實體類：User

@Data
@NoArgsConstructor
@AllArgsConstructor
public class User {
​
  private Integer id;
  private String name;
  private String pwd;
}

方式一：使用limit實現分頁

• 介面類：UserMapper

  public interface UserMapper {
    List<User> selectLimit(Map<String,Integer> map);
  }

• 介面的實現類：UserMapper.xml

  <?xml version="1.0" encoding="UTF8" ?>
   
  <!DOCTYPE mapper
      PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
      "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
  <mapper namespace="com.hmx.mapper.UserMapper">
  ​
    <select id="selectLimit" parameterType="map" resultType="User">
       select * from mybatistest limit #{startIndex},#{pageSize};
    </select>
   
  </mapper>

• 測試

  public static void selectLimit(){
    
    SqlSession sqlSession = MybatisUtils.getSqlSession();
    UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
    
    HashMap<String, Integer> map = new HashMap<String, Integer>();
    map.put("startIndex",1);
    map.put("pageSize",3);
   
    List<User> userList = userMapper.selectLimit(map);
    
    for (User user : userList) {
      System.out.println(user);
     }
  ​
    sqlSession.close();
  }

方式二：使用RowBounds實現分頁

• 介面類：UserMapper

  public interface UserMapper {
    List<User> selectRowBounds();
  }

• 介面的實現類：UserMapper.xml

  <?xml version="1.0" encoding="UTF8" ?>
  <!DOCTYPE mapper
      PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
      "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
  <mapper namespace="com.hmx.mapper.UserMapper">
  ​
    <select id="selectRowBounds" parameterType="map" resultType="User">
       select * from mybatistest
    </select>
  </mapper>

• 測試

    public static void selectRowBounds(){
      SqlSession sqlSession = MybatisUtils.getSqlSession();
  ​
      /*
      RowBounds(int offset, int limit)
      RowBounds(開始位置, 查詢個數)
      */
      RowBounds rowBounds = new RowBounds(1, 2);
      
      /*
      selectList(String var1, Object var2, RowBounds var3)
      selectList(介面類的全限定名.方法名,一般寫null即可, RowBounds物件)
      */
      List<User> userList = sqlSession.selectList("com.hmx.mapper.UserMapper.selectRowBounds", "null", rowBounds);
      
      for (User user : userList) {
        System.out.println(user);
       }
  ​
      sqlSession.close();
     }

方式三：使用分頁外掛PageHelper進行分頁

如需使用，可參考以下連結：

如何使用分頁外掛PageHelper