android+myeclipse+mysql下拉框数据绑定

原创作品，允许转载，转载时请务必声明作者信息和本声明。http://www.cnblogs.com/zhu520/p/8027036.html 

 本人小白，那个大神看到有问题可指出，谢谢。。。。

一：我使用的工具  myeclipse ，mysql ，Android studio 

二：服务器（后台）myeclipse

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1）：先配置先

  a: web.xml

这里的  <servlet-mapping> 我多设置一个  <url-pattern>*.json</url-pattern>用来区分是前台还是后台，这是我的习惯，你也可以不要，自己喜欢

<?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">
    <display-name></display-name>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml, classpath:spring-mybatis.xml</param-value>
    </context-param>

    <listener>
        <description>spring监听器</description>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <description>spring mvc servlet</description>
        <servlet-name>springMvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <description>spring mvc 配置文件</description>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <init-param>
            <param-name>activeReverseAjaxEnabled</param-name>
            <param-value>true</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

     
<servlet-mapping>
        <servlet-name>springMvc</servlet-name>
        <!-- 此处配置成*.do，对应struts的后缀习惯 -->
        <url-pattern>*.do</url-pattern>
        
          <!-- 此处配置成*.json，是为了能够截获"../*.json"格式的访问（例如android客户端） -->
        <url-pattern>*.json</url-pattern>
    </servlet-mapping>
    
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

</web-app>

web.xml