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- package s2.jsp.zhangixao.dao;
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6 q1 Y# f; M7 P" v6 z& _3 X- import java.sql.Connection;
+ ^# u& W' ]1 ^: |" n - import java.sql.DriverManager;/ N. M/ |$ v+ |" N2 J( D+ z
- import java.sql.PreparedStatement;* M: P2 Z: ~, C7 v% E$ V
- import java.sql.ResultSet;; c4 s& W, f8 [/ H1 a
- import java.sql.SQLException;
R: V+ v: O5 x( c# W/ j' z - /** i6 e! n: J- l8 C
- * 访问数据库
- p1 V! b" f: K# _* Z8 k% ]$ B/ {2 N - * @author Administrator
7 s+ t0 N% q+ g1 a h - *
, M `( I8 H' S! c- e - */
: K0 _" e; J& K: x! R1 [, ^ - public class MessageBase {; ~4 b- A" b2 a' }
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";1 H" V/ a. T) c* b
- private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";
2 S y9 x$ I i9 y" f1 W - private static final String DBNAME="sa"; M% ~, a# c3 [+ e: v& D$ h
- private static final String DBPASS="";
% q5 S" j2 e8 D) L! k# G- j4 B - /**
_- j, h- k! _' m1 \ - * 连接数据库
' N5 [$ `/ i& C9 w) X - * @return% n! a3 H( Q0 R( E* B. I
- */" ^7 V7 F6 z3 q% r8 Y
- public static Connection getConnection(){
# ^0 @; N5 K* }' e& z: Q) I - Connection con=null;# u: f f6 m5 e" N% A: y. G
- try {' N& j0 l8 u- a6 E6 L6 a' q' L
- Class.forName(DRIVER);5 f- h) x& {; i
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);% O5 j4 f% `5 [1 G6 _3 f$ i: e. x
- } catch (ClassNotFoundException e) {3 b( W) G1 k T' B1 `. [- _
- System.out.println("加载驱动出现异常");3 f1 L4 [* X! X# E
- e.printStackTrace();
; e& _% q6 d7 }* D% V. n - } catch (SQLException e) {
0 Z* I0 i. s2 u+ \- a& |7 d% { - System.out.println("数据库连接出现异常");
) n6 b3 G9 A @3 u - e.printStackTrace();3 ?) ?/ A4 B# @6 x! C
- }9 i' s6 k( ?& u" e, p
- return con;
+ U1 j/ {# n! `! I& b1 e' _ - }% Y* G! O, P5 B9 \0 R
- /**
5 ~9 B4 {1 O. d, I3 n - * 关闭数据库0 ?7 w- J$ |9 M' T. R
- * @param con) h8 ~! d, m3 q5 K% X; K) G! |
- * @param past! s- H* L) j0 n
- * @param rs
: v |# w# k9 U" A8 ?& J( }$ P - */
7 ^8 C' M! R! ]9 }; x - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){2 z& P( r0 f) |
-
( p) ], {) ~/ V# _) k7 j: Y7 l, | - if (rs!=null) { k+ v! N, D. S6 ^: {
- try {
! ?3 H' S* _: J) Y, X) G - rs.close();
7 ~# I- t2 b! w - } catch (SQLException e) {
6 ?9 S* ?% r& A - System.out.println("rs 关闭出现异常");
; z) J$ }3 F* z! ^ - e.printStackTrace();9 Z% G+ k# R, i# U' q
- }: a% q5 y9 Q! t: m
- }. o+ r4 n" [/ I, v& J
- if (past!=null) {
0 }' F8 D* t( Q y/ L - try {
3 I8 `! }9 g6 y$ k9 C+ i% P6 b7 R5 o - past.close();
( C' P- G2 F: }4 v! `1 J - } catch (SQLException e) {
9 D/ {9 J: E( k+ e( C X, @ - System.out.println("past 关闭出现异常");) ~( j8 f& k0 [: Q ^/ ~
- e.printStackTrace();, G" i$ B; r5 ^) p/ O
- }) P0 D5 a* B$ j% m3 T5 `" N: v8 ^; F
- }: m8 F+ s( l" ^ ?: O# J# A
- if (con!=null) {
5 O9 y6 f( R! R( k+ C- C& V5 y - try {
* R2 _4 U2 d7 f w4 D& k) v - con.close();, }- b3 h1 i; T6 W% G
- } catch (SQLException e) {9 g; D$ ]. p. \
- System.out.println("con 关闭出现异常");
) k) k3 Y4 j$ W6 _- h - e.printStackTrace();
; ~4 ?9 x- O" L% K4 V% B* t- _4 w - }
, q/ t4 z/ W: H. ~1 v# D - }
8 k2 Y- f# j8 E$ V+ v! H$ I; l1 V - }1 h. I6 m2 O9 G4 c8 V. w6 [' u
- /**/ }0 T" V- t/ r5 B% X' Q) H# k
- * 执行数据的增删改操作
6 Z t9 q2 F0 E; ^5 e. d3 i - * @param sql
1 I* L. l: U$ K; J V - * @param getValues. I1 C' y! J- {+ `& V& n3 m
- * @return
( k" y0 z+ n' O x/ E# u, T - */2 A, R7 R" _2 X* Q
- public static int executeUpdate(String sql,String[]getValues){( I2 o- q8 Y1 ?- ~% Y! q y1 i
- int t=0;
1 ?% c6 S! F( \; c$ P - PreparedStatement past=null;
: e8 u% y8 S( v) \2 n - Connection con=null;: ]' ` l5 V; G, S! E& \! O& J
- try {1 U4 Y+ \4 y8 Z7 X3 _5 m% n
- con=getConnection();2 |2 v+ v6 B4 ]4 @* H
- past=con.prepareStatement(sql);6 Z- D. u& _3 f8 I( D) e
- if (getValues!=null) {+ t" }; ]5 e" P' l9 `0 y
- for (int i = 0; i < getValues.length; i++) {( c% M! w+ T! O
- past.setString(i+1,getValues[i]);
. B% r J! p' i: R5 Q; \7 W - }1 k0 e0 z8 p1 ~8 I( ^. r
- }
$ q1 g" q& O" W2 _ - t=past.executeUpdate();
9 Z& y% P. Z9 p/ T9 L - } catch (SQLException e) {
! ]$ d0 z: p! O9 T5 r3 g - System.out.println("执行数据库操作出现异常");
3 {7 x. Y! i: q3 X - e.printStackTrace();
' V0 {, e5 R5 E" } - 6 y$ Y0 }* T" T
- }finally{5 I' a5 a X$ l, D% D4 D
- MessageBase.CloseAll(con, past, null);: f% U6 F4 B7 @
- }
. i' V) E/ H, m4 v! }8 b - return t;' ?0 n2 v5 K/ \/ t: ?! w: M: K
- }" Q5 _0 O7 }0 f3 \4 F+ Z3 i
- /**
( r, R7 M) x# Q1 _0 c - * 测试连接
$ |* @; r( s) P- u - * @param args8 o7 }3 j: v) h6 L
- */) {# B) J; W \6 R3 O
- public static void main(String[] args) {
9 `; A/ c& n9 Q4 r/ z) x - Connection conn=getConnection();3 ? ~+ K' h- ^4 T
- if(conn!=null){
3 L5 \+ a9 s4 W6 ]9 o9 F! w - System.out.println("连接成功");
5 S# E& Z! ~8 C) Y1 M) G - }else{# m# M$ _* w% T& [! E3 {
- System.out.println("连接失败");: @% c/ A& r4 G& |2 @# C6 |
- }
/ b: b; [5 h: e0 O2 i - }4 G) Y5 p7 t4 _+ D+ x, N+ t% L
- }- ?/ w8 S4 {' ]- \
复制代码- package s2.jsp.zhangixao.dao;
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( z5 ~8 F* b6 p, ~; R0 N8 _- import java.util.List;
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6 l( g8 G- B$ H) c# J$ \- import s2.jsp.zhangxiao.entity.Message;
3 X: [1 b; M0 z3 w" {: y
/ D, w ^9 Z' |' c- T; ]: Q- /**
4 M4 x5 u9 }% a7 `0 g4 ? - * 留言板接口
6 r& w S) a! b% v - * @author Administrator# }4 c3 g; f# x3 ^+ |7 ^" h
- *! y4 Y" B; Y+ `/ Z; V1 K. A2 d
- */! O- ?9 t8 m3 z! V: L( I/ Z
- public interface MessageDao {& d' f. ^( D1 N- o* D
- //添加留言* t1 \7 |9 v7 z& G0 b8 n7 T3 W: z
- public int addMessage(Message message);$ e& A# F5 n' t% H! o. H, c: I/ P
- //查询全部留言$ @7 P: J( F* Q0 d1 O2 c# e
- public List selcetMessage();2 n) a' y* z! ~/ E) X2 }
- }
: \ X. U. d4 {+ S7 C# s
复制代码 项目源码下载地址:
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