Question

在struts 2.3中，覆盖我们在下面使用的TextProvider

在struts.xml中设置bean：

<bean type="com.opensymphony.xwork2.TextProvider" name="DefaultTextProvider" class="util.CustomTextProvider" scope="default" />

并制作CustomTextProvider

public class CustomTextProvider extends DefaultTextProvider{

public String getText(String key, String defaultValue, List<?> args) {
        String text = super.getText(key, defaultValue, args);
        //Do something with the text
        //and return it
    }

 //other getText methods can be override too
}

这似乎不适用于Struts 2.15.2。

当我提出一些断点时，我的方法都没有被调用，而且我的bean似乎没有注册。

我认为StrutsLocalizedTextProvider可能是要覆盖的那个。但似乎我无法定义一个扩展它的bean。我收到这个错误：

Unable to load configuration. - bean - file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/WEB-INF/classes/struts.xml:12:156
    at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:66)
    at org.apache.struts2.dispatcher.Dispatcher.getContainer(Dispatcher.java:960)
    at org.apache.struts2.dispatcher.Dispatcher.init_PreloadConfiguration(Dispatcher.java:466)
    at org.apache.struts2.dispatcher.Dispatcher.init(Dispatcher.java:499)
    at org.apache.struts2.dispatcher.InitOperations.initDispatcher(InitOperations.java:75)
    at org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter.init(StrutsPrepareAndExecuteFilter.java:63)
    at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:285)
    at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:266)
    at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:108)
    at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4590)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5233)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:748)
Caused by: Unable to load bean: type:com.opensymphony.xwork2.LocalizedTextProvider class:utils.CustomLocalizedTextProvider - bean - file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/WEB-INF/classes/struts.xml:12:156
    at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.register(XmlConfigurationProvider.java:271)
    at org.apache.struts2.config.StrutsXmlConfigurationProvider.register(StrutsXmlConfigurationProvider.java:98)
    at com.opensymphony.xwork2.config.impl.DefaultConfiguration.reloadContainer(DefaultConfiguration.java:164)
    at com.opensymphony.xwork2.config.ConfigurationManager.getConfiguration(ConfigurationManager.java:63)
    ... 17 more
Caused by: Bean type interface com.opensymphony.xwork2.LocalizedTextProvider with the name struts has already been loaded by [unknown location] - bean - file:/E:/workspace/.metadata/.plugins/org.eclipse.wst.server.core/WEB-INF/classes/struts.xml:12:156

请告诉我如何处理它？！

Answer 1

引起：Bean类型接口com.opensymphony.xwork2.LocalizedTextProvider，名称为struts已经加载

你不应该加载具有相同接口的bean两次。如果你想获得容器加载的bean的实例，你应该使用DI。由于DI没有记录并且Struts不支持，我不建议您使用它。

如果您需要自定义文字提供者，可以按should point to a certificate bundle答案中的说明创建自己的文字提供者。

您可以创建自己的文本提供程序并将其注册 <constant name="struts.xworkTextProvider" value="util.CustomTextProvider"/>：

class LoadingSlip(models.Model):
    _name = 'loading.slip'
    _description = 'loading information'
    partner_id = fields.Char("Customer Name")
    order_date = fields.Date("Order Date")
    expiration_date = fields.Date("Expiration Date")
    # order_line = fields.One2many('sale.order.line', 'order_id', string="Order Lines")
    product_line = fields.One2many('loading.product.line', 'loading_product', string="Loading Products")

class LoadingProduct(models.Model):
    _name = 'loading.product.line'
    _description = "Loading Product Informations"
    products_id = fields.Many2one('product.product', string='Product',
        ondelete='restrict', index=True)
    quantity = fields.Float(string='Quantity', default=1)
    loading_product = fields.Many2one('loading.slip', string="Loading Reference", ondelete='cascade', index='True')

Answer 2

首先，您需要定义自定义工厂：

<constant name="struts.xworkTextProvider" value="DefaultTextProvider" />
<bean type="com.opensymphony.xwork2.TextProvider" name="DefaultTextProvider" class="utils.CustomTextProvider" scope="default" />

然后在您的工厂中加载CustomTextProvider课程：

public class CustomStrutsTextProviderFactory extends StrutsTextProviderFactory {

@Override
protected TextProvider getTextProvider(Class clazz) {
    return new CustomTextProvider(clazz, localeProviderFactory.createLocaleProvider(), localizedTextProvider);
}

@Override
protected TextProvider getTextProvider(ResourceBundle bundle) {
    return new CustomTextProvider(bundle, localeProviderFactory.createLocaleProvider(), localizedTextProvider);
  }
}

最后：

public class CustomTextProvider extends TextProviderSupport {

public CustomTextProvider(Class<?> clazz, LocaleProvider provider, LocalizedTextProvider localizedTextProvider) {
        super(clazz, provider, localizedTextProvider);
    }

public CustomTextProvider(ResourceBundle bundle, LocaleProvider provider, LocalizedTextProvider localizedTextProvider) {
        super(bundle, provider, localizedTextProvider);
}

public String getText(String key, String defaultValue, List<?> args) {
        String text = super.getText(key, defaultValue, args);
        //Do some thing with text
        //return new customized text;
  }

   //Override other getText if you need

 }

请参阅：https://issues.apache.org/jira/browse/WW-4830

Strust 2.15如何覆盖TextProviderSupport以自定义资源bundel消息

2 个答案: