一、依賴

<!--https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-validation --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-validation</artifactId> <version>2.3.3.RELEASE</version> </dependency>

二、實體類

@TableField('username') @NotBlank(message = '{user.name.notBlank}') private String username; @NotBlank(message = '{user.password.notBlank}') @TableField('password') private String password; @NotBlank(message = '{user.email.notBlank}') @Email(message = '{user.email.pattern}') @TableField('email') private String email;

三、配置

查看LocalValidationFactoryBean類的源碼，發(fā)現(xiàn)Spring Boot默認的ValidationMessagesSource校驗出錯時的提示文件是在resources文件夾下文件ValidationMessages.properties

ValidationMessages.properties

user.name.notBlank=用戶名不能為空user.password.notBlank=密碼不能為空user.email.notBlank=郵箱不能為空user.email.pattern=郵箱格式不正確

四、Controller

/** * 添加用戶 * * @param user 用戶對象 * @return */ @PostMapping('/insert') public ResultVO<Object> insert(@Validated @RequestBody User user, BindingResult bindingResult) { if (bindingResult.hasErrors()) { List<ObjectError> allErrors = bindingResult.getAllErrors(); return ResultVOUtil.fail(allErrors.stream().map(ObjectError::getDefaultMessage).collect(Collectors.toList())); } userService.insert(user.doBuild()); return ResultVOUtil.success(); }

五、效果

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