spring 自定义校验规则

代码

自定义注解

Money 

package com.feizhou.common.validator;

 
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
 
import javax.validation.Constraint;
import javax.validation.Payload;
 
 
@Target({ElementType.FIELD, ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy=MoneyValidator.class)
public @interface Money {
   
    String message() default"不是金额形式";
   
    Class<?>[] groups() default {};
   
    Class<? extends Payload>[] payload() default {};
 
}

MoneyValidator 

package com.feizhou.common.validator;

 
import java.util.regex.Pattern;
 
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
 
 
public class MoneyValidator implements ConstraintValidator<Money, Double> {
 
    private String moneyReg = "^\\d+(\\.\\d{1,2})?$";//表示金额的正则表达式
    private Pattern moneyPattern = Pattern.compile(moneyReg);
   
    public void initialize(Money money) {
       // TODO Auto-generated method stub
      
    }
 
    public boolean isValid(Double value, ConstraintValidatorContext arg1) {
       if (value == null)
    	   //金额是空的，返回true，是因为如果null，则会有@NotNull进行提示
    	   //如果这里false的话，那金额是null，@Money中的message也会进行提示
    	   //自己可以尝试
           return true;
       return moneyPattern.matcher(value.toString()).matches();
    }
 
}

测试

package com.feizhou.core.bean.demo;

import java.util.Date;

import javax.validation.constraints.Max;
import javax.validation.constraints.Min;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Pattern;
import javax.validation.constraints.Size;

import com.feizhou.common.tools.commonTools.ValidatorUtil;
import com.feizhou.common.validator.Money;

public class DemoQuery {
		@Max(value=12,message = " 部门id必须小于12")
	   private Integer departmentID;// 部门id
		@Pattern(regexp = "\\S{6,30}",message = "部门父id必须在6-30之间")
	    private String parentID; // 部门父id
		@Pattern(regexp = "^((1[3,5,8][0-9])|(14[5,7])|(17[0,6,7,8])|(19[7]))\\d{8}$",message = "钱爸爸用户名输入错误")
	    private String name;//部门名称
//	    @Max(value = 100,message = "部门编码必须小于100")
//	    @Min(value = 18,message = "部门编码必须大于18")
	    private Integer code;// 部门编码
//	    @Size(max = 4,min=1,message = "备注大小不能超过4")
	    @Max(value = 100,message = "备注必须小于100")
	    @Min(value = 18,message = "备注必须大于18")
	    private String remarks;// 备注
	    private Boolean isActive; // 是否激活 
//	    @Past(message="创建日期必须小于当前日期")
	    private Date createDate; // 创建日期
	    @NotNull(message = "密码不能为空")
	    @Size(max = 4,message = "密码大小不能超过4")
	    private String pass;//密码
	    
	    
	    @NotNull(message="金额不能为空")
		@Money(message="金额格式不正确")
		private Double money;

	    
		public Double getMoney() {
			return money;
		}
		public void setMoney(Double money) {
			this.money = money;
		}
		public String getPass() {
			return pass;
		}
		public void setPass(String pass) {
			this.pass = pass;
		}
		public Integer getDepartmentID() {
			return departmentID;
		}
		public void setDepartmentID(Integer departmentID) {
			this.departmentID = departmentID;
		}
		public String getParentID() {
			return parentID;
		}
		public void setParentID(String parentID) {
			this.parentID = parentID;
		}
		public String getName() {
			return name;
		}
		public void setName(String name) {
			this.name = name;
		}
		public Integer getCode() {
			return code;
		}
		public void setCode(Integer code) {
			this.code = code;
		}
		public String getRemarks() {
			return remarks;
		}
		public void setRemarks(String remarks) {
			this.remarks = remarks;
		}
		public Boolean getIsActive() {
			return isActive;
		}
		public void setIsActive(Boolean isActive) {
			this.isActive = isActive;
		}
		public Date getCreateDate() {
			return createDate;
		}
		public void setCreateDate(Date createDate) {
			this.createDate = createDate;
		}
		@Override
		public String toString() {
			return "DemoQuery [departmentID=" + departmentID + ", parentID=" + parentID + ", name=" + name + ", code="
					+ code + ", remarks=" + remarks + ", isActive=" + isActive + ", createDate=" + createDate + "]";
		}
		public DemoQuery() {
			super();
		}
	    
		public static void main(String[] args) {
			  DemoQuery fsre=new DemoQuery();
			 ValidatorUtil.validateThrowE(fsre);
		}
	 
}

验证的工具类

package com.feizhou.common.tools.commonTools;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
 
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.groups.Default;

import com.feizhou.common.exception.MyException;
 
public class ValidatorUtil {
    private static Validator validator = Validation.buildDefaultValidatorFactory()
            .getValidator();
    /**
     * 
     * @Description (验证对象的注解)
     * @author feizhou
     * @Date 2018年7月2日下午5:04:04  
     * @version 1.0.0
     * @param obj
     * @return
     */
    public static <T> Map<String,StringBuffer> validate(T obj){
    	Map<String,StringBuffer> errorMap = null;
        Set<ConstraintViolation<T>> set = validator.validate(obj,Default.class);
        if(set != null && set.size() >0 ){
        	errorMap = new HashMap<String,StringBuffer>();
        	String property = null;
            for(ConstraintViolation<T> cv : set){
            	//这里循环获取错误信息，可以自定义格式
            	property = cv.getPropertyPath().toString();
            	if(errorMap.get(property) != null){
            		errorMap.get(property).append("," + cv.getMessage());
            	}else{
            		StringBuffer sb = new StringBuffer();
            		sb.append(cv.getMessage());
            		errorMap.put(property, sb);
            	}
            }
        }
        return errorMap;
    }
    
    /**
     * 
     * @Description (检测对象是否有错误,有错误抛出异常)
     * @author feizhou
     * @Date 2018年7月2日下午1:49:24  
     * @version 1.0.0
     * @param obj
     * @return
     */
    public static <T> String validateThrowE(T obj){
    	
    	Map<String,StringBuffer> errorMap= validate(obj);
    	List<StringBuffer> list=new ArrayList<StringBuffer>();
    	if(StringUtil.isNotEmpty(errorMap)){//有错误
    		Set<String> keys = errorMap.keySet();
    		for (String key : keys) {
    			list.add(errorMap.get(key));
			}
    	} 
		if(StringUtil.isNotEmpty(list)){
			throw new MyException(list.toString());	
		 }
		return null;
    }
 
   
}

结果

log4j:WARN No appenders could be found for logger (org.jboss.logging).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
Exception in thread "main" com.feizhou.common.exception.MyException: [金额不能为空, 密码不能为空]
	at com.feizhou.common.tools.commonTools.ValidatorUtil.validateThrowE(ValidatorUtil.java:68)
	at com.feizhou.core.bean.demo.DemoQuery.main(DemoQuery.java:106)