Spring Security中successHandler和failureHandler使用

前言

successHandler和failureHandler是Spring Security中两个较为强大的用来处理登录成功和失败的回调函数，通过它们两个我们就可以自定义一些前后端数据的交互。

successHandler

该方法有三个参数

req：相当与HttpServletRequest
res：相当与HttpServletRespose
authentication：这里保存了我们登录后的用户信息

进行如下配置

.successHandler((req, resp, authentication) -> {
                    Object principal = authentication.getPrincipal();
                    resp.setContentType("application/json;charset=utf-8");
                    PrintWriter out = resp.getWriter();
                    out.write(new ObjectMapper().writeValueAsString(principal));
                    out.flush();
                    out.close();
                })

配置类代码

package com.scexample.sc.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
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.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;

import java.io.PrintWriter;

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {


    @Bean
    PasswordEncoder passwordEncoder(){
        return NoOpPasswordEncoder.getInstance();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .withUser("xiaoming")
                .password("123456").roles("admin");

    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/js/**","/css/**","/images/**");  //这个是用来忽略一些url地址，对其不进行校验，通常用在一些静态文件中。
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .loginPage("/aaa.html")
                 .loginProcessingUrl("/logintest")
                .usernameParameter("name")
                .passwordParameter("passwd")
                .successHandler((req, res, authentication) -> {
                    Object principal = authentication.getPrincipal();
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write(new ObjectMapper().writeValueAsString(principal));
                    out.flush();
                    out.close();
                })
                .permitAll()
                .and()
                .csrf().disable()
        );
    }
}

再次登录后

failureHandler

该方法有三个参数

req：相当与HttpServletRequest
res：相当与HttpServletRespose
e：这里保存了我们登录失败的原因

异常种类：

LockedException 账户锁定
CredentialsExpiredException 密码过期
AccountExpiredException 账户过期
DisabledException 账户被禁止
BadCredentialsException 用户名或者密码错误

.failureHandler((req, res, e) -> {
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write(e.getMessage());
                    out.flush();
                    out.close();
                })

配置类代码：

package com.scexample.sc.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
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.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;

import java.io.PrintWriter;

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {


    @Bean
    PasswordEncoder passwordEncoder(){
        return NoOpPasswordEncoder.getInstance();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .withUser("xiaoming")
                .password("123456").roles("admin");

    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/js/**","/css/**","/images/**");  //这个是用来忽略一些url地址，对其不进行校验，通常用在一些静态文件中。
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .loginPage("/aaa.html")
                 .loginProcessingUrl("/logintest")
                .usernameParameter("name")
                .passwordParameter("passwd")
                .successHandler((req, res, authentication) -> {
                    Object principal = authentication.getPrincipal();
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write(new ObjectMapper().writeValueAsString(principal));
                    out.flush();
                    out.close();
                })
                .failureHandler((req, res, e) -> {
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write(e.getMessage());
                    out.flush();
                    out.close();
                })           
                .permitAll()
                .and()
                .csrf().disable()          
    }
}

未认证处理方法

spring security默认情况下，如果认证不成功，直接重定向到登录页面。
但是项目中，我们有的时候不需要这样，我们需要在前端进行判断 ，然后再决定进行其他的处理，那我们就可以用authenticationEntryPoint这个接口进行自定义了，取消它的默认重定向行为。

该方法有三个参数

req：相当与HttpServletRequest
res：相当与HttpServletRespose
authException：指的就是我们未认证的exception

 				.csrf().disable()
                .exceptionHandling()
                .authenticationEntryPoint((req, res, authException) -> {
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write("检测到未登录状态，请先登录");
                    out.flush();
                    out.close();
                }

配置类代码

package com.scexample.sc.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
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.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;

import java.io.PrintWriter;

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {


    @Bean
    PasswordEncoder passwordEncoder(){
        return NoOpPasswordEncoder.getInstance();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .withUser("xiaoming")
                .password("123456").roles("admin");

    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/js/**","/css/**","/images/**");  //这个是用来忽略一些url地址，对其不进行校验，通常用在一些静态文件中。
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .loginPage("/aaa.html")
                 .loginProcessingUrl("/logintest")
                .usernameParameter("name")
                .passwordParameter("passwd")
                .successHandler((req, res, authentication) -> {
                    Object principal = authentication.getPrincipal();
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write(new ObjectMapper().writeValueAsString(principal));
                    out.flush();
                    out.close();
                })
                .failureHandler((req, res, e) -> {
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write(e.getMessage());
                    out.flush();
                    out.close();
                })           
                .permitAll()
                .and()
                .csrf().disable()
                .exceptionHandling()
                .authenticationEntryPoint((req, res, authException) -> {
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write("检测到未登录状态，请先登录");
                    out.flush();
                    out.close();
                }
               );          
    }
}

注销登录

				   .logoutSuccessHandler((req, res, authentication) -> {
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write("注销成功");
                    out.flush();
                    out.close();
                })

配置类代码：

package com.scexample.sc.config;

import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.context.annotation.Bean;
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.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.password.NoOpPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;

import java.io.PrintWriter;

@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {


    @Bean
    PasswordEncoder passwordEncoder(){
        return NoOpPasswordEncoder.getInstance();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .withUser("xiaoming")
                .password("123456").roles("admin");

    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.ignoring().antMatchers("/js/**","/css/**","/images/**");  //这个是用来忽略一些url地址，对其不进行校验，通常用在一些静态文件中。
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .anyRequest().authenticated()
                .and()
                .formLogin()
                .loginPage("/aaa.html")
                 .loginProcessingUrl("/logintest")
                .usernameParameter("name")
                .passwordParameter("passwd")
                .successHandler((req, res, authentication) -> {
                    Object principal = authentication.getPrincipal();
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write(new ObjectMapper().writeValueAsString(principal));
                    out.flush();
                    out.close();
                })
                .failureHandler((req, res, e) -> {
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write(e.getMessage());
                    out.flush();
                    out.close();
                })           
                .permitAll()
                .and()
                .logout()
                .logoutUrl("/logout")
                .logoutSuccessHandler((req, res, authentication) -> {
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write("注销成功");
                    out.flush();
                    out.close();
                })
                .permitAll()
                .and()
                .csrf().disable()
                .exceptionHandling()
                .authenticationEntryPoint((req, res, authException) -> {
                    res.setContentType("application/json;charset=utf-8");
                    PrintWriter out = res.getWriter();
                    out.write("检测到未登录状态，请先登录");
                    out.flush();
                    out.close();
                }
               );          
    }
}