Question

Struts2拦截器如何获得Action的返回信息

Action和页面之间通过Json信息进行交流，我现在写了个拦截器，需要获得Action返回给页面的xml文件的信息，不知道怎么获取，现在只知道用
result = ai.invoke();//执行被拦截action 取得Action里面的直接的return 信息，但是我的Struts配置文件是这样配置的：
<result name="success" type="stream">
<param name="contentType">text/xml</param>
<param name="inputName">is</param>
</result>
也就是在返回Success的同时还返回了is这个参数。我现在想获得is怎么获取，请高手指点。

Answer 1

package action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts2.ServletActionContext;

import VO.User;
import Factory.*;

public class Login {
public String username;
public String password;
public String checkCode;
public String info;

public String getInfo() {
return info;
}

public void setInfo(String info) {
this.info = info;
}

public String getCheckCode() {
return checkCode;
}

public void setCheckCode(String checkCode) {
this.checkCode = checkCode;
}

User user = new User();

public String sessionError(){
info="系统认为您是非法用户，请重新登录！！！";
return "init";
}

public String execute() {
HttpSession session = ServletActionContext.getRequest().getSession();
user.setName(getUsername());
user.setPassword(getPassword());
System.out.println("验证码:" + checkCode);
System.out.println("UserName:" + username);

System.out.println("Password:" + password);
boolean falsh = false;
falsh = loginNew.getNoteServicInstance().checked(user);

if ("".equals(checkCode) || checkCode == null) {
return "erro";
} else {
if (!checkCode.equals(session.getAttribute("randCheckCode"))) {
return "erro1";
} else {
if (falsh) {
session.setAttribute("user", username);
return "success";
} else {
return "erro2";
}

}
}

}

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;
}

}

Answer 2

看源代码！多研究研究JAVA的源代码。