If it had rained(if+past perfect) you would have got wet .(perfect conditional) If you had worked harder (if +past perfect), you would have passed the exam .(perfect conditional ) 5. A further type of ‘if’ sentence exists ,where type 2 and type 3 are mixed. The tense in the ...
Form:if+Simple Past,Conditional I(= would + Infinitive) Example:If I found her address, I would send her an invitation. more on Conditional Sentences Type II► Conditional Sentence Type 3 → It isimpossiblethat the condition will be fulfilled because it refers to the past. ...
Form In a Type 3 conditional sentence, the tense in the 'if' clause is the past perfect, and the tense in the main clause is the perfect conditional or the perfect continuous conditional.
Unless means the same as if ...not,like if ,it is followed by a present tense ,a past tense or a past perfect (never by ‘would ‘)it is used instead of it + not in conditional sentences of all types : Type 1 unless + present : you will be sick unless you stop eating =if y...
Form In a Type 3 conditional sentence, the tense in the 'if' clause is the past perfect, and the tense in the main clause is the perfect conditional or the perfect continuous conditional.
spring.datasource.type=com.zaxxer.hikari.HikariDataSource 在使用时,一般设置matchIfMissing=false, 这样条件没有匹配上的话会Spring在扫描bean时会自动跳过该配置类。 也可以设定matchIfMissing=true,这种场景例如缓存,我们可以这样配置默认是开启缓存的。
get("value")) { if (context.getEnvironment().acceptsProfiles((String[]) value)) { return true; } } return false; } return true; } } 可以看到, 此类主要是 (1)通过 AnnotatedTypeMetadata 获取到了 @Profile 的所有属性。 (2)然后检查value属性值,该属性包含了bean的profile名称 (3)根据 通过 ...
publicbooleanmatches(ConditionContextcontext,AnnotatedTypeMetadatametadata) { Stringencoding=System.getProperty("file.encoding"); if(encoding!=null){ return"gbk".equals(encoding.toLowerCase()); } returnfalse; } } 1. 2. 3. 4. 5. 6.
AnnotatedTypeMetadata metadata);} 详解: 1、getClassOrMethodName方法 //matches中1的调用:得到类名或者方法名(条件注解可以作用的类或者方法上)privatestaticString getClassOrMethodName(AnnotatedTypeMetadata metadata) {//1. 如果metadata 是ClassMetadata的实例,则返回类名,否则返回全类名#方法名if(metadatainstanc...
@Conditional:Spring4.0 介绍了一个新的注解@Conditional,它的逻辑语义可以作为"If…then…else…"来对bean的注册起作用。 @Contidional 介绍 Conditional 是由 SpringFramework 提供的一个注解,位于 org.springframework.context.annotation 包内,定义如下。