Question

为简单起见，假设我们有一个模板html文件（ test.htm ），如下所示：

arr2D = [[1 -1 -1]
         [-1 1 -1]
         [-1 -1 1]]

以下控制器用于返回test.htm：

<div th:fragment="test">
    this is a test fragment
</div>
<div th:include=":: test"> <!-- we'll change this line later -->
    this is a placeholder
</div>

在这种情况下，如果访问home索引，我们可以获得以下结果：

@Controller
public class HomeController {
    @RequestMapping(value = "/", method = RequestMethod.GET)
    public ModelAndView get(ModelAndView mav) {
        mav.setViewName("/test.htm");
        mav.addObject("fragmentName", ":: test"); // we'll use this later
        return mav;
    }
}

但是，如果我们使用变量this is a test fragment this is a test fragment来设置th：include值，如下所示：

fragmentName

Thymeleaf抱怨此模板“ :: test”无法解析：

<div th:fragment="test">
    this is a test fragment
</div>
<div th:include="${fragmentName}"> <!-- modified to use a variable value -->
    this is a placeholder
</div>

这里是一个问题：有没有办法使用变量设置There was an unexpected error (type=Internal Server Error, status=500). Error resolving template [:: test], template might not exist or might not be accessible by any of the configured Template Resolvers (template: "/test.htm" - line 5, col 6)值？

Answer 1

您可以使用Thymeleaf表达式预处理：

<div th:include="__${fragmentName}__"> 
    this is a placeholder
</div>

基本上，您指示thymeleaf首先对__ $ {fragmentName} __进行预处理，然后在解析值以在正常处理阶段使用它时，评估th：include就像是一个静态值th：include =“ :: test “

如何使用变量设置包括值？

1 个答案: