Struts2在Netbeans 731上运行错误

时间：2013-08-02 22:24:59

标签： java jsp netbeans struts2 struts

尝试构建一个Struts2应用程序，该应用程序将用户定向到显示用户定义的RGB颜色配置颜色的页面（Display.jsp）。我从Budi Karniawan的Struts2教程中得到了一些例子。当我手动剪切并粘贴源代码并手动构建应用程序作为NB Web应用程序时，它运行正常尽管RGB参数抛出验证错误，尽管以正确的格式输入（我检查我输入使用逗号分隔的数字为RGB坐标即：绿色为0,255,0）。目录结构是：

enter image description here

然后我决定导入项目文件（从Existing Sources选项创建Web应用程序）。我使用ant build.xml文件来编译和运行应用程序。

当我通过应用程序名称运行应用程序时：

http://localhost:8084/Budi7c

我明白了：

no Action mapped for namespace [/]

然后我追加映射在struts.xml

中的动作名称 
http://localhost:8084/Budi7c/Design1.action

我得到了一个HTTP 404.但是当我尝试手动构建项目时，上面的Deisgn1.action引用有效。任何人都可以告诉我在给定以下文件的情况下正确导入和运行此应用程序的最佳方法吗？我宁愿使用ant脚本而不是MAVEN（因为使用Maven构建Struts2似乎存在很多问题）。我想知道在尝试运行struts操作时避免404错误的方法。

如果我尝试手动构建应用程序，则输入验证失败（即使我输入数字并用逗号分隔）。如果我尝试导入并使用Ant来确保正确的构建，我最终会得到404。

该应用程序如下：

web.xml 

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app 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"
     version="2.5"> 

     <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>



<!-- Restrict direct access to JSPs. 
For the security constraint to work, the auth-constraint
and login-config elements must be present -->
<security-constraint>
    <web-resource-collection>
        <web-resource-name>JSPs</web-resource-name>
        <url-pattern>/jsp/*</url-pattern>
    </web-resource-collection>
    <auth-constraint/>
</security-constraint>

<login-config>
    <auth-method>BASIC</auth-method>
</login-config>
</web-app>

struts.xml： 

<?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.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="true" />

<package name="app07c" extends="struts-default">
    <action name="Design1">
        <result>/jsp/Design.jsp</result>
    </action>
    <action name="Design2" class="app07c.Design">
        <result name="input">/jsp/Design.jsp</result>
        <result name="success">/jsp/Display.jsp</result>
    </action>
</package>

</struts>

Color.java 

package app07c;
import com.opensymphony.xwork2.ActionSupport;

public class Color extends ActionSupport {
private int red;
private int green;
private int blue;
public int getBlue() {
    return blue;
}
public void setBlue(int blue) {
    this.blue = blue;
}
public int getGreen() {
    return green;
}
public void setGreen(int green) {
    this.green = green;
}
public int getRed() {
    return red;
}
public void setRed(int red) {
    this.red = red;
}
public String getHexCode() {
    return (red < 16? "0" : "") 
            + Integer.toHexString(red)
            + (green < 16? "0" : "")
            + Integer.toHexString(green) 
            + (blue < 16? "0" : "")
            + Integer.toHexString(blue);
}
}

Design.java 

package app07c;
import com.opensymphony.xwork2.ActionSupport;

public class Design extends ActionSupport {
private String designName;
private Color color;
public Color getColor() {
    return color;
}
public void setColor(Color color) {
    this.color = color;
}
public String getDesignName() {
    return designName;
}
public void setDesignName(String designName) {
    this.designName = designName;
}
}

MyColorConverter.java 

package app07c.converter;
import java.util.Map;
import org.apache.struts2.util.StrutsTypeConverter;
import app07c.Color;
import com.opensymphony.xwork2.conversion.TypeConversionException;

public class MyColorConverter extends StrutsTypeConverter {
public Object convertFromString(Map context, String[] values,
        Class toClass) {
    boolean ok = false;
    String rgb = values[0];
    String[] colorComponents = rgb.split(",");
    if (colorComponents != null 
            && colorComponents.length == 3) {
        String red = colorComponents[0];
        String green = colorComponents[1];
        String blue = colorComponents[2];
        int redCode = 0;
        int greenCode = 0;
        int blueCode = 0;
        try {
            redCode = Integer.parseInt(red.trim());
            greenCode = Integer.parseInt(green.trim());
            blueCode = Integer.parseInt(blue.trim());
            if (redCode >= 0 && redCode < 256 
                    && greenCode >= 0 && greenCode < 256 
                    && blueCode >= 0 && blueCode < 256) {
                Color color = new Color();
                color.setRed(redCode);
                color.setGreen(greenCode);
                color.setBlue(blueCode);
                ok = true;
                return color;
            }
        } catch (NumberFormatException e) {
        }
    }
    if (!ok) {
        throw new 
                TypeConversionException("Invalid color codes");
    }
    return null;
}

public String convertToString(Map context, Object o) {
    Color color = (Color) o;
    return color.getRed() + "," 
            + color.getGreen() + ","
            + color.getBlue();
}
}

Design.jsp 

<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Color</title>
<style type="text/css">@import url(css/main.css);</style>
<style>
.errorMessage {
color:red;
}
</style>
</head>
<body>
<div id="global" style="width:450px">
<h4>Color</h4>
Please enter the RGB components, each of which is
an integer between 0 and 255 (inclusive). Separate two components
with a comma. For example, green is 0,255,0.
<s:form action="Design2">
    <s:textfield name="designName" label="Design Name"/>
    <s:textfield name="color" label="Color"/>
    <s:submit/>     
</s:form>

</div>
</body>
</html>

Display.jsp 

<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Design Details</title>
<style type="text/css">@import url(css/main.css);</style>
<style type="text/css">
     .colorSample {
border:1px solid black;
width:100%;
height:100px;
background:#<s:property value="color.hexCode"/>;
}
</style>
</head>
<body>
<div id="global" style="width:250px">
<h4>Design details:</h4>
    Design name: <s:property value="designName"/>
    <br/>Color code: <s:property value="color"/>
    <div class="colorSample"/>
    </div>
    </body>
     </html>

我尝试将网页内容文件夹从/jsp更改为/，以便项目结构与目录结构相同。然后我使用ant构建脚本来编译和运行项目并获得以下堆栈：

ant -f C:\\struts2\\budi_ebook\\struts2extractb\\app07c -DforceRedeploy=false     -Ddirectory.deployment.supported=true -Dnb.wait.for.caches=true run
init:
 deps-module-jar:
deps-ear-jar:
deps-jar:
Warning: Program Files (x86)\F-Secure\Anti-Virus\aquarius\fa.log modified in the future.
Warning: Program Files\CommVault\Simpana\Log Files\CVD.log modified in the future.
Warning: Users\ManaarDC\NTUSER.DAT modified in the future.
Warning: Users\ManaarDC\ntuser.dat.LOG1 modified in the future.
Warning: Users\RedGuard_Admin.MANAARNET\AppData\Local\Temp\3\output1375645810208 modified in     the future.
Warning: Users\RedGuard_Admin.MANAARNET\AppData\Local\Temp\3\toolbar_log.txt modified in the     future.
Warning: Windows\Temp\avg_secure_search.log modified in the future.
Warning: app\ManaarDC\diag\rdbms\orcldw\orcldw\trace\orcldw_dbrm_3148.trc modified in the future.
Warning: app\ManaarDC\diag\rdbms\orcldw\orcldw\trace\orcldw_dbrm_3148.trm modified in the future.
Warning: app\ManaarDC\product\11.2.0\dbhome_1\D5H9RBP1.ManaarNet.com_orclDW\sysman\emd\agntstmp.txt modified in the future.
 Warning: app\ManaarDC\product\11.2.0\dbhome_1\D5H9RBP1.ManaarNet.com_orclDW\sysman\log\emagent.trc modified in the future.
Warning: app\ManaarDC\product\11.2.0\dbhome_1\D5H9RBP1.ManaarNet.com_orclDW\sysman\log\emoms.log modified in the future.
Warning: app\ManaarDC\product\11.2.0\dbhome_1\D5H9RBP1.ManaarNet.com_orclDW\sysman\log\emoms.trc modified in the future.    
Warning: app\ManaarDC\product\11.2.0\dbhome_1\oc4j\j2ee\OC4J_DBConsole_D5H9RBP1.ManaarNet.com_orclDW\log\em-application.log modified in the future.
Warning: inetpub\logs\LogFiles\W3SVC1\u_ex130804.log modified in the future.
C:\struts2\budi_ebook\struts2extractb\app07c\nbproject\build-impl.xml:841: 
java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.util.Arrays.copyOfRange(Arrays.java:2694)
at java.lang.String.<init>(String.java:203)
at java.lang.String.substring(String.java:1913)
at java.util.StringTokenizer.nextToken(StringTokenizer.java:352)
at org.apache.tools.ant.util.FileUtils.normalize(FileUtils.java:741)
at org.apache.tools.ant.util.FileUtils.resolveFile(FileUtils.java:616)
at org.apache.tools.ant.types.resources.FileResource.<init>(FileResource.java:60)
at org.apache.tools.ant.util.SourceFileScanner$1.<init>(SourceFileScanner.java:96)
at org.apache.tools.ant.util.SourceFileScanner.restrict(SourceFileScanner.java:95)
at org.apache.tools.ant.taskdefs.Copy.buildMap(Copy.java:787)
at org.apache.tools.ant.taskdefs.Copy.scan(Copy.java:744)
at org.apache.tools.ant.taskdefs.Copy.iterateOverBaseDirs(Copy.java:666)
at org.apache.tools.ant.taskdefs.Copy.execute(Copy.java:563)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
at sun.reflect.GeneratedMethodAccessor90.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:392)
at org.apache.tools.ant.Target.performTasks(Target.java:413)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
at org.apache.tools.ant.module.bridge.impl.BridgeImpl.run(BridgeImpl.java:283)
at org.apache.tools.ant.module.run.TargetExecutor.run(TargetExecutor.java:541)
at org.netbeans.core.execution.RunClassThread.run(RunClassThread.java:153)
  BUILD FAILED (total time: 12 minutes 5 seconds)

2 个答案:

答案 0 :(得分：1)

无法从项目资源管理器中看到 Web内容根目录，因为它不是目录结构，而是项目结构。例如，如果您使用maven，那么它应该是[project root]/src/main/webapp。该目录应包含WEB-INF文件夹。如果您在项目设置中将 Web内容根文件夹设置为/jsp，那么它是错误的，因为它会影响JSP和其他项目文件。您应该将其设置为/。在这种情况下，项目根目录和 Web内容根将相同或在项目根目录文件夹中创建一个新文件夹说{{1在那里放置WebContent，jsp和其他网络资源。将 Web内容根项目设置设置为WEB-INF。然后，您可以在结果映射中使用/WebContent。

答案 1 :(得分：0)

这就是我如何解决它。我使用Netbeans的Web Applications with Existing Sources'来导入项目。由于某种原因导入的项目没有注册'jsp'目录。它只是看到Web页面目录中的JSP文件而不是Web Pages / jsp。所以我只是删除了struts.xml中的/ jsp引用。该应用程序现在运行正常，验证错误不再存在。

我很满意这个答案，我可以运行应用程序，但我不高兴我完全理解IDE如何构建这些类型的应用程序，因为导入的目录结构明显错误（并错过了jsp夹）。如果有人能够进一步阐明这一点，或者我是否应该就Netbeans中构建Struts2的主题发表一个单独的问题，将不胜感激

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