StackOverflow2013

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plurals

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12258787
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2012-09-04T07:37:03.100
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2012-09-04T08:58:19.083
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Body
You have to request <code>doGet</code> service method of servlet from web-browser (client) - <code>http://localhost:8084/DBConn</code> or <code>http://localhost:8084/webapp_context/DBConn</code>. Create a POJO, <pre><code>public class Employee{ private Integer id; private String name; //public constructors and //setter/getter } </code></pre> and change your servlet code, <pre><code>public class DBConn extends HttpServlet{ @Override public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException { Connection connection = null; Statement stmt=null; ResultSet rset=null; List<Employee> dataList = new ArrayList<Employee>(); try { // Load the JDBC driver String driverName = "oracle.jdbc.driver.OracleDriver"; Class.forName(driverName); // Create a connection to the database String serverName = "localhost"; String portNumber = "1521"; String sid = "xe"; String url = "jdbc:oracle:thin:@" + serverName + ":" + portNumber + ":" + sid; String username = "hr"; String password = "hr"; connection = DriverManager.getConnection(url, username, password); stmt = connection.createStatement(); rset = stmt.executeQuery("select * from employees"); while (rset.next()) { dataList.add(new Employee(rset.getInt("employee_id"), rset.getString("first_name")); } } catch (ClassNotFoundException e) { // Could not find the database driver } catch (SQLException e) { // Could not connect to the database } finally{ if(rs!=null){ try{ rs.close(); }catch(Exception ex) { /* */ } } if(stmt!=null){ try{ stmt.close(); }catch(Exception ex) { /* */ } } if(connection !=null){ try{ connection.close(); }catch(Exception ex) { /* */ } } } request.setAttribute("data", dataList); String strViewPage = "index.jsp"; RequestDispatcher dispatcher = request.getRequestDispatcher(strViewPage); if (dispatcher != null) { dispatcher.forward(request, response); } } } </code></pre> and markup in <code>index.jsp</code>, <pre><code><%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> <c:forEach var="employee" items="${data}"> ${employee.id} ${employee.name} </c:forEach> </code></pre> NOTE: Never create Types(Classes) in default package. You must have to specify the package name for POJO and Servlet sub-class.
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1. POjava jsp display data from database
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Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.