無法創建池異步新澤西+彈簧+的初始連接的Tomcat

我有一個Web服務異步與新澤西+ Spring和使用Tomcat 7無法創建池異步新澤西+彈簧+的初始連接的Tomcat

我已經設置的server.xml中的Tomcat一樣：

<Connector port="8080" address="localhost"  
maxThreads="250" maxHttpHeaderSize="8192" 
emptySessionPath="true" protocol="HTTP/1.1" 
enableLookups="false" redirectPort="8443" acceptCount="100" 
connectionTimeout="20000" disableUploadTimeout="true" />

我有我的beam.xml這樣的：

<?xml version="1.0" encoding="UTF-8"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:context="http://www.springframework.org/schema/context" 
    xmlns:ldap="http://www.springframework.org/schema/ldap" 
    xsi:schemaLocation=" 
     http://www.springframework.org/schema/beans 
     http://www.springframework.org/schema/beans/spring-beans.xsd 
     http://www.springframework.org/schema/context 
     http://www.springframework.org/schema/context/spring-context.xsd 
     http://www.springframework.org/schema/ldap 
     http://www.springframework.org/schema/ldap/spring-ldap.xsd"> 


    <context:property-placeholder location="/config/application.properties" />  

    <!-- Initialization for data source JDBC --> 
    <bean id="dataSource" 
     class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close"> 
     <property name="driverClassName" value="com.mysql.jdbc.Driver" /> 
     <property name="url" value="${jdbc.url}" /> 
     <property name="username" value="${jdbc.username}" /> 
     <property name="password" value="${jdbc.password}" /> 
     <property name="initialSize" value="${jdbc.initialSize}" /> 
     <property name="maxActive" value="${jdbc.maxActive}"/> 
     <property name="maxIdle" value="${jdbc.maxIdle}" /> 
     <property name="minIdle" value="${jdbc.minIdle}" /> 
     <property name="timeBetweenEvictionRunsMillis" value="${jdbc.timeBetweenEvictionRunsMillis}" /> 
    </bean> 

    <!-- Definition for studentJDBCTemplate bean --> 
    <bean id="studentJDBCTemplate" class="com.me.database.StudentJDBCTemplate"> 
     <property name="dataSource" ref="dataSource" /> 
     <property name="transactionManager" ref="transactionManager"></property> 
    </bean> 

    <!-- Initialization for TransactionManager --> 
    <bean id="transactionManager" 
     class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> 
     <property name="dataSource" ref="dataSource" /> 
    </bean> 
    ...

在我StudentJDBCTemplate我有：

import org.apache.tomcat.jdbc.pool.DataSource; 
import org.springframework.dao.DataAccessException; 
import org.springframework.dao.EmptyResultDataAccessException; 
import org.springframework.jdbc.core.JdbcTemplate; 
import org.springframework.transaction.PlatformTransactionManager; 
import org.springframework.transaction.TransactionDefinition; 
import org.springframework.transaction.TransactionStatus; 
import org.springframework.transaction.support.DefaultTransactionDefinition; 

public class StudentJDBCTemplate implements StudenteDAO { 

    private DataSource dataSource; 
    private JdbcTemplate jdbcTemplateObject; 
    private PlatformTransactionManager transactionManager; 

    private int p_id; 
    private int c_id; 


    public void setDataSource(DataSource dataSource) { 
     this.dataSource = dataSource; 
     this.jdbcTemplateObject = new JdbcTemplate(dataSource); 
    } 

    public void setTransactionManager(
      PlatformTransactionManager transactionManager) { 
     this.transactionManager = transactionManager; 
    }

我嘗試用JMeter用3 HTTP請求取樣並用4號線程的線程組，提升週期1和循環計數1。但是，當我嘗試執行該測試我有此錯誤：

PM org.apache.tomcat.jdbc.pool.ConnectionPool init 
GRAVE: Unable to create initial connections of pool. 
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Data source rejected establishment of connection, message from server: "Too many connections"

來源

2014-11-06 Antonio Balduzzi

我解決這個問題;我把context.xml中對我的Tomcat的配置是：

<Resource 
auth="Container" 
driverClassName="com.mysql.jdbc.Driver" 
maxActive="100" maxIdle="30" 
maxWait="10000" 
name="jdbc/UsersDB" 
password="" 
type="javax.sql.DataSource" 
url="jdbc:mysql://localhost:3306/mydb" 
username="root"/>

改變我的beam.xml配置：

<!-- Initialization for data source JDBC --> 
    <bean id="dataSource" 
     class="org.springframework.jndi.JndiObjectFactoryBean"> 
     <property name="jndiName" value="java:comp/env/jdbc/UsersDB"/> 
     <property name="lookupOnStartup" value="true"/> 
     <property name="proxyInterface" value="javax.sql.DataSource"/> 
    </bean>

添加到Tomcat目錄/ lib目錄mysql-connector-java-VERSION-bin.jar並在我的項目

aopalliance-1.0.jar 
commons-dbcp2-2.0.1.jar 
commons-pool2-2.2.jar

來源

2014-11-07 16:09:40

無法創建池異步新澤西+彈簧+的初始連接的Tomcat

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