L_zsen的博客

今天在使用httpclient 调用第三方接口的时候出现了socket closed错误。经过一番百度，找到了原因。原因是因为在封装HttpClientUtils时在finally块中将response关闭了。调用了response.closed方法而在调用完后又需要将response转换成string，public static CloseableHttpResponse doPostJ...

package com.fy.module.seeker.test;import java.io.File;import java.io.FileInputStream;import java.io.InputStream;import org.apache.poi.hssf.usermodel.HSSFCell;import org.apache.poi.hssf.usermode...

List a = new ArrayList<>();a.add("aa");a.add("bb");String astr = String.join(",",a);sout(astr);拼接'' astr ="'"+String.join("','",a)+"'";结果：aa,bb字符串转listList<String> listString = Arr...

记录下excel文件导出到客户端下载的方法，其他文件也是一样OutputStream out = response.getOutputStream();File file = new File(path);InputStream fis = new BufferedInputStream(new FileInputStream(file));byte[] buffer = new byte...