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首先是创建一个枚举类（登录类型）
public enum LoginType {
PASSWORD(0), WECHAT(1), ALIPAY(2);
private int value;
private LoginType(int value){
this.value = value;
}
public boolean isHitRequired(LoginType loginType) {
return (this.value - loginType.value)>=0;
}
@Override
public String toString() {
return Integer.toString(value);
}
public Integer getValue() {
return this.value;
}
public static LoginType getClaim(int value) {
switch(value) {
case 0:
return PASSWORD;
case 1:
return WECHAT;
default:
return ALIPAY;
}
}
}
然后写一个转换帮助类
@MappedJdbcTypes(JdbcType.INTEGER)
@MappedTypes(LoginType.class)
public class LoginTypeHandler extends BaseTypeHandler<LoginType>{
@Override
public void setNonNullParameter(PreparedStatement ps, int i, LoginType parameter, JdbcType jdbcType)
throws SQLException {
ps.setInt(i, parameter.getValue());
}
@Override
public LoginType getNullableResult(ResultSet rs, String columnName) throws SQLException {
return LoginType.getClaim(rs.getInt(columnName));
}
@Override
public LoginType getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
return LoginType.getClaim(rs.getInt(columnIndex));
}
@Override
public LoginType getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
return LoginType.getClaim(cs.getInt(columnIndex));
}
}
最后就是转换拉（在mapper文件里写）
<result property="loginType" column="login_Type" typeHandler="方法类的路径"/>
<select></select> //和之前一样
<insert>
insert into LOGIN values (#{loginType,jdbcType=integer,typeHandler=方法类的路径})
</insert>
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转播
