springMVC之乱码及Restful

1、 乱码的解决

Post乱码

Springmvc提供CharacterEncodingFilter(web.xml)

    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>*.do</url-pattern>
    </filter-mapping>

2、 restful风格的url

       优点：轻量级、安全、效率高。

    @RequestMapping("/userAdd/{id}")
    public String add(@PathVariable("id") int userId) {
        System.out.println(userId);
        // 不加"/"会找WebRoot下对应传入参数名的文件夹下的页面
//        return "index.jsp";
        // 跳根目录
        return "/springmvc/userAdd/index.jsp";
    }

    @RequestMapping(value="/user", method=RequestMethod.POST)
    public String user(User user, Model model) {
        System.out.println(user);
        model.addAttribute("user", user);
        return "/index.jsp";
    }