std::stringjson_file =writer.write(root); ofstream ofs; ofs.open("test1.json"); assert(ofs.is_open()); ofs<<json_file;return0; } 结果:[{"age":100,"name":"hello world"}] json对数组的解析还支持STL的风格。即 Json::Value::M
1boolret =false;23//Json::FastWriter writer_ob;4//std::string jsonStr = writer_ob.write(root);56std::stringjsonStr =root.toStyledString();78std::ofstream fob(filepath, std::ios::trunc | std::ios::out);910if(false!=fob.is_open())11{12fob.write(jsonStr.c_str(), jsonStr.len...
open("package_new.json",ios::out); // ios::out|ios::app为追加 Json::Value root; Json::Value data; root["action"] = "run"; data["number"] = 1; root["data"] = data; // 嵌套 Json::StreamWriterBuilder builder; const std::string json_file = Json::writeString(builder, root);...
Json::FastWriter writer; root["name"] = "tocy"; root["salary"] = 100; root["msg"] = "work hard"; Json::Value files; files[0] = "1.ts"; files[1] = "2.txt"; root["files"] = files; string json_file = writer.write(root); cout << "demo write json object ===\n"; ...
write(out_string.c_str(), out_string.size()); } out.close(); return true; } 建立索引 index.hpp 的基本结构: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 namespace yjz_index { struct DocInfo { std::string title; std::string content; std::string url; uint64_t doc_id; }; ...
std::string out = root.toStyledString(); // 输出无格式json字符串 Json::FastWriter writer; std::string out2 = writer.write(root); 1. 2. 3. 4. 5. 二. 使用Boost property_tree解析json property_tree可以解析xml,json,ini,info等格式的数据,用property_tree解析这几种格式使用方法很相似。
读写文件是JSON处理的常见场景，JSONCPP提供了`write()`和`read()`方法。`write()`用于将JSON对象输出到文件，如`write_file("filename.json", j);`。反向操作则通过`read_file()`从文件读取JSON对象，如`nlohmann::json j; read_file("filename.json", j);`。通过以上解析，开发者可以充分...
write(node);//序列化为不带格式的字符串 /* 注:toStyledString的序列化时带格式的字符换,如上面的str = node.toStyledString()输出的是: { "age" : 10, "name" : "yang" } 转化为字符字符串为:"{\n\"age\":10, \n\"name\":\"yang\"\n}" str2 = writer.write(node);序列化的字符串就...
std::string out = root.toStyledString(); //将Json对象序列化为字符串 std::cout << out << std::endl; 向文件中插入Json对象 void WriteJsonData(const char* filename) { Json::Reader reader; Json::Value root; ifstream is; is.open(filename, std::ios::binary); ...
intfile_size = root["files"].size(); for(inti = 0; i < file_size; ++i) root["files"][i]["exifs"] = arrayObj;//插入原json中 std::stringout= root.toStyledString(); //输出无格式json字符串 Json::FastWriter writer; std::stringstrWrite = writer.write(root); ...