[英]Struts2 Running error on Netbeans 731
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颜色配置的颜色的页面( Display.jsp
)。 我从Budi Karniawan的Struts2教程中获得了示例。 当我手动剪切并粘贴源代码并作为NB Web应用程序手动构建应用程序时,尽管RGB参数以正确的格式输入,但RGB参数仍会引发验证错误,因此它运行良好(我检查是否使用逗号分隔的数字输入RGB坐标,即:绿色为0,255,0)。 目录结构为:
然后,我决定导入项目文件(从“现有来源”选项创建Web应用程序)。 我使用了ant build.xml
文件来编译和运行该应用程序。
当我通过应用名称运行该应用时:
http://localhost:8084/Budi7c
我得到:
no Action mapped for namespace [/]
然后我添加映射到struts.xml
的动作名称
http://localhost:8084/Budi7c/Design1.action
我得到了HTTP404。但是,当我尝试手动构建项目时,上面的Deisgn1.action参考起作用了。 鉴于以下文件,任何人都可以告诉我正确导入和运行此应用程序的最佳方法吗? 我宁愿使用一个ant脚本而不是“ MAVEN”(因为使用Maven构建Struts2似乎存在很多问题)。 我只想知道一种在尝试运行struts动作时避免404错误的方法。
如果我尝试手动构建应用程序,则输入验证将失败(即使我输入的数字是用逗号隔开)。 如果我尝试导入并使用Ant来确保正确的构建,则最终会得到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>
我试图将Web目录文件夹从/jsp
更改为/
以便项目结构与目录结构相同。 然后,我使用ant build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)
从项目浏览器中看不到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,则它应该是[project root]/src/main/webapp
。 该目录应包含WEB-INF
文件夹。 如果在项目设置中将Web内容根文件夹设置为/jsp
,那么这是错误的,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内容根目录将相同,或者在项目根文件夹中创建一个新文件夹,即WebContent
然后在其中放置jsp
, WEB-INF
和其他Web资源。 将Web内容根项目设置设置为/WebContent
。 然后,您可以在结果映射中使用/jsp/
。
好吧,这就是我解决的方法。 我使用Netbeans的“具有现有资源的Web应用程序”来导入项目。 由于某些原因,导入的项目未注册“ jsp”目录。 它只是在Web Pages目录中看到JSP文件,而不在Web Pages / jsp中看到。 因此,我只是在struts.xml中删除了/ jsp参考。 该应用程序现在可以正常运行,并且不再存在验证错误。
我对可以运行应用程序的程度感到满意,但是由于导入的目录结构显然是错误的(并且错过了jsp文件夹),我完全理解IDE如何构建这类应用程序,对此我并不满意。 如果有人可以进一步阐明这一点,或者如果我应该在Netbeans中构建Struts2的主题下发表另一个问题,将不胜感激。
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