com.xiongyingqi.util.EntityHelper Maven / Gradle / Ivy
/**
* WebSocket
*/
package com.xiongyingqi.util;
import java.lang.reflect.*;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.*;
/**
* 实体帮助类
*
* @author 瑛琪
* @version 2013-8-7 下午12:09:13
*/
public class EntityHelper {
public static final Map, Method[]> getMethodCache = new HashMap, Method[]>();
public static final Map, Class> baseTypePackagingMap = new HashMap, Class>();
static {
baseTypePackagingMap.put(int.class, Integer.class);
baseTypePackagingMap.put(long.class, Long.class);
baseTypePackagingMap.put(double.class, Double.class);
baseTypePackagingMap.put(float.class, Float.class);
baseTypePackagingMap.put(boolean.class, Boolean.class);
baseTypePackagingMap.put(char.class, Character.class);
baseTypePackagingMap.put(byte.class, Byte.class);
baseTypePackagingMap.put(short.class, Short.class);
baseTypePackagingMap.put(Integer.class, Integer.class);
baseTypePackagingMap.put(Long.class, Long.class);
baseTypePackagingMap.put(Double.class, Double.class);
baseTypePackagingMap.put(Float.class, Float.class);
baseTypePackagingMap.put(Boolean.class, Boolean.class);
baseTypePackagingMap.put(Character.class, Character.class);
baseTypePackagingMap.put(Byte.class, Byte.class);
baseTypePackagingMap.put(Short.class, Short.class);
// baseTypePackagingMap.put(String.class, String.class);
}
// com.kingray.hibernate.domain.KrUser@d0b4b2f[userId=,userName=aaa,userPassword=bbb,
// a={b, c}]
public static final Object LOCK = new Object();
private static Map, Object> singletonMap = new HashMap, Object>();
/**
* 获取该class所表示的父类的泛型数组
* 例如如下定义中：
*
*
* class GenericSuperClass<T> {
* }
*
* class GenericSubClass<String> {
* public void doGetSuperGenericTypes() {
* EntityHelper.getGenericTypes(getClass());
* }
* }
*
* 只用GenericSubClass中的方法调用才有效果
* 2014年2月25日 下午5:45:49
*
* @param clazz
* @return
*/
public static Type[] getGenericTypes(Class clazz) {
Type mySuperClass = clazz.getGenericSuperclass();
System.out.println(mySuperClass);
System.out.println(mySuperClass.getClass());
Type[] types = ((ParameterizedType) mySuperClass).getActualTypeArguments();
for (int i = 0; i < types.length; i++) {
Type type = types[i];
System.out.println(type);
}
return types;
}
/**
* 获取Class类的所有字段名
* 2013-10-21 下午5:19:48
*
* @param clazz
* @return
*/
public static String[] getClassFields(Class clazz) {
Field[] fields = clazz.getDeclaredFields();
int length = fields.length;
String[] fieldNames = new String[length];
for (int i = 0; i < length; i++) {
Field field = fields[i];
fieldNames[i] = field.getName();
}
return fieldNames;
}
/**
* 获取Class类的所有非静态字段名
* 2013-10-21 下午5:19:48
*
* @param clazz
* @return
*/
public static Collection getUnstaticClassFieldNameCollection(Class clazz) {
if (clazz == null) {
throw new NullPointerException("传入的clazz为空对象！");
}
Field[] fields = clazz.getDeclaredFields();
int length = fields.length;
Collection fieldNames = new ArrayList();
for (int i = 0; i < length; i++) {
Field field = fields[i];
if (!Modifier.isStatic(field.getModifiers())) {
fieldNames.add(field.getName());
}
}
return fieldNames;
}
/**
* 获取Class类的所有非静态字段名
* 2013-10-21 下午5:19:48
*
* @param clazz
* @return
*/
public static String[] getUnstaticClassFields(Class clazz) {
return getUnstaticClassFieldNameCollection(clazz).toArray(new String[]{});
}
/**
* 获取Class类的所有字段名
* 2013-10-21 下午5:19:48
*
* @param clazz
* @return
*/
public static String[] getClassSimpleFields(Class clazz) {
Field[] fields = clazz.getDeclaredFields();
int length = fields.length;
Collection fieldCollection = new ArrayList();
for (int i = 0; i < length; i++) {
Field field = fields[i];
if (isSimpleType(field)) {
fieldCollection.add(field);
}
}
String[] fieldNames = new String[fieldCollection.size()];
int i = 0;
for (Iterator iterator = fieldCollection.iterator(); iterator.hasNext(); ) {
Field field = (Field) iterator.next();
fieldNames[i] = field.getName();
i++;
}
return fieldNames;
}
/**
* 根据get方法获取字段名
*
* @param method
* @return
*/
public static String getFieldNameByGetMethod(Method method) {
Assert.notNull(method);
String methodName = method.getName();
EntityHelper.print(methodName);
if (methodName.startsWith("get")) {
String name = methodName.substring(3, 4).toLowerCase() + methodName.substring(4);
return name;
}
return null;
}
/**
* 获取Class类的单例，如果其他类不是使用的该方法，那么必定造成对象引用不一致！因此一定要检查每个对象的构造方式是否一致都是使用本方法来构造
* 2013-10-21 上午11:22:55
*
* @param clazz 类型
* @param args 构造函数的参数列表
* @return 单例对象
* @throws Exception 异常
*/
public static final T getSingleton(Class clazz, Object... args) throws Exception {
T instance = null;
synchronized (LOCK) {
instance = (T) singletonMap.get(clazz);
if (instance == null) {
Constructor constructor = null;
try {
constructor = getConstructor(clazz, args);
} catch (SecurityException e1) {
} catch (NoSuchMethodException e1) {
}
if (constructor != null) {
try {
instance = (T) constructor.newInstance(args);
} catch (IllegalArgumentException e) {
} catch (InstantiationException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
e.printStackTrace();
}
}
if (instance == null) {
Constructor[] constructors = clazz.getConstructors();
for (int i = 0; i < constructors.length; i++) {
Constructor constructorVar = constructors[i];
try {
instance = (T) constructorVar.newInstance(args);
} catch (IllegalArgumentException e) {
} catch (InstantiationException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
}
}
if (instance == null) {
throw new NoSuchMethodException("无法初始化对象: " + clazz + "; 请检查传入的参数是否吻合");
}
}
singletonMap.put(clazz, instance);
}
return instance;
}
/**
* 根据传入的给予构造参数的传入值获取构造方法
* 2013-10-21 上午11:03:13
*
* @param clazz 调用的类对象
* @param args 传入的参数
* @return 如果存在，则返回构造方法，如果不存在，则返回空
* @throws NoSuchMethodException
* @throws SecurityException
*/
public static Constructor getConstructor(Class clazz, Object... args)
throws SecurityException, NoSuchMethodException {
Constructor constructor = null;
int length = args.length;
Class[] classes = new Class[length];
for (int i = 0; i < length; i++) {
Object object = args[i];
classes[i] = object.getClass();
}
constructor = clazz.getConstructor(classes);
return constructor;
}
/**
* 根据Class类、方法名和传入的参数，获取对应的方法对象
* 2013-10-21 下午4:49:19
*
* @param clazz Class类
* @param methodName 方法名
* @param args 参数
* @return Method
*/
public static Method getMethod(Class clazz, String methodName, Object... args)
throws SecurityException, NoSuchMethodException {
Method method = null;
int length = args.length;
Class[] classes = new Class[length];
for (int i = 0; i < length; i++) {
Object object = args[i];
classes[i] = object.getClass();
}
try {
method = clazz.getDeclaredMethod(methodName, classes);
} catch (Exception e) {
}
if (method == null && args.length > 0) {
Method[] methods = clazz.getDeclaredMethods();
for (int i = 0; i < methods.length; i++) {
Method methodVar = methods[i];
Class[] types = methodVar.getParameterTypes();
boolean isThisMethod = false;
if (types.length == args.length) {
isThisMethod = true;
for (int j = 0; j < types.length && isThisMethod; j++) {
Class type = types[j];
Object parameter = args[j];
if (!typeEquals(type, parameter)) {
isThisMethod = false;
}
}
}
if (isThisMethod) {
method = methodVar;
break;
}
}
}
return method;
}
/**
* 根据字段获取Class类的get方法
* 2013-10-21 下午12:05:53
*
* @param clazz
* @param field
* @return
*/
public static Method getMethodOfBeanByField(Class clazz, Field field) {
Method method = prefixMethodOfBeanByField("get", clazz, field);
if (method == null
&& (field.getType().equals(Boolean.class) || field.getType().equals(boolean.class))) {
method = prefixMethodOfBeanByField("is", clazz, field);
}
return method;
}
/**
* 根据字段获取Class类的set方法
* 2013-10-21 下午12:05:53
*
* @param clazz
* @param field
* @return
*/
public static Method setMethodOfBeanByField(Class clazz, Field field) {
return prefixMethodOfBeanByField("set", clazz, field, field.getType());
}
/**
* 根据字段获取Class类的set方法
* 2013-10-21 下午12:05:53
*
* @param clazz
* @param field
* @return
*/
public static Method prefixMethodOfBeanByField(String prefix, Class clazz, Field field,
Class... argTypes) {
Method method = null;
String fieldName = field.getName();
StringBuilder builder = new StringBuilder(prefix);
builder.append(fieldName.substring(0, 1).toUpperCase());
builder.append(fieldName.substring(1, fieldName.length()));
String methodName = builder.toString();
try {
method = clazz.getDeclaredMethod(methodName, argTypes);
} catch (SecurityException e) {
} catch (NoSuchMethodException e) {
}
return method;
}
private static String reflectToString2(Object object) {
if (object == null) {
return null;
}
Class clazz = object.getClass();
Class superClazz = clazz.getSuperclass();
StringBuilder builder = new StringBuilder(clazz.getName());
builder.append("@");
builder.append(object.hashCode());
builder.append("[");
Field[] fields = clazz.getDeclaredFields();
Field[] superFields = superClazz.getDeclaredFields();
int length = fields.length;
int countLength = length;
for (int i = 0; i < length; i++) {
Field field = fields[i];
if (Modifier.isStatic(field.getModifiers())) {
countLength--;
continue;
}
String fieldName = field.getName();
String methodGet = "get" + fieldName.substring(0, 1).toUpperCase()
+ fieldName.substring(1, fieldName.length());
try {
Method method = clazz.getDeclaredMethod(methodGet);
try {
Object value = method.invoke(object);
builder.append(fieldName);
builder.append("=");
if (value == null) {
builder.append("");
} else {
if (value.getClass().isArray()) {
int arrayLength = Array.getLength(value);
builder.append("{");
for (int j = 0; j < arrayLength; j++) {
Object object2 = Array.get(value, j);
builder.append(object2.toString());
if (j < arrayLength - 1) {
builder.append(", ");
}
}
builder.append("}");
} else {
builder.append(value.toString());
}
}
if (i < countLength - 1) {
builder.append(", ");
}
} catch (IllegalArgumentException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
} catch (SecurityException e) {
} catch (NoSuchMethodException e) {
}
}
int superLength = superFields.length;
countLength = superLength;
for (int i = 0; i < superLength; i++) {
Field field = superFields[i];
if (Modifier.isStatic(field.getModifiers())) {
countLength--;
continue;
}
if (countLength > 0) {
builder.append(", ");
}
String fieldName = field.getName();
String methodGet = "get" + fieldName.substring(0, 1).toUpperCase()
+ fieldName.substring(1, fieldName.length());
try {
Method method = superClazz.getDeclaredMethod(methodGet);
try {
Object value = method.invoke(object);
builder.append(fieldName);
builder.append("=");
if (value == null) {
builder.append("");
} else {
if (value.getClass().isArray()) {
int arraysuperLength = Array.getLength(value);
builder.append("{");
for (int j = 0; j < arraysuperLength; j++) {
Object object2 = Array.get(value, j);
builder.append(object2.toString());
if (j < arraysuperLength - 1) {
builder.append(", ");
}
}
builder.append("}");
} else {
builder.append(value.toString());
}
}
if (i < countLength - 1) {
builder.append(", ");
}
} catch (IllegalArgumentException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
} catch (SecurityException e) {
} catch (NoSuchMethodException e) {
}
}
builder.append("]");
return builder.toString();
}
/**
* 获取类的所有超类
* 2013-9-15 下午8:16:21
*
* @return
*/
public static Collection getAllSuperClassesOfClass(Class clazz) {
Collection classes = new LinkedHashSet();
classes.add(clazz);
Class superClass = clazz.getSuperclass();
while (superClass != null) {
classes.add(superClass);
superClass = superClass.getSuperclass();
}
return classes;
}
/**
* 使用反射机制自动ToString
* 2013-8-28 下午3:16:40
*
* @param object
* @return
*/
public static String reflectToString(Object object) {
if (object == null) {
return null;
}
Class clazz = object.getClass();
StringBuilder builder = new StringBuilder(clazz.getName());
builder.append("@");
builder.append(Integer.toHexString(object.hashCode()));
builder.append("[");
Set methods = new LinkedHashSet();
Collection classes = getAllSuperClassesOfClass(clazz);
for (Iterator iterator = classes.iterator(); iterator.hasNext(); ) {
Class claxx = (Class) iterator.next();
Method[] clazzMethods = claxx.getDeclaredMethods();
for (int i = 0; i < clazzMethods.length; i++) {
Method method = clazzMethods[i];
methods.add(method);
}
}
// for (int i = 0; i < methods.length; i++) {
// Method method = methods[i];
for (Iterator iterator = methods.iterator(); iterator.hasNext(); ) {
Method method = (Method) iterator.next();
String methodName = method.getName();
if ((methodName.startsWith("get") || methodName.startsWith("is")) && !Modifier.isStatic(method.getModifiers())
&& Modifier.isPublic(method.getModifiers())) {
try {
Object value = method.invoke(object);
String propertyName = methodName.substring(3, 4).toLowerCase()
+ methodName.substring(4);
if (propertyName.equals("class")) {// 忽略getClass方法
continue;
}
builder.append(propertyName);
builder.append("=");
if (value == null) {
builder.append("");
} else {
if (value.getClass().isArray()) {
int arraysuperLength = Array.getLength(value);
builder.append("{");
for (int j = 0; j < arraysuperLength; j++) {
Object object2 = Array.get(value, j);
builder.append(object2.toString());
if (j < arraysuperLength - 1) {
builder.append(", ");
}
}
builder.append("}");
} else {
builder.append(value.toString());
}
}
builder.append(", ");
} catch (IllegalArgumentException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
}
}
if (builder.toString().contains(", ")) {
builder.replace(builder.length() - 2, builder.length(), "");
}
builder.append("]");
return builder.toString();
}
/**
* 简单的ToString方法，只会查找简单类型的数据
* 2013-8-14 下午3:42:01
*
* @param object
* @return
*/
public static String simpleReflectToString(Object object) {
if (object == null) {
return null;
}
Class clazz = object.getClass();
Class superClazz = clazz.getSuperclass();
StringBuilder builder = new StringBuilder(clazz.getName());
builder.append("@");
builder.append(Integer.toHexString(object.hashCode()));
builder.append("[");
Method[] methods = clazz.getDeclaredMethods();
for (int i = 0; i < methods.length; i++) {
Method method = methods[i];
if (!isSimpleType(method.getReturnType())) {
continue;
}
String methodName = method.getName();
if (methodName.startsWith("get") && !Modifier.isStatic(method.getModifiers())
&& Modifier.isPublic(method.getModifiers())) {
try {
Object value = method.invoke(object);
String propertyName = methodName.substring(3, 4).toLowerCase()
+ methodName.substring(4);
builder.append(propertyName);
builder.append("=");
if (value == null) {
builder.append("");
} else {
if (value.getClass().isArray()) {
int arraysuperLength = Array.getLength(value);
builder.append("{");
for (int j = 0; j < arraysuperLength; j++) {
Object object2 = Array.get(value, j);
builder.append(object2.toString());
if (j < arraysuperLength - 1) {
builder.append(", ");
}
}
builder.append("}");
} else {
builder.append(value.toString());
}
}
builder.append(", ");
} catch (IllegalArgumentException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
}
}
if (builder.toString().contains(", ")) {
builder.replace(builder.length() - 2, builder.length(), "");
}
builder.append("]");
return builder.toString();
}
/**
* 简单的ToString方法，只会查找简单类型的数据
* 2013-8-14 下午3:42:01
*
* @param object
* @return
*/
private static String simpleReflectToString2(Object object) {
if (object == null) {
return null;
}
Class clazz = object.getClass();
Class superClazz = clazz.getSuperclass();
StringBuilder builder = new StringBuilder(clazz.getName());
builder.append("@");
builder.append(Integer.toHexString(object.hashCode()));
builder.append("[");
Field[] fields = clazz.getDeclaredFields();
Field[] superFields = superClazz.getDeclaredFields();
int length = fields.length;
int countLength = length;
for (int i = 0; i < length; i++) {
Field field = fields[i];
if (Modifier.isStatic(field.getModifiers()) || !isSimpleType(field)) {
countLength--;
continue;
}
String fieldName = field.getName();
String methodGet = "get" + fieldName.substring(0, 1).toUpperCase()
+ fieldName.substring(1, fieldName.length());
try {
Method method = clazz.getDeclaredMethod(methodGet);
try {
Object value = method.invoke(object);
builder.append(fieldName);
builder.append("=");
if (value == null) {
builder.append("");
} else {
if (value.getClass().isArray()) {
int arrayLength = Array.getLength(value);
builder.append("{");
for (int j = 0; j < arrayLength; j++) {
Object object2 = Array.get(value, j);
builder.append(object2.toString());
if (j < countLength - 1) {
builder.append(", ");
}
}
builder.append("}");
} else {
builder.append(value.toString());
}
}
builder.append(", ");
} catch (IllegalArgumentException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
} catch (SecurityException e) {
} catch (NoSuchMethodException e) {
}
}
if (builder.toString().contains(", ")) {
builder.replace(builder.length() - 2, builder.length(), "");
}
int superLength = superFields.length;
countLength = superLength;
for (int i = 0; i < superLength; i++) {
Field field = superFields[i];
if (Modifier.isStatic(field.getModifiers()) || !isSimpleType(field)) {
countLength--;
continue;
}
if (countLength > 0) {
builder.append(", ");
}
String fieldName = field.getName();
String methodGet = "get" + fieldName.substring(0, 1).toUpperCase()
+ fieldName.substring(1, fieldName.length());
try {
Method method = superClazz.getDeclaredMethod(methodGet);
try {
Object value = method.invoke(object);
builder.append(fieldName);
builder.append("=");
if (value == null) {
builder.append("");
} else {
if (value.getClass().isArray()) {
int arraysuperLength = Array.getLength(value);
builder.append("{");
for (int j = 0; j < arraysuperLength; j++) {
Object object2 = Array.get(value, j);
builder.append(object2.toString());
if (j < arraysuperLength - 1) {
builder.append(", ");
}
}
builder.append("}");
} else {
builder.append(value.toString());
}
}
if (i < countLength - 1) {
builder.append(", ");
}
} catch (IllegalArgumentException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
} catch (SecurityException e) {
} catch (NoSuchMethodException e) {
}
}
builder.append("]");
return builder.toString();
}
public static boolean typeEquals(Class type, Object parameter) {
Class paramenterClass = parameter.getClass();
if (isSimpleType(paramenterClass) && isSimpleType(type)
&& getPackagingType(type).asSubclass(getPackagingType(paramenterClass)) != null) {
return true;
} else if (type.isInstance(parameter)) {
return true;
} else {
return false;
}
}
public static Class getPackagingType(Class clazz) {
return baseTypePackagingMap.get(clazz);
}
public static boolean isSimpleType(Field field) {
if (field == null) {
return false;
}
return isSimpleType(field.getType());
}
public static boolean isSimpleType(Class clazz) {
if (clazz == null) {
return false;
}
// System.out.println(field.getType().getName());
if (clazz.equals(Boolean.class)) {
return true;
} else if (clazz.equals(Float.class)) {
return true;
} else if (clazz.equals(Long.class)) {
return true;
} else if (clazz.equals(Double.class)) {
return true;
} else if (clazz.equals(Byte.class)) {
return true;
} else if (clazz.equals(Integer.class)) {
return true;
} else if (clazz.equals(Short.class)) {
return true;
} else if (clazz.equals(Character.class)) {
return true;
} else if (clazz.equals(BigInteger.class)) {
return true;
} else if (clazz.equals(BigDecimal.class)) {
return true;
} else if (clazz.equals(String.class)) {
return true;
} else if (clazz.equals(boolean.class)) {
return true;
} else if (clazz.equals(float.class)) {
return true;
} else if (clazz.equals(long.class)) {
return true;
} else if (clazz.equals(double.class)) {
return true;
} else if (clazz.equals(byte.class)) {
return true;
} else if (clazz.equals(int.class)) {
return true;
} else if (clazz.equals(short.class)) {
return true;
} else if (clazz.equals(char.class)) {
return true;
}
return false;
}
public static Method findGetMethod(Field field) {
Class inClass = field.getDeclaringClass();
Method[] methods = inClass.getDeclaredMethods();
for (Method method : methods) {
if (!Modifier.isPublic(method.getModifiers()) || Modifier.isStatic(method.getModifiers())) {
continue;
}
String name = method.getName();
if (name.startsWith("get") && name.toLowerCase().equals("get" + field.getName().toLowerCase())) {
return method;
} else if (name.startsWith("is")
&& (field.getType() == Boolean.class || field.getType() == boolean.class || field.getType() == byte.class || field.getType() == Byte.class)
&& (name.toLowerCase().equals("is" + field.getName().toLowerCase())
|| name.toLowerCase().equals(field.getName().toLowerCase())
)) {
return method;
}
}
return null;
}
public static Method findSetMethod(Field field) {
Class inClass = field.getDeclaringClass();
Method[] methods = inClass.getDeclaredMethods();
for (Method method : methods) {
if (!Modifier.isPublic(method.getModifiers()) || Modifier.isStatic(method.getModifiers())) {
continue;
}
String name = method.getName();
if (name.startsWith("set") && name.toLowerCase().equals("set" + field.getName().toLowerCase())) {
return method;
}
}
return null;
}
/**
* 比较两个数组
*
* @param one
* @param anotherOne
* @return
*/
public static boolean arrayEquals(Object one, Object anotherOne) {
if (one == null || anotherOne == null) {
return false;
} else if (!one.getClass().equals(anotherOne.getClass()) || !one.getClass().isArray()) {
return false;
} else if (Array.getLength(one) != Array.getLength(anotherOne)) {
return false;
}
return arrayHashCode(one) == arrayHashCode(anotherOne);
}
public static int arrayHashCode(Object array) {
int hashCode = 0;
int length = Array.getLength(array);
for (int i = 0; i < length; i++) {
Object one = Array.get(array, i);
hashCode = hashCode * 31 + (one == null ? 0 : one.hashCode());
}
return hashCode;
}
private static Method[] getMethodsInClass(Class clazz) {
Method[] methods = getMethodCache.get(clazz);
if (methods == null) {
List methodList = new ArrayList();
Field[] fields = clazz.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
Field field = fields[i];
if (Modifier.isStatic(field.getModifiers())) {
continue;
}
String fieldName = field.getName();
String methodGet = "get" + fieldName.substring(0, 1).toUpperCase()
+ fieldName.substring(1, fieldName.length());
try {
Method method = clazz.getDeclaredMethod(methodGet);
methodList.add(method);
} catch (Exception e) {
}
}
Class superClazz = clazz.getSuperclass();
Field[] superFields = superClazz.getDeclaredFields();
for (int i = 0; i < superFields.length; i++) {
Field field = superFields[i];
if (Modifier.isStatic(field.getModifiers())) {
continue;
}
String fieldName = field.getName();
String methodGet = "get" + fieldName.substring(0, 1).toUpperCase()
+ fieldName.substring(1, fieldName.length());
try {
Method method = superClazz.getDeclaredMethod(methodGet);
methodList.add(method);
} catch (NoSuchMethodException e) {
}
}
if (methodList.size() > 0) {
methods = methodList.toArray(new Method[]{});
getMethodCache.put(clazz, methods);
}
}
return methods;
}
/**
* 计算对象的hashCode
* 2013-8-14 下午3:43:44
*
* @param object
* @return
*/
public static int hashCode(Object object) {
if (object == null) {
return 0;
}
int hashCode = 17;
Class clazz = object.getClass();
Method[] methodsInClass = getMethodsInClass(clazz);
for (Method method : methodsInClass) {
try {
Object value = method.invoke(object); // 拥有get方法的参数
if (method.getReturnType().isArray()) {
hashCode = hashCode * 31 + (value == null ? 0 : arrayHashCode(value));
} else {
hashCode = hashCode * 31 + (value == null ? 0 : value.hashCode());
}
} catch (IllegalArgumentException e) {
} catch (IllegalAccessException e) {
} catch (InvocationTargetException e) {
}
}
// Field[] fields = clazz.getDeclaredFields();
// for (int i = 0; i < fields.length; i++) {
// Field field = fields[i];
// if (Modifier.isStatic(field.getModifiers())) {
// continue;
// }
// String fieldName = field.getName();
// String methodGet = "get" + fieldName.substring(0, 1).toUpperCase()
// + fieldName.substring(1, fieldName.length());
// try {
// Method method = clazz.getDeclaredMethod(methodGet);
// try {
// Object value = method.invoke(object); // 拥有get方法的参数
// if (method.getReturnType().isArray()) {
// hashCode = hashCode * 31 + (value == null ? 0 : arrayHashCode(value));
// } else {
// hashCode = hashCode * 31 + (value == null ? 0 : value.hashCode());
// }
// } catch (IllegalArgumentException e) {
// } catch (IllegalAccessException e) {
// } catch (InvocationTargetException e) {
// }
// } catch (Exception e) {
// }
// }
//
// Class superClazz = clazz.getSuperclass();
// Field[] superFields = superClazz.getDeclaredFields();
// for (int i = 0; i < superFields.length; i++) {
// Field field = superFields[i];
// if (Modifier.isStatic(field.getModifiers())) {
// continue;
// }
// String fieldName = field.getName();
// String methodGet = "get" + fieldName.substring(0, 1).toUpperCase()
// + fieldName.substring(1, fieldName.length());
// try {
// Method method = superClazz.getDeclaredMethod(methodGet);
// try {
// Object value = method.invoke(object); // 拥有get方法的参数
// hashCode = hashCode * 31 + (value == null ? 0 : value.hashCode());
// } catch (IllegalArgumentException e) {
// } catch (IllegalAccessException e) {
// } catch (InvocationTargetException e) {
// }
// } catch (Exception e) {
// }
// }
return hashCode;
}
/**
* 比较两个对象
* 2013-8-14 下午3:44:00
*
* @param origin
* @param target
* @return
*/
public static boolean equals(Object origin, Object target) {
boolean isEquals = false;
if (origin == null) {
if (target == null) {
isEquals = true;
} else {
isEquals = false;
}
} else {
if (target == null) {
isEquals = false;
} else { // 两者都不为空
if (origin.getClass() == target.getClass()) {
if (origin.hashCode() == target.hashCode()) {
isEquals = true;
} else {
isEquals = false;
}
} else {
isEquals = false;
}
}
}
return isEquals;
}
/**
* 打印对象，
* 2013-8-26 下午2:45:02
*
* @param object
*/
public static void printDetail(Object object) {
StackTraceElement[] stackTraceElements = StackTraceHelper.getStackTrace();
StackTraceElement stackTraceElement = stackTraceElements[2]; // 调用本类的对象类型堆栈
StringBuilder builder = new StringBuilder();
builder.append(" ------------------------------------------------------------ ");
builder.append(StringHelper.line());
builder.append(StackTraceHelper
.buildStackTrace(new StackTraceElement[]{stackTraceElement}));
builder.append(" ");
if (object == null) {
builder.append("");
} else {
builder.append(object.getClass().getSimpleName());
builder.append(" =============== ");
builder.append(reflectToString(object));
}
builder.append(StringHelper.line());
builder.append(" ------------------------------------------------------------ ");
System.out.println(builder.toString());
}
/**
* 打印对象，
* 2013-8-26 下午2:45:02
*
* @param object
*/
public static void print(Object object) {
StackTraceElement[] stackTraceElements = StackTraceHelper.getStackTrace();
StackTraceElement stackTraceElement = stackTraceElements[2]; // 调用本类的对象类型堆栈
StringBuilder builder = new StringBuilder();
builder.append(" ------------------------------------------------------------ ");
builder.append(StringHelper.line());
builder.append(StackTraceHelper
.buildStackTrace(new StackTraceElement[]{stackTraceElement}));
builder.append(" ");
if (object == null) {
builder.append("");
} else {
builder.append(object.getClass().getSimpleName());
builder.append(" =============== ");
builder.append(buildObjectToString(object));
}
builder.append(StringHelper.line());
builder.append(" ------------------------------------------------------------ ");
System.out.println(builder.toString());
}
public static void print() {
StackTraceElement[] stackTraceElements = StackTraceHelper.getStackTrace();
StackTraceElement stackTraceElement = stackTraceElements[2]; // 调用本类的对象类型堆栈
StringBuilder builder = new StringBuilder();
builder.append(" ------------------------------------------------------------ ");
builder.append(StringHelper.line());
builder.append(StackTraceHelper
.buildStackTrace(new StackTraceElement[]{stackTraceElement}));
builder.append(" ");
builder.append(StringHelper.line());
builder.append(" ------------------------------------------------------------ ");
System.out.println(builder.toString());
}
public static String buildObjectToString(Object object) {
if (object == null) {
return null;
}
Class clazz = object.getClass();
StringBuilder builder = new StringBuilder();
if (clazz.isArray()) {
builder.append("[");
int length = Array.getLength(object);
for (int i = 0; i < length; i++) {
Object one = Array.get(object, i);
builder.append(buildObjectToString(one));
if (i < length - 1) {
builder.append(", ");
}
}
builder.append("]");
// } else if (clazz.getSuperclass() == Collection.class) {
// builder.append("[");
// Collection collection = (Collection) object;
//
// int i = 0;
// int length = collection.size();
// for (Object o : collection) {
// builder.append(buildObjectToString(o));
// if (i < length - 1) {
// builder.append(", ");
// }
// }
// builder.append("]");
} else {
builder.append(object.toString());
}
return builder.toString();
}
/**
*
* 2013-8-8 上午11:36:26
*
* @see Object#equals(Object)
*/
@Override
public boolean equals(Object obj) {
return equals(this, obj);
}
/**
*
* 2013-8-8 上午11:16:04
*
* @see Object#hashCode()
*/
@Override
public int hashCode() {
return hashCode(this);
}
/**
*
* 2013-8-7 下午12:21:49
*
* @return
*/
private String reflectToString() {
return reflectToString(this);
}
/**
*
* 2013-8-7 下午12:21:05
*
* @see Object#toString()
*/
@Override
public String toString() {
return this.reflectToString();
}
/**
* 根据类名获取首字母消息的名称
* 2014年2月25日 下午3:25:46
*
* @param clazz
* @return
*/
public static String getClassToBeanName(Class clazz) {
String simpleName = clazz.getSimpleName();
String firstWord = simpleName.substring(0, 1).toLowerCase();
String otherWords = simpleName.substring(1);
return firstWord + otherWords;
}
public static Object getFieldValue(Object object, String fieldName) throws NoSuchFieldException, IllegalAccessException {
Assert.notNull(object);
Class clazz = object.getClass();
Field field = clazz.getDeclaredField(fieldName);
field.setAccessible(true);
return field.get(object);
}
public static void main(String[] args) throws NoSuchFieldException, IllegalAccessException {
String str = "asf";
System.out.println(getFieldValue(str, "hash"));
String[] as = {"af", "asf"};
print(as);
Collection strs = new ArrayList();
strs.add("asf");
strs.add("asdf");
strs.add("ff");
strs.add("asf");
print(strs);
}
}
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