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Spring provides KeyHolder which helps to get auto generated key. KeyHolder is supported by JDBC 3.0.

• Spring Jdbc Auto-generated Primary Key Example
• Spring Jdbc Auto-generated Primary Key Mean
• Spring Jdbc Auto-generated Primary Key Function
• Spring Jdbc Auto-generated Primary Key 2017
• Spring Jdbc Auto-generate Primary Key Tutorial

6.4 Retrieving AUTO_INCREMENT Column Values through JDBC

Before version 3.0 of the JDBC API, there was no standard way of retrieving key values from databases that supported auto increment or identity columns. With older JDBC drivers for MySQL, you could always use a MySQL-specific method on the Statement interface, or issue the query SELECT LAST_INSERT_ID() after issuing an INSERT to a table that had an AUTO_INCREMENT key. Using the MySQL-specific method call isn't portable, and issuing a SELECT to get the AUTO_INCREMENT key's value requires another round-trip to the database, which isn't as efficient as possible. The following code snippets demonstrate the three different ways to retrieve AUTO_INCREMENT values. First, we demonstrate the use of the new JDBC 3.0 method getGeneratedKeys() which is now the preferred method to use if you need to retrieve AUTO_INCREMENT keys and have access to JDBC 3.0. The second example shows how you can retrieve the same value using a standard SELECT LAST_INSERT_ID() query. The final example shows how updatable result sets can retrieve the AUTO_INCREMENT value when using the insertRow() method.

Example 6.8 Connector/J: Retrieving AUTO_INCREMENT column values using Statement.getGeneratedKeys()

Example 6.9 Connector/J: Retrieving AUTO_INCREMENT column values using SELECT LAST_INSERT_ID()

Example 6.10 Connector/J: Retrieving AUTO_INCREMENT column values in Updatable ResultSets

Spring Jdbc Auto-generated Primary Key Example

Running the preceding example code should produce the following output:

At times, it can be tricky to use the SELECT LAST_INSERT_ID() query, as that function's value is scoped to a connection. So, if some other query happens on the same connection, the value is overwritten. On the other hand, the getGeneratedKeys() method is scoped by the Statement instance, so it can be used even if other queries happen on the same connection, but not on the same Statement instance.

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This Spring JDBC tutorial helps you understand how to use the SimpleJdbcInsertclass with some code examples. The SimpleJdbcInsert class simplifies writing code to execute SQL INSERT statement, i.e. you don’t have to write lengthy and tedious SQL Insert statement anymore – just specify the table name, column names and parameter values.

1. Basic SimpleJdbcInsert Example

If using the JdbcTemplate class, you have to write an SQL Insert statement like this:Now, let’s see how to use the SimpleJdbcInsert class. First, create a new instance:Next, specify the table name to insert data:Next, create a Map of parameters:Note that the key for each entry is the name of a column in the table. Then execute the statement like this:The returned value is the number of rows affected by the query. The whole code snippet would be as follows:You see, you don’t have to write SQL Insert statement. And using named parameters same as the column names make the code more readable.

2. SimpleJdbcInsert Example that returns value of the auto-generated primary key

You can use the SimpleJdbcInsertclass to execute SQL Insert statement and return value of the primary column which is auto-generated. Specify the name of the primary column as follows:And then specify the parameter values and execute:You see, the executeAndReturnKey() method returns a Number object holding value of the auto-generated key of the primary column.Also in this example, we use MapSqlParameterSource instead of HashMap to specify parameter values because it allows us to chain multiple addValue() methods together. Learn more about using named parameters with Spring JDBC in this tutorial.

3. SimpleJdbcInsert Example with BeanPropertySqlParameterSource

If you have a domain model class that follows JavaBean convention, you can use the SimpleJdbcInsert class with a BeanPropertySqlParameterSource class. Consider the following example:As you can see, you don’t even have to specify parameter names and values, as long as you provide an object that has attributes same as the column names in the database table. In the above code, the contactvariable is an object of the Contact class as follows:That’s how to use the

Spring Jdbc Auto-generated Primary Key Mean

SimpleJdbcInsert

Spring Jdbc Auto-generated Primary Key Function

class in Spring JDBC. To understand how to configure your project to use Spring JDBC, please refer to the following tutorials:

Related Spring and Database Tutorials:

• Understand Spring Data JPA with Simple Example
  

Spring Jdbc Auto-generated Primary Key 2017

Other Spring Tutorials:

Spring Jdbc Auto-generate Primary Key Tutorial