我有一个简单的Person类:简单的方法参数
package simpleApp.entities;
public class Person {
private String name;
private String secondname;
public void setSecondname(String cognome) {
this.secondname = cognome;
}
public String getSecondname() {
return secondname;
}
public void setName(String nome) {
this.name = nome;
}
public String getName() {
return name;
}
}
和一个简单的html页面:
<html>
<body>
<form action="/simpleApp/person/" method="POST">
name: <input type="text" name="name"><br>
second name: <input type="text" name="secondname"><br>
<input type="submit">
</form>
</body>
</html>
和一个简单的servlet:
public class Person extends HttpServlet {
private static final long serialVersionUID = 1L;
public Person() {
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//LOOK HERE:
simpleApp.entities.Person p = new simpleApp.entities.Person();
p.setName(request.getParameterValues("name")[0]);
p.setSecondname(request.getParameterValues("secondname")[0]);
response.sendRedirect("/simpleApp/index.html");
}
}
有没有办法使参数设置自动化?
这样神奇的东西像
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
simpleApp.entities.Person p = new simpleApp.entities.Person();
Magic.justSetEverything(p, request);
// NOT NEEDED ANYMORE!!! MUAHAHAHA more time for coffee
// p.setName(request.getParameterValues("name")[0]);
// p.setSecondname(request.getParameterValues("secondname")[0]);
response.sendRedirect("/simpleApp/index.html");
}
这当然可以通过反射API来完成,但问题在于它没有比它的价值更麻烦,除非您经常遇到这种情况或者需要设置大量属性。另外请记住,您可能想要进行一些验证(“是给定的参数?”“是该字段有效的值?”) – johusman 2011-02-23 20:17:34
为了您的理智,请将您的servlet重命名为'PersonServlet'或其他东西。 – Jeremy 2011-02-23 20:17:44
谢谢johusman,我希望已经有东西了。验证和其他逻辑稍后将在类的实例上完成。 – Simon 2011-02-23 20:18:28