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/* 8Z TN **SiteFileFetch.java $]4>;gTL' */ }QszOi\fV1 package NetFox; Yx21~:9} import java.io.*; o2
=UUD& import java.net.*; 'iM;e K L lmdydC% W+[XNIg5 public class SiteFileFetch extends Thread { Ca[H<nyj >E;-asD 4Gl0h'!( SiteInfoBean siteInfoBean = null; //文件信息Bean huTa
Ei long[] nStartPos; //开始位置 j)K[A%( long[] nEndPos; //结束位置 E,I*E{nd9 FileSplitterFetch[] fileSplitterFetch; //子线程对象 SF.4["$ long nFileLength; //文件长度 s)#8>s - boolean bFirst = true; //是否第一次取文件 {{b&l! boolean bStop = false; //停止标志 RbUhLcG5 File tmpFile; //文件下载的临时信息 C9-IJj
DataOutputStream output; //输出到文件的输出流 \{F{yq( nezdk=8J/ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) vEJ2d& public SiteFileFetch(SiteInfoBean bean) throws IOException 9$&+0 { hlPZTr=a siteInfoBean = bean; I g/SaEF //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); p`//
*gl tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); Byf5~OC if(tmpFile.exists ()) pyEi@L1p { T:ye2yg bFirst = false; - aCtk$3 read_nPos(); d'~sy> } >#}MDwKZD else 6fvzTd}, { DPuz'e* nStartPos = new long[bean.getNSplitter()]; 6iwIEb nEndPos = new long[bean.getNSplitter()]; hLyD#XCFA } x0^O?UR x!klnpGp 2c>e Mfa 3.q%?S}* } 1eC1Cyw uJz<:/rwZ- pK=$)<I"6 public void run() 90)0\i+P { w
^ v*1KA& //获得文件长度 \Q+9sV
5,[ //分割文件 808E) //实例FileSplitterFetch ,3_;JT"5 //启动FileSplitterFetch线程 t^HQ=*c //等待子线程返回 lv_|ws try{ K!/"&RjW. if(bFirst) )i&z!|/2 { +I$c+WfU nFileLength = getFileSize(); B4^+&B# if(nFileLength == -1) Ekx3GM_] { o]0v#2l' System.err.println("File Length is not known!"); ZMmaM "9 } l[=7<F else if(nFileLength == -2) YQ}xr^VA { FLI\SF< System.err.println("File is not access!"); L,*KgLG } %liu[6_ else }q1@[
aE { >C"f'!oM,j for(int i=0;i<nStartPos.length;i++) p F\~T> { %(a<(3r nStartPos = (long)(i*(nFileLength/nStartPos.length)); a!MhxM5 } L8K=Q for(int i=0;i<nEndPos.length-1;i++) 1:<= zqh0 { 4`F(RweGx nEndPos = nStartPos[i+1]; >$=-0?. } ?Xm!;sS0 nEndPos[nEndPos.length-1] = nFileLength; 8H4"mxO } 1iq,Gd-G. } <7HVkAa J&4QI( b. u.(
WW(/N //启动子线程 QFOmnbJg fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; wD|,G!8E2 for(int i=0;i<nStartPos.length;i++) #L}YZ { uGm~ Oo fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), rQ|^HNj siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), kCkSu- nStartPos,nEndPos,i); _{CMWo"l Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); |cpBoU fileSplitterFetch.start(); qd*3| O^ } '< ]:su+ // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 7.fpGzUM siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); WPVur{?< // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", _jK
nEndPos = " + nFileLength); dR"H,$UH // fileSplitterFetch[nPos.length-1].start(); 5b
X*8H
D :TU;%@7 %M{qr!?uj //等待子线程结束 Zw+VcZz3 //int count = 0; jR-`ee}y2 //是否结束while循环 c"BFkw boolean breakWhile = false; OgJd^ su]CaHU tydD~a while(!bStop) GOJ*>GpS { cU8Rm\? write_nPos(); BrYU*aPW; Utility.sleep(500); ,4oYKJ$+h breakWhile = true; FQdz":5 7%?2>t3~ DSG tt/n for(int i=0;i<nStartPos.length;i++) WAPN,WuW { :.kc1_veYS if(!fileSplitterFetch.bDownOver) w~J 7|8Y { ;h[p " breakWhile = false; ;V(- ;O break; 8wGq:@#= } mG4myQ?$ } XMb]&VvH if(breakWhile) :uhU<H<,f break; 5wM*(H^c[ juQ&v>9W) IC&xL9 //count++; _DPWp,k<~ //if(count>4) ylm*a74-X // siteStop(); i
oX [g } Y<('G5A JmDi{B? pvL)BD System.err.println("文件下载结束!"); E$5)]<p! < } Jy&O4g/'5 catch(Exception e){e.printStackTrace ();} [{.e1s<EK } Q 6djfEN> OiI[w8 #<ppiu$ //获得文件长度 r|$@Wsb?# public long getFileSize() ~(E.$y7P { }{>)2S int nFileLength = -1; j8p</gd try{ nn>1OO URL url = new URL(siteInfoBean.getSSiteURL()); ""cnZZ5) HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); 4yhan/zA httpConnection.setRequestProperty("User-Agent","NetFox"); ^LfN6{ H/8H`9S$ <CrNDY int responseCode=httpConnection.getResponseCode(); ACQc
0:q if(responseCode>=400) 8S2sNpLi-g { *`~
woF processErrorCode(responseCode); dQUZ11 return -2; //-2 represent access is error X0<qG } P:GAJ->;]> *^j'G^n R `}C/'Ty String sHeader; 7_Yxz$m Xv[5)4N 6&8 ([J for(int i=1;;i++) yuyI)ebC { l*^J}oY //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); W[trsFP1? //Utility.log(in.readLine()); @tQu3Rq@ sHeader=httpConnection.getHeaderFieldKey(i); 3vx5dUgl, if(sHeader!=null) )?35!s6 { AF ,*bb if(sHeader.equals("Content-Length")) HUF],[N { Tb~|p_;o nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); (,Zy2wr= break; y/}[S@4uB } zrt \]h+ } o+UCu`7e else +O`3eP`u break; <a9<rF =r } L%G/%*7;c } VyQ@. Lm catch(IOException e){e.printStackTrace ();} H CKD0xx catch(Exception e){e.printStackTrace ();} ;Du+C% ? yL3XB> T(LqR?xOo Utility.log(nFileLength); !|!k9~v! ^PwZP;On #_]/Mr1 return nFileLength; }yQ&[Mt } ~s.~X5 Yj%hgb:) ra87~kj< //保存下载信息(文件指针位置) a]0B{ private void write_nPos() @.IGOh { w>-@h>Ln try{ U^qQ((ek output = new DataOutputStream(new FileOutputStream(tmpFile)); p
mv6m output.writeInt(nStartPos.length); 0,1x-
yD for(int i=0;i<nStartPos.length;i++) ZJL8"(/R { _v~c3y). // output.writeLong(nPos); +ucj>g1(# output.writeLong(fileSplitterFetch.nStartPos); m\9R;$\ output.writeLong(fileSplitterFetch.nEndPos); yV{&x } G]Rb{v,r output.close(); _+c' z } gcS?r : catch(IOException e){e.printStackTrace ();} x`7Ch3`4} catch(Exception e){e.printStackTrace ();} zK Rt\;PW } 2~`lvx @9,=|kxK t:MeSO //读取保存的下载信息(文件指针位置) R/!lDv!
private void read_nPos() g]kM7,/M { &j}08aK% try{ 9;W2zcN DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); *\#/4_yB} int nCount = input.readInt(); -cDS+*[ nStartPos = new long[nCount]; z{wW6sgPr nEndPos = new long[nCount]; .h({ P#QT for(int i=0;i<nStartPos.length;i++) Uc>kiWW { !VLk|6mn nStartPos = input.readLong(); :/rl \woA> nEndPos = input.readLong(); Y-Iu&H+\ } ALcin))+B input.close(); Q{+*F8%8V< } 2@TgeV0Y[ catch(IOException e){e.printStackTrace ();} #}M\ J0QG catch(Exception e){e.printStackTrace ();} IP?15l w } kSW=DE|#} L{pz)')I F~bDA~ private void processErrorCode(int nErrorCode) v,T:V#f^ { " V[=U13 System.err.println("Error Code : " + nErrorCode); 9Hu;CKs } }I}/e
v .[8!
E_ /,C;fT<R //停止文件下载 {oXU)9vj public void siteStop() ^$FNu~|K { H1bHQB bStop = true; _ MsO2A for(int i=0;i<nStartPos.length;i++) 2/WtOQIB fileSplitterFetch.splitterStop(); PpXzWWU": mS$9D{ [zC1LTXe } CdEQiu } P}`|8b1W //负责部分文件的抓取 PL/g@a^tY **FileSplitterFetch.java HZASIsl */ >-&B#Z^, package NetFox; 8k( zU>^ t4;eabZK lpq)vKM}^ import java.io.*; `Wl_yC_*G; import java.net.*; /EIQMZuYp Ob ~7w[n3 ]QU
9|1 public class FileSplitterFetch extends Thread { `p!&>,lrk MV{\:l}y H^Mfj!S String sURL; //File URL 5VS};&f long nStartPos; //File Snippet Start Position Ie<H4G5Vh long nEndPos; //File Snippet End Position gg0rkg int nThreadID; //Thread's ID -gQtw%
`x boolean bDownOver = false; //Downing is over T}}T`Ce boolean bStop = false; //Stop identical kk`K)PESi FileAccessI fileAccessI = null; //File Access interface bIXudE[8zq <<=.;`(/v 8AjQPDn+ public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException ]KQv]' { 9T\uOaC" this.sURL = sURL; @$Xl*WT7 this.nStartPos = nStart; VGYx( this.nEndPos = nEnd; k~0#Iy_{M nThreadID = id; r* q fileAccessI = new FileAccessI(sName,nStartPos);//定位 eS`ZC!W } R7o'V* d bI-uF8" {gC?kp public void run() CL|d> { "[QQ(]={ while(nStartPos < nEndPos && !bStop) &%UZ"CcA { <~ Dq8If ?v
z[Zi a
Xn:hn~O try{ AqA.,;G URL url = new URL(sURL); pqCp>BO?O HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); xA'RO-a}h httpConnection.setRequestProperty("User-Agent","NetFox"); :'
=le*h String sProperty = "bytes="+nStartPos+"-"; dEhFuNO<2 httpConnection.setRequestProperty("RANGE",sProperty); 0$qK: ze Utility.log(sProperty); dfA2G<Uc _v#Vf*# Zt"#'1 InputStream input = httpConnection.getInputStream(); SHc?C&^S //logResponseHead(httpConnection); :hBLi99
o )krBjF.$ B:>>D/O byte[] b = new byte[1024]; ?NVX# t' int nRead; qEvbKy} while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) u?F^gIw { O:]e4r,' nStartPos += fileAccessI.write(b,0,nRead); | |u //if(nThreadID == 1) %ws@t"aER // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); BvLC% } ^, &' /HE{8b7n3F ~eZ]LW]) Utility.log("Thread " + nThreadID + " is over!"); Z,~PW#8<& bDownOver = true; h+c9FN //nPos = fileAccessI.write (b,0,nRead); i*]$_\yl" } dEI]|i
r catch(Exception e){e.printStackTrace ();} U>i}C_7g } /u&7!>, } 0;L.h|R T( H
-K%F_# [ KDNKK //打印回应的头信息 Z?<&@YQS public void logResponseHead(HttpURLConnection con) G@3Jw[t { JLbmh1' for(int i=1;;i++) YfstE3BV {
a)8;P7 String header=con.getHeaderFieldKey(i); 0<XxR6w if(header!=null) ei82pLM
z //responseHeaders.put(header,httpConnection.getHeaderField(header)); ]&?8l:3-G Utility.log(header+" : "+con.getHeaderField(header)); I&%KOe0 else lt("yqBu break; ATWa/"l(H- } nh]HEG0CZJ } `qV*R
2 FN<Sagj l[6lXR&| public void splitterStop() 0m,q3 { d3]<'B:nb bStop = true; >rYkVlv } P9o=G=i >x1yFwX}-f 7fC:'1]G } _7;D0l pupt__NZ)n wu. >'v?y /* z+K1[1SM **FileAccess.java KRM:h`+-.- *//文件访问(定位,写) n#5S-z1KNw package NetFox; F@b=S0}K import java.io.*; n}dLfg* } 4ZWAzH cR=o!2O public class FileAccessI implements Serializable{ tZY6{,K%4 ;YZ'd"0v //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 )~CNh5z6Y RandomAccessFile oSavedFile; RB9ZaL\ long nPos; $>zqCi2tB< N<O<wtXIj iB}*<~`.Eg public FileAccessI() throws IOException RBLOc$2 { [ut[W9 this("",0); txiX1o!/L } O Cnra UZ1Au;(| -'
=?Hs. public FileAccessI(String sName,long nPos) throws IOException _`.Q7 { !tSh9L;<O oSavedFile = new RandomAccessFile(sName,"rw"); d+nxvh?I8 this.nPos = nPos; c=D~hz N oSavedFile.seek(nPos); zJ_y"bt } SPp|/ [i7 _h I81Lzq LvMA('4 public synchronized int write(byte[] b,int nStart,int nLen) pV`/6
} { '?6j.ms
M int n = -1; (v&iXD5t try{ (3 Z;c_N oSavedFile.write(b,nStart,nLen); !xU[BCbfYV n = nLen; lV9 } Svdmg D! catch(IOException e) }1 j' { =&)R2pLs* e.printStackTrace (); 7M~/[f7Z{ } pM~-o? |'j,|^< }nptmc return n; QabLMq@n` } wlEK"kKU >[ g=G Os*s{2OvO } qYQ
vjp pq:[` rl
x6a@MiD /* QZ+G2$ **SiteInfoBean.java /I:&P Pff */ YRCOh:W* package NetFox; RN$>!b/ 6m@B.+1 Ed+jSO0 public class SiteInfoBean { lx7]rkWo|a e|q~t
{=9S 8~F?%!X private String sSiteURL; //Site's URL %LuA:{EVD private String sFilePath; //Saved File's Path M^lP`=sSv private String sFileName; //Saved File's Name 6`X}Z'4.Ox private int nSplitter; //Count of Splited Downloading File i v.G tns4 e\ f@k.4aS public SiteInfoBean() !="8ok+ {//nSplitter的缺省值为5 y&V'GhW!dd //default value of nSplitter is 5 P26"z))~d this("","","",5); tO?-@Qf/9< } i1K$~ f`iDF+h<6 !JBj%| ! public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) u'^kpr`y { 'hFL`F* sSiteURL= sURL; ?<T=g sFilePath = sPath; /!N=@z) sFileName = sName; cgO<%_l3` this.nSplitter = nSpiltter; Y ` Z,52 8T[<&<^- Cu_-QE } n(i/jW~0w rM?
J40&. M@Ti$= public String getSSiteURL() ~[f`oC { Er
-rm return sSiteURL; 7*
[ } IZGRQmi" //RD$e?h~ t*)!BZ public void setSSiteURL(String value) y.-Kqa~ { c|K:oi,z sSiteURL = value; "xnULQK } Xkk 8#Y": E^0a; |B[ =\mJ5v"hA public String getSFilePath() TM|PwY { ?<S fhjU return sFilePath; [Zzztn+ } SM1L^M3) qlnA7cK! O<ybiPR public void setSFilePath(String value) }
7ND]y48 { c^&4m[?C[u sFilePath = value; ~SmFDg$/m } xu{VU^'Y fWb+08}C ^Pah\p4bj public String getSFileName() +~= j3U { 4P"XT return sFileName; itg"dGDk } C XNYWx -wf>N: MTq/ public void setSFileName(String value) rU(-R@[" { l%p,m[ sFileName = value; #N%j9 } EB@rIvUi, KT7R0 v .*X=["
F public int getNSplitter() c]i;0j? Dl { IkG;j+= return nSplitter; Vol}wc } ,`YIcrya: Z$B%V t Ypxp4B public void setNSplitter(int nCount) +1@'2w{ { ;.b^&h nSplitter = nCount; &aa3BgxyE } -%Rbd0gVH\ } awjAv8tPO!
}Oqt=Wm kB%.i%9\\ /* hc|#JS2H@y **Utility.java fn.;C */ ~N7;.
3 7 package NetFox; AX{7].)F U9*< dR &0H_W xKeB public class Utility { ;*ni%|K Wyow MFp S<-5<Pg public Utility() 9}L2$^#,NA { 3}fhU{-c G}LV"0? b|;h$otC } PHUeN]s#
A;*< //线程睡眠 ~Nf|,{[(5 public static void sleep(int nSecond) IYHNN { 2+b}FVOe\ try{ >>"@0tO Thread.sleep(nSecond); L"NfOST3'R } >yVp1Se catch(Exception e) cYXL3)p*Q { bUds E1f e.printStackTrace (); B=7maYeU } cV_-Bcb } wAJ=rRI )]4=anJu@| //日志 u^#e7u public static void log(String sMsg) ZHlHnUo { ~B?Wg! System.err.println(sMsg); 2$`Y 4b 3t } zL3zvOhu} K4+|K:e 71ab&V il public static void log(int sMsg) b'z\|jY { XHOS"o$y System.err.println(sMsg); l N0u1)'2 } 8R-;cBT } 5uOz #hN mdo$d-d& 4sW~7:vU /* cMoJHC,! **TestMethod.java -t>"s'kv */ ]0[ot$Da6 package NetFox; %iJ}H6m
ls7P$qq ^zS;/% public class TestMethod { Bu+?N%CBi L6;'V5Mg72 LGVy4D public TestMethod() wZW\r!Us { ///xx/weblogic60b2_win.exe F?0Q AA try{ ckv8QAm SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); [tElt4uG //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); >"|t*kS SiteFileFetch fileFetch = new SiteFileFetch(bean); tmM; Z(9t fileFetch.start(); Y> ATL } 3-)}.8F catch(Exception e){e.printStackTrace ();} uPxjW"M+
U0srwt97S &\Lu}t7Ru } ZLPj1L c@)?V>oe &%8IBT public static void main(String[] args) }$r]\v { ;:+2.// new TestMethod(); n}fV$qu } yy&L& |