JDBC提示出错问题修改表中数据

Question

一张表 表名mission
number describe 两个字段

以下是修改用到的两处代码
public boolean upd(String sql, String parameters[])
throws ClassNotFoundException, SQLException {
boolean flag=false;
Class.forName("com.mysql.jdbc.Driver");
Connection conn = DriverManager.getConnection(
"jdbc:mysql://localhost:3306/users", "root", "070902");
PreparedStatement ps = null;
ps = conn.prepareStatement(sql);
for(int i=0;i<parameters.length;i++){
ps.setString(i+1, parameters[i]);
}
int rs = ps.executeUpdate();
if(rs==1) flag=true;
return flag;
}

    //修改任务
public boolean updMission(Mission mission){
    boolean b=false;
    String sql="update mission set describe=?  where id=?";
    String parameters[] ={mission.getDescribe(),mission.getNumber()+""};
    SqlHelper sp = new SqlHelper();
    try {
         b =sp.upd(sql, parameters);

    } catch (ClassNotFoundException | SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }finally{

    }
    return b;
}

mission是个对象 构造应该没问题  编译通过 运行报错
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'describe='w'  where number='10'' at line 1
我在另外一个地方一模一样的方法 可以修改成功  就是where 后面的条件 
求大神帮忙看下了 刚学 找错好久了

Answer 1

http://bbs.csdn.net/topics/390514653