java - 有什么方法可以将preparedStatement 打印到控制台System.out.println

Question

我需要一种查看preparedStatement 以进行调试的方法，这是我希望将preparedStatement 打印到控制台的Java 代码。

public class UnitTestDMUtility_Select {


@Test
public void testQUERY_CHECKBOTHPARTS() throws Exception{

    UnitTestHelper helper = new UnitTestHelper();
    Connection con = helper.getConnection(helper.sourceDBUrl);
    Connection conTarget = helper.getConnection(helper.targetDBUrl);


    PreparedStatement stmt = con.prepareStatement(DMUtility.QUERY_CHECKBOTHPARTS);
    stmt.setInt(1, 101);
    ResultSet sourceVal = stmt.executeQuery();
    //Here is the QUERY
    //select count(*) from tr_demand where demandtypeid=101
    stmt = conTarget.prepareStatement(DMUtility.QUERY_CHECKBOTHPARTS);
    stmt.setInt(1, 101);
    ResultSet targetVal = stmt.executeQuery();

    assertTrue(helper.resultSetsEqual2(sourceVal,targetVal));

}

} 

Answer 1

为了回答您的问题，我通过执行以下操作将查询输出到日志文件（和控制台）：

PreparedStatement stmt = con.prepareStatement(DMUtility.QUERY_CHECKBOTHPARTS);
stmt.setInt(1, 101);

//Write stmt to console: 
System.out.println(stmt.toString());

Answer 2

对于查询调试，我通常使用库jamon，它是一个 JDBC 代理，记录每条语句被调用