PostgreSQL与Java JDBC数据类型对照

序号	数据库类型	Java类型	JDBC索引	JDBC类型
1	varchar	java.lang.String	12	VARCHAR
2	char	java.lang.String	1	CHAR
3	cidr	java.lang.Object	1111	OTHER
4	inet	java.lang.Object	1111	OTHER
5	macaddr	java.lang.Object	1111	OTHER
6	text	java.lang.String	12	VARCHAR
7	int8	java.lang.Long	-5	BIGINT
8	bytea	byte	-2	BINARY
9	box	java.lang.Object	1111	OTHER
10	circle	java.lang.Object	1111	OTHER
11	float8	java.lang.Double	8	DOUBLE
12	int4	java.lang.Integer	4	INTEGER
13	interval	java.lang.Object	1111	OTHER
14	line	java.lang.Object	1111	OTHER
15	lseg	java.lang.Object	1111	OTHER
16	money	java.lang.Double	8	DOUBLE
17	numeric	java.math.BigDecimal	2	NUMERIC
18	path	java.lang.Object	1111	OTHER
19	point	java.lang.Object	1111	OTHER
20	polygon	java.lang.Object	1111	OTHER
21	float4	java.lang.Float	7	REAL
22	int2	java.lang.Integer	5	SMALLINT
23	time	java.sql.Time	92	TIME
24	timestamp	java.sql.Timestamp	93	TIMESTAMP
25	bit	java.lang.Boolean	-7	BIT
26	varbit	java.lang.Object	1111	OTHER
27	bool	java.lang.Boolean	-7	BIT

JdbcType

public enum JdbcType {
  /*
   * This is added to enable basic support for the
   * ARRAY data type - but a custom type handler is still required
   */
  ARRAY(Types.ARRAY),
  BIT(Types.BIT),
  TINYINT(Types.TINYINT),
  SMALLINT(Types.SMALLINT),
  INTEGER(Types.INTEGER),
  BIGINT(Types.BIGINT),
  FLOAT(Types.FLOAT),
  REAL(Types.REAL),
  DOUBLE(Types.DOUBLE),
  NUMERIC(Types.NUMERIC),
  DECIMAL(Types.DECIMAL),
  CHAR(Types.CHAR),
  VARCHAR(Types.VARCHAR),
  LONGVARCHAR(Types.LONGVARCHAR),
  DATE(Types.DATE),
  TIME(Types.TIME),
  TIMESTAMP(Types.TIMESTAMP),
  BINARY(Types.BINARY),
  VARBINARY(Types.VARBINARY),
  LONGVARBINARY(Types.LONGVARBINARY),
  NULL(Types.NULL),
  OTHER(Types.OTHER),
  BLOB(Types.BLOB),
  CLOB(Types.CLOB),
  BOOLEAN(Types.BOOLEAN),
  CURSOR(-10), // Oracle
  UNDEFINED(Integer.MIN_VALUE + 1000),
  NVARCHAR(Types.NVARCHAR), // JDK6
  NCHAR(Types.NCHAR), // JDK6
  NCLOB(Types.NCLOB), // JDK6
  STRUCT(Types.STRUCT),
  JAVA_OBJECT(Types.JAVA_OBJECT),
  DISTINCT(Types.DISTINCT),
  REF(Types.REF),
  DATALINK(Types.DATALINK),
  ROWID(Types.ROWID), // JDK6
  LONGNVARCHAR(Types.LONGNVARCHAR), // JDK6
  SQLXML(Types.SQLXML), // JDK6
  DATETIMEOFFSET(-155); // SQL Server 2008

  public final int TYPE_CODE;
  private static Map<Integer,JdbcType> codeLookup = new HashMap<Integer,JdbcType>();

  static {
    for (JdbcType type : JdbcType.values()) {
      codeLookup.put(type.TYPE_CODE, type);
    }
  }

  JdbcType(int code) {
    this.TYPE_CODE = code;
  }

  public static JdbcType forCode(int code)  {
    return codeLookup.get(code);
  }

}

Types

/**
 * <P>The class that defines the constants that are used to identify generic
 * SQL types, called JDBC types.
 * <p>
 * This class is never instantiated.
 */
public class Types {

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>BIT</code>.
 */
        public final static int BIT             =  -7;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>TINYINT</code>.
 */
        public final static int TINYINT         =  -6;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>SMALLINT</code>.
 */
        public final static int SMALLINT        =   5;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>INTEGER</code>.
 */
        public final static int INTEGER         =   4;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>BIGINT</code>.
 */
        public final static int BIGINT          =  -5;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>FLOAT</code>.
 */
        public final static int FLOAT           =   6;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>REAL</code>.
 */
        public final static int REAL            =   7;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>DOUBLE</code>.
 */
        public final static int DOUBLE          =   8;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>NUMERIC</code>.
 */
        public final static int NUMERIC         =   2;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>DECIMAL</code>.
 */
        public final static int DECIMAL         =   3;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>CHAR</code>.
 */
        public final static int CHAR            =   1;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>VARCHAR</code>.
 */
        public final static int VARCHAR         =  12;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>LONGVARCHAR</code>.
 */
        public final static int LONGVARCHAR     =  -1;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>DATE</code>.
 */
        public final static int DATE            =  91;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>TIME</code>.
 */
        public final static int TIME            =  92;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>TIMESTAMP</code>.
 */
        public final static int TIMESTAMP       =  93;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>BINARY</code>.
 */
        public final static int BINARY          =  -2;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>VARBINARY</code>.
 */
        public final static int VARBINARY       =  -3;

/**
 * <P>The constant in the Java programming language, sometimes referred
 * to as a type code, that identifies the generic SQL type
 * <code>LONGVARBINARY</code>.
 */
        public final static int LONGVARBINARY   =  -4;

/**
 * <P>The constant in the Java programming language
 * that identifies the generic SQL value
 * <code>NULL</code>.
 */
        public final static int NULL            =   0;

    /**
     * The constant in the Java programming language that indicates
     * that the SQL type is database-specific and
     * gets mapped to a Java object that can be accessed via
     * the methods <code>getObject</code> and <code>setObject</code>.
     */
        public final static int OTHER           = 1111;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type
     * <code>JAVA_OBJECT</code>.
     * @since 1.2
     */
        public final static int JAVA_OBJECT         = 2000;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type
     * <code>DISTINCT</code>.
     * @since 1.2
     */
        public final static int DISTINCT            = 2001;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type
     * <code>STRUCT</code>.
     * @since 1.2
     */
        public final static int STRUCT              = 2002;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type
     * <code>ARRAY</code>.
     * @since 1.2
     */
        public final static int ARRAY               = 2003;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type
     * <code>BLOB</code>.
     * @since 1.2
     */
        public final static int BLOB                = 2004;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type
     * <code>CLOB</code>.
     * @since 1.2
     */
        public final static int CLOB                = 2005;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type
     * <code>REF</code>.
     * @since 1.2
     */
        public final static int REF                 = 2006;

    /**
     * The constant in the Java programming language, somtimes referred to
     * as a type code, that identifies the generic SQL type <code>DATALINK</code>.
     *
     * @since 1.4
     */
    public final static int DATALINK = 70;

    /**
     * The constant in the Java programming language, somtimes referred to
     * as a type code, that identifies the generic SQL type <code>BOOLEAN</code>.
     *
     * @since 1.4
     */
    public final static int BOOLEAN = 16;

    //------------------------- JDBC 4.0 -----------------------------------

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type <code>ROWID</code>
     *
     * @since 1.6
     *
     */
    public final static int ROWID = -8;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type <code>NCHAR</code>
     *
     * @since 1.6
     */
    public static final int NCHAR = -15;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type <code>NVARCHAR</code>.
     *
     * @since 1.6
     */
    public static final int NVARCHAR = -9;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type <code>LONGNVARCHAR</code>.
     *
     * @since 1.6
     */
    public static final int LONGNVARCHAR = -16;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type <code>NCLOB</code>.
     *
     * @since 1.6
     */
    public static final int NCLOB = 2011;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type <code>XML</code>.
     *
     * @since 1.6
     */
    public static final int SQLXML = 2009;

    //--------------------------JDBC 4.2 -----------------------------

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type {@code REF CURSOR}.
     *
     * @since 1.8
     */
    public static final int REF_CURSOR = 2012;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type
     * {@code TIME WITH TIMEZONE}.
     *
     * @since 1.8
     */
    public static final int TIME_WITH_TIMEZONE = 2013;

    /**
     * The constant in the Java programming language, sometimes referred to
     * as a type code, that identifies the generic SQL type
     * {@code TIMESTAMP WITH TIMEZONE}.
     *
     * @since 1.8
     */
    public static final int TIMESTAMP_WITH_TIMEZONE = 2014;

    // Prevent instantiation
    private Types() {}
}