springboot各种集成

fastjson

两个方法

@Configuration
public class WebMvcConfigurer extends WebMvcConfigurerAdapter {
    @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        // 定义一个convert转换消息对象
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
        // 添加fastjosn配置信息, 比如是否格式化返回的json数据
//        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        // convert中添加配置
//        fastConverter.setFastJsonConfig(fastJsonConfig);
        // 添加到convert中
        converters.add(fastConverter);
    }
}

方法2（这个可以避免null，加快速度

@Bean
public HttpMessageConverters fastJsonHttpMessageConverters() {
    FastJsonHttpMessageConverter oFastConverter = new FastJsonHttpMessageConverter();
    FastJsonConfig oFastJsonConfig = new FastJsonConfig();
    oFastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);
    oFastConverter.setFastJsonConfig(oFastJsonConfig);
    //处理中文乱码问题
    List<MediaType> oFastMediaTypeList = new ArrayList<>();
    oFastMediaTypeList.add(MediaType.APPLICATION_JSON_UTF8);
    oFastConverter.setSupportedMediaTypes(oFastMediaTypeList);

    HttpMessageConverter<?> oConverter = oFastConverter;
    return new HttpMessageConverters(oConverter);
}

　　pagehelper

<dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.4</version>
        </dependency>

druid

<dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.9</version>
  </dependency>

 mybatis（在实体类改了DO后缀的，记得在xml改

mybatis:
  typeAliasesPackage: com.biao.entity
  mapper-locations: classpath:mapper/*/*.xml
  configuration:
   #配置项：开启下划线到驼峰的自动转换. 作用：将数据库字段根据驼峰规则自动注入到对象属性。
   map-underscore-to-camel-case: true

   #打印SQL信息
logging:
  level:
   com:
    biao:
      dao: DEBUG

@MapperScan("com.biao.dao")

ps:由于在mybaits使用了@Mapper的注解代替原来的@repository,因此idea会监测到错误，因为idea只能检查java标准的注解和spring的，除非加了mybatis的插件（要收费),所以把Autowired的错误改了警告编译就能通过了