package org.jeecg.modules.system.aspect;
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import cn.hutool.core.util.ArrayUtil;
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import com.alibaba.fastjson.JSONObject;
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import com.fasterxml.jackson.annotation.JsonFormat;
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import com.fasterxml.jackson.core.JsonProcessingException;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import cn.hutool.core.util.ReflectUtil;
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import lombok.extern.slf4j.Slf4j;
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import org.jeecg.common.aspect.annotation.Dict;
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import org.jeecg.common.aspect.annotation.DictExt;
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import org.jeecg.common.aspect.annotation.DictList;
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import org.jeecg.common.aspect.annotation.FieldQuery;
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import org.jeecg.common.constant.CommonConstant;
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import org.jeecg.common.util.oConvertUtils;
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import org.jeecg.modules.system.service.ISysDictService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.stereotype.Service;
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import org.springframework.util.StringUtils;
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import java.lang.reflect.Field;
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import java.text.SimpleDateFormat;
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import java.util.*;
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/**
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* 字典字段翻译服务
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* 支持嵌套翻译
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* @since 2020/5/27
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*/
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@Service
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@Slf4j
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public class DicAspectService {
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@Autowired
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private ISysDictService dictService;
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/**
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* 本方法针对列表数据进行动态字典注入
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* 字典注入实现 通过对实体类添加注解@dict 来标识需要的字典内容,字典分为单字典code即可 ，table字典 code table text配合使用与原来jeecg的用法相同
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* 示例为SysUser 字段为sex 添加了注解@Dict(dicCode = "sex") 会在字典服务立马查出来对应的text 然后在请求list的时候将这个字典text，已字段名称加_dictText形式返回到前端
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* 例输入当前返回值的就会多出一个sex_dictText字段
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* {
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* sex:1,
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* sex_dictText:"男"
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* }
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* 前端直接取值sext_dictText在table里面无需再进行前端的字典转换了
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* customRender:function (text) {
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* if(text==1){
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* return "男";
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* }else if(text==2){
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* return "女";
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* }else{
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* return text;
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* }
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* }
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* 目前vue是这么进行字典渲染到table上的多了就很麻烦了 这个直接在服务端渲染完成前端可以直接用
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* @param records
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* @return
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*/
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public List<JSONObject> detailDict(List<Object> records){
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List<JSONObject> items = new ArrayList<>();
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FieldBatchQuery batchQuery = new FieldBatchQuery();
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boolean hasDict = false;
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for (Object record : records) {
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JSONObject item = parseDictItem(record);
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Field[] fieldsArray = oConvertUtils.getAllFields(record);
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for (int i = 0; i < fieldsArray.length; i++) {
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Field field = fieldsArray[i];
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if (field.getAnnotation(Dict.class) != null && records.size()<=500) {
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hasDict = true;
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String code = field.getAnnotation(Dict.class).dicCode();
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String text = field.getAnnotation(Dict.class).dicText();
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String table = field.getAnnotation(Dict.class).dictTable();
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String key = String.valueOf(item.get(field.getName()));
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//翻译字典值对应的txt
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String textValue = translateDictValue(code, text, table, key);
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item.put(field.getName() + CommonConstant.DICT_TEXT_SUFFIX, textValue);
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}
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// 字典翻译扩展功能，支持字典多字段匹配
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else if(field.getAnnotation(DictExt.class) != null && records.size() <= 500){
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hasDict = true;
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String[] code = field.getAnnotation(DictExt.class).dicCode();
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String text = field.getAnnotation(DictExt.class).dicText();
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String table = field.getAnnotation(DictExt.class).dicTable();
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String[] params = field.getAnnotation(DictExt.class).dicParams();
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String[] paramValues = this.getParamValues(item, params);
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String textValue = this.translateDictValue(code, text, table, paramValues);
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item.put(field.getName() + CommonConstant.DICT_TEXT_SUFFIX, textValue);
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item.put(field.getName(), ArrayUtil.join(paramValues, ","));
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}
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else if(field.getAnnotation(FieldQuery.class) != null && records.size() <= 500){
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FieldQuery ann = field.getAnnotation(FieldQuery.class);
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batchQuery.put(ann.dicTable(), ann.dicText(), ann.dicCode(),
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this.getParamValues(item, ann.dicParams()));
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}
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// 深度翻译list元素
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else if(field.getAnnotation(DictList.class) != null){
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Object fieldValue = ReflectUtil.getFieldValue(record, field);
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if(fieldValue == null){
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// no-op
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}
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else if(null != fieldValue && fieldValue instanceof List){
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try{
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List<JSONObject> listDetail = this.detailDict((List)fieldValue);
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item.put(field.getName(), listDetail);
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}catch (Exception e){
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log.error("字段翻译错误，index=" + i + ",fieldName=" + field.getName() + ",fieldValue=" + fieldValue + ",record=" + record);
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}
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}else{
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log.error("深度字典翻译只支持List类型，当前类型为" + fieldValue.getClass());
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}
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}
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//date类型默认转换string格式化日期
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if (field.getType().getName().equals("java.util.Date")&&field.getAnnotation(JsonFormat.class)==null&&item.get(field.getName())!=null){
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SimpleDateFormat aDate=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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item.put(field.getName(), aDate.format(new Date((Long) item.get(field.getName()))));
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}
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}
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if(records.size()>500 && hasDict){
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log.error("使用 @Dict注解超过500条记录请使用分页查询");
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}
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items.add(item);
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}
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// 批量查询关联数据
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if(batchQuery.size() > 0){
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Map<String, List<Map>> batchResult = new HashMap<>();
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batchQuery.forEach((queryKey, queryParam) -> {
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// 批量查询
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try {
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queryParam.setQueryResult(this.batchQueryFieldValue(queryParam.getQueryTable(),
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queryParam.getColumns(),
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queryParam.getParamName(),
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queryParam.getParamValues()));
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} catch (Exception e) {
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throw new RuntimeException(e);
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}
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});
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for (int i = 0; i < records.size(); i++) {
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Object record = records.get(i);
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JSONObject item = items.get(i);
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try {
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this.fillItemValue(record, item, batchQuery);
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} catch (Exception e) {
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e.printStackTrace();
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log.info("批量查询数据填充出错:{}", e.getMessage());
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}
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}
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}
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return items;
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}
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/**
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* 单表批量查询
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*
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* @param queryTable
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* @param columns
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* @param paramName
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* @param paramValues
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* @return
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*/
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private List<Map> batchQueryFieldValue(String queryTable, String[] columns,
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String paramName, String[] paramValues) throws Exception {
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try{
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return this.dictService.queryTableFieldByParams(queryTable, columns, paramName, paramValues);
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}catch (Exception e){
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log.error("FieldQuery查询错误", e);
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throw new Exception("FieldQuery查询错误");
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}
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}
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/**
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* 填充item批量查询数据
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* @param record
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* @param item
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* @param batchQuery
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*/
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private void fillItemValue(Object record, JSONObject item, FieldBatchQuery batchQuery) throws Exception{
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for (Field field : oConvertUtils.getAllFields(record)) {
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if(field.getAnnotation(FieldQuery.class) != null){
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FieldQuery fieldQuery = field.getAnnotation(FieldQuery.class);
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String[] paramValues = this.getParamValues(item, fieldQuery.dicParams());
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Object textValue = batchQuery.findResult(fieldQuery.dicTable(),
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fieldQuery.dicCode(), paramValues, fieldQuery.dicText());
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item.put(field.getName() + CommonConstant.DICT_TEXT_SUFFIX, textValue);
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item.put(field.getName(), ArrayUtil.join(paramValues, ","));
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}
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}
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}
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/**
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* 解析字典Item
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* @param record
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* @return
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*/
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private JSONObject parseDictItem(Object record) {
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ObjectMapper mapper = new ObjectMapper();
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String json="{}";
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try {
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//解决@JsonFormat注解解析不了的问题详见SysAnnouncement类的@JsonFormat
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json = mapper.writeValueAsString(record);
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} catch (JsonProcessingException e) {
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log.error("json解析失败"+e.getMessage(),e);
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}
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return JSONObject.parseObject(json);
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}
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/**
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* 获取参数数值
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* @param item
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* @param paramNames
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* @return
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*/
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private String[] getParamValues(JSONObject item, String[] paramNames) {
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// 获取实际参数
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String[] values = new String[paramNames.length];
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for (int i = 0; i < paramNames.length; i++) {
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String param = paramNames[i];
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if(param.startsWith("$")){
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values[i] = (String) item.get(param.substring(1));
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}else{
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values[i] = param;
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}
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if(values[i] == null) return null;
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if(values[i].indexOf("&&") > -1){
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log.error(">>>参数["+values[i]+"]包含非法字符','");
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return null;
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}
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}
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return values;
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}
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/**
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* 翻译字典文本
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*
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* @param code
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* @param text
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* @param table
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* @param paramValues
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* @return
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*/
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private String translateDictValue(String[] code, String text, String table, String[] paramValues) {
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if(paramValues == null || paramValues.length <=0 || oConvertUtils.isEmpty(table)){
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return null;
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}
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try{
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return this.dictService.queryTableDictByParams(table,text,
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ArrayUtil.join(code, "&&"),
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ArrayUtil.join(paramValues, "&&"));
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}catch (Exception e){
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log.error("字典翻译异常table={},text={},code={},paramValues={}", table, text, ArrayUtil.join(code, "&&"),ArrayUtil.join(paramValues, "&&") );
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throw e;
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}
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}
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/**
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* 翻译字典文本
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* @param code
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* @param text
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* @param table
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* @param key
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* @return
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*/
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private String translateDictValue(String code, String text, String table, String key) {
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if(oConvertUtils.isEmpty(key)) {
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return null;
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}
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StringBuffer textValue=new StringBuffer();
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String[] keys = key.split(",");
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for (String k : keys) {
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String tmpValue = null;
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if (k.trim().length() == 0) {
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continue; //跳过循环
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}
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if (!StringUtils.isEmpty(table)){
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tmpValue= dictService.queryTableDictTextByKey(table,text,code,k.trim());
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}else {
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tmpValue = dictService.queryDictTextByKey(code, k.trim());
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}
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if (tmpValue != null) {
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if (!"".equals(textValue.toString())) {
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textValue.append(",");
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}
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textValue.append(tmpValue);
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}
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}
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return textValue.toString();
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}
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}
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