/**
* Inspects the target class. Exceptions will be logged and a maker map returned
* to indicate the lack of debug information.
*/
private Map<Member, String[]> inspectClass(Class<?> clazz) {
InputStream is = clazz.getResourceAsStream(ClassUtils.getClassFileName(clazz));
if (is == null) {
// We couldn‘t load the class file, which is not fatal as it
// simply means this method of discovering parameter names won‘t work.
if (logger.isDebugEnabled()) {
logger.debug("Cannot find ‘.class‘ file for class [" + clazz
+ "] - unable to determine constructors/methods parameter names");
}
return NO_DEBUG_INFO_MAP;
}
try {
ClassReader classReader = new ClassReader(is);
Map<Member, String[]> map = new ConcurrentHashMap<Member, String[]>(32);
classReader.accept(new ParameterNameDiscoveringVisitor(clazz, map), 0);
return map;
}
catch (IOException ex) {
if (logger.isDebugEnabled()) {
logger.debug("Exception thrown while reading ‘.class‘ file for class [" + clazz +
"] - unable to determine constructors/methods parameter names", ex);
}
}
catch (IllegalArgumentException ex) {
if (logger.isDebugEnabled()) {
logger.debug("ASM ClassReader failed to parse class file [" + clazz +
"], probably due to a new Java class file version that isn‘t supported yet " +
"- unable to determine constructors/methods parameter names", ex);
}
}
finally {
try {
is.close();
}
catch (IOException ex) {
// ignore
}
}
return NO_DEBUG_INFO_MAP;
}本文出自 “程序猿De香蕉” 博客，请务必保留此出处http://qiyubin.blog.51cto.com/3642349/1642064
用ASM吧,获取方法参数名称！参见SPRING源代码LocalVariableTableParameterNameDiscoverer
原文地址：http://qiyubin.blog.51cto.com/3642349/1642064
