struts2 actionerrors，fielderrors作为json返回并在表单上显示错误-AJAX，Liferay Portal，Portlet [英] struts2 actionerrors, fielderrors return as json and display errors on the form - AJAX, Liferay Portal, Portlet

问题描述

我想知道是否有人可以对以下内容提出任何想法.

I am wondering if anybody can throw any ideas on the following.

使用validate()方法获得一个Action类，当验证失败时，返回带有actionErrors和fieldErrors的输入JSP.

Got an Action class with validate() method returning input JSP with actionErrors, fieldErrors when validations fail.

我只想获取验证错误(JSON数据?)并在现有页面上显示错误并突出显示字段，而不是用新的响应JSP刷新整个JSP.

JQuery用于客户端，Struts2作为MVC框架，Liferay作为Portal服务器.

JQuery is used on client side, Struts2 as MVC framework, Liferay as Portal server.

以下是我尝试过的代码

public void validate() { 
    setActionErrors(validateData(this));
}

<result-types>
        <result-type name="json" class="org.apache.struts2.json.JSONResult"/>
</result-types>

<interceptors>
    <interceptor name="json" class="org.apache.struts2.json.JSONInterceptor"/>
</interceptors>             


<action name="saveDataAsync" class="MyActionClass" method="addDataAsync">
    <result name="success">/jsp/addDataAsync.jsp</result>
    <result name="input" type="json">
    </result>
</action>

<portlet:actionURL name="saveData" var="saveDataActionURL">
   <portlet:param name="struts.portlet.action" value="/saveDataAsync"/>
</portlet:actionURL>

jQuery.ajax({
            type: 'POST',
            url: "<%=saveDataActionURL%>", 
            data: jQuery("#form").serialize(),
            dataType: 'json',
            success: function(data) {

                alert("data" + data);
            }
});

在执行validate方法之后.即使有错误添加到错误列表并通过setActionErrors()方法设置，该流程仍在执行操作类的默认方法.当拦截器和调用方法被调用时，我可以看到 resultcode:"input"和结果:"jsonresult" .

After execution of validate method. the flow is executing default method of action class, even when there are errors added to errorlist and set through setActionErrors() method. I could see resultcode : as "input" and result: as "jsonresult" when the interceptors and invoke methods get called.

我真的很感谢您在此问题上的帮助.

I really appreciate any help on this problem.

推荐答案

您可以将INPUT结果配置为json类型的操作，并使用includeProperties参数指定生成的JSON.

You can configure INPUT result to your action of type json and use includeProperties parameter to specify generated JSON.

<result name="input" type="json">
  <param name="ignoreHierarchy">false</param>
  <param name="includeProperties">^actionErrors\[\d+\],^fieldErrors\['\w+'\]\[\d+\]</param>
</result>

动作类应该扩展ActionSupport，因此这些属性将可用.

The action class should extend ActionSupport, so these properties will be available.

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