ajax登录退出

使用ajax实现登录退出那么就不要配置登录成功或者失败的url地址等等，只要使用successHandler或者failHandler配置处理器即可。

示列

  • 加入maven依赖
<dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>4.3.13.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-web</artifactId>
            <version>4.2.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-config</artifactId>
            <version>4.2.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.2</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.8.0</version>
        </dependency>
    </dependencies>


    <build>
        <finalName>secuity-ajax-login-out</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.eclipse.jetty</groupId>
                <artifactId>jetty-maven-plugin</artifactId>
                <version>9.4.3.v20170317</version>
                <configuration>
                    <httpConnector>
                        <port>8001</port>
                    </httpConnector>
                    <webApp>
                        <contextPath>/</contextPath>
                    </webApp>
                </configuration>
            </plugin>
        </plugins>
    </build>
  • 实体类

因为我使用ajax登录退出，所以我登录退出成功失败都是分别返回一个LoginResp实体和LogoutResp实体，实体定义如下：

LoginResp

public class LoginResp {
    private Integer code;
    private String msg;
    public Integer getCode() {
        return code;
    }
    public void setCode(Integer code) {
        this.code = code;
    }
    public String getMsg() {
        return msg;
    }
    public void setMsg(String msg) {
        this.msg = msg;
    }

    public LoginResp(){}

    public LoginResp(Integer code, String msg) {
        this.code = code;
        this.msg = msg;
    }
}

LogoutResp

public class LogoutResp extends LoginResp {

}
  • 定义系统启动类
public class WebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    //系统启动的时候的根类
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class<?>[]{WebAppConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return null;
    }

    //设置成/*表示拦截静态的文件
    @Override
    protected String[] getServletMappings() {
        return new String[]{"/"};
    }

}
  • web入口
/**
 * 入口类，启动spring mvc，启动spring secuity
 */
@EnableWebMvc
@EnableWebSecurity
@ComponentScan("com.zhihao.miao.secuity")
public class WebAppConfig extends WebMvcConfigurerAdapter {
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
        configurer.enable();
    }

     //配置视图解析器
    public void configureViewResolvers(ViewResolverRegistry registry) {
        registry.jsp();
    }
}
  • spring security配置类
/**
 * 初始化spring security
 */
public class WebAppSecurityInitializer extends AbstractSecurityWebApplicationInitializer {

    protected String getDispatcherWebApplicationContextSuffix() {
        return AbstractDispatcherServletInitializer.DEFAULT_SERVLET_NAME;
    }
}
  • 具体的controller

HelloController：

@RestController
public class HelloController {

    @GetMapping("/hello")
    public String hello(){
        return "hello spring secuity";
    }

    @GetMapping("/home")
    public String home(){
        return "home spring security";
    }

    @GetMapping("/admin")
    public String admin(){
        return "admin spring secuity";
    }
}

LoginController：

@Controller
public class LoginController {

    @GetMapping("/sys/login")
    public String login(){
        return "/jsp/login";
    }


    @GetMapping("/sys/logout")
    public String logout(){
        return "/jsp/logout";
    }



    @PostMapping("/sys/loginFail")
    public String fail(HttpServletRequest req){
        AuthenticationException exp = (AuthenticationException)req.getAttribute(WebAttributes.AUTHENTICATION_EXCEPTION);
        if(exp instanceof BadCredentialsException){
            req.setAttribute("error_msg", "用户名或密码错误");
        } else if(exp instanceof AccountExpiredException){
            req.setAttribute("error_msg", "账户过期");
        } else if(exp instanceof LockedException){
            req.setAttribute("error_msg", "账户已被锁");
        }else{
            //其他错误打印这些信息
            System.out.println(exp.getMessage());
        }
        return "/jsp/login";
    }
}
  • 权限相关配置类

登录成功失败后返回一个LoginResp对象的JSON类型到页面上，退出成功失败后返回一个LogoutResp对象的JSON类型到页面上，

@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 {

        http.authorizeRequests().antMatchers("/hello").hasRole("GUEST");
        http.authorizeRequests().antMatchers("/home").hasRole("USER");
        http.authorizeRequests().antMatchers("/admin").hasRole("ADMIN");

        //登录的跳转页面，和登录的动作url不应该有权限认证。
        http.authorizeRequests().antMatchers("/sys/login").permitAll();
        //配置登出页面的跳转url地址也有权限访问，不去跳转到登录页面
        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("/sys/doLogin")  //登录的按钮执行的动作
                .successHandler((req, resp, auth) -> {
                    LoginResp lr = new LoginResp(1, "用户登陆成功");
                    String json = new Gson().toJson(lr);

                    resp.setContentType("application/json");
                    resp.getWriter().write(json);
                })
                .failureHandler((req, resp, excp) -> {
                    LoginResp lr = new LoginResp();
                    lr.setCode(0);

                    if(excp instanceof BadCredentialsException){
                        lr.setMsg("用户名或密码错误");
                    } else if(excp instanceof AccountExpiredException){
                        lr.setMsg("账户过期");
                    } else if(excp instanceof LockedException){
                        lr.setMsg("账户已被锁");
                    } else {
                        lr.setMsg("用户登陆失败");
                    }

                    String json = new Gson().toJson(lr);

                    resp.setContentType("application/json");
                    resp.getWriter().write(json);
                })
                .permitAll();

        http.logout()
                .logoutRequestMatcher(new AntPathRequestMatcher("/sys/doLogout", "GET")) //支持定制退出url以及httpmethod
                .logoutSuccessHandler((req, resp, auth) -> {
                    LogoutResp lr = new LogoutResp();
                    lr.setCode(1);
                    lr.setMsg("用户退出成功");
                    String json = new Gson().toJson(lr);

                    resp.setContentType("application/json");
                    resp.getWriter().write(json);
                })
                .clearAuthentication(true)
                .invalidateHttpSession(true);
    }
}
  • 登录页面login.jsp 
<div class="login">
    <h1>Login</h1>
    <form method="post" action="/doLogin">
        <input type="hidden" name="${ _csrf.parameterName}" value="${ _csrf.token}" />
        <input type="text" name="username" placeholder="用户名" />
        <input type="password" name="password" placeholder="密码"/>
        <button type="button" onclick="doLogin()" class="btn btn-primary btn-block btn-large">登录</button>
    </form>
    <div class="login-bottom" style="color:red;">${error_msg}</div>
</div>

<div style="text-align:center;">
</div>

</body>

<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
    function doLogin(){
        var _csrf = $('input[name=_csrf]').val();
        var username = $('input[name=username]').val();
        var password = $('input[name=password]').val();
        var data = {_csrf:_csrf,username:username,password:password};
        //登录提交的url，在WebSecurityConfig配置类中配置了，登录成功之后跳转到/html/show.html页面，此页面也是登出页面
        $.post('/sys/doLogin', data, function(resp){
            if(resp.code == 1){
                alert('登陆成功');
                window.location.href = "/html/show.html";
            } else {
                alert(resp.msg);
            }
        });
    }
</script>
  • 登出页面show.html 
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
</head>
<body>
<h1>登陆成功</h1>
<hr />
<a href="#" onclick="doLogout()">logout</a>
</body>
<script type="text/javascript" src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript">
    function doLogout(){
        var data = {};
        //配置的登出的url，
        $.get('/sys/doLogout', data, function(resp){
            if(resp.code == 1){
                alert('退出成功');
                window.location.href = "/hello";
            } else {
                alert(resp.msg);
            }
        });
    }
</script>
</html>
  • 启动服务，测试一下

访问http://localhost:8001/hello，跳转到登录页面http://localhost:8001/sys/login，输入正确的用户名密码之后页面弹出登陆成功，点击确认之后跳转到http://localhost:8001/html/show.html（也就是我们的退出页面）

验证用户名密码成功之后，页面弹出登录成功
登录成功之后点击确认跳转的接口，点击logout退出，

退出成功之后页面弹出退出成功，点击确认之后跳转到登录页面


退出成功之后页面弹出退出成功，点击确认之后跳转到登录页面

参考代码

secuity-ajax-login-out

参考资料

官方文档
Spring Security 从入门到进阶系列教程

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