public void addstu(Student student) throws Exception{
String sqlString="insert into student values("+student.getId()+","
+ "‘"+student.getName()+"‘,‘"+student.getSname()+"‘,"+student.getAge()+")";
JdbcTools.update(sqlString);
对于整型直接用引号跟加号组合
而对于字符型需要在两边加上单引号
原文：http://www.cnblogs.com/afterhours/p/7209172.html