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/* #|XEBOmsQ **SiteFileFetch.java MatC2-aV1 */ ~rCnST package NetFox; RQ,(?I*8\ import java.io.*; ?<frU ,{ import java.net.*; savz>E& UKK}$B 29ft!R>[ public class SiteFileFetch extends Thread { [/uKo13 GIVs)~/Eq W? UCo6<m SiteInfoBean siteInfoBean = null; //文件信息Bean s*CKFEb# long[] nStartPos; //开始位置 e+R.0E long[] nEndPos; //结束位置 <vt^=QA' FileSplitterFetch[] fileSplitterFetch; //子线程对象 Ql*/{#$ long nFileLength; //文件长度 \wRr6-!_ boolean bFirst = true; //是否第一次取文件 g&0GO:F` boolean bStop = false; //停止标志 Sw1]]-Es File tmpFile; //文件下载的临时信息 x}x@_w DataOutputStream output; //输出到文件的输出流 2Bjp{)* deTbvl //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) aJ)5 DlfLR public SiteFileFetch(SiteInfoBean bean) throws IOException T4!]^_t^ { 4\ OELU siteInfoBean = bean; y]jh*KD[ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 6vaxp|D tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 3sZK[Y|ax if(tmpFile.exists ()) jATU b- { J#x91Jh bFirst = false; \[oHt:$do read_nPos(); O[L8(+Sn } BWPYHWW}E else j=AJs< { G>RYQ{O nStartPos = new long[bean.getNSplitter()]; \7j)^ nEndPos = new long[bean.getNSplitter()]; Awh"SUOh0 } \~)573' Ez$5wY^J t!u*6W|@ :9h8q"T } |Gf{ } {PVu3W 9bNIaC*M public void run() j d81E { ~Op1NE //获得文件长度 ]s -6GT //分割文件 8Cqs@<r4Od //实例FileSplitterFetch l46F3C| //启动FileSplitterFetch线程 OX`n`+^D //等待子线程返回 Td F< try{ /<
:;^B if(bFirst) \;6F-0 { piG1&* nFileLength = getFileSize(); 1wgu%$|d if(nFileLength == -1) xK r,XZu { % *G)*n System.err.println("File Length is not known!"); ~?&ijhZ } 9A_7:V]_ else if(nFileLength == -2) 3-R3Qlr { .;:xx~G_Q System.err.println("File is not access!"); W$JA4O>b } 'JMa2/7CG else V3o AZ34) { ?W
n(ciO for(int i=0;i<nStartPos.length;i++) 5 q , { /(V=Um^0 nStartPos = (long)(i*(nFileLength/nStartPos.length));
2 QmUg } 8[C6LG for(int i=0;i<nEndPos.length-1;i++) AVr!e
{ DOerSh_0W nEndPos = nStartPos[i+1]; h2%:;phH } [j?<9 nEndPos[nEndPos.length-1] = nFileLength; JLu0;XVK } 4iz&"~&1 } %jxuH+L
m=MT`-: B0i}Y-Z //启动子线程 zcKC5vqb fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; w4'K2 7 for(int i=0;i<nStartPos.length;i++) <dL04F { hzLGmWN2j8 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), hPxI&
:N siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), \=7=>x_ nStartPos,nEndPos,i); @S7=6RKa[ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); l~YNmmv _ fileSplitterFetch.start(); n:'BN([]o } 8 uxFXQ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ({KAh? siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); E ZKz-} // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", d;SRK @ nEndPos = " + nFileLength); Q)BoWd // fileSplitterFetch[nPos.length-1].start(); Noxz kpMF q"D
L6 >j {H;|G0tR //等待子线程结束 "IG$VjgcB //int count = 0;
hu(K!>{ //是否结束while循环 -Y=c g; boolean breakWhile = false; $Q?G*@y XOg(k(&T !*Z)[[ while(!bStop) R%_H\-wo { k^5Rf write_nPos(); 7(8 Utility.sleep(500); = )l: ^+q breakWhile = true; 'Y{ux> 'eDgeWt/CQ ICbdKgLz for(int i=0;i<nStartPos.length;i++) ?VZXJO{^ { R}X_2"" if(!fileSplitterFetch.bDownOver) E'S;4B5? { Xb@z7X#O! breakWhile = false; fyq]M_5 break; p:<gFZb } w+9C/U;|s } R^M (fC if(breakWhile) D2%G.z break; mz$Wo *FB Qv0>Pf H"GE\ //count++; e4YfTr //if(count>4) ZYR,8 y // siteStop(); Y0X94k.u } JeTrMa 2 $F@L$&~ J%f=A1Q System.err.println("文件下载结束!"); =PKt09b^ } MZMS?}.2 catch(Exception e){e.printStackTrace ();} BRU9LS } [+MH[1Vr={ OwiWnS< $Y 4ch ko //获得文件长度 @@{_[ir public long getFileSize() ~?`9i>3W~ { `YmI' int nFileLength = -1; ksOANLRN try{ K!-&Zv URL url = new URL(siteInfoBean.getSSiteURL()); wO_pcNYZ8 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 8A8xY446) httpConnection.setRequestProperty("User-Agent","NetFox"); 3
!> L? HDSA]{:sl h*\TCl) int responseCode=httpConnection.getResponseCode(); ^{fi^lL= if(responseCode>=400) K+7yUF8XP { 7<QYT+6xV processErrorCode(responseCode); {b-0_ return -2; //-2 represent access is error n$m]58w } >xU72l#5 ,Og[[0g ~E3SC@KL String sHeader; ~aqT~TL_ :@QK}qFP VM<oUKh_3 for(int i=1;;i++) ?HEtrX,q { STXqq[+Rf //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); FU]8.)`G //Utility.log(in.readLine()); 8tT&BmT sHeader=httpConnection.getHeaderFieldKey(i); ~.4W,QLuD if(sHeader!=null) <i:*p1#Bm { *@ <8&M9x if(sHeader.equals("Content-Length")) >ggk>s| { U+9-li nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); {m_A1D/_ break; "LP,
TC } @Hspg^ } 8u:v:>D.' else VW{aUgajO break; "o^bN 9= } ^Hz } WIEx
'{ catch(IOException e){e.printStackTrace ();} L)kb (TH catch(Exception e){e.printStackTrace ();} Rm,[D)D^0N #RR:3ZPZC XI@6a9Uk Utility.log(nFileLength); w&wA >q>& F.~n pPi YPfs return nFileLength; 629~Uc6] }
^MWEfPt r3+<r<gs Gsds!z$ //保存下载信息(文件指针位置) cW81 private void write_nPos() G8^0^@o { b"ol\&1
#
try{ pY{; Yn&t output = new DataOutputStream(new FileOutputStream(tmpFile)); ?r
-\%_J_( output.writeInt(nStartPos.length); '2Q.~6 for(int i=0;i<nStartPos.length;i++) KXoL,)Hl { qy7hkq.uX // output.writeLong(nPos); Tm%$J output.writeLong(fileSplitterFetch.nStartPos); Y=P9:unG output.writeLong(fileSplitterFetch.nEndPos); JYZ2k=zh } k%EWkM)? output.close(); cPA~eZbX } s"I-YFP%c catch(IOException e){e.printStackTrace ();} MuDFdbtR catch(Exception e){e.printStackTrace ();} ]^iFqQe } c8^+^.=pX A5CdLwk MxM](ew~7 //读取保存的下载信息(文件指针位置) /~H[= Pf private void read_nPos() BKa A=Bl { ?ada>"~GR_ try{ 3c01uObTL DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); . o-0aBG int nCount = input.readInt(); 7!O^;]+, nStartPos = new long[nCount]; >]>0KQfO nEndPos = new long[nCount]; *hv=~A
$q for(int i=0;i<nStartPos.length;i++) E)KB@f<g* { I["F+kt^^ nStartPos = input.readLong(); Cr'
!"F nEndPos = input.readLong(); Dl0/-=L } j`>?"1e@x input.close(); Ty`-r5 } fm3(70F\ catch(IOException e){e.printStackTrace ();} {F;,7Kn+l catch(Exception e){e.printStackTrace ();} P#AAOSlLV } hNH.G(l0 T&?w"T2y @)9REA(U private void processErrorCode(int nErrorCode) RxlszyE { /0Z|+L9Jo System.err.println("Error Code : " + nErrorCode); q $t&|{ } U5|B9%:& A;odVaH7 }16&1@8 //停止文件下载 A|2 <A
! public void siteStop() VMaS;)0f@ { +c-6#7hh bStop = true; \|v `l{ for(int i=0;i<nStartPos.length;i++) 2K3MAd{ fileSplitterFetch.splitterStop(); YkSuwx@5_q )V=0IZi 1#/6r : } [ }{w } tJff+n> //负责部分文件的抓取 :aHcPc: **FileSplitterFetch.java `+oV/:Q3 */ q5%2WM]6 package NetFox; ])eOa% *U
M!( f(!E!\&n^ import java.io.*; pQqbZ3] import java.net.*; =D{B}=D\IM 8Bj4_!g l`DtiJ?$$0 public class FileSplitterFetch extends Thread { \$j^_C> mU>&ql?e ~
W@X- String sURL; //File URL i^R{Ul[ long nStartPos; //File Snippet Start Position JwjI{,jY long nEndPos; //File Snippet End Position \WcB9 int nThreadID; //Thread's ID kQy&I3 boolean bDownOver = false; //Downing is over }X.>4\B5 boolean bStop = false; //Stop identical 6eM6[ FileAccessI fileAccessI = null; //File Access interface #$FY+` b"Zq0M0l 8qN"3 Et public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException te)n{K", { '[Xl>Z[ this.sURL = sURL; 0potz]} this.nStartPos = nStart; V`[P4k+b this.nEndPos = nEnd; |gW
nThreadID = id; (|dPeix| fileAccessI = new FileAccessI(sName,nStartPos);//定位 <~N%W#z/ } Vg{Zv4+t p!}ZdX[u mW~P!7] public void run() U_l7CCK + { pr$~8e=c while(nStartPos < nEndPos && !bStop) D;jK/2 { :&9TW]*g Ge^Qar @ ICbKg: try{ f|#8qiUS URL url = new URL(sURL); Fom>'g* HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ]rnXNn; httpConnection.setRequestProperty("User-Agent","NetFox"); I(n }<)eF String sProperty = "bytes="+nStartPos+"-"; p-,Iio+ httpConnection.setRequestProperty("RANGE",sProperty); S.W^7Ap Utility.log(sProperty); mL$f[ v77fQ0w3 ZjS(ad*.2 InputStream input = httpConnection.getInputStream(); srK53vKMHW //logResponseHead(httpConnection); 'y.JcS!| ab@=cL~^ wd wp9 r byte[] b = new byte[1024]; L7}i
q0 int nRead; LQqfi
~ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) =T4u":#N; { tFiR!f) nStartPos += fileAccessI.write(b,0,nRead); 3{e'YD~hP //if(nThreadID == 1) iX%n0i // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [x5mPjgw } w4,]2Ccn. /&(1JqzlB e #M iaX Utility.log("Thread " + nThreadID + " is over!"); J(e7{aRJ9 bDownOver = true; iDw.i"b //nPos = fileAccessI.write (b,0,nRead); &\^rQi/tf } U-g9C. catch(Exception e){e.printStackTrace ();} Xu6K%]i^ } 036[96t,F } t8/%Dgu yj
zK.dM ~RInN+N# //打印回应的头信息 @VK6JjIq public void logResponseHead(HttpURLConnection con) VoM6 { "r. . for(int i=1;;i++) OJpj}R { LG&5VxT=,< String header=con.getHeaderFieldKey(i); |` "? if(header!=null) 2m" _z //responseHeaders.put(header,httpConnection.getHeaderField(header)); \ha-"Aqze3 Utility.log(header+" : "+con.getHeaderField(header)); )7Ixz1I9g else W5Zqgsy($F break; Xa,\EEmQ } Kam]Mn' } Q'K$L9q Ly>OLI0x_ j5^-.sEEw public void splitterStop() b#a@rh { :Q7mV%% bStop = true; X;VQEDMPU } OH6n^WKY .6m_>Y6 f{ ^:3"i } iSiDSeW8
%w5[*V J +q|$K6 /* YeyGN **FileAccess.java mmP U
*//文件访问(定位,写) Pl78fs"L@ package NetFox; ]?&FOzN5$P import java.io.*; D:JS)+] 9i%9
10O$'` public class FileAccessI implements Serializable{ V LdB_r3lQ BQ#L+9% //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @Y-TOCadT RandomAccessFile oSavedFile; :=fvZA WD long nPos; @;Y~frT c1%rV`)] Yb:pAzw6 public FileAccessI() throws IOException %|+E48 { ST;t,
D: this("",0); 0m)&YFZ[( } Ik~1:D]f v}[dnG _^\$"nw public FileAccessI(String sName,long nPos) throws IOException #/
"+ { |vu>;*K oSavedFile = new RandomAccessFile(sName,"rw"); cdTsRS;E this.nPos = nPos; Tlodn7%", oSavedFile.seek(nPos); yPgmg@G@/ } fn}UBzED\ jd:B \%#![ r;gP}H ? public synchronized int write(byte[] b,int nStart,int nLen) L
CSeOR { *#&*`iJ( int n = -1; e@n!x}t8 try{ I1"MPx{ oSavedFile.write(b,nStart,nLen); J|~26lG n = nLen; 2]WE({P } -]S.<8<$ catch(IOException e) i::\Z$L";i { ,1UZv>}S e.printStackTrace (); ;[$n=VX` } ^^Jnv{) Y(6Sp'0 $_X|,v9 return n; \a|L/9% } uT_!'l$fr %fjuG %0-wpuHc(] } R,_d1^|*w 5#2F1NX - u3e5gW /* -1r2 K **SiteInfoBean.java Qt+:4{He */ ,/,9j{|"j package NetFox; #kmh:P #exss=as/ {}Ejt:rKN public class SiteInfoBean { [=%YV# O l!~
mxUb lWZuXb,G private String sSiteURL; //Site's URL \wav?;z private String sFilePath; //Saved File's Path =XY]x private String sFileName; //Saved File's Name (lH,JX`$a private int nSplitter; //Count of Splited Downloading File 8v92Ng7 k#JQxLy# |M~ON= public SiteInfoBean() vS?odqi#n {//nSplitter的缺省值为5 "$^0%- //default value of nSplitter is 5 &%C4Ugo this("","","",5); 2 WBq } -$a>f4] ljJ>;g+ ; y.E! public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) sd0r'jb { ,"?A2n-qO sSiteURL= sURL; S"2qJ!.u sFilePath = sPath; ^ @=^;nB sFileName = sName; )NW6?Pu" this.nSplitter = nSpiltter; pBJAaCGm #gbH^a' m}Y0xV9 } e$/B_o7( &eZfQ27$ L2z2}U=< public String getSSiteURL() tpf7_YP_!- { Zm TDQ`Ix return sSiteURL; hkL5HzWn } I4_d[O9 i76 Yo5 pK&I^r public void setSSiteURL(String value) @ GDX7TPV { _7)F
? sSiteURL = value; 12`_;[37 } m~l
F`? L\aBc} xK%= public String getSFilePath() y9HK | { Cpl;vQ return sFilePath; ]o/|na* } 83ipf"]* fZWGn6$ ||B;o- public void setSFilePath(String value) Yx d X#3 { 3tS~:6-/ sFilePath = value; W0`Gc
{ } ]dPZ .r hZ\+FOx; )h$NS2B` public String getSFileName() QDmYSY$ { 0Fr1Ku! return sFileName; rnm03 '{ } irBDGT~ I*[tMzE Z'v-F^ public void setSFileName(String value) Ju` [m { Z+:D)L sFileName = value; K`:=]Z8 } 2s ,8R QP I+y8N= 4jmK]. public int getNSplitter() )|#%Czd4 { rJfqA@ return nSplitter; ``Q2P% } b
B %,*$D}H d4^`}6@ public void setNSplitter(int nCount) vFmJ;J { ?h\mk0[ nSplitter = nCount; x<(b|2qf } zri}
h/{ } PFSLyV* h+7># *DH *=F(KZ /* qB6dFl\ ( **Utility.java cSP*f0n,eo */ !3&kQpF package NetFox; FpV`#6i7 L-i>R:N4 c$E)P$<j public class Utility { >O9sk VkmRh,T iAO5"(>}? public Utility() %"3 )TN4 { G&{HTYP 3SG?W_
~XM[>M\qB } Q'NmSX)0 |(IO=V4P //线程睡眠 %FkLQ+v/< public static void sleep(int nSecond) ReB7vpd { JMV50 y try{ Jn}n*t3 Thread.sleep(nSecond); (yrh=6=z } |WQ9a' ' catch(Exception e) Qc-(*} { o=+Z.-q e.printStackTrace (); |WqOk~)[Z3 } `$;+g , } 6DF iDb;_? //日志 W.}].7}h public static void log(String sMsg) 6Z:YT&,f { BNm4k7
]M System.err.println(sMsg); 5>0.NiXGf' } 3Kq`<B~% pK_?}~ dDcZ!rRaL@ public static void log(int sMsg) L K7Xw3 { ETw]!
br System.err.println(sMsg); HOW7cV'X } :-+4:S } X)Gp7k1w loOOmHhJ& ISqfU]>[ /* $~u.Wq **TestMethod.java 4jwu'7Q */ ur%$aX) package NetFox; Di(9]:+ a+z2Zd!u\x }0/a\ public class TestMethod { pa/9F[ APBK9ky Ej(2w Q public TestMethod() ocA]M=3~k { ///xx/weblogic60b2_win.exe a-0cN 9 try{ yY=<'{! SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); .Ao0;:;(2- //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); SG]K SiteFileFetch fileFetch = new SiteFileFetch(bean); HkjEiU fileFetch.start(); Eu<r$6Q0}o } 7>.OVh< catch(Exception e){e.printStackTrace ();} &r_uQbx d]B=*7] v <h;Di@ } &a #GXf S`g;Y
' 3:`XG2' public static void main(String[] args) f\o
R:% { #+jUhxq new TestMethod(); zY
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