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/* 4.RG4Jq **SiteFileFetch.java m*X[ Jtr */ 'B0{U4?
package NetFox; |w}xl'>q import java.io.*; _tr<}PnZ import java.net.*; U}SXJH&&E a(]`F(L XBQ\_2> public class SiteFileFetch extends Thread { #"fJa:IYG7 d2s OYCKe g]UBZ33y SiteInfoBean siteInfoBean = null; //文件信息Bean ^TB>.c@ `* long[] nStartPos; //开始位置 Q
!qrNa6 long[] nEndPos; //结束位置 B^D(5 FileSplitterFetch[] fileSplitterFetch; //子线程对象 ^KB~*'DN~s long nFileLength; //文件长度 P6,7]6bp boolean bFirst = true; //是否第一次取文件 )5fQ$<(Z boolean bStop = false; //停止标志 HyiFy7j File tmpFile; //文件下载的临时信息 .}')f;jH5< DataOutputStream output; //输出到文件的输出流 b%f[p/no kX:tc //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) n]+W 3[i public SiteFileFetch(SiteInfoBean bean) throws IOException )rLMIk { .yENM[-bQ siteInfoBean = bean; G#Ou[*O' //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); |lH;Fq{\ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); !QmzrX}h if(tmpFile.exists ()) qW 1V85FG { G,= yc@uq bFirst = false; p
(FlR?= S read_nPos(); k#bu#YZk }
wiX ~D
else 9{j66 { ,%bhyww< nStartPos = new long[bean.getNSplitter()]; U=sh[W nEndPos = new long[bean.getNSplitter()]; i~J;G#b } YGc^h(d ?t@v&s h;lirvO| W\f9jfD } avp;*G} dMx4ykrR ydv3owN public void run() 7nzGAz_W { M9!AIHq4 //获得文件长度 *sQcg8{^ //分割文件 _B2V "p //实例FileSplitterFetch ;jK#[*y //启动FileSplitterFetch线程 T2?HRx //等待子线程返回 E99CmG|" try{ 2S`?hxAL if(bFirst) 1G~S|,8p { *s}|Hy nFileLength = getFileSize(); o
A*G if(nFileLength == -1) ?j7vZ}iRi { Rd+P,PO System.err.println("File Length is not known!"); +a=
0\lpOy } 7:=5"ScV else if(nFileLength == -2) O$`UCq { x}$e}8|8YL System.err.println("File is not access!"); *p ? e.%nd } }W)=@t else Q Z8QQ`*S { 6)]f6p&e for(int i=0;i<nStartPos.length;i++) f]~c)P
Cs { }wSi~^* nStartPos = (long)(i*(nFileLength/nStartPos.length)); h!&sNzX } &K^MNd for(int i=0;i<nEndPos.length-1;i++) `P+(&taT { R4%P:qM nEndPos = nStartPos[i+1]; 9+Y D!y } 5H,G- nEndPos[nEndPos.length-1] = nFileLength; :<#`_K~' } gM;}#>6 } XM
Vq-8B0 [AEBF2OIv o7&4G$FX~ //启动子线程 BdbJ< Is fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; FqA3{ for(int i=0;i<nStartPos.length;i++) D
y6$J3 r { N$?cX(|7 fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), (g :p5Rl siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), M/V(5IoP( nStartPos,nEndPos,i); $mco0%$ Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); zvv:dC/p< fileSplitterFetch.start(); )He#K+[}^4 } fm1X1T . // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), %R0v5=2' siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); qUhRu>
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", .
,NB( s` nEndPos = " + nFileLength); KiLvI,9y // fileSplitterFetch[nPos.length-1].start(); z)F#u:t 1H:ea7YVU oL/o*^ //等待子线程结束 c-XLI //int count = 0; FYPz 4K //是否结束while循环 E(+T* boolean breakWhile = false; 4YbC(f e/e0d<(1 dhRJg"vrQ while(!bStop) `0BdMKjA { a
ib}`l write_nPos(); ^[h2% c$ Utility.sleep(500); 2xmk,&s breakWhile = true; (0*v*kYdL+ nYv#4* ^6 /j_G for(int i=0;i<nStartPos.length;i++) ;np_%?is { i8V0Ty4~N if(!fileSplitterFetch.bDownOver) ]S8LY.Az5 { CKARg8o breakWhile = false; 6i@ub%qq break; ` DCU>bt&R } 0V11# } >?XbU} if(breakWhile) o0;7b>Tv break; eFQQW`J [J\DB)V/ +h[e0J|v{ //count++; p?rK`$U+J //if(count>4) cV$lobqO // siteStop(); L@|#Bbmx } R $b,h $"fo^?d/s @vH2Vydu System.err.println("文件下载结束!"); \v`#|lT$ } ^/KfH&E catch(Exception e){e.printStackTrace ();} `\FI7s3b } . A<sr +80 2`eax LZWS^77 //获得文件长度 |Mg }2!/L public long getFileSize() 6zYaA { O.:I,D&] int nFileLength = -1; D?u` try{ SfI*bJo>V URL url = new URL(siteInfoBean.getSSiteURL()); cqQRU HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); GfsBQY/ httpConnection.setRequestProperty("User-Agent","NetFox"); *m_93J dXP6"V@iI 9={N4}< int responseCode=httpConnection.getResponseCode(); >iy^$bqF if(responseCode>=400) Fe="EDh { ?R?Grw)`H processErrorCode(responseCode); r=csi return -2; //-2 represent access is error A o3HX } i>Iee^_( gg8c7d:Q GJak.,0t String sHeader; .)ST[G]WK 1)U}i ^ F!CAitxd for(int i=1;;i++) qc0 B<,x7 { atnQC //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); ('WY5Yps //Utility.log(in.readLine()); D9^7m
j?e sHeader=httpConnection.getHeaderFieldKey(i); oeNzHp_ if(sHeader!=null) #\b ;2> { a>b8-j=J if(sHeader.equals("Content-Length")) [-VGArD[k, { Qq0O0U nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); E/"SU*Co break; ``-k{C#F } ;QidDi_s> } IxP^i{/1? else t-lv|%+8 break; uYTCd ZQh } #{>uC&jD } eUs-5
L catch(IOException e){e.printStackTrace ();} 4$i} Xk#3 catch(Exception e){e.printStackTrace ();} 56ZrCr t&f" jPu> cj^bh Utility.log(nFileLength); FQ## 397 Doj(.wm~ 6h@+?{F. return nFileLength; j)Lo'&Y~= } JjDS"hK# JX&~y.F ^N{X " //保存下载信息(文件指针位置) >t,O2~ private void write_nPos() @H4wHlb { ^?sSx!:bZ try{ 0x4l5x$8 output = new DataOutputStream(new FileOutputStream(tmpFile)); bZXlJa`'S output.writeInt(nStartPos.length); =SL^>HS.fo for(int i=0;i<nStartPos.length;i++) f\=6I3z { uH]
m]t // output.writeLong(nPos); 9/Wn!Ld output.writeLong(fileSplitterFetch.nStartPos); w<mqe0 output.writeLong(fileSplitterFetch.nEndPos); ax]9QrA } /'"R Mq output.close(); .> ,Z kS } (l2<+R%1 catch(IOException e){e.printStackTrace ();} rxArTpS{.# catch(Exception e){e.printStackTrace ();} p`LL } oo'iwq-\ 'Dq"e$JM< -rRz@Cr //读取保存的下载信息(文件指针位置) _UaPwJ private void read_nPos() Pd,!& { P8u"T!G try{ 65t[vi*C DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); g.=!3e&z% int nCount = input.readInt(); I'P.K| "R nStartPos = new long[nCount]; qWkx:-g] nEndPos = new long[nCount]; .;j"+Ef for(int i=0;i<nStartPos.length;i++) >7W"giWP { #W.bZ]&WA nStartPos = input.readLong(); 5%#i79z&B nEndPos = input.readLong(); {6DpPw^ " } s?HsUD$b input.close(); WE7>?H*Ro } U<|B7t4M catch(IOException e){e.printStackTrace ();} VgUvD1v?} catch(Exception e){e.printStackTrace ();} @!Y.935/0 } cx<h_ Mru~<:9 MR[N6E6Mg private void processErrorCode(int nErrorCode) [CsM<:C { ;\1b{-' l System.err.println("Error Code : " + nErrorCode); + I?Qg } >&g2 IvDS *pY/5? g j`Tm\!q //停止文件下载 Y{`3`Pg&N public void siteStop() s-fKh` { F1zT )wW bStop = true; $]xE$dzJ for(int i=0;i<nStartPos.length;i++) 1mAUEQ! fileSplitterFetch.splitterStop(); 3{I=.mUUm F%9e@{ e?|d9;BO } 7O]J^H+7 } RT1{+:l //负责部分文件的抓取 -wJ **FileSplitterFetch.java j'#)~>b */ D<lQoO+ package NetFox; xq8}6Q jt0H5-x nYo&x' import java.io.*; &E} I import java.net.*; '
}y]mFpF XL{{7%j )*"T public class FileSplitterFetch extends Thread { 6tDg3`w> };4pZceV `M towXj String sURL; //File URL $K5ni {M; long nStartPos; //File Snippet Start Position @'6S[zU long nEndPos; //File Snippet End Position gK&5HTo int nThreadID; //Thread's ID \HBVNBY boolean bDownOver = false; //Downing is over N[- %0 boolean bStop = false; //Stop identical ){?mKB5 FileAccessI fileAccessI = null; //File Access interface ]Om'naD Q"x`+?! |?4~T: public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException .aVHd<M { !y[}| this.sURL = sURL; S,ouj;B this.nStartPos = nStart; d m/-} this.nEndPos = nEnd; a>-}\GXTA nThreadID = id;
hg<"Yg= fileAccessI = new FileAccessI(sName,nStartPos);//定位 (**-"o]HH } cKvAR5| w!=_ 7UeE(=Hr5 public void run() bn^mL~ { c+)36/; X while(nStartPos < nEndPos && !bStop) "t3uW6& { AQJ|^'% B;Q`vKY j\i;'t}8g try{ yBXkN&1=%; URL url = new URL(sURL); A1#4nkkc9 HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); !3b|*].B httpConnection.setRequestProperty("User-Agent","NetFox"); W07-JHV% String sProperty = "bytes="+nStartPos+"-"; yH0yO*RZ httpConnection.setRequestProperty("RANGE",sProperty); i{1)=_$Vt` Utility.log(sProperty); iMOPD}`IX k8Su/U 8M".o n InputStream input = httpConnection.getInputStream(); i4{ / //logResponseHead(httpConnection); {Kq*5Aq8 pUCEYR #2ZrdD"5kQ byte[] b = new byte[1024]; EA%#/n int nRead; Sh~ 8jEk while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 9}'l=b:Jms { 5~ *'>y nStartPos += fileAccessI.write(b,0,nRead); /jK17}j //if(nThreadID == 1) flm,r<*} // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); }R(0[0NQe- } ;ZE<6;#3IP fmZzBZ_ b6?Xo/lJ. Utility.log("Thread " + nThreadID + " is over!"); jiw`i bDownOver = true; b& _i/n( //nPos = fileAccessI.write (b,0,nRead); gs`27Gih } a-UD_|! catch(Exception e){e.printStackTrace ();} Bcd0 } |aOnV,} } {8>_,z^P) Js^r]=\F' q)z1</B- //打印回应的头信息 +"N<- public void logResponseHead(HttpURLConnection con) C7fi1~ { wZ\e3H z for(int i=1;;i++) wzLiVe- { &s6(3k String header=con.getHeaderFieldKey(i); Fm[?@Z&wP if(header!=null) 46.q anh //responseHeaders.put(header,httpConnection.getHeaderField(header)); e)
/u>I Utility.log(header+" : "+con.getHeaderField(header)); B#Oc8`1Y else Lu#@~ break; /="D]K)%b8 } /S=;DxZ,r } 6&xW9' 6b: s_Ge22BZ 7]HIE]# public void splitterStop() 'k(~XA}X: { C}DG'z9 bStop = true; TF}4X;3Dsy } KSpC%_LC w]+BBGYQKb J!^~KN6[ }
"ppb%= nD?M;XN <J_,9&\J /* A](}"Pi!n **FileAccess.java JXR/K=<^ *//文件访问(定位,写) !^"!fuoNC package NetFox; /o06h y import java.io.*; K&a]pL6D 'y@ 2,9v f!R^;'a public class FileAccessI implements Serializable{ %RD7=Z-z '>WuukC //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 @v-)|8GdY RandomAccessFile oSavedFile; 3b[[2x_UU long nPos; u{lDof> 4;~lpty Qc
=lf$ public FileAccessI() throws IOException /dvnQW4}8 { `R=_t]ie this("",0); GHsdLe=t0# } ujHzG}2z >p#d;wK4_ eRqexqO! public FileAccessI(String sName,long nPos) throws IOException DBh/V#* D { kE(-vE9 oSavedFile = new RandomAccessFile(sName,"rw"); j]F3[gpc this.nPos = nPos; mM^8YL oSavedFile.seek(nPos); U!UX"r } A5H8+gATK wTuRo
J lG^nT public synchronized int write(byte[] b,int nStart,int nLen) ^A$XXH' { Sw9mrhzJfe int n = -1; 7z0uj try{ o6yZ@R oSavedFile.write(b,nStart,nLen); FZ.Yn n = nLen; D@1^:'$V } `0vy+T5 catch(IOException e) yT9RNo/w { v@1Jhns e.printStackTrace (); T`0gtSS } qf&{O:,Z q@yabuN@,j <u%e* return n; M#<fh:> } lSv;wwEg cx%9UK*c *1]k&#s } %iFIY=W >N"PLSY1 !x /Z" /* HSFf&|qqx **SiteInfoBean.java -.3k
vL */ <g1hdF0 package NetFox; *wyLX9{: fszeJS}Dw qCT\rZU public class SiteInfoBean { /3%xQK>% jmVy4* P_ jJC((1| private String sSiteURL; //Site's URL TTak[e&j3 private String sFilePath; //Saved File's Path nezbmpL4 private String sFileName; //Saved File's Name 9 9BK/>R private int nSplitter; //Count of Splited Downloading File ]KT,s]. 7}85o
J 3`8xh9O public SiteInfoBean() HBGA
lZ {//nSplitter的缺省值为5 LZ dNG\- //default value of nSplitter is 5 hvZR4|k> this("","","",5); @x
]^blq } Qn&^.e9I }f*S 9V bd;f@)X public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) Bq`kVfx { sUMn
(@r sSiteURL= sURL; ay[*b_f sFilePath = sPath; Lwk- sFileName = sName; @b({QM| this.nSplitter = nSpiltter; S*:w\nXP~ POs~xaZ`H p8J"%Jq} } ,KaWP *&MkkI# 6GvnyJ{[ public String getSSiteURL() wB"Gw` D { ZK*aVYnu return sSiteURL; JFdzA } x*V<afLY[ [GM<Wt0 O,#[m:Ejb public void setSSiteURL(String value) rNp#5[e { ??Ac=K\ sSiteURL = value; yK3z3"1M? } F
tjm@:X i(rY'o2 BN ^123.Ru|t public String getSFilePath() *h6i9V%' { PD4E&k return sFilePath; LcF3P
4 } }FVX5/.' g.s oNqt= &.B6P|N' public void setSFilePath(String value) F{tSfKy2 { p7er04/}\ sFilePath = value; BZ9iy~ } "dTXT ~yN,F pD {c;3$ public String getSFileName() dW68lVWq_ { ]+P&Y: return sFileName; Zlo,#q } =oJiNM5_u xkovoTzV R3A^VE;qP public void setSFileName(String value) 7/L7L5h< { -&}E:zoe
sFileName = value; %\0 Y1!Hw } v'tk:Hm1 ri
~2t3gg M-Bw9`#Jw public int getNSplitter() CgC wM=!r { mZyTo/\0 return nSplitter; E12k1gC` } D2bUSRrb HJm O+ R8l9i2 public void setNSplitter(int nCount) xJCpWU3wM { xTT>3Fj nSplitter = nCount; xFZq6si? } s? Kn,6Y } }T,uw8?f! CggEAi~ O;2 u1p'iP /* b3+PC$z2h **Utility.java S6]': */ 1oPT8)[U package NetFox; >q`X%&l_ "dOzQz*E eAMT7 2_ public class Utility { zKNk(/y `Nj|}^A )T?ryp3ev public Utility() KXJHb{? { k&b>-QP6 ~
4aaJ0 Lg1Usy% } ,tZwXP{ )c/]
8KU //线程睡眠 @_{"ho public static void sleep(int nSecond) $4&Ql { `c(@WK4 try{ rzu^br9X Thread.sleep(nSecond); ;QYK {3R? } q)*0G* catch(Exception e) ArY'NE\Htt { Z>l>@wN m e.printStackTrace (); L6^h3*JyD } s6B@:9 } Ty=}A MMyE kbY@Y,:w //日志 [C$ 0HW public static void log(String sMsg) #_d%hr~d { }1V&(#H2 System.err.println(sMsg); |($pXVLH` } +-hmITJv ?D_zAh?pW DjIs"5Iei public static void log(int sMsg) x>^S..K}L% { Gsb]e System.err.println(sMsg); {8' 5 } ' vwBG=9C } 6{M.S}.^ iaB5t<t1r t`Sh!e /* U&6f}=vC **TestMethod.java :|a[6Uwl\V */ ydt1ED0Q- package NetFox; QU t!fF@t 3r\QLIr L8 ZU`"^FQ3A public class TestMethod { W>~V?%F&' X\;y;pmRH P.o W#Je public TestMethod() .eE5pyw+C { ///xx/weblogic60b2_win.exe $)U
RY~;i try{ gnQd#` SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); STI8[e7{ //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); 4T:ZEvdzf SiteFileFetch fileFetch = new SiteFileFetch(bean); 4Xz|HU? fileFetch.start(); <*[(t;i } 'Gk|&^ catch(Exception e){e.printStackTrace ();} D<MtLwH \21!NPXH2 "k.<" pf } jzQgDed ] d^7<l_u~ ! !Ej<J&e public static void main(String[] args) Rh=h{O { {?8rvAjY new TestMethod(); ?^dyQhb } 9:1ZL_yf } S7bSR?~L[ 点击下载更多相关资料
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