SSH series: (3) Hibernate

(1)引入jar包

(2)配置

(3)测试

1、引入jar包

引入mysql jar包

mysql-connector-java-5.1.38-bin.jar

引入c3p0 jar包

c3p0-0.9.1.2.jar

引入hibernate相关jar包 （hibernate-distribution-3.6.0.Final）

antlr-2.7.6.jar

commons-collections-3.1.jar

dom4j-1.6.1.jar

hibernate3.jar

hibernate-jpa-2.0-api-1.0.0.Final.jar

javassist-3.12.0.GA.jar

jta-1.1.jar

slf4j-api-1.6.1.jar

2、配置

2.1、添加实体类：Person.java

package com.rk.test.entity;/** * 实体层Person类 DTO * * */public class Person { private String pId; private String pName; private int pVersion; public String getpId() { return pId; } public void setpId(String pId) { this.pId = pId; } public String getpName() { return pName; } public void setpName(String pName) { this.pName = pName; } public int getpVersion() { return pVersion; } public void setpVersion(int pVersion) { this.pVersion = pVersion; } @Override public String toString() { return "Person [pId=" + pId + ", pName=" + pName + ", pVersion=" + pVersion + "]"; } }

2.2、添加映射文件：Person.hbm.xml

2.3、添加Hibernate配置文件：hibernate.cfg.xml

com.mysql.jdbc.Driver jdbc:mysql:///tax_sys root root org.hibernate.dialect.MySQL5Dialect true false update thread

3、测试

测试两方面：第一是能从数据库读取一条数据，第二是能向数据库保存一条数据

package com.rk.test;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.hibernate.cfg.Configuration;import org.junit.Before;import org.junit.Test;import com.rk.test.entity.Person;public class TestHibernate { private SessionFactory sf; @Before public void init() { sf = new Configuration().configure("hibernate.cfg.xml").buildSessionFactory(); } @Test public void test() { Session session = sf.getCurrentSession(); session.beginTransaction(); Person p = (Person) session.get(Person.class, "4028d081564a762001564a76221e0000"); System.out.println(p); Person p2 = new Person(); p2.setpName("Tomcat"); session.save(p2); session.getTransaction().commit(); }}