Struts2之获取ServletAPI

1.通过ServletActionContext类

//获取request对象
HttpServletRequest request = ServletActionContext.getRequest();
//保存值到application中
ServletActionContext.getActionContext(request).setApplication(new HashMap<>());

2.通过ServletRequestAware 接口

    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);

    }

    }