折腾：
【未解决】VSCode中调试java报错：Build failed do you want to continue
期间，看到问题中显示：
The serializable class CustomException does not declare a static final serialVersionUID field of type long
点击看看：
The serializable class does not declare a static final serialVersionUID field of type long
可以解决，也可以去设置忽略此警告
为了代码更好，还是实现
VSCode中，鼠标移动到类上，点击 快速修复
选择 Add generated serial version ID
即可自动插入代码：
src/refer/java/iec_analysis/src/main/java/com/iec/analysis/exception/CustomException.java
private static final long serialVersionUID = 1008826607851521180L;
即可。解决。
还有其他很多个文件报此错误：
按照此法，都去加上：
继续去修复其他文件即可。
“The serialization runtime associates with each serializable class a version number, called a serialVersionUID, which is used during deserialization to verify that the sender and receiver of a serialized object have loaded classes for that object that are compatible with respect to serialization. If the receiver has loaded a class for the object that has a different serialVersionUID than that of the corresponding sender’s class, then deserialization will result in an InvalidClassException. A serializable class can declare its own serialVersionUID explicitly by declaring a field named “serialVersionUID” that must be static, final, and of type long:”
如果要忽略掉单个class，可以加上：
@SuppressWarnings("serial")Eclise中忽略的话，是：
Eclipse ->Preferences->Java->Compiler->Errors/Warnings->Potential programming problems->Serializable class without serialVersionUID -> change warning to ignore
或设置一个固定的值，比如
public static final long serialVersionUID = 1L;
Eclipse中自动生成则是：Source Cleanup…->Custome Profile->Missing Code->Add serial version ID
【总结】
java代码中，当一个类实现了Serializable接口，如果没有实现serialVersionUID，则会报警告
The serializable class xxx does not declare a static final serialVersionUID field of type long
原因：
主要是用来序列化和反序列化时，确保版本号一致，才能确保序列化和反序列化是一致的，数据正确的。
解决办法：
- 忽略此警告
- 对于单个类，加上：@SuppressWarnings(“serial”)
- 对于IDE来说，可以设置全局的忽略
- Eclipse
- Preferences->Java->Compiler->Errors/Warnings->Potential programming problems->Serializable class without serialVersionUID -> change warning to ignore
- 设置对应的值
- 设置一个默认的值
- 比如设置成1：
- 代码：private static final long serialVersionUID = 1L;
- 方式：
- 自己手动加上：
- 利用IDE自动加上
- VSCode：鼠标移动到类名上-》快速修复-》Add default serial version ID
- 设置一个（根据类名等信息）自动生成的值
- 用IDE自动生成
- VSCode：鼠标移动到类名上-》快速修复-》Add generated serial version ID
- Eclipse：Add generated serial version ID
自己推荐用：Add generated serial version ID
好处：确保不会重复，且利于以后万一真用到了serial序列号。更准确。
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