如何从struts2中的参数列表中排除提交操作？ [英] How to exclude the submit action from a list of parameters in struts2?

问题描述

我想从参数列表中排除提交操作。以下是操作类。

I'm trying to exclude a submit action from a parameter list. The following is the action class.

@Namespace("/admin_side")
@ResultPath("/WEB-INF/content")
@InterceptorRefs({
    @InterceptorRef(value="validation", params={"excludeMethods", "test"}),
    @InterceptorRef(value="params", params={"excludeParams", "action:postAction"})})
public final class TestAction extends ActionSupport implements Serializable, ValidationAware
{
    private static final long serialVersionUID = 1L;
    private static final String SUCCESS = "success";

    private String name;

    @Action(value = "test", results = {
    @Result(name="success", location="Test.jsp"),
    @Result(name = "input", location = "Test.jsp")})
    public String test() throws Exception
    {
        System.out.println("name = "+name);
        return SUCCESS;
    }

    @Action(value = "postAction", results = {
    @Result(name="success", location="Test.jsp"),
    @Result(name = "input", location = "Test.jsp")})
    public String postAction()
    {
        System.out.println("Post invoked");
        System.out.println("name = "+name);
        return SUCCESS;
    }

    @RequiredStringValidator(type= ValidatorType.FIELD, message = "The name is required.")
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public void validate()
    {
        if(!hasErrors()&&name.length()<2)
        {
            addFieldError("name", "The name must compose of 2 letters.");
        }
    }
}

Test.jsp 页面：

<s:form namespace="/admin_side" action="test" validate="true">
    <s:textfield id="name" name="name" label="Name"/>
    <s:submit id="btnSubmit" name="btnSubmit" value="Submit" action="postAction"/>
</s:form>

< s：submit> 将如下所示。

<input type="submit" id="btnSubmit" name="action:postAction" value="Submit"/>

---

@InterceptorRef 上面的类

@InterceptorRef(value="params", params={"excludeParams", "action:postAction"})

似乎无效。 postAction（）从未被调用导致发出以下警告。

doesn't seem to work. The method postAction() is never invoked causing the following warning to be issued.

Dec 24，2013 10:49:16 PM
com.opensymphony.xwork2.interceptor.ParametersInterceptor warn
警告：参数[action：postAction]位于
模式的excludeParams列表中！

Dec 24, 2013 10:49:16 PM com.opensymphony.xwork2.interceptor.ParametersInterceptor warn WARNING: Parameter [action:postAction] is on the excludeParams list of patterns!

---

在 struts.properties file，我现在有以下属性。

---

In the struts.properties file, I have the following properties until now.

struts.enable.DynamicMethodInvocation=false
struts.devMode=false
struts.ui.theme=simple

struts.convention.package.locators=actions
struts.convention.action.suffix=Controller
struts.convention.action.mapAllMatches=true

struts.convention.result.path=/WEB-INF/content //No need. It is the default.
struts.mapper.action.prefix.enabled=true

我使用Struts 2.3 .16。

I'm using Struts 2.3.16.

为什么不排除提交按钮的参数？单击< s：submit> 时如何调用 postAction（）方法？

Why doesn't it exclude the submit button's parameter? How to invoke the postAction() method, when <s:submit> is clicked?

推荐答案

为什么不排除提交按钮的参数？

Why doesn't it exclude the submit button's parameter?

因为此参数位于 params 拦截器的 excludeParams 默认情况下引用您的操作的 defaultStack 。

Because this parameter is in the excludeParams list of the params interceptor in the defaultStack which your action is referenced by default.

< s：submit> 是否被点击？

在这个问题中，你问如何调用一个方法第一个操作和方法使用命名空间和操作名称映射到指定的URL的区别。所以，要调用一个方法而不是一个动作，你应该打开DMI。 Struts，因为2.3.16关闭了这个选项。在 struts.xml中使用以下配置常量：

In this question you ask how to invoke a method (not an action). The difference between the action and method the first is mapped to a specified URL using a namespace and action name. So, to invoke a method other than an action you should turn DMI on. Struts, since 2.3.16 turned off this option. The following configuration constant to use in struts.xml:

<constant name="struts.enable.DynamicMethodInvocation" value="true"/>

并使用方法属性， code> action 属性。

and use a method attribute instead of action attribute.

<s:form namespace="/admin_side" action="test">
  <s:submit value="Submit" method="postAction"/>
</s:form> 

/ 573032>此回答。

as I already told in this answer.

如果您不想使用DMI，则可以选择启用 ：参数前缀

If you don't want to use DMI, then you have an option to enable action: prefix to the parameter

<constant name="struts.mapper.action.prefix.enabled" value="true"/>

并使用映射到方法的操作 postAction

and use an action mapped to the method postAction

<s:form namespace="/admin_side" action="test">
  <s:submit value="Submit" action="postAction"/>
</s:form> 

并使用不带 params.excludeParams 的注释。

@InterceptorRef(value="defaultStack" params={"validation.excludeMethods", "test"})

警告： action：postAction 参数位于exclude list still持续，但它只出现在 struts.devMode = true 。你不应该担心它，因为它警告通过的 excludeParams 列表中的所有参数。要关闭 devMode ，您应该设置

The warning that action:postAction parameter is on exclude list still persist, but it appears only if the struts.devMode=true. You shouldn't worry about it because it warns all parameters from the excludeParams list that passed through. To turn off devMode you should set

<constant name="struts.devMode" value="false" />

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