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在处理项目中Idea中无报错:
产生报错:
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Tue Feb 27 20:55:33 GMT+08:00 2024
There was an unexpected error (type=Internal Server Error, status=500).
Optional int parameter 'id' is present but cannot be translated into a null value due to being declared as a primitive type. Consider declaring it as object wrapper for the corresponding primitive type.
原因为:Spring Boot项目误将Integer类型写成int来进行传参
该项目具体的代码为:(错误示范)
- @RestController
- @RequestMapping("/param")
- public class ParamController {
-
- @RequestMapping("/m1")
- public String m1(String name){
- return "这是你的姓名:"+name;
- }
-
- @RequestMapping("/m2")
- public String m2(String name,int id){ //错误代码,需要将int更改为Integer(包装类)
- return "序列号为:"+ id +"这是你的姓名:"+name;
- }
- }
因此,正确的代码为:(正确示范)
- @RestController
- @RequestMapping("/param")
- public class ParamController {
-
- @RequestMapping("/m1")
- public String m1(String name){
- return "这是你的姓名:"+name;
- }
-
- @RequestMapping("/m2")
- public String m2(String name,Integer id){
- return "序列号为:"+ id +"这是你的姓名:"+name;
- }
- }
重启程序,在浏览器输入:localhost:8080/param/m2?id=5&name=zhangsan
运行结果为:
在Postman中测试为:
Bug解决!!
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