Spring mvc 如何获取HttpSession session=request.getSession（true）；值外部请求映射方法

这工作做得很好

@RequestMapping(value = "/users/emailfrom2")
    public String displayLogin3(Model model, HttpServletRequest request, HttpServletResponse response) {

    HttpSession session = request.getSession(true);
    String gsSessionID = (String) session.getAttribute("GSSessionID");

    System.out.println("Session ===>>>> " + gsSessionID);
    logger.debug("displayLogin3()");

    return "users/test1";
}

但我想要这样，像一个全球价值

public class UserController  {
String gsSessionID = (String) session.getAttribute("GSSessionID");  
@RequestMapping(value = "/users/emailfrom2")
public String displayLogin3(Model model, HttpServletRequest request, HttpServletResponse response) {

            System.out.println("Session ===>>>> " + gsSessionID);
            logger.debug("displayLogin3()");
            return "users/test1";
        }

 @RequestMapping(value = "/users/emailfrom5")
    public String displayLogin5(Model model, HttpServletRequest request, HttpServletResponse response) {

     String sessionId = getSessionProperty(request, "GSSessionID");

        System.out.println("Session ===>>>> " + sessionId);
        logger.debug("displayLogin3()");

        return "users/test1";
    }

}

我只想写字符串sessionId=getSessionProperty（请求“GSSessionID”）；在控制器类中只有一次，而不是两次或三次以上。

---

任何帮助都将不胜感激。

请使用以下内容：

public class UserController extends AbstractController {

   @RequestMapping(value = "/users/emailfrom2")
    public String displayLogin3(Model model, HttpServletRequest request, HttpServletResponse response) {

        String sessionId = getSessionID(request)

        System.out.println("Session ===>>>> " + sessionId);
        logger.debug("displayLogin3()");

        return "users/test1";
    }
}


public abstract class AbstractController {
    public String getSessionID(HttpServletRequest request){
        HttpSession session = request.getSession(true);
        return (String) session.getAttribute("GSSessionID");
    }
}

更新：

如果如您所说，您可能需要会话中的不同值，则应修改此方法：

公共抽象类抽象控制器{

    protected String gSSessionID;
    protected String gSPresentDate;


    @PreProcess
    public void loadSessionAttributes(@SessionAttribute(name="GSSessionID") String gSSessionID,
                                      @SessionAttribute(name="GSPresentDate") String gSPresentDate){
        this.gSSessionID = gSSessionID;
        this.gSPresentDate = gSPresentDate;
        //Some other session attributes
    }
}

public class UserController extends AbstractController {

    @RequestMapping(value = "/users/emailfrom2")
    public String displayLogin3(Model model, HttpServletRequest request, HttpServletResponse response) {

        System.out.println("Session ===>>>> " + gSSessionID);
        logger.debug("displayLogin3()");

        return "users/test1";
    }
}

---

你不能这样做，但可以在AbstractController中创建一个通用方法，该方法接收请求并返回该值，因此你可以在多个控制器中使用。请给出任何示例link@cralfaro请给我任何链接的例子please@Himel有了这个解决方案，您可以向AbstractController中添加在几个方面需要使用的所有方法l控制器如果我有多个session*String gsPresentDate=（String）session.getAttribute（“gsPresentDate”）；*String gsSessionID=（String）session.getAttribute（“gsSessionID”）；String*gsInternalCardID=（String）session.getAttribute（“gsLogInToDay”）；*String gsLogInToDay=（String）session.getAttribute（“gsLogInToDay”）；如果我的控制器类中有100个方法，那么我必须将其转换为字符串100次，然后传入方法参数解决方案是什么？使用我添加的示例，使用一个新参数，您可以从session@cralfroString sessionId在RequestMapping中需要100次。我该怎么做这是我的重点。我必须在每个RequestMapping中写入字符串sessionId=getSessionProperty（请求，“GSSessionID”）；我只想在类似全局值中写入一次，这样我就可以在每个RequestMapping方法中获得它。可能吗？

    protected String gSSessionID;
    protected String gSPresentDate;


    @PreProcess
    public void loadSessionAttributes(@SessionAttribute(name="GSSessionID") String gSSessionID,
                                      @SessionAttribute(name="GSPresentDate") String gSPresentDate){
        this.gSSessionID = gSSessionID;
        this.gSPresentDate = gSPresentDate;
        //Some other session attributes
    }
}

public class UserController extends AbstractController {

    @RequestMapping(value = "/users/emailfrom2")
    public String displayLogin3(Model model, HttpServletRequest request, HttpServletResponse response) {

        System.out.println("Session ===>>>> " + gSSessionID);
        logger.debug("displayLogin3()");

        return "users/test1";
    }
}