解决乱码

• 通过过滤器解决乱码

  • spring mvc提供了CharacterEncodingFilter来解决乱码问题

    • 只能解决post的乱码问题

      <filter>
          <filter-name>encoding</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>encoding</filter-name>
          <url-pattern>*.do</url-pattern>
      </filter-mapping>

  • get方式乱码

    • 修改tomcat配置
    • 自定义乱码过滤器

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• Restful风格的url

  • 优点: 轻量级，安全，效率高

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

• 通过同一个Controller选择不同处理方法，一般不会使用

  @Controller
  @RequestMapping("/hello2")
  public class Hello2Controller {
      @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";
      }
  }

  • url中需要添加?method=add