Beans through jsp

hi,
i' m trainee developer and working in struts. i'm totally novice in this regard. my pl asked me to develop an application on struts. i'm getting problem while using bean through jsp. i'm writing code:
<jsp:useBean id="myBean" class="MyBean" type="MyBean" scope = "session"/>
the error is:
cannot resolve symbol
symbol : class MyBean
location: class org.apache.jsp.confirm_jsp
MyBean myBean = null;
^
total 3 errors associated with it. MyBean class is located in WEB-INF/classes
can any one help me out?

put your bean in a package and put that package under the WEB-INF/classes directory. Then use the fully qualified class name for the jsp:useBean:
//in the bean
package net.thelukes.myprog.beans;
//the jsp:useBean
<jsp:useBean id="myBean" class="net.thelukes.myprog.beans.MyBean" scope="session"/>

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              >>></head>
              >>><body>
              >>><jsp:usebean id = "ud" class = "userbn" >
              >>><jsp:setProperty name = "ud" property = "*" />
              >>></jsp:usebean>
              >>><ul>
              >>><li> name: <jsp:getProperty name = "ud" property = "name" />
              >>><li> email : <jsp:getProperty name = "ud" property = "email" />
              >>></ul>
              >>></body>
              >>><html>
              >>>
              >>>-------------------------------------------------------------
              >>>
              >>>here is my bean :
              >>>
              >>>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
              >>>
              >>>import java.io.*;
              >>>
              >>>public class userbn implements Serializable
              >>>{
              >>>
              >>>     private String name ;
              >>>
              >>>     private String email;
              >>>
              >>>     public void setName(String n)
              >>>     {
              >>>
              >>>          name = n;
              >>>     }
              >>>
              >>>     public void setEmail(String e)
              >>>     {
              >>>
              >>>          email = e;
              >>>     }
              >>>
              >>>     public String getName()
              >>>     {
              >>>
              >>>          return name;
              >>>     }
              >>>
              >>>     public String getEmail()
              >>>     {
              >>>
              >>>          return email;
              >>>     }
              >>>
              >>>     public userbn(){}
              >>>}
              >>>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
              >>>
              >>>pls help me.
              >>>Thanks
              >>>sravana.
              >>>
              >>
              >
              

  • Problem while access database by JSTL through JSP.

    I am trying to connect database by using JSTL through jsp.I am getting an exception.Please advise.
    Error:
    org.apache.jasper.JasperException: XML parsing error on file /WEB-INF/jsp/c.tld: (line 2, col 8): Document is invalid: no grammar found.
         at org.apache.jasper.xmlparser.ParserUtils.parseXMLDocument(ParserUtils.java:140)
         at org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImpl.java:200)
         at org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:140)
         at org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:309)
         at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:336)
         at org.apache.jasper.compiler.Parser.parseElements(Parser.java:750)
         at org.apache.jasper.compiler.Parser.parse(Parser.java:77)
         at org.apache.jasper.compiler.ParserController.parse(ParserController.java:157)
         at org.apache.jasper.compiler.ParserController.parse(ParserController.java:111)
         at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:183)
         at org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)
         at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:427)
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:142)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:240)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:187)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
         at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:445)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
         at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)
         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
         at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)
         at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
         at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
         at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
         at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
         at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
         at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
         at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
         at java.lang.Thread.run(Thread.java:534)
    JSP:
    <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
    <%@ taglib prefix="sql" uri="http://java.sun.com/jstl/sql" %>
    <%@ taglib prefix="fmt" uri="http://java.sun.com/jstl/fmt" %>
    <sql:setDataSource scope="application"
    driver="sun.jdbc.odbc.JdbcOdbcDriver"
    url="jdbc:oracle:thin:@3.173.130.12:1521:cup"
    user="sUerName"
    password="sPassword"
    />
    <sql:query var="Result">
    select * from imtinv.imi_error_message
    </sql:query>
    <html>
    <head>
    <title>
    Error Message Details
    </title>
    </head>
    <body bgcolor="white">
    This is the information stored in the Error Message Table in Depot Automation Systems
    <table>
    <c:forEach items="$(Result.rows)" var="row">
    <c:forEach items="$(rows)" var="column">
    <tr>
    <td align=right>
    <b><c:out value="$(column.key)" />:</b>
    </td>
    <td>
    <c:out value="$(column.value)" />:</b>
    </td>
    </tr>
    </c:forEach>
    </c:forEach>
    </table>
    </body>
    </html>
    Web.xml:
    <taglib>
    <taglib-uri>
    http://java.sun.com/jstl/xml
    </taglib-uri>
    <taglib-location>
    /WEB-INF/jsp/x.tld
    </taglib-location>
    </taglib>
    <taglib>
    <taglib-uri>
    http://java.sun.com/jstl/fmt
    </taglib-uri>
    <taglib-location>
    /WEB-INF/jsp/fmt.tld
    </taglib-location>
    </taglib>
    <taglib>
    <taglib-uri>
    http://java.sun.com/jstl/sql
    </taglib-uri>
    <taglib-location>
    /WEB-INF/jsp/sql.tld
    </taglib-location>
    </taglib>
    c.tld:
    <?xml version="1.0" encoding="UTF-8" ?>
    <taglib xmlns="http://java.sun.com/xml/ns/j2ee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee web-jsptaglibrary_2_0.xsd"
    version="2.0">
    <description>JSTL 1.1 core library</description>
    <display-name>JSTL core</display-name>
    <tlib-version>1.1</tlib-version>
    <short-name>c</short-name>
    <uri>http://java.sun.com/jsp/jstl/core</uri>
    <validator>
    <description>
    Provides core validation features for JSTL tags.
    </description>
    <validator-class>
    org.apache.taglibs.standard.tlv.JstlCoreTLV
    </validator-class>
    </validator>
    <tag>
    <description>
    Catches any Throwable that occurs in its body and optionally
    exposes it.
    </description>
    <name>catch</name>
    <tag-class>org.apache.taglibs.standard.tag.common.core.CatchTag</tag-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    Name of the exported scoped variable for the
    exception thrown from a nested action. The type of the
    scoped variable is the type of the exception thrown.
    </description>
    <name>var</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Simple conditional tag that establishes a context for
    mutually exclusive conditional operations, marked by
    <when> and <otherwise>
    </description>
    <name>choose</name>
    <tag-class>org.apache.taglibs.standard.tag.common.core.ChooseTag</tag-class>
    <body-content>JSP</body-content>
    </tag>
    <tag>
    <description>
    Simple conditional tag, which evalutes its body if the
    supplied condition is true and optionally exposes a Boolean
    scripting variable representing the evaluation of this condition
    </description>
    <name>if</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.IfTag</tag-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    The test condition that determines whether or
    not the body content should be processed.
    </description>
    <name>test</name>
    <required>true</required>
    <rtexprvalue>true</rtexprvalue>
    <type>boolean</type>
    </attribute>
    <attribute>
    <description>
    Name of the exported scoped variable for the
    resulting value of the test condition. The type
    of the scoped variable is Boolean.
    </description>
    <name>var</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Scope for var.
    </description>
    <name>scope</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Retrieves an absolute or relative URL and exposes its contents
    to either the page, a String in 'var', or a Reader in 'varReader'.
    </description>
    <name>import</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.ImportTag</tag-class>
    <tei-class>org.apache.taglibs.standard.tei.ImportTEI</tei-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    The URL of the resource to import.
    </description>
    <name>url</name>
    <required>true</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Name of the exported scoped variable for the
    resource's content. The type of the scoped
    variable is String.
    </description>
    <name>var</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Scope for var.
    </description>
    <name>scope</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Name of the exported scoped variable for the
    resource's content. The type of the scoped
    variable is Reader.
    </description>
    <name>varReader</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Name of the context when accessing a relative
    URL resource that belongs to a foreign
    context.
    </description>
    <name>context</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Character encoding of the content at the input
    resource.
    </description>
    <name>charEncoding</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    The basic iteration tag, accepting many different
    collection types and supporting subsetting and other
    functionality
    </description>
    <name>forEach</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.ForEachTag</tag-class>
    <tei-class>org.apache.taglibs.standard.tei.ForEachTEI</tei-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    Collection of items to iterate over.
    </description>
    <name>items</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    <type>java.lang.Object</type>
    </attribute>
    <attribute>
    <description>
    If items specified:
    Iteration begins at the item located at the
    specified index. First item of the collection has
    index 0.
    If items not specified:
    Iteration begins with index set at the value
    specified.
    </description>
    <name>begin</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    <type>int</type>
    </attribute>
    <attribute>
    <description>
    If items specified:
    Iteration ends at the item located at the
    specified index (inclusive).
    If items not specified:
    Iteration ends when index reaches the value
    specified.
    </description>
    <name>end</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    <type>int</type>
    </attribute>
    <attribute>
    <description>
    Iteration will only process every step items of
    the collection, starting with the first one.
    </description>
    <name>step</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    <type>int</type>
    </attribute>
    <attribute>
    <description>
    Name of the exported scoped variable for the
    current item of the iteration. This scoped
    variable has nested visibility. Its type depends
    on the object of the underlying collection.
    </description>
    <name>var</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Name of the exported scoped variable for the
    status of the iteration. Object exported is of type
    javax.servlet.jsp.jstl.core.LoopTagStatus. This scoped variable has nested
    visibility.
    </description>
    <name>varStatus</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Iterates over tokens, separated by the supplied delimeters
    </description>
    <name>forTokens</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.ForTokensTag</tag-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    String of tokens to iterate over.
    </description>
    <name>items</name>
    <required>true</required>
    <rtexprvalue>true</rtexprvalue>
    <type>java.lang.String</type>
    </attribute>
    <attribute>
    <description>
    The set of delimiters (the characters that
    separate the tokens in the string).
    </description>
    <name>delims</name>
    <required>true</required>
    <rtexprvalue>true</rtexprvalue>
    <type>java.lang.String</type>
    </attribute>
    <attribute>
    <description>
    Iteration begins at the token located at the
    specified index. First token has index 0.
    </description>
    <name>begin</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    <type>int</type>
    </attribute>
    <attribute>
    <description>
    Iteration ends at the token located at the
    specified index (inclusive).
    </description>
    <name>end</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    <type>int</type>
    </attribute>
    <attribute>
    <description>
    Iteration will only process every step tokens
    of the string, starting with the first one.
    </description>
    <name>step</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    <type>int</type>
    </attribute>
    <attribute>
    <description>
    Name of the exported scoped variable for the
    current item of the iteration. This scoped
    variable has nested visibility.
    </description>
    <name>var</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Name of the exported scoped variable for the
    status of the iteration. Object exported is of
    type
    javax.servlet.jsp.jstl.core.LoopTag
    Status. This scoped variable has nested
    visibility.
    </description>
    <name>varStatus</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Like <%= ... >, but for expressions.
    </description>
    <name>out</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.OutTag</tag-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    Expression to be evaluated.
    </description>
    <name>value</name>
    <required>true</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Default value if the resulting value is null.
    </description>
    <name>default</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Determines whether characters <,>,&,'," in the
    resulting string should be converted to their
    corresponding character entity codes. Default value is
    true.
    </description>
    <name>escapeXml</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Subtag of <choose> that follows <when> tags
    and runs only if all of the prior conditions evaluated to
    'false'
    </description>
    <name>otherwise</name>
    <tag-class>org.apache.taglibs.standard.tag.common.core.OtherwiseTag</tag-class>
    <body-content>JSP</body-content>
    </tag>
    <tag>
    <description>
    Adds a parameter to a containing 'import' tag's URL.
    </description>
    <name>param</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.ParamTag</tag-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    Name of the query string parameter.
    </description>
    <name>name</name>
    <required>true</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Value of the parameter.
    </description>
    <name>value</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Redirects to a new URL.
    </description>
    <name>redirect</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.RedirectTag</tag-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    The URL of the resource to redirect to.
    </description>
    <name>url</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Name of the context when redirecting to a relative URL
    resource that belongs to a foreign context.
    </description>
    <name>context</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Removes a scoped variable (from a particular scope, if specified).
    </description>
    <name>remove</name>
    <tag-class>org.apache.taglibs.standard.tag.common.core.RemoveTag</tag-class>
    <body-content>empty</body-content>
    <attribute>
    <description>
    Name of the scoped variable to be removed.
    </description>
    <name>var</name>
    <required>true</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Scope for var.
    </description>
    <name>scope</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Sets the result of an expression evaluation in a 'scope'
    </description>
    <name>set</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.SetTag</tag-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    Name of the exported scoped variable to hold the value
    specified in the action. The type of the scoped variable is
    whatever type the value expression evaluates to.
    </description>
    <name>var</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Expression to be evaluated.
    </description>
    <name>value</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Target object whose property will be set. Must evaluate to
    a JavaBeans object with setter property property, or to a
    java.util.Map object.
    </description>
    <name>target</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Name of the property to be set in the target object.
    </description>
    <name>property</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Scope for var.
    </description>
    <name>scope</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Creates a URL with optional query parameters.
    </description>
    <name>url</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.UrlTag</tag-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
    Name of the exported scoped variable for the
    processed url. The type of the scoped variable is
    String.
    </description>
    <name>var</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Scope for var.
    </description>
    <name>scope</name>
    <required>false</required>
    <rtexprvalue>false</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    URL to be processed.
    </description>
    <name>value</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    <attribute>
    <description>
    Name of the context when specifying a relative URL
    resource that belongs to a foreign context.
    </description>
    <name>context</name>
    <required>false</required>
    <rtexprvalue>true</rtexprvalue>
    </attribute>
    </tag>
    <tag>
    <description>
    Subtag of <choose> that includes its body if its
    condition evalutes to 'true'
    </description>
    <name>when</name>
    <tag-class>org.apache.taglibs.standard.tag.rt.core.WhenTag</tag-class>
    <body-content>JSP</body-content>
    <attribute>
    <description>
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