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@PathVariable和@RequestParam的区别

 2 years ago
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@PathVariable和@RequestParam的区别

发布于 今天 14:48

简言之，@PathVariable用于接收在url路径中的参数,@RequestParam用于接收请求中的参数。
例如：

@RequestMapping("/hello/{id}")
public String getDetails(@PathVariable(value="id") String id,
@RequestParam(value="param1", required=true) String param1,
@RequestParam(value="param2", required=false) String param2) {
...
}

@RequestParam 支持下面四种参数
defaultValue 如果本次请求没有携带这个参数，或者参数为空，那么就会启用默认值
name 绑定本次参数的名称，要跟URL上面的一样
required 这个参数是不是必须的
value 跟name一样的作用，是name属性的一个别名

而@PathVariable 比@RequestParam少一个defaultValue


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