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spring boot空属性赋值问题+aspect日志

2020-08-03 20:56 856 查看

空属性赋值问题
MyBeanUtils类

public class MyBeanUtils {

public static String[] getNullPropertyNames(Object source){
BeanWrapper beanWrapper=new BeanWrapperImpl(source);
PropertyDescriptor[] pds=beanWrapper.getPropertyDescriptors();
List<String> nullPropertyNames=new ArrayList<>();
for (PropertyDescriptor pd:pds){
String propertyName=pd.getName();
if(beanWrapper.getPropertyValue(propertyName)==null){
nullPropertyNames.add(propertyName);
}
}
return nullPropertyNames.toArray(new String[nullPropertyNames.size()]);
}
}

在NewServiceImpl中对updateNew方法进行修改

@Override
public News updateNew(Long id, News news) {
News news1=newRepository.findById(id).orElse(null);
if(news1==null){
//     System.out.println("未获得更新对象");
throw new NotFoundException("该新闻不存在");
}
//更新后传入的news复制给news1,查找更新数据news中空值属性,忽略不复制给news1
BeanUtils.copyProperties(news,news1, MyBeanUtils.getNullPropertyNames(news));
news1.setUpdateTime(new Date());
return newRepository.save(news1);
}

日志打印
新建一个LogAspect类

@Aspect
@Component
public class LogAspect {

private final Logger logger= LoggerFactory.getLogger(this.getClass());

@Pointcut("execution(* com.zr0726.news.web.*.*(..))")
public void log(){}

@Before("log()")
public void doBefore(JoinPoint joinPoint){
//获得request
ServletRequestAttributes attributes=(ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
HttpServletRequest request=attributes.getRequest();
//获得url和ip
String url=request.getRequestURL().toString();
String ip=request.getRemoteAddr();
String classMethod=joinPoint.getSignature().getDeclaringTypeName()+"."+joinPoint.getSignature().getName();
Object[] args=joinPoint.getArgs();
Requestlog requestlog=new Requestlog(url,ip,classMethod,args);
logger.info("_____________________doBefore_______________________");
}

@After("log()")
public void doAfter(){
logger.info("_____________________doAfter_______________________");
}

@AfterReturning(returning = "result",pointcut = "log()")
public void adAfterReturn(Object result){
logger.info("Result: {}",result);
}

private class Requestlog{
private String url;
private String ip;
private String classMethod;
private Object[] args;

public Requestlog(String url, String ip, String className, Object[] args) {
this.url = url;
this.ip = ip;
this.classMethod = className;
this.args = args;
}

@Override
public String toString() {
return "Requestlog{" +
"url='" + url + '\'' +
", ip='" + ip + '\'' +
", classMethod='" + classMethod + '\'' +
", args=" + Arrays.toString(args) +
'}';
}
}
}

效果展示

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