Fastjson 是常用的JSON库之一<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.78</version> </dependency>JAVA对象转换为JSON字符串String text = JSON.toJSONString(obj);更具体的示例JSONObject obj = new JSONObject(); List&...
安装PostgreSQL14安装PostgreSQL14在官网上有介绍。非常全面。我们这里使用CentOS7:::bash # Install the repository RPM: sudo yum install -y https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm # Install PostgreSQL: sudo yum install -y postgresql14-server # Optionally initia...
安装使用在centos7中，我们使用RabbbitMQ比较简单，只需要yum安装就可以了。yum install epel-release yum install rabbitmq-server启动rabbitmqsystemctl start rabbitmq-server systemctl enable rabbitmq-server开启managementrabbitmq-plugins list rabbitmq-plugins enable rabbitmq_management systemctl restart rabbitmq-server访问管理界面注意需要关闭防火墙...