Action往js中传递Json（text，object，List）

如果在ajax中写了回调类型‘json’或者 GetJson（）方式发送，在js中不用 var u = eval('('+user+')');方法转换--字符串String s = "s";HttpServletResponse response = getResponse();response.setContentType("text/plain;charset=UTF-8");response.getWriter().write(s);response.getWriter().flush();案列(需要在js中返回参数写“text”，js中直接回调函数取出使用)：String s = "s";HttpServletResponse response = getResponse();response.setContentType("text/plain;charset=UTF-8");response.getWriter().write(s);response.getWriter().flush();--对象JSONArray jsonArray=JSONArray.fromObject(Person);HttpServletResponse response = getResponse();response.getWriter().write(jsonArray.toString());response.getWriter().flush();案例(js中直接回调函数取出使用，对象（obj）.属性获取参数值)：Person person = new Person();person.setAge("25");JSONObject  jsonObject = JSONObject.fromObject(person);HttpServletResponse response = getResponse();response.getWriter().write(jsonObject.toString());response.getWriter().flush();--集合（两种）JSONArray jsonArray=JSONArray.fromCollection(ListDto);HttpServletResponse response = getResponse();response.getWriter().write(jsonArray.toString());response.getWriter().flush();案例一：（js中使用获取值需要obj[0].age）：List<Person> personList = new ArrayList<Person>();Person person = new Person();person.setAge("15");personList.add(person);JSONArray jsonArray=JSONArray.fromCollection(personList);HttpServletResponse response = getResponse();response.getWriter().write(jsonArray.toString());response.getWriter().flush();案例二：（js中使用获取值需要obj.data[0].age）：List<Person> personList = new ArrayList<Person>();Person person = new Person();person.setAccno("15");personList.add(person);JSONObject jsonObject = new JSONObject();jsonObject.put("data", JSONArray.fromObject(personList));HttpServletResponse response = getResponse();response.getWriter().write(jsonObject.toString());response.getWriter().flush();----不对之处，欢迎指出。共同进步！