Mybatis解决空字符串保存入Mysql数字字段的类型转换问题

package com.newpage.common.util;

import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

import org.apache.ibatis.type.JdbcType;
import org.apache.ibatis.type.TypeHandler;

import com.newpage.common.base.NewFunc;

public class NewpageTypeHandler implements TypeHandler {
public Object getResult(ResultSet rs, String columnName) throws SQLException {
return rs.getString(columnName);
}

public Object getResult(CallableStatement cs, int columnIndex)
throws SQLException {
return cs.getString(columnIndex);
}

public void setParameter(PreparedStatement ps, int i, Object parameter,
JdbcType jdbcType) throws SQLException {
String param = NewFunc.getInstance().ObjectToStr(parameter);
if(!NewFunc.getInstance().ChkEmpty(param)) {
param = null;
}
ps.setString(i, param);
}
}

<typeHandlers>
<typeHandler handler="com.newpage.common.util.NewpageTypeHandler" javaType="String"/>
</typeHandlers>