mybatis loaddata

MyBatis LoadData is a feature that allows you to load data from a file, such as a CSV or TSV file, into a database using MyBatis. It is particularly useful when you need to insert a large amount of data into a database.

To use LoadData, you first need to create a data file in the appropriate format. For example, if you are using a CSV file, each row of the file should contain the values for a single record, with each value separated by a comma. The first row of the file should contain the column names.

Next, you need to create a MyBatis mapper XML file that specifies how the data in the file should be mapped to the database. This mapper file should include a loadData element, which specifies the file location, table name, and column mappings.

Here is an example of a loadData element:

<insert id="loadData" parameterType="map">
  LOAD DATA LOCAL INFILE '${file}'
  INTO TABLE ${table}
  FIELDS TERMINATED BY ','
  LINES TERMINATED BY '\n'
  (${columnMappings})
</insert>

In this example, ${file} and ${table} are placeholders for the file location and table name, respectively. ${columnMappings} is a placeholder for the column mappings, which should be a comma-separated list of column names in the order they appear in the data file.

Once you have created the mapper XML file, you can use MyBatis to execute the loadData statement and insert the data into the database.

Overall, MyBatis LoadData is a convenient and efficient way to insert large amounts of data into a database using MyBatis.