为什么我简单的Struts2示例不起作用?

时间:2014-09-04 09:16:28

标签: java eclipse jsp struts2 glassfish

我正在使用Glassfish 4.0和Eclipse Luna 4.4.0并下载了最新的struts2库。我已经将所有struts2 jar添加到项目中,只是为了确定。我创建了一个动态Web项目。这是我的 web.xml 文件:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
    <display-name>Struts2Starter</display-name>
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
        <init-param>
            <param-name>actionPackages</param-name>
            <param-value>org.demian.javabrains.action</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

这是我的 struts.xml 文件:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <constant name="struts.devMode" value="true" />
    <package name="basicstruts2" extends="struts-default">
        <action name="getTutorial" class="org.demian.javabrains.action.TutorialAction" method="execute">
            <result name="success">/success.jsp</result>
            <result name="error">/error.jsp</result>
        </action>
    </package>
</struts>

这是我的 TutorialAction.java

package org.demian.javabrains.action;

import java.util.Date;
import com.opensymphony.xwork2.ActionSupport;

public class TutorialAction extends ActionSupport {
    private static final long serialVersionUID = 1L;

    public String execute() throws Exception {
        System.out.println("Hello from execute!");
        Date d = new Date();
        long milliseconds = d.getTime();
        if (milliseconds % 2 == 0)
            return SUCCESS;
        else
            return ERROR;
    }
}

我创建的其他2个页面是简单的.jsp页面:success.jsperror.jsp,两者都在主目录中。如果我输入此网址:http://localhost:8080/Struts2Starter/success.jsp,我会获得成功页面,这意味着Glassfish正在运行,但如果我输入此网址:http://localhost:8080/Struts2Starter/getTutorial.action我总是收到http错误404.我按照此页面上的说明操作:struts2 documentation。谁能告诉我我做错了什么?

修改

我尝试通过插入此链接

来使用struts2-config-browser-plugin调试应用程序
<a href="<s:url action="index" namespace="config-browser" />">Launch the configuration browser</a>

进入我的success.jsp页面,如下所示:http://struts.apache.org/release/2.2.x/docs/debugging-struts.html。当我点击链接时,它会给出另一个404错误。我不明白。这就像Struts2根本不起作用。这是启动服务器时的日志:https://dl.dropboxusercontent.com/u/27349592/glassfish_server_startup.txt

EDIT1

我安装了Tomcat 8.0.11,这是我启动服务器时收到的错误消息:https://dl.dropboxusercontent.com/u/27349592/tomcat8_server_startup.txt

1 个答案:

答案 0 :(得分:1)

我终于成功了!我做的第一件事就是删除我所包含的所有罐子,只添加我需要的罐子。以下是我加入的罐子:https://dl.dropboxusercontent.com/u/27349592/2014-09-05%2022_36_58-Preferences%20%28Filtered%29.png

在此之后,我在属性中配置了库 - &gt;部署项目组装:https://dl.dropboxusercontent.com/u/27349592/2014-09-05%2022_37_29-Properties%20for%20Struts2Tutorial.png

我的 web.xml 文件是:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
    <display-name>Struts2Tutorial</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

我的 struts.xml 文件是:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    <constant name="struts.devMode" value="true" />
    <package name="basicstruts2" extends="struts-default">
        <action name="getTutorial" class="org.demian.javabrains.action.TutorialAction" method="execute">
            <result name="success">/success.jsp</result>
            <result name="error">/error.jsp</result>
        </action>
    </package>
</struts>

我仍然不知道究竟是什么问题,但我想这可能是因为struts2库中存在依赖关系。