android开发 服务器端访问MySQL数据库，并把数据库中的某张表解析成xml格式输出到浏览器

我们此时只要写一个Servlet就可以了：

 public class UpdateMenuServlet extends HttpServlet {
     /**
      *
      */
     private static final long serialVersionUID = 1L;
     // 构造方法
     public UpdateMenuServlet() {
         super();
     }
     // 销毁方法
     public void destroy() {
         super.destroy();
     }
     // 响应Get请求
     public void doGet(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
         response.setContentType("text/xml");
         PrintWriter out = response.getWriter();
         // 实例化dao
         UpdateDao dao = new UpdateDaoImpl();
         // 获得菜谱列表
         List<Menu> list = dao.getMenuList();

         // 拼XML格式数据
         out.println("<?xml version='1.0' encoding='UTF-8'?>");
         // 根节点
         out.println("<menulist>");
             for (int i = 0; i <list.size(); i++) {
                 Menu m = list.get(i);
                 out.println("<menu>");
                     // 菜谱编号
                     out.print("<id>");
                         out.print(m.getId());
                     out.println("</id>");
                     // 分类
                     out.print("<typeId>");
                         out.print(m.getTypeId());
                     out.println("</typeId>");
                     // 名称
                     out.print("<name>");
                         out.print(m.getName());
                     out.println("</name>");
                     // 图片路径
                     out.print("<pic>");
                         out.print(m.getPic());
                     out.println("</pic>");
                     // 价格
                     out.print("<price>");
                         out.print(m.getPrice());
                     out.println("</price>");
                     // 备注
                     out.print("<remark>");
                         out.print(m.getRemark());
                     out.println("</remark>");

                 out.println("</menu>");
             }
         out.println("</menulist>");
         out.flush();
         out.close();
     }
     // 响应Post请求
     public void doPost(HttpServletRequest request, HttpServletResponse response)
             throws ServletException, IOException {
         doGet(request,response);
     }
     // 初始化方法
     public void init() throws ServletException {
     }
 }

然后就是直接在浏览器中输入这个Servlet的具体网址就可以了：

   <?xml version="1.0" encoding="UTF-8" ?>
 - <menulist>
 - <menu>
   <id>1</id>
   <typeId>1</typeId>
   <name>水煮鱼</name>
   <pic>test</pic>
   <price>20</price>
   <remark>test</remark>
   </menu>
 - <menu>
   <id>2</id>
   <typeId>2</typeId>
   <name>凉拌西红柿</name>
   <pic>tets</pic>
   <price>10</price>
   <remark>test</remark>
   </menu>
 - <menu>
   <id>3</id>
   <typeId>3</typeId>
   <name>tofu</name>
   <pic>test</pic>
   <price>8</price>
   <remark>test</remark>
   </menu>
   </menulist>