java - struts 形式的多 Action

Question

我想在 struts 表单中添加 3 个按钮。我的代码是:

@Action("/admin/product/insert")
public String insert() throws Exception {
    if(upload.hasFile()){
        model.setImage(upload.getFileFileName());
        upload.saveTo("../images/customers/");
    }
    else{
        model.setImage("product.png");
    }
    XHibernate.save(model);
    return "new";
}

@Action("/admin/product/update")
public String update() throws Exception {
    if(upload.hasFile()){
        model.setImage(upload.getFileFileName());
        upload.saveTo("../images/customers/");
    }
    System.out.println("update");
    XHibernate.update(model);
    return "input";
}

@Action("/admin/product/delete")
public String delete() throws Exception {
    XHibernate.delete(model);
    return "new";
}

在jsp中:

<s:form enctype="multipart/form-data" theme="simple" role="form">

    <div class="form-group col-md-4">
        <label for="id">Product Id</label>
        <s:textfield id="productId" name="id" cssClass="form-control" />
    </div>

    <div class="form-group col-md-4">
        <label for="name">Product Name</label>
        <s:textfield name="name" cssClass="form-control" />
    </div>

    <div class="form-group col-md-4">
        <label for="unitPrice">Unit Price</label>
        <s:textfield name="unitPrice" cssClass="form-control" />
    </div>

    <div class="form-group col-md-4">
        <label for="unitBrief">Unit Description</label>
        <s:textfield name="unitBrief" cssClass="form-control" />
    </div>

    <div class="form-group col-md-4">
        <label for="discount">Discount</label>
        <s:textfield name="discount" cssClass="form-control" />
    </div>

    <div class="form-group col-md-4">
        <label for="quantity">Quantity</label>
        <s:textfield name="quantity" cssClass="form-control" />
    </div>

    <div class="form-group col-md-4">
        <label for="productDate">Product Date</label>
        <s:textfield name="productDate" cssClass="form-control" />
    </div>

    <div class="form-group col-md-4">
        <label for="supplier.id">Supplier</label>
        <s:select name="supplier.id" list="suppliers" listKey="id"
            listValue="name" cssClass="form-control" />
    </div>

    <div class="form-group col-md-4">
        <label for="category.id">Category</label>
        <s:select name="category.id" list="categories" listKey="id"
            listValue="name" cssClass="form-control" />
    </div>

    <div class="form-group col-md-4">
        <label>Features</label>
        <div>
            <label><s:checkbox name="available" /> Available</label> <label><s:checkbox
                    name="special" /> Special</label> <label><s:checkbox
                    name="latest" /> latest</label>
        </div>
    </div>

    <div class="form-group col-md-4">
        <label for="image">Image</label> <input id="image" type="file"
            name="upload.file">
        <s:hidden name="image" />
    </div>

    <div class="form-group col-md-12">
        <label for="description">Description</label>
        <s:textarea id="index_description" name="description" rows="30"
            cssClass="form-control" />
    </div>

    <div class="col-md-12">
        <s:submit value="Thêm mới" action="admin/product/insert"
            cssClass="btn btn-default" />
        <s:submit value="Cập nhật" action="admin/product/update"
            cssClass="btn btn-default" />
        <s:submit value="Xóa" action="admin/product/delete" cssClass="btn btn-default" />
        <a href="product/index" class="btn btn-default">Nhập lại</a>
    </div>
</s:form>

问题是它无法准确调用操作。

我总是收到错误消息:“没有为命名空间/admin/product 和操作名称 admin/product/update 映射的操作。”。

我必须将它分成 3 种形式吗？或者有什么方法可以像我的代码一样在 1 种形式中使用 3 个按钮进行 3 个操作？任何帮助都会很棒。

启用开发模式时更新了日志记录:

ognl.MethodFailedException: Method "setDiscount" failed for object eshop.entity.Product@48e4d3df [java.lang.NoSuchMethodException: setDiscount([Ljava.lang.String;)]
at ognl.OgnlRuntime.callAppropriateMethod(OgnlRuntime.java:823)
at ognl.OgnlRuntime.setMethodValue(OgnlRuntime.java:964)
at ognl.ObjectPropertyAccessor.setPossibleProperty(ObjectPropertyAccessor.java:75)
at ognl.ObjectPropertyAccessor.setProperty(ObjectPropertyAccessor.java:131)
at com.opensymphony.xwork2.ognl.accessor.ObjectAccessor.setProperty(ObjectAccessor.java:28)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:1656)
at com.opensymphony.xwork2.ognl.accessor.CompoundRootAccessor.setProperty(CompoundRootAccessor.java:50)
at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:1656)
at ognl.ASTProperty.setValueBody(ASTProperty.java:101)
at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:177)
at ognl.SimpleNode.setValue(SimpleNode.java:246)
at ognl.Ognl.setValue(Ognl.java:476)
at com.opensymphony.xwork2.ognl.OgnlUtil.setValue(OgnlUtil.java:192)
at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:155)
at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:143)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.setParameters(ParametersInterceptor.java:273)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:187)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:148)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:93)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:306)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:128)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(ProfilingActivationInterceptor.java:104)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:148)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:128)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:236)
at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:468)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:76)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)

Answer 1

要解决您当前的问题，您应该添加

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

在struts.xml中，默认为false，将把最后一个斜杠之前的所有部分作为命名空间，而不是 Action 名。顺便说一句，这有副作用:

Action Names With Slashes

If your action names have slashes in them (for example,
<action name="admin/home" class="tutorial.Admin"/>) you need to specifically allow slashes in your action names via a constant in the struts.xml file by specifying

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

See JIRA Issue WW-1383 for discussion as there are side effects to setting this property to true.

要以正确的方式解决问题，您需要正确使用命名空间:

Action

@Namespace("/admin/product")
public class YourAction extends ActionSupport

    @Action("insert")
    public String insert() throws Exception {
        /* .... */
    }

    @Action("update")
    public String update() throws Exception {
        /* .... */
    }

    @Action("delete")
    public String delete() throws Exception {
        /* .... */
    }

JSP

<s:submit value="Thêm mới" action="insert" cssClass="btn btn-default" />
<s:submit value="Cập nhật" action="update" cssClass="btn btn-default" />
<s:submit value="Xóa"      action="delete" cssClass="btn btn-default" />

您还应该重构 Actions 和 JSP 的包结构以遵循命名空间结构。

P.S:请记住设置 Action 前缀已启用，如 this answer 中所述如果您使用的 Struts2 版本高于 2.3.15.2:

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

---

编辑

如果namespace您用来显示 JSP 的操作的不与调用的操作(在本例中为 /admin/product )相同，您需要在 <s:form> 中指定它标签:

<s:form namespace = "/admin/product" 
          enctype = "multipart/form-data" 
            theme = "simple" 
             role = "form">

并且(如果您使用的是高于 2.3.15.2 的 Struts2 版本)，请在 struts.xml 中设置以下属性:

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

因为它已经被默认禁用due to security reason .