该用户从未签到
|
- package s2.jsp.zhangixao.dao;& c3 M7 `2 W2 S# ^% \
- / g$ ] T6 l" \3 p, X
- import java.sql.Connection;) t/ Z5 l( i& A
- import java.sql.DriverManager;) ^( @( u# ^0 |; {/ ~
- import java.sql.PreparedStatement;2 R: _, O4 [ w
- import java.sql.ResultSet;2 O8 a5 v# f5 j- B1 ^+ e
- import java.sql.SQLException;$ w' y5 h- S: E8 q( Y
- /**& z8 P- J2 l F; O# w' u/ N
- * 访问数据库
& k- h" s' }+ j5 z - * @author Administrator
) \1 R$ p1 _; A& [, {$ p7 o - *
0 b8 `. b% H$ V' T+ P - */
* l1 |& Z! g3 G - public class MessageBase {
, m2 q& r4 v) g- p( F3 o - private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
! y# A( B. S: q9 W+ H9 L% W! @ - private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";* u* n% p2 O3 j. [$ x
- private static final String DBNAME="sa";
* l8 \0 B! Q" m$ d - private static final String DBPASS="";
8 l9 Z! h: i8 V1 f( X t( i3 F. J - /**# g+ V E) T/ D6 `3 m
- * 连接数据库& `( @; Y, c; H
- * @return- [ @+ R7 ^3 U# r, E N: F
- */
9 S$ p9 I' D" d; F2 F - public static Connection getConnection(){
) }9 I5 g" V# T+ M% v+ p - Connection con=null;
+ }: D& H, X7 o1 M - try {
* z( f, L" v8 L: Y/ Q" c - Class.forName(DRIVER);$ T3 x$ j3 \+ h5 h, r$ E
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);7 d) C! t; r$ b( F
- } catch (ClassNotFoundException e) {6 m |7 G. k2 V2 P5 V
- System.out.println("加载驱动出现异常");% E' X% w) {! c9 Z- c
- e.printStackTrace();
$ `3 \0 R3 f- \ - } catch (SQLException e) {, v& g+ Q" k7 a+ t. ~( l0 F& n
- System.out.println("数据库连接出现异常");
V9 O9 U& B4 ` - e.printStackTrace();
5 n. J) F% A" E* s - }7 \1 ?+ J9 W) E- B
- return con;
+ ~: c. l7 \6 S2 l5 ^ - }4 R1 S# b0 H2 A0 s% w7 U
- /**
/ b% Z# n4 [; W# O+ C+ {; | - * 关闭数据库1 d! w) ~% d! K2 F
- * @param con& |* S9 U: p: g9 U; g. E! f3 @+ r
- * @param past
d# E4 e/ ^1 _0 `* g - * @param rs/ D$ d( t( J( h3 X1 {! `1 O! |. a3 g
- */. q. q( i5 }+ [" S- V4 d. O+ |
- public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){$ q L0 I7 O# z& V5 I5 v
-
k2 }/ a4 P p' ?0 e( u - if (rs!=null) {, G# B4 a5 W, l& {4 r! M" G
- try {3 K$ P4 `; @8 [ W& ]7 _
- rs.close();; _& ~* q o$ ~
- } catch (SQLException e) {9 `) q( b: f, |1 B$ a7 V# s: R
- System.out.println("rs 关闭出现异常");# K# y! P r$ C6 e v( y% o1 ?; @/ y
- e.printStackTrace();
9 A+ ~& K: s' c. a+ _, G3 X - }
) X3 n5 l- N/ M- A: Q+ C - }
7 e: w8 w; q! ] - if (past!=null) {
' p! l' {# \/ ]- U: p - try {2 a4 `9 D7 {! d3 N; r' e
- past.close();
9 v! I5 T: N! H+ M$ A. A" Q - } catch (SQLException e) {
: q, a2 Q" o" i! j# k) F - System.out.println("past 关闭出现异常");4 R( V4 B" S! ^$ J9 W& l. f6 L
- e.printStackTrace();
D" K4 j4 V: {. s" T - }
" o" z3 h y/ P! Y, i3 W - }4 u2 S( w. a0 [, E7 F# G: o9 M
- if (con!=null) {$ m2 l* t4 G8 |4 v
- try {4 z4 n3 l, G$ c' C3 p
- con.close();
; m! i2 @/ y% h) Z* l - } catch (SQLException e) {
. m9 y' f- M4 ?1 W - System.out.println("con 关闭出现异常");
6 K% Y! n4 v6 m! |0 ?4 ?+ T - e.printStackTrace();
) D7 r! i* T+ S - }& Z# A3 w+ [$ P5 U/ Q3 T/ M1 c; y3 f
- }
( V% j7 U; x% D$ m A+ L6 {' j& @ - }; k' F$ ^. l) y; L! m
- /**3 j7 l6 y+ P/ a- D; |$ Y5 g
- * 执行数据的增删改操作
/ l- X u1 F! z3 a1 m, X - * @param sql# J1 }! q8 v8 l
- * @param getValues
8 F8 W* V6 j. W8 H6 v6 J - * @return' ?9 S( N# p/ S$ S6 ~; ~! \
- */
, g& L9 R6 _$ Q6 ^5 r; E - public static int executeUpdate(String sql,String[]getValues){
5 y+ s) Y* ^ t4 P - int t=0;( |6 G, z$ o6 J+ o/ X/ T, `' c# H
- PreparedStatement past=null;2 u0 p7 C: d1 k9 P0 @: ^( g
- Connection con=null;
# l0 K( J+ Z) h$ }0 `: ] - try {
3 y4 D# @$ V- ]; m$ x - con=getConnection();
, t" ]3 r) U/ }. ^ - past=con.prepareStatement(sql);4 j, u' v+ I- Y5 P7 E7 M+ ~7 m
- if (getValues!=null) {$ F$ M' V8 ]. V5 c2 ^! u
- for (int i = 0; i < getValues.length; i++) {
+ m3 {+ |, i6 S% L# J( w - past.setString(i+1,getValues[i]);4 c0 X V5 u! e# i( U9 f. E' s
- }: N8 u$ C. R4 z0 L: O3 z" e) _
- }; B& Q* J$ {1 q
- t=past.executeUpdate();
3 C5 x! C3 S/ N, _% D& }8 q - } catch (SQLException e) {* _: B+ i( Q% K# Z
- System.out.println("执行数据库操作出现异常");0 h' Z& s* l, j/ x* B/ h7 P* F5 d# p
- e.printStackTrace();5 Y% D6 }: l) Z* [6 ?( Y
- 0 e( }, c* w* Q8 x) q! s
- }finally{
- q, }4 l5 V! W - MessageBase.CloseAll(con, past, null);
# ]! M2 Z& U; X0 i, @" C5 B" l - }' m, m! ~: H8 o, z; c& W
- return t;
5 M0 `* K! `" u, b* J% @ - }
) s# Y! G* S1 u9 T' i8 Q) T$ [1 o - /**
: F( u y% S8 {: c0 M' D - * 测试连接
- p/ e& R# }0 C - * @param args5 D$ ]& E# G& k
- */' [1 V2 m0 ]& S1 F# o
- public static void main(String[] args) {8 _* K' r- D" z4 Z" \
- Connection conn=getConnection();
: q' M4 j3 Y' ^9 S% j& [ J+ K- i O - if(conn!=null){
( b8 Q7 V8 i% a H - System.out.println("连接成功"); k- a& E9 e7 v4 h1 L9 P
- }else{
, k( y9 A5 T/ q' G: H- w - System.out.println("连接失败");
3 ^, |# H! g; V - }8 p5 ^2 U" C2 [/ Q# a5 r
- }% y6 o( {& k2 }& B" {
- }: j/ G% m3 ? a, W; Y
复制代码- package s2.jsp.zhangixao.dao;
- |$ H6 P7 T8 w1 m! H0 v2 M/ s
7 h5 y1 U/ ~6 k2 s* M- import java.util.List;
9 v: f$ z) }% I2 M) u) y1 l, b
) e# h2 g! l* @- import s2.jsp.zhangxiao.entity.Message;# z, \1 t) q$ r/ G' S
- , j4 H* K* }0 `2 J' {, E# M# ^
- /**
$ B' K3 r" j6 X! g+ ]8 o/ v - * 留言板接口4 j! W% O* x5 D( {$ A5 Y# H6 O
- * @author Administrator
) W+ N* J4 Y0 _/ U, C - *
! |: d3 m+ C& l& c$ [& U - */( y* V' R. ^! }, R6 |
- public interface MessageDao {
3 U$ {# p0 u' i/ z* n! z- j3 m: l% l0 e - //添加留言- y+ k- E) V- t2 w! h9 K0 s
- public int addMessage(Message message);& O# L% t2 [$ ]2 j
- //查询全部留言0 E8 i+ P2 t1 H) M) G6 Z
- public List selcetMessage(); J# B O3 n# E/ w
- }9 i) O3 N7 t( G/ P/ O7 \& E
复制代码 项目源码下载地址:
2 ?+ x3 R3 k% v0 F; y, W# _9 k' t& ]5 e6 d& m: K' g, A
; Q4 P$ e9 M [
$ a) ^& Y8 P/ Z: S. B8 D
2 Q3 i; g; }$ j; m* R) p' [ |
|