list
A a=aService.select();//获取list实体类结果
A z=a;
Class<?> clazz=z.getClass();
Field [] fields=clazz.getDeclaredFields();
for(int i=0;i<fields.length;i++){
try {
PropertyDescriptor pd=new PropertyDescriptor(fields[i].getName(),clazz);
Method getMethod=pd.getReadMethod();
Method setMethod=pd.getWriteMethod();
try {
Object v=getMethod.invoke( z);
if(v==null){
setMethod.invoke(z, "-");
}
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
} catch (IntrospectionException e) {
e.printStackTrace();
}
}
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