集成SSSP

Posted 2022-11-22 z8z87878

逆水行舟

web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>Sssp</display-name>

  <!-- SpringMvc用来拦截提交中文转换的，防止提交乱码 -->
  <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
            <init-param>  
                <param-name>encoding</param-name>  
                <param-value>UTF-8</param-value>  
            </init-param>  
            <init-param>  
                <param-name>forceEncoding</param-name>  
                <param-value>true</param-value>  
            </init-param>       
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


   <!-- Spring的核心监听器 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- Spring的核心Servlet分发器 -->
    <servlet>
        <servlet-name>springDispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:applicationContext-mvc.xml</param-value>
        </init-param>
    </servlet>

    <servlet-mapping>
        <servlet-name>springDispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- 实现SpringMvc的Rest风格的拦截器 --> 
    <filter>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>HiddenHttpMethodFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

Spring配置

<?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:jpa="http://www.springframework.org/schema/data/jpa" xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
        http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

    <!-- Spring的扫描包,不与SpringMvc扫描冲突，生成两次 -->
    <context:component-scan base-package="com.ee.sssp">
        <context:exclude-filter type="annotation"
            expression="org.springframework.stereotype.Controller" />
        <context:exclude-filter type="annotation"
            expression="org.springframework.web.bind.annotation.ControllerAdvice" />
    </context:component-scan>

    <!-- 配置C3P0数据源 -->
    <context:property-placeholder location="classpath:db.properties" />

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="user" value="$jdbc.user" />
        <property name="password" value="$jdbc.password" />
        <property name="driverClass" value="$jdbc.driverClass" />
        <property name="jdbcUrl" value="$jdbc.jdbcUrl" />
    </bean>

    <!-- JPA的session管理工厂，依赖于C3P0数据源  -->
    <bean id="entityManagerFactory"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="dataSource" />

        <!-- JPA扫描的数据包，来扫描对应的注解来和生成或和表形成关联 -->
        <property name="packagesToScan" value="com.ee.sssp.entities" />

        <property name="jpaVendorAdapter">  <!-- jpa自动设配器 -->
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"></bean>
        </property>

        <property name="jpaProperties">

            <props>       <!-- jpa和表的映射规则 -->
                <prop key="hibernate.ejb.naming_strategy">org.hibernate.cfg.ImprovedNamingStrategy</prop>

                <!-- 相关数据库属性 -->
                <prop key="hibernate.hbm2ddl.auto">update</prop>
                <prop key="hibernate.show_sql">true</prop>
                <prop key="hibernate.format_sql">true</prop>
                <prop key="hibernate.dialect">org.hibernate.dialect.mysql5InnoDBDialect</prop>

                 <!-- 二级缓存 -->
                <prop key="hibernate.cache.use_second_level_cache">true</prop>
                <prop key="hibernate.cache.region.factory_class">org.hibernate.cache.ehcache.EhCacheRegionFactory
                </prop>
                <prop key="hibernate.cache.use_query_cache">true</prop>
            </props>

        </property>

        <!-- 开启JPA二级缓存 -->
        <property name="sharedCacheMode" value="ENABLE_SELECTIVE"></property>
    </bean>

    <!-- jpa事务管理器,依赖于上面配置的entityManagerFactory -->
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory"/>
    </bean>

    <!-- 注解驱动，默认依赖于上面配置的 transactionManager-->
    <tx:annotation-driven/>

    <!-- SpringData基于jpa使用配置，对应的包和session管理工程 -->
    <jpa:repositories base-package="com.ee.sssp.repository"
        entity-manager-factory-ref="entityManagerFactory"
        />

</beans>

SpringMvc配置

<?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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        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-4.0.xsd">

    <!-- 扫描包配置，不与SpringMvc产生冲突 -->
    <context:component-scan base-package="com.ee.sssp.handle" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
    </context:component-scan>

    <!-- 基本视图映射器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"></property>
        <property name="suffix" value=".jsp"></property>
    </bean>

    <!-- 静态资源默认handler -->
    <mvc:default-servlet-handler/>
    <!-- 注解驱动 ，上面和这个都不能却，标配-->
    <mvc:annotation-driven/>

</beans>

对应二级缓存使用方法:
bean

package com.ee.sssp.entities;


import java.io.Serializable;

import javax.persistence.Cacheable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.Table;

@Cacheable
@Table(name="ssh_department") //表名
@Entity
public class Department implements Serializable

    private static final long serialVersionUID = 1L;

    private Integer id;
    private String departmentName; //默认驼峰命名转下划线即对应表中字段department_name

    @GeneratedValue
    @Id
    public Integer getId() //主键
        return id;
    

    public void setId(Integer id) 
        this.id = id;
    

    public String getDepartmentName() 
        return departmentName;
    

    public void setDepartmentName(String departmentName) 
        this.departmentName = departmentName;
    

    @Override
    public String toString() 
        return "Department [id=" + id + ", departmentName=" + departmentName
                + "]";
    

repository

package com.ee.sssp.repository;

import java.util.List;

import javax.persistence.QueryHint;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.jpa.repository.QueryHints;

import com.ee.sssp.entities.Department;

public interface DepartmentRepository extends JpaRepository<Department, Integer>

    @QueryHints( @QueryHint(name="org.hibernate.cacheable", value="true") )  
    @Query("FROM Department d")
    List<Department> getAll();