基于Java SSM MySQL实现音乐网站系统【优质毕业设计、课程设计项目】.zip

package com.project.demo.service.base; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONArray; import com.alibaba.fastjson.JSONObject; import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper; import com.project.demo.constant.FindConfig; import com.project.demo.dao.base.BaseMapper; 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.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 private BaseMapper<E> baseMapper; Class<E> eClass = (Class<E>)((ParameterizedType)getClass().getGenericSuperclass()).getActualTypeArguments()[0]; private final String table = humpToLine(eClass.getSimpleName()); public List selectBaseList(String select) { List<Map<String,Object>> mapList = baseMapper.selectBaseList(select); List<E> list = new ArrayList<>(); for (Map<String,Object> map:mapList) { list.add(JSON.parseObject(JSON.toJSONString(map),eClass)); } return list; } public int selectBaseCount(String sql) { return baseMapper.selectBaseCount(sql); } public int deleteBaseSql(String sql) { return baseMapper.deleteBaseSql(sql); } public int updateBaseSql(String sql) { return baseMapper.updateBaseSql(sql); } public void insert(Map<String,Object> body){ E entity = JSON.parseObject(JSON.toJSONString(body),eClass); baseMapper.insert(entity); log.info("[{}] - 插入操作：{}",entity); } @Transactional public void update(Map<String,String> query,Map<String,String> config,Map<String,Object> body){ QueryWrapper wrapper = new QueryWrapper<E>(); toWhereWrapper(query,"0".equals(config.get(FindConfig.LIKE)),wrapper); E entity = JSON.parseObject(JSON.toJSONString(body),eClass); baseMapper.update(entity,wrapper); log.info("[{}] - 更新操作：{}",entity); } public Map<String,Object> selectToPage(Map<String,String> query,Map<String,String> config){ Map<String,Object> map = new HashMap<>(); List list = baseMapper.selectBaseList(select(query, config)); map.put("list",list); map.put("count",baseMapper.selectBaseCount(count(query,config))); return map; } public Map<String,Object> selectToList(Map<String,String> query,Map<String,String> config){ Map<String,Object> map = new HashMap<>(); List<Map<String,Object>> resultList = baseMapper.selectBaseList(selectGroupCount(query, config)); List list = new ArrayList(); for (Map<String,Object> resultMap:resultList) { List subList = new ArrayList(); for(String key:resultMap.keySet()){//keySet获取map集合key的集合 然后在遍历key即可 subList.add(resultMap.get(key)); } list.add(subList); } map.put("list",list); return map; } public Integer selectSqlToInteger(String sql){ Integer value = baseMapper.selectBaseCount(sql); return value; } public Map<String,Object> selectBarGroup(Map<String,String> query,Map<String,String> config){ Map<String,Object> map = new HashMap<>(); List<Map<String,Object>> resultList = baseMapper.selectBaseList(barGroup(query, config)); List list = new ArrayList(); for (Map<String,Object> resultMap:resultList) { List subList = new ArrayList(); for(String key:resultMap.keySet()){//keySet获取map集合key的集合 然后在遍历key即可 subList.add(resultMap.get(key)); } list.add(subList); } map.put("list",list); return map; } // public void barGroup(Map<String,String> query,Map<String,String> config,QueryWrapper wrapper){ // if (config.get(FindConfig.GROUP_BY) != null && !"".equals(config.get(FindConfig.GROUP_BY))){ // wrapper.select(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++) // wrapper.select("SUM("+fieldList[i]+")"); // } // toWhereSql(query, "0".equals(config.get(FindConfig.LIKE)),wrapper); // wrapper.groupBy(config.get(FindConfig.GROUP_BY)); // }else { // wrapper.select("SUM("+config.get(FindConfig.GROUP_BY)+")"); // toWhereSql(query, "0".equals(config.get(FindConfig.LIKE)),wrapper); // } // log.info("[{}] - 查询操作，sql: {}",wrapper.getSqlSelect()); // } public String 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 sql.toString(); } // public void selectGroupCount(Map<String,String> query,Map<String,String> config,QueryWrapper wrapper){ // wrapper.select("count(*) AS count_value",config.get(FindConfig.GROUP_BY)); // toWhereSql(query, "0".equals(config.get(FindConfig.LIKE)),wrapper); // if (config.get(FindConfig.GROUP_BY) != null && !"".equals(config.get(FindConfig.GROUP_BY))){ // wrapper.groupBy(config.get(FindConfig.GROUP_BY)); // } // log.info("[{}] - 查询操作，sql: {}",wrapper.getSqlSelect()); // } public String 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 sql.toString(); } // public void select(Map<String,String> query,Map<String,String> config,QueryWrapper wrapper){ // wr