seal

他不懂你的心 假裝冷靜
他不懂愛情 把它當遊戲
他不懂表明相愛這件事
除了對不起就只剩嘆息

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@EnableDiscoveryClient Microservice
@EnableFeignClients Open Feign search

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Swagger Annotations Comparison (Swagger2 vs Swagger3)

Class-Level Annotations

Purpose	Swagger2 (Legacy)	Swagger3 (Current)	Scope
API Grouping	@Api	@Tag	Class, Interface
Hide API	@ApiIgnore	@Hidden	Class, Method

Method-Level Annotations

Purpose	Swagger2 (Legacy)	Swagger3 (Current)	Scope
API Description	@ApiOperation	@Operation	Method
Response Codes	@ApiResponses/@ApiResponse	@ApiResponses/@ApiResponse	Method

Parameter-Level Annotations

Purpose	Swagger2 (Legacy)	Swagger3 (Current)	Scope
Parameter Description	@ApiParam	@Parameter	Method Parameter
Request Body Description	@ApiModelProperty	@Schema	Method Parameter, Field

Model Annotations

Purpose	Swagger2 (Legacy)	Swagger3 (Current)	Scope
Model Property	@ApiModelProperty	@Schema	Field
Model Description	@ApiModel	@Schema	Class

Security Annotations

Purpose	Swagger2 (Legacy)	Swagger3 (Current)	Scope
Security Scheme	No direct equivalent	@SecurityScheme	Configuration Class
API Security Requirement	No direct equivalent	@SecurityRequirement	Class, Method

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@CookieValue same as @Requestparam
//inner need to use `value = NotAuthenticated.COOKIE_NAME_FOR_TMOC.key

Mybatis-generator can easily create db search file

Use public @interface can help to define an annotation

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Lombok

@Getter/@Setter/@ToString use these annotations can easily create get Method and set Method;Also tostring

@Data can create all things above 

And use @NoArgsConstructor and @ AllArgsConstructor can create constructor classes

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Enum is a special class used to define a series of enumeration constants.

Public enum user {
    John(0),
    Marry(1),
    Jack(2);

    private final int userId;

    private user(int userId) {
        this,userId = userId;
    }

    //here can add a series of functions to expand business capabilities.
    
}

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In @interface realization, we can use default after functions, to set initial value

Public @interface test {

    String value() default “”;

}

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Feign

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AOP

I think it is a hook mechanism, while using AOP, you can simply insert an additional code without changing the source code.

To use AOP, the first step is to use the @Aspect annotation to treat the current class as an AOP aspect; then call annotations such as @Around, declare the injection point in the annotation, and hook it; after the hook is completed, you can use this code to return to the original process Object proceed = pjp.proceed();

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Label Classification Aggregation

AggregationBuilders.terms("label"): tells the system: "I want to do a 'classification statistics', counting things called label!"
.field("labels"): specifies the classification of the content in the labels field. For example, if your fault has labels such as "network", "hardware", and "software", it will count these labels.
.size(10): means only the 10 most common labels are counted.
queryBuilder.addAggregation(...): also add the "statistics" requirement to the "menu book".

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