若依框架数据源切换为pg库

一 切换数据源

在ruoyi-admin项目里引入pg数据库驱动

<dependency>
    <groupId>org.postgresqlgroupId>
    <artifactId>postgresqlartifactId>
    <version>42.2.18version>
dependency>

修改配置文件里的数据源为pg

spring:
    datasource:
        type: com.alibaba.druid.pool.DruidDataSource
        driverClassName: org.postgresql.Driver
        druid:
            # 主库数据源
            master:
                url: jdbc:postgresql://192.168.119.128:5432/FDS?stringtype=unspecified
                username: postgres
                password: ts123456

二 切换函数以及语法

因为pg库里没有dual表,所以把配置文件里validationQuery的值,从SELECT 1 FROM DUAL 换为:select version()来判断数据库是否正常连接

PageHelper分页插件换成pgsql的

pagehelper:
  helperDialect: postgresql
  supportMethodsArguments: true
  params: count=countSql

在mapper.xml里全局搜索sysdate(),换为now()
在mapper.xml里全局搜索ifnull(字段,‘’) 函数,换成 COALESCE(字段,‘’)

char类型的值,mysql可以不加引号,但是pg必须加单引号

mapper.xml文件里,搜索status = 0 ,改为 status = '0'

搜索`query` ,换为query

全局搜索database(),换为CURRENT_SCHEMA()

xml里搜索sysdate()函数,换为now()

三 加自增序列

凡是有自增主键的表,都要加自增序列

CREATE SEQUENCE sys_user_id_seq
	START WITH 3
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;
	
-- 设置表某个字段自增
alter table sys_user alter column user_id set default nextval('sys_user_id_seq');

-- 从当前最大id依次递增
--select setval('sys_user_id_seq',(select max(user_id) from sys_user));
CREATE SEQUENCE sys_oper_log_id_seq
	START WITH 3
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;

-- 设置表某个字段自增
alter table sys_oper_log alter column oper_id set default nextval('sys_oper_log_id_seq');


-- 从当前最大id依次递增
--select setval('sys_oper_log_id_seq',(select max(oper_id) from sys_oper_log));
CREATE SEQUENCE sys_role_id_seq
	START WITH 3
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;

-- 设置表某个字段自增
alter table sys_role alter column role_id set default nextval('sys_role_id_seq');
CREATE SEQUENCE sys_notice_id_seq
	START WITH 3
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;

-- 设置表某个字段自增
alter table sys_notice alter column notice_id set default nextval('sys_notice_id_seq');
CREATE SEQUENCE sys_dict_type_id_seq
	START WITH 11
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;

-- 设置表某个字段自增
alter table sys_dict_type alter column dict_id set default nextval('sys_dict_type_id_seq');
CREATE SEQUENCE sys_dept_id_seq
	START WITH 11
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;

-- 设置表某个字段自增
alter table sys_dept alter column dept_id set default nextval('sys_dept_id_seq');

SELECT 'CREATE SEQUENCE ' || sequence_name || ' START ' ||  start_value || ';' from information_schema.sequences;
CREATE SEQUENCE gen_table_id_seq
	START WITH 1
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;

-- 设置表某个字段自增
alter table gen_table alter column table_id set default nextval('gen_table_id_seq');
CREATE SEQUENCE gen_table_column_id_seq
	START WITH 1
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;

-- 设置表某个字段自增
alter table gen_table_column alter column column_id set default nextval('gen_table_column_id_seq');
CREATE SEQUENCE sys_post_id_seq
	START WITH 5
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;

-- 设置表某个字段自增
alter table sys_post alter column post_id set default nextval('sys_post_id_seq');
CREATE SEQUENCE sys_dict_data_code_seq
	START WITH 30
	INCREMENT BY 1
	NO MINVALUE
	NO MAXVALUE 
	CACHE 1;

-- 设置表某个字段自增
alter table sys_dict_data alter column dict_code set default nextval('sys_dict_data_code_seq');

查询序列

SELECT 'CREATE SEQUENCE ' || sequence_name || ' START ' ||  start_value || ';' from information_schema.sequences;

删除序列

DROP SEQUENCE sys_oper_log_id_seq

四 加默认值、加引号

凡是之前是char类型的字段,并且有默认值的,都需要在navicat里添加默认值,如sys_user表、sys_role、sys_dept表的del_flag、status字段,设置默认值,注意,要加引号。sys_menu、sys_post、sys_notice、sys_loggininfo、sys_job_log、sys_dict_type、sys_dict_data表的status字段,设置默认值0,加引号。

若依框架数据源切换为pg库_第1张图片

五 改代码

SysRole.java里的menuCheckStrictly、deptCheckStrictly改为int类型,index.vue里的menuCheckStrictly、deptCheckStrictly,由true改为1,搜索vue文件里的“父子联动”,注释掉。

GenTableMapper.xml里的id=“selectDbTableList”,改为下边这种

 <select id="selectDbTableList" parameterType="GenTable" resultMap="GenTableResult">
        select * from information_schema.tables
        where table_schema = (select CURRENT_SCHEMA())
        AND table_name NOT LIKE 'qrtz_%' AND table_name NOT LIKE 'gen_%'
        AND table_name NOT IN (select table_name from gen_table)
        <if test="tableName != null and tableName != ''">
            AND lower(table_name) like lower(concat('%', #{tableName}, '%'))
        if>
        
select>

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