我們查看源碼
從默認(rèn)的退出api入口,
http.logout();
進(jìn)入logout方法,
public LogoutConfigurer<HttpSecurity> logout() throws Exception {
return getOrApply(new LogoutConfigurer<HttpSecurity>());
}
我們查看LogoutConfigurer類,默認(rèn)的退出的url地址是/logout,默認(rèn)的退出成功跳轉(zhuǎn)的url地址是/login?logout
public final class LogoutConfigurer<H extends HttpSecurityBuilder<H>> extends
AbstractHttpConfigurer<LogoutConfigurer<H>, H> {
private List<LogoutHandler> logoutHandlers = new ArrayList<LogoutHandler>();
private SecurityContextLogoutHandler contextLogoutHandler = new SecurityContextLogoutHandler();
//默認(rèn)的退出成功跳轉(zhuǎn)的url地址是/login?logout
private String logoutSuccessUrl = "/login?logout";
private LogoutSuccessHandler logoutSuccessHandler;
//默認(rèn)的退出的url地址是/logout
private String logoutUrl = "/logout";
private RequestMatcher logoutRequestMatcher;
private boolean permitAll;
private boolean customLogoutSuccess;
private LinkedHashMap<RequestMatcher, LogoutSuccessHandler> defaultLogoutSuccessHandlerMappings =
new LinkedHashMap<RequestMatcher, LogoutSuccessHandler>();
/**
* Creates a new instance
* @see HttpSecurity#logout()
*/
public LogoutConfigurer() {
}
...
再往下看,LogoutConfigurer類的getLogoutRequestMatcher()方法,
@SuppressWarnings("unchecked")
private RequestMatcher getLogoutRequestMatcher(H http) {
if (logoutRequestMatcher != null) {
return logoutRequestMatcher;
}
if (http.getConfigurer(CsrfConfigurer.class) != null) {
this.logoutRequestMatcher = new AntPathRequestMatcher(this.logoutUrl, "POST");
}
else {
this.logoutRequestMatcher = new OrRequestMatcher(
new AntPathRequestMatcher(this.logoutUrl, "GET"),
new AntPathRequestMatcher(this.logoutUrl, "POST"),
new AntPathRequestMatcher(this.logoutUrl, "PUT"),
new AntPathRequestMatcher(this.logoutUrl, "DELETE")
);
}
return this.logoutRequestMatcher;
}
如果是啟用了csrf模式,退出是使用的post類型,如果沒(méi)有啟動(dòng)csrf那么啟動(dòng)的是else中的邏輯。
不使用csrf模式,在登錄和退出的時(shí)候,post請(qǐng)求必須要有token,在login.jsp和logout.jsp中定義如下就是為了設(shè)置token。
<input type="hidden" name="${ _csrf.parameterName}" value="${ _csrf.token}" />
spring secuity默認(rèn)的退出
上面大概看了一下默認(rèn)的退出源碼,我們先使用spring secuity默認(rèn)的退出,
- 配置類
我們禁用了csrf模式,配置了默認(rèn)的http.logout();
@Configuration
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication().withUser("zhangsan").password("123456").roles("GUEST");
auth.inMemoryAuthentication().withUser("zhihao.miao").password("123456").roles("USER");
auth.inMemoryAuthentication().withUser("lisi").password("12345678").roles("USER", "ADMIN");
}
protected void configure(HttpSecurity http) throws Exception {
//禁用csrf模式
http.csrf().disable();
http.authorizeRequests().antMatchers("/hello").hasRole("GUEST");
http.authorizeRequests().antMatchers("/home").hasRole("USER");
http.authorizeRequests().antMatchers("/admin").hasRole("ADMIN");
//登錄的跳轉(zhuǎn)頁(yè)面,和登錄的動(dòng)作url不應(yīng)該有權(quán)限認(rèn)證。
http.authorizeRequests().antMatchers("/sys/login").permitAll();
//配置登出頁(yè)面的跳轉(zhuǎn)url地址也有權(quán)限訪問(wèn),不去跳轉(zhuǎn)到登錄頁(yè)面
http.authorizeRequests().antMatchers("/sys/logout").permitAll();
http.authorizeRequests().antMatchers("/**/*.html").permitAll();
http.authorizeRequests().antMatchers("/**/*.css").permitAll();
http.authorizeRequests().antMatchers("/**/*.js").permitAll();
http.authorizeRequests().antMatchers("/**/*.png").access("permitAll");
http.authorizeRequests().anyRequest().authenticated();
http.formLogin().
loginPage("/sys/login").
loginProcessingUrl("/doLogin").
failureForwardUrl("/sys/loginFail"). //使用forward的方式,能拿到具體失敗的原因,并且會(huì)將錯(cuò)誤信息以SPRING_SECURITY_LAST_EXCEPTION的key的形式將AuthenticationException對(duì)象保存到request域中
defaultSuccessUrl("/public/login/ok.html"). //如果直接訪問(wèn)登錄頁(yè)面,則登錄成功后重定向到這個(gè)頁(yè)面,否則跳轉(zhuǎn)到之前想要訪問(wèn)的頁(yè)面
permitAll();
//logout默認(rèn)的url是 /logout,如果csrf啟用,則請(qǐng)求方式是POST,否則請(qǐng)求方式是GET、POST、PUT、DELETE
http.logout();
}
}
- 定義controller
我們?cè)L問(wèn)這個(gè)/sys/logout的url地址的時(shí)候,跳轉(zhuǎn)到退出頁(yè)面
@GetMapping("/sys/logout")
public String logout(){
return "/jsp/logout";
}
- 定義退出頁(yè)面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
</head>
<body>
<a href="/logout">GET logout</a>
<br />
<form action="/logout" method="post">
<input type="hidden" name="${ _csrf.parameterName}" value="${ _csrf.token}" />
<input type="submit" value="POST Logout"/>
</form>
</body>
</html>
- 啟動(dòng)服務(wù),測(cè)試一下
訪問(wèn)http://localhost:8001/hello,跳轉(zhuǎn)到登錄頁(yè)面http://localhost:8001/sys/login,輸入正確的用戶名密碼之后跳轉(zhuǎn)到http://localhost:8001/hello,我們想退出,訪問(wèn)http://localhost:8001/sys/logout,跳轉(zhuǎn)到我們定義的退出頁(yè)面,因?yàn)槲覀兘昧薱srf模式,所以退出的請(qǐng)求方式是GET、POST、PUT、DELETE

我們打開(kāi)另外一個(gè)標(biāo)簽欄,點(diǎn)擊get請(qǐng)求,退出成功跳轉(zhuǎn)到登錄頁(yè)面,我們?cè)偃ブ暗臉?biāo)簽欄刷新http://localhost:8001/hello請(qǐng)求,發(fā)現(xiàn)又跳轉(zhuǎn)到登錄頁(yè)面http://localhost:8001/sys/login。
自定義退出
默認(rèn)的推出url是/logout。我們這邊定制的url及一些handler
- 配置類如下:
我們定義了退出url,以及退出url的請(qǐng)求類型是get,定義了三個(gè)退出handler,定義了一個(gè)退出成功的handler
@Configuration
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.inMemoryAuthentication().withUser("zhangsan").password("123456").roles("GUEST");
auth.inMemoryAuthentication().withUser("zhihao.miao").password("123456").roles("USER");
auth.inMemoryAuthentication().withUser("lisi").password("12345678").roles("USER", "ADMIN");
}
protected void configure(HttpSecurity http) throws Exception {
//禁用csrf模式
http.csrf().disable();
http.authorizeRequests().antMatchers("/hello").hasRole("GUEST");
http.authorizeRequests().antMatchers("/home").hasRole("USER");
http.authorizeRequests().antMatchers("/admin").hasRole("ADMIN");
//登錄的跳轉(zhuǎn)頁(yè)面,和登錄的動(dòng)作url不應(yīng)該有權(quán)限認(rèn)證。
http.authorizeRequests().antMatchers("/sys/login").permitAll();
//配置登出頁(yè)面的跳轉(zhuǎn)url地址也有權(quán)限訪問(wèn),不去跳轉(zhuǎn)到登錄頁(yè)面
http.authorizeRequests().antMatchers("/sys/logout").permitAll();
http.authorizeRequests().antMatchers("/**/*.html").permitAll();
http.authorizeRequests().antMatchers("/**/*.css").permitAll();
http.authorizeRequests().antMatchers("/**/*.js").permitAll();
http.authorizeRequests().antMatchers("/**/*.png").access("permitAll");
http.authorizeRequests().anyRequest().authenticated();
http.formLogin().
loginPage("/sys/login").
loginProcessingUrl("/doLogin").
failureForwardUrl("/sys/loginFail"). //使用forward的方式,能拿到具體失敗的原因,并且會(huì)將錯(cuò)誤信息以SPRING_SECURITY_LAST_EXCEPTION的key的形式將AuthenticationException對(duì)象保存到request域中
defaultSuccessUrl("/public/login/ok.html"). //如果直接訪問(wèn)登錄頁(yè)面,則登錄成功后重定向到這個(gè)頁(yè)面,否則跳轉(zhuǎn)到之前想要訪問(wèn)的頁(yè)面
permitAll();
//定制退出
http.logout()
//.logoutUrl("/sys/doLogout") //只支持定制退出url
//支持定制退出url以及httpmethod
.logoutRequestMatcher(new AntPathRequestMatcher("/sys/doLogout", "GET"))
.addLogoutHandler((request,response,authentication) -> System.out.println("=====1====="))
.addLogoutHandler((request,response,authentication) -> System.out.println("=====2======"))
.addLogoutHandler((request,response,authentication) -> System.out.println("=====3======"))
.logoutSuccessHandler(((request, response, authentication) -> {
System.out.println("=====4=======");
response.sendRedirect("/html/logoutsuccess1.html");
}))
//.logoutSuccessUrl("/html/logoutsuccess2.html") //成功退出的時(shí)候跳轉(zhuǎn)的頁(yè)面
//.deleteCookies() //底層也是使用Handler實(shí)現(xiàn)的額
//清除認(rèn)證信息
.clearAuthentication(true)
.invalidateHttpSession(true)
; //使session失效
}
}
- 修改登出頁(yè)面
修改get請(qǐng)求的鏈接地址是我們新配置的退出url。
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
</head>
<body>
<a href="/sys/doLogout">GET logout</a>
<br />
<form action="/logout" method="post">
<input type="hidden" name="${ _csrf.parameterName}" value="${ _csrf.token}" />
<input type="submit" value="POST Logout"/>
</form>
</body>
</html>
- 定義自己的退出成功頁(yè)面
logoutsuccess1.html頁(yè)面的內(nèi)容如下:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
logout1 success
</body>
</html>
- 啟動(dòng)服務(wù),測(cè)試一下
訪問(wèn)http://localhost:8001/hello,跳轉(zhuǎn)到登錄頁(yè)面http://localhost:8001/sys/login,輸入正確的用戶名密碼之后跳轉(zhuǎn)到http://localhost:8001/hello,我們想退出,訪問(wèn)http://localhost:8001/sys/logout,跳轉(zhuǎn)到我們定義的退出頁(yè)面

我們打開(kāi)另外一個(gè)標(biāo)簽欄,點(diǎn)擊get請(qǐng)求,退出成功跳轉(zhuǎn)到登錄頁(yè)面,我們?cè)偃ブ暗臉?biāo)簽欄刷新
http://localhost:8001/hello請(qǐng)求,發(fā)現(xiàn)又跳轉(zhuǎn)到登錄頁(yè)面http://localhost:8001/sys/login。
控制臺(tái)打印:
[INFO] Session id node02vrs7ek2u7dfhgwg8q9azjxv0 swapped for new id node011kk0zpcbnr3p14se8mkozjue21
=====1=====
=====2======
=====3======
[INFO] Session node011kk0zpcbnr3p14se8mkozjue21 already being invalidated
=====4=======