问题在链接上Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection(URL,"root","a3809667");
PreparedStatement prep = conn.prepareStatement("insert into emp(name,salary,age)values(?,?,?)");//这里不能加分号
System.out.println(name);
prep.setString(1, name);
System.out.println(salary);
prep.setDouble(2, Double.parseDouble(salary));
System.out.println(age);
prep.setInt(3,Integer.parseInt(age));
prep.executeUpdate();
pw.println("添加成功");这是try里面的代码