<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0" 
    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_3_0.xsd">
    
    <filter>
        <filter-name>openSessionInViewFilter</filter-name>
        <filter-class>
              org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
    </filter>
    
    <filter-mapping>
        <filter-name>openSessionInViewFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    
    <!-- 配置spring核心servlet 跳转的时候要用到-->  
    <servlet>  
        <servlet-name>spring</servlet-name>  
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
        <load-on-startup>1</load-on-startup>  
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-servlet.xml</param-value>
        </init-param>
    </servlet>  

    <servlet-mapping>  
        <servlet-name>spring</servlet-name>  
        <url-pattern>/</url-pattern>  
    </servlet-mapping>  
    
    <jsp-config>
        <taglib>
            <taglib-uri>/WEB-INF/tlds/arch5.tld</taglib-uri>
            <taglib-location>/WEB-INF/tlds/arch5.tld</taglib-location>
        </taglib>
    </jsp-config>    
</web-app>

@OneToMany(cascade =CascadeType.REFRESH,fetch=FetchType.LAZY)
@JoinColumn(name = "codeGroupId",referencedColumnName="id",insertable=false,updatable=false)
public List<CodeType> getCodeTypeList() {
return codeTypeList;
}

package com.mvc.tag;


import java.io.IOException;
import java.util.List;

import javax.servlet.jsp.JspContext;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspWriter;
import javax.servlet.jsp.tagext.SimpleTagSupport;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.mvc.model.CodeGroup;
import com.mvc.model.CodeType;
import com.mvc.service.CodeGroupService;
import com.mvc.service.impl.CodeGroupServiceImpl;
public class SimpleTagTest extends SimpleTagSupport{
    

    private String groupvalue;
    public String getGroupvalue() {
        return groupvalue;
    }
    public void setGroupvalue(String groupvalue) {
        this.groupvalue = groupvalue;
    }

    @Override
    public void doTag() throws JspException, IOException {
        JspContext ctx = getJspContext();
        JspWriter out = ctx.getOut();
        ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
        CodeGroupService codeGroupService = (CodeGroupService) ac.getBean("CodeGroupService");
        CodeGroup codeGroup = codeGroupService.getCodeGroupByGroupValue(groupvalue);
        List<CodeType> codeTypeList = codeGroup.getCodeTypeList();
        StringBuilder sb = new StringBuilder();
        sb.append("<select>");
        for(CodeType codeType:codeTypeList){
            sb.append("<option>"+codeType.getCodeName()+"</option>");
        }
        sb.append("</select>");
        out.println(sb.toString());
    }
}