Java-Class-@I：org.springframework.stereotype.Service.java

ylbtech-Java-Class-@I：org.springframework.stereotype.Service.java

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package com.ylbtech.edu.student.service;

import java.util.List;
import java.util.Map;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.ylbtech.edu.student.mapper.StudentMapper;
import com.ylbtech.edu.student.domain.Student;
import com.ylbtech.edu.student.service.IStudentService;/**
 * 学生 服务层实现
 * 
 * @author ylbtech
 * @date 2019-01-23
 */
@Service
public class StudentServiceImpl implements IStudentService 
{
    @Autowired
    private StudentMapper studentMapper;

    /**
     * 查询学生信息
     * 
     * @param studentID 学生ID
     * @return 学生信息
     */
    @Override
    public Student selectStudentById(String studentID)
    {
        return studentMapper.selectStudentById(studentID);
    }    

}

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/*
 * Copyright 2002-2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.stereotype;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

import org.springframework.core.annotation.AliasFor;

/**
 * Indicates that an annotated class is a "Service", originally defined by Domain-Driven
 * Design (Evans, 2003) as "an operation offered as an interface that stands alone in the
 * model, with no encapsulated state."
 *
 * <p>May also indicate that a class is a "Business Service Facade" (in the Core J2EE
 * patterns sense), or something similar. This annotation is a general-purpose stereotype
 * and individual teams may narrow their semantics and use as appropriate.
 *
 * <p>This annotation serves as a specialization of {@link Component @Component},
 * allowing for implementation classes to be autodetected through classpath scanning.
 *
 * @author Juergen Hoeller
 * @since 2.5
 * @see Component
 * @see Repository
 */
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
@Component
public @interface Service {

    /**
     * The value may indicate a suggestion for a logical component name,
     * to be turned into a Spring bean in case of an autodetected component.
     * @return the suggested component name, if any (or empty String otherwise)
     */
    @AliasFor(annotation = Component.class)
    String value() default "";

}

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作者：ylbtech 出处：http://ylbtech.cnblogs.com/ 本文版权归作者和博客园共有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。