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asp.net连接mysql,用什么框架,就像Java使用mybatis那种,求大神指教
写个数据库连接工具类:
public MySqlDataReader GetData()
{ string connection = "server=localhost;user id=root;password=123456;database=ABC; pooling=true;";
MySqlConnection conn = new MySqlConnection(connection); string sqlQuery = "SELECT * FROM Article";
MySqlCommand comm = new MySqlCommand(sqlQuery, conn);
conn.Open();
MySqlDataReader dr = comm.ExecuteReader();
conn.Close(); return dr;
}
java怎么连接mysql数据库
这里介绍两种方式:
一,jdbc链接MySQL数据库:
1,如果你用jdbc方式,则按照下列方式进行连接:
A,注册驱动
B,链接数据库
C,执行sql
D,返回结果集
如下为一个基本完整流程:
package com.hu.demo;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
public class DBHelper {
public static final String url = "jdbc:mysql://127.0.0.1/student";
public static final String name = "com.mysql.jdbc.Driver";
public static final String user = "root";
public static final String password = "root";
public Connection conn = null;
public PreparedStatement pst = null;
public DBHelper(String sql) {
try {
Class.forName(name);//指定连接类型
conn = DriverManager.getConnection(url, user, password);//获取连接
pst = conn.prepareStatement(sql);//准备执行语句
} catch (Exception e) {
e.printStackTrace();
}
}
public void close() {
try {
this.conn.close();
this.pst.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
2,将注册,链接封装好,执行sql语句,返回结果集,代码如下:
package com.hu.demo;
import java.sql.ResultSet;
import java.sql.SQLException;
public class Demo {
static String sql = null;
static DBHelper db1 = null;
static ResultSet ret = null;
public static void main(String[] args) {
sql = "select *from stuinfo";//SQL语句
db1 = new DBHelper(sql);//创建DBHelper对象
try {
ret = db1.pst.executeQuery();//执行语句,得到结果集
while (ret.next()) {
String uid = ret.getString(1);
String ufname = ret.getString(2);
String ulname = ret.getString(3);
String udate = ret.getString(4);
System.out.println(uid + "\t" + ufname + "\t" + ulname + "\t" + udate );
}//显示数据
ret.close();
db1.close();//关闭连接
} catch (SQLException e) {
e.printStackTrace();
}
}
}
3,查询结果如下:
二,利用框架链接MySQL,这里是springMVC+Mybatis方式链接,主要是配置文件:
config.properties文件
validationQuery=SELECT 1
#jdbc_url=jdbc\:mysql\://110.80.10.198\:3306/irrigation?useUnicode\=truecharacterEncoding\=UTF-8zeroDateTimeBehavior\=convertToNull
#jdbc_username=root
#jdbc_password=2025900
jdbc_url=jdbc:mysql://localhost:3306/test?useUnicode=truecharacterEncoding=UTF-8zeroDateTimeBehaviorsss=convertToNull
jdbc_username=root
jdbc_password=123456
spring-mabatis.xml文件,进行相关配置
?xml version="1.0" encoding="UTF-8"?
beans xmlns=""
xmlns:xsi="" xmlns:tx=""
xmlns:aop=""
xsi:schemaLocation="
"
!-- 配置数据源 --
bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
init-method="init" destroy-method="close"
property name="url" value="${jdbc_url}" /
property name="username" value="${jdbc_username}" /
property name="password" value="${jdbc_password}" /
!-- 初始化连接大小 --
property name="initialSize" value="0" /
!-- 连接池最大使用连接数量 --
property name="maxActive" value="20" /
!-- 连接池最小空闲 --
property name="minIdle" value="0" /
!-- 获取连接最大等待时间 --
property name="maxWait" value="60000" /
!-- property name="poolPreparedStatements" value="true" / property
name="maxPoolPreparedStatementPerConnectionSize" value="33" / --
property name="validationQuery" value="${validationQuery}" /
property name="testOnBorrow" value="false" /
property name="testOnReturn" value="false" /
property name="testWhileIdle" value="true" /
!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 --
property name="timeBetweenEvictionRunsMillis" value="60000" /
!-- 配置一个连接在池中最小生存的时间,单位是毫秒 --
property name="minEvictableIdleTimeMillis" value="25200000" /
!-- 打开removeAbandoned功能 --
property name="removeAbandoned" value="true" /
!-- 1800秒,也就是30分钟 --
property name="removeAbandonedTimeout" value="1800" /
!-- 关闭abanded连接时输出错误日志 --
property name="logAbandoned" value="true" /
!-- 监控数据库 --
!-- property name="filters" value="stat" / --
property name="filters" value="mergeStat" /
/bean
!-- myBatis文件 --
bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"
property name="dataSource" ref="dataSource" /
!-- 自动扫描entity目录, 省掉Configuration.xml里的手工配置 --
property name="mapperLocations" value="classpath:com/fourfaith/*/mapping/*.xml" /
/bean
bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"
property name="basePackage" value="com.fourfaith.**.dao" /
property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" /
/bean
!-- 配置事务管理器 --
bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
property name="dataSource" ref="dataSource" /
/bean
!-- 拦截器方式配置事物 --
tx:advice id="transactionAdvice" transaction-manager="transactionManager"
tx:attributes
tx:method name="add*" propagation="REQUIRED" /
tx:method name="append*" propagation="REQUIRED" /
tx:method name="insert*" propagation="REQUIRED" /
tx:method name="save*" propagation="REQUIRED" /
tx:method name="update*" propagation="REQUIRED" /
tx:method name="modify*" propagation="REQUIRED" /
tx:method name="edit*" propagation="REQUIRED" /
tx:method name="delete*" propagation="REQUIRED" /
tx:method name="remove*" propagation="REQUIRED" /
tx:method name="repair" propagation="REQUIRED" /
tx:method name="delAndRepair" propagation="REQUIRED" /
tx:method name="import*" propagation="REQUIRED" read-only="false"
rollback-for="java.lang.Exception" /
tx:method name="get*" propagation="SUPPORTS" /
tx:method name="find*" propagation="SUPPORTS" /
tx:method name="load*" propagation="SUPPORTS" /
tx:method name="search*" propagation="SUPPORTS" /
tx:method name="datagrid*" propagation="SUPPORTS" /
tx:method name="*" propagation="SUPPORTS" /
/tx:attributes
/tx:advice
aop:config
aop:pointcut id="transactionPointcut"
expression="execution(* com...*.service..*Impl.*(..))" /
aop:advisor pointcut-ref="transactionPointcut"
advice-ref="transactionAdvice" /
/aop:config
!-- 配置druid监控spring jdbc --
bean id="druid-stat-interceptor"
class="com.alibaba.druid.support.spring.stat.DruidStatInterceptor"
/bean
bean id="druid-stat-pointcut" class="org.springframework.aop.support.JdkRegexpMethodPointcut"
scope="prototype"
property name="patterns"
list
valuecom...*.service.*/value
/list
/property
/bean
aop:config
aop:advisor advice-ref="druid-stat-interceptor"
pointcut-ref="druid-stat-pointcut" /
/aop:config
/beans
还有很多方式可以实现,这里就简略的描述一番。
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