-
UID:2537
-
- 注册时间2006-05-09
- 最后登录2020-05-29
- 在线时间3小时
-
- 发帖8
- 搜Ta的帖子
- 精华
0
- 铜板1641
- 人品值95
- 贡献值0
- 交易币0
- 好评度8
- 信誉值0
- 金币0
-
访问TA的空间加好友用道具
- 发帖
- 8
- 铜板
- 1641
- 人品值
- 95
- 贡献值
- 0
- 交易币
- 0
- 好评度
- 8
- 信誉值
- 0
- 金币
- 0
- 所在楼道
|
/* 7])cu>/ **SiteFileFetch.java o 94]:$=~ */ 9 rMP"td package NetFox; <[oPh(!V import java.io.*; ycD}7 import java.net.*; 51)Q&,Mo# "mk4O4dF $-=QT X public class SiteFileFetch extends Thread { TJ5g?#Wul 7CGxM ^zfO=XN SiteInfoBean siteInfoBean = null; //文件信息Bean l%f&vOcd long[] nStartPos; //开始位置 G\;a_]Q long[] nEndPos; //结束位置 ytDp
4x<W) FileSplitterFetch[] fileSplitterFetch; //子线程对象 76} a long nFileLength; //文件长度 `R\nw)xq boolean bFirst = true; //是否第一次取文件 Miw*L;u@W boolean bStop = false; //停止标志 +=N!37+G File tmpFile; //文件下载的临时信息 ask76
e DataOutputStream output; //输出到文件的输出流 5PRS|R7 NCXr$ES{ //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 2w7PwNb*32 public SiteFileFetch(SiteInfoBean bean) throws IOException DHnO ," { ^&Exa6=*FT siteInfoBean = bean; +H4H$H //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); N Dqvt$ tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); C4].egVg if(tmpFile.exists ()) 2!Gb4V { O^2@9
w bFirst = false; /uNgftj read_nPos(); lQq&tz, } Eq\PSa=gz else y-1!@|l0:6 { J^Mq4& nStartPos = new long[bean.getNSplitter()]; K<g<xW* X nEndPos = new long[bean.getNSplitter()]; Ch;wvoy } \-h%z%{R 'f
"KV| HtN!Hgpwg K8R}2K-Y } l_MF9.z& </jzM?i zZhA]J public void run() Nr(t5TP^ { YWK|AT-4 //获得文件长度 2X)n.%4g$; //分割文件 2BGS$$pP //实例FileSplitterFetch er%D`VHe //启动FileSplitterFetch线程 )o;oOPT! //等待子线程返回 `zw^ WbCO{ try{ X%sMna) if(bFirst) 6!;eJYj, { *URBx"5XZ nFileLength = getFileSize(); l`wF;W! if(nFileLength == -1) RP9jZRDbZ { 5Xr<~xr System.err.println("File Length is not known!"); ^DQp9$la } A#@9|3 else if(nFileLength == -2) !,0%ZG}]7 { q\r@x-&g+ System.err.println("File is not access!"); qx;8Hq(E[ } |u@/,x/t else ->rr4xaK C { t!285J8tn for(int i=0;i<nStartPos.length;i++) kgZiyPcw { c(j|xQ\pE nStartPos = (long)(i*(nFileLength/nStartPos.length)); ox&PFI0Gn } 937 z*mh for(int i=0;i<nEndPos.length-1;i++) Ht,dMt>: { hh1 ?/ nEndPos = nStartPos[i+1]; |l#<vw
wE } \$B%TY nEndPos[nEndPos.length-1] = nFileLength; yd>b2 M } ih[!v"bv } OBm#E} 4]P5k6nV cOz/zD
f5 //启动子线程 !VoAN5#; fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; R2`-*PZ_ for(int i=0;i<nStartPos.length;i++) (]}52%~ { ]aDU* tk fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ?\.DG`Zxc siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), D00v"yp%% nStartPos,nEndPos,i); zcrM3`Zh Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); #JD:i% fileSplitterFetch.start(); oj'a%mx } a:V2(nY // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), 2Vwv#NAV k siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); 1!P\x=Nn_ // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", IBn+42V nEndPos = " + nFileLength); Hdxon@,+cd // fileSplitterFetch[nPos.length-1].start(); jY|fP!?[ <{Pr(U*7} 7J6D wh{ //等待子线程结束 m(0c|- //int count = 0; dR|*VT\ //是否结束while循环 -
fx?@ boolean breakWhile = false; Gdu5
&]H#6 )a=58r07 Ix59(g while(!bStop) tSf$`4 { :g~X"C1s write_nPos(); TaqqEL Utility.sleep(500); DKnlbl1^? breakWhile = true; rQLl[a [~v1
CUI\:a- for(int i=0;i<nStartPos.length;i++) K4w#}gzok { +f"q^R IU if(!fileSplitterFetch.bDownOver) 6M^NZ0~J { _B6W:k|-7l breakWhile = false; iU1yJ= break; /9o
gg } hziPHuK9, } vvwQ/iJO4Q if(breakWhile) \nbGdka break; "+sl(A3`U ,CED% p2I9t| //count++; P~^VLnw //if(count>4) Iss)7I // siteStop(); WV?3DzeR } 0vjlSHS;`. q?0&&"T} =&,<Co1 hF System.err.println("文件下载结束!"); +aoenUm5 } ?"Ec#,~ catch(Exception e){e.printStackTrace ();} 5fjL } 98ot{+/LK -`s_md0BM PO@b9O //获得文件长度 J`d_=C?J public long getFileSize() ah2L8jN" { BTAt9Z8qK int nFileLength = -1; 3vC"Q!J& try{ (
C~ u. URL url = new URL(siteInfoBean.getSSiteURL()); kes
GwMr"e HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); {4^NZTjd@ httpConnection.setRequestProperty("User-Agent","NetFox"); , #nYH D j#rj_ uP m3']/}xHO int responseCode=httpConnection.getResponseCode(); x;@wtd*QB if(responseCode>=400) !l|fzS8g { *u ^m f~ processErrorCode(responseCode); 'i;/?'!W6 return -2; //-2 represent access is error De^Uc } #O,;3S AA &>6JB{ I3^}$#> String sHeader; \C &V)/ ;^f ;<
HE{JiAf for(int i=1;;i++) <.knM { B }t529Z //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); nAT,y9& //Utility.log(in.readLine()); X"EZpJ'W sHeader=httpConnection.getHeaderFieldKey(i); L )53o! if(sHeader!=null) C;\R
62' { ^hRx{A if(sHeader.equals("Content-Length")) M;j)F { 7wz9x8 \t nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); khQ@DwO*\= break; (8td0zq
}
\<u } p?V@P6h else `_+% break; ^|UD&6 dx } 8s9ZY4_ } 9$s~ `z) catch(IOException e){e.printStackTrace ();} sL4j@Lt catch(Exception e){e.printStackTrace ();} Y{I,ipU. M{4U%lk wO&+Bb\= Utility.log(nFileLength); m"f3hd4D_q :-tMH02c `DS7J\c$ return nFileLength; 1"S~#
} oxNQNJ!X RMs+pN<5 +5"Pm]oRbx //保存下载信息(文件指针位置) :6jh*,OHZl private void write_nPos() 5kLz8n^z@@ { a\B'Qe+ try{ E RjMe'q4 output = new DataOutputStream(new FileOutputStream(tmpFile)); k"F \4M output.writeInt(nStartPos.length); p+#]Jr for(int i=0;i<nStartPos.length;i++) S0w:R:q}L { o@[oI\Vr! // output.writeLong(nPos); cD ?'lB- output.writeLong(fileSplitterFetch.nStartPos); fk2p} output.writeLong(fileSplitterFetch.nEndPos); ows3% } +}x\|O output.close(); O39f } N
oRPvFv catch(IOException e){e.printStackTrace ();} fL~@v-l#~ catch(Exception e){e.printStackTrace ();} Sb.%B^O } 0b}.!k9 *h
M5pw PVaqKCj:6W //读取保存的下载信息(文件指针位置) 5S
4Bz private void read_nPos() 88On{Kk.v { 9xOTR#B:_V try{ }v6@yU DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); Zg$RiQ^-{J int nCount = input.readInt(); \p#_D|s/Ep nStartPos = new long[nCount]; ~oz??SX nEndPos = new long[nCount]; 3c+ps;nh for(int i=0;i<nStartPos.length;i++) Ejj+%)n. { QxT\_Nej*n nStartPos = input.readLong(); oVQbc\P3 nEndPos = input.readLong(); >';UF;\5]Q } 9`tSg!YOh input.close(); +1nzyD_E } W
H%EC$ catch(IOException e){e.printStackTrace ();} GL,( N| catch(Exception e){e.printStackTrace ();} e=`=7H4P } IL{tm0$r !3)WW)"!r t!\B6!Fo private void processErrorCode(int nErrorCode) &3 *#h { r"!xI System.err.println("Error Code : " + nErrorCode); ;r}yeISf } sBa&]9>m @?*;
-]#) ^$s&bH'8 //停止文件下载 e2kW,JV/<$ public void siteStop() }H:wgy` { LZDJ\"a- bStop = true; Y)2#\ F for(int i=0;i<nStartPos.length;i++) (_=R<: fileSplitterFetch.splitterStop(); r7FpR! "R]wPF5u 1D1qOg"LE } fZb}- } Gn^m 541 //负责部分文件的抓取 X#tCIyK,nV **FileSplitterFetch.java JHa\"h */ &qP0-x) package NetFox; bnZ H [l}H%S x/0loW?q^ import java.io.*; t==\D?Rt import java.net.*; S0`u!l89( VIg6' |nBs(>b public class FileSplitterFetch extends Thread { U |Uc|6 \_x~lRqJJ 54#P String sURL; //File URL FuC\qF
long nStartPos; //File Snippet Start Position xdh%mG:? long nEndPos; //File Snippet End Position \027>~u
{ int nThreadID; //Thread's ID Py#TXzEcC boolean bDownOver = false; //Downing is over 9Dp0Pi?29 boolean bStop = false; //Stop identical SqZ .}s FileAccessI fileAccessI = null; //File Access interface &gcZ4gpH 4 %V9 gv){&=9/
public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException _'l"Dk { Ol;DJV this.sURL = sURL; xnHB
<xrE} this.nStartPos = nStart; 5\}E4y this.nEndPos = nEnd; g3
Oro}wt6 nThreadID = id; ={;7WB$ fileAccessI = new FileAccessI(sName,nStartPos);//定位 L{oG'aK4 } &ET$ca`j# -us:!p1T [5]n,toAh public void run() /=g/{&3[a> { -Jt36|O while(nStartPos < nEndPos && !bStop) Z!3R { 8nwps(3 <[K3Prf C @`ii3&W4 try{ Dus!Ki~8(t URL url = new URL(sURL); 0lV;bVa% HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l,Fn_zO httpConnection.setRequestProperty("User-Agent","NetFox"); fL*+[v4 String sProperty = "bytes="+nStartPos+"-"; I%NeCd httpConnection.setRequestProperty("RANGE",sProperty); SgssNv Utility.log(sProperty); a#lytp rBOH9L gq@8Z
AWn InputStream input = httpConnection.getInputStream(); 2@IL
n+# //logResponseHead(httpConnection); %cBOi_}}~ iNc!zA4 N6`U)=2o>h byte[] b = new byte[1024]; hM[3l1o{| int nRead; *qu5o5Q while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) bGkLa/?S { #M4LG; B nStartPos += fileAccessI.write(b,0,nRead); #lc6-K# //if(nThreadID == 1) =zu;npM // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); `"hWbmQ } Kv)} Fv$A%6;W '$rCV,3q Utility.log("Thread " + nThreadID + " is over!"); {+GR/l\!# bDownOver = true; EM`'=<)V //nPos = fileAccessI.write (b,0,nRead); K-@\";whF } "$D'gSoYe catch(Exception e){e.printStackTrace ();} 'Lw8l `7 } mn\A)RQ } Gpi_p ,Xr`tQ<@ b I`JG:^b //打印回应的头信息 bZr,jLEf public void logResponseHead(HttpURLConnection con) ?1zGs2Qs { ^;F5ymb3U for(int i=1;;i++) +25=u|#4r { G"tlJ7$myQ String header=con.getHeaderFieldKey(i); V.6pfL if(header!=null) 8I Ip,#%v //responseHeaders.put(header,httpConnection.getHeaderField(header)); v??$z#1F3 Utility.log(header+" : "+con.getHeaderField(header)); hn\d{HP else h-RhmQA=Iz break; Sk)lT^by } R$66F>Jz^ } xR8.1T?8 <EcxNj1 D_1O4/ public void splitterStop() Ji:<eRx) { 9_?e, Q bStop = true; Go^TTL } h&n1}W+ s~bi#U;dF t\a|Gp W } p&5>j\uJ1& y/kB`Z(Yj 0igB pHS /* qVI0?B
x **FileAccess.java =9W\;xE S *//文件访问(定位,写) rV4K@)~ package NetFox; sH_,P import java.io.*; 3~V. 2Q\\l @b\ $zU%?[J public class FileAccessI implements Serializable{ e$2P/6k> O1)\!=&
. //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 vU5}E\Ny RandomAccessFile oSavedFile; (CgvI*O long nPos; bar=^V) 8ZqLGa] A_WaRYG public FileAccessI() throws IOException F3]VSI6^E, { Lq1?Y
this("",0); K#AexA } &:IcwD& E/*&'Osq cIG7Q"4 public FileAccessI(String sName,long nPos) throws IOException "a}fwg9Y { z6rT<~xZtu oSavedFile = new RandomAccessFile(sName,"rw"); i;s;:{cn this.nPos = nPos; Pr(@&:v: oSavedFile.seek(nPos); {
PJ>gX$ }
Gk/cP` HZ2W`wo {:#nrD" public synchronized int write(byte[] b,int nStart,int nLen) >iRkhA=Vg { 3-, W?
"aC int n = -1; s@5~HyeI try{ iP;"-Mj oSavedFile.write(b,nStart,nLen); )p1~Jx( \ n = nLen; y Vm>Pj6 } X{Hh^H catch(IOException e) XZM@Rys { ;gSRpTS: e.printStackTrace (); y1T(R# } g>;@(:e^/ w=n(2M56C J 7 G-qF\ return n; tq3Rc}
} %>_6&A{K,d %=Z/Frd j*Pq<[~ } MpGG}J[y j7Ts&;`[* rUmP_ /* FMI1[|:; **SiteInfoBean.java lw[c+F7 */ FKu8R%9xn% package NetFox; ed}#S~4q
dFDf/tH i}P{{kMJ public class SiteInfoBean { ;RX u}pd v=0G&x=/ 3Jlap=]68S private String sSiteURL; //Site's URL 4oueLT(zc private String sFilePath; //Saved File's Path O!{YwE8x9 private String sFileName; //Saved File's Name V+y"L>K private int nSplitter; //Count of Splited Downloading File Up'#OkTx {7@*cBqN s</qT6@ public SiteInfoBean() z F.@rXl {//nSplitter的缺省值为5 {GLGDEb //default value of nSplitter is 5 jBOl:l,+ this("","","",5); h=:/9O{H } b=_k)h+l eh `%E0b} %K-8DL8|( public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) '&B4Ccn<V { \yFUQq: sSiteURL= sURL; wW1\{<hgr sFilePath = sPath; 4C%pKV sFileName = sName; <Nqbp this.nSplitter = nSpiltter; {.jW"0U )y;7\-K0 _/noWwVu } O0xqA\ 2M'dTXz I4?oBq public String getSSiteURL() /\h*v!: { ktx| c19 return sSiteURL; D_0Vu/v } /OzoeIt =3w;<1 ?'
9 %4:eTcp public void setSSiteURL(String value) ;tZQ9#S { ^PezV5( sSiteURL = value; y^`JWs, } Y.]$T8 X_hDU~5{wC !Kg']4 public String getSFilePath() ?\, ^>4x? { usD@4!PoA return sFilePath; -Z$u[L [c } aE9Y
|6 =!^
gQ0~4 QO(F%&v++ public void setSFilePath(String value) !p/?IW+ { ?`rAO#1 sFilePath = value; VDbbA\ } v#/Gxk9eX @|c]) QR'# ]k;>% public String getSFileName() w"s@q$}]8M { FZj>N( return sFileName; k-=LD } aW&)3C2-x II}M|qHaK 5HV+7zU5 public void setSFileName(String value) ,_RNZ
sa;& { %csrNf sFileName = value; Dz6xx? } 3yKmuu! rFQWgWD n@p@@ public int getNSplitter() ={zTQ+7S` { 3EICdC
return nSplitter; ^.!jD+=I } hyf
;f7`o ]>VG}e~b >- \bLr public void setNSplitter(int nCount) ")STB8kQ { nwUz}em?O nSplitter = nCount; q_h (D/g } V&s|I oTR } za@/4z uwSSrT 0>N6.itOz /* J4"Fj, FS **Utility.java fyb;*hgu */ MkPQ@so package NetFox; KddCR& kY~4AH j/*1zu8Y public class Utility { *b.
> nJ2x;';lA g=56|G7n public Utility() i#`q<+/q { \H@1VgmR; c_D(%Vf5 _b~{/[s } aLGq<6Ja Lr$Mk#'B //线程睡眠 {4G/HW28 public static void sleep(int nSecond)
K%? g6j { Ptv'.<- try{ T+F]hv' Thread.sleep(nSecond); 0\= du } Tn#Co$< catch(Exception e) p2i?)+z { {}$7B p e.printStackTrace (); EyE#x_A } Z_\p8@3aH } MVsFi]- akzGJ3g //日志 4\Y5RfLB_ public static void log(String sMsg) 0+* NHiH { pi?MAE*f System.err.println(sMsg); GT&}Burl/n } -V|"T+U %'=*utOxy zXn-E public static void log(int sMsg) PC#^L$cg} { #_wq#rF System.err.println(sMsg); $ s/E}X } >5t%_/yeB } xV)[C )6 AAevN3a#nI vt|R)[, /* g4[VgmhJ **TestMethod.java !wfW0?eu */ ##7y|AwK package NetFox; GkIY2PD N7+L@CC6T 6QX m]<
public class TestMethod { `OBzOM YNEwX$)M,B JNfL
jfE)< public TestMethod() ) CP { ///xx/weblogic60b2_win.exe cQU;PH] try{ \!-BR0+y; SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); "+F'WCJ-(* //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); EO&Q SiteFileFetch fileFetch = new SiteFileFetch(bean); "]+g5G fileFetch.start(); JL1ajlm~ } WEimJrAn catch(Exception e){e.printStackTrace ();} o8bd L< ^}_Ka //k WTJ 0Q0U } 1`&`y%c?B h xO}'`: bO=|utpk public static void main(String[] args) h+FM?ct6} { &0F' Ca new TestMethod(); `@/)S^jBau } m+TAaK } 1UP=(8j/ 点击下载更多相关资料
|