Shiro框架从入门到实战代码（八）动态添加验证规则

MyShiroFilterFactoryBean.java

public class MyShiroFilterFactoryBean extends ShiroFilterFactoryBean {
    private static final String ROLE_STRING = "roles[{0}]";
    private String filterChainDefinitions;

    @Override
    public void setFilterChainDefinitions(String definitions) {
        filterChainDefinitions = definitions;
        Ini ini = new Ini();
        ini.load(definitions);
        Ini.Section section = ini.getSection("urls");
        if (CollectionUtils.isEmpty(section)) {
            section = ini.getSection("");
        }
        //模拟从数据库中读取的数据
        Map<String, String[]> permsMap = new HashMap<>();
        permsMap.put("/dotest1.html", new String[]{"test"});
        permsMap.put("/dotest2.html", new String[]{"test", "guest"});
        //permsMap.put("/dotest3.html", new String[]{"admin"});

        for (String url : permsMap.keySet()) {
            String[] roles = permsMap.get(url);
            StringBuilder sb = new StringBuilder();
            for (String role : roles) {
                sb.append(role).append(",");
            }
            String str = sb.substring(0, sb.length() - 1);
            //roles[test,guest]
            section.put(url, MessageFormat.format(ROLE_STRING, str));
        }
        this.setFilterChainDefinitionMap(section);
    }

    public void update() {
        synchronized (this) {
            try {
                AbstractShiroFilter shiroFilter =
                        (AbstractShiroFilter) this.getObject();
                PathMatchingFilterChainResolver resolver =
                        (PathMatchingFilterChainResolver) shiroFilter.getFilterChainResolver();
                DefaultFilterChainManager manager = (DefaultFilterChainManager) resolver.getFilterChainManager();
                manager.getFilterChains().clear();
                this.getFilterChainDefinitionMap().clear();

                this.setFilterChainDefinitions(filterChainDefinitions);

                Map<String, String> chains = this.getFilterChainDefinitionMap();
                if (!CollectionUtils.isEmpty(chains)) {
                    Iterator var12 = chains.entrySet().iterator();

                    while (var12.hasNext()) {
                        Map.Entry<String, String> entry = (Map.Entry) var12.next();
                        String url = (String) entry.getKey();
                        String chainDefinition = (String) entry.getValue();
                        manager.createChain(url, chainDefinition);
                    }
                }

            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
    }
}

PageController.java

@Controller
public class PageController {

    @RequestMapping("index.html")
    public String index() {
        return "index";
    }

    @Autowired
    private MyShiroFilterFactoryBean shiroFilterFactoryBean;

    @RequestMapping("update.html")
    public String update() {
        shiroFilterFactoryBean.update();
        return "index";
    }

    @RequestMapping("error.html")
    public String error() {
        return "error";
    }

    @RequestMapping("do{path}.html")
    public String page(@PathVariable(name = "path") String path, Model model) {
        model.addAttribute("path", path);
        return "test";
    }
}