Spring Boot起步以及集成themaleaf

布满荆棘的人生 2022-05-11 12:33 172阅读 0赞

1、创建项目

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2、选择Maven项目

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Maven配置文件

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打开项目

查看项目结构

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添加依赖pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
      <modelVersion>4.0.0</modelVersion>
    
      <groupId>com.imooc</groupId>
      <artifactId>miaosha_1</artifactId>
      <version>0.0.1-SNAPSHOT</version>
      <packaging>jar</packaging>
    
      <name>miaosha_1</name>
      <url>http://maven.apache.org</url>
    
      
      <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
    </parent>
    
    
      <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      </properties>
    
      <dependencies>
        
    	<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>
    
      </dependencies>
    </project>

错误通用编码

public class CodeMsg {
    	
    	private int code;
    	private String msg;
    	
    	//通用的错误码
    	public static CodeMsg SUCCESS = new CodeMsg(0, "success");
    	public static CodeMsg SERVER_ERROR = new CodeMsg(500100, "服务端异常");
    	public static CodeMsg BIND_ERROR = new CodeMsg(500101, "参数校验异常：%s");
    	//登录模块 5002XX
    	public static CodeMsg SESSION_ERROR = new CodeMsg(500210, "Session不存在或者已经失效");
    	public static CodeMsg PASSWORD_EMPTY = new CodeMsg(500211, "登录密码不能为空");
    	public static CodeMsg MOBILE_EMPTY = new CodeMsg(500212, "手机号不能为空");
    	public static CodeMsg MOBILE_ERROR = new CodeMsg(500213, "手机号格式错误");
    	public static CodeMsg MOBILE_NOT_EXIST = new CodeMsg(500214, "手机号不存在");
    	public static CodeMsg PASSWORD_ERROR = new CodeMsg(500215, "密码错误");
    	
    	//商品模块 5003XX
    	
    	//订单模块 5004XX
    	
    	//秒杀模块 5005XX
    	
    	private CodeMsg( ) {
    	}
    			
    	private CodeMsg( int code,String msg ) {
    		this.code = code;
    		this.msg = msg;
    	}
    	
    	public int getCode() {
    		return code;
    	}
    	public void setCode(int code) {
    		this.code = code;
    	}
    	public String getMsg() {
    		return msg;
    	}
    	public void setMsg(String msg) {
    		this.msg = msg;
    	}
    	
    	public CodeMsg fillArgs(Object... args) {
    		int code = this.code;
    		String message = String.format(this.msg, args);
    		return new CodeMsg(code, message);
    	}
    
    	@Override
    	public String toString() {
    		return "CodeMsg [code=" + code + ", msg=" + msg + "]";
    	}
    	
    	
    }

泛型

public class Result<T> {
    	
    	private int code;
    	private String msg;
    	private T data;
    	
    	/**
    	 *  成功时候的调用
    	 * */
    	public static  <T> Result<T> success(T data){
    		return new Result<T>(data);
    	}
    	
    	/**
    	 *  失败时候的调用
    	 * */
    	public static  <T> Result<T> error(CodeMsg codeMsg){
    		return new Result<T>(codeMsg);
    	}
    	
    	private Result(T data) {
    		this.data = data;
    	}
    	
    	private Result(int code, String msg) {
    		this.code = code;
    		this.msg = msg;
    	}
    	
    	private Result(CodeMsg codeMsg) {
    		if(codeMsg != null) {
    			this.code = codeMsg.getCode();
    			this.msg = codeMsg.getMsg();
    		}
    	}
    	
    	
    	public int getCode() {
    		return code;
    	}
    	public void setCode(int code) {
    		this.code = code;
    	}
    	public String getMsg() {
    		return msg;
    	}
    	public void setMsg(String msg) {
    		this.msg = msg;
    	}
    	public T getData() {
    		return data;
    	}
    	public void setData(T data) {
    		this.data = data;
    	}
    }

编写启动类

import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    
    @SpringBootApplication
    public class MainApplication {
    
        public static void main(String[] args) throws Exception {
            SpringApplication.run(MainApplication.class, args);
        }
    }

SampleController

@Controller
    @RequestMapping("/demo")
    public class SampleController {
    
        /**
         * 使用Model往模板里面传递参数
         * @param model
         * @return
         */
        @RequestMapping("/hello/themaleaf")
        public String themaleaf(Model model) {
            model.addAttribute("name", "Joshua");
            return "hello";
        }
    
    }

编写themaleaf配置

**application.properties**

#thymeleaf
    # 前缀
    spring.thymeleaf.prefix=classpath:/templates/
    # 后缀
    spring.thymeleaf.suffix=.html

创建themaleaf模板

hello.html

<!DOCTYPE HTML>
    <html xmlns:th="http://www.thymeleaf.org">
    <head>
        <title>hello</title>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    </head>
    <body>
    <p th:text="'hello:'+${name}" ></p>
    </body>
    </html>

将resources添加到源码目录

鼠标右击resources->Mark Directory as ->Sources Root

右击MainApplication ->Run 'MainApplication'

访问:localhost:8080/demo/thymeleaf

备注：IDEA导入项目

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选中项目

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