SpringMVC-02注解/REST风格

客官°小女子只卖身不卖艺 2024-02-19 13:34 63阅读 0赞

**@RequestMapping:**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MzU0OTU3OA_size_16_color_FFFFFF_t_70][]

常用方法：method=RequestMethod.GET/method=RequestMethod.POST

RequestMapping中限定请求参数映射：params

@RequestMapping(value="/testParams",params={"email","tel!=110"},method=RequestMethod.GET)
     public String testParams()
     {
       System.out.println("=====testParams");
       return "ok";
     }

RequestMapping中限定请求头映射：headers

@RequestMapping(value="/testHeaders",headers={"Host=localhost:8081"},method=RequestMethod.GET)
     public String testHeaders()
     { 
       System.out.println("=====testHeaders");
       return "ok";
     }

URL路径映射  
1. HTTP协议查看  
2.普通URL映射  
3. Ant风格URL映射(? 匹配一个字符 \* 匹配零个或多个字符 \*\* 匹配零个或多个路径)

@RequestMapping(value="/testAntStyle**/**/q",method=RequestMethod.GET)
    @RequestMapping(value="/testAntStyle??",method=RequestMethod.GET)
    @RequestMapping(value="/testAntStyle*",method=RequestMethod.GET)
     public String testAntStyle()
     {
      System.out.println("=====testAntStyle");
       return "ok";
     }

4.@PathVariable占位符URL映射  
@RequestMapping(value="/users/\{userId\}")  
@RequestMapping(value=“/users/\{userId\}/create”)  
@RequestMapping(value="/users/\{userId\}/topics/\{topicId\}")  
@PathVariable可以提取URI模板模式中的\{×××\}中的×××变量。

**REST风格:**

（1）每一个URI代表一种资源；  
（2）客户端和服务器之间，传递这种资源的某种表现层；  
（3）客户端通过四个HTTP动词，对服务器端资源进行操作，实现"表现层状态转化"。

增-POST
        method=RequestMethod.POST
    删-DELETE
        method=RequestMethod.DELETE
    改-PUT
        method=RequestMethod.PUT
    查-GET
        method=RequestMethod.GET

Restful适配  
web.xml里配置过滤器 HiddenHttpMethodFilter

<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>

\_method的隐藏域

Delete
    
    <form action="${pageContext.request.contextPath}/order/38" method="post">
     <input type="hidden" name="_method" value="DELETE">
     <input type="submit" value="Delete_commit">
    </form>
    
    Put
    
    <form action="${pageContext.request.contextPath}/order/38" method="post">
     <input type="hidden" name="_method" value="PUT">
     <input type="submit" value="Update_commit">
    </form>

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