在jni的cpp中使用json，百度了一下，大多都是下面这个库，但是和之前的文档有点出入了，记录一下。
jsoncpp库地址：
https://github.com/open-source-parsers/jsoncpp
添加jsoncpp库
在cpp目录下创建一个jsoncpp目录下载jsoncpp项目把src\lib_json文件夹下的文件都拉到项目的cpp/jsoncpp文件夹下(除CMakeLists.txt)再把include\json文件夹下的文件都拉到项目的cpp/jsoncpp文件夹下然后在项目CMakeLists.txt文件中的add_library 中添加这些文件即可
add_library( # Sets the name of the library.
myJNI
# Sets the library as a shared library.
SHARED
# Provides a relative path to your source file(s).
native-lib.cpp
jsoncpp/json_tool.h
jsoncpp/json_reader.cpp
jsoncpp/json_valueiterator.inl
jsoncpp/json_value.cpp
jsoncpp/json_writer.cpp
jsoncpp/assertions.h
jsoncpp/allocator.h
jsoncpp/config.h
jsoncpp/json_features.h
jsoncpp/forwards.h
jsoncpp/json.h
jsoncpp/reader.h
jsoncpp/value.h
jsoncpp/version.h
jsoncpp/writer.h
)
使用
Json
::Value user
;
user
["id"] = 1;
user
["name"] = "eric";
user
["age"] = "30";
for (int i
= 0; i
< 3; i
++) {
std
::string temp
= std
::to_string(i
);
user
["list"][i
]["ids" + temp
] = "10" + temp
;
}
return env
->NewStringUTF(user
.toStyledString().c_str());
Json
::Value root
;
Json
::Reader reader
;
if (reader
.parse(json
, root
)) {
root
["id"].asInt();
root
["name"].asCString();
root
["list"][0]["ids0"].asCString();
}
