当需要使用注解的时候
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<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd"> <context:annotation-config/> </beans>
当不需要注解的时候
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<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd"> </beans>
替换部分配置
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第一步:
更换注解头部
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第二步:
替换如下配置
1、给对应的类加上@Service、@Repository、将他们注入到spring容器
2、使用Autowired注入数据
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第三步:
配置自动扫描
<context:component-scan base-package="com.spring"></context:component-scan>
替换全部配置文件
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替换bean.xml
@Configuration public class BeanConfiguration { }
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替换扫描
@ComponentScan(basePackages = {"com.spring"})
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替换QueryRunner
@Bean public QueryRunner createQueryRunner(DataSource dataSource){ return new QueryRunner(dataSource); }
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替换数据源
@Bean(name = "dataSource") public DataSource createDataSource(){ ComboPooledDataSource ds; try{ ds = new ComboPooledDataSource(); ds.setDriverClass(""); ds.setJdbcUrl(""); ds.setUser(""); ds.setPassword(""); }catch (Exception e){ throw new RuntimeException(e); } return ds; }
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测试需要替换
ApplicationContext applicationContext = new AnnotationConfigApplicationContext(BeanConfiguration.class);
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也可以将@configuration拆分成多个,但是一定要能扫描到
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@configuration 分类可以不写,只需要一个主配置类,但是需要导入其他配置类@Import()
@Import(DataSourceConfiguration.class)
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注入propertier中的数据
需要在配置文件中加入PropertySource这个属性@Value("${driver}") private String driver; @Value("${url}") private String url; @Value("${name}") private String username; @Value("${password}") private String password;
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测试方法也改成配置类
导包 <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>5.0.2.RELEASE</version> </dependency> <!-- 需要更换成4.12版本以上 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency>
替换
git地址:https://gitee.com/Xiaokeworksveryhard/springXmlToAnnotations.git