ndidai的博客

之前没用过jackson，第一次用记录下工具类public class JSONUtil { private final static ObjectMapper mapper; static{ mapper = new ObjectMapper(); // 忽略json中在对象不存在对应属性 mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); // 忽略空

安装appium下载node：wget https://cdn.npm.taobao.org/dist/node/v14.17.4/node-v14.17.4-linux-x64.tar.xz解压：tar -xvf node-v14.17.4-linux-x64.tar.xz配置环境变量：vim /etc/profile 底部插入：环境变量生效：source /etc/profile验证：node -v 出现版本号 npm -v 出现版本号安装appium：npm in...

centos7安装后默认安装的是python2.7，本想卸载安卓python3用yum卸载时发现yum依赖python2安装依赖yum -y groupinstall "Development tools"yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

public class Student { private String name; private Integer age; private Integer math; private Integer english; //get set public Student(String name, Integer age, Integer math, Integer english) { super(); this.name = name; this.age = age; ...

1.Supplier接口Supplier接口是一个供给类型的接口，仅包含一个无参的方法： T get() 。用来获取一个泛型参数指定类型的对象数据。import java.util.function.Supplier;public class SupplierDemo { private String getStr(Supplier<String> fun) {//参数是函数式接口 return fun.get(); } public static void main(

RedHat6.5 配置本地yum源1.挂载光盘：mount dev/cdrom /mnt/    挂载目录自定义2.编辑yum源配置文件：vim /etc/yum.repos.d/rhel-source.repo   编辑前最好将文件备份一下[rhel-source]name=Red Hat Enterprise Linux $releasever - $basearch - S

Redhat6.5 安装光盘自带mysql5.11.yum install mysql-server.* -y2.安装完成后启动MySQL:  service mysqld start3.启动成功后登陆MySQL：[root@bogon ~]# mysql4.更改设置root密码:  设置成功后就可以用 mysql -uroot -p 登陆了use mysql;update