JSP---A servlet to handle multiple request operations

1. Servlet

public void Excute (HttpServletRequest request, httpservletresponse response)
Throws Exception {
Request.setcharacterencoding ("Utf-8");
String operate = Request.getparameter ("Operate");
if (operate = = NULL | | operate.equals ("")) {
operate = "List";
}
if (Operate.equals ("Save")) {
Save (request, response);
} else if (Operate.equals ("edit")) {
Edit (request, response);
} else if (Operate.equals ("Update")) {
Update (request, response);
} else if (operate.equals ("delete")) {
Delete (request, response);
}
}

public void list (HttpServletRequest request, httpservletresponse response) {//todo}

public void Save (HttpServletRequest request, httpservletresponse response) {//todo}

public void edit (HttpServletRequest request, httpservletresponse response) {//todo}

public void Update (HttpServletRequest request, httpservletresponse response) {//todo}

public void Delete (HttpServletRequest request, httpservletresponse response) {//todo}

2.jsp

<form name= "Formadd" action= "Pet.do?operate=save" method= "post" >//increase

<a href= "pet.do?operate=edit&id=${pet.pet_id}" > Modify </a>//change
<a href= "pet.do?operate=delete&id=${pet.pet_id}" > Remove </a>//delete

<form name= "Formedit" action= "Pet.do?operate=update" method= "POST" >//update