如何将下面这样的 json 字符串转换为字典？

Question

我有一个 json 这样的：

`{
   "_j_msgid" = 2404589949;
    aps =     {
        alert = "E\U519c\U901a";
        badge = 26;
        sound = "happy.caf";
   };
   data = "{title=\U901a\U77e5\U516c\U544a, pushId=15, pushType=NOTICECOL}";  // this line is my want.
}`

但是，我用我的方法将 json 字符串取到 dictionary:

+ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString {
    if (jsonString == nil) {
        return nil;
    }

NSData *jsonData = [jsonString dataUsingEncoding:NSUTF8StringEncoding];
NSError *err;
NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData
                                                    options:NSJSONReadingMutableContainers
                                                      error:&err];
if(err) {
    NSLog(@"json fail：%@",err);
    return nil;
}
return dic;
}

我失败了，得到一个零字典。

所以，我将data的=转换为:，然后使用+ (NSDictionary *)dictionaryWithJsonString:(NSString *)jsonString将转换后的json字符串转换为字典，然后我又失败了

是否有一些有用的方法可以将这种 json 字符串转换为字典？

Answer 1

你的json字符串有误，请检查一次，应该是这样的

{
"_j_msgid" : 2404589949,
"aps" :     {
    "alert" : "E\U519c\U901a",
    "badge" : 26,
    "sound" : "happy.caf"
},
"data" : "{title=\U901a%5CU77e5\U516c%5CU544a, pushId=15, pushType=NOTICECOL}"}

Answer 2

我尝试了这个解决方案，我明白了。

你的 json 是 above.That 是 json response.Whatever 当你将 JSON 转换为字符串时它应该是

NSString *strJson = @"{\"_j_msgid\":\"2404589949\",\"aps\" : {\"alert\" :\"EU519cU901a\",\"badge\":\"26\",\"sound\":\"happy.caf\"},\"data\":{\"title\" :\"U901aU77e5U516cU544a\",\"pushId\":\"15\",\"pushType\":\"NOTICECOL\"}}";

当你转换成字符串时你应该添加

\"key\":\"value\"

如果是字典

{\"key\":\"value\"}

如果字典在数组中

[\"response\":{\"key\":\"value\"}]

然后编码

NSError *jsonError;
NSString *strJson = @"{\"_j_msgid\":\"2404589949\",\"aps\" : {\"alert\" :\"EU519cU901a\",\"badge\":\"26\",\"sound\":\"happy.caf\"},\"data\":{\"title\" :\"U901aU77e5U516cU544a\",\"pushId\":\"15\",\"pushType\":\"NOTICECOL\"}}";
NSData *objectData = [strJson dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:objectData
                                                     options:NSJSONReadingMutableContainers
                                                       error:&jsonError];

NSLog(@"json is - %@",json);

打印出来的结果是

json is - {
 "_j_msgid" = 2404589949;
 aps =     {
    alert = EU519cU901a;
    badge = 26;
    sound = "happy.caf";
 };
 data =     {
    pushId = 15;
    pushType = NOTICECOL;
    title = U901aU77e5U516cU544a;
 };
}

如何将下面这样的 json 字符串转换为字典？

How to take a json string like this below to transform to dictionary?

json

nsdictionary

nsstring

ios