How to install google-chrome on centos 7.5

[root@cloud ~]# cat > /etc/yum.repos.d/google-chrome.repo
[google-chrome]
name=google-chrome
baseurl=http://dl.google.com/linux/chrome/rpm/stable/$basearch
enabled=1
gpgcheck=0  
gpgkey=https://dl-ssl.google.com/linux/linux_signing_key.pub


[root@cloud ~]# yum -y install google-chrome-stable --nogpgcheck

cat > /usr/bin/google-chrome
#!/bin/bash
#
# Copyright (c) 2011 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Let the wrapped binary know that it has been run through the wrapper.
export CHROME_WRAPPER="`readlink -f "$0"`"

HERE="`dirname "$CHROME_WRAPPER"`"

# We include some xdg utilities next to the binary, and we want to prefer them
# over the system versions when we know the system versions are very old. We
# detect whether the system xdg utilities are sufficiently new to be likely to
# work for us by looking for xdg-settings. If we find it, we leave $PATH alone,
# so that the system xdg utilities (including any distro patches) will be used.
if ! which xdg-settings &> /dev/null; then
  # Old xdg utilities. Prepend $HERE to $PATH to use ours instead.
  export PATH="$HERE:$PATH"
else
  # Use system xdg utilities. But first create mimeapps.list if it doesn't
  # exist; some systems have bugs in xdg-mime that make it fail without it.
  xdg_app_dir="${XDG_DATA_HOME:-$HOME/.local/share/applications}"
  mkdir -p "$xdg_app_dir"
  [ -f "$xdg_app_dir/mimeapps.list" ] || touch "$xdg_app_dir/mimeapps.list"
fi

# Always use our versions of ffmpeg libs.
# This also makes RPMs find the compatibly-named library symlinks.
if [[ -n "$LD_LIBRARY_PATH" ]]; then
  LD_LIBRARY_PATH="$HERE:$HERE/lib:$LD_LIBRARY_PATH"
else
  LD_LIBRARY_PATH="$HERE:$HERE/lib"
fi
export LD_LIBRARY_PATH

export CHROME_VERSION_EXTRA="stable"

# We don't want bug-buddy intercepting our crashes. http://crbug.com/24120
export GNOME_DISABLE_CRASH_DIALOG=SET_BY_GOOGLE_CHROME

# Sanitize std{in,out,err} because they'll be shared with untrusted child
# processes (http://crbug.com/376567).
exec < /dev/null
exec > >(exec cat)
exec 2> >(exec cat >&2)

# Make sure that the profile directory specified in the environment, if any,
# overrides the default.
if [[ -n "$CHROME_USER_DATA_DIR" ]]; then
  # Note: exec -a below is a bashism.
  exec -a "$0" "$HERE/chrome"  
    --user-data-dir="$CHROME_USER_DATA_DIR" "$@"

else
  exec -a "$0" "$HERE/chrome" "$@" --no-sandbox --user-data-dir
fi

 安装完Google的浏览器后，如何进一步安装Google浏览器的插件Postman

第1步：在Windows系统上下载Postman-linux-x64-7.11.0.tar.gz软件包（当然你可以直接在虚拟机里面的直接下载此软件包）

第2步：例如在虚拟机里面的CentOS8上面安装lrzsz软件包，使用Windows系统上安装的SecureCRT命令终端图形化工具

         将软件包Postman-linux-x64-7.11.0.tar.gz传输到CentOS8系统里

[root@contoso ~]# yum install lrzsz

[root@contoso ~]# ls
anaconda-ks.cfg  initial-setup-ks.cfg  Postman-linux-x64-7.11.0.tar.gz
[root@contoso ~]# pwd
/root
[root@contoso ~]# tar -xzf Postman-linux-x64-7.11.0.tar.gz -C /opt
[root@contoso ~]# ln -s /opt/Postman/Postman /usr/bin/postman

我们可以直接在/opt/Postman目录下点击快捷方式图标Postman启动postman插件工具

--------------------------------------------------------------------------------------------

[root@cloud ~]# git config --global user.name "zhengzizhi"
[root@cloud ~]# git config --global user.email "zhengzizhi@aliyun.com"
[root@cloud ~]# git config --list
user.name=zhengzizhi
user.email=zhengzizhi@aliyun.com
[root@cloud ~]#

[root@cloud ~]# find / -name .git
/opt/coding/microservice-store/.git
[root@cloud ~]# cd /opt/coding/microservice-store/.git
[root@cloud .git]# ls
branches  COMMIT_EDITMSG  config  description  HEAD  hooks  index  info  logs  objects  packed-refs  refs
[root@cloud .git]# cat > config
[core]
        repositoryformatversion = 0
        filemode = true
        bare = false
        logallrefupdates = true
[remote "origin"]
        url = https://github.com/zhengzizhi/microservice-store.git
        fetch = +refs/heads/*:refs/remotes/origin/*
[branch "master"]
        remote = origin
        merge = refs/heads/master
[root@cloud .git]# 

SET PASSWORD FOR 'root'@'127.0.0.1' = PASSWORD('dbpass');
SET PASSWORD FOR 'root'@'localhost' = PASSWORD('dbpass');
FLUSH PRIVILEGES;

正式进入本篇主题

Spring Boot 2 初始化数据库脚本 data.sql & schema.sql 必须提供三组同样的用户名称和用户密码

这在官网和互联网上目前没人提及

application.yml正确的配置格式如下：

spring:
  profiles: development 
  datasource:
    url: jdbc:mysql://127.0.0.1:3306/dev?useSSL=false
    username: root
    password: dbpass
    schema-username: root
    schema-password: dbpass
    data-username: root
    data-password: dbpass
    platform: mysql
    schema: classpath:schema.sql
    data: classpath:data.sql
    continue-on-error: true
    initialization-mode: always

再举一范例

创建的表结构由jpa定义的对象实体映射生成，只定义表数据初始化文件data.sql：

application.yml

#security:
#  oauth2:
#    client:
#      client-id: bd1c0a783ccdd1c9b9e4
#      client-secret: 1a9030fbca47a5b2c28e92f19050bb77824b5ad1
#      access-token-uri: https://github.com/login/oauth/access_token
#      user-authorization-uri: https://github.com/login/oauth/authorize
#      client-authentication-scheme: form
#    resource:
#      user-info-uri: https://api.github.com/user
#      prefer-token-info: false
spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/db1?useSSL=false
    username: root
    password: 123456
    data-username: root
    data-password: 123456
    initialization-mode: always
  jpa:
    database-platform: org.hibernate.dialect.MySQL5Dialect
    hibernate:
      ddl-auto: create-drop

如果缺少 database-platform: org.hibernate.dialect.MySQL5Dialect 配置项，那么编译时会报告如下错误并退出编译：

Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set

data.sql

INSERT INTO employee(id,name,birth,address)VALUES(1823,'Jack Chen','1993-05-29','Beijing');
INSERT INTO employee(id,name,birth,address)VALUES(1202,'Tim He','1986-12-26','Shanghai');
INSERT INTO employee(id,name,birth,address)VALUES(1304,'John Hu','1980-01-08','Shanxi');

Employee.java 

package com.contoso.employee;

import java.util.Date;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Employee {
	
	@Id
	@GeneratedValue(strategy = GenerationType.AUTO)
	private Long id;
	private String name;
	private Date birth;
	private String address;

	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Date getBirth() {
		
		return birth;
	}

	public void setBirth(Date birth) {
		this.birth = birth;
	}

	public String getAddress() {
		return address;
	}

	public void setAddress(String address) {
		this.address = address;
	}

}

EmployeeRepository.java     允许有同名同姓的雇员

package com.contoso.employee;

import java.util.List;

import org.springframework.data.repository.PagingAndSortingRepository;
import org.springframework.data.repository.query.Param;
import org.springframework.data.rest.core.annotation.RepositoryRestResource;

@RepositoryRestResource(collectionResourceRel = "employee", path = "employee")
public interface EmployeeRepository extends PagingAndSortingRepository<Employee, Long> {
	List<Employee> findEmployeeByName(@Param("name") String name);
}

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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.contoso</groupId>
	<artifactId>spring-cloud-security</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>spring-cloud-security</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.0.4.RELEASE</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
		<java.version>1.8</java.version>
		<spring-cloud.version>Finchley.SR1</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-oauth2</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-security</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-rest</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-rest-hal-browser</artifactId>
		</dependency>

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>org.springframework.cloud</groupId>
				<artifactId>spring-cloud-dependencies</artifactId>
				<version>${spring-cloud.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>


</project>

https://www.boraji.com/spring-security-5-jdbc-based-authentication-example