后台Action
public void selectReadersById1(){
HttpServletRequest request=ServletActionContext.getRequest();
HttpServletResponse response= ServletActionContext.getResponse();
String id=request.getParameter("readerId");//接收jsp页面传的参数读者id
Readers readers=readersBiz.selectReaderById(Integer.parseInt(id));
if (readers!=null) {
//标红部分为精华,将对象转换为json格式
JSONArray jsonarray = JSONArray.fromObject(readers);
response.setContentType("text/html;charset=UTF-8");