Introduction
The JdbcTemplate class executes SQL queries, update statements and stored procedure calls, performs iteration over ResultSets and extraction of returned parameter values. It also catches JDBC exceptions and translates them to the generic, more informative, exception hierarchy defined in the org.springframework.dao package.
Instances of the JdbcTemplate class are threadsafe once configured so it can be safely inject this shared reference into multiple DAOs.
Basic Query methods
Some of the queryFor* methods available in JdbcTemplate are useful for simple sql statements that perform CRUD operations.
Querying for Date
Querying for Integer
OR
The Spring JDBC template offers several ways to query the database. QueryForList returns a list of HashMaps. The name of the column is the key in the hashmap for the values in the table. More convenient is the usage of ResultSetExtractor or RowMapper which allows to translates the SQL result direct into an object (ResultSetExtractor) or a. In this Spring CRUD Example, we will build a Simple Spring Application and perform CRUD operations using Spring JdbcTemplate.We will create a simple Employee management application which has abilities to create a new employee, update the existing employee, get a particular employee/ all employee and finally delete the existing employee. A JDBC batch update is multiple updates using the same database session. That is, we don't have to open connections multiple times. In our previous example, let's say we want to insert multiple Person objects in the database.
Querying for String
Querying for List
Batch operations
JdbcTemplate also provides convenient methods to execute batch operations.
Open rft file. Batch Insert
Some of the queryFor* methods available in JdbcTemplate are useful for simple sql statements that perform CRUD operations.
Querying for Date
Querying for Integer
OR
The Spring JDBC template offers several ways to query the database. QueryForList returns a list of HashMaps. The name of the column is the key in the hashmap for the values in the table. More convenient is the usage of ResultSetExtractor or RowMapper which allows to translates the SQL result direct into an object (ResultSetExtractor) or a. In this Spring CRUD Example, we will build a Simple Spring Application and perform CRUD operations using Spring JdbcTemplate.We will create a simple Employee management application which has abilities to create a new employee, update the existing employee, get a particular employee/ all employee and finally delete the existing employee. A JDBC batch update is multiple updates using the same database session. That is, we don't have to open connections multiple times. In our previous example, let's say we want to insert multiple Person objects in the database.
Querying for String
Querying for List
Batch operations
JdbcTemplate also provides convenient methods to execute batch operations.
Open rft file. Batch Insert
Batch Update
There are further batchUpdate methods which accept List of object array as input parameters. These methods internally use BatchPreparedStatementSetter to set the values from the list of arrays into sql statement.
Select For Update Jdbc Example
NamedParameterJdbcTemplate extension of JdbcTemplate
The NamedParameterJdbcTemplate class adds support for programming JDBC statements using named parameters, as opposed to programming JDBC statements using only classic placeholder ( '?') arguments. The NamedParameterJdbcTemplate class wraps a JdbcTemplate, and delegates to the wrapped JdbcTemplate to do much of its work.
Query for List of Maps
SQLRowSet
Spring Jdbc Jdbctemplate
OR
