该用户从未签到
|
- package s2.jsp.zhangixao.dao;
y+ o; `5 y7 D3 ~! Y/ H; t - % `$ v# k; E" s" S+ j1 ^8 e* q/ s
- import java.sql.Connection;8 y5 d7 j" p7 v. h* m% e# O
- import java.sql.DriverManager;3 U& ~( C; I* i
- import java.sql.PreparedStatement;9 x( g3 R ^: _ r( e
- import java.sql.ResultSet;: H* p4 ~/ L2 T
- import java.sql.SQLException;
# y b/ E* I4 _4 i% z. d - /**
7 I; X4 p' b1 x$ _- d. S - * 访问数据库7 t. v. C. Z1 o: a& S; I
- * @author Administrator
9 x+ W: e1 j6 S - *6 A3 U' b/ w2 k$ n& J! X' V
- */
! ~; f& L* B9 F3 f" [ - public class MessageBase {; c$ ?* ]) S+ m8 k' m
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
- ?1 r4 l; b3 y; x# z8 t - private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";5 l2 a2 J$ J" v, q$ {
- private static final String DBNAME="sa";* ~' G7 X: \9 R6 ^8 M3 q' x3 h7 a
- private static final String DBPASS="";
1 n/ a* ~% P5 v; @) U0 d; F - /**
7 |3 ~! m+ D3 \1 h7 e - * 连接数据库 _# F5 K4 s7 e* Y
- * @return& n8 v8 _8 l% [5 E* F# T+ x4 ] q# e
- */' n: U/ O" A! D7 ?) t
- public static Connection getConnection(){
+ [* n( \5 B! B - Connection con=null;
4 n! p. S; @! f - try {3 X/ k8 g3 K# b M& E0 F
- Class.forName(DRIVER);
6 \7 V3 P: w5 T/ z - con=DriverManager.getConnection(URL,DBNAME,DBPASS);0 v" ^% V% e: B8 C* h
- } catch (ClassNotFoundException e) {) R# X5 V. {" B% x* X8 ^: t
- System.out.println("加载驱动出现异常");" f: C% U( H5 ]3 N6 d/ j! F% [& C
- e.printStackTrace();; n" e7 w, }3 w3 x* Y
- } catch (SQLException e) {6 J! i7 q# B. w3 L
- System.out.println("数据库连接出现异常");% K3 l+ F# a- _0 u
- e.printStackTrace();- a7 k- _" g9 i5 z
- }
1 |" D- l! v, V" T/ V! D f# i - return con;3 G, s ]- k: W# V
- }; l3 X% G. H5 A
- /**5 z# a' q& ?) U l4 M
- * 关闭数据库
- A7 C1 U$ w& I. m+ v0 g - * @param con& E! j. I& m2 m: `1 f* J1 n
- * @param past7 j: F9 m9 i! D+ S* y/ \* X6 b, }
- * @param rs& o- U- y# u+ B
- */
' x* G; j) w6 Q; y/ N - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){
: F! S' u, }; z- J* @1 P. C4 n - 5 p4 v; @$ S w/ B% w: _! D
- if (rs!=null) {
6 w G) D/ n; X g7 e - try {
" D8 i+ C- H: R - rs.close();7 a* e7 k6 F z u
- } catch (SQLException e) {
' r1 c( w! ^7 v" i; ?3 ] - System.out.println("rs 关闭出现异常");0 j; [( J Y0 A" s. t; E' b
- e.printStackTrace();
- j m* x$ _5 D0 k* J6 H2 Q - }
& t' e! g3 [# C2 W o" L - }: y [ S2 Y) P& i, |$ q) l: Q6 G
- if (past!=null) {
' u; F) n F( y& O* [& S( B" s - try {6 J' h7 H* ~" w9 f3 \
- past.close();
: j/ V! T: k3 g6 N# f0 e; m - } catch (SQLException e) { y$ f' {# f, e5 k
- System.out.println("past 关闭出现异常");
5 W" P8 ?5 R0 Y( n5 ~ - e.printStackTrace();$ ?' Q, ^. q6 Z7 ?5 g) e+ O
- }% j/ H+ [. I( e: f
- }
/ {! H" t3 c( V. R9 [2 ^ - if (con!=null) {! w8 ~7 e2 s9 r$ ~* |9 f
- try {3 ~' U1 j6 D M& u2 z& T* j
- con.close();
7 O& C2 G) d7 S& D7 e( D* l - } catch (SQLException e) {
3 g+ O- z, e8 {1 `; @ - System.out.println("con 关闭出现异常");1 f* q0 h$ n1 r7 b# C
- e.printStackTrace();% O9 B! b* e! Y1 [5 ~
- }! s; y- s, k3 w; ~' S. O+ x
- }
( k" o) P( t. ]& q# t* n - }
h) L, x) x2 A - /**+ b$ e5 f0 [) g% z9 e* w
- * 执行数据的增删改操作
3 W* A6 R; |% k( G' l% g - * @param sql; H( a$ V8 b1 g# X
- * @param getValues
* h6 r) e# n7 o6 R7 u+ z/ \8 S - * @return; z7 t! W9 @/ |
- */- i; }; B( }6 j* M$ u# Y: ?
- public static int executeUpdate(String sql,String[]getValues){3 ]" r2 f* [! i1 e9 T- Y% P( M1 Q2 A0 k
- int t=0;" x! ^- V- T+ e- k2 [; S6 g" Y* n
- PreparedStatement past=null;
: I" n2 k- \; ]3 T - Connection con=null;" O3 f& \6 u& h& s& ]4 j y) I
- try {3 b9 {7 i+ N n' k0 s
- con=getConnection();
& j4 v5 f3 v" |. {# l$ a) N% V - past=con.prepareStatement(sql);7 ?( w& \# W7 h e9 R: n( q. Y: y" h
- if (getValues!=null) {* o: E3 _5 k U% A$ d" A
- for (int i = 0; i < getValues.length; i++) {& [3 H L& R6 c" X) q; Q7 `
- past.setString(i+1,getValues[i]);. F, |* M& f( u' v' A# ]
- }
, \' q% c% p |/ o - }& a: I: p. X" x$ U
- t=past.executeUpdate();
- Y; p) T. X- `8 p1 k - } catch (SQLException e) {4 Y; S, Y0 k9 L. _# C, j+ a
- System.out.println("执行数据库操作出现异常");
& l2 Q/ U: M( q) a - e.printStackTrace();. X7 c, a4 m' ?# w2 u+ X
-
1 i# v9 S) w5 F* F - }finally{) X4 e9 Z: J* ?, c7 \) R5 ?7 O
- MessageBase.CloseAll(con, past, null);4 E1 Z; W8 K c6 V8 E- M
- }( B8 }" ^: T% S2 X. J
- return t;0 |" X* m% f* K9 v) r# f7 _% a3 z. C
- }
' l( C2 Y2 j+ a1 x& @. l! F% l - /**
. A# \2 B* Y8 M6 _, f, g - * 测试连接
& N; v% |5 u2 K' }7 o" u - * @param args7 N* R) D7 ]; \ R$ q
- */4 E' ^5 V* W7 \& g& A% l
- public static void main(String[] args) {# L/ u' n; }" ?7 p' R" ~" Z& A
- Connection conn=getConnection();
_, v# S2 S T - if(conn!=null){+ ^7 |3 z% D$ L5 u6 t! @3 u
- System.out.println("连接成功");
) r1 H8 f3 E' W0 H8 ~% w - }else{ d% B$ o- N( q
- System.out.println("连接失败");/ S( T' X0 {# K$ X
- }
1 l8 h/ q6 A6 L1 i# L* q - }; q3 y/ t n/ V, p s
- }, j. v5 X0 f9 |
复制代码- package s2.jsp.zhangixao.dao;
3 f& s& f& c5 K - 2 s% ~& ?. l9 l) b' S9 g
- import java.util.List;, ?" ]" N& G, ~4 w+ s
, D Z) ~+ F% C: o3 v- import s2.jsp.zhangxiao.entity.Message;9 r: g1 d3 ?7 G; k& k8 s
- ! v- g3 O# T3 c' G( H d
- /**
# t. }3 |4 f" o! b1 z - * 留言板接口9 ]1 x2 [3 N! |: G! O" x
- * @author Administrator
( j( \3 P; b X' s - *
5 |# a7 L5 `' j# E. ^; Z! F) M - */
) S$ D! r% g& E/ y; l: w7 P/ O - public interface MessageDao {
2 p: N; p' |6 n+ b4 ` - //添加留言% m. L. T$ B6 }& w" r& D$ |$ Q
- public int addMessage(Message message);
# n2 D; {" k# I1 }4 U, t' K - //查询全部留言
- m7 G( l+ j+ L, u& V - public List selcetMessage();
6 ~8 \: \$ g9 e0 W4 N$ N, X- v( C - }* m, ~7 ~- t4 @; C6 m
复制代码 项目源码下载地址:
* N+ U9 w- ?# r2 ^' @5 q$ Q* M1 O4 o. B" }# U+ G
) c* M% _9 E% h1 {1 v6 h5 j. T
- q* N4 x7 u# f+ w B6 s* ]) H; K, M0 K* g3 S
|
|