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Problem with the form.

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posted 14 years ago

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I have to create a login screen to enter the username and password with submit and reset as the two button for my application.
if i use html taglib (<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>) in login.jsp. then login.jsp is erroring and its displaying the blank screen.
if i remove that the entry box for username and password will not come.
Please advise where i am going wrong.
i have attached the web.xml,struts-config.xml and login.jsp.
i am using struts 1.3.10 blank for creating the application.
welcome.jsp

web.xml

struts-config.xml

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

<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
          "http://struts.apache.org/dtds/struts-config_1_3.dtd">
<struts-config>

<form-beans>
 			<form-bean name="loginForm"
                   type="app.LoginForm"/>
        <form-bean name="SignupForm" 
                   type="app.SignupForm"/>
    </form-beans>

<global-exceptions>
        
    </global-exceptions>

<global-forwards>
        
        
        <forward
            name="welcome"
            path="/Welcome.do"/>
    </global-forwards>

<action-mappings>
            
            
        <action
            path="/Welcome"
            forward="/pages/Welcome.jsp"/>
            
		 <action path="/login"
                 type="app.LoginAction"
     	         name="loginForm"    
          	     scope="request"
	             validate="true"
    	         input="/pages/Login.jsp">
        	    <forward name="success" path="/pages/Welcome.jsp"/>
            </action> 
            <action 
            path="/SignupSubmit"
            type="app.SignupSubmit"
            name="SignupForm"    
            scope="request"
            validate="true"
            input="/Register.jsp">
            <forward
                name="success"
                path="/pages/Welcome.jsp"/>
        </action>
   
    </action-mappings>

<message-resources parameter="MessageResources" />

<!--
     This plugin initialize Tiles definition factory. This later can takes some
	 parameters explained here after. The plugin first read parameters from
	 web.xml, thenoverload them with parameters defined here. All parameters
	 are optional.
     The plugin should be declared in each struts-config file.
       - definitions-config: (optional)
            Specify configuration file names. There can be several comma
		    separated file names (default: ?? )
       - moduleAware: (optional - struts1.1)
            Specify if the Tiles definition factory is module aware. If true
            (default), there will be one factory for each Struts module.
			If false, there will be one common factory for all module. In this
            later case, it is still needed to declare one plugin per module.
            The factory will be initialized with parameters found in the first
            initialized plugin (generally the one associated with the default
            module).
			  true : One factory per module. (default)
			  false : one single shared factory for all modules
	   - definitions-parser-validate: (optional)
	        Specify if xml parser should validate the Tiles configuration file.
			  true : validate. DTD should be specified in file header (default)
			  false : no validation

Paths found in Tiles definitions are relative to the main context.

To use this plugin, download and add the Tiles jar to your WEB-INF/lib
      directory then uncomment the plugin definition below.

<plug-in className="org.apache.struts.tiles.TilesPlugin" >

<set-property property="definitions-config"
                       value="/WEB-INF/tiles-defs.xml" />
      <set-property property="moduleAware" value="true" />
    </plug-in>
  -->  
  <plug-in className="org.apache.struts.tiles.TilesPlugin" >

<set-property property="definitions-config"
                       value="/WEB-INF/tiles-defs.xml" />
      
      <set-property property="moduleAware" value="true" />
    </plug-in>

<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
    <set-property
        property="pathnames"
        value="/org/apache/struts/validator/validator-rules.xml,
               /WEB-INF/validation.xml"/>
  </plug-in>

</struts-config>

Thanks for the consideration.

Sagar Rohankar

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Posts: 2908

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posted 14 years ago

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The taglib uri is correct, please check the the struts tag jar files are on classpath and if there is any error/exception, then post here.

And this question belongs to Struts forum, we've a separate section or it.

[LEARNING bLOG] | [Freelance Web Designer] | [and "Rohan" is part of my surname]

Jaidev Arer

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Posts: 38

posted 14 years ago

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Sagar thanks for the quick reply.
struts tag jar file is in /web-inf/lib folder.
is this the correct path?

David Newton

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posted 14 years ago

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How are you accessing the JSP? Directly, or through an action?

When posting code, *please* remove unnecessary config/comments, otherwise it's additional cognitive overhead that doesn't help solve the problem.

Jaidev Arer

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posted 14 years ago

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i am accessing the JSP Directly. i am calling login.jsp from another jsp.
Thanks

David Newton

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posted 14 years ago

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Struts tags won't work without going through an action.

Jaidev Arer

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posted 14 years ago

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Now i made i to come through an action page.
Now i am getting

type Exception report
HTTP Status 500
message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: java.lang.NullPointerException
	org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:286)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.NullPointerException
	org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:289)
	org.apache.struts.config.FormBeanConfig.createActionForm(FormBeanConfig.java:357)
	org.apache.struts.chain.commands.CreateActionForm.execute(CreateActionForm.java:92)
	org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:51)
	org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:305)
	org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:191)
	org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:283)
	org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
	org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:449)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

Please correct me if i have placed the error code in the wrong place

David Newton

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posted 14 years ago

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Looks like you don't have a form defined for the action/page.

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