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- package s2.jsp.zhangixao.dao;* q6 v! d( j8 V- C- I9 ^# \2 _
- 4 T: c9 X, {' u# b& n3 I
- import java.sql.Connection;
1 y6 m, B* x% d, }, @$ u6 l' q4 O! u - import java.sql.DriverManager;( ^4 r9 V# x+ \0 G2 U
- import java.sql.PreparedStatement;+ w1 S! u- _0 r2 X$ V4 M
- import java.sql.ResultSet;
6 K- k& N- w* L! ~% W# G/ Z9 @ - import java.sql.SQLException;
7 R3 U1 J2 s# C8 p: a$ S: W - /**) U* P6 i) O4 |8 Y
- * 访问数据库: V3 h& ] ~9 M7 c" Y
- * @author Administrator
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- */
8 u, z* h2 F% i- g3 G - public class MessageBase {( y7 w2 M: E/ |4 b
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
* X4 L! `/ ?# o6 c( |- y+ K1 |2 u2 u - private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";
3 r* T' }% @$ E" s+ p3 F8 v) e - private static final String DBNAME="sa";
, l2 b4 }! c( ? - private static final String DBPASS="";2 z' G! F6 i) H R1 S3 W5 c
- /**$ E- n! Y c& b
- * 连接数据库& w$ V. D9 t. F
- * @return: ^# m. z9 g3 B1 K3 Y3 D# e5 h3 W
- */& S4 D( p7 k; D+ y r
- public static Connection getConnection(){% m2 L4 X7 v3 a& A+ u! u7 G
- Connection con=null;9 r5 r3 i6 P* |$ f% L! e4 I0 H7 P
- try {
: ]( r& X- B- ^% N7 t/ g - Class.forName(DRIVER);# w- S+ }6 O6 C
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);0 \ |; ^( ^1 f8 U. ^8 B) g
- } catch (ClassNotFoundException e) {
) X+ H+ W! A% `- H1 b) ^ - System.out.println("加载驱动出现异常");
7 v2 q) O3 S6 r7 i4 K - e.printStackTrace();
+ N' r* f: R! I) F8 \9 I- T- x - } catch (SQLException e) {
0 b2 t k4 P! m' @) i" ? - System.out.println("数据库连接出现异常");
8 ~( T4 L, l5 S, O/ A - e.printStackTrace();
0 n$ ]& ~4 m3 w! O% y8 X3 v! H - }+ n( n! i9 M( ]1 s. j
- return con;0 {' h( a$ f1 T2 j. _& a
- }) X+ H/ J, I9 Q C. y
- /**( K1 @! F4 F5 P7 t
- * 关闭数据库
) o6 T2 D/ ]% C3 o8 K - * @param con
5 W1 ], X& Z4 t) d) O; q" ]" @ - * @param past4 r+ g- z0 L4 i7 Y9 t# X
- * @param rs
5 }" l F0 J% ~5 d - */
' d- ~' O! e* z - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){
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; R+ g* R9 A2 A" B - if (rs!=null) {, L: B8 c2 h; R- y4 @& ~1 w+ W
- try {
: a) `" d# S. u- Z0 M: v* r1 Y- y - rs.close();
; b/ B# r2 ^( t8 S6 {, L; @ - } catch (SQLException e) {$ h8 F+ S! u0 {0 ^
- System.out.println("rs 关闭出现异常");
9 v/ C6 J6 O, \& Z* {. k* W+ m0 j - e.printStackTrace();
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- }
/ N6 x6 a1 T2 F1 [; `3 d, Q - if (past!=null) {
: w3 \/ U# z! {) K& X* X; G - try {! h/ M8 H' m% {
- past.close();6 u) S2 |9 G6 }6 T
- } catch (SQLException e) {% V8 X8 P% E2 P$ T5 c* O; g
- System.out.println("past 关闭出现异常");9 l1 ~+ u* S, s7 y2 j9 C
- e.printStackTrace();
' Z1 Z. |. m8 ]1 y( @" ~! I - }8 K3 z8 C- k9 B8 `
- }
0 q% l* o( }8 [6 i8 Y; h8 _" p - if (con!=null) {
. K: \, ?5 w+ o1 Q' }: a* K* y - try {9 T2 A1 f0 g/ f. X2 f+ [
- con.close();
: d% v1 |, S& h: n$ [) i - } catch (SQLException e) {
0 a3 Z. ?( V# } - System.out.println("con 关闭出现异常");
1 o4 T }0 w% D6 G - e.printStackTrace();+ V. @: T; [5 n0 i1 J
- }1 b* T4 A5 r4 P: c5 p* N9 H' a+ G
- }7 D. D- n e3 o5 I; L. X4 k
- }8 O5 q, {3 k1 {9 a! J/ P' B
- /**" s0 u+ l: @/ J6 |1 T ?
- * 执行数据的增删改操作' Q: m3 c- O7 R0 @* d+ {) s7 x6 b
- * @param sql
u' z' F( O/ T6 ]) o8 o - * @param getValues" z' u0 @' W0 Y' m# h2 u8 d4 d; b& G
- * @return0 I- I# R& U& `. a# C
- */
: a7 I+ f2 v. Z: g9 c5 G$ U - public static int executeUpdate(String sql,String[]getValues){
0 g( @. O! H. Y, v - int t=0;& n# f1 @+ y6 j" a" p' b& @
- PreparedStatement past=null;1 [% Y3 r: H7 z6 t: V& L9 c
- Connection con=null;
% E: e- {1 J6 p& @$ A+ ]3 U8 ?8 F2 j2 ] - try {1 ?9 Y/ R* e, B |8 a
- con=getConnection();# t& Q% ]% w2 I/ h2 R$ d
- past=con.prepareStatement(sql);
, @$ k7 l+ D7 a3 J+ Q - if (getValues!=null) {
+ o$ l9 E) G5 o* F - for (int i = 0; i < getValues.length; i++) {% P8 }6 k& b' A2 M& _
- past.setString(i+1,getValues[i]);
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- }
" `( h# ~+ A5 ~ - t=past.executeUpdate();
% @) Q8 S7 g9 _( v - } catch (SQLException e) {2 m& _, z" j8 u" f* E
- System.out.println("执行数据库操作出现异常");
: ~: @6 c5 X- A. f4 J& k - e.printStackTrace();
) }- Z1 o9 j5 x6 j& }- h -
; @! S$ y) T6 m+ U( r - }finally{/ n# s9 u3 Q/ L; @- X! u* X
- MessageBase.CloseAll(con, past, null);
5 j. l3 S+ ]; C7 c: E+ Q3 i; f - }
/ _' i; }3 u4 G. o; m3 D - return t;
9 w. Q O1 i- o% W - }' {. B- _; @ H
- /**+ k, h/ j% g4 L, x& r
- * 测试连接
3 M, ?* Q% ^2 D3 H - * @param args
: }. G3 V7 W. i+ L" R) m1 A% Z - */
^$ V" s( ]$ ?, f - public static void main(String[] args) {: Y' F4 P" E1 j+ h5 \
- Connection conn=getConnection();0 {7 f' m9 Y! D2 c
- if(conn!=null){! m: t2 h& W, p m! U# n8 k
- System.out.println("连接成功");
" g e! K" y% h F! P/ | - }else{
. B/ i/ x: M5 Q+ ?7 J - System.out.println("连接失败");2 _" ?+ W* v! C: k* M* c2 k7 B: j
- }
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- }" n7 z; H/ e0 T+ s; {* t
复制代码- package s2.jsp.zhangixao.dao;
# J" ~* _8 n2 Q) Y6 C7 l3 A - : }3 r; s% c! c% `
- import java.util.List;4 H! l* j( Y( ~' s
. a- q, B. [) G/ j4 O: @( @' F- import s2.jsp.zhangxiao.entity.Message;
* U p! ^* m7 u3 W+ f
" G6 F# @# ?9 O5 `- /**
. M+ B" B1 j/ T/ B- L: y# H - * 留言板接口
( }+ ]8 C5 j5 g ^5 M% u2 k; K - * @author Administrator5 M% H$ x- N) `+ E) j
- *
$ W5 a/ p/ i* n6 }3 u - */- |- D g; X! p, w' e$ Y
- public interface MessageDao {
2 B p% c" s0 v0 I2 | - //添加留言
8 Q$ A. G$ Q z Z - public int addMessage(Message message);# E5 |7 J, q/ ~1 x
- //查询全部留言
" `& a6 R6 ?; z4 o' Q2 w3 i: R7 t - public List selcetMessage();
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复制代码 项目源码下载地址:
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