :HN\A4=kc( if(sHeader.equals("Content-Length")) [8`^_i=# { ery{>|k nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); #w)D ml break; xEe3,tb'e } 3:!5 ] } 0av2w5>af else z8w@pT break; Y2y =
P } BUEV+SZ4 } I%ZSh]On catch(IOException e){e.printStackTrace ();} M 0RVEhX catch(Exception e){e.printStackTrace ();} IeE6?!,) }cI _$ A4VVy~sd Utility.log(nFileLength); zLV k7u{e :}fIu?hCA "NO*(<C.R return nFileLength; eP|hxqM&9 } aw'o=/a8 bRc~e@
C6}`qD //保存下载信息(文件指针位置) T:EUI] private void write_nPos() yvKKE { s!K9-qZl< try{ K9euNa output = new DataOutputStream(new FileOutputStream(tmpFile)); (k5d.E]CK output.writeInt(nStartPos.length); 3VmF1w
2 for(int i=0;i<nStartPos.length;i++) 1?ST*b { SV_b(wP9 // output.writeLong(nPos); )'t&LWS~ output.writeLong(fileSplitterFetch.nStartPos); @?<1~/sfL output.writeLong(fileSplitterFetch.nEndPos); 7.1FRxS } ~C ;gEE- output.close(); EcmyY,w } Y>'t)PK catch(IOException e){e.printStackTrace ();} iJ~e8l0CA catch(Exception e){e.printStackTrace ();} Zk
9 i}H } x?-kt.M .&c!k1kH @RVj~J.A //读取保存的下载信息(文件指针位置) UNKXfe(X9 private void read_nPos() CK RnkTTiV { F%e5j9X` try{ P}bw Ej DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); tp=/f
!bv int nCount = input.readInt(); WEB enGQ nStartPos = new long[nCount]; Ng<oz*>U nEndPos = new long[nCount]; H}&4#CQ'! for(int i=0;i<nStartPos.length;i++) TY*q[AWG { &+F}$8, nStartPos = input.readLong(); \"hP*DJ" nEndPos = input.readLong(); r#'E;Yx } eWAgYe2 input.close(); *v9 {f? } 8AVG pL catch(IOException e){e.printStackTrace ();} :l?/]K catch(Exception e){e.printStackTrace ();} 5Lm<3:7Q+ } 3r,^is @
Yzj \I`g[nT| private void processErrorCode(int nErrorCode) e't1.%w { !mRDzr7 System.err.println("Error Code : " + nErrorCode); 3k?|-js } S.A|(?x !V;glx[ >>HC| //停止文件下载 cu$i8$?t public void siteStop() $79-)4;z4 { *Wz\FixP0 bStop = true; b R;Wf5 for(int i=0;i<nStartPos.length;i++) AwO'%+Bv fileSplitterFetch.splitterStop(); ,Taq~ ?{*/VJl$ b&Go'C{p } (J/!9NS: } K_E- Hgg_ //负责部分文件的抓取 7[u$!.4{* **FileSplitterFetch.java : yC|Q) */ WL/9r
*jW package NetFox; YO^iEI. W0>fu> Hg;; > import java.io.*; AIa#t#8${ import java.net.*; OLM}en_L 0] $5jW6] /N82h`\n public class FileSplitterFetch extends Thread { 2k3yf_N meNz0ve
`di/nv) String sURL; //File URL BY^5z<^. long nStartPos; //File Snippet Start Position O/2Jz long nEndPos; //File Snippet End Position p?zh4:\F+ int nThreadID; //Thread's ID C1KO]e > boolean bDownOver = false; //Downing is over -$m?ShDd boolean bStop = false; //Stop identical s.G6?1VXlY FileAccessI fileAccessI = null; //File Access interface jW!)5(B[A &SE+7HXw 5uufpvah public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException !2Q> { o|0QstSCl this.sURL = sURL; 9F"Q2^l' this.nStartPos = nStart; fKZgAISF this.nEndPos = nEnd; jIs2R3B nThreadID = id; y?s8UEC fileAccessI = new FileAccessI(sName,nStartPos);//定位 mjz<,s`D } '+{dr\nJ l]o)KM< PC}m.tE public void run() #yVMC;J?W { &BDdJwE while(nStartPos < nEndPos && !bStop) 2r|!:^'?W { wk"zpI7L k_<8SG+` #XlE_XD try{ `Gp!Y URL url = new URL(sURL); _C97G& HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); oPA
[vY httpConnection.setRequestProperty("User-Agent","NetFox"); fCxF3m(O String sProperty = "bytes="+nStartPos+"-"; !1\jD httpConnection.setRequestProperty("RANGE",sProperty); T{%'"mm; Utility.log(sProperty); az2CFd^M 8fwM)DKS .xp|w^ InputStream input = httpConnection.getInputStream(); Ew kZzVuX //logResponseHead(httpConnection); t846:Z%[ W=k%aB?p Ly$s0.! byte[] b = new byte[1024]; z.7'yJIP# int nRead; NJglONO while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) h8MkfHH7{ { TGJ\f nStartPos += fileAccessI.write(b,0,nRead); zUhJr$N$ //if(nThreadID == 1) ?~5J!|r# // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Xqac$%[3 } MYb^ILz H3 C8 b%r|^# HKdR?HM1 Utility.log("Thread " + nThreadID + " is over!"); !bHM:!6^ bDownOver = true; a~-^$Fzgy //nPos = fileAccessI.write (b,0,nRead); S3k>34_%9 } E |A,NPf%I catch(Exception e){e.printStackTrace ();} T?Dq2UW } CF`fn6 } tyLR_@i%% \#A=twp P00pSRQHD //打印回应的头信息 K{&b "Ba1 public void logResponseHead(HttpURLConnection con) 42m}c1R { /j1p^=ARV for(int i=1;;i++) CXsi { h8yv:}XU* String header=con.getHeaderFieldKey(i); .ZxH#l _ if(header!=null) 6GD Uo}. //responseHeaders.put(header,httpConnection.getHeaderField(header)); S0ct;CS Utility.log(header+" : "+con.getHeaderField(header)); Y{8L ~U: else %TJF+; break; YTco;5/ } ^<e"OV } o\luE{H
.? (qP !x 2j dIo|i,- public void splitterStop() nAp7X-t { 4D/mm(2d$ bStop = true; >)N}V'9 } Lz
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} O;A/(lPW+ ]rh)AE!Y( lE54RX}e4 /* ?ExfxR!~ **FileAccess.java \\D~Yg\# *//文件访问(定位,写) A*h)p@3t< package NetFox; [^gSWU import java.io.*; '7F`qL\/#( H\kqmPl& y^ C;?B< public class FileAccessI implements Serializable{ -BV&u( r[$Qtj Q //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 FVsNOU RandomAccessFile oSavedFile; z^4\?R50yO long nPos; _W:
S>ij( WPE@yI(
\~ public FileAccessI() throws IOException RU`TzD {
FFgy=F this("",0); Jz#ZDZkm } qi7wr\XNW |k'I?:' XEZ6%Q_ public FileAccessI(String sName,long nPos) throws IOException $Mx.8FC + { kmW!0hm;e oSavedFile = new RandomAccessFile(sName,"rw"); lb1(1|# this.nPos = nPos; \Mlj
7.u] oSavedFile.seek(nPos); U
gB } e7L;{+XI yh5KN_W Y@.> eS public synchronized int write(byte[] b,int nStart,int nLen) 9GZF39w u { d1j v>tu int n = -1; LM _4.J try{ &V( LeSI oSavedFile.write(b,nStart,nLen); wH#k~`M n = nLen; CSU> nIE0 } $zCUQthL@ catch(IOException e) $)@zlnU { HIhoYSwB e.printStackTrace (); %h%r6EB1F } Ro:-u7q S0=BfkHi. *OF7{^~& return n; 73xI8 } l}AB):<Z ^:-%tpB#! Gz *U?R-T } oS_p/$F, <R{\pz2w /gFyow1W /* 6}ax~wYct **SiteInfoBean.java uR"]w7= */ 0l_-
package NetFox; `bC_J,>_ u gfV' 5o~Z> public class SiteInfoBean { dbZPt~S'$ K0I-7/L )kUq2-r private String sSiteURL; //Site's URL ?qK:P private String sFilePath; //Saved File's Path `ZefSmb private String sFileName; //Saved File's Name FpRK^MEkG private int nSplitter; //Count of Splited Downloading File #3CA h V8A<VT Pq4sv`q)S public SiteInfoBean() SyYa_=En {//nSplitter的缺省值为5 _ve7Is`/ //default value of nSplitter is 5 \W@?revK this("","","",5); sox90o 7 } F37,u| <I|ryPU9{X jA]xpf6} public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) v5$zz w { -=qmYf sSiteURL= sURL; fCVSVn"o sFilePath = sPath; jN {ED_ sFileName = sName; b'{D4/ this.nSplitter = nSpiltter; YT:5J%" .HtDcGp 2C8M1^0:Z } $K
G?d>wx zR<jZwo]# v^E5'M[A public String getSSiteURL() oL6_Ya { 3> fuH'= return sSiteURL; ja>T nfu } [D?E\Nkk er<~dqZ}] (Pu*[STTT public void setSSiteURL(String value) /V*eAn8> { tIvtiN6[|l sSiteURL = value; 7PvuKAv?k } [wOO)FjT O>>8%=5Q yi%B5KF~Al public String getSFilePath() 7xd}J(l { &`%C'KZ return sFilePath; 7v:;`6Jb } %Mu dc {"y6l 4v?S`w:6 public void setSFilePath(String value) !kz\
{ { k4l72 'P sFilePath = value; [j/-(?+ } (nzzX?`nY D6m>>&E[' r:o!w7C:a public String getSFileName() \4&g5vE { oyd{}$71d return sFileName; m 8f_w } FPMW"~v fGfv{4R Av[jFk public void setSFileName(String value) C^~iz
in { ':[y]ep(~| sFileName = value; ](ninSX1w } :H87x?e[ := 8vy doa$
;=wg public int getNSplitter() j?,$*Fi { {%$=^XO return nSplitter; mU_O64 } 8L@di Y xphqgOc12, GQQ!3LwP\O public void setNSplitter(int nCount) ])JJ`Z8Bk { n-Xj> nSplitter = nCount; ~+g5?y } 5SjS~9 } M1i|qjb:l
e?7paJ prWid3} /* 'SY&-<t( **Utility.java g$tW9 Q */ BCj&z{5"7e package NetFox; ?b0\[ ,)RdXgCs 'K!kJ9oqe public class Utility { )>/c/B OwEz(pj@ G1l( public Utility() GB=q}@&8p { e'`oisJU?q Uwp
+w QJ/SP } +EB## bODl
q //线程睡眠 uu:)jx i public static void sleep(int nSecond) y{N9.H2 { p%s
D>1k try{ JjmL6(*ui Thread.sleep(nSecond); ymzm x$o= } YJy*OS_& catch(Exception e) HT&0i,` { zxh"@j$? e.printStackTrace (); =
` ^jz} } gr;M
} NR*SEbUU* >g[W@FhT'k //日志 QJ>>&`{, public static void log(String sMsg) a:fHTU=\p { =6sXZ"_Tw System.err.println(sMsg); s:ruCS } J-}NFWR;t r)t^qhn )~/U+,
public static void log(int sMsg) b>i=",i\ { nqBuC System.err.println(sMsg); /\#5\dHj } 8syo_sC | } @K9T )p] +@Y[i."^J +6=!ve} /* I?K0bs+6 **TestMethod.java cGp^;> ]M */ 0
OBkd package NetFox; ~K9U0ypH kslN_\ ;i9CQ0e? public class TestMethod { a3;.{6el)H V|AE~R^ 1 XG-O public TestMethod() MjpJAV/84 { ///xx/weblogic60b2_win.exe Ps7%:|K] try{ =CoT{LRQ_ SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 'm|m+K83 //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); z7q2+;L SiteFileFetch fileFetch = new SiteFileFetch(bean); (5> ibe fileFetch.start(); sYXS#;|M } >-P0wowL catch(Exception e){e.printStackTrace ();} GHy#D]Z 'T[zh#v>S kgz{m;R } sD8S2 ]lUu%<-; o(P:f)B public static void main(String[] args) RY{tX` { g1~I*!p new TestMethod(); hptuTBD } 9HX+sB
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