本文整理了Java中org.eclipse.californium.core.coap.OptionSet.hasIfNoneMatch()方法的一些代码示例，展示了OptionSet.hasIfNoneMatch()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。OptionSet.hasIfNoneMatch()方法的具体详情如下：
包路径：org.eclipse.californium.core.coap.OptionSet
类名称：OptionSet
方法名：hasIfNoneMatch

OptionSet.hasIfNoneMatch介绍

[英]Checks if the If-None-Match option is present.
[中]检查是否存在“如果不匹配”选项。

代码示例

代码示例来源：origin: eclipse/californium

@Override
public void handlePUT(CoapExchange exchange) {
  // Check: Type, Code, has Content-Type
  
  if (exchange.getRequestOptions().hasIfNoneMatch()) {
    exchange.respond(PRECONDITION_FAILED);
  } else {
    exchange.respond(CHANGED);
  }
}

代码示例来源：origin: eclipse/californium

if (etag_list != null) for (byte[] value:etag_list)
  options.add(new Option(OptionNumberRegistry.ETAG, value));
if (hasIfNoneMatch())
  options.add(new Option(OptionNumberRegistry.IF_NONE_MATCH));
if (hasUriPort())

代码示例来源：origin: org.eclipse.californium/californium-core

if (etag_list != null) for (byte[] value:etag_list)
  options.add(new Option(OptionNumberRegistry.ETAG, value));
if (hasIfNoneMatch())
  options.add(new Option(OptionNumberRegistry.IF_NONE_MATCH));
if (hasUriPort())

代码示例来源：origin: eclipse/californium

@Override
public void handlePUT(CoapExchange exchange) {
  if (data!=null && exchange.getRequestOptions().hasIfNoneMatch()) {
    exchange.respond(PRECONDITION_FAILED);
    
    // automatically reset
    data = null;
  } else {
    if (exchange.getRequestOptions().hasContentFormat()) {
      storeData(exchange.getRequestPayload(), exchange.getRequestOptions().getContentFormat());
      exchange.respond(CREATED);
    } else {
      exchange.respond(BAD_REQUEST, "Content-Format not set");
    }
  }
}

代码示例来源：origin: eclipse/californium

@Override
public void handlePUT(CoapExchange exchange) {
  
  if (exchange.getRequestOptions().isIfMatch(etag)) {
    if (exchange.getRequestOptions().hasContentFormat()) {
      storeData(exchange.getRequestPayload(), exchange.getRequestOptions().getContentFormat());
      exchange.setETag(etag.clone());
      exchange.respond(CHANGED);
    } else {
      exchange.respond(BAD_REQUEST, "Content-Format not set");
    }
  } else if (exchange.getRequestOptions().hasIfNoneMatch() && data==null) {
    storeData(exchange.getRequestPayload(), exchange.getRequestOptions().getContentFormat());
    exchange.respond(CREATED);
  } else {
    exchange.respond(PRECONDITION_FAILED);
    // automatically change now
    storeData(null, UNDEFINED);
  }
}