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spring 常用标签-wx5d123804636f7的博客
source link: https://blog.51cto.com/14418066/2463951
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1:@RequestParam作用：吧请求中指定名称的参数给控制器中的形参赋值属性：required:请求参数中是否必须提供此参数。默认值:true，表示必须提供条件，否则报错，改为false，不会报错当没有接到值不会报错，会显示null2：@RequestBody作用:用于获取请求体内容。直接使用得到是key=value&key=value..结构数据get请求不适用属性:require
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