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springboot 整合vue就行前后端完全分离,监听器,过滤器,拦截器,nginx

HTML 4.09% JavaScript 18.36% Vue 13.49% Java 64.06%

spring-boot-vue-separate's Introduction

感谢

感谢作者:Boyle
from:https://github.com/boylegu/SpringBoot-vue
大部分都是来自于Boyle的项目

感谢作者:janessssss
https://github.com/janessssss/vuejs-element
借用了user  curd 的demo

感谢作者:lin-xin
https://github.com/lin-xin/vue-manage-system

目的

练习spring-boot 整合vue

运行

启动boot项目在8000端口

在cmd命令行到front目录先安装vue环境(npm install,当然前提是 安装了nodejs)
然后运行front,在命令行中:npm dev run 


boyle 的github 也有介绍请参考:https://github.com/boylegu/SpringBoot-vue

需要注意的地方

踩坑1:PageNumber:对jpa查询后的number进行了修正(默认是0 ,而前端页面需要的是1)
采坑2:在User类中,如果创建时间使用create_time,下划线的方式连接变量,那采用jpa根据字段排序的时候是无法区分的,
改用驼峰式的命名就好啦


和这个项目配套的前段项目可以是本项目的front
也可以是:https://github.com/ninuxGithub/vue-front-end

jpa分页

重点:分页对象的repository要继承JpaSpecificationExecutor

	public Page<T> queryPagination(Integer page, Integer perPage, String sortType, Map<String, Object> params,
			Class<?> beanClass) {
		if (page == null) {
			page = 1;
		}
		Sort sort = null;
		Direction direction = Direction.ASC;
		if (StringUtils.isBlank(sortType)) {
			sort = new Sort(direction, "id");
		} else {
			if (sortType.startsWith("-")) {
				direction = Direction.DESC;
				sortType = sortType.substring(1);
			}
			sort = new Sort(direction, sortType);
		}
		// 创建pageable对象
		Pageable pageable = new PageRequest(page - 1, perPage == null ? maxPerPage : perPage, sort);
		// 开始获取分页的JpaSpecificationExecutor
		JpaSpecificationExecutor<T> bean = (JpaSpecificationExecutor<T>) springUtil.getBean(beanClass);
		logger.info("sort field :{} queryPagination run...", sortType);
		// 开始分页
		Page<T> pagination = bean.findAll(new Specification<T>() {
			@Override
			public Predicate toPredicate(Root<T> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
				List<Predicate> predicatList = new ArrayList<>();
				for (String field : params.keySet()) {
					Object value = params.get(field);
					if (null != value && StringUtils.isNotBlank(value.toString())) {
						//有些字段是不可以采用like的 例如Double ...
						predicatList.add(cb.like(root.get(field), "%" + value + "%"));
					}
				}
				Predicate[] arrayPredicates = new Predicate[predicatList.size()];
				return cb.and(predicatList.toArray(arrayPredicates));
			}
		}, pageable);
		// 对分页的PageNumber 进行调整
		return new PageNumber<>(pagination.getContent(), pageable, pagination.getTotalElements());
	}

element-ui fileupload

文件上组件的使用,以及spring-boot 后台对文件上传的处理

vue 组件的变量传递,组件的通信

可以参考StudentTable.vue ,SearchStudent.vue, 重点在 'keywords': 'filterResultData' 收到vue的监控,如果搜索的变量发送了改变,那么就会触发filterResultData,进行搜索返回分页的结果 再通过Even发送给StudentTable.vue组件,实现了变量的传递,从而实现了组件的通信

filter,interceptor,listener 注解实现的方式

filter: 采用注解@Order(value = Ordered.HIGHEST_PRECEDENCE)@WebFilter(urlPatterns = "/*", filterName = "apiFilter") , 实现接口javax.servlet.Filter

interceptor: 需要实现接口:org.springframework.web.servlet.HandlerInterceptor,并且在webmvconfig 中的addInterceptors方法中注入拦截器

listener: javax.servlet.http.HttpSessionListener--session级别(经过采坑,requestMapping 方法需要有HttpSession的入参,才会得到监听) javax.servlet.ServletContextListener--servlet容器配置 javax.servlet.ServletRequestListener--request级别的监听 另外还有一个重要的点就是需要在applicaton中加入注解@ServletComponentScan,扫描组件

axois 发送post get

	//get
	axios.get(this.url,{params:this.filter}).then((response) =>{
		this.students = response.data.content;
	}).catch((response)=>{
		this.$message.error('message');
	});
   		
   	//axios post 需要借助qs 将参数sringify
    var qs = require('qs');
    axios.post('/api/changeColor',qs.stringify({'color':color})).then(function(response) {

    }).catch(function(error) {

    });	
   		

效果

img

##Nginx 配置文件

#Nginx所用用户和组,window下不指定
#user  niumd niumd;
#工作的子进程数量(通常等于CPU数量或者2倍于CPU)
worker_processes  2;
#错误日志存放路径
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
error_log  logs/error.log  info;
#指定pid存放文件
pid        logs/nginx.pid;
events {
	#使用网络IO模型linux建议epoll,FreeBSD建议采用kqueue,window下不指定。
	#use epoll;
	#允许最大连接数
	worker_connections 1024;
}
http {
    include       mime.types;
	default_type  application/octet-stream;
	#定义日志格式
	#log_format main '$remote_addr - $remote_user [$time_local] $request '
	#'"$status" $body_bytes_sent "$http_referer" '
	#'"$http_user_agent" "$http_x_forwarded_for"';
	#access_log off;
	access_log  logs/access.log;
    client_header_timeout 3m;
    client_body_timeout 3m;
    send_timeout 3m;
    client_header_buffer_size 1k;
    large_client_header_buffers 4 4k;
    sendfile on;
    tcp_nopush on;
    tcp_nodelay on;
	#keepalive_timeout 75 20;
    include gzip.conf;
    upstream backend_server {
		#根据ip计算将请求分配各那个后端tomcat,许多人误认为可以解决session问题,其实并不能。
		#同一机器在多网情况下,路由切换,ip可能不同
		#ip_hash;
        server localhost:8000 weight=5;
		server localhost:9000 weight=5;
    }

    #访问nginx自带的页面nginx首页地址:http://www.nginxserver.com:8080/
    server {
    	listen 8080;
        server_name  www.nginxserver.com;
        index index.html index.htm;
        root html;
        location /{
    
        }
    }

    #通过代理访问后台的服务器:http://www.nginxserver.com/
    server {
        listen 80;
        server_name  www.nginxserver.com;
        #index index.html index.htm;
        #root html;
		
        location / {
            #proxy_connect_timeout 3;
            #proxy_send_timeout 30;
            #proxy_read_timeout 30;
			
            proxy_pass http://backend_server;
			
			#proxy config
            proxy_redirect          off;
			proxy_set_header        Host $host:$server_port;
			proxy_set_header        X-Real-IP $remote_addr;
			proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
            client_max_body_size    10m;
			client_body_buffer_size 128k;
			proxy_connect_timeout   300;
			proxy_send_timeout      300;
			proxy_read_timeout      300;
			proxy_buffer_size       4k;
			proxy_buffers           4 32k;
			proxy_busy_buffers_size 64k;
			proxy_temp_file_write_size 64k;
        }
    }
}

server_name www.nginxserver.com 需要配置到host里面

[参考] nginx反向代理配置keepalive keepalive for HTTP - Module ngx_http_core_module

  1. Tomcat conf/server.xml:

    <Connector port="8080" protocol="org.apache.coyote.http11.Http11NioProtocol" maxThreads="768" minSpareThreads="512" acceptCount="128"

            connectionTimeout="1000"
            maxConnections="1024"
            keepAliveTimeout="300000"
            maxKeepAliveRequests="768"
            
            enableLookups="false"
            URIEncoding="utf-8"
            redirectPort="8443"
            compression="on" compressionMinSize="1024" compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain,application/json,application/xml"
            server="webserver" />
    

[参考] The HTTP Connector - Tomcat 7 Configuration Reference

  1. Client 客户端HTTP "Keep-Alive"实现代码,请打开下一行的链接。 KeepAliveHttpClientsTest -> httpclient-x

【结果验证】 使用 "sudo netstat -antp | grep 80" 监控与Nginx相关的线程状态

select , poll , epoll 的区别

博客链接

spring-boot-vue-separate's People

Contributors

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