@RequestParam使用defaultValue属性设置默认值
注意设置必须是string类型的，框架自己会做转换
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@RequestParam(value = "page", required = false, defaultValue = "1") Integer page,@RequestParam(value = "size", required = false) Integer size, |
补充：@RequestParam注解的使用说明
自SpringMVC4.2之后，RequestParam内部有4个参数：
1、String name;
2、String value;
3、boolean required;
4、String defaultValue;
源码中name的别名是value，value的别名是name,
所以说name和value两个属性基本是等价的,都是获取从前台传入的参数
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
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@RequestMapping(value = "/testRequestParam") public String testRequestParam(@RequestParam(value="username")String un,@RequestParam(value = "age",required = false,defaultValue = "0") int age){ System.out.println("testRequestParam,username:"+un+",age,"+age); return "success"; } |
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原文链接：https://blog.csdn.net/y41992910/article/details/88314233
