SSM整合以及相关补充( 十 ) _生活百科

项目运行过程中可预计且无法避免的异常

其他异常（Exception）

编程人员未预期到的异常

对于不同的异常，我们采用不同的应对方法，我们下面做出简单的处理：

Code状态码增加

package com.itheima.controller;public class Code { public static final Integer SAVE_OK = 20011; public static final Integer DELETE_OK = 20021; public static final Integer UPDATE_OK = 20031; public static final Integer GET_OK = 20041; public static final Integer SAVE_ERR = 20010; public static final Integer DELETE_ERR = 20020; public static final Integer UPDATE_ERR = 20030; public static final Integer GET_ERR = 20040; public static final Integer SYSTEM_ERR = 50001; public static final Integer SYSTEM_TIMEOUT_ERR = 50002; public static final Integer SYSTEM_UNKNOW_ERR = 59999; public static final Integer BUSINESS_ERR = 60002;}

书写自定义异常处理器

// SystemExceptionpackage com.itheima.exception;//自定义异常处理器，用于封装异常信息，对异常进行分类，需要继承RuntimeExceptionpublic class SystemException extends RuntimeException{ private Integer code; public Integer getCode() { return code; } public void setCode(Integer code) { this.code = code; } public SystemException(Integer code, String message) { super(message); this.code = code; } public SystemException(Integer code, String message, Throwable cause) { super(message, cause); this.code = code; }}// BusinessExceptionpackage com.itheima.exception;//自定义异常处理器，用于封装异常信息，对异常进行分类,需要继承RuntimeExceptionpublic class BusinessException extends RuntimeException{ private Integer code; public Integer getCode() { return code; } public void setCode(Integer code) { this.code = code; } public BusinessException(Integer code, String message) { super(message); this.code = code; } public BusinessException(Integer code, String message, Throwable cause) { super(message, cause); this.code = code; }}