Spring Security Basic Authentication

原文地址：http://www.javaarch.net/jiagoushi/696.htm

Spring Security Basic Authentication

spring security 配置

	<?xml version="1.0" encoding="UTF-8"?>
	<beans:beans xmlns="http://www.springframework.org/schema/security"
		xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
		xmlns:beans="http://www.springframework.org/schema/beans"
		xsi:schemaLocation="
			http://www.springframework.org/schema/security 
			http://www.springframework.org/schema/security/spring-security-3.1.xsd
			http://www.springframework.org/schema/beans 
			http://www.springframework.org/schema/beans/spring-beans-3.2.xsd">
	 
		<http use-expressions="true">
			<intercept-url pattern="/**" access="isAuthenticated()" />
	 
			<http-basic />
		</http>
	 
		<authentication-manager>
			<authentication-provider>
				<user-service>
					<user name="user1" password="user1Pass" authorities="ROLE_USER" />
				</user-service>
			</authentication-provider>
		</authentication-manager>
	 
	</beans:beans>
	
 <http-basic>打开basic验证，
 
 如果我们访问：curl -i http://localhost:8080/spring-security-basic-auth/homepage.html
 
 会返回401
 
	HTTP/1.1 401 Unauthorized
	Server: Apache-Coyote/1.1
	Set-Cookie: JSESSIONID=E5A8D3C16B65A0A007CFAACAEEE6916B; Path=/spring-security-basic-auth/; HttpOnly
	WWW-Authenticate: Basic realm="Spring Security Application"
	Content-Type: text/html;charset=utf-8
	Content-Length: 1061
	Date: Wed, 29 May 2013 15:14:08 GMT
	
如果我们使用下面的url访问：curl -i --user user1:user1Pass http://localhost:8080/spring-security-basic-auth/homepage.html

则返回200

	HTTP/1.1 200 OK
	Server: Apache-Coyote/1.1
	Set-Cookie: JSESSIONID=301225C7AE7C74B0892887389996785D; Path=/spring-security-basic-auth/; HttpOnly
	Content-Type: text/html;charset=ISO-8859-1
	Content-Language: en-US
	Content-Length: 90
	Date: Wed, 29 May 2013 15:19:38 GMT
	
我们也可以使用spring提供的扩展接口来实现验证结果自定义

	<http-basic entry-point-ref="myBasicAuthenticationEntryPoint" />
	
	@Component
	public class MyBasicAuthenticationEntryPoint extends BasicAuthenticationEntryPoint {
	 
		@Override
		public void commence
		  (HttpServletRequest request, HttpServletResponse response, AuthenticationException authEx) 
		  throws IOException, ServletException {
			response.addHeader("WWW-Authenticate", "Basic realm=\"" + getRealmName() + "\"");
			response.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
			PrintWriter writer = response.getWriter();
			writer.println("HTTP Status 401 - " + authEx.getMessage());
		}
	 
		@Override
		public void afterPropertiesSet() throws Exception {
			setRealmName("Baeldung");
			super.afterPropertiesSet();
		}
	}