Ajax的工具类AjaxUtils，使用struts返回Json类型详解编程语言

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();   
        }   
    }   
   
    /**  
     * 
  
     * 注意：ajax请求必须携带：jsonnp请求callback  
     *   
     * eg:  
     * $.getJSON(path + "ajax/news/comment.go?newsId=" + newsId + "&content=" +content+ "&callback=?", function(data) {  
     *   alert(data['val']);  
     * });  
     *   
     * 
     *
     * @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;
    }   
}

                                                        
原创文章，作者：ItWorker，如若转载，请注明出处：https://blog.ytso.com/tech/pnotes/10203.html