-----------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;
|
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
