servlet端封装成json格式

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		response.setContentType("text/html; charset=UTF-8");
		PrintWriter out = response.getWriter();
		DBQueryImpl query = new DBQueryImpl();
		ArrayList<NoticeBean> _list = query.getNotice();	//返回一个NoticeBean类
		// 转为json格式
		// JSONArray array = JSONArray.fromObject(_list);

		JSONArray array = new JSONArray();
		array.addAll(_list);
		// 打印到网页上,不要打印方括号

		String str=array.toString();
		
		out.write(str);

		out.flush();
		out.close();
	}

private void getJSONString() {
		String urlPath = "http://192.168.1.102:8080/epay_server/QueryNotice";
		HttpClient client = new DefaultHttpClient();
		HttpPost post = new HttpPost(urlPath);
		try {
			InputStream responseStream = client.execute(post).getEntity()
					.getContent();
			// 记得转换成gbk编码
			BufferedReader bufferedReader = new BufferedReader(
					new InputStreamReader(responseStream, "UTF-8"));
			String webContentString = bufferedReader.readLine();
			System.out.println("webCont==>" + webContentString);

			// ItemParent item = new Gson().fromJson(webContentString,
			// ItemParent.class);
			// 生成类数组
			NoticeBean[] _notice = new Gson().fromJson(webContentString,	//自动解析成NoticeBean类
					NoticeBean[].class);
			ArrayList<NoticeBean> _list = new ArrayList<NoticeBean>();
			for (NoticeBean noticeBean : _list) {
				_list.add(noticeBean);
			}

//			遍历list表
			for (int i = 0; i < _notice.length; i++) {
				System.out.println(_notice[i].get_content());
			}
		} catch (Exception e) {
			System.out.println("解析失败!");
		}
	}