Question

struts2 ActionSupport 中的validate方法怎样验证（注册功能）两次输入的密码是否相同？

注册action

public class RegisterAction extends ActionSupport{
LoginBean register;

public LoginBean getRegister() {
return register;
}
public void setRegister(LoginBean register) {
this.register = register;
}
public String execute(){
LoginDao lg = new LoginDao();
boolean b=lg.isRegister(register);
if(b){
return SUCCESS;
}
else{
this.addFieldError("username", "该用户名已被注册过");
return INPUT;
}
}
public void validate(){
if(register.getUsername()==null||register.getUsername().length()==0){
this.addFieldError("username","用户名不能为空");
}
if(register.getPassword()==null||register.getPassword().length()<6){
this.addFieldError("password","密码不能为空，长度不能小于6");
}

bean
package bean;

public class LoginBean {
String username;
String password;
String repassword;
int role;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getRepassword() {
return repassword;
}
public void setRepassword(String repassword) {
this.repassword = repassword;
}
public int getRole() {
return role;
}
public void setRole(int role) {
this.role = role;
}
}

validate中还要写一个方法验证两次输入密码是否相同。求指点

Answer 1

首先，struts2进行权限验证是用拦截器做的
一个简单的登录拦截器示例如下：
package com.zdf.interceptor;

import com.opensymphony.xwork2.Action;
import com.opensymphony.xwork2.ActionInvocation;
import com.opensymphony.xwork2.interceptor.AbstractInterceptor;
import com.zdf.entity.Admin;

@SuppressWarnings("serial")
public class LoginInterceptor extends AbstractInterceptor{

@Override
public String intercept(ActionInvocation invocation) throws Exception {
// TODO Auto-generated method stub
Admin admin = (Admin)invocation.getInvocationContext().getSession().get("ADMIN");
if(admin!=null){
return invocation.invoke();
}else{
return Action.LOGIN;
}
}

}