[英]@Autowired not working in Spring Security
I'm implementing Spring Security using Java configuration in my Spring Web MVC project, and for some reason the @Autowired
annotation is not injecting fields in my security config class. 我正在Spring Web MVC项目中使用Java配置来实现Spring Security,由于某种原因,@
@Autowired
注释未在我的安全配置类中注入字段。 I found this very similar question on SO, but my setup is much simpler and the accepted answer doesn't apply at all in my case. 我在SO上发现了一个非常相似的问题,但我的设置要简单得多,并且可接受的答案根本不适用于我的情况。
For reference, I followed the first three chapters of Spring's own security documentation ( here ) and got in-memory authentication working pretty quickly. 作为参考,我遵循了Spring自己的安全性文档的前三章( 在此处 ),并使内存内身份验证工作很快。 I then wanted to switch to JDBC authentication and inject a
DataSource
with the @Autowired
annotation (as shown in this example ). 然后,我想切换到JDBC身份验证,并注入带有
@Autowired
批注的DataSource
(如本示例所示)。 However, I get this error: 但是,我收到此错误:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'securityConfig': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource com.tyedart.web.config.security.SecurityConfig.dataSource; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
Here is my security config class. 这是我的安全配置类。 As you can see I'm working around the problem by explicitly looking up my data source:
如您所见,我通过显式查找数据源来解决此问题:
@Configuration
@EnableWebMvcSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {
// @Autowired
// private DataSource dataSource;
// @Autowired
// public PasswordEncoder passwordEncoder;
@Autowired
public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
InitialContext ctx = new InitialContext();
DataSource dataSource = (DataSource) ctx.lookup("java:/comp/env/jdbc/TyedArtDB");
PasswordEncoder passwordEncoder = new BCryptPasswordEncoder();
auth
.jdbcAuthentication()
.dataSource(dataSource)
.passwordEncoder(passwordEncoder);
}
@Override
public void configure(HttpSecurity http) throws Exception {
http
.authorizeRequests()
.antMatchers("/manage/**").hasRole("ADMIN")
.and()
.formLogin();
}
}
And here is my very simple root-context.xml: 这是我非常简单的root-context.xml:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd">
<!-- Root Context: defines shared resources visible to all other web components -->
<jee:jndi-lookup id="dataSource" jndi-name="jdbc/TyedArtDB"/>
<bean id="passwordEncoder" class="org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder"/>
</beans>
What am I doing wrong? 我究竟做错了什么?
Add <context:component-scan base-package="your.package.where.your.bean.is"/>
in root-context.xml 在root-context.xml中添加
<context:component-scan base-package="your.package.where.your.bean.is"/>
You can uncomment the @Autowired in field declaration and remove it from the constractor. 您可以在字段声明中取消注释@Autowired并将其从承包商中删除。 You can find more info here
您可以在这里找到更多信息
If you @Autowired
a bean, don't forget to remove the initialization using new
. 如果
@Autowired
一个bean,请不要忘记使用new
删除初始化。
I'm not 100% sure, but it looks like the problem is you are trying to Autowire DataSource, which has not actually been defined as a Spring bean: 我不确定100%,但是看来问题出在您要尝试自动装配DataSource,而实际上尚未将其定义为Spring bean:
<jee:jndi-lookup id="dataSource" jndi-name="jdbc/TyedArtDB"/>
Creates an object that can be referenced in XML, but don't think it actually creates a bean? 创建一个可以用XML引用的对象,但是不认为它实际上创建了一个bean? (could be wrong, don't really do much with JNDI lookups in spring).
(可能是错误的,实际上在春季对JNDI查找没有做太多事情)。
Is it possible to switch over to pure java config and drop the XML references? 是否可以切换到纯Java配置并删除XML引用?
@Bean
public DataSource dataSource() throws Exception {
Context ctx = new InitialContext();
return (DataSource) ctx.lookup("jdbc/TyedArtDB");
}
(taken from this answer: https://stackoverflow.com/a/15440797/258813 ) (摘自此答案: https : //stackoverflow.com/a/15440797/258813 )
And you can move the password encoder like this: 您可以这样移动密码编码器:
@Bean public BCryptPasswordEncoder bCryptPasswordEncoder(){
return new BCryptPasswordEncoder();
}
taken from: http://automateddeveloper.blogspot.co.uk/2014/02/spring-4-xml-to-annotation-configuration.html 摘自: http : //automateddeveloper.blogspot.co.uk/2014/02/spring-4-xml-to-annotation-configuration.html
Here's an example I used to autowire BCryptPasswordEncoder: 这是我用来自动连接BCryptPasswordEncoder的示例:
UserServiceImpl.java UserServiceImpl.java
@Service("userService")
public class UserServiceImpl implements UserService {
@Autowired
BCryptPasswordEncoder bCryptPasswordEncoder;
@Override
public User findUserByEmail(String email) {
return null;
}
}
WebMvcConfig.java WebMvcConfig.java
@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {
@Bean
public BCryptPasswordEncoder passwordEncoder(){
BCryptPasswordEncoder bCryptPasswordEncoder = new BCryptPasswordEncoder();
return bCryptPasswordEncoder;
}
}
If you notice, WebMvcConfig.java has @Bean annotation just before passwordEncoder() method. 如果您注意到,WebMvcConfig.java在passwordEncoder()方法之前具有@Bean批注。 It indicates that a method produces a bean to be managed by the Spring container.
它指示一个方法产生一个由Spring容器管理的bean。
https://docs.spring.io/autorepo/docs/spring/4.2.4.RELEASE/javadoc-api/org/springframework/context/annotation/Bean.html https://docs.spring.io/autorepo/docs/spring/4.2.4.RELEASE/javadoc-api/org/springframework/context/annotation/Bean.html
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