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- package s2.jsp.zhangixao.dao;0 ?) ?" I+ Z0 o4 N, Z# ?9 ?4 a; ]
1 \/ l! e! D1 X8 |3 J- import java.sql.Connection;! a1 F. D9 W4 J1 D' M/ v
- import java.sql.DriverManager;' v" N' j- M3 k9 `
- import java.sql.PreparedStatement; g/ z) P5 V5 \9 X6 s- M2 k, o
- import java.sql.ResultSet;/ H; Z, p8 E1 R- F: r7 _0 n; x
- import java.sql.SQLException;
5 Y/ q$ ]3 H2 Y$ Z; h# \ - /*** T/ a5 x. t( e# n/ U1 b1 F
- * 访问数据库
4 b: Q. N- e8 U - * @author Administrator
" d, c( i! g+ E2 b7 a - *
/ i1 n& X) j( W5 } - */# g) K$ k4 i1 q* @, c
- public class MessageBase {5 ~% m( _6 N$ `1 B
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
; k U! @' u; B% [ - private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";
% |2 Z$ x7 {% ?1 J2 E9 p% U - private static final String DBNAME="sa";
6 b% ?8 y! e" ]& q2 v - private static final String DBPASS="";
5 U1 Z" D0 \/ m- _ - /**
8 J# b2 N: u, M) h - * 连接数据库
5 P% v3 O" G* p - * @return
, b7 ~4 c9 ^- p5 g- x+ ~ - */ n% ]$ O* O; Y' I8 ~
- public static Connection getConnection(){
4 @5 }( ]+ A) Y9 \. D - Connection con=null;
# r8 x$ P$ `$ Q/ W - try {$ E; K4 r8 ]* T7 Y# n+ e4 G- s' ]
- Class.forName(DRIVER);9 P' V( p0 v: ]( n
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);, A+ W5 ?; K9 G* `$ ?6 V/ K0 ~1 w
- } catch (ClassNotFoundException e) {9 a/ X# U: H# y8 `' y
- System.out.println("加载驱动出现异常");
( `5 w# l3 ^7 |3 t7 X2 }7 U! b$ v - e.printStackTrace();* Q7 C; ]# o! S& X0 T) H& S& A4 D2 x% L
- } catch (SQLException e) {
/ x7 i8 P" }7 ^. Z - System.out.println("数据库连接出现异常");
6 M' E9 v7 I# ^ }, T$ q! c - e.printStackTrace();7 U: ^" H4 B# u6 E
- }
/ K( i1 e* c" a" D5 f p$ q* j - return con;+ Z+ V8 S# Q4 r: N3 N, L6 v4 W
- }
5 Z* s3 t& M" T - /**9 [" o: K: _% V( e. ?, C9 z* j
- * 关闭数据库
. t P, s- x9 b# M5 \* n1 D3 L - * @param con
' I$ Z, ^8 e n4 h1 I" x - * @param past) M4 L5 j+ v/ w, D# S) G
- * @param rs
$ H6 p1 ?& U1 Y4 s/ R' i3 L1 C - */
6 v3 j" r/ p$ V# U6 I Y/ O, @7 C% D - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){1 l* ?- P+ X5 L" H# |
-
7 Q% a) s# [9 C5 t* J - if (rs!=null) {
3 W1 ?3 U& g( i% X; K0 R - try {
" f- R& @/ R1 Y6 H - rs.close();
" Y E* Z0 U( Z) v( Q - } catch (SQLException e) {7 C5 Q4 ^0 s. n; g- K
- System.out.println("rs 关闭出现异常");/ P) l( @. s1 k1 G& B3 x% v3 i2 ?
- e.printStackTrace();
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- }
7 ]9 o; {, B: c! d& e4 J1 ? - if (past!=null) {
+ q, | K, S4 g5 x& h% Z - try {
4 A( @) F' v8 p+ h6 j& G - past.close();
7 l: g1 u# }1 z+ {3 I6 h) h2 F7 p - } catch (SQLException e) {
& s4 c P8 w& E* F. E- }) g4 W {* U - System.out.println("past 关闭出现异常");' o4 U' L! p0 ?/ ~
- e.printStackTrace();! e$ Y6 B4 X2 m$ R
- }
^; i) G: i- F& }7 H- p) | - }. C5 q) f. d4 T# K1 K/ D
- if (con!=null) {
. Y( [$ i7 t% J; g8 }7 | - try {8 r+ |5 z7 o! Y, f/ ?9 ]$ V
- con.close();+ f' j9 K8 {( a
- } catch (SQLException e) {
/ [+ _/ G$ Q; |+ f2 G - System.out.println("con 关闭出现异常");
( }! {2 b3 `/ B" X - e.printStackTrace();
7 F' a" M' c2 ~* K! N - }8 E$ I, _2 K& X- m* J/ `6 M; M8 r
- }
]; [8 c2 O$ H) G$ [8 h - }) F: b- d) \& v0 E3 o: _
- /**, h0 C( Q$ l1 q" y1 \9 H. t
- * 执行数据的增删改操作8 T0 a* A% d7 l1 Q" H
- * @param sql
$ f7 M+ Y) U, Q9 ^5 f' A8 i9 c, u - * @param getValues
* @; i1 {# L2 I: T - * @return
/ \3 x4 T. X3 [& s# B( |0 J - */
4 Q/ T1 K& U; N% G: k# A - public static int executeUpdate(String sql,String[]getValues){
3 K+ @# T0 M A3 W% B - int t=0;% r6 N: l4 L6 K/ A2 y1 l
- PreparedStatement past=null;
! Z$ n) n, r( o4 Q# v9 ? - Connection con=null;4 Y1 S; z) x+ w) {5 U
- try {
0 g% a! P5 `9 H9 A7 e, X/ b" E - con=getConnection();% `% j0 Z2 f+ J6 H h0 a: l7 J& D
- past=con.prepareStatement(sql);3 }2 a% X0 J+ S+ W2 B( h
- if (getValues!=null) {6 R$ z+ o5 l ]( g; N) J+ s
- for (int i = 0; i < getValues.length; i++) {
5 [; d& M8 J: H& v - past.setString(i+1,getValues[i]);
' m6 S: |/ ^6 T& h! e, r {+ z - }
' L' I/ z2 {, }9 d8 Q/ N - }
& s F1 }& A5 R# G W5 k - t=past.executeUpdate();. E7 \ _- x* a; G* u: u0 A# q( ]4 `
- } catch (SQLException e) {
( Y% X1 J; h4 v+ d9 v - System.out.println("执行数据库操作出现异常");8 t- z" U+ h. s0 {- P" M
- e.printStackTrace();4 e* A0 w( G+ k0 M7 `) W" R! i
-
# Z) G% n* w$ i - }finally{
, `# R6 Q% N& j - MessageBase.CloseAll(con, past, null);
2 \: @) U$ V) g+ ?! \- w - } w( K, t) ?$ h1 c8 C
- return t;; E1 a7 a) V- y/ ~
- }
2 U# b: N0 i9 L) g - /**# A. F: H) ?0 g1 ~$ x# s: L
- * 测试连接& K/ i3 n. z* O' u, T* j
- * @param args
' s. ^, A. W5 | - */ x# z8 ~# k1 W+ e
- public static void main(String[] args) {# T% ?7 R- M7 q! ^% T5 U1 c/ t. U
- Connection conn=getConnection();0 d8 y' S3 o- H& b9 z! G
- if(conn!=null){+ N4 Y! k0 W& B) c" d# {) H
- System.out.println("连接成功");5 Y* y0 \% ]; v; p ?7 q4 E
- }else{
% V& M0 \1 n0 J, u - System.out.println("连接失败");
/ y& M) L+ Z" n/ b% O7 A - }
% o$ Y( e) {; }& `: h' ^6 p" t - }$ e; U7 Z! O. p7 F+ t/ s, P7 }9 w
- }- {/ g k9 d3 I8 [/ {9 l
复制代码- package s2.jsp.zhangixao.dao;2 I) @0 q( Y' W' Z5 N2 v2 L
- / G6 E; z0 a/ S8 h" K
- import java.util.List;
: {+ T7 ]0 H3 O - 8 W f- t1 ?4 H
- import s2.jsp.zhangxiao.entity.Message;5 c, q" a4 O# ^- S4 X. e, Y
5 ?' ]* E! s" Y q+ ?1 C: v0 k f- /**" I4 r! C) P$ Y& C y4 N9 W+ h; O
- * 留言板接口
- T3 [% y& }' B! y0 h9 t' L - * @author Administrator% [6 b& g+ }. o4 b8 ?5 j
- *1 R9 V: q0 [* Y( l9 S
- */+ Y( F! H7 P6 n/ b% W L
- public interface MessageDao {% n$ k9 d) w" q2 ^$ J
- //添加留言- }% \0 M. t% o/ ^2 e
- public int addMessage(Message message);
" R: g' @3 s# E6 F2 m; [ m% m - //查询全部留言' ~* ?2 z/ A7 e* w5 S( s. k
- public List selcetMessage();8 ~7 k0 v/ U: U8 w \5 P2 f" P
- }
9 A \0 w9 s. _ j+ E
复制代码 项目源码下载地址:
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