SpringMVC-RESTFul

RESTFul

一、基础概念

二、增删改查

配置web.xml，使可以使用PUT，DELETE

<!--    配置请求方法-->
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

1.查询全部用户信息 （GET）

@RequestMapping(value = "/user",method = RequestMethod.GET)
    public String getAllUser()
    {
        System.out.println("获取全部用户信息");
        return "target";
    }

2.根据id查询用户信息

@RequestMapping(value = "/user/{id}",method = RequestMethod.GET)
    public String getUserById()
    {
        System.out.println("根据ID获取用户信息");
        return "target";
    }

3.添加用户（POST）

@RequestMapping(value = "/user",method = RequestMethod.POST)
    public String addUser(String username,String password)
    {
        System.out.println(username+","+password);
        return "target";
    }

4.修改用户 （PUT）

@RequestMapping(value = "/user",method = RequestMethod.PUT)
    public String updateUser(String username,String password)
    {
        System.out.println("修改信息");
        return "target";
    }

<form th:action="@{/user}" method="post">
    <input type="hidden" name="_method" value="PUT">
    用户名<input name="username" type="text"><br>
    密码<input type="password" name="password"> <br>
    <input type="submit" value="修改">
</form>

注意添加这个后 </input type=“hidden” name=“_method” value=“PUT”>,这样请求方法才变成PUT

5.删除用户 （DELETE）

 @RequestMapping(value = "/user/{id}",method = RequestMethod.DELETE)
    public String deleteUser()
    {
        System.out.println("删除信息");
        return "target";
    }

<form th:action="@{/user/1}" method="post">
    <input type="hidden" name="_method" value="DELETE">
    用户名<input name="username" type="text"><br>
    密码<input type="password" name="password"> <br>
    <input type="submit" value="删除">
</form>

注意 </input type=“hidden” name=“_method” value=“DELETE”>,这样请求方法才变成DELETE