package com.jcdm.framework.config;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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import javax.servlet.Filter;
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import javax.servlet.FilterChain;
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import javax.servlet.ServletException;
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import javax.servlet.ServletRequest;
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import javax.servlet.ServletResponse;
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import javax.sql.DataSource;
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import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
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import org.springframework.boot.context.properties.ConfigurationProperties;
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import org.springframework.boot.web.servlet.FilterRegistrationBean;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.context.annotation.Primary;
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import com.alibaba.druid.pool.DruidDataSource;
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import com.alibaba.druid.spring.boot.autoconfigure.DruidDataSourceBuilder;
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import com.alibaba.druid.spring.boot.autoconfigure.properties.DruidStatProperties;
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import com.alibaba.druid.util.Utils;
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import com.jcdm.common.enums.DataSourceType;
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import com.jcdm.common.utils.spring.SpringUtils;
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import com.jcdm.framework.config.properties.DruidProperties;
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import com.jcdm.framework.datasource.DynamicDataSource;
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/**
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* druid 配置多数据源
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*
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* @author jc
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*/
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@Configuration
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public class DruidConfig
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{
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@Bean
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@ConfigurationProperties("spring.datasource.druid.master")
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public DataSource masterDataSource(DruidProperties druidProperties)
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{
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DruidDataSource dataSource = DruidDataSourceBuilder.create().build();
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return druidProperties.dataSource(dataSource);
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}
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@Bean
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@ConfigurationProperties("spring.datasource.druid.slave")
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@ConditionalOnProperty(prefix = "spring.datasource.druid.slave", name = "enabled", havingValue = "true")
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public DataSource slaveDataSource(DruidProperties druidProperties)
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{
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DruidDataSource dataSource = DruidDataSourceBuilder.create().build();
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return druidProperties.dataSource(dataSource);
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}
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@Bean(name = "dynamicDataSource")
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@Primary
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public DynamicDataSource dataSource(DataSource masterDataSource)
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{
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Map<Object, Object> targetDataSources = new HashMap<>();
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targetDataSources.put(DataSourceType.MASTER.name(), masterDataSource);
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setDataSource(targetDataSources, DataSourceType.SLAVE.name(), "slaveDataSource");
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return new DynamicDataSource(masterDataSource, targetDataSources);
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}
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/**
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* 设置数据源
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*
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* @param targetDataSources 备选数据源集合
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* @param sourceName 数据源名称
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* @param beanName bean名称
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*/
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public void setDataSource(Map<Object, Object> targetDataSources, String sourceName, String beanName)
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{
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try
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{
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DataSource dataSource = SpringUtils.getBean(beanName);
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targetDataSources.put(sourceName, dataSource);
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}
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catch (Exception e)
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{
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}
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}
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/**
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* 去除监控页面底部的广告
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*/
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@SuppressWarnings({ "rawtypes", "unchecked" })
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@Bean
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@ConditionalOnProperty(name = "spring.datasource.druid.statViewServlet.enabled", havingValue = "true")
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public FilterRegistrationBean removeDruidFilterRegistrationBean(DruidStatProperties properties)
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{
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// 获取web监控页面的参数
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DruidStatProperties.StatViewServlet config = properties.getStatViewServlet();
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// 提取common.js的配置路径
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String pattern = config.getUrlPattern() != null ? config.getUrlPattern() : "/druid/*";
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String commonJsPattern = pattern.replaceAll("\\*", "js/common.js");
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final String filePath = "support/http/resources/js/common.js";
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// 创建filter进行过滤
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Filter filter = new Filter()
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{
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@Override
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public void init(javax.servlet.FilterConfig filterConfig) throws ServletException
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{
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}
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@Override
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public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
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throws IOException, ServletException
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{
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chain.doFilter(request, response);
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// 重置缓冲区，响应头不会被重置
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response.resetBuffer();
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// 获取common.js
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String text = Utils.readFromResource(filePath);
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// 正则替换banner, 除去底部的广告信息
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text = text.replaceAll("<a.*?banner\"></a><br/>", "");
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text = text.replaceAll("powered.*?shrek.wang</a>", "");
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response.getWriter().write(text);
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}
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@Override
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public void destroy()
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{
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}
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};
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FilterRegistrationBean registrationBean = new FilterRegistrationBean();
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registrationBean.setFilter(filter);
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registrationBean.addUrlPatterns(commonJsPattern);
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return registrationBean;
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}
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}
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