spring boot Junit单元测试_spring 普通项目单元测试

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首先，讲解的是spring 普通项目的Junit单元测试。

举例maven项目。
首先引入spring 项目Junit单元测试需要的必须依赖

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>4.0.8.RELEASE</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
    <scope>test</scope>
</dependency>

编写一个测试的基础类

import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.util.Log4jConfigurer;

import java.io.FileNotFoundException;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:spring-*.xml"})
public class BaseTest {
  
}

其他类只要继承该类就可以不用每次配置spring环境了

常见问题：

log4j:WARN No appenders could be found for logger (org.springframework.test.context.junit4.SpringJUnit4ClassRunner).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.

解决spring Junit测试log4j环境初始化，在基础测试类中配置log4j的配置文件

import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.util.Log4jConfigurer;

import java.io.FileNotFoundException;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:/springConfig/*.xml"})
public class BaseTest {
    /***
     * 初始化log4j配置
     */
    static {
        try {
            Log4jConfigurer.initLogging("classpath:systemConfig/log4j.properties");
        } catch (FileNotFoundException ex) {
            System.err.println("Cannot Initialize log4j");
        }
    }
}