百度地图Android Sdk的Api里面,没有现成的直接获取两个坐标点之间距离的方法,但是,在jsapi里面,有直接计算距离的方法. class Point: pass def max(a,b): if a>b: return a return b def min(a,c): if a>c: return c return a def lw(a, b, c): # b != n && (a = Math.max(a, b)); # c != n && (a =
step1:构造连接Class.forName("com.mysql.jdbc.Driver"); Connection con = DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/db","root","123"); step2:构造语句String sql = "select username,password from t_user where