lua-cjson库

鬼雨 · 发表于 2025-2-6 21:55:06

local cjson = require("cjson")

local json_str = cjson.encode({
name = "HGE引擎",
age = 18,
score = 99.5,
array = {1, 2, 3, 4, 5},
dict = {
      name = "hello",
      age = 20,
      score = 10000
}
})

print(json_str)  -- 输出 {"name":"HGE引擎","age":18,"score":99.5,"array":[1,2,3,4,5],"dict":{"name":"hello","age":20,"score":10000}}

local json_table = cjson.decode(json_str)

print(json_table.name)  -- 输出 HGE引擎
print(json_table.age)  -- 输出 18
print(json_table.score)  -- 输出 99.5
print(json_table.array[1])  -- 输出 1
print(json_table.dict.name)  -- 输出 hello

BLUE奇奇 · 发表于 2025-2-7 00:03:59

local cjson = require("cjson.safe") -- 使用安全版

local data = {
name = "HGE引擎",
age = 18,
score = 99.5,
array = {1, 2, 3, 4, 5},
dict = {
      name = "hello",
      age = 20,
      score = 10000
}
}

-- 编码并处理错误
local json_str, encode_err = cjson.encode(data)
if not json_str then
print("JSON Encode Error:", encode_err)
return
end
print(json_str)

-- 解码并处理错误
local json_table, decode_err = cjson.decode(json_str)
if not json_table then
print("JSON Decode Error:", decode_err)
return
end

-- 安全访问字段（假设字段可能存在）
print(json_table.name or "N/A")
print(json_table.age or 0)
print(json_table.score or 0)
print(json_table.array[1] or "No array data")
print(json_table.dict and json_table.dict.name or "No dict name")

鲤鱼精 · 发表于 2025-2-7 01:45:08