springboot mybatis druid配置
2017-07-15 19:13
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刚从坑了爬出来 当作笔记记下来
先看下目录结构:
pom.xml
这地方注意版本号,之前用 mybatis-spring用了1.2.8 mybatis用了3.2.8
报了两个奇怪的错误
1、
配置文件application.properties
创建 MybatisConfig 类
这样就创建完了mybatis加druid
效果:
先看下目录结构:
pom.xml
<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.4.RELEASE</version> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <!-- MySQL数据库驱动 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <!-- druid阿里巴巴数据库连接池 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.26</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.0</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.1</version> </dependency> </dependencies>
这地方注意版本号,之前用 mybatis-spring用了1.2.8 mybatis用了3.2.8
报了两个奇怪的错误
1、
org.springframework.expression.spel.SpelEvaluationException: EL1008E: Property or field 'timestamp' cannot be found on object of type 'java.util.HashMap' - maybe not public?2、
ERROR info: 2017-05-05 14:57:03,230 ERROR [dispatcherServlet]:182 - Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos 0): Property or field 'timestamp' cannot be found on object of type 'java.util.HashMap' - maybe not public?] with root cause org.springframework.expression.spel.SpelEvaluationException: EL1008E:(pos 0): Property or field 'timestamp' cannot be found on object of type 'java.util.HashMap' - maybe not public?更换现在的POM的版本消失
配置文件application.properties
spring.datasource.driver-class-name=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=utf-8 spring.datasource.username=root spring.datasource.password=root # 初始化大小,最小,最大 spring.datasource.initialSize=5 spring.datasource.minIdle=5 spring.datasource.maxActive=20 # 配置获取连接等待超时的时间 spring.datasource.maxWait=60000 # 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 spring.datasource.timeBetweenEvictionRunsMillis=60000 # 配置一个连接在池中最小生存的时间,单位是毫秒 spring.datasource.minEvictableIdleTimeMillis=300000 spring.datasource.validationQuery=select 'x' spring.datasource.testWhileIdle=true spring.datasource.testOnBorrow=false spring.datasource.testOnReturn=false # 打开PSCache,并且指定每个连接上PSCache的大小 spring.datasource.poolPreparedStatements=true spring.datasource.maxPoolPreparedStatementPerConnectionSize=20
创建 MybatisConfig 类
package com.*.config; import org.apache.ibatis.session.SqlSessionFactory; import org.apache.log4j.Logger; import org.mybatis.spring.SqlSessionFactoryBean; import org.mybatis.spring.annotation.MapperScan; import org.springframework.beans.factory.annotation.Qualifier; import org.springframework.boot.autoconfigure.jdbc.DataSourceBuilder; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.ComponentScan; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Primary; import org.springframework.core.io.support.PathMatchingResourcePatternResolver; import org.springframework.jdbc.datasource.DataSourceTransactionManager; import org.springframework.transaction.annotation.EnableTransactionManagement; import javax.sql.DataSource; /** * Created by XS on 2017/7/15. */ @Configuration @EnableTransactionManagement @ComponentScan @MapperScan("com.hishamx.mapper") public class MybatisConfig { private static Logger logger = Logger.getLogger(MybatisConfig.class); private Class<? extends DataSource> dataSourceType=com.alibaba.druid.pool.DruidDataSource.class; @Bean(name="dataSource", destroyMethod = "close", initMethod="init") @ConfigurationProperties(prefix = "spring.datasource") public DataSource dataSource() { logger.info("-------------------- writeDataSource init ---------------------"); logger.info("dataSourceType:"+dataSourceType); return DataSourceBuilder.create().type(dataSourceType).build(); } @Bean public SqlSessionFactory sqlSessionFactory() throws Exception { SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean(); sqlSessionFactoryBean.setDataSource(dataSource()); sqlSessionFactoryBean.setTypeAliasesPackage("com.*.model"); PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath:mybatis/*.xml")); sqlSessionFactoryBean.getObject().getConfiguration().setMapUnderscoreToCamelCase(true); return sqlSessionFactoryBean.getObject(); } /** * 配置事务管理器 */ @Bean(name = "transactionManager") @Primary public DataSourceTransactionManager transactionManager(@Qualifier("dataSource") DataSource dataSource) throws Exception { return new DataSourceTransactionManager(dataSource); } }
这样就创建完了mybatis加druid
效果:
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