自定义异常三

自定义异常三-1

 1 import java.text.MessageFormat;
 2 
 3 /**
 4  * 账户异常类
 5  * 
 6  * 该类定义了一些账户里存在的异常 并且不同的code 对应了不同的异常情况
 7  * 
 8  * 
 9  */
10 public class FundAccountException extends RuntimeException {
11 
12     private static final long serialVersionUID = 618428211364837565L;
13     
14     /**
15      * 不合法余额，比如余额为负
16      */
17     public static final FundAccountException INVALID_BALANCE = new FundAccountException("invalid_balance");
18 
19     private String message;
20     
21     private String code;
22     
23     protected FundAccountException(String code) {
24         this.code = code;
25     }
26 
27     /**
28      * 实例化账户异常 错误信息：a_message ：String(类型) 参数列表：a_params ：Object[] (类型)
29      * 
30      * @param message
31      * @param params
32      * @return AccountException 账户异常
33      */
34     public FundAccountException newInstance(String message, Object... params) {
35         FundAccountException e = new FundAccountException(this.code);
36         e.setMessage(message, params);
37         return e;
38     }
39 
40     
41     public void setMessage(String message, Object... args) {
42         this.message = MessageFormat.format(message, args);
43     }
44 
45     public String getCode() {
46         return code;
47     }
48 
49     public String getMessage() {
50         return message;
51     }
52 }

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