cocos2dx libjson

libjson下载 http://sourceforge.net/projects/libjson/

下载解压后改名成libjson，用到的是根目录下面的JSONOptions.h、libjson.h和_internal\Source下的文件。

导入头文件

#include "libjson.h"

如果是debug模式下，改下面那个参数

把#define JSON_DEBUG注释打开，c++编码把#define JSON_LIBRARY注释

如果是release模式则注释#define JSON_DEBUG

cocos2dx libjson-LMLPHP

解析json

void readlibjson()

{

    /*{

        "RootA":"value in parent node",

            "childNode":[

        {

            "childA":"string value c1",

                "childB":"dsf c1"

        },

        {

            "childA":"string value c2",

                "childB":"dsf c2"

            }

            ]

    }*/

    unsigned long size;

    char* str = (char *)CCFileUtils::sharedFileUtils()->getFileData("testlibjson.json","r",&size);

    if (libjson::is_valid(str) == false)

    {

        delete str;

        str = NULL;

        CCLog("parse fail!");

        return ;

    }

    JSONNode rn = libjson::parse(str);

    delete str;

    str = NULL;

    CCLog("%s:%s",rn[].name().c_str(),rn[].as_string().c_str());

    int tmp = rn.size();

    CCLog("%d",tmp);

    for (int i = ; i<rn[].size(); i++)

    {

        JSONNode temp = rn[][i];

        for (int j = ; j< temp.size(); j++)

        {

            CCLog("%s:%s",temp[j].name().c_str(),temp[j].as_string().c_str());

        }

    }

    parseJSON(rn);//递归解析json的结构

}

//递归解析json的结构

void parseJSON(const JSONNode & n){

    JSONNode::const_iterator i = n.begin();

    while (i != n.end()){

        // recursively call ourselves to dig deeper into the tree

        if (i -> type() == JSON_ARRAY || i -> type() == JSON_NODE){

            parseJSON(*i);

        }

        if(i->name()!="" && i->as_string()!="")

        CCLog("%s:%s",i->name().c_str(),i->as_string().c_str());

        //increment the iterator

        ++i;

    }

}

输出：

RootA:value in parent node
2
childA:string value c1
childB:dsf c1
childA:string value c2
childB:dsf c2
RootA:value in parent node
childA:string value c1
childB:dsf c1
childA:string value c2
childB:dsf c2

创建json

void writelibjson()

{

    JSONNode n(JSON_NODE);

    n.push_back(JSONNode("RootA","value in parent node"));

    JSONNode c(JSON_ARRAY);

    c.set_name("childNode");

    JSONNode c1(JSON_NODE),c2(JSON_NODE);

    c1.push_back(JSONNode("childA","string value c1"));

    c1.push_back(JSONNode("childB","dsf c1"));

    c2.push_back(JSONNode("childA","string value c2"));

    c2.push_back(JSONNode("childB","dsf c2"));

    c.push_back(c1);

    c.push_back(c2);

    n.push_back(c);

    CCLog("==%s",n.write_formatted().c_str());

    //下面是输出到保存文件

    unsigned long size;

    char filePath[] = {'/0'};

    memset(filePath,,sizeof(filePath));

    strcat(filePath,CCFileUtils::sharedFileUtils()->getWritablePath().c_str());

    strcat(filePath,"testlibjson.json");

    FILE* file = fopen(filePath,"w+");

    fwrite(n.write_formatted().c_str(),n.write_formatted().size(),,file);

    fclose(file);

}

输出：

=={
"RootA" : "value in parent node",
"childNode" : [
{
"childA" : "string value c1",
"childB" : "dsf c1"
},
{
"childA" : "string value c2",
"childB" : "dsf c2"
}
]
}

DSF

cocos2dx libjson