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- package s2.jsp.zhangixao.dao;
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- import java.sql.Connection;. [' h1 m5 s; g4 C# H h+ N" Z5 N0 T
- import java.sql.DriverManager;" h I7 V# b( z; [9 i! J
- import java.sql.PreparedStatement;/ G) A. o2 X) `& q
- import java.sql.ResultSet;8 a# e- W* w) f5 @+ v" [
- import java.sql.SQLException;* q2 J v, Z6 m3 V. b9 p1 {2 m/ k
- /**/ n$ y+ t, j- X! [9 P
- * 访问数据库9 b7 `+ N8 w2 F: |
- * @author Administrator
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- */
+ Y6 L6 D" X- r6 u y( O - public class MessageBase {7 I8 B8 O1 Q% R: p
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
% `# I# R1 k! w# a) N$ {4 T - private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";
8 N3 r) k6 f7 P3 t' e - private static final String DBNAME="sa";
' {4 Y( ~3 [; @, @ - private static final String DBPASS="";
, {9 [" D3 T* u0 k# T - /**# u+ N- d5 t$ v7 M- K/ e: a5 I
- * 连接数据库
/ p+ P7 t, f' O& @' h# S - * @return8 I7 V. ]2 q3 k& K$ A
- */. |% x9 ~/ o$ ^8 X" n3 j0 k' A
- public static Connection getConnection(){
, M. |6 [; s3 D - Connection con=null;
( i' g$ a3 W+ v, J/ {8 D0 ` - try {
0 d) w0 }( T2 I. J( X - Class.forName(DRIVER);' n7 [2 l( x4 |$ M# Q7 O" T
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);6 |- Z) ^& E5 J% s$ f+ h: o4 g
- } catch (ClassNotFoundException e) {
. _7 l$ m0 k4 ^9 r% g3 ? - System.out.println("加载驱动出现异常");4 t4 s8 l9 F$ F0 k
- e.printStackTrace();
% i h e# G8 C3 [7 k - } catch (SQLException e) {1 v$ s. S' T. I5 H; k+ r i" t
- System.out.println("数据库连接出现异常");
9 h' F+ Y, W$ m7 { - e.printStackTrace();
1 i0 n: V6 n9 e3 ` T! Z" z - }
6 m" ^3 V! P5 o7 M5 _3 z - return con;
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- /**
" d2 E/ [" V1 q L - * 关闭数据库" @; N; ]4 \: e7 q% ]% d/ F
- * @param con# H4 X& K1 M% u9 r
- * @param past! u8 B& j( J' j4 A
- * @param rs
, R, S- I5 E" v; T8 K - */
$ f3 F8 c4 F# z1 R$ [: I - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){
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- if (rs!=null) {
6 f" N8 A1 H g3 D4 f - try {2 [* s6 i" S% I; c
- rs.close();/ C; V! K& i* U9 d, w
- } catch (SQLException e) {
2 V& k( G+ `) u - System.out.println("rs 关闭出现异常");5 H% p8 f4 m- \) ~: r3 ]! r
- e.printStackTrace();% o1 i/ z1 }% K4 Y; Q/ h
- }; t0 F. n3 j" J1 ^/ _% `
- }
7 r! Z4 t% _3 |+ o - if (past!=null) {
" B" ]; k3 V3 f) y8 S! n - try {
0 \9 G0 v2 ^ J/ D6 I - past.close();
6 E. y" d+ n* H0 E2 r4 X - } catch (SQLException e) {
# s2 \5 }- h$ m, T3 D - System.out.println("past 关闭出现异常");/ n9 |# B1 e' K2 @ w8 B
- e.printStackTrace();
) I: Q9 x# A" m5 t8 b+ ]9 y4 ] O% _ - }
, g! F4 ] v& A& Y - }
, M3 {$ ^( `$ D - if (con!=null) {
% {' e! ]$ i8 y - try {" I8 {" `8 h/ V& p
- con.close();7 n0 E1 |3 b3 y9 q
- } catch (SQLException e) {1 j' p0 B* e4 `( b8 [0 E4 Q
- System.out.println("con 关闭出现异常");8 H. M+ d/ P% ~& ]3 \+ }. _
- e.printStackTrace();
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- }% _3 ?- n6 [- ~6 d
- }% v& F. I- ]0 [9 Q& n& O
- /**
$ e; y& v$ O+ G+ U - * 执行数据的增删改操作
6 Y: ~6 Y* \& h6 W) T# l3 c - * @param sql
6 G( ?) W9 P2 A" \* G: F3 E - * @param getValues6 F$ K' v: {' o7 G3 f
- * @return
& F% ]% h. o! P/ g( h, \ - */1 i0 i) f# s: o* ~' x7 W3 a' d
- public static int executeUpdate(String sql,String[]getValues){
8 U& y1 Q, L2 b* h - int t=0;, r" ~9 O- T- u1 M$ X E- y
- PreparedStatement past=null; E0 }; \/ X. M1 ]
- Connection con=null;2 t. [. O; _8 x o' p) j, \+ {
- try {- {" k/ ?& k9 D& {
- con=getConnection();' J' H1 i$ d3 J) ^1 R
- past=con.prepareStatement(sql);! O6 U6 R" X P. Q2 G
- if (getValues!=null) {
$ s. ]# t, W$ C' s, n - for (int i = 0; i < getValues.length; i++) {
( v! @4 ?2 s- B" t5 n4 V' T - past.setString(i+1,getValues[i]);
; l6 h6 D% Y6 w9 ^ - }) G5 G. f8 N' \3 u+ ~8 w' q$ M8 |
- }
- t' M' B2 t2 g, n" i3 v( V9 @9 [ - t=past.executeUpdate();7 a) `% R! d: G2 ?/ r% b
- } catch (SQLException e) {
9 `7 m$ u q7 t - System.out.println("执行数据库操作出现异常");3 ^3 y5 C7 A6 y! a) n! ?( @: L# ~+ x
- e.printStackTrace();1 O- B H, I; I
- : W8 ^4 y& t5 L8 O! s' \" T( c
- }finally{* D) b C6 r2 i2 B4 u
- MessageBase.CloseAll(con, past, null);/ ^% d2 D5 d0 h) f1 a
- }/ a5 A' |+ t& E; @' \" ~& N: p, ~7 N
- return t;6 E: D1 Z) \& p9 }+ d
- }
5 g, k9 t+ L% [) s a" }& D - /**
1 _# J$ |4 l5 L) M9 e: z3 N a - * 测试连接4 x- E7 r% T8 `" p; m
- * @param args v- K; D+ r1 c( V' g" ~9 `
- */
* s+ f5 \, n* v* j! ]* M! ?' ? - public static void main(String[] args) {
# C. q5 ^. r# v" A - Connection conn=getConnection();: b/ D& n, w4 v. d% J3 N
- if(conn!=null){$ v+ K, p3 b' o B
- System.out.println("连接成功");
8 u+ L$ w0 q/ X# j - }else{! J5 Q7 a8 S) g% o$ T
- System.out.println("连接失败");
# y" M/ M! m% L2 g - }
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- }
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复制代码- package s2.jsp.zhangixao.dao;' b5 @5 N5 \! p3 B3 N1 r. g
- ~3 \' ~: G! I" b/ M0 g& I# E- import java.util.List;
# A) I# u: V2 P, j+ z
- r2 h8 h) {' _; K& s- import s2.jsp.zhangxiao.entity.Message;
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' @2 u4 c8 \! I/ B" J. q- /**
# P/ W/ r1 j, g1 ?, r, B - * 留言板接口5 N$ a9 E, U7 ?0 P
- * @author Administrator
# ~+ B N o4 r4 e) R/ l - *4 ^6 b: \, x* ~/ I% S; j
- */
% L; S5 T6 D4 U5 i9 m0 \! ` - public interface MessageDao {$ T7 o% F N0 p/ b7 w
- //添加留言" D+ E; t2 L) T& d( {" K' [0 a
- public int addMessage(Message message);
5 l% E/ Q/ v# j7 ~1 U" P: R - //查询全部留言/ }' t9 ?6 E" o1 H+ S8 m
- public List selcetMessage(); T1 B# t: O# N3 M0 d0 {% }0 L
- }
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复制代码 项目源码下载地址:
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