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- package s2.jsp.zhangixao.dao;
% ^9 o3 _& Q' s5 j# c8 z
: Z$ X' k$ e" y- import java.sql.Connection;
" r/ ^3 N, Z6 f# ] - import java.sql.DriverManager;& u, O! F0 o+ V1 B* a
- import java.sql.PreparedStatement;
& E8 `3 n$ C, J9 e. w - import java.sql.ResultSet;
% E2 U- m h1 Y) J; x - import java.sql.SQLException;% L9 K4 _: d- Z: \" k" V! _
- /**
& n8 e* q- y1 F! \8 ]! z - * 访问数据库
3 |1 |9 F" t# W, _& ` - * @author Administrator
- L8 R* \% r. X/ |0 Z" _; f8 p - *
- l" Q6 d& |9 @2 W. t" C - */' f# g* r6 h; D+ x
- public class MessageBase {, f+ J' i! K, N' @7 y2 m, @
- private static final String DRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";
$ Y: K: N' J& M; M' h. `& B8 L - private static final String URL="jdbc:sqlserver://localhost:1433;DataBaseName=messageboard";5 j) t) a# ]9 m; W
- private static final String DBNAME="sa";
5 ?4 |) w% b# M# E4 p - private static final String DBPASS="";
6 z2 V2 ] s( X- \$ R6 D# o - /**9 v0 E: i( F# |! b
- * 连接数据库1 z3 s! B. `6 @; p) d$ m
- * @return
6 K P5 a6 L; z P2 x& @+ m - */7 u3 A' }' o" Z* j6 J
- public static Connection getConnection(){
) X" H. M& i8 B, L! X3 X/ p; N4 q5 e$ [ - Connection con=null;
) S! j2 s- Y# n$ L; M - try {
* X! R9 K' c$ g1 b - Class.forName(DRIVER);: ~4 s* u0 c V8 P/ u; ^# P
- con=DriverManager.getConnection(URL,DBNAME,DBPASS);
0 E7 }/ X0 s* ~8 m3 z( l - } catch (ClassNotFoundException e) {
( S3 m) X: X/ g5 M6 Q7 s - System.out.println("加载驱动出现异常");# k" V; V9 ]. e4 t
- e.printStackTrace();+ e% z: L! R# E+ ^2 O" Q) @
- } catch (SQLException e) {+ Q# F" d; x/ C+ e; p/ |+ L' O! q
- System.out.println("数据库连接出现异常");
# l0 J' m0 D6 q% O - e.printStackTrace();. ^2 c4 M& y- G) \% V9 M. V, K7 h; D
- }7 o5 J9 ~+ @7 `/ u! M% {* _2 q* Y
- return con;
l- V* u2 i, O - }
6 W, M8 x V6 R2 C2 U5 x. { - /**, K {8 J! I3 L! b
- * 关闭数据库. J6 ^& I0 z \6 q. j* J
- * @param con2 W% y6 b/ ~# A6 O) u; R4 x4 e# b
- * @param past
& W- {, H! u1 \* l' j6 y - * @param rs
# W2 [9 j( i" D* i: } - */
( a" q9 S F4 X - public static void CloseAll(Connection con,PreparedStatement past,ResultSet rs){0 d* S" x4 c g1 v6 b
- # T' \# C! k7 s1 q8 ]# W/ }
- if (rs!=null) {0 v! h- Z+ @$ ~1 x1 t. w6 p' Y
- try {9 S g: m: A$ Q# P, ~1 ^
- rs.close();
4 n" n9 y) t9 Z- @% U2 p - } catch (SQLException e) {
, z0 J; i2 H$ @0 N, Z" J - System.out.println("rs 关闭出现异常");
; M# A) S, J% {' U& Z* Z. K - e.printStackTrace();
A; d% \( ?$ f5 J - }
8 F, T% ^1 z& z - }, o8 T! Y" v' L+ N0 \
- if (past!=null) {- L1 n; c# e- ]: t2 I7 b
- try {
, w7 c. N: P) u; A0 ^! u - past.close();! [2 f' a/ f% p8 t3 \! U7 X
- } catch (SQLException e) {
# P: B# U9 c# R9 r/ i' D - System.out.println("past 关闭出现异常");
0 ]( Q0 k; r5 z h" @' o% r% i4 Z - e.printStackTrace();
( c1 h$ K6 v- B+ E' ?5 ? - }( p# o3 s" v# }! L
- }1 k2 q; _) a f. e9 {7 W
- if (con!=null) {
" C2 ?' K3 `5 n - try {
/ L- q/ X7 N+ I/ M, J+ i3 `' m - con.close();. \% n. X3 }* q/ J
- } catch (SQLException e) {- F; |- V, i: J8 Q
- System.out.println("con 关闭出现异常");' g+ X1 a& d/ C O* }$ l6 q7 Y
- e.printStackTrace();
C2 ~! z7 w) j9 e - }) }2 l5 U: K: _" n. t
- }! t e. p9 T9 ?1 a! M9 N
- }
2 Y+ E) E, i' G. j1 P+ V - /**/ F' y6 I! C* e
- * 执行数据的增删改操作0 O) u) U+ N3 e7 T* e9 N
- * @param sql3 w6 n# C9 E! ]& K! t3 P
- * @param getValues. M' z% b! i D/ j% B5 m8 v+ \
- * @return s% i+ m1 I, p2 O: V' d& h
- */
: S1 v" t& q- q, K' N5 l7 `' O* V4 t - public static int executeUpdate(String sql,String[]getValues){0 \( d" i9 p! v/ ]: L5 W
- int t=0;
" n, |/ @: E( d. f3 H* w- X& }1 N) E* K - PreparedStatement past=null;
4 F6 m4 E, [- d! [; I8 y - Connection con=null;1 p; T$ ^& a+ I* e- k
- try {
1 q" R8 i% y, o1 [" F - con=getConnection();) G: m; E/ ?+ B! t
- past=con.prepareStatement(sql);6 F" j l U; F; x2 E V
- if (getValues!=null) {' B* D6 H9 ?0 f/ f9 f6 n( L, H! D. C! M
- for (int i = 0; i < getValues.length; i++) {
" Y4 S4 A" J( z7 S9 C4 z - past.setString(i+1,getValues[i]);* k8 T/ ] i4 y) Y; F
- }& T$ [( D& h, [2 f' m) R
- }
/ n( Y, j" J. C; L; S6 n2 u; d - t=past.executeUpdate();$ I6 O! `$ c* H
- } catch (SQLException e) {
, d% h% o- b) b: Y% i( d5 K - System.out.println("执行数据库操作出现异常");
4 q1 J: o. @7 p* H - e.printStackTrace();
( e- ~- V% V, ]4 ]" B. j - 8 g, D$ A; U7 U/ r' I
- }finally{
$ f. Z# W$ X; f) N - MessageBase.CloseAll(con, past, null);
+ e* N& M3 Q2 q3 t8 U) K - }
* i# N/ m8 R3 |5 R$ Q - return t;% y) J% S2 k1 P& k: L
- }
8 E* l' p0 l- b+ \+ m4 o% V7 s - /** m' k i2 e3 B* m
- * 测试连接
( F; V$ h" x K8 L+ y - * @param args
9 A% i9 j" a6 M - */
3 `8 n& q9 l( j D6 \# b8 { - public static void main(String[] args) {: ?5 M# u3 p8 S0 Z/ B
- Connection conn=getConnection();* ^1 R( }8 ^& C: d
- if(conn!=null){
4 O) t# @4 p2 J! a+ q9 ?7 w0 a - System.out.println("连接成功");
: j* K+ F4 H l+ q C - }else{
' S5 _- G* f! `3 P" z, N; I - System.out.println("连接失败");) \$ }& U! p" e+ R# f
- }
/ q' [/ l3 g9 h8 X - }. E; R! V; Z- R, g7 m$ b
- }
& c! t2 z @) _% S
复制代码- package s2.jsp.zhangixao.dao;
8 P4 q! }6 |8 c* P! c' k" j, V - - t7 Y1 `2 V1 u$ w( h
- import java.util.List;4 {" W0 q7 l2 x9 v
( `; y8 \' e B1 P- import s2.jsp.zhangxiao.entity.Message;
' p: r7 ?% z6 o6 x( Y
, ` z: d3 |9 S- /*** N; P5 }) V$ o# I6 W2 L
- * 留言板接口# V: t6 f6 i5 O% e3 Q0 a
- * @author Administrator! u3 \+ S- e- F7 \% J8 m) E4 D# \, X
- *
! O+ E' U% G; ]' ~& _ - */
3 |) ?9 @/ D" Y* P - public interface MessageDao {
0 t z/ f }' q9 d2 W( T - //添加留言 j% J2 q+ i6 J0 e! s. t
- public int addMessage(Message message);: b2 E( m, H6 @" C3 Y! G
- //查询全部留言
; ?/ A9 O [0 O4 p- ^1 p - public List selcetMessage();
* R- m1 h" O& u$ d. ]0 e: I - }
' j( Z6 o( s% T2 O: h3 L Y8 w
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