程序包 org.springframework.core

类 LocalVariableTableParameterNameDiscoverer

  • 所有已实现的接口:
    ParameterNameDiscoverer
    public class LocalVariableTableParameterNameDiscoverer
extends Object
implements ParameterNameDiscoverer
    Implementation of ParameterNameDiscoverer that uses the LocalVariableTable information in the method attributes to discover parameter names. Returns null if the class file was compiled without debug information.

    Uses ObjectWeb's ASM library for analyzing class files. Each discoverer instance caches the ASM discovered information for each introspected Class, in a thread-safe manner. It is recommended to reuse ParameterNameDiscoverer instances as far as possible.

    从以下版本开始:
    2.0
    作者:
    Adrian Colyer, Costin Leau, Juergen Hoeller, Chris Beams, Sam Brannen

    • 方法详细资料

      • getParameterNames

        @Nullable
public String[] getParameterNames​(Method method)
        从接口复制的说明: ParameterNameDiscoverer
        Return parameter names for a method, or null if they cannot be determined.

        Individual entries in the array may be null if parameter names are only available for some parameters of the given method but not for others. However, it is recommended to use stub parameter names instead wherever feasible.

        指定者:
        getParameterNames 在接口中 ParameterNameDiscoverer
        参数:
        method - the method to find parameter names for
        返回:
        an array of parameter names if the names can be resolved, or null if they cannot

      • getParameterNames

        @Nullable
public String[] getParameterNames​(Constructor<?> ctor)
        从接口复制的说明: ParameterNameDiscoverer
        Return parameter names for a constructor, or null if they cannot be determined.

        Individual entries in the array may be null if parameter names are only available for some parameters of the given constructor but not for others. However, it is recommended to use stub parameter names instead wherever feasible.

        指定者:
        getParameterNames 在接口中 ParameterNameDiscoverer
        参数:
        ctor - the constructor to find parameter names for
        返回:
        an array of parameter names if the names can be resolved, or null if they cannot