spirng4 spring data jpa配置记录

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前几天看spring实战(第四版)的spring-data-jpa部分 自己也动手实践了下 发现了一些问题

这边记录一下问题排除后的配置

 

首先是pom，这本书最不好的一点就是不告诉你要哪些依赖包。

我在动手实践的时候发现hibernate 5.2.1和spring4.2会出现flashMode方法找不到，查了下发现是hibernate在一个版本突然移除了这个方法，结果spring4.2以上跪了，我用的是spring4.3.2但是依赖的最新的spring-data-jpa依旧间接依赖4.2.6的spring-jdbc和spring-orm，在pom里直接依赖4.3.2的以上两个jar后问题排除。

pom(也包含web的 看这本书一路配过来的)：

 

    <properties>

        <!-- Generic properties -->
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <!-- Web -->
        <servlet.version>3.1.0</servlet.version>

        <!-- Spring -->
        <spring-framework.version>4.3.2.RELEASE</spring-framework.version>
        <spirng-data-jpa.version>1.10.2.RELEASE</spirng-data-jpa.version>

        <!-- Logging -->
        <logback.version>1.1.7</logback.version>
        <slf4j.version>1.7.21</slf4j.version>

        <!-- Test -->
        <junit.version>4.11</junit.version>

        <!-- Other -->
        <common-lang.version>3.4</common-lang.version>
        <mysql.version>5.1.39</mysql.version>
        <hibernate-jpa.version>1.0.1.Final</hibernate-jpa.version>
        <hibernate.version>5.2.1.Final</hibernate.version>
        <druid.version>1.0.24</druid.version>
        <jackson.version>2.8.1</jackson.version>
        <aspectj.version>1.8.9</aspectj.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring-framework.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>${spirng-data-jpa.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring-framework.version}</version>
        </dependency>
        <!-- Other Web dependencies -->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>${servlet.version}</version>
            <scope>provided</scope>
        </dependency>

        <!-- Spring and Transactions -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring-framework.version}</version>
        </dependency>

        <!-- Logging with SLF4J & LogBack -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <dependency>
            <groupId>ch.qos.logback</groupId>
            <artifactId>logback-classic</artifactId>
            <version>${logback.version}</version>
        </dependency>
        
        <!-- db related -->
        <dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.0-api</artifactId>
            <version>${hibernate-jpa.version}</version>
        </dependency>
        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>${hibernate.version}</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>${druid.version}</version>
        </dependency>

        <!-- third part tools -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>${common-lang.version}</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>${jackson.version}</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjrt</artifactId>
            <version>${aspectj.version}</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>${aspectj.version}</version>
        </dependency>

        <!-- Test Artifacts -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring-framework.version}</version>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>${junit.version}</version>
            <scope>test</scope>
        </dependency>
    </dependencies>

 

 

db的配置和书上也有少许不同:

 

@Configuration
//repository所在的package
@EnableJpaRepositories(basePackages = "com.xxx.db")
@EnableTransactionManagement
@Profile("dev")
public class DbDevConfig {

    @Bean(initMethod = "init", destroyMethod = "close")
    public DataSource dataSource() {
        final DruidDataSource source = new DruidDataSource();
        source.setUrl("jdbc:mysql://localhost:3306/xxx");
        source.setUsername("");
        source.setPassword("");
        source.setInitialSize(1);
        source.setMinIdle(1);
        source.setMaxActive(20);
        source.setDriverClassName("com.mysql.jdbc.Driver");
        return source;
    }

    @Bean
    public JpaVendorAdapter jpaVendorAdapter() {
        final HibernateJpaVendorAdapter adapter = new HibernateJpaVendorAdapter();
        adapter.setDatabase(Database.MYSQL);
        adapter.setShowSql(true);
        adapter.setGenerateDdl(false);
        adapter.setDatabasePlatform("org.hibernate.dialect.MySQL5Dialect");
        return adapter;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
        final LocalContainerEntityManagerFactoryBean emfb = new LocalContainerEntityManagerFactoryBean();
        emfb.setDataSource(dataSource());
        emfb.setJpaVendorAdapter(jpaVendorAdapter());
        //实体所在的package
        emfb.setPackagesToScan("com.xxx.domain");
        emfb.afterPropertiesSet();
        return emfb;
    }

    @Bean
    public JpaTransactionManager transactionManager() {
        return new JpaTransactionManager(entityManagerFactory().getObject());
    }
}

 书上没有配置emfb的packagesToScan，会导致运行时报persistence.xml找不到的错误，而根据书上说的用containerEntityManager的方式配置是不需要这个xml的。

 

 

在使用repository的时候如果用getOne会抛出no session的异常，而用findOne不会.估计又是惰性加载的问题。

 

估计用spring-boot会省力很多吧，不过排错什么的就更麻烦了。