在项目中枚举的名称(name)和值(value)需要相互之间转化,翻译它的名称或者值
主要使用的类ConvertEnum
ConvertEnum类
package com.elvesfish.ms.common.denum;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
import lombok.extern.slf4j.Slf4j;
/**
* @author: elvesfish
* @date: 2019/5/22
*/
@Slf4j
public class ConvertEnum<T extends Enum<T>> {
public static <T extends Enum<T>> String nameToValue(String name, Class<T> clazz) {
return nameToValueCommon(name, clazz, "getName", "getValue");
}
public static <T extends Enum<T>> String nameToValue(String name, Class<T> clazz, String getName, String getValue) {
return nameToValueCommon(name, clazz, getName, getValue);
}
public static <T extends Enum<T>> String valueToName(String value, Class<T> clazz) {
return nameToValueCommon(value, clazz, "getValue", "getName");
}
public static <T extends Enum<T>> String valueToName(String value, Class<T> clazz, String getValue, String getName) {
return nameToValueCommon(value, clazz, getValue, getName);
}
public static <T extends Enum<T>> String[] namesToValues(String[] names, Class<T> clazz) {
String[] result = new String[names.length];
return Arrays.stream(names).map(p -> nameToValue(p, clazz)).collect(Collectors.toList()).toArray(result);
}
public static <T extends Enum<T>> String[] namesToValues(String[] names, Class<T> clazz, String getName, String getValue) {
String[] result = new String[names.length];
return Arrays.stream(names).map(p -> nameToValue(p, clazz, getName, getValue)).collect(Collectors.toList()).toArray(result);
}
public static <T extends Enum<T>> String[] valuesToNames(String[] values, Class<T> clazz) {
String[] result = new String[values.length];
return Arrays.stream(values).map(p -> valueToName(p, clazz)).collect(Collectors.toList()).toArray(result);
}
public static <T extends Enum<T>> String[] valuesToNames(String[] values, Class<T> clazz, String getValue, String getName) {
String[] result = new String[values.length];
return Arrays.stream(values).map(p -> valueToName(p, clazz, getValue, getName)).collect(Collectors.toList()).toArray(result);
}
public static <T extends Enum<T>> List<String> namesToValuesByList(List<String> names, Class<T> clazz) {
return names.stream().map(p -> nameToValue(p, clazz)).collect(Collectors.toList());
}
public static <T extends Enum<T>> List<String> namesToValuesByList(List<String> names, Class<T> clazz, String getName, String getValue) {
return names.stream().map(p -> nameToValue(p, clazz, getName, getValue)).collect(Collectors.toList());
}
public static <T extends Enum<T>> List<String> valuesToNamesByList(List<String> values, Class<T> clazz) {
return values.stream().map(p -> valueToName(p, clazz)).collect(Collectors.toList());
}
public static <T extends Enum<T>> List<String> valuesToNamesByList(List<String> values, Class<T> clazz, String getValue, String getName) {
return values.stream().map(p -> valueToName(p, clazz, getValue, getName)).collect(Collectors.toList());
}
public static <T extends Enum<T>> String nameToValueCommon(String name, Class<T> clazz, String getName, String getValue) {
T t = getStringByTypeCode(clazz, getName, name);
//获取定义的方法
String typeCodeVal = "";
if (t != null) {
try {
Method targetMethod = clazz.getDeclaredMethod(getValue);
//获取传过来方法的
typeCodeVal = targetMethod.invoke(t).toString();
} catch (NoSuchMethodException e) {
log.error("NoSuchMethodException", e);
} catch (IllegalAccessException e) {
log.error("IllegalAccessException", e);
} catch (InvocationTargetException e) {
log.error("InvocationTargetException", e);
}
}
return typeCodeVal;
}
public static <T extends Enum<T>> T getStringByTypeCode(Class<T> clazz, String getTypeCodeMethodName, String typeCode) {
T result = null;
try {
//Enum接口中没有values()方法,我们仍然可以通过Class对象取得所有的enum实例
T[] arr = clazz.getEnumConstants();
//获取定义的方法
Method targetMethod = clazz.getDeclaredMethod(getTypeCodeMethodName);
String typeCodeVal = null;
//遍历枚举定义
for (T entity : arr) {
//获取传过来方法的
typeCodeVal = targetMethod.invoke(entity).toString();
//执行的方法的值等于参数传过来要判断的值
if (typeCodeVal.equals(typeCode)) {
//返回这个枚举
result = entity;
break;
}
}
} catch (IllegalAccessException e) {
log.error("IllegalAccessException", e);
} catch (IllegalArgumentException e) {
log.error("IllegalArgumentException", e);
} catch (InvocationTargetException e) {
log.error("InvocationTargetException", e);
} catch (NoSuchMethodException e) {
log.error("NoSuchMethodException", e);
} catch (SecurityException e) {
log.error("SecurityException", e);
}
return result;
}
}
项目中定义的枚举CurrentEnum
package com.elvesfish.ms.common.denum;
public enum CurrentEnum {
/**
* 在用
*/
USEING("在用", "1"),
/**
* 历史版本
*/
HISTORY("历史版本", "2");
private String name;
private String value;
public String getName() {
return name;
}
public String getValue() {
return value;
}
CurrentEnum(String name, String value) {
this.name = name;
this.value = value;
}
}
周期枚举
package com.elvesfish.ms.common.denum;
public enum CycleEnum {
/**
* 年
*/
YEAR("年", "1"),
MONTH("月", "2"),
DAY("日", "3"),
SEASON("季", "4"),
WEEKS("周", "5"),
CUSTOM("自定义", "6");
private String name;
private String value;
public String getName() {
return name;
}
public String getValue() {
return value;
}
CycleEnum(String name, String value) {
this.name = name;
this.value = value;
}
}
测试类
package com.elvesfish.ms.common.denum;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import lombok.extern.slf4j.Slf4j;
/**
* @author: elvesfish
* @date: 2019/5/22
*/
@Slf4j
public class TestConvertEnum {
public static void main(String[] args) {
testDefault();
testDefaultCustomer();
}
public static void testDefault() {
log.info("------------默认属性名称---------------------------------");
String value = ConvertEnum.nameToValue("在用", CurrentEnum.class);
log.info("value item=" + value);
log.info("---------------------------------------------");
String value2 = ConvertEnum.nameToValue("年", CycleEnum.class);
log.info("value item=" + value2);
log.info("---------------------------------------------");
String name = ConvertEnum.valueToName("1", CurrentEnum.class);
log.info("name item=" + name);
log.info("---------------------------------------------");
String[] values = ConvertEnum.namesToValues(new String[]{"在用", "历史版本"}, CurrentEnum.class);
Arrays.stream(values).forEach(item -> {
log.info("value item=" + item);
});
log.info("---------------------------------------------");
String[] names = ConvertEnum.valuesToNames(new String[]{"2", "1"}, CurrentEnum.class);
Arrays.stream(names).forEach(item -> {
log.info("name item=" + item);
});
log.info("---------------------------------------------");
List<String> data = new ArrayList<>();
data.add("年");
data.add("周");
data.add("月");
List<String> valuesByList = ConvertEnum.namesToValuesByList(data, CycleEnum.class);
valuesByList.stream().forEach(item -> {
log.info("value item=" + item);
});
log.info("---------------------------------------------");
List<String> valueData = new ArrayList<>();
valueData.add("1");
valueData.add("3");
valueData.add("2");
valueData.add("4");
valueData.add("5");
List<String> namesByList = ConvertEnum.valuesToNamesByList(valueData, CycleEnum.class);
namesByList.stream().forEach(item -> {
log.info("name item=" + item);
});
}
public static void testDefaultCustomer() {
log.info("------------自定义属性名称---------------------------------");
String value = ConvertEnum.nameToValue("在用", CurrentEnum.class, "getName", "getValue");
log.info("value item=" + value);
log.info("---------------------------------------------");
String value2 = ConvertEnum.nameToValue("年", CycleEnum.class, "getName", "getValue");
log.info("value item=" + value2);
log.info("---------------------------------------------");
String name = ConvertEnum.valueToName("1", CurrentEnum.class, "getValue", "getName");
log.info("name item=" + name);
log.info("---------------------------------------------");
String[] values = ConvertEnum.namesToValues(new String[]{"在用", "历史版本"}, CurrentEnum.class, "getName", "getValue");
Arrays.stream(values).forEach(item -> {
log.info("value item=" + item);
});
log.info("---------------------------------------------");
String[] names = ConvertEnum.valuesToNames(new String[]{"2", "1"}, CurrentEnum.class, "getValue", "getName");
Arrays.stream(names).forEach(item -> {
log.info("name item=" + item);
});
log.info("---------------------------------------------");
List<String> data = new ArrayList<>();
data.add("年");
data.add("周");
data.add("月");
List<String> valuesByList = ConvertEnum.namesToValuesByList(data, CycleEnum.class, "getName", "getValue");
valuesByList.stream().forEach(item -> {
log.info("value item=" + item);
});
log.info("---------------------------------------------");
List<String> valueData = new ArrayList<>();
valueData.add("1");
valueData.add("3");
valueData.add("2");
valueData.add("4");
valueData.add("5");
List<String> namesByList = ConvertEnum.valuesToNamesByList(valueData, CycleEnum.class, "getValue", "getName");
namesByList.stream().forEach(item -> {
log.info("name item=" + item);
});
}
}
打印结果:
16:53:55.895 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ------------默认属性名称---------------------------------
16:53:55.911 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=1
16:53:55.911 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:55.912 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=1
16:53:55.913 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:55.913 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=在用
16:53:55.913 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.039 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=1
16:53:56.039 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=2
16:53:56.039 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.041 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=历史版本
16:53:56.041 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=在用
16:53:56.041 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.044 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=1
16:53:56.044 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=5
16:53:56.044 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=2
16:53:56.044 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=年
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=日
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=月
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=季
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=周
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ------------自定义属性名称---------------------------------
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=1
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=1
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=在用
16:53:56.057 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.061 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=1
16:53:56.061 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=2
16:53:56.061 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.063 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=历史版本
16:53:56.063 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=在用
16:53:56.063 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.065 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=1
16:53:56.065 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=5
16:53:56.065 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - value item=2
16:53:56.065 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - ---------------------------------------------
16:53:56.066 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=年
16:53:56.066 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=日
16:53:56.066 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=月
16:53:56.066 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=季
16:53:56.066 [main] INFO com.elvesfish.ms.common.denum.TestConvertEnum - name item=周