spring3 @RequestPrama 400异常

spring3 @RequestPrama 400错误

http://blog.csdn.net/hellostory/article/details/7519358

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错误描述：

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1. @RequestMapping(value?=?"/index")??
2. ????public?String?index(@RequestParam(value?=?"action",?required?=?false)??
3. ????String?action,?@RequestParam(value?=?"notIncludeTypeId",?required?=?false)??
4. ????int?notIncludeTypeId){??
5. ????//?....?省略代码??
6. }??

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? ? ? 当可选参数“notIncludeTypeId”为空时，系统出现如下错误：?

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1. Optional?int?parameter?'notIncludeTypeId'?is?not?present???
2. but?cannot?be?translated?into?a?null?value?due?to?being?declared?as?a?primitive?type.???
3. Consider?declaring?it?as?object?wrapper?for?the?corresponding?primitive?type.??

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错误原因：

? ? 可选参数“notIncludeTypeId”不存在时，Spring默认将其赋值为null，但由于notIncludeTypeId已定于为基本类型int，所赋值失败！

解决方法：

? ? “Consider declaring it as object wrapper for the corresponding primitive type.”建议使用包装类型代替基本类型，如使用“Integer”代替“int”

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null 和?