springboot中的RestfulCRUD（1）

最新推荐文章于 2020-07-16 20:16:15 发布

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本文介绍如何在Spring Boot项目中配置并使用Thymeleaf模板引擎，包括添加依赖、配置属性、实现登录拦截器及自定义配置类。

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一，配置相关文件

1.加入thymeleaf模板，jQuery坐标，bootstrap坐标，nekohtml坐标

<!--启用不严格检查html-->
<dependency>
   <groupId>net.sourceforge.nekohtml</groupId>
   <artifactId>nekohtml</artifactId>
   <version>1.9.22</version>
</dependency>

<dependency>
   <groupId>org.webjars</groupId>
   <artifactId>bootstrap</artifactId>
   <version>4.1.0</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.webjars.bower/jquery -->
<dependency>
   <groupId>org.webjars.bower</groupId>
   <artifactId>jquery</artifactId>
   <version>3.2.1</version>
</dependency>
<!--thymeleaf模板-->
<dependency>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>

2.编写application.properties文件

spring.thymeleaf.cache=false

spring.thymeleaf.mode=LEGACYHTML5

3.编写登陆拦截类

public class LoginInterceptor implements HandlerInterceptor {
    /**
     * 访问前拦截
     * @param request
     * @param response
     * @param handler
     * @return true 放行 false 拦截
     * @throws Exception
     * */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.err.println("---进入拦截器--");
        HttpSession session = request.getSession();
        Object loginUser = session.getAttribute("loginUser");
        if (loginUser==null){
            //采取转发
            request.getRequestDispatcher("/index.html").forward(request,response);
            return false;
        }else {
            return  true;//放行
        }
    }

4.编写config类

package cn.vp.config;

import cn.vp.interceptor.LoginInterceptor;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.*;

import java.util.Arrays;

/**
 *
 */
@Configuration
//@EnableAutoConfiguration //表示springBoot不再托管springMvc
public class MyConfig  extends WebMvcConfigurerAdapter {
    //作用：登陆时，只能通过"/login","/","/index.html"
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
       registry.addInterceptor(new LoginInterceptor()).excludePathPatterns("/login","/","/index.html");
    }

    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        // super.addViewControllers(registry);
        registry.addViewController("/").setViewName("login");
        registry.addViewController("/index.html").setViewName("login");
        registry.addViewController("/dashboard.html").setViewName("dashboard");
        registry.addViewController("/list.html").setViewName("list");
    }

}