字段 authenticationManager LoginController 需要一个类型为AuthenticationManager'的bean，但无法找到。

Question

当我试图用spring security设置SecurityConfigurer时，得到这个错误。

APPLICATION FAILED TO START

Description:

Field authenticationManager in com.springvuegradle.Controller.LoginController required a bean of type 'org.springframework.security.authentication.AuthenticationManager' that could not be found.

The injection point has the following annotations:
        - @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean of type 'org.springframework.security.authentication.AuthenticationManager' in your configuration.

我已经按照其他答案的建议覆盖了 authenticationManagerBean，但这并没有帮助。欢迎任何建议。我的SecurityConfigurer类如下。

package com.springvuegradle.Security;

import com.springvuegradle.Services.MyUserDetailsService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

public class SecurityConfigurer extends WebSecurityConfigurerAdapter {

    @Autowired
    private MyUserDetailsService myUserDetailsService;

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(myUserDetailsService);
    }

    /***
     * Requires authentication for all endpoints except the /authenticate endpoint.
     */
    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests().antMatchers("/authenticate").permitAll().anyRequest().authenticated();
    }

    @Override
    @Bean
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Bean
    public PasswordEncoder passwordEncoder(){
        //TODO change this to actually hash the password
        return NoOpPasswordEncoder.getInstance();
    }
}

登录控制器

@RestController
public class LoginController {

    @Autowired
    private AuthenticationManager authenticationManager;

Answer 1

从代码来看，你似乎是想在LoginController中自动连接SecurityConfigurer。但是在spring security中，不需要自动加载configurer类。另外，正如你所提到的，覆盖 authenticationManagerBean只会提供给你一个AuthenticationManager类型的bean，而不是SecurityConfigurer类型。