BServiceImpl.java
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package com.bsth.service.schedule.impl;
import com.bsth.entity.search.CustomerSpecs;
import com.bsth.repository.BaseRepository;
import com.bsth.service.schedule.BService;
import com.bsth.service.schedule.exception.ScheduleException;
import com.bsth.service.schedule.utils.DataToolsService;
import jxl.Cell;
import jxl.Sheet;
import jxl.Workbook;
import jxl.write.Label;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.domain.Specification;
import javax.persistence.EntityManager;
import java.io.File;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* 基础BService实现。
*/
public class BServiceImpl<T, ID extends Serializable> implements BService<T, ID> {
@Autowired
private BaseRepository<T, ID> baseRepository;
@Autowired
private EntityManager entityManager;
@Value("${hibernate.jdbc.batch_size}")
private int batchSize;
@Autowired
@Qualifier(value = "dataToolsServiceImpl")
private DataToolsService dataToolsService;
/** 日志记录器 */
protected Logger logger = LoggerFactory.getLogger(this.getClass());
// CRUD 操作
// Create，Update操作
@Override
public T save(T t) {
if (logger.isDebugEnabled()) {
logger.debug("save...");
}
return baseRepository.save(t);
}
@Override
public <S extends T> List<S> bulkSave(List<S> entities) {
if (logger.isDebugEnabled()) {
logger.debug("bulkSave...");
}
// 不使用内部批量保存，自己实现批量保存
final List<S> savedEntities = new ArrayList<>(entities.size());
int i = 0;
for (S t : entities) {
entityManager.persist(t);
savedEntities.add(t);
i++;
if (i % batchSize == 0) {
entityManager.flush();
entityManager.clear();
}
}
return savedEntities;
}
// Research操作
@Override
public T findById(ID id) {
if (logger.isDebugEnabled()) {
logger.debug("findById...");
}
return baseRepository.findOne(id);
}
@Override
public List<T> findAll() {
if (logger.isDebugEnabled()) {
logger.debug("findAll...");
}
return (List<T>) baseRepository.findAll();
}
@Override
public Page<T> list(Map<String, Object> param, Pageable pageable) {
if (logger.isDebugEnabled()) {
logger.debug("list(...,pageable)...");
}
// 自定义查询参数
Specification<T> specification = new CustomerSpecs<>(param);
return baseRepository.findAll(specification, pageable);
}
@Override
public List<T> list(Map<String, Object> param) {
if (logger.isDebugEnabled()) {
logger.debug("list...");
}
// 自定义查询参数
Specification<T> specification = new CustomerSpecs<>(param);
return baseRepository.findAll(specification);
}
// Delete操作
@Override
public void delete(ID id) throws ScheduleException {
if (logger.isDebugEnabled()) {
logger.debug("delete...");
}
baseRepository.delete(id);
}
@Override
public File uploadFile(String filename, byte[] filedata) throws ScheduleException {
try {
// 对上传的excel文件做处理，将第一个sheet名字设定为工作表1
File file = dataToolsService.uploadFile(filename, filedata);
Workbook workbook = Workbook.getWorkbook(file);
Sheet sheet = workbook.getSheet(0);
File fileCal = new File(file.getAbsolutePath() + "_sheetChange.xls");
WritableWorkbook writableWorkbook = Workbook.createWorkbook(fileCal);
WritableSheet writableSheet = writableWorkbook.createSheet("工作表1", 0);
for (int i = 0; i < sheet.getRows(); i++) {
Cell[] cells = sheet.getRow(i);
for (int j = 0; j < cells.length; j++) {
writableSheet.addCell(new Label(j, i, cells[j].getContents()));
}
}
writableWorkbook.write();
writableWorkbook.close();
return fileCal;
} catch (Exception exp) {
throw new ScheduleException(exp);
}
}
@Override
public void importData(File file, Map<String, Object> params) throws ScheduleException {
dataToolsService.importData(file, params);
}
@Override
public File exportData(Map<String, Object> params) throws ScheduleException {
return dataToolsService.exportData(params);
}
}