- 其实在Spring4MVC中还可以更加方便的取参
- 以前我们通过public String loginMethod(@RequestParam("username") String u, @RequestParam("password") String p, Model model) {}取得url中username的参数值
核心代码如下：
`
package controller;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class UserinfoController {
@RequestMapping(value = "login")
public String loginMethod(String username, String password, Model model) {
System.out.println("username"+username+":"+"password"+password);
if (username.equals("a") && password.equals("aa")) {
model.addAttribute("usernameKey", username);
return "ok.jsp";
} else {
return "no.jsp";
}
}
}
`
index.jsp
`<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
</head>
<body>
post:
<br />
<form action="login.spring" method="post">
username:<input type="text" name="username">
<br />
password:<input type="text" name="password"><br />
<input type="submit" value="submit"><br />
</form>
<br />
get:
<br />
<form action="login.spring" method="get">
username:<input type="text" name="username">
<br />
password:<input type="text" name="password"><br />
<input type="submit" value="submit"><br />
</form>
</body>
</html>
`
url中同名的参数将要自动传给控制层方法中同名的参数，并且不在需要**@RequestParam("username") **注解了。
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