Create a dynamic web project

For that go to

FileànewàDynamic web project

Fill project details and say next .next and finish and make sure generate web.xml is checked

Now time to create a servlet

For that right click on create project “SeverletJSPExapmle” ànewèservlet and give entries

Now in next we need to edit the URL mapping to make it more convenient because we are going to use this to access our servlet so I made them all small letter

Now say next and next and check the option . Here we removed the dopost and doget and selected services. As they do same job

And say finish

Now eclipse has created ServletExample.java file for us in source directory and added following entry in web.xml (WebContentàWEB-INFàweb.xml)

<display-name>ServletExample</display-name>

<servlet-name>ServletExample</servlet-name>

<servlet-class>com.example.tutorial.ServletExample</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>ServletExample</servlet-name>

<url-pattern>/servletexample</url-pattern>

</servlet-mapping>

Now we will do some coding to interact our servlet with web browser

protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// it will get object to write string in browser

PrintWriter out = response.getWriter();

out.println("hello Java!!!");

}

Now run this code by doing right click in ServletExample.Java file and select run AsàRun On Server

You will see your string in URL

http://localhost:8081/ServerletsJSPExample/servletexample

You might need to restart once that tomcat server

Now time to some more advance programming by capturing request from JSP (xhtml) pages and sending response back

To create jsp page browse to webcontent folder and select newà Jsp page

Now give JSP page name say index.jsp and click next and in next screen select “New JSP file (xhtml)” as JSP template and say Finish

Now index.jsp page get created. To deploy the jsp page you need to right click on page and say new->run as-> on application sever

Here we will create a jsp page having a form with 2 input field firstname and lastname with a submit button

We will fill jsp form and capture that request in serverlet and display in web browser

We already created index.jsp page now time to add some code

<body>

<tr>

<td>First Name: </td> <td><input type="text" name="firstname"/></td>

</tr>

<tr>

</tr>

<tr>

</tr>

</table>

</form>

Here <form> to is to create a form

action= <give your servlet name (Not serverlet class name)> this is the place which setup binding between servlet and jsp

method = post means user will post below information as request from browse

<table> tag use to give good look and provide formatting

<tr> tag is to separate rows in table

<td> tag is for column

<td colspan="2"> means we are combining two column into one

Earlier we added very simple out put string in our ServletExample.java class here we are going to add some more code to capture JSP from request and display them in browser

protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// Get servlet object which will display any string in browser

PrintWriter out = response.getWriter();

// Capture request from JSP page where input field name ="firstname"

String fname = request.getParameter("firstname");

// Capture request from JSP page where input field name ="lastname"

String lname = request.getParameter("lastname");

// Display string in web browser

out.println(fname+" "+lname);

//out.println("hello Java!!!");

}

Now you can access form by URL: http://localhost:8081/ServerletsJSPExample/index.jsp

As JSP page should not be directly accessible to user so we will use RequestDispatcher to hide our jsp page.

protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

//it will hide the jsp page link in URL and just show servlet URL it will use MVC model

//here we have add if condition so that jsp form will show if any input is null

if(request.getParameter("firstname")==null || request.getParameter("lastname")==null ){

getServletContext().getRequestDispatcher("/index.jsp").forward(request, response);

}

// Capture request from JSP page where input field name ="firstname"

String fname = request.getParameter("firstname");

// Capture request from JSP page where input field name ="lastname"

String lname = request.getParameter("lastname");

// Display string in web browser

out.println(fname+" "+lname);

}

Now you can see index.jsp page from URL:

http://localhost:8081/ServerletsJSPExample/ instead of complete jsp page URL http://localhost:8081/ServerletsJSPExample/index.jsp which we used earlier

Now we will create one more jsp page output.jsp which will capture input entered in earlier created page index.jsp . This page will display the output in web. Again we will hind both JSP pages from user using RequestDispatcher . Actually it will provide MVC model where web page will be display as per input . Like if any input first name or last name will be null then always index.jsp page will populate and once both entries will be there then output.jsp page will display first name and last name

protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

//it will hide the jsp page link in URL and just show servlet URL it will use MVC model

//here we have add if condition so that jsp form will show if any input is null

//we will create one more jsp page to show the output called output.jsp

if(request.getParameter("firstname")==null || request.getParameter("lastname")==null ){

getServletContext().getRequestDispatcher("/index.jsp").forward(request, response);

}

// Capture request from JSP page where input field name ="firstname"

String fname = request.getParameter("firstname");

// Capture request from JSP page where input field name ="lastname"

String lname = request.getParameter("lastname");

// Display string in web browser

out.println(fname+" "+lname);

//code to display output in output.jsp page

//Here we are setting attribute in request which is output.jsp page is fetching

request.setAttribute("firstname", fname);

request.setAttribute("lastname", lname);

//Get output.jsp page using request dispatcher

getServletContext().getRequestDispatcher("/output.jsp").forward(request, response);

}

Output.jsp:

<title>JSP Output</title>

</head>

<body>

<h1>Your First and Last name is:</h1>

String ffname= (String)request.getAttribute("firstname");

String llname = (String)request.getAttribute("lastname");

out.print(ffname+" "+llname);

</body>

<h1> tag we use for heading as it is in normal html

<% %> this tag use to write java scriptlet

Here you will notice we are getting both string from request.getAttribute which is set by servlet code. So servlet java code is working as mediocre which pop up and took input from index.jsp after that set value to request object which is accessed by output.jsp and use in Java script and again servlet java code invoke the output.jsp

Now if you will say run as server from ServletExample.java then first index.jsp page will display but you will notice URL is :

http://localhost:8081/ServerletsJSPExample/servletexample instead of http://localhost:8081/ServerletsJSPExample/index.jsp

You will give first name and last name and again output.jsp page URL will be : http://localhost:8081/ServerletsJSPExample/servletexample instead of http://localhost:8081/ServerletsJSPExample/output.jsp

It is because of request dispatcher you can see MVC model here.

The other way is capturing request in servlet by directly passing the value through URL like:

http://localhost:8081/ServerletsJSPExample/servletexample?firstname=saurabh&lastname=shrivastava

Complete working code:

protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// it will get object to write string in browser

PrintWriter out = response.getWriter();

if(request.getParameter("firstname") == null || request.getParameter("lastname")==null)

{

getServletContext().getRequestDispatcher("/index.jsp").forward(request, response);

return;

}

String fname = request.getParameter("firstname");

String lname = request.getParameter("lastname");

request.setAttribute("firstname", fname);

request.setAttribute( "lastname",lname);

getServletContext().getRequestDispatcher("/output.jsp").forward(request, response);

}

We can also use variable define in java scriptlet in HTML tag to do more formatting and in our example we will print first name and lastname in HTML table in output.jsp using below code in body

<body>

<h1>Your First and Last name is:</h1>

String ffname= (String)request.getAttribute("firstname");

String llname = (String)request.getAttribute("lastname");

<table>

<tr>

<td>First Name:</td><td><%=ffname %></td>

</tr>

<tr>

</tr>

</table>

</body>

Now the output will look like

Group Items on Their Folder Name Inside a SharePoint Library

As you probably will know, folders could not be used in views to group documents. You could only group documents on their metadata.

Group Documents

A possible solution could be to add a new metadata field to the content type and manually add the folder name as the metadata value. It is very easy to add and requires no custom development, but it requires an extra manual step from the document creator.

This manual step can also be automated by a SharePoint 2010 Document library functionality called Column default value settings. It can be found on the document library settings page under the General settings section.

The Column default value settings enable you to define a default value for a metadata column per folder.

Default column value

Approach

Go to the document library settings;
Create a new column called: Folder name (Single line of text);
Click on Column default value settings under the General settings section;

Culumn default value settings
On the left side you will see your folders, and on the right site the columns for which you could give up a default value;

Folders, columns
Click on the folder name, and after that on the column name;

Default column value
Click Use this default value, and fill in the folder value and click OK;
Repeat this process for each folder.