spring切面过滤器--逻辑删除

需求描述：domain中增加【是否删除】isDelete属性。
项目背景：springmvc+jpa（springboot+jpa也试用）
方法：使用spring切面拦截，自动给该domain的查询方法，都加上是否删除为否。
备注：如果是表连接的查询方式，还是要手动修改一些sql或者jpa或者hql语句。

• spring切面过滤器工具类
• 前言
• 使用步骤
• • 1.引入库
  • 2.过滤器
  • 3.使用方法
• 总结

这篇文章将提供一个逻辑删除的切面工具类，来过滤掉已经逻辑删除的数据。

pom.xml中加入依赖

package com.xxx.framework.core;

import com.yoyowang.manager.domain.enumitem.IsFlag;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.hibernate.Session;
import org.hibernate.internal.FilterImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.persistence.EntityManager;


@Aspect
@Component
public class IsDeleteFilterAspect {

   @Autowired
    EntityManager em;

   @Before("execution(* com.xxx..*.*Ctrl*.*(..))")
   public void beforeQueryExecution(JoinPoint pjp) throws Throwable {
      FilterImpl filter = (FilterImpl) em.unwrap(Session.class).enableFilter("is_delete_filter");
      if (filter != null) {
         try {
            filter.setParameter("isDelete", IsFlag.NO.getKey());
            filter.validate();
         } catch (Exception e) {

         }
      }

   }
}

哪个domain要加逻辑删除，哪个就加上这两行注解

@FilterDef(name = “is_delete_filter”, parameters = @ParamDef(name = “isDelete”, type = “int”))
@Filter(name = “is_delete_filter”, condition = “is_delete_ = :isDelete”)

@Entity
@Table(name = "smart_org")
@org.hibernate.annotations.Table(appliesTo = "smart_org", comment = "行政区划")
@TableGenerator(name = "com.xxx.manager.domain.Organization",
        table = "PK_Sequence",
        pkColumnName = "KEY_ID_",
        valueColumnName = "GEN_VALUE_",
        pkColumnValue = "com.xxx.manager.domain.Organization",
        initialValue = 1,
        allocationSize = 1
)
@Getter
@Setter

@EntityListeners({DataBaseTimeAuditListener.class})

@FilterDef(name = "is_delete_filter", parameters = @ParamDef(name = "isDelete", type = "int"))
@Filter(name = "is_delete_filter", condition = "is_delete_ = :isDelete")
public class Organization implements Serializable {

    @Id
    @Column(name = "id_", nullable = false, columnDefinition = "int comment '主键ID'")
    @GeneratedValue(strategy = GenerationType.TABLE, generator = "com.yoyowang.manager.domain.Organization")
    private Long id;

    //行政区划编码
    @Column(name = "code_", columnDefinition = "varchar(255) comment '行政区划编码'")
    private String code;
    
 	// 是否删除
    @Enumerated(EnumType.ORDINAL)
    @Column(name = "is_delete_", length = 2, columnDefinition = "int comment '是否删除'")
    private IsFlag isDelete;
}

这就是给逻辑删除增加切面的方法，一个切面类，两行注解，搞定。