[移动开发]okhttp异常closed， response.body().string() 转成对象

使用 OkHttp 返回信息时，将 response.body().string() 转成对象，结果直接闪退

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                //response.body().string() 获得服务器返回的数据
                Log.d(TAG, "onResponse: " + response.body().string());
                try{
                    JSONArray jsonArray=new JSONArray(response.body().string());
                    for(int i=0;i<jsonArray.length();i++)
                    {
                        JSONObject jsonObject=jsonArray.getJSONObject(i);
                        Integer id=jsonObject.getInt("id");
                        String projectName=jsonObject.getString("projectName");
                        String managementUnit=jsonObject.getString("managementUnit");
                        String address=jsonObject.getString("address");
                        String startTime=jsonObject.getString("startTime");
                        String endTime=jsonObject.getString("endTime");
                        projectList.add(new Project(id,projectName,managementUnit,address,startTime,endTime));
                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }

报错如下：

09-05 14:42:17.606: E/AndroidRuntime(28219): Caused by: java.lang.IllegalStateException: closed
09-05 14:42:17.606: E/AndroidRuntime(28219):    at okhttp3.internal.http.Http1xStream$ChunkedSource.read(Http1xStream.java:414)
09-05 14:42:17.606: E/AndroidRuntime(28219):    at okio.Buffer.writeAll(Buffer.java:993)
09-05 14:42:17.606: E/AndroidRuntime(28219):    at okio.RealBufferedSource.readByteArray(RealBufferedSource.java:106)
09-05 14:42:17.606: E/AndroidRuntime(28219):    at okhttp3.ResponseBody.bytes(ResponseBody.java:128)
09-05 14:42:17.606: E/AndroidRuntime(28219):    at okhttp3.ResponseBody.string(ResponseBody.java:154)
09-05 14:42:17.606: E/AndroidRuntime(28219):    at com.example.nettest.MainActivity$MyAsyncTask.doInBackground(MainActivity.java:78)
09-05 14:42:17.606: E/AndroidRuntime(28219):    at com.example.nettest.MainActivity$MyAsyncTask.doInBackground(MainActivity.java:1)
09-05 14:42:17.606: E/AndroidRuntime(28219):    at android.os.AsyncTask$2.call(AsyncTask.java:292)
09-05 14:42:17.606: E/AndroidRuntime(28219):    at java.util.concurrent.FutureTask.run(FutureTask.java:237)
09-05 14:42:17.606: E/AndroidRuntime(28219):    ... 4 more

这个错误是由于==body().string()==调用了多次导致的，==string()==仅可调用一次。