JDBC “java.io.NotSerializableException” occurs while using Spring JDBC Template for connectivity and passing arguments for searching/update as parameters. Because JDBC parameters always required searialize objects.

Mostly happen when forget to use get fields value from object and class is not serializable.

Example :

Exception Message

Invalid argument value: java.io.NotSerializableException; nested exception is java.sql.SQLException: Invalid argument value: java.io.NotSerializableException

Class using

public class DynamicDashboard {
private int dashboardId;
private String dashboardName;
private String htmlContent;
private String scriptContent;
private String ruleContent;

public DynamicDashboard()
{
	super();
}

//Getter and Setters

Below is my DAO class method where this exception occured  for column RULE_CONTENT.

public void addDashboard(DynamicDashboard dynamicDashboard) {
		String sql = "INSERT INTO dynamic_dashboard "
				+ "(DASHBOARD_NAME, HTML_CONTENT,SCRIPT_CONTENT,RULE_CONTENT) VALUES (?, ?, ?,?)";

		try {
			jdbcTemplate = new JdbcTemplate(dataSource);

			jdbcTemplate.update(sql,
					new Object[] { dynamicDashboard.getDashboardName(), dynamicDashboard.getHtmlContent(),
							dynamicDashboard.getScriptContent(), dynamicDashboard});
		} catch (Exception ex) {
			logger.error(ex.getMessage());
		}

	}

In above method we forget to get last parameter value for rule like dynamicDashboard.getRuleContent()for database column RULE_CONTENT because JDBCTemplate always required serializable object and all wrapper classes(Integer, String etc.) are searializable. It will through exception “java.io.NotSerializableException” as above.

Solution :

Add get method for ruleContent for object dynamicDashboard.

Correct Code

public void addDashboard(DynamicDashboard dynamicDashboard) {
		String sql = "INSERT INTO dynamic_dashboard "
				+ "(DASHBOARD_NAME, HTML_CONTENT,SCRIPT_CONTENT,RULE_CONTENT) VALUES (?, ?, ?,?)";

		try {
			jdbcTemplate = new JdbcTemplate(dataSource);

			jdbcTemplate.update(sql,
					new Object[] { dynamicDashboard.getDashboardName(), dynamicDashboard.getHtmlContent(),
							dynamicDashboard.getScriptContent(), dynamicDashboard.getRuleContent()});
		} catch (Exception ex) {
			logger.error(ex.getMessage());
		}

	}

More Issues

For more JDBC issue solution follow link Common JDBC Issues.

Leave you feedback to enhance more on this topic so that make it more helpful for others.