springmvc乱码及restful

1 乱码的解决--通过过滤器来解决：springmvc中提供characterEncodingFilter

 post乱码

<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>/*</url-pattern>
  </filter-mapping>

如果是get方式乱码

a 修改tomcat的配置

b 自己定义乱码解决的过滤器

2 restful风格的url

有点：轻量级，安全，效率高

@RequestMapping("/{id}/{uid}/delete")
    public String hello(@PathVariable int uid,@PathVariable int id){
        System.out.println("id:"+id);
        System.out.println("uid:"+uid);
        return "/index.jsp";
        //
    }

3 同一个controller通过参数来到达不同的处理方法--不重要

提交url：http://localhost:8080/SpringMVC_Restful07/?method=add

处理代码：

//http://localhost:8080/SpringMVC_Restful07/?method=add   old way
    @RequestMapping(params="method=add",method=RequestMethod.GET)
    public String add(){
        System.out.println("add");
        return "redirect:/index.jsp";
    }
public String update(){
        System.out.println("update");
        return "redirect:/index.jsp";
    }
    public String delete(){
        System.out.println("delete");
        return "redirect:/index.jsp";
    }