Java 8 java 8中基于索引的for循环转换

是否可以将下面给出的for循环转换为Java8代码

 Object[] args = pjp.getArgs();
    MethodSignature methodSignature = (MethodSignature) pjp.getStaticPart()
            .getSignature();
    Method method = methodSignature.getMethod();
    Annotation[][] parameterAnnotations = method.getParameterAnnotations();
    StringBuilder methodArgs = new StringBuilder();
    for (int argIndex = 0; argIndex < args.length; argIndex++) {
        for (Annotation annotation : parameterAnnotations[argIndex]) {
            if ((annotation instanceof RequestParam) || (annotation instanceof PathVariable) || (annotation instanceof RequestHeader)) {
                methodArgs.append(args[argIndex] + "|");
            } else if ((annotation instanceof RequestBody)) {
                methodArgs.append(mapper.writeValueAsString(args[argIndex]) + "|");
            }
        }
    }

---

您必须打开一个

InsStream

来迭代

args

索引，然后创建每个

arg

的

SimpleEntry

，以及相应的

注释（根据您的代码），然后您可以应用您的业务逻辑

IntStream.range(0, args.length)
        .mapToObj(argIndex -> new AbstractMap.SimpleEntry<>(args[argIndex], parameterAnnotations[argIndex]))
        .flatMap(objectSimpleEntry -> Arrays.stream(objectSimpleEntry.getValue()).map(annotation -> new AbstractMap.SimpleEntry<>(objectSimpleEntry.getKey(), annotation)))
        .forEach(objectAnnotationSimpleEntry -> {
          Annotation annotation = objectAnnotationSimpleEntry.getValue();
          Object arg = objectAnnotationSimpleEntry.getKey();
          if ((annotation instanceof RequestParam) || (annotation instanceof PathVariable) || (annotation instanceof RequestHeader)) {
            methodArgs.append(arg + "|");
          } else if ((annotation instanceof RequestBody)) {
            methodArgs.append(arg + "|");
          }
        });

IntStream.range（0，参数长度）
.mapToObj（argIndex->new AbstractMap.SimpleEntry（args[argIndex]，parameternotations[argIndex]））
.flatMap（objectSimpleEntry->Array.stream（objectSimpleEntry.getValue（））.map（注释->新建AbstractMap.SimpleEntry（objectSimpleEntry.getKey（），注释）））
.forEach（objectAnnotationSimpleEntry->{
Annotation=objectAnnotationSimpleEntry.getValue（）；
Object arg=objectAnnotationSimpleEntry.getKey（）；
if（（RequestParam的注释实例）| |（PathVariable的注释实例）| |（RequestHeader的注释实例））{
方法args.append（arg+“|”）；
}else if（（RequestBody的注释实例））{
方法args.append（arg+“|”）；
}
});
是的，这是可能的。让我们看看你迄今为止都尝试了什么？拉文德拉·兰瓦拉完成了
IntStream.range(0, args.length)
        .mapToObj(argIndex -> new AbstractMap.SimpleEntry<>(args[argIndex], parameterAnnotations[argIndex]))
        .flatMap(objectSimpleEntry -> Arrays.stream(objectSimpleEntry.getValue()).map(annotation -> new AbstractMap.SimpleEntry<>(objectSimpleEntry.getKey(), annotation)))
        .forEach(objectAnnotationSimpleEntry -> {
          Annotation annotation = objectAnnotationSimpleEntry.getValue();
          Object arg = objectAnnotationSimpleEntry.getKey();
          if ((annotation instanceof RequestParam) || (annotation instanceof PathVariable) || (annotation instanceof RequestHeader)) {
            methodArgs.append(arg + "|");
          } else if ((annotation instanceof RequestBody)) {
            methodArgs.append(arg + "|");
          }
        });