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Spring Security表单身份验证示例图解

基于表单的身份验证是一种通过登录表单完成用户身份验证的方式。该表格是内置的, 由Spring安全框架提供。

HttpSecurity类提供了一个方法formLogin(), 该方法负责呈现登录表单并验证用户凭据。

在本教程中, 我们将创建一个实现基于表单的身份验证的示例。让我们开始这个例子。

创建一个Maven项目

首先通过提供项目详细信息来创建一个Maven项目。

Spring Security表单身份验证示例图解

该项目最初看起来像这样:

Spring Security表单身份验证示例图解2

Spring安全配置

使用以下Java文件在应用程序中配置spring安全性。创建一个包com.srcmini并将所有文件放入其中。

// AppConfig.java

package com.srcmini;  
import org.springframework.context.annotation.Bean;  
import org.springframework.context.annotation.ComponentScan;  
import org.springframework.context.annotation.Configuration;  
import org.springframework.web.servlet.config.annotation.EnableWebMvc;  
import org.springframework.web.servlet.view.InternalResourceViewResolver;  
import org.springframework.web.servlet.view.JstlView;  
@EnableWebMvc  
@Configuration  
@ComponentScan({ "com.srcmini.controller.*" })  
public class AppConfig {  
    @Bean  
    public InternalResourceViewResolver viewResolver() {  
        InternalResourceViewResolver viewResolver  
                          = new InternalResourceViewResolver();  
        //viewResolver.setViewClass(JstlView.class);  
        viewResolver.setPrefix("/WEB-INF/views/");  
        viewResolver.setSuffix(".jsp");  
        return viewResolver;  
    }  
}

// MvcWebApplicationInitializer.java

package com.srcmini;  
import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;  
public class MvcWebApplicationInitializer extends  
        AbstractAnnotationConfigDispatcherServletInitializer {  
    @Override  
    protected Class<?>[] getRootConfigClasses() {  
        return new Class[] { WebSecurityConfig.class };  
    }  
    @Override  
    protected Class<?>[] getServletConfigClasses() {  
        // TODO Auto-generated method stub  
        return null;  
    } 
    @Override  
    protected String[] getServletMappings() {  
        return new String[] { "/" };  
    }  
}

// SecurityWebApplicationInitializer.java

package com.srcmini;  
import org.springframework.security.web.context.*;  
public class SecurityWebApplicationInitializer extends AbstractSecurityWebApplicationInitializer {  
    }

// WebSecuiryConfig.java

package com.srcmini;
import org.springframework.context.annotation.*;    
import org.springframework.security.config.annotation.web.builders.HttpSecurity;  
import org.springframework.security.config.annotation.web.configuration.*;  
import org.springframework.security.core.userdetails.*;  
import org.springframework.security.provisioning.InMemoryUserDetailsManager;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;  
@EnableWebSecurity  
@ComponentScan("com.srcmini")  
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {  
  @Bean  
  public UserDetailsService userDetailsService() {  
      InMemoryUserDetailsManager manager = new InMemoryUserDetailsManager();  
      manager.createUser(User.withDefaultPasswordEncoder()
      .username("admin").password("admin123").roles("ADMIN").build());  
      return manager;  
  }  
  @Override  
  protected void configure(HttpSecurity http) throws Exception {  
	  http.authorizeRequests().
	  antMatchers("/index", "/user", "/").permitAll()
	  .antMatchers("/admin").authenticated()
	  .and()
	  .formLogin() // It renders a login form 
	  .and()
	  .logout()
	  .logoutRequestMatcher(new AntPathRequestMatcher("/logout"));	  
  }  
}

控制者

创建一个控制器HomeController并将其放入com.srcmini.controller包中。它包含以下代码。

// HomeController.java

package com.srcmini.controller;  
    import org.springframework.stereotype.Controller;  
    import org.springframework.web.bind.annotation.RequestMapping;  
    import org.springframework.web.bind.annotation.RequestMethod;  
    
    @Controller  
    public class HomeController {  
          
        @RequestMapping(value="/", method=RequestMethod.GET)  
        public String index() {  
              
            return "index";  
        }  
        @RequestMapping(value="/admin", method=RequestMethod.GET)  
        public String admin() {  
              
            return "admin";  
        }  
    }

观看次数

该项目包含以下两个视图(JSP页面)。将它们放入WEB-INF / views文件夹。

// index.jsp

<html>  
<head>    
<title>Index Page</title>  
</head>  
<body>  
Welcome to srcmini! <br> <br>
<a href="admin">Admin login</a>  
</body>  
</html>

// admin.jsp

<html>  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
<title>Home Page</title>  
</head>  
<body>  
<span style="color: green;">login successful!</span>
<a href="logout">Logout</a>
<hr>
	<h3>Welcome Admin</h3>  
</body>  
</html>

项目依赖

// pom.xml

<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.srcmini</groupId>
  <artifactId>springsecurity</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <properties>  
    <maven.compiler.target>1.8</maven.compiler.target>  
    <maven.compiler.source>1.8</maven.compiler.source>  
</properties>  
<dependencies>  
  <dependency>  
            <groupId>org.springframework</groupId>  
            <artifactId>spring-webmvc</artifactId>  
            <version>5.0.2.RELEASE</version>  
        </dependency>  
        <dependency>  
        <groupId>org.springframework.security</groupId>  
        <artifactId>spring-security-web</artifactId>  
        <version>5.0.0.RELEASE</version>  
    </dependency>  
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-core</artifactId>
    <version>5.0.4.RELEASE</version>
</dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework.security/spring-security-config -->
<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-config</artifactId>
    <version>5.0.4.RELEASE</version>
</dependency>
    
      
        <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->  
<dependency>  
    <groupId>javax.servlet</groupId>  
    <artifactId>javax.servlet-api</artifactId>  
    <version>3.1.0</version>  
    <scope>provided</scope>  
</dependency>  
<dependency>  
    <groupId>javax.servlet</groupId>  
    <artifactId>jstl</artifactId>  
    <version>1.2</version>  
</dependency>  
</dependencies>  
  <build>  
    <plugins>  
        <plugin>  
            <groupId>org.apache.maven.plugins</groupId>  
            <artifactId>maven-war-plugin</artifactId>  
            <version>2.6</version>  
            <configuration>  
                <failOnMissingWebXml>false</failOnMissingWebXml>  
            </configuration>  
        </plugin>  
    </plugins>  
</build>  
</project>

项目结构

添加所有这些文件后, 项目结构如下所示:

Spring Security表单身份验证示例图解3

运行服务器

在服务器上运行该应用程序, 然后看到它向浏览器产生以下输出。

输出

Spring Security表单身份验证示例图解4

单击链接, 将呈现一个登录表单, 该表单将用于基于表单的身份验证。

Spring Security表单身份验证示例图解5

验证凭据后, 它将验证用户身份并呈现到管理页面。

Spring Security表单身份验证示例图解6
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