使用validation校验

使用validation校验

加入依赖：

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

controller:

import com.example.dx0.pojo.Persion;
import org.hibernate.validator.constraints.Range;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import javax.validation.Valid;
import javax.validation.constraints.NotBlank;@Validated
@RestController
public class ValidatedTest {@RequestMapping(value = "/t1")public String test1(){return "just test!";}// 方式一：在Controller中使用校验注解（注意：这种方式要在controller上加@Validated）@RequestMapping(value = "/v1")public String test3(@NotBlank(message = "name不能为空") String name, @Range(min = 0,max = 1) int sex){return  "带校验的：hello, "+name+"  you are a"+sex;}// 方式二：在实体类中使用校验注解（注意：这种方式要在形参前加@Valid）@RequestMapping(value = "/v2")public String test3(@RequestBody @Valid Persion persion){return  "带校验的：hello,"+persion.toString();}
}

实体类：

import org.hibernate.validator.constraints.Length;
import org.hibernate.validator.constraints.Range;import javax.validation.constraints.Min;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.NotNull;public class Persion {@NotBlank(message = "用户名不能为空")@Length(max = 3, message = "用户名最长为10位")private String name;@Min(0)private int age;private int sex;public Persion() {}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}