mybatis 多条件查询

Controller:

  

AccountBean accountBean=new AccountBean();
                accountBean.setAccount_id(Integer.parseInt(id));
                List<AccountBean> accountBeans=getAccountService.getAccountByAid(accountBean);

Service:

 public List<AccountBean> getAccountByAid(AccountBean accountBean)
    {
        return getAccountDao.getAccountByAid(accountBean);
    }

Dao:

List<AccountBean> getAccountByAid(@Param("accountBean") AccountBean accountBean);

Mapper.xml

    <select id="getAccountByAid" parameterType="com.ctrlv.suntime.simulate.comm.entity.AccountBean" resultMap="GetAccountMap">
        SELECT account_id,account_code,account_name,cash_available,cash_init,cash_balance,total_value FROM sst_account
        <where>
            <if test="accountBean.account_id!=null">
                and account_id=#{accountBean.account_id}
            </if>
        </where>
    </select>

parameterType 对应我们的实体类 使用 <where></where> 组合查询条件  自动去除第一个and   

accountBean.account_id!=null  对象名应和Dao层的对象名一致

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转载自blog.csdn.net/smile06211114/article/details/82755831