SpringMVC的Java配置替换spring-mvc.xml文件

Java类替换spring-mvc.xml。SpringConfig.java相当于spring-mvc.xml文件，@Bean注入bean作用在方法上，也可以在所要注入的类上直接加注释（@Service,@Repository,@Controller，@AutoWired等）

package com.csl.demo.annotation1;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.ComponentScan;import org.springframework.context.annotation.Configuration;@ComponentScan(basePackages= {"com.csl.demo.annotation"})//相当与<context:component-scan base-package=""/>@Configuration//替换spring-mvc.xml文件public class SpringConfig {        //注入bean        @Bean(name="personServices")        public PersonServices getPersonServices() {            PersonServices ps = new PersonServices();            //bean中的属性参照            ps.setPersonDao(getPersonDao());            return ps;        }        //注入bean        @Bean(name="personDao")        public PersonDao getPersonDao() {            return new PersonDao();        }}

Person实体类

package com.csl.demo.annotation1;import java.util.Date;public class Person {        private int id;        private String name;        private Date birthday;        //.......省略代码        }

StudentDao类

package com.csl.demo.annotation1;import java.util.ArrayList;import java.util.Date;import java.util.List;public class PersonDao {        @SuppressWarnings("deprecation")        List<Person> listPerson(){            List<Person> list = new ArrayList<Person>();            for (int i = 0; i < 6; i++) {                Person p = new Person(i, "Person"+i, new Date(117,i,10+i));                list.add(p);            }            return list;        }}

StudentServices类

package com.csl.demo.annotation1;import java.util.List;public class PersonServices  {    private PersonDao personDao;    public void setPersonDao(PersonDao personDao) {        this.personDao = personDao;    }    public List<Person> listPerson() {        return personDao.listPerson();    }}

测试类

package com.csl.demo.annotation1;import java.util.List;import org.springframework.context.annotation.AnnotationConfigApplicationContext;import com.csl.demo.datasources.SpringConfig2;import com.csl.demo.datasources.StudentServices;public class Tests {    public static void main(String[] args) {        //創建spring容器         @SuppressWarnings("resource")         AnnotationConfigApplicationContext aac = new         AnnotationConfigApplicationContext(SpringConfig.class);         PersonServices ps = (PersonServices) aac.getBean("personServices");         List<Person> list = ps.listPerson();         for (Person p : list) {         System.out.println(p);         }         aac.destroy();//銷毀}}

测试结果

Person [id=0, name=Person0, birthday=Tue Jan 10 00:00:00 CST 2017]Person [id=1, name=Person1, birthday=Sat Feb 11 00:00:00 CST 2017]Person [id=2, name=Person2, birthday=Sun Mar 12 00:00:00 CST 2017]Person [id=3, name=Person3, birthday=Thu Apr 13 00:00:00 CST 2017]Person [id=4, name=Person4, birthday=Sun May 14 00:00:00 CST 2017]Person [id=5, name=Person5, birthday=Thu Jun 15 00:00:00 CST 2017]