Methods for submitting data to a Tomcat server using post methods _java

In my previous article, I described using get to submit data to a Tomcat server, which would introduce the use of post to submit data to a server, which is exactly the same as creating a Web project with a get way, in just a few different places. I'll just introduce the different places, the first difference is that the submissions are different, so modify the code in the Loginservlet.java

Package com.fyt.org; 
Import java.io.IOException; 
Import Java.io.OutputStream; 
Import Java.io.PrintWriter; 
Import javax.servlet.ServletException; 
Import Javax.servlet.http.HttpServlet; 
Import Javax.servlet.http.HttpServletRequest; 
Import Javax.servlet.http.HttpServletResponse; 
public class Loginservlet extends HttpServlet {public loginservlet () {super (); 
public void Destroy () {Super.destroy (); ///Use Get method to submit data to server public void doget (HttpServletRequest request, httpservletresponse response) throws Servletexception , IOException {}///submit data to server using POST method public void DoPost (HttpServletRequest request, httpservletresponse response) thro 
WS Servletexception, IOException {//Get user name sent from browser String username = request.getparameter ("username"); 
Gets the password sent over from the client String password = request.getparameter ("password"); Convert a username to a byte array using ISO8859-1 encoding//And then use Utf-8 to convert a byte array to a string username = new String (Username.getbytes ("iso8859-1"), "Utf-8") 
; Print the username and password in the console System.out.println ("UserName= "+ username); 
System.out.println ("password=" + password); 
Get an output stream outputstream OS = Response.getoutputstream (); If the username and password are entered correctly if (username) && "123". Equals (password)) {//Send the word Fu Fa to the browser os.write ("login succeeded". GetBytes ( 
"Utf-8")); 
else {//Send the string to the browser os.write ("Login Failed". GetBytes ("Utf-8")); } 
} 
}

The second place to be modified is index.jsp, which modifies the code in index.jsp to the following code

<%@ page language= "java" import= "java.util.*" pageencoding= "Utf-8"%> <% String Path = Request.getcontextpath () 
; 
String basepath = request.getscheme () + "://" +request.getservername () + ":" +request.getserverport () +path+ "/"; %> <! DOCTYPE HTML PUBLIC "-//w3c//dtd HTML 4.01 transitional//en" >  

Deploy the project to a Tomcat server after the modification is complete, and you can deploy it as a reference to my blog. Submit data to Tomcat server using GET method
When the deployment is complete, enter http://192.168.1.102:8080/WebProject/index.jsp in the browser, and the interface shown in the browser below indicates that the project was successfully deployed to the browser

Enter a small log in the username, enter 123 in the password, the login succeeds when the login is displayed in the browser, because I set the correct username in the server is a small log, the correct password is 123

Logon failure is displayed when an entry error occurs in a username or password

about using post to submit data to the Tomcat server method to introduce so many people, I hope to help you!