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Item Number:
Foreword:
With the development of society, all walks of life in society are taking advantage of the information age. The dominance and popularity of computers necessitated the development of various information systems.
Children's vaccine appointment management, the main modules include viewing homepage, site management (carousel map, bulletin board) user management (administrator, system user) content management (information list, category list) more management (reservation order, vaccine information, Cancel appointment, vaccine purchase, vaccine return) and other functions. The administrator in the system is mainly to store and manage all kinds of information safely and effectively, and can also manage, update and maintain the system, and has corresponding operation authority on the background.
In order to realize the various functions of children's vaccine appointment management, it needs the strong support of the background database. A large amount of data, such as administrators verifying registration information, collecting user information, and related information obtained through analysis, are all managed by the database management system. In this paper, the database server uses Mysql as the background database, which makes the Web and the database closely linked. During the design process, the system code is fully guaranteed to be readable, practical, easy to expand, universal, easy to maintain later, easy to operate, and the page is concise.
The development of this system makes it more convenient and quick to obtain the reservation management information of children's vaccines, and also makes the management information of children's vaccine reservations more systematic and orderly. The system interface is more friendly and easy to operate.
1. Project Introduction
The requirement analysis of children's vaccine appointment management is carried out from the aspects of function, data flow, feasibility, and operating environment. The database and functions of children's vaccine appointment management are designed in detail. The main interface design and related component design are analyzed, and the specific realization of children's vaccine appointment management is introduced.
Using Java technology to obtain data from the database and write data into the database, the system can directly perform various operations on the database, and add dynamic content to the web page, so as to realize various basic functions required for children's vaccine appointment management.
System users are divided into front-end users and background management users: the following figure shows an example diagram of the functions of each user role:
Second, the environment introduction
Locale: Java: jdk1.8
Database: Mysql: mysql5.7
Application server: Tomcat: tomcat8.5.31
Development tools: IDEA or eclipse
Background development technology: Springboot+Mybatisplus
Front-end development technology: Vue+ElementUi
Three, system display
Administrator login. The administrator logs in to the system by entering user, password, role and other information, as shown in Figure 3-1.
Figure 3-1 Administrator login interface diagram
The administrator logs in to enter the child vaccine appointment management and can view the administrator: home page, site management (carousel map, bulletin board) user management (administrator, system user) content management (information list, category list) more management (reservation order, Vaccine information, cancellation of appointment, vaccine purchase, vaccine return), etc., as shown in Figure 3-2.
Figure 3-2 Home page interface diagram of the administrator function
User management, on the user management page, you can view information such as index, user account, password, user name, gender, age, contact number, email address, ID number, home address, personal photo and other information, and can modify or delete them as needed and so on, as shown in Figure 3-3.
Figure 3-3 User management interface diagram
Vaccine information, on the vaccine information page, you can view the index, vaccine number, vaccine name, vaccine type, vaccine details, vaccinated population and other information, and can modify or delete as needed, as shown in Figure 3-4.
Figure 3-4 Vaccine information interface diagram
Reservation order information, on the reservation order information page, you can view the index, user number, order number, vaccine number, vaccine name, vaccine price, vaccination unit, vaccination doctor and other information, and can modify or delete as needed, as shown in Figure 3 -5 shown.
Figure 3-5 Interface Diagram of Reservation Order Information
To cancel an appointment, you can view the index, vaccine name, vaccine number, vaccine name, vaccine price, vaccination unit, unit address, vaccination doctor and other information on the cancel appointment page, and can modify or delete as needed, as shown in Figure 5-6 shown.
Figure 3-6 Cancel reservation interface
User registration, on the user registration page, complete user registration by filling in user account, password, user name, age, contact number, email address, identity and other information, as shown in Figure 3-7.
Figure 3-7 User registration interface diagram
After logging in to the background, the user can view the homepage, announcements, epidemic information, vaccine information, etc., as shown in Figure 3-9.
Figure 3-9 User Function Interface Diagram
Vaccine information, on the vaccine information page, you can view the vaccine number, vaccine name, vaccine picture and other information operations, as shown in Figure 3-10.
Figure 3-10 Vaccine information interface diagram
Reservation order management, on the reservation order management page, you can view the index, vaccine name, vaccine number, vaccination population, vaccine price, vaccination unit, unit address, vaccination doctor, vaccination time and other information, as shown in Figure 3-11.
Figure 3-11 interface diagram of reservation order
Fourth, the core code display
The top-level Controller of system abstraction:
package com.project.demo.controller.base;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.project.demo.service.base.BaseService;
import lombok.Setter;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.multipart.MultipartFile;
import javax.persistence.Query;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
*/
@Slf4j
public class BaseController<E, S extends BaseService<E>> {
@Setter
protected S service;
@PostMapping("/add")
@Transactional
public Map<String, Object> add(HttpServletRequest request) throws IOException {
service.insert(service.readBody(request.getReader()));
return success(1);
}
@Transactional
public Map<String, Object> addMap(Map<String,Object> map){
service.insert(map);
return success(1);
}
@PostMapping("/set")
@Transactional
public Map<String, Object> set(HttpServletRequest request) throws IOException {
service.update(service.readQuery(request), service.readConfig(request), service.readBody(request.getReader()));
return success(1);
}
@RequestMapping(value = "/del")
@Transactional
public Map<String, Object> del(HttpServletRequest request) {
service.delete(service.readQuery(request), service.readConfig(request));
return success(1);
}
@RequestMapping("/get_obj")
public Map<String, Object> obj(HttpServletRequest request) {
Query select = service.select(service.readQuery(request), service.readConfig(request));
List resultList = select.getResultList();
if (resultList.size() > 0) {
JSONObject jsonObject = new JSONObject();
jsonObject.put("obj",resultList.get(0));
return success(jsonObject);
} else {
return success(null);
}
}
@RequestMapping("/get_list")
public Map<String, Object> getList(HttpServletRequest request) {
Map<String, Object> map = service.selectToPage(service.readQuery(request), service.readConfig(request));
return success(map);
}
@RequestMapping("/list_group")
public Map<String, Object> listGroup(HttpServletRequest request) {
Map<String, Object> map = service.selectToList(service.readQuery(request), service.readConfig(request));
return success(map);
}
@RequestMapping("/bar_group")
public Map<String, Object> barGroup(HttpServletRequest request) {
Map<String, Object> map = service.selectBarGroup(service.readQuery(request), service.readConfig(request));
return success(map);
}
@RequestMapping(value = {"/count_group", "/count"})
public Map<String, Object> count(HttpServletRequest request) {
Query count = service.count(service.readQuery(request), service.readConfig(request));
return success(count.getResultList());
}
@RequestMapping(value = {"/sum_group", "/sum"})
public Map<String, Object> sum(HttpServletRequest request) {
Query count = service.sum(service.readQuery(request), service.readConfig(request));
return success(count.getResultList());
}
@RequestMapping(value = {"/avg_group", "/avg"})
public Map<String, Object> avg(HttpServletRequest request) {
Query count = service.avg(service.readQuery(request), service.readConfig(request));
return success(count.getResultList());
}
@PostMapping("/upload")
public Map<String, Object> upload(@RequestParam("file") MultipartFile file) {
log.info("进入方法");
if (file.isEmpty()) {
return error(30000, "没有选择文件");
}
try {
//判断有没路径，没有则创建
String filePath = System.getProperty("user.dir") + "\\target\\classes\\static\\upload\\";
File targetDir = new File(filePath);
if (!targetDir.exists() && !targetDir.isDirectory()) {
if (targetDir.mkdirs()) {
log.info("创建目录成功");
} else {
log.error("创建目录失败");
}
}
// String path = ResourceUtils.getURL("classpath:").getPath() + "static/upload/";
// String filePath = path.replace('/', '\\').substring(1, path.length());
String fileName = file.getOriginalFilename();
File dest = new File(filePath + fileName);
log.info("文件路径:{}", dest.getPath());
log.info("文件名:{}", dest.getName());
file.transferTo(dest);
JSONObject jsonObject = new JSONObject();
jsonObject.put("url", "/api/upload/" + fileName);
return success(jsonObject);
} catch (IOException e) {
log.info("上传失败：{}", e.getMessage());
}
return error(30000, "上传失败");
}
@PostMapping("/import_db")
public Map<String, Object> importDb(@RequestParam("file") MultipartFile file) throws IOException {
service.importDb(file);
return success(1);
}
@RequestMapping("/export_db")
public void exportDb(HttpServletRequest request, HttpServletResponse response) throws IOException {
HSSFWorkbook sheets = service.exportDb(service.readQuery(request), service.readConfig(request));
response.setContentType("application/octet-stream");
response.setHeader("Content-disposition", "attachment;filename=employee.xls");
response.flushBuffer();
sheets.write(response.getOutputStream());
sheets.close();
}
public Map<String, Object> success(Object o) {
Map<String, Object> map = new HashMap<>();
if (o == null) {
map.put("result", null);
return map;
}
if (o instanceof List) {
if (((List) o).size() == 1) {
o = ((List) o).get(0);
map.put("result", o);
}else {
String jsonString = JSONObject.toJSONString(o);
JSONArray objects = service.covertArray(JSONObject.parseArray(jsonString));
map.put("result", objects);
}
} else if (o instanceof Integer || o instanceof String) {
map.put("result", o);
} else {
String jsonString = JSONObject.toJSONString(o);
JSONObject jsonObject = JSONObject.parseObject(jsonString);
JSONObject j = service.covertObject(jsonObject);
map.put("result", j);
}
return map;
}
public Map<String, Object> error(Integer code, String message) {
Map<String, Object> map = new HashMap<>();
map.put("error", new HashMap<String, Object>(4) {
{
put("code", code);
put("message", message);
}});
return map;
}
}
The top-level Service of the system abstraction:
package com.project.demo.service.base;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.project.demo.constant.FindConfig;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.hssf.usermodel.*;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import javax.servlet.http.HttpServletRequest;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.ParameterizedType;
import java.net.URLDecoder;
import java.security.MessageDigest;
import java.util.*;
/**
*/
@Slf4j
public class BaseService <E>{
@Autowired
@PersistenceContext
private EntityManager entityManager;
Class<E> eClass = (Class<E>)((ParameterizedType)getClass().getGenericSuperclass()).getActualTypeArguments()[0];
private final String table = humpToLine(eClass.getSimpleName());
public Query runEntitySql(String sql){
return entityManager.createNativeQuery(sql, eClass);
}
public Query runCountSql(String sql){
return entityManager.createNativeQuery(sql);
}
public void insert(Map<String,Object> body){
StringBuffer sql = new StringBuffer("INSERT INTO ");
sql.append("`").append(table).append("`").append(" (");
for (Map.Entry<String,Object> entry:body.entrySet()){
sql.append("`"+humpToLine(entry.getKey())+"`").append(",");
}
sql.deleteCharAt(sql.length()-1);
sql.append(") VALUES (");
for (Map.Entry<String,Object> entry:body.entrySet()){
Object value = entry.getValue();
if (value instanceof String){
sql.append("'").append(entry.getValue()).append("'").append(",");
}else {
sql.append(entry.getValue()).append(",");
}
}
sql.deleteCharAt(sql.length() - 1);
sql.append(")");
log.info("[{}] - 插入操作：{}",table,sql);
Query query = runCountSql(sql.toString());
query.executeUpdate();
}
@Transactional
public void update(Map<String,String> query,Map<String,String> config,Map<String,Object> body){
StringBuffer sql = new StringBuffer("UPDATE ").append("`").append(table).append("`").append(" SET ");
for (Map.Entry<String,Object> entry:body.entrySet()){
Object value = entry.getValue();
if (value instanceof String){
sql.append("`"+humpToLine(entry.getKey())+"`").append("=").append("'").append(value).append("'").append(",");
}else {
sql.append("`"+humpToLine(entry.getKey())+"`").append("=").append(value).append(",");
}
}
sql.deleteCharAt(sql.length()-1);
sql.append(toWhereSql(query,"0".equals(config.get(FindConfig.LIKE))));
// sql.append(";");
log.info("[{}] - 更新操作：{}",table,sql);
Query query1 = runCountSql(sql.toString());
query1.executeUpdate();
}
public Map<String,Object> selectToPage(Map<String,String> query,Map<String,String> config){
Query select = select(query, config);
Map<String,Object> map = new HashMap<>();
map.put("list",select.getResultList());
map.put("count",count(query,config).getSingleResult());
return map;
}
public Map<String,Object> selectToList(Map<String,String> query,Map<String,String> config){
Query select = selectGroupCount(query, config);
Map<String,Object> map = new HashMap<>();
map.put("list",select.getResultList());
return map;
}
public Map<String,Object> selectBarGroup(Map<String,String> query,Map<String,String> config){
Query select = barGroup(query, config);
Map<String,Object> map = new HashMap<>();
map.put("list",select.getResultList());
return map;
}
public Query barGroup(Map<String,String> query,Map<String,String> config){
StringBuffer sql = new StringBuffer(" SELECT ");
if (config.get(FindConfig.GROUP_BY) != null && !"".equals(config.get(FindConfig.GROUP_BY))){
sql.append(config.get(FindConfig.GROUP_BY));
if (config.get(FindConfig.FIELD) != null && !"".equals(config.get(FindConfig.FIELD))){
String[] fieldList = config.get(FindConfig.FIELD).split(",");
for (int i=0;i<fieldList.length;i++)
sql.append(" ,SUM(").append(fieldList[i]).append(")");
}
sql.append(" FROM ").append("`").append(table).append("`");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
sql.append(" ").append("GROUP BY ").append(config.get(FindConfig.GROUP_BY));
}else {
sql.append(" SUM(").append(config.get(FindConfig.GROUP_BY)).append(") FROM ").append("`").append(table).append("`");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
}
log.info("[{}] - 查询操作，sql: {}",table,sql);
return runCountSql(sql.toString());
}
public Query selectGroupCount(Map<String,String> query,Map<String,String> config){
StringBuffer sql = new StringBuffer("select COUNT(*) AS count_value, ");
sql.append(config.get(FindConfig.GROUP_BY)).append(" ");
sql.append("from ").append("`").append(table).append("` ");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
if (config.get(FindConfig.GROUP_BY) != null && !"".equals(config.get(FindConfig.GROUP_BY))){
sql.append("group by ").append(config.get(FindConfig.GROUP_BY)).append(" ");
}
log.info("[{}] - 查询操作，sql: {}",table,sql);
return runCountSql(sql.toString());
}
public Query select(Map<String,String> query,Map<String,String> config){
StringBuffer sql = new StringBuffer("select ");
sql.append(config.get(FindConfig.FIELD) == null || "".equals(config.get(FindConfig.FIELD)) ? "*" : config.get(FindConfig.FIELD)).append(" ");
sql.append("from ").append("`").append(table).append("`").append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
if (config.get(FindConfig.GROUP_BY) != null && !"".equals(config.get(FindConfig.GROUP_BY))){
sql.append("group by ").append(config.get(FindConfig.GROUP_BY)).append(" ");
}
if (config.get(FindConfig.ORDER_BY) != null && !"".equals(config.get(FindConfig.ORDER_BY))){
sql.append("order by ").append(config.get(FindConfig.ORDER_BY)).append(" ");
}
if (config.get(FindConfig.PAGE) != null && !"".equals(config.get(FindConfig.PAGE))){
int page = config.get(FindConfig.PAGE) != null && !"".equals(config.get(FindConfig.PAGE)) ? Integer.parseInt(config.get(FindConfig.PAGE)) : 1;
int limit = config.get(FindConfig.SIZE) != null && !"".equals(config.get(FindConfig.SIZE)) ? Integer.parseInt(config.get(FindConfig.SIZE)) : 10;
sql.append(" limit ").append( (page-1)*limit ).append(" , ").append(limit);
}
log.info("[{}] - 查询操作，sql: {}",table,sql);
return runEntitySql(sql.toString());
}
@Transactional
public void delete(Map<String,String> query,Map<String,String> config){
StringBuffer sql = new StringBuffer("DELETE FROM ").append("`").append(table).append("`").append(" ");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.GROUP_BY))));
log.info("[{}] - 删除操作：{}",table,sql);
Query query1 = runCountSql(sql.toString());
query1.executeUpdate();
}
public Query count(Map<String,String> query,Map<String,String> config){
StringBuffer sql = new StringBuffer("SELECT ");
// log.info("拼接统计函数前");
if (config.get(FindConfig.GROUP_BY) != null && !"".equals(config.get(FindConfig.GROUP_BY))){
sql.append(config.get(FindConfig.GROUP_BY)).append(" ,COUNT(").append(config.get(FindConfig.GROUP_BY)).append(") FROM ").append("`").append(table).append("`");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
// sql.append(" ").append("GROUP BY ").append(config.get(FindConfig.GROUP_BY));
}else {
sql.append("COUNT(*) FROM ").append("`").append(table).append("`");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
}
log.info("[{}] - 统计操作，sql: {}",table,sql);
return runCountSql(sql.toString());
}
public Query sum(Map<String,String> query,Map<String,String> config){
StringBuffer sql = new StringBuffer(" SELECT ");
if (config.get(FindConfig.GROUP_BY) != null && !"".equals(config.get(FindConfig.GROUP_BY))){
sql.append(config.get(FindConfig.GROUP_BY)).append(" ,SUM(").append(config.get(FindConfig.FIELD)).append(") FROM ").append("`").append(table).append("`");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
sql.append(" ").append("GROUP BY ").append(config.get(FindConfig.GROUP_BY));
}else {
sql.append(" SUM(").append(config.get(FindConfig.FIELD)).append(") FROM ").append("`").append(table).append("`");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
}
log.info("[{}] - 查询操作，sql: {}",table,sql);
return runCountSql(sql.toString());
}
public Query avg(Map<String,String> query,Map<String,String> config){
StringBuffer sql = new StringBuffer(" SELECT ");
if (config.get(FindConfig.GROUP_BY) != null && !"".equals(config.get(FindConfig.GROUP_BY))){
sql.append(config.get(FindConfig.GROUP_BY)).append(" ,AVG(").append(config.get(FindConfig.FIELD)).append(") FROM ").append("`").append(table).append("`");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
sql.append(" ").append("GROUP BY ").append(config.get(FindConfig.GROUP_BY));
}else {
sql.append(" AVG(").append(config.get(FindConfig.FIELD)).append(") FROM ").append("`").append(table).append("`");
sql.append(toWhereSql(query, "0".equals(config.get(FindConfig.LIKE))));
}
log.info("[{}] - 查询操作，sql: {}",table,sql);
return runCountSql(sql.toString());
}
public String toWhereSql(Map<String,String> query, Boolean like) {
if (query.size() > 0) {
try {
StringBuilder sql = new StringBuilder(" WHERE ");
for (Map.Entry<String, String> entry : query.entrySet()) {
if (entry.getKey().contains(FindConfig.MIN_)) {
String min = humpToLine(entry.getKey()).replace("_min", "");
sql.append("`"+min+"`").append(" >= '").append(URLDecoder.decode(entry.getValue(), "UTF-8")).append("' and ");
continue;
}
if (entry.getKey().contains(FindConfig.MAX_)) {
String max = humpToLine(entry.getKey()).replace("_max", "");
sql.append("`"+max+"`").append(" <= '").append(URLDecoder.decode(entry.getValue(), "UTF-8")).append("' and ");
continue;
}
if (like == true) {
sql.append("`"+humpToLine(entry.getKey())+"`").append(" LIKE '%").append(URLDecoder.decode(entry.getValue(), "UTF-8")).append("%'").append(" and ");
} else {
sql.append("`"+humpToLine(entry.getKey())+"`").append(" = '").append(URLDecoder.decode(entry.getValue(), "UTF-8")).append("'").append(" and ");
}
}
sql.delete(sql.length() - 4, sql.length());
sql.append(" ");
return sql.toString();
} catch (UnsupportedEncodingException e) {
log.info("拼接sql 失败：{}", e.getMessage());
}
}
return "";
}
public Map<String,Object> readBody(BufferedReader reader){
BufferedReader br = null;
StringBuilder sb = new StringBuilder("");
try{
br = reader;
String str;
while ((str = br.readLine()) != null){
sb.append(str);
}
br.close();
String json = sb.toString();
return JSONObject.parseObject(json, Map.class);
}catch (IOException e){
e.printStackTrace();
}finally{
if (null != br){
try{
br.close();
}catch (IOException e){
e.printStackTrace();
}
}
}
return null;
}
public Map<String,String> readQuery(HttpServletRequest request){
String queryString = request.getQueryString();
if (queryString != null && !"".equals(queryString)) {
String[] querys = queryString.split("&");
Map<String, String> map = new HashMap<>();
for (String query : querys) {
String[] q = query.split("=");
map.put(q[0], q[1]);
}
map.remove(FindConfig.PAGE);
map.remove(FindConfig.SIZE);
map.remove(FindConfig.LIKE);
map.remove(FindConfig.ORDER_BY);
map.remove(FindConfig.FIELD);
map.remove(FindConfig.GROUP_BY);
map.remove(FindConfig.MAX_);
map.remove(FindConfig.MIN_);
return map;
}else {
return new HashMap<>();
}
}
public Map<String,String> readConfig(HttpServletRequest request){
Map<String,String> map = new HashMap<>();
map.put(FindConfig.PAGE,request.getParameter(FindConfig.PAGE));
map.put(FindConfig.SIZE,request.getParameter(FindConfig.SIZE));
map.put(FindConfig.LIKE,request.getParameter(FindConfig.LIKE));
map.put(FindConfig.ORDER_BY,request.getParameter(FindConfig.ORDER_BY));
map.put(FindConfig.FIELD,request.getParameter(FindConfig.FIELD));
map.put(FindConfig.GROUP_BY,request.getParameter(FindConfig.GROUP_BY));
map.put(FindConfig.MAX_,request.getParameter(FindConfig.MAX_));
map.put(FindConfig.MIN_,request.getParameter(FindConfig.MIN_));
return map;
}
public void importDb(MultipartFile file) throws IOException {
if (file.isEmpty()) {
return;
}
List<Map<String,String>> body = new ArrayList<>();
String fileName = file.getOriginalFilename();
if (fileName == null){
return;
}
String suffix = fileName.substring(fileName.lastIndexOf(".")+1);
InputStream ins = file.getInputStream();
Workbook wb = null;
if(suffix.equals("xlsx")){
wb = new XSSFWorkbook(ins);
}else{
wb = new HSSFWorkbook(ins);
}
Sheet sheet = wb.getSheetAt(0);
if(null != sheet){
for(int line = 0; line <= sheet.getLastRowNum();line++){
Row row = sheet.getRow(line);
if(null == row){
continue;
}
Iterator<Cell> cellIterator = row.cellIterator();
StringBuffer sql = new StringBuffer("INSERT INTO ").append(table).append(" VALUES (null,");
while (cellIterator.hasNext()){
sql.append(cellIterator.next().getStringCellValue()).append(",");
}
sql.deleteCharAt(sql.length());
sql.append(")");
runCountSql(sql.toString());
}
}
}
public HSSFWorkbook exportDb(Map<String,String> query,Map<String,String> config){
Query select = select(query, config);
List<Map<String,String>> resultList = select.getResultList();
HSSFWorkbook workbook = new HSSFWorkbook();
HSSFSheet sheet = workbook.createSheet(table);
HSSFCellStyle headerStyle = workbook.createCellStyle();
headerStyle.setFillForegroundColor(IndexedColors.YELLOW.index);
headerStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);
for (int i = 0; i < resultList.size(); i++) {
HSSFRow row = sheet.createRow(i);
Map<String,String> map = resultList.get(i);
int j = 0;
for (Map.Entry<String,String> entry:map.entrySet()){
row.createCell(j).setCellValue(new HSSFRichTextString(entry.getValue()));
}
}
return workbook;
}
@Transactional
public void save(E e){
String s = JSONObject.toJSONString(e);
Map map = JSONObject.parseObject(s, Map.class);
insert(map);
}
public E findOne(Map<String, String> map){
try {
Query select = select(map, new HashMap<>());
return (E) select.getSingleResult();
}catch (Exception e){
return null;
}
}
public String encryption(String plainText) {
String re_md5 = new String();
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(plainText.getBytes());
byte b[] = md.digest();
int i;
StringBuffer buf = new StringBuffer("");
for (int offset = 0; offset < b.length; offset++) {
i = b[offset];
if (i < 0)
i += 256;
if (i < 16)
buf.append("0");
buf.append(Integer.toHexString(i));
}
re_md5 = buf.toString();
} catch (Exception e) {
e.printStackTrace();
}
return re_md5;
}
public static String humpToLine(String str) {
if (str == null) {
return null;
}
// 将驼峰字符串转换成数组
char[] charArray = str.toCharArray();
StringBuilder buffer = new StringBuilder();
//处理字符串
for (int i = 0, l = charArray.length; i < l; i++) {
if (charArray[i] >= 65 && charArray[i] <= 90) {
buffer.append("_").append(charArray[i] += 32);
} else {
buffer.append(charArray[i]);
}
}
String s = buffer.toString();
if (s.startsWith("_")){
return s.substring(1);
}else {
return s;
}
}
public JSONObject covertObject(JSONObject object) {
if (object == null) {
return null;
}
JSONObject newObject = new JSONObject();
Set<String> set = object.keySet();
for (String key : set) {
Object value = object.get(key);
if (value instanceof JSONArray) {
//数组
value = covertArray(object.getJSONArray(key));
} else if (value instanceof JSONObject) {
//对象
value = covertObject(object.getJSONObject(key));
}
//这个方法自己写的改成下划线
key = humpToLine(key);
newObject.put(key, value);
}
return newObject;
}
public JSONArray covertArray(JSONArray array) {
if (array == null) {
return null;
}
JSONArray newArray = new JSONArray();
for (int i = 0; i < array.size(); i++) {
Object value = array.get(i);
if (value instanceof JSONArray) {
//数组
value = covertArray(array.getJSONArray(i));
} else if (value instanceof JSONObject) {
//对象
value = covertObject(array.getJSONObject(i));
}
newArray.add(value);
}
return newArray;
}
}
V. Project Summary
With the rapid development of society, the impact of computers is comprehensive and in-depth. With the continuous improvement of people's living standards, people's requirements for information management of children's vaccine appointments in daily life are also constantly improving, and the number of people who need children's vaccine appointments is increasing, making the development of children's vaccine appointment management a necessary and urgent matter. The management of children's vaccine appointments mainly uses computers to manage the information required for the management of children's vaccines to increase user choices, and at the same time facilitate the timely query and modification of user information and the timely understanding of user information. Children's vaccine appointment management brings more convenience to users, and the system meets users' needs by cooperating with database management system software.