public int update(String sql, Object[] args, int[] argTypes) throws DataAccessException {
return update(sql, newArgTypePreparedStatementSetter(args, argTypes));
}
其中可用的type类型如下：
public class Types {
public final static int BIT = -7;
public final static int TINYINT = -6;
public final static int SMALLINT = 5;
public final static int INTEGER = 4;
public final static int BIGINT = -5;
public final static int FLOAT = 6;
public final static int REAL = 7;
public final static int DOUBLE = 8;
public final static int NUMERIC = 2;
public final static int DECIMAL = 3;
public final static int CHAR = 1;
public final static int VARCHAR = 12;
public final static int LONGVARCHAR = -1;
public final static int DATE = 91;
public final static int TIME = 92;
public final static int TIMESTAMP = 93;
public final static int BINARY = -2;
public final static int VARBINARY = -3;
public final static int LONGVARBINARY = -4;
public final static int NULL = 0;
public final static int OTHER = 1111;
public final static int JAVA_OBJECT = 2000;
public final static int DISTINCT = 2001;
public final static int STRUCT = 2002;
public final static int ARRAY = 2003;
public final static int BLOB = 2004;
public final static int CLOB = 2005;
public final static int REF = 2006;
public final static int DATALINK = 70;
public final static int BOOLEAN = 16;
// ------------------------- JDBC 4.0 -----------------------------------
public final static int ROWID = -8;
public static final int NCHAR = -15;
public static final int NVARCHAR = -9;
public static final int LONGNVARCHAR = -16;
public static final int NCLOB = 2011;
public static final int SQLXML = 2009;
}
其中argTypes里面设定了args参数数组里面每个对象的sql类型。最终spring设置参数的方法如下：
private static void setValue(PreparedStatement ps, int paramIndex, int sqlType, String typeName,
Integer scale, Object inValue) throws SQLException {
if (inValue instanceof SqlTypeva lue) {
((SqlTypeva lue) inValue).setTypeva lue(ps, paramIndex, sqlType, typeName);
}
else if (inValue instanceof SqlValue) {
((SqlValue) inValue).setValue(ps, paramIndex);
}
else if (sqlType == Types.VARCHAR || sqlType == Types.LONGVARCHAR ||
(sqlType == Types.CLOB && isStringValue(inValue.getClass()))) {
ps.setString(paramIndex, inValue.toString());
}
else if (sqlType == Types.DECIMAL || sqlType == Types.NUMERIC) {
if (inValue instanceof BigDecimal) {
ps.setBigDecimal(paramIndex, (BigDecimal) inValue);
}
else if (scale != null) {
ps.setObject(paramIndex, inValue, sqlType, scale);
}
else {
ps.setObject(paramIndex, inValue, sqlType);
}
}
else if (sqlType == Types.DATE) {
if (