thymeleaf

第 2-6 课:使用 Spring Boot 和 Thymeleaf 演示上传文件

家住魔仙堡 提交于 2020-09-28 04:00:44
在互联网行业中上传文件是一个高频的使用场景,常用的案例有上传头像、上传身份证信息等。Spring Boot 利用 MultipartFile 的特性来接收和处理上传的文件,MultipartFile 是 Spring 的一个封装的接口,封装了文件上传的相关操作,利用 MultipartFile 可以方便地接收前端文件,将接收到的文件存储到本机或者其他中间件中。 首先通过一个小的示例来了解 Spring Boot 对上传文件的支持,项目前端页面使用 Thymeleaf 来处理。 快速上手 添加依赖包 <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency> 引入了 spring-boot-starter-thymeleaf 做页面模板引擎。 配置信息 常用配置内容,单位支持 MB 或者 KB: #支持的最大文件 spring.servlet

Only variable expressions returning numbers or booleans are allowed in this context

∥☆過路亽.° 提交于 2020-08-24 05:09:11
问题 I am trying to pass a value to my javascript function but that function call depends on a boolean variable. I had this working fine until I recently upgraded to thymeleaf security 5. This is the code snippet. <body th:onload="${timerEnabled} ? 'javascript:runTimer(\'' + ${timeRemaining} + '\');'"> timerEnabled has to be true for the function call to be done but thymeleaf now throws an exception as org.thymeleaf.exceptions.TemplateProcessingException: Only variable expressions returning

Only variable expressions returning numbers or booleans are allowed in this context

巧了我就是萌 提交于 2020-08-24 05:08:32
问题 I am trying to pass a value to my javascript function but that function call depends on a boolean variable. I had this working fine until I recently upgraded to thymeleaf security 5. This is the code snippet. <body th:onload="${timerEnabled} ? 'javascript:runTimer(\'' + ${timeRemaining} + '\');'"> timerEnabled has to be true for the function call to be done but thymeleaf now throws an exception as org.thymeleaf.exceptions.TemplateProcessingException: Only variable expressions returning

How can I display the current logged in User with Spring Boot Thymeleaf?

风格不统一 提交于 2020-08-19 12:18:40
问题 I am trying to display the details of the current user however I keep getting errors. I tried accessing the authenticated user from the template but that did not work as I was getting this error: Method getFirstName() cannot be found on org.springframework.security.core.userdetails.User type I was trying to get the information from a controller and then saving it in a string and passsing the string to a template but that wasn't working either. Here is my SecurityConfig class: @Configuration

How can I display the current logged in User with Spring Boot Thymeleaf?

与世无争的帅哥 提交于 2020-08-19 12:16:45
问题 I am trying to display the details of the current user however I keep getting errors. I tried accessing the authenticated user from the template but that did not work as I was getting this error: Method getFirstName() cannot be found on org.springframework.security.core.userdetails.User type I was trying to get the information from a controller and then saving it in a string and passsing the string to a template but that wasn't working either. Here is my SecurityConfig class: @Configuration

Spring Boot Web 开发@Controller @RestController 使用教程

谁说我不能喝 提交于 2020-08-17 17:20:28
在 Spring Boot 中,@Controller 注解是专门用于处理 Http 请求处理的,是以 MVC 为核心的设计思想的控制层。@RestController 则是 @Controller 的衍生注解。 本项目源码下载 1 Spring Boot Controller 1.1 原理 Spring Boot 本身就 Spring MVC 的简化版本。是在 Spring MVC 的基础上实现了自动配置,简化了开发人员开发过程。 Spring MVC 是通过一个叫 DispatcherServlet 前端控制器的来拦截请求的。而在 Spring Boot 中 使用自动配置把 DispatcherServlet 前端控制器自动配置到框架中。 例如,我们来解析 /users 这个请求 DispatcherServlet 前端控制器拦截请求 /users servlet 决定使用哪个 handler 处理 Spring 检测哪个控制器匹配 /users ,Spring 从 @RquestMapping 中查找出需要的信息 Spring 找到正确的 Controller 方法后,开始执行 Controller 方法 返回 users 对象列表 根据与客户端交互需要返回 Json 或者 Xml 格式 1.2 相关注解 在 Spring Boot 中使用到 @Controller

从源码看Spring Security之采坑笔记(Spring Boot篇)

旧巷老猫 提交于 2020-08-17 08:47:44
【本文版权归微信公众号"代码艺术"(ID:onblog)所有,若是转载请务必保留本段原创声明,违者必究。若是文章有不足之处,欢迎关注微信公众号私信与我进行交流!】 一:唠嗑 鼓捣了两天的Spring Security,踩了不少坑。如果你在学Spring Security,恰好又是使用的Spring Boot,那么给我点个赞吧!这篇博客将会让你了解Spring Security的各种坑! 阅读前说一下,这篇博客是我一字一字打出来的,转载务必注明出处哦! 另外,本文已授权微信公众号“后端技术精选”独家发布 二:开始 1.准备 Spring boot 1.5 Mysql 5.7 导入依赖 <!-- Web工程 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- 数据库相关 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>mysql<