springboot+maven+thymeleaf配置实战demo
本案例使用thymeleaf，与springboot配置使用。thymeleaf是一种模板语言，可以动态或者静态显示文本内容。
1 、项目结构
2、构建springboot项目
通过idea的new project构建springboot项目，如果mvn比较慢，建议更改maven目录下的conf中的setting.xml，找到mirrors,在里面加入这段话
<id>nexus-aliyun</id> <mirrorOf>*</mirrorOf> <name>Nexus aliyun</name> <url>http://maven.aliyun.com/nexus/content/groups/public</url>
3、添加thymeleaf配置
pom.xml中插入
、
在application.properties中添加
#thymelea模板配置
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.suffix=.html
spring.thymeleaf.mode=HTML5
spring.thymeleaf.encoding=UTF-8
#热部署文件，页面不产生缓存，及时更新
spring.thymeleaf.cache=false
spring.resources.chain.strategy.content.enabled=true
spring.resources.chain.strategy.content.paths=/**
4、先运行项目，防止出现问题，启动项目。
先建个类测试
启动项目后，在浏览器中输入http://127.0.0.1:8080/hello，出现 wanshanghao
5 现在开始写mvc
package com.example.demo.controller; /** * Created by Administrator on 2018/4/24 0024. */ import com.example.demo.domain.User; import com.example.demo.repository.UserRepository; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import org.springframework.web.servlet.ModelAndView; import java.util.List; /** * 用户控制器. * */ @RestController @RequestMapping("/users") public class UserController { @Autowired private UserRepository userRepository; /** * 从 用户存储库 获取用户列表 * @return */ private List<User> getUserlist() { return userRepository.listUser(); } /** * 查询所用用户 * @return */ @GetMapping public ModelAndView list(Model model) { model.addAttribute("userList", getUserlist()); model.addAttribute("title", "用户管理"); return new ModelAndView("users/list", "userModel", model); } /** * 根据id查询用户 * @return */ @GetMapping("{id}") public ModelAndView view(@PathVariable("id") Long id, Model model) { User user = userRepository.getUserById(id); model.addAttribute("user", user); model.addAttribute("title", "查看用户"); return new ModelAndView("users/view", "userModel", model); } /** * 获取 form 表单页面 * @return */ @GetMapping("/form") public ModelAndView createForm(Model model) { model.addAttribute("user", new User()); model.addAttribute("title", "创建用户"); return new ModelAndView("users/form", "userModel", model); } /** * 新建用户 * @param user * @return */ @PostMapping public ModelAndView create(User user) { user = userRepository.saveOrUpateUser(user); return new ModelAndView("redirect:/users"); } /** * 删除用户 * @param id * @return */ @GetMapping(value = "delete/{id}") public ModelAndView delete(@PathVariable("id") Long id, Model model) { userRepository.deleteUser(id); model.addAttribute("userList", getUserlist()); model.addAttribute("title", "删除用户"); return new ModelAndView("users/list", "userModel", model); } /** * 修改用户 */ @GetMapping(value = "modify/{id}") public ModelAndView modifyForm(@PathVariable("id") Long id, Model model) { User user = userRepository.getUserById(id); model.addAttribute("user", user); model.addAttribute("title", "修改用户"); return new ModelAndView("users/form", "userModel", model); } }
package com.example.demo.domain; /** * Created by nicknailo on 2018/4/24 0024. */ import javax.xml.bind.annotation.XmlRootElement; /** * User. */ @XmlRootElement // mediatype 转为xml public class User { private long id; // 用户的唯一标识 private String name; private int age; public User() { } public User(String name, int age) { this.name = name; this.age = age; } public long getId() { return id; } public void setId(long id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } }
package com.example.demo.repository; /** * Created by nicknailo on 2018/4/24 0024. */ import com.example.demo.domain.User; import java.util.List; /** * 用户仓库. */ public interface UserRepository { /** * 新增或者修改用户 * @param user * @return */ User saveOrUpateUser(User user); /** * 删除用户 * @param id */ void deleteUser(Long id); /** * 根据用户id获取用户 * @param id * @return */ User getUserById(Long id); /** * 获取所有用户的列表 * @return */ List<User> listUser(); }
package com.example.demo.repository; import java.util.ArrayList; import java.util.List; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import java.util.concurrent.atomic.AtomicLong; import com.example.demo.domain.User; import org.springframework.stereotype.Repository; /** * 用户资源库. */ @Repository public class UserRepositoryImpl implements UserRepository { private static AtomicLong counter = new AtomicLong(); private final ConcurrentMap<Long, User> userMap = new ConcurrentHashMap<Long, User>(); public UserRepositoryImpl(){ User user = new User(); user.setAge(30); user.setName("大西瓜"); this.saveOrUpateUser(user); } /* (non-Javadoc) * @see com.waylau.spring.boot.thymeleaf.repository.UserRepository#saveUser(com.waylau.spring.boot.thymeleaf.vo.UserVO) */ @Override public User saveOrUpateUser(User user) { Long id = user.getId(); if (id <= 0) { id = counter.incrementAndGet(); user.setId(id); } this.userMap.put(id, user); return user; } /* (non-Javadoc) * @see com.waylau.spring.boot.thymeleaf.repository.UserRepository#deleteUser(java.lang.Long) */ @Override public void deleteUser(Long id) { this.userMap.remove(id); } /* (non-Javadoc) * @see com.waylau.spring.boot.thymeleaf.repository.UserRepository#getUserById(java.lang.Long) */ @Override public User getUserById(Long id) { return this.userMap.get(id); } /* (non-Javadoc) * @see com.waylau.spring.boot.thymeleaf.repository.UserRepository#listUser() */ @Override public List<User> listUser() { return new ArrayList<User>(this.userMap.values()); } }
footer.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>action is everything</title> </head> <body> <div data-th-fragment="header"> <h1> Thyleaf in action </h1> <a href = "/users">首页</a> </div> </body> </html>
header.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>action is everything</title> </head> <body> <div data-th-fragment="header"> <h1> Thyleaf in action </h1> <a href = "/users">首页</a> </div> </body> </html>
form.html
<!DOCTYPE html> <html xmlns:th="http://www.thymeleaf.org" > <head> <meta charset="UTF-8"> <title>welcome</title> </head> <body> <div th:replace="fragments/header :: header">...</div> <h3 th:text="${userModel.title}">Welcome to springboot</h3> <form action="/users" th:action="@{/users}" method="post" th:object="${userModel.user}" > <input type="hidden" name="id" th:value="${userModel.user.id}"> 名称：<br> <input type="text" name="name" th:value="*{name}"> <br> 年龄：<br> <input type="text" name="age" th:value="*{age}"> <input type="submit" value="提交"> </form> <div th:replace="~{fragments/footer :: footer}">...</div> </body> </html>
list.html
<!DOCTYPE html> <html xmlns:th="http://www.thymeleaf.org" > <!--<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" >--> <!--<html xmlns:th="http://www.thymeleaf.org"--> <!--xmlns:layout="http://www.ultraq.net.nz/thymeleaf/layout">--> <head> <meta charset="UTF-8"> <title>今晚天气好</title> </head> <body> <div th:replace="fragments/header :: header">...</div> <h3 th:text="${userModel.title}">Welcome to springboot</h3> <div> <!--<a href="/users/form.html" th:href="@{/users/form}">创建用户</a>--> <a th:href="@{/users/form}" >创建用户</a> </div> <table border="1"> <thead> <tr> <td>ID</td> <td>Age</td> <td>Name</td> </tr> </thead> <tbody> <tr th:if="${userModel.userList.size()} eq 0"> <td colspan="3">没有用户信息！！</td> </tr> <tr th:each="user : ${userModel.userList}"> <td th:text="${user.id}">1</td> <td th:text="${user.age}">11</td> <td> <a href="view.html" th:href="@{'/users/' + ${user.id}}" th:text="${user.name}">wss</a></td> </tr> </tbody> </table> <div th:replace="~{fragments/footer :: footer}">...</div> </body> </html>
view.html
<!DOCTYPE html> <html xmlns:th="http://www.thymeleaf.org" > <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <div th:replace="fragments/header :: header">...</div> <h3 th:text="${userModel.title}">Welcome to springboot</h3> <div> <p><strong>ID:</strong><span id="id" th:text="${userModel.user.id}"></span></p> <p><strong>Age:</strong><span id="id" th:text="${userModel.user.age}"></span></p> <p><strong>Name:</strong><span id="id" th:text="${userModel.user.name}"></span></p> </div> <div> <a th:href="@{'/users/delete/' + ${userModel.user.id} }">删除</a> <a th:href="@{'/users/modify/' + ${userModel.user.id} }">修改</a> </div> <div th:replace="~{fragments/footer :: footer}">...</div> </body> </html>
代码运行效果，
