AnnotationServlet 1 package com.servlet; 2 3 import java.io.IOException; 4 import java.io.PrintWriter; 5 import java.sql.Time; 6 import java.text.SimpleDateFormat; 7 import java.util.Date; 8 9 import javax.annotation.PostConstruct; 10 import javax.annotation.PreDestroy; 11 import javax.servle...
针对您遇到的 java.lang.NoClassDefFoundError: jakarta/annotation/PostConstruct 错误,这里是一些详细的步骤和建议,帮助您解决这个问题: 1. 确认 jakarta.annotation.PostConstruct 类是否存在于项目依赖中 首先,您需要确认您的项目中是否已经包含了包含 jakarta.annotation.PostConstruct 类的依赖。这个类是从Jakarta EE(之前...
import javax.annotation.PostConstruct; import javax.annotation.PreDestroy; import org.springframework.beans.factory.DisposableBean; import org.springframework.beans.factory.InitializingBean; import org.springframework.beans.factory.annotation.Autowired; import zd.dms.dao.ebuy.GroupDao; public class Person impl...
3 import java.io.IOException; 4 import java.io.PrintWriter; 5 import java.sql.Time; 6 import java.text.SimpleDateFormat; 7 import java.util.Date; 8 9 import javax.annotation.PostConstruct; 10 import javax.annotation.PreDestroy; 11 import javax.servlet.ServletException; 12 import javax.servlet....
import javax.annotation.PostConstruct; import org.springframework.stereotype.Service; @Service public class DatabaseService { private final DatabaseConnector connector; public DatabaseService(DatabaseConnector connector) { this.connector = connector; } @PostConstruct public void init() { // 初始化数据库...
javax.annotation.Resource @Documented @Retention (RUNTIME) @Target(METHOD) public @interface PostConstruct { } 翻译说明: PostConstruct注释用于在完成依赖注入以执行任何初始化之后需要执行的方法。必须在课程投入使用之前调用此方法。必须在支持依赖注入的所有类上支持此注释。即使类没有请求注入任何资源,也必须调用...
import javax.annotation.PostConstruct; import javax.annotation.PreDestroy; public class PersonService { private Person person; public PersonService() { System.out.println("PersonService no-arg constructor"); } @PostConstruct public void Initialize() { System.out.println("initializing the bean"); } ...
import static java.lang.annotation.RetentionPolicy.*; /** * The PostConstruct annotation is used on a method that needs to be executed * after dependency injection is done to perform any initialization. This * method MUST be invoked before the class is put into service. This ...
The PostConstruct annotation is used on a method that needs to be executed after dependency injection is done to perform any initialization. This method MUST be invoked before the class is put into service. This annotation MUST be supported on all classes that support dependency injection. The met...
annotation. The method on which the PostConstruct annotation is applied MUST fulfill all of the following criteria - - The method MUST NOT have any parameters except in the case of EJB interceptors in which case it takes an InvocationC ontext object as defined by the EJB specification. - The...