我正在尝试使用 Retrofit 和 GSON 解析从 API 返回的字符串数组:
响应通常如下所示(案例 1):
["Scan finished, scan information embedded in this object", "https://www.virustotal.com/url/297c349554bdc7e2f09a85be309f08cb2f16a9174068bd5bc6e298ed90a5eed9/analysis/1485313628/", 8, 64]
这是特定情况下的响应(案例 2):
["Scan request successfully queued, come back later for the report", "https://www.virustotal.com/url/d06ed0b4b29aab735ee7b85c5c0af98fd4d983edcc597afe60e4c4ac2e25ea08/analysis/1485847248/", null, null]
在这种情况下(案例 2),我从 Retrofit/GSON 收到错误:
W/System.err: java.lang.IllegalStateException: Expected BEGIN_ARRAY but was STRING at line 1 column 2 path $
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at com.google.gson.stream.JsonReader.beginArray(JsonReader.java:350)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:80)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at com.google.gson.internal.bind.CollectionTypeAdapterFactory$Adapter.read(CollectionTypeAdapterFactory.java:61)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:37)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at retrofit2.converter.gson.GsonResponseBodyConverter.convert(GsonResponseBodyConverter.java:25)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at retrofit2.ServiceMethod.toResponse(ServiceMethod.java:117)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at retrofit2.OkHttpCall.parseResponse(OkHttpCall.java:211)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at retrofit2.OkHttpCall$1.onResponse(OkHttpCall.java:106)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at okhttp3.RealCall$AsyncCall.execute(RealCall.java:133)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
01-31 13:42:41.922 15746-15746/com.ssrij.testapp W/System.err: at java.lang.Thread.run(Thread.java:761)
我这样调用 API:
Call<ArrayList<String>> scanResults = myAPI.getScanResults(id);
scanResults.enqueue(...)
在正常情况下(情况 1),数组填充得很好,但在这种情况下(情况 2),它会抛出错误。
我认为这是因为空值。我尝试使用自定义类型适配器,但它没有解决问题,在 GsonBuilder 上设置 serializeNulls() 也没有解决问题。
有谁知道解决方案吗?
编辑:经过更多调试后,由于某种原因,服务器似乎在案例 2 中返回一个字符串而不是字符串数组。当我手动访问链接时,我确实看到了字符串数组,但由于某种原因,响应是字符串。