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- package s2.jsp.zhangixao.dao;# C b4 q, T4 L1 }* Q- ]/ ~
- 4 W$ p7 B* f- i+ \: G! t0 H0 Z# U
- import java.sql.Connection;0 N- }5 N8 V' \& b: _& t3 ]
- import java.sql.DriverManager;9 _( f$ n' t- v- A. u- O
- import java.sql.PreparedStatement;
- Y4 s. g4 P6 g' j - import java.sql.ResultSet;
+ T& |+ h5 Y& E9 l5 s8 E - import java.sql.SQLException;+ O) Z# z+ X. b7 J& S8 R& V4 S
- /**) y$ A6 [' @8 X/ f0 g1 p
- * 访问数据库
; r1 b- U6 R( G2 K0 X+ ]2 R0 a# @ - * @author Administrator# k- _4 r) x' i
- *: g; n4 ~% T2 X4 H8 }
- */1 ?' S0 l' w4 z. f, M# ]8 I' u
- public class MessageBase {: h' [* u! p7 w' R7 ~/ O2 m) x
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";# y5 G7 l+ r; x) i( J- G
- private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";( j: j- \" H( { Z
- private static final String DBNAME="sa";2 Y% l& t4 L! f' r9 p
- private static final String DBPASS="";1 {2 w+ S* J! U0 K% k0 r9 E
- /**
6 G# r7 j& K9 X8 K& \! x - * 连接数据库0 \, J( ~2 T3 u
- * @return& g7 `. ^! L* ], y0 a& E
- */
! E# }8 w, T4 n8 |, W& K/ Q4 X1 v - public static Connection getConnection(){
0 N& ~: D( T5 D% W4 p7 o0 e( X: |/ \ - Connection con=null;! c6 z4 ]' q; t$ p, \
- try {' L! d3 Z. W, @4 l- e9 E8 d% ^
- Class.forName(DRIVER);4 _) J$ M, s! a* S& {- b
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);) `* p" [: N* v \ ~5 N
- } catch (ClassNotFoundException e) {
7 V, _% q3 a5 l& Q' l) M% [ - System.out.println("加载驱动出现异常");/ v, `) J: h& o! d" ~" R
- e.printStackTrace();
# I0 W- [1 c7 ^% Z3 c$ ]0 E6 P - } catch (SQLException e) { e* p4 S# ?8 C/ x; {
- System.out.println("数据库连接出现异常");
6 O) `9 ~# h: g( d3 @* v% j" ? - e.printStackTrace();
9 `- Q7 s+ B+ C- G9 d" O - }. m5 G; K/ {; v, D4 z- z
- return con;1 R' I4 N8 t4 `" ~# m
- }
1 h! L) u$ o* c3 w - /**; K m" G8 [" w( T* X
- * 关闭数据库7 M$ u: \% F* D
- * @param con
' p i! L; [7 H. V - * @param past
. O, S2 c ^& ?7 X - * @param rs
# B" @2 B2 z4 z0 M0 E% U - */" R& s# y+ x- ?3 O: M: v5 M
- public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){; i5 v$ }1 \ _8 H
- ( N2 C, \' k* b" Z% |4 U; V
- if (rs!=null) {5 q* z/ V: Z$ g$ q" p3 N
- try {
' T3 g& {! @" F - rs.close();
5 L, V b+ `. t6 \ - } catch (SQLException e) {- A* \* o7 z8 E# J: j8 S4 i o: r
- System.out.println("rs 关闭出现异常"); ^. M9 M4 w& V0 l' J
- e.printStackTrace();, g' r' r# w5 C
- }* e5 G) E- Z& G! x
- }
. D% q5 o% C7 b* e9 ? - if (past!=null) {
3 d2 h. P: _3 m6 {2 k/ T/ I - try {0 d* Y/ @- F5 E
- past.close();7 W! |" A/ p+ b2 c
- } catch (SQLException e) {9 t2 W6 r/ m* o. `
- System.out.println("past 关闭出现异常");
a% _1 F' d+ u+ P% b - e.printStackTrace();! s& c0 C9 l X0 J3 u" A# {
- }* Q; @9 o5 S V; }0 Q6 x& C
- }
% a$ ]% H+ D# S& E8 Y; B - if (con!=null) {" K) \+ y1 l" ~* i
- try {) L3 z$ B) E$ ~& ~5 F9 `( g
- con.close();8 I/ A; p8 X6 U2 |* h+ d
- } catch (SQLException e) {6 B" ]' p0 M w6 `3 e2 P
- System.out.println("con 关闭出现异常");8 ]5 a* }8 D0 P' ~& o
- e.printStackTrace();4 Z; n, f/ H L9 M" x% }
- }, Q1 H# W; S2 S% w. y0 d
- }
6 _' v& y. K2 Y, Q6 { - }! G( n) W9 l3 P H* j4 _
- /**# ]* t6 l8 Q5 H1 `
- * 执行数据的增删改操作
, B. x4 }1 |! P" b! G7 K - * @param sql$ o0 O+ n' c+ X3 j8 u. o) i
- * @param getValues
0 o, A! E$ W4 K" g: g5 H, T - * @return
* t) Y$ o* C. ~- I( r - */
% i; A4 [; C! G, E- F - public static int executeUpdate(String sql,String[]getValues){5 w9 q3 g5 \3 f8 g$ |" f) a$ ^
- int t=0;& z1 O; u. ~$ }# @+ F
- PreparedStatement past=null;
2 [% z m' g! d$ l- X4 ?4 N - Connection con=null;* c. w& {/ |5 z9 P' O
- try {
9 H; i) t0 {7 [8 ?3 e( m - con=getConnection();& K" S) L4 @' @7 q
- past=con.prepareStatement(sql);1 d9 M7 z5 G3 {3 u* O- [, h
- if (getValues!=null) {& a) ~2 H9 W* V! [* c" p C1 q: P
- for (int i = 0; i < getValues.length; i++) { z- P$ b J4 d" J) ^
- past.setString(i+1,getValues[i]);
* l# q2 l" w3 ^3 p - }
! g' Q% Q* a1 Z9 u) ?" j4 C; g - }5 y5 \/ R+ x! L4 n1 l% R
- t=past.executeUpdate();+ ]( R. z# C) ?9 f$ N: `& r0 t2 p! D I
- } catch (SQLException e) {1 N# F* b+ F# Q
- System.out.println("执行数据库操作出现异常");
" j$ z! R- Z. U) K! W - e.printStackTrace();. |+ ~! d+ K0 ]5 C, s! B* S) ^
-
& F ^1 W% H f O: X - }finally{. K/ J/ L. j$ k( B+ j* n! d& l( k
- MessageBase.CloseAll(con, past, null);
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- return t;
h W* C! P% g - }
1 @5 x' L1 y& u' Z6 |2 g - /**% w% W# ]# U* w8 d3 F& B% b& i
- * 测试连接, p$ [' P; |4 ~5 i7 Y3 I+ g
- * @param args; ~( q4 s# C- w5 Q* a
- */, ?3 _' T2 H2 P6 `7 M8 V5 ^
- public static void main(String[] args) {4 q% @& |6 C5 v8 _2 Q2 L$ y
- Connection conn=getConnection();" ~ m# {+ L3 T3 H) |' I; {# e
- if(conn!=null){
0 _& R+ t) H4 q% v( ^/ f, F- L - System.out.println("连接成功");. A: A) W9 C7 b" C( M
- }else{
# U' b" k1 {" _, d3 \5 k - System.out.println("连接失败");4 f, r z) t' V% r: T5 s
- }
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复制代码- package s2.jsp.zhangixao.dao;
, }% z4 b7 D5 R% y4 ]$ K& z - , y- X$ {: |# w& N3 @! o
- import java.util.List;
7 O ^+ y# x6 D' m5 u
5 Z4 Z8 b" j8 h; ~- import s2.jsp.zhangxiao.entity.Message;+ ~! i, |* @1 i; A4 m- u5 U" j$ y
) R; I" v& @% Y n- /**1 i: D X# d4 Q3 Y8 p" Q5 L% s
- * 留言板接口# M2 [% L+ M3 s9 t
- * @author Administrator
- ?$ f6 |! i" B: @2 q) \ - *6 M5 O& D7 b M8 F- H
- */
8 A' m9 {. U( { - public interface MessageDao {
" U1 y8 B# Y: o+ ?! Z% D - //添加留言
4 Q6 R8 J) `9 D3 s - public int addMessage(Message message);7 C! H7 }- Q" E7 [+ h" ^
- //查询全部留言
: _2 l* t& M# E4 |7 |; ?# Y - public List selcetMessage();
) T8 H& m; h% l! T. M4 n - } h n5 w; g/ v3 J* W' x6 T. k
复制代码 项目源码下载地址: ' z6 D! C! _/ z5 u& y3 g
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