Mybatis-Generator逆向工程,复杂策略(Criteria拼接条件)

基于上一篇修改

1.Generator配置文件修改,将targetRuntime改为MyBatis3

2.项目结构目录

这个xxxExample就是拼接条件用的

3.测试代码

注释写的很详细

    public static void main(String[] args) throws Exception {
        
        SqlSession session = getSqlSession();
        try {
            // 面向接口方式
            MembersMapper mapper = session.getMapper(MembersMapper.class);
            // 测试返回list集合
            // 查询(member_name like %a% and gender = '1') or email like &y&
            MembersExample example = new MembersExample();
            
            Criteria criteria = example.createCriteria();
            criteria.andMemberNameLike("%a%");
            criteria.andGenderEqualTo(1);
            
            // 每一个or条件就是一个新的Criteria
            Criteria criteria1 = example.createCriteria();
            criteria1.andEmailLike("%y%");
            // 直接拼接
            example.or(criteria1);
            
            List<Members> list = mapper.selectByExample(example);
            for (Members member : list) {
                System.out.println(member);
            }
        } finally {
            // 关闭session
            session.close();
        }
//        generatorAuto();

    }

4.查询结果

发送的sql语句如下

Setting autocommit to false on JDBC Connection [com.mysql.jdbc.JDBC4Connection@5f150435]
==>  Preparing: select id, member_name, age, gender, email from members WHERE ( member_name like ? and gender = ? ) or( email like ? ) 
==> Parameters: %a%(String), 1(Integer), %y%(String)
<==    Columns: id, member_name, age, gender, email
<==        Row: 1, jack, 25, 1, jack@beijing.com
<==        Row: 2, pnoy, 26, 0, pnoy@beijing.com
<==      Total: 2
com.Entity.Members@42e26948
com.Entity.Members@57baeedf

ok~就这样