SpringBoot中@GetMapping参数接收理解

当参数为简单对象时

@GetMapping("/example3")    public void example3(SubTest1 subTest1)        System.out.println(subTest1);//SubTest1content="测试内容"        //请求url：http://localhost:8888/example3?content=测试内容public class SubTest1     private String content;    public String getContent()         return content;        public void setContent(String content)         this.content = content;        @Override    public String toString()         return "SubTest1" +                "content="" + content + "\"" +                "";    

当参数的对象中嵌套着对象，对象中的属性为list和map时

@GetMapping("/example4")    public void example4(TestDto testDto)        System.out.println(testDto);//TestDtotitle="测试标题", subTest=SubTestids=[123, 456], map=k=value, subTest1=SubTest1content="测试内容"        //请求url:http://localhost:8888/example4?title=测试标题&subTest.ids[0]=123&subTest.ids[1]=456&subTest.map[k]=value&SubTest1.content=测试内容public class TestDto     private String title;    private SubTest subTest;    private SubTest1 subTest1;    public SubTest1 getSubTest1()         return subTest1;        public void setSubTest1(SubTest1 subTest1)         this.subTest1 = subTest1;        @Override    public String toString()         return "TestDto" +                "title="" + title + "\"" +                ", subTest=" + subTest +                ", subTest1=" + subTest1 +                "";        public String getTitle()         return title;        public void setTitle(String title)         this.title = title;        public SubTest getSubTest()         return subTest;        public void setSubTest(SubTest subTest)         this.subTest = subTest;    public class SubTest     private List ids;    private Map map;    public Map getMap()         return map;        public void setMap(Map map)         this.map = map;        public List getIds()         return ids;        public void setIds(List ids)         this.ids = ids;        @Override    public String toString()         return "SubTest" +                "ids=" + ids +                ", map=" + map +                "";    

//TODO:在直接用list作为参数的时候，程序会报错的；直接用map作为参数的时候，没办法获取到值，都是null，但是不会报错；不知道是姿势错误，还是本身不支持；

map参考：

SpringBoot用实体或Map接收Get请求传递过来的多个参数_缘醉丶莫求的博客-CSDN博客_getmapping接收多个参数@RestController@RequestMapping("/test")public class TestController @GetMapping("/f1") public void func1(@RequestParam(required = false)Map map) System.out.println(map); //name=新一, age=22 @GetMapping("/f2") pubhttps://blog.csdn.net/qq_37698425/article/details/107667913

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