MybatisPlus的FieldStrategy

更新策略

# 2.x配置
mybatis-plus:
  mapper-locations:
    - classpath*:mapper/**/*Mapper.xml
  typeAliasesPackage: com.test.assist.dao.domain
  global-config:
    id-type: 0
    field-strategy: 2
    db-column-underline: true
  configuration:
    map-underscore-to-camel-case: true
    cache-enabled: false

#3.x的配置
mybatis-plus:
  typeAliasesPackage: com.test.assist.dao.domain
  mapper-locations:
    - classpath*:mapper/**/*Mapper.xml
  global-config:
    db-config:
      select-strategy: not_empty
      insert-strategy: not_empty
      update-strategy: not_empty
      id-type: auto
  configuration:
    map-underscore-to-camel-case: true
    cache-enabled: false

NOT_EMPTY：会对字段值进行null和’’ 比较操作
NOT_NULL: 只会进行null检查
IGNORED, 都会更新
NOT_NULL,
NOT_EMPTY,
DEFAULT,
NEVER;
同时在3.x版本中，支持对select、update、insert设置不同的字段策略