Primefaces FileUpload 在 Spring Boot 中不起作用 [英] Primefaces FileUpload not working in Spring Boot
问题描述
我正在运行我的 JSF 项目，使用 Spring Boot 启动它并利用整个 Spring 环境.配置为:Mojarra 2.2.8 + Primefaces 5.1 + Spring Boot 1.1.9.这就是我的 POM.xml 文件的样子:
I'm running my JSF project launching it with Spring Boot and taking advantage of the whole Spring environment. The configuration is: Mojarra 2.2.8 + Primefaces 5.1 + Spring Boot 1.1.9. That's how my POM.xml file looks like:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mycompany</groupId>
<artifactId>project</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.1.9.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>${jsf.version}</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>${jsf.version}</version>
</dependency>
<dependency>
<groupId>org.primefaces</groupId>
<artifactId>primefaces</artifactId>
<version>5.1</version>
</dependency>
<dependency>
<groupId>org.primefaces.themes</groupId>
<artifactId>all-themes</artifactId>
<version>1.0.10</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
</dependency>
<dependency>
<groupId>javax.el</groupId>
<artifactId>el-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>el-impl</artifactId>
<version>2.2</version>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<start-class>com.tesicnor.workplace.monitor.Application</start-class>
<java.version>1.7</java.version>
<tomcat.version>7.0.57</tomcat.version>
<jsf.version>2.2.8</jsf.version>
</properties>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
正如上面所指定的，我将项目配置为在 tomcat 7.0.57(兼容 Servlet 3.0)启动器中运行.所有 JSF 功能都正常工作，但问题是我无法使 Primefaces p:fileUpload 组件工作，无论是基本版本还是高级版本.文件上传侦听器不会被调用，也不会抛出错误.
As it's specified above, I'm configuring the project to run in a tomcat 7.0.57 (Servlet 3.0 compatible) launcher. All the JSF functions are properly working, but the problem is I can't get the Primefaces p:fileUpload component work, neither the basic or the advanced versions. The file upload listener doesn't get invoked and no error thrown.
这是我的 bean 的代码:
That's my bean's code:
@ManagedBean
@javax.faces.bean.ViewScoped
public class Bean {
public void handleFileUpload(FileUploadEvent event) {
FacesMessage message = new FacesMessage("Succesful", event.getFile()
.getFileName() + " is uploaded.");
FacesContext.getCurrentInstance().addMessage(null, message);
System.out.println("Uploaded!");
}
}
这就是我的 xhtml 文件在模板下的样子:
And that's how my xhtml file looks like, under a template:
<ui:composition template="/WEB-INF/template.xhtml"
xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:p="http://primefaces.org/ui">
<ui:define name="content">
<h:form>
<p:fileUpload fileUploadListener="#{bean.handleFileUpload}" />
</h:form>
</ui:define>
</ui:composition>
代码没什么特别的，肯定是服务器配置问题.当我放下文件并点击upload 时，FacesServlet 被击中.所以请求被执行并且没有显示javascript错误.但是当我对 InvokeApplicationPhase 类执行调试时，我的方法应该被调用，我发现没有要处理的事件.所以 FileUploadEvent 没有被附加到循环中.
Nothing special about the code at all, it must be a server configuration issue. When I drop the file and click on upload, the FacesServlet gets hit. So the request is performed and no javascript errors shown. But when I perform a debugging into the InvokeApplicationPhase class, where my method should be invoked, I find no events to be processed. So the FileUploadEvent is not being attached to the cycle.
此外，这是使用 Tomcat 7 和该 JSF 版本正确执行文件上传的另一个项目的调试堆栈:
Furthermore, that's the debugging stack of another project that properly performs the file upload with Tomcat 7 and that JSF version:
这里正在调用 NativeFileUploadDecoder.但是，在我的 Spring boot 项目中并没有发生这种情况，并且没有调用 FileUpload#visitTree 下面的方法.
Here the NativeFileUploadDecoder is being called. However that's not happening in my Spring boot project and no method below FileUpload#visitTree is invoked.
我尝试了其他选择，发现当我使用一些 <h:form enctype="multipart/form-data"> 没有调用内部组件的任何操作方法，即使当我放置一个普通的 h:commandButton.
I tried other choices and found out that when I use some <h:form enctype="multipart/form-data"> none of the action methods for components inside are invoked, even when I place a plain h:commandButton.
推荐答案
最后，我使用 Apache Commons 库让它工作起来.与我们在标准 web.xml 文件中所做的类似，这就是我的上下文初始值设定项:
Finally, I got it working using the Apache Commons library. Similarly that what we might do in a standard web.xml file, that's my context initializer:
@Bean
public ServletContextInitializer initializer() {
return new ServletContextInitializer() {
@Override
public void onStartup(ServletContext servletContext)
throws ServletException {
servletContext.setInitParameter("primefaces.THEME", "bluesky");
servletContext.setInitParameter(
"javax.faces.FACELETS_SKIP_COMMENTS", "true");
servletContext.setInitParameter(
"com.sun.faces.expressionFactory",
"com.sun.el.ExpressionFactoryImpl");
servletContext.setInitParameter("primefaces.UPLOADER",
"commons");
}
};
}
我明确地告诉 Primefaces 使用 commons 上传器，就像在文档中所说的一样(另一种选择是使用 native，这不起作用).
I explicitly tell Primefaces to use the commons uploader, like said in docs (the other choice is to use native, which is not working).
然后，只需将这两个依赖项添加到项目中，我们就可以开始了:
Then, just adding this two dependencies to the project, we're ready to go:
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.2</version>
</dependency>
我在 native 模式下为某些响应打开线程.
I keep the thread opened for some response based in the native mode.
另见:
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