常用類屬於哪些jar包

1.@requestmapping注解，屬於org.springframework.web.bind.annotation包下。org.springframework.web jar包。

2.@RestController注解，也屬於org.springframework.web.bind.annotation包下，org.springframework.web jar包。

都是spring mvc，也就是spring web jar包下

3.@ComponentScan(basePackages = "com.pingan.property.icore.pap.*")注解，包掃面注解，屬於spring下的jar包，context上下文中嘛,負責spring的ioc注入。

--->org.springframework.context.annotation;org.springframework.context jar包

4.@SpringBootApplication 屬於org.springframework.boot.autoconfigure包下。org.springframework.boot jar包下。

5.@MapperScan(basePackages = "com.pingan.property.icore.pap.**.dao")注解，mapper當然屬於mybatis了，所以屬於mybatis的jar包下。

屬於org.mybatis.spring.annotation;org.mybatis.spring jar包下。mybatis對接spring的jar包叫做org.mybatis.spring jar包

 

@SpringBootApplication
@ComponentScan(basePackages = "com.pingan.property.icore.pap.*")
@MapperScan(basePackages = "com.pingan.property.icore.pap.**.dao")
public class DemoApplication implements EnvironmentAware {

    private RelaxedPropertyResolver propertyResolver;

    @Override
    public void setEnvironment(Environment env) {
        this.propertyResolver = new RelaxedPropertyResolver(env, "spring.datasource.");
    }

    @Bean(destroyMethod = "close", initMethod = "init")
    public DataSource dataSource() {

        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setUrl(propertyResolver.getProperty("url"));
        dataSource.setDriverClassName(propertyResolver.getProperty("driverClassName"));
        dataSource.setDefaultAutoCommit(Boolean.parseBoolean(propertyResolver.getProperty("defaultAutoCommit")));
        return dataSource;
    }


    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
}

 

6.@Bean注解，屬於org.springframework.context.annotation下，都是用來項目啟動時向ioc容器中注入bean的注解。

@Bean(destroyMethod = "close", initMethod = "init")
    public DataSource dataSource() {

        DruidDataSource dataSource = new DruidDataSource();
        dataSource.setUrl(propertyResolver.getProperty("url"));
        dataSource.setDriverClassName(propertyResolver.getProperty("driverClassName"));
        dataSource.setDefaultAutoCommit(Boolean.parseBoolean(propertyResolver.getProperty("defaultAutoCommit")));
        return dataSource;
    }

 

7.@@Configuration org.springframework.context.annotation;

6.EnvironmentAware 接口，屬於org.springframework.context包下

 

7.RelaxedPropertyResolver類，屬於org.springframework.boot.bind包下。

public class RelaxedPropertyResolver implements PropertyResolver，實現了PropertyResolver接口