分享程序员开发的那些事...
更新时间：2022-09-20 20:24:30
-----------参数-------------------------------------------------------------------
RequestParam来映射请求参数
required表示是否必须,默认为true
defaultValue请求参数的默认值
value为接收前台参数的参数名
------------示例------------------------------------------------------------------
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@RequestMapping(value = "/testRequestParam")
public String testRequestParam(@RequestParam(value="username")String name,
@RequestParam(value = "age",required = false,defaultValue = "0") int age){
System.out.println("username:"+un+",age,"+age);
return "success";
} |
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http://localhost:8080/sirdifoa/test/para?username=张三&age=30
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结果为：
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username:张三，age=30
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源码：
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/** * Whether the parameter is required.
* <p>Defaults to {@code true}, leading to an exception being thrown
* if the parameter is missing in the request. Switch this to
* {@code false} if you prefer a {@code null} value if the parameter is
* not present in the request.
* <p>Alternatively, provide a {@link #defaultValue}, which implicitly
* sets this flag to {@code false}.
*/
boolean required() default true;
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本文转自建波李 51CTO博客，原文链接：http://blog.51cto.com/jianboli/1983985，如需转载请自行联系原作者