AuthenticationEntryPoint 与 AccessDeineHandler 的用法及区别（转载）

找了大半天的资料终于在国外的网站上找到了，相关问题，不过还好把security的认证流程和授权流程又重新看了遍：

AuthenticationEntryPoint 用来解决匿名用户访问无权限资源时的异常

AccessDeineHandler 用来解决认证过的用户访问无权限资源时的异常

配置类：

@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled=true)
public class MyWebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserDetailsService userDetailsService;
    @Autowired
    private BCryptPasswordEncoder bCryptPasswordEncoder;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.cors()
            .and()
                .csrf().disable()
            .authorizeRequests()
                .antMatchers("/user/sign").permitAll().anyRequest().authenticated()
            .and()
                .addFilter(new JWTLoginFilter(authenticationManager()))
                .addFilter(new JwtAuthenticationFilter(authenticationManager()));
                //添加自定义异常入口，处理accessdeine异常
        http.exceptionHandling().authenticationEntryPoint(new CustomAuthenticationEntryPoint())
        .accessDeniedHandler(new CustomAccessDeineHandler());       
    }

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

之后，自定义AuthenticationEntryPoint的实现类:

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.AuthenticationEntryPoint;

import com.alibaba.fastjson.JSONObject;
import com.panku.common.domain.RestMsg;

public class CustomAuthenticationEntryPoint implements AuthenticationEntryPoint {

    @Override
    public void commence(HttpServletRequest request, HttpServletResponse response,
            AuthenticationException authException) throws IOException, ServletException {
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/javascript;charset=utf-8");
        response.getWriter().print(JSONObject.toJSONString(RestMsg.error("没有访问权限!")));
    }

}

自定义，AccessDeineHandler：

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.web.access.AccessDeniedHandler;

import com.alibaba.fastjson.JSONObject;
import com.panku.common.domain.RestMsg;

public class CustomAccessDeineHandler implements AccessDeniedHandler {

    @Override
    public void handle(HttpServletRequest request, HttpServletResponse response,
            AccessDeniedException accessDeniedException) throws IOException, ServletException {
        response.setCharacterEncoding("utf-8");
        response.setContentType("text/javascript;charset=utf-8");
        response.getWriter().print(JSONObject.toJSONString(RestMsg.error("没有访问权限!")));
    }

}
 

原文：

https://blog.csdn.net/jkjkjkll/article/details/79975975