QueryRunnerオブジェクトをサブクラス化し、適切なqueryメソッドを微調整して複数の結果セットを処理するのは簡単です。UserInfo次のコードを使用して、オブジェクトの完全なリストを取得できました
ResultSetHandler<List<UserInfo>> h = new BeanListHandler<UserInfo>(UserInfo.class);
MyQueryRunner run = new MyQueryRunner(ds);
String sql =
"EXEC dbo.Gain_Web_GetCompanyRepByIndRefID @RefID=?";
List<UserInfo> result = run.query(sql, h, 2);
どこMyQueryRunnerですか
package com.example.so36623732;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import javax.sql.DataSource;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.ResultSetHandler;
public class MyQueryRunner extends QueryRunner {
public MyQueryRunner(DataSource ds) {
super(ds);
}
/**
* Executes the given SELECT or EXEC SQL query and returns a result object.
* The <code>Connection</code> is retrieved from the
* <code>DataSource</code> set in the constructor.
* @param <T> The type of object that the handler returns
* @param sql The SQL statement to execute.
* @param rsh The handler used to create the result object from
* the <code>ResultSet</code>.
* @param params Initialize the PreparedStatement's IN parameters with
* this array.
* @return An object generated by the handler.
* @throws SQLException if a database access error occurs
*/
public <T> T query(String sql, ResultSetHandler<T> rsh, Object... params) throws SQLException {
Connection conn = this.prepareConnection();
return this.<T>query(conn, true, sql, rsh, params);
}
/**
* Calls query after checking the parameters to ensure nothing is null.
* @param conn The connection to use for the query call.
* @param closeConn True if the connection should be closed, false otherwise.
* @param sql The SQL statement to execute.
* @param params An array of query replacement parameters. Each row in
* this array is one set of batch replacement values.
* @return The results of the query.
* @throws SQLException If there are database or parameter errors.
*/
@SuppressWarnings("unchecked")
private <T> T query(Connection conn, boolean closeConn, String sql, ResultSetHandler<T> rsh, Object... params)
throws SQLException {
if (conn == null) {
throw new SQLException("Null connection");
}
if (sql == null) {
if (closeConn) {
close(conn);
}
throw new SQLException("Null SQL statement");
}
if (rsh == null) {
if (closeConn) {
close(conn);
}
throw new SQLException("Null ResultSetHandler");
}
PreparedStatement stmt = null;
ResultSet rs = null;
T result = null;
List<T> allResults = null;
try {
stmt = this.prepareStatement(conn, sql);
this.fillStatement(stmt, params);
rs = this.wrap(stmt.executeQuery());
allResults = (List<T>)rsh.handle(rs);
while (stmt.getMoreResults()) {
rs = stmt.getResultSet();
result = rsh.handle(rs);
allResults.addAll((List<T>)result);
}
} catch (SQLException e) {
this.rethrow(e, sql, params);
} finally {
try {
close(rs);
} finally {
close(stmt);
if (closeConn) {
close(conn);
}
}
}
return (T) allResults;
}
}
