1.导入jar包
struts核心包：
json需要的包：
2.配置web.xml
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
3.编写页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<script src="http://ajax.aspnetcdn.com/ajax/jQuery/jquery-1.8.0.js"></script>
<script>
$(function(){
$("#button").click(function(){
var data = {
username: $("#username").val(),
userpwd: $("#userpwd").val()
}
$.post("login.action",data,function(msg){
alert(msg);
},'json');
})
})
</script>
</head>
<body>
用户姓名：<input type="text" id ="username"><br><br>
用户密码：<input type="text" id= "userpwd"><br><br>
<input type="button" value="提交" id="button">
</body>
</html>
4.配置struts.xml和Action类
原生实现方法
public class UserAction extends ActionSupport implements ServletRequestAware {
private String username;
private String userpwd;
private HttpServletRequest request;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getUserpwd() {
return userpwd;
}
public void setUserpwd(String userpwd) {
this.userpwd = userpwd;
}
@Override
public void setServletRequest(HttpServletRequest arg0) {
this.request = arg0;
}
public void executeAjax() throws IOException {
// 处理Ajax请求
String name = request.getParameter("username");
String pwd = request.getParameter("userpwd");
HttpServletResponse response = ServletActionContext.getResponse();
response.getWriter().print("hello"+username+"hello"+userpwd);
}
}
使用插件
<struts>
<package name="hello" namespace="/" extends="struts-default,json-default">
<action name="login" class="cn.jiangwenwen.action.UserAction" method="executeAjax">
<result type="json">
<param name="root">result</param>
</result>
</action>
</package>
</struts>
public class UserAction extends ActionSupport{
private String username;
private String userpwd;
private String result;
public String executeAjax() {
if("admin".equals(username)) {
result = "主人，欢迎回家！";
}else {
result = "警告，非法入侵！";
}
return SUCCESS;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getUserpwd() {
return userpwd;
}
public void setUserpwd(String userpwd) {
this.userpwd = userpwd;
}
public String getResult() {
return result;
}
public void setResult(String result) {
this.result = result;
}
}