SpringBoot 参数校验

参数校验

1. 引入springvalidation依赖

<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-validation</artifactId>
</dependency>

2. 参数前添加@Pattern

   public Result registry(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$") String password) {
        }
   

3. 类上添加@Validated

   @Validated
   public class UserController {
        }
   

异常：jakarta.validation.ConstraintViolationException: registry.password: 需要匹配正则表达式"^\S{5,16}$", registry.username: 需要匹配正则表达式"^\S{5,16}$"

封装对象

对于封装的对象参数：

@PutMapping("/update")
public Result update(@RequestBody @Validated User user) {