使用mybatis的generator自己主动生成代码,可是oracle数据库中number(6,2)总是自己主动转成BigDecimal。我想要转成的是float类型
这样就写了一个类型转换器,须要继承JavaTypeResolver接口
然后在mybaties配置文件generatorConfig.xml中类型转换配置位置加入上就可以
<javaTypeResolver type="com.generator.MyJavaTypeResolver">
<property name="forceBigDecimals" value="false" /> <!-- 类型解析器 -->
</javaTypeResolver>
类型转换器MyJavaTypeResolver主要代码
public FullyQualifiedJavaType calculateJavaType(
IntrospectedColumn introspectedColumn) {
// TODO Auto-generated method stub
FullyQualifiedJavaType answer;
JdbcTypeInformation jdbcTypeInformation = typeMap
.get(introspectedColumn.getJdbcType()); if (jdbcTypeInformation == null) {
switch (introspectedColumn.getJdbcType()) {
case Types.DECIMAL:
case Types.NUMERIC:
if(introspectedColumn.getScale() > 0)
{//假设包括小数点则转换成float
answer = new FullyQualifiedJavaType(Float.class.getName());
}else{
if ( introspectedColumn.getLength() > 18
|| forceBigDecimals) {
answer = new FullyQualifiedJavaType(BigDecimal.class
.getName());
} else if (introspectedColumn.getLength() > 9) {
answer = new FullyQualifiedJavaType(Long.class.getName());
} else if (introspectedColumn.getLength() > 4) {
answer = new FullyQualifiedJavaType(Integer.class.getName());
} else {
answer = new FullyQualifiedJavaType(Short.class.getName());
}
}
break; default:
answer = null;
break;
}
} else {
answer = jdbcTypeInformation.getFullyQualifiedJavaType();
} return answer;
}