SpringMVC学习笔记（二） -- 提交数据至后台controller

方法一：

controller.java

@RequestMapping("test/verification.do")  
    public String login(String username, String password){  
    	if (!"admin".equals(username) || !"admin".equals(password)) {
            return "loginError";
        }
    	else
    		return "loginSuccess";
    }

login.jsp

<form action="verification.do">
    UserName : <input name="username" id="username" type="text"/>
    PassWord : <input name="password" id="password" type="password"/>
    <button name="login">login</button><br/><br/>
</form>

方法二：

controller.java

@RequestMapping("test/verification2.do")  
    public String login2(@RequestParam(value="username")String username, String password){  
    	if (!"admin".equals(username) || !"admin".equals(password)) {
            return "loginError";
        }
    	else
    		return "loginSuccess";
    }

login.jsp

<form action="verification2.do">
    UserName : <input name="username" id="username" type="text"/>
    PassWord : <input name="password" id="password" type="password"/>
    <button name="login2">login2</button><br/><br/>
</form>

方法三：

controller.java

@RequestMapping("test/verification3.do")  
    public String login3(User user){  
    	String username = user.getUsername();
        String password = user.getPassword();
    	if (!"admin".equals(username) || !"admin".equals(password)) {
            return "loginError";
        }
    	else
    		return "loginSuccess";
    }

User.java

public class User {

	private String username;
	private String password;
	
	public String getUsername() {
		return username;
	}
	public void setUsername(String username) {
		this.username = username;
	}
	
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	
	
}

login.jsp

<form action="verification3.do">
    UserName : <input name="username" id="username" type="text"/>
    PassWord : <input name="password" id="password" type="password"/>
    <button name="login3">login3</button><br/><br/>
</form>