优化自动值ID的插件

liurunyu

2024-05-20 c65c19ad434b82e45b3cc2ff6343d19ee2b3fc59

优化自动值ID的插件

 pms-parent/pms-common/src/main/java/com/dy/common/mybatis/AutoGenerateIdInterceptor.java

@@ -1,8 +1,6 @@
package com.dy.common.mybatis;


import com.alibaba.fastjson2.JSONObject;
import com.alibaba.fastjson2.JSONWriter;
import com.dy.common.po.BaseEntity;
import com.dy.common.util.IDLongGenerator;
import org.apache.ibatis.executor.Executor;
@@ -26,7 +24,6 @@
    static int MAPPED_STATEMENT_INDEX = 0;
    static int PARAMETER_INDEX = 1;
    static String BASE_FIELD_SET_PRIMARY_KEY_FUNTION_NAME = "setId";
    static String BASE_FIELD_SET_PRIMARY_KEY_FUNTION_NAME2 = "setUserId";

    /**
     * 拦截逻辑实现
@@ -40,24 +37,15 @@
        if (commandType.equals(SqlCommandType.INSERT)) {
            Object entity = invocation.getArgs()[PARAMETER_INDEX];
            if (entity instanceof BaseEntity) {
                //Class<? extends Object> entityClass = entity.getClass();
                Class<?> entityClass = entity.getClass();
                Method setMt = null ;
                Method setIdMt = null ;
                try{
                    // 添加用户时userId为自动生成主键。roleId存在时是为用户绑角色
                    String jsonString = JSONObject.toJSONString(entity, JSONWriter.Feature.WriteMapNullValue);
                    JSONObject jsonObject = JSONObject.parseObject(jsonString);
                    if(jsonObject.containsKey("userId") && !jsonObject.containsKey("roleId")) {
                        setMt = entityClass.getMethod(BASE_FIELD_SET_PRIMARY_KEY_FUNTION_NAME2, Long.class) ;
                    }else {
                        //有一些实体没有id，例如中间表
                        setMt = entityClass.getMethod(BASE_FIELD_SET_PRIMARY_KEY_FUNTION_NAME, Long.class) ;
                    }
                    setIdMt = entityClass.getMethod(BASE_FIELD_SET_PRIMARY_KEY_FUNTION_NAME, Long.class) ;
                }catch (Exception e){
                    //当entityClass没有setId方法时，会抛出异常
                }
                if(setMt != null){
                    setMt.invoke(entity, new IDLongGenerator().generate());
                if(setIdMt != null){
                    setIdMt.invoke(entity, new IDLongGenerator().generate());
                }

                invocation.getArgs()[PARAMETER_INDEX] = entity;