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136 lines
4.6 KiB
Markdown
136 lines
4.6 KiB
Markdown
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# SSO整合-前后端分离架构下的整合方案
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---
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如果我们已有的系统是前后端分离模式，我们显然不能为了接入SSO而改造系统的基础架构，官方仓库的示例采用的是前后端一体方案，要将其改造为前后台分离架构模式非常简单
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以`sa-token-demo-sso2-client`为例：
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### 1、新建`H5Controller`开放接口
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``` java
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/**
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* 前后台分离架构下集成SSO所需的代码
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*/
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@RestController
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public class H5Controller {
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// 当前是否登录
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@RequestMapping("/isLogin")
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public Object isLogin() {
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return SaResult.data(StpUtil.isLogin());
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}
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// 返回SSO认证中心登录地址
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@RequestMapping("/getSsoAuthUrl")
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public SaResult getSsoAuthUrl(String clientLoginUrl) {
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String serverAuthUrl = SaSsoUtil.buildServerAuthUrl(clientLoginUrl, "");
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return SaResult.data(serverAuthUrl);
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}
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// 根据ticket进行登录
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@RequestMapping("/doLoginByTicket")
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public SaResult doLoginByTicket(String ticket) {
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Object loginId = checkTicket(ticket);
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if(loginId != null) {
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StpUtil.login(loginId);
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return SaResult.data(StpUtil.getTokenValue());
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}
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return SaResult.error("无效ticket：" + ticket);
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}
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// 校验 Ticket码，获取账号Id
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private Object checkTicket(String ticket) {
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return SaSsoUtil.checkTicket(ticket);
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}
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// 全局异常拦截
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@ExceptionHandler
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public SaResult handlerException(Exception e) {
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e.printStackTrace();
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return SaResult.error(e.getMessage());
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}
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}
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```
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### 2、增加跨域过滤器`CorsFilter.java`
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源码详见：[CorsFilter.java](https://gitee.com/dromara/sa-token/tree/master/sa-token-demo/sa-token-demo-sso2-client/src/main/java/com/pj/h5/CorsFilter.java)，
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将其复制到项目中即可
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### 3、新建前端项目
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任意文件夹新建前端项目：`sa-token-demo-sso2-client-h5`，在根目录添加测试文件：`index.html`
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``` js
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Sa-Token-SSO-Client端-测试页（前后端分离版）</title>
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</head>
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<body>
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<h2>Sa-Token SSO-Client 应用端（前后端分离版）</h2>
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<p>当前是否登录：<b class="is-login"></b></p>
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<p>
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<a href="javascript:location.href='sso-login.html?back=' + encodeURIComponent(location.href);">登录</a>
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<a href="javascript:location.href=baseUrl + '/sso/logout?satoken=' + localStorage.satoken + '&back=' + encodeURIComponent(location.href);">注销</a>
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</p>
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<script src="https://unpkg.zhimg.com/jquery@3.4.1/dist/jquery.min.js"></script>
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<script type="text/javascript">
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// 后端接口地址
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var baseUrl = "http://sa-sso-client1.com:9001";
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// 查询当前会话是否登录
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$.ajax({
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url: baseUrl + '/isLogin',
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type: "post",
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dataType: 'json',
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headers: {
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"X-Requested-With": "XMLHttpRequest",
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"satoken": localStorage.getItem("satoken")
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},
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success: function(res){
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$('.is-login').html(res.data + '');
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},
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error: function(xhr, type, errorThrown){
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return alert("异常：" + JSON.stringify(xhr));
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}
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});
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</script>
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</body>
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</html>
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```
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### 4、添加登录处理文件`sso-login.html`
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源码详见：[sso-login.html](https://gitee.com/dromara/sa-token/tree/master/sa-token-demo/sa-token-demo-sso2-client-h5/sso-login.html)，
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将其复制到项目中即可，与`index.html`一样放在根目录下
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### 5、测试运行
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先启动Server服务端与Client服务端，再随便找个能预览html的工具打开前端项目（比如[HBuilderX](https://www.dcloud.io/hbuilderx.html)），测试流程与一体版一致
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### 6、疑问：我在SSO模式三的demo中加入上述代码，提示我ticket无效，是怎么回事？
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上述代码是以SSO模式二为基础的，提示“Ticket无效”的原因很简单，因为SSO模式三种 Server端 与 Client端 连接的不是同一个Redis，
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所以Client端校验Ticket时无法在Redis中查询到相应的值，才会产生异常：“Ticket无效”
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要使上述代码生效很简单，我们只需更改一下校验Ticket的逻辑即可，将 `H5Controller` 中的 `checkTicket` 方法代码改为：
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``` java
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// 校验 Ticket码，获取账号Id
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private Object checkTicket(String ticket) {
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SaSsoConfig cfg = SaManager.getConfig().getSso();
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String ssoLogoutCall = null;
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if(cfg.isSlo) {
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ssoLogoutCall = SaHolder.getRequest().getUrl().replace("/doLoginByTicket", Api.ssoLogoutCall);
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}
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String checkUrl = SaSsoUtil.buildCheckTicketUrl(ticket, ssoLogoutCall);
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Object body = cfg.sendHttp.apply(checkUrl);
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return (SaFoxUtil.isEmpty(body) ? null : body);
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}
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```
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重新运行项目，即可在SSO模式三中成功整合前后台分离模式 。
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