@Test
public void testUpdate() {
Product product = productService.findById(16);
product.setProductname("平凡的世界-贾平凹");
product.setDescption("平凡的世界-贾平凹");
productService.update(product);
}
@Test
public void testDelete() {
Product product = productService.findById(29);
productService.delete(product);
}