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- package s2.jsp.zhangixao.dao;2 `. [% N7 F8 D7 g2 ?+ T+ _
- & U0 }! [) N' [ T8 {8 a
- import java.sql.Connection;
4 o3 Z( A* n6 n7 h - import java.sql.DriverManager;. G7 w( M; f, ^1 i9 u( G% b3 n
- import java.sql.PreparedStatement;
+ o) p. n" U% o+ N* e - import java.sql.ResultSet;
) s5 A/ p/ N: p8 W - import java.sql.SQLException;
; E& `1 [ @( i* q' g; b4 l; f - /**
- t5 B9 K2 B& ]; V# K# | - * 访问数据库
- b% F! D" K9 Q) ~5 V - * @author Administrator
" B, S2 y: h2 {, G& e' u - *, V3 e4 S9 |! W
- */
% y# D& i) p7 S* @2 ~* ~3 @; \& B - public class MessageBase {; e8 f) ]( w0 w/ g
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";: s% i% j2 D s; e4 B i6 w0 g( S
- private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";' w* {5 Q$ x0 [" Y+ g# |$ v' |
- private static final String DBNAME="sa";% u5 G2 O6 v: `
- private static final String DBPASS="";* t/ Z8 E: E, x6 `+ ~
- /**
4 P2 l9 x/ Y7 c0 J! u - * 连接数据库! l' X0 O- ~! P! ~/ ~: y; q! F
- * @return) A9 `8 U) ]$ T
- */
4 @ x3 {( e# V - public static Connection getConnection(){) D, f8 r% H+ z$ }( _3 Z
- Connection con=null;
& J( Q9 G1 F2 C' }$ s - try {
- x1 p% b5 |9 f7 _8 C* T3 p2 j0 t u - Class.forName(DRIVER);" x, X5 b+ p& \3 T: z
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);: O2 N3 }% l' {* m
- } catch (ClassNotFoundException e) {
. P7 g3 h B( s - System.out.println("加载驱动出现异常");! t# Y6 E' k* U( t1 }; y O' i
- e.printStackTrace();
! t t' v6 |; z7 } - } catch (SQLException e) {. w! y3 R7 h% c. J
- System.out.println("数据库连接出现异常");/ n) {6 f* a5 i* f" A. U, ~
- e.printStackTrace();
% D1 q8 C3 D& E' k8 `8 S - }
3 Y' \2 F T% X, Q0 y - return con;
6 u1 m3 n3 f$ u0 t5 a: [ - }/ n j( F3 L" [2 e- r
- /**
) S; h1 m" ?5 ?9 o' S5 r4 _ - * 关闭数据库
4 J I* p R" N4 W- c l - * @param con# k% o8 f5 P6 ~1 T
- * @param past1 t2 f0 O: h1 ]
- * @param rs2 n4 | { ]: V) q& d
- */, m1 n" T1 S1 b
- public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){
% H8 E! V. o) c- M6 \2 n! R: e - 7 Q1 _8 A4 m9 r; E" D
- if (rs!=null) {
+ M5 n7 i/ ^% k& t1 d& c - try {
* c4 j: w2 b' d+ g! h - rs.close();0 \& b% b4 F) h' R4 q- C" _
- } catch (SQLException e) {
* B, f, F& [5 y( ~& m$ O9 W9 B - System.out.println("rs 关闭出现异常");
0 ~: R4 E$ d4 g - e.printStackTrace();
* G" J$ s- `, [/ M' O$ X3 F - }
1 s( \6 |( @& u" W" |+ P+ L! w' t - }
! R( z5 j! Q; j( o0 K3 e: w2 Q - if (past!=null) {1 U9 {: s8 C- ~( C' l' T- M0 }
- try {
# I+ d( _' G$ ]8 z - past.close();
) c% ?" G; h2 e& b8 i - } catch (SQLException e) {: H6 H9 d6 c% B' |
- System.out.println("past 关闭出现异常");
/ [3 N: K. J6 t( d' [0 J - e.printStackTrace();4 n" d0 U9 `2 m2 }2 }
- }
; `( l i2 a4 T1 s - }
7 D2 M( N: c/ X - if (con!=null) {
+ h, _) I3 _$ x, M2 k3 t - try {6 {5 o4 v' j0 T' |' \2 A& Z
- con.close();
2 |% |6 }& Y: y7 B- N - } catch (SQLException e) { l e8 g5 O$ }
- System.out.println("con 关闭出现异常");* Y( q$ w& P/ P7 K9 |5 N4 W8 a" _
- e.printStackTrace();
7 V% H8 }! x0 x( | - }
6 c4 k) o2 f4 {4 W, \& b - }
. _. w' p2 m4 G - }+ a d8 S' b& T; j
- /**, E# q `* F: O4 N& R6 P3 n
- * 执行数据的增删改操作2 g1 ]4 R3 J7 U! W. t6 n
- * @param sql' P+ G3 s' }8 w- {" w
- * @param getValues8 J F' F8 e4 D, m) ?: T# w2 u
- * @return
0 t& Y3 H4 k% b6 [, g) v/ b0 A3 ~ - */6 I2 c; P% R, D# f$ P( u6 D
- public static int executeUpdate(String sql,String[]getValues){
% F3 v% E% G2 ?* ?% h - int t=0;. \* p' | `; J
- PreparedStatement past=null;% N5 f8 i& H, m0 ~
- Connection con=null;6 @: D9 B' ]; |5 A# k
- try {" X; Z c) [7 Z1 T1 {+ r
- con=getConnection();
0 p0 ~" X5 X' G5 C% b - past=con.prepareStatement(sql);
* o# R9 e8 x3 a ^ - if (getValues!=null) {
! m% | g O- v1 m& n - for (int i = 0; i < getValues.length; i++) {
6 W5 P8 O* w+ J' v- ~2 W - past.setString(i+1,getValues[i]);
6 F1 {0 m; }( d) O4 x: `& p - }% b" T5 Q$ x( V! R2 ^8 @
- }- R; t# G- @0 @& G2 `& V
- t=past.executeUpdate();
Z" T* ]! b" u- i8 F( n. c - } catch (SQLException e) {6 A9 x5 e& U0 t0 Z' g/ t
- System.out.println("执行数据库操作出现异常");
3 b. K5 o. y1 P7 n2 h - e.printStackTrace();$ H7 C2 \* T9 P7 e% n
- 0 O3 _2 n: c* n; c
- }finally{( J7 _. ]2 x. ^9 ]
- MessageBase.CloseAll(con, past, null);
! Y7 K; V; V) d8 \" W8 C5 m: z - }1 H7 T: T7 X+ k; y7 r* n' G+ _" c
- return t;
( ^1 I- I) s6 @% L1 A! m) `/ ^ - }
- h9 D. V! N% t - /**, J+ V- k! g9 J a1 X
- * 测试连接
% c/ C& U5 m0 F, j" o' z - * @param args9 B% H8 T* @; `9 V' d) g
- */
]2 M( Y r0 e, ]2 h K - public static void main(String[] args) {
$ I; Q* h8 c! U7 A( c5 @* U - Connection conn=getConnection();
1 I. \3 l$ e! E Z! u7 j* q! b$ o - if(conn!=null){
5 \) A2 S" y$ c7 [) d6 D - System.out.println("连接成功");5 j. [; J! w( ^% d8 p
- }else{
1 V5 {! \- M2 N1 b: H2 Y - System.out.println("连接失败");. R( J, {# F8 t, q- L
- }5 p" z% G! Q7 X; @: {3 z
- }
7 a- x1 ?2 H( J) {; b/ s - }
. F( G0 y8 H8 c, \+ |& i
复制代码- package s2.jsp.zhangixao.dao;3 ` M: f8 |$ C( K5 V
- ( x9 {2 h. x" R! ]
- import java.util.List;6 C5 e& N5 v8 s0 w A$ r' _0 P
1 b" Z1 E6 }6 q% W5 N- import s2.jsp.zhangxiao.entity.Message;1 o1 r# L9 T: ^$ Q9 t
- * _, q# u; D! c! x$ {7 F
- /**1 h/ ]2 Z% @/ E: H
- * 留言板接口
# X. d5 R- G; o$ t5 g9 G$ s - * @author Administrator
6 l4 X" E0 p0 D - *
( @* d8 C8 l( ]% w% S - */
; ?8 r2 r$ z- W, U8 Y' E* F - public interface MessageDao {2 W; H: |# P( g3 k4 T/ u' o- o' d
- //添加留言/ D. n7 s( F! b+ B! i# T
- public int addMessage(Message message);0 K0 }4 m5 C+ j/ [
- //查询全部留言( N3 `4 \- ~+ d' @6 T
- public List selcetMessage();. @7 z. N+ K" ~+ @
- }
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复制代码 项目源码下载地址:
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