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- package s2.jsp.zhangixao.dao;
' Y# T/ Q1 \- d% ?
1 e+ o( L- r3 C, `0 a9 c% J" p- import java.sql.Connection;
7 b8 M3 H6 a5 g+ w4 F) j - import java.sql.DriverManager;
% _, b2 \4 K8 J# `' r4 k/ K - import java.sql.PreparedStatement;
- i: [" {4 F& Z0 g/ M& m3 `' w - import java.sql.ResultSet;) F! X; a! o. ]! q+ L8 a
- import java.sql.SQLException;4 c" d6 B8 \$ O+ f0 [9 w/ v' y7 Z
- /**0 O3 F8 h8 D% @0 W# ^. v
- * 访问数据库/ A) E4 y/ R, q; z
- * @author Administrator
' m! x/ ^& @# @: e+ ? - *4 }4 T+ M+ T' C! ^+ w+ n1 }
- */
3 W5 v U) F: w% C5 G( t9 ^8 j3 P - public class MessageBase {
1 M; |9 W0 u, W& o% S - private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";+ [3 N, y% K7 n3 S& F
- private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";1 y6 d1 E3 G1 N: [; j \3 ^" I
- private static final String DBNAME="sa";
- P8 R! c# W* C7 r% M1 G8 z - private static final String DBPASS="";
) ?8 c! U7 O9 n. Y - /**8 ~6 K7 r# v- {; e
- * 连接数据库5 i" T+ ^9 G6 t; e' _) x) p
- * @return
+ l% k8 ^1 B4 G& } - */
* H7 E6 m" _9 C/ q, [2 u4 \ - public static Connection getConnection(){) s y j$ j8 ~) [
- Connection con=null;/ `1 c3 N9 K5 O. ~+ U3 _7 \
- try {
" I# Z7 i7 G- m7 L - Class.forName(DRIVER);/ c$ |$ A3 f' l% v% I3 o/ A
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);1 @2 v) b3 t) ?% V3 J1 z
- } catch (ClassNotFoundException e) {1 Q5 |/ y' l$ _" V2 R: @# o
- System.out.println("加载驱动出现异常");
" ~3 W5 i2 V$ @& V8 ]& Y; w4 ~ - e.printStackTrace();5 A7 [) j) d0 u% y( X8 c* h
- } catch (SQLException e) {; Q3 I% r/ K# S- [$ B3 B
- System.out.println("数据库连接出现异常");
; G0 w e$ `3 k- b( u5 H' k - e.printStackTrace();) \: g% u7 ^. d+ D( Y- l4 D
- }
, E/ m! e6 A: l - return con;
$ ^, E" `. {3 n6 v: ?; i - }
5 h, z+ v/ d0 i9 g+ [8 j7 N - /**
3 @ w/ X0 F1 H% a% B& V. O - * 关闭数据库5 L, n7 u9 T% i! u3 g- o
- * @param con
" {) y5 G: f& J6 J/ _( |% M" w - * @param past8 y" K& N1 u$ P+ M
- * @param rs( d3 s% }+ x+ [0 A8 [, @
- */( v1 M7 K% Y6 t' D0 F1 v4 {6 D
- public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){- w1 o% s: L7 m* K0 s
-
( w) a1 D5 F$ i' t - if (rs!=null) {
& ^" c# ]* @$ L0 R - try {8 u8 t1 E% V% \: H
- rs.close();/ t% w* x2 m" i( O; R. M
- } catch (SQLException e) { |7 H0 R' ]0 ?6 e, K1 l& \) N
- System.out.println("rs 关闭出现异常");
x; {9 }; U/ D2 P b, p - e.printStackTrace();
5 n" W0 x8 t& q7 v8 X e; H - }
- K4 B* R: E, O7 P* }( {1 o( j L M- m8 k - }
* j$ F: [1 ?9 p7 g+ [1 E - if (past!=null) {
0 Z) o" S: b: t0 ~* N, p# t* _ - try {$ p! K$ i5 j8 u: q3 J* ^. W
- past.close();9 z/ O1 W1 T) i0 n- {& M! w
- } catch (SQLException e) {" q o' o0 v9 Q Z2 Y1 H
- System.out.println("past 关闭出现异常");# S0 p4 H# z! }" k8 t0 N! L
- e.printStackTrace();
# N) y7 a# j2 o$ l* t9 B5 R - }# F" E8 L! K8 D3 ~
- }( @4 l, T5 u0 o! C0 H
- if (con!=null) {$ R" V! w" r+ v2 w+ e
- try {( Z' f' C# N- _6 o1 S% j
- con.close();
- M8 _4 `6 g4 W I% Z- t. h - } catch (SQLException e) {" l* u+ X4 x0 u# S2 G* B
- System.out.println("con 关闭出现异常");5 L$ b9 _; k F5 {" i! h) v
- e.printStackTrace();
6 @- V- Y" n( i5 q- M - }9 ]/ E, N! c) g+ U% ~
- }
, i) e! g& n0 X. x: Y - }
: R& b' I" w3 S6 H0 } - /**7 ^$ D* @% B: C6 g8 o! ^
- * 执行数据的增删改操作
6 ?' y# U! I: T \8 v - * @param sql, _. o& p ^! l; n2 ~' O! B6 s
- * @param getValues
$ a2 Z% {& s5 w- W- ~1 l g7 o% x - * @return
: F0 t/ J: }; ^# g m) o/ [ - */
/ h: Y, d! _* _( a9 l - public static int executeUpdate(String sql,String[]getValues){' R# u1 R# g( v# T* v& j
- int t=0;/ e9 q" }' x7 \8 a L" O
- PreparedStatement past=null;/ x4 o- F0 z3 c. C
- Connection con=null;
& j0 L/ C! e/ J2 Y - try {( _/ i) y- U( D# L, p6 i# M
- con=getConnection();! ?' d6 H9 P4 U# N6 u4 N
- past=con.prepareStatement(sql); {. ~, M$ s* Y( f8 ]/ p& W2 a
- if (getValues!=null) {' d% k! Q* l% e+ `9 ]5 p
- for (int i = 0; i < getValues.length; i++) {
( j D' `* ?; a8 z - past.setString(i+1,getValues[i]);
6 B8 ~% C$ H+ R' L6 U! k1 a5 S8 |/ { - }
6 z) E1 i/ I# P( h - }
1 o$ \* y1 i' W3 u. K0 Q - t=past.executeUpdate();) @! |" s; m8 n
- } catch (SQLException e) { O9 s' r9 E$ j, x- I9 a
- System.out.println("执行数据库操作出现异常"); H* `2 v- f$ ?" ]5 @4 k
- e.printStackTrace();& q: `1 h9 s! i! l( E1 ]; x
-
! Q' @0 W" S' n& u$ ] - }finally{; X" E7 V# r k& k
- MessageBase.CloseAll(con, past, null);! y+ J0 T+ x1 q
- }9 x; E. ?7 _" O% X7 K4 B0 _0 Z+ ?0 h
- return t;% I3 w4 p0 r0 q6 _
- }" x7 Z; n, f% j1 _! B V, ^
- /**
% R; E4 n) z# a - * 测试连接: O- F* v5 _: G2 u/ \' E4 R
- * @param args3 O& X9 Q% u& d+ x" D- h1 X8 [5 \
- */9 j; C( T" ] b
- public static void main(String[] args) {
! }; t( t( X# l* V8 v2 {* P - Connection conn=getConnection();) T* Y- `/ t: O) V) ^' M
- if(conn!=null){* |0 a; E# q: V ^- Y! d" K, a
- System.out.println("连接成功");
6 P _% h: i, M j% |) c - }else{
' t% Z# R+ d0 Q. C K - System.out.println("连接失败");1 z% |) W* }2 t, m; Z3 x" H; R3 z
- }+ s3 H! @- s- [$ S, S" ^. j+ U
- }0 V9 H. B, @4 T2 E- _* L1 A- z1 \4 d
- }) a& U. B, f6 O; @) N
复制代码- package s2.jsp.zhangixao.dao;
* M2 t$ r3 B- a% u' n6 u - * f. P( ]/ |* h+ |2 ?# `
- import java.util.List;
: i+ \0 h, n2 d! {
) r. V/ N8 w. ?* \% R$ }6 O- import s2.jsp.zhangxiao.entity.Message; P6 y/ ~7 X/ W1 a+ C- ]: |
- 1 I% z5 m) s7 h" Y6 k' K$ R
- /**
: ^" L* ? ?5 |7 Y) \! Q - * 留言板接口
- A# s4 r6 \2 g! B - * @author Administrator
; o; z5 t: @3 J9 e5 s# O6 } - * K @ G9 M8 ~8 J0 q2 _1 v, e' A
- */! V+ Y& L9 c8 Z7 V O) T
- public interface MessageDao {
4 B# R6 U/ j" z, |( ~6 I - //添加留言. |* n) Q. ~) D0 \1 W: ]9 E% S$ |8 B% o+ i
- public int addMessage(Message message);
, f0 W9 \9 z8 b3 C/ }. j7 [# w1 U - //查询全部留言! P- _' M! V+ s' a1 @) u$ A+ ]# i# L
- public List selcetMessage();9 A) s) \! O& F% B2 { ~4 {
- }: ^$ m8 r# m3 F! Q& {# j
复制代码 项目源码下载地址: & W0 K; Z! K& x1 g$ [* u
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