查看进程对应的路径&查看端口号对应的进程&ubuntu 安装ssh&共享WiFi设置&MyBatis 使用map类型作为参数，复杂查询（导出数据）
Linux 查询当前进程所在的路径
top 命令查询相应的进程号pid
ps -ef |grep 进程名
lsof -I:端口号
netstat -anp|grep 端口号
cd /proc/进程id
cwd 进程运行目录
exe 执行程序的绝对路径
cmdline 程序运行时输入的命令行命令
environ 记录了进程运行时的环境变量
fd 目录下是进程打开或使用的文件的符号连接
查看端口号对应进程
lsof -i :端口号
ubuntu 安装ssh
sudo apt-get install openssh-server
OpenGauss SpringBoot 配置
driver-class-name: org.postgresql.Driver
url:jdbc:postgresql://ip:port/db-name
共享WiFi
将带有无线网卡的电脑设置成热点(一般win10以上的系统)
右键转到设置，可编辑WiFi信息。
MyBatis 使用map类型作为参数，复杂查询（导出数据）
interface声明
/**
* @author Be.insighted
*/
@Mapper
public interface InterviewerMapper{
IPage query(IPage page, @Param("param") Map param);
} mapper.xml
对应的controller
@GetMapping(value = "/interviewer/en/export")
@ApiOperation(value = "面试官导出")
public void export(HttpServletResponse response, InterviewerParams params) throws IOException, IllegalAccessException {
LoginUser sysUser = (LoginUser) SecurityUtils.getSubject().getPrincipal();
String companyCode = sysUser.getCompanyId();
TInterviewer interviewer = interviewerConvert.toEntity(params);
interviewer.setCompanyCode(companyCode);
interviewer.setDelFlag(false);
IPage page = new Page();
page.setCurrent(params.getPageNo());
page.setSize(params.getPageSize());
Map paramMap = new HashMap<>();
String id = params.getIds();
if (StrUtil.isNotBlank(id)) {
EnInfo enInfo = enInfoService.getById(companyCode);
String companyName = enInfo.getEnName();
// 导出选中的数据
paramMap.put("ids", id.split(","));
List records = interviewerService.lambdaQuery().in(TInterviewer::getId, id.split(",")).list();
List temps = records.stream().map(item -> {
InterviewerVO vo = new InterviewerVO();
BeanUtils.copyProperties(item, vo);
vo.setCompanyName(companyName);
return vo;
}).collect(Collectors.toList());
List positionCodes = records.stream().map(TInterviewer::getPositionCode).collect(Collectors.toList());
List collect = positionCodes.stream().distinct().collect(Collectors.toList());
Map positionCode2NameMap = new HashMap<>(collect.size());
if (!CollectionUtils.isEmpty(collect)) {
List positions = positionService.lambdaQuery().in(TPosition::getPositionCode, collect).list();
positionCode2NameMap = positions.stream().collect(Collectors.toMap(TPosition::getPositionCode, TPosition::getPositionName));
for (int i = 0; i < temps.size(); i++) {
temps.get(i).setPositionName(positionCode2NameMap.get(temps.get(i).getPositionCode()));
}
}
if (!CollectionUtils.isEmpty(temps)) {
ExcelUtil excelUtil = new ExcelUtil();
excelUtil.setClose(false);
excelUtil.buildExcel(response, temps);
}
return;
} else {
paramMap.put("keyword", params.getKeyword());
paramMap.put("interviewerStatus", params.getInterviewerStatus());
paramMap.put("positionCode", params.getPositionCode());
paramMap.put("label", params.getLabel());
paramMap.put("companyCode", companyCode);
}
IPage pageInfo = interviewerService.query4En(page, paramMap);
List records = pageInfo.getRecords();
EnInfo enInfo = enInfoService.getById(companyCode);
String companyName = enInfo.getEnName();
List temps = records.stream().map(item -> {
InterviewerVO vo = new InterviewerVO();
BeanUtils.copyProperties(item, vo);
vo.setCompanyName(companyName);
return vo;
}).collect(Collectors.toList());
List positionCodes = records.stream().map(TInterviewer::getPositionCode).collect(Collectors.toList());
List collect = positionCodes.stream().distinct().collect(Collectors.toList());
Map positionCode2NameMap = new HashMap<>(collect.size());
if (!CollectionUtils.isEmpty(collect)) {
List positions = positionService.lambdaQuery().in(TPosition::getPositionCode, collect).list();
positionCode2NameMap = positions.stream().collect(Collectors.toMap(TPosition::getPositionCode, TPosition::getPositionName));
for (int i = 0; i < temps.size(); i++) {
temps.get(i).setPositionName(positionCode2NameMap.get(temps.get(i).getPositionCode()));
}
}
if (!CollectionUtils.isEmpty(temps)) {
ExcelUtil excelUtil = new ExcelUtil();
excelUtil.setClose(false);
excelUtil.buildExcel(response, temps);
}
}
导出Excel工具类
package com.*.utils;
import cn.com.*.annotation.Column;
import cn.com.*.annotation.Title;
import cn.hutool.core.collection.CollUtil;
import cn.hutool.core.date.DateUtil;
import cn.hutool.core.io.IoUtil;
import cn.hutool.core.util.ReflectUtil;
import cn.hutool.core.util.URLUtil;
import lombok.Data;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.util.CellRangeAddress;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.math.BigDecimal;
import java.net.URLEncoder;
import java.sql.Time;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/**
* @author Be.insighted
* @title: ExcelUtil
* @description: 默认每个sheet最多50000条数据 超过另起一个sheet
* @date @date 2023-11-14 15:42
*/
@Data
public class ExcelUtil {
/**
* 设置每行的宽度 每个值的index 对应第几列 如{1500,1000} 表示第一个1500长度 第二个1000长度 以此类推
*/
private int[] size;
/**
* 查询条件文本描述
*/
private String queryCriteria;
/**
* 是否关闭流 默认关闭
*/
private boolean close = true;
public ExcelUtil() {
this.queryCriteria = null;
}
public ExcelUtil(String queryCriteria) {
this.queryCriteria = queryCriteria;
}
public void buildExcel(HttpServletResponse response, List list, String filename) throws IOException, IllegalAccessException {
String name = Objects.isNull(filename) ? "" : filename;
OutputStream output = response.getOutputStream();
response.reset();
response.setCharacterEncoding("UTF-8");
name = URLEncoder.encode(name + DateUtil.format(new Date(), "yyyyMMddHHmmss") + ".xls", "UTF-8");
response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate");
response.setHeader("Content-Disposition", "attachment; filename=" + URLUtil.encode(name, "UTF-8"));
response.setHeader("Pragma", "no-cache");
response.setHeader("Expires", "0");
response.setContentType("application/msexcel;charset=utf-8");
List parameter = new ArrayList<>();
List fieldArrayList = new ArrayList<>();
if (CollUtil.isNotEmpty(list)) {
Class clazz = list.get(0).getClass();
Field[] fields = clazz.getDeclaredFields();
for (Field field : fields) {
if (field.getAnnotation(Column.class) != null) {
if (!StringUtils.isEmpty(field.getAnnotation(Column.class).name())) {
parameter.add(field.getAnnotation(Column.class).name());
} else {
parameter.add(field.getName());
}
fieldArrayList.add(field);
}
}
Title title = clazz.getDeclaredAnnotation(Title.class);
if (title != null) {
name = title.title();
}
} else {
return;
}
HSSFWorkbook hssfWorkbook = new HSSFWorkbook();
try {
final int sheetNum = (int) Math.ceil((float) list.size() / 50000);
HSSFCellStyle style = hssfWorkbook.createCellStyle();
style.setFillForegroundColor((short) 22);
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
style.setBorderBottom(BorderStyle.THIN);
style.setBorderLeft(BorderStyle.THIN);
style.setBorderRight(BorderStyle.THIN);
style.setBorderTop(BorderStyle.THIN);
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
//2022年4月8日17:16:09 增加，解决：导出数据之后数据并未换行，只有双击之后才展现换行效果
style.setWrapText(true);
HSSFFont font = hssfWorkbook.createFont();
font.setFontHeightInPoints((short) 12);
style.setFont(font);
HSSFCellStyle style2 = hssfWorkbook.createCellStyle();
style2.setAlignment(HorizontalAlignment.CENTER);
//垂直居中
style2.setVerticalAlignment(VerticalAlignment.CENTER);
//2022年4月8日17:16:09 增加，解决：导出数据之后数据并未换行，只有双击之后才展现换行效果
style2.setWrapText(true);
for (int n = 1; n <= sheetNum; n++) {
final HSSFSheet sheet = hssfWorkbook.createSheet("sheet" + "-" + n);
List toOut = null;
if (sheetNum > 1) {
if (n == sheetNum) {
toOut = getSubList(list, 0, list.size() - 1);
} else {
toOut = getSubList(list, 0, 50000);
}
} else {
toOut = list;
}
if (CollUtil.isNotEmpty(toOut)) {
Class clazz = toOut.get(0).getClass();
HSSFRow row1 = sheet.createRow(0);
HSSFCell cellTitle = row1.createCell(0);
cellTitle.setCellStyle(style);
Title title = clazz.getDeclaredAnnotation(Title.class);
if (title != null) {
if (StringUtils.isNotBlank(queryCriteria)) {
cellTitle.setCellValue(title.title() + " " + queryCriteria);
} else {
cellTitle.setCellValue(title.title());
}
sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, parameter.size() - 1));
}
if (getSize() != null && getSize().length > 0) {
for (int i = 0; i < getSize().length; i++) {
sheet.setColumnWidth(i, getSize()[i]);
}
} else {
int length = parameter.size();
this.size = new int[length];
for (int i = 0; i < length; i++) {
this.size[i] = 10000;
sheet.setColumnWidth(i, getSize()[i]);
}
}
HSSFRow row2 = sheet.createRow(1);
for (int i = 0; i < parameter.size(); i++) {
HSSFCell cell = row2.createCell(i);
cell.setCellStyle(style);
cell.setCellValue(parameter.get(i));
}
for (int i = 0; i < toOut.size(); i++) {
HSSFRow row = sheet.createRow(i + 2);
for (int j = 0; j < fieldArrayList.size(); j++) {
Field field = fieldArrayList.get(j);
Object value = ReflectUtil.getFieldValue(toOut.get(i), field);
HSSFCell cell = row.createCell(j);
cell.setCellStyle(style2);
Column column = field.getDeclaredAnnotation(Column.class);
if (value != null && !"null".equals(value)) {
String rule = column.timeFormat();
boolean rate = column.rate();
boolean condition = StringUtils.isNotBlank(rule) && (field.getType().equals(Date.class) ||
field.getType().equals(java.sql.Date.class) ||
field.getType().equals(Time.class) ||
field.getType().equals(Timestamp.class));
if (condition) {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(rule);
cell.setCellValue(simpleDateFormat.format(value));
} else if (rate && field.getType().equals(BigDecimal.class)) {
BigDecimal valueReal = (BigDecimal) value;
cell.setCellValue(valueReal.multiply(new BigDecimal("100")) + "%");
} else {
cell.setCellValue(value.toString());
}
} else {
if (field.getType().equals(Integer.class) || field.getType().equals(Long.class) ||
field.getType().equals(Double.class) || field.getType().equals(Float.class) ||
field.getType().equals(BigDecimal.class)) {
cell.setCellValue(0);
} else {
cell.setCellValue("");
}
}
}
}
}
}
hssfWorkbook.write(output);
} finally {
IoUtil.close(hssfWorkbook);
if (close) {
IoUtil.close(output);
}
}
}
/**
* 截取list 含左不含右
*
* @param list
* @param fromIndex
* @param toIndex
* @param
* @return
*/
private static List getSubList(List list, int fromIndex, int toIndex) {
List listClone = list;
List sub = listClone.subList(fromIndex, toIndex);
return new ArrayList<>(sub);
}
}
column、title注解定义
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.FIELD)
@Inherited
@Documented
public @interface Column {
String name() default "";
String timeFormat() default "";
boolean rate() default false;
}
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.TYPE)
@Inherited
@Documented
public @interface Title {
String title() default "";
}
导出的对象定义
@Data
@Accessors(chain = true)
@ApiModel(value = "面试官表示")
@Title(title = "面试官信息")
public class InterviewerVO implements Serializable {
private String id;
/**
* 企业编码
*/
@Excel(name = "企业编码")
@Column(name = "企业编码")
@Dict( dictTable="sys_depart",dicCode="id",dicText="depart_name")
private String companyCode;
/**
* 企业名称
*/
@Excel(name = "企业名称")
@Column(name = "企业名称")
private String companyName;
/**
* 面试官名称
*/
@Excel(name = "面试官名称")
@Column(name = "面试官名称")
private String interviewerName;
/**
* 面试官编号，取黄河人才网的id
*/
private String interviewerCode;
/**
* 部门
*/
private String department;
/**
* 岗位名称
*/
@Excel(name = "岗位名称")
@Column(name = "岗位名称")
private String positionName;
/**
* 岗位code
*/
private String positionCode;
/**
* 标签
*/
@Excel(name = "标签")
@Column(name = "标签")
private String label;
/**
* 联系方式
*/
@Excel(name = "联系方式")
@Column(name = "联系方式")
private String contactInfo;
/**
* 面试官类别
*/
@Dict(dicCode = "interviewer_type")
private String interviewerType;
/**
* 面试官状态
*/
@Dict(dicCode = "interviewer_status")
private String interviewerStatus;
/**
* 面试官有效标识
*/
private String validFlag;
/**
* 创建人姓名
*/
@Excel(name = "创建人")
@Column(name = "创建人")
private String createName;
/**
* 创建人工号
*/
private String createCode;
/**
* 创建时间
*/
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
private Date createTime;
/**
* 更新人
*/
private String updateName;
/**
* 更新时间
*/
private Date updateTime;
}