主要是重写attemptAuthentication方法

导入依赖

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-security</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency>

相关配置和代码

application.properties配置密码

spring.security.user.name=admin
spring.security.user.password=123

创建自定义身份过滤类

写json登录之前先看一下源码，了解一下它是如何表单登录的

在idea连按下shift键，搜索UsernamePasswordAuthenticationFilter类

进入后再按Ctrl+F12可以查看该类的所有方法

进入方法

我们只需要在request.getParameter（）那里重写一下不就可以实现json登陆

重写attemptAuthentication(HttpServletRequestrequest,HttpServletResponseresponse)方法

只需要复制父类的方法，多加一个判断json的方法。就能同时支持key-value形式可json形式的参数了

public class MyAuthenticationFilter extends UsernamePasswordAuthenticationFilter { @Override public Authentication attemptAuthentication(HttpServletRequest request, HttpServletResponse response) throws AuthenticationException { if(!request.getMethod().equals("POST")){ throw new AuthenticationServiceException("Authentication method not supported" + request.getMethod()); } //说明是以json的形式传递参数 if (request.getContentType().equals(MediaType.APPLICATION_JSON_VALUE)) { String username = null; String password = null; //将传入的json数据转换成map再通过get("key")获得 try { Map<String,String> map =new ObjectMapper().readValue(request.getInputStream(), Map.class); username = map.get("username"); password = map.get("password"); } catch (IOException e) { e.printStackTrace(); } if (username == null) { } if (password == null) { } username = username.trim(); UsernamePasswordAuthenticationToken authRequest = new UsernamePasswordAuthenticationToken(username, password); setDetails(request, authRequest); return this.getAuthenticationManager().authenticate(authRequest); } return super.attemptAuthentication(request, response); }}

创建SecurityConfig配置类

注：自定义的过滤类和security原来那个表单登陆过滤设置是分开的

体现在filter.setFilterProcessesUrl（）和loginProcessingUrl

因此表单登陆和json登陆的，successHandler判断也要分开写，

一会下面有效果图也可以印证这一点

@Configurationpublic class SecurityConfig extends WebSecurityConfigurerAdapter { @Override protected void configure(HttpSecurity http) throws Exception { http.authorizeRequests() .anyRequest().authenticated() .and() .formLogin() .loginProcessingUrl("/doLogin") .permitAll() .and() .csrf().disable(); //将自定义的过滤器加进来，第二参数表示加到usernamePasswordAuthenticationFilter所在的位置 http.addFilterAt(myAuthenticationFilter(), UsernamePasswordAuthenticationFilter.class); } @Bean MyAuthenticationFilter myAuthenticationFilter() throws Exception{ MyAuthenticationFilter filter = new MyAuthenticationFilter(); filter.setAuthenticationManager(authenticationManagerBean()); return filter; }}

创建Controller

@RestControllerpublic class HelloController { @GetMapping("/hello") public String hello(){ return "hello security"; }}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。