因为mybatis 的代码生成插件,xml 文件是追加,如果你执行了两次生成的话,表的映射 xml 里的代码会生成两遍,会报如下错误: Error parsing Mapper XML. Cause: java.lang.IllegalArgumentException: Result Maps collection already contains value for com.zjq.xxxMapper.BaseResultMap jdbcType 写错了 会报如下错误: C...
// stmt is a Statement object ((stmt.getMoreResults(current) == false) && (stmt.getUpdateCount() == -1)) パラメータ: current - getResultSetメソッドを使用して取得した現在のResultSetオブジェクトに対する処理を示す次のいずれかのStatement定数。Statement.CLOSE_CURRENT_RESULT、Statement.KEEP...
所以有一个参数int scale用于定义小数点右边所需的位数。该参数必须大于等于 0。 JDBC 类型 NUMERIC 或 DECIMAL 时,应该使用带scale参数的方法 另外还有用户命名的输出参数或 REF(引用)输出参数,用户命名类型的示例有:STRUCT、DISTINCT、JAVA_OBJECT 和指定的数组类型。 对于用户命名的参数,还应该提供参数的完全限定 S...
java.sql.Statement#getGeneratedKeys /** Retrieves any auto-generated keys created as a result of executing this Statement object. If this Statement object did not * generate any keys, an empty ResultSet object is returned. */ResultSetgetGeneratedKeys()throwsSQLException; 步骤: 1. 获得数据库返回的...
Package java.beans Class Statement java.lang.Object java.beans.Statement Direct Known Subclasses: Expression public class Statement extends Object A Statement object represents a primitive statement in which a single method is applied to a target and a set of arguments - as in "a.setFoo(b)". ...
In afor loop, the increment expression (e.g. i++) is first evaluated, and then the condition is tested to find out if another iteration should be done The continue statement can also be used with an optional label reference. Note:The continue statement (with or without a label reference...
(URL, properties); // Create a Statement object. s = c.createStatement(); // Delete the test table if it exists. Note: This // example assumes that the collection MYLIBRARY // exists on the system. try { s.executeUpdate("DROP TABLE MYLIBRARY.MYTABLE"); } catch (SQLException e) {...
Executes the given SQL statement and signals the driver with the given flag about whether the auto-generated keys produced by thisStatementobject should be made available for retrieval. C# [Android.Runtime.Register("executeUpdate","(Ljava/lang/String;I)I","GetExecuteUpdate_Ljava_lang_String_IHandl...
Retrieves the SQLServerStatement object that produced this SQLServerResultSet object. 复制 public java.sql.Statement getStatement() Return Value A SQLServerStatement object. Exceptions SQLServerException Remarks This getStatement method is specified by the getStatement method in the java.sql.ResultSet ...
[System.Obsolete("Use the 'Java.Sql.IStatement' type. This class will be removed in a future release.")] [Android.Runtime.Register("mono/internal/java/sql/Statement", DoNotGenerateAcw=true)] public abstract class Statement : Java.Lang.ObjectInheritance...