json_parse_compare

json_parse_compare.go

// 嵌套 JSON 解析耗时: 491.875µs
// 打平 JSON 解析耗时: 67.083µs

package main

import (
	"encoding/json"
	"fmt"
	"time"
)

// 嵌套结构体
type NestedCompany struct {
	Company struct {
		Name      string `json:"name"`
		Employees []struct {
			ID         int    `json:"id"`
			Name       string `json:"name"`
			Department struct {
				Name     string `json:"name"`
				Location string `json:"location"`
			} `json:"department"`
			Projects []struct {
				Name   string `json:"name"`
				Status string `json:"status"`
			} `json:"projects"`
		} `json:"employees"`
	} `json:"company"`
}

// 打平结构体
type FlatCompany struct {
	CompanyName string `json:"company_name"`
	Employees   []struct {
		EmployeeID        int    `json:"employee_id"`
		EmployeeName      string `json:"employee_name"`
		DepartmentName    string `json:"department_name"`
		DepartmentLocation string `json:"department_location"`
		Projects          []struct {
			ProjectName   string `json:"project_name"`
			ProjectStatus string `json:"project_status"`
		} `json:"projects"`
	} `json:"employees"`
}

func main() {
	nestedJSON := `{
		"company": {
			"name": "Tech Corp",
			"employees": [
				{
					"id": 1,
					"name": "Alice",
					"department": {
						"name": "Engineering",
						"location": "New York"
					},
					"projects": [
						{
							"name": "Project A",
							"status": "In Progress"
						},
						{
							"name": "Project B",
							"status": "Completed"
						}
					]
				},
				{
					"id": 2,
					"name": "Bob",
					"department": {
						"name": "Marketing",
						"location": "San Francisco"
					},
					"projects": [
						{
							"name": "Project C",
							"status": "In Progress"
						}
					]
				}
			]
		}
	}`

	flatJSON := `{
		"company_name": "Tech Corp",
		"employees": [
			{
				"employee_id": 1,
				"employee_name": "Alice",
				"department_name": "Engineering",
				"department_location": "New York",
				"projects": [
					{
						"project_name": "Project A",
						"project_status": "In Progress"
					},
					{
						"project_name": "Project B",
						"project_status": "Completed"
					}
				]
			},
			{
				"employee_id": 2,
				"employee_name": "Bob",
				"department_name": "Marketing",
				"department_location": "San Francisco",
				"projects": [
					{
						"project_name": "Project C",
						"project_status": "In Progress"
					}
				]
			}
		]
	}`

	// 测试嵌套 JSON 解析
	start := time.Now()
	var nestedCompany NestedCompany
	_ = json.Unmarshal([]byte(nestedJSON), &nestedCompany)
	fmt.Printf("嵌套 JSON 解析耗时: %v\n", time.Since(start))

	// 测试打平 JSON 解析
	start = time.Now()
	var flatCompany FlatCompany
	_ = json.Unmarshal([]byte(flatJSON), &flatCompany)
	fmt.Printf("打平 JSON 解析耗时: %v\n", time.Since(start))
}