使用XStream序列化、反序列化XML資料時遇到的各種問題
阿新 • • 發佈：2019-02-02
publicclass LevinEnumSingleNameConverter extends EnumSingleValueConverter {
privatestaticfinal String CUSTOM_ENUM_NAME_METHOD ="getName";
privatestaticfinal String CUSTOM_ENUM_VALUE_OF_METHOD ="toEnum";
private Class<?extends Enum<?>> enumType;
public LevinEnumSingleNameConverter(Class
super(type);
this.enumType = type;
}
@Override
public String toString(Object obj) {
Method method = getCustomEnumNameMethod();
if(method ==null) {
returnsuper.toString(obj);
} else {
return (String)method.invoke(obj, (Object[])null);
} catch(Exception ex) {
returnsuper.toString(obj);
}
}
}
@Override
public Object fromString(String str) {
Method method = getCustomEnumStaticValueOfMethod();
return enhancedFromString(str);
}
try {
return method.invoke(null, str);
} catch(Exception ex) {
return enhancedFromString(str);
}
}
private Method getCustomEnumNameMethod() {
try {
return enumType.getMethod(CUSTOM_ENUM_NAME_METHOD, (Class<?>[])null);
} catch(Exception ex) {
returnnull;
}
}
private Method getCustomEnumStaticValueOfMethod() {
try {
Method method = enumType.getMethod(CUSTOM_ENUM_VALUE_OF_METHOD, (Class<?>[])null);
if(method.getModifiers() == Modifier.STATIC) {
return method;
}
returnnull;
} catch(Exception ex) {
returnnull;
}
}
private Object enhancedFromString(String str) {
try {
returnsuper.fromString(str);
} catch(Exception ex) {
for(Enum<?> item : enumType.getEnumConstants()) {
if(item.name().equalsIgnoreCase(str)) {
return item;
}
}
thrownew IllegalStateException("Cannot converter <"+ str +"> to enum <"+ enumType +">");
}
}
}
privatestaticfinal String CUSTOM_ENUM_NAME_METHOD ="getName";
privatestaticfinal String CUSTOM_ENUM_VALUE_OF_METHOD ="toEnum";
private Class<?extends Enum<?>> enumType;
public LevinEnumSingleNameConverter(Class
super(type);
this.enumType = type;
}
@Override
public String toString(Object obj) {
Method method = getCustomEnumNameMethod();
if(method ==null) {
returnsuper.toString(obj);
} else {
return (String)method.invoke(obj, (Object[])null);
} catch(Exception ex) {
returnsuper.toString(obj);
}
}
}
@Override
public Object fromString(String str) {
Method method = getCustomEnumStaticValueOfMethod();
return enhancedFromString(str);
}
try {
return method.invoke(null, str);
} catch(Exception ex) {
return enhancedFromString(str);
}
}
private Method getCustomEnumNameMethod() {
try {
return enumType.getMethod(CUSTOM_ENUM_NAME_METHOD, (Class<?>[])null);
} catch(Exception ex) {
returnnull;
}
}
private Method getCustomEnumStaticValueOfMethod() {
try {
Method method = enumType.getMethod(CUSTOM_ENUM_VALUE_OF_METHOD, (Class<?>[])null);
if(method.getModifiers() == Modifier.STATIC) {
return method;
}
returnnull;
} catch(Exception ex) {
returnnull;
}
}
private Object enhancedFromString(String str) {
try {
returnsuper.fromString(str);
} catch(Exception ex) {
for(Enum<?> item : enumType.getEnumConstants()) {
if(item.name().equalsIgnoreCase(str)) {
return item;
}
}
thrownew IllegalStateException("Cannot converter <"+ str +"> to enum <"+ enumType +">");
}
}
}