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- package s2.jsp.zhangixao.dao;. j% ?6 |7 H3 ]! ? @: a
- & h' L' l! @# G) f
- import java.sql.Connection;
3 f# y7 @6 C" k$ w2 o) R - import java.sql.DriverManager;) W4 f( V6 m* e' f3 a* d" \' T
- import java.sql.PreparedStatement;
/ ]- I* j" ~2 l6 f; M, b8 g1 X6 K+ W2 i! f - import java.sql.ResultSet;0 y1 u* V, \; a$ R% W5 j
- import java.sql.SQLException;
( j8 [# n' L( @! ?, Y - /**
. |- p% S$ k6 K5 _- l) M - * 访问数据库
7 t. q) a' V3 ^/ ]( ]; O3 ] - * @author Administrator
3 G# I" t* v1 p& ^2 `; L - *
1 d; g( m, Q; w2 @) s3 s - */
5 T& ?) H3 G& P- y, k - public class MessageBase {) a( Z+ ]7 J. i. ?
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";( ?) u p U$ v
- private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";3 f; ]' u: r' p* q
- private static final String DBNAME="sa";( a+ j: A- k m2 p: l
- private static final String DBPASS="";
4 x, R" l; w, L1 }, t8 { - /**& B) r& } j! a# R1 Y
- * 连接数据库% p0 y- L9 W& G2 d l6 L
- * @return
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- public static Connection getConnection(){; W# Q* b! C0 U0 Y, q: G5 c
- Connection con=null;7 u+ [6 C/ I$ X7 R, Y" L B
- try {, X- _" V3 x0 }& R
- Class.forName(DRIVER);# G/ U, q% j/ E& s9 U- [$ v
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);& y) y% i/ H6 y
- } catch (ClassNotFoundException e) {" F2 v0 H3 g9 H* M3 _/ Z
- System.out.println("加载驱动出现异常");
5 Z$ o- l9 H1 e. i; Q& Z - e.printStackTrace();, Z1 f. z1 W# F+ T; u" c
- } catch (SQLException e) {* I2 h* a7 ]* l |
- System.out.println("数据库连接出现异常");2 O! E# H4 n' B& W% y
- e.printStackTrace();: V; q! b) V, h% P$ r. ]/ m
- }
' {$ r1 v d6 r2 \2 n - return con;, }* t8 r$ X. v$ D3 U# i
- }
6 X+ N; S- ^" b, N% ?- C! C - /**
4 w0 B0 Y' p0 R3 b4 ?! y - * 关闭数据库; L! j' Y, S2 \3 w' K' m
- * @param con0 s3 p, G$ ~/ H+ Z9 y
- * @param past
' _) E0 j" I2 M5 D; G5 R8 F1 \$ v - * @param rs
4 V) q& ?% P; |( N - */
; F, t3 ?6 D K3 H - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){
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5 W5 n, [% G7 o5 k0 O - if (rs!=null) {% R1 q$ q8 z9 W/ N
- try {, S/ r3 g1 n& R3 H0 ^
- rs.close();
$ B& S- C' H9 I - } catch (SQLException e) {6 p; g6 {$ l) h) X4 Y# g
- System.out.println("rs 关闭出现异常");& M8 E& @" j# T+ t2 E" t0 m
- e.printStackTrace();
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- }
6 O, J9 x. `+ A. l$ L5 w' W2 A, V - if (past!=null) {
; E$ d2 T& Q9 M) M; l9 d4 o2 M - try {" ]4 q7 E* {3 t! y
- past.close();2 {# w; A, ] X+ ]* f
- } catch (SQLException e) {
4 f7 T7 v; n1 _2 l - System.out.println("past 关闭出现异常");
. P" H1 y& Q/ F - e.printStackTrace();' [+ _& w/ j2 K% b
- }* {6 l# }4 O% |7 @( K. B, N
- }7 D6 m) |; d2 u- r8 W# l+ d7 y" }
- if (con!=null) {
5 G7 a3 h2 E# J9 }% p$ X - try {
' F8 d% L' d" M; U$ Z9 Z$ Z: P, m - con.close();9 O4 K$ g3 ]) l$ `( l, Y
- } catch (SQLException e) {
- _7 m9 v `% a/ k4 ^, F2 y - System.out.println("con 关闭出现异常");
{2 z. X% s) f% @& U7 p& j - e.printStackTrace();. |* W& T, S H$ P! H# K
- }
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- }
$ A; r) U, K8 r. v, r - /**
; |8 a( R* e, W - * 执行数据的增删改操作
" T0 v% c( X) A% m2 X: g - * @param sql
8 t7 \* f: P" o& ~( u4 ?+ d# i/ j - * @param getValues
5 c {' Q# L, p* U1 g) i. B7 M/ @ - * @return
8 W2 E( ^8 e ^0 Q; D$ F, R - */
5 f0 T1 I0 E0 q) K1 n3 b$ G5 D - public static int executeUpdate(String sql,String[]getValues){
3 J! f5 N3 p8 i; C8 m8 t2 {5 Y d" @ - int t=0; O o7 a2 S `1 t$ @/ f
- PreparedStatement past=null;5 L2 o6 u1 q# [8 }+ p: z" {/ {& s
- Connection con=null;
( h% E0 o2 Y( J$ X# u% m3 J# R. P - try {
) |8 l! A3 m/ J, S- r ? - con=getConnection();! G: f, X! Y5 c$ r* h2 d c
- past=con.prepareStatement(sql);
5 k4 v& ?& a8 I. E8 V6 e4 ?4 c8 o - if (getValues!=null) {) z% B6 U! i9 M# ~; l* T- E
- for (int i = 0; i < getValues.length; i++) {9 k1 H- p) x& C5 k
- past.setString(i+1,getValues[i]);
3 l1 s* r: x' s" u - }
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- t=past.executeUpdate();
4 r5 ~, A p; P& u% d - } catch (SQLException e) {
8 U: r. Q r c9 ~) U - System.out.println("执行数据库操作出现异常");/ \. ?# v6 y' h6 B" L1 V; x/ D, P& G
- e.printStackTrace();
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- }finally{
; T `7 Z5 { H# w4 s, C" M3 g& u - MessageBase.CloseAll(con, past, null);
$ Z( @8 t* S' l M7 p - }
. I! ]5 _: {/ X - return t;) }0 r! w8 w X$ U5 J2 _
- }5 h) U2 X3 _0 ^6 m I; ^) Q' o
- /**& {1 S' `5 c6 l4 B8 L
- * 测试连接
) Z# N. [+ @; b0 o7 Y* [+ ^ y/ c - * @param args- F& p$ M" [/ y
- */
' k6 D' u, ~% n9 P- J( } - public static void main(String[] args) {
1 w' T/ u, d0 d - Connection conn=getConnection();
* {; A' b& `) I6 R& t0 j8 \ - if(conn!=null){
- H$ t7 v. ? m7 x6 f' @. V - System.out.println("连接成功");
" T0 H- Z1 A+ s: g: I - }else{/ W) }: e' V" x/ p d% d
- System.out.println("连接失败");
! \( ^7 `5 ?. E% y# P! Q( D - }% X8 D2 R! y! G3 F& ~5 T# J
- }
' W/ C" b6 O* P7 ^ - }
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复制代码- package s2.jsp.zhangixao.dao;' L; C. c) i3 Q9 p9 w- f
0 S3 Y7 C( T. V" L- import java.util.List;: y) D: M& U4 w) K1 B0 A, @" M5 l
8 \! Y5 o7 Z* o* w0 O- import s2.jsp.zhangxiao.entity.Message;* s% _6 B% o( w1 I2 x# i1 Z
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- /*** d: ?+ W4 P1 E- Z Q# A' a& Z
- * 留言板接口
1 q1 {$ G! N' K6 X - * @author Administrator0 y( D, W; o0 n1 |
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- */$ V, r. p3 c7 U; c9 ~" W
- public interface MessageDao {" ~2 |# a# t2 f, T/ ^. R
- //添加留言' y9 U) N9 c- o" B( k3 H! [6 A
- public int addMessage(Message message);% ]6 F" U3 Y4 L' l
- //查询全部留言1 P X, {+ v6 n- [& `
- public List selcetMessage();
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复制代码 项目源码下载地址:
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