qq_46205652的博客

//得到集合内容List<SysPosterDetail> sysPosterDetails = sysPosterDetailService.selectList(wrapper1);//用逗号分割StringJoiner stringJoiner = new StringJoiner(",");sysPosterDetails.forEach(s->{ stringJoiner.add(s.getPosterUrl());});//最终得到的自负床String

package com.zqj.http_请求;import org.apache.commons.io.IOUtils;import javax.net.ssl.*;import java.io.BufferedReader;import java.io.DataOutputStream;import java.io.InputStream;import java.io.InputStreamReader;import java.net.URL;import java.security