Reading from a database
This recipe shows you how to read data from a database as part of a read/process/write step.
Getting ready
Each user will be read from the database. Make sure that the user
database table exists with some data in it:
CREATE TABLE user ( id BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT, first_name TEXT, age INT );
For each user row in the database, we'll create a User
object. Make sure that the User
class exists:
public class User { private String firstName; private int age;
Make sure that the Datasource
bean is defined with the database connection information.
How to do it…
Add a reader()
method returning JdbcCursorItemReader
-a class provided by Spring Batch:
@Bean @StepScope public JdbcCursorItemReader<User> reader() { JdbcCursorItemReader<User> ...
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