前言

• thymeleaf 3.0

获取绝对路径

使用Thymeleaf模板引擎想要拼出绝对路径

<a th:href="${#request.getScheme() + '://' + #request.getServerName() + ':' + #request.getServerPort() + @{/login}} ">点我啊！</a>

等效的写法：

<a th:href="${#httpServletRequest.getScheme() + '://' + #httpServletRequest.getServerName() + ':' + #httpServletRequest.getServerPort() + @{/login}} ">点我啊！</a>

解释下：

Inside a web environment there is also direct access to the following objects (note these are objects, not maps/namespaces):
#request : direct access to the javax.servlet.http.HttpServletRequest object associated with the current request.

按照官方文档的说法，内置变量 #request 等同于 javax.servlet.http.HttpServletRequest。
因此，可以按照 javax.servlet.http.HttpServletRequest 拼接URL的方式，拼接绝对路径。

javax.servlet.http.HttpServletRequest 的方法说明

• getScheme() 获取协议
• getServerName() 获取服务器名
• getServerPort() 服务器端口
• getContextPath() APP根路径

勘误

之前给出的写法有些问题，已修正。

下面是之前给出的错误的写法：

<a th:href="${#httpServletRequest.getScheme() + '://' + #httpServletRequest.getServerName() + ':' + #request.getServerPort()  + #request.getContextPath() + @{/login}} ">点我啊！</a>

参考

https://www.thymeleaf.org/doc/tutorials/3.0/usingthymeleaf.html#appendix-a-expression-basic-objects