每張Excel的sheet有多少列是隨機不確定的,每列頭作爲字段信息,通過獲取Excel表sheet每列頭信息,作爲表的字段信息,動態創建臨時表,並且獲取臨時表中數據。
一:
public interface ProjectInfoMapper extends Mapper<ProjectInfo> {
//動態創建臨時表
void createTables(String[] cloums);
//查詢臨時表中的數據
List<String> selectResult();
//插入數據到臨時表
void insetData(String[] name,Map<String,String> names);
}
二:
<mapper namespace="com.zhunda.dao.ProjectInfoMapper">
<update id="createTables" >
create TEMPORARY table tempTable (
<foreach collection="array" item="listItem" separator=",">
${listItem} varchar(30)
</foreach>
) ENGINE=InnoDB DEFAULT CHARSET=utf8
</update>
<insert id="insetData">
insert tempTable(
<foreach collection="name" item="listItem" separator=",">
${listItem}
</foreach>
)
values (
<foreach collection="names" item="listItems" separator=",">
' ${listItems} '
</foreach>
)
</insert>
<select id="selectResult" parameterType="map" resultType="java.util.Map">
select * from tempTable
</select>
</mapper>
三:
@RunWith(SpringRunner.class)
@SpringBootTest
public class AutoTableTest {
@Autowired
private ProjectInfoMapper projectInfoMapper;
@Test
public void Test(){
//假設解析Excel得到的map數據
Map<String,String> map=new HashMap<>();
map.put("a","aaaaaa");
map.put("b","bbbbbbbbbbb");
map.put("c","ccccccccccc");
//假設解析Excel得到的sheet列的頭信息,一般頭信息爲中文,需處理
String[] s={"a","b","c"};
//動態創建臨時表
projectInfoMapper.createTables(s);
//將解析數據插入臨時表
projectInfoMapper.insetData(s,map);
//查詢臨時表中數據
List<String> strings = projectInfoMapper.selectResult();
System.out.println(strings);
}
}
四:
------------------->>>>>>>>解析Excel得到想要的數據<<<<<<<<<--------------------------------