Implementation and Introduction of Shiro's Simple Hello Word

shiro

 

(java security framework)    

Apache Shiro is a powerful and easy-to-use Java security framework that performs authentication, authorization, cryptography and session management. Using Shiro's easy-to-understand API, you can quickly and easily get any application, from the smallest mobile applications to the largest web and enterprise applications.

The following is a simple implementation of hello word

                

                

                          

              

Next, add the core package of shiro in the pom.xml file

<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.hp.shiro</groupId>
  <artifactId>Shiro</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <name>Shiro</name>
  <description>Shiro</description>
  
  <dependencies>
  
  <!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-core -->
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-core</artifactId>
    <version>1.4.0</version>
</dependency>
  <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.8.0-beta2</version>
    <scope>test</scope>
</dependency>
  <dependency>
        <groupId>commons-logging</groupId>
        <artifactId>commons-logging</artifactId>
        <version>1.2</version>
</dependency>
  </dependencies>
</project>

Add the username and password required for login in src/main/resources. Since it is the first hello word, it does not connect to the database for verification, as shown in the figure

(Note that the file needs to be placed in resources to be read)

              

                                    

package com.hp.hello;

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.UsernamePasswordToken;
import org.apache.shiro.config.IniSecurityManagerFactory;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.util.Factory;

public class HelloWord {
	public static void main(String[] args) {
		//Read the configuration file to initialize the SecurityManager factory IniSecurityManagerFactory
		Factory<SecurityManager> factory=new IniSecurityManagerFactory("classpath:shiro.ini");
		//Get the SecurityManager instance
		SecurityManager instance = factory.getInstance();
		//Bind the instance of SecurityManager to SecurityUtils
		SecurityUtils.setSecurityManager(instance);
		//Get the currently executing user
		Subject subject = SecurityUtils.getSubject();
		//create token token username/password
		UsernamePasswordToken token=new UsernamePasswordToken("hello", "1123");
		try{			
			//login/authentication
			subject.login(token);
			System.out.println("Authentication successful...");
		}catch(Exception e){
			System.out.println("Authentication failed...");
		}
		//quit
		subject.logout();
	}
}

Then run the project as shown in the figure, see the input error

Change the username and password to the correct one

There is also a bug, the log4j log can't come out, and I will solve it next time