android 访问域名接口报错

1. 移动端访问https域名及接口，显示

java.net.UnknownHostException: Unable to resolve host  "xxx" : No address associated with hostname

2. 使用okhttp访问的接口，于是设定忽略证书，报错

javax.net.ssl.SSLException: Write error: ssl=xxx: I/O error during system call, Connection reset by peer

3. 怀疑是忽略证书的写法出了问题，于是又调整了忽略的写法，

然后还是报错

javax.net.ssl.SSLException: Write error: ssl=xxx: I/O error during system call, Broken pipe

此时后端报错为：

Bad Request: Failed to parse multipart servlet request; nested exception is java.io.IOException: org.apache.tomcat.util.http.fileupload
.impl.IOFileUploadException: Processing of multipart/form-data request failed. Stream ended unexpectedly

4.查了一下百度，发现有人说是后端的tomcat版本的问题，而且我正在使用的版本正好是9.0.31（springboot 2.2.5.RELEASE）

于是升级版本，由于我是springboot内嵌的tomcat，所以升级了springboot的版本

 <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version> 2.2.13.RELEASE</version>
        <relativePath/>
    </parent>

升级版本后，验证正常