oracle+mybatis报错：BindingException("Invalid bound statement (not found): ")

从mysql转到oracle数据库：原来mysql保存数据的时候有的字段可以是Null值得，到了oracle里面，字段为null会报错。

于是乎使用了mybatis-plus插件。

在保存数据是email字段是可以为空的。

@TableField(value="EMAIL", el="email, jdbcType=VARCHAR")
 private String email;

结果导致报错：

BindingException("Invalid bound statement (not found): ")

需要在映射mapper的sql方法上增加@Flush注解

@Repository
public interface ISysDictMapper extends IBaseMapper<SysDictPO> {

    @Flush
    List<SysDictPO> queryAvailableDict();
}

可以增加配置项：https://blog.csdn.net/qq_21747795/article/details/81217264

解决方法：请将mybatis-plus改成mybatis,mybatis,mybtis,重要的说三遍，
必要的架包如下
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring- boot-starter</artifactId>
</dependency>

<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus</artifactId>
<version>2.1.9</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-autoconfigure</artifactId>
<version>1.3.2</version>
</dependency>

注意第一个是mybatis-spring-boot-start ,不是mybatisplus-spring-boot-start

还要在mybatis配置文件里声明MybatisSqlSessionFactoryBean，至此问题解决

@Configuration
public class MybatisPlusConfig {
    @Autowired
    private DataSource dataSource;

    @Autowired
    private MybatisProperties properties;

    @Autowired
    private ResourceLoader resourceLoader = new DefaultResourceLoader();

    @Autowired(required = false)
    private Interceptor[] interceptors;

    @Autowired(required = false)
    private DatabaseIdProvider databaseIdProvider;

    /**
     *   mybatis-plus分页插件
     */
    @Bean
    public PaginationInterceptor paginationInterceptor() {
        PaginationInterceptor page = new PaginationInterceptor();
        page.setDialectType("mysql");
        return page;
    }
    /**
     * 这里全部使用mybatis-autoconfigure 已经自动加载的资源。不手动指定
     * 配置文件和mybatis-boot的配置文件同步
     * @return
     */
    @Bean
    public MybatisSqlSessionFactoryBean mybatisSqlSessionFactoryBean() {
        MybatisSqlSessionFactoryBean mybatisPlus = new MybatisSqlSessionFactoryBean();
        mybatisPlus.setDataSource(dataSource);
        mybatisPlus.setVfs(SpringBootVFS.class);
        if (StringUtils.hasText(this.properties.getConfigLocation())) {
            mybatisPlus.setConfigLocation(this.resourceLoader.getResource(this.properties.getConfigLocation()));
        }
        mybatisPlus.setConfiguration(properties.getConfiguration());
        if (!ObjectUtils.isEmpty(this.interceptors)) {
            mybatisPlus.setPlugins(this.interceptors);
        }
        MybatisConfiguration mc = new MybatisConfiguration();
        mc.setDefaultScriptingLanguage(MybatisXMLLanguageDriver.class);
        mybatisPlus.setConfiguration(mc);
        if (this.databaseIdProvider != null) {
            mybatisPlus.setDatabaseIdProvider(this.databaseIdProvider);
        }
        if (StringUtils.hasLength(this.properties.getTypeAliasesPackage())) {
            mybatisPlus.setTypeAliasesPackage(this.properties.getTypeAliasesPackage());
        }
        if (StringUtils.hasLength(this.properties.getTypeHandlersPackage())) {
            mybatisPlus.setTypeHandlersPackage(this.properties.getTypeHandlersPackage());
        }
        if (!ObjectUtils.isEmpty(this.properties.resolveMapperLocations())) {
            mybatisPlus.setMapperLocations(this.properties.resolveMapperLocations());
        }
        return mybatisPlus;
    }
}