srping mvc学习

HOME 控制器

package ghy.webapp.myapp;

import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;

/**
 * Handles requests for the application home page.
 */
@Controller
public class HomeController {
	
	private static final Logger logger = LoggerFactory.getLogger(HomeController.class);
	
	/**
	 * Simply selects the home view to render by returning its name.
	 */
	@RequestMapping(value = "/", method = RequestMethod.GET)
	public String home(Locale locale, Model model) {
		logger.info("Welcome home! The client locale is {}.", locale);
		
		Date date = new Date();
		DateFormat dateFormat = DateFormat.getDateTimeInstance(DateFormat.LONG, DateFormat.LONG, locale);
		
		String formattedDate = dateFormat.format(date);
		
		model.addAttribute("serverTime", formattedDate );
		
		return "home";
	}
	
	@RequestMapping(value = "/Two", method = RequestMethod.GET)
	public String Two(
			int id,Model model
			) {
		logger.info("two");
		
		System.out.println("hello2 action:"+id);  
        model.addAttribute("name", "huangjie");  
        //这个只有值没有键的情况下,使用Object的类型作为key,String-->string  
        model.addAttribute("ok");  
		
		
		
		return "Two";
	}
	
}

Two.jsp 视图

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<html>  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
<title>欢迎</title>  
</head>  
<body>  
<h2>Hello World!</h2>  
  
<form action="login">  
    用户名：<input id="username" name="username" type="text" value='${name}'></input><br>  
    密  码：<input id="username" name="password" type="password"></input><br>  
    <input type="submit">  
</form>  
<span>当前IP：<%=request.getRemoteAddr() %></span>  
</body>  
</html>

Two控制器

package ghy.webapp.myapp;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller  
public class TwoController {  
      
    @RequestMapping("login") //用来处理前台的login请求  
    private @ResponseBody String hello(  
            @RequestParam(value = "username", required = false)String username,  
            @RequestParam(value = "password", required = false)String password  
            ){  
        return "Hello "+username+",Your password is: "+password;  
          
    }  
 
}

环境：sts +tomcat

运行 http://localhost:8080/myapp 执行home控制器，http://localhost:8080/myapp/Two?id=3525是调用 Two控制器传参id

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