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 Spring > JDBC > Named Parameter Map

Named Parameter Map 

Spring JDBC Framework simplifies the use of JDBC and helps to avoid common errors. The following example shows querying records using NamedParameterJdbcTemplate class. It extracts the specified named parameters from the given map for query execution.


File Name  :  
/SpringJDBC001/conf/basic/applicationContext.xml 

File Name  :  
com/bethecoder/tutorials/spring3/tests/NamedParameterMapTest.java 
Author  :  Sudhakar KV
Email  :  kvenkatasudhakar@gmail.com
   
package com.bethecoder.tutorials.spring3.tests;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.sql.DataSource;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;

public class NamedParameterMapTest {

  /**
   @param args
   */
  public static void main(String[] args) {
    
    /**
     * Initialize context and get the NamedParameterJdbcTemplate
     */
    ApplicationContext appContext = new ClassPathXmlApplicationContext("applicationContext.xml");
    DataSource dataSource = (DataSourceappContext.getBean("dataSource");
    NamedParameterJdbcTemplate template = new NamedParameterJdbcTemplate(dataSource);

    Map<String, Object> paramMap = new HashMap<String, Object>();
    paramMap.put("start_id"1);
    paramMap.put("end_id"3);
    
    List<Map<String, Object>> rows = template.queryForList(
        "select ID, NAME, AGE from USER where ID >= :start_id and ID < :end_id"
        paramMap);
    
    System.out.println(rows);
  }

}
   

It gives the following output,
[{ID=1, NAME=Sriram, AGE=2}, {ID=2, NAME=Anu, AGE=28}]


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