springmvc @NotNull 注解
时间: 2023-12-16 16:02:32 浏览: 34
Spring MVC中的@NotNull注解是用于验证请求参数或方法参数是否为null的注解。在使用@NotNull注解时,需要先引入相关的依赖。根据引用和引用所提供的信息,可以使用以下依赖解决这个问题:
```xml
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.validator</groupId>
<artifactId>hibernate-validator</artifactId>
<version>6.0.7.Final</version>
</dependency>
```
在Spring MVC中使用@NotNull注解时,需要在参数上添加该注解以进行验证。例如:
```java
@RequestMapping("/example")
public void exampleMethod(@NotNull String parameter) {
// method implementation
}
```
这样,在请求参数"parameter"为null时,会抛出验证异常。通过使用@NotNull注解,可以有效地验证参数的有效性。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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