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/* ?E7=:h(@t **SiteFileFetch.java c&*l" */ hk}
t:< package NetFox; h$Tr sO import java.io.*; [4>r6Hqxr import java.net.*; Ea]T>4 =/9<(Tt%m @.ZL7$|d public class SiteFileFetch extends Thread { 76u{!\Jo/{ X$V|+lTk -k{Jp/-D SiteInfoBean siteInfoBean = null; //文件信息Bean RZh}: long[] nStartPos; //开始位置 N09KVz2Q long[] nEndPos; //结束位置 g$w6kz_[ FileSplitterFetch[] fileSplitterFetch; //子线程对象 A(+:S"|@ long nFileLength; //文件长度 Hf%_}Du /` boolean bFirst = true; //是否第一次取文件 SF< [FM%1 boolean bStop = false; //停止标志 "PzP;Br File tmpFile; //文件下载的临时信息 DA=1KaJ . DataOutputStream output; //输出到文件的输出流 B< hEx@
gxmc| //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) oZ:{@= public SiteFileFetch(SiteInfoBean bean) throws IOException =}R~0|^ { W:O0} siteInfoBean = bean; \_VmY!I5\ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); .zSD`v@[ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); nxQ}&n if(tmpFile.exists ()) T3z(k
la { yM ,VrUh bFirst = false; <%K UdkzEP read_nPos(); ? )_7U } ^ ulps**e else K-(;D4/sQE { 7'OPjtM nStartPos = new long[bean.getNSplitter()]; H$tb;: nEndPos = new long[bean.getNSplitter()]; 5v9uHxy } S}7>RHe RmO yGSO 4seciz0? f#P_xn&et } -H\,2FO O2 v. 5pJ*1pfeo public void run() L~eAQR { bUs|t //获得文件长度 GwQn;gkF //分割文件 $]*d#`Sy{% //实例FileSplitterFetch ~/|zlu*jpc //启动FileSplitterFetch线程 _tj&Psp //等待子线程返回 nwf7M#3d try{ [5Y<7DS if(bFirst) <&U!N'CE { (WE,dY+. nFileLength = getFileSize(); }-p,iTm if(nFileLength == -1)
zu<3^=3 { @^?XaU System.err.println("File Length is not known!"); YwAnqAg } kon=il<@ else if(nFileLength == -2) Ei~f`{i { QlD6i-a System.err.println("File is not access!"); ~lw<799F6 } ow.j+<M else oT3Y!Y3=< { #C\4/g?=, for(int i=0;i<nStartPos.length;i++) Jqru AW< { >Z\BfH nStartPos = (long)(i*(nFileLength/nStartPos.length)); ]a/'6GbR } GZ8:e3ri for(int i=0;i<nEndPos.length-1;i++) I7mG/ { <zfKC nEndPos = nStartPos[i+1]; F_ljx } (M`|'o! nEndPos[nEndPos.length-1] = nFileLength; Ro r2qDF } LC-)'Z9}5 } (vQ+e U:|H9+5 J&6:d //启动子线程 Gzm$OHbn fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; o~C('1Fdb for(int i=0;i<nStartPos.length;i++) U CY2]E { )#`H."Z fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), =nVmthGw siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 6vp0*ww nStartPos,nEndPos,i); H?U't
09 Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); 9$O@`P\ fileSplitterFetch.start(); \FifzKA } DJP6TFT&G // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Fe$/t( siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); @ls.&BHUP // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", jO)&KEh nEndPos = " + nFileLength); daX*}Ix // fileSplitterFetch[nPos.length-1].start(); 1r571B*O cwynd=^nC %EI<@Ps8c //等待子线程结束 k^%_V|&W/( //int count = 0; j>'B[ //是否结束while循环 ZnXejpj)D boolean breakWhile = false; N[k<@Q?*a vv/J 5#^,\ 7co`Zw4}g while(!bStop) d^84jf.U { OD+5q(!"a write_nPos(); 8(xw?|D7 Utility.sleep(500); G|9B)`S breakWhile = true; a$}mWPp+f
W9R`A o^ h(#%O for(int i=0;i<nStartPos.length;i++) _V@P-Ye { #WufZ18# if(!fileSplitterFetch.bDownOver) qY(:8yC36 { T9)wj][ . breakWhile = false; ,7,;twKz break; 9*}gl3y } ,{{SI } dr})-R if(breakWhile) o&-L0]i| break; T-8J 77Q}=80GU; xm H-!Da //count++; \G;CQV#{9 //if(count>4) 7g6RiH} // siteStop(); 59!)j>f } fLB1)kTS 77We;a .3wY\W8Dr- System.err.println("文件下载结束!"); o3h -=t } kx{!b3" catch(Exception e){e.printStackTrace ();} q)iTn)Z! } X?dfcS*!n |}S1o0v{(a R^8B3-aA`
//获得文件长度 ^
KH>1!
public long getFileSize() DQgH_! { h<3p8eB int nFileLength = -1; P s#>y& try{ kO ![X ^V URL url = new URL(siteInfoBean.getSSiteURL()); R&So4},B HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 3g'+0tEl httpConnection.setRequestProperty("User-Agent","NetFox"); a%K}j\M ~_ P YNY`" QIA R int responseCode=httpConnection.getResponseCode(); D ,M@8h, if(responseCode>=400) M|%c(K#E,3 { |.w;r
processErrorCode(responseCode); 8(A{;9^g return -2; //-2 represent access is error uO'/|[`8 } ,sDr9h/'C3 xzk}[3P{ z="L4 String sHeader; $D_HZ"ytu JR1*|u uva\0q for(int i=1;;i++) E`)Qs[?Gk { dlD}Ub //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); :p-Y7CSSu //Utility.log(in.readLine()); - ]Y wl sHeader=httpConnection.getHeaderFieldKey(i); 6k9Lx C:M if(sHeader!=null) UqtHxEI%R~ { /`+7_=- if(sHeader.equals("Content-Length")) *K)0UKBr { ~:2K#q5C nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 8:{q8xZ=k break; tWk{1IL } zM59UQU; } .#!mDlY; else ,-
HIFbXx@ break; (I=6Nnt' } `-O=>U5nH } MsjnRX:c3u catch(IOException e){e.printStackTrace ();} #&siHHs \ catch(Exception e){e.printStackTrace ();} zilaP)5x6 4}-#mBV]/ og-]tEWA1 Utility.log(nFileLength); -1W yXF|Sqv &r@H(}$1\ return nFileLength; j'Wp } SE!L : e1P7
.n} -,GEv%6c //保存下载信息(文件指针位置) E1W:hGI private void write_nPos() c{>|o { (6k>FSpg try{ \_ -DyD#3 output = new DataOutputStream(new FileOutputStream(tmpFile)); p@tp]u`7 output.writeInt(nStartPos.length); re uYTH for(int i=0;i<nStartPos.length;i++) ~zyQ(' { RWikJ // output.writeLong(nPos); `d*b]2 output.writeLong(fileSplitterFetch.nStartPos); ,!>fmU`E4 output.writeLong(fileSplitterFetch.nEndPos); 6V;:+"BkJ } :6u~aT/ output.close(); kF-TG3 } :`J>bHE catch(IOException e){e.printStackTrace ();} ORH93` catch(Exception e){e.printStackTrace ();} !}q."%%J_% } rzV"Dm$' 7bT
/KLU J@`
8(\( //读取保存的下载信息(文件指针位置) DHzkRCM private void read_nPos() 7;xKy'B\ { q\H7&w try{ 1+^n!$ DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); $L&BT 0 int nCount = input.readInt(); AbZ:(+@cP nStartPos = new long[nCount]; %6 ]\^ nEndPos = new long[nCount]; 4oJ$dN for(int i=0;i<nStartPos.length;i++) U**)H_S/~ { Nza; O[ nStartPos = input.readLong(); 0yTQ{'Cc nEndPos = input.readLong(); QUp?i
} *<kD"m input.close(); O+FBQiv } N84qcc catch(IOException e){e.printStackTrace ();} {^wdJZ~QLK catch(Exception e){e.printStackTrace ();} PYieD}' } RbAt3k;y J wFned#T o? dR\cxj private void processErrorCode(int nErrorCode) la702)N{ { PP-kz;| System.err.println("Error Code : " + nErrorCode); xt))]aH } >zR14VO`_| q{@P+2<wF XnA6/^ //停止文件下载 8.2`~'V public void siteStop() w_H2gaQ { 3{pk5_c bStop = true; x@Vt[}e for(int i=0;i<nStartPos.length;i++) (UcFNeo fileSplitterFetch.splitterStop(); tgW kX /e<5Np\X 6
[ _fD } 4:3_ER ]J } GZ"/k<~0 //负责部分文件的抓取 CWvlr nv **FileSplitterFetch.java n?Z f/T */ Y)OBTX package NetFox; M5u_2;3
[R\=M' |."G ?* import java.io.*; h0XH`v import java.net.*; Bb_Q_<DTs LP?P=c _H2tZ%RM public class FileSplitterFetch extends Thread { I-{^[p p %^!aB H ;wR String sURL; //File URL >{F!ntEj long nStartPos; //File Snippet Start Position os_WYQ4>j long nEndPos; //File Snippet End Position zn^ v!:[ int nThreadID; //Thread's ID O+vcs4 boolean bDownOver = false; //Downing is over OQc{
V boolean bStop = false; //Stop identical {? 2;0}3?; FileAccessI fileAccessI = null; //File Access interface N(BiOLZL6 j%5a+(H,z; x~Cz?ljbn public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Um'Ro 4 { q_pmwJ:UL this.sURL = sURL; o}W;Co this.nStartPos = nStart; ',# this.nEndPos = nEnd; J% AG` nThreadID = id; idz9YpW fileAccessI = new FileAccessI(sName,nStartPos);//定位 BPiiexTV9 } E[*0Bo] 7vq
DZg Z>h{`
X\2 public void run() yDuq6`R* { Pl?}>G while(nStartPos < nEndPos && !bStop) vG3M5G { ki4Xp'IK <
GU Of&"U/^ try{ ?V?<E=13 URL url = new URL(sURL); yF;?Hg HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); o"4E+1qwM httpConnection.setRequestProperty("User-Agent","NetFox"); L}b'+Wi@ String sProperty = "bytes="+nStartPos+"-"; b?>VPuyBb httpConnection.setRequestProperty("RANGE",sProperty); )r pD2H Utility.log(sProperty); `/c@nxh I3An57YV]. M#T#:wf~ InputStream input = httpConnection.getInputStream(); qzHU)Ns(_ //logResponseHead(httpConnection); ~.H~XKw *F..ZS'$[ 7P
c(<Ui+ byte[] b = new byte[1024]; {yU0D*#6 int nRead; jf 8w7T while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) kAt
RY4p { GqMB^Ad nStartPos += fileAccessI.write(b,0,nRead); X7b!;%3@ //if(nThreadID == 1) S!<"Swf: // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); wO89&XZ< } )tCx5 9 Yu;9&b
.=CH!{j Utility.log("Thread " + nThreadID + " is over!"); B/rzh? b bDownOver = true; N:7.:Yw //nPos = fileAccessI.write (b,0,nRead); [lZ=s[n. } }Wqtip:L catch(Exception e){e.printStackTrace ();} n@_)fFD% } IOS^|2:, } _C5n Apb e]Puv)S>{8 x?gQ\0S< //打印回应的头信息 m'c#uU public void logResponseHead(HttpURLConnection con) d#4 Wj0x { .}`V I`z* for(int i=1;;i++) h*l
cEzG?A { VH[l\I(h String header=con.getHeaderFieldKey(i); 0yKhp:^ if(header!=null) C,(j$Id //responseHeaders.put(header,httpConnection.getHeaderField(header)); 2zM-Ob<U` Utility.log(header+" : "+con.getHeaderField(header)); i!tc else y{?Kao7Ij break; N?zV*ngBS } @??u})^EL } OFp#<o,p $8=(I2&TW my]P_mE public void splitterStop() hj+p`e S { q{[1fE"[K4 bStop = true; wzg i
@i } K` 2i 16L"^EYq Vl-D<M+ih } ;tm3B2 zWJKYF qK Ls(&HOK[p /* 8z?$t-D O **FileAccess.java mcCB7<.
e *//文件访问(定位,写) X:DMT>5k package NetFox; UYH|?Jw!N import java.io.*; 4I
z.fAw M.X}K7Z_/ t6j-?c(' public class FileAccessI implements Serializable{ [@x t&38@p //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 $4sAnu] RandomAccessFile oSavedFile; 80 dSQ"y long nPos; OW?uZ<z >=bt X,&`WPA:S public FileAccessI() throws IOException 0,bt^a { V, E9Uds this("",0); *Gf&q } y)0gJP
L^ :J<Owh@
8 qn{ public FileAccessI(String sName,long nPos) throws IOException g~eJ
YS, { %s]U@Ku(a oSavedFile = new RandomAccessFile(sName,"rw"); dP?nP(l this.nPos = nPos; .[#xQ=9` oSavedFile.seek(nPos); K6ciqwUO } YcPKM@xo \m@]G3=] /FoUo public synchronized int write(byte[] b,int nStart,int nLen) D\@e{.$MZ| { $#D
n 4 int n = -1; cn@03&dAl try{ c]S+70!n oSavedFile.write(b,nStart,nLen); U<K|jsFo n = nLen; 7?+5%7- } ^tQPJ catch(IOException e) cPV5^9\T { N|bPhssFw e.printStackTrace (); r4;^c} } "0!~g/X`rK dBsRm{aS *sjj"^'= return n; HI}pX{.\ } ,G/\@x% ]r"31.w( z]'|nX } -$'~;O3s 3csm`JVK B?$S~5
} /* +ZY2a7uI **SiteInfoBean.java b5lk0 jA */ &8pCHGmV) package NetFox; <)r,CiS 0*/mc9 6 (xI)"{ public class SiteInfoBean { <\B],M1=s= VaOpO8y` AN|jFSQ' private String sSiteURL; //Site's URL 4he v
; private String sFilePath; //Saved File's Path Z&AHM &,yj private String sFileName; //Saved File's Name Np|:dP9#} private int nSplitter; //Count of Splited Downloading File 6-)7:9y =x|##7 !l sy&6 public SiteInfoBean() Oz"@yL} {//nSplitter的缺省值为5 #j(q/
T{x //default value of nSplitter is 5 tI/mE[W this("","","",5); x.j Yip } ls8olLM> e[d7UV[Knn Zkwy.Hq^ public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 2+c>O%L { M Ak-=?t sSiteURL= sURL; .=.yZ sFilePath = sPath; {hkM*:U sFileName = sName; s!8J.hD'I this.nSplitter = nSpiltter; Dme(Knly Co{MIuL Xq=!"E } z&>9
s)^- X67C;H+ '6Pu[^x public String getSSiteURL() =:t@;y { +G3nn!gl4 return sSiteURL; sR7{ i } l8hvq(,{ .FfwY 'V \NvC
public void setSSiteURL(String value) ~frPV8^DP { [[Jv)?jm sSiteURL = value; +X2 i/} } k1QpX@ /xX,
i_oro"%yL public String getSFilePath() ;-Y]X(z> { mh!N^[=n return sFilePath; g:~?U*f- } ZNL;8sI?> *@$($<pY& #z-iL!? public void setSFilePath(String value) qd#(`%_/ { ]yj4~_&O sFilePath = value; #Tgz,e9 } (Fbm9(q$d } K+Q9<~u hJ$C%1; public String getSFileName() jm#F*F vL { Q G=-LXv:@ return sFileName; MA/"UV&M( } VOowA^ !}Woo$#ND Se;?j- public void setSFileName(String value) e"v[)b++Y { 5'{qEZs^QU sFileName = value; :*F3 } &kXGWp V,|Bzcz \>aa8LOe public int getNSplitter() 5CRc]Q#@ { &2<&X( ) return nSplitter; }Uqa8& } N%n1>!X)! KL:6P-3 c4qp3B_w public void setNSplitter(int nCount) M'>D[5;N~ { \M'bY: nSplitter = nCount; m_r@t* } Je4.9?Ch } 5m%baf2_ Nw3I =yhn8t7@] /* N,sqr k] **Utility.java OH!$5FEc */ vxzf[ package NetFox; E
|GK3 / 1K*f4BnDr~ fn?6%q,!ls public class Utility { CwEWW\Bu w ;s ]n |Ad6~E+aL- public Utility() gvRc:5B[ { QU,TAO &)"7am(S` t7*H8 } Hq"<vp _A~~L6C //线程睡眠 v,!Y=8~9 public static void sleep(int nSecond) }G,SqpcG { @6i8RmOu} try{ &=6cz$]z Thread.sleep(nSecond); UVoLHd } :UJUh/U catch(Exception e) Fl 'xmz^ { #by9D&QP] e.printStackTrace (); W:+2We @ } oX:1 qJrC } ZimMjZ%4 13>3R+o //日志 qeK public static void log(String sMsg) tE9_dR^K { N`|Ab(. System.err.println(sMsg); 13_+$DhU-L } x4HMT/@AG2 .'NO~ G
&rYz public static void log(int sMsg) 4f*Ua`E_ { p$b=r+1f System.err.println(sMsg); thm3JfQt } cJ(zidf_$ } 1R+ )T'in c^[1]'y (zTI)EV /* ! MF"e|W **TestMethod.java 2cX"#."5p */ O.up%'%, package NetFox; HBga'xJ Sfr\%Buv X?}GPA4 W public class TestMethod { BqEubP(si W|-N>,G @IyH(J],h public TestMethod() p`l[cVQ< { ///xx/weblogic60b2_win.exe d`],l\oC try{ _F/lY\vm SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); 4pTuP / //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 1~xn[acy SiteFileFetch fileFetch = new SiteFileFetch(bean); { d2f)ra. fileFetch.start(); |>o0d~s } 6L6~IXL> catch(Exception e){e.printStackTrace ();} ^p- e <sWcS; x @tv];t } 8hdAXWPn {@K2WB xMfv&q=k@ public static void main(String[] args) b=QGbFf { ";Ig%] new TestMethod(); #ZnX6=;X }
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