Programming for beginners: getCharacterEncoding() : Get the Character encoding used

public String getCharacterEncoding()

Returns the name of the character encoding used in the body of this request. This method returns null if the request does not specify a character encoding.

<!DOCTYPE html>
<html>
    <head>
        <title>User Registration</title>
    </head>
    <body>
        <noscript>Java Script functionality disabled, Please enable it</noscript>
        <form action="/servlet/Register" method="post">
            <table id="registrationTable">
                <caption>Please fill the details to Register</caption>
                <tr>
                    <td>Mail Id:<span class="required1"><sup>*</sup></span></td>
                    <td><input type="text" name="mailID" id="mailID" required="required" /></td>
                </tr>
                <tr>
                    <td>Password:<span class="required1"><sup>*</sup></span></td>
                    <td><input type="password" name="passwd" id="passwd" required="required" /></td>
                </tr>
                <tr>
                    <td>Confirm Password<span class="required1"><sup>*</sup></span></td>
                    <td><input type="password" name="confPasswd" id="confPasswd" required="required" /></td>
                </tr>
                <tr>
                    <td><input type="submit" value="Register" id="register" /></td>
                    <td><input type="reset" value="Clear Data" /></td>             
                </tr>
            </table>
        </form>
    </body>
</html>

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebFilter;

@WebFilter(filterName = "FilterEncodind", urlPatterns = {"/Register"})
public class FilterEncoding implements Filter {
    @Override
   public void init(FilterConfig filterConfig) throws ServletException{
       
   }
   
   @Override
    public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException{
        req.setCharacterEncoding("ISO-8859-8");
        chain.doFilter(req, res);
    }
    
   @Override
    public void destroy(){
        
    }
}

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(urlPatterns = {"/Register"})
public class Register extends HttpServlet {
    @Override
    public void doPost(HttpServletRequest req, HttpServletResponse res)throws IOException{
        String encoding = req.getCharacterEncoding();
        try(PrintWriter out = res.getWriter()){
            out.println("<html><head><title>Get Encoding format</title><body><h1>");
            out.println("Encoding used is " + encoding);
            out.println("</h1></body></html>");
        }
        
    }
}

Output

Fill and submit the registration form, then you can see the output like below.

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Programming for beginners

Monday 11 August 2014

getCharacterEncoding() : Get the Character encoding used

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