springboot springsecurity实现图片验证码登录的示例-亚博电竞手机版

这个问题,网上找了好多,结果代码都不全,找了好多,要不是就自动注入的类注入不了,编译报错,要不异常捕获不了浪费好多时间,就觉得,框架不熟就不能随便用,全是坑,气死我了,最后改了两天.终于弄好啦;

问题主要是:

• 返回的验证码不知道在springsecurity的什么地方和存在内存里的比较？我用的方法是前置一个过滤器，插入到表单验证之前。
• 比较之后应该怎么处理,：比较之后要抛出一个继承了authenticationexception的异常
• 其次是捕获验证码错误异常的处理？ 捕获到的异常交给自定义验证失败处理器authenticationfailurehandler处理，这里，用的处理器要和表单验证失败的处理器是同一个处理器，不然会报异常，所以在需要写一个全局的authenticationfailurehandler的实现类，专门用来处理异常。表单验证有成功和失败两个处理器，我们一般直接以匿名内部类形似写。要是加了验证码，就必须使用统一的失败处理器。

效果图

网上大都是直接注入一个authenticationfailurehandler,我当时就不明白这个咋注进去的,我这个一写就报错,注入不进去,后来就想自己new一个哇,可以是可以了，但是还报异常，java.lang.illegalstateexception: cannot call senderror() after the response has been committed，后来想表单验证的时候，失败用的也是这个处理器，就想定义一个全局的处理器，

package com.liruilong.hros.config; import com.fasterxml.jackson.databind.objectmapper; import com.liruilong.hros.exception.validatecodeexception; import com.liruilong.hros.model.respbean; import org.springframework.context.annotation.bean; import org.springframework.security.authentication.*; import org.springframework.security.core.authenticationexception; import org.springframework.security.web.authentication.authenticationfailurehandler; import org.springframework.stereotype.component; import javax.servlet.servletexception; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse; import java.io.ioexception; import java.io.printwriter; /** * @description : * @author: liruilong * @date: 2020/2/11 23:08 */ @component public class myauthenticationfailurehandler implements authenticationfailurehandler { @override public void onauthenticationfailure(httpservletrequest httpservletrequest, httpservletresponse httpservletresponse, authenticationexception e) throws ioexception, servletexception { httpservletresponse.setcontenttype("application/json;charset=utf-8"); printwriter out = httpservletresponse.getwriter(); respbean respbean = respbean.error(e.getmessage()); // 验证码自定义异常的处理 if (e instanceof validatecodeexception){ respbean.setmsg(e.getmessage()); //security内置的异常处理 }else if (e instanceof lockedexception) { respbean.setmsg("账户被锁定请联系管理员!"); } else if (e instanceof credentialsexpiredexception) { respbean.setmsg("密码过期请联系管理员!"); } else if (e instanceof accountexpiredexception) { respbean.setmsg("账户过期请联系管理员!"); } else if (e instanceof disabledexception) { respbean.setmsg("账户被禁用请联系管理员!"); } else if (e instanceof badcredentialsexception) { respbean.setmsg(http://www.cppcns.com"用户名密码输入错误,请重新输入!"); } //将hr转化为sting out.write(new objectmapper().writevalueasstring(respbean)); out.flush(); out.close(); } @bean public myauthenticationfailurehandler getmyauthenticationfailurehandler(){ return new myauthenticationfailurehandler(); } }

流程

1. 请求登录页,将验证码结果存到基于servlet的session里,以json格式返回验证码,
2. 之后前端发送登录请求,springsecurity中处理,自定义一个filter让它继承自onceperrequestfilter，然后重写dofilterinternal方法,在这个方法中实现验证码验证的功能，如果验证码错误就抛出一个继承自authenticationexception的验证吗错误的异常消息写入到响应消息中.
3. 之后返回异常信息交给自定义验证失败处理器处理。

下面以这个顺序书写代码:

依赖大家照着import导一下吧,记得有这两个,验证码需要一个依赖,之后还使用了一个工具依赖包，之后是前端代码

​ com.github.whvcse easy-captcha 1.6.2 org.apache.commons commons-lang3

后端代码:

获取验证码,将结果放到session里

package com.liruilong.hros.controller; import com.liruilong.hros.model.respbean; import org.springframework.web.bind.annotation.getmapping; import org.springframework.web.bind.annotation.restcontroller; import com.wf.captcha.arithmeticcaptcha; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse; import java.util.hashmap; import java.util.map; /** * @description : * @author: liruilong * @date: 2019/12/19 19:58 */ @restcontroller public class logincontroller { @getmapping(value = "/auth/code") public map getcode(httpservletrequest request,httpservletresponse response){ // 算术类型 https://gitee.com/whvse/easycaptcha arithmeticcaptcha captcha = new arithmeticcaptcha(111, 36); // 几位数运算，默认是两位 captcha.setlen(2); // 获取运算的结果 string result = captcha.text(); system.err.println("生成的验证码：" result)www.cppcns.com; // 保存 // 验证码信息 map imgresult = new hashmap(2){{ put("img", captcha.tobase64()); }}; request.getsession().setattribute("yanzhengma",result); return imgresult; } }

定义一个verifycodefilter过滤器

package com.liruilong.hros.filter; import com.liruilong.hros.exception.validatecodeexception; import com.liruilong.hros.config.myauthenticationfailurehandler; import org.apache.commons.lang3.stringutils; import org.springframework.beans.factory.annotation.autowired; import org.springframework.context.annotation.bean; import org.springframework.security.core.authenticationexception; import org.springframework.stereotype.component; import org.springframework.web.filter.onceperrequestfilter; import javax.servlet.filterchain; import javax.servlet.servletexception; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse; import java.io.ioexception; /** * @description : * @author: liruilong * @date: 2020/2/7 19:39 */ @component public class verifycodefilter extends onceperrequestfilter { @bean public verifycodefilter getverifycodefilter() { return new verifycodefilter(); } @autowired myauthenticationfailurehandler myauthenticationfailurehandler; @override protected void dofilterinternal(httpservletrequest request, httpservletresponse response, filterchain filterchain) throws servletexception, ioexception { if (stringutils.equals("/dologin", request.getrequesturi()) && stringutils.equalsignorecase(request.getmethod(), "post")) { // 1. 进行验证码的校验 try { string requestcaptcha = request.getparameter("code"); if (requestcaptcha == null) { throw new validatecodeexception("验证码不存在"); } string code = (string) request.getsession().getattribute("yanzhengma"); if (stringutils.isblank(code)) { throw new validatecodeexception("验证码过期！"); } code = code.equals("0.0") ? "0" : code; logger.info("开始校验验证码，生成的验证码为：" code " ，输入的验证码为：" requestcaptcha); if (!stringutils.equals(code, requestcaptcha)) { throw new validatecodeexception("验证码不匹配"); } } catch (authenticationexception e) { // 2. 捕获步骤1中校验出现异常，交给失败处理类进行进行处理 myauthenticationfailurehandler.onauthenticationfailure(request, response, e); } finally { filterchain.dofilter(request, response); } } else { filterchain.dofilter(request, response); } } }

定义一个自定义异常处理，继承authenticationexception

package com.liruilong.hros.exception; import org.springframework.security.core.authenticationexception; /** * @description : * @author: liruilong * @date: 2020/2/8 7:24 */ public class validatecodeexception extends authenticationexception { public validatecodeexception(string msg) { super(msg); } }

security配置.

在之前的基础上加filter的基础上加了

http.addfilterbefore(verifycodefilter, usernamepasswordauthenticationfilter.class)，验证处理上，验证码和表单验证失败用同一个失败处理器，

package com.liruilong.hros.config; import com.fasterxml.jackson.databind.objectmapper; import com.liruilong.hros.filter.verifycodefilter; import com.liruilong.hros.model.hr; import com.liruilong.hros.model.respbean; import com.liruilong.hros.service.hrservice; import org.springframework.beans.factory.annotation.autowired; import org.springframework.context.annotation.bean; import org.springframework.context.annotation.configuration; import org.springframework.security.authentication.*; import org.springframework.security.config.annotation.objectpostprocessor; 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.core.authentication; import org.springframework.security.core.authenticationexception; import org.springframework.security.crypto.bcrypt.bcryptpasswordencoder; import org.springframework.security.crypto.password.passwordencoder; import org.springframework.security.web.authenticationentrypoint; import org.springframework.security.web.access.intercept.filtersecurityinterceptor; import org.springframework.security.web.authentication.authenticationsuccesshandler; import org.springframework.security.web.authentication.usernamepasswordauthenticationfilter; import org.springframework.security.web.authentication.logout.logoutsuccesshandler; import javax.servlet.servletexception; import javax.servlet.http.httpservletrequest; import javax.servlet.http.httpservletresponse; import java.io.ioexception; import java.io.printwriter; /** * @description : * @author: liruilong * @date: 2019/12/18 19:11 */ @configuration public class securityconfig extends websecurityconfigureradapter { @autowired hrservice hrservice; @autowired customfilterinvocationsecuritymetadatasource customfilterinvocationsecuritymetadatasource; @autowired customurldecisionmanager customurldecisionmanager; @autowired verifycodefilter verifycodefilter ; @autowired myauthenticationfailurehandler myauthenticationfailurehandler; @bean passwordencoder passwordencoder() { return new bcryptpasswordencoder(); } @override protected void configure(authenticationmanagerbuilder auth) throws exception { auth.userdetailsservice(hrservice); } /** * @author liruilong * @description 放行的请求路径 * @date 19:25 2020/2/7 * @param [web] * @return void **/ @override public void configure(websecurity web) throws exception { web.ignoring().antmatchers("/auth/code","/login","/css/**","/js/**", "/index.html", "/img/**", "/fonts/**","/favicon.ico"); } @override protected void configure(httpsecurity http) throws exception { http .addfilterbefore(verifycodefilter, usernamepasswordauthenticationfilter.class) .authorizerequests() //.anyrequest().authenticated() .withobjectpostprocessor(new objectpostprocessor() { @override public o postprocess(o object) { object.setaccessdecisionmanager(customurldecisionmanager); object.setsecuritymetadatasource(customfilterinvocationsecuritymetadatasource); return object; } }) .and().formlogin().usernameparameter("username").passwordparameter("password") .loginprocessing .loginpage("/login") //登录成功回调 .successhandler(new authenticationsuccesshandler() { @override public void onauthenticationsuccess(httpservletrequest httpservletrequest, httpservletresponse httpservletresponse, authentication authentication) throws ioexception, servletexception { httpservletresponse.setcontenttype("application/json;charset=utf-8"); printwriter out = httpservletresponse.getwriter(); hr hr = (hr) authentication.getprincipal(); //密码不回传 hr.setpassword(null); respbean ok = respbean.ok("登录成功！", hr); //将hr转化为sting string s = new objectmapper().writevalueasstring(ok); out.write(s); out.flush(); out.close(); } }) //登失败回调 .failurehandler(myauthenticationfailurehandler) //相关的接口直接返回 .permitall() .and() .logout() //注销登录 // .logoutsuccess .logoutsuccesshandler(new logoutsuccesshandler() { @override public void onlogoutsuccess(httpservletrequest httpservletrequest, httpservletresponse httpservletresponse, authentication authentication) throws ioexception, servletexception { httpservletresponse.setcontenttype("application/json;charset=utf-8"); printwriter out = httpservletresponse.getwriter(); out.write(new objectmapper().writevalueasstring(respbean.ok("注销成功!"))); out.flush(); out.close(); } }) .permhttp://www.cppcns.comitall() .and() .csrf().disable().exceptionhandling() //没有认证时，在这里处理结果，不要重定向 .authenticationentrypoint(new authenticationentrypoint() { @override public void commence(httpservletrequest req, httpservletresponse resp, authenticationexception authexception) throws ioexception, servletexception { resp.setcontenttype("application/json;charset=utf-8"); resp.setstatus(401); printwriter out = resp.getwriter(); respbean respbean = respbean.error("访问失败!"); if (authexception instanceof insufficientauthenticationexception) { respbean.setmsg("请求失败，请联系管理员!"); } out.write(new objectmapper().writevalueasstring(respbean)); out.flush(); out.close(); } }); } }

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