Spring中JdbcTemplate的配置和使用（注解）_spring 自己配置jdbctemplate

Spring中JdbcTemplate的配置和使用（注解）

1、引入依赖

gradle（这里是编译源码所引入的依赖，如果不是在编译源码的情况下， 就要对spring的包进行分别引入）：

compile(project(":spring-aop"))
compile(project(":spring-oxm"))
compile(project(":spring-jdbc"))
compile(project(":spring-aspects"))
compile(project(":spring-context"))
//mysql的链接器：
compile group: 'mysql', name: 'mysql-connector-java', version: '5.1.47'
//druid的数据源
compile group: 'com.alibaba', name: 'druid', version: '1.1.10'
//引入切面编程的jar
compile(project(":spring-instrument"))
compile group: 'junit', name: 'junit', version: '4.12'
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maven：

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aop</artifactId>
    <version>4.3.24.RELEASE</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>4.3.20.RELEASE</version>
</dependency>

<dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.8.13</version>
    <scope>compile</scope>
</dependency>

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>4.3.21.RELEASE</version>
</dependency>

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.46</version>
    <scope>runtime</scope>
</dependency>

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.8</version>
</dependency>
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使用注解进行配置：

@Configuration
@EnableAspectJAutoProxy
@EnableTransactionManagement
@ComponentScan(basePackages = {"com.panzh"})
//@PropertySource("classpath:jdbcTemplate.properties")我们可以采用这种方式来进行注入，这里为了方便起见，就不进行注入了。
public class MainConfig {

   //配置DataSource数据源
   @Bean
   public DataSource dataSource(){
      DruidDataSource dataSource = new DruidDataSource();
      //啥子数据源的名称和密码等等
      dataSource.setUsername("root");
      dataSource.setPassword("root");
      //设置连接的url
      dataSource.setUrl("jdbc:mysql://localhost:3306/mysql");
      //设置连接的驱动
      dataSource.setDriverClassName("com.mysql.jdbc.Driver");
      return dataSource;
   }

   @Bean
   public JdbcTemplate jdbcTemplate(DataSource dataSource){
      return new JdbcTemplate(dataSource);
   }
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直接在dao层进行调用即可：

@Repository
public class AccountInfoDao {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    public int updateAccountBlance(String accountId,double blance) {
        String sql = "update account_info set blance=blance-? where account_id=?";
        return jdbcTemplate.update(sql,blance,accountId);
    }

    public int saveAccountInfo(String accountId,double blance) {
        String sql = "insert into account_info(account_id,blance) values(?,?)";
        return jdbcTemplate.update(sql,accountId,blance);
    }

    public double qryBlanceByUserId(String accountId) {
        String sql = "select blance from account_info where account_id="+accountId;
        return jdbcTemplate.queryForObject(sql, Double.class);
    }
}
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具体使用方法见参考文档。