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- package s2.jsp.zhangixao.dao;) j1 [+ @( j, ?+ ]: I
3 z! z2 P; I" D: {, M4 \. p4 I- import java.sql.Connection;# }' T# e9 k2 f; R$ U
- import java.sql.DriverManager;) Y. h9 Z& G, [
- import java.sql.PreparedStatement;
- ^$ A9 L1 B' T x- t - import java.sql.ResultSet;
" E) n6 ^- N8 w# w z) v4 p - import java.sql.SQLException;
0 R" t! J: P+ Q" ] - /**
% f! y) X% S# R8 l4 c - * 访问数据库 ~, T$ f& J! Q# B/ k" `; ~
- * @author Administrator* @' C$ j8 A, |2 L
- *
+ t' m w& U2 N& Y$ K6 o+ P9 R) n - *// x& D* I3 Q" E
- public class MessageBase {1 U# B& z/ {. ?. G3 P
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
2 y1 ]: L& j+ M( k; `; J - private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";
# r2 w+ U1 N x' @7 m4 Z% d - private static final String DBNAME="sa";8 s7 d" B6 d% o
- private static final String DBPASS="";) {" P0 b8 E5 p8 w" c' z! [
- /**
; m% G& |* w6 K$ O, `/ {1 b - * 连接数据库
7 h5 T. j+ [) m6 g) O - * @return8 {0 t. K- z6 h( z" F0 e9 T
- */6 M/ F& \7 @% c' b8 V
- public static Connection getConnection(){
% g- u: ? {, W2 o" J - Connection con=null;
: C. S$ P% T' X+ k - try {: P) q2 O! p7 z3 O
- Class.forName(DRIVER);* R$ ?4 J6 {2 M4 m4 k# f5 g; g
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);7 h: |1 r9 C- \) [2 h( S5 i
- } catch (ClassNotFoundException e) {9 Q! ~$ z3 `) W3 t2 k
- System.out.println("加载驱动出现异常");
0 ?% S9 E6 F$ K# I A i; J - e.printStackTrace();
; Z$ j" ?! P7 Y5 k8 V: x% {% Z' g - } catch (SQLException e) {7 w. a* l& D5 V+ H) {
- System.out.println("数据库连接出现异常");
3 V$ @. a5 u9 m: X! g- P - e.printStackTrace();2 B% W4 |$ B! h/ n
- }
* G2 Z0 L, a. J: [! g! ^ - return con;
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- /**
3 M2 v/ q3 S8 `, {7 L( Y0 y& b( M/ Y - * 关闭数据库
: n( X/ d: k6 F; i. E - * @param con" x3 _0 S5 w) |9 B
- * @param past
0 Y2 s- W3 V7 K0 N( s! a - * @param rs3 ^1 @0 _+ k. E6 s0 t
- */
/ c, r/ A. l. m4 s - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){2 L+ q2 K5 \, w l! _; o( ], @- K
- ! m" a5 E/ k8 ]% w3 t E
- if (rs!=null) {
( Y N( C0 ]3 m+ F - try {
. v. u( L: g' B - rs.close();8 H- J, S' {, J/ b
- } catch (SQLException e) {$ x: O0 _# }- B6 W) ~; ^+ Q' o
- System.out.println("rs 关闭出现异常");
^- I- y/ h2 O7 c4 |( R0 R - e.printStackTrace();: `: p- Y( @2 K
- }+ Q- N3 l, ^6 c, d; A" ]3 C0 ~
- }
6 G7 X9 W& t( {/ F; c' v - if (past!=null) {
# L$ d# T. Y3 I; s - try {
, z9 j: J+ [3 Z$ O2 I - past.close();
/ e! S3 |! V/ z+ f - } catch (SQLException e) {
8 O+ K9 D- ?' k - System.out.println("past 关闭出现异常");
9 \. k) k, V1 o. E! v6 } - e.printStackTrace(); ^# Z! `! h* ?$ M% c/ z0 b7 i3 ]7 O
- }3 R5 W. ^8 m9 s' S1 _
- }" P# l. f \7 H/ M4 j0 P$ M4 O
- if (con!=null) {
6 f% T I/ a4 {) t# r - try {
% ]2 h, X$ P4 I* J" V4 G - con.close();& n7 g# E+ [& q7 w j' t2 U
- } catch (SQLException e) {* R# \8 e' o5 Q7 d }2 n
- System.out.println("con 关闭出现异常");; P8 J! t8 B P$ Y! `
- e.printStackTrace();( C$ L( g+ ^. `" t1 I1 X' Z
- }
* k" i% m$ \0 ` - }% z) V/ R! o4 l
- }
. o* Z# @2 D. k! z - /**
# y G3 t- ~' S5 X' P! N - * 执行数据的增删改操作
8 }, v8 O+ a% l - * @param sql0 f& H: ]2 Q- E6 A! Y
- * @param getValues
: c! q: @2 Z/ O/ M - * @return
5 {' H' ^* ?5 z4 h- y9 C- L# O - */
1 N/ f2 y7 S2 D1 |' g - public static int executeUpdate(String sql,String[]getValues){- T5 |4 J, f7 k5 K
- int t=0;) [& }2 z. F, N7 M
- PreparedStatement past=null;4 Y4 x' M1 F$ z( \- @' ]5 ?% h0 D
- Connection con=null;
* [/ l7 O; U+ b3 R - try {1 C# p8 z* P# y- f6 ~
- con=getConnection();
" M( v4 j% r _5 | - past=con.prepareStatement(sql);
; g# J* [. ]! D - if (getValues!=null) {1 [7 p$ w. u2 I0 U- ^) D
- for (int i = 0; i < getValues.length; i++) {, T- b+ _' I# L. ?: w
- past.setString(i+1,getValues[i]);
$ W* A% K+ Q1 F* J6 C - }
/ @3 p2 M! J0 @8 M3 }% W P0 m - }: P | p, d( _) o+ [# x7 j, R
- t=past.executeUpdate();: ?- a! r) Z6 X: G, \2 a @3 j; X4 `- d
- } catch (SQLException e) {5 s' v" o7 [8 S1 Z1 Z
- System.out.println("执行数据库操作出现异常");8 u/ R0 S [' q: Q. n
- e.printStackTrace(); d3 t9 x: n- Q3 U$ V- ^8 W7 K7 S
-
- d6 y; s6 R8 D& Q! \ - }finally{
0 d3 o: R5 Y0 a# C - MessageBase.CloseAll(con, past, null);( @( z4 P( O1 X3 h# ?3 e
- }
2 _+ M6 |- A( L; l. m, K# R' `6 k: X - return t;, {+ w* S1 M2 @1 d7 j( E1 P, M
- }( D/ H. X" c( w' r5 ?
- /**
0 Q i9 R4 o/ I4 g6 ^ - * 测试连接) K( I. u8 x8 E& b4 A
- * @param args/ w0 \* G# q( v1 M. G
- */5 x6 E, }" l* _% ?5 B
- public static void main(String[] args) {) R/ D9 v4 S. E
- Connection conn=getConnection();! n) J5 d, Z0 C7 A$ @/ L* A7 n5 C
- if(conn!=null){* j% N: l. b. i) R" v* M3 e6 R1 G" H
- System.out.println("连接成功");/ `, W" |5 b* U$ ~- W
- }else{ C8 k/ |2 s/ R3 P$ A
- System.out.println("连接失败");& h8 a; q1 \4 I" u# s, _) K
- }7 H. G8 s* U3 G( C" i& M' t& v
- }
% \ C. [# C2 z# G% ?4 a) f( q. H - }
5 s/ k' F. U' s1 q" J- L
复制代码- package s2.jsp.zhangixao.dao;
# `, t8 l g# F: A - & j. _* r, o3 X2 m; V# H
- import java.util.List;
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' R( d: J% V" t$ W& Y- P- import s2.jsp.zhangxiao.entity.Message;
4 J0 ?9 {( I& U. v - 9 X& [! u/ F) m1 @+ h
- /**! S. B- B" M; M
- * 留言板接口0 H' F5 P5 S- a( b* Y8 P- |+ R
- * @author Administrator
4 Y0 B' n) d4 S+ J; Q: C' v0 f6 K - *
) q. d5 m- K8 P+ H' J9 m - */
4 w2 _, Z% L- P& e |6 k- W) V - public interface MessageDao {; E m9 U4 q/ S: F5 y+ Y b$ r
- //添加留言3 q9 p8 P7 H' _' o( m k" i
- public int addMessage(Message message);- {6 _; U1 t0 v! W* @$ { V
- //查询全部留言 V {& ]7 g/ ]/ y1 e0 w: C; M" k8 [
- public List selcetMessage();
; P# y5 R8 s0 |5 E- F3 s - }
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