构造Mapper.selectPage分页查询条件
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Wang.Huan
@@ -6,5 +6,13 @@ package com.openhis.common.constant;
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* @author system
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*/
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public class CommonConstants {
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/**
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* 租户ID字段名称
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*/
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public static final String TENANT_ID = "tenant_id";
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public static final String S_TIME = "STime";
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public static final String E_TIME = "ETime";
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}
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@@ -0,0 +1,151 @@
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package com.openhis.common.utils;
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import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
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import com.core.common.utils.DateUtils;
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import com.core.common.utils.SecurityUtils;
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import com.openhis.common.constant.CommonConstants;
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import javax.servlet.http.HttpServletRequest;
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import java.lang.reflect.Field;
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import java.text.ParseException;
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import java.text.SimpleDateFormat;
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import java.time.format.DateTimeFormatter;
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import java.time.format.DateTimeParseException;
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import java.util.Date;
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import java.util.HashSet;
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import java.util.Map;
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/**
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* His查询工具类
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*/
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public class HisQueryUtils {
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/**
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* 条件查询构造器
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*
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* @param entity 传参实体
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* @param searchKey 模糊查询关键字
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* @param searchFields 支持模糊查询的字段集合 ; 不需要模糊查询传 null 即可
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* @param request 请求
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* @return 构造条件
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*/
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public static <T> QueryWrapper<T> buildQueryWrapper(T entity, String searchKey, HashSet<String> searchFields, HttpServletRequest request) {
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QueryWrapper<T> queryWrapper = new QueryWrapper<>();
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// 添加租户id查询条件
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queryWrapper.eq(CommonConstants.TENANT_ID, getCurrentTenantId());
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if (entity == null) {
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return queryWrapper;
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}
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// 反射获取实体类的字段
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Field[] fields = entity.getClass().getDeclaredFields();
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for (Field field : fields) {
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field.setAccessible(true);
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try {
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Object value = field.get(entity);
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if (value != null && !value.toString().equals("")) {
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//String fieldName = field.getName();
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// 将驼峰命名的字段名转换为下划线命名的数据库字段名
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String fieldName = camelToUnderline(field.getName());
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// 处理等于条件
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queryWrapper.eq(fieldName, value);
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}
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} catch (IllegalAccessException e) {
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e.printStackTrace();
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}
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}
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// 处理模糊查询关键字
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if (searchKey != null && !searchKey.isEmpty() && searchFields != null && !searchFields.isEmpty()) {
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queryWrapper.and(wrapper -> {
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for (String field : searchFields) {
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wrapper.or().like(field, searchKey);
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}
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});
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}
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// 处理时间段查询
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DateTimeFormatter formatter = DateTimeFormatter.ofPattern(DateUtils.YYYY_MM_DD);
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// DateTimeFormatter formatter2 = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
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Map<String, String[]> parameterMap = request.getParameterMap();
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for (Map.Entry<String, String[]> entry : parameterMap.entrySet()) {
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String paramName = entry.getKey();
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// 检查参数名是否以 "STime" 或 "ETime" 结尾
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if (paramName.endsWith(CommonConstants.S_TIME) || paramName.endsWith(CommonConstants.E_TIME)) {
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// 提取字段名（去掉 "STime" 或 "ETime" 后缀）
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String fieldName = paramName.substring(0, paramName.length() - 5);
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// 驼峰转下划线
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String dbFieldName = camelToUnderline(fieldName);
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// 获取对应的 STime 和 ETime 值
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String startValue = getParameterValue(request, fieldName + CommonConstants.S_TIME);
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String endValue = getParameterValue(request, fieldName + CommonConstants.E_TIME);
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// 如果 Start 和 End 都有值，则添加时间段查询条件
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if (startValue != null && endValue != null) {
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try {
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SimpleDateFormat dateFormat;
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if (isValidFormat(formatter, startValue)) {
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dateFormat = new SimpleDateFormat(DateUtils.YYYY_MM_DD);
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} else {
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dateFormat = new SimpleDateFormat(DateUtils.YYYY_MM_DD_HH_MM_SS);
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}
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Date startDate = dateFormat.parse(startValue);
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Date endDate = dateFormat.parse(endValue);
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queryWrapper.ge(dbFieldName, startDate); // 大于等于 STime
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queryWrapper.le(dbFieldName, endDate); // 小于等于 ETime
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} catch (ParseException e) {
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e.printStackTrace();
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}
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}
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}
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}
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return queryWrapper;
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}
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/**
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* 检查时间字符串是否符合指定格式
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*
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* @param formatter 时间格式
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* @param dateStr 时间字符串
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* @return 是否匹配
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*/
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private static boolean isValidFormat(DateTimeFormatter formatter, String dateStr) {
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try {
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formatter.parse(dateStr);
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return true;
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} catch (DateTimeParseException e) {
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return false;
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}
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}
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/**
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* 从 request 中获取参数值
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*/
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private static String getParameterValue(HttpServletRequest request, String paramName) {
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String[] values = request.getParameterValues(paramName);
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return (values != null && values.length > 0) ? values[0] : null;
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}
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/**
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* 将驼峰命名的字段名转换为下划线命名的数据库字段名
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*/
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private static String camelToUnderline(String camel) {
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StringBuilder result = new StringBuilder();
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for (char c : camel.toCharArray()) {
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if (Character.isUpperCase(c)) {
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result.append("_").append(Character.toLowerCase(c));
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} else {
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result.append(c);
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}
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}
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return result.toString();
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}
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/**
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* 获取当前租户 ID
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*/
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private static Integer getCurrentTenantId() {
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// 获取当前登录用户的租户 ID
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if (SecurityUtils.getAuthentication() != null) {
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return SecurityUtils.getLoginUser().getTenantId();
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}
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return 0;
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}
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}
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