Welcome to Spring Boot
src/main/java 下
controller层,路由功能
dao层,数据库的访问
domain,bean的存放
service,业务层
application.java,spring boot的主启动程序
src/main/resources/application.properties ,spring boot的配置文件
pom.xml
1 <?xml version="1.0" encoding="UTF-8"?>
2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
3 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
4 <modelVersion>4.0.0</modelVersion>
5
6 <groupId>com.jwen</groupId>
7 <artifactId>login</artifactId>
8 <version>0.0.1-SNAPSHOT</version>
9 <packaging>jar</packaging>
10
11 <name>login</name>
12 <description>Demo project for Spring Boot</description>
13
14 <parent>
15 <groupId>org.springframework.boot</groupId>
16 <artifactId>spring-boot-starter-parent</artifactId>
17 <version>1.5.4.RELEASE</version>
18 <relativePath /> <!-- lookup parent from repository -->
19 </parent>
20
21 <properties>
22 <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
23 <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
24 <java.version>1.8</java.version>
25 </properties>
26
27 <dependencies>
28 <dependency>
29 <groupId>org.springframework.boot</groupId>
30 <artifactId>spring-boot-starter</artifactId>
31 </dependency>
32
33 <dependency>
34 <groupId>org.springframework.boot</groupId>
35 <artifactId>spring-boot-starter-web</artifactId>
36 </dependency>
37 <dependency>
38 <groupId>org.springframework.boot</groupId>
39 <artifactId>spring-boot-starter-thymeleaf</artifactId>
40 </dependency>
41 <dependency>
42 <groupId>org.springframework.boot</groupId>
43 <artifactId>spring-boot-starter-test</artifactId>
44 <scope>test</scope>
45 </dependency>
46 <dependency>
47 <groupId>org.springframework.boot</groupId>
48 <artifactId>spring-boot-devtools</artifactId>
49 </dependency>
50 <dependency>
51 <groupId>org.springframework.boot</groupId>
52 <artifactId>spring-boot-starter-data-jpa</artifactId>
53 </dependency>
54 <dependency>
55 <groupId>mysql</groupId>
56 <artifactId>mysql-connector-java</artifactId>
57 </dependency>
58 </dependencies>
59
60 <build>
61 <plugins>
62 <plugin>
63 <groupId>org.springframework.boot</groupId>
64 <artifactId>spring-boot-maven-plugin</artifactId>
65 <dependencies>
66 <dependency>
67 <groupId>org.springframework</groupId>
68 <artifactId>springloaded</artifactId>
69 </dependency>
70 </dependencies>
71 </plugin>
72 </plugins>
73 </build>
74
75
76 </project>
简易说明:
thymeleaf -- 用来渲染模板,spring boot 不建议使用JSP
devtools -- 用来热部署,可以只关注coding,保存后自行restart
jpa -- 数据库访问,很好很强大
LoginApplication.java
package com.jwen.login;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class LoginApplication {
public static void main(String[] args) {
SpringApplication.run(LoginApplication.class, args);
}
}
UserController.java
package com.jwen.login.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import com.jwen.login.domain.User;
import com.jwen.login.service.UserService;
@Controller
@EnableAutoConfiguration
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/")
@ResponseBody
String welcome() {
return "welcome my first spring boot project";
}
@RequestMapping("/notVerify")
@ResponseBody
String notVerify() {
return "username or password NOT correct";
}
@RequestMapping("/login")
String login(Model model) {
model.addAttribute("user", new User());
return "login";
}
@RequestMapping("/register")
String register(Model model) {
model.addAttribute("user", new User());
return "register";
}
@RequestMapping(value = "/registerUser", method = RequestMethod.POST)
@ResponseBody
String registerUser(User user, Model model) {
return userService.registerUser(user);
}
@RequestMapping(value = "/userLogin", method = RequestMethod.POST)
String userLogin(User user, Model model) {
boolean verify = userService.verifyUser(user);
if (verify) {
model.addAttribute("name", user.getName());
model.addAttribute("password", user.getPassword());
return "result";
} else {
return "redirect:/notVerify";
}
}
}
@RequestMapping("/login") ensures that HTTP requests to /login are mapped to the login() method
,这个注解可以使指定的uri指向到该方法
@ResponseBody
返回response,一般return为string的话,页面就直接返回该string配置application.properties,指向html文件:
spring.thymeleaf.prefix=classpath:/templates/
spring.thymeleaf.cache=false
spring.thymeleaf.mode=HTML5
spring.thymeleaf.encoding=UTF-8
spring.thymeleaf.content-type=text/html
会去识别resources/templates下的html文件,根据return回来的string来匹配
@RequestMapping("/login")
String login(Model model) {
model.addAttribute("user", new User());
return "login";
}
这里没有@ResponseBody ,因此会去匹配到login.html