java自定义异常配合枚举

自定义异常：

public class SimpleException extends RuntimeException {
private String msg ;
private StatusCode statusCode ;

public SimpleException(StatusCode statusCode, String msg) {
super(msg) ;
this.msg = msg ;
this.statusCode = statusCode ;
}

public SimpleException(StatusCode statusCode, String msg, Throwable e) {
super(msg, e) ;
this.msg = msg ;
this.statusCode = statusCode ;
}

public StatusCode getStatusCode() {
return statusCode;
}

public void setStatusCode(StatusCode statusCode) {
this.statusCode = statusCode;
}

@Override
public String toString() {
return "登陆异常："+this.statusCode+" "+this.msg ;
}
}

枚举：
public enum StatusCode {
UNKNOWN_ERR("未知错误",0),
USERNAME_OR_PASSWORD_ERR("用户名密码错误", 1),
REANLNAME_OR_IDNUMBER_ERR("姓名身份证号错误", 2),
SMS_CODE_ERR("验证码错误", 3),
REDIS_ERR("Redis操作异常",4),
GENERAL_ERR("一般异常",5),
HTTP_POST_ERR("http post 请求异常",6),
HTTP_GET_ERR("http get 请求异常",7);
// 成员变量
private String name;
private Integer index;
// 构造方法
private StatusCode(String name, Integer index) {
this.name = name;
this.index = index;
}
// 普通方法
public static String getName(Integer index) {
for (StatusCode c : StatusCode.values()) {
if (c.getIndex() == index) {
return c.name;
}
}
return null;
}
// get set 方法
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getIndex() {
return index;
}
public void setIndex(Integer index) {
this.index = index;
}

@Override
public String toString() {
return this.index+":"+this.name;
}
}