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您好我正在尝试从我的网站解析 json。我从 te httpresponse 获得的 jsonString 工作正常，但是当我尝试在 JSONObject 中解析它时，它会给出 NPE。这是现在正在测试的 json：

{ "galgjejson" :
        { "Nederlands" :  
                            { "length7" : [ 
                                                { "word" : "android" }, 
                                                { "word" : "camping" },
                                                { "word" : "koekjes" }
                                            ]
                            }, 
                            { "length8" : [
                                                { "word" : "androids" },    
                                                { "word" : "campings" },
                                                { "word" : "campings" },
                                                { "word" : "campings" },
                                                { "word" : "campings" },
                                                { "word" : "campings" },
                                                { "word" : "scheppen" }
                                            ]
                            },
                            { "length9" : [
                                                { "word" : "verslapen" },
                                                { "word" : "versleten" },
                                                { "word" : "verbrande" }
                                            ]
                            },
                            { "length10" : [    
                                                { "word" : "verslapend" },
                                                { "word" : "versletend" },
                                                { "word" : "verbranden" },
                                                { "word" : "verbranden" },
                                                { "word" : "verbranden" }
                                            ]
                            },
                            { "length11" : [
                                                { "word" : "verslapende" },
                                                { "word" : "versletende" }
                                            ]
                            },
                            { "length12" : [
                                                { "word" : "verslapenden" }
                                            ]
                            }
        },
        { "English" : 
                            { "length7" : [ 
                                                { "word" : "leavers" }, 
                                                { "word" : "shoping" },
                                                { "word" : "cooking" }
                                            ]
                            },
                            { "length8" : [
                                                { "word" : "stopping" },    
                                                { "word" : "sleeping" },
                                                { "word" : "starting" },
                                                { "word" : "starting" },
                                                { "word" : "starting" },
                                                { "word" : "starting" },
                                                { "word" : "starting" }
                                        ]
                            },
                            { "length9" : [
                                                { "word" : "somewordd" },
                                                { "word" : "somewordd" },
                                                { "word" : "somewordd" }
                                            ]
                            },
                            { "length10" : [
                                                { "word" : "someworddd" },
                                                { "word" : "someworddd" }
                                            ]
                            },
                            { "length11" : [
                                                { "word" : "somewordddd" },
                                                { "word" : "somewordddd" },
                                                { "word" : "somewordddd" },
                                                { "word" : "somewordddd" },
                                                { "word" : "somewordddd" }
                                            ]
                            },
                            { "length12" : [
                                                { "word" : "someworddddd" },
                                                { "word" : "someworddddd" },
                                                { "word" : "someworddddd" }
                                            ]
                            }

        }

}

我做的方法：

    public MikeyJSON(String jsonString) {
    Log.i("JSON", "jsonString: " + jsonString);
    try {
        JSONObject myObject = new JSONObject(jsonString);
        Log.i("JSON", "myObject_Object: " + myObject.toString());
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

public String getResult(String lang, String length, int wordPos) {
    String word = "0";  

    try {
        langObject = myObject.getJSONObject(lang);
        Log.i("JSON", "Language_Object " + langObject.toString());
        lengthObject = langObject.getJSONObject(length);
        Log.i("JSON", "wordlength_Object " + lengthObject.toString());
        wordArray = lengthObject.getJSONArray(length);
        Log.i("JSON", "wordlength_Object " + wordArray.toString());
        if(wordPos>wordArray.length()) {
            wordPos = 0;
        }
        for(i=0;i<wordArray.length();i++){
            word = wordArray.getJSONObject(wordPos).toString();
        }
        Log.i("JSON", "word_Object " + word);

    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    return word;        
}
}

我要检索的只是给定语言和长度的一个单词。这是我经过大量研究后所做的，但我只是不明白为什么它不起作用。如果我的 json 无效，请告诉我我做错了什么，因为我在 NPE 之前收到此错误：

03-18 09:17:40.052: W/System.err(1464): org.json.JSONException: Names must be strings,     
but {"length8":[{"word":"androids"},{"word":"campings"},{"word":"campings"},  
{"word":"campings"},{"word":"campings"},{"word":"campings"},{"word":"scheppen"}]} is of   
type org.json.JSONObject at character 514 of { "galgjejson" :
03-18 09:17:40.052: W/System.err(1464):             { "Nederlands" :  
03-18 09:17:40.052: W/System.err(1464):                                   { "length7" : [ 
03-18 09:17:40.052: W/System.err(1464):                                                     { "word" : "android" }, 
03-18 09:17:40.052: W/System.err(1464):                                                     { "word" : "camping" },
03-18 09:17:40.052: W/System.err(1464):                                                     { "word" : "koekjes" }
03-18 09:17:40.062: W/System.err(1464):                                                 ]
03-18 09:17:40.062: W/System.err(1464):                                 }, 
03-18 09:17:40.072: W/System.err(1464):                                 { "length8" : [
03-18 09:17:40.072: W/System.err(1464):                                                     { "word" : "androids" },    
03-18 09:17:40.072: W/System.err(1464):                                                     { "word" : "campings" },
03-18 09:17:40.072: W/System.err(1464):                                                     { "word" : "campings" },
03-18 09:17:40.072: W/System.err(1464):                                                     { "word" : "campings" },
03-18 09:17:40.072: W/System.err(1464):                                                     { "word" : "campings" },
03-18 09:17:40.072: W/System.err(1464):                                                     { "word" : "campings" },
03-18 09:17:40.072: W/System.err(1464):                                                     { "word" : "scheppen" }
03-18 09:17:40.072: W/System.err(1464):                                                 ]
03-18 09:17:40.082: W/System.err(1464):                                 },
03-18 09:17:40.092: W/System.err(1464):                                 { "length9" : [
03-18 09:17:40.092: W/System.err(1464):                                                     { "word" : "verslapen" },
03-18 09:17:40.092: W/System.err(1464):                                                     { "word" : "versleten" },
03-18 09:17:40.102: W/System.err(1464):                                                     { "word" : "verbrande" }
03-18 09:17:40.102: W/System.err(1464):                                                 ]
03-18 09:17:40.102: W/System.err(1464):                                 },
03-18 09:17:40.102: W/System.err(1464):                                  { "length10" : [   
03-18 09:17:40.102: W/System.err(1464):                                                     { "word" : "verslapend" },
03-18 09:17:40.102: W/System.err(1464):                                                     { "word" : "versletend" },
03-18 09:17:40.102: W/System.err(1464):                                                     { "word" : "verbranden" },
03-18 09:17:40.102: W/System.err(1464):                                                     { "word" : "verbranden" },
03-18 09:17:40.112: W/System.err(1464):                                                     { "word" : "verbranden" }
03-18 09:17:40.112: W/System.err(1464):                                                 ]
03-18 09:17:40.112: W/System.err(1464):                                 },
03-18 09:17:40.122: W/System.err(1464):                                 { "length11" : [
03-18 09:17:40.122: W/System.err(1464):                                                     { "word" : "verslapende" },
03-18 09:17:40.122: W/System.err(1464):                                                     { "word" : "versletende" }
03-18 09:17:40.122: W/System.err(1464):                                                 ]
03-18 09:17:40.132: W/System.err(1464):                                 },
03-18 09:17:40.132: W/System.err(1464):                                 { "length12" : [
03-18 09:17:40.132: W/System.err(1464):                                                     { "word" : "verslapenden" },
03-18 09:17:40.132: W/System.err(1464):                                                 ]
03-18 09:17:40.132: W/System.err(1464):                                 }
03-18 09:17:40.142: W/System.err(1464):             },
03-18 09:17:40.142: W/System.err(1464):             { "English" : 
03-18 09:17:40.142: W/System.err(1464):                                 { "length7" : [ 
03-18 09:17:40.152: W/System.err(1464):                                                     { "word" : "leavers" }, 
03-18 09:17:40.152: W/System.err(1464):                                                     { "word" : "shoping" },
03-18 09:17:40.152: W/System.err(1464):                                                     { "word" : "cooking" }
4

2 回答 2

2

您的 JSON 无效 - 这是正确的格式：

{ "Nederlands" :  [
                        { "length7" : [ 
                                            { "word" : "android" }, 
                                            { "word" : "camping" },
                                            { "word" : "koekjes" }
                                        ]
                        }, 
                        { "length8" : [
                                            { "word" : "androids" },    
                                            { "word" : "campings" },
                                            { "word" : "campings" },
                                            { "word" : "campings" },
                                            { "word" : "campings" },
                                            { "word" : "campings" },
                                            { "word" : "scheppen" }
                                        ]
                        }]
}

目前，“Nederlands”采用 JSONArray 格式（它包含多个 JSONObject），但您的响应缺少方括号。如果您将“Nederlands”解析为 JSONArray 并一一删除“length” JSONObjects，那么您应该能够使其工作

于 2013-03-18T10:38:23.037 回答
0

尝试如下将实体转换为字符串，然后使用 jason 对象

  response = httpclient.execute(httpget);

HttpEntity entity = response.getEntity();

String responseBody = EntityUtils.toString(entity);

  JSONObject obj = new JSONObject(responseBody);
于 2013-03-18T10:30:45.987 回答