解析class的工具类
发布时间:2020-12-15 03:18:49 所属栏目:Java 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 import java.lang.reflect.Field;import java.lang.reflect.Method;import java.lang.reflect.Modifier;import java.lang.reflect.Proxy;import java.
以下代码由PHP站长网 52php.cn收集自互联网 现在PHP站长网小编把它分享给大家,仅供参考 import java.lang.reflect.Field; import java.lang.reflect.Method; import java.lang.reflect.Modifier; import java.lang.reflect.Proxy; import java.util.ArrayList; import java.util.List; public class AnalyticClassInfo { private static String getModifier(int modifier) { String result = ""; switch (modifier) { case Modifier.PRIVATE: result = "private"; break; case Modifier.PUBLIC: result = "public"; break; case Modifier.PROTECTED: result = "protected"; break; case Modifier.ABSTRACT: result = "abstract"; break; case Modifier.FINAL: result = "final"; break; case Modifier.NATIVE: result = "native"; break; case Modifier.STATIC: result = "static"; break; case Modifier.SYNCHRONIZED: result = "synchronized"; break; case Modifier.STRICT: result = "strict"; break; case Modifier.TRANSIENT: result = "transient"; break; case Modifier.VOLATILE: result = "volatile"; break; case Modifier.INTERFACE: result = "interface"; break; default: break; } return result; } private static void printClassDefinition(Class clz) { String clzModifier = getModifier(clz.getModifiers()); if (clzModifier != null && !clzModifier.equals("")) { clzModifier += " "; } String superClz = ""; if(clz.getSuperclass()!=null) { superClz = clz.getSuperclass().getName(); if (superClz != null && !superClz.equals("")) { superClz = " extends " + superClz; } } Class[] interfaces = clz.getInterfaces(); String inters = ""; for (int i = 0; i < interfaces.length; i++) { if (i == 0) { inters += " implements "; } inters += interfaces[i].getName(); } System.out.println(clzModifier + clz.getName() + " " + superClz + " " + inters); System.out.println("{"); System.out.println("fields:"); Field[] fields = clz.getDeclaredFields(); for (int i = 0; i < fields.length; i++) { String modifier = getModifier(fields[i].getModifiers()); if (modifier != null && !modifier.equals("")) { modifier = modifier + " "; } String fieldName = fields[i].getName(); String fieldType = fields[i].getType().getName(); System.out.println(" " + modifier + fieldType + " " + fieldName + ";"); } System.out.println("methods:"); Method[] methods = clz.getDeclaredMethods(); for (int i = 0; i < methods.length; i++) { Method method = methods[i]; String modifier = getModifier(method.getModifiers()); if (modifier != null && !modifier.equals("")) { modifier = modifier + " "; } String methodName = method.getName(); Class returnClz = method.getReturnType(); String retrunType = returnClz.getName(); Class[] clzs = method.getParameterTypes(); String paraList = "("; for (int j = 0; j < clzs.length; j++) { paraList += clzs[j].getName(); if (j != clzs.length - 1) { paraList += ","; } } paraList += ")"; clzs = method.getExceptionTypes(); String exceptions = ""; for (int j = 0; j < clzs.length; j++) { if (j == 0) { exceptions += "throws "; } exceptions += clzs[j].getName(); if (j != clzs.length - 1) { exceptions += ","; } } exceptions += ";"; String methodPrototype = modifier + retrunType + " " + methodName + paraList + exceptions; System.out.println(" " + methodPrototype); } System.out.println("}"); } /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub // printClassDefinition(List.class); // printClassDefinition(Proxy.class); printClassDefinition(ArrayList.class); } } 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |