Ajax的工具类AjaxUtils，使用struts返回Json类型，ajaxutilsjson,public class

Ajax的工具类AjaxUtils，使用struts返回Json类型，ajaxutilsjson,public class

public class AjaxUtil {      /**      * ajax response method<br/>      * 如果出现异常，则返回错误代码505      *       * @param response      * @param text      * ajax返回的内容      *       */      public static void ajaxResponse(HttpServletResponse response, String text) {          try {              response.setContentType("text/html;charset=utf-8");              response.getWriter().write(text);          } catch (IOException e) {              e.printStackTrace();          }      }      /**      * <pre>      * 注意：ajax请求必须携带：jsonnp请求callback      *       * eg:      * $.getJSON(path + "ajax/news/comment.go?newsId=" + newsId + "&amp;content=" +content+ "&amp;callback=?", function(data) {      *   alert(data['val']);      * });      *       * </pre>      *       * @param response      * @param msg      */      public static void jsonnpResponse(HttpServletResponse response,              String callback, String msg) {          try {              response.setContentType("text/html;charset=utf-8");              response.getWriter().write(callback + "(" + msg + ")");          } catch (IOException e) {          }      }      /**      * 异常操作，需要浏览器地址返回上一步      *       * @param response      * @param alertMsg      *            弹出提示信息      */      public static void ajaxResponseRollBack(HttpServletResponse response,              String msg) {          try {              response.setContentType("text/html;charset=utf-8");              response.getWriter().write(                      "<script type='text/javascript'>alert('" + msg                              + "');window.history.back();</script>");          } catch (IOException e) {              // LogConsoleUtil.write(Common.class, "ajaxResponseRollBack()",              // e.getMessage());          }      }      // ajaxJSON返回      public static void ajaxJSONResponse(HttpServletResponse response,              String str, Object object) {          response.setContentType("text/json;charset=utf-8");          JSONObject json = new JSONObject();          json.put(str, object);          try {              response.getWriter().write(json.toString());          } catch (IOException e) {              e.printStackTrace();          }      }      public static void ajaxResponseAlert(HttpServletResponse response,              String msg) {          try {              response.setContentType("text/html;charset=utf-8");              response.getWriter().write(                      "<script type='text/javascript'>alert('" + msg                              + "');</script>");          } catch (IOException e) {              // LogConsoleUtil.write(Common.class, "ajaxResponseRollBack()",              // e.getMessage());          }      }      public static Integer StringToInteger(HttpServletRequest request,              String name) {          String obj = request.getParameter(name);          Integer result = -1;          if (obj != null) {              result = Integer.parseInt(obj);          }          return result;      }  }