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/* 0At0`Q# **SiteFileFetch.java kAftW
' */ XT7m3M package NetFox; Myq8`/_ import java.io.*; DT-VxF6 h import java.net.*; )6"}M;v i]8O?Ab>? zakhJ public class SiteFileFetch extends Thread { 2W AeSUX
.-gJS-.c "{q#)N SiteInfoBean siteInfoBean = null; //文件信息Bean #{i*9' long[] nStartPos; //开始位置 !_fDL6a- long[] nEndPos; //结束位置 WAu>p3
FileSplitterFetch[] fileSplitterFetch; //子线程对象 Jf YgZ\# long nFileLength; //文件长度 Kz HYh boolean bFirst = true; //是否第一次取文件 lC<;Q*Y boolean bStop = false; //停止标志 'zyw-1 File tmpFile; //文件下载的临时信息 }(EH5jZ' DataOutputStream output; //输出到文件的输出流 e3I""D{)[= epy2}TI //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) zsL@0]e& public SiteFileFetch(SiteInfoBean bean) throws IOException 9+ 'i(q
z { rXx#<7` siteInfoBean = bean; ,\4]uZ< //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); 6VW*8~~Xy tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ZW4f " if(tmpFile.exists ()) e~)[I! n { 8^7Oc,:~ bFirst = false; I)rnF read_nPos(); qng ~,m } a5*r1, else ImXYI7PL { 4fLRl-) nStartPos = new long[bean.getNSplitter()]; \xYVnjG, nEndPos = new long[bean.getNSplitter()]; 4Aj~mA } dNACE*g;q lF}[ YL >pq~ &)^u @16GF!. } +nYFLe t G_4>-Y#w 8Qv s\TY public void run() `v*HH}aDO { 5`h$^l/ //获得文件长度 lM-9 J?j //分割文件 J%"BCbxW~B //实例FileSplitterFetch 0|&@)` //启动FileSplitterFetch线程 @MSmg3& //等待子线程返回 C- .;m try{ F#Lo^ 8 if(bFirst) c^}y9% 4c { 80lei nFileLength = getFileSize(); '*J+mZt N if(nFileLength == -1) ]!/ { J0xHpe System.err.println("File Length is not known!"); qb>ULP0 } r:*G{m- else if(nFileLength == -2) ON2o^-%= { j=r1JV
@ System.err.println("File is not access!"); IeYYG^V<A } _ *f>UW*, else omE- c { KC;cu%H for(int i=0;i<nStartPos.length;i++) I&-r^6Yx { +_GS@)L`% nStartPos = (long)(i*(nFileLength/nStartPos.length)); 3^8Cc(bk } 4]o+)d.`( for(int i=0;i<nEndPos.length-1;i++) -.Wcz| { W!{RJWe nEndPos = nStartPos[i+1]; -S$F\% } Xa`Q;J"h nEndPos[nEndPos.length-1] = nFileLength; 7^dr[.Q[* } tZ_'>7) } ale'-V)5 gd;!1GNi] #Oka7.yz //启动子线程 8(1*,CJQg fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; sfF ~k- for(int i=0;i<nStartPos.length;i++) $1yy;IyR { G6p gG+w fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), {4J. siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), U1 _"D+XB nStartPos,nEndPos,i); VbX P7bZ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); .a4,Lr#q. fileSplitterFetch.start(); o[Ffa#sE } |A&;m}(Mt // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Oe5rRQ$O siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); $d<NN2 // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", >@vu;j\*E5 nEndPos = " + nFileLength); h/EIFve // fileSplitterFetch[nPos.length-1].start(); EGXvz)y s~M$Wo8 8~Cmn% //等待子线程结束 VYG@_fd!x //int count = 0; <6UXk[y //是否结束while循环 PUR,r%K` boolean breakWhile = false; uu6 JZp |
0 }UPC~kC+Z while(!bStop) BUXE
s0]Lv { q T6y& write_nPos(); ZJDV'mC} Utility.sleep(500); q`xc h[H breakWhile = true; qo[[P)tq ^4`aONydl #W~jQ5NS\ for(int i=0;i<nStartPos.length;i++) sOhn@*X { A5nggg4 if(!fileSplitterFetch.bDownOver) u
W]gBhO$O { _vTr?jjfK breakWhile = false; 5r5on#O& break; T]th3* } a_b#hM/c; } Fb{N>*l. if(breakWhile) VrIN.x break; <^YvgQ,m UT;%I_i!' D;en!.[Z //count++; '{
<RX //if(count>4) x?S86,RW // siteStop(); 5*44QV } |[`YGA4 9]eG|LFD 7O55mc>cF System.err.println("文件下载结束!"); ;@Zuet } gTj,I=3$?e catch(Exception e){e.printStackTrace ();} ,p|Q/M^ } ,U""m7 J
8
KiL +La2-I //获得文件长度 Im6gWDdq@6 public long getFileSize() ,
>7PG2
a { 'g%:/lwA int nFileLength = -1; MT!Y!*-5
try{ ,5W7a URL url = new URL(siteInfoBean.getSSiteURL()); 8?Rp2n*o HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); y8YsS4E^Q httpConnection.setRequestProperty("User-Agent","NetFox"); 7Fj8Mp| Y_CYx oJA_"xp int responseCode=httpConnection.getResponseCode(); d*8*9CpO: if(responseCode>=400) ny
KfM5s_ { Z@s[8wrmPl processErrorCode(responseCode); w"{DLN[Qw return -2; //-2 represent access is error Va )W[I } 6Z|h>H5a 3dN`Q:1R9 D$>!vD' String sHeader; 8i',~[ I8XP`Ccq ^6 wWv&G[8 for(int i=1;;i++) lie,A { f#z:ILG= //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); Ch]d\G M //Utility.log(in.readLine()); +zh\W9 sHeader=httpConnection.getHeaderFieldKey(i); ~cc }yDe if(sHeader!=null) lTC0kh { PhyIea if(sHeader.equals("Content-Length")) 35l%iaj]G5 { /ZyMD(_J nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ]W;6gmV break; YYpC!) } 3CD#OCz7& } yeiIP else dFBFXy break; sFM$O232 } z)M#9oAM } 'I>USl3 hI catch(IOException e){e.printStackTrace ();} 9)wYSz' catch(Exception e){e.printStackTrace ();} sSU|N;"Y ~61b^L}$ d.?}>jl Utility.log(nFileLength); #@oB2%&X? '>
ib
K| y'm!h?8 return nFileLength; t*hy"e{*a } \
ku5%y hJ(vDv% Z[Tou //保存下载信息(文件指针位置) h^g0|p5 private void write_nPos() j&X&&=
{ R=~%kt_n try{ y"yo\IDW output = new DataOutputStream(new FileOutputStream(tmpFile)); UN'n~d@~ output.writeInt(nStartPos.length); eA7
Iv{M for(int i=0;i<nStartPos.length;i++) !dT+cZsf { @eJ8wf] // output.writeLong(nPos); a,Pw2Gcid output.writeLong(fileSplitterFetch.nStartPos);
OMK,L:poC output.writeLong(fileSplitterFetch.nEndPos); JlYZ\ } @<P2di output.close(); Ry>y } Po58@g catch(IOException e){e.printStackTrace ();} >
-OOU catch(Exception e){e.printStackTrace ();} 6FzB-], } nG<oae6z" `,'/Sdr SOI=~BGd) //读取保存的下载信息(文件指针位置) q;,lv3I private void read_nPos() bkd`7(r { SE\?8cs]- try{ d3:GmB . DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ,!_6X9N-h int nCount = input.readInt(); hdDT'+ nStartPos = new long[nCount]; '4uu@?!dVk nEndPos = new long[nCount]; R%KF/1;/ for(int i=0;i<nStartPos.length;i++) b*Y Wd3 { 'Ou C[$Z nStartPos = input.readLong(); .=;IdLO,Bf nEndPos = input.readLong(); %>$<s<y } bB?E(>N; input.close(); U>lf-iI2B } 8)>x) T catch(IOException e){e.printStackTrace ();} (T*$4KGV catch(Exception e){e.printStackTrace ();} OK]Q Db } 6C2~0b ]JkEf?;. u{DEOhtI4 private void processErrorCode(int nErrorCode) }`gOfj)?i { KhND
pwO" System.err.println("Error Code : " + nErrorCode); @$jV"Y } cTGd< %g@?.YxjT F6}RPk\=i //停止文件下载 t~(jA9n public void siteStop() $.vm n,:. { nsI+04[F bStop = true; N[@H107` for(int i=0;i<nStartPos.length;i++) DURWE,W> fileSplitterFetch.splitterStop(); 8GP17j > T* `Y0P @[lMh9` } I]C
Y>' } 3aq'JVq //负责部分文件的抓取 Z$/76 **FileSplitterFetch.java 'TS_Am?o */ iv >MIdIm package NetFox; 3A`Gx# YTyrX At\(/Zy import java.io.*; 1<G+KC[F import java.net.*; }PJsPIa3j l\W|a'i 6 ]x?2P% public class FileSplitterFetch extends Thread { .yy-jf/ qA GjR!=^ ]P3m=/w String sURL; //File URL 74M 9z long nStartPos; //File Snippet Start Position l$/pp long nEndPos; //File Snippet End Position 2yK">xYY@ int nThreadID; //Thread's ID _ 94
W@dW boolean bDownOver = false; //Downing is over 1_TuA( boolean bStop = false; //Stop identical YHEn{z7 FileAccessI fileAccessI = null; //File Access interface KZjh<sjX| *U^Y@""a j4owo#OB- public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException W#bYz{s. { tle`O)&uo this.sURL = sURL; D[yyFo,z this.nStartPos = nStart; WrGA7&!+ this.nEndPos = nEnd; Qel)%|dOn nThreadID = id; i"G'#n~e fileAccessI = new FileAccessI(sName,nStartPos);//定位 ?z1v_Jh } Oin9lg-jR F(hPF6Zx( R `tJ7MB public void run() n- 2X?<_Z { >IIq_6Z# while(nStartPos < nEndPos && !bStop) To*+Z3Wd { fF)Q;~_VA bKpy?5&> q2X::Yqk try{ AfA"QCyO URL url = new URL(sURL); T2Yf7Szp HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4Et(3[P71 httpConnection.setRequestProperty("User-Agent","NetFox"); a|FkU%sjzZ String sProperty = "bytes="+nStartPos+"-"; g.&B8e httpConnection.setRequestProperty("RANGE",sProperty); Q!P%duO Utility.log(sProperty); 6axxyh% {J==y;dK Bg]VaTm[= InputStream input = httpConnection.getInputStream(); J|BElBY //logResponseHead(httpConnection); ^^V3nT2rR3 vb=]00c ~Y/A]N86, byte[] b = new byte[1024]; tA#$q;S int nRead; *|=D 0 while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) SxYz)aF~ { i]c{(gd` nStartPos += fileAccessI.write(b,0,nRead); Rv&"h_"t //if(nThreadID == 1) jg?UwR& // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 4"2%mx: } G^Gs/-
f U"7o;q X_2N9$}, Utility.log("Thread " + nThreadID + " is over!"); w80X~ bDownOver = true; K(?V]Mxl6 //nPos = fileAccessI.write (b,0,nRead); dq '2y } 9}6_B| catch(Exception e){e.printStackTrace ();} mEJ7e# } ]pvHsiI: } MZz9R*_VS ]W?cy z}Cjk6z @ //打印回应的头信息 @4;'>yr(
public void logResponseHead(HttpURLConnection con) $L^%*DkM { 5$=[x!x for(int i=1;;i++) tKt}]KHV { ]00 so` String header=con.getHeaderFieldKey(i); \$_02:# if(header!=null) Ln#o:" E //responseHeaders.put(header,httpConnection.getHeaderField(header)); 6!]@S|vDX Utility.log(header+" : "+con.getHeaderField(header)); @_C]5D^J^~ else [^
}$u[ break; TAUl{??, } fJ/INL } STwGp<8 &MpLm& gg`{kN^r.a public void splitterStop() pl>b 6 | { OH>.N"IG bStop = true; 9^!.!%6O$ } 9YI@c_1 Q ;((t| wK2$hsque } QT+kCN US)i"l7:H* us.[wp'Sh /* %O9 Wm_% **FileAccess.java ~S('\h)1 *//文件访问(定位,写) ^Z)7Z%
O package NetFox; W$jRS import java.io.*; `e ZDG ~a_hOKU5 m^oG9&"; public class FileAccessI implements Serializable{ LhAN( [ 1vq2`lWpx //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 9C \}bT RandomAccessFile oSavedFile; ]lA}5 long nPos; q%G[tXw B5 /8LEWw "1gIR^S%9 public FileAccessI() throws IOException s#5#WNzP { 1?QVtfwY this("",0); diNSF-wi,, } gN}$$vS <zqIq9}r )s>|;K{ public FileAccessI(String sName,long nPos) throws IOException `mcb0 { Ei:m@}g oSavedFile = new RandomAccessFile(sName,"rw"); nN&dtjoF this.nPos = nPos; M;XU"8 oSavedFile.seek(nPos); QyA^9@iVs } #Tc`W_- Mcc%&j 3DO*kM1s@ public synchronized int write(byte[] b,int nStart,int nLen) J?{sTj"KB { 9 5!xJdq int n = -1; 2`Bb9&ut> try{ Q.$/I+&j oSavedFile.write(b,nStart,nLen); P>q~ocq< n = nLen; U>kaQ54/ } (A2ga):Pk catch(IOException e) jk`U7G* { IsT}T}p,t e.printStackTrace (); Uhvy2}w } YN)qMI_`A >0SG]er@ |34k;l]E return n; 2.nT k } IgJG,!>h |d&Kr0QIV c*#$sZ@YA } d0T 8Cwcb . ?#Q(eLj jA^yUd- /* N#-%b"( **SiteInfoBean.java -5e8m4* */ L2Cb/!z`c package NetFox; 0>m$e(Z al Rz@N v "2A? public class SiteInfoBean { MX*4d{ l lre(]oBXA \=RV?mI3? private String sSiteURL; //Site's URL IV&5a]j private String sFilePath; //Saved File's Path :{eYm|2- private String sFileName; //Saved File's Name sz%]rN6$ private int nSplitter; //Count of Splited Downloading File [GCaRk>b, D+AkV| !|9@f$Jv public SiteInfoBean() 0xi2VN"X {//nSplitter的缺省值为5 `!X8Cn
//default value of nSplitter is 5 ~rrl"a> this("","","",5); "$5cKbJ } QX?moW6UW r+Sv(KS4i^ Xr o5~G public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Rex86!TO { *B4OvHi)' sSiteURL= sURL; DQObHB8L sFilePath = sPath;
= <A0; sFileName = sName; ~Q^.7.-T this.nSplitter = nSpiltter; hH$9GL{H >8>s
K(S] BSkmFd(* } Md9y:)P@Y ;<o?JM @@3NSKA public String getSSiteURL() $2]>{g { t0<RtIh9e return sSiteURL; >t9DI } 2ETv H~23 MYJMZ3qBi ?W dY{;& public void setSSiteURL(String value) KWYjN
h#* { 3it*l-i\ sSiteURL = value; ,y0 &E8Z } kxrYA|x SPe%9J+ %Ze7d& public String getSFilePath() (uHyWEHt { _^?_Vb return sFilePath; nql{k/6 } #$ka.Pj HOPl0fY$L 6%9 kc+
9 public void setSFilePath(String value) ,<7HLV { \ %xku: sFilePath = value; a$iDn_{ } D0_CDdW%7 =^zGn+@z Fv(FRZ) public String getSFileName() b5~p:f-&4B { Z>/
*q2 return sFileName; CZ^
,bad } ]"O*& u!HbS*jqq Ke[`zui@? public void setSFileName(String value) h0x'QiCc { Jz0AYiCq sFileName = value; FBrh!vQ< } 3k8nWT:wT <h|&7 ^;{uop"DS public int getNSplitter() Y#P!<Q>} { P=P']\`p+ return nSplitter; =~,2E;#X } ',D%,N}J h*hkl# h`v T[u~l public void setNSplitter(int nCount) @ I&k|\ { gLFSZ nSplitter = nCount; mU[ } [Ak0kH> } %LqT>HXJ re4z>O* @tRDKPh /* 3C;;z **Utility.java 6xr%xk2E */ :Ez*<;pF' package NetFox; }0/l48G cl{mRt0 WS@"8+re; public class Utility { osO\ib_% iTT7<x
ym` 4v5w public Utility() M4
})) { 4UPxV"H RA){\~@wC 6#:V3 ; } j5smmtM`s Vvv;m 5. //线程睡眠 Ofb&W
AD public static void sleep(int nSecond) YoK )fh$ { 9B>P Qbs try{ }Q^*Zq9- Thread.sleep(nSecond); "2tKh!?Q } cUw$F{|W catch(Exception e) )RWY("SUy1 { ?oV|.LM:W e.printStackTrace (); &tiJ=;R1 } Y!ypG- } 2PNe~9)*# {g4w[F!77 //日志 ZBQ @S public static void log(String sMsg) 1bDXv,nD { >C5u>@%9O System.err.println(sMsg); k|jr+hmn": } .WBp!*4 v@fy*T\3 cQ`0d3 public static void log(int sMsg) (b1e!gJpy { n0 V^/j} System.err.println(sMsg); Uu Zjf9} } S*7 6V"") } OeZ"WO F0kAQgUv W]>%*n /* iJKGzHvS **TestMethod.java UQP>yuSx */ fL-$wK<p< package NetFox; Vhe$vH ,sg\K>H= [4yw? U public class TestMethod { P*ZMbAf. =L?2[a$2; 93,7yZ5# public TestMethod() q(2ZJn13f { ///xx/weblogic60b2_win.exe ?O]RQXsZ2 try{ X]W( SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); uA t{WDHm //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); _ib
@<% SiteFileFetch fileFetch = new SiteFileFetch(bean); AW!A+?F6 fileFetch.start(); iG=Di)O } }{&;\^i catch(Exception e){e.printStackTrace ();} CHCT
e [;~"ctf{ nuA
0%K } *q[;-E(fZ# eq<!
.Ep&O# public static void main(String[] args) E},zB*5TH { |GP&!] new TestMethod(); 5-&"nn2*}1 } b0x%#trA{ } R.
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