SpringBoot Web项目杂记

以你之姓@ 2022-05-11 17:52 216阅读 0赞

一、整合多数据源

1、pom文件引入依赖

<!-引入mybatis->
            <dependency>
    			<groupId>org.mybatis.spring.boot</groupId>
    			<artifactId>mybatis-spring-boot-starter</artifactId>
    			<version>1.3.2</version>
    		</dependency>
    
            <!-引入jpa->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-data-jpa</artifactId>
            </dependency>
    
            <!-引入mysql->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>
    
            <!-引入oracle->
            <dependency>
       			<groupId>com.oracle</groupId>
       			<artifactId>ojdbc6</artifactId>
       			 <version>11.2.0.3</version>
    		</dependency>

2、配置properties文件属性

spring.datasource.mysql.driver-class-name=com.mysql.jdbc.Driver
    spring.datasource.mysql.jdbc-url=XXX
    spring.datasource.mysql.username=XXX
    spring.datasource.mysql.password=XXX
     
    spring.datasource.oracle.driver-class-name=oracle.jdbc.driver.OracleDriver
    spring.datasource.oracle.jdbc-url=XXX
    spring.datasource.oracle.username=XXX
    spring.datasource.oracle.password=XXX

springboot2.0版本后，数据源的url属性名称为jdbc-url，2.0前为url

3、配置DataSource、SqlSessionFactory、TransactionManager、SqlSessionTemplate

@Configuration
    @MapperScan(basePackages = {"oracle数据源扫描dao包的路径"}, sqlSessionFactoryRef = "oracleSqlSessionFactory")
    public class OracleDataSourceConfig {
     
        //创建数据源bean对象
        @Bean(name = "oracleDataSource")
        @ConfigurationProperties(prefix = "spring.datasource.oracle")//指定使用配置属性的前缀
        @Primary
        public DataSource oracleDataSource() {
            return DataSourceBuilder.create().build();
        }
        //创建SqlSessionFactory的bean对象
        @Bean(name = "oracleSqlSessionFactory")
        @Primary
        public SqlSessionFactory oracleSqlSessionFactory(@Qualifier("oracleDataSource") DataSource dataSource) throws Exception {
            SqlSessionFactoryBean bean = new SqlSessionFactoryBean();
            bean.setDataSource(dataSource);
            //mapper文件扫描路径
            bean.setMapperLocations(new PathMatchingResourcePatternResolver().getResources("classpath*:mapper文件路径"));
            return bean.getObject();
        }
        //创建TransactionManager的bean对象
        @Bean(name = "oracleTransactionManager")
        @Primary
        public DataSourceTransactionManager oracleTransactionManager(@Qualifier("oracleDataSource") DataSource dataSource) {
            return new DataSourceTransactionManager(dataSource);
        }
      //创建SqlSessionTemplate的bean对象
        @Bean(name = "oracleSqlSessionTemplate")
        @Primary
        public SqlSessionTemplate oracleSqlSessionTemplate(@Qualifier("oracleSqlSessionFactory") SqlSessionFactory sqlSessionFactory) throws Exception {
            return new SqlSessionTemplate(sqlSessionFactory);
        }
    }

mysql数据源配置方法同上

二、拦截器的使用

在@SpringBootApplication类下，新建过滤方法

@Bean
        public FilterRegistrationBean ParameterFilterRegister() {
            FilterRegistrationBean registration = new FilterRegistrationBean();
            //注入过滤器
            registration.setFilter(new ParameterFilter());
            //拦截规则
            registration.addUrlPatterns("/*");
            //过滤器名称
            registration.setName("parameterFilter");
            //初始化参数
            Map<String,Object> initParameters = new HashMap<String,Object>();
            initParameters.put("xxx", "xxx");
            registration.setInitParameters(initParameters);
            //过滤器顺序，按从小到大执行
            registration.setOrder(1);
            return registration;
        }

三、获取ApplicationContext对象

编写一个实体类实现ApplicationContextAware接口

package com.bdvo.SmartPush.base.util;
    
    import org.springframework.beans.BeansException;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.ApplicationContextAware;
    import org.springframework.stereotype.Component;
    
    @Component
    public class ApplicationContextUtil
        implements ApplicationContextAware
    {
        /**
         * 上下文对象实例
         */
        private static ApplicationContext applicationContext;
    
        @Override
        public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
            this.applicationContext = applicationContext;
        }
    
        /**
         * 获取applicationContext
         * @return
         */
        public static ApplicationContext getApplicationContext() {
            return applicationContext;
        }
    
        /**
         * 通过name获取 Bean.
         * @param name
         * @return
         */
        public static Object getBean(String name){
            return getApplicationContext().getBean(name);
        }
    
        /**
         * 通过class获取Bean.
         * @param clazz
         * @param <T>
         * @return
         */
        public static <T> T getBean(Class<T> clazz){
            return getApplicationContext().getBean(clazz);
        }
    
        /**
         * 通过name,以及Clazz返回指定的Bean
         * @param name
         * @param clazz
         * @param <T>
         * @return
         */
        public static <T> T getBean(String name,Class<T> clazz){
            return getApplicationContext().getBean(name, clazz);
        }
    }

四、其他配置

1、添加项目访问前缀

server.servlet.context-path=/XXX

2、开启日志

logging.level.XXX=DEBUG //xxx即需打印日志的包 日志级别从低到高 TRACE < DEBUG < INFO < WARN < ERROR < FATA

springboot默认的日志是***logback，***若想使用其他日志框架（如log4j）需引入pom依赖

更多的配置参数可以通过新建配置文件来设置(当然也可以写在application.properties里)

Logback： logback-spring.xml, logback-spring.groovy, logback.xml, logback.groovy  
Log4j： log4j-spring.properties, log4j-spring.xml, log4j.properties, log4j.xml

3、分区配置文件

spring.profiles.active=dev 可以指定引用application-dev.properties，通过这个属性可以区分测试、生产配置文件