springboot2.1.0.RELEASE数据校验

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

 

package com.xc.leis.configuration;

import org.springframework.validation.BindException;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: xxx
 * @Date: 2021-07-03 10:39
 * @Description: xxx
 */
@ControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(BindException.class)
    @ResponseBody
    public Map validationErrorHandler(BindException ex) {
        //1.此处先获取BindingResult
        BindingResult bindingResult = ex.getBindingResult();
        //2.获取错误信息
        List<FieldError> fieldErrors = bindingResult.getFieldErrors();
        //3.组装异常信息
        Map<String,String> message = new HashMap<>();
        for (FieldError fieldError : fieldErrors) {
            message.put(fieldError.getField(),fieldError.getDefaultMessage());
        }
        return message;
    }
}
package com.xc.leis.pojo;

import javax.validation.constraints.Min;
import javax.validation.constraints.NotEmpty;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: xxx
 * @Date: 2021-07-03 10:05
 * @Description: xxx
 */
public class Msg {

    @Min(1)
    private int id;

    @NotEmpty(message = "姓名必须指定:name不能为空!")
    private String name;


    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Msg{" +
                "id=" + id +
                ", name='" + name + '\'' +
                '}';
    }
}
package com.xc.leis.service;

import com.xc.leis.pojo.Msg;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.validation.Valid;

/**
 * Created with IntelliJ IDEA.
 *
 * @Author: xxx
 * @Date: 2021-07-03 10:03
 * @Description: xxx
 */
@RestController
@RequestMapping("test")
public class IndexController {

    @RequestMapping("v1")
    public String v1(@Valid Msg msg){
        return msg.toString();
    }
}

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