本篇文章给大家分享的是有关springboot 中怎么校验参数格式，小编觉得挺实用的，因此分享给大家学习，希望大家阅读完这篇文章后可以有所收获，话不多说，跟着小编一起来看看吧。
springboot 参数格式校验
@Validated
字面意思校验
@RequestBody
该注解不用多说，意思是接收为json格式的参数
@Validated
字面意思校验， 需要配合@NotBlank 或者 @NotNull 注解才能生效
进入到请求体参数中。
springboot 参数注解校验
1.添加依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-validation</artifactId> </dependency>package com.xl.annotation;import lombok.Data;import org.hibernate.validator.constraints.Length;import org.hibernate.validator.constraints.Range;import javax.validation.constraints.*;import java.math.BigDecimal;import java.util.Date;@Datapublic class User { @NotNull(message = "ID不能为空") @Range(min = 1, max = 100, message = "ID必须在1到100之间") private Integer id; @NotNull(message = "姓名不能为空") @Length(min = 2, max = 6, message = "姓名必须在2到6位之间") private String name; @NotNull(message = "余额不能为空") @DecimalMax(value = "30.50", message = "余额不能超过30.5") @DecimalMin(value = "1.50", message = "余额不能低于1.5") private BigDecimal amount; @NotNull(message = "生日不能为空") @Past(message = "生日必须是过去") private Date birthday; @NotBlank(message = "邮箱不能为空") @Email(message = "邮箱格式不正确") private String email; @NotBlank(message = "手机号不能为空") @Pattern(regexp = "^(((13[0-9])|(14[579])|(15([0-3]|[5-9]))|(16[6])|(17[0135678])|(18[0-9])|(19[89]))\\d{8})$", message = "手机号格式错误") private String phone;}2.controller层
package com.xl.annotation;import io.swagger.annotations.Api;import io.swagger.annotations.ApiOperation;import io.swagger.annotations.ApiParam;import org.springframework.validation.BindingResult;import org.springframework.validation.ObjectError;import org.springframework.validation.annotation.Validated;import org.springframework.web.bind.annotation.*;import javax.validation.ValidationException;import javax.validation.constraints.Max;import javax.validation.constraints.NotNull;@RestController@Validated@Api(value = "手机验证",description = "手机验证")public class MobileController {@ApiOperation("手机验证")@RequestMapping("/phone") public String mobilePattern( Phone phone){ return "chengg"; } @PostMapping("/getUser") @ApiOperation("手机验证12") public String getUserStr( @NotNull(message = "name 不能为空")@RequestParam String name, @Max(value = 99, message = "不能大于99岁")@RequestParam Integer age) { return "name: " + name + " ,age:" + age; } private void validData(BindingResult bindingResult) { if (bindingResult.hasErrors()) { StringBuffer sb = new StringBuffer(); for (ObjectError error : bindingResult.getAllErrors()) { sb.append(error.getDefaultMessage()); } throw new ValidationException(sb.toString()); } } @PostMapping("/test") @ApiOperation(value = "测试", notes = "") public String test(@ApiParam(name = "test", value = "参数", required = true) @Validated @RequestBody User test, BindingResult bindingResult) { validData(bindingResult); if(bindingResult.hasErrors()){ String errorMsg = bindingResult.getFieldError().getDefaultMessage(); return errorMsg; } return "参数验证通过"; }}3.自定义一个抛出异常类
package com.xl.annotation;import org.springframework.http.HttpStatus;import org.springframework.web.bind.annotation.ExceptionHandler;import org.springframework.web.bind.annotation.ResponseStatus;import org.springframework.web.bind.annotation.RestControllerAdvice;import javax.validation.ConstraintViolation;import javax.validation.ConstraintViolationException;import javax.validation.ValidationException;import java.util.Set;@RestControllerAdvicepublic class GlobalExceptionHandler { @ExceptionHandler(ValidationException.class) @ResponseStatus(HttpStatus.BAD_REQUEST) public String handle(ValidationException exception) { if(exception instanceof ConstraintViolationException){ ConstraintViolationException exs = (ConstraintViolationException) exception; Set<ConstraintViolation<?>> violations = exs.getConstraintViolations(); for (ConstraintViolation<?> item : violations) { //打印验证不通过的信息 System.out.println(item.getMessage()); } } return exception.getMessage(); }}4.加一个当检测第一个参数不合法时立即返回错误不会继续进行校验
package com.xl.annotation;import org.hibernate.validator.HibernateValidator;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import javax.validation.Validation;import javax.validation.Validator;import javax.validation.ValidatorFactory;@Configurationpublic class ValidatorConf { @Bean public Validator validator() { ValidatorFactory validatorFactory = Validation.byProvider( HibernateValidator.class ) .configure() .failFast( true ) .buildValidatorFactory(); Validator validator = validatorFactory.getValidator(); return validator; }}以上就是springboot 中怎么校验参数格式，小编相信有部分知识点可能是我们日常工作会见到或用到的。希望你能通过这篇文章学到更多知识。更多详情敬请关注编程网行业资讯频道。
