public static final Integer CODE_39120 = 39120;
public static final String MESSAGE_39120 = "[包裹]与[库房号]不一致，确定装箱？"; public static final Integer CODE_39121 = 39121;
public static final String MESSAGE_39121 = "[包裹]与[箱号]的承运类型不一致,确定装箱？"; Rule rule1 = request.getRuleMap().get("1050"); 

@RequestMapping(value = "/export")
public void export(CityRelationDomain condition, HttpServletResponse response) { ZipOutputStream zos = null; BufferedWriter bufferedWriter = null; try { condition.setStart(0); condition.setSize(MAX_EXPORT_LINES); List<CityRelationDomain> list = cityRelationService.getOrdersByCondition(condition); response.setCharacterEncoding("GBK"); response.setContentType("multipart/form-data"); response.setHeader("Content-Disposition", "attachment;fileName=export.zip"); zos = new ZipOutputStream(response.getOutputStream()); bufferedWriter = new BufferedWriter(new OutputStreamWriter(zos, "GBK")); bufferedWriter.write("订单类型编码,始发城市-省,始发城市-市,目的城市-省,目的城市-市"); ZipEntry zipEntry = new ZipEntry("export.csv"); zos.putNextEntry(zipEntry); for (CityRelationDomain domain : list) { try { bufferedWriter.newLine(); bufferedWriter.write(CSVExportUtil.trans2CSV(domain.getOrderCode())); bufferedWriter.write(','); bufferedWriter.write(CSVExportUtil.trans2CSV(domain.getProvinceNameFrom())); bufferedWriter.write(','); bufferedWriter.write(CSVExportUtil.trans2CSV(domain.getCityNameFrom())); bufferedWriter.write(','); bufferedWriter.write(CSVExportUtil.trans2CSV(domain.getProvinceNameTo())); bufferedWriter.write(','); bufferedWriter.write(CSVExportUtil.trans2CSV(domain.getCityNameTo())); } catch (Exception e) { e.printStackTrace(); } } bufferedWriter.newLine(); bufferedWriter.flush(); zos.closeEntry(); bufferedWriter.close(); } catch (Exception e) { e.printStackTrace(); logger.error("导出CSV文件异常"); } finally { try { if (zos != null) { zos.close(); } if (bufferedWriter != null) { bufferedWriter.close(); } } catch (IOException e) { e.printStackTrace(); } }
} 

@Service public class AService { private static final SimpleDateFormat FORMAT = new SimpleDateFormat("yyyy-MM-dd"); public void doSomething() { //use FORMAT } }

@Service
public class BService { private Pojo b; public void doB() { b = getB(); process(b); }
} 

@Service
public class FooService { private static final Logger LOGGER = LoggerFactory.getLogger(FooService.class); public void doFooThing(Foo foo) { LOGGER.debug("get parameter foo {}", JSONObject.toString(foo)); try {/*do something*/} catch (Exception ex) {ex.printStackTrace();} }
} 

public interface BarService {    void doBarThing(Bar b); void doBarFatherThing(Bar b);
}
public class BarServiceImpl  implement BarService{ public void doBarThing(Bar b) { if (b.getType() == BarType.A) { //do some logic } else (b.getType() == BarType.B) { //do some B type logic
        } //do other doBarThing logic
    } public void doBarFatherThing(Bar b) { if (b.getType() == BarType.A) { //do some logic } else (b.getType() == BarType.B) { //do some B type logic
        } //do other doBarFatherThing logic
    }
} 

public interface BarService { void doBarThing(Bar b); void doBarFatherThing(Bar b);
}
public class BarServiceFactory { public BarService getBarService(BarType type) { // get bar service logic
    }
}
//如果有公共逻辑就定义， 没有就不定义
public class BaseBarService implement BarService { public void doBarThing(Bar b) { //do other doBarThing logic
    } public void doBarFatherThing(Bar b) { //do other doBarFatherThing logic
    } }
public class TypeABarService extends BaseBarService  implement BarService { public void doBarThing(Bar b) { // doATypeThing super.doBarThing(b); } public void doBarFatherThing(Bar b) { // do bar type A service
super.doBarFatherThing(b); //如果需要就调用， 不需要就不调用父类
    } }