登录功能
添加一个配置类
@Configuration
public class SecurityConfig extends WebSecurityConfigurerAdapter {
@Resource
UserDetailsService userDetailsService;
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.userDetailsService(userDetailsService).passwordEncoder(password());
}
@Bean
PasswordEncoder password() {
return new BCryptPasswordEncoder();
}
@Override
protected void configure(HttpSecurity http) throws Exception {
http.formLogin() // 表单登录
.and().authorizeRequests()
.anyRequest()//其他请求
.authenticated();//需要认证
//关闭csrf
http.csrf().disable();
}
}
登录的实现类
/**
* SpringSecurity 自动调用该类
* 登录实现类 默认 继承 UserDetailsService
*/
@Service("userDetailsService")
public class UserDetailsServiceImpl implements UserDetailsService {
@Resource
private AdminMapper adminMapper;
@Override
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
QueryWrapper<Admin> wrapper = new QueryWrapper<>();
wrapper.eq("username", username);
Admin admin = adminMapper.selectOne(wrapper);
if (admin == null) {
throw new UsernameNotFoundException("用户名不存在");
}
List<GrantedAuthority> auths = new ArrayList<>();
return new User(admin.getUsername(), new BCryptPasswordEncoder().encode(admin.getPassword()), auths);
}
}
自定义登录页面
只需要修改一下配置类
@Override
protected void configure(HttpSecurity http) throws Exception {
http.formLogin() // 表单登录
.loginPage("/login") //配置登录页面 引入了thymeleaf
.loginProcessingUrl("/user/login")//设置哪个是登录的url
.permitAll()
.and().authorizeRequests()
.anyRequest()//其他请求
.authenticated();//需要认证
//关闭csrf
http.csrf().disable();
}
自定义认证成功或失败状态码
如果你想要在认证成功或者失败后拿到你自己定义的状态码，那你可以参考以下步骤
主要是下面的两个处理器
/**
* 用户认证失败处理类
*/
@Component("userLoginAuthenticationFailureHandler")
public class UserLoginAuthenticationFailureHandler extends SimpleUrlAuthenticationFailureHandler {
@Override
public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response,
AuthenticationException exception) throws IOException, ServletException {
System.out.println("===" + exception.getMessage());
JsonData jsonData = null;
jsonData = new JsonData(403,"用户名或密码错误");
String json = new Gson().toJson(jsonData);//包装成Json 发送的前台
System.out.println(json);
response.setContentType("application/json;charset=utf-8");
PrintWriter out = response.getWriter();
out.write(json);
out.flush();
out.close();
}
}
/**
* 用户认证成功处理类
*/
@Component("userLoginAuthenticationSuccessHandler")
public class UserLoginAuthenticationSuccessHandler extends SimpleUrlAuthenticationSuccessHandler {
@Override
public void onAuthenticationSuccess(HttpServletRequest request, HttpServletResponse response, Authentication authentication) throws IOException, ServletException {
JsonData jsonData = new JsonData(200,"认证OK");
String json = new Gson().toJson(jsonData);
response.setContentType("application/json;charset=utf-8");
PrintWriter out = response.getWriter();
out.write(json);
out.flush();
out.close();
}
}
在配置类中添加自己写的两个处理类
注入自己写的两个处理器
@Resource
private UserLoginAuthenticationFailureHandler userLoginAuthenticationFailureHandler;//验证失败的处理类
@Resource
private UserLoginAuthenticationSuccessHandler userLoginAuthenticationSuccessHandler;//验证成功的处理类
配置上两个处理类
@Override
protected void configure(HttpSecurity http) throws Exception {
http.formLogin() // 表单登录
.loginPage("/login") //配置登录页面 引入了thymeleaf
.loginProcessingUrl("/user/login")//设置哪个是登录的url
.failureHandler(userLoginAuthenticationFailureHandler)//验证失败处理
.successHandler(userLoginAuthenticationSuccessHandler)//验证成功处理
.permitAll()
.and().authorizeRequests()
.anyRequest()//其他请求
.authenticated();//需要认证
//关闭csrf
http.csrf().disable();
}
此时的登录页面
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>登录</title>
</head>
<body>
<section>
<span>用户名：<input type="text" id="username" name="username"/> <br/> </span>
<span>用户密码：<input type="password" id="password" name="password"/> <br/> </span>
<button onclick="login()">登录</button>
</section>
<script type="text/javascript" src="../static/js/jquery.js" th:src="@{/js/jquery.js}"></script>
<script>
function login(){
let username = document.getElementById("username");
let password = document.getElementById("password");
let username_and_password = {
username:username.value,
password:password.value
}
$.ajax({
type:"Post",
url:"/user/login",
data:username_and_password,
success:function (data) {
console.log(data)
console.log(data.code)
console.log(data.msg)
if (data.code == 200){ //拿到自己定义的状态码进行跳转
alert(data.msg)
// window.location.href = "/hello";
// console.log("hehe")
}else if (data.code == 403){
alert(data.msg)
} else {
alert("客户端出错")
}
}
})
}
</script>
</body>
</html>
写一个注解
标注该注解的方法或类，直接放行。
/**
* 声明不用拦截的接口
**/
@Target({ElementType.TYPE, ElementType.METHOD}) //该注解可以用在类上或者方法上
@Retention(RetentionPolicy.RUNTIME)
public @interface NoAuthentication {
}
配置类中主要是以下这个方法
//设置哪些不需要认证
@Override
public void configure(WebSecurity web) throws Exception {
//静态资源放行，我就随便写写，根据自己静态资源结构去写。
String[] urls = new String[]{
"/js/**",
"/imgs/**",
"/css/**"
};
ApplicationContext applicationContext = ApplicationContextHelper.getApplicationContext();
List<String> whiteList = new ArrayList<>();
for (String url : urls) {
whiteList.add(url);
}
RequestMappingHandlerMapping requestMappingHandlerMapping = applicationContext.getBean(RequestMappingHandlerMapping.class);
// 获取url与类和方法的对应信息
Map<RequestMappingInfo, HandlerMethod> map = requestMappingHandlerMapping.getHandlerMethods();
for (Map.Entry<RequestMappingInfo, HandlerMethod> requestMappingInfoHandlerMethodEntry : map.entrySet()) {
RequestMappingInfo key = requestMappingInfoHandlerMethodEntry.getKey();
HandlerMethod value = requestMappingInfoHandlerMethodEntry.getValue();
Set<String> patterns = key.getPatternsCondition().getPatterns();
//无需权限都可以访问的类型
NoAuthentication noAuthentication = value.getBeanType().getAnnotation(NoAuthentication.class);
if (null != noAuthentication) {//整个controller不需要权限访问的
RequestMapping annotation = value.getBeanType().getAnnotation(RequestMapping.class);
if (null != annotation) {
String path = annotation.value()[0];
String suffix = "**";
if (path.lastIndexOf("/") != path.length() - 1)
suffix = "/**";
String s = path + suffix;
if (!whiteList.contains(s)) {
whiteList.add(s);
}
}
} else {//方法不需要权限访问的
NoAuthentication annotation = value.getMethod().getAnnotation(NoAuthentication.class);
if (null != annotation) {
patterns.forEach(p -> {
if (!whiteList.contains(p)) {
whiteList.add(p);
}
});
}
}
}
System.out.println("-----");
for (String s : whiteList) {
System.out.println(s);
}
urls = whiteList.toArray(urls);
super.configure(web);
web.httpFirewall(defaultHttpFirewall());
web.ignoring().antMatchers(urls);
}
/**
* 允许出现双斜杠的URL
*
* @return
*/
@Bean
public HttpFirewall defaultHttpFirewall() {
return new DefaultHttpFirewall();
}
测试：把注解放在某个方法或者某个类上面，可以发现不用登陆也能直接进行接口的访问
作用：如果你有一些接口是不需要认证的，比如说你去淘宝逛东西，你只是看看的话，要是让你登陆的话就有些不合理了，这时你就可以在类似需求的类上加上该注解，就能实现不用登陆也能访问。
欢迎
源码：https://github.com/zhi-ac/security_demo
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