Retrieve a record base on last Auto Increment primary key and view in input field

Question

I want to retrieve a record from a table in database base on last primary key insert(the ID), this how my program looks like, but when i run it'll return to blank page. Is the query wrong??

<div style="background:steelblue;">
    <form action=saveRecord.jsp> <<----will save the record to other table
        <%
        Class.forName("com.mysql.jdbc.Driver").newInstance();
        Connection conn =     DriverManager.getConnection("jdbc:mysql://localhost:3306/dssps", "root", "admin");
        String query = "select Did,ShipName,Origin,Port1 from decsfinal where   Did=LAST_INSERT_ID()";
        Statement st = conn.createStatement();
        ResultSet rs = st.executeQuery(query);
        if(rs.next()){
        %>

        <label>ID</label>
        <input  name="Did" value="<%=rs.getInt("Did")%>">
        </br>

        <label>Ship Name</label>
        <input  name="ShipName" value="<%=rs.getString("ShipName")%>">
        </br>

        <label>Origin Port</label>
        <input  name="Origin" value="<%=rs.getString("Origin")%>">
        </br>

        <label>Destination Port</label>
        <input  name="Port1" value="<%=rs.getString("Port1")%>">
        </br>

        // here the submit button and close database

Answer 1

You can use this :

<div style="background:steelblue;">
    <form action=saveRecord.jsp>
        <%
            try {
                Class.forName("com.mysql.jdbc.Driver").newInstance();
                Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/dssps", "root", "admin");
                String query = "select Did, ShipName, Origin, Port1 from decsfinal where Did = LAST_INSERT_ID()";
                Statement st = conn.createStatement();
                ResultSet rs = st.executeQuery(query);
                if (rs.next()) {
                    out.print(rs.getInt(1));
                    out.print(rs.getString(2));
                    out.print(rs.getString(3));
                    out.print(rs.getString(4));
                    //Or you can use
//                            out.print(rs.getInt("Did"));
//                            out.print(rs.getString("ShipName"));
//                            out.print(rs.getString("Origin"));
//                            out.print(rs.getString("Port1"));
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        %>
    </form>
</div>

Answer 2

last_insert_id() method is retrieving last_id+1 means if you have last id as 9 it is retrieving 10 and comparing it in the where clause, hence there is no id which is equal to 10 your query is retrieving null, try this query(it worked for me).

select Did,ShipName,Origin,Port1 from decsfinal where Did = Last_insert_id()-1;

OR if your primary key(Did) is set to auto increment you can use this query to get result you want

select max(Did) , ShipName ,Origin,Port1 from decsfinal;