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- package s2.jsp.zhangixao.dao;
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- import java.sql.Connection;/ D8 S- O6 y H; d1 K
- import java.sql.DriverManager;+ j) a: O7 D$ R- ^2 x3 Q5 ^
- import java.sql.PreparedStatement;% M3 Z+ `4 v# a- u4 Q8 D
- import java.sql.ResultSet;
i+ q' A% Q# D. W& G - import java.sql.SQLException;/ y) F8 L4 b& |; N+ \. i+ j
- /**! J3 Q1 @. `" X7 p7 A
- * 访问数据库
' Y" V0 x2 M1 ^( s2 R - * @author Administrator
* F) _5 F7 i2 @/ z$ r7 c5 d - *
0 S+ f; M; h* J( m: \ - */
6 Z" j6 p1 D9 {! ^ - public class MessageBase {8 n- }; ]' @# c9 |. _1 i \
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";; ^0 O4 T3 x4 {+ Y
- private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";9 l0 d" g# l3 t. m3 z* a c
- private static final String DBNAME="sa";* U! t: l* Z8 _: s
- private static final String DBPASS="";
9 l7 k9 A: t1 O - /**' g5 `; l$ i' D
- * 连接数据库' R/ y2 f+ r/ s/ z- @5 Q
- * @return' X0 f0 O. y# ^' x. k
- */
) p1 Y. M" w' r% k, A" v1 h - public static Connection getConnection(){
5 s7 ~( J1 ?# X5 C - Connection con=null;# J5 p$ Q {6 w1 p
- try {# Y2 V5 T: S3 u! I
- Class.forName(DRIVER);
, d$ v' G7 _9 q/ } - con=DriverManager.getConnection(URL,DBNAME,DBPASS);, ?. {" i* m, ]- Q0 \
- } catch (ClassNotFoundException e) {
- u1 u9 L) H& d1 Z N - System.out.println("加载驱动出现异常");
1 }. x) D, S/ R# u) @/ v - e.printStackTrace();% Z, S% O5 Q% h2 s! P% t9 ^# ~1 m( B' O
- } catch (SQLException e) {
1 e% S% H* }! @; M - System.out.println("数据库连接出现异常");
" p4 E/ g2 ?; r+ i: j& s - e.printStackTrace();
2 g. z& A r/ C. x - }
, d2 }, c. w/ L O8 g1 Y - return con;& d! V' {3 a, a$ P% m
- }
! H. ?2 i* }6 S9 K - /** O5 U I4 S& n
- * 关闭数据库
" |7 [ A( q; p9 l2 j - * @param con" l: A) Y0 o; N3 [, a
- * @param past7 i. @) R! q2 ^( v( z6 e/ Y/ d
- * @param rs- Z5 q' r X9 _
- */
P+ M4 R' }" k, m2 X - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){
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, f- H( c3 I5 \5 J - if (rs!=null) {
" M- t% q$ o; K' a# a% u) c* R3 i - try {
) |% M$ {) i5 d! y - rs.close();
1 z0 E, Q) w1 v! O - } catch (SQLException e) {
6 q6 T4 ]* a8 ^( T - System.out.println("rs 关闭出现异常");2 p ]6 Z: S9 S/ f! A
- e.printStackTrace();) |* O( ?- [$ E* S7 L ?, {* m
- }( ~# j4 T+ M+ A2 }1 x o1 Q7 f8 M6 i
- }( c- n7 }1 K! x4 x+ l8 R
- if (past!=null) {
: i5 p6 V9 a0 F9 P! E - try {( w! o ]2 Y' f) I" K
- past.close();
3 K, D/ K+ B8 p/ @ - } catch (SQLException e) {
4 _/ D9 i$ `+ t- Z0 T - System.out.println("past 关闭出现异常");3 S" V9 Q: r( A; R
- e.printStackTrace();& H- j1 F& d( k. b S" x1 h
- }: P1 X: w5 R0 `1 m0 F- q
- }5 h4 p# O q7 n' C- a1 }9 P3 l# p
- if (con!=null) {0 ^- j9 ^' h7 j, r* z; _4 p' I& v4 t
- try {
6 S& I6 T- d; U - con.close();8 O& l/ x$ P) _: p% s5 Q, |
- } catch (SQLException e) {
- v1 l, t- M) X6 x: W- M - System.out.println("con 关闭出现异常");
, I& l* z3 C/ A9 w; ~8 R - e.printStackTrace();+ y' D+ Q' x' e5 U5 I/ k
- }: G! B( I( N! A! k: _* E- S
- }
( \5 A( P( p8 K* {: {) y# |2 ~ - }
: z* ]. p7 L! j* U' J - /** I1 H! |! a8 q1 K- B; k: Y0 |
- * 执行数据的增删改操作- `8 }# b' V& r9 Y
- * @param sql. b, P0 n: _# ]0 }: ] T1 B. b
- * @param getValues
# n/ l M9 y# ^2 F - * @return
) k' C7 V+ Z: F; a - */
' @4 {0 j8 W9 F# ]" | - public static int executeUpdate(String sql,String[]getValues){
1 s3 q- B+ @8 @/ j9 @) J - int t=0;
" I; {1 y4 ^+ f p: P" Y8 p - PreparedStatement past=null;( W/ j, S0 c2 s2 s$ Y) u
- Connection con=null;
$ @! F4 P- Y, Z% J3 s - try {
0 O$ E4 {6 @6 O e7 A) h1 K - con=getConnection();
: S* w) m3 g$ J5 Q/ v$ p) Y4 b; H - past=con.prepareStatement(sql);+ D5 l5 Y9 p- A# s$ h
- if (getValues!=null) {& ~: q; x. T8 F, W M' Q$ }( ? @
- for (int i = 0; i < getValues.length; i++) {" F6 P: a+ A: F* o1 ^
- past.setString(i+1,getValues[i]);
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- }. M7 B5 R/ X/ ~, {: N$ @
- t=past.executeUpdate();$ B: v/ ?! n/ s S" a" r0 {
- } catch (SQLException e) {: \! B- t' i5 u
- System.out.println("执行数据库操作出现异常");- T c( ^6 a; i
- e.printStackTrace();& b+ O f' s1 p3 Z& o
- 5 t i4 ?8 y. R- c. [3 Z/ V
- }finally{
7 s- B8 g1 l& \8 @3 r- S9 Q* g9 H - MessageBase.CloseAll(con, past, null);0 g2 a: o9 {0 X2 N5 \; B
- }
; w% q8 Z% d4 G3 y% @ - return t; K1 ]4 o" ]7 f) |. G( k0 F+ Y$ x
- }
1 l4 e9 e* w2 _/ g - /**6 z9 a/ y+ L# |
- * 测试连接
) x. Y r0 K2 y ] h - * @param args; j7 u/ \2 Q& ]
- */
- b- [0 V/ Z; x0 Z7 g4 [1 B* X - public static void main(String[] args) {' i: H# o9 X/ L; u- I+ W# U$ k [
- Connection conn=getConnection();4 c. E! |6 n& Z7 q+ F7 l! }6 {8 X# q
- if(conn!=null){
+ F" X5 M8 }; |& S! y8 t - System.out.println("连接成功");
8 S4 S5 ?1 V8 u* y% C" B) W - }else{
! u. a7 E5 _: F( Y: k - System.out.println("连接失败");0 U" |9 r( n4 [# c. I5 M
- }
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- }
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复制代码- package s2.jsp.zhangixao.dao;
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- import java.util.List;& s0 n1 z W: v
" b" O1 y& ~# v' l, b8 w- import s2.jsp.zhangxiao.entity.Message;7 C6 q8 _$ a/ ~/ w* q9 u2 V( R
- - h4 v! y8 R! N+ r4 q; _
- /**$ C% o; P O( l- z7 O& R
- * 留言板接口, M" p5 i, F2 G
- * @author Administrator
* }4 x+ b2 _4 U! b( Z - *
. |' Q- y6 u8 u8 p( K+ h - */
4 j$ R" \" b$ E% ~ - public interface MessageDao {9 K. X. s/ G3 R0 F1 u4 ~9 K
- //添加留言' W& |* }$ k% E# M' T
- public int addMessage(Message message);
6 B9 e% c! ?0 ~. B: S0 J$ `( c! X - //查询全部留言* I7 n( y, [" _+ i' J
- public List selcetMessage();! |) B0 p# p4 {) j S
- }
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复制代码 项目源码下载地址:
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