操作Oracle自定义类型

有几个需要注意的地方：
1.程序类路径中需要添加nls_charset12.jar
2.如果用9i的数据库，不能用10g下的nls_charset12.jar，必须用对应的版本
3.下文中与数据库字段对应的ADDRESSTYPE必须大写[map.put("ADDRESSTYPE", Class.forName("AddressType"));]
4.查看数据库字符集
select * from nls_database_parameters
NLS_CHARACTERSET是数据库字符集，NLS_NCHAR_CHARACTERSET是国家字符集
ORACLE中有两大类字符型数据，VARCHAR2是按照数据库字符集来存储数据。而NVARCHAR2是按照国家字符集存储数据的。
5.参考资料
http://www.java2s.com/CN/Code/Java/Database-SQL-JDBC/InsertcustomtypetoOracle.htm
http://www.java2s.com/Code/JavaAPI/java.sql/ResultSetgetObjectStringcolumnLabel.htm

CREATE OR REPLACE TYPE addressType AS OBJECT(
country VARCHAR2(20),
province VARCHAR2(20),
city VARCHAR2(20),
street VARCHAR2(80),
zipcode VARCHAR2(10)
);

create table contactInfo (
name VARCHAR2(20),
telephone VARCHAR2(20),
mobile VARCHAR2(15),
fax VARCHAR2(20),
email VARCHAR2(25),
contactAddr addressType,
otherWords VARCHAR2(30)
);
insert into contactInfo(contactAddr) values(addressType('china', 'beijing', 'beijing', 'beijing', '10000'));

AddressType

public class AddressType implements SQLData {
	public String country;
	public String province;
	public String city;
	public String street;
	public String zipcode;
	private String sqlUdt;

	public void writeSQL(SQLOutput stream) throws SQLException {
		stream.writeString(country);
		stream.writeString(province);
		stream.writeString(city);
		stream.writeString(street);
		stream.writeString(zipcode);
	}

	public String getSQLTypeName() throws SQLException {
		return sqlUdt;
	}

	public void readSQL(SQLInput stream, String typeName) throws SQLException {
		sqlUdt = typeName;
		country = stream.readString();
		province = stream.readString();
		city = stream.readString();
		street = stream.readString();
		zipcode = stream.readString();
	}
}

测试代码：

//查看字符集是否支持，如果不支持，为CharacterSetUnknown，如果支持为CharacterSet12Byte
//int oracleId = CharacterSet.ZHS16GBK_CHARSET;
//CharacterSet dbCharset = CharacterSet.make(oracleId);
Class.forName("oracle.jdbc.driver.OracleDriver");
String urlName = "jdbc:oracle:thin:@127.0.0.1:1521:test";
con = DriverManager.getConnection(urlName, "username", "password");
stmt = con.createStatement();
//Oracle自定义类型与Java类型之间的映射
Map map = con.getTypeMap();
map.put("ADDRESSTYPE", Class.forName("AddressType"));
con.setTypeMap(map);
rs = stmt.executeQuery("select * from contactInfo");
while(rs.next()) {
    System.out.println(rs.getString("telephone"));
    AddressType add = (AddressType)rs.getObject("contactAddr");
    if(add != null) {
	System.out.println("country:" + add.country);
    }
}