Tomahawk t:inputFileUpload 导致验证错误

Question

我在使用 Tomahawk t:inputFileUpload 组件和 Primefaces 输入组件时遇到问题。

我正在使用这个 Tomahawk 组件，因为 Primefaces 将 "multipart/form-data" 转换为另一个字符集。

当我的表单中有特殊字符（如 ã é ó..）时，p:message 组件正在显示 ***Validation Error : the value is not valid***

这里是测试项目

web.xml

<display-name>TESTE_ANEXO</display-name>
<welcome-file-list>
    <welcome-file>index.xhtml</welcome-file>
</welcome-file-list>

<servlet>
    <servlet-name>Faces Servlet</servlet-name>
    <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>Faces Servlet</servlet-name>
    <url-pattern>*.xhtml</url-pattern>
</servlet-mapping>

<filter>
    <filter-name>MyFacesExtensionsFilter</filter-name>
    <filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
    <init-param>
        <param-name>uploadMaxFileSize</param-name>
        <param-value>20m</param-value>
    </init-param>
</filter>

<filter-mapping>
    <filter-name>MyFacesExtensionsFilter</filter-name>
    <servlet-name>Faces Servlet</servlet-name>
</filter-mapping>

index.xhtml

<h:head>
    <title><h:outputText value="#{msg.welcomeTitle}" /></title>
</h:head>

<body>
<h:form enctype="multipart/form-data" acceptcharset="UTF-8">
    <p:messages autoUpdate="true"/>

    <p:selectOneMenu immediate="true" label="teste" id="teste">
        <f:selectItem itemLabel="ããã" itemValue="ããã" />
    </p:selectOneMenu>

    <t:inputFileUpload id="fileupload" value="#{meuBean.arquivo}" /> 
    <h:commandButton value="Enviar"  action="#{meuBean.enviar}" />
</h:form>

MeuBean.java

@ManagedBean
public class MeuBean {

private UploadedFile arquivo;

public UploadedFile getArquivo() {
    return arquivo;
}

public void setArquivo(UploadedFile arquivo) {
    this.arquivo = arquivo;
}

public String enviar() {
    System.out.println("AA");
    System.out.println("Nome do arquivo enviado: " + arquivo.getName());
    System.out.println("Tipo do arquivo enviado: "
            + arquivo.getContentType());
    System.out.println("Tamanho do arquivo enviado: " + arquivo.getSize());

    return "ok";
}
}

依赖版本

<dependency>
    <groupId>org.apache.myfaces.tomahawk</groupId>
    <artifactId>tomahawk21</artifactId>
    <version>1.1.14</version>
</dependency>

<dependency>
    <groupId>com.sun.faces</groupId>
    <artifactId>jsf-impl</artifactId>
    <version>2.2.5</version>
</dependency>

<dependency>
    <groupId>org.primefaces</groupId>
    <artifactId>primefaces</artifactId>
    <version>5.1</version>
</dependency>

Answer 1

验证错误来自包含 "special characters" 的下拉菜单。这在相关问答的回答中解释得很清楚：Validation Error: Value is not valid。最相关的部分引用如下：

In case you're already using String, make sure that the request character encoding is configured right. If it contains special characters and JSF is configured to render the output as UTF-8 but interpret the input as e.g. ISO-8859-1, then it will fail. See also a.o. Unicode input retrieved via PrimeFaces input components become corrupted.

如果你按逻辑思考，Tomahawk 还是没有解决你的编码问题。去掉它，你不需要它，因为 PrimeFaces 已经提供了与 <p:fileUpload>.

相同的功能

如果按照上述 link 所述配置字符编码过滤器后，您仍然遇到字符编码问题，那么您很可能使用的服务器存在错误或需要对其进行额外配置 multipart/form-data解析器。

根据特定服务器 bug/configuration 是否可管理，您可能需要切换回 Apache Commons FileUpload。它不会暴露此编码问题。您可以在 How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null 中找到安装说明。基本上，您需要添加两个 JAR，安装一个 servlet 过滤器并将上下文参数 primefaces.UPLOADER 设置为 commons.

Tomahawk t:inputFileUpload 导致验证错误

Tomahawk t:inputFileUpload results in validation error

jsf

file-upload

tomahawk

character-encoding

primefaces

另请参阅：