struts2中action配置非execute方法method跳转失败，甚至进不了action

package com.action;



import java.util.Map;



import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpSession;



import org.apache.struts2.ServletActionContext;



import com.dao.PatientinfoDAO;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;

import com.vo.PatientinfoDTO;



public class MyLoginAction02 extends ActionSupport {

	private String Pname;

	private String Ppassword;

	private String psex;



	public String getPsex() {

		return psex;

	}



	public void setPsex(String psex) {

		this.psex = psex;

	}



	static{ //用execute会执行，用method="changePsex"就不执行！！很烦恼 找不出问题

		   System.out.println("进来了！");

		}

	public String execute() throws Exception {

		System.out.print(psex);//用execute会执行，用method="changePsex"就不执行！！很烦恼 找不出问题

		PatientinfoDAO dao = new PatientinfoDAO();

		String role = null;

		PatientinfoDTO rs = new PatientinfoDTO();

		rs = dao.findUserByAccountAndPassword(Pname, Ppassword);

		if (rs != null) {

			role = "patient";

			Map session = ActionContext.getContext().getSession();

			session.put("user", rs);

			// System.out.print(patientLogin.get("name"));

			session.put("role", role);

			return "success01";

		}



		return "input";



	}



	public String changePsex() throws Exception {

		System.out.print(psex);

		PatientinfoDAO dao = new PatientinfoDAO();

		int r = dao.updateSex(Pname, psex);

		if (r > 0)

			return SUCCESS;

		else

			return INPUT;

	}



	public String getPname() {

		return Pname;

	}



	public void setPname(String pname) {

		Pname = pname;

	}



	public String getPpassword() {

		return Ppassword;

	}



	public void setPpassword(String ppassword) {

		Ppassword = ppassword;

	}



}