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- package s2.jsp.zhangixao.dao;/ V+ Q. _1 S& H4 o5 F: a3 E9 o
# ]% J( N/ C5 h- import java.sql.Connection;. U/ j5 _" h+ H, l# `& Q
- import java.sql.DriverManager;
/ n4 s+ t- C/ Q - import java.sql.PreparedStatement;
/ U+ M/ M6 C* l. H - import java.sql.ResultSet;! S; o7 N7 h2 X O
- import java.sql.SQLException;! O* f3 e! ~1 O: ~
- /**
9 Z: v9 ]* q; y- J7 @8 J - * 访问数据库" B; v$ T' q% H9 U
- * @author Administrator E; @6 {+ T& ^/ C2 e& c5 U
- *
: o- }1 z7 u g3 h% \8 m! U - */
- M0 X5 ^/ z' Y9 h - public class MessageBase {
% w% E' M0 a L4 y2 B) D - private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
* t1 F1 e& }2 n - private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";
% }/ S' |( P/ ]1 ~7 F0 b; t( Z - private static final String DBNAME="sa";
3 y7 i1 O! E: T# S( C# ] - private static final String DBPASS="";$ N3 }4 B. Z4 p& o9 j- x8 `9 V
- /**+ }4 E+ F4 n- `0 [/ A# @ I
- * 连接数据库/ \8 F$ F( w# D X5 i% `
- * @return
! |! b8 [8 ~, C9 a% v' a - */
* u2 u2 w- j9 ` - public static Connection getConnection(){
]" }5 m/ s7 H5 V - Connection con=null;
! j. d' v2 d% A+ m - try {
$ D$ C$ p- [- {1 z7 y# A% w - Class.forName(DRIVER);/ X, z, ]' U u" y* W: t8 Q5 O! N1 Y
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);
l/ b; ] I: B9 b* M - } catch (ClassNotFoundException e) {
) B4 M' [$ ]8 O* H8 l - System.out.println("加载驱动出现异常");
& {* d$ s+ n3 c) d% k: g - e.printStackTrace();! ^5 u( r* E! C
- } catch (SQLException e) {, p: l- J4 H) k6 y- x9 U% c
- System.out.println("数据库连接出现异常");& H1 W3 T- O2 V2 {8 a6 L
- e.printStackTrace();* j) A3 X. {* m
- }
/ h7 y+ A3 ^* }7 E/ N( b' R - return con;' R4 C5 w/ z" d! a
- }0 y. ^$ A1 |; d
- /**
2 N: P" @4 Z$ s( z5 `6 T- j - * 关闭数据库! R- n S& J: V0 x8 s
- * @param con" Z: L% H X( u+ j" y
- * @param past X8 N! Z' F; [. k: i
- * @param rs
" t' d/ q7 Y" w - */* q8 ?. i( G1 Y6 r1 K- N9 V2 {
- public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){
2 ^" C: ~1 M! F) @ -
( ~+ d/ ^) i# I$ Y8 Z2 F - if (rs!=null) {
' w( J# l }4 ? - try {
0 u5 `% w0 P) O5 }, b - rs.close();
$ ]7 j9 x+ n! Y1 R( A3 ~; U - } catch (SQLException e) {
/ Z v" h- Z3 [* E* i) Y5 V - System.out.println("rs 关闭出现异常");
" k% w' y$ ]3 ? - e.printStackTrace();9 l: G( P- V2 Q+ X0 X" r
- }
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- if (past!=null) {* ^$ _, P; a3 M% ~( k! Z
- try {
- ]4 K0 o, f* v: T$ e - past.close();
7 \3 _3 m* V: p5 B1 x - } catch (SQLException e) {
3 H7 U# N& Y- g: X - System.out.println("past 关闭出现异常");% Z+ k& S# P+ ^7 ]7 u1 {: H
- e.printStackTrace();
' c2 B7 k0 \7 y r - }( S9 N0 x' Q4 f
- }( m4 W2 g7 _0 ^/ X
- if (con!=null) {
( K4 q0 E) y3 _3 V' U - try {6 ~7 I5 l) Z7 S$ I, G2 f- R3 b* x
- con.close();
' u" m% d4 Z% ~8 D+ K) _4 A - } catch (SQLException e) {# L: N: y3 _5 A& z% S, w& n& F
- System.out.println("con 关闭出现异常");& ^9 Z) T% z) e" t/ Y
- e.printStackTrace();
" \* {; g6 \9 }. H5 }5 P - }& @# D3 U' l( u
- }
: N% B- h1 A* M3 E# o. ] - }3 t1 N9 a5 c! z6 v. O
- /**! d! M; I8 D0 k; m) F b) W: U
- * 执行数据的增删改操作- { H( r- j' A, I5 c
- * @param sql
& |5 }+ \, \0 w2 M( v0 P - * @param getValues
4 |: f9 h/ ^0 h3 S9 R - * @return
+ S6 u" [! G& E - */+ [4 L( z- m6 V- T' w/ ?7 X
- public static int executeUpdate(String sql,String[]getValues){) {+ w7 N( `- N, G8 Y" Y+ U
- int t=0;( S9 \1 G, u* j$ @$ H4 d8 r
- PreparedStatement past=null; X% H! h6 R: L. d1 Q
- Connection con=null;: u6 A; Z! P+ G$ \! p6 C0 O! W; f1 R
- try {
' M7 t8 c3 |2 s - con=getConnection();. R# L( X& E% t1 P- d
- past=con.prepareStatement(sql);; l B7 S- R& \. Y
- if (getValues!=null) {- C$ W' r) C# H. f1 b! C/ \, x
- for (int i = 0; i < getValues.length; i++) {, q- ~+ w. C3 Z7 v, u
- past.setString(i+1,getValues[i]);
6 J% F) x" {* i. Y - }+ `9 W4 P1 y; w h' \
- } T( I0 ]; v! m( {% {. {$ t! n
- t=past.executeUpdate();$ R0 Q' @" q* e- d0 P
- } catch (SQLException e) {+ a8 I: w& ~2 Y4 Q r# g& W. k6 o
- System.out.println("执行数据库操作出现异常");* v1 Y- q# o9 |
- e.printStackTrace();% C K+ q* y: e# I+ g" F& y3 ?0 L' Z
- 7 V* C9 O+ L+ D% q* o0 s. U! Y
- }finally{3 J6 h5 e% R' f( T
- MessageBase.CloseAll(con, past, null);& j& X+ q% Q {4 {4 S, L
- }9 L& x- K4 Z2 L8 E$ o
- return t;- c b- E% j+ K b9 O& V5 ]
- }
1 ~6 Z" j3 K$ `9 I! a6 L. l - /**+ a. q5 W# A4 |: G
- * 测试连接
" {% x" F4 R8 _ Q& S5 {1 ^ - * @param args( g9 }7 ]& A3 n
- */
: n4 E+ G2 u/ H% {( v; @ - public static void main(String[] args) {
3 k0 p: x" l- T# w - Connection conn=getConnection();
+ A: c# x7 c4 b. c1 n2 y - if(conn!=null){; s1 U( o( g, f5 F2 h
- System.out.println("连接成功");# N( W" l& Q, I3 x0 T1 W6 L
- }else{
3 A* l# _2 L2 b0 M7 j& D7 M - System.out.println("连接失败");0 L3 r' y2 f6 p
- }9 v5 f( x6 L/ L6 g! K- s
- }
5 x$ [! r w9 u0 [: B - }
8 ~2 N2 B/ W8 K8 F6 M. @& Q6 E
复制代码- package s2.jsp.zhangixao.dao;) ^; H. l; W/ Q
- # W5 {3 i3 n. U! f" C
- import java.util.List;6 Q$ s9 v1 F+ n" n' F7 g/ H! ?' g
- ) A8 U; E* D6 O4 f4 P
- import s2.jsp.zhangxiao.entity.Message;
8 G3 v) X9 Z2 H7 C) c2 x' ~
- b: A+ H! t+ ^- X- /*** W( B. g3 f1 t2 G. ~+ C
- * 留言板接口
+ p' ]( @& Q7 D+ l2 M4 {7 E( ^; k - * @author Administrator
/ v! k. v7 N! E7 R: h - *
, D3 J2 L/ q D - */8 t1 R; r" d) |# U1 J
- public interface MessageDao {
- [ K) T; e7 F" o8 e - //添加留言# [; p7 E5 n- ], w" F7 r
- public int addMessage(Message message);
# N. t5 _7 D6 Y0 @5 I9 h - //查询全部留言; R4 U& @' K) B/ P4 U
- public List selcetMessage();4 }: E; K' t& j. C: |9 z6 n' U E5 |- T, w
- }; K5 k& W, m3 D% c$ s: M4 O# o7 v
复制代码 项目源码下载地址: . E2 ~3 c' U2 R0 S6 |$ c" \, o8 k
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