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out.println("<html>");. out.println("<head><title>BasicServlet</title></head>");. out.println("<body>");. Prints the REQUEST_METHOD sent by the client. out.println("Your request method was ". out.println("</body></html>");. out.close();. The HTML Required to Invoke the Servlet. The first is to just reference the servlet by name in the URL. The following URL will execute the servlet on my local server:. Using this method defaults the request method to GET, which will invoke...
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Create the Bean. Serialize the Bean to a Persistent Store storeBean(simpleBean);. Get the Bean from the Persistent Store SimpleJavaBean newBean = getBean();. If you build and run this application, the output will look similar to the following:. In the following sections, we are going to look at the standard actions used to reference JavaBeans and an example that uses these...
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Figure 4.5: The Type 3 JDBC-Net driver.. They do this by converting JDBC commands directly into the database engine's native protocol. Figure 4.6 diagrams the communications of a Type 4 driver.. Figure 4.6: The Type 4 native-protocol JDBC driver.. In this section, we are going to discuss how to install and set up a Type 1 driver, make a connection...
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Iterate over the ResultSet while ( rs.next. System.err.println("Title Name = ". rs.getString("title_name"));. System.err.println("Title Rating = ". rs.getString("rating"));. System.err.println("Title Price = ". rs.getString("price"));. System.err.println("Title Quantity = ". rs.getString("quantity". Close the ResultSet rs.close();. System.in.read();. System.err.println(ioe.getMessage());. System.err.println(sqle.getMessage());. System.err.println(cnfe.getMessage());. System.err.println(e.getMessage());. Close the connection no matter what con.close();. at that point you need to close the ResultSet object. Title Name = The Adventures of Buckaroo...
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As you look through the generated listing, examine how this is implemented in the _jspService() method.. There is really nothing special about the JSP presented in Listing 4.5. begin out.write("<HTML>\r\n<HEAD>\r\n<TITLE>JSP JDBC ". "Example 1</TITLE>\r\n</HEAD>\r\n\r\n<BODY>\r\n\r\n");. import the java.sql package -->\r\n");. out.write("\r\n\r\n");. Make a connection to the ODBC datasource con = DriverManager.getConnection(. out.write("\r\n<. Add an HTML -->\r\n". "<TABLE BORDER gt;\r\n <TR>\r\n". "<TH>Title</TH><TH>Rating</TH>....
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directory and open the test-error.jsp page in your browser. Figure 6.1: Output of the testerror.jsp example.. To see how this error is handled in the actual compiled code, let's take a look at the _jspService() method generated from the testerror.jsp example. pageContext = _jspxFactory.getPageContext(this, request, response, "errorpage.jsp", true, 8192, true);. application = pageContext.getServletContext();. config = pageContext.getServletConfig();. session = pageContext.getSession();. out...
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<title>Welcome to JSP</title>. out.println("Welcome : ". You can see that the SubclassJSP provides empty jspInit() and jspDestroy() life-cycle methods, which satisfy the JSP subclass requirements. Now compile the PureJSPBase servlet to the <SERVER_ROOT>/purejsp/WEB-INF/classes directory and move the SubclassJSP.jsp to the <SERVER_ROOT>/purejsp/ directory. http://localhost:8080/purejsp/SubclassJSP.jsp?user=Bob&company=Sams You should see a page similar to Figure 8.1.. Figure 8.1: The output of SubclassJSP.jsp.. In Chapter...
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The page object is just as it sounds, a reference to the current instance of the JSP. You can find a complete description of the. errorPage mechanism, including use of the implicit exception object in Chapter 6, "Handling JSP Errors.". You should now have a clear understanding of the implicit objects that are available to you and what they represent.....
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pageContext.forward("MCPHome.jsp". _jspx_qfStr);. begin [file="C:\\UseForward.jsp";from=(24,10);to=(26,4)]. It simply decides which JSP to forward to, creates the query string, and calls the pageContext.forward() method with the name of the JSP and the query string.. <jsp:plugin>. The <jsp:plugin>. action enables a JSP author to generate HTML that contains the appropriate client- browser–dependent constructs, for example, OBJECT or EMBED, that will result in the download...
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You can see that the only difference between these two JSPs is the values of the HTML <title>. To see how a session bean works, copy both of these JSPs to the <SERVER_ROOT>/purejsp/. directory and open your browser to the following URL:. http://yourserver:8080/purejsp/SessionBean1.jsp You should see an image similar to Figure 11.3.. http://yourserver:8080/purejsp/SessionBean2.jsp. This is because the Counter bean is...
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Add a new item to the shopping cart.. itemId - the unique key associated with the item * desc - a text description of the item. quantity - number of this item to insert into the * shopping cart. if (items.containsKey(itemId)). String[] tmpItem = (String[])items.get(itemId);. items.put(itemId, item);. Remove an item from the shopping cart.. items.remove(itemId);. Change the quantity of a...
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If n+1 connections are requested, it must create a new connection and add it to the pool.. Initialize the pool. Add the Connection to the pool.. throw new Exception(e.getMessage());. Adds the PooledConnection to the pool. If the pool is null, create a new vector. Add the PooledConnection Object to the vector pool.addElement(value);. pool.size. (PooledConnection)pool.elementAt(x);. Check for correct Connection if (...
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get the title_name, which is a String out.println("<tr>\n<td>". "</td>");. get the rating. out.println("<td align=\"center\">". get the price. get the quantity. "</td>\n</tr>");. out.println("</table></center>");. out.println(ioe.getMessage());. out.println(sqle.getMessage());. out.println(cnfe.getMessage());. out.println(e.getMessage());. release the connection no matter what pool.releaseConnection(con);. The first section is included in the following code snippet:. This section of code tries to find an instance of a ConnectionPool with application scope and an...
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"<td align=\"center\">". "</td></tr>");. out.println("<tr><td align=\"left\">DESCRIPTION</td>". out.println("<tr><td align=\"left\">PRICE</td>". System.out.println("<tr><td align=\"left\">QUANTITY</td>". To see this JSP run, you will need to copy the SAXHandler class file to the <SERVER_ROOT>/purejsp/WEB- INF/classes/ directory, and the item.xml and the XMLExample.jsp to the. http://yourserver:8080/purejsp/XMLExample.jsp You should see a page similar to Figure 15.2.. Figure 15.2: Output from XMLExample.jsp.. you learn how you can use JSPs and servlets...
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Before we get started, you probably want to know what you will need in order to use the JavaMail API, and where to get it. The JavaMail API can be downloaded from. The archive you will get contains the JavaMail API jar file, all of the javadoc files, the JavaMail Specification in PDF format, the guide for service providers in...
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public void releasePageContext(PageContext pc). public abstract class JspWriter extends java.io.Writer. java.io.BufferedWriter and java.io.PrintWriter classes. However, JspWriter differs from these other classes in that it throws a java.io.IOException from the print methods where. public void newLine() throws java.io.IOException. java.io.IOException. print(boolean b) Method. public void print(boolean b) throws java.io.IOException. The method always throws a java.io.IOException exception. print(char c) Method. public void print(char...
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java.lang.String. java.io.IOException. java.lang.IllegalStateException. java.lang.IllegalArgumentException. popBody() has no parameters and throws no exceptions.. pushBody() has no parameters and throws no exceptions.. This method is typically called from JspFactory.releasePageContext. removeAttribute(java.lang.String name) Method. public abstract void removeAttribute(java.lang.String name). The removeAttribute(java.lang.String name) method removes the object reference associated with the specified name. It returns no value and throws no exceptions.. removeAttribute(java.lang.String name, int scope)...
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This method returns the value of an attribute as a java.lang.String. getAttributeString() throws no exceptions.. java.lang.String. public java.lang.String getId(). This method returns the value of the id attribute or null. getID() has no parameters and throws no exceptions.. public void setAttribute(java.lang.String name, java.lang.Object value). setAttribute() returns no value and throws no exceptions.. java.lang.Object. public abstract class TagExtraInfo extends java.lang.Object. TagExtraInfo()...
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public java.lang.String getServletName(). getServletName() has no parameters and throws no exceptions.. java.lang.String. public java.lang.String getInitParameter(java.lang.String). getInitParameter() throws no exceptions.. public java.util.Enumeration getInitParameterNames(). getInitParameterNames() takes no parameters and throws no exceptions.. java.util.Enumeration. public ServletContext getContext(java.lang.String uripath). getContext() throws no exceptions.. public java.lang.String getInitParameter(java.lang.String name). getInitParameterNames() has no parameters and throws no exceptions.. getMajorVersion() has no parameters and throws no exceptions.. getMinorVersion()...
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It provides default life cycle methods and default implementations of the ServletConfig's methods.. GenericServlet() has no parameters, returns no value, and throws no exceptions.. public void destroy(). destroy() has no parameters, returns no value, and throws no exceptions.. public java.lang.String getInitParameter(. java.lang.String name). The getInitParameter() method returns a String containing the value of the initialization parameter keyed by the passed...