java demo文件(快速对接)

<pre><code>参见附件</code></pre> <p><a href="https://www.showdoc.com.cn/server/api/attachment/visitfile/sign/5124951a9ad165949d4016784ac0dbf0" title="[banma_platform_openapi_java_demo_v4.zip">banma_platform_openapi_java_demo_v4.zip</a></p>