解决java.lang.IllegalArgumentException: There is no PasswordEncoder mapped for the id "null"

使用springboot,权限管理使用spring security,使用内存用户验证,但无响应报错:

java.lang.IllegalArgumentException: There is no PasswordEncoder mapped for the id "null"

解决方法:

这是因为Spring boot 2.0.3引用的security 依赖是 spring security 5.X版本,此版本需要提供一个PasswordEncorder的实例,否则后台汇报错误:

java.lang.IllegalArgumentException: There is no PasswordEncoder mapped for the id "null"

并且页面毫无响应。

因此,需要创建PasswordEncorder的实现类。

MyPasswordEncoder.class:

package com.example.demo;

import org.springframework.security.crypto.password.PasswordEncoder;

/**
 * Created by ASUS on 2018/6/30
 *
 * @Authod Grey Wolf
 */
public class MyPasswordEncoder implements PasswordEncoder {
    @Override
    public String encode(CharSequence charSequence) {
        return charSequence.toString();
    }

    @Override
    public boolean matches(CharSequence charSequence, String s) {
        return s.equals(charSequence.toString());
    }
}
然后在内存用户中添加:

package com.example.demo;

import org.springframework.context.annotation.Configuration;
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.builders.WebSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

/**
 * Created by ASUS on 2018/6/30
 *
 * @Authod Grey Wolf
 */
@Configuration
@EnableWebSecurity
public class SpringSecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        //可以设置内存指定的登录的账号密码,指定角色
        //不加.passwordEncoder(new MyPasswordEncoder())
        //就不是以明文的方式进行匹配,会报错
        auth.inMemoryAuthentication().withUser("admin").password("123456").roles("ADMIN");
        //.passwordEncoder(new MyPasswordEncoder())。
        //这样,页面提交时候,密码以明文的方式进行匹配。
        auth.inMemoryAuthentication().passwordEncoder(new MyPasswordEncoder()).withUser("cxh").password("cxh").roles("ADMIN");
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
       //设置登录,注销,表单登录不用拦截,其他请求要拦截
        http.authorizeRequests().antMatchers("/").permitAll()
                .anyRequest().authenticated()
                .and()
                .logout().permitAll()
                .and()
                .formLogin();
        //关闭默认的csrf认证
        http.csrf().disable();

    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        //设置静态资源不要拦截
        web.ignoring().antMatchers("/js/**","/cs/**","/images/**");
    }
}

最后运行:输入账号密码:。

解决java.lang.IllegalArgumentException: There is no PasswordEncoder mapped for the id

输入账号cxh密码:cxh,验证成功才显示信息:,如果输入admin/123456就会报错,重新跳回到登录页面,因为admin的用户我没用 new MyPasswordEncorder进行明文匹配

解决java.lang.IllegalArgumentException: There is no PasswordEncoder mapped for the id

我的座右铭:不会,我可以学;落后,我可以追赶;跌倒,我可以站起来;我一定行。


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