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/* !$5.\D **SiteFileFetch.java 'k(aZ" */ XDcA&cM}p package NetFox; EAi!"NJ import java.io.*; tWN hFQ' import java.net.*; $wx)/t< /WWD;keP5 :Mq-4U.e public class SiteFileFetch extends Thread { q=(.N>% 5<?s86GHh' |'" 17c& SiteInfoBean siteInfoBean = null; //文件信息Bean ;&v~tD7 long[] nStartPos; //开始位置 ri?>@i-9= long[] nEndPos; //结束位置 uy^vQ/ FileSplitterFetch[] fileSplitterFetch; //子线程对象 "ZU CYYre long nFileLength; //文件长度 _yJAn\ boolean bFirst = true; //是否第一次取文件 R#0Z boolean bStop = false; //停止标志 b9gezXAcd File tmpFile; //文件下载的临时信息 g(Dr/D DataOutputStream output; //输出到文件的输出流 ^~Dmb2h 5$w`m3>i( //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) E |BE(F;K public SiteFileFetch(SiteInfoBean bean) throws IOException NHjZ`=Js { C/L+gU& siteInfoBean = bean; 7xr@$-U //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); w;Jby tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ;)nV if(tmpFile.exists ()) ~xSAR;8 { NiCB.a bFirst = false; !?u{2D read_nPos(); ~gAp`Q } ;mw$(ZKa# else L 2k?Pl { <5wk~|@t nStartPos = new long[bean.getNSplitter()];
<B%s9Zy nEndPos = new long[bean.getNSplitter()]; =Pu;wx9 } xOAA1# ~$\9T.tre2 Fw!TTH6l0 6*]g~)7`Q~ } q;<=MO/ m5/d=k0l B"rfR_B2M# public void run() vm
y?8E6+ { bb]r //获得文件长度 6bXR?0$*M. //分割文件 ToVi; //实例FileSplitterFetch ;&N=t64" //启动FileSplitterFetch线程 vL,:Yn@b //等待子线程返回 WFTXSHcG try{ yaD_c; if(bFirst) X/l{E4Ex { 3r]:k)J nFileLength = getFileSize(); ~Os1ir. if(nFileLength == -1) ,4&?`Q { `f~\d.*U System.err.println("File Length is not known!"); QxaW
x } g} /efE else if(nFileLength == -2) V{yP/X
{ /P>t3E2c System.err.println("File is not access!"); 6?C|pO } ?mCino else X?8 EPCk { qij<XNZU"& for(int i=0;i<nStartPos.length;i++) I\DH { XFiP8aX< nStartPos = (long)(i*(nFileLength/nStartPos.length)); &=-ZNWNo } qlJzXq{|` for(int i=0;i<nEndPos.length-1;i++) (WISf}[l; { *49lM; nEndPos = nStartPos[i+1]; [$<\*d/ } ..5rW0lr nEndPos[nEndPos.length-1] = nFileLength; (&)PlIi7 } e2X\ll } CC8)yO g]V_)} m@Vz42g~+ //启动子线程 T|o ]8z fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; ;;#_[Zl for(int i=0;i<nStartPos.length;i++) nH=8I~jp { @g{FNXY$ m fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), mz'r<v2Tc siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), BM,]Wjfdj nStartPos,nEndPos,i); %]m/fo4b Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); p!OCF]r fileSplitterFetch.start(); abW[hp } ruKm_j#J // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), +=:*[JEK,U siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); pp2,d`01[L // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", MN.h,^b nEndPos = " + nFileLength); Ddr.kXIpo // fileSplitterFetch[nPos.length-1].start(); 2.>WR~\
4.7 PL t6+c"=P# //等待子线程结束 !pqfx93R* //int count = 0; XDt MFig //是否结束while循环 fK %${ boolean breakWhile = false; u Sl&d u3B[1Ae:K YXi'^GU@ while(!bStop) UBm L:Qv { o^!_S5zKe. write_nPos(); !'jZ
!NFO Utility.sleep(500); Xj Rk1~ breakWhile = true; Biva{'[m RI[=N:C^ #aeKK7[ for(int i=0;i<nStartPos.length;i++) 3!H&bOF { |}-bMQ| if(!fileSplitterFetch.bDownOver) _-M27^\vV { S#^2k!(|G breakWhile = false; 5OR2\h!XZt break; <?&Y_ } ,Hzz:ce } 2lc if(breakWhile) L/Ytk ag break; WCdl 25L# o
_G,Ph!7 sMn)[k
vX //count++; AVnH|31dC~ //if(count>4) C+m%_6< // siteStop(); zFba("E Z } %2;Nj;
J$ 2I|`j^ c;13V(Djy System.err.println("文件下载结束!"); ]VkM)< + } dKk#j@[n" catch(Exception e){e.printStackTrace ();} N*w6D: } nr{#Krkb X"k:+ u{'|/g& //获得文件长度 ].Sz2vI public long getFileSize() Z0'&@P$ { lA/.4"nN int nFileLength = -1; @,:6wKMc try{ \`:nmFO(9 URL url = new URL(siteInfoBean.getSSiteURL()); AbExJ~JV\g HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); F4*ssx httpConnection.setRequestProperty("User-Agent","NetFox"); 4x)etH^o 1o8C4?T& Ov-Y.+L: int responseCode=httpConnection.getResponseCode(); !S3^{l- if(responseCode>=400) ixY[ HDPq { /=(PMoZu processErrorCode(responseCode); TlEd#XQgf& return -2; //-2 represent access is error j%`%
DQ } 4F`&W*x _t/~C*=:= BI| TM2oa String sHeader; P{K;vEp euyd(y$'k j6: jN-z for(int i=1;;i++) =`KA@~XH4 { ;xl0J*r //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); chE}TK //Utility.log(in.readLine()); VrIR!9%: sHeader=httpConnection.getHeaderFieldKey(i); r6QshCA" if(sHeader!=null) Ht"?ajW{ { B{lj.S`mB if(sHeader.equals("Content-Length")) Bc*FH>E { &|K9qa~)Y nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); `6:B0-r break; {zTnE?(o` } z}a9%Fb } fjd)/Gg else }ip3d m break; rk-GQ#SKU } fpa~~E- } :OFs"bC catch(IOException e){e.printStackTrace ();} PWBcK_4i% catch(Exception e){e.printStackTrace ();} mz|p=[lR| j>`-BN_ ~Jh1$O,9o Utility.log(nFileLength); `oU|U!|
'N3)>!Y:8 b]b+PK*h return nFileLength; ~JS BZ@ } h5Ee*De >i_ #q$o l86gs6> //保存下载信息(文件指针位置) DS1{~_>nFu private void write_nPos() ]SmN}Iq1 { Miz?t*|{[ try{ ;O7Vl5R output = new DataOutputStream(new FileOutputStream(tmpFile)); i*((@: output.writeInt(nStartPos.length); #M)+sK$H%f for(int i=0;i<nStartPos.length;i++) ]5r@`%9 { !T#EkMM // output.writeLong(nPos); B#G:aBCM output.writeLong(fileSplitterFetch.nStartPos); jx{wOb~oO) output.writeLong(fileSplitterFetch.nEndPos); z*UgRLKZD } Y:R*AOx output.close(); ni85Ne$ } IG Ax+3V catch(IOException e){e.printStackTrace ();} }a%1$>sj catch(Exception e){e.printStackTrace ();} GO)5R, } $Jo4n>/ ph$vP;} bO` SBq$ //读取保存的下载信息(文件指针位置) 1Ror1%Q"? private void read_nPos()
i }_" { L|L;< try{ Sh2BU3 DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); akFT 0@9 int nCount = input.readInt(); 7^7Jh&b)/ nStartPos = new long[nCount]; s o1hC nEndPos = new long[nCount]; hv`I`[/J for(int i=0;i<nStartPos.length;i++) 63i&< { 3$_JNF` nStartPos = input.readLong(); dmWCNeja. nEndPos = input.readLong(); T#<Q[h= } (6Ciqf8 input.close(); I^Dm 3yz } N8iLI` catch(IOException e){e.printStackTrace ();} "~mY4WVG catch(Exception e){e.printStackTrace ();} a4[t3U } Q5b9q$L$ e%lxRN"b =4$ErwI_dm private void processErrorCode(int nErrorCode) %P7qA { |\W53,n9 System.err.println("Error Code : " + nErrorCode); |R2p^!m } pm=m~ .8->n aj| J&iSS9c //停止文件下载 #aQQd8 public void siteStop() l8khu)\n4R { s"XwO8yhM bStop = true; fy$?~Ji& for(int i=0;i<nStartPos.length;i++) Eq%f`Qg+1E fileSplitterFetch.splitterStop(); ^
L]e]<h( I~;w Q {
V)`6 } +0?1"2 } D4\[D8pD //负责部分文件的抓取 fD lo L **FileSplitterFetch.java 'b0r?A~c= */ <F8e?xy package NetFox; W*Si"s2 jfiUf1Mj 9Z2 1|5 import java.io.*; JA*+F1s import java.net.*; 0'HQ=pP ah%Ws#& <D P8a<{{ public class FileSplitterFetch extends Thread { $
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`8S3Y YS#*#!ZMn? String sURL; //File URL 5rmU9L long nStartPos; //File Snippet Start Position j XH9Pq4 long nEndPos; //File Snippet End Position 3FtL<7B'. int nThreadID; //Thread's ID \_ boolean bDownOver = false; //Downing is over 3vKTCHbk9 boolean bStop = false; //Stop identical v2I? 5?j FileAccessI fileAccessI = null; //File Access interface v<t?t<|J e_|Z& 4i
PVpro public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ~8yh,U { tXqX[Td`0g this.sURL = sURL; 2n$Wey[ this.nStartPos = nStart; peF)U
!`D this.nEndPos = nEnd; 1yZA_x15: nThreadID = id; L$i:~6 fileAccessI = new FileAccessI(sName,nStartPos);//定位 uIbAlE } @({=~
W^ 7nPcm;Er FZ?:BX^ public void run() :EAh%q
{ 4y#XX[2Wj while(nStartPos < nEndPos && !bStop) X i1|% { `IEA haY]gmC _-lE$
O try{ Aj|->Y URL url = new URL(sURL); |g.CS$'#Nt HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 33EF/k3vW httpConnection.setRequestProperty("User-Agent","NetFox"); Av?R6 String sProperty = "bytes="+nStartPos+"-"; <zL_6Y2 httpConnection.setRequestProperty("RANGE",sProperty); 3LT~-SvL Utility.log(sProperty); w|6/ i/X
q"
f65d4c lcm3wJ'w InputStream input = httpConnection.getInputStream(); pY@QR?F\ //logResponseHead(httpConnection); !6 L!%Oi 1f<R,> #G.eiqh$a byte[] b = new byte[1024]; aopZ-^ int nRead; #-\5O while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) DnFzCJ { +C8O" nStartPos += fileAccessI.write(b,0,nRead); ZMb+sUK //if(nThreadID == 1) Y+UJV6 // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); Q"ZpT } l'/`2Y1 YR*gOTD (jA5`4>u Utility.log("Thread " + nThreadID + " is over!"); L2,2Sn*4i bDownOver = true; rHTZM,zM=H //nPos = fileAccessI.write (b,0,nRead); !8[T*'LJ-
} 4`,7tj catch(Exception e){e.printStackTrace ();} DtFHh/X } L7Hv) } v@soS1V! o0]YDX@T nj'5iiV`] //打印回应的头信息 5XUm} D$ public void logResponseHead(HttpURLConnection con) Ga5*tWj { xy]O8>b for(int i=1;;i++) ~t~[@2?WG { h AAh String header=con.getHeaderFieldKey(i); *qm|A{FQR if(header!=null) CYLab5A //responseHeaders.put(header,httpConnection.getHeaderField(header)); P*A+k"DU1 Utility.log(header+" : "+con.getHeaderField(header)); Yu\$Y0 {] else N?ccG\t break; R\5,H!V9n } &F
uPd}F } a1~|?PCbY 9gcW; XZb=;tYo public void splitterStop() o6px1C: { @T~XwJ~ bStop = true; dazNwn }
LNWS "t&=~eOe3 -0d9,,c } eO <N/?t S(Af o` L@{'J /* s|e.mZk/ **FileAccess.java ud r\\5 *//文件访问(定位,写) Yi%lWbr package NetFox; (|K+1R import java.io.*; x*7A33@i "-$}GUK?Z OUi;f_*[r public class FileAccessI implements Serializable{ ~tA ^[tK FC] *^B //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 %-blx)Pc RandomAccessFile oSavedFile; SG)Fk *1 long nPos;
C '(
Y PGJh>[s 0[l}@K? public FileAccessI() throws IOException ZPmqoR[ { J:N(U0U this("",0); <"5l<E } 94+^K=lAX }ouGxs+^[ {&n- @$? public FileAccessI(String sName,long nPos) throws IOException zsXgpnlHT { Pp-N2t86#2 oSavedFile = new RandomAccessFile(sName,"rw"); *~)6 sm this.nPos = nPos; T;92M}\ oSavedFile.seek(nPos); uaF-3 } N l@G\_ R%WY!I8C }#FV{C] public synchronized int write(byte[] b,int nStart,int nLen) wuH*a3( { wHj1+W int n = -1; $&as5z8 try{ ._G,uP$ oSavedFile.write(b,nStart,nLen); -`PziGl@< n = nLen; H%O\4V2s } o99ExQ. catch(IOException e) <{kPa_`' { _u[tv, e.printStackTrace (); 1?Y>Xz } )XDBK*! YRlf U5 Ic2?1<I ZA return n; rE+B}O } ;qgo= $H@SXx &s+l/;3 } ~.W]x~X$ r'OqG^6JFN bFG~08Z ,d /* XPX?+W=mv **SiteInfoBean.java (SyD)G\rj */ W#F9Qw package NetFox; Hh1_zd| XGB\rfvS =wh[D$n$~ public class SiteInfoBean { e_=K0fFz eM<N?9 s kkq1:\pZ]a private String sSiteURL; //Site's URL ab2FK private String sFilePath; //Saved File's Path ]bY|>q private String sFileName; //Saved File's Name e'K~WNT private int nSplitter; //Count of Splited Downloading File MT-Tt F@u7Oel@m ]Lub.r public SiteInfoBean() }3{eVct#| {//nSplitter的缺省值为5 k_7m[o //default value of nSplitter is 5 ;7P'>j1?U this("","","",5); )dkU4] } VmqJMU>. +l7)7qKx l(Rn=? public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) u"HGT=Nl { b(0<,r8 sSiteURL= sURL; .$&^yp sFilePath = sPath; -!PJHCLd sFileName = sName; j}^w:W76 this.nSplitter = nSpiltter; o]<Z3) ~!$"J}d}< ,&_H
} axnlI*! aJ+V]WmA (Mk7"FC7 public String getSSiteURL() gHe:o` { '#+&?6 p return sSiteURL; 0vv~G\yM } 0nb%+],pX oPKLr31zt p3M!H2W public void setSSiteURL(String value) j9+4},>>CU { B->AY.&j sSiteURL = value; fQfn7FaW_\ } (.4lsKN< Tvx1+0Z%z d6J/)nl public String getSFilePath() v6*0@/L
M { aFTWzz return sFilePath; Zonjk%tC } ;QBS0x\f@ &en.
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public void setSFilePath(String value) cXb*d|-|N { o!tC{"g sFilePath = value; K?uZIDo } +x2JC' -H CYaN;HV@_ 4'O,xC public String getSFileName() ?9~^QRLT { u}5CzV ` return sFileName; {,%&}kd> } lb_N"90p OH
t)z.
i\sBey ND" public void setSFileName(String value) >bW=oTFz { T-] {gc sFileName = value; ?Lg(,-: } }Fjbj5w0 1&MCS%UTL 83vMj$P public int getNSplitter() 0i*V? { ;C@mT;hR return nSplitter; : B^"V\WE } |N&t q94;x|63 ;%e)t[5 public void setNSplitter(int nCount) i7#4&r { DPI[~ nSplitter = nCount; B\Nbt!Ps } '7?Y+R@|L } ,:t,$A vJ&_-CX 4}H+hk8- /* 8US#SI'x **Utility.java
GLf!i1Z */ -EiTP:A package NetFox; J
p?XV<3Z h.EI(Ev"GN H,(vTthd public class Utility { #~
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`p()ko k6bct@7 public Utility() >$D!mraih { /yI4;:/ OFtaOjsyUa jqaX|)8|$ } m'"r<]pB*4 Skt-5S# //线程睡眠 wMVUTm public static void sleep(int nSecond) $?56 i4 {
n4{%M try{ +9Tc.3vQ Thread.sleep(nSecond); EVPQe- } pCE
GZV,d@ catch(Exception e) B7f<XBU6> { \GL] I. e.printStackTrace (); Jpapl%7v } (h0@;@@7hW } a`'>VCg ozRO:*51 //日志 +YvF+E public static void log(String sMsg) gy.UTAs
N { LSC[S: System.err.println(sMsg); Gn2{C% } ga
+,
P ]d1'5F][H 95,]86 public static void log(int sMsg)
V#ELn[k { Vgj#-7bdyi System.err.println(sMsg); a
8k2*u } uRb48Qy2 } ]yPK}u :BPgDLL, kPX+n+$ /* (%B{=w}8 **TestMethod.java `H! (hMMV */ ?,pwYT0g package NetFox; NTu|cX\R j=O+U_w T1d@=&0" public class TestMethod { vFk@
sBadiDG~9 Jx+6Kq( public TestMethod() 9Vt
^q%DC { ///xx/weblogic60b2_win.exe 8Yq06o38C try{ $\u\4n SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); pq)
= //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); PLz{EQ[cV SiteFileFetch fileFetch = new SiteFileFetch(bean); k?fz @H8D( fileFetch.start(); j#//U2VdN } A]bQUWt2 catch(Exception e){e.printStackTrace ();} zQ=b|p]|W z/J?!ee ;U'\"N9 } 4!/QB6 ?,$:~O*w d~<$J9% public static void main(String[] args) ;KQU%
k$ { ":/c|! new TestMethod(); C98F?uo%Q } )]fiyXA
} -YQh
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