Go语言中动态构建与序列化JSON结构的最佳实践

package main  import (     "encoding/json"     "fmt" )  func main() {     // 1. 创建一个顶层JSON对象，使用 map[string]interface{}     rootObject := make(map[string]interface{})      // 设置简单的键值对     rootObject["message"] = "Hello, dynamic JSON!"     rootObject["status"] = "success"      // 2. 创建一个JSON数组，使用 []interface{} 或特定类型的切片     // 示例：购物清单数组     groceries := []string{"Eggs", "Bread", "Milk"}     // 或者更通用的 []interface{}，允许混合类型     // groceries := []interface{}{"Eggs", "Bread", 1.5, true}     rootObject["groceries"] = groceries      // 3. 创建一个嵌套的JSON对象     // 示例：用户信息     userInfo := make(map[string]interface{})     userInfo["name"] = "Alice"     userInfo["age"] = 30     userInfo["isStudent"] = false     rootObject["user_info"] = userInfo      // 4. 创建更深层次的嵌套结构     // 示例：订单详情，包含地址信息     orderDetail := make(map[string]interface{})     orderDetail["order_id"] = "ORD12345"     orderDetail["total_amount"] = 99.99      address := make(map[string]interface{})     address["street"] = "123 Main St"     address["city"] = "Anytown"     address["zip_code"] = "10001"     orderDetail["shipping_address"] = address      // 订单中的商品列表     items := []map[string]interface{}{         {"item_name": "Laptop", "quantity": 1, "price": 1200.00},         {"item_name": "Mouse", "quantity": 2, "price": 25.00},     }     orderDetail["items"] = items      rootObject["order_detail"] = orderDetail      // 5. 序列化为JSON字符串     // 使用 json.MarshalIndent 可以美化输出，方便阅读     jsonData, err := json.MarshalIndent(rootObject, "", "  ")     if err != nil {         fmt.Printf("Error marshaling JSON: %vn", err)         return     }      fmt.Println(string(jsonData)) }

{   "groceries": [     "Eggs",     "Bread",     "Milk"   ],   "message": "Hello, dynamic JSON!",   "order_detail": {     "items": [       {         "item_name": "Laptop",         "price": 1200,         "quantity": 1       },       {         "item_name": "Mouse",         "price": 25,         "quantity": 2       }     ],     "order_id": "ORD12345",     "shipping_address": {       "city": "Anytown",       "street": "123 Main St",       "zip_code": "10001"     },     "total_amount": 99.99   },   "status": "success",   "user_info": {     "age": 30,     "isStudent": false,     "name": "Alice"   } }

go get github.com/Jeffail/gabs

package main  import (     "fmt"     "github.com/Jeffail/gabs" )  func main() {     // 1. 创建一个新的gabs JSON对象     jsonObj := gabs.New()      // 2. 使用 Set 方法设置嵌套值     // Set(value, path_parts...)     jsonObj.Set(10, "outer", "inner", "value")     jsonObj.Set("world", "hello") // 设置一个顶层键值对      // 3. 使用 SetP 方法通过路径字符串设置值     // SetP(value, path_string)     jsonObj.SetP(20, "outer.inner.value2")      // 4. 设置另一个嵌套对象     jsonObj.Set(30, "outer", "inner2", "value3")      // 5. 添加数组元素     // ArrayAppend(value, path_parts...)     jsonObj.ArrayAppend("Eggs", "groceries")     jsonObj.ArrayAppend("Bread", "groceries")     jsonObj.ArrayAppend("Milk", "groceries")      // 6. 获取并打印构建的JSON字符串     fmt.Println("--- Dynamically Built JSON ---")     fmt.Println(jsonObj.String())      // 7. 从现有JSON字符串解析并操作     fmt.Println("n--- Parsing and Modifying Existing JSON ---")     jsonString := `{"data":{"items":[{"id":1,"name":"Item A"},{"id":2,"name":"Item B"}]}}`     parsedObj, err := gabs.ParseJSON([]byte(jsonString))     if err != nil {         fmt.Printf("Error parsing JSON: %vn", err)         return     }      // 获取特定路径的值     itemAName := parsedObj.Path("data.items.0.name").Data().(string)     fmt.Printf("Item A Name: %sn", itemAName)      // 修改值     parsedObj.Set("New Item A", "data", "items", "0", "name")     fmt.Println("Modified JSON:")     fmt.Println(parsedObj.String())      // 添加新的数组元素     parsedObj.ArrayAppend(map[string]interface{}{"id": 3, "name": "Item C"}, "data", "items")     fmt.Println("JSON after adding new item:")     fmt.Println(parsedObj.String()) }

--- Dynamically Built JSON --- {"groceries":["Eggs","Bread","Milk"],"hello":"world","outer":{"inner":{"value":10,"value2":20},"inner2":{"value3":30}}}  --- Parsing and Modifying Existing JSON --- Item A Name: Item A Modified JSON: {"data":{"items":[{"id":1,"name":"New Item A"},{"id":2,"name":"Item B"}]}} JSON after adding new item: {"data":{"items":[{"id":1,"name":"New Item A"},{"id":2,"name":"Item B"},{"id":3,"name":"Item C"}]}}