我正在尝试在App Engine开发服务器上使用jsf运行一个Maven项目,对于每个托管bean,我都会收到404错误(未找到)。我编辑了http://www.mkyong.com/jsf2/jsf-2-0-hello-world-example/中的文件,以与GAE一起使用。以下是修改后的文件:
HelloBean.java
package com.mkyong.common;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import java.io.Serializable;
@ManagedBean
@RequestScoped
public class HelloBean implements Serializable {
public String getName() {
return "abc";
}
}
web.xml
<?xml version="1.0" encoding="utf-8"?>
<web-app
version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>client</param-value>
</context-param>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<context-param>
<param-name>javax.faces.DEFAULT_SUFFIX</param-name>
<param-value>.xhtml</param-value>
</context-param>
<context-param>
<param-name>com.sun.faces.enableThreading</param-name>
<param-value>false</param-value>
</context-param>
<!-- Faces Servlet -->
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Faces Servlet Mapping -->
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.jsf</url-pattern>
</servlet-mapping>
<!-- Welcome page -->
<welcome-file-list>
<welcome-file>index.jsf</welcome-file>
</welcome-file-list>
</web-app>
index.xhtml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html">
<h:head>
<title>JSF 2.0 Hello World</title>
</h:head>
<h:body bgcolor="white">
<h3>JSF 2.0 Hello World Example - welcome.xhtml</h3>
<h4>Welcome #{helloBean.name}</h4>
</h:body>
</html>
和pom.xml
<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.mkyong.common</groupId>
<artifactId>JavaServerFaces</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>JavaServerFaces Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<!-- Google AppEngine -->
<dependency>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-api-1.0-sdk</artifactId>
<version>1.8.5</version>
</dependency>
<!-- Servlet dependency -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!-- JSF -->
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-api</artifactId>
<version>2.2.4</version>
</dependency>
<dependency>
<groupId>com.sun.faces</groupId>
<artifactId>jsf-impl</artifactId>
<version>2.2.4</version>
</dependency>
</dependencies>
<build>
<finalName>JavaServerFaces</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<archiveClasses>true</archiveClasses>
<webResources>
<resource>
<directory>${basedir}/src/main/webapp/WEB-INF</directory>
<filtering>true</filtering>
<targetPath>WEB-INF</targetPath>
</resource>
</webResources>
</configuration>
</plugin>
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>appengine-maven-plugin</artifactId>
<version>1.8.5</version>
<configuration>
<disableUpdateCheck>true</disableUpdateCheck>
</configuration>
</plugin>
</plugins>
</build>
</project>
其他文件:appengine-web.xml和logging.properties保持不变。
怎么了?JSF依赖项/配置?
您使用的是JSF 2.2.4,但您声称使用的是JSF 2.0,这是您在hello world示例中注意到的,您刚刚从教程中复制/粘贴了标题为JSF 2.0 Hello World的标题。请注意,JSF 2.2至少需要Servlet 3.0 API才能工作,但是您使用的是Servlet 2.5 API(在maven pom中已注明)。您有两种方法可以解决此问题:
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