java - 解析 JSON 响应？

Question

我在解析 http post 请求的 JSON 响应时遇到问题。这里Json解析有什么问题？

    HttpClient client = new DefaultHttpClient();

    HttpPost post = new HttpPost("url");

    post.addHeader("Content-Type", "application/json");
    HttpResponse response = client.execute(post);

    System.out.println(response.getStatusLine());

    JsonReader reader = new JsonReader(new InputStreamReader(response.getEntity().getContent()));
    Gson gson = new Gson();
    textConv text = gson.fromJson(reader.toString(), textConv.class);
    System.out.println(text.text);

输出

HTTP/1.1 200 OK
com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:226)
    at com.google.gson.Gson.fromJson(Gson.java:927)
    at com.google.gson.Gson.fromJson(Gson.java:892)
    at com.google.gson.Gson.fromJson(Gson.java:841)
    at com.google.gson.Gson.fromJson(Gson.java:813)
    at gsonTest.main(gsonTest.java:44)
Caused by: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1 path $
    at com.google.gson.stream.JsonReader.beginObject(JsonReader.java:385)
    at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$Adapter.read(ReflectiveTypeAdapterFactory.java:215)
    ... 5 more

Answer 1

尝试在字符串对象数组中创建“文本”字段:

String[] text

您的响应有数组，并且您尝试将其解析为 String 对象:

{"code": 200, "lang": "en-ru", "text": ["жизнь"]}

另请参阅here例如解析数组。