前面我寫過ssh：ssh(Spring+Spring mvc+hibernate)簡單增刪改查案例 和ssm：ssm(Spring+Spring mvc+mybatis)的案例，需要了解的可以去看看，今天我寫了一下ssm(spring+springmvc+mybatis)全注解的方式又重新寫了一遍兩表增刪改查的案例，其中別的地方都一樣，就是有幾個文件不一樣，
1.其中:
mybatis-config.xml中：

<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE configurationPUBLIC "-//mybatis.org//DTD Config 3.0//EN""http://mybatis.org/dtd/mybatis-3-config.dtd"> <configuration> <settings><!-- 打印查詢語句 --><setting name="logImpl" value="STDOUT_LOGGING" /> </settings> <typeAliases><typeAlias alias="Emp" type="org.entity.Emp"/><typeAlias alias="Dept" type="org.entity.Dept"/> </typeAliases><mappers><mapper class="org.dao.IEmpMapper"/><mapper class="org.dao.IDeptMapper"/></mappers> </configuration>

注意看， ，mapper后面是class,不是resource,一定要注意
2.還有：我們不需要EmpMapper.xml和DeptMapper.xml文件，直接刪掉就可以了
3.修改我們的IEmpMapper接口為：

package org.dao;import java.util.List;import org.apache.ibatis.annotations.Delete; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.One; import org.apache.ibatis.annotations.Result; import org.apache.ibatis.annotations.Results; import org.apache.ibatis.annotations.Select; import org.apache.ibatis.annotations.Update; import org.entity.Emp;public interface IEmpMapper {//根據編號刪除.@Delete("delete from emp where eid = #{eid} ")int deleteByPrimaryKey(Integer eid);//添加@Insert("insert into emp (eid, ename, eage, edate, did) " +"values (#{eid,jdbcType=INTEGER}," +" #{ename,jdbcType=VARCHAR}, " +"#{eage,jdbcType=INTEGER}, " +"#{edate,jdbcType=TIMESTAMP}," +" #{did,jdbcType=INTEGER})")int insert(Emp record);//根據編號查詢@Select("select * from emp where eid = #{eid}")@Results({@Result(id=true,property="eid",column="eid"),@Result(property="ename",column="ename"),@Result(property="eage",column="eage"),@Result(property="dept",column="did",javaType=org.entity.Dept.class,one=@One(select="org.dao.IDeptMapper.selectByPrimaryKey"))})Emp selectByPrimaryKey(Integer eid);//修改@Update("pdate emp " +" set ename = #{ename,jdbcType=VARCHAR}, " +" eage = #{eage,jdbcType=INTEGER}, " +" edate = #{edate,jdbcType=TIMESTAMP}, " +" did = #{did,jdbcType=INTEGER} " +"where eid = #{eid,jdbcType=INTEGER}")int updateByPrimaryKey(Emp record);//查詢全部@Select("select * from emp")@Results({@Result(id=true,property="eid",column="eid"),@Result(property="ename",column="ename"),@Result(property="eage",column="eage"),@Result(property="dept",column="did",javaType=org.entity.Dept.class,one=@One(select="org.dao.IDeptMapper.selectByPrimaryKey"))})List<Emp> findEmpAll();//根據部門編號查詢員工信息@Select("select * from emp where did = #{dids}")@Results({@Result(id=true,property="eid",column="eid"),@Result(property="ename",column="ename"),@Result(property="eage",column="eage"),@Result(property="dept",column="did",javaType=org.entity.Dept.class,one=@One(select="org.dao.IDeptMapper.selectByPrimaryKey"))})List<Emp> findEmpByDept(int did);}

4.修改我們的IDeptMapper接口為：

package org.dao;import java.util.List;import org.apache.ibatis.annotations.Delete; import org.apache.ibatis.annotations.Insert; import org.apache.ibatis.annotations.Many; import org.apache.ibatis.annotations.Result; import org.apache.ibatis.annotations.Results; import org.apache.ibatis.annotations.Select; import org.apache.ibatis.annotations.Update; import org.entity.Dept;public interface IDeptMapper {@Delete("delete from dept where id = #{id}")int deleteByPrimaryKey(Integer id);@Insert("insert into dept (id, name, loc )" +" values (#{id,jdbcType=INTEGER}, " +"#{name,jdbcType=VARCHAR}, " +"#{loc,jdbcType=VARCHAR})")int insert(Dept record);@Select("select * from dept where id = #{id}")@Results({@Result(id=true,property="id",column="id"),@Result(property="name",column="name"),@Result(property="loc",column="loc"),@Result(property="empList",column="id",javaType=List.class,many=@Many(select="org.dao.IEmpMapper.findEmpByDept"))})Dept selectByPrimaryKey(Integer id);@Update("update dept " +"set name = #{name,jdbcType=VARCHAR}, " +" loc = #{loc,jdbcType=VARCHAR} " +"where id = #{id,jdbcType=INTEGER}")int updateByPrimaryKey(Dept record);@Select("select * from dept")List<Dept> findDeptAll(); }

然后就可以正常的主外鍵關聯，包括查詢顯示，如圖：

需要注意的是主外鍵映射，我總結了以下的方法，大家可以進行看一下：

一： @Select("select * from dept where id = #{id}")@Results({@Result(id=true,property="id",column="id"),@Result(property="name",column="name"),@Result(property="loc",column="loc"),@Result(property="實體類里面的屬性",column="id",javaType=List.class,many=@Many(select="多方的接口.根據一方的編號查詢多方的集合"))})Dept selectByPrimaryKey(Integer id);多：//根據編號查詢@Select("select * from emp where eid = #{eid}")@Results({@Result(id=true,property="eid",column="eid"),@Result(property="ename",column="ename"),@Result(property="eage",column="eage"),@Result(property="實體中的對象",column="外鍵列",javaType=一方類.class,one=@One(select="一方接口.根據一方編號查詢信息"))})Emp selectByPrimaryKey(Integer eid);//查詢全部@Select("select * from emp")@Results({@Result(id=true,property="eid",column="eid"),@Result(property="ename",column="ename"),@Result(property="eage",column="eage"),@Result(property="實體中的對象",column="外鍵列",javaType=一方類.class,one=@One(select="一方接口.根據一方編號查詢信息"))})List<Emp> findEmpAll();//根據部門編號查詢員工信息@Select("select * from emp where did = #{dids}")@Results({@Result(id=true,property="eid",column="eid"),@Result(property="ename",column="ename"),@Result(property="eage",column="eage"),@Result(property="實體中的對象",column="外鍵列",javaType=一方類.class,one=@One(select="一方接口.根據一方編號查詢信息"))})List<Emp> findEmpByDept(int did);

按照這個方法配置保證阿彌陀佛了！！！
下面就是源碼：
控制器：
DeptController
EmpController
Dao層：
IDeptMapper
IEmpMapper
DaoImpl層：
DeptMapperImpl
EmpMapperImpl
實體類層：
Dept
Emp
Service層：
IDeptService
IEmpService
ServiceImpl層：
DeptServiceImpl
EmpServiceImpl
配置文件：
applicationContext-servlet.xml
applicationContext.xml
mybatis-config.xml
web.xml
前臺頁面：
index.jsp
saveDept.jsp
saveEmp.jsp
showDept.jsp
showEmp.jsp
updateDept.jsp
updateEmp.jsp

總結

以上是生活随笔為你收集整理的mybatis使用全注解的方式案例（包含一对多关系映射）的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。