直接上代码：
java代码：
public class HelloAction implements Action {
@Override
public String execute() throws Exception {
Map<String, Object> requestScope = (Map<String, Object>) ActionContext.getContext().get("request");
Map<String, Object> sessionScope = ActionContext.getContext().getSession();
Map<String, Object> applicationScope = ActionContext.getContext().getApplication();
Map<String, Object> params = ActionContext.getContext().getParameters();
requestScope.put("name", "request");
sessionScope.put("name", "session");
applicationScope.put("name", "application");
String[] strs = (String[]) params.get("name");
System.out.println(Arrays.toString(strs));
return SUCCESS;
}
}
jsp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>
</head>
<body>
${requestScope.name}<br/>
${sessionScope.name}<br/>
${applicationScope.name}<br/>
</body>
</html>
访问的时候追加name参数，后台就会打印参数值