用action执行方法

来源：互联网发布：joo yeon seo韩国编辑：程序博客网时间：2024/06/11 04:27

用dom4j解析xml标签，并将标签属性与文本内容添加进集合，创建方法，传入action查找对应的id，从何获取类路径与方法，利用反射执行方法

FrameUtil.java

public class FrameUtil {List<Student> list = new ArrayList();public static void main(String[] args) throws Exception {FrameUtil f = new FrameUtil();f.executeMethod("2", f.jie());}private List<Student> jie() throws Exception {// TODO Auto-generated method stubElement root = new SAXReader().read(new File("./src/studentInfo.xml")).getRootElement();Iterator<Element> it = root.elementIterator();while (it.hasNext()) {Student stu = new Student();Element elStu = it.next();stu.setId(elStu.attribute("id").getValue());stu.setClassName(elStu.attribute("className").getValue());stu.setMethod(elStu.attribute("method").getValue());Iterator<Element> it2 = elStu.elementIterator();while (it2.hasNext()) {Element zi = it2.next();if ("name".equals(zi.getName())) {stu.setName(zi.getTextTrim());}if ("college".equals(zi.getName())) {stu.setCollage(zi.getTextTrim());}if ("telephone".equals(zi.getName())) {stu.setTelephone(zi.getTextTrim());}if ("notes".equals(zi.getName())) {stu.setNotes(zi.getTextTrim());}}list.add(stu);}for (Student s : list) {System.out.println(s.getId() + " , " + s.getClassName() + " , "+ s.getMethod() + " , " + s.getName() + " , "+ s.getCollage() + " , " + s.getTelephone() + " , "+ s.getNotes());}return list;}public Object executeMethod(String action, List<Student> para)throws Exception {String cname = "";String method = "";for (Student stu : list) {if (stu.getId().equals(action))// 判断id和action相同{// 获取类名和方法cname = stu.getClassName();method = stu.getMethod();break;// 跳出循环}}Class<?> cl = Class.forName(cname);// 加载类名Object obj = cl.newInstance();// 获取对象Method me = cl.getDeclaredMethod(method, List.class);// 获取方法对象Object objReturn = me.invoke(obj, para);// 执行方法return objReturn;}}

UserDao1.java

public class UserDao1 {public void add() {System.out.println("正在调用add方法");}public String select(List<Object> list) {System.out.println("正在调用select方法");for (Object obj : list) {System.out.println(obj);}return "ok";}}

阅读全文

0 0