Tomcatc3p0配置jnid数据源2种实现方法解析_Tomcat,网络安全爱好者中心-神域博客网

这篇文章主要介绍了Tomcatc3p0配置jnid数据源2种实现方法解析,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

使用c3p0

导入c3p0jar包

<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
  <dependency>
   <groupId>com.mchange</groupId>
   <artifactId>c3p0</artifactId>
   <version>0.9.5.2</version>
  </dependency>

在tomcat的context.xml文件加入数据源配置

<Resource 
    auth=\"Container\" 
    description=\"DB Connection\" 
    driverClass=\"com.mysql.jdbc.Driver\" 
    maxPoolSize=\"100\" minPoolSize=\"2\" 
    acquireIncrement=\"2\" 
    name=\"jdbc/myDB\" 
    user=\"root\" 
    password=\"123456\" 
    factory=\"org.apache.naming.factory.BeanFactory\" 
    type=\"com.mchange.v2.c3p0.ComboPooledDataSource\" 
    jdbcUrl=\"jdbc:mysql://localhost:3306/attendance_system?characterEncoding=utf8&amp;serverTimezone=GMT%2B8\" />

获取连接

protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    try {
      //创建上下文
      Context context=new InitialContext();
      //获取数据源
      ComboPooledDataSource comboPooledDataSource= (ComboPooledDataSource) context.lookup
          (\"java:comp/env/jdbc/myDB\");
      //获取数据库连接
      Connection connection=comboPooledDataSource.getConnection();
      
      if(!connection.isClosed()){
        System.out.println(\"已经连接成功\");
      }
    } catch (NamingException e) {
      e.printStackTrace();
    } catch (SQLException e) {
      e.printStackTrace();
    }
  }

使用druid

导入jar包

 <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
  <dependency>
   <groupId>com.alibaba</groupId>
   <artifactId>druid</artifactId>
   <version>1.1.16</version>
  </dependency>

在tomcat的context.xml文件加入数据源配置

<Resource
  name=\"jdbc/MysqlDataSource\"
  factory=\"com.alibaba.druid.pool.DruidDataSourceFactory\"
  auth=\"Container\"
  type=\"javax.sql.DataSource\"
  driverClassName=\"com.mysql.cj.jdbc.Driver\"
  url=\"jdbc:mysql://localhost:3306/yl?characterEncoding=utf8&amp;serverTimezone=GMT%2B8\"
  username=\"root\"
  password=\"123456\"
  maxActive=\"50\"
  maxWait=\"10000\"
  removeabandoned=\"true\"
  removeabandonedtimeout=\"60\"
  logabandoned=\"false\"
  filters=\"stat\"/>

获取连接

protected void doGet(HttpServletRequest request, HttpServletResponse response)
      throws ServletException, IOException {
    try {
      //获取上下文对象
      Context context=new InitialContext();
      //获取数据源
      DataSource ds= (DataSource) context.lookup(\"java:comp/env/jdbc/MysqlDataSource\");
      //获取Connection对象
      Connection connection=ds.getConnection();

      if(!connection.isClosed()){
        System.out.println(\"连接成功\");

      }
    } catch (NamingException e) {
      e.printStackTrace();
    } catch (SQLException e) {
      e.printStackTrace();
    }
  }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持安全小天地。

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