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- package s2.jsp.zhangixao.dao;% `# ~# I, O1 P6 G) ~5 H: ?; _' ^' C
: Q. E6 |. @, c0 }* d! ~' n$ A- import java.sql.Connection;4 x& S/ {# M! P6 a3 c
- import java.sql.DriverManager;
/ A+ s* P5 V0 j - import java.sql.PreparedStatement;0 ?" Y4 S7 l, b# {/ V' j
- import java.sql.ResultSet;8 I2 K( W$ c, t, Y( ^5 t. h
- import java.sql.SQLException;9 ]* Y* E3 P/ X8 I: _/ N0 C* E3 N
- /**$ d% n1 `2 K; P# B+ l
- * 访问数据库$ g& T1 W6 D$ E0 C# P D6 _
- * @author Administrator% S% D: \6 e1 |3 O
- *8 j! |% A% I' C& _1 n
- */2 |6 N! b& q# o( h- m V" W* z
- public class MessageBase {
- e$ u, d) A) ]$ M2 [( S4 o) \ - private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
3 h% G) V0 e5 M1 a& S* X) X - private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";
; u) F7 M& j( V4 B - private static final String DBNAME="sa";5 _; D) t& C! d9 t
- private static final String DBPASS="";! o+ C/ ~0 ]$ r6 X0 @+ ?: N: l
- /**
% {1 n( m, l x3 [$ w7 u - * 连接数据库
8 V/ _* H; x, b& C4 q, k, q - * @return/ Z% M$ w2 D* L1 N6 s% J, V' [
- */
q+ b0 Z! W! K, v - public static Connection getConnection(){6 H+ w6 P: x( d0 A) H+ N- _
- Connection con=null;% ~: k" F/ m/ R4 B9 ~+ p
- try {0 \- q; K# x& h4 r; |, N
- Class.forName(DRIVER);: P! }' `& l0 d: W) V. L
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);
, `2 S# Q; Q* C. n% b1 R( T- s - } catch (ClassNotFoundException e) {: J, f; _- Y, j# f9 A/ Y) X! C8 R
- System.out.println("加载驱动出现异常");
& Q9 b: K1 e" T/ P# ^ - e.printStackTrace(); ~2 U1 @; J0 E/ Z# U
- } catch (SQLException e) {
- u0 H7 Q5 L' r0 ? - System.out.println("数据库连接出现异常");
/ A% c$ F5 B, O# t. J" r: n1 v- { - e.printStackTrace();
6 R4 [' q% }" B! q. I5 q - }
7 I, h) E& X, }' b: e# e ] v - return con;
( \3 r- Z0 _% x7 b$ x, d - }3 `3 n% Z- I G% {( l% Q* t
- /**3 B6 |1 G+ J6 z% |9 n
- * 关闭数据库 [- I; D2 o! Z2 L
- * @param con3 y7 {( @1 i, u0 B. Z# v+ ^4 C
- * @param past% f5 [7 z& H8 U$ g: E$ e, m
- * @param rs
3 ]/ j; {8 Y8 J! X7 M+ t - */
0 P* b5 X: `2 v. i I$ H Q0 P - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){* \ @( J3 O0 E/ C6 L6 W
-
7 h8 D2 f( n5 u6 s+ f# `3 T+ _ - if (rs!=null) {; v. v7 @. Y* u
- try {
0 L5 f) [* Y$ [6 `1 g - rs.close();9 R' G- N6 `+ y6 B7 O
- } catch (SQLException e) {- y" A9 f5 a+ W8 `
- System.out.println("rs 关闭出现异常");8 p! W. _- S4 g# h5 x
- e.printStackTrace();1 b C7 D( Z2 N' C' \' F( V+ u
- }
1 p# m. G3 s Z' G; ~ - }
/ r+ F1 f7 i& G* |6 o z3 I: p6 X# J2 q - if (past!=null) {
2 ]0 B: X/ \6 e# @ - try {
' a' d1 a: [% h/ r, P* W3 I7 O - past.close();- i( \0 \0 L1 y3 _1 N, m
- } catch (SQLException e) {' q Y5 V0 N+ ^4 S- e( ~
- System.out.println("past 关闭出现异常");
3 t" W& Y; P: \ - e.printStackTrace();2 N. P# T; |1 a; S* a1 K7 r3 A
- }
# Z$ } L( y) F/ t6 O3 o - }2 Y2 ~! [$ w, m% n) A# v) e: E) K
- if (con!=null) {
& {& r( |& z$ q9 _5 `5 `7 A - try {
8 t- j+ E/ V6 r3 G: G - con.close();
0 t+ u% Y* ~- o# {6 A - } catch (SQLException e) {
7 g, a, c% E9 J1 E4 r U/ c - System.out.println("con 关闭出现异常");
9 Z2 l" d8 m/ N! K1 Y; f - e.printStackTrace();
3 a% l2 O' w6 q: y - }/ u' Q" _5 `6 f9 Y
- } y8 ~7 w5 d+ g, ^; V4 E' F! h! e3 _% v
- }2 L/ `0 b7 g2 o/ N. r; |) V' {
- /**: v! j; c$ J0 h( q2 K8 z) {% I
- * 执行数据的增删改操作0 s2 u9 [5 B& i3 s; V
- * @param sql
1 [* R6 X Q' m, n - * @param getValues. p5 ]; L' D5 J1 w6 d
- * @return
: N# D0 X; g% ?1 P' C7 Z - */9 ], Y; q* x8 u: a4 {
- public static int executeUpdate(String sql,String[]getValues){) {$ W9 C% O, d, `5 Z3 {9 v* K% p
- int t=0;
+ _, M9 R) n* P" o$ j - PreparedStatement past=null;
/ s$ j1 k% T& @5 Y8 c* ]) O+ H8 B( [ - Connection con=null;
' p5 s: d5 S3 W+ ~ - try {$ k) ]1 E7 _ B% ^" x
- con=getConnection();, {* ?3 ?1 Y7 G# X- j% e" @2 K
- past=con.prepareStatement(sql);- y$ t/ L" A1 P8 c/ y5 ^' [. G
- if (getValues!=null) {; g K+ k! E# g7 @2 }, f
- for (int i = 0; i < getValues.length; i++) {
$ L" v a3 I1 s+ v+ i! D - past.setString(i+1,getValues[i]);
2 r1 Q9 ] W2 x1 S - }3 ~% ]; _7 q. y! ?, E/ y
- }
5 R/ m/ P3 s J- v5 q - t=past.executeUpdate();7 G* M0 ^ H) M+ l
- } catch (SQLException e) {
; g4 Y9 v" f3 u' L' [ - System.out.println("执行数据库操作出现异常");
5 ~: u1 _6 M# T* V6 R' e3 ?) L - e.printStackTrace();; y3 A) |- g$ P$ R' v$ g5 U. W
- ; s8 k$ v# V% k7 H) E% u2 K. ]
- }finally{$ Z6 D3 E6 n$ Q
- MessageBase.CloseAll(con, past, null);
. @$ U! U# b- {$ v- k - }
5 }( K' B/ i0 k3 Z% x6 B4 s - return t;
8 F* A. _- F6 t - }5 [( |4 i- k. z2 a
- /**& ~) q# Z/ m& \5 }2 l. a5 i
- * 测试连接# c/ T" A! C( {5 C, @ R
- * @param args6 s, o) F! w8 Y, i+ V
- */' E) }5 b$ z& a1 g
- public static void main(String[] args) {: y3 u1 ~* J- G
- Connection conn=getConnection();
! `8 S, l7 ]1 H4 C - if(conn!=null){
8 }+ A e: i Q- n$ Y" l5 ?! X# i - System.out.println("连接成功");) X0 c, o% j6 I& P) u/ m5 |+ ?
- }else{* c, O' `$ A4 x1 l) T
- System.out.println("连接失败");/ V W0 `. J) y
- }
5 a7 D( C+ W& q* [* |- D* W K& a. ] - }
& B$ G' Z( m4 U9 k - }# k) x$ h J9 d
复制代码- package s2.jsp.zhangixao.dao;
5 R3 B9 C3 k, [6 F P - ' w/ N& i) v8 y* J. s
- import java.util.List;3 [& X8 h B% X4 M. M
/ a$ c4 A" N' R- ?- import s2.jsp.zhangxiao.entity.Message;
/ A/ a5 s2 o# \0 H6 ~ - * t9 d1 i/ L9 j% s% F
- /**
( l0 k3 ^& b! z5 s, O4 V( G - * 留言板接口- \* \1 |/ n o% e
- * @author Administrator0 m! X! {! Y2 v2 m4 Z
- *0 l' b3 H( {3 b: ^
- */9 r' l: i$ H7 s) b Y' \+ i* e
- public interface MessageDao {
/ a$ o% F, g$ W - //添加留言
$ x V# X ~! W% g - public int addMessage(Message message);2 K% q5 \- n7 H# Q: W" _
- //查询全部留言& R- z b" G6 B3 e/ W- P, m
- public List selcetMessage();
1 P, t% ~" U% | ^0 Z3 a; X/ n - }
' b3 @4 W! I3 H( R3 W f/ U% F; G b
复制代码 项目源码下载地址: 4 J! l' k# A7 I5 x. f
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