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- package s2.jsp.zhangixao.dao;
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- import java.sql.Connection;
- k8 a5 Z6 X0 P - import java.sql.DriverManager;
# p" R$ x( c- w9 m& r - import java.sql.PreparedStatement;
) ?# T- X$ `) i2 D/ m - import java.sql.ResultSet;
+ c: ?- o; p/ |$ I5 E' a% { b - import java.sql.SQLException;
0 j. A( G4 L1 z1 S3 W4 t3 M - /**
* m. g3 \1 ^: D2 }) u( s8 v - * 访问数据库* f( A! r9 b/ @# S. I T+ A
- * @author Administrator
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- */ K c( k; y1 H d" I n
- public class MessageBase {
, B* c% U7 `5 K. H/ V* q - private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";8 l7 Q1 ]% U: c7 z' l2 I J5 B
- private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";
7 i: g9 U( m) k" M) q- r - private static final String DBNAME="sa";
* g% W9 p' \3 L* a w+ c - private static final String DBPASS="";
* H1 [' d. v: W7 e. O - /**
/ E# j% \2 M5 f7 Q* \4 \ - * 连接数据库
: a. m9 a7 ^; u+ G2 ? - * @return" R0 t1 u' P Z: d; j* P$ r
- */# z) f2 r/ y& M. w9 c
- public static Connection getConnection(){
2 a' t4 C% n! ?+ M. y - Connection con=null;* J8 S& @* A% J& k, H
- try {
& o9 O5 T% R' {1 V6 r) @ - Class.forName(DRIVER);
9 h4 z' q$ p0 @7 d$ t) K0 @ - con=DriverManager.getConnection(URL,DBNAME,DBPASS);
' t: s5 \3 h; e4 K! u) _ - } catch (ClassNotFoundException e) {) P' P3 u+ ^; @, l) s' j
- System.out.println("加载驱动出现异常");& O) G& A) M0 z# |3 J
- e.printStackTrace();" W! _; y5 I9 @: y0 ?8 Z
- } catch (SQLException e) {, g+ F5 a2 z+ T% ^: T% V0 R6 d
- System.out.println("数据库连接出现异常");6 T v, H8 b9 `0 V( i, o
- e.printStackTrace();; Q' X$ b& N, s2 U2 m, G0 n' @
- }& _5 f9 A6 |* L, K% T
- return con;
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- /**
% A0 Z2 G! C- M# I9 D6 i B8 L - * 关闭数据库
8 R, M2 z1 \1 }1 M4 }7 i, q+ V$ a - * @param con
' Z4 V4 o- e { - * @param past P$ J0 a' ~: @1 l
- * @param rs
' s' _3 d: s" w" `) Z, D. P - */
$ e0 Q: b+ `9 ~8 w: W) T/ b7 L! n - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){
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+ x# c0 d5 p# S: h C - if (rs!=null) {2 _& T: u4 P. x6 O6 D
- try {
. A0 x* p- k2 A - rs.close();, D! n4 H" h9 D- \, M
- } catch (SQLException e) {
2 {$ a0 O- e, K# u! F - System.out.println("rs 关闭出现异常");, F5 n+ U8 J2 G: h, k
- e.printStackTrace();
' r9 ]. Q: }- g- f" N. D - }
9 G5 p4 [4 U8 @1 ?. H2 R5 X: | - }
% J0 H w: x; t6 L' M - if (past!=null) {& F# v ~% a! _, y
- try {
) G' V; p6 u; f( i, r" V: H - past.close();& k/ m1 `( V1 R- W
- } catch (SQLException e) {3 t. r4 G2 V+ w( m6 j
- System.out.println("past 关闭出现异常");5 t. m1 s5 _. ~4 V7 V) }' D
- e.printStackTrace();% |: `% I+ r+ @4 @. A% n
- }
" l' _1 K2 K Q - }' _) W, E" k1 i% \! P1 k( Q
- if (con!=null) {
" @1 n* r) {* ~" [$ x2 x - try {0 |8 h5 ~4 a' y* U$ g5 L/ P
- con.close();
% t# l$ U& M" x9 O$ p3 d - } catch (SQLException e) {
/ i+ _/ v+ {( _6 v - System.out.println("con 关闭出现异常");
% _& ?% a' [' w$ E- _: d, ?3 v - e.printStackTrace();/ [ l% X" C! C0 H6 W
- }: O N L# |1 G$ D( n8 p5 S1 |
- }# d5 G1 p8 n, z
- }. v: A8 z _" N% o; |# k
- /**' I5 A! {4 v! g- \. c% n/ a# v3 X, N: D
- * 执行数据的增删改操作
4 m# f. p D2 z( A6 {+ `) {! x - * @param sql
4 `' T- q1 X- y9 ~$ [ - * @param getValues) x4 u) B$ p' v
- * @return
' l" z6 A, Z9 b' d# a - */0 ^) B2 n' g, J: M0 {
- public static int executeUpdate(String sql,String[]getValues){
p9 v( x m7 r4 V6 q - int t=0; [" S/ W) X% C' ^
- PreparedStatement past=null;6 V ]- ~- Q* Q! y
- Connection con=null;* _& _: i& ~. V/ u
- try {
$ k) W/ c6 `( M, m - con=getConnection();
8 u0 _( z$ `% Q) r+ G d5 s- l% e. a - past=con.prepareStatement(sql);' U/ Z7 a# D. a/ U3 G7 O$ y
- if (getValues!=null) {5 U4 m/ N1 s/ R- H
- for (int i = 0; i < getValues.length; i++) {
8 n4 \( n: b1 I' I! o - past.setString(i+1,getValues[i]);
8 h/ V; ~) e; T) P. [" n - }
" G0 n; a ?- e' F `8 T - }
& D$ t0 m, D' f* L% ~7 Q - t=past.executeUpdate();
) ]" L) u* e3 p+ x3 T; y - } catch (SQLException e) {# X' D3 a3 N. a' Z. Y
- System.out.println("执行数据库操作出现异常");) B: v9 z5 U. L) ]4 w
- e.printStackTrace();
: L' U9 P6 U( V, i0 E3 J: { - # j$ G* H0 [; E; m( b) v Y" L- e
- }finally{! `6 S u, n4 V }) Y
- MessageBase.CloseAll(con, past, null);2 B. S9 G# ^+ }; }
- }
. f6 ?: p3 E3 x0 D8 V - return t;5 n; d! L9 o# l* c j$ ^. \& Q8 J0 ]
- }1 ~9 A9 _5 F+ ~$ L
- /**7 H2 z& m9 U; M* ~" {
- * 测试连接, ?" K4 }& }9 w$ t s. K
- * @param args
- G3 z* b1 o9 B3 i - */
& {1 `0 }% L+ W; M$ E+ L0 s! k% n0 M - public static void main(String[] args) {% t8 h- A& [. M1 u' X
- Connection conn=getConnection();) H4 h6 j- }6 N6 P* r
- if(conn!=null){9 v* |7 p: h' g+ k+ z, t( `3 ~
- System.out.println("连接成功");1 X+ _( I, m9 X3 |3 U2 Z# M* ?
- }else{+ j, w1 z; o7 {2 ~/ L
- System.out.println("连接失败");
( p L$ r& @6 m* Z# D) c4 I8 t - }
( K+ S6 S ~* ^9 \) c9 S$ z0 W - }. v5 F! k! c1 |: ^# T
- }
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复制代码- package s2.jsp.zhangixao.dao;
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- import java.util.List;8 j* [& t1 G9 L) w5 d
* _; x6 {( S& J5 A- import s2.jsp.zhangxiao.entity.Message;% A& `+ U6 M( v- l. Z a
- ; o7 L! U% T/ q/ y3 g/ w
- /**6 T6 X% h+ e7 ~5 o
- * 留言板接口
- T) L6 q+ V# |4 t0 Z - * @author Administrator+ b9 p- c2 H# l, f9 Y
- *- b3 p0 V0 x1 V) \
- */3 m7 d* Q* K: e* L; y6 G9 A8 O* y
- public interface MessageDao {6 w4 l2 @, y1 h& F% y
- //添加留言
. E( K+ q9 ?0 O( l+ Z - public int addMessage(Message message);! H$ B. q. z# t5 a/ T3 O& ]: U' P
- //查询全部留言
3 C$ L9 G& L1 L) u - public List selcetMessage();- K6 v6 \( `! h. U
- }- t; [" q7 V- @: P( q& {
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