SpringBoot（九）-- SpringBoot JDBC

1.属性配置文件（application.properties）

    # type 可以修改连接池类型，默认采用Tomcat的连接池
    # spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
    spring.datasource.url=jdbc:mysql://localhost:3306/consult
    spring.datasource.username=root
    spring.datasource.password=123456
    spring.datasource.driver-class-name=org.gjt.mm.mysql.Driver

2.pom.xml 配置maven依赖

    <!-- MYSQL --> 
    <dependency> 
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency> 
    <!-- Spring Boot JDBC --> 
    <dependency> 
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-jdbc</artifactId>
    </dependency>

3.Java查询示例

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.core.RowMapper;
import org.springframework.stereotype.Service;
/**
* service层
*/
@Service
public class CommonServiceImpl implements CommonService {
    
    // 注入JdbcTemplate
    @Autowired
    private JdbcTemplate jdbcTemplate;
   
    public List<ConsultContent> queryContent(Map map) {
        String sql = "select * from consult_content a where a.state = 0 and a.type = 1 order by a.itemindex";
        return jdbcTemplate.query(sql, new RowMapper<ConsultContent>() {
            
            public ConsultContent mapRow(ResultSet rs, int rowNum)
                    throws SQLException {
                ConsultContent cc = new ConsultContent();
                cc.setContent(rs.getString("content"));
                cc.setId(rs.getInt("id"));
                cc.setItemIndex(rs.getInt("itemIndex"));
                cc.setState(rs.getInt("state"));
                cc.setType(rs.getString("type"));
                return cc;
            }
        });
    }       
}