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- package s2.jsp.zhangixao.dao;$ Q9 J- g( ^' f/ ?# s
5 m* p7 l9 S+ I& A6 A0 _- import java.sql.Connection;
% T, c; X w% _ - import java.sql.DriverManager;
7 J4 R* G) n7 P" o2 _; O" O& @8 C - import java.sql.PreparedStatement;
. m9 S: l; M3 V - import java.sql.ResultSet;! `; @1 l( k3 M% R d7 N$ v" F
- import java.sql.SQLException;
' [- Z( w3 f9 p' N - /**
% X& @; @+ d# ^& D) D5 V - * 访问数据库2 Z) A* M' T5 q7 f% {: A, f
- * @author Administrator, I- `: x3 ?4 H2 O# c" ^6 `
- *& ^! w" i* y Q
- */% U5 ~" q# i% z9 d/ S2 M2 C7 N
- public class MessageBase {/ o, z; o7 B# }2 E6 |" M
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";6 w! f& Y' M! v' ` @2 o
- private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";
) _* a* j4 F j - private static final String DBNAME="sa";) F; n0 A- O$ A6 _
- private static final String DBPASS="";$ p) o E2 t9 E9 W' w/ P
- /**% D: q t; H6 j( _8 V6 v5 y
- * 连接数据库
& _$ ~0 |, p# B - * @return( N4 V% y+ C; f7 a d: K
- */" J, e6 _. X; L) M
- public static Connection getConnection(){ `' c0 {* O R# l0 d0 z
- Connection con=null;
; Q2 c/ w4 x: }; g9 @3 ` - try {
$ y7 w+ \2 B0 z# @; ` - Class.forName(DRIVER);9 ]6 O# A( b& a" z# w& M: \. ~
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);
# K' K! ^* q* I0 M - } catch (ClassNotFoundException e) {
2 z6 p2 @( Y9 m* {, T, f- Z2 G - System.out.println("加载驱动出现异常");
- [& J2 F! u' b, r; } - e.printStackTrace();6 h2 x" N1 @, K3 G
- } catch (SQLException e) {
2 h0 [8 Q1 S: S+ I( G' L" e - System.out.println("数据库连接出现异常");
' S- t/ ~) K" }3 A/ R( Y - e.printStackTrace();
/ q+ f; F' P& f8 u, R" {8 y - }# }8 y- ~2 r1 \! ^2 P; R
- return con;1 f1 ~& g) h# u% I
- }( J1 S1 |2 `. T) R/ t. e' n
- /**
' s& ~& D: }& O/ O - * 关闭数据库; M* r5 U: z) W+ q: I. V! d
- * @param con' c, x3 r' f6 N1 G8 F J( B# D
- * @param past
- e( K- X) `# L8 R9 @/ U2 S - * @param rs# @; Y$ T2 u' E! N: X" K2 G
- */ H8 c3 X" P' z3 }) F; U+ |) @3 I! _
- public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){" G8 v. k0 |, B/ U$ y
-
' P' r" H- z6 u - if (rs!=null) {- c* ^- R* z8 A% E
- try {9 w1 T! |- E7 L; o( N
- rs.close();% V3 }/ \ N5 A
- } catch (SQLException e) {" w* M' Z0 D4 Q% j
- System.out.println("rs 关闭出现异常");% ^8 q$ b7 K' u: p, X! \- t
- e.printStackTrace();2 b) ~6 d, u4 e% O9 d% {7 x9 D
- }2 F9 m3 r% G" V7 O/ j- M
- } y9 ]+ r+ {, j0 N$ G* Z6 w# j
- if (past!=null) {
" f7 z. K1 ~5 X, U2 P - try {
# L) Y7 s/ ~! r1 L4 R$ T - past.close();$ M/ q2 F; q: h7 x+ u
- } catch (SQLException e) {
5 o# r0 M0 n* w - System.out.println("past 关闭出现异常");1 g3 k6 D5 d+ J+ `1 D$ ]1 y n0 q
- e.printStackTrace();
% y3 V+ j' w7 I& }! ?0 P - } n+ }0 u& j9 E( @8 \; v! T: S
- }
$ o# k0 Y2 e: r; h, B' J! H - if (con!=null) {
9 Q+ E* d; o. K5 ~ - try {% y: }2 k+ o l! h& n
- con.close();
. P$ y. N/ A" V+ S8 Y - } catch (SQLException e) {
- q1 o) O* F/ Q5 s - System.out.println("con 关闭出现异常");- O) P9 E2 `+ P
- e.printStackTrace();
- Z/ @- |! I; @) ]& A1 ~! r5 c - }
: e$ B5 q9 r/ Y8 x - }
0 a& w: F3 W* M% k) k0 x2 j* k - }
* b- B5 t8 B9 X$ S8 m, I - /**
2 b0 I L% |" c4 W - * 执行数据的增删改操作9 ~; [9 z. M( E3 u# I" L
- * @param sql
+ p& N& N$ {( U' ^% W: n( U - * @param getValues# K. O: ~8 M z5 x, |) J5 ]. _
- * @return
9 n5 k F: B# s - */
/ f/ I- Q2 K; o; b- b8 { - public static int executeUpdate(String sql,String[]getValues){' k- q/ K7 P+ m: z$ J) d
- int t=0;
; S) M7 B7 R9 n! E8 u - PreparedStatement past=null;
9 @( @" w9 q# k( ?* _ - Connection con=null;
, ?0 l! ^. S* T - try {, {, E' t7 t! [* Y3 O, G. X
- con=getConnection();' Z& E) o% ]) g
- past=con.prepareStatement(sql);
2 N8 {* s/ e. u# w - if (getValues!=null) {
& O: o' v0 U: }7 U! H p - for (int i = 0; i < getValues.length; i++) {) g2 m( R# V) o; G
- past.setString(i+1,getValues[i]);
9 S; _6 L. @2 P - }
/ W& L' Q4 m$ H# q$ r - }
6 p$ E, Q S: |% |! z* R - t=past.executeUpdate();1 h+ ?3 w% Q) e9 F: i
- } catch (SQLException e) {4 Q) }7 M& I2 d% G N' [$ q+ g9 H
- System.out.println("执行数据库操作出现异常");. r& E4 A- J8 N6 a# n* o
- e.printStackTrace();; D9 s" B( f3 X" w1 }
-
: T! Y6 V" I" a/ y( | - }finally{0 q1 `8 S( c8 q) V; M! U/ N
- MessageBase.CloseAll(con, past, null);
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- return t;
0 `8 {1 B! z4 e+ R' s: a9 x9 X - }- r) n9 {. L! U) w
- /**
' }& }1 V, F' D0 c$ \2 \( @8 l& ] - * 测试连接& P4 [5 o7 u6 U( |( G
- * @param args
3 d0 D: S& t( \7 f - */
5 n. n- c+ f2 c. T: J! g - public static void main(String[] args) {
v& C2 c D$ {& b. x* ^ - Connection conn=getConnection();
- Y) k" \* g% [$ V+ l+ A: [ S5 K - if(conn!=null){
! ^, F5 m% V$ K3 d7 P4 { - System.out.println("连接成功");' U+ n; V# K' a3 l
- }else{# T& A& k4 ]; L
- System.out.println("连接失败");
' i" o3 x, Y* ]* i: G& O8 P - }
' S. T V, s7 i - }
9 h! S; O' v) _" x - }6 K0 {# l8 A% H: U8 s5 `
复制代码- package s2.jsp.zhangixao.dao;; a$ ?# C2 ]: m+ C
- 1 E( m: S; o; Q; l+ R
- import java.util.List;
0 [2 A! n' m9 @" K# p# w
8 x$ G" x* I& t/ Q: ]. m- import s2.jsp.zhangxiao.entity.Message;- Z- Z: i* G0 Z& L& q! V5 n! }' i
- ! g: e, C# w) h" Q0 ?" U
- /**% B. U" y" a O5 w4 T6 P3 d
- * 留言板接口9 D) i: i7 U& {
- * @author Administrator
7 b V4 i4 @7 t& K9 T) x, m - *! H: I) i5 u+ m! k
- */
5 u6 C! T S, h0 d9 l" L - public interface MessageDao {
9 r$ X1 `4 r: _6 ^ - //添加留言: @. H- [- ?: \" q& t
- public int addMessage(Message message);
1 y, ^- @0 t: j$ L: t' J- b5 K - //查询全部留言
, ?7 [/ ]& O) i% Q - public List selcetMessage();" B/ u- h& |' F5 P% g
- }9 M+ F g3 u) T
复制代码 项目源码下载地址:
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