有谁知道 Intellij Idea 13(或更早版本,但我怀疑它是否可用)中 Eclipse 4.4 的存储有关方法参数的信息(可通过反射使用)编译器属性的等效项?
编辑:
这个链接展示了如何使用maven来做到这一点,但我仍然想知道它是如何在Idea中完成的使用 M2 Maven 构建运行 Eclipse 会忽略“存储方法参数名称”定义
- Go to edit Settings (Projects setting actually) Alt+Ctrl+S
- 搜索 Java 编译器
- Add the "-parameters" option in the compiler window.
This should do the trick
NOTE: I tried it with JDK 8 version 1.8.0 and it DIDN'T WORK. JDK 8 version 1.8.0_05 works.
See also
- 反射 API 的增强
- 构造函数/方法参数元数据可通过反射获得
JDK 8
- 参数名称反射
尝试这个来验证。我是从文章里复制过来的。
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.Parameter;
import static java.lang.System.out;
/**
* Uses JDK 8 Parameter class to demonstrate metadata related to the parameters
* of the methods and constructors of the provided class (includes private,
* protected, and public methods, but does not include methods inherited from
* parent classes; those classes should be individually submitted).
*
* @author Dustin
*/
public class Main {
private static void displayParametersMetadata(final String className) {
try {
final Class clazz = Class.forName(className);
// Get all class's declared methods (does not get inherited methods)
final Method[] declaredMethods = clazz.getDeclaredMethods();
for (final Method method : declaredMethods) {
writeHeader(
"Method " + method.toGenericString()
+ " has " + method.getParameterCount() + " Parameters:");
int parameterCount = 0;
final Parameter[] parameters = method.getParameters();
for (final Parameter parameter : parameters) {
out.println(
"\targ" + parameterCount++ + ": "
+ (parameter.isNamePresent() ? parameter.getName() : "Parameter Name not provided,")
+ (isParameterFinal(parameter) ? " IS " : " is NOT ")
+ "final, type " + parameter.getType().getCanonicalName()
+ ", and parameterized type of " + parameter.getParameterizedType()
+ " and " + (parameter.isVarArgs() ? "IS " : "is NOT ")
+ "variable.");
}
}
} catch (ClassNotFoundException cnfEx) {
out.println("Unable to find class " + className);
}
}
private static void writeHeader(final String headerText) {
out.println("\n==========================================================");
out.println("= " + headerText);
out.println("==========================================================");
}
/**
* Indicate whether provided Parameter is final.
*
* @param parameter Parameter to be tested for 'final' modifier.
* @return {@code true} if provided Parameter is 'final'.
*/
private static boolean isParameterFinal(final Parameter parameter) {
return Modifier.isFinal(parameter.getModifiers());
}
public static void main(final String[] arguments) {
displayParametersMetadata("TestProperties");
}
}
和测试类:
import java.util.List;
/**
* Created with IntelliJ IDEA.
* User: zpontikas
* Date: 7/10/2014
* Time: 17:02
*/
public class TestProperties {
public String getSomeStringValue(String thisIsAProperty) {
return thisIsAProperty;
}
public static List<Integer> getSomeLists(final List<Integer> anotherProName) {
return anotherProName;
}
public void manyProperties(final String onePropertyString,final int anotherIntProperty, final boolean thisIsBool) {
}
}
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