springboot的@CrossOrigin注解解决细粒度的配置跨域

1、请求Controller

import java.util.HashMap;

import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;


@RestController
@RequestMapping(value = "/api", method = RequestMethod.POST)
public class ApiController {
        
    @CrossOrigin(origins = "http://172.16.71.27:8080")
    @RequestMapping(value = "/get")
    public HashMap<String, Object> get(@RequestParam String name) {
        HashMap<String, Object> map = new HashMap<String, Object>();
        map.put("title", "hello world");
        map.put("name", name);
        return map;
    }
}

2、js请求

<script>
        $(function() {
            $('#title').click(function() {
//                 alert('点击了');
                $.ajax({
                    url : "http://localhost:8081/api/get",
                    type : "POST",
                    data : {
                        name : "测试"
                    },
                    success : function(data, status, xhr) {
                        console.log(data);
                        alert(data.name);
                    }
                });
            });
        })
    </script>