there is an add function, ajax post request submission parameter returned status=200, but the code=0 display operation failed, and then the data is not in data, but in config.data

    add(){
        let data = {
          systemDeptName: "test",
          systemDeptParentId: 546515268,
          systemDeptSort: 1,
          systemDeptRemark: ""
        }
        this.$http.post("/api/admin/safe/dept/add",data).then((res)=>{
            console.log(res)
        })
    },  
    

ask for advice