我如何使用扩展JdbcDaoSupport的类？

Question

我正在使用从JdbcDaoSupport扩展的类，现在我收到错误

Invocation of init method failed; nested exception is java.lang.IllegalArgumentException: 'dataSource' or 'jdbcTemplate' is required

我真的不知道如何表明这一点，所以这个类不会抛出异常。

该课程如下：

package org.springframework.jdbc.core.support;

import java.sql.Connection;
import javax.sql.DataSource;
import org.springframework.dao.support.DaoSupport;
import org.springframework.jdbc.CannotGetJdbcConnectionException;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceUtils;
import org.springframework.jdbc.support.SQLExceptionTranslator;

public abstract class JdbcDaoSupport extends DaoSupport {
    private JdbcTemplate jdbcTemplate;

    public JdbcDaoSupport() {
    }

    public final void setDataSource(DataSource dataSource) {
        if(this.jdbcTemplate == null || dataSource != this.jdbcTemplate.getDataSource()) {
            this.jdbcTemplate = this.createJdbcTemplate(dataSource);
            this.initTemplateConfig();
        }

    }

    protected JdbcTemplate createJdbcTemplate(DataSource dataSource) {
        return new JdbcTemplate(dataSource);
    }

    public final DataSource getDataSource() {
        return this.jdbcTemplate != null?this.jdbcTemplate.getDataSource():null;
    }

    public final void setJdbcTemplate(JdbcTemplate jdbcTemplate) {
        this.jdbcTemplate = jdbcTemplate;
        this.initTemplateConfig();
    }

    public final JdbcTemplate getJdbcTemplate() {
        return this.jdbcTemplate;
    }

    protected void initTemplateConfig() {
    }

    protected void checkDaoConfig() {
        if(this.jdbcTemplate == null) {
            throw new IllegalArgumentException("\'dataSource\' or \'jdbcTemplate\' is required");
        }
    }

    protected final SQLExceptionTranslator getExceptionTranslator() {
        return this.getJdbcTemplate().getExceptionTranslator();
    }

    protected final Connection getConnection() throws CannotGetJdbcConnectionException {
        return DataSourceUtils.getConnection(this.getDataSource());
    }

    protected final void releaseConnection(Connection con) {
        DataSourceUtils.releaseConnection(con, this.getDataSource());
    }
}

但我想我必须在扩展此类的类中包含dataSource。知道怎么做吗？