本文整理了Java中feign.Util.emptyValueOf()方法的一些代码示例，展示了Util.emptyValueOf()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Util.emptyValueOf()方法的具体详情如下：
包路径：feign.Util
类名称：Util
方法名：emptyValueOf

Util.emptyValueOf介绍

[英]This returns well known empty values for well-known java types. This returns null for types not in the following list.

• [Bb]oolean
• byte[]
• Collection
• Iterator
• List
• Map
• Set

When Feign.Builder#decode404(), you'll need to teach decoders a default empty value for a type. This method cheaply supports typical types by only looking at the raw type (vs type hierarchy). Decorate for sophistication.
[中]这将返回已知java类型的已知空值。对于不在以下列表中的类型，这将返回null。
*[Bb]oolean
*字节[]
*收藏
*迭代器
*名单
*地图
*设定
假装的时候。在Builder#decode404（）中，您需要将类型的默认空值教给解码器。这种方法只需查看原始类型（vs类型层次结构），就可以廉价地支持典型类型。装饰得更精致。

代码示例

代码示例来源：origin: com.netflix.feign/feign-jackson

@Override
 public Object decode(Response response, Type type) throws IOException {
  if (response.status() == 404) return Util.emptyValueOf(type);
  if (response.body() == null) return null;
  Reader reader = response.body().asReader();
  if (!reader.markSupported()) {
   reader = new BufferedReader(reader, 1);
  }
  try {
   // Read the first byte to see if we have any data
   reader.mark(1);
   if (reader.read() == -1) {
    return null; // Eagerly returning null avoids "No content to map due to end-of-input"
   }
   reader.reset();
   return mapper.readValue(reader, mapper.constructType(type));
  } catch (RuntimeJsonMappingException e) {
   if (e.getCause() != null && e.getCause() instanceof IOException) {
    throw IOException.class.cast(e.getCause());
   }
   throw e;
  }
 }
}

代码示例来源：origin: com.netflix.feign/feign-core

@Override
 public Object decode(Response response, Type type) throws IOException {
  if (response.status() == 404) return Util.emptyValueOf(type);
  if (response.body() == null) return null;
  if (byte[].class.equals(type)) {
   return Util.toByteArray(response.body().asInputStream());
  }
  return super.decode(response, type);
 }
}

代码示例来源：origin: io.github.openfeign/feign-jaxb

@Override
public Object decode(Response response, Type type) throws IOException {
 if (response.status() == 404 || response.status() == 204)
  return Util.emptyValueOf(type);
 if (response.body() == null)
  return null;

代码示例来源：origin: io.github.openfeign/feign-gson

@Override
 public Object decode(Response response, Type type) throws IOException {
  if (response.status() == 404)
   return Util.emptyValueOf(type);
  if (response.body() == null)
   return null;
  Reader reader = response.body().asReader();
  try {
   return gson.fromJson(reader, type);
  } catch (JsonIOException e) {
   if (e.getCause() != null && e.getCause() instanceof IOException) {
    throw IOException.class.cast(e.getCause());
   }
   throw e;
  } finally {
   ensureClosed(reader);
  }
 }
}