OpenLayers学习笔记9——使用servlet与jquery-ui实现自动提示输入

public class AddressAutocompleteServlet extends HttpServlet {

	/**
	 * The doGet method of the servlet. <br>
	 * 
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request
	 *            the request send by the client to the server
	 * @param response
	 *            the response send by the server to the client
	 * @throws ServletException
	 *             if an error occurred
	 * @throws IOException
	 *             if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		// 设置输出内容格式和编码
		response.setContentType("text/html;charset=utf-8");
		PrintWriter out = response.getWriter();
		// 设置接收参数编码格式
		response.setCharacterEncoding("utf-8");

		// 构造sql查询语句
		String schoolAddress = new String(request.getParameter("term")
				.getBytes("ISO-8859-1"), "UTF8");
		String sql = "select address from school where address like " + "\'"
				+ "%" + schoolAddress + "%" + "\'";
		PoiDBBean poiDBBean = new PoiDBBean();

		// 查询结果以json数据格式返回
		JSONArray array = new JSONArray();
		try {
			ResultSet resultSet = poiDBBean.query(sql);

			while (resultSet.next()) {
				JSONObject object = new JSONObject().element("label",
						resultSet.getString(1)).element("value",
						resultSet.getString(1));

				array.add(object);

			}
			out.println(array.toString());
			System.out.println(array.toString());

		} catch (SQLException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ClassNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} finally {
			try {
				poiDBBean.close();
			} catch (SQLException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

}

3、客户端使用

  $("#schoolAddress").autocomplete({
            source: "http://127.0.0.1:8080/taxGIS/servlet/AddressAutocompleteServlet",
            minLength: 3
        });