Springboot hibernate-validator 6.x快速校验示例代码

一、版本信息及maven依赖

hibernate-validator 7.x版本有问题，暂时以6.2.1.final为例，6.2.1.final版本解决了log4j版本的漏洞

<properties>
        <!-- jdk版本 -->
        <java.version>1.8</java.version>
        <!-- 构建时编码 -->    
        <project.build.sourceencoding>utf-8</project.build.sourceencoding>
        <!-- 输出时编码 -->
        <project.reporting.outputencoding>utf-8</project.reporting.outputencoding>
        <hutool.version>5.7.16</hutool.version>
        
        <hibernate-validator.version>6.2.1.final</hibernate-validator.version>
    </properties>

记得引入：spring-boot-starter-validation

<dependency>
            <groupid>org.springframework.boot</groupid>
            <artifactid>spring-boot-starter-validation</artifactid>
        </dependency>
        
        <dependency>
            <groupid>org.hibernate.validator</groupid>
            <artifactid>hibernate-validator</artifactid>
        </dependency>
        
        <dependency>
            <groupid>cn.hutool</groupid>
            <artifactid>hutool-all</artifactid>
            <version>${hutool.version}</version>
        </dependency>

二、定义实体bean

import javax.validation.constraints.email;
import javax.validation.constraints.max;
import javax.validation.constraints.min;
import javax.validation.constraints.notblank;
 
import org.hibernate.validator.constraints.length;
 
public class user {
 
    private integer id;
    @min(18)
    @max(200)
    private integer age;
    
    @notblank(message = "姓名不能为空")
    @length(min = 2, max = 6, message = "长度必须在{min}和{max}个字符之间")
    private string name;
    
    @notblank(message = "电子邮箱不能为空")
    @email(message = "电子邮箱格式不正确")
    private string email;
    
    
    public integer getid() {
        return id;
    }
    public void setid(integer id) {
        this.id = id;
    }
    public integer getage() {
        return age;
    }
    public void setage(integer age) {
        this.age = age;
    }
    public string getname() {
        return name;
    }
    public void setname(string name) {
        this.name = name;
    }
    public string getemail() {
        return email;
    }
    public void setemail(string email) {
        this.email = email;
    }
    @override
    public string tostring() {
        return "user [id=" + id + ", age=" + age + ", name=" + name + ", email=" + email + "]";
    }
    
    
    
}

三、测试controller

需要在类上面加上注解：@validated

import javax.validation.valid;
import javax.validation.constraints.notnull;
 
import org.springframework.validation.annotation.validated;
import org.springframework.web.bind.annotation.requestmapping;
import org.springframework.web.bind.annotation.restcontroller;
 
@restcontroller
@validated
public class usercontroller {
 
    @requestmapping("/get")
    public user get(@notnull(message = "id不能为空") integer id, 
            @notnull(message = "姓名不能为空") string name) {
        user user = new user();
        user.setname("lisi");
        user.setid(id);
        return user;
    }
    
    
    @requestmapping("/save")
    public user get(@valid user user) {
        return user;
    }
    
}

四、hibernate-validator全局异常处理

import java.util.list;
import java.util.set;
 
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import javax.validation.constraintviolation;
import javax.validation.constraintviolationexception;
 
import org.springframework.http.httpstatus;
import org.springframework.validation.bindexception;
import org.springframework.validation.fielderror;
import org.springframework.web.bind.methodargumentnotvalidexception;
import org.springframework.web.bind.annotation.controlleradvice;
import org.springframework.web.bind.annotation.exceptionhandler;
import org.springframework.web.bind.annotation.responsebody;
 
@controlleradvice
public class globalexception {
    
    public static final string delim = "，";
 
    @exceptionhandler(exception.class)
    @responsebody
    public string exceptionhandler(httpservletrequest request, httpservletresponse response, 
            exception e) {
        
        
        if(e instanceof constraintviolationexception) {
            //@requestparam上参数validate失败后抛出的异常
            
            constraintviolationexception cve = (constraintviolationexception) e;
 
            set<constraintviolation<?>> violations = cve.getconstraintviolations();
            stringbuffer sb = new stringbuffer("");
            for (constraintviolation<?> constraintviolation : violations) {
                sb.append(constraintviolation.getmessage()).append(delim);
            }
            if(sb.indexof(delim) > -1) {
                sb.deletecharat(sb.length() - 1);
            }
            system.out.println("constraintviolationexception sb="+sb);
            
            response.setstatus(httpstatus.bad_request.value());
            return sb.tostring();
            
        }else if(e instanceof bindexception) {
            //@requestparam上实体对象validate失败后抛出的异常
            
            bindexception be = (bindexception) e;
            system.out.println("be.getmessage()="+be.getmessage());
            
            list<fielderror> fielderrors = be.getbindingresult().getfielderrors();
            stringbuffer sb = new stringbuffer("");
            for (fielderror fielderror : fielderrors) {
                sb.append(fielderror.getdefaultmessage()).append(delim);
                //system.out.println("fielderror.getdefaultmessage() =" + fielderror.getdefaultmessage());
            }
            if(sb.indexof(delim) > -1) {
                sb.deletecharat(sb.length() - 1);
            }
            system.out.println("bindexception sb="+sb);
            response.setstatus(httpstatus.bad_request.value());
            return sb.tostring();
            
            
        }else if(e instanceof methodargumentnotvalidexception) {
            //@requestbody上validate失败后抛出的异常
            
            methodargumentnotvalidexception mave = (methodargumentnotvalidexception) e;
            system.out.println("mave.getmessage() = " + mave.getmessage());
            
            list<fielderror> fielderrors = mave.getbindingresult().getfielderrors();
            stringbuffer sb = new stringbuffer("");
            for (fielderror fielderror : fielderrors) {
                sb.append(fielderror.getdefaultmessage()).append(delim);
                //system.out.println("fielderror.getdefaultmessage() =" + fielderror.getdefaultmessage());
            }
            if(sb.indexof(delim) > -1) {
                sb.deletecharat(sb.length() - 1);
            }
            system.out.println("methodargumentnotvalidexception sb="+sb);
            response.setstatus(httpstatus.bad_request.value());
            return sb.tostring();
        }
        
        return "系统异常";
    }
}

五、hibernate-validator快速校验

hibernate-validator默认会全部校验后再返回所有错误结果，为了让hibernate-validator检查到第一个错误马上返回结果，需要配置快速校验

import javax.validation.validation;
import javax.validation.validator;
import javax.validation.validatorfactory;
 
import org.hibernate.validator.hibernatevalidator;
import org.springframework.boot.autoconfigure.condition.conditionalonmissingbean;
import org.springframework.context.annotation.bean;
import org.springframework.context.annotation.configuration;
import org.springframework.validation.beanvalidation.methodvalidationpostprocessor;
 
@configuration
public class validatorconfiguration {
 
    /**
     * 快速返回校验器
     * @return
     */
    @bean
    @conditionalonmissingbean(value = validator.class)
    public validator validator() {
        
        //hibernate-validator 6.x没问题，7.x有问题
        validatorfactory validatorfactory = validation.byprovider(hibernatevalidator.class)
                .configure()
                .failfast(true)
                //.addproperty("hibernate.validator.fail_fast", "true")
                .buildvalidatorfactory();
        
        return validatorfactory.getvalidator();
    }
    
    
    /**
     * 设置快速校验，返回方法校验处理器
     * @return
     */
    @bean
    @conditionalonmissingbean(value = methodvalidationpostprocessor.class)
    public methodvalidationpostprocessor methodvalidationpostprocessor() {
        methodvalidationpostprocessor postprocessor = new methodvalidationpostprocessor();
        postprocessor.setvalidator(validator());
        return postprocessor;
    }
    
}

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