Question

我有以下URI，它返回一个JSON响应我试图解析get请求的响应并访问steps数组，但它在第一步就停止了。

这是我的代码：

 public  void getRoute() throws Exception {

      String urlToRead="https://maps.googleapis.com/maps/api/directions/json?origin=41.43206,-81.38992&destination=Montreal&key=XXX";

      DefaultHttpClient httpClient = new DefaultHttpClient();
      HttpGet getRequest = new HttpGet(urlToRead);
      getRequest.addHeader("accept", "application/json");

      HttpResponse response = httpClient.execute(getRequest);
      String json = IOUtils.toString(response.getEntity().getContent());


      JSONArray array = new JSONArray(json);
      for (int i = 0; i < array.length(); i++) {
            JSONObject object = array.getJSONObject(i);
            System.out.println(object.getJSONArray("routes"));
        }
   }

但它抱怨：

Exception in thread "main" java.lang.NoClassDefFoundError: org/json/JSONArray

maven是：

    <groupId>com.googlecode.json-simple</groupId>
    <artifactId>json-simple</artifactId>
    <version>1.1.1</version>
</dependency>
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.1.1</version>
</dependency>

Answer 1

org/json/JSONArray

您编译了错误的库和/或导入了错误的类。

替换

<groupId>com.googlecode.json-simple</groupId>
<artifactId>json-simple</artifactId>
<version>1.1.1</version>

用

<groupId>org.json</groupId>
<artifactId>json</artifactId>
<version>20160810</version>

如何解析JSON REST响应 - NoClassDefFoundError：org / json / JSONArray

1 个答案: