Spring JDBC中具名参数的用法

1. maven引入Spring jdbc

           <dependency><groupId>org.springframework</groupId><artifactId>spring-jdbc</artifactId><version>5.3.19</version></dependency>

2. 在Spring配置中配置

   <!-- dataSource配置 ->
   <bean id="dataSource"class="com.mchange.v2.c3p0.ComboPooledDataSource"destroy-method="close" p:driverClass="${jdbc.driverClassName}"p:jdbcUrl="${jdbc.url}" p:user="${jdbc.username}"p:password="${jdbc.password}" /><!-- 具名参数要用到的类 ->
   <bean id="namedParameterJdbcTemplate"class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate"><constructor-arg ref="dataSource"></constructor-arg></bean>

   
    
3. 使用

   package testSpring;import java.util.HashMap;
   import java.util.Map;import org.junit.Test;
   import org.springframework.context.ApplicationContext;
   import org.springframework.context.support.ClassPathXmlApplicationContext;
   import org.springframework.jdbc.core.BeanPropertyRowMapper;
   import org.springframework.jdbc.core.RowMapper;
   import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;import test.spring.model.User;public class TestSpring {@Testpublic void testUser() {ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");NamedParameterJdbcTemplate namedParameterJdbcTemplate=(NamedParameterJdbcTemplate) ac.getBean("namedParameterJdbcTemplate");String sql = "select * from User where id=:uid";Map<String,Object> paramMap= new HashMap<>();paramMap.put("uid", 1);RowMapper<User> rowMap = new BeanPropertyRowMapper<>(User.class);User user=(User) namedParameterJdbcTemplate.queryForObject(sql, paramMap, rowMap);System.out.println(user);}
   }