Java安全框架——Apache Shiro（三十六）

谁借莪１个温暖的怀抱￠ 2023-09-23 13:56 42阅读 0赞

【2.4】热加载

为了实现热加载我们需要定义以下3个类

CustomDefaultFilterChainManager:自定义的默认过滤器链管理者  
    CustomPathMatchingFilterChainResolver:自定义的路径匹配过滤器链解析器  
    CustomShiroFilterFactoryBean:自定义shiro过滤器工厂bean  
    复制代码

【2.4.1】CustomDefaultFilterChainManager

下顶级接口FilterChainManager

package com.itheima.shiro.core.impl;

import org.apache.shiro.config.Ini;  
import org.apache.shiro.util.CollectionUtils;  
import org.apache.shiro.util.Nameable;  
import org.apache.shiro.util.StringUtils;  
import org.apache.shiro.web.config.IniFilterChainResolverFactory;  
import org.apache.shiro.web.filter.AccessControlFilter;  
import org.apache.shiro.web.filter.authc.AuthenticationFilter;  
import org.apache.shiro.web.filter.authz.AuthorizationFilter;  
import org.apache.shiro.web.filter.mgt.DefaultFilterChainManager;  
import org.apache.shiro.web.filter.mgt.NamedFilterList;  
import org.apache.shiro.web.filter.mgt.SimpleNamedFilterList;

import javax.annotation.PostConstruct;  
import javax.servlet.Filter;  
import javax.servlet.FilterChain;  
import java.util.LinkedHashMap;  
import java.util.List;  
import java.util.Map;

/\*\*  
\* @Description：自定义默认过滤器管理者  
\*/  
public class CustomDefaultFilterChainManager extends DefaultFilterChainManager \{

//登录地址  
private String loginUrl;

//登录成功后默认跳转地址  
private String successUrl;

//未授权跳转地址  
private String unauthorizedUrl;

public CustomDefaultFilterChainManager() \{  
//构建过滤器  
setFilters(new LinkedHashMap<String, Filter>());  
//构建过滤器链  
setFilterChains(new LinkedHashMap<String, NamedFilterList>());  
//构建默认过滤器  
addDefaultFilters(true);  
\}

/\*\*  
\* @Description 注册我们自定义的过滤器，相当于ShiroFilterFactoryBean的filters属性  
\* @param customFilters 过滤器  
\* @return  
\*/  
public void setCustomFilters(Map<String, Filter> customFilters) \{  
for(Map.Entry<String, Filter> entry : customFilters.entrySet()) \{  
addFilter(entry.getKey(), entry.getValue(), false);  
\}  
\}

/\*\*  
\* @Description Spring容器启动时调用  
\*/  
@PostConstruct  
public void init() \{  
//配置默认过滤器  
Map<String, Filter> filters = getFilters();

//为过滤器链配置全局URL处理属性  
for (Filter filter : filters.values()) \{  
applyGlobalPropertiesIfNecessary(filter);  
\}  
\}

/\*\*  
\* @Description 此时交于spring容器出事化，这里忽略  
\*/  
@Override  
protected void initFilter(Filter filter) \{  
\}

private void applyGlobalPropertiesIfNecessary(Filter filter) \{  
applyLoginUrlIfNecessary(filter);  
applySuccessUrlIfNecessary(filter);  
applyUnauthorizedUrlIfNecessary(filter);  
\}

private void applyLoginUrlIfNecessary(Filter filter) \{  
String loginUrl = getLoginUrl();  
if (StringUtils.hasText(loginUrl) && (filter instanceof AccessControlFilter)) \{  
AccessControlFilter acFilter = (AccessControlFilter) filter;  
//only apply the login url if they haven't explicitly configured one already:  
String existingLoginUrl = acFilter.getLoginUrl();  
if (AccessControlFilter.DEFAULT\_LOGIN\_URL.equals(existingLoginUrl)) \{  
acFilter.setLoginUrl(loginUrl);  
\}  
\}  
\}

private void applySuccessUrlIfNecessary(Filter filter) \{  
String successUrl = getSuccessUrl();  
if (StringUtils.hasText(successUrl) && (filter instanceof AuthenticationFilter)) \{  
AuthenticationFilter authcFilter = (AuthenticationFilter) filter;  
//only apply the successUrl if they haven't explicitly configured one already:  
String existingSuccessUrl = authcFilter.getSuccessUrl();  
if (AuthenticationFilter.DEFAULT\_SUCCESS\_URL.equals(existingSuccessUrl)) \{  
authcFilter.setSuccessUrl(successUrl);  
\}  
\}  
\}

private void applyUnauthorizedUrlIfNecessary(Filter filter) \{  
String unauthorizedUrl = getUnauthorizedUrl();  
if (StringUtils.hasText(unauthorizedUrl) && (filter instanceof AuthorizationFilter)) \{  
AuthorizationFilter authzFilter = (AuthorizationFilter) filter;  
//only apply the unauthorizedUrl if they haven't explicitly configured one already:  
String existingUnauthorizedUrl = authzFilter.getUnauthorizedUrl();  
if (existingUnauthorizedUrl == null) \{  
authzFilter.setUnauthorizedUrl(unauthorizedUrl);  
\}  
\}  
\}

public String getLoginUrl() \{  
return loginUrl;  
\}

public void setLoginUrl(String loginUrl) \{  
this.loginUrl = loginUrl;  
\}

public String getSuccessUrl() \{  
return successUrl;  
\}

public void setSuccessUrl(String successUrl) \{  
this.successUrl = successUrl;  
\}

public String getUnauthorizedUrl() \{  
return unauthorizedUrl;  
\}

public void setUnauthorizedUrl(String unauthorizedUrl) \{  
this.unauthorizedUrl = unauthorizedUrl;  
\}