微信退款时会报过长异常：DerInputStream.getLength(): lengthTag=111, too big.

是因为证书在maven打包时改变了原有的证书。

解决方案：

添加maven配置:

<resources>
<resource>
<directory>src/main/resources</directory>
<includes>
<include>**/*.xml</include>
<include>**/*.p12</include>
<include>**/*.properties</include>
</includes>
<filtering>true</filtering>
</resource>
<resource>
<directory>src/main/webapp/WEB-INF</directory>
<includes>
<include>**/*.xml</include>
<include>**/*.properties</include>
</includes>
<filtering>true</filtering>
</resource>
</resources>

maven设置打包后禁止修改：

<plugin> 
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.6</version>
<configuration>
<encoding>UTF-8</encoding>
<!-- 过滤证书文件 -->
<nonFilteredFileExtensions>
<nonFilteredFileExtension>pem</nonFilteredFileExtension>
<nonFilteredFileExtension>pfx</nonFilteredFileExtension>
<nonFilteredFileExtension>p12</nonFilteredFileExtension>
</nonFilteredFileExtensions>
</configuration>
</plugin>

我遇到的问题是这么解决的，希望对大家有帮助