-
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
|
/* Gg'!(]v **SiteFileFetch.java 72OqXa* */ rwLKY.J] package NetFox; v}j5G,
[- import java.io.*; mufGv%U2 import java.net.*; o{,IO!q
,XEIg FprdP*/ public class SiteFileFetch extends Thread { ]{6/6jl 6~%><C ?;CIS$$r SiteInfoBean siteInfoBean = null; //文件信息Bean R QQ'Wg long[] nStartPos; //开始位置 D#&9zR86F long[] nEndPos; //结束位置 &>Ve4!i
q FileSplitterFetch[] fileSplitterFetch; //子线程对象 Hh^ "c} long nFileLength; //文件长度 =\%ER/ boolean bFirst = true; //是否第一次取文件 W:RjWn @< boolean bStop = false; //停止标志 uAA2G\3 File tmpFile; //文件下载的临时信息 Z|n|gxe DataOutputStream output; //输出到文件的输出流 x*vD^1"'P =;0-t\w! //负责整个文件的抓取,控制内部线程(FileSplitterFetch类) 'r]6 GC8Z$ public SiteFileFetch(SiteInfoBean bean) throws IOException [n[dr@J7v { R BHDfm'~7 siteInfoBean = bean; P!+Gwm{ //tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); MT~^wI0a tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); ]!{S2x&" if(tmpFile.exists ()) ]M*`Y[5" { D5c
8sB bFirst = false; u @Ze@N% read_nPos(); =l43RawAmu } W9%v#;2 else A,_O=hA2I { 9-T<gYl nStartPos = new long[bean.getNSplitter()]; >XgJo7u nEndPos = new long[bean.getNSplitter()]; e
n~m)r3& } x;7l>uR Qf( A T5u71C_wmt jlj ge=#c2 } 66pjWS
{X .b]sQ' "KP]3EyPc public void run() [y9a.*]u/@ { IADHe\. //获得文件长度 x9Z89Gwi //分割文件 XZKlE
F? //实例FileSplitterFetch {nwoJ'-V //启动FileSplitterFetch线程 P'qBqx[ //等待子线程返回 L6_%SGY_iE try{ xZ`z+) if(bFirst) (-WRZLOQ { t\ oud{Cv nFileLength = getFileSize(); |)!f".` if(nFileLength == -1) .3C::~: { cZBXH*-M! System.err.println("File Length is not known!"); ,kJ7c;:i } >O\+ 9T@ else if(nFileLength == -2) +u
Iq]tqe { _dm0*T ? System.err.println("File is not access!"); &qS%~h%2 } u$R5Q{H_ else BjfVNF;hk: { I/njyV)H for(int i=0;i<nStartPos.length;i++) u"qVT9C$= { /8e}c` nStartPos = (long)(i*(nFileLength/nStartPos.length)); cRf F!EV } X~jdOaq{F: for(int i=0;i<nEndPos.length-1;i++) S#M8}+ZD, { ,)[9RgsE nEndPos = nStartPos[i+1]; b$DiDm } U&#`
<R_0 nEndPos[nEndPos.length-1] = nFileLength; VP
A+/5TW } 9\.0v{&v } F NPu f/J/tt c7r(&h //启动子线程 (O+d6oT=Z2 fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; E'aOHSAg for(int i=0;i<nStartPos.length;i++) X\Bl?
F
{ .hmeP
MK fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ^Q`5+ siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), aPelt` nStartPos,nEndPos,i); gw"cXny Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); L-w3A:jk fileSplitterFetch.start(); !s-A`}
s+ } tG$O[f@U6 // fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), ,RR{Y- siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); A6=Z2i0w>X // Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", |,,#DSe nEndPos = " + nFileLength); Z2M(euzfi3 // fileSplitterFetch[nPos.length-1].start(); +JtK VF k";dK*hD, C!^A\T7p //等待子线程结束 MOQ6&C`7q //int count = 0; P6GTgQ<'BA //是否结束while循环 ooJxE\L boolean breakWhile = false; `'s_5Ek D Yf2V6'
!tTv$L> while(!bStop)
~frsgHW { U*a#{C7" write_nPos(); Nl YFS?5 Utility.sleep(500); "yw{A%J breakWhile = true;
<)TIj6 e=(Y,e3 {'4#{zmp for(int i=0;i<nStartPos.length;i++) eWDXV-xD { uNn1qV if(!fileSplitterFetch.bDownOver) :o^ioX.J { X&zGgP/ breakWhile = false; W5Z-s.o break; :<P4=P P } SEI0G_wk$ } fsjLD|?|: if(breakWhile) my A;Y break; 9 wR D=a z|3v~, 8j>V?'Szk //count++; S} UYkns* //if(count>4) R7Qj<, // siteStop(); ~}b0zL } n3$=& c(=>5 &$|~", System.err.println("文件下载结束!"); >;Hx<FKxP } (X@\2M4@T# catch(Exception e){e.printStackTrace ();} legWY)4D; } b~&cYk' .fzyA5@l D
1.59mHsD //获得文件长度 Nmx\qJUR( public long getFileSize() R_G2C@y* { 1K3XNHF int nFileLength = -1; ,mm97I try{ -E\G3/*51 URL url = new URL(siteInfoBean.getSSiteURL()); /rZk^/' HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /4Wf\
Zu httpConnection.setRequestProperty("User-Agent","NetFox"); $EY[CA
E R8[VD iM6E 0 8L;u7u int responseCode=httpConnection.getResponseCode(); &C
MBTY#u if(responseCode>=400) qWW\d', . { P WS8Dpb processErrorCode(responseCode); H'3
pHb return -2; //-2 represent access is error S=P}Jpq?Y; } _:\rB Q(<A Yu PFpFqJ)Cs" String sHeader; dsw^$R} E&J<qTH9 RTVU3fw for(int i=1;;i++) 4Vi*Qa_,y { =b$g_+ //DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); 2j4202 //Utility.log(in.readLine()); &PPnI(s^K sHeader=httpConnection.getHeaderFieldKey(i); EC$F|T0f if(sHeader!=null) B)7 :*Kj { 8WDL.IO if(sHeader.equals("Content-Length")) e*'bY;8lo { }BS
EK<W nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); vfqXHc
unj break; X$==J St } {P?Ge } VJ-t#q" else hvTc( 0;mB break; <9>L^GgXA } 1.p?1"4\u } "oxUKT catch(IOException e){e.printStackTrace ();} m>Wt'Cc catch(Exception e){e.printStackTrace ();} ij]~n 9HR1m3 b [HnhAI Utility.log(nFileLength); HAE$Np|>a 0>j0L8#^p pm+E)z6Yo return nFileLength; /
P@P1l|I } Uot(3p!S6 DA=LR W\B@0Is o //保存下载信息(文件指针位置) DOtz private void write_nPos() H$?MPA-c { 2A try{ ~L&z?'V output = new DataOutputStream(new FileOutputStream(tmpFile)); G?F!Z"S output.writeInt(nStartPos.length); Ke^/aGi}O for(int i=0;i<nStartPos.length;i++) IrRy1][Qr { "T /$K // output.writeLong(nPos); y+B iaD!U output.writeLong(fileSplitterFetch.nStartPos); |b@`ykD output.writeLong(fileSplitterFetch.nEndPos); tPiC?=4R } #pRbRT9 output.close(); ~Fvz&dO } 3U?gw!M> catch(IOException e){e.printStackTrace ();} ) %Xp?H_ catch(Exception e){e.printStackTrace ();} TQt[he$O } d^?e*USh zfUj%N |C./gdq //读取保存的下载信息(文件指针位置) 7h/Mkim$5 private void read_nPos() |LIcq0Z { um PN=0u6 try{ nUq@`G DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); ii`,cJl int nCount = input.readInt(); 'O ~_g5kC nStartPos = new long[nCount]; -;Mh|!yg nEndPos = new long[nCount]; D_F1<q for(int i=0;i<nStartPos.length;i++) # .&t'"u { 9_*3xu<7i nStartPos = input.readLong(); s;<]gaonB_ nEndPos = input.readLong(); Q%'4jn?H } ;YokPiBy input.close(); f~?5;f:E } Yc[vH=gV} catch(IOException e){e.printStackTrace ();} wD catch(Exception e){e.printStackTrace ();} %j0c|u } agoMsxI9 F$v ^S+Ch g>ke;SH%KY private void processErrorCode(int nErrorCode) 'U@Ep { l;z+E_sQ System.err.println("Error Code : " + nErrorCode); )@B! } W:f )#' !x-9A @(/$;I, //停止文件下载 \HoVS public void siteStop() N}z]OvnZH { `aMnTF5: bStop = true; 9@h-q(-
for(int i=0;i<nStartPos.length;i++) /$qB&OWJn
fileSplitterFetch.splitterStop(); 0^P9)<k' A@.ruG$ *Q [%r } t P'._0n0 } 0n{+_
//负责部分文件的抓取 H5FWk **FileSplitterFetch.java '&AeOn */ V-%jSe< package NetFox; o9D#d\G S ="\ S OlW5k`B import java.io.*; X|TGM import java.net.*; SX?hu|g_r `sdbo](76 w&^Dbme public class FileSplitterFetch extends Thread { U&+lw= )1 0aDTlr QSYKYgxC String sURL; //File URL `+(JwQC4 long nStartPos; //File Snippet Start Position p|>/Hz1v long nEndPos; //File Snippet End Position }z-)!8vF int nThreadID; //Thread's ID (:#4{C boolean bDownOver = false; //Downing is over W}^>lM\8 boolean bStop = false; //Stop identical sBN4:8 FileAccessI fileAccessI = null; //File Access interface B`%%,SLJ oe_,q&e NUY sQO) public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 5zJ#d}%}S" { gepYV} this.sURL = sURL; Xs4G#QsAJ this.nStartPos = nStart; 2c9]Ja3:6 this.nEndPos = nEnd; L~M6ca" nThreadID = id; Gnqun% fileAccessI = new FileAccessI(sName,nStartPos);//定位 ]waCYrG<sY } <ot%>\C :; 3y^! rYyEs
I#qo public void run() g3w-Le&T { s\
]Rgi>w while(nStartPos < nEndPos && !bStop) SP|Dz,o { V+y:!t` wqn}t] wGpw+O try{ 4y9n,~Qgw URL url = new URL(sURL); l0wvWv*k HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Q0_|?]v httpConnection.setRequestProperty("User-Agent","NetFox"); ;cZ]^kof String sProperty = "bytes="+nStartPos+"-"; bJ.68643 httpConnection.setRequestProperty("RANGE",sProperty); 4d]T` Utility.log(sProperty); ])T_&% rI1;>/Ir }~Y#N InputStream input = httpConnection.getInputStream();
0c:jwtf //logResponseHead(httpConnection); 1'J|yq k@C]~1 gl6 *bB= byte[] b = new byte[1024]; jDM^e4U.l int nRead; 6EX8,4c\ while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) |)R{(AK- { DO=zxdTI! nStartPos += fileAccessI.write(b,0,nRead); GmLKg >% //if(nThreadID == 1) WXE{uGc // Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); DvXbbhp } Zh.9j7
>p x42m+5/ .SSj=q4? Utility.log("Thread " + nThreadID + " is over!"); @y\M8C8 bDownOver = true; J3=^+/g //nPos = fileAccessI.write (b,0,nRead); .zyi'Kj } y>m=A41:g catch(Exception e){e.printStackTrace ();}
XS"lR | } yu62$d } 9k!#5_ M (A8X|Y `_&7-;)i*\ //打印回应的头信息 O!\\m0\e public void logResponseHead(HttpURLConnection con) V,Br|r$l( { 4qEeN-6h for(int i=1;;i++) GCPSe A~cx { HveOG$pT String header=con.getHeaderFieldKey(i); DJhCe==$v if(header!=null) IE9A _u* //responseHeaders.put(header,httpConnection.getHeaderField(header)); xk5Z&z Utility.log(header+" : "+con.getHeaderField(header)); /7<l`RSr else KrT+Svm break; H@,(
} (f|3(u'e? } pVm'XP GKKf#r74 ^cF_z}Zi+ public void splitterStop() snyg { vSy#[9} bStop = true; B?J#NFUb } U_c.Z{lC4 h"G#} C] u($y<Q)= } K%A:W hK&/A+* $u./%JS /* ]\<^rEU **FileAccess.java ?-0>Wbg *//文件访问(定位,写) @dCoh-Q3 package NetFox; @'EU\Y\l import java.io.*; cvvba 60 W[Ro) <M|kOi public class FileAccessI implements Serializable{ @t6B\ ?4'T RE(R5n28, //RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 u%vq<|~- RandomAccessFile oSavedFile; LCRZ<?O[| long nPos; {?' DZR s e " f/ R1X{=ct public FileAccessI() throws IOException F+!K9( `| { ,9W|$2=F this("",0); G-]ndrTn } =FXZcP>h @<O
Bt d D"m]`H public FileAccessI(String sName,long nPos) throws IOException 'e;]\<
0z { q}#4bB9 oSavedFile = new RandomAccessFile(sName,"rw"); _f u?, this.nPos = nPos; U1t7XZ3e oSavedFile.seek(nPos); g9`z]qGWS: } 4~3 N;]X lXS.,#lp W7lR54%| public synchronized int write(byte[] b,int nStart,int nLen) /MB3w m { O!(M:. int n = -1; Ph'P<h:V try{ kw>W5tNpf: oSavedFile.write(b,nStart,nLen); ~4\J}Kn n = nLen; |T}Q~ } Oozt&* F catch(IOException e) YULI
y-W { CD'.bFO^+T e.printStackTrace (); *eAsA(; } #%xzy@` EencMi7J c-L1 Bkw return n; B6&;nU>; } Pvq74?an` 5
#)5Z8`X B'OUT2cgB } Pwn3/+"%K l.c*,9
>weY_%a /* |#);^z_ **SiteInfoBean.java mX9amS&B$ */ dMw0Aw,2]8 package NetFox; ]kQ*t{\ +,&8U&~` ykv,>nSXLL public class SiteInfoBean { k[0Gz |^^'GZ%a _H9.AI private String sSiteURL; //Site's URL 9gFema{U private String sFilePath; //Saved File's Path &>zzR$#1 private String sFileName; //Saved File's Name K]{Y >w private int nSplitter; //Count of Splited Downloading File yF-EHNNf WleE$ , Wm{Lg0Nr public SiteInfoBean() :nZVP_d+ {//nSplitter的缺省值为5 )_eEM1 //default value of nSplitter is 5 @7Oqp- this("","","",5); 7cTDbc!E- } !=7(3<? ]_6w(>A@3# gJE m public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) J3OxM--8" { ' XJ>;",[ sSiteURL= sURL; SW!lSIk sFilePath = sPath; ToWiXH)4 sFileName = sName; @kCFc} this.nSplitter = nSpiltter; 5hN`}Ve RjC3wO:: +>b~nK>M } DlHt#Ob7 [ZC{eg+D i^9 ,. $<1 public String getSSiteURL() F<K;tt { cI~uI' return sSiteURL; z']TRjDbT } 3mI(5~4A]? 0x&-/qce6W 5G!0Yy[' public void setSSiteURL(String value) >/@wht4- j { Ah5`Cnv sSiteURL = value; -][~_Hd{ } I!FIV^}Z( 3K2B7loD)~ y:t@X~ public String getSFilePath() N~rA /B]T { 0!<qfT
a return sFilePath; TR;" &'#k } N`3q54_$ }HB>Zb5 3q'["SS public void setSFilePath(String value) *$K_Tii { h$p]M^Z7 sFilePath = value; 87; E#2 } T?vM\o%i3 UoAHy%Y<% ZqtL4M~9 public String getSFileName() GRM:o)4;# { k!?sHUAj return sFileName; d}@b 3 } K/xn4N_UX - BQoNEh Rcg q7W public void setSFileName(String value) [{iPosQWj { w ]8+
OP sFileName = value; oT76)O } <v&L90+s\; HQtR;[1 52X[{ public int getNSplitter()
BK$cN>J { o#GZ|9IL return nSplitter; Qt-7jmZw1 } 5&59IA%S 4eFqD; *Ubsa9'fS public void setNSplitter(int nCount) Y~E
8z { `_YXU nSplitter = nCount; srzlr-J } ltQo_k } i}u,_
} (AYzN3
?D b+=@;0p*6B /* 7:[u.cd **Utility.java s#Os?Q? */ s2Z'_rT package NetFox; #:B14E )RUx _3Kow{y\ public class Utility { o >wty3l: {lam],#r :.DZ~I public Utility() >m:;.vVY { Nxm^jPM0 xDqJsp=]- M `O=rH
} } `T'[H/ t=l@(%O 0_ //线程睡眠 ^LI\W'K public static void sleep(int nSecond) o#Gf7.E8 { ttP|}|O try{ !
3 ;;6 Thread.sleep(nSecond);
Vs1H)T% } 1k)31GEQw catch(Exception e) 83(-/y { 'c7'iDM e.printStackTrace (); <z.Y#{p?k } As{Q9o5j/ } e
w%rc.; p>ba6BDJT //日志 4h*c{do public static void log(String sMsg) %LM2CgH
V { |*fi!nvk@ System.err.println(sMsg); H*.v*ro9_ } K#%@4]jO3 C.|.0^5 q1^bH6*fl public static void log(int sMsg) ,kQCCn] { ]D.}
/g System.err.println(sMsg); m~I@q
[ } q!10G } /wi*OZ7R C1`fJhy &gLXS1O /* tf3R **TestMethod.java ?]%ZJd */ i,h)VCc package NetFox; T^ )\ m$.7) 24 SuR+Vv public class TestMethod { d53Eu`QW? w#d7 !U7}?i&H public TestMethod() sC'PtFK8z { ///xx/weblogic60b2_win.exe ).32Im!;#R try{ >6KwZr BB SiteInfoBean bean = new SiteInfoBean("http://localhost/xx/weblogic60b2_win.exe","L:\\temp","weblogic60b2_win.exe",5); aCRiW;+' //SiteInfoBean bean = new SiteInfoBean("http://localhost:8080/down.zip","L:\\temp","weblogic60b2_win.exe",5); Gh5 3Pne SiteFileFetch fileFetch = new SiteFileFetch(bean); ]."t fileFetch.start(); x' v-]C(@ } r9Vt}]$a G catch(Exception e){e.printStackTrace ();} [-0=ZKH? +Pc2`,pw| ,. HS )<B } |jI|},I gJH^f3 79z/(T+ public static void main(String[] args) t`-
[ { 'WNq/z"X new TestMethod(); tjLG$M1z` } !ra,HkU' } z8dBfA<z 点击下载更多相关资料
|