jsoncpp代码实例

 1 #include <string>
 2 #include <json/json.h>
 3 
 4 void readJson();
 5 void writeJson();
 6 
 7 int main(int argc, char** argv) {
 8     readJson();
 9     writeJson();
10     return 0;
11 }
12 
13 void readJson() {
14     using namespace std;
15     std::string strValue = "{\"name\":\"json\",\"array\":[{\"cpp\":\"jsoncpp\"},{\"java\":\"jsoninjava\"},{\"php\":\"support\"}]}";
16 
17     Json::Reader reader;
18     Json::Value value;
19 
20     if (reader.parse(strValue, value))
21     {
22         std::string out = value["name"].asString();
23         std::cout << out << std::endl;
24         const Json::Value arrayObj = value["array"];
25         for (unsigned int i = 0; i < arrayObj.size(); i++)
26         {
27             if (!arrayObj[i].isMember("cpp")) 
28                 continue;
29             out = arrayObj[i]["cpp"].asString();
30             std::cout << out;
31             if (i != (arrayObj.size() - 1))
32                 std::cout << std::endl;
33         }
34     }
35 }
36 
37 void writeJson() {
38     using namespace std;
39 
40     Json::Value root;
41     Json::Value arrayObj;
42     Json::Value item;
43 
44     item["cpp"] = "jsoncpp";
45     item["java"] = "jsoninjava";
46     item["php"] = "support";
47     arrayObj.append(item);
48 
49     root["name"] = "json";
50     root["array"] = arrayObj;
51 
52     root.toStyledString();
53     std::string out = root.toStyledString();
54     std::cout << out << std::endl;
55 }

 1 json
 2 jsoncpp
 3 {
 4    "array" : [
 5       {
 6          "cpp" : "jsoncpp",
 7          "java" : "jsoninjava",
 8          "php" : "support"
 9       }
10    ],
11    "name" : "json"
12 }