使用 Qjson 解析 JSON 数据的方法

1. [代码]cpp代码     跳至 [1] [2] [3] [全屏预览]

01 QJson::Parser parser;
02 bool ok;
03
04 QVariantMap result = parser.parse (json, &ok).toMap();
05 if (!ok) {
06   qFatal("An error occurred during parsing");
07   exit (1);
08 }
09
10 qDebug() << "encoding:" << result["encoding"].toString();
11 qDebug() << "plugins:";
12
13 foreach (QVariant plugin, result["plug-ins"].toList()) {
14   qDebug() << "\t-" << plugin.toString();
15 }
16
17 QVariantMap nestedMap = result["indent"].toMap();
18 qDebug() << "length:" << nestedMap["length"].toInt();
19 qDebug() << "use_space:" << nestedMap["use_space"].toBool();

2. [代码]JSON数据     

1 {
2   "encoding" : "UTF-8",
3   "plug-ins" : [
4       "python",
5       "c++",
6       "ruby"
7       ],
8   "indent" : { "length" : 3, "use_space" : true }
9 }

3. [代码]输出结果     

1 encoding: "UTF-8"
2 plugins:
3    - "python"
4    - "c++"
5    - "ruby"
6  length: 3
7  use_space: true