Spring与junit测试
- - CSDN博客Web前端推荐文章1.我们知道无论在J2SE还是android中都有junit测试,利用junit能够帮助方便测试代码. 在之前的博客中我也写了一些J2SE的一些junit测试例子,今天对于Spring中junit小小的讨论一下. 这个Spring测试需要的jar包:. 2.Spring和Junit的关系图. 左边的采用传统的方式,即一般的J2SE的方式测试代码,这种情况会有些问题:.
借着学习Druid连接池的机会,使用的Spring,将知识点联系起来,简单写了一个利用JUnit和Spring-test对SpringJDBC组件DAO层测试的Demo,分类归在Spring中吧。
SpringJDBC组件是Spring提供的一个对底层JDBC的封装,扩展了更多更方便的接口,方便我们对数据库的操作。
Demo利用Maven构建,pom.xml文件配置如下(Tomcat、Jetty等暂时不需要,懒得删...)
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.zhangpl.demo</groupId> <artifactId>druid</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>druid</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <!-- 如果依赖的version,使用${druid-version},则需要定义properties属性 --> <druid-version>1.0.2</druid-version> </properties> <dependencies> <!-- druid --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>${druid-version}</version> <!-- <version>0.2.8</version> --> </dependency> <!-- Servlet、JSP --> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.4</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.0</version> <scope>provided</scope> </dependency> <!-- Junit --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.9</version> </dependency> <!-- Mysql --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.9</version> </dependency> <!-- commons-logging --> <dependency> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> <version>1.2</version> <type>pom</type> </dependency> <!-- Spring-test --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>3.2.5.RELEASE</version> </dependency> <!-- Spring相关 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>3.2.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>3.2.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>3.2.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>3.2.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>3.2.5.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>3.2.5.RELEASE</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> <plugin> <groupId>org.mortbay.jetty</groupId> <artifactId>jetty-maven-plugin</artifactId> <version>8.1.15.v20140411</version> <configuration> <scanIntervalSeconds>10</scanIntervalSeconds> </configuration> </plugin> <plugin> <groupId>org.codehaus.cargo</groupId> <artifactId>cargo-maven2-plugin</artifactId> <version>1.4.8</version> <configuration> <container> <containerId>tomcat7x</containerId> <home>E:\SoftwareDevelopment\Software\apache-tomcat\apache-tomcat-7.0.47-windows-x64\apache-tomcat-7.0.47</home> </container> <configuration> <type>standalone</type> <home>${project.build.directory}/tomcat7x</home> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <cargo.servlet.URIEncoding>UTF-8</cargo.servlet.URIEncoding> <cargo.jvmargs>-Dfile.encoding=UTF-8</cargo.jvmargs> </properties> </configuration> </configuration> </plugin> </plugins> </build> </project>
然后,数据库中建表users,字段很简单,对应下面的实体类User.java
/** * @author zhangpl * E-mail:[email protected] * 2014年8月24日 下午11:34:27 */ public class User { private int id; private String username; private String password; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { this.password = password; } }
下面是Spring的配置文件applicationContext.cml,注意:
1.连接池使用的是Druid,可不与理会;
2.使用Spring提供的注解;
3.扫描属性文件的配置;
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"> <!-- 注解配置 --> <context:component-scan base-package="com.zhangpl.demo" /> <!-- 扫描属性文件 --> <context:property-placeholder location="classpath*:db.properties" /> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <!-- 基本属性 url、user、password --> <property name="url" value="${jdbc.url}" /> <property name="username" value="${jdbc.user}" /> <property name="password" value="${jdbc.password}" /> <!-- 配置初始化大小、最小、最大 --> <property name="initialSize" value="1" /> <property name="minIdle" value="1" /> <property name="maxActive" value="20" /> <!-- 配置获取连接等待超时的时间 --> <property name="maxWait" value="60000" /> <!-- 配置间隔多久才进行一次检测,检测需要关闭的空闲连接,单位是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="60000" /> <!-- 配置一个连接在池中最小生存的时间,单位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="300000" /> <property name="validationQuery" value="SELECT 'x'" /> <property name="testWhileIdle" value="true" /> <property name="testOnBorrow" value="false" /> <property name="testOnReturn" value="false" /> <!-- 打开PSCache,并且指定每个连接上PSCache的大小 --> <property name="poolPreparedStatements" value="false" /> <property name="maxPoolPreparedStatementPerConnectionSize" value="20" /> <!-- 配置监控统计拦截的filters --> <property name="filters" value="stat" /> </bean> <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate"> <property name="dataSource"> <ref bean="dataSource" /> </property> </bean> </beans>
UserDAO.java
/** * @author zhangpl * @E-mail [email protected] * @Date 2014年8月24日 下午11:30:13 */ @Repository public class UserDAO { @Resource private JdbcTemplate jdbcTemplate; /** * 查询 * Edited by zhangpl * @return List<Map<String,Object>> */ public List<Map<String,Object>> getUser(){ List<Map<String ,Object>> userList = this.jdbcTemplate.queryForList("select *from users"); return userList; } /** * 添加 * Edited by zhangpl * @param user * @return int */ public int saveUser(User user){ int flag = this.jdbcTemplate.update("insert into users(username,password) values ('"+user.getUsername()+"','"+user.getPassword()+"') "); return flag; } /** * 删除 * Edited by zhangpl * @param id * @return int */ public int deleteUser(int id){ int flag = this.jdbcTemplate.update("delete from users where id = "+id); return flag; } /** * 修改 * Edited by zhangpl * @param user * @return int */ public int updateUser(User user){ int flag = this.jdbcTemplate.update("update users set username='"+user.getUsername()+"',password='"+user.getPassword()+"' where id="+user.getId()); return flag; } }
建立测试类UserDAOTest.java
/** * @author zhangpl * @E-mail [email protected] * @Date 2014年8月28日 下午10:56:58 */ @RunWith(SpringJUnit4ClassRunner.class) @ContextConfiguration(locations={"classpath*:applicationContext.xml"}) public class UserDAOTest { @Resource UserDAO userDAO; @Test public void testGetUser() throws Exception { List list = userDAO.getUser(); System.out.println(list); } @Test public void testSaveUser() throws Exception { User user = new User(); user.setUsername("zhangsan"); user.setPassword("123456"); int flag = userDAO.saveUser(user); if(flag>0){ System.out.println("添加成功!"); }else{ System.out.println("添加失败"); } } @Test public void testUpdateUser() throws Exception { User user = new User(); user.setId(2); user.setUsername("zhangxingsan"); user.setPassword("654321"); int flag = userDAO.updateUser(user); if(flag>0){ System.out.println("修改成功!"); }else{ System.out.println("修改失败!"); } } @Test public void testDeleteUser() throws Exception { int flag = userDAO.deleteUser(2); if(flag>0){ System.out.println("删除成功!"); }else{ System.out.println("删除失败!"); } } }
测试类中需要注意的地方:
@RunWith:指定单元测试执行类,这里就指定的是SpringJUnit4ClassRunner.class;
@ContextConfiguration:指定Spring的配置文件;
记下来是对知识点的一个小结,有不当的地方,欢迎批评指正。