dao

官网下载 mybatis generator 下载generator的release版本 mybatis-generator-core-1.4.0-bundle.zip https://github.com/mybatis/generator/releases SSM 构建基础spring mvc https://www.cnblogs.com/aeolian/p/11950980.html 整合Mybatis 除了mybatis官网下的 mybatis.jar 还需要 mybatis-spring.jar spring 与 mybatis对应 关系表 我使用的版本(之前用spring3.1整合失败，容器初始化报错升级成4.2.4的) <spring.version>4.2.4.RELEASE</spring.version> <mybatis.version>3.2.8</mybatis.version> <mybatis.spring.version>1.2.2</mybatis.spring.version> springconfig.xml配置 <!-- 让spring管理sqlsessionfactory 使用mybatis和spring整合包中的 --> <bean id="sqlSessionFactory" class="org.mybatis.spring

I have the following DAO with a query: @Dao public interface BaseballCardDao { @Query( "SELECT * FROM baseball_cards " + "WHERE brand LIKE :brand " + " AND year = :year " + " AND number LIKE :number " + " AND player_name LIKE :playerName " + " AND team LIKE :team" ) LiveData<List<BaseballCard>> getBaseballCards( String brand, int year, String number, String playerName, String team ); } The String parameters are "optional" in the sense that I can pass "%%" to match all rows due to the LIKE operator. But I cannot do this with year since it is an int . One solution is to add two different @Query

For this update query update TestDB.dbo.MyEmp set empname=? where empid=? I wrote in my DAO class MyEmployee myEmployee = new MyEmployee(); MyEmployee myEmployee =(MyEmployee )session.load(MyEmployee.class, new Integer(1700)); myEmployee.setName("updatedName"); session.update(myEmployee ); Its working fine, but I need to know for this type of update query mentioned in below update TestDB.dbo.MyEmp set empsalary=? where empid=? && empname = ? (i.e., I need to update the table by using two conditions in where clause , this can be done by HQL , but i want to know how can we implement this by