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spring整合junit问题分析
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spring整合Junit分析
1、應(yīng)用程序的入口
?? ?main方法
2、junit單元測試中，沒有main方法也能執(zhí)行
?? ?junit集成了一個(gè)main方法
?? ?該方法就會判斷當(dāng)前測試類中哪些方法有 @Test注解
?? ?junit就讓有Test注解的方法執(zhí)行
3、junit不會管我們是否采用spring框架
?? ?在執(zhí)行測試方法時(shí)，junit根本不知道我們是不是使用了spring框架
?? ?所以也就不會為我們讀取配置文件/配置類創(chuàng)建spring核心容器
4、由以上三點(diǎn)可知
?? ?當(dāng)測試方法執(zhí)行時(shí)，沒有Ioc容器，就算寫了Autowired注解，也無法實(shí)現(xiàn)注入
<?xml version="1.0" encoding="UTF-8"?>
<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.learn</groupId><artifactId>day02_learn_04account_annoioc_withoutxml</artifactId><version>1.0-SNAPSHOT</version><packaging>jar</packaging><dependencies><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>5.0.2.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-test</artifactId><version>5.0.2.RELEASE</version></dependency><dependency><groupId>commons-dbutils</groupId><artifactId>commons-dbutils</artifactId><version>1.4</version></dependency><dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId><version>5.1.45</version></dependency><dependency><groupId>c3p0</groupId><artifactId>c3p0</artifactId><version>0.9.1.2</version></dependency><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency></dependencies>
</project>
package com.learn.domain;import java.io.Serializable;/*** 賬戶的實(shí)體類*/
public class Account implements Serializable {private Integer id;private String name;private Float money;public Integer getId() {return id;}public void setId(Integer id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public Float getMoney() {return money;}public void setMoney(Float money) {this.money = money;}@Overridepublic String toString() {return "Account{" +"id=" + id +", name='" + name + '\'' +", money=" + money +'}';}
}
package com.learn.service;import com.learn.domain.Account;import java.util.List;/*** 賬戶的業(yè)務(wù)層接口*/
public interface IAccountService {/*** 查詢所有* @return*/List<Account> findAllAccount();/*** 查詢一個(gè)* @return*/Account findAccountById(Integer accountId);/*** 保存* @param account*/void saveAccount(Account account);/*** 更新* @param account*/void updateAccount(Account account);/*** 刪除* @param acccountId*/void deleteAccount(Integer acccountId);}
package com.learn.service.impl;import com.learn.dao.IAccountDao;
import com.learn.domain.Account;
import com.learn.service.IAccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import java.util.List;/*** 賬戶的業(yè)務(wù)層實(shí)現(xiàn)類*/
@Service("accountService")
public class AccountServiceImpl implements IAccountService{@Autowiredprivate IAccountDao accountDao;public List<Account> findAllAccount() {return accountDao.findAllAccount();}public Account findAccountById(Integer accountId) {return accountDao.findAccountById(accountId);}public void saveAccount(Account account) {accountDao.saveAccount(account);}public void updateAccount(Account account) {accountDao.updateAccount(account);}public void deleteAccount(Integer acccountId) {accountDao.deleteAccount(acccountId);}
}
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/test
jdbc.username=root
jdbc.password=123456
package config;import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.apache.commons.dbutils.QueryRunner;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Scope;import javax.sql.DataSource;/*** 和spring連接數(shù)據(jù)庫相關(guān)的配置類*/
public class JdbcConfig {@Value("${jdbc.driver}")private String driver;@Value("${jdbc.url}")private String url;@Value("${jdbc.username}")private String username;@Value("${jdbc.password}")private String password;/*** 用于創(chuàng)建一個(gè)QueryRunner對象* @param dataSource* @return*/@Bean(name="runner")@Scope("prototype")public QueryRunner createQueryRunner(@Qualifier("ds2") DataSource dataSource){return new QueryRunner(dataSource);}/*** 創(chuàng)建數(shù)據(jù)源對象* @return*/@Bean(name="ds2")public DataSource createDataSource(){try {ComboPooledDataSource ds = new ComboPooledDataSource();ds.setDriverClass(driver);ds.setJdbcUrl(url);ds.setUser(username);ds.setPassword(password);return ds;}catch (Exception e){throw new RuntimeException(e);}}@Bean(name="ds1")public DataSource createDataSource1(){try {ComboPooledDataSource ds = new ComboPooledDataSource();ds.setDriverClass(driver);ds.setJdbcUrl("jdbc:mysql://localhost:3306/test");ds.setUser(username);ds.setPassword(password);return ds;}catch (Exception e){throw new RuntimeException(e);}}
}
package com.learn.test;import com.learn.domain.Account;
import com.learn.service.IAccountService;
import config.SpringConfiguration;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;import java.util.List;/*** 使用Junit單元測試：測試我們的配置* Spring整合junit的配置* 1、導(dǎo)入spring整合junit的jar(坐標(biāo))* 2、使用Junit提供的一個(gè)注解把原有的main方法替換了，替換成spring提供的* @Runwith* 3、告知spring的運(yùn)行器，spring和ioc創(chuàng)建是基于xml還是注解的，并且說明位置* @ContextConfiguration* locations：指定xml文件的位置，加上classpath關(guān)鍵字，表示在類路徑下* classes：指定注解類所在地位置** 當(dāng)我們使用spring 5.x版本的時(shí)候，要求junit的jar必須是4.12及以上*/
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = SpringConfiguration.class)
public class AccountServiceTest {@Autowiredprivate IAccountService as = null;@Testpublic void testFindAll() {//3.執(zhí)行方法List<Account> accounts = as.findAllAccount();for(Account account : accounts){System.out.println(account);}}@Testpublic void testFindOne() {//3.執(zhí)行方法Account account = as.findAccountById(1);System.out.println(account);}@Testpublic void testSave() {Account account = new Account();account.setName("test anno");account.setMoney(12345f);//3.執(zhí)行方法as.saveAccount(account);}@Testpublic void testUpdate() {//3.執(zhí)行方法Account account = as.findAccountById(4);account.setMoney(23456f);as.updateAccount(account);}@Testpublic void testDelete() {//3.執(zhí)行方法as.deleteAccount(4);}
}
package com.learn.test;import config.SpringConfiguration;
import org.apache.commons.dbutils.QueryRunner;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;/*** 測試queryrunner是否單例*/
public class QueryRunnerTest {@Testpublic void testQueryRunner(){//1.獲取容易ApplicationContext ac = new AnnotationConfigApplicationContext(SpringConfiguration.class);//2.獲取queryRunner對象QueryRunner runner = ac.getBean("runner",QueryRunner.class);QueryRunner runner1 = ac.getBean("runner",QueryRunner.class);System.out.println(runner == runner1);}
}
?
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