找不到ActionMappings或ActionFormBeans集合

分类：编程问答

如何解决找不到ActionMappings或ActionFormBeans集合

| 你好，伙计，我是struts的新手，但是在struss中运行程序时却出现了这样的错误。 
org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:531)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:332)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause

javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:901)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:830)
    org.apache.jsp.insert_jsp._jspService(insert_jsp.java:83)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:68)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:332)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)

root cause

javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection
    org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:798)
    org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:506)
    org.apache.jsp.insert_jsp._jspx_meth_html_005fform_005f0(insert_jsp.java:136)
    org.apache.jsp.insert_jsp._jspx_meth_html_005fhtml_005f0(insert_jsp.java:106)
    org.apache.jsp.insert_jsp._jspService(insert_jsp.java:73)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:68)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:332)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
mycode是这样的…… web.xml 
<web-app>
    <servlet>
        <servlet-name>one</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>one</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
</web-app>
struts-config.xml 
<struts-config>
    <form-beans>
        <form-bean name=\"insertForm\" type=\"com.cac.struts.InsertForm\">
    </form-beans>
    <action-mappings>
        <action path=\"/insert\" type=\"com.cac.struts.InsertAction\" name=\"insertForm\">
            <forward name=\"success\" path=\"/success.jsp\">
            <forward name=\"failure\" path=\"/failure.jsp\">
        </action>
    </action-mappings>
</struts-config>
你好，伙计，我是struts的新手，但是在struss中运行程序时却出现了这样的错误。 
org.apache.jasper.JasperException: javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection
    org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:531)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:332)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
根本原因 
javax.servlet.ServletException: javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:901)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:830)
    org.apache.jsp.insert_jsp._jspService(insert_jsp.java:83)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:68)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:332)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
根本原因 
javax.servlet.jsp.JspException: Cannot find ActionMappings or ActionFormBeans collection
    org.apache.struts.taglib.html.FormTag.lookup(FormTag.java:798)
    org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:506)
    org.apache.jsp.insert_jsp._jspx_meth_html_005fform_005f0(insert_jsp.java:136)
    org.apache.jsp.insert_jsp._jspx_meth_html_005fhtml_005f0(insert_jsp.java:106)
    org.apache.jsp.insert_jsp._jspService(insert_jsp.java:73)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:68)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:389)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:332)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
mycode是这样的…… InsertModel.java 
package com.cac.struts;
import java.sql.*;
public class InsertModel
{
    public boolean insert(String name,String branch,int regd)
    {
        boolean b=false;
        try
        {
            Class.forName(\"sun.jdbc.odbc.JdbcOdbcDriver\");
            Connection con=DriverManager.getConnection(\"jdbc:odbc:mohit\",\"system\",\"rock\");
            PreparedStatement ps=con.prepareStatement(\"insert into emp values(?,?,?)\");
            ps.setString(1,name);
            ps.setString(2,branch);
            ps.setInt(3,regd);
            int k=ps.executeUpdate();
            if(k>0)
                b=true;
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }
        return b;
    }
}
InsertForm.java 
package com.cac.struts;
import org.apache.struts.action.ActionForm;
public class InsertForm extends ActionForm
{
    private int regd;
    private String name;
    private String branch;
    public void setRegd(int r)
    {
        regd=r;
    }
    public int getRegd()
    {
        return regd;
    }
    public void setName(String name)
    {
        this.name=name;
    }
    public String getName()
    {
        return name;
    }
    public void setBranch(String branch)
    {
        this.branch=branch;
    }
    public String getBranch()
    {
        return branch;
    }
}
InsertAction.java 
package com.cac.struts;
import org.apache.struts.action.*;
import javax.servlet.http.*;
public class InsertAction extends Action
{
    public ActionForward execute(ActionMapping am,ActionForm af,HttpServletRequest hreq,HttpServletResponse hres) throws Exception
    {
        String key=\"failure\";
        InsertForm iif=(InsertForm)af;
        int regd=iif.getRegd();
        String name=iif.getName();
        String branch=iif.getBranch();
        InsertModel im=new InsertModel();
        boolean b=im.insert(name,branch,regd);
        if(b)
        {
            key=\"success\";
        }
        ActionForward af1=am.findForward(key);
        return af1;
    }
}
web.xml 
<web-app>
    <servlet>
        <servlet-name>one</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>one</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
</web-app>
struts-config.html 
<struts-config>
    <form-beans>
        <form-bean name=\"insertForm\" type=\"com.cac.struts.InsertForm\">
    </form-beans>
    <action-mappings>
        <action path=\"/insert\" type=\"com.cac.struts.InsertAction\" name=\"insertForm\">
            <forward name=\"success\" path=\"/success.jsp\">
            <forward name=\"failure\" path=\"/failure.jsp\">
        </action>
    </action-mappings>
</struts-config>
insert.jsp 
<%@ taglib uri=\"/WEB-INF/struts-html.tld\" prefix=\"html\"%>
<html:html>
    <body bgcolor=\"yellow\">
    <center>
        <h1>Student Application</h1>
        <html:form action=\"insert\" method=\"post\">
            regd<html:text property=\"regd\"/><br><br>
            name<html:text property=\"name\"/><br><br>
            branch<html:text property=\"branch\"/><br><br>
        <html:submit>insert</html:submit>
        </html:form>
    </center>
    </body>
</html:html>
此外，我还使用lib和struts-html.tld中的所有jar文件。请...请帮助我... !!     

解决方法

将commons-beanutils jar添加到您的类路径可以解决此问题。     ,您没有在动作映射..in struts-config.xml中添加输入。input = \“ / insert.jsp \” 尝试这个 
< action path=\"/insert\" type=\"com.cac.struts.InsertAction\" 
        name=\"insertForm\" scope=\"request\" validate=\"false\" input=\"/insert.jsp\">
好     ,可能您先在web.xml中输入了条目，然后又添加了所需的jar，尤其是commons-beanutils.jar。只需删除web.xml的内容并重写它们即可。     ,请确保您的项目中包含以下jar antlr-2.7.6.jar commons-beanutils-1.7.0.jar commons-chain-1.2.jar commons-collections-3.1.jar commons-digester-2.0.jar commons-fileupload-1.2.2.jar commons-io-2.0.1.jar commons-lang-2.5.jar commons-logging-1.1.1.jar commons-logging-api-1.1.jar commons-validator-1.3.1.jar dom4j-1.6.1.jar hibernate-jpa-2.0-api-1.0.1.Final.jar hibernate3.jar javassist-3.12.0.GA.jar jstl-api-1.2.jar jstl-impl-1.2.jar jta-1.1.jar mysql-connector-java-5.1.17-bin.jar ognl-3.0.1.jar slf4j-api-1.6.1.jar slf4j-log4j12-1.6.2.jar 春豆2.5.6.jar spring-context-2.5.6.jar 弹簧核心2.5.6.jar 弹簧测试2.5.6.jar spring-web-2.5.6.jar struts2-core-2.2.3.1.jar xwork-core-2.2.3.1.jar 如果仍然遇到问题，请从Google代码下载以下示例项目 http://struts-workspace-setup.googlecode.com/svn/trunk/     ,您错过了
web.xml
中的映射，应该是这样的： 
<web-app>
    <servlet>
        <servlet-name>one</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <init-param>
            <param-name>config</param-name>
            <param-value>/WEB-INF/struts-config.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>one</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
</web-app>
还要将
struts-config.html
重命名为
struts-config.xml
。     

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