是否属于

public class EnumUtil {
    /**
     * 判断数值是否属于枚举类的值
     * @param key
     * @return
     */
    public static boolean isInclude(int key){
        boolean include = false;
        for (SwitchStatus e: SwitchStatus.values()){
            if(e.getKey()==key){
                include = true;
                break;
            }
        }
        return include;
    }
}

代码测试

class Test{
    public static void main(String[] args) {
        CustType mtype = CustType.getMemberType(1);
        System.out.println(mtype);
        // 输出结果: STUDENT
        System.out.println(mtype.getDesc());
        // 输出结果: 学生
        String sncode = mtype.getPrefix();
        System.out.println(sncode);
        // 输出结果: S
    }

package com.toltech.appstore.persistence.entity.Test;

import java.util.Arrays;
import java.util.List;

/**
 * Created by wanggs on 2017/8/22.
 */
public class EnumTest {
    public static void main(String[] args) {
         List<Integer> USER_TYPES = Arrays.asList(CustType.STUDENT.getValue(), CustType.TEACHER.getValue(), CustType.PARENTS.getValue());
        System.out.println(USER_TYPES.contains(6));
        
        // false

    }
}
enum CustType {
    /**
     * 学生
     */
    STUDENT(1, "S", "学生"),
    /**
     * 教师
     */
    TEACHER(2, "T", "教师"),
    /**
     * 家长
     */
    PARENTS(3, "P", "家长");
    private int value;
    private String prefix;
    private String desc;

    private CustType(int value, String prefix, String desc){
        this.value = value;
        this.prefix = prefix;
        this.desc = desc;
    }

    public int getValue(){
        return value;
    }

    public String getPrefix() {
        return prefix;
    }

    public String getDesc(){
        return desc;
    }

    public static CustType getMemberType(int value){
        for(CustType mtype : CustType.values()){
            if(value == mtype.getValue()){
                return mtype;
            }
        }
        return null;
    }
}

Demo

public class Test {
    public static void main(String[] args) {
        ResultBean<AuthzBean> result = null;
        AuthzBean authz = null;
        result = new ResultBean<AuthzBean>(ResultStatu.X1000, authz, "用户名为空");
        System.out.println(result.isSuccess());
        // false
        System.out.println(ResultStatu.X1000.isSuccess());
        // false
        JSONObject object = (JSONObject) JSONObject.toJSON(result);
        System.out.println(object);
        // {"message":"用户名为空","status":1000,"success":false}
    }
}

pojo

public class ResultBean<T> implements Serializable {
    private static final long serialVersionUID = 1L;
    private boolean success;
    private Integer status;
    private String message;
    private T data;
    
    public ResultBean(ResultStatu statu, T data){
        this.success = statu.isSuccess();
        this.status = statu.getStatus();
        this.message = statu.getMessage();
        this.data = data;
    }
    
    public ResultBean(ResultStatu statu, T data, String message){
        this.success = statu.isSuccess();
        this.status = statu.getStatus();
        if(StringUtils.isNotBlank(message)){
            this.message = message;
        } else {
            this.message = statu.getMessage();
        }
        this.data = data;
    }

    public boolean isSuccess() {
        return success;
    }

    public void setSuccess(boolean success) {
        this.success = success;
    }

    public Integer getStatus() {
        return status;
    }

    public void setStatus(Integer status) {
        this.status = status;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public T getData() {
        return data;
    }

    public void setData(T data) {
        this.data = data;
    }
}

public class AuthzBean implements Serializable {
    private static final long serialVersionUID = 1L;
    private Integer id;
    private String account;
    private CustType mtype;
    private String token;
    private List<Integer> parentIds;
    private Integer childId;
    private Integer areaId;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getAccount() {
        return account;
    }

    public void setAccount(String account) {
        this.account = account;
    }

    public CustType getMtype() {
        return mtype;
    }

    public void setMtype(CustType mtype) {
        this.mtype = mtype;
    }

    public String getToken() {
        return token;
    }

    public void setToken(String token) {
        this.token = token;
    }

    public List<Integer> getParentIds() {
        return parentIds;
    }

    public void setParentIds(List<Integer> parentIds) {
        this.parentIds = parentIds;
    }

    public Integer getChildId() {
        return childId;
    }

    public void setChildId(Integer childId) {
        this.childId = childId;
    }

    public Integer getAreaId() {
        return areaId;
    }

    public void setAreaId(Integer areaId) {
        this.areaId = areaId;
    }
    
}

枚举

public enum ResultStatu {
    /**
     * 业务处理成功
     */
    X0000(true, 0, "业务处理成功"),
    /**
     * 参数不能为空
     */
    X1000(false, 1000, "参数不能为空"),
    /**
     * 参数不正确
     */
    X1001(false, 1001, "参数不正确"),
    /**
     * 依赖系统接口出错
     */
    X1002(false, 1002, "依赖系统接口出错"),
    /**
     * 数据存在重复
     */
    X1003(false, 1003, "数据存在重复");
    private boolean success;
    private int status;
    private String message;
    
    private ResultStatu(boolean success, int status, String message){
        this.success = success;
        this.status = status;
        this.message = message;
    }

    public boolean isSuccess() {
        return success;
    }

    public int getStatus() {
        return status;
    }

    public String getMessage() {
        return message;
    }
}

enums 工具类

public class EnumUtil {

    public static <T extends CodeEnum> T getByCode(Integer code, Class<T> enumClass) {
        for (T each: enumClass.getEnumConstants()) {
            if (code.equals(each.getCode())) {
                return each;
            }
        }
        return null;
    }
}

public interface CodeEnum {
    Integer getCode();
}