Question

您好我正在尝试使用Spring aop @After annotation 更新数据库，但未调用使用@After注释的方法。

这是我的SignupController：

package com.jpizza.web;

import com.jpizza.model.Customer;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import static org.springframework.web.bind.annotation.RequestMethod.GET;
import static org.springframework.web.bind.annotation.RequestMethod.POST;


@Controller
@RequestMapping("/signup")
public class SignupController {

    @RequestMapping(method=GET)
    public String signup(){
        return "signup";
    }

    @RequestMapping(method=POST)
    public String formHandler(Customer customer){
        return "home";
    }
}

这是我的Aspect类：

    package com.jpizza.db;

import com.jpizza.model.Customer;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Component;

/**
 * Creed is a worker at jois pizza who registers users
 */
@Aspect
public class Creed implements CustomerDao{

    @Autowired
    private JdbcTemplate template;

    //This method is not being executed
    @After("execution(* com.jpizza.SignupController.formHandler(..)) && args(customer)")
    @Override
    public void saveCustomer(Customer customer) {
        System.out.println("About to update data");
        String sql = "INSERT INTO customer (username, email, password) VALUES (?,?,?)";
        template.update(sql, customer.getUsername(), customer.getEmail(),customer.getPassword());
    }

}

这是我的WebConfig.class：

    @Configuration
@EnableWebMvc
@ComponentScan("com.jpizza.web")
@PropertySource("classpath:database.properties")
@EnableAspectJAutoProxy
public class WebConfig extends WebMvcConfigurerAdapter{

    @Autowired
    private Environment env;

    @Bean
    public ViewResolver viewResolver(){
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/views/");
        resolver.setSuffix(".jsp");
        resolver.setExposeContextBeansAsAttributes(true);

        return resolver;
    }

    @Bean
    public DataSource dataSource(){
        DriverManagerDataSource dataSource = new DriverManagerDataSource(); 
        dataSource.setDriverClassName(env.getRequiredProperty("jdbc.driverClassName"));
        dataSource.setUrl(env.getRequiredProperty("jdbc.url"));
        dataSource.setUsername(env.getRequiredProperty("jdbc.username"));
        dataSource.setPassword(env.getRequiredProperty("jdbc.password"));
        return dataSource;
    }

    @Bean
    public JdbcTemplate jdbcTemplate(DataSource source){
        JdbcTemplate jt = new JdbcTemplate(source);
        jt.setResultsMapCaseInsensitive(true);
        return jt;
    }

}

没有记录错误。我在saveCustomer(Customer)执行后尝试执行formHandler(Customer)但它无效。该页面正在被重定向home.jsp有人可以告诉我我哪里出错吗？

修改

我按照建议改变了我的代码，但仍然没有执行@After

WebConfig.java：

@Configuration
@EnableWebMvc
@ComponentScan("com.jpizza.web")
@PropertySource("classpath:database.properties")
@EnableAspectJAutoProxy
public class WebConfig extends WebMvcConfigurerAdapter{

    @Autowired
    private Environment env;

    //added creed as a bean        
    @Bean
   public Creed creed(){
       return new Creed();
   }

    @Bean
    public ViewResolver viewResolver(){
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/views/");
        resolver.setSuffix(".jsp");
        resolver.setExposeContextBeansAsAttributes(true);

        return resolver;
    }

    @Bean
    public DataSource dataSource(){
        DriverManagerDataSource dataSource = new DriverManagerDataSource(); 
        dataSource.setDriverClassName(env.getRequiredProperty("jdbc.driverClassName"));
        dataSource.setUrl(env.getRequiredProperty("jdbc.url"));
        dataSource.setUsername(env.getRequiredProperty("jdbc.username"));
        dataSource.setPassword(env.getRequiredProperty("jdbc.password"));
        return dataSource;
    }

    @Bean
    public JdbcTemplate jdbcTemplate(DataSource source){
        JdbcTemplate jt = new JdbcTemplate(source);
        jt.setResultsMapCaseInsensitive(true);
        return jt;
    }

}

Creed.java：

    @Aspect
public class Creed implements CustomerDao{

    @Autowired
    private JdbcTemplate template;
    //changed the package name
    @After("execution(* com.jpizza.web.SignupController.formHandler(..)) && args(customer)")
    @Override
    public void saveCustomer(Customer customer) {
        System.out.println("About to update data");
        String sql = "INSERT INTO customer (username, email, password) VALUES (?,?,?)";
        template.update(sql, customer.getUsername(), customer.getEmail(),customer.getPassword());
    }




}

Answer 1

您的配置存在两个问题：

Spring对你的方面一无所知，你必须使用Spring的刻板印象注释（例如@Component）来注释它，或者通过WebConfig类中的@Bean注释来定义它
你的切入点定义中有一个拼写错误，正如第一条评论所指出的那样：）

Answer 2

SignUpController类没有实现接口。尝试在@EnableAspectJAutoProxy

中启用proxyTargetClass

@EnableAspectJAutoProxy(proxyTargetClass = true)

方法未被调用后的Spring aop

2 个答案: