我有两个表有一对一的关系,如下所示:
@Entity
@Data
@NoArgsConstructor
@AllArgsConstructor
public class Book {
@Id
@GeneratedValue(strategy = GenerationType.TABLE)
private int id;
private String name;
@OneToOne(cascade = CascadeType.ALL)
@JoinColumn(name = "book_dtail_id")
private BookDetail bookDetail;
}
@Entity
@Table(name = "book_detail")
@Data
@NoArgsConstructor
@AllArgsConstructor
public class BookDetail {
@Id
@GeneratedValue(strategy = GenerationType.TABLE)
private Integer id;
@Column(name = "number_of_pages")
private Integer numberOfPages;
@OneToOne(mappedBy = "bookDetail")
private Book book;
}
Run Code Online (Sandbox Code Playgroud)
我使用表单输入数据如下
@Data
@NoArgsConstructor
@AllArgsConstructor
public class BookForm {
Book book;
BookDetail bookDetail;
}
Run Code Online (Sandbox Code Playgroud)
控制器看起来像这样:
String handleNewBook(Model model){
Book book = …Run Code Online (Sandbox Code Playgroud) 我从iPhone/iPad库加载照片,其中大部分都是在纵向模式下,我想知道如何在横向或纵向模式下查看照片?
我尝试使用如下代码:
@RequestMapping(value = "/{id}", method = RequestMethod.GET)
public Brand getBrand(@PathVariable Integer id) {
return brandService.getOne(id);
}
@RequestMapping(value = "/{name}", method = RequestMethod.GET)
public List<Brand> getBrand(@PathVariable String name) {
return brandService.getSome(name);
}
Run Code Online (Sandbox Code Playgroud)
但我得到这样的错误,我该怎么办?
java.lang.IllegalStateException: Ambiguous handler methods mapped for HTTP path 'http://localhost:8080/api/brand/1': {public java.util.List com.zangland.controller.BrandController.getBrand(java.lang.String), public com.zangland.entity.Brand com.zangland.controller.BrandController.getBrand(java.lang.Integer)}
at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.lookupHandlerMethod(AbstractHandlerMethodMapping.java:375) ~[spring-webmvc-4.2.4.RELEASE.jar:4.2.4.RELEASE]
Run Code Online (Sandbox Code Playgroud) 我有imageNames喜欢wange/25011.jpg|wange/25011-1.jpg或null,我想将它们拆分为wange/25011.jpg和wange/25011-1.jpg,或者如果为null则不拆分.我尝试了如下代码,但没有工作......
<td th:if="${brickset.imageNames} != null" th:each="image : ${#strings.arraySplit(brickset.imageNames, '|')}">
<a href="#" th:href="${imageBaseUrl + image}">
<img src="#" th:src="${imageBaseUrl + image}" height="64"/>
</a>
</td>
Run Code Online (Sandbox Code Playgroud) 虽然我知道有人问过这个问题,但我找不到合适的答案,所以我又问了一遍.我使用PhantomJS来抓取网站,但在Mac上速度非常慢,所以我想要Chrome浏览器,但Chrome浏览器显示浏览器很糟糕,我可以将其隐藏吗?我尝试了如下代码,仍然显示一个小浏览器窗口..
browser = webdriver.Chrome()
browser.set_window_position(0, 0)
browser.set_window_size(0, 0)
Run Code Online (Sandbox Code Playgroud) 我尝试在VBA中获取工作表格式,我发现HorizontalAlignment的默认值等于1,但是MSND中没有此值,这里是可能的值,有人可以帮助我吗?
xlCenter = -4108
xlDistributed = -4117
xlJustify = -4130
xlLeft = -4131
xlRight = -4152
Run Code Online (Sandbox Code Playgroud) 我试图单击这样的链接:
<div class="loading" style="display:none;">
<p class="btn blue"><span>?????</span></p>
<a href="javascript:void(0);" onclick="get_more();"></a>
</div>
Run Code Online (Sandbox Code Playgroud)
我使用了这段代码:
element = WebDriverWait(driver, 30).until(lambda x: x.find_element_by_css_selector(".btn.blue")) # @UnusedVariable
element.click()
Run Code Online (Sandbox Code Playgroud)
我收到这样的错误,该怎么解决?
selenium.common.exceptions.WebDriverException: Message: unknown error: Element <p class="btn blue">...</p> is not clickable at point (391, 577). Other element would receive the click: <a href="javascript:void(0);" onclick="get_more();"></a>
(Session info: headless chrome=69.0.3497.100)
(Driver info: chromedriver=2.41.578737 (49da6702b16031c40d63e5618de03a32ff6c197e),platform=Windows NT 6.1.7601 SP1 x86_64)
Run Code Online (Sandbox Code Playgroud) selenium webdriver python-3.x selenium-webdriver webdriverwait
我在 application.properties 中有带有属性的 REST API,如下所示:
spring.jackson.property-naming-strategy: CAMEL_CASE_TO_LOWER_CASE_WITH_UNDERSCORES
Run Code Online (Sandbox Code Playgroud)
一切都好!但是当我使用 RestTemplate 进行如下操作时,我发现 Snake Case 中的所有键都为空(例如 nameEnglish),但常规键名可以(例如 rank),我该如何解决这个问题?
@Data
@NoArgsConstructor
@AllArgsConstructor
@EqualsAndHashCode(exclude = {"id"})
@Entity
public class Brand implements Serializable {
private static final long serialVersionUID = 9165709510160554127L;
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@Version
private Integer version;
private String nameChinese;
private String nameEnglish;
private String rank;
}
Run Code Online (Sandbox Code Playgroud)
我保存了如下数据:
Saved Brand: Brand(id=1, version=1, nameChinese=??, nameEnglish=Lego, rank=Top)
Run Code Online (Sandbox Code Playgroud)
但是当我尝试如下代码时:
Brand brands = restTemplate.getForObject("http://localhost:8080/api/brand/lego", Brand.class);
System.out.println(brands);
Run Code Online (Sandbox Code Playgroud)
结果如下,您将看到所有 Camel Case 属性都为 null,尽管我为它们设置了值:
Saved Brand: Brand(id=1, version=1, …Run Code Online (Sandbox Code Playgroud) 当我运行此代码时,收到警告DeprecationWarning: Menu.Append() is deprecated fileMenu.Append(wx.ID_ANY, 'I&mport', imp),我该如何避免?
menubar = wx.MenuBar()
fileMenu = wx.Menu()
fileMenu.Append(wx.ID_NEW, '&New')
fileMenu.Append(wx.ID_OPEN, '&Open')
fileMenu.Append(wx.ID_SAVE, '&Save')
fileMenu.AppendSeparator()
imp = wx.Menu()
imp.Append(wx.ID_ANY, 'Import newsfeed list...')
imp.Append(wx.ID_ANY, 'Import bookmarks...')
imp.Append(wx.ID_ANY, 'Import mail...')
fileMenu.Append(wx.ID_ANY, 'I&mport', imp)
Run Code Online (Sandbox Code Playgroud) 这看起来是一个简单的问题,但我谷歌后找不到任何结果。\n我有 string tel\xef\xbc\x9a090-1234-9876 03-9876-4321\xe3\x80\x80+81-90-1987-3254,我想将它拆分为tel\xef\xbc\x9a, 090-1234-9876,03-9876-4321和+81-90-1987-3254,我该怎么办?